From 7978e34cb887ed8b30f4b8f5c54807a67ef37d63 Mon Sep 17 00:00:00 2001
From: "Ji Yong, Kim" <jiyong.kim@headercat.com>
Date: Thu, 13 Feb 2025 20:38:45 +0000
Subject: [PATCH] deploy: 1.12.16

---
 composer.json                                 |   18 +-
 src/AnalysedCodeException.php                 |   13 +
 src/Analyser/Analyser.php                     |  137 +
 src/Analyser/AnalyserResult.php               |  162 +
 src/Analyser/AnalyserResultFinalizer.php      |  223 +
 src/Analyser/ArgumentsNormalizer.php          |  299 +
 src/Analyser/ConditionalExpressionHolder.php  |   56 +
 src/Analyser/ConstantResolver.php             |  440 ++
 src/Analyser/ConstantResolverFactory.php      |   32 +
 src/Analyser/DirectInternalScopeFactory.php   |   97 +
 src/Analyser/EndStatementResult.php           |   28 +
 src/Analyser/EnsuredNonNullabilityResult.php  |   29 +
 .../EnsuredNonNullabilityResultExpression.php |   42 +
 src/Analyser/Error.php                        |  311 +
 src/Analyser/ExpressionContext.php            |   64 +
 src/Analyser/ExpressionResult.php             |   94 +
 src/Analyser/ExpressionTypeHolder.php         |   66 +
 src/Analyser/FileAnalyser.php                 |  376 +
 src/Analyser/FileAnalyserResult.php           |  112 +
 src/Analyser/FinalizerResult.php              |   50 +
 src/Analyser/Ignore/IgnoreLexer.php           |   98 +
 src/Analyser/Ignore/IgnoreParseException.php  |   21 +
 src/Analyser/Ignore/IgnoredError.php          |  101 +
 src/Analyser/Ignore/IgnoredErrorHelper.php    |  135 +
 .../IgnoredErrorHelperProcessedResult.php     |   48 +
 .../Ignore/IgnoredErrorHelperResult.php       |  243 +
 src/Analyser/ImpurePoint.php                  |   61 +
 src/Analyser/InternalError.php                |  105 +
 src/Analyser/InternalScopeFactory.php         |   43 +
 src/Analyser/LazyInternalScopeFactory.php     |   81 +
 src/Analyser/LocalIgnoresProcessor.php        |  102 +
 src/Analyser/LocalIgnoresProcessorResult.php  |   59 +
 src/Analyser/MutatingScope.php                | 6079 +++++++++++++++
 src/Analyser/NameScope.php                    |  226 +
 src/Analyser/NodeScopeResolver.php            | 6595 +++++++++++++++++
 src/Analyser/NullsafeOperatorHelper.php       |   84 +
 src/Analyser/OutOfClassScope.php              |   58 +
 src/Analyser/ProcessClosureResult.php         |   54 +
 src/Analyser/ResultCache/ResultCache.php      |  136 +
 .../ResultCache/ResultCacheClearer.php        |   29 +
 .../ResultCache/ResultCacheManager.php        | 1068 +++
 .../ResultCache/ResultCacheManagerFactory.php |   11 +
 .../ResultCache/ResultCacheMetaExtension.php  |   40 +
 .../ResultCache/ResultCacheProcessResult.php  |   25 +
 src/Analyser/RicherScopeGetTypeHelper.php     |   83 +
 src/Analyser/RuleErrorTransformer.php         |   89 +
 src/Analyser/Scope.php                        |  143 +
 src/Analyser/ScopeContext.php                 |   94 +
 src/Analyser/ScopeFactory.php                 |   21 +
 src/Analyser/SpecifiedTypes.php               |  229 +
 src/Analyser/StatementContext.php             |   53 +
 src/Analyser/StatementExitPoint.php           |   28 +
 src/Analyser/StatementResult.php              |  194 +
 src/Analyser/ThrowPoint.php                   |   80 +
 src/Analyser/TypeSpecifier.php                | 2451 ++++++
 src/Analyser/TypeSpecifierAwareExtension.php  |   12 +
 src/Analyser/TypeSpecifierContext.php         |   93 +
 src/Analyser/TypeSpecifierFactory.php         |   53 +
 src/Analyser/UndefinedVariableException.php   |   32 +
 src/Broker/AnonymousClassNameHelper.php       |   51 +
 src/Broker/BrokerFactory.php                  |   18 +
 src/Broker/ClassAutoloadingException.php      |   48 +
 src/Broker/ClassNotFoundException.php         |   27 +
 src/Broker/ConstantNotFoundException.php      |   27 +
 src/Broker/FunctionNotFoundException.php      |   27 +
 src/Cache/Cache.php                           |   29 +
 src/Cache/CacheItem.php                       |   37 +
 src/Cache/CacheStorage.php                    |   19 +
 src/Cache/FileCacheStorage.php                |  207 +
 src/Cache/MemoryCacheStorage.php              |   41 +
 src/Classes/ForbiddenClassNameExtension.php   |   33 +
 src/Collectors/CollectedData.php              |   88 +
 src/Collectors/Collector.php                  |   41 +
 src/Collectors/Registry.php                   |   57 +
 src/Collectors/RegistryFactory.php            |   24 +
 src/Command/AnalyseApplication.php            |  225 +
 src/Command/AnalyseCommand.php                |  720 ++
 src/Command/AnalyserRunner.php                |   89 +
 src/Command/AnalysisResult.php                |  152 +
 src/Command/ClearResultCacheCommand.php       |  102 +
 src/Command/CommandHelper.php                 |  599 ++
 src/Command/DiagnoseCommand.php               |  107 +
 src/Command/DumpParametersCommand.php         |  113 +
 .../BaselineNeonErrorFormatter.php            |  128 +
 .../BaselinePhpErrorFormatter.php             |  111 +
 .../CheckstyleErrorFormatter.php              |  122 +
 .../CiDetectedErrorFormatter.php              |   46 +
 src/Command/ErrorFormatter/ErrorFormatter.php |   36 +
 .../ErrorFormatter/GithubErrorFormatter.php   |   75 +
 .../ErrorFormatter/GitlabErrorFormatter.php   |   73 +
 .../ErrorFormatter/JsonErrorFormatter.php     |   71 +
 .../ErrorFormatter/JunitErrorFormatter.php    |   91 +
 .../ErrorFormatter/RawErrorFormatter.php      |   50 +
 .../ErrorFormatter/TableErrorFormatter.php    |  167 +
 .../ErrorFormatter/TeamcityErrorFormatter.php |  117 +
 src/Command/ErrorsConsoleStyle.php            |  209 +
 src/Command/FixerApplication.php              |  589 ++
 src/Command/FixerProcessException.php         |   11 +
 src/Command/FixerWorkerCommand.php            |  415 ++
 src/Command/IgnoredRegexValidator.php         |  162 +
 src/Command/IgnoredRegexValidatorResult.php   |   50 +
 .../InceptionNotSuccessfulException.php       |   11 +
 src/Command/InceptionResult.php               |  128 +
 src/Command/Output.php                        |   26 +
 src/Command/OutputStyle.php                   |   43 +
 src/Command/Symfony/SymfonyOutput.php         |   63 +
 src/Command/Symfony/SymfonyStyle.php          |   89 +
 src/Command/WorkerCommand.php                 |  266 +
 src/Dependency/DependencyResolver.php         |  681 ++
 src/Dependency/ExportedNode.php               |   21 +
 .../ExportedNode/ExportedAttributeNode.php    |   84 +
 .../ExportedClassConstantNode.php             |   92 +
 .../ExportedClassConstantsNode.php            |  107 +
 .../ExportedNode/ExportedClassNode.php        |  186 +
 .../ExportedNode/ExportedEnumCaseNode.php     |   79 +
 .../ExportedNode/ExportedEnumNode.php         |  149 +
 .../ExportedNode/ExportedFunctionNode.php     |  148 +
 .../ExportedNode/ExportedInterfaceNode.php    |  118 +
 .../ExportedNode/ExportedMethodNode.php       |  159 +
 .../ExportedNode/ExportedParameterNode.php    |  107 +
 .../ExportedNode/ExportedPhpDocNode.php       |   66 +
 .../ExportedNode/ExportedPropertiesNode.php   |  138 +
 .../ExportedNode/ExportedTraitNode.php        |   66 +
 .../ExportedTraitUseAdaptation.php            |  107 +
 src/Dependency/ExportedNodeFetcher.php        |   39 +
 src/Dependency/ExportedNodeResolver.php       |  386 +
 src/Dependency/ExportedNodeVisitor.php        |   62 +
 src/Dependency/NodeDependencies.php           |   59 +
 src/Dependency/RootExportedNode.php           |   24 +
 .../BleedingEdgeToggle.php                    |   21 +
 .../ConditionalTagsExtension.php              |   93 +
 src/DependencyInjection/Configurator.php      |  220 +
 src/DependencyInjection/Container.php         |   48 +
 src/DependencyInjection/ContainerFactory.php  |  395 +
 .../DerivativeContainerFactory.php            |   53 +
 .../DuplicateIncludedFilesException.php       |   29 +
 .../InvalidExcludePathsException.php          |   28 +
 .../InvalidIgnoredErrorPatternsException.php  |   28 +
 .../InvalidPhpVersionException.php            |   11 +
 src/DependencyInjection/LoaderFactory.php     |   36 +
 .../MemoizingContainer.php                    |   65 +
 src/DependencyInjection/Neon/OptionalPath.php |   13 +
 src/DependencyInjection/NeonAdapter.php       |  221 +
 src/DependencyInjection/NeonLoader.php        |   36 +
 .../Nette/NetteContainer.php                  |   96 +
 .../ParameterNotFoundException.php            |   17 +
 .../ParametersSchemaExtension.php             |   19 +
 .../ProjectConfigHelper.php                   |   67 +
 ...assReflectionExtensionRegistryProvider.php |   13 +
 ...assReflectionExtensionRegistryProvider.php |   49 +
 src/DependencyInjection/RulesExtension.php    |   33 +
 ...micReturnTypeExtensionRegistryProvider.php |   13 +
 .../DynamicThrowTypeExtensionProvider.php     |   22 +
 ...nTypeResolverExtensionRegistryProvider.php |   13 +
 ...micReturnTypeExtensionRegistryProvider.php |   34 +
 .../LazyDynamicThrowTypeExtensionProvider.php |   34 +
 ...nTypeResolverExtensionRegistryProvider.php |   30 +
 ...ypeSpecifyingExtensionRegistryProvider.php |   30 +
 ...yParameterClosureTypeExtensionProvider.php |   34 +
 .../LazyParameterOutTypeExtensionProvider.php |   34 +
 ...ypeSpecifyingExtensionRegistryProvider.php |   13 +
 .../ParameterClosureTypeExtensionProvider.php |   22 +
 .../ParameterOutTypeExtensionProvider.php     |   22 +
 .../ValidateExcludePathsExtension.php         |   84 +
 .../ValidateIgnoredErrorsExtension.php        |  227 +
 src/Diagnose/DiagnoseExtension.php            |   32 +
 src/Diagnose/PHPStanDiagnoseExtension.php     |  209 +
 src/File/CouldNotReadFileException.php        |   22 +
 src/File/CouldNotWriteFileException.php       |   22 +
 src/File/FileExcluder.php                     |  137 +
 src/File/FileExcluderFactory.php              |   47 +
 src/File/FileExcluderRawFactory.php           |   16 +
 src/File/FileFinder.php                       |   55 +
 src/File/FileFinderResult.php                 |   29 +
 src/File/FileHelper.php                       |  103 +
 src/File/FileMonitor.php                      |   94 +
 src/File/FileMonitorResult.php                |   45 +
 src/File/FileReader.php                       |   37 +
 src/File/FileWriter.php                       |   25 +
 src/File/FuzzyRelativePathHelper.php          |  119 +
 src/File/NullRelativePathHelper.php           |   14 +
 .../ParentDirectoryRelativePathHelper.php     |   71 +
 src/File/PathNotFoundException.php            |   22 +
 src/File/RelativePathHelper.php               |   12 +
 src/File/SimpleRelativePathHelper.php         |   27 +
 ...SystemAgnosticSimpleRelativePathHelper.php |   27 +
 src/Internal/BytesHelper.php                  |   32 +
 src/Internal/CombinationsHelper.php           |   36 +
 src/Internal/ComposerHelper.php               |   92 +
 src/Internal/DeprecatedAttributeHelper.php    |   46 +
 src/Internal/DirectoryCreator.php             |   37 +
 src/Internal/DirectoryCreatorException.php    |   25 +
 src/Internal/SprintfHelper.php                |   16 +
 src/Node/AnonymousClassNode.php               |   33 +
 src/Node/BooleanAndNode.php                   |   48 +
 src/Node/BooleanOrNode.php                    |   48 +
 src/Node/BreaklessWhileLoopNode.php           |   50 +
 src/Node/CatchWithUnthrownExceptionNode.php   |   49 +
 src/Node/ClassConstantsNode.php               |   66 +
 src/Node/ClassMethod.php                      |   29 +
 src/Node/ClassMethodsNode.php                 |   65 +
 src/Node/ClassPropertiesNode.php              |  416 ++
 src/Node/ClassPropertyNode.php                |  169 +
 src/Node/ClassStatementsGatherer.php          |  294 +
 src/Node/ClosureReturnStatementsNode.php      |  100 +
 src/Node/CollectedDataNode.php                |   74 +
 src/Node/Constant/ClassConstantFetch.php      |   29 +
 src/Node/DoWhileLoopConditionNode.php         |   47 +
 src/Node/ExecutionEndNode.php                 |   53 +
 src/Node/Expr/AlwaysRememberedExpr.php        |   46 +
 src/Node/Expr/ExistingArrayDimFetch.php       |   40 +
 src/Node/Expr/GetIterableKeyTypeExpr.php      |   35 +
 src/Node/Expr/GetIterableValueTypeExpr.php    |   35 +
 src/Node/Expr/GetOffsetValueTypeExpr.php      |   40 +
 src/Node/Expr/OriginalPropertyTypeExpr.php    |   35 +
 .../ParameterVariableOriginalValueExpr.php    |   35 +
 src/Node/Expr/PropertyInitializationExpr.php  |   35 +
 .../Expr/SetExistingOffsetValueTypeExpr.php   |   45 +
 src/Node/Expr/SetOffsetValueTypeExpr.php      |   45 +
 src/Node/Expr/TypeExpr.php                    |   40 +
 src/Node/Expr/UnsetOffsetExpr.php             |   40 +
 src/Node/FileNode.php                         |   45 +
 src/Node/FinallyExitPointsNode.php            |   53 +
 src/Node/FunctionCallableNode.php             |   46 +
 src/Node/FunctionReturnStatementsNode.php     |  107 +
 src/Node/InArrowFunctionNode.php              |   48 +
 src/Node/InClassMethodNode.php                |   53 +
 src/Node/InClassNode.php                      |   44 +
 src/Node/InClosureNode.php                    |   48 +
 src/Node/InForeachNode.php                    |   35 +
 src/Node/InFunctionNode.php                   |   46 +
 src/Node/InPropertyHookNode.php               |   61 +
 src/Node/InTraitNode.php                      |   48 +
 src/Node/InstantiationCallableNode.php        |   46 +
 src/Node/InvalidateExprNode.php               |   38 +
 src/Node/IssetExpr.php                        |   42 +
 src/Node/LiteralArrayItem.php                 |   29 +
 src/Node/LiteralArrayNode.php                 |   44 +
 src/Node/MatchExpressionArm.php               |   37 +
 src/Node/MatchExpressionArmBody.php           |   29 +
 src/Node/MatchExpressionArmCondition.php      |   34 +
 src/Node/MatchExpressionNode.php              |   60 +
 src/Node/Method/MethodCall.php                |   37 +
 src/Node/MethodCallableNode.php               |   55 +
 src/Node/MethodReturnStatementsNode.php       |  127 +
 src/Node/NoopExpressionNode.php               |   40 +
 src/Node/Printer/ExprPrinter.php              |   30 +
 src/Node/Printer/NodeTypePrinter.php          |   53 +
 src/Node/Printer/Printer.php                  |   94 +
 src/Node/Property/PropertyAssign.php          |   32 +
 src/Node/Property/PropertyRead.php            |   36 +
 src/Node/Property/PropertyWrite.php           |   38 +
 src/Node/PropertyAssignNode.php               |   49 +
 src/Node/PropertyHookReturnStatementsNode.php |  112 +
 src/Node/PropertyHookStatementNode.php        |   52 +
 src/Node/ReturnStatement.php                  |   33 +
 src/Node/ReturnStatementsNode.php             |   43 +
 src/Node/StaticMethodCallableNode.php         |   59 +
 src/Node/UnreachableStatementNode.php         |   46 +
 src/Node/VarTagChangedExpressionTypeNode.php  |   41 +
 src/Node/VariableAssignNode.php               |   49 +
 src/Node/VirtualNode.php                      |   12 +
 src/Parallel/ParallelAnalyser.php             |  323 +
 src/Parallel/Process.php                      |  159 +
 src/Parallel/ProcessPool.php                  |   74 +
 src/Parallel/ProcessTimedOutException.php     |   11 +
 src/Parallel/Schedule.php                     |   29 +
 src/Parallel/Scheduler.php                    |   75 +
 src/Parser/AnonymousClassVisitor.php          |   53 +
 src/Parser/ArrayFilterArgVisitor.php          |   28 +
 src/Parser/ArrayFindArgVisitor.php            |   29 +
 src/Parser/ArrayMapArgVisitor.php             |   33 +
 src/Parser/ArrayWalkArgVisitor.php            |   28 +
 src/Parser/ArrowFunctionArgVisitor.php        |   42 +
 src/Parser/CachedParser.php                   |   98 +
 src/Parser/CleaningParser.php                 |   42 +
 src/Parser/CleaningVisitor.php                |  105 +
 src/Parser/ClosureArgVisitor.php              |   42 +
 src/Parser/ClosureBindArgVisitor.php          |   34 +
 src/Parser/ClosureBindToVarVisitor.php        |   31 +
 src/Parser/CurlSetOptArgVisitor.php           |   28 +
 src/Parser/DeclarePositionVisitor.php         |   45 +
 .../ImmediatelyInvokedClosureVisitor.php      |   23 +
 src/Parser/LastConditionVisitor.php           |   94 +
 src/Parser/LexerFactory.php                   |   31 +
 src/Parser/LineAttributesVisitor.php          |   29 +
 .../MagicConstantParamDefaultVisitor.php      |   22 +
 src/Parser/NewAssignedToPropertyVisitor.php   |   27 +
 src/Parser/ParentStmtTypesVisitor.php         |   51 +
 src/Parser/Parser.php                         |   25 +
 src/Parser/ParserErrorsException.php          |   55 +
 src/Parser/PathRoutingParser.php              |   81 +
 src/Parser/PhpParserDecorator.php             |   41 +
 src/Parser/PhpParserFactory.php               |   29 +
 .../RemoveUnusedCodeByPhpVersionIdVisitor.php |   99 +
 src/Parser/RichParser.php                     |  347 +
 src/Parser/SimpleParser.php                   |   61 +
 src/Parser/StandaloneThrowExprVisitor.php     |   29 +
 src/Parser/StubParser.php                     |   57 +
 src/Parser/TraitCollectingVisitor.php         |   26 +
 src/Parser/TryCatchTypeVisitor.php            |   75 +
 src/Parser/TypeTraverserInstanceofVisitor.php |   57 +
 src/Parser/VariadicFunctionsVisitor.php       |   95 +
 src/Parser/VariadicMethodsVisitor.php         |  136 +
 src/Php/ComposerPhpVersionFactory.php         |  122 +
 src/Php/PhpVersion.php                        |  399 +
 src/Php/PhpVersionFactory.php                 |   45 +
 src/Php/PhpVersionFactoryFactory.php          |   63 +
 src/Php/PhpVersions.php                       |   47 +
 src/PhpDoc/ConstExprNodeResolver.php          |  140 +
 src/PhpDoc/DefaultStubFilesProvider.php       |   75 +
 ...eNodeResolverExtensionRegistryProvider.php |   18 +
 src/PhpDoc/JsonValidateStubFilesExtension.php |   24 +
 ...eNodeResolverExtensionRegistryProvider.php |   29 +
 src/PhpDoc/PhpDocBlock.php                    |  409 +
 src/PhpDoc/PhpDocInheritanceResolver.php      |  157 +
 src/PhpDoc/PhpDocNodeResolver.php             |  754 ++
 src/PhpDoc/PhpDocStringResolver.php           |   27 +
 .../ReflectionClassStubFilesExtension.php     |   28 +
 .../ReflectionEnumStubFilesExtension.php      |   28 +
 src/PhpDoc/ResolvedPhpDocBlock.php            | 1246 ++++
 src/PhpDoc/SocketSelectStubFilesExtension.php |   24 +
 src/PhpDoc/StubFilesExtension.php             |   30 +
 src/PhpDoc/StubFilesProvider.php              |   15 +
 src/PhpDoc/StubPhpDocProvider.php             |  379 +
 src/PhpDoc/StubSourceLocatorFactory.php       |   55 +
 src/PhpDoc/StubValidator.php                  |  293 +
 src/PhpDoc/Tag/AssertTag.php                  |   97 +
 src/PhpDoc/Tag/AssertTagParameter.php         |   60 +
 src/PhpDoc/Tag/DeprecatedTag.php              |   21 +
 src/PhpDoc/Tag/ExtendsTag.php                 |   23 +
 src/PhpDoc/Tag/ImplementsTag.php              |   23 +
 src/PhpDoc/Tag/MethodTag.php                  |   53 +
 src/PhpDoc/Tag/MethodTagParameter.php         |   50 +
 src/PhpDoc/Tag/MixinTag.php                   |   23 +
 src/PhpDoc/Tag/ParamClosureThisTag.php        |   30 +
 src/PhpDoc/Tag/ParamOutTag.php                |   28 +
 src/PhpDoc/Tag/ParamTag.php                   |   36 +
 src/PhpDoc/Tag/PropertyTag.php                |   47 +
 src/PhpDoc/Tag/RequireExtendsTag.php          |   23 +
 src/PhpDoc/Tag/RequireImplementsTag.php       |   23 +
 src/PhpDoc/Tag/ReturnTag.php                  |   38 +
 src/PhpDoc/Tag/SelfOutTypeTag.php             |   28 +
 src/PhpDoc/Tag/TemplateTag.php                |   45 +
 src/PhpDoc/Tag/ThrowsTag.php                  |   23 +
 src/PhpDoc/Tag/TypeAliasImportTag.php         |   29 +
 src/PhpDoc/Tag/TypeAliasTag.php               |   37 +
 src/PhpDoc/Tag/TypedTag.php                   |   19 +
 src/PhpDoc/Tag/UsesTag.php                    |   23 +
 src/PhpDoc/Tag/VarTag.php                     |   28 +
 src/PhpDoc/TypeNodeResolver.php               | 1284 ++++
 src/PhpDoc/TypeNodeResolverAwareExtension.php |   12 +
 src/PhpDoc/TypeNodeResolverExtension.php      |   34 +
 ...TypeNodeResolverExtensionAwareRegistry.php |   34 +
 .../TypeNodeResolverExtensionRegistry.php     |   14 +
 ...eNodeResolverExtensionRegistryProvider.php |   11 +
 src/PhpDoc/TypeStringResolver.php             |   29 +
 src/Process/CpuCoreCounter.php                |   29 +
 src/Process/ProcessCanceledException.php      |   11 +
 src/Process/ProcessCrashedException.php       |   11 +
 src/Process/ProcessHelper.php                 |   88 +
 src/Process/ProcessPromise.php                |   99 +
 .../AdditionalConstructorsExtension.php       |   30 +
 ...llowedSubTypesClassReflectionExtension.php |   37 +
 .../AnnotationMethodReflection.php            |  185 +
 .../AnnotationPropertyReflection.php          |  152 +
 .../AnnotationsMethodParameterReflection.php  |   84 +
 ...tationsMethodsClassReflectionExtension.php |  138 +
 ...ionsPropertiesClassReflectionExtension.php |  105 +
 src/Reflection/Assertions.php                 |  112 +
 src/Reflection/AttributeReflection.php        |   34 +
 src/Reflection/AttributeReflectionFactory.php |  135 +
 .../BetterReflectionProvider.php              |  484 ++
 .../BetterReflectionProviderFactory.php       |   15 +
 .../BetterReflectionSourceLocatorFactory.php  |  141 +
 .../Reflector/MemoizingReflector.php          |  112 +
 .../AutoloadFunctionsSourceLocator.php        |   59 +
 .../SourceLocator/AutoloadSourceLocator.php   |  383 +
 .../SourceLocator/CachingVisitor.php          |  157 +
 ...JsonAndInstalledJsonSourceLocatorMaker.php |  259 +
 .../SourceLocator/FetchedNode.php             |   44 +
 .../SourceLocator/FetchedNodesResult.php      |   48 +
 .../SourceLocator/FileNodesFetcher.php        |   47 +
 .../FileReadTrapStreamWrapper.php             |  274 +
 .../OptimizedDirectorySourceLocator.php       |  218 +
 ...OptimizedDirectorySourceLocatorFactory.php |  217 +
 ...imizedDirectorySourceLocatorRepository.php |   29 +
 .../OptimizedPsrAutoloaderLocator.php         |   65 +
 .../OptimizedPsrAutoloaderLocatorFactory.php  |   13 +
 .../OptimizedSingleFileSourceLocator.php      |  261 +
 ...ptimizedSingleFileSourceLocatorFactory.php |   11 +
 ...mizedSingleFileSourceLocatorRepository.php |   29 +
 .../SourceLocator/PhpFileCleaner.php          |  296 +
 .../PhpVersionBlacklistSourceLocator.php      |   45 +
 .../ReflectionClassSourceLocator.php          |   54 +
 .../RewriteClassAliasSourceLocator.php        |   47 +
 .../SkipClassAliasSourceLocator.php           |   48 +
 .../PhpStormStubsSourceStubberFactory.php     |   23 +
 .../ReflectionSourceStubberFactory.php        |   22 +
 ...tionEnumCaseDynamicReturnTypeExtension.php |   66 +
 ...flectionEnumDynamicReturnTypeExtension.php |  103 +
 .../Callables/CallableParametersAcceptor.php  |   40 +
 .../Callables/FunctionCallableVariant.php     |  172 +
 .../Callables/SimpleImpurePoint.php           |   73 +
 src/Reflection/Callables/SimpleThrowPoint.php |   46 +
 src/Reflection/ClassConstantReflection.php    |   30 +
 src/Reflection/ClassMemberAccessAnswerer.php  |   30 +
 src/Reflection/ClassMemberReflection.php      |   20 +
 src/Reflection/ClassNameHelper.php            |   18 +
 src/Reflection/ClassReflection.php            | 1841 +++++
 .../ClassReflectionExtensionRegistry.php      |   61 +
 .../Constant/RuntimeConstantReflection.php    |   53 +
 src/Reflection/ConstantNameHelper.php         |   27 +
 src/Reflection/ConstantReflection.php         |   25 +
 src/Reflection/ConstructorsHelper.php         |   78 +
 .../Dummy/ChangedTypeMethodReflection.php     |  164 +
 .../Dummy/ChangedTypePropertyReflection.php   |  150 +
 .../Dummy/DummyClassConstantReflection.php    |  115 +
 .../Dummy/DummyConstructorReflection.php      |  156 +
 .../Dummy/DummyMethodReflection.php           |  148 +
 .../Dummy/DummyPropertyReflection.php         |  146 +
 src/Reflection/EnumCaseReflection.php         |   68 +
 .../ExtendedCallableFunctionVariant.php       |   84 +
 src/Reflection/ExtendedFunctionVariant.php    |   62 +
 src/Reflection/ExtendedMethodReflection.php   |   67 +
 .../ExtendedParameterReflection.php           |   30 +
 src/Reflection/ExtendedParametersAcceptor.php |   24 +
 src/Reflection/ExtendedPropertyReflection.php |   63 +
 src/Reflection/FunctionReflection.php         |   66 +
 src/Reflection/FunctionReflectionFactory.php  |   41 +
 src/Reflection/FunctionVariant.php            |   67 +
 .../GenericParametersAcceptorResolver.php     |  138 +
 src/Reflection/InaccessibleMethod.php         |   92 +
 src/Reflection/InitializerExprContext.php     |  251 +
 .../InitializerExprTypeResolver.php           | 2180 ++++++
 src/Reflection/MethodPrototypeReflection.php  |   87 +
 src/Reflection/MethodReflection.php           |   34 +
 .../MethodsClassReflectionExtension.php       |   30 +
 ...MissingConstantFromReflectionException.php |   26 +
 .../MissingMethodFromReflectionException.php  |   26 +
 ...MissingPropertyFromReflectionException.php |   26 +
 .../Mixin/MixinMethodReflection.php           |   89 +
 .../MixinMethodsClassReflectionExtension.php  |  100 +
 ...ixinPropertiesClassReflectionExtension.php |   91 +
 src/Reflection/NamespaceAnswerer.php          |   15 +
 .../ExtendedNativeParameterReflection.php     |  101 +
 .../Native/NativeFunctionReflection.php       |  154 +
 .../Native/NativeMethodReflection.php         |  227 +
 .../Native/NativeParameterReflection.php      |   67 +
 ...onEnumReturnDynamicReturnTypeExtension.php |   44 +
 src/Reflection/ParameterReflection.php        |   24 +
 src/Reflection/ParametersAcceptor.php         |   32 +
 src/Reflection/ParametersAcceptorSelector.php | 1102 +++
 src/Reflection/PassedByReference.php          |   80 +
 .../Php/ClosureCallMethodReflection.php       |  196 +
 ...allUnresolvedMethodPrototypeReflection.php |   38 +
 src/Reflection/Php/DummyParameter.php         |   50 +
 ...llowedSubTypesClassReflectionExtension.php |   29 +
 .../Php/EnumCasesMethodReflection.php         |  160 +
 src/Reflection/Php/EnumPropertyReflection.php |  146 +
 ...mUnresolvedPropertyPrototypeReflection.php |   37 +
 src/Reflection/Php/ExitFunctionReflection.php |  147 +
 src/Reflection/Php/ExtendedDummyParameter.php |   72 +
 .../Php/PhpClassReflectionExtension.php       | 1225 +++
 .../PhpFunctionFromParserNodeReflection.php   |  338 +
 src/Reflection/Php/PhpFunctionReflection.php  |  278 +
 .../Php/PhpMethodFromParserNodeReflection.php |  300 +
 src/Reflection/Php/PhpMethodReflection.php    |  529 ++
 .../Php/PhpMethodReflectionFactory.php        |   47 +
 .../PhpParameterFromParserNodeReflection.php  |  117 +
 src/Reflection/Php/PhpParameterReflection.php |  152 +
 src/Reflection/Php/PhpPropertyReflection.php  |  292 +
 .../Php/SimpleXMLElementProperty.php          |  160 +
 .../Php/Soap/SoapClientMethodReflection.php   |  101 +
 ...pClientMethodsClassReflectionExtension.php |   23 +
 .../Php/UniversalObjectCrateProperty.php      |  150 +
 ...alObjectCratesClassReflectionExtension.php |   95 +
 src/Reflection/PhpVersionStaticAccessor.php   |   31 +
 .../PropertiesClassReflectionExtension.php    |   30 +
 src/Reflection/PropertyReflection.php         |   29 +
 .../RealClassClassConstantReflection.php      |  157 +
 src/Reflection/ReflectionProvider.php         |   40 +
 .../DirectReflectionProviderProvider.php      |   20 +
 .../DummyReflectionProvider.php               |   73 +
 .../LazyReflectionProviderProvider.php        |   21 +
 .../MemoizingReflectionProvider.php           |  100 +
 .../ReflectionProviderFactory.php             |   22 +
 .../ReflectionProviderProvider.php            |   13 +
 .../SetterReflectionProviderProvider.php      |   23 +
 .../ReflectionProviderStaticAccessor.php      |   30 +
 ...ExtendsMethodsClassReflectionExtension.php |   58 +
 ...endsPropertiesClassReflectionExtension.php |   58 +
 src/Reflection/ResolvedFunctionVariant.php    |   17 +
 .../ResolvedFunctionVariantWithCallable.php   |  121 +
 .../ResolvedFunctionVariantWithOriginal.php   |  301 +
 src/Reflection/ResolvedMethodReflection.php   |  223 +
 src/Reflection/ResolvedPropertyReflection.php |  212 +
 .../SignatureMap/FunctionSignature.php        |   46 +
 .../FunctionSignatureMapProvider.php          |  263 +
 .../NativeFunctionReflectionProvider.php      |  195 +
 .../SignatureMap/ParameterSignature.php       |   65 +
 .../SignatureMap/Php8SignatureMapProvider.php |  512 ++
 .../SignatureMap/SignatureMapParser.php       |  118 +
 .../SignatureMap/SignatureMapProvider.php     |   44 +
 .../SignatureMapProviderFactory.php           |   28 +
 src/Reflection/TrivialParametersAcceptor.php  |  102 +
 ...ackUnresolvedMethodPrototypeReflection.php |  145 +
 ...kUnresolvedPropertyPrototypeReflection.php |   95 +
 ...ypeUnresolvedMethodPrototypeReflection.php |  155 +
 ...eUnresolvedPropertyPrototypeReflection.php |   95 +
 .../Type/IntersectionTypeMethodReflection.php |  227 +
 .../IntersectionTypePropertyReflection.php    |  199 +
 ...ypeUnresolvedMethodPrototypeReflection.php |   57 +
 ...eUnresolvedPropertyPrototypeReflection.php |   57 +
 .../Type/UnionTypeMethodReflection.php        |  204 +
 .../Type/UnionTypePropertyReflection.php      |  199 +
 ...ypeUnresolvedMethodPrototypeReflection.php |   58 +
 ...eUnresolvedPropertyPrototypeReflection.php |   57 +
 .../UnresolvedMethodPrototypeReflection.php   |   20 +
 .../UnresolvedPropertyPrototypeReflection.php |   20 +
 .../WrappedExtendedMethodReflection.php       |  172 +
 .../WrappedExtendedPropertyReflection.php     |  143 +
 src/Reflection/WrapperPropertyReflection.php  |   11 +
 src/Rules/Api/ApiClassConstFetchRule.php      |   90 +
 src/Rules/Api/ApiClassExtendsRule.php         |   77 +
 src/Rules/Api/ApiClassImplementsRule.php      |   88 +
 src/Rules/Api/ApiInstanceofRule.php           |  119 +
 src/Rules/Api/ApiInstanceofTypeRule.php       |  158 +
 src/Rules/Api/ApiInstantiationRule.php        |   77 +
 src/Rules/Api/ApiInterfaceExtendsRule.php     |   88 +
 src/Rules/Api/ApiMethodCallRule.php           |   83 +
 src/Rules/Api/ApiRuleHelper.php               |   87 +
 src/Rules/Api/ApiStaticCallRule.php           |   98 +
 src/Rules/Api/ApiTraitUseRule.php             |   58 +
 src/Rules/Api/BcUncoveredInterface.php        |   73 +
 src/Rules/Api/GetTemplateTypeRule.php         |   82 +
 .../NodeConnectingVisitorAttributesRule.php   |   78 +
 src/Rules/Api/OldPhpParser4ClassRule.php      |   80 +
 .../PhpStanNamespaceIn3rdPartyPackageRule.php |   90 +
 .../Api/RuntimeReflectionFunctionRule.php     |   77 +
 .../RuntimeReflectionInstantiationRule.php    |   96 +
 src/Rules/Arrays/AllowedArrayKeysTypes.php    |   87 +
 src/Rules/Arrays/ArrayDestructuringRule.php   |  118 +
 src/Rules/Arrays/ArrayUnpackingRule.php       |   66 +
 src/Rules/Arrays/DeadForeachRule.php          |   40 +
 .../DuplicateKeysInLiteralArraysRule.php      |  122 +
 .../Arrays/InvalidKeyInArrayDimFetchRule.php  |   69 +
 .../Arrays/InvalidKeyInArrayItemRule.php      |   54 +
 src/Rules/Arrays/IterableInForeachRule.php    |   57 +
 .../NonexistentOffsetInArrayDimFetchCheck.php |  119 +
 .../NonexistentOffsetInArrayDimFetchRule.php  |  108 +
 src/Rules/Arrays/OffsetAccessAssignOpRule.php |   98 +
 .../Arrays/OffsetAccessAssignmentRule.php     |   99 +
 .../OffsetAccessValueAssignmentRule.php       |   94 +
 .../OffsetAccessWithoutDimForReadingRule.php  |   40 +
 .../Arrays/UnpackIterableInArrayRule.php      |   70 +
 src/Rules/AttributesCheck.php                 |  168 +
 src/Rules/Cast/EchoRule.php                   |   58 +
 src/Rules/Cast/InvalidCastRule.php            |  103 +
 .../Cast/InvalidPartOfEncapsedStringRule.php  |   68 +
 src/Rules/Cast/PrintRule.php                  |   52 +
 src/Rules/Cast/UnsetCastRule.php              |   41 +
 src/Rules/ClassCaseSensitivityCheck.php       |   56 +
 src/Rules/ClassForbiddenNameCheck.php         |   94 +
 src/Rules/ClassNameCheck.php                  |   36 +
 src/Rules/ClassNameNodePair.php               |   25 +
 ...AccessPrivateConstantThroughStaticRule.php |   62 +
 src/Rules/Classes/AllowedSubTypesRule.php     |   69 +
 src/Rules/Classes/ClassAttributesRule.php     |   70 +
 .../Classes/ClassConstantAttributesRule.php   |   37 +
 src/Rules/Classes/ClassConstantRule.php       |  208 +
 .../Classes/DuplicateClassDeclarationRule.php |   67 +
 .../Classes/DuplicateDeclarationRule.php      |  134 +
 src/Rules/Classes/EnumSanityRule.php          |  227 +
 .../ExistingClassInClassExtendsRule.php       |  132 +
 .../Classes/ExistingClassInInstanceOfRule.php |  105 +
 .../Classes/ExistingClassInTraitUseRule.php   |   98 +
 .../ExistingClassesInClassImplementsRule.php  |   95 +
 .../ExistingClassesInEnumImplementsRule.php   |   92 +
 .../ExistingClassesInInterfaceExtendsRule.php |   93 +
 .../Classes/ImpossibleInstanceOfRule.php      |  114 +
 .../Classes/InstantiationCallableRule.php     |   33 +
 src/Rules/Classes/InstantiationRule.php       |  277 +
 .../Classes/InvalidPromotedPropertiesRule.php |  104 +
 src/Rules/Classes/LocalTypeAliasesCheck.php   |  360 +
 src/Rules/Classes/LocalTypeAliasesRule.php    |   31 +
 .../Classes/LocalTypeTraitAliasesRule.php     |   40 +
 .../Classes/LocalTypeTraitUseAliasesRule.php  |   35 +
 src/Rules/Classes/MethodTagCheck.php          |  265 +
 src/Rules/Classes/MethodTagRule.php           |   34 +
 src/Rules/Classes/MethodTagTraitRule.php      |   40 +
 src/Rules/Classes/MethodTagTraitUseRule.php   |   35 +
 src/Rules/Classes/MixinCheck.php              |  171 +
 src/Rules/Classes/MixinRule.php               |   31 +
 src/Rules/Classes/MixinTraitRule.php          |   42 +
 src/Rules/Classes/MixinTraitUseRule.php       |   35 +
 src/Rules/Classes/NewStaticRule.php           |   82 +
 .../Classes/NonClassAttributeClassRule.php    |   84 +
 src/Rules/Classes/PropertyTagCheck.php        |  246 +
 src/Rules/Classes/PropertyTagRule.php         |   31 +
 src/Rules/Classes/PropertyTagTraitRule.php    |   40 +
 src/Rules/Classes/PropertyTagTraitUseRule.php |   35 +
 src/Rules/Classes/ReadOnlyClassRule.php       |   59 +
 src/Rules/Classes/RequireExtendsRule.php      |   88 +
 src/Rules/Classes/RequireImplementsRule.php   |   59 +
 src/Rules/Classes/TraitAttributeClassRule.php |   40 +
 .../UnusedConstructorParametersRule.php       |   71 +
 .../BooleanAndConstantConditionRule.php       |  160 +
 .../BooleanNotConstantConditionRule.php       |   78 +
 .../BooleanOrConstantConditionRule.php        |  160 +
 .../ConstantConditionRuleHelper.php           |   86 +
 .../ConstantLooseComparisonRule.php           |   92 +
 .../DoWhileLoopConstantConditionRule.php      |   96 +
 .../ElseIfConstantConditionRule.php           |   77 +
 .../Comparison/IfConstantConditionRule.php    |   68 +
 .../ImpossibleCheckTypeFunctionCallRule.php   |   94 +
 .../Comparison/ImpossibleCheckTypeHelper.php  |  423 ++
 .../ImpossibleCheckTypeMethodCallRule.php     |  111 +
 ...mpossibleCheckTypeStaticMethodCallRule.php |  121 +
 .../LogicalXorConstantConditionRule.php       |  110 +
 src/Rules/Comparison/MatchExpressionRule.php  |  175 +
 ...mparisonOperatorsConstantConditionRule.php |   98 +
 .../StrictComparisonOfDifferentTypesRule.php  |  150 +
 .../TernaryOperatorConstantConditionRule.php  |   65 +
 .../UsageOfVoidMatchExpressionRule.php        |   34 +
 .../WhileLoopAlwaysFalseConditionRule.php     |   65 +
 .../WhileLoopAlwaysTrueConditionRule.php      |   92 +
 .../AlwaysUsedClassConstantsExtension.php     |   31 +
 ...aysUsedClassConstantsExtensionProvider.php |   16 +
 .../Constants/ClassAsClassConstantRule.php    |   41 +
 src/Rules/Constants/ConstantRule.php          |   40 +
 .../DynamicClassConstantFetchRule.php         |   70 +
 src/Rules/Constants/FinalConstantRule.php     |   44 +
 ...aysUsedClassConstantsExtensionProvider.php |   27 +
 .../Constants/MagicConstantContextRule.php    |   76 +
 .../MissingClassConstantTypehintRule.php      |   97 +
 .../NativeTypedClassConstantRule.php          |   45 +
 .../Constants/OverridingConstantRule.php      |  173 +
 .../ValueAssignedToClassConstantRule.php      |  129 +
 src/Rules/DateTimeInstantiationRule.php       |   72 +
 ...ructorStatementWithoutImpurePointsRule.php |   55 +
 ...nctionStatementWithoutImpurePointsRule.php |   55 +
 ...MethodStatementWithoutImpurePointsRule.php |   72 +
 ...MethodStatementWithoutImpurePointsRule.php |   69 +
 ...onstructorWithoutImpurePointsCollector.php |   57 +
 .../FunctionWithoutImpurePointsCollector.php  |   56 +
 .../MethodWithoutImpurePointsCollector.php    |   60 +
 src/Rules/DeadCode/NoopRule.php               |  139 +
 .../PossiblyPureFuncCallCollector.php         |   51 +
 .../PossiblyPureMethodCallCollector.php       |   75 +
 .../DeadCode/PossiblyPureNewCollector.php     |   61 +
 .../PossiblyPureStaticCallCollector.php       |   56 +
 .../DeadCode/UnreachableStatementRule.php     |   32 +
 .../DeadCode/UnusedPrivateConstantRule.php    |  107 +
 .../DeadCode/UnusedPrivateMethodRule.php      |  196 +
 .../DeadCode/UnusedPrivatePropertyRule.php    |  240 +
 src/Rules/Debug/DebugScopeRule.php            |   67 +
 src/Rules/Debug/DumpPhpDocTypeRule.php        |   60 +
 src/Rules/Debug/DumpTypeRule.php              |   60 +
 src/Rules/Debug/FileAssertRule.php            |  203 +
 src/Rules/DirectRegistry.php                  |   57 +
 .../EnumCases/EnumCaseAttributesRule.php      |   37 +
 .../CatchWithUnthrownExceptionRule.php        |   70 +
 .../CaughtExceptionExistenceRule.php          |   74 +
 .../DefaultExceptionTypeResolver.php          |  101 +
 .../Exceptions/ExceptionTypeResolver.php      |   40 +
 ...ngCheckedExceptionInFunctionThrowsRule.php |   48 +
 ...singCheckedExceptionInMethodThrowsRule.php |   49 +
 ...eckedExceptionInPropertyHookThrowsRule.php |   56 +
 .../MissingCheckedExceptionInThrowsCheck.php  |   62 +
 .../Exceptions/NoncapturingCatchRule.php      |   43 +
 .../OverwrittenExitPointByFinallyRule.php     |   70 +
 src/Rules/Exceptions/ThrowExprTypeRule.php    |   63 +
 src/Rules/Exceptions/ThrowExpressionRule.php  |   45 +
 ...VoidFunctionWithExplicitThrowPointRule.php |   72 +
 ...wsVoidMethodWithExplicitThrowPointRule.php |   73 +
 ...PropertyHookWithExplicitThrowPointRule.php |   80 +
 .../TooWideFunctionThrowTypeRule.php          |   52 +
 .../Exceptions/TooWideMethodThrowTypeRule.php |   68 +
 .../TooWidePropertyHookThrowTypeRule.php      |   75 +
 .../Exceptions/TooWideThrowTypeCheck.php      |   51 +
 src/Rules/FileRuleError.php                   |   14 +
 src/Rules/FoundTypeResult.php                 |   53 +
 src/Rules/FunctionCallParametersCheck.php     |  659 ++
 src/Rules/FunctionDefinitionCheck.php         |  733 ++
 src/Rules/FunctionReturnTypeCheck.php         |  112 +
 src/Rules/Functions/ArrayFilterRule.php       |  139 +
 src/Rules/Functions/ArrayValuesRule.php       |  115 +
 .../Functions/ArrowFunctionAttributesRule.php |   38 +
 .../ArrowFunctionReturnNullsafeByRefRule.php  |   45 +
 .../Functions/ArrowFunctionReturnTypeRule.php |   71 +
 src/Rules/Functions/CallCallablesRule.php     |  143 +
 .../CallToFunctionParametersRule.php          |   73 +
 ...unctionStatementWithoutSideEffectsRule.php |  141 +
 .../CallToNonExistentFunctionRule.php         |   72 +
 src/Rules/Functions/CallUserFuncRule.php      |   89 +
 src/Rules/Functions/ClosureAttributesRule.php |   38 +
 src/Rules/Functions/ClosureReturnTypeRule.php |   67 +
 src/Rules/Functions/DefineParametersRule.php  |   58 +
 .../DuplicateFunctionDeclarationRule.php      |   60 +
 ...ingClassesInArrowFunctionTypehintsRule.php |   56 +
 .../ExistingClassesInClosureTypehintsRule.php |   41 +
 .../ExistingClassesInTypehintsRule.php        |   57 +
 .../Functions/FunctionAttributesRule.php      |   38 +
 src/Rules/Functions/FunctionCallableRule.php  |  114 +
 .../ImplodeParameterCastableToStringRule.php  |  118 +
 ...eArrowFunctionDefaultParameterTypeRule.php |   71 +
 ...patibleClosureDefaultParameterTypeRule.php |   71 +
 .../IncompatibleDefaultParameterTypeRule.php  |   71 +
 src/Rules/Functions/InnerFunctionRule.php     |   36 +
 ...nvalidLexicalVariablesInClosureUseRule.php |   87 +
 .../MissingFunctionParameterTypehintRule.php  |  117 +
 .../MissingFunctionReturnTypehintRule.php     |   78 +
 src/Rules/Functions/ParamAttributesRule.php   |   44 +
 .../ParameterCastableToNumberRule.php         |   85 +
 .../ParameterCastableToStringRule.php         |  119 +
 .../Functions/PrintfArrayParametersRule.php   |  189 +
 src/Rules/Functions/PrintfHelper.php          |   76 +
 src/Rules/Functions/PrintfParametersRule.php  |  119 +
 .../Functions/RandomIntParametersRule.php     |   80 +
 .../Functions/RedefinedParametersRule.php     |   61 +
 .../Functions/ReturnNullsafeByRefRule.php     |   55 +
 src/Rules/Functions/ReturnTypeRule.php        |   71 +
 .../SortParameterCastableToStringRule.php     |  151 +
 src/Rules/Functions/UnusedClosureUsesRule.php |   43 +
 .../UselessFunctionReturnValueRule.php        |   90 +
 .../VariadicParametersDeclarationRule.php     |   52 +
 src/Rules/Generators/YieldFromTypeRule.php    |  146 +
 src/Rules/Generators/YieldInGeneratorRule.php |   78 +
 src/Rules/Generators/YieldTypeRule.php        |   97 +
 src/Rules/Generics/ClassAncestorsRule.php     |   90 +
 src/Rules/Generics/ClassTemplateTypeRule.php  |   59 +
 .../Generics/CrossCheckInterfacesHelper.php   |   95 +
 src/Rules/Generics/EnumAncestorsRule.php      |   88 +
 src/Rules/Generics/EnumTemplateTypeRule.php   |   46 +
 .../FunctionSignatureVarianceRule.php         |   45 +
 .../Generics/FunctionTemplateTypeRule.php     |   70 +
 src/Rules/Generics/GenericAncestorsCheck.php  |  197 +
 src/Rules/Generics/GenericObjectTypeCheck.php |  193 +
 src/Rules/Generics/InterfaceAncestorsRule.php |   88 +
 .../Generics/InterfaceTemplateTypeRule.php    |   56 +
 .../Generics/MethodSignatureVarianceRule.php  |   44 +
 .../Generics/MethodTagTemplateTypeCheck.php   |   84 +
 .../Generics/MethodTagTemplateTypeRule.php    |   43 +
 .../MethodTagTemplateTypeTraitRule.php        |   53 +
 src/Rules/Generics/MethodTemplateTypeRule.php |   89 +
 src/Rules/Generics/PropertyVarianceRule.php   |   56 +
 src/Rules/Generics/TemplateTypeCheck.php      |  213 +
 src/Rules/Generics/TraitTemplateTypeRule.php  |   70 +
 src/Rules/Generics/UsedTraitsRule.php         |   90 +
 src/Rules/Generics/VarianceCheck.php          |  111 +
 src/Rules/IdentifierRuleError.php             |   12 +
 src/Rules/Ignore/IgnoreParseErrorRule.php     |   48 +
 src/Rules/IssetCheck.php                      |  298 +
 .../Keywords/ContinueBreakInLoopRule.php      |   83 +
 src/Rules/Keywords/DeclareStrictTypesRule.php |   81 +
 src/Rules/Keywords/RequireFileExistsRule.php  |  138 +
 src/Rules/LazyRegistry.php                    |   72 +
 src/Rules/LineRuleError.php                   |   12 +
 src/Rules/MetadataRuleError.php               |   15 +
 .../AbstractMethodInNonAbstractClassRule.php  |   76 +
 .../Methods/AbstractPrivateMethodRule.php     |   59 +
 .../Methods/AlwaysUsedMethodExtension.php     |   28 +
 .../AlwaysUsedMethodExtensionProvider.php     |   16 +
 src/Rules/Methods/CallMethodsRule.php         |   79 +
 .../CallPrivateMethodThroughStaticRule.php    |   63 +
 src/Rules/Methods/CallStaticMethodsRule.php   |   89 +
 ...tructorStatementWithoutSideEffectsRule.php |   73 +
 ...oMethodStatementWithoutSideEffectsRule.php |   82 +
 ...cMethodStatementWithoutSideEffectsRule.php |  104 +
 .../Methods/ConsistentConstructorRule.php     |   59 +
 .../Methods/ConstructorReturnTypeRule.php     |   64 +
 ...irectAlwaysUsedMethodExtensionProvider.php |   21 +
 .../ExistingClassesInTypehintsRule.php        |   68 +
 src/Rules/Methods/FinalPrivateMethodRule.php  |   46 +
 .../IncompatibleDefaultParameterTypeRule.php  |   73 +
 .../LazyAlwaysUsedMethodExtensionProvider.php |   23 +
 src/Rules/Methods/MethodAttributesRule.php    |   38 +
 src/Rules/Methods/MethodCallCheck.php         |  151 +
 src/Rules/Methods/MethodCallableRule.php      |   67 +
 .../MethodParameterComparisonHelper.php       |  411 +
 src/Rules/Methods/MethodSignatureRule.php     |  292 +
 .../MethodVisibilityComparisonHelper.php      |   52 +
 .../MethodVisibilityInInterfaceRule.php       |   48 +
 .../MissingMagicSerializationMethodsRule.php  |   88 +
 .../MissingMethodImplementationRule.php       |   67 +
 .../MissingMethodParameterTypehintRule.php    |  121 +
 .../MissingMethodReturnTypehintRule.php       |   91 +
 .../Methods/MissingMethodSelfOutTypeRule.php  |   85 +
 src/Rules/Methods/NullsafeMethodCallRule.php  |   38 +
 src/Rules/Methods/OverridingMethodRule.php    |  393 +
 src/Rules/Methods/ReturnTypeRule.php          |  131 +
 src/Rules/Methods/StaticMethodCallCheck.php   |  302 +
 .../Methods/StaticMethodCallableRule.php      |   67 +
 src/Rules/Missing/MissingReturnRule.php       |  152 +
 src/Rules/MissingTypehintCheck.php            |  185 +
 src/Rules/Names/UsedNamesRule.php             |  150 +
 .../ExistingNamesInGroupUseRule.php           |  132 +
 .../Namespaces/ExistingNamesInUseRule.php     |  131 +
 src/Rules/NonIgnorableRuleError.php           |   10 +
 src/Rules/NullsafeCheck.php                   |   59 +
 src/Rules/Operators/InvalidAssignVarRule.php  |  107 +
 .../Operators/InvalidBinaryOperationRule.php  |  124 +
 .../InvalidComparisonOperationRule.php        |  168 +
 .../Operators/InvalidIncDecOperationRule.php  |  113 +
 .../Operators/InvalidUnaryOperationRule.php   |   96 +
 src/Rules/ParameterCastableToStringCheck.php  |   73 +
 src/Rules/PhpDoc/AssertRuleHelper.php         |  210 +
 .../ConditionalReturnTypeRuleHelper.php       |  129 +
 src/Rules/PhpDoc/FunctionAssertRule.php       |   38 +
 .../FunctionConditionalReturnTypeRule.php     |   38 +
 .../PhpDoc/GenericCallableRuleHelper.php      |  121 +
 ...ncompatibleClassConstantPhpDocTypeRule.php |  139 +
 ...bleParamImmediatelyInvokedCallableRule.php |   95 +
 .../PhpDoc/IncompatiblePhpDocTypeCheck.php    |  237 +
 .../PhpDoc/IncompatiblePhpDocTypeRule.php     |  110 +
 ...IncompatiblePropertyHookPhpDocTypeRule.php |   86 +
 .../IncompatiblePropertyPhpDocTypeRule.php    |  154 +
 .../PhpDoc/IncompatibleSelfOutTypeRule.php    |  104 +
 src/Rules/PhpDoc/InvalidPHPStanDocTagRule.php |  119 +
 .../PhpDoc/InvalidPhpDocTagValueRule.php      |  101 +
 .../PhpDoc/InvalidPhpDocVarTagTypeRule.php    |  161 +
 .../PhpDoc/InvalidThrowsPhpDocValueRule.php   |  113 +
 src/Rules/PhpDoc/MethodAssertRule.php         |   38 +
 .../MethodConditionalReturnTypeRule.php       |   38 +
 src/Rules/PhpDoc/PhpDocLineHelper.php         |   29 +
 src/Rules/PhpDoc/RequireExtendsCheck.php      |   84 +
 .../RequireExtendsDefinitionClassRule.php     |   51 +
 .../RequireExtendsDefinitionTraitRule.php     |   44 +
 .../RequireImplementsDefinitionClassRule.php  |   41 +
 .../RequireImplementsDefinitionTraitRule.php  |   87 +
 src/Rules/PhpDoc/UnresolvableTypeHelper.php   |   33 +
 .../VarTagChangedExpressionTypeRule.php       |   31 +
 src/Rules/PhpDoc/VarTagTypeRuleHelper.php     |  193 +
 .../PhpDoc/WrongVariableNameInVarTagRule.php  |  415 ++
 src/Rules/Playground/FunctionNeverRule.php    |   52 +
 src/Rules/Playground/MethodNeverRule.php      |   53 +
 src/Rules/Playground/NeverRuleHelper.php      |   50 +
 src/Rules/Playground/NoPhpCodeRule.php        |   42 +
 src/Rules/Playground/NotAnalysedTraitRule.php |   63 +
 src/Rules/Playground/PromoteParameterRule.php |   62 +
 .../Playground/StaticVarWithoutTypeRule.php   |   82 +
 ...AccessPrivatePropertyThroughStaticRule.php |   65 +
 .../Properties/AccessPropertiesCheck.php      |  202 +
 .../AccessPropertiesInAssignRule.php          |   39 +
 src/Rules/Properties/AccessPropertiesRule.php |   31 +
 .../AccessStaticPropertiesInAssignRule.php    |   39 +
 .../Properties/AccessStaticPropertiesRule.php |  245 +
 ...aultValueTypesAssignedToPropertiesRule.php |   69 +
 ...ctReadWritePropertiesExtensionProvider.php |   24 +
 .../ExistingClassesInPropertiesRule.php       |   98 +
 ...tingClassesInPropertyHookTypehintsRule.php |   88 +
 .../Properties/FoundPropertyReflection.php    |  182 +
 .../GetNonVirtualPropertyHookReadRule.php     |  129 +
 .../InvalidCallablePropertyTypeRule.php       |   66 +
 ...zyReadWritePropertiesExtensionProvider.php |   27 +
 .../MissingPropertyTypehintRule.php           |   89 +
 ...singReadOnlyByPhpDocPropertyAssignRule.php |   80 +
 .../MissingReadOnlyPropertyAssignRule.php     |   83 +
 .../Properties/NullsafePropertyFetchRule.php  |   46 +
 .../Properties/OverridingPropertyRule.php     |  346 +
 .../Properties/PropertiesInInterfaceRule.php  |  102 +
 .../Properties/PropertyAssignRefRule.php      |   72 +
 .../Properties/PropertyAttributesRule.php     |   37 +
 src/Rules/Properties/PropertyDescriptor.php   |   42 +
 .../Properties/PropertyHookAttributesRule.php |   38 +
 src/Rules/Properties/PropertyInClassRule.php  |  143 +
 .../Properties/PropertyReflectionFinder.php   |  127 +
 .../ReadOnlyByPhpDocPropertyAssignRefRule.php |   58 +
 .../ReadOnlyByPhpDocPropertyAssignRule.php    |  118 +
 .../ReadOnlyByPhpDocPropertyRule.php          |   39 +
 .../ReadOnlyPropertyAssignRefRule.php         |   58 +
 .../Properties/ReadOnlyPropertyAssignRule.php |  101 +
 src/Rules/Properties/ReadOnlyPropertyRule.php |   63 +
 .../ReadWritePropertiesExtension.php          |   35 +
 .../ReadWritePropertiesExtensionProvider.php  |   16 +
 .../ReadingWriteOnlyPropertiesRule.php        |   78 +
 .../SetNonVirtualPropertyHookAssignRule.php   |   94 +
 .../SetPropertyHookParameterRule.php          |  158 +
 .../TypesAssignedToPropertiesRule.php         |  119 +
 .../Properties/UninitializedPropertyRule.php  |   69 +
 .../WritingToReadOnlyPropertiesRule.php       |   68 +
 src/Rules/Pure/FunctionPurityCheck.php        |  144 +
 src/Rules/Pure/PureFunctionRule.php           |   44 +
 src/Rules/Pure/PureMethodRule.php             |   44 +
 .../Regexp/RegularExpressionPatternRule.php   |  133 +
 .../Regexp/RegularExpressionQuotingRule.php   |  243 +
 src/Rules/Registry.php                        |   18 +
 src/Rules/Rule.php                            |   40 +
 src/Rules/RuleError.php                       |   12 +
 src/Rules/RuleErrorBuilder.php                |  285 +
 src/Rules/RuleErrors/RuleError1.php           |   21 +
 src/Rules/RuleErrors/RuleError101.php         |   49 +
 src/Rules/RuleErrors/RuleError103.php         |   57 +
 src/Rules/RuleErrors/RuleError105.php         |   42 +
 src/Rules/RuleErrors/RuleError107.php         |   50 +
 src/Rules/RuleErrors/RuleError109.php         |   57 +
 src/Rules/RuleErrors/RuleError11.php          |   37 +
 src/Rules/RuleErrors/RuleError111.php         |   65 +
 src/Rules/RuleErrors/RuleError113.php         |   42 +
 src/Rules/RuleErrors/RuleError115.php         |   50 +
 src/Rules/RuleErrors/RuleError117.php         |   57 +
 src/Rules/RuleErrors/RuleError119.php         |   65 +
 src/Rules/RuleErrors/RuleError121.php         |   50 +
 src/Rules/RuleErrors/RuleError123.php         |   58 +
 src/Rules/RuleErrors/RuleError125.php         |   65 +
 src/Rules/RuleErrors/RuleError127.php         |   73 +
 src/Rules/RuleErrors/RuleError13.php          |   44 +
 src/Rules/RuleErrors/RuleError15.php          |   52 +
 src/Rules/RuleErrors/RuleError17.php          |   29 +
 src/Rules/RuleErrors/RuleError19.php          |   37 +
 src/Rules/RuleErrors/RuleError21.php          |   44 +
 src/Rules/RuleErrors/RuleError23.php          |   52 +
 src/Rules/RuleErrors/RuleError25.php          |   37 +
 src/Rules/RuleErrors/RuleError27.php          |   45 +
 src/Rules/RuleErrors/RuleError29.php          |   52 +
 src/Rules/RuleErrors/RuleError3.php           |   29 +
 src/Rules/RuleErrors/RuleError31.php          |   60 +
 src/Rules/RuleErrors/RuleError33.php          |   33 +
 src/Rules/RuleErrors/RuleError35.php          |   41 +
 src/Rules/RuleErrors/RuleError37.php          |   48 +
 src/Rules/RuleErrors/RuleError39.php          |   56 +
 src/Rules/RuleErrors/RuleError41.php          |   41 +
 src/Rules/RuleErrors/RuleError43.php          |   49 +
 src/Rules/RuleErrors/RuleError45.php          |   56 +
 src/Rules/RuleErrors/RuleError47.php          |   64 +
 src/Rules/RuleErrors/RuleError49.php          |   41 +
 src/Rules/RuleErrors/RuleError5.php           |   36 +
 src/Rules/RuleErrors/RuleError51.php          |   49 +
 src/Rules/RuleErrors/RuleError53.php          |   56 +
 src/Rules/RuleErrors/RuleError55.php          |   64 +
 src/Rules/RuleErrors/RuleError57.php          |   49 +
 src/Rules/RuleErrors/RuleError59.php          |   57 +
 src/Rules/RuleErrors/RuleError61.php          |   64 +
 src/Rules/RuleErrors/RuleError63.php          |   72 +
 src/Rules/RuleErrors/RuleError65.php          |   22 +
 src/Rules/RuleErrors/RuleError67.php          |   30 +
 src/Rules/RuleErrors/RuleError69.php          |   37 +
 src/Rules/RuleErrors/RuleError7.php           |   44 +
 src/Rules/RuleErrors/RuleError71.php          |   45 +
 src/Rules/RuleErrors/RuleError73.php          |   30 +
 src/Rules/RuleErrors/RuleError75.php          |   38 +
 src/Rules/RuleErrors/RuleError77.php          |   45 +
 src/Rules/RuleErrors/RuleError79.php          |   53 +
 src/Rules/RuleErrors/RuleError81.php          |   30 +
 src/Rules/RuleErrors/RuleError83.php          |   38 +
 src/Rules/RuleErrors/RuleError85.php          |   45 +
 src/Rules/RuleErrors/RuleError87.php          |   53 +
 src/Rules/RuleErrors/RuleError89.php          |   38 +
 src/Rules/RuleErrors/RuleError9.php           |   29 +
 src/Rules/RuleErrors/RuleError91.php          |   46 +
 src/Rules/RuleErrors/RuleError93.php          |   53 +
 src/Rules/RuleErrors/RuleError95.php          |   61 +
 src/Rules/RuleErrors/RuleError97.php          |   34 +
 src/Rules/RuleErrors/RuleError99.php          |   42 +
 src/Rules/RuleLevelHelper.php                 |  320 +
 src/Rules/RuleLevelHelperAcceptsResult.php    |   45 +
 src/Rules/TipRuleError.php                    |   12 +
 ...TooWideArrowFunctionReturnTypehintRule.php |   62 +
 .../TooWideClosureReturnTypehintRule.php      |   84 +
 .../TooWideFunctionParameterOutTypeRule.php   |   41 +
 .../TooWideFunctionReturnTypehintRule.php     |   92 +
 .../TooWideMethodParameterOutTypeRule.php     |   41 +
 .../TooWideMethodReturnTypehintRule.php       |  120 +
 .../TooWideParameterOutTypeCheck.php          |  119 +
 .../TooWidePropertyTypeRule.php               |  136 +
 .../Traits/ConflictingTraitConstantsRule.php  |  253 +
 src/Rules/Traits/ConstantsInTraitsRule.php    |   47 +
 src/Rules/Traits/NotAnalysedTraitRule.php     |   65 +
 src/Rules/Traits/TraitAttributesRule.php      |   52 +
 .../Traits/TraitDeclarationCollector.php      |   30 +
 src/Rules/Traits/TraitUseCollector.php        |   31 +
 src/Rules/Types/InvalidTypesInUnionRule.php   |  126 +
 src/Rules/UnusedFunctionParametersCheck.php   |  119 +
 src/Rules/Variables/CompactVariablesRule.php  |   91 +
 src/Rules/Variables/DefinedVariableRule.php   |   73 +
 src/Rules/Variables/EmptyRule.php             |   68 +
 src/Rules/Variables/IssetRule.php             |   52 +
 src/Rules/Variables/NullCoalesceRule.php      |   57 +
 .../ParameterOutAssignedTypeRule.php          |  121 +
 .../ParameterOutExecutionEndTypeRule.php      |  133 +
 src/Rules/Variables/UnsetRule.php             |   78 +
 src/Rules/Variables/VariableCloningRule.php   |   68 +
 src/Rules/Whitespace/FileWhitespaceRule.php   |   96 +
 src/ShouldNotHappenException.php              |   17 +
 src/Testing/ErrorFormatterTestCase.php        |  140 +
 src/Testing/LevelsTestCase.php                |  210 +
 src/Testing/PHPStanTestCase.php               |  251 +
 src/Testing/RuleTestCase.php                  |  227 +
 src/Testing/TestCaseSourceLocatorFactory.php  |   92 +
 src/Testing/TypeInferenceTestCase.php         |  368 +
 src/Testing/functions.php                     |   49 +
 src/TrinaryLogic.php                          |  255 +
 src/Type/AcceptsResult.php                    |  131 +
 src/Type/Accessory/AccessoryArrayListType.php |  503 ++
 .../Accessory/AccessoryLiteralStringType.php  |  375 +
 .../AccessoryLowercaseStringType.php          |  380 +
 .../Accessory/AccessoryNonEmptyStringType.php |  385 +
 .../Accessory/AccessoryNonFalsyStringType.php |  374 +
 .../Accessory/AccessoryNumericStringType.php  |  387 +
 src/Type/Accessory/AccessoryType.php          |   11 +
 .../AccessoryUppercaseStringType.php          |  380 +
 src/Type/Accessory/HasMethodType.php          |  200 +
 src/Type/Accessory/HasOffsetType.php          |  427 ++
 src/Type/Accessory/HasOffsetValueType.php     |  487 ++
 src/Type/Accessory/HasPropertyType.php        |  159 +
 src/Type/Accessory/NonEmptyArrayType.php      |  479 ++
 src/Type/Accessory/OversizedArrayType.php     |  463 ++
 src/Type/ArrayType.php                        |  572 ++
 src/Type/BenevolentUnionType.php              |  182 +
 src/Type/BitwiseFlagHelper.php                |  108 +
 src/Type/BooleanType.php                      |  194 +
 src/Type/CallableType.php                     |  682 ++
 src/Type/CallableTypeHelper.php               |  119 +
 .../CircularTypeAliasDefinitionException.php  |   11 +
 src/Type/CircularTypeAliasErrorType.php       |   10 +
 src/Type/ClassStringType.php                  |   98 +
 src/Type/ClosureType.php                      |  805 ++
 src/Type/ClosureTypeFactory.php               |  120 +
 src/Type/CompoundType.php                     |   21 +
 src/Type/ConditionalType.php                  |  221 +
 src/Type/ConditionalTypeForParameter.php      |  178 +
 src/Type/Constant/ConstantArrayType.php       | 1692 +++++
 .../Constant/ConstantArrayTypeAndMethod.php   |   69 +
 .../Constant/ConstantArrayTypeBuilder.php     |  322 +
 src/Type/Constant/ConstantBooleanType.php     |  145 +
 src/Type/Constant/ConstantFloatType.php       |  104 +
 src/Type/Constant/ConstantIntegerType.php     |  109 +
 .../Constant/ConstantScalarToBooleanTrait.php |   16 +
 src/Type/Constant/ConstantStringType.php      |  572 ++
 src/Type/Constant/OversizedArrayBuilder.php   |  102 +
 src/Type/ConstantScalarType.php               |   15 +
 src/Type/ConstantTypeHelper.php               |   72 +
 src/Type/DirectTypeAliasResolverProvider.php  |   18 +
 .../DynamicFunctionReturnTypeExtension.php    |   34 +
 .../DynamicFunctionThrowTypeExtension.php     |   34 +
 src/Type/DynamicMethodReturnTypeExtension.php |   37 +
 src/Type/DynamicMethodThrowTypeExtension.php  |   34 +
 .../DynamicReturnTypeExtensionRegistry.php    |   97 +
 ...DynamicStaticMethodReturnTypeExtension.php |   37 +
 .../DynamicStaticMethodThrowTypeExtension.php |   34 +
 src/Type/Enum/EnumCaseObjectType.php          |  205 +
 src/Type/ErrorType.php                        |   45 +
 src/Type/ExponentiateHelper.php               |  132 +
 src/Type/ExpressionTypeResolverExtension.php  |   29 +
 ...xpressionTypeResolverExtensionRegistry.php |   26 +
 src/Type/FileTypeMapper.php                   |  833 +++
 src/Type/FloatType.php                        |  297 +
 .../FunctionParameterClosureTypeExtension.php |   33 +
 .../FunctionParameterOutTypeExtension.php     |   33 +
 src/Type/FunctionTypeSpecifyingExtension.php  |   36 +
 src/Type/GeneralizePrecision.php              |   59 +
 src/Type/Generic/GenericClassStringType.php   |  226 +
 src/Type/Generic/GenericObjectType.php        |  394 +
 src/Type/Generic/GenericStaticType.php        |  273 +
 src/Type/Generic/TemplateArrayType.php        |   44 +
 .../Generic/TemplateBenevolentUnionType.php   |   68 +
 src/Type/Generic/TemplateBooleanType.php      |   44 +
 .../Generic/TemplateConstantArrayType.php     |   44 +
 .../Generic/TemplateConstantIntegerType.php   |   44 +
 .../Generic/TemplateConstantStringType.php    |   44 +
 src/Type/Generic/TemplateFloatType.php        |   44 +
 .../Generic/TemplateGenericObjectType.php     |   51 +
 src/Type/Generic/TemplateIntegerType.php      |   44 +
 src/Type/Generic/TemplateIntersectionType.php |   38 +
 src/Type/Generic/TemplateKeyOfType.php        |   58 +
 src/Type/Generic/TemplateMixedType.php        |   67 +
 src/Type/Generic/TemplateObjectShapeType.php  |   44 +
 src/Type/Generic/TemplateObjectType.php       |   40 +
 .../TemplateObjectWithoutClassType.php        |   40 +
 src/Type/Generic/TemplateStrictMixedType.php  |   49 +
 src/Type/Generic/TemplateStringType.php       |   44 +
 src/Type/Generic/TemplateType.php             |   33 +
 .../Generic/TemplateTypeArgumentStrategy.php  |   47 +
 src/Type/Generic/TemplateTypeFactory.php      |  119 +
 src/Type/Generic/TemplateTypeHelper.php       |  152 +
 src/Type/Generic/TemplateTypeMap.php          |  221 +
 .../Generic/TemplateTypeParameterStrategy.php |   30 +
 src/Type/Generic/TemplateTypeReference.php    |   23 +
 src/Type/Generic/TemplateTypeScope.php        |   72 +
 src/Type/Generic/TemplateTypeStrategy.php     |   16 +
 src/Type/Generic/TemplateTypeTrait.php        |  370 +
 src/Type/Generic/TemplateTypeVariance.php     |  240 +
 src/Type/Generic/TemplateTypeVarianceMap.php  |   54 +
 src/Type/Generic/TemplateUnionType.php        |   55 +
 src/Type/Generic/TypeProjectionHelper.php     |   32 +
 src/Type/Helper/GetTemplateTypeType.php       |  107 +
 src/Type/IntegerRangeType.php                 |  758 ++
 src/Type/IntegerType.php                      |  200 +
 src/Type/IntersectionType.php                 | 1363 ++++
 src/Type/IsSuperTypeOfResult.php              |  165 +
 src/Type/IterableType.php                     |  518 ++
 src/Type/JustNullableTypeTrait.php            |  173 +
 src/Type/KeyOfType.php                        |   95 +
 src/Type/LateResolvableType.php               |   14 +
 src/Type/LazyTypeAliasResolverProvider.php    |   20 +
 src/Type/LooseComparisonHelper.php            |   51 +
 .../MethodParameterClosureTypeExtension.php   |   33 +
 src/Type/MethodParameterOutTypeExtension.php  |   33 +
 src/Type/MethodTypeSpecifyingExtension.php    |   39 +
 src/Type/MixedType.php                        | 1056 +++
 src/Type/NeverType.php                        |  537 ++
 src/Type/NewObjectType.php                    |   95 +
 src/Type/NonAcceptingNeverType.php            |   42 +
 src/Type/NonexistentParentClassType.php       |  201 +
 src/Type/NullType.php                         |  405 +
 src/Type/ObjectShapePropertyReflection.php    |  148 +
 src/Type/ObjectShapeType.php                  |  526 ++
 src/Type/ObjectType.php                       | 1621 ++++
 src/Type/ObjectWithoutClassType.php           |  226 +
 src/Type/OffsetAccessType.php                 |  118 +
 src/Type/OperatorTypeSpecifyingExtension.php  |   32 +
 ...peratorTypeSpecifyingExtensionRegistry.php |   29 +
 src/Type/ParserNodeTypeToPHPStanType.php      |  103 +
 .../AbsFunctionDynamicReturnTypeExtension.php |   44 +
 ...gumentBasedFunctionReturnTypeExtension.php |   72 +
 ...angeKeyCaseFunctionReturnTypeExtension.php |  160 +
 .../ArrayChunkFunctionReturnTypeExtension.php |   52 +
 ...ArrayColumnFunctionReturnTypeExtension.php |  213 +
 ...rrayCombineFunctionReturnTypeExtension.php |  140 +
 ...ArrayCurrentDynamicReturnTypeExtension.php |   42 +
 .../ArrayFillFunctionReturnTypeExtension.php  |   95 +
 ...rayFillKeysFunctionReturnTypeExtension.php |   42 +
 ...ArrayFilterFunctionReturnTypeExtension.php |   33 +
 .../ArrayFilterFunctionReturnTypeHelper.php   |  341 +
 .../ArrayFindFunctionReturnTypeExtension.php  |   47 +
 ...rrayFindKeyFunctionReturnTypeExtension.php |   37 +
 .../ArrayFlipFunctionReturnTypeExtension.php  |   42 +
 ...ntersectKeyFunctionReturnTypeExtension.php |   63 +
 .../ArrayKeyDynamicReturnTypeExtension.php    |   42 +
 ...yExistsFunctionTypeSpecifyingExtension.php |  124 +
 ...rrayKeyFirstDynamicReturnTypeExtension.php |   42 +
 ...ArrayKeyLastDynamicReturnTypeExtension.php |   42 +
 ...KeysFunctionDynamicReturnTypeExtension.php |   43 +
 .../ArrayMapFunctionReturnTypeExtension.php   |  185 +
 ...ergeFunctionDynamicReturnTypeExtension.php |  138 +
 .../ArrayNextDynamicReturnTypeExtension.php   |   40 +
 ...terFunctionsDynamicReturnTypeExtension.php |   56 +
 .../ArrayPopFunctionReturnTypeExtension.php   |   42 +
 .../ArrayRandFunctionReturnTypeExtension.php  |   66 +
 ...ArrayReduceFunctionReturnTypeExtension.php |   70 +
 ...rrayReplaceFunctionReturnTypeExtension.php |   77 +
 ...rrayReverseFunctionReturnTypeExtension.php |   44 +
 ...archFunctionDynamicReturnTypeExtension.php |   59 +
 ...ySearchFunctionTypeSpecifyingExtension.php |   57 +
 .../ArrayShiftFunctionReturnTypeExtension.php |   42 +
 .../ArraySliceFunctionReturnTypeExtension.php |   48 +
 ...ArraySpliceFunctionReturnTypeExtension.php |   36 +
 ...ySumFunctionDynamicReturnTypeExtension.php |   66 +
 ...luesFunctionDynamicReturnTypeExtension.php |   43 +
 .../AssertFunctionTypeSpecifyingExtension.php |   36 +
 src/Type/Php/AssertThrowTypeExtension.php     |   37 +
 ...umFromMethodDynamicReturnTypeExtension.php |  101 +
 ...codeDynamicFunctionReturnTypeExtension.php |   59 +
 .../BcMathStringOrNullReturnTypeExtension.php |  275 +
 ...sExistsFunctionTypeSpecifyingExtension.php |   76 +
 ...sImplementsFunctionReturnTypeExtension.php |   68 +
 .../ClosureBindDynamicReturnTypeExtension.php |   37 +
 ...losureBindToDynamicReturnTypeExtension.php |   37 +
 ...FromCallableDynamicReturnTypeExtension.php |   64 +
 .../CompactFunctionReturnTypeExtension.php    |   89 +
 .../ConstantFunctionReturnTypeExtension.php   |   56 +
 src/Type/Php/ConstantHelper.php               |   43 +
 ...harsFunctionDynamicReturnTypeExtension.php |   63 +
 .../Php/CountFunctionReturnTypeExtension.php  |   44 +
 .../CountFunctionTypeSpecifyingExtension.php  |   53 +
 ...peDigitFunctionTypeSpecifyingExtension.php |   87 +
 ...infoFunctionDynamicReturnTypeExtension.php |  201 +
 .../DateFormatFunctionReturnTypeExtension.php |   42 +
 .../DateFormatMethodReturnTypeExtension.php   |   44 +
 .../Php/DateFunctionReturnTypeExtension.php   |   41 +
 src/Type/Php/DateFunctionReturnTypeHelper.php |  115 +
 ...eIntervalConstructorThrowTypeExtension.php |   65 +
 ...DateIntervalDynamicReturnTypeExtension.php |   69 +
 ...tePeriodConstructorReturnTypeExtension.php |   85 +
 .../DateTimeConstructorThrowTypeExtension.php |   67 +
 ...teTimeCreateDynamicReturnTypeExtension.php |   50 +
 .../DateTimeDynamicReturnTypeExtension.php    |   52 +
 ...DateTimeModifyMethodThrowTypeExtension.php |   72 +
 .../Php/DateTimeModifyReturnTypeExtension.php |   91 +
 .../DateTimeSubMethodThrowTypeExtension.php   |   44 +
 ...eTimeZoneConstructorThrowTypeExtension.php |   65 +
 .../DefineConstantTypeSpecifyingExtension.php |   64 +
 ...DefinedConstantTypeSpecifyingExtension.php |   71 +
 ...StatDynamicFunctionReturnTypeExtension.php |   51 +
 .../DsMapDynamicMethodThrowTypeExtension.php  |   32 +
 .../Php/DsMapDynamicReturnTypeExtension.php   |   62 +
 ...lodeFunctionDynamicReturnTypeExtension.php |   95 +
 .../Php/FilterFunctionReturnTypeHelper.php    |  451 ++
 .../FilterInputDynamicReturnTypeExtension.php |   39 +
 ...lterVarArrayDynamicReturnTypeExtension.php |  199 +
 .../FilterVarDynamicReturnTypeExtension.php   |   39 +
 ...nExistsFunctionTypeSpecifyingExtension.php |   63 +
 ...tCalledClassDynamicReturnTypeExtension.php |   31 +
 .../GetClassDynamicReturnTypeExtension.php    |   96 +
 ...etDebugTypeFunctionReturnTypeExtension.php |  103 +
 ...DefinedVarsFunctionReturnTypeExtension.php |   47 +
 ...lassDynamicFunctionReturnTypeExtension.php |  105 +
 ...fdayDynamicFunctionReturnTypeExtension.php |   64 +
 .../GettypeFunctionReturnTypeExtension.php    |   91 +
 .../Php/HashFunctionsReturnTypeExtension.php  |  158 +
 ...hlightStringDynamicReturnTypeExtension.php |   52 +
 .../Php/HrtimeFunctionReturnTypeExtension.php |   51 +
 .../ImplodeFunctionReturnTypeExtension.php    |  146 +
 ...InArrayFunctionTypeSpecifyingExtension.php |  168 +
 src/Type/Php/IniGetReturnTypeExtension.php    |   65 +
 src/Type/Php/IntdivThrowTypeExtension.php     |   51 +
 .../IsAFunctionTypeSpecifyingExtension.php    |   64 +
 .../Php/IsAFunctionTypeSpecifyingHelper.php   |   79 +
 ...IsArrayFunctionTypeSpecifyingExtension.php |   47 +
 ...allableFunctionTypeSpecifyingExtension.php |   70 +
 ...terableFunctionTypeSpecifyingExtension.php |   48 +
 ...classOfFunctionTypeSpecifyingExtension.php |   65 +
 ...atorToArrayFunctionReturnTypeExtension.php |   60 +
 ...ThrowOnErrorDynamicReturnTypeExtension.php |  132 +
 src/Type/Php/JsonThrowTypeExtension.php       |   65 +
 .../Php/LtrimFunctionReturnTypeExtension.php  |   44 +
 ...ertEncodingFunctionReturnTypeExtension.php |   46 +
 .../Php/MbFunctionsReturnTypeExtension.php    |   83 +
 .../MbFunctionsReturnTypeExtensionTrait.php   |   58 +
 .../MbStrlenFunctionReturnTypeExtension.php   |  156 +
 ...uteCharacterDynamicReturnTypeExtension.php |  136 +
 .../MethodExistsTypeSpecifyingExtension.php   |   86 +
 .../MicrotimeFunctionReturnTypeExtension.php  |   50 +
 .../Php/MinMaxFunctionReturnTypeExtension.php |  243 +
 ...mptyStringFunctionsReturnTypeExtension.php |   96 +
 ...rmatFunctionDynamicReturnTypeExtension.php |   50 +
 ...penSslEncryptParameterOutTypeExtension.php |   71 +
 .../Php/ParseStrParameterOutTypeExtension.php |   61 +
 ...eUrlFunctionDynamicReturnTypeExtension.php |  229 +
 ...infoFunctionDynamicReturnTypeExtension.php |   99 +
 .../Php/PowFunctionReturnTypeExtension.php    |   31 +
 .../PregFilterFunctionReturnTypeExtension.php |   52 +
 .../PregMatchParameterOutTypeExtension.php    |   56 +
 .../Php/PregMatchTypeSpecifyingExtension.php  |   85 +
 ...regReplaceCallbackClosureTypeExtension.php |   61 +
 .../PregSplitDynamicReturnTypeExtension.php   |   53 +
 .../PropertyExistsTypeSpecifyingExtension.php |   90 +
 .../RandomIntFunctionReturnTypeExtension.php  |   82 +
 .../Php/RangeFunctionReturnTypeExtension.php  |  173 +
 ...tionClassConstructorThrowTypeExtension.php |   43 +
 ...assIsSubclassOfTypeSpecifyingExtension.php |   72 +
 ...nFunctionConstructorThrowTypeExtension.php |   56 +
 ...GetAttributesMethodReturnTypeExtension.php |   51 +
 ...ionMethodConstructorThrowTypeExtension.php |   80 +
 ...nPropertyConstructorThrowTypeExtension.php |   68 +
 src/Type/Php/RegexArrayShapeMatcher.php       |  540 ++
 ...aceFunctionsDynamicReturnTypeExtension.php |  202 +
 .../Php/RoundFunctionReturnTypeExtension.php  |  100 +
 ...SetTypeFunctionTypeSpecifyingExtension.php |   91 +
 ...LElementAsXMLMethodReturnTypeExtension.php |   39 +
 ...lementClassPropertyReflectionExtension.php |   27 +
 ...MLElementConstructorThrowTypeExtension.php |   60 +
 ...LElementXpathMethodReturnTypeExtension.php |   58 +
 ...intfFunctionDynamicReturnTypeExtension.php |  374 +
 ...canfFunctionDynamicReturnTypeExtension.php |   90 +
 .../Php/StatDynamicReturnTypeExtension.php    |   81 +
 .../StrCaseFunctionsReturnTypeExtension.php   |  170 +
 .../StrContainingTypeSpecifyingExtension.php  |  110 +
 ...ntDecrementFunctionReturnTypeExtension.php |  144 +
 .../Php/StrPadFunctionReturnTypeExtension.php |   74 +
 .../StrRepeatFunctionReturnTypeExtension.php  |  114 +
 .../StrSplitFunctionReturnTypeExtension.php   |  140 +
 .../Php/StrTokFunctionReturnTypeExtension.php |   46 +
 ...ountFunctionDynamicReturnTypeExtension.php |   66 +
 .../Php/StrlenFunctionReturnTypeExtension.php |   85 +
 .../StrtotimeFunctionReturnTypeExtension.php  |   71 +
 ...trvalFamilyFunctionReturnTypeExtension.php |   64 +
 .../Php/SubstrDynamicReturnTypeExtension.php  |  131 +
 src/Type/Php/ThrowableReturnTypeExtension.php |   78 +
 ...TriggerErrorDynamicReturnTypeExtension.php |   69 +
 ...TrimFunctionDynamicReturnTypeExtension.php |   53 +
 ...ingFunctionsDynamicReturnTypeExtension.php |   78 +
 ...pareFunctionDynamicReturnTypeExtension.php |  125 +
 .../Php/XMLReaderOpenReturnTypeExtension.php  |   48 +
 src/Type/RecursionGuard.php                   |   32 +
 src/Type/Regex/RegexAlternation.php           |   48 +
 src/Type/Regex/RegexAstWalkResult.php         |  106 +
 src/Type/Regex/RegexCapturingGroup.php        |  132 +
 src/Type/Regex/RegexExpressionHelper.php      |  163 +
 src/Type/Regex/RegexGroupParser.php           |  689 ++
 src/Type/Regex/RegexGroupWalkResult.php       |  122 +
 src/Type/Regex/RegexNonCapturingGroup.php     |   56 +
 src/Type/ResourceType.php                     |  130 +
 src/Type/SimultaneousTypeTraverser.php        |   40 +
 ...ticMethodParameterClosureTypeExtension.php |   33 +
 .../StaticMethodParameterOutTypeExtension.php |   33 +
 .../StaticMethodTypeSpecifyingExtension.php   |   39 +
 src/Type/StaticType.php                       |  747 ++
 src/Type/StaticTypeFactory.php                |   45 +
 src/Type/StrictMixedType.php                  |  444 ++
 ...gAlwaysAcceptingObjectWithToStringType.php |   57 +
 src/Type/StringType.php                       |  320 +
 src/Type/SubtractableType.php                 |   17 +
 src/Type/ThisType.php                         |   89 +
 src/Type/Traits/ArrayTypeTrait.php            |  212 +
 .../ConstantNumericComparisonTypeTrait.php    |   79 +
 src/Type/Traits/ConstantScalarTypeTrait.php   |  129 +
 src/Type/Traits/FalseyBooleanTypeTrait.php    |   17 +
 src/Type/Traits/LateResolvableTypeTrait.php   |  597 ++
 src/Type/Traits/MaybeArrayTypeTrait.php       |  103 +
 src/Type/Traits/MaybeCallableTypeTrait.php    |   23 +
 src/Type/Traits/MaybeIterableTypeTrait.php    |   68 +
 src/Type/Traits/MaybeObjectTypeTrait.php      |  111 +
 .../Traits/MaybeOffsetAccessibleTypeTrait.php |   43 +
 src/Type/Traits/NonArrayTypeTrait.php         |  103 +
 src/Type/Traits/NonCallableTypeTrait.php      |   23 +
 src/Type/Traits/NonGeneralizableTypeTrait.php |   17 +
 src/Type/Traits/NonGenericTypeTrait.php       |   23 +
 src/Type/Traits/NonIterableTypeTrait.php      |   58 +
 src/Type/Traits/NonObjectTypeTrait.php        |  105 +
 .../Traits/NonOffsetAccessibleTypeTrait.php   |   43 +
 src/Type/Traits/NonRemoveableTypeTrait.php    |   16 +
 src/Type/Traits/ObjectTypeTrait.php           |  282 +
 src/Type/Traits/TruthyBooleanTypeTrait.php    |   17 +
 src/Type/Traits/UndecidedBooleanTypeTrait.php |   16 +
 .../UndecidedComparisonCompoundTypeTrait.php  |   25 +
 .../Traits/UndecidedComparisonTypeTrait.php   |   44 +
 src/Type/Type.php                             |  359 +
 src/Type/TypeAlias.php                        |   42 +
 src/Type/TypeAliasResolver.php                |   15 +
 src/Type/TypeAliasResolverProvider.php        |   11 +
 src/Type/TypeCombinator.php                   | 1399 ++++
 src/Type/TypeResult.php                       |   30 +
 src/Type/TypeTraverser.php                    |   62 +
 src/Type/TypeUtils.php                        |  239 +
 src/Type/TypeWithClassName.php                |   18 +
 src/Type/TypehintHelper.php                   |  156 +
 src/Type/UnionType.php                        | 1198 +++
 src/Type/UnionTypeHelper.php                  |  139 +
 src/Type/UsefulTypeAliasResolver.php          |  154 +
 src/Type/ValueOfType.php                      |  104 +
 src/Type/VerbosityLevel.php                   |  236 +
 src/Type/VoidType.php                         |  273 +
 src/autoloadFunctions.php                     |   12 +
 src/debugScope.php                            |   15 +
 src/dumpType.php                              |   28 +
 1337 files changed, 162689 insertions(+), 4 deletions(-)
 create mode 100644 src/AnalysedCodeException.php
 create mode 100644 src/Analyser/Analyser.php
 create mode 100644 src/Analyser/AnalyserResult.php
 create mode 100644 src/Analyser/AnalyserResultFinalizer.php
 create mode 100644 src/Analyser/ArgumentsNormalizer.php
 create mode 100644 src/Analyser/ConditionalExpressionHolder.php
 create mode 100644 src/Analyser/ConstantResolver.php
 create mode 100644 src/Analyser/ConstantResolverFactory.php
 create mode 100644 src/Analyser/DirectInternalScopeFactory.php
 create mode 100644 src/Analyser/EndStatementResult.php
 create mode 100644 src/Analyser/EnsuredNonNullabilityResult.php
 create mode 100644 src/Analyser/EnsuredNonNullabilityResultExpression.php
 create mode 100644 src/Analyser/Error.php
 create mode 100644 src/Analyser/ExpressionContext.php
 create mode 100644 src/Analyser/ExpressionResult.php
 create mode 100644 src/Analyser/ExpressionTypeHolder.php
 create mode 100644 src/Analyser/FileAnalyser.php
 create mode 100644 src/Analyser/FileAnalyserResult.php
 create mode 100644 src/Analyser/FinalizerResult.php
 create mode 100644 src/Analyser/Ignore/IgnoreLexer.php
 create mode 100644 src/Analyser/Ignore/IgnoreParseException.php
 create mode 100644 src/Analyser/Ignore/IgnoredError.php
 create mode 100644 src/Analyser/Ignore/IgnoredErrorHelper.php
 create mode 100644 src/Analyser/Ignore/IgnoredErrorHelperProcessedResult.php
 create mode 100644 src/Analyser/Ignore/IgnoredErrorHelperResult.php
 create mode 100644 src/Analyser/ImpurePoint.php
 create mode 100644 src/Analyser/InternalError.php
 create mode 100644 src/Analyser/InternalScopeFactory.php
 create mode 100644 src/Analyser/LazyInternalScopeFactory.php
 create mode 100644 src/Analyser/LocalIgnoresProcessor.php
 create mode 100644 src/Analyser/LocalIgnoresProcessorResult.php
 create mode 100644 src/Analyser/MutatingScope.php
 create mode 100644 src/Analyser/NameScope.php
 create mode 100644 src/Analyser/NodeScopeResolver.php
 create mode 100644 src/Analyser/NullsafeOperatorHelper.php
 create mode 100644 src/Analyser/OutOfClassScope.php
 create mode 100644 src/Analyser/ProcessClosureResult.php
 create mode 100644 src/Analyser/ResultCache/ResultCache.php
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 create mode 100644 src/Type/ValueOfType.php
 create mode 100644 src/Type/VerbosityLevel.php
 create mode 100644 src/Type/VoidType.php
 create mode 100644 src/autoloadFunctions.php
 create mode 100644 src/debugScope.php
 create mode 100644 src/dumpType.php

diff --git a/composer.json b/composer.json
index 2e6e9801..6eb35ba7 100644
--- a/composer.json
+++ b/composer.json
@@ -1,5 +1,15 @@
 {
-  "name": "headercat/phpstan-extension-ide-helper",
-  "description": "PHPStan extension IDE helper, provides dummy PHPStan namespace classes and functions.",
-  "license": "MIT"
-}
+    "name": "headercat/phpstan-extension-ide-helper",
+    "description": "PHPStan extension IDE helper, provides dummy PHPStan namespace classes and functions.",
+    "license": "MIT",
+    "autoload-dev": {
+        "psr-4": {
+            "PHPStan\\": "src/"
+        }
+    },
+    "require": {
+        "phpstan/phpstan": "^1.12.16",
+        "phpstan/php-8-stubs": "0.4.11",
+        "phpstan/phpdoc-parser": "2.0.1"
+    }
+}
\ No newline at end of file
diff --git a/src/AnalysedCodeException.php b/src/AnalysedCodeException.php
new file mode 100644
index 00000000..fa2d0dee
--- /dev/null
+++ b/src/AnalysedCodeException.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+use Exception;
+
+abstract class AnalysedCodeException extends Exception
+{
+
+	abstract public function getTip(): ?string;
+
+}
diff --git a/src/Analyser/Analyser.php b/src/Analyser/Analyser.php
new file mode 100644
index 00000000..0c4e437a
--- /dev/null
+++ b/src/Analyser/Analyser.php
@@ -0,0 +1,137 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use Closure;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Collectors\Registry as CollectorRegistry;
+use PHPStan\Rules\Registry as RuleRegistry;
+use Throwable;
+use function array_fill_keys;
+use function array_merge;
+use function count;
+use function memory_get_peak_usage;
+
+final class Analyser
+{
+
+	public function __construct(
+		private FileAnalyser $fileAnalyser,
+		private RuleRegistry $ruleRegistry,
+		private CollectorRegistry $collectorRegistry,
+		private NodeScopeResolver $nodeScopeResolver,
+		private int $internalErrorsCountLimit,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param Closure(string $file): void|null $preFileCallback
+	 * @param Closure(int ): void|null $postFileCallback
+	 * @param string[]|null $allAnalysedFiles
+	 */
+	public function analyse(
+		array $files,
+		?Closure $preFileCallback = null,
+		?Closure $postFileCallback = null,
+		bool $debug = false,
+		?array $allAnalysedFiles = null,
+	): AnalyserResult
+	{
+		if ($allAnalysedFiles === null) {
+			$allAnalysedFiles = $files;
+		}
+
+		$this->nodeScopeResolver->setAnalysedFiles($allAnalysedFiles);
+		$allAnalysedFiles = array_fill_keys($allAnalysedFiles, true);
+
+		/** @var list<Error> $errors */
+		$errors = [];
+		/** @var list<Error> $filteredPhpErrors */
+		$filteredPhpErrors = [];
+		/** @var list<Error> $allPhpErrors */
+		$allPhpErrors = [];
+
+		/** @var list<Error> $locallyIgnoredErrors */
+		$locallyIgnoredErrors = [];
+
+		$linesToIgnore = [];
+		$unmatchedLineIgnores = [];
+
+		/** @var list<CollectedData> $collectedData */
+		$collectedData = [];
+
+		$internalErrorsCount = 0;
+		$reachedInternalErrorsCountLimit = false;
+		$dependencies = [];
+		$exportedNodes = [];
+		foreach ($files as $file) {
+			if ($preFileCallback !== null) {
+				$preFileCallback($file);
+			}
+
+			try {
+				$fileAnalyserResult = $this->fileAnalyser->analyseFile(
+					$file,
+					$allAnalysedFiles,
+					$this->ruleRegistry,
+					$this->collectorRegistry,
+					null,
+				);
+				$errors = array_merge($errors, $fileAnalyserResult->getErrors());
+				$filteredPhpErrors = array_merge($filteredPhpErrors, $fileAnalyserResult->getFilteredPhpErrors());
+				$allPhpErrors = array_merge($allPhpErrors, $fileAnalyserResult->getAllPhpErrors());
+
+				$locallyIgnoredErrors = array_merge($locallyIgnoredErrors, $fileAnalyserResult->getLocallyIgnoredErrors());
+				$linesToIgnore[$file] = $fileAnalyserResult->getLinesToIgnore();
+				$unmatchedLineIgnores[$file] = $fileAnalyserResult->getUnmatchedLineIgnores();
+				$collectedData = array_merge($collectedData, $fileAnalyserResult->getCollectedData());
+				$dependencies[$file] = $fileAnalyserResult->getDependencies();
+
+				$fileExportedNodes = $fileAnalyserResult->getExportedNodes();
+				if (count($fileExportedNodes) > 0) {
+					$exportedNodes[$file] = $fileExportedNodes;
+				}
+			} catch (Throwable $t) {
+				if ($debug) {
+					throw $t;
+				}
+				$internalErrorsCount++;
+				$errors[] = (new Error($t->getMessage(), $file, null, $t))
+					->withIdentifier('phpstan.internal')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($t),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $t->getTraceAsString(),
+					]);
+				if ($internalErrorsCount >= $this->internalErrorsCountLimit) {
+					$reachedInternalErrorsCountLimit = true;
+					break;
+				}
+			}
+
+			if ($postFileCallback === null) {
+				continue;
+			}
+
+			$postFileCallback(1);
+		}
+
+		return new AnalyserResult(
+			$errors,
+			$filteredPhpErrors,
+			$allPhpErrors,
+			$locallyIgnoredErrors,
+			$linesToIgnore,
+			$unmatchedLineIgnores,
+			[],
+			$collectedData,
+			$internalErrorsCount === 0 ? $dependencies : null,
+			$exportedNodes,
+			$reachedInternalErrorsCountLimit,
+			memory_get_peak_usage(true),
+		);
+	}
+
+}
diff --git a/src/Analyser/AnalyserResult.php b/src/Analyser/AnalyserResult.php
new file mode 100644
index 00000000..b5b00847
--- /dev/null
+++ b/src/Analyser/AnalyserResult.php
@@ -0,0 +1,162 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Dependency\RootExportedNode;
+use function usort;
+
+/**
+ * @phpstan-import-type LinesToIgnore from FileAnalyserResult
+ */
+final class AnalyserResult
+{
+
+	/** @var list<Error>|null */
+	private ?array $errors = null;
+
+	/**
+	 * @param list<Error> $unorderedErrors
+	 * @param list<Error> $filteredPhpErrors
+	 * @param list<Error> $allPhpErrors
+	 * @param list<Error> $locallyIgnoredErrors
+	 * @param array<string, LinesToIgnore> $linesToIgnore
+	 * @param array<string, LinesToIgnore> $unmatchedLineIgnores
+	 * @param list<CollectedData> $collectedData
+	 * @param list<InternalError> $internalErrors
+	 * @param array<string, array<string>>|null $dependencies
+	 * @param array<string, array<RootExportedNode>> $exportedNodes
+	 */
+	public function __construct(
+		private array $unorderedErrors,
+		private array $filteredPhpErrors,
+		private array $allPhpErrors,
+		private array $locallyIgnoredErrors,
+		private array $linesToIgnore,
+		private array $unmatchedLineIgnores,
+		private array $internalErrors,
+		private array $collectedData,
+		private ?array $dependencies,
+		private array $exportedNodes,
+		private bool $reachedInternalErrorsCountLimit,
+		private int $peakMemoryUsageBytes,
+	)
+	{
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getUnorderedErrors(): array
+	{
+		return $this->unorderedErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getErrors(): array
+	{
+		if (!isset($this->errors)) {
+			$this->errors = $this->unorderedErrors;
+			usort(
+				$this->errors,
+				static fn (Error $a, Error $b): int => [
+					$a->getFile(),
+					$a->getLine(),
+					$a->getMessage(),
+				] <=> [
+					$b->getFile(),
+					$b->getLine(),
+					$b->getMessage(),
+				],
+			);
+		}
+
+		return $this->errors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getFilteredPhpErrors(): array
+	{
+		return $this->filteredPhpErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getAllPhpErrors(): array
+	{
+		return $this->allPhpErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getLocallyIgnoredErrors(): array
+	{
+		return $this->locallyIgnoredErrors;
+	}
+
+	/**
+	 * @return array<string, LinesToIgnore>
+	 */
+	public function getLinesToIgnore(): array
+	{
+		return $this->linesToIgnore;
+	}
+
+	/**
+	 * @return array<string, LinesToIgnore>
+	 */
+	public function getUnmatchedLineIgnores(): array
+	{
+		return $this->unmatchedLineIgnores;
+	}
+
+	/**
+	 * @return list<InternalError>
+	 */
+	public function getInternalErrors(): array
+	{
+		return $this->internalErrors;
+	}
+
+	/**
+	 * @return list<CollectedData>
+	 */
+	public function getCollectedData(): array
+	{
+		return $this->collectedData;
+	}
+
+	/**
+	 * @return array<string, array<string>>|null
+	 */
+	public function getDependencies(): ?array
+	{
+		return $this->dependencies;
+	}
+
+	/**
+	 * @return array<string, array<RootExportedNode>>
+	 */
+	public function getExportedNodes(): array
+	{
+		return $this->exportedNodes;
+	}
+
+	public function hasReachedInternalErrorsCountLimit(): bool
+	{
+		return $this->reachedInternalErrorsCountLimit;
+	}
+
+	public function getPeakMemoryUsageBytes(): int
+	{
+		return $this->peakMemoryUsageBytes;
+	}
+
+}
diff --git a/src/Analyser/AnalyserResultFinalizer.php b/src/Analyser/AnalyserResultFinalizer.php
new file mode 100644
index 00000000..16191cc1
--- /dev/null
+++ b/src/Analyser/AnalyserResultFinalizer.php
@@ -0,0 +1,223 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\AnalysedCodeException;
+use PHPStan\BetterReflection\NodeCompiler\Exception\UnableToCompileNode;
+use PHPStan\BetterReflection\Reflection\Exception\CircularReference;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Registry as RuleRegistry;
+use Throwable;
+use function array_merge;
+use function count;
+use function get_class;
+use function sprintf;
+
+final class AnalyserResultFinalizer
+{
+
+	public function __construct(
+		private RuleRegistry $ruleRegistry,
+		private RuleErrorTransformer $ruleErrorTransformer,
+		private ScopeFactory $scopeFactory,
+		private LocalIgnoresProcessor $localIgnoresProcessor,
+		private bool $reportUnmatchedIgnoredErrors,
+	)
+	{
+	}
+
+	public function finalize(AnalyserResult $analyserResult, bool $onlyFiles, bool $debug): FinalizerResult
+	{
+		if (count($analyserResult->getCollectedData()) === 0) {
+			return $this->addUnmatchedIgnoredErrors($this->mergeFilteredPhpErrors($analyserResult), [], []);
+		}
+
+		$hasInternalErrors = count($analyserResult->getInternalErrors()) > 0 || $analyserResult->hasReachedInternalErrorsCountLimit();
+		if ($hasInternalErrors) {
+			return $this->addUnmatchedIgnoredErrors($this->mergeFilteredPhpErrors($analyserResult), [], []);
+		}
+
+		$nodeType = CollectedDataNode::class;
+		$node = new CollectedDataNode($analyserResult->getCollectedData(), $onlyFiles);
+
+		$file = 'N/A';
+		$scope = $this->scopeFactory->create(ScopeContext::create($file));
+		$tempCollectorErrors = [];
+		$internalErrors = $analyserResult->getInternalErrors();
+		foreach ($this->ruleRegistry->getRules($nodeType) as $rule) {
+			try {
+				$ruleErrors = $rule->processNode($node, $scope);
+			} catch (AnalysedCodeException $e) {
+				$tempCollectorErrors[] = (new Error($e->getMessage(), $file, $node->getStartLine(), $e, null, null, $e->getTip()))
+					->withIdentifier('phpstan.internal')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+				continue;
+			} catch (IdentifierNotFound $e) {
+				$tempCollectorErrors[] = (new Error(sprintf('Reflection error: %s not found.', $e->getIdentifier()->getName()), $file, $node->getStartLine(), $e, null, null, 'Learn more at https://phpstan.org/user-guide/discovering-symbols'))
+					->withIdentifier('phpstan.reflection')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+				continue;
+			} catch (UnableToCompileNode | CircularReference $e) {
+				$tempCollectorErrors[] = (new Error(sprintf('Reflection error: %s', $e->getMessage()), $file, $node->getStartLine(), $e))
+					->withIdentifier('phpstan.reflection')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+				continue;
+			} catch (Throwable $t) {
+				if ($debug) {
+					throw $t;
+				}
+
+				$internalErrors[] = new InternalError(
+					$t->getMessage(),
+					sprintf('running CollectedDataNode rule %s', get_class($rule)),
+					InternalError::prepareTrace($t),
+					$t->getTraceAsString(),
+					true,
+				);
+				continue;
+			}
+
+			foreach ($ruleErrors as $ruleError) {
+				$tempCollectorErrors[] = $this->ruleErrorTransformer->transform($ruleError, $scope, $nodeType, $node->getStartLine());
+			}
+		}
+
+		$errors = $analyserResult->getUnorderedErrors();
+		$locallyIgnoredErrors = $analyserResult->getLocallyIgnoredErrors();
+		$allLinesToIgnore = $analyserResult->getLinesToIgnore();
+		$allUnmatchedLineIgnores = $analyserResult->getUnmatchedLineIgnores();
+		$collectorErrors = [];
+		$locallyIgnoredCollectorErrors = [];
+		foreach ($tempCollectorErrors as $tempCollectorError) {
+			$file = $tempCollectorError->getFilePath();
+			$linesToIgnore = $allLinesToIgnore[$file] ?? [];
+			$unmatchedLineIgnores = $allUnmatchedLineIgnores[$file] ?? [];
+			$localIgnoresProcessorResult = $this->localIgnoresProcessor->process(
+				[$tempCollectorError],
+				$linesToIgnore,
+				$unmatchedLineIgnores,
+			);
+			foreach ($localIgnoresProcessorResult->getFileErrors() as $error) {
+				$errors[] = $error;
+				$collectorErrors[] = $error;
+			}
+			foreach ($localIgnoresProcessorResult->getLocallyIgnoredErrors() as $locallyIgnoredError) {
+				$locallyIgnoredErrors[] = $locallyIgnoredError;
+				$locallyIgnoredCollectorErrors[] = $locallyIgnoredError;
+			}
+			$allLinesToIgnore[$file] = $localIgnoresProcessorResult->getLinesToIgnore();
+			$allUnmatchedLineIgnores[$file] = $localIgnoresProcessorResult->getUnmatchedLineIgnores();
+		}
+
+		return $this->addUnmatchedIgnoredErrors(new AnalyserResult(
+			array_merge($errors, $analyserResult->getFilteredPhpErrors()),
+			[],
+			$analyserResult->getAllPhpErrors(),
+			$locallyIgnoredErrors,
+			$allLinesToIgnore,
+			$allUnmatchedLineIgnores,
+			$internalErrors,
+			$analyserResult->getCollectedData(),
+			$analyserResult->getDependencies(),
+			$analyserResult->getExportedNodes(),
+			$analyserResult->hasReachedInternalErrorsCountLimit(),
+			$analyserResult->getPeakMemoryUsageBytes(),
+		), $collectorErrors, $locallyIgnoredCollectorErrors);
+	}
+
+	private function mergeFilteredPhpErrors(AnalyserResult $analyserResult): AnalyserResult
+	{
+		return new AnalyserResult(
+			array_merge($analyserResult->getUnorderedErrors(), $analyserResult->getFilteredPhpErrors()),
+			[],
+			$analyserResult->getAllPhpErrors(),
+			$analyserResult->getLocallyIgnoredErrors(),
+			$analyserResult->getLinesToIgnore(),
+			$analyserResult->getUnmatchedLineIgnores(),
+			$analyserResult->getInternalErrors(),
+			$analyserResult->getCollectedData(),
+			$analyserResult->getDependencies(),
+			$analyserResult->getExportedNodes(),
+			$analyserResult->hasReachedInternalErrorsCountLimit(),
+			$analyserResult->getPeakMemoryUsageBytes(),
+		);
+	}
+
+	/**
+	 * @param list<Error> $collectorErrors
+	 * @param list<Error> $locallyIgnoredCollectorErrors
+	 */
+	private function addUnmatchedIgnoredErrors(
+		AnalyserResult $analyserResult,
+		array $collectorErrors,
+		array $locallyIgnoredCollectorErrors,
+	): FinalizerResult
+	{
+		if (!$this->reportUnmatchedIgnoredErrors) {
+			return new FinalizerResult($analyserResult, $collectorErrors, $locallyIgnoredCollectorErrors);
+		}
+
+		$errors = $analyserResult->getUnorderedErrors();
+		foreach ($analyserResult->getUnmatchedLineIgnores() as $file => $data) {
+			foreach ($data as $ignoredFile => $lines) {
+				if ($ignoredFile !== $file) {
+					continue;
+				}
+
+				foreach ($lines as $line => $identifiers) {
+					if ($identifiers === null) {
+						$errors[] = (new Error(
+							sprintf('No error to ignore is reported on line %d.', $line),
+							$file,
+							$line,
+							false,
+							$file,
+						))->withIdentifier('ignore.unmatchedLine');
+						continue;
+					}
+
+					foreach ($identifiers as $identifier) {
+						$errors[] = (new Error(
+							sprintf('No error with identifier %s is reported on line %d.', $identifier, $line),
+							$file,
+							$line,
+							false,
+							$file,
+						))->withIdentifier('ignore.unmatchedIdentifier');
+					}
+				}
+			}
+		}
+
+		return new FinalizerResult(
+			new AnalyserResult(
+				$errors,
+				$analyserResult->getFilteredPhpErrors(),
+				$analyserResult->getAllPhpErrors(),
+				$analyserResult->getLocallyIgnoredErrors(),
+				$analyserResult->getLinesToIgnore(),
+				$analyserResult->getUnmatchedLineIgnores(),
+				$analyserResult->getInternalErrors(),
+				$analyserResult->getCollectedData(),
+				$analyserResult->getDependencies(),
+				$analyserResult->getExportedNodes(),
+				$analyserResult->hasReachedInternalErrorsCountLimit(),
+				$analyserResult->getPeakMemoryUsageBytes(),
+			),
+			$collectorErrors,
+			$locallyIgnoredCollectorErrors,
+		);
+	}
+
+}
diff --git a/src/Analyser/ArgumentsNormalizer.php b/src/Analyser/ArgumentsNormalizer.php
new file mode 100644
index 00000000..61a589d6
--- /dev/null
+++ b/src/Analyser/ArgumentsNormalizer.php
@@ -0,0 +1,299 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use function array_key_exists;
+use function array_keys;
+use function count;
+use function ksort;
+use function max;
+
+/**
+ * @api
+ */
+final class ArgumentsNormalizer
+{
+
+	public const ORIGINAL_ARG_ATTRIBUTE = 'originalArg';
+
+	/**
+	 * @return array{ParametersAcceptor, FuncCall, TrinaryLogic}|null
+	 */
+	public static function reorderCallUserFuncArguments(
+		FuncCall $callUserFuncCall,
+		Scope $scope,
+	): ?array
+	{
+		$args = $callUserFuncCall->getArgs();
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$passThruArgs = [];
+		$callbackArg = null;
+		foreach ($args as $i => $arg) {
+			if ($callbackArg === null) {
+				if ($arg->name === null && $i === 0) {
+					$callbackArg = $arg;
+					continue;
+				}
+				if ($arg->name !== null && $arg->name->toString() === 'callback') {
+					$callbackArg = $arg;
+					continue;
+				}
+			}
+
+			$passThruArgs[] = $arg;
+		}
+
+		if ($callbackArg === null) {
+			return null;
+		}
+
+		$calledOnType = $scope->getType($callbackArg->value);
+		if (!$calledOnType->isCallable()->yes()) {
+			return null;
+		}
+
+		$callableParametersAcceptors = $calledOnType->getCallableParametersAcceptors($scope);
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$passThruArgs,
+			$callableParametersAcceptors,
+			null,
+		);
+
+		$acceptsNamedArguments = TrinaryLogic::createYes();
+		foreach ($callableParametersAcceptors as $callableParametersAcceptor) {
+			$acceptsNamedArguments = $acceptsNamedArguments->and($callableParametersAcceptor->acceptsNamedArguments());
+		}
+
+		return [$parametersAcceptor, new FuncCall(
+			$callbackArg->value,
+			$passThruArgs,
+			$callUserFuncCall->getAttributes(),
+		), $acceptsNamedArguments];
+	}
+
+	public static function reorderFuncArguments(
+		ParametersAcceptor $parametersAcceptor,
+		FuncCall $functionCall,
+	): ?FuncCall
+	{
+		$reorderedArgs = self::reorderArgs($parametersAcceptor, $functionCall->getArgs());
+
+		if ($reorderedArgs === null) {
+			return null;
+		}
+
+		return new FuncCall(
+			$functionCall->name,
+			$reorderedArgs,
+			$functionCall->getAttributes(),
+		);
+	}
+
+	public static function reorderMethodArguments(
+		ParametersAcceptor $parametersAcceptor,
+		MethodCall $methodCall,
+	): ?MethodCall
+	{
+		$reorderedArgs = self::reorderArgs($parametersAcceptor, $methodCall->getArgs());
+
+		if ($reorderedArgs === null) {
+			return null;
+		}
+
+		return new MethodCall(
+			$methodCall->var,
+			$methodCall->name,
+			$reorderedArgs,
+			$methodCall->getAttributes(),
+		);
+	}
+
+	public static function reorderStaticCallArguments(
+		ParametersAcceptor $parametersAcceptor,
+		StaticCall $staticCall,
+	): ?StaticCall
+	{
+		$reorderedArgs = self::reorderArgs($parametersAcceptor, $staticCall->getArgs());
+
+		if ($reorderedArgs === null) {
+			return null;
+		}
+
+		return new StaticCall(
+			$staticCall->class,
+			$staticCall->name,
+			$reorderedArgs,
+			$staticCall->getAttributes(),
+		);
+	}
+
+	public static function reorderNewArguments(
+		ParametersAcceptor $parametersAcceptor,
+		New_ $new,
+	): ?New_
+	{
+		$reorderedArgs = self::reorderArgs($parametersAcceptor, $new->getArgs());
+
+		if ($reorderedArgs === null) {
+			return null;
+		}
+
+		return new New_(
+			$new->class,
+			$reorderedArgs,
+			$new->getAttributes(),
+		);
+	}
+
+	/**
+	 * @param Arg[] $callArgs
+	 * @return ?array<int, Arg>
+	 */
+	public static function reorderArgs(ParametersAcceptor $parametersAcceptor, array $callArgs): ?array
+	{
+		if (count($callArgs) === 0) {
+			return [];
+		}
+
+		$signatureParameters = $parametersAcceptor->getParameters();
+
+		$hasNamedArgs = false;
+		foreach ($callArgs as $arg) {
+			if ($arg->name !== null) {
+				$hasNamedArgs = true;
+				break;
+			}
+		}
+		if (!$hasNamedArgs) {
+			return $callArgs;
+		}
+
+		$hasVariadic = false;
+		$argumentPositions = [];
+		foreach ($signatureParameters as $i => $parameter) {
+			if ($hasVariadic) {
+				// variadic parameter must be last
+				return null;
+			}
+
+			$hasVariadic = $parameter->isVariadic();
+			$argumentPositions[$parameter->getName()] = $i;
+		}
+
+		$reorderedArgs = [];
+		$additionalNamedArgs = [];
+		$appendArgs = [];
+		foreach ($callArgs as $i => $arg) {
+			if ($arg->name === null) {
+				// add regular args as is
+				$reorderedArgs[$i] = $arg;
+			} elseif (array_key_exists($arg->name->toString(), $argumentPositions)) {
+				$argName = $arg->name->toString();
+				// order named args into the position the signature expects them
+				$attributes = $arg->getAttributes();
+				$attributes[self::ORIGINAL_ARG_ATTRIBUTE] = $arg;
+				$reorderedArgs[$argumentPositions[$argName]] = new Arg(
+					$arg->value,
+					$arg->byRef,
+					$arg->unpack,
+					$attributes,
+					null,
+				);
+			} else {
+				if (!$hasVariadic) {
+					$attributes = $arg->getAttributes();
+					$attributes[self::ORIGINAL_ARG_ATTRIBUTE] = $arg;
+					$appendArgs[] = new Arg(
+						$arg->value,
+						$arg->byRef,
+						$arg->unpack,
+						$attributes,
+						null,
+					);
+					continue;
+				}
+
+				$attributes = $arg->getAttributes();
+				$attributes[self::ORIGINAL_ARG_ATTRIBUTE] = $arg;
+				$additionalNamedArgs[] = new Arg(
+					$arg->value,
+					$arg->byRef,
+					$arg->unpack,
+					$attributes,
+					null,
+				);
+			}
+		}
+
+		// replace variadic parameter with additional named args, except if it is already set
+		$additionalNamedArgsOffset = count($argumentPositions) - 1;
+		if (array_key_exists($additionalNamedArgsOffset, $reorderedArgs)) {
+			$additionalNamedArgsOffset++;
+		}
+
+		foreach ($additionalNamedArgs as $i => $additionalNamedArg) {
+			$reorderedArgs[$additionalNamedArgsOffset + $i] = $additionalNamedArg;
+		}
+
+		if (count($reorderedArgs) === 0) {
+			foreach ($appendArgs as $arg) {
+				$reorderedArgs[] = $arg;
+			}
+			return $reorderedArgs;
+		}
+
+		// fill up all holes with default values until the last given argument
+		for ($j = 0; $j < max(array_keys($reorderedArgs)); $j++) {
+			if (array_key_exists($j, $reorderedArgs)) {
+				continue;
+			}
+			if (!array_key_exists($j, $signatureParameters)) {
+				throw new ShouldNotHappenException('Parameter signatures cannot have holes');
+			}
+
+			$parameter = $signatureParameters[$j];
+
+			// we can only fill up optional parameters with default values
+			if (!$parameter->isOptional()) {
+				return null;
+			}
+
+			$defaultValue = $parameter->getDefaultValue();
+			if ($defaultValue === null) {
+				if (!$parameter->isVariadic()) {
+					throw new ShouldNotHappenException('An optional parameter must have a default value');
+				}
+				$defaultValue = new ConstantArrayType([], []);
+			}
+
+			$reorderedArgs[$j] = new Arg(
+				new TypeExpr($defaultValue),
+			);
+		}
+
+		ksort($reorderedArgs);
+
+		foreach ($appendArgs as $arg) {
+			$reorderedArgs[] = $arg;
+		}
+
+		return $reorderedArgs;
+	}
+
+}
diff --git a/src/Analyser/ConditionalExpressionHolder.php b/src/Analyser/ConditionalExpressionHolder.php
new file mode 100644
index 00000000..909cb1a9
--- /dev/null
+++ b/src/Analyser/ConditionalExpressionHolder.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function implode;
+use function sprintf;
+
+final class ConditionalExpressionHolder
+{
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $conditionExpressionTypeHolders
+	 */
+	public function __construct(
+		private array $conditionExpressionTypeHolders,
+		private ExpressionTypeHolder $typeHolder,
+	)
+	{
+		if (count($conditionExpressionTypeHolders) === 0) {
+			throw new ShouldNotHappenException();
+		}
+	}
+
+	/**
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	public function getConditionExpressionTypeHolders(): array
+	{
+		return $this->conditionExpressionTypeHolders;
+	}
+
+	public function getTypeHolder(): ExpressionTypeHolder
+	{
+		return $this->typeHolder;
+	}
+
+	public function getKey(): string
+	{
+		$parts = [];
+		foreach ($this->conditionExpressionTypeHolders as $exprString => $typeHolder) {
+			$parts[] = $exprString . '=' . $typeHolder->getType()->describe(VerbosityLevel::precise());
+		}
+
+		return sprintf(
+			'%s => %s (%s)',
+			implode(' && ', $parts),
+			$this->typeHolder->getType()->describe(VerbosityLevel::precise()),
+			$this->typeHolder->getCertainty()->describe(),
+		);
+	}
+
+}
diff --git a/src/Analyser/ConstantResolver.php b/src/Analyser/ConstantResolver.php
new file mode 100644
index 00000000..8f469081
--- /dev/null
+++ b/src/Analyser/ConstantResolver.php
@@ -0,0 +1,440 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Name;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function array_key_exists;
+use function in_array;
+use function is_array;
+use function is_int;
+use function max;
+use function sprintf;
+use const INF;
+use const NAN;
+use const PHP_INT_SIZE;
+
+final class ConstantResolver
+{
+
+	/** @var array<string, true> */
+	private array $currentlyResolving = [];
+
+	/**
+	 * @param string[] $dynamicConstantNames
+	 * @param int|array{min: int, max: int}|null $phpVersion
+	 */
+	public function __construct(
+		private ReflectionProviderProvider $reflectionProviderProvider,
+		private array $dynamicConstantNames,
+		private int|array|null $phpVersion,
+		private ComposerPhpVersionFactory $composerPhpVersionFactory,
+	)
+	{
+	}
+
+	public function resolveConstant(Name $name, ?NamespaceAnswerer $scope): ?Type
+	{
+		if (!$this->getReflectionProvider()->hasConstant($name, $scope)) {
+			return null;
+		}
+
+		/** @var string $resolvedConstantName */
+		$resolvedConstantName = $this->getReflectionProvider()->resolveConstantName($name, $scope);
+
+		$constantType = $this->resolvePredefinedConstant($resolvedConstantName);
+		if ($constantType !== null) {
+			return $constantType;
+		}
+
+		if (array_key_exists($resolvedConstantName, $this->currentlyResolving)) {
+			return new MixedType();
+		}
+
+		$this->currentlyResolving[$resolvedConstantName] = true;
+
+		$constantReflection = $this->getReflectionProvider()->getConstant($name, $scope);
+		$constantType = $constantReflection->getValueType();
+
+		$type = $this->resolveConstantType($resolvedConstantName, $constantType);
+		unset($this->currentlyResolving[$resolvedConstantName]);
+
+		return $type;
+	}
+
+	public function resolvePredefinedConstant(string $resolvedConstantName): ?Type
+	{
+		// core, https://www.php.net/manual/en/reserved.constants.php
+		if ($resolvedConstantName === 'PHP_VERSION') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+
+		$minPhpVersion = null;
+		$maxPhpVersion = null;
+		if (in_array($resolvedConstantName, ['PHP_VERSION_ID', 'PHP_MAJOR_VERSION', 'PHP_MINOR_VERSION', 'PHP_RELEASE_VERSION'], true)) {
+			$minPhpVersion = $this->getMinPhpVersion();
+			$maxPhpVersion = $this->getMaxPhpVersion();
+		}
+
+		if ($resolvedConstantName === 'PHP_MAJOR_VERSION') {
+			$minMajor = 5;
+			$maxMajor = null;
+
+			if ($minPhpVersion !== null) {
+				$minMajor = max($minMajor, $minPhpVersion->getMajorVersionId());
+			}
+			if ($maxPhpVersion !== null) {
+				$maxMajor = $maxPhpVersion->getMajorVersionId();
+			}
+
+			return $this->createInteger($minMajor, $maxMajor);
+		}
+		if ($resolvedConstantName === 'PHP_MINOR_VERSION') {
+			$minMinor = 0;
+			$maxMinor = null;
+
+			if (
+				$minPhpVersion !== null
+				&& $maxPhpVersion !== null
+				&& $maxPhpVersion->getMajorVersionId() === $minPhpVersion->getMajorVersionId()
+			) {
+				$minMinor = $minPhpVersion->getMinorVersionId();
+				$maxMinor = $maxPhpVersion->getMinorVersionId();
+			}
+
+			return $this->createInteger($minMinor, $maxMinor);
+		}
+		if ($resolvedConstantName === 'PHP_RELEASE_VERSION') {
+			$minRelease = 0;
+			$maxRelease = null;
+
+			if (
+				$minPhpVersion !== null
+				&& $maxPhpVersion !== null
+				&& $maxPhpVersion->getMajorVersionId() === $minPhpVersion->getMajorVersionId()
+				&& $maxPhpVersion->getMinorVersionId() === $minPhpVersion->getMinorVersionId()
+			) {
+				$minRelease = $minPhpVersion->getPatchVersionId();
+				$maxRelease = $maxPhpVersion->getPatchVersionId();
+			}
+
+			return $this->createInteger($minRelease, $maxRelease);
+		}
+		if ($resolvedConstantName === 'PHP_VERSION_ID') {
+			$minVersion = 50207;
+			$maxVersion = null;
+			if ($minPhpVersion !== null) {
+				$minVersion = max($minVersion, $minPhpVersion->getVersionId());
+			}
+			if ($maxPhpVersion !== null) {
+				$maxVersion = $maxPhpVersion->getVersionId();
+			}
+
+			return $this->createInteger($minVersion, $maxVersion);
+		}
+		if ($resolvedConstantName === 'PHP_ZTS') {
+			return new UnionType([
+				new ConstantIntegerType(0),
+				new ConstantIntegerType(1),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_DEBUG') {
+			return new UnionType([
+				new ConstantIntegerType(0),
+				new ConstantIntegerType(1),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_MAXPATHLEN') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		if ($resolvedConstantName === 'PHP_OS') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_OS_FAMILY') {
+			return new UnionType([
+				new ConstantStringType('Windows'),
+				new ConstantStringType('BSD'),
+				new ConstantStringType('Darwin'),
+				new ConstantStringType('Solaris'),
+				new ConstantStringType('Linux'),
+				new ConstantStringType('Unknown'),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_SAPI') {
+			return new UnionType([
+				new ConstantStringType('apache'),
+				new ConstantStringType('apache2handler'),
+				new ConstantStringType('cgi'),
+				new ConstantStringType('cli'),
+				new ConstantStringType('cli-server'),
+				new ConstantStringType('embed'),
+				new ConstantStringType('fpm-fcgi'),
+				new ConstantStringType('litespeed'),
+				new ConstantStringType('phpdbg'),
+				new IntersectionType([
+					new StringType(),
+					new AccessoryNonFalsyStringType(),
+				]),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_EOL') {
+			return new UnionType([
+				new ConstantStringType("\n"),
+				new ConstantStringType("\r\n"),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_INT_MAX') {
+			return PHP_INT_SIZE === 8
+				? new UnionType([new ConstantIntegerType(2147483647), new ConstantIntegerType(9223372036854775807)])
+				: new ConstantIntegerType(2147483647);
+		}
+		if ($resolvedConstantName === 'PHP_INT_MIN') {
+			// Why the -1 you might wonder, the answer is to fit it into an int :/ see https://3v4l.org/4SHIQ
+			return PHP_INT_SIZE === 8
+				? new UnionType([new ConstantIntegerType(-9223372036854775807 - 1), new ConstantIntegerType(-2147483647 - 1)])
+				: new ConstantIntegerType(-2147483647 - 1);
+		}
+		if ($resolvedConstantName === 'PHP_INT_SIZE') {
+			return new UnionType([
+				new ConstantIntegerType(4),
+				new ConstantIntegerType(8),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_FLOAT_DIG') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		if ($resolvedConstantName === 'PHP_EXTENSION_DIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_PREFIX') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_BINDIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_BINARY') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_MANDIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_LIBDIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_DATADIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_SYSCONFDIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_LOCALSTATEDIR') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_CONFIG_FILE_PATH') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_SHLIB_SUFFIX') {
+			return new UnionType([
+				new ConstantStringType('so'),
+				new ConstantStringType('dll'),
+			]);
+		}
+		if ($resolvedConstantName === 'PHP_FD_SETSIZE') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		if ($resolvedConstantName === '__COMPILER_HALT_OFFSET__') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		// core other, https://www.php.net/manual/en/info.constants.php
+		if ($resolvedConstantName === 'PHP_WINDOWS_VERSION_MAJOR') {
+			return IntegerRangeType::fromInterval(4, null);
+		}
+		if ($resolvedConstantName === 'PHP_WINDOWS_VERSION_MINOR') {
+			return IntegerRangeType::fromInterval(0, null);
+		}
+		if ($resolvedConstantName === 'PHP_WINDOWS_VERSION_BUILD') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		// dir, https://www.php.net/manual/en/dir.constants.php
+		if ($resolvedConstantName === 'DIRECTORY_SEPARATOR') {
+			return new UnionType([
+				new ConstantStringType('/'),
+				new ConstantStringType('\\'),
+			]);
+		}
+		if ($resolvedConstantName === 'PATH_SEPARATOR') {
+			return new UnionType([
+				new ConstantStringType(':'),
+				new ConstantStringType(';'),
+			]);
+		}
+		// iconv, https://www.php.net/manual/en/iconv.constants.php
+		if ($resolvedConstantName === 'ICONV_IMPL') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		// libxml, https://www.php.net/manual/en/libxml.constants.php
+		if ($resolvedConstantName === 'LIBXML_VERSION') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+		if ($resolvedConstantName === 'LIBXML_DOTTED_VERSION') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		// openssl, https://www.php.net/manual/en/openssl.constants.php
+		if ($resolvedConstantName === 'OPENSSL_VERSION_NUMBER') {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+
+		// pcre, https://www.php.net/manual/en/pcre.constants.php
+		if ($resolvedConstantName === 'PCRE_VERSION') {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+
+		if (in_array($resolvedConstantName, ['STDIN', 'STDOUT', 'STDERR'], true)) {
+			return new ResourceType();
+		}
+		if ($resolvedConstantName === 'NAN') {
+			return new ConstantFloatType(NAN);
+		}
+		if ($resolvedConstantName === 'INF') {
+			return new ConstantFloatType(INF);
+		}
+
+		return null;
+	}
+
+	private function getMinPhpVersion(): ?PhpVersion
+	{
+		if (is_int($this->phpVersion)) {
+			return null;
+		}
+
+		if (is_array($this->phpVersion)) {
+			if ($this->phpVersion['max'] < $this->phpVersion['min']) {
+				throw new ShouldNotHappenException('Invalid PHP version range: phpVersion.max should be greater or equal to phpVersion.min.');
+			}
+
+			return new PhpVersion($this->phpVersion['min']);
+		}
+
+		return $this->composerPhpVersionFactory->getMinVersion();
+	}
+
+	private function getMaxPhpVersion(): ?PhpVersion
+	{
+		if (is_int($this->phpVersion)) {
+			return null;
+		}
+
+		if (is_array($this->phpVersion)) {
+			if ($this->phpVersion['max'] < $this->phpVersion['min']) {
+				throw new ShouldNotHappenException('Invalid PHP version range: phpVersion.max should be greater or equal to phpVersion.min.');
+			}
+
+			return new PhpVersion($this->phpVersion['max']);
+		}
+
+		return $this->composerPhpVersionFactory->getMaxVersion();
+	}
+
+	public function resolveConstantType(string $constantName, Type $constantType): Type
+	{
+		if ($constantType->isConstantValue()->yes() && in_array($constantName, $this->dynamicConstantNames, true)) {
+			return $constantType->generalize(GeneralizePrecision::lessSpecific());
+		}
+
+		return $constantType;
+	}
+
+	public function resolveClassConstantType(string $className, string $constantName, Type $constantType, ?Type $nativeType): Type
+	{
+		$lookupConstantName = sprintf('%s::%s', $className, $constantName);
+		if (in_array($lookupConstantName, $this->dynamicConstantNames, true)) {
+			if ($nativeType !== null) {
+				return $nativeType;
+			}
+
+			if ($constantType->isConstantValue()->yes()) {
+				return $constantType->generalize(GeneralizePrecision::lessSpecific());
+			}
+		}
+
+		return $constantType;
+	}
+
+	private function createInteger(?int $min, ?int $max): Type
+	{
+		if ($min !== null && $min === $max) {
+			return new ConstantIntegerType($min);
+		}
+		return IntegerRangeType::fromInterval($min, $max);
+	}
+
+	private function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProviderProvider->getReflectionProvider();
+	}
+
+}
diff --git a/src/Analyser/ConstantResolverFactory.php b/src/Analyser/ConstantResolverFactory.php
new file mode 100644
index 00000000..85e6248c
--- /dev/null
+++ b/src/Analyser/ConstantResolverFactory.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+
+final class ConstantResolverFactory
+{
+
+	public function __construct(
+		private ReflectionProviderProvider $reflectionProviderProvider,
+		private Container $container,
+	)
+	{
+	}
+
+	public function create(): ConstantResolver
+	{
+		$composerFactory = $this->container->getByType(ComposerPhpVersionFactory::class);
+
+		return new ConstantResolver(
+			$this->reflectionProviderProvider,
+			$this->container->getParameter('dynamicConstantNames'),
+			$this->container->getParameter('phpVersion'),
+			$composerFactory,
+		);
+	}
+
+}
diff --git a/src/Analyser/DirectInternalScopeFactory.php b/src/Analyser/DirectInternalScopeFactory.php
new file mode 100644
index 00000000..2ccaf76a
--- /dev/null
+++ b/src/Analyser/DirectInternalScopeFactory.php
@@ -0,0 +1,97 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\DependencyInjection\Type\DynamicReturnTypeExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\ExpressionTypeResolverExtensionRegistryProvider;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Parser\Parser;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+
+final class DirectInternalScopeFactory implements InternalScopeFactory
+{
+
+	/**
+	 * @param int|array{min: int, max: int}|null $configPhpVersion
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private DynamicReturnTypeExtensionRegistryProvider $dynamicReturnTypeExtensionRegistryProvider,
+		private ExpressionTypeResolverExtensionRegistryProvider $expressionTypeResolverExtensionRegistryProvider,
+		private ExprPrinter $exprPrinter,
+		private TypeSpecifier $typeSpecifier,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private Parser $parser,
+		private NodeScopeResolver $nodeScopeResolver,
+		private RicherScopeGetTypeHelper $richerScopeGetTypeHelper,
+		private PhpVersion $phpVersion,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private int|array|null $configPhpVersion,
+		private ConstantResolver $constantResolver,
+	)
+	{
+	}
+
+	public function create(
+		ScopeContext $context,
+		bool $declareStrictTypes = false,
+		PhpFunctionFromParserNodeReflection|null $function = null,
+		?string $namespace = null,
+		array $expressionTypes = [],
+		array $nativeExpressionTypes = [],
+		array $conditionalExpressions = [],
+		array $inClosureBindScopeClasses = [],
+		?ParametersAcceptor $anonymousFunctionReflection = null,
+		bool $inFirstLevelStatement = true,
+		array $currentlyAssignedExpressions = [],
+		array $currentlyAllowedUndefinedExpressions = [],
+		array $inFunctionCallsStack = [],
+		bool $afterExtractCall = false,
+		?Scope $parentScope = null,
+		bool $nativeTypesPromoted = false,
+	): MutatingScope
+	{
+		return new MutatingScope(
+			$this,
+			$this->reflectionProvider,
+			$this->initializerExprTypeResolver,
+			$this->dynamicReturnTypeExtensionRegistryProvider->getRegistry(),
+			$this->expressionTypeResolverExtensionRegistryProvider->getRegistry(),
+			$this->exprPrinter,
+			$this->typeSpecifier,
+			$this->propertyReflectionFinder,
+			$this->parser,
+			$this->nodeScopeResolver,
+			$this->richerScopeGetTypeHelper,
+			$this->constantResolver,
+			$context,
+			$this->phpVersion,
+			$this->attributeReflectionFactory,
+			$this->configPhpVersion,
+			$declareStrictTypes,
+			$function,
+			$namespace,
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$conditionalExpressions,
+			$inClosureBindScopeClasses,
+			$anonymousFunctionReflection,
+			$inFirstLevelStatement,
+			$currentlyAssignedExpressions,
+			$currentlyAllowedUndefinedExpressions,
+			$inFunctionCallsStack,
+			$afterExtractCall,
+			$parentScope,
+			$nativeTypesPromoted,
+		);
+	}
+
+}
diff --git a/src/Analyser/EndStatementResult.php b/src/Analyser/EndStatementResult.php
new file mode 100644
index 00000000..b9b88445
--- /dev/null
+++ b/src/Analyser/EndStatementResult.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Stmt;
+
+final class EndStatementResult
+{
+
+	public function __construct(
+		private Stmt $statement,
+		private StatementResult $result,
+	)
+	{
+	}
+
+	public function getStatement(): Stmt
+	{
+		return $this->statement;
+	}
+
+	public function getResult(): StatementResult
+	{
+		return $this->result;
+	}
+
+}
diff --git a/src/Analyser/EnsuredNonNullabilityResult.php b/src/Analyser/EnsuredNonNullabilityResult.php
new file mode 100644
index 00000000..cb5eca54
--- /dev/null
+++ b/src/Analyser/EnsuredNonNullabilityResult.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+final class EnsuredNonNullabilityResult
+{
+
+	/**
+	 * @param EnsuredNonNullabilityResultExpression[] $specifiedExpressions
+	 */
+	public function __construct(private MutatingScope $scope, private array $specifiedExpressions)
+	{
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+	/**
+	 * @return EnsuredNonNullabilityResultExpression[]
+	 */
+	public function getSpecifiedExpressions(): array
+	{
+		return $this->specifiedExpressions;
+	}
+
+}
diff --git a/src/Analyser/EnsuredNonNullabilityResultExpression.php b/src/Analyser/EnsuredNonNullabilityResultExpression.php
new file mode 100644
index 00000000..743df288
--- /dev/null
+++ b/src/Analyser/EnsuredNonNullabilityResultExpression.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+final class EnsuredNonNullabilityResultExpression
+{
+
+	public function __construct(
+		private Expr $expression,
+		private Type $originalType,
+		private Type $originalNativeType,
+		private TrinaryLogic $certainty,
+	)
+	{
+	}
+
+	public function getExpression(): Expr
+	{
+		return $this->expression;
+	}
+
+	public function getOriginalType(): Type
+	{
+		return $this->originalType;
+	}
+
+	public function getOriginalNativeType(): Type
+	{
+		return $this->originalNativeType;
+	}
+
+	public function getCertainty(): TrinaryLogic
+	{
+		return $this->certainty;
+	}
+
+}
diff --git a/src/Analyser/Error.php b/src/Analyser/Error.php
new file mode 100644
index 00000000..2b834b8f
--- /dev/null
+++ b/src/Analyser/Error.php
@@ -0,0 +1,311 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use Exception;
+use JsonSerializable;
+use Nette\Utils\Strings;
+use PhpParser\Node;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use Throwable;
+use function is_bool;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class Error implements JsonSerializable
+{
+
+	public const PATTERN_IDENTIFIER = '[a-zA-Z0-9](?:[a-zA-Z0-9\\.]*[a-zA-Z0-9])?';
+
+	/**
+	 * Error constructor.
+	 *
+	 * @param class-string<Node>|null $nodeType
+	 * @param mixed[] $metadata
+	 */
+	public function __construct(
+		private string $message,
+		private string $file,
+		private ?int $line = null,
+		private bool|Throwable $canBeIgnored = true,
+		private ?string $filePath = null,
+		private ?string $traitFilePath = null,
+		private ?string $tip = null,
+		private ?int $nodeLine = null,
+		private ?string $nodeType = null,
+		private ?string $identifier = null,
+		private array $metadata = [],
+	)
+	{
+		if ($this->identifier !== null && !self::validateIdentifier($this->identifier)) {
+			throw new ShouldNotHappenException(sprintf('Invalid identifier: %s', $this->identifier));
+		}
+	}
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFilePath(): string
+	{
+		if ($this->filePath === null) {
+			return $this->file;
+		}
+
+		return $this->filePath;
+	}
+
+	public function changeFilePath(string $newFilePath): self
+	{
+		if ($this->traitFilePath !== null) {
+			throw new ShouldNotHappenException('Errors in traits not yet supported');
+		}
+
+		return new self(
+			$this->message,
+			$newFilePath,
+			$this->line,
+			$this->canBeIgnored,
+			$newFilePath,
+			null,
+			$this->tip,
+			$this->nodeLine,
+			$this->nodeType,
+			$this->identifier,
+			$this->metadata,
+		);
+	}
+
+	public function changeTraitFilePath(string $newFilePath): self
+	{
+		return new self(
+			$this->message,
+			$this->file,
+			$this->line,
+			$this->canBeIgnored,
+			$this->filePath,
+			$newFilePath,
+			$this->tip,
+			$this->nodeLine,
+			$this->nodeType,
+			$this->identifier,
+			$this->metadata,
+		);
+	}
+
+	public function getTraitFilePath(): ?string
+	{
+		return $this->traitFilePath;
+	}
+
+	public function getLine(): ?int
+	{
+		return $this->line;
+	}
+
+	public function canBeIgnored(): bool
+	{
+		return $this->canBeIgnored === true;
+	}
+
+	public function hasNonIgnorableException(): bool
+	{
+		return $this->canBeIgnored instanceof Throwable;
+	}
+
+	public function getTip(): ?string
+	{
+		return $this->tip;
+	}
+
+	public function withoutTip(): self
+	{
+		if ($this->tip === null) {
+			return $this;
+		}
+
+		return new self(
+			$this->message,
+			$this->file,
+			$this->line,
+			$this->canBeIgnored,
+			$this->filePath,
+			$this->traitFilePath,
+			null,
+			$this->nodeLine,
+			$this->nodeType,
+		);
+	}
+
+	public function doNotIgnore(): self
+	{
+		if (!$this->canBeIgnored()) {
+			return $this;
+		}
+
+		return new self(
+			$this->message,
+			$this->file,
+			$this->line,
+			false,
+			$this->filePath,
+			$this->traitFilePath,
+			$this->tip,
+			$this->nodeLine,
+			$this->nodeType,
+		);
+	}
+
+	public function withIdentifier(string $identifier): self
+	{
+		if ($this->identifier !== null) {
+			throw new ShouldNotHappenException(sprintf('Error already has an identifier: %s', $this->identifier));
+		}
+
+		return new self(
+			$this->message,
+			$this->file,
+			$this->line,
+			$this->canBeIgnored,
+			$this->filePath,
+			$this->traitFilePath,
+			$this->tip,
+			$this->nodeLine,
+			$this->nodeType,
+			$identifier,
+			$this->metadata,
+		);
+	}
+
+	/**
+	 * @param mixed[] $metadata
+	 */
+	public function withMetadata(array $metadata): self
+	{
+		if ($this->metadata !== []) {
+			throw new ShouldNotHappenException('Error already has metadata');
+		}
+
+		return new self(
+			$this->message,
+			$this->file,
+			$this->line,
+			$this->canBeIgnored,
+			$this->filePath,
+			$this->traitFilePath,
+			$this->tip,
+			$this->nodeLine,
+			$this->nodeType,
+			$this->identifier,
+			$metadata,
+		);
+	}
+
+	public function getNodeLine(): ?int
+	{
+		return $this->nodeLine;
+	}
+
+	/**
+	 * @return class-string<Node>|null
+	 */
+	public function getNodeType(): ?string
+	{
+		return $this->nodeType;
+	}
+
+	/**
+	 * Error identifier set via `RuleErrorBuilder::identifier()`.
+	 *
+	 * List of all current error identifiers in PHPStan: https://phpstan.org/error-identifiers
+	 */
+	public function getIdentifier(): ?string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'message' => $this->message,
+			'file' => $this->file,
+			'line' => $this->line,
+			'canBeIgnored' => is_bool($this->canBeIgnored) ? $this->canBeIgnored : 'exception',
+			'filePath' => $this->filePath,
+			'traitFilePath' => $this->traitFilePath,
+			'tip' => $this->tip,
+			'nodeLine' => $this->nodeLine,
+			'nodeType' => $this->nodeType,
+			'identifier' => $this->identifier,
+			'metadata' => $this->metadata,
+		];
+	}
+
+	/**
+	 * @param mixed[] $json
+	 */
+	public static function decode(array $json): self
+	{
+		return new self(
+			$json['message'],
+			$json['file'],
+			$json['line'],
+			$json['canBeIgnored'] === 'exception' ? new Exception() : $json['canBeIgnored'],
+			$json['filePath'],
+			$json['traitFilePath'],
+			$json['tip'],
+			$json['nodeLine'] ?? null,
+			$json['nodeType'] ?? null,
+			$json['identifier'] ?? null,
+			$json['metadata'] ?? [],
+		);
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['message'],
+			$properties['file'],
+			$properties['line'],
+			$properties['canBeIgnored'],
+			$properties['filePath'],
+			$properties['traitFilePath'],
+			$properties['tip'],
+			$properties['nodeLine'] ?? null,
+			$properties['nodeType'] ?? null,
+			$properties['identifier'] ?? null,
+			$properties['metadata'] ?? [],
+		);
+	}
+
+	public static function validateIdentifier(string $identifier): bool
+	{
+		return Strings::match($identifier, '~^' . self::PATTERN_IDENTIFIER . '$~') !== null;
+	}
+
+}
diff --git a/src/Analyser/ExpressionContext.php b/src/Analyser/ExpressionContext.php
new file mode 100644
index 00000000..53ea1604
--- /dev/null
+++ b/src/Analyser/ExpressionContext.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Type\Type;
+
+final class ExpressionContext
+{
+
+	private function __construct(
+		private bool $isDeep,
+		private ?string $inAssignRightSideVariableName,
+		private ?Type $inAssignRightSideType,
+		private ?Type $inAssignRightSideNativeType,
+	)
+	{
+	}
+
+	public static function createTopLevel(): self
+	{
+		return new self(false, null, null, null);
+	}
+
+	public static function createDeep(): self
+	{
+		return new self(true, null, null, null);
+	}
+
+	public function enterDeep(): self
+	{
+		if ($this->isDeep) {
+			return $this;
+		}
+
+		return new self(true, $this->inAssignRightSideVariableName, $this->inAssignRightSideType, $this->inAssignRightSideNativeType);
+	}
+
+	public function isDeep(): bool
+	{
+		return $this->isDeep;
+	}
+
+	public function enterRightSideAssign(string $variableName, Type $type, Type $nativeType): self
+	{
+		return new self($this->isDeep, $variableName, $type, $nativeType);
+	}
+
+	public function getInAssignRightSideVariableName(): ?string
+	{
+		return $this->inAssignRightSideVariableName;
+	}
+
+	public function getInAssignRightSideType(): ?Type
+	{
+		return $this->inAssignRightSideType;
+	}
+
+	public function getInAssignRightSideNativeType(): ?Type
+	{
+		return $this->inAssignRightSideNativeType;
+	}
+
+}
diff --git a/src/Analyser/ExpressionResult.php b/src/Analyser/ExpressionResult.php
new file mode 100644
index 00000000..a92b8e78
--- /dev/null
+++ b/src/Analyser/ExpressionResult.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+final class ExpressionResult
+{
+
+	/** @var (callable(): MutatingScope)|null */
+	private $truthyScopeCallback;
+
+	private ?MutatingScope $truthyScope = null;
+
+	/** @var (callable(): MutatingScope)|null */
+	private $falseyScopeCallback;
+
+	private ?MutatingScope $falseyScope = null;
+
+	/**
+	 * @param ThrowPoint[] $throwPoints
+	 * @param ImpurePoint[] $impurePoints
+	 * @param (callable(): MutatingScope)|null $truthyScopeCallback
+	 * @param (callable(): MutatingScope)|null $falseyScopeCallback
+	 */
+	public function __construct(
+		private MutatingScope $scope,
+		private bool $hasYield,
+		private array $throwPoints,
+		private array $impurePoints,
+		?callable $truthyScopeCallback = null,
+		?callable $falseyScopeCallback = null,
+	)
+	{
+		$this->truthyScopeCallback = $truthyScopeCallback;
+		$this->falseyScopeCallback = $falseyScopeCallback;
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+	public function hasYield(): bool
+	{
+		return $this->hasYield;
+	}
+
+	/**
+	 * @return ThrowPoint[]
+	 */
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	/**
+	 * @return ImpurePoint[]
+	 */
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getTruthyScope(): MutatingScope
+	{
+		if ($this->truthyScopeCallback === null) {
+			return $this->scope;
+		}
+
+		if ($this->truthyScope !== null) {
+			return $this->truthyScope;
+		}
+
+		$callback = $this->truthyScopeCallback;
+		$this->truthyScope = $callback();
+		return $this->truthyScope;
+	}
+
+	public function getFalseyScope(): MutatingScope
+	{
+		if ($this->falseyScopeCallback === null) {
+			return $this->scope;
+		}
+
+		if ($this->falseyScope !== null) {
+			return $this->falseyScope;
+		}
+
+		$callback = $this->falseyScopeCallback;
+		$this->falseyScope = $callback();
+		return $this->falseyScope;
+	}
+
+}
diff --git a/src/Analyser/ExpressionTypeHolder.php b/src/Analyser/ExpressionTypeHolder.php
new file mode 100644
index 00000000..3dbc6d8a
--- /dev/null
+++ b/src/Analyser/ExpressionTypeHolder.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ExpressionTypeHolder
+{
+
+	public function __construct(private Expr $expr, private Type $type, private TrinaryLogic $certainty)
+	{
+	}
+
+	public static function createYes(Expr $expr, Type $type): self
+	{
+		return new self($expr, $type, TrinaryLogic::createYes());
+	}
+
+	public static function createMaybe(Expr $expr, Type $type): self
+	{
+		return new self($expr, $type, TrinaryLogic::createMaybe());
+	}
+
+	public function equals(self $other): bool
+	{
+		if (!$this->certainty->equals($other->certainty)) {
+			return false;
+		}
+
+		return $this->type->equals($other->type);
+	}
+
+	public function and(self $other): self
+	{
+		if ($this->getType()->equals($other->getType())) {
+			$type = $this->getType();
+		} else {
+			$type = TypeCombinator::union($this->getType(), $other->getType());
+		}
+		return new self(
+			$this->expr,
+			$type,
+			$this->getCertainty()->and($other->getCertainty()),
+		);
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getCertainty(): TrinaryLogic
+	{
+		return $this->certainty;
+	}
+
+}
diff --git a/src/Analyser/FileAnalyser.php b/src/Analyser/FileAnalyser.php
new file mode 100644
index 00000000..80799c6d
--- /dev/null
+++ b/src/Analyser/FileAnalyser.php
@@ -0,0 +1,376 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PHPStan\AnalysedCodeException;
+use PHPStan\BetterReflection\NodeCompiler\Exception\UnableToCompileNode;
+use PHPStan\BetterReflection\Reflection\Exception\CircularReference;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Collectors\Registry as CollectorRegistry;
+use PHPStan\Dependency\DependencyResolver;
+use PHPStan\Node\FileNode;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Parser\Parser;
+use PHPStan\Parser\ParserErrorsException;
+use PHPStan\Rules\Registry as RuleRegistry;
+use function array_keys;
+use function array_unique;
+use function array_values;
+use function count;
+use function error_reporting;
+use function get_class;
+use function is_dir;
+use function is_file;
+use function restore_error_handler;
+use function set_error_handler;
+use function sprintf;
+use const E_DEPRECATED;
+use const E_ERROR;
+use const E_NOTICE;
+use const E_PARSE;
+use const E_STRICT;
+use const E_USER_DEPRECATED;
+use const E_USER_ERROR;
+use const E_USER_NOTICE;
+use const E_USER_WARNING;
+use const E_WARNING;
+
+final class FileAnalyser
+{
+
+	/** @var list<Error> */
+	private array $allPhpErrors = [];
+
+	/** @var list<Error> */
+	private array $filteredPhpErrors = [];
+
+	public function __construct(
+		private ScopeFactory $scopeFactory,
+		private NodeScopeResolver $nodeScopeResolver,
+		private Parser $parser,
+		private DependencyResolver $dependencyResolver,
+		private RuleErrorTransformer $ruleErrorTransformer,
+		private LocalIgnoresProcessor $localIgnoresProcessor,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string, true> $analysedFiles
+	 * @param callable(Node $node, Scope $scope): void|null $outerNodeCallback
+	 */
+	public function analyseFile(
+		string $file,
+		array $analysedFiles,
+		RuleRegistry $ruleRegistry,
+		CollectorRegistry $collectorRegistry,
+		?callable $outerNodeCallback,
+	): FileAnalyserResult
+	{
+		/** @var list<Error> $fileErrors */
+		$fileErrors = [];
+
+		/** @var list<Error> $locallyIgnoredErrors */
+		$locallyIgnoredErrors = [];
+
+		/** @var list<CollectedData> $fileCollectedData */
+		$fileCollectedData = [];
+
+		$fileDependencies = [];
+		$exportedNodes = [];
+		$linesToIgnore = [];
+		$unmatchedLineIgnores = [];
+		if (is_file($file)) {
+			try {
+				$this->collectErrors($analysedFiles);
+				$parserNodes = $this->parser->parseFile($file);
+				$linesToIgnore = $unmatchedLineIgnores = [$file => $this->getLinesToIgnoreFromTokens($parserNodes)];
+				$temporaryFileErrors = [];
+				$nodeCallback = function (Node $node, Scope $scope) use (&$fileErrors, &$fileCollectedData, &$fileDependencies, &$exportedNodes, $file, $ruleRegistry, $collectorRegistry, $outerNodeCallback, $analysedFiles, &$linesToIgnore, &$unmatchedLineIgnores, &$temporaryFileErrors): void {
+					if ($node instanceof Node\Stmt\Trait_) {
+						foreach (array_keys($linesToIgnore[$file] ?? []) as $lineToIgnore) {
+							if ($lineToIgnore < $node->getStartLine() || $lineToIgnore > $node->getEndLine()) {
+								continue;
+							}
+
+							unset($unmatchedLineIgnores[$file][$lineToIgnore]);
+						}
+					}
+					if ($node instanceof InTraitNode) {
+						$traitNode = $node->getOriginalNode();
+						$linesToIgnore[$scope->getFileDescription()] = $this->getLinesToIgnoreFromTokens([$traitNode]);
+					}
+					if ($outerNodeCallback !== null) {
+						$outerNodeCallback($node, $scope);
+					}
+					$uniquedAnalysedCodeExceptionMessages = [];
+					$nodeType = get_class($node);
+					foreach ($ruleRegistry->getRules($nodeType) as $rule) {
+						try {
+							$ruleErrors = $rule->processNode($node, $scope);
+						} catch (AnalysedCodeException $e) {
+							if (isset($uniquedAnalysedCodeExceptionMessages[$e->getMessage()])) {
+								continue;
+							}
+
+							$uniquedAnalysedCodeExceptionMessages[$e->getMessage()] = true;
+							$fileErrors[] = (new Error($e->getMessage(), $file, $node->getStartLine(), $e, null, null, $e->getTip()))
+								->withIdentifier('phpstan.internal')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						} catch (IdentifierNotFound $e) {
+							$fileErrors[] = (new Error(sprintf('Reflection error: %s not found.', $e->getIdentifier()->getName()), $file, $node->getStartLine(), $e, null, null, 'Learn more at https://phpstan.org/user-guide/discovering-symbols'))
+								->withIdentifier('phpstan.reflection')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						} catch (UnableToCompileNode | CircularReference $e) {
+							$fileErrors[] = (new Error(sprintf('Reflection error: %s', $e->getMessage()), $file, $node->getStartLine(), $e))
+								->withIdentifier('phpstan.reflection')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						}
+
+						foreach ($ruleErrors as $ruleError) {
+							$temporaryFileErrors[] = $this->ruleErrorTransformer->transform($ruleError, $scope, $nodeType, $node->getStartLine());
+						}
+					}
+
+					foreach ($collectorRegistry->getCollectors($nodeType) as $collector) {
+						try {
+							$collectedData = $collector->processNode($node, $scope);
+						} catch (AnalysedCodeException $e) {
+							if (isset($uniquedAnalysedCodeExceptionMessages[$e->getMessage()])) {
+								continue;
+							}
+
+							$uniquedAnalysedCodeExceptionMessages[$e->getMessage()] = true;
+							$fileErrors[] = (new Error($e->getMessage(), $file, $node->getStartLine(), $e, null, null, $e->getTip()))
+								->withIdentifier('phpstan.internal')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						} catch (IdentifierNotFound $e) {
+							$fileErrors[] = (new Error(sprintf('Reflection error: %s not found.', $e->getIdentifier()->getName()), $file, $node->getStartLine(), $e, null, null, 'Learn more at https://phpstan.org/user-guide/discovering-symbols'))
+								->withIdentifier('phpstan.reflection')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						} catch (UnableToCompileNode | CircularReference $e) {
+							$fileErrors[] = (new Error(sprintf('Reflection error: %s', $e->getMessage()), $file, $node->getStartLine(), $e))
+								->withIdentifier('phpstan.reflection')
+								->withMetadata([
+									InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+									InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+								]);
+							continue;
+						}
+
+						if ($collectedData === null) {
+							continue;
+						}
+
+						$fileCollectedData[] = new CollectedData(
+							$collectedData,
+							$scope->getFile(),
+							get_class($collector),
+						);
+					}
+
+					try {
+						$dependencies = $this->dependencyResolver->resolveDependencies($node, $scope);
+						foreach ($dependencies->getFileDependencies($scope->getFile(), $analysedFiles) as $dependentFile) {
+							$fileDependencies[] = $dependentFile;
+						}
+						if ($dependencies->getExportedNode() !== null) {
+							$exportedNodes[] = $dependencies->getExportedNode();
+						}
+					} catch (AnalysedCodeException) {
+						// pass
+					} catch (IdentifierNotFound) {
+						// pass
+					} catch (UnableToCompileNode) {
+						// pass
+					}
+				};
+
+				$scope = $this->scopeFactory->create(ScopeContext::create($file));
+				$nodeCallback(new FileNode($parserNodes), $scope);
+				$this->nodeScopeResolver->processNodes(
+					$parserNodes,
+					$scope,
+					$nodeCallback,
+				);
+
+				$localIgnoresProcessorResult = $this->localIgnoresProcessor->process(
+					$temporaryFileErrors,
+					$linesToIgnore,
+					$unmatchedLineIgnores,
+				);
+				foreach ($localIgnoresProcessorResult->getFileErrors() as $fileError) {
+					$fileErrors[] = $fileError;
+				}
+				foreach ($localIgnoresProcessorResult->getLocallyIgnoredErrors() as $locallyIgnoredError) {
+					$locallyIgnoredErrors[] = $locallyIgnoredError;
+				}
+				$linesToIgnore = $localIgnoresProcessorResult->getLinesToIgnore();
+				$unmatchedLineIgnores = $localIgnoresProcessorResult->getUnmatchedLineIgnores();
+			} catch (\PhpParser\Error $e) {
+				$fileErrors[] = (new Error($e->getRawMessage(), $file, $e->getStartLine() !== -1 ? $e->getStartLine() : null, $e))->withIdentifier('phpstan.parse');
+			} catch (ParserErrorsException $e) {
+				foreach ($e->getErrors() as $error) {
+					$fileErrors[] = (new Error($error->getMessage(), $e->getParsedFile() ?? $file, $error->getLine() !== -1 ? $error->getStartLine() : null, $e))->withIdentifier('phpstan.parse');
+				}
+			} catch (AnalysedCodeException $e) {
+				$fileErrors[] = (new Error($e->getMessage(), $file, null, $e, null, null, $e->getTip()))
+					->withIdentifier('phpstan.internal')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+			} catch (IdentifierNotFound $e) {
+				$fileErrors[] = (new Error(sprintf('Reflection error: %s not found.', $e->getIdentifier()->getName()), $file, null, $e, null, null, 'Learn more at https://phpstan.org/user-guide/discovering-symbols'))
+					->withIdentifier('phpstan.reflection')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+			} catch (UnableToCompileNode | CircularReference $e) {
+				$fileErrors[] = (new Error(sprintf('Reflection error: %s', $e->getMessage()), $file, null, $e))
+					->withIdentifier('phpstan.reflection')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+			}
+		} elseif (is_dir($file)) {
+			$fileErrors[] = (new Error(sprintf('File %s is a directory.', $file), $file, null, false))->withIdentifier('phpstan.path');
+		} else {
+			$fileErrors[] = (new Error(sprintf('File %s does not exist.', $file), $file, null, false))->withIdentifier('phpstan.path');
+		}
+
+		$this->restoreCollectErrorsHandler();
+
+		foreach ($linesToIgnore as $fileKey => $lines) {
+			if (count($lines) > 0) {
+				continue;
+			}
+
+			unset($linesToIgnore[$fileKey]);
+		}
+
+		foreach ($unmatchedLineIgnores as $fileKey => $lines) {
+			if (count($lines) > 0) {
+				continue;
+			}
+
+			unset($unmatchedLineIgnores[$fileKey]);
+		}
+
+		return new FileAnalyserResult(
+			$fileErrors,
+			$this->filteredPhpErrors,
+			$this->allPhpErrors,
+			$locallyIgnoredErrors,
+			$fileCollectedData,
+			array_values(array_unique($fileDependencies)),
+			$exportedNodes,
+			$linesToIgnore,
+			$unmatchedLineIgnores,
+		);
+	}
+
+	/**
+	 * @param Node[] $nodes
+	 * @return array<int, non-empty-list<string>|null>
+	 */
+	private function getLinesToIgnoreFromTokens(array $nodes): array
+	{
+		if (!isset($nodes[0])) {
+			return [];
+		}
+
+		/** @var array<int, non-empty-list<string>|null> */
+		return $nodes[0]->getAttribute('linesToIgnore', []);
+	}
+
+	/**
+	 * @param array<string, true> $analysedFiles
+	 */
+	private function collectErrors(array $analysedFiles): void
+	{
+		$this->filteredPhpErrors = [];
+		$this->allPhpErrors = [];
+		set_error_handler(function (int $errno, string $errstr, string $errfile, int $errline) use ($analysedFiles): bool {
+			if ((error_reporting() & $errno) === 0) {
+				// silence @ operator
+				return true;
+			}
+
+			$errorMessage = sprintf('%s: %s', $this->getErrorLabel($errno), $errstr);
+
+			$this->allPhpErrors[] = (new Error($errorMessage, $errfile, $errline, false))->withIdentifier('phpstan.php');
+
+			if ($errno === E_DEPRECATED) {
+				return true;
+			}
+
+			if (!isset($analysedFiles[$errfile])) {
+				return true;
+			}
+
+			$this->filteredPhpErrors[] = (new Error($errorMessage, $errfile, $errline, $errno === E_USER_DEPRECATED))->withIdentifier('phpstan.php');
+
+			return true;
+		});
+	}
+
+	private function restoreCollectErrorsHandler(): void
+	{
+		restore_error_handler();
+	}
+
+	private function getErrorLabel(int $errno): string
+	{
+		switch ($errno) {
+			case E_ERROR:
+				return 'Fatal error';
+			case E_WARNING:
+				return 'Warning';
+			case E_PARSE:
+				return 'Parse error';
+			case E_NOTICE:
+				return 'Notice';
+			case E_DEPRECATED:
+				return 'Deprecated';
+			case E_USER_ERROR:
+				return 'User error (E_USER_ERROR)';
+			case E_USER_WARNING:
+				return 'User warning (E_USER_WARNING)';
+			case E_USER_NOTICE:
+				return 'User notice (E_USER_NOTICE)';
+			case E_USER_DEPRECATED:
+				return 'Deprecated (E_USER_DEPRECATED)';
+			case E_STRICT:
+				return 'Strict error (E_STRICT)';
+		}
+
+		return 'Unknown PHP error';
+	}
+
+}
diff --git a/src/Analyser/FileAnalyserResult.php b/src/Analyser/FileAnalyserResult.php
new file mode 100644
index 00000000..427c3c53
--- /dev/null
+++ b/src/Analyser/FileAnalyserResult.php
@@ -0,0 +1,112 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Dependency\RootExportedNode;
+
+/**
+ * @phpstan-type LinesToIgnore = array<string, array<int, non-empty-list<string>|null>>
+ */
+final class FileAnalyserResult
+{
+
+	/**
+	 * @param list<Error> $errors
+	 * @param list<Error> $filteredPhpErrors
+	 * @param list<Error> $allPhpErrors
+	 * @param list<Error> $locallyIgnoredErrors
+	 * @param list<CollectedData> $collectedData
+	 * @param list<string> $dependencies
+	 * @param list<RootExportedNode> $exportedNodes
+	 * @param LinesToIgnore $linesToIgnore
+	 * @param LinesToIgnore $unmatchedLineIgnores
+	 */
+	public function __construct(
+		private array $errors,
+		private array $filteredPhpErrors,
+		private array $allPhpErrors,
+		private array $locallyIgnoredErrors,
+		private array $collectedData,
+		private array $dependencies,
+		private array $exportedNodes,
+		private array $linesToIgnore,
+		private array $unmatchedLineIgnores,
+	)
+	{
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getFilteredPhpErrors(): array
+	{
+		return $this->filteredPhpErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getAllPhpErrors(): array
+	{
+		return $this->allPhpErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getLocallyIgnoredErrors(): array
+	{
+		return $this->locallyIgnoredErrors;
+	}
+
+	/**
+	 * @return list<CollectedData>
+	 */
+	public function getCollectedData(): array
+	{
+		return $this->collectedData;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getDependencies(): array
+	{
+		return $this->dependencies;
+	}
+
+	/**
+	 * @return list<RootExportedNode>
+	 */
+	public function getExportedNodes(): array
+	{
+		return $this->exportedNodes;
+	}
+
+	/**
+	 * @return LinesToIgnore
+	 */
+	public function getLinesToIgnore(): array
+	{
+		return $this->linesToIgnore;
+	}
+
+	/**
+	 * @return LinesToIgnore
+	 */
+	public function getUnmatchedLineIgnores(): array
+	{
+		return $this->unmatchedLineIgnores;
+	}
+
+}
diff --git a/src/Analyser/FinalizerResult.php b/src/Analyser/FinalizerResult.php
new file mode 100644
index 00000000..4db6887a
--- /dev/null
+++ b/src/Analyser/FinalizerResult.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+final class FinalizerResult
+{
+
+	/**
+	 * @param list<Error> $collectorErrors
+	 * @param list<Error> $locallyIgnoredCollectorErrors
+	 */
+	public function __construct(
+		private AnalyserResult $analyserResult,
+		private array $collectorErrors,
+		private array $locallyIgnoredCollectorErrors,
+	)
+	{
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getErrors(): array
+	{
+		return $this->analyserResult->getErrors();
+	}
+
+	public function getAnalyserResult(): AnalyserResult
+	{
+		return $this->analyserResult;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getCollectorErrors(): array
+	{
+		return $this->collectorErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getLocallyIgnoredCollectorErrors(): array
+	{
+		return $this->locallyIgnoredCollectorErrors;
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoreLexer.php b/src/Analyser/Ignore/IgnoreLexer.php
new file mode 100644
index 00000000..420dbb08
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoreLexer.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Analyser\Error;
+use function implode;
+use const PREG_SET_ORDER;
+
+final class IgnoreLexer
+{
+
+	public const TOKEN_WHITESPACE = 1;
+	public const TOKEN_END = 2;
+	public const TOKEN_IDENTIFIER = 3;
+	public const TOKEN_COMMA = 4;
+	public const TOKEN_OPEN_PARENTHESIS = 5;
+	public const TOKEN_CLOSE_PARENTHESIS = 6;
+	public const TOKEN_OTHER = 7;
+
+	private const LABELS = [
+		self::TOKEN_WHITESPACE => 'T_WHITESPACE',
+		self::TOKEN_END => 'end',
+		self::TOKEN_IDENTIFIER => 'identifier',
+		self::TOKEN_COMMA => 'comma (,)',
+		self::TOKEN_OPEN_PARENTHESIS => 'T_OPEN_PARENTHESIS',
+		self::TOKEN_CLOSE_PARENTHESIS => 'T_CLOSE_PARENTHESIS',
+		self::TOKEN_OTHER => 'T_OTHER',
+	];
+
+	public const VALUE_OFFSET = 0;
+	public const TYPE_OFFSET = 1;
+	public const LINE_OFFSET = 2;
+
+	private ?string $regexp = null;
+
+	/**
+	 * @return list<array{string, self::TOKEN_*, int}>
+	 */
+	public function tokenize(string $input): array
+	{
+		if ($this->regexp === null) {
+			$this->regexp = $this->generateRegexp();
+		}
+
+		$matches = Strings::matchAll($input, $this->regexp, PREG_SET_ORDER);
+
+		$tokens = [];
+		$line = 1;
+		foreach ($matches as $match) {
+			/** @var self::TOKEN_* $type */
+			$type = (int) $match['MARK'];
+			$tokens[] = [$match[0], $type, $line];
+			if ($type !== self::TOKEN_END) {
+				continue;
+			}
+
+			$line++;
+		}
+
+		if (($type ?? null) !== self::TOKEN_END) {
+			$tokens[] = ['', self::TOKEN_END, $line]; // ensure ending token is present
+		}
+
+		return $tokens;
+	}
+
+	/**
+	 * @param self::TOKEN_* $type
+	 */
+	public function getLabel(int $type): string
+	{
+		return self::LABELS[$type];
+	}
+
+	private function generateRegexp(): string
+	{
+		$patterns = [
+			self::TOKEN_WHITESPACE => '[\\x09\\x20]++',
+			self::TOKEN_END => '(\\r?+\\n[\\x09\\x20]*+(?:\\*(?!/)\\x20?+)?|\\*/)',
+			self::TOKEN_IDENTIFIER => Error::PATTERN_IDENTIFIER,
+			self::TOKEN_COMMA => ',',
+			self::TOKEN_OPEN_PARENTHESIS => '\\(',
+			self::TOKEN_CLOSE_PARENTHESIS => '\\)',
+
+			// everything except whitespaces and parentheses
+			self::TOKEN_OTHER => '([^\\s\\)\\(])++',
+		];
+
+		foreach ($patterns as $type => &$pattern) {
+			$pattern = '(?:' . $pattern . ')(*MARK:' . $type . ')';
+		}
+
+		return '~' . implode('|', $patterns) . '~Asi';
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoreParseException.php b/src/Analyser/Ignore/IgnoreParseException.php
new file mode 100644
index 00000000..e03a220a
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoreParseException.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use Exception;
+
+final class IgnoreParseException extends Exception
+{
+
+	public function __construct(string $message, private int $phpDocLine)
+	{
+		parent::__construct($message);
+	}
+
+	public function getPhpDocLine(): int
+	{
+		return $this->phpDocLine;
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoredError.php b/src/Analyser/Ignore/IgnoredError.php
new file mode 100644
index 00000000..2f4fbb33
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoredError.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Analyser\Error;
+use PHPStan\File\FileExcluder;
+use PHPStan\File\FileHelper;
+use PHPStan\ShouldNotHappenException;
+use function count;
+use function implode;
+use function is_array;
+use function preg_quote;
+use function sprintf;
+use function str_replace;
+
+final class IgnoredError
+{
+
+	/**
+	 * @param mixed[]|string $ignoredError
+	 * @return string Representation of the ignored error
+	 */
+	public static function stringifyPattern($ignoredError): string
+	{
+		if (!is_array($ignoredError)) {
+			return $ignoredError;
+		}
+
+		$message = '';
+		if (isset($ignoredError['message'])) {
+			$message = $ignoredError['message'];
+		}
+		if (isset($ignoredError['identifier'])) {
+			if ($message === '') {
+				$message = $ignoredError['identifier'];
+			} else {
+				$message = sprintf('%s (%s)', $message, $ignoredError['identifier']);
+			}
+		}
+
+		if ($message === '') {
+			throw new ShouldNotHappenException();
+		}
+
+		// ignore by path
+		if (isset($ignoredError['path'])) {
+			return sprintf('%s in path %s', $message, $ignoredError['path']);
+		} elseif (isset($ignoredError['paths'])) {
+			if (count($ignoredError['paths']) === 1) {
+				return sprintf('%s in path %s', $message, implode(', ', $ignoredError['paths']));
+
+			}
+			return sprintf('%s in paths: %s', $message, implode(', ', $ignoredError['paths']));
+		}
+
+		return $message;
+	}
+
+	/**
+	 * @return bool To ignore or not to ignore?
+	 */
+	public static function shouldIgnore(
+		FileHelper $fileHelper,
+		Error $error,
+		?string $ignoredErrorPattern,
+		?string $identifier,
+		?string $path,
+	): bool
+	{
+		if ($identifier !== null) {
+			if ($error->getIdentifier() !== $identifier) {
+				return false;
+			}
+		}
+
+		if ($ignoredErrorPattern !== null) {
+			// normalize newlines to allow working with ignore-patterns independent of used OS newline-format
+			$errorMessage = $error->getMessage();
+			$errorMessage = str_replace(['\r\n', '\r'], '\n', $errorMessage);
+			$ignoredErrorPattern = str_replace([preg_quote('\r\n'), preg_quote('\r')], preg_quote('\n'), $ignoredErrorPattern);
+			if (Strings::match($errorMessage, $ignoredErrorPattern) === null) {
+				return false;
+			}
+		}
+
+		if ($path !== null) {
+			$fileExcluder = new FileExcluder($fileHelper, [$path]);
+			$isExcluded = $fileExcluder->isExcludedFromAnalysing($error->getFilePath());
+			if (!$isExcluded && $error->getTraitFilePath() !== null) {
+				return $fileExcluder->isExcludedFromAnalysing($error->getTraitFilePath());
+			}
+
+			return $isExcluded;
+		}
+
+		return true;
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoredErrorHelper.php b/src/Analyser/Ignore/IgnoredErrorHelper.php
new file mode 100644
index 00000000..27b5e927
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoredErrorHelper.php
@@ -0,0 +1,135 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PHPStan\File\FileHelper;
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function array_values;
+use function is_array;
+use function is_file;
+use function sprintf;
+
+final class IgnoredErrorHelper
+{
+
+	/**
+	 * @param (string|mixed[])[] $ignoreErrors
+	 */
+	public function __construct(
+		private FileHelper $fileHelper,
+		private array $ignoreErrors,
+		private bool $reportUnmatchedIgnoredErrors,
+	)
+	{
+	}
+
+	public function initialize(): IgnoredErrorHelperResult
+	{
+		$otherIgnoreErrors = [];
+		$ignoreErrorsByFile = [];
+		$errors = [];
+
+		$expandedIgnoreErrors = [];
+		foreach ($this->ignoreErrors as $ignoreError) {
+			if (is_array($ignoreError)) {
+				if (!isset($ignoreError['message']) && !isset($ignoreError['messages']) && !isset($ignoreError['identifier'])) {
+					$errors[] = sprintf(
+						'Ignored error %s is missing a message or an identifier.',
+						Json::encode($ignoreError),
+					);
+					continue;
+				}
+				if (isset($ignoreError['messages'])) {
+					foreach ($ignoreError['messages'] as $message) {
+						$expandedIgnoreError = $ignoreError;
+						unset($expandedIgnoreError['messages']);
+						$expandedIgnoreError['message'] = $message;
+						$expandedIgnoreErrors[] = $expandedIgnoreError;
+					}
+				} else {
+					$expandedIgnoreErrors[] = $ignoreError;
+				}
+			} else {
+				$expandedIgnoreErrors[] = $ignoreError;
+			}
+		}
+
+		$uniquedExpandedIgnoreErrors = [];
+		foreach ($expandedIgnoreErrors as $ignoreError) {
+			if (!isset($ignoreError['message']) && !isset($ignoreError['identifier'])) {
+				$uniquedExpandedIgnoreErrors[] = $ignoreError;
+				continue;
+			}
+			if (!isset($ignoreError['path'])) {
+				$uniquedExpandedIgnoreErrors[] = $ignoreError;
+				continue;
+			}
+
+			$key = $ignoreError['path'];
+			if (isset($ignoreError['message'])) {
+				$key = sprintf("%s\n%s", $key, $ignoreError['message']);
+			}
+			if (isset($ignoreError['identifier'])) {
+				$key = sprintf("%s\n%s", $key, $ignoreError['identifier']);
+			}
+			if ($key === '') {
+				throw new ShouldNotHappenException();
+			}
+
+			if (!array_key_exists($key, $uniquedExpandedIgnoreErrors)) {
+				$uniquedExpandedIgnoreErrors[$key] = $ignoreError;
+				continue;
+			}
+
+			$uniquedExpandedIgnoreErrors[$key] = [
+				'message' => $ignoreError['message'] ?? null,
+				'path' => $ignoreError['path'],
+				'identifier' => $ignoreError['identifier'] ?? null,
+				'count' => ($uniquedExpandedIgnoreErrors[$key]['count'] ?? 1) + ($ignoreError['count'] ?? 1),
+				'reportUnmatched' => ($uniquedExpandedIgnoreErrors[$key]['reportUnmatched'] ?? $this->reportUnmatchedIgnoredErrors) || ($ignoreError['reportUnmatched'] ?? $this->reportUnmatchedIgnoredErrors),
+			];
+		}
+
+		$expandedIgnoreErrors = array_values($uniquedExpandedIgnoreErrors);
+
+		foreach ($expandedIgnoreErrors as $i => $ignoreError) {
+			$ignoreErrorEntry = [
+				'index' => $i,
+				'ignoreError' => $ignoreError,
+			];
+			try {
+				if (is_array($ignoreError)) {
+					if (!isset($ignoreError['message']) && !isset($ignoreError['identifier'])) {
+						$errors[] = sprintf(
+							'Ignored error %s is missing a message or an identifier.',
+							Json::encode($ignoreError),
+						);
+						continue;
+					}
+					if (!isset($ignoreError['path'])) {
+						$otherIgnoreErrors[] = $ignoreErrorEntry;
+					} elseif (@is_file($ignoreError['path'])) {
+						$normalizedPath = $this->fileHelper->normalizePath($ignoreError['path']);
+						$ignoreError['path'] = $normalizedPath;
+						$ignoreErrorsByFile[$normalizedPath][] = $ignoreErrorEntry;
+						$ignoreError['realPath'] = $normalizedPath;
+						$expandedIgnoreErrors[$i] = $ignoreError;
+					} else {
+						$otherIgnoreErrors[] = $ignoreErrorEntry;
+					}
+				} else {
+					$otherIgnoreErrors[] = $ignoreErrorEntry;
+				}
+			} catch (JsonException $e) {
+				$errors[] = $e->getMessage();
+			}
+		}
+
+		return new IgnoredErrorHelperResult($this->fileHelper, $errors, $otherIgnoreErrors, $ignoreErrorsByFile, $expandedIgnoreErrors, $this->reportUnmatchedIgnoredErrors);
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoredErrorHelperProcessedResult.php b/src/Analyser/Ignore/IgnoredErrorHelperProcessedResult.php
new file mode 100644
index 00000000..08e30796
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoredErrorHelperProcessedResult.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use PHPStan\Analyser\Error;
+
+final class IgnoredErrorHelperProcessedResult
+{
+
+	/**
+	 * @param list<Error> $notIgnoredErrors
+	 * @param list<array{Error, mixed[]|string}> $ignoredErrors
+	 * @param list<string> $otherIgnoreMessages
+	 */
+	public function __construct(
+		private array $notIgnoredErrors,
+		private array $ignoredErrors,
+		private array $otherIgnoreMessages,
+	)
+	{
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getNotIgnoredErrors(): array
+	{
+		return $this->notIgnoredErrors;
+	}
+
+	/**
+	 * @return list<array{Error, mixed[]|string}>
+	 */
+	public function getIgnoredErrors(): array
+	{
+		return $this->ignoredErrors;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getOtherIgnoreMessages(): array
+	{
+		return $this->otherIgnoreMessages;
+	}
+
+}
diff --git a/src/Analyser/Ignore/IgnoredErrorHelperResult.php b/src/Analyser/Ignore/IgnoredErrorHelperResult.php
new file mode 100644
index 00000000..88784d0c
--- /dev/null
+++ b/src/Analyser/Ignore/IgnoredErrorHelperResult.php
@@ -0,0 +1,243 @@
+<?php 
+
+namespace PHPStan\Analyser\Ignore;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\File\FileHelper;
+use PHPStan\ShouldNotHappenException;
+use function array_fill_keys;
+use function array_key_exists;
+use function array_values;
+use function count;
+use function is_array;
+use function is_string;
+use function sprintf;
+
+final class IgnoredErrorHelperResult
+{
+
+	/**
+	 * @param list<string> $errors
+	 * @param array<array<mixed>> $otherIgnoreErrors
+	 * @param array<string, array<array<mixed>>> $ignoreErrorsByFile
+	 * @param (string|mixed[])[] $ignoreErrors
+	 */
+	public function __construct(
+		private FileHelper $fileHelper,
+		private array $errors,
+		private array $otherIgnoreErrors,
+		private array $ignoreErrorsByFile,
+		private array $ignoreErrors,
+		private bool $reportUnmatchedIgnoredErrors,
+	)
+	{
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+	/**
+	 * @param Error[] $errors
+	 * @param string[] $analysedFiles
+	 */
+	public function process(
+		array $errors,
+		bool $onlyFiles,
+		array $analysedFiles,
+		bool $hasInternalErrors,
+	): IgnoredErrorHelperProcessedResult
+	{
+		$unmatchedIgnoredErrors = $this->ignoreErrors;
+		$stringErrors = [];
+
+		$processIgnoreError = function (Error $error, int $i, $ignore) use (&$unmatchedIgnoredErrors, &$stringErrors): bool {
+			$shouldBeIgnored = false;
+			if (is_string($ignore)) {
+				$shouldBeIgnored = IgnoredError::shouldIgnore($this->fileHelper, $error, $ignore, null, null);
+				if ($shouldBeIgnored) {
+					unset($unmatchedIgnoredErrors[$i]);
+				}
+			} else {
+				if (isset($ignore['path'])) {
+					$shouldBeIgnored = IgnoredError::shouldIgnore($this->fileHelper, $error, $ignore['message'] ?? null, $ignore['identifier'] ?? null, $ignore['path']);
+					if ($shouldBeIgnored) {
+						if (isset($ignore['count'])) {
+							$realCount = $unmatchedIgnoredErrors[$i]['realCount'] ?? 0;
+							$realCount++;
+							$unmatchedIgnoredErrors[$i]['realCount'] = $realCount;
+
+							if (!isset($unmatchedIgnoredErrors[$i]['file'])) {
+								$unmatchedIgnoredErrors[$i]['file'] = $error->getFile();
+								$unmatchedIgnoredErrors[$i]['line'] = $error->getLine();
+							}
+
+							if ($realCount > $ignore['count']) {
+								$shouldBeIgnored = false;
+							}
+						} else {
+							unset($unmatchedIgnoredErrors[$i]);
+						}
+					}
+				} elseif (isset($ignore['paths'])) {
+					foreach ($ignore['paths'] as $j => $ignorePath) {
+						$shouldBeIgnored = IgnoredError::shouldIgnore($this->fileHelper, $error, $ignore['message'] ?? null, $ignore['identifier'] ?? null, $ignorePath);
+						if (!$shouldBeIgnored) {
+							continue;
+						}
+
+						if (isset($unmatchedIgnoredErrors[$i])) {
+							if (!is_array($unmatchedIgnoredErrors[$i])) {
+								throw new ShouldNotHappenException();
+							}
+							unset($unmatchedIgnoredErrors[$i]['paths'][$j]);
+							if (isset($unmatchedIgnoredErrors[$i]['paths']) && count($unmatchedIgnoredErrors[$i]['paths']) === 0) {
+								unset($unmatchedIgnoredErrors[$i]);
+							}
+						}
+						break;
+					}
+				} else {
+					$shouldBeIgnored = IgnoredError::shouldIgnore($this->fileHelper, $error, $ignore['message'] ?? null, $ignore['identifier'] ?? null, null);
+					if ($shouldBeIgnored) {
+						unset($unmatchedIgnoredErrors[$i]);
+					}
+				}
+			}
+
+			if ($shouldBeIgnored) {
+				if (!$error->canBeIgnored()) {
+					$stringErrors[] = sprintf(
+						'Error message "%s" cannot be ignored, use excludePaths instead.',
+						$error->getMessage(),
+					);
+					return true;
+				}
+				return false;
+			}
+
+			return true;
+		};
+
+		$ignoredErrors = [];
+		foreach ($errors as $errorIndex => $error) {
+			$filePath = $this->fileHelper->normalizePath($error->getFilePath());
+			if (isset($this->ignoreErrorsByFile[$filePath])) {
+				foreach ($this->ignoreErrorsByFile[$filePath] as $ignoreError) {
+					$i = $ignoreError['index'];
+					$ignore = $ignoreError['ignoreError'];
+					$result = $processIgnoreError($error, $i, $ignore);
+					if (!$result) {
+						unset($errors[$errorIndex]);
+						$ignoredErrors[] = [$error, $ignore];
+						continue 2;
+					}
+				}
+			}
+
+			$traitFilePath = $error->getTraitFilePath();
+			if ($traitFilePath !== null) {
+				$normalizedTraitFilePath = $this->fileHelper->normalizePath($traitFilePath);
+				if (isset($this->ignoreErrorsByFile[$normalizedTraitFilePath])) {
+					foreach ($this->ignoreErrorsByFile[$normalizedTraitFilePath] as $ignoreError) {
+						$i = $ignoreError['index'];
+						$ignore = $ignoreError['ignoreError'];
+						$result = $processIgnoreError($error, $i, $ignore);
+						if (!$result) {
+							unset($errors[$errorIndex]);
+							$ignoredErrors[] = [$error, $ignore];
+							continue 2;
+						}
+					}
+				}
+			}
+
+			foreach ($this->otherIgnoreErrors as $ignoreError) {
+				$i = $ignoreError['index'];
+				$ignore = $ignoreError['ignoreError'];
+
+				$result = $processIgnoreError($error, $i, $ignore);
+				if (!$result) {
+					unset($errors[$errorIndex]);
+					$ignoredErrors[] = [$error, $ignore];
+					continue 2;
+				}
+			}
+		}
+
+		$errors = array_values($errors);
+
+		foreach ($unmatchedIgnoredErrors as $unmatchedIgnoredError) {
+			if (!isset($unmatchedIgnoredError['count']) || !isset($unmatchedIgnoredError['realCount'])) {
+				continue;
+			}
+
+			if ($unmatchedIgnoredError['realCount'] <= $unmatchedIgnoredError['count']) {
+				continue;
+			}
+
+			$errors[] = (new Error(sprintf(
+				'Ignored error pattern %s is expected to occur %d %s, but occurred %d %s.',
+				IgnoredError::stringifyPattern($unmatchedIgnoredError),
+				$unmatchedIgnoredError['count'],
+				$unmatchedIgnoredError['count'] === 1 ? 'time' : 'times',
+				$unmatchedIgnoredError['realCount'],
+				$unmatchedIgnoredError['realCount'] === 1 ? 'time' : 'times',
+			), $unmatchedIgnoredError['file'], $unmatchedIgnoredError['line'], false))->withIdentifier('ignore.count');
+		}
+
+		$analysedFilesKeys = array_fill_keys($analysedFiles, true);
+
+		if (!$hasInternalErrors) {
+			foreach ($unmatchedIgnoredErrors as $unmatchedIgnoredError) {
+				$reportUnmatched = $unmatchedIgnoredError['reportUnmatched'] ?? $this->reportUnmatchedIgnoredErrors;
+				if ($reportUnmatched === false) {
+					continue;
+				}
+				if (
+					isset($unmatchedIgnoredError['count'])
+					&& isset($unmatchedIgnoredError['realCount'])
+					&& (isset($unmatchedIgnoredError['realPath']) || !$onlyFiles)
+				) {
+					if ($unmatchedIgnoredError['realCount'] < $unmatchedIgnoredError['count']) {
+						$errors[] = (new Error(sprintf(
+							'Ignored error pattern %s is expected to occur %d %s, but occurred only %d %s.',
+							IgnoredError::stringifyPattern($unmatchedIgnoredError),
+							$unmatchedIgnoredError['count'],
+							$unmatchedIgnoredError['count'] === 1 ? 'time' : 'times',
+							$unmatchedIgnoredError['realCount'],
+							$unmatchedIgnoredError['realCount'] === 1 ? 'time' : 'times',
+						), $unmatchedIgnoredError['file'], $unmatchedIgnoredError['line'], false))->withIdentifier('ignore.count');
+					}
+				} elseif (isset($unmatchedIgnoredError['realPath'])) {
+					if (!array_key_exists($unmatchedIgnoredError['realPath'], $analysedFilesKeys)) {
+						continue;
+					}
+
+					$errors[] = (new Error(
+						sprintf(
+							'Ignored error pattern %s was not matched in reported errors.',
+							IgnoredError::stringifyPattern($unmatchedIgnoredError),
+						),
+						$unmatchedIgnoredError['realPath'],
+						null,
+						false,
+					))->withIdentifier('ignore.unmatched');
+				} elseif (!$onlyFiles) {
+					$stringErrors[] = sprintf(
+						'Ignored error pattern %s was not matched in reported errors.',
+						IgnoredError::stringifyPattern($unmatchedIgnoredError),
+					);
+				}
+			}
+		}
+
+		return new IgnoredErrorHelperProcessedResult($errors, $ignoredErrors, $stringErrors);
+	}
+
+}
diff --git a/src/Analyser/ImpurePoint.php b/src/Analyser/ImpurePoint.php
new file mode 100644
index 00000000..7c7518da
--- /dev/null
+++ b/src/Analyser/ImpurePoint.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PHPStan\Node\VirtualNode;
+
+/**
+ * @phpstan-type ImpurePointIdentifier = 'echo'|'die'|'exit'|'propertyAssign'|'propertyAssignByRef'|'propertyUnset'|'methodCall'|'new'|'functionCall'|'include'|'require'|'print'|'eval'|'superglobal'|'yield'|'yieldFrom'|'static'|'global'|'betweenPhpTags'
+ * @api
+ */
+final class ImpurePoint
+{
+
+	/**
+	 * @param Node\Expr|Node\Stmt|VirtualNode $node
+	 * @param ImpurePointIdentifier $identifier
+	 */
+	public function __construct(
+		private Scope $scope,
+		private Node $node,
+		private string $identifier,
+		private string $description,
+		private bool $certain,
+	)
+	{
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	/**
+	 * @return Node\Expr|Node\Stmt|VirtualNode
+	 */
+	public function getNode()
+	{
+		return $this->node;
+	}
+
+	/**
+	 * @return ImpurePointIdentifier
+	 */
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	public function getDescription(): string
+	{
+		return $this->description;
+	}
+
+	public function isCertain(): bool
+	{
+		return $this->certain;
+	}
+
+}
diff --git a/src/Analyser/InternalError.php b/src/Analyser/InternalError.php
new file mode 100644
index 00000000..74e03354
--- /dev/null
+++ b/src/Analyser/InternalError.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use JsonSerializable;
+use ReturnTypeWillChange;
+use Throwable;
+use function array_map;
+use function array_unshift;
+
+/**
+ * @api
+ * @phpstan-type Trace = list<array{file: string|null, line: int|null}>
+ */
+final class InternalError implements JsonSerializable
+{
+
+	public const STACK_TRACE_METADATA_KEY = 'stackTrace';
+
+	public const STACK_TRACE_AS_STRING_METADATA_KEY = 'stackTraceAsString';
+
+	/**
+	 * @param Trace $trace
+	 */
+	public function __construct(
+		private string $message,
+		private string $contextDescription,
+		private array $trace,
+		private ?string $traceAsString,
+		private bool $shouldReportBug,
+	)
+	{
+	}
+
+	/**
+	 * @return Trace
+	 */
+	public static function prepareTrace(Throwable $exception): array
+	{
+		$trace = array_map(static fn (array $trace) => [
+			'file' => $trace['file'] ?? null,
+			'line' => $trace['line'] ?? null,
+		], $exception->getTrace());
+
+		array_unshift($trace, [
+			'file' => $exception->getFile(),
+			'line' => $exception->getLine(),
+		]);
+
+		return $trace;
+	}
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getContextDescription(): string
+	{
+		return $this->contextDescription;
+	}
+
+	/**
+	 * @return Trace
+	 */
+	public function getTrace(): array
+	{
+		return $this->trace;
+	}
+
+	public function getTraceAsString(): ?string
+	{
+		return $this->traceAsString;
+	}
+
+	public function shouldReportBug(): bool
+	{
+		return $this->shouldReportBug;
+	}
+
+	/**
+	 * @param mixed[] $json
+	 */
+	public static function decode(array $json): self
+	{
+		return new self($json['message'], $json['contextDescription'], $json['trace'], $json['traceAsString'], $json['shouldReportBug']);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'message' => $this->message,
+			'contextDescription' => $this->contextDescription,
+			'trace' => $this->trace,
+			'traceAsString' => $this->traceAsString,
+			'shouldReportBug' => $this->shouldReportBug,
+		];
+	}
+
+}
diff --git a/src/Analyser/InternalScopeFactory.php b/src/Analyser/InternalScopeFactory.php
new file mode 100644
index 00000000..a19b0178
--- /dev/null
+++ b/src/Analyser/InternalScopeFactory.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+
+interface InternalScopeFactory
+{
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $expressionTypes
+	 * @param array<string, ExpressionTypeHolder> $nativeExpressionTypes
+	 * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
+	 * @param list<string> $inClosureBindScopeClasses
+	 * @param array<string, true> $currentlyAssignedExpressions
+	 * @param array<string, true> $currentlyAllowedUndefinedExpressions
+	 * @param list<array{FunctionReflection|MethodReflection|null, ParameterReflection|null}> $inFunctionCallsStack
+	 */
+	public function create(
+		ScopeContext $context,
+		bool $declareStrictTypes = false,
+		PhpFunctionFromParserNodeReflection|null $function = null,
+		?string $namespace = null,
+		array $expressionTypes = [],
+		array $nativeExpressionTypes = [],
+		array $conditionalExpressions = [],
+		array $inClosureBindScopeClasses = [],
+		?ParametersAcceptor $anonymousFunctionReflection = null,
+		bool $inFirstLevelStatement = true,
+		array $currentlyAssignedExpressions = [],
+		array $currentlyAllowedUndefinedExpressions = [],
+		array $inFunctionCallsStack = [],
+		bool $afterExtractCall = false,
+		?Scope $parentScope = null,
+		bool $nativeTypesPromoted = false,
+	): MutatingScope;
+
+}
diff --git a/src/Analyser/LazyInternalScopeFactory.php b/src/Analyser/LazyInternalScopeFactory.php
new file mode 100644
index 00000000..a476a75d
--- /dev/null
+++ b/src/Analyser/LazyInternalScopeFactory.php
@@ -0,0 +1,81 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\Type\DynamicReturnTypeExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\ExpressionTypeResolverExtensionRegistryProvider;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+
+final class LazyInternalScopeFactory implements InternalScopeFactory
+{
+
+	public function __construct(
+		private Container $container,
+	)
+	{
+	}
+
+	public function create(
+		ScopeContext $context,
+		bool $declareStrictTypes = false,
+		PhpFunctionFromParserNodeReflection|null $function = null,
+		?string $namespace = null,
+		array $expressionTypes = [],
+		array $nativeExpressionTypes = [],
+		array $conditionalExpressions = [],
+		array $inClosureBindScopeClasses = [],
+		?ParametersAcceptor $anonymousFunctionReflection = null,
+		bool $inFirstLevelStatement = true,
+		array $currentlyAssignedExpressions = [],
+		array $currentlyAllowedUndefinedExpressions = [],
+		array $inFunctionCallsStack = [],
+		bool $afterExtractCall = false,
+		?Scope $parentScope = null,
+		bool $nativeTypesPromoted = false,
+	): MutatingScope
+	{
+		return new MutatingScope(
+			$this,
+			$this->container->getByType(ReflectionProvider::class),
+			$this->container->getByType(InitializerExprTypeResolver::class),
+			$this->container->getByType(DynamicReturnTypeExtensionRegistryProvider::class)->getRegistry(),
+			$this->container->getByType(ExpressionTypeResolverExtensionRegistryProvider::class)->getRegistry(),
+			$this->container->getByType(ExprPrinter::class),
+			$this->container->getByType(TypeSpecifier::class),
+			$this->container->getByType(PropertyReflectionFinder::class),
+			$this->container->getService('currentPhpVersionSimpleParser'),
+			$this->container->getByType(NodeScopeResolver::class),
+			$this->container->getByType(RicherScopeGetTypeHelper::class),
+			$this->container->getByType(ConstantResolver::class),
+			$context,
+			$this->container->getByType(PhpVersion::class),
+			$this->container->getByType(AttributeReflectionFactory::class),
+			$this->container->getParameter('phpVersion'),
+			$declareStrictTypes,
+			$function,
+			$namespace,
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$conditionalExpressions,
+			$inClosureBindScopeClasses,
+			$anonymousFunctionReflection,
+			$inFirstLevelStatement,
+			$currentlyAssignedExpressions,
+			$currentlyAllowedUndefinedExpressions,
+			$inFunctionCallsStack,
+			$afterExtractCall,
+			$parentScope,
+			$nativeTypesPromoted,
+		);
+	}
+
+}
diff --git a/src/Analyser/LocalIgnoresProcessor.php b/src/Analyser/LocalIgnoresProcessor.php
new file mode 100644
index 00000000..de5534f0
--- /dev/null
+++ b/src/Analyser/LocalIgnoresProcessor.php
@@ -0,0 +1,102 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use function array_key_exists;
+use function array_values;
+use function count;
+use function is_array;
+
+/**
+ * @phpstan-import-type LinesToIgnore from FileAnalyserResult
+ */
+final class LocalIgnoresProcessor
+{
+
+	/**
+	 * @param list<Error> $temporaryFileErrors
+	 * @param LinesToIgnore $linesToIgnore
+	 * @param LinesToIgnore $unmatchedLineIgnores
+	 */
+	public function process(
+		array $temporaryFileErrors,
+		array $linesToIgnore,
+		array $unmatchedLineIgnores,
+	): LocalIgnoresProcessorResult
+	{
+		$fileErrors = [];
+		$locallyIgnoredErrors = [];
+		foreach ($temporaryFileErrors as $tmpFileError) {
+			$line = $tmpFileError->getLine();
+			if (
+				$line !== null
+				&& $tmpFileError->canBeIgnored()
+				&& array_key_exists($tmpFileError->getFile(), $linesToIgnore)
+				&& array_key_exists($line, $linesToIgnore[$tmpFileError->getFile()])
+			) {
+				$identifiers = $linesToIgnore[$tmpFileError->getFile()][$line];
+				if ($identifiers === null) {
+					$locallyIgnoredErrors[] = $tmpFileError;
+					unset($unmatchedLineIgnores[$tmpFileError->getFile()][$line]);
+					continue;
+				}
+
+				if ($tmpFileError->getIdentifier() === null) {
+					$fileErrors[] = $tmpFileError;
+					continue;
+				}
+
+				foreach ($identifiers as $i => $ignoredIdentifier) {
+					if ($ignoredIdentifier !== $tmpFileError->getIdentifier()) {
+						continue;
+					}
+
+					unset($identifiers[$i]);
+
+					if (count($identifiers) > 0) {
+						$linesToIgnore[$tmpFileError->getFile()][$line] = array_values($identifiers);
+					} else {
+						unset($linesToIgnore[$tmpFileError->getFile()][$line]);
+					}
+
+					if (
+						array_key_exists($tmpFileError->getFile(), $unmatchedLineIgnores)
+						&& array_key_exists($line, $unmatchedLineIgnores[$tmpFileError->getFile()])
+					) {
+						$unmatchedIgnoredIdentifiers = $unmatchedLineIgnores[$tmpFileError->getFile()][$line];
+						if (is_array($unmatchedIgnoredIdentifiers)) {
+							foreach ($unmatchedIgnoredIdentifiers as $j => $unmatchedIgnoredIdentifier) {
+								if ($ignoredIdentifier !== $unmatchedIgnoredIdentifier) {
+									continue;
+								}
+
+								unset($unmatchedIgnoredIdentifiers[$j]);
+
+								if (count($unmatchedIgnoredIdentifiers) > 0) {
+									$unmatchedLineIgnores[$tmpFileError->getFile()][$line] = array_values($unmatchedIgnoredIdentifiers);
+								} else {
+									unset($unmatchedLineIgnores[$tmpFileError->getFile()][$line]);
+								}
+								break;
+							}
+						}
+					}
+
+					$locallyIgnoredErrors[] = $tmpFileError;
+					continue 2;
+				}
+			}
+
+			$fileErrors[] = $tmpFileError;
+		}
+
+		return new LocalIgnoresProcessorResult(
+			$fileErrors,
+			$locallyIgnoredErrors,
+			$linesToIgnore,
+			$unmatchedLineIgnores,
+		);
+	}
+
+}
diff --git a/src/Analyser/LocalIgnoresProcessorResult.php b/src/Analyser/LocalIgnoresProcessorResult.php
new file mode 100644
index 00000000..e0757bb7
--- /dev/null
+++ b/src/Analyser/LocalIgnoresProcessorResult.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+/**
+ * @phpstan-import-type LinesToIgnore from FileAnalyserResult
+ */
+final class LocalIgnoresProcessorResult
+{
+
+	/**
+	 * @param list<Error> $fileErrors
+	 * @param list<Error> $locallyIgnoredErrors
+	 * @param LinesToIgnore $linesToIgnore
+	 * @param LinesToIgnore $unmatchedLineIgnores
+	 */
+	public function __construct(
+		private array $fileErrors,
+		private array $locallyIgnoredErrors,
+		private array $linesToIgnore,
+		private array $unmatchedLineIgnores,
+	)
+	{
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getFileErrors(): array
+	{
+		return $this->fileErrors;
+	}
+
+	/**
+	 * @return list<Error>
+	 */
+	public function getLocallyIgnoredErrors(): array
+	{
+		return $this->locallyIgnoredErrors;
+	}
+
+	/**
+	 * @return LinesToIgnore
+	 */
+	public function getLinesToIgnore(): array
+	{
+		return $this->linesToIgnore;
+	}
+
+	/**
+	 * @return LinesToIgnore
+	 */
+	public function getUnmatchedLineIgnores(): array
+	{
+		return $this->unmatchedLineIgnores;
+	}
+
+}
diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
new file mode 100644
index 00000000..ccf644cd
--- /dev/null
+++ b/src/Analyser/MutatingScope.php
@@ -0,0 +1,6079 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use ArrayAccess;
+use Closure;
+use Generator;
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PhpParser\Node\ComplexType;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\BinaryOp;
+use PhpParser\Node\Expr\Cast\Bool_;
+use PhpParser\Node\Expr\Cast\Double;
+use PhpParser\Node\Expr\Cast\Int_;
+use PhpParser\Node\Expr\Cast\Object_;
+use PhpParser\Node\Expr\Cast\Unset_;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\InterpolatedStringPart;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified;
+use PhpParser\Node\PropertyHook;
+use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PhpParser\NodeFinder;
+use PHPStan\Node\ExecutionEndNode;
+use PHPStan\Node\Expr\AlwaysRememberedExpr;
+use PHPStan\Node\Expr\ExistingArrayDimFetch;
+use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
+use PHPStan\Node\Expr\GetIterableValueTypeExpr;
+use PHPStan\Node\Expr\GetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\OriginalPropertyTypeExpr;
+use PHPStan\Node\Expr\ParameterVariableOriginalValueExpr;
+use PHPStan\Node\Expr\PropertyInitializationExpr;
+use PHPStan\Node\Expr\SetExistingOffsetValueTypeExpr;
+use PHPStan\Node\Expr\SetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Node\Expr\UnsetOffsetExpr;
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Node\IssetExpr;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Parser\ArrayMapArgVisitor;
+use PHPStan\Parser\NewAssignedToPropertyVisitor;
+use PHPStan\Parser\Parser;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Php\PhpVersions;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Dummy\DummyConstructorReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Reflection\Php\DummyParameter;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\HasOffsetValueType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantTypeHelper;
+use PHPStan\Type\DynamicReturnTypeExtensionRegistry;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\ExpressionTypeResolverExtensionRegistry;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NonAcceptingNeverType;
+use PHPStan\Type\NonexistentParentClassType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\TypeWithClassName;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use PHPStan\Type\VoidType;
+use stdClass;
+use Throwable;
+use function abs;
+use function array_filter;
+use function array_key_exists;
+use function array_key_first;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function array_pop;
+use function array_slice;
+use function array_values;
+use function count;
+use function explode;
+use function get_class;
+use function implode;
+use function in_array;
+use function is_array;
+use function is_bool;
+use function is_numeric;
+use function is_string;
+use function ltrim;
+use function md5;
+use function sprintf;
+use function str_starts_with;
+use function strlen;
+use function strtolower;
+use function substr;
+use function usort;
+use const PHP_INT_MAX;
+use const PHP_INT_MIN;
+
+final class MutatingScope implements Scope
+{
+
+	private const BOOLEAN_EXPRESSION_MAX_PROCESS_DEPTH = 4;
+
+	private const KEEP_VOID_ATTRIBUTE_NAME = 'keepVoid';
+
+	/** @var Type[] */
+	private array $resolvedTypes = [];
+
+	/** @var array<string, self> */
+	private array $truthyScopes = [];
+
+	/** @var array<string, self> */
+	private array $falseyScopes = [];
+
+	/** @var non-empty-string|null */
+	private ?string $namespace;
+
+	private ?self $scopeOutOfFirstLevelStatement = null;
+
+	private ?self $scopeWithPromotedNativeTypes = null;
+
+	private static int $resolveClosureTypeDepth = 0;
+
+	/**
+	 * @param int|array{min: int, max: int}|null $configPhpVersion
+	 * @param array<string, ExpressionTypeHolder> $expressionTypes
+	 * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
+	 * @param list<string> $inClosureBindScopeClasses
+	 * @param array<string, true> $currentlyAssignedExpressions
+	 * @param array<string, true> $currentlyAllowedUndefinedExpressions
+	 * @param array<string, ExpressionTypeHolder> $nativeExpressionTypes
+	 * @param list<array{MethodReflection|FunctionReflection|null, ParameterReflection|null}> $inFunctionCallsStack
+	 */
+	public function __construct(
+		private InternalScopeFactory $scopeFactory,
+		private ReflectionProvider $reflectionProvider,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private DynamicReturnTypeExtensionRegistry $dynamicReturnTypeExtensionRegistry,
+		private ExpressionTypeResolverExtensionRegistry $expressionTypeResolverExtensionRegistry,
+		private ExprPrinter $exprPrinter,
+		private TypeSpecifier $typeSpecifier,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private Parser $parser,
+		private NodeScopeResolver $nodeScopeResolver,
+		private RicherScopeGetTypeHelper $richerScopeGetTypeHelper,
+		private ConstantResolver $constantResolver,
+		private ScopeContext $context,
+		private PhpVersion $phpVersion,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private int|array|null $configPhpVersion,
+		private bool $declareStrictTypes = false,
+		private PhpFunctionFromParserNodeReflection|null $function = null,
+		?string $namespace = null,
+		private array $expressionTypes = [],
+		private array $nativeExpressionTypes = [],
+		private array $conditionalExpressions = [],
+		private array $inClosureBindScopeClasses = [],
+		private ?ParametersAcceptor $anonymousFunctionReflection = null,
+		private bool $inFirstLevelStatement = true,
+		private array $currentlyAssignedExpressions = [],
+		private array $currentlyAllowedUndefinedExpressions = [],
+		private array $inFunctionCallsStack = [],
+		private bool $afterExtractCall = false,
+		private ?Scope $parentScope = null,
+		private bool $nativeTypesPromoted = false,
+	)
+	{
+		if ($namespace === '') {
+			$namespace = null;
+		}
+
+		$this->namespace = $namespace;
+	}
+
+	/** @api */
+	public function getFile(): string
+	{
+		return $this->context->getFile();
+	}
+
+	/** @api */
+	public function getFileDescription(): string
+	{
+		if ($this->context->getTraitReflection() === null) {
+			return $this->getFile();
+		}
+
+		/** @var ClassReflection $classReflection */
+		$classReflection = $this->context->getClassReflection();
+
+		$className = $classReflection->getDisplayName();
+		if (!$classReflection->isAnonymous()) {
+			$className = sprintf('class %s', $className);
+		}
+
+		$traitReflection = $this->context->getTraitReflection();
+		if ($traitReflection->getFileName() === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return sprintf(
+			'%s (in context of %s)',
+			$traitReflection->getFileName(),
+			$className,
+		);
+	}
+
+	/** @api */
+	public function isDeclareStrictTypes(): bool
+	{
+		return $this->declareStrictTypes;
+	}
+
+	public function enterDeclareStrictTypes(): self
+	{
+		return $this->scopeFactory->create(
+			$this->context,
+			true,
+			null,
+			null,
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+		);
+	}
+
+	/** @api */
+	public function isInClass(): bool
+	{
+		return $this->context->getClassReflection() !== null;
+	}
+
+	/** @api */
+	public function isInTrait(): bool
+	{
+		return $this->context->getTraitReflection() !== null;
+	}
+
+	/** @api */
+	public function getClassReflection(): ?ClassReflection
+	{
+		return $this->context->getClassReflection();
+	}
+
+	/** @api */
+	public function getTraitReflection(): ?ClassReflection
+	{
+		return $this->context->getTraitReflection();
+	}
+
+	/**
+	 * @api
+	 */
+	public function getFunction(): ?PhpFunctionFromParserNodeReflection
+	{
+		return $this->function;
+	}
+
+	/** @api */
+	public function getFunctionName(): ?string
+	{
+		return $this->function !== null ? $this->function->getName() : null;
+	}
+
+	/** @api */
+	public function getNamespace(): ?string
+	{
+		return $this->namespace;
+	}
+
+	/** @api */
+	public function getParentScope(): ?Scope
+	{
+		return $this->parentScope;
+	}
+
+	/** @api */
+	public function canAnyVariableExist(): bool
+	{
+		return ($this->function === null && !$this->isInAnonymousFunction()) || $this->afterExtractCall;
+	}
+
+	public function afterExtractCall(): self
+	{
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			[],
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			true,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function afterClearstatcacheCall(): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		foreach (array_keys($expressionTypes) as $exprString) {
+			// list from https://www.php.net/manual/en/function.clearstatcache.php
+
+			// stat(), lstat(), file_exists(), is_writable(), is_readable(), is_executable(), is_file(), is_dir(), is_link(), filectime(), fileatime(), filemtime(), fileinode(), filegroup(), fileowner(), filesize(), filetype(), and fileperms().
+			foreach ([
+				'stat',
+				'lstat',
+				'file_exists',
+				'is_writable',
+				'is_writeable',
+				'is_readable',
+				'is_executable',
+				'is_file',
+				'is_dir',
+				'is_link',
+				'filectime',
+				'fileatime',
+				'filemtime',
+				'fileinode',
+				'filegroup',
+				'fileowner',
+				'filesize',
+				'filetype',
+				'fileperms',
+			] as $functionName) {
+				if (!str_starts_with($exprString, $functionName . '(') && !str_starts_with($exprString, '\\' . $functionName . '(')) {
+					continue;
+				}
+
+				unset($expressionTypes[$exprString]);
+				continue 2;
+			}
+		}
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function afterOpenSslCall(string $openSslFunctionName): self
+	{
+		$expressionTypes = $this->expressionTypes;
+
+		if (in_array($openSslFunctionName, [
+			'openssl_cipher_iv_length',
+			'openssl_cms_decrypt',
+			'openssl_cms_encrypt',
+			'openssl_cms_read',
+			'openssl_cms_sign',
+			'openssl_cms_verify',
+			'openssl_csr_export_to_file',
+			'openssl_csr_export',
+			'openssl_csr_get_public_key',
+			'openssl_csr_get_subject',
+			'openssl_csr_new',
+			'openssl_csr_sign',
+			'openssl_decrypt',
+			'openssl_dh_compute_key',
+			'openssl_digest',
+			'openssl_encrypt',
+			'openssl_get_curve_names',
+			'openssl_get_privatekey',
+			'openssl_get_publickey',
+			'openssl_open',
+			'openssl_pbkdf2',
+			'openssl_pkcs12_export_to_file',
+			'openssl_pkcs12_export',
+			'openssl_pkcs12_read',
+			'openssl_pkcs7_decrypt',
+			'openssl_pkcs7_encrypt',
+			'openssl_pkcs7_read',
+			'openssl_pkcs7_sign',
+			'openssl_pkcs7_verify',
+			'openssl_pkey_derive',
+			'openssl_pkey_export_to_file',
+			'openssl_pkey_export',
+			'openssl_pkey_get_private',
+			'openssl_pkey_get_public',
+			'openssl_pkey_new',
+			'openssl_private_decrypt',
+			'openssl_private_encrypt',
+			'openssl_public_decrypt',
+			'openssl_public_encrypt',
+			'openssl_random_pseudo_bytes',
+			'openssl_seal',
+			'openssl_sign',
+			'openssl_spki_export_challenge',
+			'openssl_spki_export',
+			'openssl_spki_new',
+			'openssl_spki_verify',
+			'openssl_verify',
+			'openssl_x509_checkpurpose',
+			'openssl_x509_export_to_file',
+			'openssl_x509_export',
+			'openssl_x509_fingerprint',
+			'openssl_x509_read',
+			'openssl_x509_verify',
+		], true)) {
+			unset($expressionTypes['\openssl_error_string()']);
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/** @api */
+	public function hasVariableType(string $variableName): TrinaryLogic
+	{
+		if ($this->isGlobalVariable($variableName)) {
+			return TrinaryLogic::createYes();
+		}
+
+		$varExprString = '$' . $variableName;
+		if (!isset($this->expressionTypes[$varExprString])) {
+			if ($this->canAnyVariableExist()) {
+				return TrinaryLogic::createMaybe();
+			}
+
+			return TrinaryLogic::createNo();
+		}
+
+		return $this->expressionTypes[$varExprString]->getCertainty();
+	}
+
+	/** @api */
+	public function getVariableType(string $variableName): Type
+	{
+		if ($this->hasVariableType($variableName)->maybe()) {
+			if ($variableName === 'argc') {
+				return IntegerRangeType::fromInterval(1, null);
+			}
+			if ($variableName === 'argv') {
+				return TypeCombinator::intersect(
+					new ArrayType(new IntegerType(), new StringType()),
+					new NonEmptyArrayType(),
+					new AccessoryArrayListType(),
+				);
+			}
+			if ($this->canAnyVariableExist()) {
+				return new MixedType();
+			}
+		}
+
+		if ($this->isGlobalVariable($variableName)) {
+			return new ArrayType(new BenevolentUnionType([new IntegerType(), new StringType()]), new MixedType(true));
+		}
+
+		if ($this->hasVariableType($variableName)->no()) {
+			throw new UndefinedVariableException($this, $variableName);
+		}
+
+		$varExprString = '$' . $variableName;
+		if (!array_key_exists($varExprString, $this->expressionTypes)) {
+			return new MixedType();
+		}
+
+		return TypeUtils::resolveLateResolvableTypes($this->expressionTypes[$varExprString]->getType());
+	}
+
+	/**
+	 * @api
+	 * @return list<string>
+	 */
+	public function getDefinedVariables(): array
+	{
+		$variables = [];
+		foreach ($this->expressionTypes as $exprString => $holder) {
+			if (!$holder->getExpr() instanceof Variable) {
+				continue;
+			}
+			if (!$holder->getCertainty()->yes()) {
+				continue;
+			}
+
+			$variables[] = substr($exprString, 1);
+		}
+
+		return $variables;
+	}
+
+	/**
+	 * @api
+	 * @return list<string>
+	 */
+	public function getMaybeDefinedVariables(): array
+	{
+		$variables = [];
+		foreach ($this->expressionTypes as $exprString => $holder) {
+			if (!$holder->getExpr() instanceof Variable) {
+				continue;
+			}
+			if (!$holder->getCertainty()->maybe()) {
+				continue;
+			}
+
+			$variables[] = substr($exprString, 1);
+		}
+
+		return $variables;
+	}
+
+	private function isGlobalVariable(string $variableName): bool
+	{
+		return in_array($variableName, self::SUPERGLOBAL_VARIABLES, true);
+	}
+
+	/** @api */
+	public function hasConstant(Name $name): bool
+	{
+		$isCompilerHaltOffset = $name->toString() === '__COMPILER_HALT_OFFSET__';
+		if ($isCompilerHaltOffset) {
+			return $this->fileHasCompilerHaltStatementCalls();
+		}
+
+		if ($this->getGlobalConstantType($name) !== null) {
+			return true;
+		}
+
+		return $this->reflectionProvider->hasConstant($name, $this);
+	}
+
+	private function fileHasCompilerHaltStatementCalls(): bool
+	{
+		$nodes = $this->parser->parseFile($this->getFile());
+		foreach ($nodes as $node) {
+			if ($node instanceof Node\Stmt\HaltCompiler) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/** @api */
+	public function isInAnonymousFunction(): bool
+	{
+		return $this->anonymousFunctionReflection !== null;
+	}
+
+	/** @api */
+	public function getAnonymousFunctionReflection(): ?ParametersAcceptor
+	{
+		return $this->anonymousFunctionReflection;
+	}
+
+	/** @api */
+	public function getAnonymousFunctionReturnType(): ?Type
+	{
+		if ($this->anonymousFunctionReflection === null) {
+			return null;
+		}
+
+		return $this->anonymousFunctionReflection->getReturnType();
+	}
+
+	/** @api */
+	public function getType(Expr $node): Type
+	{
+		if ($node instanceof GetIterableKeyTypeExpr) {
+			return $this->getIterableKeyType($this->getType($node->getExpr()));
+		}
+		if ($node instanceof GetIterableValueTypeExpr) {
+			return $this->getIterableValueType($this->getType($node->getExpr()));
+		}
+		if ($node instanceof GetOffsetValueTypeExpr) {
+			return $this->getType($node->getVar())->getOffsetValueType($this->getType($node->getDim()));
+		}
+		if ($node instanceof ExistingArrayDimFetch) {
+			return $this->getType(new Expr\ArrayDimFetch($node->getVar(), $node->getDim()));
+		}
+		if ($node instanceof UnsetOffsetExpr) {
+			return $this->getType($node->getVar())->unsetOffset($this->getType($node->getDim()));
+		}
+		if ($node instanceof SetOffsetValueTypeExpr) {
+			return $this->getType($node->getVar())->setOffsetValueType(
+				$node->getDim() !== null ? $this->getType($node->getDim()) : null,
+				$this->getType($node->getValue()),
+			);
+		}
+		if ($node instanceof SetExistingOffsetValueTypeExpr) {
+			return $this->getType($node->getVar())->setExistingOffsetValueType(
+				$this->getType($node->getDim()),
+				$this->getType($node->getValue()),
+			);
+		}
+		if ($node instanceof TypeExpr) {
+			return $node->getExprType();
+		}
+
+		if ($node instanceof OriginalPropertyTypeExpr) {
+			$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($node->getPropertyFetch(), $this);
+			if ($propertyReflection === null) {
+				return new ErrorType();
+			}
+
+			return $propertyReflection->getReadableType();
+		}
+
+		$key = $this->getNodeKey($node);
+
+		if (!array_key_exists($key, $this->resolvedTypes)) {
+			$this->resolvedTypes[$key] = TypeUtils::resolveLateResolvableTypes($this->resolveType($key, $node));
+		}
+		return $this->resolvedTypes[$key];
+	}
+
+	private function getNodeKey(Expr $node): string
+	{
+		$key = $this->exprPrinter->printExpr($node);
+
+		$attributes = $node->getAttributes();
+		if (
+			$node instanceof Node\FunctionLike
+			&& (($attributes[ArrayMapArgVisitor::ATTRIBUTE_NAME] ?? null) !== null)
+			&& (($attributes['startFilePos'] ?? null) !== null)
+		) {
+			$key .= '/*' . $attributes['startFilePos'] . '*/';
+		}
+
+		if (($attributes[self::KEEP_VOID_ATTRIBUTE_NAME] ?? null) === true) {
+			$key .= '/*' . self::KEEP_VOID_ATTRIBUTE_NAME . '*/';
+		}
+
+		return $key;
+	}
+
+	private function getClosureScopeCacheKey(): string
+	{
+		$parts = [];
+		foreach ($this->expressionTypes as $exprString => $expressionTypeHolder) {
+			$parts[] = sprintf('%s::%s', $exprString, $expressionTypeHolder->getType()->describe(VerbosityLevel::cache()));
+		}
+		$parts[] = '---';
+		foreach ($this->nativeExpressionTypes as $exprString => $expressionTypeHolder) {
+			$parts[] = sprintf('%s::%s', $exprString, $expressionTypeHolder->getType()->describe(VerbosityLevel::cache()));
+		}
+
+		$parts[] = sprintf(':%d', count($this->inFunctionCallsStack));
+		foreach ($this->inFunctionCallsStack as [$method, $parameter]) {
+			if ($parameter === null) {
+				$parts[] = ',null';
+				continue;
+			}
+
+			$parts[] = sprintf(',%s', $parameter->getType()->describe(VerbosityLevel::cache()));
+		}
+
+		return md5(implode("\n", $parts));
+	}
+
+	private function resolveType(string $exprString, Expr $node): Type
+	{
+		foreach ($this->expressionTypeResolverExtensionRegistry->getExtensions() as $extension) {
+			$type = $extension->getType($node, $this);
+			if ($type !== null) {
+				return $type;
+			}
+		}
+
+		if ($node instanceof Expr\Exit_ || $node instanceof Expr\Throw_) {
+			return new NonAcceptingNeverType();
+		}
+
+		if (!$node instanceof Variable && $this->hasExpressionType($node)->yes()) {
+			return $this->expressionTypes[$exprString]->getType();
+		}
+
+		if ($node instanceof AlwaysRememberedExpr) {
+			return $node->getExprType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\Smaller) {
+			return $this->getType($node->left)->isSmallerThan($this->getType($node->right), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\SmallerOrEqual) {
+			return $this->getType($node->left)->isSmallerThanOrEqual($this->getType($node->right), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\Greater) {
+			return $this->getType($node->right)->isSmallerThan($this->getType($node->left), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\GreaterOrEqual) {
+			return $this->getType($node->right)->isSmallerThanOrEqual($this->getType($node->left), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\Equal) {
+			if (
+				$node->left instanceof Variable
+				&& is_string($node->left->name)
+				&& $node->right instanceof Variable
+				&& is_string($node->right->name)
+				&& $node->left->name === $node->right->name
+			) {
+				return new ConstantBooleanType(true);
+			}
+
+			$leftType = $this->getType($node->left);
+			$rightType = $this->getType($node->right);
+
+			return $this->initializerExprTypeResolver->resolveEqualType($leftType, $rightType)->type;
+		}
+
+		if ($node instanceof Expr\BinaryOp\NotEqual) {
+			return $this->getType(new Expr\BooleanNot(new BinaryOp\Equal($node->left, $node->right)));
+		}
+
+		if ($node instanceof Expr\Empty_) {
+			$result = $this->issetCheck($node->expr, static function (Type $type): ?bool {
+				$isNull = $type->isNull();
+				$isFalsey = $type->toBoolean()->isFalse();
+				if ($isNull->maybe()) {
+					return null;
+				}
+				if ($isFalsey->maybe()) {
+					return null;
+				}
+
+				if ($isNull->yes()) {
+					return $isFalsey->no();
+				}
+
+				return !$isFalsey->yes();
+			});
+			if ($result === null) {
+				return new BooleanType();
+			}
+
+			return new ConstantBooleanType(!$result);
+		}
+
+		if ($node instanceof Node\Expr\BooleanNot) {
+			$exprBooleanType = $this->getType($node->expr)->toBoolean();
+			if ($exprBooleanType instanceof ConstantBooleanType) {
+				return new ConstantBooleanType(!$exprBooleanType->getValue());
+			}
+
+			return new BooleanType();
+		}
+
+		if ($node instanceof Node\Expr\BitwiseNot) {
+			return $this->initializerExprTypeResolver->getBitwiseNotType($node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if (
+			$node instanceof Node\Expr\BinaryOp\BooleanAnd
+			|| $node instanceof Node\Expr\BinaryOp\LogicalAnd
+		) {
+			$leftBooleanType = $this->getType($node->left)->toBoolean();
+			if ($leftBooleanType->isFalse()->yes()) {
+				return new ConstantBooleanType(false);
+			}
+
+			if ($this->getBooleanExpressionDepth($node->left) <= self::BOOLEAN_EXPRESSION_MAX_PROCESS_DEPTH) {
+				$noopCallback = static function (): void {
+				};
+				$leftResult = $this->nodeScopeResolver->processExprNode(new Node\Stmt\Expression($node->left), $node->left, $this, $noopCallback, ExpressionContext::createDeep());
+				$rightBooleanType = $leftResult->getTruthyScope()->getType($node->right)->toBoolean();
+			} else {
+				$rightBooleanType = $this->filterByTruthyValue($node->left)->getType($node->right)->toBoolean();
+			}
+
+			if ($rightBooleanType->isFalse()->yes()) {
+				return new ConstantBooleanType(false);
+			}
+
+			if (
+				$leftBooleanType->isTrue()->yes()
+				&& $rightBooleanType->isTrue()->yes()
+			) {
+				return new ConstantBooleanType(true);
+			}
+
+			return new BooleanType();
+		}
+
+		if (
+			$node instanceof Node\Expr\BinaryOp\BooleanOr
+			|| $node instanceof Node\Expr\BinaryOp\LogicalOr
+		) {
+			$leftBooleanType = $this->getType($node->left)->toBoolean();
+			if ($leftBooleanType->isTrue()->yes()) {
+				return new ConstantBooleanType(true);
+			}
+
+			if ($this->getBooleanExpressionDepth($node->left) <= self::BOOLEAN_EXPRESSION_MAX_PROCESS_DEPTH) {
+				$noopCallback = static function (): void {
+				};
+				$leftResult = $this->nodeScopeResolver->processExprNode(new Node\Stmt\Expression($node->left), $node->left, $this, $noopCallback, ExpressionContext::createDeep());
+				$rightBooleanType = $leftResult->getFalseyScope()->getType($node->right)->toBoolean();
+			} else {
+				$rightBooleanType = $this->filterByFalseyValue($node->left)->getType($node->right)->toBoolean();
+			}
+
+			if ($rightBooleanType->isTrue()->yes()) {
+				return new ConstantBooleanType(true);
+			}
+
+			if (
+				$leftBooleanType->isFalse()->yes()
+				&& $rightBooleanType->isFalse()->yes()
+			) {
+				return new ConstantBooleanType(false);
+			}
+
+			return new BooleanType();
+		}
+
+		if ($node instanceof Node\Expr\BinaryOp\LogicalXor) {
+			$leftBooleanType = $this->getType($node->left)->toBoolean();
+			$rightBooleanType = $this->getType($node->right)->toBoolean();
+
+			if (
+				$leftBooleanType instanceof ConstantBooleanType
+				&& $rightBooleanType instanceof ConstantBooleanType
+			) {
+				return new ConstantBooleanType(
+					$leftBooleanType->getValue() xor $rightBooleanType->getValue(),
+				);
+			}
+
+			return new BooleanType();
+		}
+
+		if ($node instanceof Expr\BinaryOp\Identical) {
+			return $this->richerScopeGetTypeHelper->getIdenticalResult($this, $node)->type;
+		}
+
+		if ($node instanceof Expr\BinaryOp\NotIdentical) {
+			return $this->richerScopeGetTypeHelper->getNotIdenticalResult($this, $node)->type;
+		}
+
+		if ($node instanceof Expr\Instanceof_) {
+			$expressionType = $this->getType($node->expr);
+			if (
+				$this->isInTrait()
+				&& TypeUtils::findThisType($expressionType) !== null
+			) {
+				return new BooleanType();
+			}
+			if ($expressionType instanceof NeverType) {
+				return new ConstantBooleanType(false);
+			}
+
+			$uncertainty = false;
+
+			if ($node->class instanceof Node\Name) {
+				$unresolvedClassName = $node->class->toString();
+				if (
+					strtolower($unresolvedClassName) === 'static'
+					&& $this->isInClass()
+				) {
+					$classType = new StaticType($this->getClassReflection());
+				} else {
+					$className = $this->resolveName($node->class);
+					$classType = new ObjectType($className);
+				}
+			} else {
+				$classType = $this->getType($node->class);
+				$classType = TypeTraverser::map($classType, static function (Type $type, callable $traverse) use (&$uncertainty): Type {
+					if ($type instanceof UnionType || $type instanceof IntersectionType) {
+						return $traverse($type);
+					}
+					if ($type->getObjectClassNames() !== []) {
+						$uncertainty = true;
+						return $type;
+					}
+					if ($type instanceof GenericClassStringType) {
+						$uncertainty = true;
+						return $type->getGenericType();
+					}
+					if ($type instanceof ConstantStringType) {
+						return new ObjectType($type->getValue());
+					}
+					return new MixedType();
+				});
+			}
+
+			if ($classType->isSuperTypeOf(new MixedType())->yes()) {
+				return new BooleanType();
+			}
+
+			$isSuperType = $classType->isSuperTypeOf($expressionType);
+
+			if ($isSuperType->no()) {
+				return new ConstantBooleanType(false);
+			} elseif ($isSuperType->yes() && !$uncertainty) {
+				return new ConstantBooleanType(true);
+			}
+
+			return new BooleanType();
+		}
+
+		if ($node instanceof Node\Expr\UnaryPlus) {
+			return $this->getType($node->expr)->toNumber();
+		}
+
+		if ($node instanceof Expr\ErrorSuppress
+			|| $node instanceof Expr\Assign
+		) {
+			return $this->getType($node->expr);
+		}
+
+		if ($node instanceof Node\Expr\UnaryMinus) {
+			return $this->initializerExprTypeResolver->getUnaryMinusType($node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\BinaryOp\Concat) {
+			return $this->initializerExprTypeResolver->getConcatType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Concat) {
+			return $this->initializerExprTypeResolver->getConcatType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\BitwiseAnd) {
+			return $this->initializerExprTypeResolver->getBitwiseAndType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\BitwiseAnd) {
+			return $this->initializerExprTypeResolver->getBitwiseAndType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\BitwiseOr) {
+			return $this->initializerExprTypeResolver->getBitwiseOrType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\BitwiseOr) {
+			return $this->initializerExprTypeResolver->getBitwiseOrType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\BitwiseXor) {
+			return $this->initializerExprTypeResolver->getBitwiseXorType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\BitwiseXor) {
+			return $this->initializerExprTypeResolver->getBitwiseXorType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\BinaryOp\Spaceship) {
+			return $this->initializerExprTypeResolver->getSpaceshipType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Div) {
+			return $this->initializerExprTypeResolver->getDivType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Div) {
+			return $this->initializerExprTypeResolver->getDivType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Mod) {
+			return $this->initializerExprTypeResolver->getModType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Mod) {
+			return $this->initializerExprTypeResolver->getModType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Plus) {
+			return $this->initializerExprTypeResolver->getPlusType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Plus) {
+			return $this->initializerExprTypeResolver->getPlusType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Minus) {
+			return $this->initializerExprTypeResolver->getMinusType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Minus) {
+			return $this->initializerExprTypeResolver->getMinusType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Mul) {
+			return $this->initializerExprTypeResolver->getMulType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Mul) {
+			return $this->initializerExprTypeResolver->getMulType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\Pow) {
+			return $this->initializerExprTypeResolver->getPowType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\Pow) {
+			return $this->initializerExprTypeResolver->getPowType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\ShiftLeft) {
+			return $this->initializerExprTypeResolver->getShiftLeftType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\ShiftLeft) {
+			return $this->initializerExprTypeResolver->getShiftLeftType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof BinaryOp\ShiftRight) {
+			return $this->initializerExprTypeResolver->getShiftRightType($node->left, $node->right, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\AssignOp\ShiftRight) {
+			return $this->initializerExprTypeResolver->getShiftRightType($node->var, $node->expr, fn (Expr $expr): Type => $this->getType($expr));
+		}
+
+		if ($node instanceof Expr\Clone_) {
+			return $this->getType($node->expr);
+		}
+
+		if ($node instanceof Node\Scalar\Int_) {
+			return $this->initializerExprTypeResolver->getType($node, InitializerExprContext::fromScope($this));
+		} elseif ($node instanceof String_) {
+			return $this->initializerExprTypeResolver->getType($node, InitializerExprContext::fromScope($this));
+		} elseif ($node instanceof Node\Scalar\InterpolatedString) {
+			$resultType = null;
+			foreach ($node->parts as $part) {
+				if ($part instanceof InterpolatedStringPart) {
+					$partType = new ConstantStringType($part->value);
+				} else {
+					$partType = $this->getType($part)->toString();
+				}
+				if ($resultType === null) {
+					$resultType = $partType;
+					continue;
+				}
+
+				$resultType = $this->initializerExprTypeResolver->resolveConcatType($resultType, $partType);
+			}
+
+			return $resultType ?? new ConstantStringType('');
+		} elseif ($node instanceof Node\Scalar\Float_) {
+			return $this->initializerExprTypeResolver->getType($node, InitializerExprContext::fromScope($this));
+		} elseif ($node instanceof Expr\CallLike && $node->isFirstClassCallable()) {
+			if ($node instanceof FuncCall) {
+				if ($node->name instanceof Name) {
+					if ($this->reflectionProvider->hasFunction($node->name, $this)) {
+						$function = $this->reflectionProvider->getFunction($node->name, $this);
+						return $this->createFirstClassCallable(
+							$function,
+							$function->getVariants(),
+						);
+					}
+
+					return new ObjectType(Closure::class);
+				}
+
+				$callableType = $this->getType($node->name);
+				if (!$callableType->isCallable()->yes()) {
+					return new ObjectType(Closure::class);
+				}
+
+				return $this->createFirstClassCallable(
+					null,
+					$callableType->getCallableParametersAcceptors($this),
+				);
+			}
+
+			if ($node instanceof MethodCall) {
+				if (!$node->name instanceof Node\Identifier) {
+					return new ObjectType(Closure::class);
+				}
+
+				$varType = $this->getType($node->var);
+				$method = $this->getMethodReflection($varType, $node->name->toString());
+				if ($method === null) {
+					return new ObjectType(Closure::class);
+				}
+
+				return $this->createFirstClassCallable(
+					$method,
+					$method->getVariants(),
+				);
+			}
+
+			if ($node instanceof Expr\StaticCall) {
+				if (!$node->class instanceof Name) {
+					return new ObjectType(Closure::class);
+				}
+
+				if (!$node->name instanceof Node\Identifier) {
+					return new ObjectType(Closure::class);
+				}
+
+				$classType = $this->resolveTypeByNameWithLateStaticBinding($node->class, $node->name);
+				$methodName = $node->name->toString();
+				if (!$classType->hasMethod($methodName)->yes()) {
+					return new ObjectType(Closure::class);
+				}
+
+				$method = $classType->getMethod($methodName, $this);
+				return $this->createFirstClassCallable(
+					$method,
+					$method->getVariants(),
+				);
+			}
+
+			if ($node instanceof New_) {
+				return new ErrorType();
+			}
+
+			throw new ShouldNotHappenException();
+		} elseif ($node instanceof Expr\Closure || $node instanceof Expr\ArrowFunction) {
+			$parameters = [];
+			$isVariadic = false;
+			$firstOptionalParameterIndex = null;
+			foreach ($node->params as $i => $param) {
+				$isOptionalCandidate = $param->default !== null || $param->variadic;
+
+				if ($isOptionalCandidate) {
+					if ($firstOptionalParameterIndex === null) {
+						$firstOptionalParameterIndex = $i;
+					}
+				} else {
+					$firstOptionalParameterIndex = null;
+				}
+			}
+
+			foreach ($node->params as $i => $param) {
+				if ($param->variadic) {
+					$isVariadic = true;
+				}
+				if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+					throw new ShouldNotHappenException();
+				}
+				$parameters[] = new NativeParameterReflection(
+					$param->var->name,
+					$firstOptionalParameterIndex !== null && $i >= $firstOptionalParameterIndex,
+					$this->getFunctionType($param->type, $this->isParameterValueNullable($param), false),
+					$param->byRef
+						? PassedByReference::createCreatesNewVariable()
+						: PassedByReference::createNo(),
+					$param->variadic,
+					$param->default !== null ? $this->getType($param->default) : null,
+				);
+			}
+
+			$callableParameters = null;
+			$arrayMapArgs = $node->getAttribute(ArrayMapArgVisitor::ATTRIBUTE_NAME);
+			if ($arrayMapArgs !== null) {
+				$callableParameters = [];
+				foreach ($arrayMapArgs as $funcCallArg) {
+					$callableParameters[] = new DummyParameter('item', $this->getType($funcCallArg->value)->getIterableValueType(), false, PassedByReference::createNo(), false, null);
+				}
+			} else {
+				$inFunctionCallsStackCount = count($this->inFunctionCallsStack);
+				if ($inFunctionCallsStackCount > 0) {
+					[, $inParameter] = $this->inFunctionCallsStack[$inFunctionCallsStackCount - 1];
+					if ($inParameter !== null) {
+						$callableParameters = $this->nodeScopeResolver->createCallableParameters($this, $node, null, $inParameter->getType());
+					}
+				}
+			}
+
+			if ($node instanceof Expr\ArrowFunction) {
+				$arrowScope = $this->enterArrowFunctionWithoutReflection($node, $callableParameters);
+
+				if ($node->expr instanceof Expr\Yield_ || $node->expr instanceof Expr\YieldFrom) {
+					$yieldNode = $node->expr;
+
+					if ($yieldNode instanceof Expr\Yield_) {
+						if ($yieldNode->key === null) {
+							$keyType = new IntegerType();
+						} else {
+							$keyType = $arrowScope->getType($yieldNode->key);
+						}
+
+						if ($yieldNode->value === null) {
+							$valueType = new NullType();
+						} else {
+							$valueType = $arrowScope->getType($yieldNode->value);
+						}
+					} else {
+						$yieldFromType = $arrowScope->getType($yieldNode->expr);
+						$keyType = $arrowScope->getIterableKeyType($yieldFromType);
+						$valueType = $arrowScope->getIterableValueType($yieldFromType);
+					}
+
+					$returnType = new GenericObjectType(Generator::class, [
+						$keyType,
+						$valueType,
+						new MixedType(),
+						new VoidType(),
+					]);
+				} else {
+					$returnType = $arrowScope->getKeepVoidType($node->expr);
+					if ($node->returnType !== null) {
+						$nativeReturnType = $this->getFunctionType($node->returnType, false, false);
+						$returnType = self::intersectButNotNever($nativeReturnType, $returnType);
+					}
+				}
+
+				$arrowFunctionImpurePoints = [];
+				$invalidateExpressions = [];
+				$arrowFunctionExprResult = $this->nodeScopeResolver->processExprNode(
+					new Node\Stmt\Expression($node->expr),
+					$node->expr,
+					$arrowScope,
+					static function (Node $node, Scope $scope) use ($arrowScope, &$arrowFunctionImpurePoints, &$invalidateExpressions): void {
+						if ($scope->getAnonymousFunctionReflection() !== $arrowScope->getAnonymousFunctionReflection()) {
+							return;
+						}
+
+						if ($node instanceof InvalidateExprNode) {
+							$invalidateExpressions[] = $node;
+							return;
+						}
+
+						if (!$node instanceof PropertyAssignNode) {
+							return;
+						}
+
+						$arrowFunctionImpurePoints[] = new ImpurePoint(
+							$scope,
+							$node,
+							'propertyAssign',
+							'property assignment',
+							true,
+						);
+					},
+					ExpressionContext::createDeep(),
+				);
+				$throwPoints = $arrowFunctionExprResult->getThrowPoints();
+				$impurePoints = array_merge($arrowFunctionImpurePoints, $arrowFunctionExprResult->getImpurePoints());
+				$usedVariables = [];
+			} else {
+				$cachedTypes = $node->getAttribute('phpstanCachedTypes', []);
+				$cacheKey = $this->getClosureScopeCacheKey();
+				if (array_key_exists($cacheKey, $cachedTypes)) {
+					$cachedClosureData = $cachedTypes[$cacheKey];
+
+					return new ClosureType(
+						$parameters,
+						$cachedClosureData['returnType'],
+						$isVariadic,
+						TemplateTypeMap::createEmpty(),
+						TemplateTypeMap::createEmpty(),
+						TemplateTypeVarianceMap::createEmpty(),
+						[],
+						$cachedClosureData['throwPoints'],
+						$cachedClosureData['impurePoints'],
+						$cachedClosureData['invalidateExpressions'],
+						$cachedClosureData['usedVariables'],
+						TrinaryLogic::createYes(),
+					);
+				}
+				if (self::$resolveClosureTypeDepth >= 2) {
+					return new ClosureType(
+						$parameters,
+						$this->getFunctionType($node->returnType, false, false),
+						$isVariadic,
+					);
+				}
+
+				self::$resolveClosureTypeDepth++;
+
+				$closureScope = $this->enterAnonymousFunctionWithoutReflection($node, $callableParameters);
+				$closureReturnStatements = [];
+				$closureYieldStatements = [];
+				$onlyNeverExecutionEnds = null;
+				$closureImpurePoints = [];
+				$invalidateExpressions = [];
+
+				try {
+					$closureStatementResult = $this->nodeScopeResolver->processStmtNodes($node, $node->stmts, $closureScope, static function (Node $node, Scope $scope) use ($closureScope, &$closureReturnStatements, &$closureYieldStatements, &$onlyNeverExecutionEnds, &$closureImpurePoints, &$invalidateExpressions): void {
+						if ($scope->getAnonymousFunctionReflection() !== $closureScope->getAnonymousFunctionReflection()) {
+							return;
+						}
+
+						if ($node instanceof InvalidateExprNode) {
+							$invalidateExpressions[] = $node;
+							return;
+						}
+
+						if ($node instanceof PropertyAssignNode) {
+							$closureImpurePoints[] = new ImpurePoint(
+								$scope,
+								$node,
+								'propertyAssign',
+								'property assignment',
+								true,
+							);
+							return;
+						}
+
+						if ($node instanceof ExecutionEndNode) {
+							if ($node->getStatementResult()->isAlwaysTerminating()) {
+								foreach ($node->getStatementResult()->getExitPoints() as $exitPoint) {
+									if ($exitPoint->getStatement() instanceof Node\Stmt\Return_) {
+										$onlyNeverExecutionEnds = false;
+										continue;
+									}
+
+									if ($onlyNeverExecutionEnds === null) {
+										$onlyNeverExecutionEnds = true;
+									}
+
+									break;
+								}
+
+								if (count($node->getStatementResult()->getExitPoints()) === 0) {
+									if ($onlyNeverExecutionEnds === null) {
+										$onlyNeverExecutionEnds = true;
+									}
+								}
+							} else {
+								$onlyNeverExecutionEnds = false;
+							}
+
+							return;
+						}
+
+						if ($node instanceof Node\Stmt\Return_) {
+							$closureReturnStatements[] = [$node, $scope];
+						}
+
+						if (!$node instanceof Expr\Yield_ && !$node instanceof Expr\YieldFrom) {
+							return;
+						}
+
+						$closureYieldStatements[] = [$node, $scope];
+					}, StatementContext::createTopLevel());
+				} finally {
+					self::$resolveClosureTypeDepth--;
+				}
+
+				$throwPoints = $closureStatementResult->getThrowPoints();
+				$impurePoints = array_merge($closureImpurePoints, $closureStatementResult->getImpurePoints());
+
+				$returnTypes = [];
+				$hasNull = false;
+				foreach ($closureReturnStatements as [$returnNode, $returnScope]) {
+					if ($returnNode->expr === null) {
+						$hasNull = true;
+						continue;
+					}
+
+					$returnTypes[] = $returnScope->getType($returnNode->expr);
+				}
+
+				if (count($returnTypes) === 0) {
+					if ($onlyNeverExecutionEnds === true && !$hasNull) {
+						$returnType = new NonAcceptingNeverType();
+					} else {
+						$returnType = new VoidType();
+					}
+				} else {
+					if ($onlyNeverExecutionEnds === true) {
+						$returnTypes[] = new NonAcceptingNeverType();
+					}
+					if ($hasNull) {
+						$returnTypes[] = new NullType();
+					}
+					$returnType = TypeCombinator::union(...$returnTypes);
+				}
+
+				if (count($closureYieldStatements) > 0) {
+					$keyTypes = [];
+					$valueTypes = [];
+					foreach ($closureYieldStatements as [$yieldNode, $yieldScope]) {
+						if ($yieldNode instanceof Expr\Yield_) {
+							if ($yieldNode->key === null) {
+								$keyTypes[] = new IntegerType();
+							} else {
+								$keyTypes[] = $yieldScope->getType($yieldNode->key);
+							}
+
+							if ($yieldNode->value === null) {
+								$valueTypes[] = new NullType();
+							} else {
+								$valueTypes[] = $yieldScope->getType($yieldNode->value);
+							}
+
+							continue;
+						}
+
+						$yieldFromType = $yieldScope->getType($yieldNode->expr);
+						$keyTypes[] = $yieldScope->getIterableKeyType($yieldFromType);
+						$valueTypes[] = $yieldScope->getIterableValueType($yieldFromType);
+					}
+
+					$returnType = new GenericObjectType(Generator::class, [
+						TypeCombinator::union(...$keyTypes),
+						TypeCombinator::union(...$valueTypes),
+						new MixedType(),
+						$returnType,
+					]);
+				} else {
+					if ($node->returnType !== null) {
+						$nativeReturnType = $this->getFunctionType($node->returnType, false, false);
+						$returnType = self::intersectButNotNever($nativeReturnType, $returnType);
+					}
+				}
+
+				$usedVariables = [];
+				foreach ($node->uses as $use) {
+					if (!is_string($use->var->name)) {
+						continue;
+					}
+
+					$usedVariables[] = $use->var->name;
+				}
+
+				foreach ($node->uses as $use) {
+					if (!$use->byRef) {
+						continue;
+					}
+
+					$impurePoints[] = new ImpurePoint(
+						$this,
+						$node,
+						'functionCall',
+						'call to a Closure with by-ref use',
+						true,
+					);
+					break;
+				}
+			}
+
+			foreach ($parameters as $parameter) {
+				if ($parameter->passedByReference()->no()) {
+					continue;
+				}
+
+				$impurePoints[] = new ImpurePoint(
+					$this,
+					$node,
+					'functionCall',
+					'call to a Closure with by-ref parameter',
+					true,
+				);
+			}
+
+			$throwPointsForClosureType = array_map(static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit() ? SimpleThrowPoint::createExplicit($throwPoint->getType(), $throwPoint->canContainAnyThrowable()) : SimpleThrowPoint::createImplicit(), $throwPoints);
+			$impurePointsForClosureType = array_map(static fn (ImpurePoint $impurePoint) => new SimpleImpurePoint($impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain()), $impurePoints);
+
+			$cachedTypes = $node->getAttribute('phpstanCachedTypes', []);
+			$cachedTypes[$this->getClosureScopeCacheKey()] = [
+				'returnType' => $returnType,
+				'throwPoints' => $throwPointsForClosureType,
+				'impurePoints' => $impurePointsForClosureType,
+				'invalidateExpressions' => $invalidateExpressions,
+				'usedVariables' => $usedVariables,
+			];
+			$node->setAttribute('phpstanCachedTypes', $cachedTypes);
+
+			return new ClosureType(
+				$parameters,
+				$returnType,
+				$isVariadic,
+				TemplateTypeMap::createEmpty(),
+				TemplateTypeMap::createEmpty(),
+				TemplateTypeVarianceMap::createEmpty(),
+				[],
+				$throwPointsForClosureType,
+				$impurePointsForClosureType,
+				$invalidateExpressions,
+				$usedVariables,
+				TrinaryLogic::createYes(),
+			);
+		} elseif ($node instanceof New_) {
+			if ($node->class instanceof Name) {
+				$type = $this->exactInstantiation($node, $node->class->toString());
+				if ($type !== null) {
+					return $type;
+				}
+
+				$lowercasedClassName = strtolower($node->class->toString());
+				if ($lowercasedClassName === 'static') {
+					if (!$this->isInClass()) {
+						return new ErrorType();
+					}
+
+					return new StaticType($this->getClassReflection());
+				}
+				if ($lowercasedClassName === 'parent') {
+					return new NonexistentParentClassType();
+				}
+
+				return new ObjectType($node->class->toString());
+			}
+			if ($node->class instanceof Node\Stmt\Class_) {
+				$anonymousClassReflection = $this->reflectionProvider->getAnonymousClassReflection($node->class, $this);
+
+				return new ObjectType($anonymousClassReflection->getName());
+			}
+
+			$exprType = $this->getType($node->class);
+			return $exprType->getObjectTypeOrClassStringObjectType();
+
+		} elseif ($node instanceof Array_) {
+			return $this->initializerExprTypeResolver->getArrayType($node, fn (Expr $expr): Type => $this->getType($expr));
+		} elseif ($node instanceof Int_) {
+			return $this->getType($node->expr)->toInteger();
+		} elseif ($node instanceof Bool_) {
+			return $this->getType($node->expr)->toBoolean();
+		} elseif ($node instanceof Double) {
+			return $this->getType($node->expr)->toFloat();
+		} elseif ($node instanceof Node\Expr\Cast\String_) {
+			return $this->getType($node->expr)->toString();
+		} elseif ($node instanceof Node\Expr\Cast\Array_) {
+			return $this->getType($node->expr)->toArray();
+		} elseif ($node instanceof Node\Scalar\MagicConst) {
+			return $this->initializerExprTypeResolver->getType($node, InitializerExprContext::fromScope($this));
+		} elseif ($node instanceof Object_) {
+			$castToObject = static function (Type $type): Type {
+				$constantArrays = $type->getConstantArrays();
+				if (count($constantArrays) > 0) {
+					$objects = [];
+					foreach ($constantArrays as $constantArray) {
+						$properties = [];
+						$optionalProperties = [];
+						foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+							if (!$keyType instanceof ConstantStringType) {
+								// an object with integer properties is >weird<
+								continue;
+							}
+							$valueType = $constantArray->getValueTypes()[$i];
+							$optional = $constantArray->isOptionalKey($i);
+							if ($optional) {
+								$optionalProperties[] = $keyType->getValue();
+							}
+							$properties[$keyType->getValue()] = $valueType;
+						}
+
+						$objects[] = TypeCombinator::intersect(new ObjectShapeType($properties, $optionalProperties), new ObjectType(stdClass::class));
+					}
+
+					return TypeCombinator::union(...$objects);
+				}
+				if ($type->isObject()->yes()) {
+					return $type;
+				}
+
+				return new ObjectType('stdClass');
+			};
+
+			$exprType = $this->getType($node->expr);
+			if ($exprType instanceof UnionType) {
+				return TypeCombinator::union(...array_map($castToObject, $exprType->getTypes()));
+			}
+
+			return $castToObject($exprType);
+		} elseif ($node instanceof Unset_) {
+			return new NullType();
+		} elseif ($node instanceof Expr\PostInc || $node instanceof Expr\PostDec) {
+			return $this->getType($node->var);
+		} elseif ($node instanceof Expr\PreInc || $node instanceof Expr\PreDec) {
+			$varType = $this->getType($node->var);
+			$varScalars = $varType->getConstantScalarValues();
+
+			if (count($varScalars) > 0) {
+				$newTypes = [];
+
+				foreach ($varScalars as $varValue) {
+					if ($node instanceof Expr\PreInc) {
+						if (!is_bool($varValue)) {
+							++$varValue;
+						}
+					} elseif (is_numeric($varValue)) {
+						--$varValue;
+					}
+
+					$newTypes[] = $this->getTypeFromValue($varValue);
+				}
+				return TypeCombinator::union(...$newTypes);
+			} elseif ($varType->isString()->yes()) {
+				if ($varType->isLiteralString()->yes()) {
+					return new IntersectionType([
+						new StringType(),
+						new AccessoryLiteralStringType(),
+					]);
+				}
+
+				if ($varType->isNumericString()->yes()) {
+					return new BenevolentUnionType([
+						new IntegerType(),
+						new FloatType(),
+					]);
+				}
+
+				return new BenevolentUnionType([
+					new StringType(),
+					new IntegerType(),
+					new FloatType(),
+				]);
+			}
+
+			if ($node instanceof Expr\PreInc) {
+				return $this->getType(new BinaryOp\Plus($node->var, new Node\Scalar\Int_(1)));
+			}
+
+			return $this->getType(new BinaryOp\Minus($node->var, new Node\Scalar\Int_(1)));
+		} elseif ($node instanceof Expr\Yield_) {
+			$functionReflection = $this->getFunction();
+			if ($functionReflection === null) {
+				return new MixedType();
+			}
+
+			$returnType = $functionReflection->getReturnType();
+			$generatorSendType = $returnType->getTemplateType(Generator::class, 'TSend');
+			if ($generatorSendType instanceof ErrorType) {
+				return new MixedType();
+			}
+
+			return $generatorSendType;
+		} elseif ($node instanceof Expr\YieldFrom) {
+			$yieldFromType = $this->getType($node->expr);
+			$generatorReturnType = $yieldFromType->getTemplateType(Generator::class, 'TReturn');
+			if ($generatorReturnType instanceof ErrorType) {
+				return new MixedType();
+			}
+
+			return $generatorReturnType;
+		} elseif ($node instanceof Expr\Match_) {
+			$cond = $node->cond;
+			$condType = $this->getType($cond);
+			$types = [];
+
+			$matchScope = $this;
+			$arms = $node->arms;
+			if ($condType->isEnum()->yes()) {
+				// enum match analysis would work even without this if branch
+				// but would be much slower
+				// this avoids using ObjectType::$subtractedType which is slow for huge enums
+				// because of repeated union type normalization
+				$enumCases = $condType->getEnumCases();
+				if (count($enumCases) > 0) {
+					$indexedEnumCases = [];
+					foreach ($enumCases as $enumCase) {
+						$indexedEnumCases[strtolower($enumCase->getClassName())][$enumCase->getEnumCaseName()] = $enumCase;
+					}
+					$unusedIndexedEnumCases = $indexedEnumCases;
+
+					foreach ($arms as $i => $arm) {
+						if ($arm->conds === null) {
+							continue;
+						}
+
+						$conditionCases = [];
+						foreach ($arm->conds as $armCond) {
+							if (!$armCond instanceof Expr\ClassConstFetch) {
+								continue 2;
+							}
+							if (!$armCond->class instanceof Name) {
+								continue 2;
+							}
+							if (!$armCond->name instanceof Node\Identifier) {
+								continue 2;
+							}
+							$fetchedClassName = $this->resolveName($armCond->class);
+							$loweredFetchedClassName = strtolower($fetchedClassName);
+							if (!array_key_exists($loweredFetchedClassName, $indexedEnumCases)) {
+								continue 2;
+							}
+
+							$caseName = $armCond->name->toString();
+							if (!array_key_exists($caseName, $indexedEnumCases[$loweredFetchedClassName])) {
+								continue 2;
+							}
+
+							$conditionCases[] = $indexedEnumCases[$loweredFetchedClassName][$caseName];
+							unset($unusedIndexedEnumCases[$loweredFetchedClassName][$caseName]);
+						}
+
+						$conditionCasesCount = count($conditionCases);
+						if ($conditionCasesCount === 0) {
+							throw new ShouldNotHappenException();
+						} elseif ($conditionCasesCount === 1) {
+							$conditionCaseType = $conditionCases[0];
+						} else {
+							$conditionCaseType = new UnionType($conditionCases);
+						}
+
+						$types[] = $matchScope->addTypeToExpression(
+							$cond,
+							$conditionCaseType,
+						)->getType($arm->body);
+						unset($arms[$i]);
+					}
+
+					$remainingCases = [];
+					foreach ($unusedIndexedEnumCases as $cases) {
+						foreach ($cases as $case) {
+							$remainingCases[] = $case;
+						}
+					}
+
+					$remainingCasesCount = count($remainingCases);
+					if ($remainingCasesCount === 0) {
+						$remainingType = new NeverType();
+					} elseif ($remainingCasesCount === 1) {
+						$remainingType = $remainingCases[0];
+					} else {
+						$remainingType = new UnionType($remainingCases);
+					}
+
+					$matchScope = $matchScope->addTypeToExpression($cond, $remainingType);
+				}
+			}
+
+			foreach ($arms as $arm) {
+				if ($arm->conds === null) {
+					if ($node->hasAttribute(self::KEEP_VOID_ATTRIBUTE_NAME)) {
+						$arm->body->setAttribute(self::KEEP_VOID_ATTRIBUTE_NAME, $node->getAttribute(self::KEEP_VOID_ATTRIBUTE_NAME));
+					}
+					$types[] = $matchScope->getType($arm->body);
+					continue;
+				}
+
+				if (count($arm->conds) === 0) {
+					throw new ShouldNotHappenException();
+				}
+
+				if (count($arm->conds) === 1) {
+					$filteringExpr = new BinaryOp\Identical($cond, $arm->conds[0]);
+				} else {
+					$items = [];
+					foreach ($arm->conds as $filteringExpr) {
+						$items[] = new Node\ArrayItem($filteringExpr);
+					}
+					$filteringExpr = new FuncCall(
+						new Name\FullyQualified('in_array'),
+						[
+							new Arg($cond),
+							new Arg(new Array_($items)),
+							new Arg(new ConstFetch(new Name\FullyQualified('true'))),
+						],
+					);
+				}
+
+				$filteringExprType = $matchScope->getType($filteringExpr);
+
+				if (!$filteringExprType->isFalse()->yes()) {
+					$truthyScope = $matchScope->filterByTruthyValue($filteringExpr);
+					if ($node->hasAttribute(self::KEEP_VOID_ATTRIBUTE_NAME)) {
+						$arm->body->setAttribute(self::KEEP_VOID_ATTRIBUTE_NAME, $node->getAttribute(self::KEEP_VOID_ATTRIBUTE_NAME));
+					}
+					$types[] = $truthyScope->getType($arm->body);
+				}
+
+				$matchScope = $matchScope->filterByFalseyValue($filteringExpr);
+			}
+
+			return TypeCombinator::union(...$types);
+		}
+
+		if ($node instanceof Expr\Isset_) {
+			$issetResult = true;
+			foreach ($node->vars as $var) {
+				$result = $this->issetCheck($var, static function (Type $type): ?bool {
+					$isNull = $type->isNull();
+					if ($isNull->maybe()) {
+						return null;
+					}
+
+					return !$isNull->yes();
+				});
+				if ($result !== null) {
+					if (!$result) {
+						return new ConstantBooleanType($result);
+					}
+
+					continue;
+				}
+
+				$issetResult = $result;
+			}
+
+			if ($issetResult === null) {
+				return new BooleanType();
+			}
+
+			return new ConstantBooleanType($issetResult);
+		}
+
+		if ($node instanceof Expr\AssignOp\Coalesce) {
+			return $this->getType(new BinaryOp\Coalesce($node->var, $node->expr, $node->getAttributes()));
+		}
+
+		if ($node instanceof Expr\BinaryOp\Coalesce) {
+			$issetLeftExpr = new Expr\Isset_([$node->left]);
+			$leftType = $this->filterByTruthyValue($issetLeftExpr)->getType($node->left);
+
+			$result = $this->issetCheck($node->left, static function (Type $type): ?bool {
+				$isNull = $type->isNull();
+				if ($isNull->maybe()) {
+					return null;
+				}
+
+				return !$isNull->yes();
+			});
+
+			if ($result !== null && $result !== false) {
+				return TypeCombinator::removeNull($leftType);
+			}
+
+			$rightType = $this->filterByFalseyValue($issetLeftExpr)->getType($node->right);
+
+			if ($result === null) {
+				return TypeCombinator::union(
+					TypeCombinator::removeNull($leftType),
+					$rightType,
+				);
+			}
+
+			return $rightType;
+		}
+
+		if ($node instanceof ConstFetch) {
+			$constName = (string) $node->name;
+			$loweredConstName = strtolower($constName);
+			if ($loweredConstName === 'true') {
+				return new ConstantBooleanType(true);
+			} elseif ($loweredConstName === 'false') {
+				return new ConstantBooleanType(false);
+			} elseif ($loweredConstName === 'null') {
+				return new NullType();
+			}
+
+			$namespacedName = null;
+			if (!$node->name->isFullyQualified() && $this->getNamespace() !== null) {
+				$namespacedName = new FullyQualified([$this->getNamespace(), $node->name->toString()]);
+			}
+			$globalName = new FullyQualified($node->name->toString());
+
+			foreach ([$namespacedName, $globalName] as $name) {
+				if ($name === null) {
+					continue;
+				}
+				$constFetch = new ConstFetch($name);
+				if ($this->hasExpressionType($constFetch)->yes()) {
+					return $this->constantResolver->resolveConstantType(
+						$name->toString(),
+						$this->expressionTypes[$this->getNodeKey($constFetch)]->getType(),
+					);
+				}
+			}
+
+			$constantType = $this->constantResolver->resolveConstant($node->name, $this);
+			if ($constantType !== null) {
+				return $constantType;
+			}
+
+			return new ErrorType();
+		} elseif ($node instanceof Node\Expr\ClassConstFetch && $node->name instanceof Node\Identifier) {
+			if ($this->hasExpressionType($node)->yes()) {
+				return $this->expressionTypes[$exprString]->getType();
+			}
+			return $this->initializerExprTypeResolver->getClassConstFetchTypeByReflection(
+				$node->class,
+				$node->name->name,
+				$this->isInClass() ? $this->getClassReflection() : null,
+				fn (Expr $expr): Type => $this->getType($expr),
+			);
+		}
+
+		if ($node instanceof Expr\Ternary) {
+			$noopCallback = static function (): void {
+			};
+			$condResult = $this->nodeScopeResolver->processExprNode(new Node\Stmt\Expression($node->cond), $node->cond, $this, $noopCallback, ExpressionContext::createDeep());
+			if ($node->if === null) {
+				$conditionType = $this->getType($node->cond);
+				$booleanConditionType = $conditionType->toBoolean();
+				if ($booleanConditionType->isTrue()->yes()) {
+					return $condResult->getTruthyScope()->getType($node->cond);
+				}
+
+				if ($booleanConditionType->isFalse()->yes()) {
+					return $condResult->getFalseyScope()->getType($node->else);
+				}
+
+				return TypeCombinator::union(
+					TypeCombinator::removeFalsey($condResult->getTruthyScope()->getType($node->cond)),
+					$condResult->getFalseyScope()->getType($node->else),
+				);
+			}
+
+			$booleanConditionType = $this->getType($node->cond)->toBoolean();
+			if ($booleanConditionType->isTrue()->yes()) {
+				return $condResult->getTruthyScope()->getType($node->if);
+			}
+
+			if ($booleanConditionType->isFalse()->yes()) {
+				return $condResult->getFalseyScope()->getType($node->else);
+			}
+
+			return TypeCombinator::union(
+				$condResult->getTruthyScope()->getType($node->if),
+				$condResult->getFalseyScope()->getType($node->else),
+			);
+		}
+
+		if ($node instanceof Variable && is_string($node->name)) {
+			if ($this->hasVariableType($node->name)->no()) {
+				return new ErrorType();
+			}
+
+			return $this->getVariableType($node->name);
+		}
+
+		if ($node instanceof Expr\ArrayDimFetch && $node->dim !== null) {
+			return $this->getNullsafeShortCircuitingType(
+				$node->var,
+				$this->getTypeFromArrayDimFetch(
+					$node,
+					$this->getType($node->dim),
+					$this->getType($node->var),
+				),
+			);
+		}
+
+		if ($node instanceof MethodCall && $node->name instanceof Node\Identifier) {
+			if ($this->nativeTypesPromoted) {
+				$typeCallback = function () use ($node): Type {
+					$methodReflection = $this->getMethodReflection(
+						$this->getNativeType($node->var),
+						$node->name->name,
+					);
+					if ($methodReflection === null) {
+						return new ErrorType();
+					}
+
+					return ParametersAcceptorSelector::combineAcceptors($methodReflection->getVariants())->getNativeReturnType();
+				};
+
+				return $this->getNullsafeShortCircuitingType($node->var, $typeCallback());
+			}
+
+			$typeCallback = function () use ($node): Type {
+				$returnType = $this->methodCallReturnType(
+					$this->getType($node->var),
+					$node->name->name,
+					$node,
+				);
+				if ($returnType === null) {
+					return new ErrorType();
+				}
+				return $returnType;
+			};
+
+			return $this->getNullsafeShortCircuitingType($node->var, $typeCallback());
+		}
+
+		if ($node instanceof Expr\NullsafeMethodCall) {
+			$varType = $this->getType($node->var);
+			if ($varType->isNull()->yes()) {
+				return new NullType();
+			}
+			if (!TypeCombinator::containsNull($varType)) {
+				return $this->getType(new MethodCall($node->var, $node->name, $node->args));
+			}
+
+			return TypeCombinator::union(
+				$this->filterByTruthyValue(new BinaryOp\NotIdentical($node->var, new ConstFetch(new Name('null'))))
+					->getType(new MethodCall($node->var, $node->name, $node->args)),
+				new NullType(),
+			);
+		}
+
+		if ($node instanceof Expr\StaticCall && $node->name instanceof Node\Identifier) {
+			if ($this->nativeTypesPromoted) {
+				$typeCallback = function () use ($node): Type {
+					if ($node->class instanceof Name) {
+						$staticMethodCalledOnType = $this->resolveTypeByNameWithLateStaticBinding($node->class, $node->name);
+					} else {
+						$staticMethodCalledOnType = $this->getNativeType($node->class);
+					}
+					$methodReflection = $this->getMethodReflection(
+						$staticMethodCalledOnType,
+						$node->name->name,
+					);
+					if ($methodReflection === null) {
+						return new ErrorType();
+					}
+
+					return ParametersAcceptorSelector::combineAcceptors($methodReflection->getVariants())->getNativeReturnType();
+				};
+
+				$callType = $typeCallback();
+				if ($node->class instanceof Expr) {
+					return $this->getNullsafeShortCircuitingType($node->class, $callType);
+				}
+
+				return $callType;
+			}
+
+			$typeCallback = function () use ($node): Type {
+				if ($node->class instanceof Name) {
+					$staticMethodCalledOnType = $this->resolveTypeByNameWithLateStaticBinding($node->class, $node->name);
+				} else {
+					$staticMethodCalledOnType = TypeCombinator::removeNull($this->getType($node->class))->getObjectTypeOrClassStringObjectType();
+				}
+
+				$returnType = $this->methodCallReturnType(
+					$staticMethodCalledOnType,
+					$node->name->toString(),
+					$node,
+				);
+				if ($returnType === null) {
+					return new ErrorType();
+				}
+				return $returnType;
+			};
+
+			$callType = $typeCallback();
+			if ($node->class instanceof Expr) {
+				return $this->getNullsafeShortCircuitingType($node->class, $callType);
+			}
+
+			return $callType;
+		}
+
+		if ($node instanceof PropertyFetch && $node->name instanceof Node\Identifier) {
+			if ($this->nativeTypesPromoted) {
+				$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($node, $this);
+				if ($propertyReflection === null) {
+					return new ErrorType();
+				}
+
+				if (!$propertyReflection->hasNativeType()) {
+					return new MixedType();
+				}
+
+				$nativeType = $propertyReflection->getNativeType();
+
+				return $this->getNullsafeShortCircuitingType($node->var, $nativeType);
+			}
+
+			$typeCallback = function () use ($node): Type {
+				$returnType = $this->propertyFetchType(
+					$this->getType($node->var),
+					$node->name->name,
+					$node,
+				);
+				if ($returnType === null) {
+					return new ErrorType();
+				}
+				return $returnType;
+			};
+
+			return $this->getNullsafeShortCircuitingType($node->var, $typeCallback());
+		}
+
+		if ($node instanceof Expr\NullsafePropertyFetch) {
+			$varType = $this->getType($node->var);
+			if ($varType->isNull()->yes()) {
+				return new NullType();
+			}
+			if (!TypeCombinator::containsNull($varType)) {
+				return $this->getType(new PropertyFetch($node->var, $node->name));
+			}
+
+			return TypeCombinator::union(
+				$this->filterByTruthyValue(new BinaryOp\NotIdentical($node->var, new ConstFetch(new Name('null'))))
+					->getType(new PropertyFetch($node->var, $node->name)),
+				new NullType(),
+			);
+		}
+
+		if (
+			$node instanceof Expr\StaticPropertyFetch
+			&& $node->name instanceof Node\VarLikeIdentifier
+		) {
+			if ($this->nativeTypesPromoted) {
+				$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($node, $this);
+				if ($propertyReflection === null) {
+					return new ErrorType();
+				}
+				if (!$propertyReflection->hasNativeType()) {
+					return new MixedType();
+				}
+
+				$nativeType = $propertyReflection->getNativeType();
+
+				if ($node->class instanceof Expr) {
+					return $this->getNullsafeShortCircuitingType($node->class, $nativeType);
+				}
+
+				return $nativeType;
+			}
+
+			$typeCallback = function () use ($node): Type {
+				if ($node->class instanceof Name) {
+					$staticPropertyFetchedOnType = $this->resolveTypeByName($node->class);
+				} else {
+					$staticPropertyFetchedOnType = TypeCombinator::removeNull($this->getType($node->class))->getObjectTypeOrClassStringObjectType();
+				}
+
+				$returnType = $this->propertyFetchType(
+					$staticPropertyFetchedOnType,
+					$node->name->toString(),
+					$node,
+				);
+				if ($returnType === null) {
+					return new ErrorType();
+				}
+				return $returnType;
+			};
+
+			$fetchType = $typeCallback();
+			if ($node->class instanceof Expr) {
+				return $this->getNullsafeShortCircuitingType($node->class, $fetchType);
+			}
+
+			return $fetchType;
+		}
+
+		if ($node instanceof FuncCall) {
+			if ($node->name instanceof Expr) {
+				$calledOnType = $this->getType($node->name);
+				if ($calledOnType->isCallable()->no()) {
+					return new ErrorType();
+				}
+
+				return ParametersAcceptorSelector::selectFromArgs(
+					$this,
+					$node->getArgs(),
+					$calledOnType->getCallableParametersAcceptors($this),
+					null,
+				)->getReturnType();
+			}
+
+			if (!$this->reflectionProvider->hasFunction($node->name, $this)) {
+				return new ErrorType();
+			}
+
+			$functionReflection = $this->reflectionProvider->getFunction($node->name, $this);
+			if ($this->nativeTypesPromoted) {
+				return ParametersAcceptorSelector::combineAcceptors($functionReflection->getVariants())->getNativeReturnType();
+			}
+
+			if ($functionReflection->getName() === 'call_user_func') {
+				$result = ArgumentsNormalizer::reorderCallUserFuncArguments($node, $this);
+				if ($result !== null) {
+					[, $innerFuncCall] = $result;
+
+					return $this->getType($innerFuncCall);
+				}
+			}
+
+			$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+				$this,
+				$node->getArgs(),
+				$functionReflection->getVariants(),
+				$functionReflection->getNamedArgumentsVariants(),
+			);
+			$normalizedNode = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+			if ($normalizedNode !== null) {
+				foreach ($this->dynamicReturnTypeExtensionRegistry->getDynamicFunctionReturnTypeExtensions() as $dynamicFunctionReturnTypeExtension) {
+					if (!$dynamicFunctionReturnTypeExtension->isFunctionSupported($functionReflection)) {
+						continue;
+					}
+
+					$resolvedType = $dynamicFunctionReturnTypeExtension->getTypeFromFunctionCall(
+						$functionReflection,
+						$normalizedNode,
+						$this,
+					);
+					if ($resolvedType !== null) {
+						return $resolvedType;
+					}
+				}
+			}
+
+			return $this->transformVoidToNull($parametersAcceptor->getReturnType(), $node);
+		}
+
+		return new MixedType();
+	}
+
+	private function getNullsafeShortCircuitingType(Expr $expr, Type $type): Type
+	{
+		if ($expr instanceof Expr\NullsafePropertyFetch || $expr instanceof Expr\NullsafeMethodCall) {
+			$varType = $this->getType($expr->var);
+			if (TypeCombinator::containsNull($varType)) {
+				return TypeCombinator::addNull($type);
+			}
+
+			return $type;
+		}
+
+		if ($expr instanceof Expr\ArrayDimFetch) {
+			return $this->getNullsafeShortCircuitingType($expr->var, $type);
+		}
+
+		if ($expr instanceof PropertyFetch) {
+			return $this->getNullsafeShortCircuitingType($expr->var, $type);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			return $this->getNullsafeShortCircuitingType($expr->class, $type);
+		}
+
+		if ($expr instanceof MethodCall) {
+			return $this->getNullsafeShortCircuitingType($expr->var, $type);
+		}
+
+		if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
+			return $this->getNullsafeShortCircuitingType($expr->class, $type);
+		}
+
+		return $type;
+	}
+
+	private function transformVoidToNull(Type $type, Node $node): Type
+	{
+		if ($node->getAttribute(self::KEEP_VOID_ATTRIBUTE_NAME) === true) {
+			return $type;
+		}
+
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse): Type {
+			if ($type instanceof UnionType || $type instanceof IntersectionType) {
+				return $traverse($type);
+			}
+
+			if ($type->isVoid()->yes()) {
+				return new NullType();
+			}
+
+			return $type;
+		});
+	}
+
+	/**
+	 * @param callable(Type): ?bool $typeCallback
+	 */
+	public function issetCheck(Expr $expr, callable $typeCallback, ?bool $result = null): ?bool
+	{
+		// mirrored in PHPStan\Rules\IssetCheck
+		if ($expr instanceof Node\Expr\Variable && is_string($expr->name)) {
+			$hasVariable = $this->hasVariableType($expr->name);
+			if ($hasVariable->maybe()) {
+				return null;
+			}
+
+			if ($result === null) {
+				if ($hasVariable->yes()) {
+					if ($expr->name === '_SESSION') {
+						return null;
+					}
+
+					return $typeCallback($this->getVariableType($expr->name));
+				}
+
+				return false;
+			}
+
+			return $result;
+		} elseif ($expr instanceof Node\Expr\ArrayDimFetch && $expr->dim !== null) {
+			$type = $this->getType($expr->var);
+			if (!$type->isOffsetAccessible()->yes()) {
+				return $result ?? $this->issetCheckUndefined($expr->var);
+			}
+
+			$dimType = $this->getType($expr->dim);
+			$hasOffsetValue = $type->hasOffsetValueType($dimType);
+			if ($hasOffsetValue->no()) {
+				return false;
+			}
+
+			// If offset cannot be null, store this error message and see if one of the earlier offsets is.
+			// E.g. $array['a']['b']['c'] ?? null; is a valid coalesce if a OR b or C might be null.
+			if ($hasOffsetValue->yes()) {
+				$result = $typeCallback($type->getOffsetValueType($dimType));
+
+				if ($result !== null) {
+					return $this->issetCheck($expr->var, $typeCallback, $result);
+				}
+			}
+
+			// Has offset, it is nullable
+			return null;
+
+		} elseif ($expr instanceof Node\Expr\PropertyFetch || $expr instanceof Node\Expr\StaticPropertyFetch) {
+
+			$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($expr, $this);
+
+			if ($propertyReflection === null) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->issetCheckUndefined($expr->var);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->issetCheckUndefined($expr->class);
+				}
+
+				return null;
+			}
+
+			if (!$propertyReflection->isNative()) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->issetCheckUndefined($expr->var);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->issetCheckUndefined($expr->class);
+				}
+
+				return null;
+			}
+
+			$nativeType = $propertyReflection->getNativeType();
+			if (!$nativeType instanceof MixedType) {
+				if (!$this->hasExpressionType($expr)->yes()) {
+					if ($expr instanceof Node\Expr\PropertyFetch) {
+						return $this->issetCheckUndefined($expr->var);
+					}
+
+					if ($expr->class instanceof Expr) {
+						return $this->issetCheckUndefined($expr->class);
+					}
+
+					return null;
+				}
+			}
+
+			if ($result !== null) {
+				return $result;
+			}
+
+			$result = $typeCallback($propertyReflection->getWritableType());
+			if ($result !== null) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->issetCheck($expr->var, $typeCallback, $result);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->issetCheck($expr->class, $typeCallback, $result);
+				}
+			}
+
+			return $result;
+		}
+
+		if ($result !== null) {
+			return $result;
+		}
+
+		return $typeCallback($this->getType($expr));
+	}
+
+	private function issetCheckUndefined(Expr $expr): ?bool
+	{
+		if ($expr instanceof Node\Expr\Variable && is_string($expr->name)) {
+			$hasVariable = $this->hasVariableType($expr->name);
+			if (!$hasVariable->no()) {
+				return null;
+			}
+
+			return false;
+		}
+
+		if ($expr instanceof Node\Expr\ArrayDimFetch && $expr->dim !== null) {
+			$type = $this->getType($expr->var);
+			if (!$type->isOffsetAccessible()->yes()) {
+				return $this->issetCheckUndefined($expr->var);
+			}
+
+			$dimType = $this->getType($expr->dim);
+			$hasOffsetValue = $type->hasOffsetValueType($dimType);
+
+			if (!$hasOffsetValue->no()) {
+				return $this->issetCheckUndefined($expr->var);
+			}
+
+			return false;
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			return $this->issetCheckUndefined($expr->var);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			return $this->issetCheckUndefined($expr->class);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param ParametersAcceptor[] $variants
+	 */
+	private function createFirstClassCallable(
+		FunctionReflection|ExtendedMethodReflection|null $function,
+		array $variants,
+	): Type
+	{
+		$closureTypes = [];
+
+		foreach ($variants as $variant) {
+			$returnType = $variant->getReturnType();
+			if ($variant instanceof ExtendedParametersAcceptor) {
+				$returnType = $this->nativeTypesPromoted ? $variant->getNativeReturnType() : $returnType;
+			}
+
+			$templateTags = [];
+			foreach ($variant->getTemplateTypeMap()->getTypes() as $templateType) {
+				if (!$templateType instanceof TemplateType) {
+					continue;
+				}
+				$templateTags[$templateType->getName()] = new TemplateTag(
+					$templateType->getName(),
+					$templateType->getBound(),
+					$templateType->getDefault(),
+					$templateType->getVariance(),
+				);
+			}
+
+			$throwPoints = [];
+			$impurePoints = [];
+			$acceptsNamedArguments = TrinaryLogic::createYes();
+			if ($variant instanceof CallableParametersAcceptor) {
+				$throwPoints = $variant->getThrowPoints();
+				$impurePoints = $variant->getImpurePoints();
+				$acceptsNamedArguments = $variant->acceptsNamedArguments();
+			} elseif ($function !== null) {
+				$returnTypeForThrow = $variant->getReturnType();
+				$throwType = $function->getThrowType();
+				if ($throwType === null) {
+					if ($returnTypeForThrow instanceof NeverType && $returnTypeForThrow->isExplicit()) {
+						$throwType = new ObjectType(Throwable::class);
+					}
+				}
+
+				if ($throwType !== null) {
+					if (!$throwType->isVoid()->yes()) {
+						$throwPoints[] = SimpleThrowPoint::createExplicit($throwType, true);
+					}
+				} else {
+					if (!(new ObjectType(Throwable::class))->isSuperTypeOf($returnTypeForThrow)->yes()) {
+						$throwPoints[] = SimpleThrowPoint::createImplicit();
+					}
+				}
+
+				$impurePoint = SimpleImpurePoint::createFromVariant($function, $variant);
+				if ($impurePoint !== null) {
+					$impurePoints[] = $impurePoint;
+				}
+
+				$acceptsNamedArguments = $function->acceptsNamedArguments();
+			}
+
+			$parameters = $variant->getParameters();
+			$closureTypes[] = new ClosureType(
+				$parameters,
+				$returnType,
+				$variant->isVariadic(),
+				$variant->getTemplateTypeMap(),
+				$variant->getResolvedTemplateTypeMap(),
+				$variant instanceof ExtendedParametersAcceptor ? $variant->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+				$templateTags,
+				$throwPoints,
+				$impurePoints,
+				[],
+				[],
+				$acceptsNamedArguments,
+			);
+		}
+
+		return TypeCombinator::union(...$closureTypes);
+	}
+
+	/** @api */
+	public function getNativeType(Expr $expr): Type
+	{
+		return $this->promoteNativeTypes()->getType($expr);
+	}
+
+	public function getKeepVoidType(Expr $node): Type
+	{
+		$clonedNode = clone $node;
+		$clonedNode->setAttribute(self::KEEP_VOID_ATTRIBUTE_NAME, true);
+
+		return $this->getType($clonedNode);
+	}
+
+	public function doNotTreatPhpDocTypesAsCertain(): Scope
+	{
+		return $this->promoteNativeTypes();
+	}
+
+	private function promoteNativeTypes(): self
+	{
+		if ($this->nativeTypesPromoted) {
+			return $this;
+		}
+
+		if ($this->scopeWithPromotedNativeTypes !== null) {
+			return $this->scopeWithPromotedNativeTypes;
+		}
+
+		return $this->scopeWithPromotedNativeTypes = $this->scopeFactory->create(
+			$this->context,
+			$this->declareStrictTypes,
+			$this->function,
+			$this->namespace,
+			$this->nativeExpressionTypes,
+			[],
+			[],
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			true,
+		);
+	}
+
+	/**
+	 * @param Node\Expr\PropertyFetch|Node\Expr\StaticPropertyFetch $propertyFetch
+	 */
+	public function hasPropertyNativeType($propertyFetch): bool
+	{
+		$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($propertyFetch, $this);
+		if ($propertyReflection === null) {
+			return false;
+		}
+
+		if (!$propertyReflection->isNative()) {
+			return false;
+		}
+
+		return $propertyReflection->hasNativeType();
+	}
+
+	private function getTypeFromArrayDimFetch(
+		Expr\ArrayDimFetch $arrayDimFetch,
+		Type $offsetType,
+		Type $offsetAccessibleType,
+	): Type
+	{
+		if ($arrayDimFetch->dim === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (!$offsetAccessibleType->isArray()->yes() && (new ObjectType(ArrayAccess::class))->isSuperTypeOf($offsetAccessibleType)->yes()) {
+			return $this->getType(
+				new MethodCall(
+					$arrayDimFetch->var,
+					new Node\Identifier('offsetGet'),
+					[
+						new Node\Arg($arrayDimFetch->dim),
+					],
+				),
+			);
+		}
+
+		return $offsetAccessibleType->getOffsetValueType($offsetType);
+	}
+
+	private function resolveExactName(Name $name): ?string
+	{
+		$originalClass = (string) $name;
+
+		switch (strtolower($originalClass)) {
+			case 'self':
+				if (!$this->isInClass()) {
+					return null;
+				}
+				return $this->getClassReflection()->getName();
+			case 'parent':
+				if (!$this->isInClass()) {
+					return null;
+				}
+				$currentClassReflection = $this->getClassReflection();
+				if ($currentClassReflection->getParentClass() !== null) {
+					return $currentClassReflection->getParentClass()->getName();
+				}
+				return null;
+			case 'static':
+				return null;
+		}
+
+		return $originalClass;
+	}
+
+	/** @api */
+	public function resolveName(Name $name): string
+	{
+		$originalClass = (string) $name;
+		if ($this->isInClass()) {
+			$lowerClass = strtolower($originalClass);
+			if (in_array($lowerClass, [
+				'self',
+				'static',
+			], true)) {
+				if ($this->inClosureBindScopeClasses !== [] && $this->inClosureBindScopeClasses !== ['static']) {
+					return $this->inClosureBindScopeClasses[0];
+				}
+				return $this->getClassReflection()->getName();
+			} elseif ($lowerClass === 'parent') {
+				$currentClassReflection = $this->getClassReflection();
+				if ($currentClassReflection->getParentClass() !== null) {
+					return $currentClassReflection->getParentClass()->getName();
+				}
+			}
+		}
+
+		return $originalClass;
+	}
+
+	/** @api */
+	public function resolveTypeByName(Name $name): TypeWithClassName
+	{
+		if ($name->toLowerString() === 'static' && $this->isInClass()) {
+			if ($this->inClosureBindScopeClasses !== [] && $this->inClosureBindScopeClasses !== ['static']) {
+				if ($this->reflectionProvider->hasClass($this->inClosureBindScopeClasses[0])) {
+					return new StaticType($this->reflectionProvider->getClass($this->inClosureBindScopeClasses[0]));
+				}
+			}
+
+			return new StaticType($this->getClassReflection());
+		}
+
+		$originalClass = $this->resolveName($name);
+		if ($this->isInClass()) {
+			if ($this->inClosureBindScopeClasses === [$originalClass]) {
+				if ($this->reflectionProvider->hasClass($originalClass)) {
+					return new ThisType($this->reflectionProvider->getClass($originalClass));
+				}
+				return new ObjectType($originalClass);
+			}
+
+			$thisType = new ThisType($this->getClassReflection());
+			$ancestor = $thisType->getAncestorWithClassName($originalClass);
+			if ($ancestor !== null) {
+				return $ancestor;
+			}
+		}
+
+		return new ObjectType($originalClass);
+	}
+
+	private function resolveTypeByNameWithLateStaticBinding(Name $class, Node\Identifier $name): TypeWithClassName
+	{
+		$classType = $this->resolveTypeByName($class);
+
+		if (
+			$classType instanceof StaticType
+			&& !in_array($class->toLowerString(), ['self', 'static', 'parent'], true)
+		) {
+			$methodReflectionCandidate = $this->getMethodReflection(
+				$classType,
+				$name->name,
+			);
+			if ($methodReflectionCandidate !== null && $methodReflectionCandidate->isStatic()) {
+				$classType = $classType->getStaticObjectType();
+			}
+		}
+
+		return $classType;
+	}
+
+	/**
+	 * @api
+	 * @param mixed $value
+	 */
+	public function getTypeFromValue($value): Type
+	{
+		return ConstantTypeHelper::getTypeFromValue($value);
+	}
+
+	/** @api */
+	public function hasExpressionType(Expr $node): TrinaryLogic
+	{
+		if ($node instanceof Variable && is_string($node->name)) {
+			return $this->hasVariableType($node->name);
+		}
+
+		$exprString = $this->getNodeKey($node);
+		if (!isset($this->expressionTypes[$exprString])) {
+			return TrinaryLogic::createNo();
+		}
+		return $this->expressionTypes[$exprString]->getCertainty();
+	}
+
+	/**
+	 * @param MethodReflection|FunctionReflection|null $reflection
+	 */
+	public function pushInFunctionCall($reflection, ?ParameterReflection $parameter): self
+	{
+		$stack = $this->inFunctionCallsStack;
+		$stack[] = [$reflection, $parameter];
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$stack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function popInFunctionCall(): self
+	{
+		$stack = $this->inFunctionCallsStack;
+		array_pop($stack);
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$stack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/** @api */
+	public function isInClassExists(string $className): bool
+	{
+		foreach ($this->inFunctionCallsStack as [$inFunctionCall]) {
+			if (!$inFunctionCall instanceof FunctionReflection) {
+				continue;
+			}
+
+			if (in_array($inFunctionCall->getName(), [
+				'class_exists',
+				'interface_exists',
+				'trait_exists',
+			], true)) {
+				return true;
+			}
+		}
+		$expr = new FuncCall(new FullyQualified('class_exists'), [
+			new Arg(new String_(ltrim($className, '\\'))),
+		]);
+
+		return $this->getType($expr)->isTrue()->yes();
+	}
+
+	public function getFunctionCallStack(): array
+	{
+		return array_values(array_filter(
+			array_map(static fn ($values) => $values[0], $this->inFunctionCallsStack),
+			static fn (FunctionReflection|MethodReflection|null $reflection) => $reflection !== null,
+		));
+	}
+
+	public function getFunctionCallStackWithParameters(): array
+	{
+		return array_values(array_filter(
+			$this->inFunctionCallsStack,
+			static fn ($item) => $item[0] !== null,
+		));
+	}
+
+	/** @api */
+	public function isInFunctionExists(string $functionName): bool
+	{
+		$expr = new FuncCall(new FullyQualified('function_exists'), [
+			new Arg(new String_(ltrim($functionName, '\\'))),
+		]);
+
+		return $this->getType($expr)->isTrue()->yes();
+	}
+
+	/** @api */
+	public function enterClass(ClassReflection $classReflection): self
+	{
+		$thisHolder = ExpressionTypeHolder::createYes(new Variable('this'), new ThisType($classReflection));
+		$constantTypes = $this->getConstantTypes();
+		$constantTypes['$this'] = $thisHolder;
+		$nativeConstantTypes = $this->getNativeConstantTypes();
+		$nativeConstantTypes['$this'] = $thisHolder;
+
+		return $this->scopeFactory->create(
+			$this->context->enterClass($classReflection),
+			$this->isDeclareStrictTypes(),
+			null,
+			$this->getNamespace(),
+			$constantTypes,
+			$nativeConstantTypes,
+			[],
+			[],
+			null,
+			true,
+			[],
+			[],
+			[],
+			false,
+			$classReflection->isAnonymous() ? $this : null,
+		);
+	}
+
+	public function enterTrait(ClassReflection $traitReflection): self
+	{
+		$namespace = null;
+		$traitName = $traitReflection->getName();
+		$traitNameParts = explode('\\', $traitName);
+		if (count($traitNameParts) > 1) {
+			$namespace = implode('\\', array_slice($traitNameParts, 0, -1));
+		}
+		return $this->scopeFactory->create(
+			$this->context->enterTrait($traitReflection),
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$namespace,
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			[],
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+		);
+	}
+
+	/**
+	 * @api
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $parameterOutTypes
+	 * @param array<string, bool> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 */
+	public function enterClassMethod(
+		Node\Stmt\ClassMethod $classMethod,
+		TemplateTypeMap $templateTypeMap,
+		array $phpDocParameterTypes,
+		?Type $phpDocReturnType,
+		?Type $throwType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		bool $isInternal,
+		bool $isFinal,
+		?bool $isPure = null,
+		bool $acceptsNamedArguments = true,
+		?Assertions $asserts = null,
+		?Type $selfOutType = null,
+		?string $phpDocComment = null,
+		array $parameterOutTypes = [],
+		array $immediatelyInvokedCallableParameters = [],
+		array $phpDocClosureThisTypeParameters = [],
+		bool $isConstructor = false,
+	): self
+	{
+		if (!$this->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $this->enterFunctionLike(
+			new PhpMethodFromParserNodeReflection(
+				$this->getClassReflection(),
+				$classMethod,
+				null,
+				$this->getFile(),
+				$templateTypeMap,
+				$this->getRealParameterTypes($classMethod),
+				array_map(fn (Type $type): Type => $this->transformStaticType(TemplateTypeHelper::toArgument($type)), $phpDocParameterTypes),
+				$this->getRealParameterDefaultValues($classMethod),
+				$this->getParameterAttributes($classMethod),
+				$this->transformStaticType($this->getFunctionType($classMethod->returnType, false, false)),
+				$phpDocReturnType !== null ? $this->transformStaticType(TemplateTypeHelper::toArgument($phpDocReturnType)) : null,
+				$throwType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$isInternal,
+				$isFinal,
+				$isPure,
+				$acceptsNamedArguments,
+				$asserts ?? Assertions::createEmpty(),
+				$selfOutType,
+				$phpDocComment,
+				array_map(fn (Type $type): Type => $this->transformStaticType(TemplateTypeHelper::toArgument($type)), $parameterOutTypes),
+				$immediatelyInvokedCallableParameters,
+				array_map(fn (Type $type): Type => $this->transformStaticType(TemplateTypeHelper::toArgument($type)), $phpDocClosureThisTypeParameters),
+				$isConstructor,
+				$this->attributeReflectionFactory->fromAttrGroups($classMethod->attrGroups, InitializerExprContext::fromStubParameter($this->getClassReflection()->getName(), $this->getFile(), $classMethod)),
+			),
+			!$classMethod->isStatic(),
+		);
+	}
+
+	/**
+	 * @param Type[] $phpDocParameterTypes
+	 */
+	public function enterPropertyHook(
+		Node\PropertyHook $hook,
+		string $propertyName,
+		Identifier|Name|ComplexType|null $nativePropertyTypeNode,
+		?Type $phpDocPropertyType,
+		array $phpDocParameterTypes,
+		?Type $throwType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		?string $phpDocComment,
+	): self
+	{
+		if (!$this->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$phpDocParameterTypes = array_map(fn (Type $type): Type => $this->transformStaticType(TemplateTypeHelper::toArgument($type)), $phpDocParameterTypes);
+
+		$hookName = $hook->name->toLowerString();
+		if ($hookName === 'set') {
+			if ($hook->params === []) {
+				$hook = clone $hook;
+				$hook->params = [
+					new Node\Param(new Variable('value'), null, $nativePropertyTypeNode),
+				];
+			}
+
+			$firstParam = $hook->params[0] ?? null;
+			if (
+				$firstParam !== null
+				&& $phpDocPropertyType !== null
+				&& $firstParam->var instanceof Variable
+				&& is_string($firstParam->var->name)
+			) {
+				$valueParamPhpDocType = $phpDocParameterTypes[$firstParam->var->name] ?? null;
+				if ($valueParamPhpDocType === null) {
+					$phpDocParameterTypes[$firstParam->var->name] = $this->transformStaticType(TemplateTypeHelper::toArgument($phpDocPropertyType));
+				}
+			}
+
+			$realReturnType = new VoidType();
+			$phpDocReturnType = null;
+		} elseif ($hookName === 'get') {
+			$realReturnType = $this->getFunctionType($nativePropertyTypeNode, false, false);
+			$phpDocReturnType = $phpDocPropertyType !== null ? $this->transformStaticType(TemplateTypeHelper::toArgument($phpDocPropertyType)) : null;
+		} else {
+			throw new ShouldNotHappenException();
+		}
+
+		$realParameterTypes = $this->getRealParameterTypes($hook);
+
+		return $this->enterFunctionLike(
+			new PhpMethodFromParserNodeReflection(
+				$this->getClassReflection(),
+				$hook,
+				$propertyName,
+				$this->getFile(),
+				TemplateTypeMap::createEmpty(),
+				$realParameterTypes,
+				$phpDocParameterTypes,
+				[],
+				$this->getParameterAttributes($hook),
+				$realReturnType,
+				$phpDocReturnType,
+				$throwType,
+				$deprecatedDescription,
+				$isDeprecated,
+				false,
+				false,
+				false,
+				true,
+				Assertions::createEmpty(),
+				null,
+				$phpDocComment,
+				[],
+				[],
+				[],
+				false,
+				$this->attributeReflectionFactory->fromAttrGroups($hook->attrGroups, InitializerExprContext::fromStubParameter($this->getClassReflection()->getName(), $this->getFile(), $hook)),
+			),
+			true,
+		);
+	}
+
+	private function transformStaticType(Type $type): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+			if (!$this->isInClass()) {
+				return $type;
+			}
+			if ($type instanceof StaticType) {
+				$classReflection = $this->getClassReflection();
+				$changedType = $type->changeBaseClass($classReflection);
+				if ($classReflection->isFinal() && !$type instanceof ThisType) {
+					$changedType = $changedType->getStaticObjectType();
+				}
+				return $traverse($changedType);
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	private function getRealParameterTypes(Node\FunctionLike $functionLike): array
+	{
+		$realParameterTypes = [];
+		foreach ($functionLike->getParams() as $parameter) {
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$realParameterTypes[$parameter->var->name] = $this->getFunctionType(
+				$parameter->type,
+				$this->isParameterValueNullable($parameter) && $parameter->flags === 0,
+				false,
+			);
+		}
+
+		return $realParameterTypes;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	private function getRealParameterDefaultValues(Node\FunctionLike $functionLike): array
+	{
+		$realParameterDefaultValues = [];
+		foreach ($functionLike->getParams() as $parameter) {
+			if ($parameter->default === null) {
+				continue;
+			}
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$realParameterDefaultValues[$parameter->var->name] = $this->getType($parameter->default);
+		}
+
+		return $realParameterDefaultValues;
+	}
+
+	/**
+	 * @return array<string, list<AttributeReflection>>
+	 */
+	private function getParameterAttributes(ClassMethod|Function_|PropertyHook $functionLike): array
+	{
+		$parameterAttributes = [];
+		$className = null;
+		if ($this->isInClass()) {
+			$className = $this->getClassReflection()->getName();
+		}
+		foreach ($functionLike->getParams() as $parameter) {
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$parameterAttributes[$parameter->var->name] = $this->attributeReflectionFactory->fromAttrGroups($parameter->attrGroups, InitializerExprContext::fromStubParameter($className, $this->getFile(), $functionLike));
+		}
+
+		return $parameterAttributes;
+	}
+
+	/**
+	 * @api
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $parameterOutTypes
+	 * @param array<string, bool> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 */
+	public function enterFunction(
+		Node\Stmt\Function_ $function,
+		TemplateTypeMap $templateTypeMap,
+		array $phpDocParameterTypes,
+		?Type $phpDocReturnType,
+		?Type $throwType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		bool $isInternal,
+		?bool $isPure = null,
+		bool $acceptsNamedArguments = true,
+		?Assertions $asserts = null,
+		?string $phpDocComment = null,
+		array $parameterOutTypes = [],
+		array $immediatelyInvokedCallableParameters = [],
+		array $phpDocClosureThisTypeParameters = [],
+	): self
+	{
+		return $this->enterFunctionLike(
+			new PhpFunctionFromParserNodeReflection(
+				$function,
+				$this->getFile(),
+				$templateTypeMap,
+				$this->getRealParameterTypes($function),
+				array_map(static fn (Type $type): Type => TemplateTypeHelper::toArgument($type), $phpDocParameterTypes),
+				$this->getRealParameterDefaultValues($function),
+				$this->getParameterAttributes($function),
+				$this->getFunctionType($function->returnType, $function->returnType === null, false),
+				$phpDocReturnType !== null ? TemplateTypeHelper::toArgument($phpDocReturnType) : null,
+				$throwType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$isInternal,
+				$isPure,
+				$acceptsNamedArguments,
+				$asserts ?? Assertions::createEmpty(),
+				$phpDocComment,
+				array_map(static fn (Type $type): Type => TemplateTypeHelper::toArgument($type), $parameterOutTypes),
+				$immediatelyInvokedCallableParameters,
+				$phpDocClosureThisTypeParameters,
+				$this->attributeReflectionFactory->fromAttrGroups($function->attrGroups, InitializerExprContext::fromStubParameter(null, $this->getFile(), $function)),
+			),
+			false,
+		);
+	}
+
+	private function enterFunctionLike(
+		PhpFunctionFromParserNodeReflection $functionReflection,
+		bool $preserveThis,
+	): self
+	{
+		$parametersByName = [];
+
+		foreach ($functionReflection->getParameters() as $parameter) {
+			$parametersByName[$parameter->getName()] = $parameter;
+		}
+
+		$expressionTypes = [];
+		$nativeExpressionTypes = [];
+		$conditionalTypes = [];
+		foreach ($functionReflection->getParameters() as $parameter) {
+			$parameterType = $parameter->getType();
+
+			if ($parameterType instanceof ConditionalTypeForParameter) {
+				$targetParameterName = substr($parameterType->getParameterName(), 1);
+				if (array_key_exists($targetParameterName, $parametersByName)) {
+					$targetParameter = $parametersByName[$targetParameterName];
+
+					$ifType = $parameterType->isNegated() ? $parameterType->getElse() : $parameterType->getIf();
+					$elseType = $parameterType->isNegated() ? $parameterType->getIf() : $parameterType->getElse();
+
+					$holder = new ConditionalExpressionHolder([
+						$parameterType->getParameterName() => ExpressionTypeHolder::createYes(new Variable($targetParameterName), TypeCombinator::intersect($targetParameter->getType(), $parameterType->getTarget())),
+					], new ExpressionTypeHolder(new Variable($parameter->getName()), $ifType, TrinaryLogic::createYes()));
+					$conditionalTypes['$' . $parameter->getName()][$holder->getKey()] = $holder;
+
+					$holder = new ConditionalExpressionHolder([
+						$parameterType->getParameterName() => ExpressionTypeHolder::createYes(new Variable($targetParameterName), TypeCombinator::remove($targetParameter->getType(), $parameterType->getTarget())),
+					], new ExpressionTypeHolder(new Variable($parameter->getName()), $elseType, TrinaryLogic::createYes()));
+					$conditionalTypes['$' . $parameter->getName()][$holder->getKey()] = $holder;
+				}
+			}
+
+			$paramExprString = '$' . $parameter->getName();
+			if ($parameter->isVariadic()) {
+				if (!$this->getPhpVersion()->supportsNamedArguments()->no() && $functionReflection->acceptsNamedArguments()->yes()) {
+					$parameterType = new ArrayType(new UnionType([new IntegerType(), new StringType()]), $parameterType);
+				} else {
+					$parameterType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $parameterType), new AccessoryArrayListType());
+				}
+			}
+			$parameterNode = new Variable($parameter->getName());
+			$expressionTypes[$paramExprString] = ExpressionTypeHolder::createYes($parameterNode, $parameterType);
+
+			$parameterOriginalValueExpr = new ParameterVariableOriginalValueExpr($parameter->getName());
+			$parameterOriginalValueExprString = $this->getNodeKey($parameterOriginalValueExpr);
+			$expressionTypes[$parameterOriginalValueExprString] = ExpressionTypeHolder::createYes($parameterOriginalValueExpr, $parameterType);
+
+			$nativeParameterType = $parameter->getNativeType();
+			if ($parameter->isVariadic()) {
+				if (!$this->getPhpVersion()->supportsNamedArguments()->no() && $functionReflection->acceptsNamedArguments()->yes()) {
+					$nativeParameterType = new ArrayType(new UnionType([new IntegerType(), new StringType()]), $nativeParameterType);
+				} else {
+					$nativeParameterType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $nativeParameterType), new AccessoryArrayListType());
+				}
+			}
+			$nativeExpressionTypes[$paramExprString] = ExpressionTypeHolder::createYes($parameterNode, $nativeParameterType);
+			$nativeExpressionTypes[$parameterOriginalValueExprString] = ExpressionTypeHolder::createYes($parameterOriginalValueExpr, $nativeParameterType);
+		}
+
+		if ($preserveThis && array_key_exists('$this', $this->expressionTypes)) {
+			$expressionTypes['$this'] = $this->expressionTypes['$this'];
+		}
+		if ($preserveThis && array_key_exists('$this', $this->nativeExpressionTypes)) {
+			$nativeExpressionTypes['$this'] = $this->nativeExpressionTypes['$this'];
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$functionReflection,
+			$this->getNamespace(),
+			array_merge($this->getConstantTypes(), $expressionTypes),
+			array_merge($this->getNativeConstantTypes(), $nativeExpressionTypes),
+			$conditionalTypes,
+		);
+	}
+
+	/** @api */
+	public function enterNamespace(string $namespaceName): self
+	{
+		return $this->scopeFactory->create(
+			$this->context->beginFile(),
+			$this->isDeclareStrictTypes(),
+			null,
+			$namespaceName,
+		);
+	}
+
+	/**
+	 * @param list<string> $scopeClasses
+	 */
+	public function enterClosureBind(?Type $thisType, ?Type $nativeThisType, array $scopeClasses): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		if ($thisType !== null) {
+			$expressionTypes['$this'] = ExpressionTypeHolder::createYes(new Variable('this'), $thisType);
+		} else {
+			unset($expressionTypes['$this']);
+		}
+
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		if ($nativeThisType !== null) {
+			$nativeExpressionTypes['$this'] = ExpressionTypeHolder::createYes(new Variable('this'), $nativeThisType);
+		} else {
+			unset($nativeExpressionTypes['$this']);
+		}
+
+		if ($scopeClasses === ['static'] && $this->isInClass()) {
+			$scopeClasses = [$this->getClassReflection()->getName()];
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$scopeClasses,
+			$this->anonymousFunctionReflection,
+		);
+	}
+
+	public function restoreOriginalScopeAfterClosureBind(self $originalScope): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		if (isset($originalScope->expressionTypes['$this'])) {
+			$expressionTypes['$this'] = $originalScope->expressionTypes['$this'];
+		} else {
+			unset($expressionTypes['$this']);
+		}
+
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		if (isset($originalScope->nativeExpressionTypes['$this'])) {
+			$nativeExpressionTypes['$this'] = $originalScope->nativeExpressionTypes['$this'];
+		} else {
+			unset($nativeExpressionTypes['$this']);
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$originalScope->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+		);
+	}
+
+	public function restoreThis(self $restoreThisScope): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+
+		if ($restoreThisScope->isInClass()) {
+			$nodeFinder = new NodeFinder();
+			$cb = static fn ($expr) => $expr instanceof Variable && $expr->name === 'this';
+			foreach ($restoreThisScope->expressionTypes as $exprString => $expressionTypeHolder) {
+				$expr = $expressionTypeHolder->getExpr();
+				$thisExpr = $nodeFinder->findFirst([$expr], $cb);
+				if ($thisExpr === null) {
+					continue;
+				}
+
+				$expressionTypes[$exprString] = $expressionTypeHolder;
+			}
+
+			foreach ($restoreThisScope->nativeExpressionTypes as $exprString => $expressionTypeHolder) {
+				$expr = $expressionTypeHolder->getExpr();
+				$thisExpr = $nodeFinder->findFirst([$expr], $cb);
+				if ($thisExpr === null) {
+					continue;
+				}
+
+				$nativeExpressionTypes[$exprString] = $expressionTypeHolder;
+			}
+		} else {
+			unset($expressionTypes['$this']);
+			unset($nativeExpressionTypes['$this']);
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function enterClosureCall(Type $thisType, Type $nativeThisType): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		$expressionTypes['$this'] = ExpressionTypeHolder::createYes(new Variable('this'), $thisType);
+
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		$nativeExpressionTypes['$this'] = ExpressionTypeHolder::createYes(new Variable('this'), $nativeThisType);
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$thisType->getObjectClassNames(),
+			$this->anonymousFunctionReflection,
+		);
+	}
+
+	/** @api */
+	public function isInClosureBind(): bool
+	{
+		return $this->inClosureBindScopeClasses !== [];
+	}
+
+	/**
+	 * @api
+	 * @param ParameterReflection[]|null $callableParameters
+	 */
+	public function enterAnonymousFunction(
+		Expr\Closure $closure,
+		?array $callableParameters,
+	): self
+	{
+		$anonymousFunctionReflection = $this->getType($closure);
+		if (!$anonymousFunctionReflection instanceof ClosureType) {
+			throw new ShouldNotHappenException();
+		}
+
+		$scope = $this->enterAnonymousFunctionWithoutReflection($closure, $callableParameters);
+
+		return $this->scopeFactory->create(
+			$scope->context,
+			$scope->isDeclareStrictTypes(),
+			$scope->getFunction(),
+			$scope->getNamespace(),
+			$scope->expressionTypes,
+			$scope->nativeExpressionTypes,
+			[],
+			$scope->inClosureBindScopeClasses,
+			$anonymousFunctionReflection,
+			true,
+			[],
+			[],
+			$this->inFunctionCallsStack,
+			false,
+			$this,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param ParameterReflection[]|null $callableParameters
+	 */
+	private function enterAnonymousFunctionWithoutReflection(
+		Expr\Closure $closure,
+		?array $callableParameters,
+	): self
+	{
+		$expressionTypes = [];
+		$nativeTypes = [];
+		foreach ($closure->params as $i => $parameter) {
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$paramExprString = sprintf('$%s', $parameter->var->name);
+			$isNullable = $this->isParameterValueNullable($parameter);
+			$parameterType = $this->getFunctionType($parameter->type, $isNullable, $parameter->variadic);
+			if ($callableParameters !== null) {
+				if (isset($callableParameters[$i])) {
+					$parameterType = self::intersectButNotNever($parameterType, $callableParameters[$i]->getType());
+				} elseif (count($callableParameters) > 0) {
+					$lastParameter = $callableParameters[count($callableParameters) - 1];
+					if ($lastParameter->isVariadic()) {
+						$parameterType = self::intersectButNotNever($parameterType, $lastParameter->getType());
+					} else {
+						$parameterType = self::intersectButNotNever($parameterType, new MixedType());
+					}
+				} else {
+					$parameterType = self::intersectButNotNever($parameterType, new MixedType());
+				}
+			}
+			$holder = ExpressionTypeHolder::createYes($parameter->var, $parameterType);
+			$expressionTypes[$paramExprString] = $holder;
+			$nativeTypes[$paramExprString] = $holder;
+		}
+
+		$nonRefVariableNames = [];
+		foreach ($closure->uses as $use) {
+			if (!is_string($use->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$variableName = $use->var->name;
+			$paramExprString = '$' . $use->var->name;
+			if ($use->byRef) {
+				$holder = ExpressionTypeHolder::createYes($use->var, new MixedType());
+				$expressionTypes[$paramExprString] = $holder;
+				$nativeTypes[$paramExprString] = $holder;
+				continue;
+			}
+			$nonRefVariableNames[$variableName] = true;
+			if ($this->hasVariableType($variableName)->no()) {
+				$variableType = new ErrorType();
+				$variableNativeType = new ErrorType();
+			} else {
+				$variableType = $this->getVariableType($variableName);
+				$variableNativeType = $this->getNativeType($use->var);
+			}
+			$expressionTypes[$paramExprString] = ExpressionTypeHolder::createYes($use->var, $variableType);
+			$nativeTypes[$paramExprString] = ExpressionTypeHolder::createYes($use->var, $variableNativeType);
+		}
+
+		foreach ($this->invalidateStaticExpressions($this->expressionTypes) as $exprString => $typeHolder) {
+			$expr = $typeHolder->getExpr();
+			if ($expr instanceof Variable) {
+				continue;
+			}
+			$variables = (new NodeFinder())->findInstanceOf([$expr], Variable::class);
+			if ($variables === [] && !$this->expressionTypeIsUnchangeable($typeHolder)) {
+				continue;
+			}
+			foreach ($variables as $variable) {
+				if (!is_string($variable->name)) {
+					continue 2;
+				}
+				if (!array_key_exists($variable->name, $nonRefVariableNames)) {
+					continue 2;
+				}
+			}
+
+			$expressionTypes[$exprString] = $typeHolder;
+		}
+
+		if ($this->hasVariableType('this')->yes() && !$closure->static) {
+			$node = new Variable('this');
+			$expressionTypes['$this'] = ExpressionTypeHolder::createYes($node, $this->getType($node));
+			$nativeTypes['$this'] = ExpressionTypeHolder::createYes($node, $this->getNativeType($node));
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			array_merge($this->getConstantTypes(), $expressionTypes),
+			array_merge($this->getNativeConstantTypes(), $nativeTypes),
+			[],
+			$this->inClosureBindScopeClasses,
+			new TrivialParametersAcceptor(),
+			true,
+			[],
+			[],
+			[],
+			false,
+			$this,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	private function expressionTypeIsUnchangeable(ExpressionTypeHolder $typeHolder): bool
+	{
+		$expr = $typeHolder->getExpr();
+		$type = $typeHolder->getType();
+
+		return $expr instanceof FuncCall
+			&& !$expr->isFirstClassCallable()
+			&& $expr->name instanceof FullyQualified
+			&& $expr->name->toLowerString() === 'function_exists'
+			&& isset($expr->getArgs()[0])
+			&& count($this->getType($expr->getArgs()[0]->value)->getConstantStrings()) === 1
+			&& $type->isTrue()->yes();
+	}
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $expressionTypes
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function invalidateStaticExpressions(array $expressionTypes): array
+	{
+		$filteredExpressionTypes = [];
+		$nodeFinder = new NodeFinder();
+		foreach ($expressionTypes as $exprString => $expressionType) {
+			$staticExpression = $nodeFinder->findFirst(
+				[$expressionType->getExpr()],
+				static fn ($node) => $node instanceof Expr\StaticCall || $node instanceof Expr\StaticPropertyFetch,
+			);
+			if ($staticExpression !== null) {
+				continue;
+			}
+			$filteredExpressionTypes[$exprString] = $expressionType;
+		}
+		return $filteredExpressionTypes;
+	}
+
+	/**
+	 * @api
+	 * @param ParameterReflection[]|null $callableParameters
+	 */
+	public function enterArrowFunction(Expr\ArrowFunction $arrowFunction, ?array $callableParameters): self
+	{
+		$anonymousFunctionReflection = $this->getType($arrowFunction);
+		if (!$anonymousFunctionReflection instanceof ClosureType) {
+			throw new ShouldNotHappenException();
+		}
+
+		$scope = $this->enterArrowFunctionWithoutReflection($arrowFunction, $callableParameters);
+
+		return $this->scopeFactory->create(
+			$scope->context,
+			$scope->isDeclareStrictTypes(),
+			$scope->getFunction(),
+			$scope->getNamespace(),
+			$scope->expressionTypes,
+			$scope->nativeExpressionTypes,
+			$scope->conditionalExpressions,
+			$scope->inClosureBindScopeClasses,
+			$anonymousFunctionReflection,
+			true,
+			[],
+			[],
+			$this->inFunctionCallsStack,
+			$scope->afterExtractCall,
+			$scope->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param ParameterReflection[]|null $callableParameters
+	 */
+	private function enterArrowFunctionWithoutReflection(Expr\ArrowFunction $arrowFunction, ?array $callableParameters): self
+	{
+		$arrowFunctionScope = $this;
+		foreach ($arrowFunction->params as $i => $parameter) {
+			if ($parameter->type === null) {
+				$parameterType = new MixedType();
+			} else {
+				$isNullable = $this->isParameterValueNullable($parameter);
+				$parameterType = $this->getFunctionType($parameter->type, $isNullable, $parameter->variadic);
+			}
+
+			if ($callableParameters !== null) {
+				if (isset($callableParameters[$i])) {
+					$parameterType = self::intersectButNotNever($parameterType, $callableParameters[$i]->getType());
+				} elseif (count($callableParameters) > 0) {
+					$lastParameter = $callableParameters[count($callableParameters) - 1];
+					if ($lastParameter->isVariadic()) {
+						$parameterType = self::intersectButNotNever($parameterType, $lastParameter->getType());
+					} else {
+						$parameterType = self::intersectButNotNever($parameterType, new MixedType());
+					}
+				} else {
+					$parameterType = self::intersectButNotNever($parameterType, new MixedType());
+				}
+			}
+
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$arrowFunctionScope = $arrowFunctionScope->assignVariable($parameter->var->name, $parameterType, $parameterType, TrinaryLogic::createYes());
+		}
+
+		if ($arrowFunction->static) {
+			$arrowFunctionScope = $arrowFunctionScope->invalidateExpression(new Variable('this'));
+		}
+
+		return $this->scopeFactory->create(
+			$arrowFunctionScope->context,
+			$this->isDeclareStrictTypes(),
+			$arrowFunctionScope->getFunction(),
+			$arrowFunctionScope->getNamespace(),
+			$this->invalidateStaticExpressions($arrowFunctionScope->expressionTypes),
+			$arrowFunctionScope->nativeExpressionTypes,
+			$arrowFunctionScope->conditionalExpressions,
+			$arrowFunctionScope->inClosureBindScopeClasses,
+			new TrivialParametersAcceptor(),
+			true,
+			[],
+			[],
+			[],
+			$arrowFunctionScope->afterExtractCall,
+			$arrowFunctionScope->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function isParameterValueNullable(Node\Param $parameter): bool
+	{
+		if ($parameter->default instanceof ConstFetch) {
+			return strtolower((string) $parameter->default->name) === 'null';
+		}
+
+		return false;
+	}
+
+	/**
+	 * @api
+	 * @param Node\Name|Node\Identifier|Node\ComplexType|null $type
+	 */
+	public function getFunctionType($type, bool $isNullable, bool $isVariadic): Type
+	{
+		if ($isNullable) {
+			return TypeCombinator::addNull(
+				$this->getFunctionType($type, false, $isVariadic),
+			);
+		}
+		if ($isVariadic) {
+			if (!$this->getPhpVersion()->supportsNamedArguments()->no()) {
+				return new ArrayType(new UnionType([new IntegerType(), new StringType()]), $this->getFunctionType(
+					$type,
+					false,
+					false,
+				));
+			}
+
+			return TypeCombinator::intersect(new ArrayType(new IntegerType(), $this->getFunctionType(
+				$type,
+				false,
+				false,
+			)), new AccessoryArrayListType());
+		}
+
+		if ($type instanceof Name) {
+			$className = (string) $type;
+			$lowercasedClassName = strtolower($className);
+			if ($lowercasedClassName === 'parent') {
+				if ($this->isInClass() && $this->getClassReflection()->getParentClass() !== null) {
+					return new ObjectType($this->getClassReflection()->getParentClass()->getName());
+				}
+
+				return new NonexistentParentClassType();
+			}
+		}
+
+		return ParserNodeTypeToPHPStanType::resolve($type, $this->isInClass() ? $this->getClassReflection() : null);
+	}
+
+	private static function intersectButNotNever(Type $nativeType, Type $inferredType): Type
+	{
+		if ($nativeType->isSuperTypeOf($inferredType)->no()) {
+			return $nativeType;
+		}
+
+		$result = TypeCombinator::intersect($nativeType, $inferredType);
+		if (TypeCombinator::containsNull($nativeType)) {
+			return TypeCombinator::addNull($result);
+		}
+
+		return $result;
+	}
+
+	public function enterMatch(Expr\Match_ $expr): self
+	{
+		if ($expr->cond instanceof Variable) {
+			return $this;
+		}
+		if ($expr->cond instanceof AlwaysRememberedExpr) {
+			$cond = $expr->cond->expr;
+		} else {
+			$cond = $expr->cond;
+		}
+
+		$type = $this->getType($cond);
+		$nativeType = $this->getNativeType($cond);
+		$condExpr = new AlwaysRememberedExpr($cond, $type, $nativeType);
+		$expr->cond = $condExpr;
+
+		return $this->assignExpression($condExpr, $type, $nativeType);
+	}
+
+	public function enterForeach(self $originalScope, Expr $iteratee, string $valueName, ?string $keyName): self
+	{
+		$iterateeType = $originalScope->getType($iteratee);
+		$nativeIterateeType = $originalScope->getNativeType($iteratee);
+		$scope = $this->assignVariable(
+			$valueName,
+			$originalScope->getIterableValueType($iterateeType),
+			$originalScope->getIterableValueType($nativeIterateeType),
+			TrinaryLogic::createYes(),
+		);
+		if ($keyName !== null) {
+			$scope = $scope->enterForeachKey($originalScope, $iteratee, $keyName);
+		}
+
+		return $scope;
+	}
+
+	public function enterForeachKey(self $originalScope, Expr $iteratee, string $keyName): self
+	{
+		$iterateeType = $originalScope->getType($iteratee);
+		$nativeIterateeType = $originalScope->getNativeType($iteratee);
+		$scope = $this->assignVariable(
+			$keyName,
+			$originalScope->getIterableKeyType($iterateeType),
+			$originalScope->getIterableKeyType($nativeIterateeType),
+			TrinaryLogic::createYes(),
+		);
+
+		if ($iterateeType->isArray()->yes()) {
+			$scope = $scope->assignExpression(
+				new Expr\ArrayDimFetch($iteratee, new Variable($keyName)),
+				$originalScope->getIterableValueType($iterateeType),
+				$originalScope->getIterableValueType($nativeIterateeType),
+			);
+		}
+
+		return $scope;
+	}
+
+	public function enterCatchType(Type $catchType, ?string $variableName): self
+	{
+		if ($variableName === null) {
+			return $this;
+		}
+
+		return $this->assignVariable(
+			$variableName,
+			TypeCombinator::intersect($catchType, new ObjectType(Throwable::class)),
+			TypeCombinator::intersect($catchType, new ObjectType(Throwable::class)),
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function enterExpressionAssign(Expr $expr): self
+	{
+		$exprString = $this->getNodeKey($expr);
+		$currentlyAssignedExpressions = $this->currentlyAssignedExpressions;
+		$currentlyAssignedExpressions[$exprString] = true;
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+		$scope->resolvedTypes = $this->resolvedTypes;
+		$scope->truthyScopes = $this->truthyScopes;
+		$scope->falseyScopes = $this->falseyScopes;
+
+		return $scope;
+	}
+
+	public function exitExpressionAssign(Expr $expr): self
+	{
+		$exprString = $this->getNodeKey($expr);
+		$currentlyAssignedExpressions = $this->currentlyAssignedExpressions;
+		unset($currentlyAssignedExpressions[$exprString]);
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+		$scope->resolvedTypes = $this->resolvedTypes;
+		$scope->truthyScopes = $this->truthyScopes;
+		$scope->falseyScopes = $this->falseyScopes;
+
+		return $scope;
+	}
+
+	/** @api */
+	public function isInExpressionAssign(Expr $expr): bool
+	{
+		$exprString = $this->getNodeKey($expr);
+		return array_key_exists($exprString, $this->currentlyAssignedExpressions);
+	}
+
+	public function setAllowedUndefinedExpression(Expr $expr): self
+	{
+		if ($expr instanceof Expr\StaticPropertyFetch) {
+			return $this;
+		}
+
+		$exprString = $this->getNodeKey($expr);
+		$currentlyAllowedUndefinedExpressions = $this->currentlyAllowedUndefinedExpressions;
+		$currentlyAllowedUndefinedExpressions[$exprString] = true;
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+		$scope->resolvedTypes = $this->resolvedTypes;
+		$scope->truthyScopes = $this->truthyScopes;
+		$scope->falseyScopes = $this->falseyScopes;
+
+		return $scope;
+	}
+
+	public function unsetAllowedUndefinedExpression(Expr $expr): self
+	{
+		$exprString = $this->getNodeKey($expr);
+		$currentlyAllowedUndefinedExpressions = $this->currentlyAllowedUndefinedExpressions;
+		unset($currentlyAllowedUndefinedExpressions[$exprString]);
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->isInFirstLevelStatement(),
+			$this->currentlyAssignedExpressions,
+			$currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+		$scope->resolvedTypes = $this->resolvedTypes;
+		$scope->truthyScopes = $this->truthyScopes;
+		$scope->falseyScopes = $this->falseyScopes;
+
+		return $scope;
+	}
+
+	/** @api */
+	public function isUndefinedExpressionAllowed(Expr $expr): bool
+	{
+		$exprString = $this->getNodeKey($expr);
+		return array_key_exists($exprString, $this->currentlyAllowedUndefinedExpressions);
+	}
+
+	public function assignVariable(string $variableName, Type $type, Type $nativeType, TrinaryLogic $certainty): self
+	{
+		$node = new Variable($variableName);
+		$scope = $this->assignExpression($node, $type, $nativeType);
+		if ($certainty->no()) {
+			throw new ShouldNotHappenException();
+		} elseif (!$certainty->yes()) {
+			$exprString = '$' . $variableName;
+			$scope->expressionTypes[$exprString] = new ExpressionTypeHolder($node, $type, $certainty);
+			$scope->nativeExpressionTypes[$exprString] = new ExpressionTypeHolder($node, $nativeType, $certainty);
+		}
+
+		$parameterOriginalValueExprString = $this->getNodeKey(new ParameterVariableOriginalValueExpr($variableName));
+		unset($scope->expressionTypes[$parameterOriginalValueExprString]);
+		unset($scope->nativeExpressionTypes[$parameterOriginalValueExprString]);
+
+		return $scope;
+	}
+
+	public function unsetExpression(Expr $expr): self
+	{
+		$scope = $this;
+		if ($expr instanceof Expr\ArrayDimFetch && $expr->dim !== null) {
+			$exprVarType = $scope->getType($expr->var);
+			$dimType = $scope->getType($expr->dim);
+			$unsetType = $exprVarType->unsetOffset($dimType);
+			$exprVarNativeType = $scope->getNativeType($expr->var);
+			$dimNativeType = $scope->getNativeType($expr->dim);
+			$unsetNativeType = $exprVarNativeType->unsetOffset($dimNativeType);
+			$scope = $scope->assignExpression($expr->var, $unsetType, $unsetNativeType)->invalidateExpression(
+				new FuncCall(new FullyQualified('count'), [new Arg($expr->var)]),
+			)->invalidateExpression(
+				new FuncCall(new FullyQualified('sizeof'), [new Arg($expr->var)]),
+			)->invalidateExpression(
+				new FuncCall(new Name('count'), [new Arg($expr->var)]),
+			)->invalidateExpression(
+				new FuncCall(new Name('sizeof'), [new Arg($expr->var)]),
+			);
+
+			if ($expr->var instanceof Expr\ArrayDimFetch && $expr->var->dim !== null) {
+				$scope = $scope->assignExpression(
+					$expr->var->var,
+					$this->getType($expr->var->var)->setOffsetValueType(
+						$scope->getType($expr->var->dim),
+						$scope->getType($expr->var),
+					),
+					$this->getNativeType($expr->var->var)->setOffsetValueType(
+						$scope->getNativeType($expr->var->dim),
+						$scope->getNativeType($expr->var),
+					),
+				);
+			}
+		}
+
+		return $scope->invalidateExpression($expr);
+	}
+
+	public function specifyExpressionType(Expr $expr, Type $type, Type $nativeType, TrinaryLogic $certainty): self
+	{
+		if ($expr instanceof ConstFetch) {
+			$loweredConstName = strtolower($expr->name->toString());
+			if (in_array($loweredConstName, ['true', 'false', 'null'], true)) {
+				return $this;
+			}
+		}
+
+		if ($expr instanceof FuncCall && $expr->name instanceof Name && $type->isFalse()->yes()) {
+			$functionName = $this->reflectionProvider->resolveFunctionName($expr->name, $this);
+			if ($functionName !== null && in_array(strtolower($functionName), [
+				'is_dir',
+				'is_file',
+				'file_exists',
+			], true)) {
+				return $this;
+			}
+		}
+
+		$scope = $this;
+		if ($expr instanceof Expr\ArrayDimFetch && $expr->dim !== null) {
+			$dimType = $scope->getType($expr->dim)->toArrayKey();
+			if ($dimType instanceof ConstantIntegerType || $dimType instanceof ConstantStringType) {
+				$exprVarType = $scope->getType($expr->var);
+				if (!$exprVarType instanceof MixedType && !$exprVarType->isArray()->no()) {
+					$types = [
+						new ArrayType(new MixedType(), new MixedType()),
+						new ObjectType(ArrayAccess::class),
+						new NullType(),
+					];
+					if ($dimType instanceof ConstantIntegerType) {
+						$types[] = new StringType();
+					}
+
+					$scope = $scope->specifyExpressionType(
+						$expr->var,
+						TypeCombinator::intersect(
+							TypeCombinator::intersect($exprVarType, TypeCombinator::union(...$types)),
+							new HasOffsetValueType($dimType, $type),
+						),
+						$scope->getNativeType($expr->var),
+						$certainty,
+					);
+				}
+			}
+		}
+
+		if ($certainty->no()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$exprString = $this->getNodeKey($expr);
+		$expressionTypes = $scope->expressionTypes;
+		$expressionTypes[$exprString] = new ExpressionTypeHolder($expr, $type, $certainty);
+		$nativeTypes = $scope->nativeExpressionTypes;
+		$nativeTypes[$exprString] = new ExpressionTypeHolder($expr, $nativeType, $certainty);
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+
+		if ($expr instanceof AlwaysRememberedExpr) {
+			return $scope->specifyExpressionType($expr->expr, $type, $nativeType, $certainty);
+		}
+
+		return $scope;
+	}
+
+	public function assignExpression(Expr $expr, Type $type, Type $nativeType): self
+	{
+		$scope = $this;
+		if ($expr instanceof PropertyFetch) {
+			$scope = $this->invalidateExpression($expr)
+				->invalidateMethodsOnExpression($expr->var);
+		} elseif ($expr instanceof Expr\StaticPropertyFetch) {
+			$scope = $this->invalidateExpression($expr);
+		} elseif ($expr instanceof Variable) {
+			$scope = $this->invalidateExpression($expr);
+		}
+
+		return $scope->specifyExpressionType($expr, $type, $nativeType, TrinaryLogic::createYes());
+	}
+
+	public function assignInitializedProperty(Type $fetchedOnType, string $propertyName): self
+	{
+		if (!$this->isInClass()) {
+			return $this;
+		}
+
+		if (TypeUtils::findThisType($fetchedOnType) === null) {
+			return $this;
+		}
+
+		$propertyReflection = $this->getPropertyReflection($fetchedOnType, $propertyName);
+		if ($propertyReflection === null) {
+			return $this;
+		}
+		$declaringClass = $propertyReflection->getDeclaringClass();
+		if ($this->getClassReflection()->getName() !== $declaringClass->getName()) {
+			return $this;
+		}
+		if (!$declaringClass->hasNativeProperty($propertyName)) {
+			return $this;
+		}
+
+		return $this->assignExpression(new PropertyInitializationExpr($propertyName), new MixedType(), new MixedType());
+	}
+
+	public function invalidateExpression(Expr $expressionToInvalidate, bool $requireMoreCharacters = false): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		$invalidated = false;
+		$exprStringToInvalidate = $this->getNodeKey($expressionToInvalidate);
+
+		foreach ($expressionTypes as $exprString => $exprTypeHolder) {
+			$exprExpr = $exprTypeHolder->getExpr();
+			if (!$this->shouldInvalidateExpression($exprStringToInvalidate, $expressionToInvalidate, $exprExpr, $requireMoreCharacters)) {
+				continue;
+			}
+
+			unset($expressionTypes[$exprString]);
+			unset($nativeExpressionTypes[$exprString]);
+			$invalidated = true;
+		}
+
+		$newConditionalExpressions = [];
+		foreach ($this->conditionalExpressions as $conditionalExprString => $holders) {
+			if (count($holders) === 0) {
+				continue;
+			}
+			if ($this->shouldInvalidateExpression($exprStringToInvalidate, $expressionToInvalidate, $holders[array_key_first($holders)]->getTypeHolder()->getExpr())) {
+				$invalidated = true;
+				continue;
+			}
+			foreach ($holders as $holder) {
+				$conditionalTypeHolders = $holder->getConditionExpressionTypeHolders();
+				foreach ($conditionalTypeHolders as $conditionalTypeHolder) {
+					if ($this->shouldInvalidateExpression($exprStringToInvalidate, $expressionToInvalidate, $conditionalTypeHolder->getExpr())) {
+						$invalidated = true;
+						continue 3;
+					}
+				}
+			}
+			$newConditionalExpressions[$conditionalExprString] = $holders;
+		}
+
+		if (!$invalidated) {
+			return $this;
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$newConditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	private function shouldInvalidateExpression(string $exprStringToInvalidate, Expr $exprToInvalidate, Expr $expr, bool $requireMoreCharacters = false): bool
+	{
+		if ($requireMoreCharacters && $exprStringToInvalidate === $this->getNodeKey($expr)) {
+			return false;
+		}
+
+		// Variables will not contain traversable expressions. skip the NodeFinder overhead
+		if ($expr instanceof Variable && is_string($expr->name) && !$requireMoreCharacters) {
+			return $exprStringToInvalidate === $this->getNodeKey($expr);
+		}
+
+		$nodeFinder = new NodeFinder();
+		$expressionToInvalidateClass = get_class($exprToInvalidate);
+		$found = $nodeFinder->findFirst([$expr], function (Node $node) use ($expressionToInvalidateClass, $exprStringToInvalidate): bool {
+			if (!$node instanceof $expressionToInvalidateClass) {
+				return false;
+			}
+
+			$nodeString = $this->getNodeKey($node);
+
+			return $nodeString === $exprStringToInvalidate;
+		});
+
+		if ($found === null) {
+			return false;
+		}
+
+		if ($this->phpVersion->supportsReadOnlyProperties() && $expr instanceof PropertyFetch && $expr->name instanceof Node\Identifier && $requireMoreCharacters) {
+			$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($expr, $this);
+			if ($propertyReflection !== null) {
+				$nativePropertyReflection = $propertyReflection->getNativeReflection();
+				if ($nativePropertyReflection !== null && $nativePropertyReflection->isReadOnly()) {
+					return false;
+				}
+			}
+		}
+
+		return true;
+	}
+
+	private function invalidateMethodsOnExpression(Expr $expressionToInvalidate): self
+	{
+		$exprStringToInvalidate = $this->getNodeKey($expressionToInvalidate);
+		$expressionTypes = $this->expressionTypes;
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		$invalidated = false;
+		$nodeFinder = new NodeFinder();
+		foreach ($expressionTypes as $exprString => $exprTypeHolder) {
+			$expr = $exprTypeHolder->getExpr();
+			$found = $nodeFinder->findFirst([$expr], function (Node $node) use ($exprStringToInvalidate): bool {
+				if (!$node instanceof MethodCall) {
+					return false;
+				}
+
+				return $this->getNodeKey($node->var) === $exprStringToInvalidate;
+			});
+			if ($found === null) {
+				continue;
+			}
+
+			unset($expressionTypes[$exprString]);
+			unset($nativeExpressionTypes[$exprString]);
+			$invalidated = true;
+		}
+
+		if (!$invalidated) {
+			return $this;
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	private function setExpressionCertainty(Expr $expr, TrinaryLogic $certainty): self
+	{
+		if ($this->hasExpressionType($expr)->no()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$originalExprType = $this->getType($expr);
+		$nativeType = $this->getNativeType($expr);
+
+		return $this->specifyExpressionType(
+			$expr,
+			$originalExprType,
+			$nativeType,
+			$certainty,
+		);
+	}
+
+	public function addTypeToExpression(Expr $expr, Type $type): self
+	{
+		$originalExprType = $this->getType($expr);
+		$nativeType = $this->getNativeType($expr);
+
+		if ($originalExprType->equals($nativeType)) {
+			$newType = TypeCombinator::intersect($type, $originalExprType);
+			return $this->specifyExpressionType($expr, $newType, $newType, TrinaryLogic::createYes());
+		}
+
+		return $this->specifyExpressionType(
+			$expr,
+			TypeCombinator::intersect($type, $originalExprType),
+			TypeCombinator::intersect($type, $nativeType),
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function removeTypeFromExpression(Expr $expr, Type $typeToRemove): self
+	{
+		$exprType = $this->getType($expr);
+		if (
+			$exprType instanceof NeverType ||
+			$typeToRemove instanceof NeverType
+		) {
+			return $this;
+		}
+		return $this->specifyExpressionType(
+			$expr,
+			TypeCombinator::remove($exprType, $typeToRemove),
+			TypeCombinator::remove($this->getNativeType($expr), $typeToRemove),
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	/**
+	 * @api
+	 * @return MutatingScope
+	 */
+	public function filterByTruthyValue(Expr $expr): Scope
+	{
+		$exprString = $this->getNodeKey($expr);
+		if (array_key_exists($exprString, $this->truthyScopes)) {
+			return $this->truthyScopes[$exprString];
+		}
+
+		$specifiedTypes = $this->typeSpecifier->specifyTypesInCondition($this, $expr, TypeSpecifierContext::createTruthy());
+		$scope = $this->filterBySpecifiedTypes($specifiedTypes);
+		$this->truthyScopes[$exprString] = $scope;
+
+		return $scope;
+	}
+
+	/**
+	 * @api
+	 * @return MutatingScope
+	 */
+	public function filterByFalseyValue(Expr $expr): Scope
+	{
+		$exprString = $this->getNodeKey($expr);
+		if (array_key_exists($exprString, $this->falseyScopes)) {
+			return $this->falseyScopes[$exprString];
+		}
+
+		$specifiedTypes = $this->typeSpecifier->specifyTypesInCondition($this, $expr, TypeSpecifierContext::createFalsey());
+		$scope = $this->filterBySpecifiedTypes($specifiedTypes);
+		$this->falseyScopes[$exprString] = $scope;
+
+		return $scope;
+	}
+
+	public function filterBySpecifiedTypes(SpecifiedTypes $specifiedTypes): self
+	{
+		$typeSpecifications = [];
+		foreach ($specifiedTypes->getSureTypes() as $exprString => [$expr, $type]) {
+			if ($expr instanceof Node\Scalar || $expr instanceof Array_ || $expr instanceof Expr\UnaryMinus && $expr->expr instanceof Node\Scalar) {
+				continue;
+			}
+			$typeSpecifications[] = [
+				'sure' => true,
+				'exprString' => (string) $exprString,
+				'expr' => $expr,
+				'type' => $type,
+			];
+		}
+		foreach ($specifiedTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
+			if ($expr instanceof Node\Scalar || $expr instanceof Array_ || $expr instanceof Expr\UnaryMinus && $expr->expr instanceof Node\Scalar) {
+				continue;
+			}
+			$typeSpecifications[] = [
+				'sure' => false,
+				'exprString' => (string) $exprString,
+				'expr' => $expr,
+				'type' => $type,
+			];
+		}
+
+		usort($typeSpecifications, static function (array $a, array $b): int {
+			$length = strlen($a['exprString']) - strlen($b['exprString']);
+			if ($length !== 0) {
+				return $length;
+			}
+
+			return $b['sure'] - $a['sure']; // @phpstan-ignore minus.leftNonNumeric, minus.rightNonNumeric
+		});
+
+		$scope = $this;
+		$specifiedExpressions = [];
+		foreach ($typeSpecifications as $typeSpecification) {
+			$expr = $typeSpecification['expr'];
+			$type = $typeSpecification['type'];
+
+			if ($expr instanceof IssetExpr) {
+				$issetExpr = $expr;
+				$expr = $issetExpr->getExpr();
+
+				if ($typeSpecification['sure']) {
+					$scope = $scope->setExpressionCertainty(
+						$expr,
+						TrinaryLogic::createMaybe(),
+					);
+				} else {
+					$scope = $scope->unsetExpression($expr);
+				}
+
+				continue;
+			}
+
+			if ($typeSpecification['sure']) {
+				if ($specifiedTypes->shouldOverwrite()) {
+					$scope = $scope->assignExpression($expr, $type, $type);
+				} else {
+					$scope = $scope->addTypeToExpression($expr, $type);
+				}
+			} else {
+				$scope = $scope->removeTypeFromExpression($expr, $type);
+			}
+			$specifiedExpressions[$this->getNodeKey($expr)] = ExpressionTypeHolder::createYes($expr, $scope->getType($expr));
+		}
+
+		$conditions = [];
+		foreach ($scope->conditionalExpressions as $conditionalExprString => $conditionalExpressions) {
+			foreach ($conditionalExpressions as $conditionalExpression) {
+				foreach ($conditionalExpression->getConditionExpressionTypeHolders() as $holderExprString => $conditionalTypeHolder) {
+					if (!array_key_exists($holderExprString, $specifiedExpressions) || !$specifiedExpressions[$holderExprString]->equals($conditionalTypeHolder)) {
+						continue 2;
+					}
+				}
+
+				$conditions[$conditionalExprString][] = $conditionalExpression;
+				$specifiedExpressions[$conditionalExprString] = $conditionalExpression->getTypeHolder();
+			}
+		}
+
+		foreach ($conditions as $conditionalExprString => $expressions) {
+			$certainty = TrinaryLogic::lazyExtremeIdentity($expressions, static fn (ConditionalExpressionHolder $holder) => $holder->getTypeHolder()->getCertainty());
+			if ($certainty->no()) {
+				unset($scope->expressionTypes[$conditionalExprString]);
+			} else {
+				$type = TypeCombinator::intersect(...array_map(static fn (ConditionalExpressionHolder $holder) => $holder->getTypeHolder()->getType(), $expressions));
+
+				$scope->expressionTypes[$conditionalExprString] = array_key_exists($conditionalExprString, $scope->expressionTypes)
+					? new ExpressionTypeHolder(
+						$scope->expressionTypes[$conditionalExprString]->getExpr(),
+						TypeCombinator::intersect($scope->expressionTypes[$conditionalExprString]->getType(), $type),
+						TrinaryLogic::maxMin($scope->expressionTypes[$conditionalExprString]->getCertainty(), $certainty),
+					)
+					: $expressions[0]->getTypeHolder();
+			}
+		}
+
+		return $scope->scopeFactory->create(
+			$scope->context,
+			$scope->isDeclareStrictTypes(),
+			$scope->getFunction(),
+			$scope->getNamespace(),
+			$scope->expressionTypes,
+			$scope->nativeExpressionTypes,
+			array_merge($specifiedTypes->getNewConditionalExpressionHolders(), $scope->conditionalExpressions),
+			$scope->inClosureBindScopeClasses,
+			$scope->anonymousFunctionReflection,
+			$scope->inFirstLevelStatement,
+			$scope->currentlyAssignedExpressions,
+			$scope->currentlyAllowedUndefinedExpressions,
+			$scope->inFunctionCallsStack,
+			$scope->afterExtractCall,
+			$scope->parentScope,
+			$scope->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param ConditionalExpressionHolder[] $conditionalExpressionHolders
+	 */
+	public function addConditionalExpressions(string $exprString, array $conditionalExpressionHolders): self
+	{
+		$conditionalExpressions = $this->conditionalExpressions;
+		$conditionalExpressions[$exprString] = $conditionalExpressionHolders;
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function exitFirstLevelStatements(): self
+	{
+		if (!$this->inFirstLevelStatement) {
+			return $this;
+		}
+
+		if ($this->scopeOutOfFirstLevelStatement !== null) {
+			return $this->scopeOutOfFirstLevelStatement;
+		}
+
+		$scope = $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->expressionTypes,
+			$this->nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			false,
+			$this->currentlyAssignedExpressions,
+			$this->currentlyAllowedUndefinedExpressions,
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+		$scope->resolvedTypes = $this->resolvedTypes;
+		$scope->truthyScopes = $this->truthyScopes;
+		$scope->falseyScopes = $this->falseyScopes;
+		$this->scopeOutOfFirstLevelStatement = $scope;
+
+		return $scope;
+	}
+
+	/** @api */
+	public function isInFirstLevelStatement(): bool
+	{
+		return $this->inFirstLevelStatement;
+	}
+
+	public function mergeWith(?self $otherScope): self
+	{
+		if ($otherScope === null) {
+			return $this;
+		}
+		$ourExpressionTypes = $this->expressionTypes;
+		$theirExpressionTypes = $otherScope->expressionTypes;
+
+		$mergedExpressionTypes = $this->mergeVariableHolders($ourExpressionTypes, $theirExpressionTypes);
+		$conditionalExpressions = $this->intersectConditionalExpressions($otherScope->conditionalExpressions);
+		$conditionalExpressions = $this->createConditionalExpressions(
+			$conditionalExpressions,
+			$ourExpressionTypes,
+			$theirExpressionTypes,
+			$mergedExpressionTypes,
+		);
+		$conditionalExpressions = $this->createConditionalExpressions(
+			$conditionalExpressions,
+			$theirExpressionTypes,
+			$ourExpressionTypes,
+			$mergedExpressionTypes,
+		);
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$mergedExpressionTypes,
+			$this->mergeVariableHolders($this->nativeExpressionTypes, $otherScope->nativeExpressionTypes),
+			$conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			[],
+			$this->afterExtractCall && $otherScope->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param array<string, ConditionalExpressionHolder[]> $otherConditionalExpressions
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function intersectConditionalExpressions(array $otherConditionalExpressions): array
+	{
+		$newConditionalExpressions = [];
+		foreach ($this->conditionalExpressions as $exprString => $holders) {
+			if (!array_key_exists($exprString, $otherConditionalExpressions)) {
+				continue;
+			}
+
+			$otherHolders = $otherConditionalExpressions[$exprString];
+			foreach (array_keys($holders) as $key) {
+				if (!array_key_exists($key, $otherHolders)) {
+					continue 2;
+				}
+			}
+
+			$newConditionalExpressions[$exprString] = $holders;
+		}
+
+		return $newConditionalExpressions;
+	}
+
+	/**
+	 * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
+	 * @param array<string, ExpressionTypeHolder> $ourExpressionTypes
+	 * @param array<string, ExpressionTypeHolder> $theirExpressionTypes
+	 * @param array<string, ExpressionTypeHolder> $mergedExpressionTypes
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function createConditionalExpressions(
+		array $conditionalExpressions,
+		array $ourExpressionTypes,
+		array $theirExpressionTypes,
+		array $mergedExpressionTypes,
+	): array
+	{
+		$newVariableTypes = $ourExpressionTypes;
+		foreach ($theirExpressionTypes as $exprString => $holder) {
+			if (!array_key_exists($exprString, $mergedExpressionTypes)) {
+				continue;
+			}
+
+			if (!$mergedExpressionTypes[$exprString]->getType()->equals($holder->getType())) {
+				continue;
+			}
+
+			unset($newVariableTypes[$exprString]);
+		}
+
+		$typeGuards = [];
+		foreach ($newVariableTypes as $exprString => $holder) {
+			if (!$holder->getCertainty()->yes()) {
+				continue;
+			}
+			if (!array_key_exists($exprString, $mergedExpressionTypes)) {
+				continue;
+			}
+			if ($mergedExpressionTypes[$exprString]->getType()->equals($holder->getType())) {
+				continue;
+			}
+
+			$typeGuards[$exprString] = $holder;
+		}
+
+		if (count($typeGuards) === 0) {
+			return $conditionalExpressions;
+		}
+
+		foreach ($newVariableTypes as $exprString => $holder) {
+			if (
+				array_key_exists($exprString, $mergedExpressionTypes)
+				&& $mergedExpressionTypes[$exprString]->equals($holder)
+			) {
+				continue;
+			}
+
+			$variableTypeGuards = $typeGuards;
+			unset($variableTypeGuards[$exprString]);
+
+			if (count($variableTypeGuards) === 0) {
+				continue;
+			}
+
+			$conditionalExpression = new ConditionalExpressionHolder($variableTypeGuards, $holder);
+			$conditionalExpressions[$exprString][$conditionalExpression->getKey()] = $conditionalExpression;
+		}
+
+		foreach ($mergedExpressionTypes as $exprString => $mergedExprTypeHolder) {
+			if (array_key_exists($exprString, $ourExpressionTypes)) {
+				continue;
+			}
+
+			$conditionalExpression = new ConditionalExpressionHolder($typeGuards, new ExpressionTypeHolder($mergedExprTypeHolder->getExpr(), new ErrorType(), TrinaryLogic::createNo()));
+			$conditionalExpressions[$exprString][$conditionalExpression->getKey()] = $conditionalExpression;
+		}
+
+		return $conditionalExpressions;
+	}
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $ourVariableTypeHolders
+	 * @param array<string, ExpressionTypeHolder> $theirVariableTypeHolders
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function mergeVariableHolders(array $ourVariableTypeHolders, array $theirVariableTypeHolders): array
+	{
+		$intersectedVariableTypeHolders = [];
+		foreach ($ourVariableTypeHolders as $exprString => $variableTypeHolder) {
+			if (isset($theirVariableTypeHolders[$exprString])) {
+				$intersectedVariableTypeHolders[$exprString] = $variableTypeHolder->and($theirVariableTypeHolders[$exprString]);
+			} else {
+				$intersectedVariableTypeHolders[$exprString] = ExpressionTypeHolder::createMaybe($variableTypeHolder->getExpr(), $variableTypeHolder->getType());
+			}
+		}
+
+		foreach ($theirVariableTypeHolders as $exprString => $variableTypeHolder) {
+			if (isset($intersectedVariableTypeHolders[$exprString])) {
+				continue;
+			}
+
+			$intersectedVariableTypeHolders[$exprString] = ExpressionTypeHolder::createMaybe($variableTypeHolder->getExpr(), $variableTypeHolder->getType());
+		}
+
+		return $intersectedVariableTypeHolders;
+	}
+
+	public function mergeInitializedProperties(self $calledMethodScope): self
+	{
+		$scope = $this;
+		foreach ($calledMethodScope->expressionTypes as $exprString => $typeHolder) {
+			$exprString = (string) $exprString;
+			if (!str_starts_with($exprString, '__phpstanPropertyInitialization(')) {
+				continue;
+			}
+			$propertyName = substr($exprString, strlen('__phpstanPropertyInitialization('), -1);
+			$propertyExpr = new PropertyInitializationExpr($propertyName);
+			if (!array_key_exists($exprString, $scope->expressionTypes)) {
+				$scope = $scope->assignExpression($propertyExpr, new MixedType(), new MixedType());
+				$scope->expressionTypes[$exprString] = $typeHolder;
+				continue;
+			}
+
+			$certainty = $scope->expressionTypes[$exprString]->getCertainty();
+			$scope = $scope->assignExpression($propertyExpr, new MixedType(), new MixedType());
+			$scope->expressionTypes[$exprString] = new ExpressionTypeHolder(
+				$typeHolder->getExpr(),
+				$typeHolder->getType(),
+				$typeHolder->getCertainty()->or($certainty),
+			);
+		}
+
+		return $scope;
+	}
+
+	public function processFinallyScope(self $finallyScope, self $originalFinallyScope): self
+	{
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$this->processFinallyScopeVariableTypeHolders(
+				$this->expressionTypes,
+				$finallyScope->expressionTypes,
+				$originalFinallyScope->expressionTypes,
+			),
+			$this->processFinallyScopeVariableTypeHolders(
+				$this->nativeExpressionTypes,
+				$finallyScope->nativeExpressionTypes,
+				$originalFinallyScope->nativeExpressionTypes,
+			),
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $ourVariableTypeHolders
+	 * @param array<string, ExpressionTypeHolder> $finallyVariableTypeHolders
+	 * @param array<string, ExpressionTypeHolder> $originalVariableTypeHolders
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function processFinallyScopeVariableTypeHolders(
+		array $ourVariableTypeHolders,
+		array $finallyVariableTypeHolders,
+		array $originalVariableTypeHolders,
+	): array
+	{
+		foreach ($finallyVariableTypeHolders as $exprString => $variableTypeHolder) {
+			if (
+				isset($originalVariableTypeHolders[$exprString])
+				&& !$originalVariableTypeHolders[$exprString]->getType()->equals($variableTypeHolder->getType())
+			) {
+				$ourVariableTypeHolders[$exprString] = $variableTypeHolder;
+				continue;
+			}
+
+			if (isset($originalVariableTypeHolders[$exprString])) {
+				continue;
+			}
+
+			$ourVariableTypeHolders[$exprString] = $variableTypeHolder;
+		}
+
+		return $ourVariableTypeHolders;
+	}
+
+	/**
+	 * @param Node\ClosureUse[] $byRefUses
+	 */
+	public function processClosureScope(
+		self $closureScope,
+		?self $prevScope,
+		array $byRefUses,
+	): self
+	{
+		$nativeExpressionTypes = $this->nativeExpressionTypes;
+		$expressionTypes = $this->expressionTypes;
+		if (count($byRefUses) === 0) {
+			return $this;
+		}
+
+		foreach ($byRefUses as $use) {
+			if (!is_string($use->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$variableName = $use->var->name;
+			$variableExprString = '$' . $variableName;
+
+			if (!$closureScope->hasVariableType($variableName)->yes()) {
+				$holder = ExpressionTypeHolder::createYes($use->var, new NullType());
+				$expressionTypes[$variableExprString] = $holder;
+				$nativeExpressionTypes[$variableExprString] = $holder;
+				continue;
+			}
+
+			$variableType = $closureScope->getVariableType($variableName);
+
+			if ($prevScope !== null) {
+				$prevVariableType = $prevScope->getVariableType($variableName);
+				if (!$variableType->equals($prevVariableType)) {
+					$variableType = TypeCombinator::union($variableType, $prevVariableType);
+					$variableType = self::generalizeType($variableType, $prevVariableType, 0);
+				}
+			}
+
+			$expressionTypes[$variableExprString] = ExpressionTypeHolder::createYes($use->var, $variableType);
+			$nativeExpressionTypes[$variableExprString] = ExpressionTypeHolder::createYes($use->var, $variableType);
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeExpressionTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			$this->inFunctionCallsStack,
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function processAlwaysIterableForeachScopeWithoutPollute(self $finalScope): self
+	{
+		$expressionTypes = $this->expressionTypes;
+		foreach ($finalScope->expressionTypes as $variableExprString => $variableTypeHolder) {
+			if (!isset($expressionTypes[$variableExprString])) {
+				$expressionTypes[$variableExprString] = ExpressionTypeHolder::createMaybe($variableTypeHolder->getExpr(), $variableTypeHolder->getType());
+				continue;
+			}
+
+			$expressionTypes[$variableExprString] = new ExpressionTypeHolder(
+				$variableTypeHolder->getExpr(),
+				$variableTypeHolder->getType(),
+				$variableTypeHolder->getCertainty()->and($expressionTypes[$variableExprString]->getCertainty()),
+			);
+		}
+		$nativeTypes = $this->nativeExpressionTypes;
+		foreach ($finalScope->nativeExpressionTypes as $variableExprString => $variableTypeHolder) {
+			if (!isset($nativeTypes[$variableExprString])) {
+				$nativeTypes[$variableExprString] = ExpressionTypeHolder::createMaybe($variableTypeHolder->getExpr(), $variableTypeHolder->getType());
+				continue;
+			}
+
+			$nativeTypes[$variableExprString] = new ExpressionTypeHolder(
+				$variableTypeHolder->getExpr(),
+				$variableTypeHolder->getType(),
+				$variableTypeHolder->getCertainty()->and($nativeTypes[$variableExprString]->getCertainty()),
+			);
+		}
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$expressionTypes,
+			$nativeTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	public function generalizeWith(self $otherScope): self
+	{
+		$variableTypeHolders = $this->generalizeVariableTypeHolders(
+			$this->expressionTypes,
+			$otherScope->expressionTypes,
+		);
+		$nativeTypes = $this->generalizeVariableTypeHolders(
+			$this->nativeExpressionTypes,
+			$otherScope->nativeExpressionTypes,
+		);
+
+		return $this->scopeFactory->create(
+			$this->context,
+			$this->isDeclareStrictTypes(),
+			$this->getFunction(),
+			$this->getNamespace(),
+			$variableTypeHolders,
+			$nativeTypes,
+			$this->conditionalExpressions,
+			$this->inClosureBindScopeClasses,
+			$this->anonymousFunctionReflection,
+			$this->inFirstLevelStatement,
+			[],
+			[],
+			[],
+			$this->afterExtractCall,
+			$this->parentScope,
+			$this->nativeTypesPromoted,
+		);
+	}
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $variableTypeHolders
+	 * @param array<string, ExpressionTypeHolder> $otherVariableTypeHolders
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function generalizeVariableTypeHolders(
+		array $variableTypeHolders,
+		array $otherVariableTypeHolders,
+	): array
+	{
+		foreach ($variableTypeHolders as $variableExprString => $variableTypeHolder) {
+			if (!isset($otherVariableTypeHolders[$variableExprString])) {
+				continue;
+			}
+
+			$variableTypeHolders[$variableExprString] = new ExpressionTypeHolder(
+				$variableTypeHolder->getExpr(),
+				self::generalizeType($variableTypeHolder->getType(), $otherVariableTypeHolders[$variableExprString]->getType(), 0),
+				$variableTypeHolder->getCertainty(),
+			);
+		}
+
+		return $variableTypeHolders;
+	}
+
+	private static function generalizeType(Type $a, Type $b, int $depth): Type
+	{
+		if ($a->equals($b)) {
+			return $a;
+		}
+
+		$constantIntegers = ['a' => [], 'b' => []];
+		$constantFloats = ['a' => [], 'b' => []];
+		$constantBooleans = ['a' => [], 'b' => []];
+		$constantStrings = ['a' => [], 'b' => []];
+		$constantArrays = ['a' => [], 'b' => []];
+		$generalArrays = ['a' => [], 'b' => []];
+		$integerRanges = ['a' => [], 'b' => []];
+		$otherTypes = [];
+
+		foreach ([
+			'a' => TypeUtils::flattenTypes($a),
+			'b' => TypeUtils::flattenTypes($b),
+		] as $key => $types) {
+			foreach ($types as $type) {
+				if ($type instanceof ConstantIntegerType) {
+					$constantIntegers[$key][] = $type;
+					continue;
+				}
+				if ($type instanceof ConstantFloatType) {
+					$constantFloats[$key][] = $type;
+					continue;
+				}
+				if ($type instanceof ConstantBooleanType) {
+					$constantBooleans[$key][] = $type;
+					continue;
+				}
+				if ($type instanceof ConstantStringType) {
+					$constantStrings[$key][] = $type;
+					continue;
+				}
+				if ($type->isConstantArray()->yes()) {
+					$constantArrays[$key][] = $type;
+					continue;
+				}
+				if ($type->isArray()->yes()) {
+					$generalArrays[$key][] = $type;
+					continue;
+				}
+				if ($type instanceof IntegerRangeType) {
+					$integerRanges[$key][] = $type;
+					continue;
+				}
+
+				$otherTypes[] = $type;
+			}
+		}
+
+		$resultTypes = [];
+		foreach ([
+			$constantFloats,
+			$constantBooleans,
+			$constantStrings,
+		] as $constantTypes) {
+			if (count($constantTypes['a']) === 0) {
+				if (count($constantTypes['b']) > 0) {
+					$resultTypes[] = TypeCombinator::union(...$constantTypes['b']);
+				}
+				continue;
+			} elseif (count($constantTypes['b']) === 0) {
+				$resultTypes[] = TypeCombinator::union(...$constantTypes['a']);
+				continue;
+			}
+
+			$aTypes = TypeCombinator::union(...$constantTypes['a']);
+			$bTypes = TypeCombinator::union(...$constantTypes['b']);
+			if ($aTypes->equals($bTypes)) {
+				$resultTypes[] = $aTypes;
+				continue;
+			}
+
+			$resultTypes[] = TypeCombinator::union(...$constantTypes['a'], ...$constantTypes['b'])->generalize(GeneralizePrecision::moreSpecific());
+		}
+
+		if (count($constantArrays['a']) > 0) {
+			if (count($constantArrays['b']) === 0) {
+				$resultTypes[] = TypeCombinator::union(...$constantArrays['a']);
+			} else {
+				$constantArraysA = TypeCombinator::union(...$constantArrays['a']);
+				$constantArraysB = TypeCombinator::union(...$constantArrays['b']);
+				if ($constantArraysA->getIterableKeyType()->equals($constantArraysB->getIterableKeyType())) {
+					$resultArrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+					foreach (TypeUtils::flattenTypes($constantArraysA->getIterableKeyType()) as $keyType) {
+						$resultArrayBuilder->setOffsetValueType(
+							$keyType,
+							self::generalizeType(
+								$constantArraysA->getOffsetValueType($keyType),
+								$constantArraysB->getOffsetValueType($keyType),
+								$depth + 1,
+							),
+							!$constantArraysA->hasOffsetValueType($keyType)->and($constantArraysB->hasOffsetValueType($keyType))->negate()->no(),
+						);
+					}
+
+					$resultTypes[] = $resultArrayBuilder->getArray();
+				} else {
+					$resultType = new ArrayType(
+						TypeCombinator::union(self::generalizeType($constantArraysA->getIterableKeyType(), $constantArraysB->getIterableKeyType(), $depth + 1)),
+						TypeCombinator::union(self::generalizeType($constantArraysA->getIterableValueType(), $constantArraysB->getIterableValueType(), $depth + 1)),
+					);
+					if ($constantArraysA->isIterableAtLeastOnce()->yes() && $constantArraysB->isIterableAtLeastOnce()->yes()) {
+						$resultType = TypeCombinator::intersect($resultType, new NonEmptyArrayType());
+					}
+					if ($constantArraysA->isList()->yes() && $constantArraysB->isList()->yes()) {
+						$resultType = TypeCombinator::intersect($resultType, new AccessoryArrayListType());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+		} elseif (count($constantArrays['b']) > 0) {
+			$resultTypes[] = TypeCombinator::union(...$constantArrays['b']);
+		}
+
+		if (count($generalArrays['a']) > 0) {
+			if (count($generalArrays['b']) === 0) {
+				$resultTypes[] = TypeCombinator::union(...$generalArrays['a']);
+			} else {
+				$generalArraysA = TypeCombinator::union(...$generalArrays['a']);
+				$generalArraysB = TypeCombinator::union(...$generalArrays['b']);
+
+				$aValueType = $generalArraysA->getIterableValueType();
+				$bValueType = $generalArraysB->getIterableValueType();
+				if (
+					$aValueType->isArray()->yes()
+					&& $aValueType->isConstantArray()->no()
+					&& $bValueType->isArray()->yes()
+					&& $bValueType->isConstantArray()->no()
+				) {
+					$aDepth = self::getArrayDepth($aValueType) + $depth;
+					$bDepth = self::getArrayDepth($bValueType) + $depth;
+					if (
+						($aDepth > 2 || $bDepth > 2)
+						&& abs($aDepth - $bDepth) > 0
+					) {
+						$aValueType = new MixedType();
+						$bValueType = new MixedType();
+					}
+				}
+
+				$resultType = new ArrayType(
+					TypeCombinator::union(self::generalizeType($generalArraysA->getIterableKeyType(), $generalArraysB->getIterableKeyType(), $depth + 1)),
+					TypeCombinator::union(self::generalizeType($aValueType, $bValueType, $depth + 1)),
+				);
+				if ($generalArraysA->isIterableAtLeastOnce()->yes() && $generalArraysB->isIterableAtLeastOnce()->yes()) {
+					$resultType = TypeCombinator::intersect($resultType, new NonEmptyArrayType());
+				}
+				if ($generalArraysA->isList()->yes() && $generalArraysB->isList()->yes()) {
+					$resultType = TypeCombinator::intersect($resultType, new AccessoryArrayListType());
+				}
+				if ($generalArraysA->isOversizedArray()->yes() && $generalArraysB->isOversizedArray()->yes()) {
+					$resultType = TypeCombinator::intersect($resultType, new OversizedArrayType());
+				}
+				$resultTypes[] = $resultType;
+			}
+		} elseif (count($generalArrays['b']) > 0) {
+			$resultTypes[] = TypeCombinator::union(...$generalArrays['b']);
+		}
+
+		if (count($constantIntegers['a']) > 0) {
+			if (count($constantIntegers['b']) === 0) {
+				$resultTypes[] = TypeCombinator::union(...$constantIntegers['a']);
+			} else {
+				$constantIntegersA = TypeCombinator::union(...$constantIntegers['a']);
+				$constantIntegersB = TypeCombinator::union(...$constantIntegers['b']);
+
+				if ($constantIntegersA->equals($constantIntegersB)) {
+					$resultTypes[] = $constantIntegersA;
+				} else {
+					$min = null;
+					$max = null;
+					foreach ($constantIntegers['a'] as $int) {
+						if ($min === null || $int->getValue() < $min) {
+							$min = $int->getValue();
+						}
+						if ($max !== null && $int->getValue() <= $max) {
+							continue;
+						}
+
+						$max = $int->getValue();
+					}
+
+					$gotGreater = false;
+					$gotSmaller = false;
+					foreach ($constantIntegers['b'] as $int) {
+						if ($int->getValue() > $max) {
+							$gotGreater = true;
+						}
+						if ($int->getValue() >= $min) {
+							continue;
+						}
+
+						$gotSmaller = true;
+					}
+
+					if ($gotGreater && $gotSmaller) {
+						$resultTypes[] = new IntegerType();
+					} elseif ($gotGreater) {
+						$resultTypes[] = IntegerRangeType::fromInterval($min, null);
+					} elseif ($gotSmaller) {
+						$resultTypes[] = IntegerRangeType::fromInterval(null, $max);
+					} else {
+						$resultTypes[] = TypeCombinator::union($constantIntegersA, $constantIntegersB);
+					}
+				}
+			}
+		} elseif (count($constantIntegers['b']) > 0) {
+			$resultTypes[] = TypeCombinator::union(...$constantIntegers['b']);
+		}
+
+		if (count($integerRanges['a']) > 0) {
+			if (count($integerRanges['b']) === 0) {
+				$resultTypes[] = TypeCombinator::union(...$integerRanges['a']);
+			} else {
+				$integerRangesA = TypeCombinator::union(...$integerRanges['a']);
+				$integerRangesB = TypeCombinator::union(...$integerRanges['b']);
+
+				if ($integerRangesA->equals($integerRangesB)) {
+					$resultTypes[] = $integerRangesA;
+				} else {
+					$min = null;
+					$max = null;
+					foreach ($integerRanges['a'] as $range) {
+						if ($range->getMin() === null) {
+							$rangeMin = PHP_INT_MIN;
+						} else {
+							$rangeMin = $range->getMin();
+						}
+						if ($range->getMax() === null) {
+							$rangeMax = PHP_INT_MAX;
+						} else {
+							$rangeMax = $range->getMax();
+						}
+
+						if ($min === null || $rangeMin < $min) {
+							$min = $rangeMin;
+						}
+						if ($max !== null && $rangeMax <= $max) {
+							continue;
+						}
+
+						$max = $rangeMax;
+					}
+
+					$gotGreater = false;
+					$gotSmaller = false;
+					foreach ($integerRanges['b'] as $range) {
+						if ($range->getMin() === null) {
+							$rangeMin = PHP_INT_MIN;
+						} else {
+							$rangeMin = $range->getMin();
+						}
+						if ($range->getMax() === null) {
+							$rangeMax = PHP_INT_MAX;
+						} else {
+							$rangeMax = $range->getMax();
+						}
+
+						if ($rangeMax > $max) {
+							$gotGreater = true;
+						}
+						if ($rangeMin >= $min) {
+							continue;
+						}
+
+						$gotSmaller = true;
+					}
+
+					if ($min === PHP_INT_MIN) {
+						$min = null;
+					}
+					if ($max === PHP_INT_MAX) {
+						$max = null;
+					}
+
+					if ($gotGreater && $gotSmaller) {
+						$resultTypes[] = new IntegerType();
+					} elseif ($gotGreater) {
+						$resultTypes[] = IntegerRangeType::fromInterval($min, null);
+					} elseif ($gotSmaller) {
+						$resultTypes[] = IntegerRangeType::fromInterval(null, $max);
+					} else {
+						$resultTypes[] = TypeCombinator::union($integerRangesA, $integerRangesB);
+					}
+				}
+			}
+		} elseif (count($integerRanges['b']) > 0) {
+			$resultTypes[] = TypeCombinator::union(...$integerRanges['b']);
+		}
+
+		$accessoryTypes = array_map(
+			static fn (Type $type): Type => $type->generalize(GeneralizePrecision::moreSpecific()),
+			TypeUtils::getAccessoryTypes($a),
+		);
+
+		return TypeCombinator::union(TypeCombinator::intersect(
+			TypeCombinator::union(...$resultTypes, ...$otherTypes),
+			...$accessoryTypes,
+		), ...$otherTypes);
+	}
+
+	private static function getArrayDepth(Type $type): int
+	{
+		$depth = 0;
+		$arrays = TypeUtils::toBenevolentUnion($type)->getArrays();
+		while (count($arrays) > 0) {
+			$temp = $type->getIterableValueType();
+			$type = $temp;
+			$arrays = TypeUtils::toBenevolentUnion($type)->getArrays();
+			$depth++;
+		}
+
+		return $depth;
+	}
+
+	public function equals(self $otherScope): bool
+	{
+		if (!$this->context->equals($otherScope->context)) {
+			return false;
+		}
+
+		if (!$this->compareVariableTypeHolders($this->expressionTypes, $otherScope->expressionTypes)) {
+			return false;
+		}
+		return $this->compareVariableTypeHolders($this->nativeExpressionTypes, $otherScope->nativeExpressionTypes);
+	}
+
+	/**
+	 * @param array<string, ExpressionTypeHolder> $variableTypeHolders
+	 * @param array<string, ExpressionTypeHolder> $otherVariableTypeHolders
+	 */
+	private function compareVariableTypeHolders(array $variableTypeHolders, array $otherVariableTypeHolders): bool
+	{
+		if (count($variableTypeHolders) !== count($otherVariableTypeHolders)) {
+			return false;
+		}
+		foreach ($variableTypeHolders as $variableExprString => $variableTypeHolder) {
+			if (!isset($otherVariableTypeHolders[$variableExprString])) {
+				return false;
+			}
+
+			if (!$variableTypeHolder->getCertainty()->equals($otherVariableTypeHolders[$variableExprString]->getCertainty())) {
+				return false;
+			}
+
+			if (!$variableTypeHolder->getType()->equals($otherVariableTypeHolders[$variableExprString]->getType())) {
+				return false;
+			}
+
+			unset($otherVariableTypeHolders[$variableExprString]);
+		}
+
+		return true;
+	}
+
+	private function getBooleanExpressionDepth(Expr $expr, int $depth = 0): int
+	{
+		while (
+			$expr instanceof BinaryOp\BooleanOr
+			|| $expr instanceof BinaryOp\LogicalOr
+			|| $expr instanceof BinaryOp\BooleanAnd
+			|| $expr instanceof BinaryOp\LogicalAnd
+		) {
+			return $this->getBooleanExpressionDepth($expr->left, $depth + 1);
+		}
+
+		return $depth;
+	}
+
+	/**
+	 * @api
+	 * @deprecated Use canReadProperty() or canWriteProperty()
+	 */
+	public function canAccessProperty(PropertyReflection $propertyReflection): bool
+	{
+		return $this->canAccessClassMember($propertyReflection);
+	}
+
+	/** @api */
+	public function canReadProperty(ExtendedPropertyReflection $propertyReflection): bool
+	{
+		return $this->canAccessClassMember($propertyReflection);
+	}
+
+	/** @api */
+	public function canWriteProperty(ExtendedPropertyReflection $propertyReflection): bool
+	{
+		if (!$propertyReflection->isPrivateSet() && !$propertyReflection->isProtectedSet()) {
+			return $this->canAccessClassMember($propertyReflection);
+		}
+
+		if (!$this->phpVersion->supportsAsymmetricVisibility()) {
+			return $this->canAccessClassMember($propertyReflection);
+		}
+
+		$classReflectionName = $propertyReflection->getDeclaringClass()->getName();
+		$canAccessClassMember = static function (ClassReflection $classReflection) use ($propertyReflection, $classReflectionName) {
+			if ($propertyReflection->isPrivateSet()) {
+				return $classReflection->getName() === $classReflectionName;
+			}
+
+			// protected set
+
+			if (
+				$classReflection->getName() === $classReflectionName
+				|| $classReflection->isSubclassOf($classReflectionName)
+			) {
+				return true;
+			}
+
+			return $propertyReflection->getDeclaringClass()->isSubclassOf($classReflection->getName());
+		};
+
+		foreach ($this->inClosureBindScopeClasses as $inClosureBindScopeClass) {
+			if (!$this->reflectionProvider->hasClass($inClosureBindScopeClass)) {
+				continue;
+			}
+
+			if ($canAccessClassMember($this->reflectionProvider->getClass($inClosureBindScopeClass))) {
+				return true;
+			}
+		}
+
+		if ($this->isInClass()) {
+			return $canAccessClassMember($this->getClassReflection());
+		}
+
+		return false;
+	}
+
+	/** @api */
+	public function canCallMethod(MethodReflection $methodReflection): bool
+	{
+		if ($this->canAccessClassMember($methodReflection)) {
+			return true;
+		}
+
+		return $this->canAccessClassMember($methodReflection->getPrototype());
+	}
+
+	/** @api */
+	public function canAccessConstant(ClassConstantReflection $constantReflection): bool
+	{
+		return $this->canAccessClassMember($constantReflection);
+	}
+
+	private function canAccessClassMember(ClassMemberReflection $classMemberReflection): bool
+	{
+		if ($classMemberReflection->isPublic()) {
+			return true;
+		}
+
+		$classReflectionName = $classMemberReflection->getDeclaringClass()->getName();
+		$canAccessClassMember = static function (ClassReflection $classReflection) use ($classMemberReflection, $classReflectionName) {
+			if ($classMemberReflection->isPrivate()) {
+				return $classReflection->getName() === $classReflectionName;
+			}
+
+			// protected
+
+			if (
+				$classReflection->getName() === $classReflectionName
+				|| $classReflection->isSubclassOf($classReflectionName)
+			) {
+				return true;
+			}
+
+			return $classMemberReflection->getDeclaringClass()->isSubclassOf($classReflection->getName());
+		};
+
+		foreach ($this->inClosureBindScopeClasses as $inClosureBindScopeClass) {
+			if (!$this->reflectionProvider->hasClass($inClosureBindScopeClass)) {
+				continue;
+			}
+
+			if ($canAccessClassMember($this->reflectionProvider->getClass($inClosureBindScopeClass))) {
+				return true;
+			}
+		}
+
+		if ($this->isInClass()) {
+			return $canAccessClassMember($this->getClassReflection());
+		}
+
+		return false;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function debug(): array
+	{
+		$descriptions = [];
+		foreach ($this->expressionTypes as $name => $variableTypeHolder) {
+			$key = sprintf('%s (%s)', $name, $variableTypeHolder->getCertainty()->describe());
+			$descriptions[$key] = $variableTypeHolder->getType()->describe(VerbosityLevel::precise());
+		}
+		foreach ($this->nativeExpressionTypes as $exprString => $nativeTypeHolder) {
+			$key = sprintf('native %s (%s)', $exprString, $nativeTypeHolder->getCertainty()->describe());
+			$descriptions[$key] = $nativeTypeHolder->getType()->describe(VerbosityLevel::precise());
+		}
+
+		foreach ($this->conditionalExpressions as $exprString => $holders) {
+			foreach (array_values($holders) as $i => $holder) {
+				$key = sprintf('condition about %s #%d', $exprString, $i + 1);
+				$parts = [];
+				foreach ($holder->getConditionExpressionTypeHolders() as $conditionalExprString => $expressionTypeHolder) {
+					$parts[] = $conditionalExprString . '=' . $expressionTypeHolder->getType()->describe(VerbosityLevel::precise());
+				}
+				$condition = implode(' && ', $parts);
+				$descriptions[$key] = sprintf(
+					'if %s then %s is %s (%s)',
+					$condition,
+					$exprString,
+					$holder->getTypeHolder()->getType()->describe(VerbosityLevel::precise()),
+					$holder->getTypeHolder()->getCertainty()->describe(),
+				);
+			}
+		}
+
+		return $descriptions;
+	}
+
+	/**
+	 * @param non-empty-string $className
+	 */
+	private function exactInstantiation(New_ $node, string $className): ?Type
+	{
+		$resolvedClassName = $this->resolveExactName(new Name($className));
+		$isStatic = false;
+		if ($resolvedClassName === null) {
+			if (strtolower($className) !== 'static') {
+				return null;
+			}
+
+			if (!$this->isInClass()) {
+				return null;
+			}
+			$resolvedClassName = $this->getClassReflection()->getName();
+			$isStatic = true;
+		}
+
+		if (!$this->reflectionProvider->hasClass($resolvedClassName)) {
+			return null;
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($resolvedClassName);
+		if ($classReflection->hasConstructor()) {
+			$constructorMethod = $classReflection->getConstructor();
+		} else {
+			$constructorMethod = new DummyConstructorReflection($classReflection);
+		}
+
+		$resolvedTypes = [];
+		$methodCall = new Expr\StaticCall(
+			new Name($resolvedClassName),
+			new Node\Identifier($constructorMethod->getName()),
+			$node->getArgs(),
+		);
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$this,
+			$methodCall->getArgs(),
+			$constructorMethod->getVariants(),
+			$constructorMethod->getNamedArgumentsVariants(),
+		);
+		$normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
+
+		if ($normalizedMethodCall !== null) {
+			foreach ($this->dynamicReturnTypeExtensionRegistry->getDynamicStaticMethodReturnTypeExtensionsForClass($classReflection->getName()) as $dynamicStaticMethodReturnTypeExtension) {
+				if (!$dynamicStaticMethodReturnTypeExtension->isStaticMethodSupported($constructorMethod)) {
+					continue;
+				}
+
+				$resolvedType = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall(
+					$constructorMethod,
+					$normalizedMethodCall,
+					$this,
+				);
+				if ($resolvedType === null) {
+					continue;
+				}
+
+				$resolvedTypes[] = $resolvedType;
+			}
+		}
+
+		if (count($resolvedTypes) > 0) {
+			return TypeCombinator::union(...$resolvedTypes);
+		}
+
+		$methodResult = $this->getType($methodCall);
+		if ($methodResult instanceof NeverType && $methodResult->isExplicit()) {
+			return $methodResult;
+		}
+
+		$objectType = $isStatic ? new StaticType($classReflection) : new ObjectType($resolvedClassName);
+		if (!$classReflection->isGeneric()) {
+			return $objectType;
+		}
+
+		$assignedToProperty = $node->getAttribute(NewAssignedToPropertyVisitor::ATTRIBUTE_NAME);
+		if ($assignedToProperty !== null) {
+			$constructorVariant = $constructorMethod->getOnlyVariant();
+			$classTemplateTypes = $classReflection->getTemplateTypeMap()->getTypes();
+			$originalClassTemplateTypes = $classTemplateTypes;
+			foreach ($constructorVariant->getParameters() as $parameter) {
+				TypeTraverser::map($parameter->getType(), static function (Type $type, callable $traverse) use (&$classTemplateTypes): Type {
+					if ($type instanceof TemplateType && array_key_exists($type->getName(), $classTemplateTypes)) {
+						$classTemplateType = $classTemplateTypes[$type->getName()];
+						if ($classTemplateType instanceof TemplateType && $classTemplateType->getScope()->equals($type->getScope())) {
+							unset($classTemplateTypes[$type->getName()]);
+						}
+						return $type;
+					}
+
+					return $traverse($type);
+				});
+			}
+
+			if (count($classTemplateTypes) === count($originalClassTemplateTypes)) {
+				$propertyType = TypeCombinator::removeNull($this->getType($assignedToProperty));
+				if ($objectType->isSuperTypeOf($propertyType)->yes()) {
+					return $propertyType;
+				}
+			}
+		}
+
+		if ($constructorMethod instanceof DummyConstructorReflection) {
+			if ($isStatic) {
+				return new GenericStaticType(
+					$classReflection,
+					$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+					null,
+					[],
+				);
+			}
+			return new GenericObjectType(
+				$resolvedClassName,
+				$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+			);
+		}
+
+		if ($constructorMethod->getDeclaringClass()->getName() !== $classReflection->getName()) {
+			if (!$constructorMethod->getDeclaringClass()->isGeneric()) {
+				if ($isStatic) {
+					return new GenericStaticType(
+						$classReflection,
+						$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+						null,
+						[],
+					);
+				}
+
+				return new GenericObjectType(
+					$resolvedClassName,
+					$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				);
+			}
+			$newType = new GenericObjectType($resolvedClassName, $classReflection->typeMapToList($classReflection->getTemplateTypeMap()));
+			$ancestorType = $newType->getAncestorWithClassName($constructorMethod->getDeclaringClass()->getName());
+			if ($ancestorType === null) {
+				if ($isStatic) {
+					return new GenericStaticType(
+						$classReflection,
+						$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+						null,
+						[],
+					);
+				}
+
+				return new GenericObjectType(
+					$resolvedClassName,
+					$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				);
+			}
+			$ancestorClassReflections = $ancestorType->getObjectClassReflections();
+			if (count($ancestorClassReflections) !== 1) {
+				if ($isStatic) {
+					return new GenericStaticType(
+						$classReflection,
+						$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+						null,
+						[],
+					);
+				}
+
+				return new GenericObjectType(
+					$resolvedClassName,
+					$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				);
+			}
+
+			$newParentNode = new New_(new Name($constructorMethod->getDeclaringClass()->getName()), $node->args);
+			$newParentType = $this->getType($newParentNode);
+			$newParentTypeClassReflections = $newParentType->getObjectClassReflections();
+			if (count($newParentTypeClassReflections) !== 1) {
+				if ($isStatic) {
+					return new GenericStaticType(
+						$classReflection,
+						$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+						null,
+						[],
+					);
+				}
+
+				return new GenericObjectType(
+					$resolvedClassName,
+					$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				);
+			}
+			$newParentTypeClassReflection = $newParentTypeClassReflections[0];
+
+			$ancestorClassReflection = $ancestorClassReflections[0];
+			$ancestorMapping = [];
+			foreach ($ancestorClassReflection->getActiveTemplateTypeMap()->getTypes() as $typeName => $templateType) {
+				if (!$templateType instanceof TemplateType) {
+					continue;
+				}
+
+				$ancestorMapping[$typeName] = $templateType;
+			}
+
+			$resolvedTypeMap = [];
+			foreach ($newParentTypeClassReflection->getActiveTemplateTypeMap()->getTypes() as $typeName => $type) {
+				if (!array_key_exists($typeName, $ancestorMapping)) {
+					continue;
+				}
+
+				$ancestorType = $ancestorMapping[$typeName];
+				if (!$ancestorType->getBound()->isSuperTypeOf($type)->yes()) {
+					continue;
+				}
+
+				if (!array_key_exists($ancestorType->getName(), $resolvedTypeMap)) {
+					$resolvedTypeMap[$ancestorType->getName()] = $type;
+					continue;
+				}
+
+				$resolvedTypeMap[$ancestorType->getName()] = TypeCombinator::union($resolvedTypeMap[$ancestorType->getName()], $type);
+			}
+
+			if ($isStatic) {
+				return new GenericStaticType(
+					$classReflection,
+					$classReflection->typeMapToList(new TemplateTypeMap($resolvedTypeMap)),
+					null,
+					[],
+				);
+			}
+
+			return new GenericObjectType(
+				$resolvedClassName,
+				$classReflection->typeMapToList(new TemplateTypeMap($resolvedTypeMap)),
+			);
+		}
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$this,
+			$methodCall->getArgs(),
+			$constructorMethod->getVariants(),
+			$constructorMethod->getNamedArgumentsVariants(),
+		);
+
+		$resolvedTemplateTypeMap = $parametersAcceptor->getResolvedTemplateTypeMap();
+		$newGenericType = new GenericObjectType(
+			$resolvedClassName,
+			$classReflection->typeMapToList($classReflection->getTemplateTypeMap()),
+		);
+		if ($isStatic) {
+			$newGenericType = new GenericStaticType(
+				$classReflection,
+				$classReflection->typeMapToList($classReflection->getTemplateTypeMap()),
+				null,
+				[],
+			);
+		}
+		return TypeTraverser::map($newGenericType, static function (Type $type, callable $traverse) use ($resolvedTemplateTypeMap): Type {
+			if ($type instanceof TemplateType && !$type->isArgument()) {
+				$newType = $resolvedTemplateTypeMap->getType($type->getName());
+				if ($newType === null || $newType instanceof ErrorType) {
+					return $type->getDefault() ?? $type->getBound();
+				}
+
+				return TemplateTypeHelper::generalizeInferredTemplateType($type, $newType);
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	private function filterTypeWithMethod(Type $typeWithMethod, string $methodName): ?Type
+	{
+		if ($typeWithMethod instanceof UnionType) {
+			$typeWithMethod = $typeWithMethod->filterTypes(static fn (Type $innerType) => $innerType->hasMethod($methodName)->yes());
+		}
+
+		if (!$typeWithMethod->hasMethod($methodName)->yes()) {
+			return null;
+		}
+
+		return $typeWithMethod;
+	}
+
+	/** @api */
+	public function getMethodReflection(Type $typeWithMethod, string $methodName): ?ExtendedMethodReflection
+	{
+		$type = $this->filterTypeWithMethod($typeWithMethod, $methodName);
+		if ($type === null) {
+			return null;
+		}
+
+		return $type->getMethod($methodName, $this);
+	}
+
+	public function getNakedMethod(Type $typeWithMethod, string $methodName): ?ExtendedMethodReflection
+	{
+		$type = $this->filterTypeWithMethod($typeWithMethod, $methodName);
+		if ($type === null) {
+			return null;
+		}
+
+		return $type->getUnresolvedMethodPrototype($methodName, $this)->getNakedMethod();
+	}
+
+	/**
+	 * @param MethodCall|Node\Expr\StaticCall $methodCall
+	 */
+	private function methodCallReturnType(Type $typeWithMethod, string $methodName, Expr $methodCall): ?Type
+	{
+		$typeWithMethod = $this->filterTypeWithMethod($typeWithMethod, $methodName);
+		if ($typeWithMethod === null) {
+			return null;
+		}
+
+		$methodReflection = $typeWithMethod->getMethod($methodName, $this);
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$this,
+			$methodCall->getArgs(),
+			$methodReflection->getVariants(),
+			$methodReflection->getNamedArgumentsVariants(),
+		);
+		if ($methodCall instanceof MethodCall) {
+			$normalizedMethodCall = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $methodCall);
+		} else {
+			$normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
+		}
+		if ($normalizedMethodCall === null) {
+			return $this->transformVoidToNull($parametersAcceptor->getReturnType(), $methodCall);
+		}
+
+		$resolvedTypes = [];
+		foreach ($typeWithMethod->getObjectClassNames() as $className) {
+			if ($normalizedMethodCall instanceof MethodCall) {
+				foreach ($this->dynamicReturnTypeExtensionRegistry->getDynamicMethodReturnTypeExtensionsForClass($className) as $dynamicMethodReturnTypeExtension) {
+					if (!$dynamicMethodReturnTypeExtension->isMethodSupported($methodReflection)) {
+						continue;
+					}
+
+					$resolvedType = $dynamicMethodReturnTypeExtension->getTypeFromMethodCall($methodReflection, $normalizedMethodCall, $this);
+					if ($resolvedType === null) {
+						continue;
+					}
+
+					$resolvedTypes[] = $resolvedType;
+				}
+			} else {
+				foreach ($this->dynamicReturnTypeExtensionRegistry->getDynamicStaticMethodReturnTypeExtensionsForClass($className) as $dynamicStaticMethodReturnTypeExtension) {
+					if (!$dynamicStaticMethodReturnTypeExtension->isStaticMethodSupported($methodReflection)) {
+						continue;
+					}
+
+					$resolvedType = $dynamicStaticMethodReturnTypeExtension->getTypeFromStaticMethodCall(
+						$methodReflection,
+						$normalizedMethodCall,
+						$this,
+					);
+					if ($resolvedType === null) {
+						continue;
+					}
+
+					$resolvedTypes[] = $resolvedType;
+				}
+			}
+		}
+
+		if (count($resolvedTypes) > 0) {
+			return $this->transformVoidToNull(TypeCombinator::union(...$resolvedTypes), $methodCall);
+		}
+
+		return $this->transformVoidToNull($parametersAcceptor->getReturnType(), $methodCall);
+	}
+
+	/** @api */
+	public function getPropertyReflection(Type $typeWithProperty, string $propertyName): ?ExtendedPropertyReflection
+	{
+		if ($typeWithProperty instanceof UnionType) {
+			$typeWithProperty = $typeWithProperty->filterTypes(static fn (Type $innerType) => $innerType->hasProperty($propertyName)->yes());
+		}
+		if (!$typeWithProperty->hasProperty($propertyName)->yes()) {
+			return null;
+		}
+
+		return $typeWithProperty->getProperty($propertyName, $this);
+	}
+
+	/**
+	 * @param PropertyFetch|Node\Expr\StaticPropertyFetch $propertyFetch
+	 */
+	private function propertyFetchType(Type $fetchedOnType, string $propertyName, Expr $propertyFetch): ?Type
+	{
+		$propertyReflection = $this->getPropertyReflection($fetchedOnType, $propertyName);
+		if ($propertyReflection === null) {
+			return null;
+		}
+
+		if ($this->isInExpressionAssign($propertyFetch)) {
+			return $propertyReflection->getWritableType();
+		}
+
+		return $propertyReflection->getReadableType();
+	}
+
+	public function getConstantReflection(Type $typeWithConstant, string $constantName): ?ClassConstantReflection
+	{
+		if ($typeWithConstant instanceof UnionType) {
+			$typeWithConstant = $typeWithConstant->filterTypes(static fn (Type $innerType) => $innerType->hasConstant($constantName)->yes());
+		}
+		if (!$typeWithConstant->hasConstant($constantName)->yes()) {
+			return null;
+		}
+
+		return $typeWithConstant->getConstant($constantName);
+	}
+
+	/**
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function getConstantTypes(): array
+	{
+		$constantTypes = [];
+		foreach ($this->expressionTypes as $exprString => $typeHolder) {
+			$expr = $typeHolder->getExpr();
+			if (!$expr instanceof ConstFetch) {
+				continue;
+			}
+			$constantTypes[$exprString] = $typeHolder;
+		}
+		return $constantTypes;
+	}
+
+	private function getGlobalConstantType(Name $name): ?Type
+	{
+		$fetches = [];
+		if (!$name->isFullyQualified() && $this->getNamespace() !== null) {
+			$fetches[] = new ConstFetch(new FullyQualified([$this->getNamespace(), $name->toString()]));
+		}
+
+		$fetches[] = new ConstFetch(new FullyQualified($name->toString()));
+		$fetches[] = new ConstFetch($name);
+
+		foreach ($fetches as $constFetch) {
+			if ($this->hasExpressionType($constFetch)->yes()) {
+				return $this->getType($constFetch);
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return array<string, ExpressionTypeHolder>
+	 */
+	private function getNativeConstantTypes(): array
+	{
+		$constantTypes = [];
+		foreach ($this->nativeExpressionTypes as $exprString => $typeHolder) {
+			$expr = $typeHolder->getExpr();
+			if (!$expr instanceof ConstFetch) {
+				continue;
+			}
+			$constantTypes[$exprString] = $typeHolder;
+		}
+		return $constantTypes;
+	}
+
+	public function getIterableKeyType(Type $iteratee): Type
+	{
+		if ($iteratee instanceof UnionType) {
+			$filtered = $iteratee->filterTypes(static fn (Type $innerType) => $innerType->isIterable()->yes());
+			if (!$filtered instanceof NeverType) {
+				$iteratee = $filtered;
+			}
+		}
+
+		return $iteratee->getIterableKeyType();
+	}
+
+	public function getIterableValueType(Type $iteratee): Type
+	{
+		if ($iteratee instanceof UnionType) {
+			$filtered = $iteratee->filterTypes(static fn (Type $innerType) => $innerType->isIterable()->yes());
+			if (!$filtered instanceof NeverType) {
+				$iteratee = $filtered;
+			}
+		}
+
+		return $iteratee->getIterableValueType();
+	}
+
+	public function getPhpVersion(): PhpVersions
+	{
+		$constType = $this->getGlobalConstantType(new Name('PHP_VERSION_ID'));
+		if ($constType !== null) {
+			return new PhpVersions($constType);
+		}
+
+		if (is_array($this->configPhpVersion)) {
+			return new PhpVersions(IntegerRangeType::fromInterval($this->configPhpVersion['min'], $this->configPhpVersion['max']));
+		}
+		return new PhpVersions(new ConstantIntegerType($this->phpVersion->getVersionId()));
+	}
+
+}
diff --git a/src/Analyser/NameScope.php b/src/Analyser/NameScope.php
new file mode 100644
index 00000000..ccc487c0
--- /dev/null
+++ b/src/Analyser/NameScope.php
@@ -0,0 +1,226 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Type;
+use function array_key_exists;
+use function array_merge;
+use function array_shift;
+use function count;
+use function explode;
+use function implode;
+use function ltrim;
+use function sprintf;
+use function str_starts_with;
+use function strtolower;
+
+/**
+ * @api
+ */
+final class NameScope
+{
+
+	private TemplateTypeMap $templateTypeMap;
+
+	/**
+	 * @api
+	 * @param non-empty-string|null $namespace
+	 * @param array<string, string> $uses alias(string) => fullName(string)
+	 * @param array<string, string> $constUses alias(string) => fullName(string)
+	 * @param array<string, true> $typeAliasesMap
+	 */
+	public function __construct(private ?string $namespace, private array $uses, private ?string $className = null, private ?string $functionName = null, ?TemplateTypeMap $templateTypeMap = null, private array $typeAliasesMap = [], private bool $bypassTypeAliases = false, private array $constUses = [], private ?string $typeAliasClassName = null)
+	{
+		$this->templateTypeMap = $templateTypeMap ?? TemplateTypeMap::createEmpty();
+	}
+
+	public function getNamespace(): ?string
+	{
+		return $this->namespace;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	public function getUses(): array
+	{
+		return $this->uses;
+	}
+
+	public function hasUseAlias(string $name): bool
+	{
+		return isset($this->uses[strtolower($name)]);
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	public function getConstUses(): array
+	{
+		return $this->constUses;
+	}
+
+	public function getClassName(): ?string
+	{
+		return $this->className;
+	}
+
+	public function getClassNameForTypeAlias(): ?string
+	{
+		return $this->typeAliasClassName ?? $this->className;
+	}
+
+	public function resolveStringName(string $name): string
+	{
+		if (str_starts_with($name, '\\')) {
+			return ltrim($name, '\\');
+		}
+
+		$nameParts = explode('\\', $name);
+		$firstNamePart = strtolower($nameParts[0]);
+		if (isset($this->uses[$firstNamePart])) {
+			if (count($nameParts) === 1) {
+				return $this->uses[$firstNamePart];
+			}
+			array_shift($nameParts);
+			return sprintf('%s\\%s', $this->uses[$firstNamePart], implode('\\', $nameParts));
+		}
+
+		if ($this->namespace !== null) {
+			return sprintf('%s\\%s', $this->namespace, $name);
+		}
+
+		return $name;
+	}
+
+	/**
+	 * @return non-empty-list<string>
+	 */
+	public function resolveConstantNames(string $name): array
+	{
+		if (str_starts_with($name, '\\')) {
+			return [ltrim($name, '\\')];
+		}
+
+		$nameParts = explode('\\', $name);
+		$firstNamePart = strtolower($nameParts[0]);
+
+		if (count($nameParts) > 1) {
+			if (isset($this->uses[$firstNamePart])) {
+				array_shift($nameParts);
+				return [sprintf('%s\\%s', $this->uses[$firstNamePart], implode('\\', $nameParts))];
+			}
+		} elseif (isset($this->constUses[$firstNamePart])) {
+			return [$this->constUses[$firstNamePart]];
+		}
+
+		if ($this->namespace !== null) {
+			return [
+				sprintf('%s\\%s', $this->namespace, $name),
+				$name,
+			];
+		}
+
+		return [$name];
+	}
+
+	public function getTemplateTypeScope(): ?TemplateTypeScope
+	{
+		if ($this->className !== null) {
+			if ($this->functionName !== null) {
+				return TemplateTypeScope::createWithMethod($this->className, $this->functionName);
+			}
+
+			return TemplateTypeScope::createWithClass($this->className);
+		}
+
+		if ($this->functionName !== null) {
+			return TemplateTypeScope::createWithFunction($this->functionName);
+		}
+
+		return null;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function resolveTemplateTypeName(string $name): ?Type
+	{
+		return $this->templateTypeMap->getType($name);
+	}
+
+	public function withTemplateTypeMap(TemplateTypeMap $map): self
+	{
+		if ($map->isEmpty() && $this->templateTypeMap->isEmpty()) {
+			return $this;
+		}
+
+		return new self(
+			$this->namespace,
+			$this->uses,
+			$this->className,
+			$this->functionName,
+			new TemplateTypeMap(array_merge(
+				$this->templateTypeMap->getTypes(),
+				$map->getTypes(),
+			)),
+			$this->typeAliasesMap,
+			$this->bypassTypeAliases,
+			$this->constUses,
+		);
+	}
+
+	public function withClassName(string $className): self
+	{
+		return new self(
+			$this->namespace,
+			$this->uses,
+			$className,
+			$this->functionName,
+			$this->templateTypeMap,
+			$this->typeAliasesMap,
+			$this->bypassTypeAliases,
+			$this->constUses,
+		);
+	}
+
+	public function unsetTemplateType(string $name): self
+	{
+		$map = $this->templateTypeMap;
+		if (!$map->hasType($name)) {
+			return $this;
+		}
+
+		return new self(
+			$this->namespace,
+			$this->uses,
+			$this->className,
+			$this->functionName,
+			$this->templateTypeMap->unsetType($name),
+			$this->typeAliasesMap,
+			$this->bypassTypeAliases,
+			$this->constUses,
+		);
+	}
+
+	public function bypassTypeAliases(): self
+	{
+		return new self($this->namespace, $this->uses, $this->className, $this->functionName, $this->templateTypeMap, $this->typeAliasesMap, true, $this->constUses);
+	}
+
+	public function shouldBypassTypeAliases(): bool
+	{
+		return $this->bypassTypeAliases;
+	}
+
+	public function hasTypeAlias(string $alias): bool
+	{
+		return array_key_exists($alias, $this->typeAliasesMap);
+	}
+
+}
diff --git a/src/Analyser/NodeScopeResolver.php b/src/Analyser/NodeScopeResolver.php
new file mode 100644
index 00000000..5936ee6a
--- /dev/null
+++ b/src/Analyser/NodeScopeResolver.php
@@ -0,0 +1,6595 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use ArrayAccess;
+use Closure;
+use DivisionByZeroError;
+use PhpParser\Comment\Doc;
+use PhpParser\Modifiers;
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PhpParser\Node\AttributeGroup;
+use PhpParser\Node\ComplexType;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PhpParser\Node\Expr\Assign;
+use PhpParser\Node\Expr\AssignRef;
+use PhpParser\Node\Expr\BinaryOp;
+use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
+use PhpParser\Node\Expr\BinaryOp\BooleanOr;
+use PhpParser\Node\Expr\BinaryOp\Coalesce;
+use PhpParser\Node\Expr\BooleanNot;
+use PhpParser\Node\Expr\CallLike;
+use PhpParser\Node\Expr\Cast;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\ErrorSuppress;
+use PhpParser\Node\Expr\Exit_;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Instanceof_;
+use PhpParser\Node\Expr\List_;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PhpParser\Node\Expr\Ternary;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Break_;
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\Continue_;
+use PhpParser\Node\Stmt\Do_;
+use PhpParser\Node\Stmt\Echo_;
+use PhpParser\Node\Stmt\For_;
+use PhpParser\Node\Stmt\Foreach_;
+use PhpParser\Node\Stmt\If_;
+use PhpParser\Node\Stmt\InlineHTML;
+use PhpParser\Node\Stmt\Return_;
+use PhpParser\Node\Stmt\Static_;
+use PhpParser\Node\Stmt\Switch_;
+use PhpParser\Node\Stmt\TryCatch;
+use PhpParser\Node\Stmt\Unset_;
+use PhpParser\Node\Stmt\While_;
+use PhpParser\NodeFinder;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\CloningVisitor;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\ReflectionEnum;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\DependencyInjection\Reflection\ClassReflectionExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\DynamicThrowTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterClosureTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterOutTypeExtensionProvider;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileReader;
+use PHPStan\Node\BooleanAndNode;
+use PHPStan\Node\BooleanOrNode;
+use PHPStan\Node\BreaklessWhileLoopNode;
+use PHPStan\Node\CatchWithUnthrownExceptionNode;
+use PHPStan\Node\ClassConstantsNode;
+use PHPStan\Node\ClassMethodsNode;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Node\ClassStatementsGatherer;
+use PHPStan\Node\ClosureReturnStatementsNode;
+use PHPStan\Node\DoWhileLoopConditionNode;
+use PHPStan\Node\ExecutionEndNode;
+use PHPStan\Node\Expr\AlwaysRememberedExpr;
+use PHPStan\Node\Expr\ExistingArrayDimFetch;
+use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
+use PHPStan\Node\Expr\GetIterableValueTypeExpr;
+use PHPStan\Node\Expr\GetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\OriginalPropertyTypeExpr;
+use PHPStan\Node\Expr\PropertyInitializationExpr;
+use PHPStan\Node\Expr\SetExistingOffsetValueTypeExpr;
+use PHPStan\Node\Expr\SetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Node\Expr\UnsetOffsetExpr;
+use PHPStan\Node\FinallyExitPointsNode;
+use PHPStan\Node\FunctionCallableNode;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Node\InArrowFunctionNode;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Node\InClassNode;
+use PHPStan\Node\InClosureNode;
+use PHPStan\Node\InForeachNode;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Node\InstantiationCallableNode;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Node\LiteralArrayItem;
+use PHPStan\Node\LiteralArrayNode;
+use PHPStan\Node\MatchExpressionArm;
+use PHPStan\Node\MatchExpressionArmBody;
+use PHPStan\Node\MatchExpressionArmCondition;
+use PHPStan\Node\MatchExpressionNode;
+use PHPStan\Node\MethodCallableNode;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Node\NoopExpressionNode;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Node\PropertyHookReturnStatementsNode;
+use PHPStan\Node\PropertyHookStatementNode;
+use PHPStan\Node\ReturnStatement;
+use PHPStan\Node\StaticMethodCallableNode;
+use PHPStan\Node\UnreachableStatementNode;
+use PHPStan\Node\VariableAssignNode;
+use PHPStan\Node\VarTagChangedExpressionTypeNode;
+use PHPStan\Parser\ArrowFunctionArgVisitor;
+use PHPStan\Parser\ClosureArgVisitor;
+use PHPStan\Parser\ImmediatelyInvokedClosureVisitor;
+use PHPStan\Parser\LineAttributesVisitor;
+use PHPStan\Parser\Parser;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\PhpDoc\Tag\VarTag;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\Native\NativeMethodReflection;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use ReflectionProperty;
+use Throwable;
+use Traversable;
+use TypeError;
+use UnhandledMatchError;
+use function array_fill_keys;
+use function array_filter;
+use function array_key_exists;
+use function array_key_last;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function array_pop;
+use function array_reverse;
+use function array_slice;
+use function array_values;
+use function base64_decode;
+use function count;
+use function in_array;
+use function is_array;
+use function is_int;
+use function is_string;
+use function ksort;
+use function sprintf;
+use function str_starts_with;
+use function strtolower;
+use function trim;
+use const PHP_VERSION_ID;
+use const SORT_NUMERIC;
+
+final class NodeScopeResolver
+{
+
+	private const LOOP_SCOPE_ITERATIONS = 3;
+	private const GENERALIZE_AFTER_ITERATION = 1;
+
+	/** @var bool[] filePath(string) => bool(true) */
+	private array $analysedFiles = [];
+
+	/** @var array<string, true> */
+	private array $earlyTerminatingMethodNames;
+
+	/** @var array<string, true> */
+	private array $calledMethodStack = [];
+
+	/** @var array<string, MutatingScope|null> */
+	private array $calledMethodResults = [];
+
+	/**
+	 * @param string[][] $earlyTerminatingMethodCalls className(string) => methods(string[])
+	 * @param array<int, string> $earlyTerminatingFunctionCalls
+	 * @param string[] $universalObjectCratesClasses
+	 */
+	public function __construct(
+		private readonly ReflectionProvider $reflectionProvider,
+		private readonly InitializerExprTypeResolver $initializerExprTypeResolver,
+		private readonly Reflector $reflector,
+		private readonly ClassReflectionExtensionRegistryProvider $classReflectionExtensionRegistryProvider,
+		private readonly ParameterOutTypeExtensionProvider $parameterOutTypeExtensionProvider,
+		private readonly Parser $parser,
+		private readonly FileTypeMapper $fileTypeMapper,
+		private readonly StubPhpDocProvider $stubPhpDocProvider,
+		private readonly PhpVersion $phpVersion,
+		private readonly SignatureMapProvider $signatureMapProvider,
+		private readonly AttributeReflectionFactory $attributeReflectionFactory,
+		private readonly PhpDocInheritanceResolver $phpDocInheritanceResolver,
+		private readonly FileHelper $fileHelper,
+		private readonly TypeSpecifier $typeSpecifier,
+		private readonly DynamicThrowTypeExtensionProvider $dynamicThrowTypeExtensionProvider,
+		private readonly ReadWritePropertiesExtensionProvider $readWritePropertiesExtensionProvider,
+		private readonly ParameterClosureTypeExtensionProvider $parameterClosureTypeExtensionProvider,
+		private readonly ScopeFactory $scopeFactory,
+		private readonly bool $polluteScopeWithLoopInitialAssignments,
+		private readonly bool $polluteScopeWithAlwaysIterableForeach,
+		private readonly bool $polluteScopeWithBlock,
+		private readonly array $earlyTerminatingMethodCalls,
+		private readonly array $earlyTerminatingFunctionCalls,
+		private readonly array $universalObjectCratesClasses,
+		private readonly bool $implicitThrows,
+		private readonly bool $treatPhpDocTypesAsCertain,
+	)
+	{
+		$earlyTerminatingMethodNames = [];
+		foreach ($this->earlyTerminatingMethodCalls as $methodNames) {
+			foreach ($methodNames as $methodName) {
+				$earlyTerminatingMethodNames[strtolower($methodName)] = true;
+			}
+		}
+		$this->earlyTerminatingMethodNames = $earlyTerminatingMethodNames;
+	}
+
+	/**
+	 * @api
+	 * @param string[] $files
+	 */
+	public function setAnalysedFiles(array $files): void
+	{
+		$this->analysedFiles = array_fill_keys($files, true);
+	}
+
+	/**
+	 * @api
+	 * @param Node[] $nodes
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	public function processNodes(
+		array $nodes,
+		MutatingScope $scope,
+		callable $nodeCallback,
+	): void
+	{
+		$alreadyTerminated = false;
+		foreach ($nodes as $i => $node) {
+			if (
+				!$node instanceof Node\Stmt
+				|| ($alreadyTerminated && !($node instanceof Node\Stmt\Function_ || $node instanceof Node\Stmt\ClassLike))
+			) {
+				continue;
+			}
+
+			$statementResult = $this->processStmtNode($node, $scope, $nodeCallback, StatementContext::createTopLevel());
+			$scope = $statementResult->getScope();
+			if ($alreadyTerminated || !$statementResult->isAlwaysTerminating()) {
+				continue;
+			}
+
+			$alreadyTerminated = true;
+			$nextStmts = $this->getNextUnreachableStatements(array_slice($nodes, $i + 1), true);
+			$this->processUnreachableStatement($nextStmts, $scope, $nodeCallback);
+		}
+	}
+
+	/**
+	 * @param Node\Stmt[] $nextStmts
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processUnreachableStatement(array $nextStmts, MutatingScope $scope, callable $nodeCallback): void
+	{
+		if ($nextStmts === []) {
+			return;
+		}
+
+		$unreachableStatement = null;
+		$nextStatements = [];
+
+		foreach ($nextStmts as $key => $nextStmt) {
+			if ($key === 0) {
+				$unreachableStatement = $nextStmt;
+				continue;
+			}
+
+			$nextStatements[] = $nextStmt;
+		}
+
+		if (!$unreachableStatement instanceof Node\Stmt) {
+			return;
+		}
+
+		$nodeCallback(new UnreachableStatementNode($unreachableStatement, $nextStatements), $scope);
+	}
+
+	/**
+	 * @api
+	 * @param Node\Stmt[] $stmts
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	public function processStmtNodes(
+		Node $parentNode,
+		array $stmts,
+		MutatingScope $scope,
+		callable $nodeCallback,
+		StatementContext $context,
+	): StatementResult
+	{
+		$exitPoints = [];
+		$throwPoints = [];
+		$impurePoints = [];
+		$alreadyTerminated = false;
+		$hasYield = false;
+		$stmtCount = count($stmts);
+		$shouldCheckLastStatement = $parentNode instanceof Node\Stmt\Function_
+			|| $parentNode instanceof Node\Stmt\ClassMethod
+			|| $parentNode instanceof PropertyHookStatementNode
+			|| $parentNode instanceof Expr\Closure;
+		foreach ($stmts as $i => $stmt) {
+			if ($alreadyTerminated && !($stmt instanceof Node\Stmt\Function_ || $stmt instanceof Node\Stmt\ClassLike)) {
+				continue;
+			}
+
+			$isLast = $i === $stmtCount - 1;
+			$statementResult = $this->processStmtNode(
+				$stmt,
+				$scope,
+				$nodeCallback,
+				$context,
+			);
+			$scope = $statementResult->getScope();
+			$hasYield = $hasYield || $statementResult->hasYield();
+
+			if ($shouldCheckLastStatement && $isLast) {
+				/** @var Node\Stmt\Function_|Node\Stmt\ClassMethod|PropertyHookStatementNode|Expr\Closure $parentNode */
+				$parentNode = $parentNode;
+
+				$endStatements = $statementResult->getEndStatements();
+				if (count($endStatements) > 0) {
+					foreach ($endStatements as $endStatement) {
+						$endStatementResult = $endStatement->getResult();
+						$nodeCallback(new ExecutionEndNode(
+							$endStatement->getStatement(),
+							new StatementResult(
+								$endStatementResult->getScope(),
+								$hasYield,
+								$endStatementResult->isAlwaysTerminating(),
+								$endStatementResult->getExitPoints(),
+								$endStatementResult->getThrowPoints(),
+								$endStatementResult->getImpurePoints(),
+							),
+							$parentNode->getReturnType() !== null,
+						), $endStatementResult->getScope());
+					}
+				} else {
+					$nodeCallback(new ExecutionEndNode(
+						$stmt,
+						new StatementResult(
+							$scope,
+							$hasYield,
+							$statementResult->isAlwaysTerminating(),
+							$statementResult->getExitPoints(),
+							$statementResult->getThrowPoints(),
+							$statementResult->getImpurePoints(),
+						),
+						$parentNode->getReturnType() !== null,
+					), $scope);
+				}
+			}
+
+			$exitPoints = array_merge($exitPoints, $statementResult->getExitPoints());
+			$throwPoints = array_merge($throwPoints, $statementResult->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $statementResult->getImpurePoints());
+
+			if ($alreadyTerminated || !$statementResult->isAlwaysTerminating()) {
+				continue;
+			}
+
+			$alreadyTerminated = true;
+			$nextStmts = $this->getNextUnreachableStatements(array_slice($stmts, $i + 1), $parentNode instanceof Node\Stmt\Namespace_);
+			$this->processUnreachableStatement($nextStmts, $scope, $nodeCallback);
+		}
+
+		$statementResult = new StatementResult($scope, $hasYield, $alreadyTerminated, $exitPoints, $throwPoints, $impurePoints);
+		if ($stmtCount === 0 && $shouldCheckLastStatement) {
+			/** @var Node\Stmt\Function_|Node\Stmt\ClassMethod|PropertyHookStatementNode|Expr\Closure $parentNode */
+			$parentNode = $parentNode;
+			$returnTypeNode = $parentNode->getReturnType();
+			if ($parentNode instanceof Expr\Closure) {
+				$parentNode = new Node\Stmt\Expression($parentNode, $parentNode->getAttributes());
+			}
+			$nodeCallback(new ExecutionEndNode(
+				$parentNode,
+				$statementResult,
+				$returnTypeNode !== null,
+			), $scope);
+		}
+
+		return $statementResult;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processStmtNode(
+		Node\Stmt $stmt,
+		MutatingScope $scope,
+		callable $nodeCallback,
+		StatementContext $context,
+	): StatementResult
+	{
+		if (
+			!$stmt instanceof Static_
+			&& !$stmt instanceof Foreach_
+			&& !$stmt instanceof Node\Stmt\Global_
+			&& !$stmt instanceof Node\Stmt\Property
+			&& !$stmt instanceof Node\Stmt\ClassConst
+			&& !$stmt instanceof Node\Stmt\Const_
+		) {
+			$scope = $this->processStmtVarAnnotation($scope, $stmt, null, $nodeCallback);
+		}
+
+		if ($stmt instanceof Node\Stmt\ClassMethod) {
+			if (!$scope->isInClass()) {
+				throw new ShouldNotHappenException();
+			}
+			if (
+				$scope->isInTrait()
+				&& $scope->getClassReflection()->hasNativeMethod($stmt->name->toString())
+			) {
+				$methodReflection = $scope->getClassReflection()->getNativeMethod($stmt->name->toString());
+				if ($methodReflection instanceof NativeMethodReflection) {
+					return new StatementResult($scope, false, false, [], [], []);
+				}
+				if ($methodReflection instanceof PhpMethodReflection) {
+					$declaringTrait = $methodReflection->getDeclaringTrait();
+					if ($declaringTrait === null || $declaringTrait->getName() !== $scope->getTraitReflection()->getName()) {
+						return new StatementResult($scope, false, false, [], [], []);
+					}
+				}
+			}
+		}
+
+		$stmtScope = $scope;
+		if ($stmt instanceof Node\Stmt\Expression && $stmt->expr instanceof Expr\Throw_) {
+			$stmtScope = $this->processStmtVarAnnotation($scope, $stmt, $stmt->expr->expr, $nodeCallback);
+		}
+		if ($stmt instanceof Return_) {
+			$stmtScope = $this->processStmtVarAnnotation($scope, $stmt, $stmt->expr, $nodeCallback);
+		}
+
+		$nodeCallback($stmt, $stmtScope);
+
+		$overridingThrowPoints = $this->getOverridingThrowPoints($stmt, $scope);
+
+		if ($stmt instanceof Node\Stmt\Declare_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$alwaysTerminating = false;
+			$exitPoints = [];
+			foreach ($stmt->declares as $declare) {
+				$nodeCallback($declare, $scope);
+				$nodeCallback($declare->value, $scope);
+				if (
+					$declare->key->name !== 'strict_types'
+					|| !($declare->value instanceof Node\Scalar\Int_)
+					|| $declare->value->value !== 1
+				) {
+					continue;
+				}
+
+				$scope = $scope->enterDeclareStrictTypes();
+			}
+
+			if ($stmt->stmts !== null) {
+				$result = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
+				$scope = $result->getScope();
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+				$alwaysTerminating = $result->isAlwaysTerminating();
+				$exitPoints = $result->getExitPoints();
+			}
+
+			return new StatementResult($scope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints);
+		} elseif ($stmt instanceof Node\Stmt\Function_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
+			[$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, , $isPure, $acceptsNamedArguments, , $phpDocComment, $asserts,, $phpDocParameterOutTypes] = $this->getPhpDocs($scope, $stmt);
+
+			foreach ($stmt->params as $param) {
+				$this->processParamNode($stmt, $param, $scope, $nodeCallback);
+			}
+
+			if ($stmt->returnType !== null) {
+				$nodeCallback($stmt->returnType, $scope);
+			}
+
+			if (!$isDeprecated) {
+				[$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $stmt);
+			}
+
+			$functionScope = $scope->enterFunction(
+				$stmt,
+				$templateTypeMap,
+				$phpDocParameterTypes,
+				$phpDocReturnType,
+				$phpDocThrowType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$isInternal,
+				$isPure,
+				$acceptsNamedArguments,
+				$asserts,
+				$phpDocComment,
+				$phpDocParameterOutTypes,
+				$phpDocImmediatelyInvokedCallableParameters,
+				$phpDocClosureThisTypeParameters,
+			);
+			$functionReflection = $functionScope->getFunction();
+			if (!$functionReflection instanceof PhpFunctionFromParserNodeReflection) {
+				throw new ShouldNotHappenException();
+			}
+
+			$nodeCallback(new InFunctionNode($functionReflection, $stmt), $functionScope);
+
+			$gatheredReturnStatements = [];
+			$gatheredYieldStatements = [];
+			$executionEnds = [];
+			$functionImpurePoints = [];
+			$statementResult = $this->processStmtNodes($stmt, $stmt->stmts, $functionScope, static function (Node $node, Scope $scope) use ($nodeCallback, $functionScope, &$gatheredReturnStatements, &$gatheredYieldStatements, &$executionEnds, &$functionImpurePoints): void {
+				$nodeCallback($node, $scope);
+				if ($scope->getFunction() !== $functionScope->getFunction()) {
+					return;
+				}
+				if ($scope->isInAnonymousFunction()) {
+					return;
+				}
+				if ($node instanceof PropertyAssignNode) {
+					$functionImpurePoints[] = new ImpurePoint(
+						$scope,
+						$node,
+						'propertyAssign',
+						'property assignment',
+						true,
+					);
+					return;
+				}
+				if ($node instanceof ExecutionEndNode) {
+					$executionEnds[] = $node;
+					return;
+				}
+				if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
+					$gatheredYieldStatements[] = $node;
+				}
+				if (!$node instanceof Return_) {
+					return;
+				}
+
+				$gatheredReturnStatements[] = new ReturnStatement($scope, $node);
+			}, StatementContext::createTopLevel());
+
+			$nodeCallback(new FunctionReturnStatementsNode(
+				$stmt,
+				$gatheredReturnStatements,
+				$gatheredYieldStatements,
+				$statementResult,
+				$executionEnds,
+				array_merge($statementResult->getImpurePoints(), $functionImpurePoints),
+				$functionReflection,
+			), $functionScope);
+		} elseif ($stmt instanceof Node\Stmt\ClassMethod) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
+			[$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, $isFinal, $isPure, $acceptsNamedArguments, , $phpDocComment, $asserts, $selfOutType, $phpDocParameterOutTypes] = $this->getPhpDocs($scope, $stmt);
+
+			foreach ($stmt->params as $param) {
+				$this->processParamNode($stmt, $param, $scope, $nodeCallback);
+			}
+
+			if ($stmt->returnType !== null) {
+				$nodeCallback($stmt->returnType, $scope);
+			}
+
+			if (!$isDeprecated) {
+				[$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $stmt);
+			}
+
+			$isFromTrait = $stmt->getAttribute('originalTraitMethodName') === '__construct';
+			$isConstructor = $isFromTrait || $stmt->name->toLowerString() === '__construct';
+
+			$methodScope = $scope->enterClassMethod(
+				$stmt,
+				$templateTypeMap,
+				$phpDocParameterTypes,
+				$phpDocReturnType,
+				$phpDocThrowType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$isInternal,
+				$isFinal,
+				$isPure,
+				$acceptsNamedArguments,
+				$asserts,
+				$selfOutType,
+				$phpDocComment,
+				$phpDocParameterOutTypes,
+				$phpDocImmediatelyInvokedCallableParameters,
+				$phpDocClosureThisTypeParameters,
+				$isConstructor,
+			);
+
+			if (!$scope->isInClass()) {
+				throw new ShouldNotHappenException();
+			}
+
+			$classReflection = $scope->getClassReflection();
+
+			if ($isConstructor) {
+				foreach ($stmt->params as $param) {
+					if ($param->flags === 0 && $param->hooks === []) {
+						continue;
+					}
+
+					if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+						throw new ShouldNotHappenException();
+					}
+					$phpDoc = null;
+					if ($param->getDocComment() !== null) {
+						$phpDoc = $param->getDocComment()->getText();
+					}
+					$nodeCallback(new ClassPropertyNode(
+						$param->var->name,
+						$param->flags,
+						$param->type !== null ? ParserNodeTypeToPHPStanType::resolve($param->type, $classReflection) : null,
+						null,
+						$phpDoc,
+						$phpDocParameterTypes[$param->var->name] ?? null,
+						true,
+						$isFromTrait,
+						$param,
+						false,
+						$scope->isInTrait(),
+						$classReflection->isReadOnly(),
+						false,
+						$classReflection,
+					), $methodScope);
+					$this->processPropertyHooks(
+						$stmt,
+						$param->type,
+						$phpDocParameterTypes[$param->var->name] ?? null,
+						$param->var->name,
+						$param->hooks,
+						$scope,
+						$nodeCallback,
+					);
+					$methodScope = $methodScope->assignExpression(new PropertyInitializationExpr($param->var->name), new MixedType(), new MixedType());
+				}
+			}
+
+			if ($stmt->getAttribute('virtual', false) === false) {
+				$methodReflection = $methodScope->getFunction();
+				if (!$methodReflection instanceof PhpMethodFromParserNodeReflection) {
+					throw new ShouldNotHappenException();
+				}
+				$nodeCallback(new InClassMethodNode($classReflection, $methodReflection, $stmt), $methodScope);
+			}
+
+			if ($stmt->stmts !== null) {
+				$gatheredReturnStatements = [];
+				$gatheredYieldStatements = [];
+				$executionEnds = [];
+				$methodImpurePoints = [];
+				$statementResult = $this->processStmtNodes($stmt, $stmt->stmts, $methodScope, static function (Node $node, Scope $scope) use ($nodeCallback, $methodScope, &$gatheredReturnStatements, &$gatheredYieldStatements, &$executionEnds, &$methodImpurePoints): void {
+					$nodeCallback($node, $scope);
+					if ($scope->getFunction() !== $methodScope->getFunction()) {
+						return;
+					}
+					if ($scope->isInAnonymousFunction()) {
+						return;
+					}
+					if ($node instanceof PropertyAssignNode) {
+						if (
+							$node->getPropertyFetch() instanceof Expr\PropertyFetch
+							&& $scope->getFunction() instanceof PhpMethodFromParserNodeReflection
+							&& $scope->getFunction()->getDeclaringClass()->hasConstructor()
+							&& $scope->getFunction()->getDeclaringClass()->getConstructor()->getName() === $scope->getFunction()->getName()
+							&& TypeUtils::findThisType($scope->getType($node->getPropertyFetch()->var)) !== null
+						) {
+							return;
+						}
+						$methodImpurePoints[] = new ImpurePoint(
+							$scope,
+							$node,
+							'propertyAssign',
+							'property assignment',
+							true,
+						);
+						return;
+					}
+					if ($node instanceof ExecutionEndNode) {
+						$executionEnds[] = $node;
+						return;
+					}
+					if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
+						$gatheredYieldStatements[] = $node;
+					}
+					if (!$node instanceof Return_) {
+						return;
+					}
+
+					$gatheredReturnStatements[] = new ReturnStatement($scope, $node);
+				}, StatementContext::createTopLevel());
+
+				$methodReflection = $methodScope->getFunction();
+				if (!$methodReflection instanceof PhpMethodFromParserNodeReflection) {
+					throw new ShouldNotHappenException();
+				}
+
+				$nodeCallback(new MethodReturnStatementsNode(
+					$stmt,
+					$gatheredReturnStatements,
+					$gatheredYieldStatements,
+					$statementResult,
+					$executionEnds,
+					array_merge($statementResult->getImpurePoints(), $methodImpurePoints),
+					$classReflection,
+					$methodReflection,
+				), $methodScope);
+			}
+		} elseif ($stmt instanceof Echo_) {
+			$hasYield = false;
+			$throwPoints = [];
+			foreach ($stmt->exprs as $echoExpr) {
+				$result = $this->processExprNode($stmt, $echoExpr, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$scope = $result->getScope();
+				$hasYield = $hasYield || $result->hasYield();
+			}
+
+			$throwPoints = $overridingThrowPoints ?? $throwPoints;
+			$impurePoints = [
+				new ImpurePoint($scope, $stmt, 'echo', 'echo', true),
+			];
+		} elseif ($stmt instanceof Return_) {
+			if ($stmt->expr !== null) {
+				$result = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+				$scope = $result->getScope();
+				$hasYield = $result->hasYield();
+			} else {
+				$hasYield = false;
+				$throwPoints = [];
+				$impurePoints = [];
+			}
+
+			return new StatementResult($scope, $hasYield, true, [
+				new StatementExitPoint($stmt, $scope),
+			], $overridingThrowPoints ?? $throwPoints, $impurePoints);
+		} elseif ($stmt instanceof Continue_ || $stmt instanceof Break_) {
+			if ($stmt->num !== null) {
+				$result = $this->processExprNode($stmt, $stmt->num, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $result->getScope();
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+			} else {
+				$hasYield = false;
+				$throwPoints = [];
+				$impurePoints = [];
+			}
+
+			return new StatementResult($scope, $hasYield, true, [
+				new StatementExitPoint($stmt, $scope),
+			], $overridingThrowPoints ?? $throwPoints, $impurePoints);
+		} elseif ($stmt instanceof Node\Stmt\Expression) {
+			if ($stmt->expr instanceof Expr\Throw_) {
+				$scope = $stmtScope;
+			}
+			$earlyTerminationExpr = $this->findEarlyTerminatingExpr($stmt->expr, $scope);
+			$hasAssign = false;
+			$currentScope = $scope;
+			$result = $this->processExprNode($stmt, $stmt->expr, $scope, static function (Node $node, Scope $scope) use ($nodeCallback, $currentScope, &$hasAssign): void {
+				$nodeCallback($node, $scope);
+				if ($scope->getAnonymousFunctionReflection() !== $currentScope->getAnonymousFunctionReflection()) {
+					return;
+				}
+				if ($scope->getFunction() !== $currentScope->getFunction()) {
+					return;
+				}
+				if (!$node instanceof VariableAssignNode && !$node instanceof PropertyAssignNode) {
+					return;
+				}
+
+				$hasAssign = true;
+			}, ExpressionContext::createTopLevel());
+			$throwPoints = array_filter($result->getThrowPoints(), static fn ($throwPoint) => $throwPoint->isExplicit());
+			if (
+				count($result->getImpurePoints()) === 0
+				&& count($throwPoints) === 0
+				&& !$stmt->expr instanceof Expr\PostInc
+				&& !$stmt->expr instanceof Expr\PreInc
+				&& !$stmt->expr instanceof Expr\PostDec
+				&& !$stmt->expr instanceof Expr\PreDec
+			) {
+				$nodeCallback(new NoopExpressionNode($stmt->expr, $hasAssign), $scope);
+			}
+			$scope = $result->getScope();
+			$scope = $scope->filterBySpecifiedTypes($this->typeSpecifier->specifyTypesInCondition(
+				$scope,
+				$stmt->expr,
+				TypeSpecifierContext::createNull(),
+			));
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			if ($earlyTerminationExpr !== null) {
+				return new StatementResult($scope, $hasYield, true, [
+					new StatementExitPoint($stmt, $scope),
+				], $overridingThrowPoints ?? $throwPoints, $impurePoints);
+			}
+			return new StatementResult($scope, $hasYield, false, [], $overridingThrowPoints ?? $throwPoints, $impurePoints);
+		} elseif ($stmt instanceof Node\Stmt\Namespace_) {
+			if ($stmt->name !== null) {
+				$scope = $scope->enterNamespace($stmt->name->toString());
+			}
+
+			$scope = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context)->getScope();
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+		} elseif ($stmt instanceof Node\Stmt\Trait_) {
+			return new StatementResult($scope, false, false, [], [], []);
+		} elseif ($stmt instanceof Node\Stmt\ClassLike) {
+			if (!$context->isTopLevel()) {
+				return new StatementResult($scope, false, false, [], [], []);
+			}
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			if (isset($stmt->namespacedName)) {
+				$classReflection = $this->getCurrentClassReflection($stmt, $stmt->namespacedName->toString(), $scope);
+				$classScope = $scope->enterClass($classReflection);
+				$nodeCallback(new InClassNode($stmt, $classReflection), $classScope);
+			} elseif ($stmt instanceof Class_) {
+				if ($stmt->name === null) {
+					throw new ShouldNotHappenException();
+				}
+				if (!$stmt->isAnonymous()) {
+					$classReflection = $this->reflectionProvider->getClass($stmt->name->toString());
+				} else {
+					$classReflection = $this->reflectionProvider->getAnonymousClassReflection($stmt, $scope);
+				}
+				$classScope = $scope->enterClass($classReflection);
+				$nodeCallback(new InClassNode($stmt, $classReflection), $classScope);
+			} else {
+				throw new ShouldNotHappenException();
+			}
+
+			$classStatementsGatherer = new ClassStatementsGatherer($classReflection, $nodeCallback);
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $classScope, $classStatementsGatherer);
+
+			$this->processStmtNodes($stmt, $stmt->stmts, $classScope, $classStatementsGatherer, $context);
+			$nodeCallback(new ClassPropertiesNode($stmt, $this->readWritePropertiesExtensionProvider, $classStatementsGatherer->getProperties(), $classStatementsGatherer->getPropertyUsages(), $classStatementsGatherer->getMethodCalls(), $classStatementsGatherer->getReturnStatementsNodes(), $classStatementsGatherer->getPropertyAssigns(), $classReflection), $classScope);
+			$nodeCallback(new ClassMethodsNode($stmt, $classStatementsGatherer->getMethods(), $classStatementsGatherer->getMethodCalls(), $classReflection), $classScope);
+			$nodeCallback(new ClassConstantsNode($stmt, $classStatementsGatherer->getConstants(), $classStatementsGatherer->getConstantFetches(), $classReflection), $classScope);
+			$classReflection->evictPrivateSymbols();
+			$this->calledMethodResults = [];
+		} elseif ($stmt instanceof Node\Stmt\Property) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
+
+			$nativePropertyType = $stmt->type !== null ? ParserNodeTypeToPHPStanType::resolve($stmt->type, $scope->getClassReflection()) : null;
+
+			[,,,,,,,,,,,,$isReadOnly, $docComment, ,,,$varTags, $isAllowedPrivateMutation] = $this->getPhpDocs($scope, $stmt);
+			$phpDocType = null;
+			if (isset($varTags[0]) && count($varTags) === 1) {
+				$phpDocType = $varTags[0]->getType();
+			}
+
+			foreach ($stmt->props as $prop) {
+				$nodeCallback($prop, $scope);
+				if ($prop->default !== null) {
+					$this->processExprNode($stmt, $prop->default, $scope, $nodeCallback, ExpressionContext::createDeep());
+				}
+
+				if (!$scope->isInClass()) {
+					throw new ShouldNotHappenException();
+				}
+				$propertyName = $prop->name->toString();
+
+				if ($phpDocType === null) {
+					if (isset($varTags[$propertyName])) {
+						$phpDocType = $varTags[$propertyName]->getType();
+					}
+				}
+
+				$propStmt = clone $stmt;
+				$propStmt->setAttributes($prop->getAttributes());
+				$nodeCallback(
+					new ClassPropertyNode(
+						$propertyName,
+						$stmt->flags,
+						$nativePropertyType,
+						$prop->default,
+						$docComment,
+						$phpDocType,
+						false,
+						false,
+						$propStmt,
+						$isReadOnly,
+						$scope->isInTrait(),
+						$scope->getClassReflection()->isReadOnly(),
+						$isAllowedPrivateMutation,
+						$scope->getClassReflection(),
+					),
+					$scope,
+				);
+			}
+
+			if (count($stmt->hooks) > 0) {
+				if (!isset($propertyName)) {
+					throw new ShouldNotHappenException('Property name should be known when analysing hooks.');
+				}
+				$this->processPropertyHooks(
+					$stmt,
+					$stmt->type,
+					$phpDocType,
+					$propertyName,
+					$stmt->hooks,
+					$scope,
+					$nodeCallback,
+				);
+			}
+
+			if ($stmt->type !== null) {
+				$nodeCallback($stmt->type, $scope);
+			}
+		} elseif ($stmt instanceof If_) {
+			$conditionType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($stmt->cond) : $scope->getNativeType($stmt->cond))->toBoolean();
+			$ifAlwaysTrue = $conditionType->isTrue()->yes();
+			$condResult = $this->processExprNode($stmt, $stmt->cond, $scope, $nodeCallback, ExpressionContext::createDeep());
+			$exitPoints = [];
+			$throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
+			$impurePoints = $condResult->getImpurePoints();
+			$endStatements = [];
+			$finalScope = null;
+			$alwaysTerminating = true;
+			$hasYield = $condResult->hasYield();
+
+			$branchScopeStatementResult = $this->processStmtNodes($stmt, $stmt->stmts, $condResult->getTruthyScope(), $nodeCallback, $context);
+
+			if (!$conditionType instanceof ConstantBooleanType || $conditionType->getValue()) {
+				$exitPoints = $branchScopeStatementResult->getExitPoints();
+				$throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
+				$branchScope = $branchScopeStatementResult->getScope();
+				$finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? null : $branchScope;
+				$alwaysTerminating = $branchScopeStatementResult->isAlwaysTerminating();
+				if (count($branchScopeStatementResult->getEndStatements()) > 0) {
+					$endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
+				} elseif (count($stmt->stmts) > 0) {
+					$endStatements[] = new EndStatementResult($stmt->stmts[count($stmt->stmts) - 1], $branchScopeStatementResult);
+				} else {
+					$endStatements[] = new EndStatementResult($stmt, $branchScopeStatementResult);
+				}
+				$hasYield = $branchScopeStatementResult->hasYield() || $hasYield;
+			}
+
+			$scope = $condResult->getFalseyScope();
+			$lastElseIfConditionIsTrue = false;
+
+			$condScope = $scope;
+			foreach ($stmt->elseifs as $elseif) {
+				$nodeCallback($elseif, $scope);
+				$elseIfConditionType = ($this->treatPhpDocTypesAsCertain ? $condScope->getType($elseif->cond) : $scope->getNativeType($elseif->cond))->toBoolean();
+				$condResult = $this->processExprNode($stmt, $elseif->cond, $condScope, $nodeCallback, ExpressionContext::createDeep());
+				$throwPoints = array_merge($throwPoints, $condResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $condResult->getImpurePoints());
+				$condScope = $condResult->getScope();
+				$branchScopeStatementResult = $this->processStmtNodes($elseif, $elseif->stmts, $condResult->getTruthyScope(), $nodeCallback, $context);
+
+				if (
+					!$ifAlwaysTrue
+					&& (
+						!$lastElseIfConditionIsTrue
+						&& (
+							!$elseIfConditionType instanceof ConstantBooleanType
+							|| $elseIfConditionType->getValue()
+						)
+					)
+				) {
+					$exitPoints = array_merge($exitPoints, $branchScopeStatementResult->getExitPoints());
+					$throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
+					$branchScope = $branchScopeStatementResult->getScope();
+					$finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? $finalScope : $branchScope->mergeWith($finalScope);
+					$alwaysTerminating = $alwaysTerminating && $branchScopeStatementResult->isAlwaysTerminating();
+					if (count($branchScopeStatementResult->getEndStatements()) > 0) {
+						$endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
+					} elseif (count($elseif->stmts) > 0) {
+						$endStatements[] = new EndStatementResult($elseif->stmts[count($elseif->stmts) - 1], $branchScopeStatementResult);
+					} else {
+						$endStatements[] = new EndStatementResult($elseif, $branchScopeStatementResult);
+					}
+					$hasYield = $hasYield || $branchScopeStatementResult->hasYield();
+				}
+
+				if (
+					$elseIfConditionType->isTrue()->yes()
+				) {
+					$lastElseIfConditionIsTrue = true;
+				}
+
+				$condScope = $condScope->filterByFalseyValue($elseif->cond);
+				$scope = $condScope;
+			}
+
+			if ($stmt->else === null) {
+				if (!$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
+					$finalScope = $scope->mergeWith($finalScope);
+					$alwaysTerminating = false;
+				}
+			} else {
+				$nodeCallback($stmt->else, $scope);
+				$branchScopeStatementResult = $this->processStmtNodes($stmt->else, $stmt->else->stmts, $scope, $nodeCallback, $context);
+
+				if (!$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
+					$exitPoints = array_merge($exitPoints, $branchScopeStatementResult->getExitPoints());
+					$throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
+					$branchScope = $branchScopeStatementResult->getScope();
+					$finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? $finalScope : $branchScope->mergeWith($finalScope);
+					$alwaysTerminating = $alwaysTerminating && $branchScopeStatementResult->isAlwaysTerminating();
+					if (count($branchScopeStatementResult->getEndStatements()) > 0) {
+						$endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
+					} elseif (count($stmt->else->stmts) > 0) {
+						$endStatements[] = new EndStatementResult($stmt->else->stmts[count($stmt->else->stmts) - 1], $branchScopeStatementResult);
+					} else {
+						$endStatements[] = new EndStatementResult($stmt->else, $branchScopeStatementResult);
+					}
+					$hasYield = $hasYield || $branchScopeStatementResult->hasYield();
+				}
+			}
+
+			if ($finalScope === null) {
+				$finalScope = $scope;
+			}
+
+			if ($stmt->else === null && !$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
+				$endStatements[] = new EndStatementResult($stmt, new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints));
+			}
+
+			return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints, $endStatements);
+		} elseif ($stmt instanceof Node\Stmt\TraitUse) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$this->processTraitUse($stmt, $scope, $nodeCallback);
+		} elseif ($stmt instanceof Foreach_) {
+			$condResult = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
+			$throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
+			$impurePoints = $condResult->getImpurePoints();
+			$scope = $condResult->getScope();
+			$arrayComparisonExpr = new BinaryOp\NotIdentical(
+				$stmt->expr,
+				new Array_([]),
+			);
+			if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
+				$scope = $this->processVarAnnotation($scope, [$stmt->expr->name], $stmt);
+			}
+			$nodeCallback(new InForeachNode($stmt), $scope);
+			$originalScope = $scope;
+			$bodyScope = $scope;
+
+			if ($context->isTopLevel()) {
+				$originalScope = $this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope;
+				$bodyScope = $this->enterForeach($originalScope, $originalScope, $stmt);
+				$count = 0;
+				do {
+					$prevScope = $bodyScope;
+					$bodyScope = $bodyScope->mergeWith($this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope);
+					$bodyScope = $this->enterForeach($bodyScope, $originalScope, $stmt);
+					$bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
+					}, $context->enterDeep())->filterOutLoopExitPoints();
+					$bodyScope = $bodyScopeResult->getScope();
+					foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+						$bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
+					}
+					if ($bodyScope->equals($prevScope)) {
+						break;
+					}
+
+					if ($count >= self::GENERALIZE_AFTER_ITERATION) {
+						$bodyScope = $prevScope->generalizeWith($bodyScope);
+					}
+					$count++;
+				} while ($count < self::LOOP_SCOPE_ITERATIONS);
+			}
+
+			$bodyScope = $bodyScope->mergeWith($this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope);
+			$bodyScope = $this->enterForeach($bodyScope, $originalScope, $stmt);
+			$finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
+			$finalScope = $finalScopeResult->getScope();
+			foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+				$finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
+			}
+			foreach ($finalScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
+				$finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
+			}
+
+			$exprType = $scope->getType($stmt->expr);
+			$isIterableAtLeastOnce = $exprType->isIterableAtLeastOnce();
+			if ($exprType->isIterable()->no() || $isIterableAtLeastOnce->maybe()) {
+				$finalScope = $finalScope->mergeWith($scope->filterByTruthyValue(new BooleanOr(
+					new BinaryOp\Identical(
+						$stmt->expr,
+						new Array_([]),
+					),
+					new FuncCall(new Name\FullyQualified('is_object'), [
+						new Arg($stmt->expr),
+					]),
+				)));
+			} elseif ($isIterableAtLeastOnce->no() || $finalScopeResult->isAlwaysTerminating()) {
+				$finalScope = $scope;
+			} elseif (!$this->polluteScopeWithAlwaysIterableForeach) {
+				$finalScope = $scope->processAlwaysIterableForeachScopeWithoutPollute($finalScope);
+				// get types from finalScope, but don't create new variables
+			}
+
+			if (!$isIterableAtLeastOnce->no()) {
+				$throwPoints = array_merge($throwPoints, $finalScopeResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $finalScopeResult->getImpurePoints());
+			}
+			if (!(new ObjectType(Traversable::class))->isSuperTypeOf($scope->getType($stmt->expr))->no()) {
+				$throwPoints[] = ThrowPoint::createImplicit($scope, $stmt->expr);
+			}
+
+			return new StatementResult(
+				$finalScope,
+				$finalScopeResult->hasYield() || $condResult->hasYield(),
+				$isIterableAtLeastOnce->yes() && $finalScopeResult->isAlwaysTerminating(),
+				$finalScopeResult->getExitPointsForOuterLoop(),
+				$throwPoints,
+				$impurePoints,
+			);
+		} elseif ($stmt instanceof While_) {
+			$condResult = $this->processExprNode($stmt, $stmt->cond, $scope, static function (): void {
+			}, ExpressionContext::createDeep());
+			$bodyScope = $condResult->getTruthyScope();
+
+			if ($context->isTopLevel()) {
+				$count = 0;
+				do {
+					$prevScope = $bodyScope;
+					$bodyScope = $bodyScope->mergeWith($scope);
+					$bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, static function (): void {
+					}, ExpressionContext::createDeep())->getTruthyScope();
+					$bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
+					}, $context->enterDeep())->filterOutLoopExitPoints();
+					$bodyScope = $bodyScopeResult->getScope();
+					foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+						$bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
+					}
+					if ($bodyScope->equals($prevScope)) {
+						break;
+					}
+
+					if ($count >= self::GENERALIZE_AFTER_ITERATION) {
+						$bodyScope = $prevScope->generalizeWith($bodyScope);
+					}
+					$count++;
+				} while ($count < self::LOOP_SCOPE_ITERATIONS);
+			}
+
+			$bodyScope = $bodyScope->mergeWith($scope);
+			$bodyScopeMaybeRan = $bodyScope;
+			$bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep())->getTruthyScope();
+			$finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
+			$finalScope = $finalScopeResult->getScope()->filterByFalseyValue($stmt->cond);
+
+			$condBooleanType = ($this->treatPhpDocTypesAsCertain ? $bodyScopeMaybeRan->getType($stmt->cond) : $bodyScopeMaybeRan->getNativeType($stmt->cond))->toBoolean();
+			$alwaysIterates = $condBooleanType->isTrue()->yes() && $context->isTopLevel();
+			$neverIterates = $condBooleanType->isFalse()->yes() && $context->isTopLevel();
+			if (!$alwaysIterates) {
+				foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+					$finalScope = $finalScope->mergeWith($continueExitPoint->getScope());
+				}
+			}
+
+			$breakExitPoints = $finalScopeResult->getExitPointsByType(Break_::class);
+			foreach ($breakExitPoints as $breakExitPoint) {
+				$finalScope = $finalScope->mergeWith($breakExitPoint->getScope());
+			}
+
+			$beforeCondBooleanType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($stmt->cond) : $scope->getNativeType($stmt->cond))->toBoolean();
+			$isIterableAtLeastOnce = $beforeCondBooleanType->isTrue()->yes();
+			$nodeCallback(new BreaklessWhileLoopNode($stmt, $finalScopeResult->getExitPoints()), $bodyScopeMaybeRan);
+
+			if ($alwaysIterates) {
+				$isAlwaysTerminating = count($finalScopeResult->getExitPointsByType(Break_::class)) === 0;
+			} elseif ($isIterableAtLeastOnce) {
+				$isAlwaysTerminating = $finalScopeResult->isAlwaysTerminating();
+			} else {
+				$isAlwaysTerminating = false;
+			}
+			$condScope = $condResult->getFalseyScope();
+			if (!$isIterableAtLeastOnce) {
+				if (!$this->polluteScopeWithLoopInitialAssignments) {
+					$condScope = $condScope->mergeWith($scope);
+				}
+				$finalScope = $finalScope->mergeWith($condScope);
+			}
+
+			$throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
+			$impurePoints = $condResult->getImpurePoints();
+			if (!$neverIterates) {
+				$throwPoints = array_merge($throwPoints, $finalScopeResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $finalScopeResult->getImpurePoints());
+			}
+
+			return new StatementResult(
+				$finalScope,
+				$finalScopeResult->hasYield() || $condResult->hasYield(),
+				$isAlwaysTerminating,
+				$finalScopeResult->getExitPointsForOuterLoop(),
+				$throwPoints,
+				$impurePoints,
+			);
+		} elseif ($stmt instanceof Do_) {
+			$finalScope = null;
+			$bodyScope = $scope;
+			$count = 0;
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+
+			if ($context->isTopLevel()) {
+				do {
+					$prevScope = $bodyScope;
+					$bodyScope = $bodyScope->mergeWith($scope);
+					$bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
+					}, $context->enterDeep())->filterOutLoopExitPoints();
+					$alwaysTerminating = $bodyScopeResult->isAlwaysTerminating();
+					$bodyScope = $bodyScopeResult->getScope();
+					foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+						$bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
+					}
+					$finalScope = $alwaysTerminating ? $finalScope : $bodyScope->mergeWith($finalScope);
+					foreach ($bodyScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
+						$finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
+					}
+					$bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, static function (): void {
+					}, ExpressionContext::createDeep())->getTruthyScope();
+					if ($bodyScope->equals($prevScope)) {
+						break;
+					}
+
+					if ($count >= self::GENERALIZE_AFTER_ITERATION) {
+						$bodyScope = $prevScope->generalizeWith($bodyScope);
+					}
+					$count++;
+				} while ($count < self::LOOP_SCOPE_ITERATIONS);
+
+				$bodyScope = $bodyScope->mergeWith($scope);
+			}
+
+			$bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
+			$bodyScope = $bodyScopeResult->getScope();
+			foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+				$bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
+			}
+			$condBooleanType = ($this->treatPhpDocTypesAsCertain ? $bodyScope->getType($stmt->cond) : $bodyScope->getNativeType($stmt->cond))->toBoolean();
+			$alwaysIterates = $condBooleanType->isTrue()->yes() && $context->isTopLevel();
+
+			$nodeCallback(new DoWhileLoopConditionNode($stmt->cond, $bodyScopeResult->getExitPoints()), $bodyScope);
+
+			if ($alwaysIterates) {
+				$alwaysTerminating = count($bodyScopeResult->getExitPointsByType(Break_::class)) === 0;
+			} else {
+				$alwaysTerminating = $bodyScopeResult->isAlwaysTerminating();
+			}
+			$finalScope = $alwaysTerminating ? $finalScope : $bodyScope->mergeWith($finalScope);
+			if ($finalScope === null) {
+				$finalScope = $scope;
+			}
+			if (!$alwaysTerminating) {
+				$condResult = $this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep());
+				$hasYield = $condResult->hasYield();
+				$throwPoints = $condResult->getThrowPoints();
+				$impurePoints = $condResult->getImpurePoints();
+				$finalScope = $condResult->getFalseyScope();
+			} else {
+				$this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep());
+			}
+			foreach ($bodyScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
+				$finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
+			}
+
+			return new StatementResult(
+				$finalScope,
+				$bodyScopeResult->hasYield() || $hasYield,
+				$alwaysTerminating,
+				$bodyScopeResult->getExitPointsForOuterLoop(),
+				array_merge($throwPoints, $bodyScopeResult->getThrowPoints()),
+				array_merge($impurePoints, $bodyScopeResult->getImpurePoints()),
+			);
+		} elseif ($stmt instanceof For_) {
+			$initScope = $scope;
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($stmt->init as $initExpr) {
+				$initResult = $this->processExprNode($stmt, $initExpr, $initScope, $nodeCallback, ExpressionContext::createTopLevel());
+				$initScope = $initResult->getScope();
+				$hasYield = $hasYield || $initResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $initResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $initResult->getImpurePoints());
+			}
+
+			$bodyScope = $initScope;
+			$isIterableAtLeastOnce = TrinaryLogic::createYes();
+			$lastCondExpr = $stmt->cond[count($stmt->cond) - 1] ?? null;
+			foreach ($stmt->cond as $condExpr) {
+				$condResult = $this->processExprNode($stmt, $condExpr, $bodyScope, static function (): void {
+				}, ExpressionContext::createDeep());
+				$initScope = $condResult->getScope();
+				$condResultScope = $condResult->getScope();
+
+				if ($condExpr === $lastCondExpr) {
+					$condTruthiness = ($this->treatPhpDocTypesAsCertain ? $condResultScope->getType($condExpr) : $condResultScope->getNativeType($condExpr))->toBoolean();
+					$isIterableAtLeastOnce = $isIterableAtLeastOnce->and($condTruthiness->isTrue());
+				}
+
+				$hasYield = $hasYield || $condResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $condResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $condResult->getImpurePoints());
+				$bodyScope = $condResult->getTruthyScope();
+			}
+
+			if ($context->isTopLevel()) {
+				$count = 0;
+				do {
+					$prevScope = $bodyScope;
+					$bodyScope = $bodyScope->mergeWith($initScope);
+					if ($lastCondExpr !== null) {
+						$bodyScope = $this->processExprNode($stmt, $lastCondExpr, $bodyScope, static function (): void {
+						}, ExpressionContext::createDeep())->getTruthyScope();
+					}
+					$bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
+					}, $context->enterDeep())->filterOutLoopExitPoints();
+					$bodyScope = $bodyScopeResult->getScope();
+					foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+						$bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
+					}
+					foreach ($stmt->loop as $loopExpr) {
+						$exprResult = $this->processExprNode($stmt, $loopExpr, $bodyScope, static function (): void {
+						}, ExpressionContext::createTopLevel());
+						$bodyScope = $exprResult->getScope();
+						$hasYield = $hasYield || $exprResult->hasYield();
+						$throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
+						$impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
+					}
+
+					if ($bodyScope->equals($prevScope)) {
+						break;
+					}
+
+					if ($count >= self::GENERALIZE_AFTER_ITERATION) {
+						$bodyScope = $prevScope->generalizeWith($bodyScope);
+					}
+					$count++;
+				} while ($count < self::LOOP_SCOPE_ITERATIONS);
+			}
+
+			$bodyScope = $bodyScope->mergeWith($initScope);
+
+			$alwaysIterates = TrinaryLogic::createFromBoolean($context->isTopLevel());
+			if ($lastCondExpr !== null) {
+				$alwaysIterates = $alwaysIterates->and($bodyScope->getType($lastCondExpr)->toBoolean()->isTrue());
+				$bodyScope = $this->processExprNode($stmt, $lastCondExpr, $bodyScope, $nodeCallback, ExpressionContext::createDeep())->getTruthyScope();
+			}
+
+			$finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
+			$finalScope = $finalScopeResult->getScope();
+			foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+				$finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
+			}
+
+			$loopScope = $finalScope;
+			foreach ($stmt->loop as $loopExpr) {
+				$loopScope = $this->processExprNode($stmt, $loopExpr, $loopScope, $nodeCallback, ExpressionContext::createTopLevel())->getScope();
+			}
+			$finalScope = $finalScope->generalizeWith($loopScope);
+
+			if ($lastCondExpr !== null) {
+				$finalScope = $finalScope->filterByFalseyValue($lastCondExpr);
+			}
+
+			foreach ($finalScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
+				$finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
+			}
+
+			if ($isIterableAtLeastOnce->no() || $finalScopeResult->isAlwaysTerminating()) {
+				if ($this->polluteScopeWithLoopInitialAssignments) {
+					$finalScope = $initScope;
+				} else {
+					$finalScope = $scope;
+				}
+
+			} elseif ($isIterableAtLeastOnce->maybe()) {
+				if ($this->polluteScopeWithLoopInitialAssignments) {
+					$finalScope = $finalScope->mergeWith($initScope);
+				} else {
+					$finalScope = $finalScope->mergeWith($scope);
+				}
+			} else {
+				if (!$this->polluteScopeWithLoopInitialAssignments) {
+					$finalScope = $finalScope->mergeWith($scope);
+				}
+			}
+
+			if ($alwaysIterates->yes()) {
+				$isAlwaysTerminating = count($finalScopeResult->getExitPointsByType(Break_::class)) === 0;
+			} elseif ($isIterableAtLeastOnce->yes()) {
+				$isAlwaysTerminating = $finalScopeResult->isAlwaysTerminating();
+			} else {
+				$isAlwaysTerminating = false;
+			}
+
+			return new StatementResult(
+				$finalScope,
+				$finalScopeResult->hasYield() || $hasYield,
+				$isAlwaysTerminating,
+				$finalScopeResult->getExitPointsForOuterLoop(),
+				array_merge($throwPoints, $finalScopeResult->getThrowPoints()),
+				array_merge($impurePoints, $finalScopeResult->getImpurePoints()),
+			);
+		} elseif ($stmt instanceof Switch_) {
+			$condResult = $this->processExprNode($stmt, $stmt->cond, $scope, $nodeCallback, ExpressionContext::createDeep());
+			$scope = $condResult->getScope();
+			$scopeForBranches = $scope;
+			$finalScope = null;
+			$prevScope = null;
+			$hasDefaultCase = false;
+			$alwaysTerminating = true;
+			$hasYield = $condResult->hasYield();
+			$exitPointsForOuterLoop = [];
+			$throwPoints = $condResult->getThrowPoints();
+			$impurePoints = $condResult->getImpurePoints();
+			foreach ($stmt->cases as $caseNode) {
+				if ($caseNode->cond !== null) {
+					$condExpr = new BinaryOp\Equal($stmt->cond, $caseNode->cond);
+					$caseResult = $this->processExprNode($stmt, $caseNode->cond, $scopeForBranches, $nodeCallback, ExpressionContext::createDeep());
+					$scopeForBranches = $caseResult->getScope();
+					$hasYield = $hasYield || $caseResult->hasYield();
+					$throwPoints = array_merge($throwPoints, $caseResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $caseResult->getImpurePoints());
+					$branchScope = $caseResult->getTruthyScope()->filterByTruthyValue($condExpr);
+				} else {
+					$hasDefaultCase = true;
+					$branchScope = $scopeForBranches;
+				}
+
+				$branchScope = $branchScope->mergeWith($prevScope);
+				$branchScopeResult = $this->processStmtNodes($caseNode, $caseNode->stmts, $branchScope, $nodeCallback, $context);
+				$branchScope = $branchScopeResult->getScope();
+				$branchFinalScopeResult = $branchScopeResult->filterOutLoopExitPoints();
+				$hasYield = $hasYield || $branchFinalScopeResult->hasYield();
+				foreach ($branchScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
+					$alwaysTerminating = false;
+					$finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
+				}
+				foreach ($branchScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
+					$finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
+				}
+				$exitPointsForOuterLoop = array_merge($exitPointsForOuterLoop, $branchFinalScopeResult->getExitPointsForOuterLoop());
+				$throwPoints = array_merge($throwPoints, $branchFinalScopeResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $branchFinalScopeResult->getImpurePoints());
+				if ($branchScopeResult->isAlwaysTerminating()) {
+					$alwaysTerminating = $alwaysTerminating && $branchFinalScopeResult->isAlwaysTerminating();
+					$prevScope = null;
+					if (isset($condExpr)) {
+						$scopeForBranches = $scopeForBranches->filterByFalseyValue($condExpr);
+					}
+					if (!$branchFinalScopeResult->isAlwaysTerminating()) {
+						$finalScope = $branchScope->mergeWith($finalScope);
+					}
+				} else {
+					$prevScope = $branchScope;
+				}
+			}
+
+			$exhaustive = $scopeForBranches->getType($stmt->cond) instanceof NeverType;
+
+			if (!$hasDefaultCase && !$exhaustive) {
+				$alwaysTerminating = false;
+			}
+
+			if ($prevScope !== null && isset($branchFinalScopeResult)) {
+				$finalScope = $prevScope->mergeWith($finalScope);
+				$alwaysTerminating = $alwaysTerminating && $branchFinalScopeResult->isAlwaysTerminating();
+			}
+
+			if ((!$hasDefaultCase && !$exhaustive) || $finalScope === null) {
+				$finalScope = $scope->mergeWith($finalScope);
+			}
+
+			return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPointsForOuterLoop, $throwPoints, $impurePoints);
+		} elseif ($stmt instanceof TryCatch) {
+			$branchScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
+			$branchScope = $branchScopeResult->getScope();
+			$finalScope = $branchScopeResult->isAlwaysTerminating() ? null : $branchScope;
+
+			$exitPoints = [];
+			$finallyExitPoints = [];
+			$alwaysTerminating = $branchScopeResult->isAlwaysTerminating();
+			$hasYield = $branchScopeResult->hasYield();
+
+			if ($stmt->finally !== null) {
+				$finallyScope = $branchScope;
+			} else {
+				$finallyScope = null;
+			}
+			foreach ($branchScopeResult->getExitPoints() as $exitPoint) {
+				$finallyExitPoints[] = $exitPoint;
+				if ($exitPoint->getStatement() instanceof Node\Stmt\Expression && $exitPoint->getStatement()->expr instanceof Expr\Throw_) {
+					continue;
+				}
+				if ($finallyScope !== null) {
+					$finallyScope = $finallyScope->mergeWith($exitPoint->getScope());
+				}
+				$exitPoints[] = $exitPoint;
+			}
+
+			$throwPoints = $branchScopeResult->getThrowPoints();
+			$impurePoints = $branchScopeResult->getImpurePoints();
+			$throwPointsForLater = [];
+			$pastCatchTypes = new NeverType();
+
+			foreach ($stmt->catches as $catchNode) {
+				$nodeCallback($catchNode, $scope);
+
+				$originalCatchTypes = array_map(static fn (Name $name): Type => new ObjectType($name->toString()), $catchNode->types);
+				$catchTypes = array_map(static fn (Type $type): Type => TypeCombinator::remove($type, $pastCatchTypes), $originalCatchTypes);
+
+				$originalCatchType = TypeCombinator::union(...$originalCatchTypes);
+				$catchType = TypeCombinator::union(...$catchTypes);
+				$pastCatchTypes = TypeCombinator::union($pastCatchTypes, $originalCatchType);
+
+				$matchingThrowPoints = [];
+				$matchingCatchTypes = array_fill_keys(array_keys($originalCatchTypes), false);
+
+				// throwable matches all
+				foreach ($originalCatchTypes as $catchTypeIndex => $catchTypeItem) {
+					if (!$catchTypeItem->isSuperTypeOf(new ObjectType(Throwable::class))->yes()) {
+						continue;
+					}
+
+					foreach ($throwPoints as $throwPointIndex => $throwPoint) {
+						$matchingThrowPoints[$throwPointIndex] = $throwPoint;
+						$matchingCatchTypes[$catchTypeIndex] = true;
+					}
+				}
+
+				// explicit only
+				$onlyExplicitIsThrow = true;
+				if (count($matchingThrowPoints) === 0) {
+					foreach ($throwPoints as $throwPointIndex => $throwPoint) {
+						foreach ($catchTypes as $catchTypeIndex => $catchTypeItem) {
+							if ($catchTypeItem->isSuperTypeOf($throwPoint->getType())->no()) {
+								continue;
+							}
+
+							$matchingCatchTypes[$catchTypeIndex] = true;
+							if (!$throwPoint->isExplicit()) {
+								continue;
+							}
+							$throwNode = $throwPoint->getNode();
+							if (
+								!$throwNode instanceof Expr\Throw_
+								&& !($throwNode instanceof Node\Stmt\Expression && $throwNode->expr instanceof Expr\Throw_)
+							) {
+								$onlyExplicitIsThrow = false;
+							}
+							$matchingThrowPoints[$throwPointIndex] = $throwPoint;
+						}
+					}
+				}
+
+				// implicit only
+				if (count($matchingThrowPoints) === 0 || $onlyExplicitIsThrow) {
+					foreach ($throwPoints as $throwPointIndex => $throwPoint) {
+						if ($throwPoint->isExplicit()) {
+							continue;
+						}
+
+						foreach ($catchTypes as $catchTypeIndex => $catchTypeItem) {
+							if ($catchTypeItem->isSuperTypeOf($throwPoint->getType())->no()) {
+								continue;
+							}
+
+							$matchingThrowPoints[$throwPointIndex] = $throwPoint;
+						}
+					}
+				}
+
+				// include previously removed throw points
+				if (count($matchingThrowPoints) === 0) {
+					if ($originalCatchType->isSuperTypeOf(new ObjectType(Throwable::class))->yes()) {
+						foreach ($branchScopeResult->getThrowPoints() as $originalThrowPoint) {
+							if (!$originalThrowPoint->canContainAnyThrowable()) {
+								continue;
+							}
+
+							$matchingThrowPoints[] = $originalThrowPoint;
+							$matchingCatchTypes = array_fill_keys(array_keys($originalCatchTypes), true);
+						}
+					}
+				}
+
+				// emit error
+				foreach ($matchingCatchTypes as $catchTypeIndex => $matched) {
+					if ($matched) {
+						continue;
+					}
+					$nodeCallback(new CatchWithUnthrownExceptionNode($catchNode, $catchTypes[$catchTypeIndex], $originalCatchTypes[$catchTypeIndex]), $scope);
+				}
+
+				if (count($matchingThrowPoints) === 0) {
+					continue;
+				}
+
+				// recompute throw points
+				$newThrowPoints = [];
+				foreach ($throwPoints as $throwPoint) {
+					$newThrowPoint = $throwPoint->subtractCatchType($originalCatchType);
+
+					if ($newThrowPoint->getType() instanceof NeverType) {
+						continue;
+					}
+
+					$newThrowPoints[] = $newThrowPoint;
+				}
+				$throwPoints = $newThrowPoints;
+
+				$catchScope = null;
+				foreach ($matchingThrowPoints as $matchingThrowPoint) {
+					if ($catchScope === null) {
+						$catchScope = $matchingThrowPoint->getScope();
+					} else {
+						$catchScope = $catchScope->mergeWith($matchingThrowPoint->getScope());
+					}
+				}
+
+				$variableName = null;
+				if ($catchNode->var !== null) {
+					if (!is_string($catchNode->var->name)) {
+						throw new ShouldNotHappenException();
+					}
+
+					$variableName = $catchNode->var->name;
+				}
+
+				$catchScopeResult = $this->processStmtNodes($catchNode, $catchNode->stmts, $catchScope->enterCatchType($catchType, $variableName), $nodeCallback, $context);
+				$catchScopeForFinally = $catchScopeResult->getScope();
+
+				$finalScope = $catchScopeResult->isAlwaysTerminating() ? $finalScope : $catchScopeResult->getScope()->mergeWith($finalScope);
+				$alwaysTerminating = $alwaysTerminating && $catchScopeResult->isAlwaysTerminating();
+				$hasYield = $hasYield || $catchScopeResult->hasYield();
+				$catchThrowPoints = $catchScopeResult->getThrowPoints();
+				$impurePoints = array_merge($impurePoints, $catchScopeResult->getImpurePoints());
+				$throwPointsForLater = array_merge($throwPointsForLater, $catchThrowPoints);
+
+				if ($finallyScope !== null) {
+					$finallyScope = $finallyScope->mergeWith($catchScopeForFinally);
+				}
+				foreach ($catchScopeResult->getExitPoints() as $exitPoint) {
+					$finallyExitPoints[] = $exitPoint;
+					if ($exitPoint->getStatement() instanceof Node\Stmt\Expression && $exitPoint->getStatement()->expr instanceof Expr\Throw_) {
+						continue;
+					}
+					if ($finallyScope !== null) {
+						$finallyScope = $finallyScope->mergeWith($exitPoint->getScope());
+					}
+					$exitPoints[] = $exitPoint;
+				}
+
+				foreach ($catchThrowPoints as $catchThrowPoint) {
+					if ($finallyScope === null) {
+						continue;
+					}
+					$finallyScope = $finallyScope->mergeWith($catchThrowPoint->getScope());
+				}
+			}
+
+			if ($finalScope === null) {
+				$finalScope = $scope;
+			}
+
+			foreach ($throwPoints as $throwPoint) {
+				if ($finallyScope === null) {
+					continue;
+				}
+				$finallyScope = $finallyScope->mergeWith($throwPoint->getScope());
+			}
+
+			if ($finallyScope !== null) {
+				$originalFinallyScope = $finallyScope;
+				$finallyResult = $this->processStmtNodes($stmt->finally, $stmt->finally->stmts, $finallyScope, $nodeCallback, $context);
+				$alwaysTerminating = $alwaysTerminating || $finallyResult->isAlwaysTerminating();
+				$hasYield = $hasYield || $finallyResult->hasYield();
+				$throwPointsForLater = array_merge($throwPointsForLater, $finallyResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $finallyResult->getImpurePoints());
+				$finallyScope = $finallyResult->getScope();
+				$finalScope = $finallyResult->isAlwaysTerminating() ? $finalScope : $finalScope->processFinallyScope($finallyScope, $originalFinallyScope);
+				if (count($finallyResult->getExitPoints()) > 0) {
+					$nodeCallback(new FinallyExitPointsNode(
+						$finallyResult->getExitPoints(),
+						$finallyExitPoints,
+					), $scope);
+				}
+				$exitPoints = array_merge($exitPoints, $finallyResult->getExitPoints());
+			}
+
+			return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, array_merge($throwPoints, $throwPointsForLater), $impurePoints);
+		} elseif ($stmt instanceof Unset_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($stmt->vars as $var) {
+				$scope = $this->lookForSetAllowedUndefinedExpressions($scope, $var);
+				$exprResult = $this->processExprNode($stmt, $var, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $exprResult->getScope();
+				$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
+				$hasYield = $hasYield || $exprResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
+				if ($var instanceof ArrayDimFetch && $var->dim !== null) {
+					$cloningTraverser = new NodeTraverser();
+					$cloningTraverser->addVisitor(new CloningVisitor());
+
+					/** @var Expr $clonedVar */
+					[$clonedVar] = $cloningTraverser->traverse([$var->var]);
+
+					$traverser = new NodeTraverser();
+					$traverser->addVisitor(new class () extends NodeVisitorAbstract {
+
+						public function leaveNode(Node $node): ?ExistingArrayDimFetch
+						{
+							if (!$node instanceof ArrayDimFetch || $node->dim === null) {
+								return null;
+							}
+
+							return new ExistingArrayDimFetch($node->var, $node->dim);
+						}
+
+					});
+
+					/** @var Expr $clonedVar */
+					[$clonedVar] = $traverser->traverse([$clonedVar]);
+					$scope = $this->processAssignVar(
+						$scope,
+						$stmt,
+						$clonedVar,
+						new UnsetOffsetExpr($var->var, $var->dim),
+						static function (Node $node, Scope $scope) use ($nodeCallback): void {
+							if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
+								return;
+							}
+
+							$nodeCallback($node, $scope);
+						},
+						ExpressionContext::createDeep(),
+						static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+						false,
+					)->getScope();
+				} elseif ($var instanceof PropertyFetch) {
+					$scope = $scope->invalidateExpression($var);
+					$impurePoints[] = new ImpurePoint(
+						$scope,
+						$var,
+						'propertyUnset',
+						'property unset',
+						true,
+					);
+				} else {
+					$scope = $scope->invalidateExpression($var);
+				}
+
+			}
+		} elseif ($stmt instanceof Node\Stmt\Use_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($stmt->uses as $use) {
+				$nodeCallback($use, $scope);
+			}
+		} elseif ($stmt instanceof Node\Stmt\Global_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [
+				new ImpurePoint(
+					$scope,
+					$stmt,
+					'global',
+					'global variable',
+					true,
+				),
+			];
+			$vars = [];
+			foreach ($stmt->vars as $var) {
+				if (!$var instanceof Variable) {
+					throw new ShouldNotHappenException();
+				}
+				$scope = $this->lookForSetAllowedUndefinedExpressions($scope, $var);
+				$varResult = $this->processExprNode($stmt, $var, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$impurePoints = array_merge($impurePoints, $varResult->getImpurePoints());
+				$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
+
+				if (!is_string($var->name)) {
+					continue;
+				}
+
+				$scope = $scope->assignVariable($var->name, new MixedType(), new MixedType(), TrinaryLogic::createYes());
+				$vars[] = $var->name;
+			}
+			$scope = $this->processVarAnnotation($scope, $vars, $stmt);
+		} elseif ($stmt instanceof Static_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [
+				new ImpurePoint(
+					$scope,
+					$stmt,
+					'static',
+					'static variable',
+					true,
+				),
+			];
+
+			$vars = [];
+			foreach ($stmt->vars as $var) {
+				if (!is_string($var->var->name)) {
+					throw new ShouldNotHappenException();
+				}
+
+				if ($var->default !== null) {
+					$defaultExprResult = $this->processExprNode($stmt, $var->default, $scope, $nodeCallback, ExpressionContext::createDeep());
+					$impurePoints = array_merge($impurePoints, $defaultExprResult->getImpurePoints());
+				}
+
+				$scope = $scope->enterExpressionAssign($var->var);
+				$varResult = $this->processExprNode($stmt, $var->var, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$impurePoints = array_merge($impurePoints, $varResult->getImpurePoints());
+				$scope = $scope->exitExpressionAssign($var->var);
+
+				$scope = $scope->assignVariable($var->var->name, new MixedType(), new MixedType(), TrinaryLogic::createYes());
+				$vars[] = $var->var->name;
+			}
+
+			$scope = $this->processVarAnnotation($scope, $vars, $stmt);
+		} elseif ($stmt instanceof Node\Stmt\Const_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($stmt->consts as $const) {
+				$nodeCallback($const, $scope);
+				$constResult = $this->processExprNode($stmt, $const->value, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$impurePoints = array_merge($impurePoints, $constResult->getImpurePoints());
+				if ($const->namespacedName !== null) {
+					$constantName = new Name\FullyQualified($const->namespacedName->toString());
+				} else {
+					$constantName = new Name\FullyQualified($const->name->toString());
+				}
+				$scope = $scope->assignExpression(new ConstFetch($constantName), $scope->getType($const->value), $scope->getNativeType($const->value));
+			}
+		} elseif ($stmt instanceof Node\Stmt\ClassConst) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
+			foreach ($stmt->consts as $const) {
+				$nodeCallback($const, $scope);
+				$constResult = $this->processExprNode($stmt, $const->value, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$impurePoints = array_merge($impurePoints, $constResult->getImpurePoints());
+				if ($scope->getClassReflection() === null) {
+					throw new ShouldNotHappenException();
+				}
+				$scope = $scope->assignExpression(
+					new Expr\ClassConstFetch(new Name\FullyQualified($scope->getClassReflection()->getName()), $const->name),
+					$scope->getType($const->value),
+					$scope->getNativeType($const->value),
+				);
+			}
+		} elseif ($stmt instanceof Node\Stmt\EnumCase) {
+			$hasYield = false;
+			$throwPoints = [];
+			$this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
+			$impurePoints = [];
+			if ($stmt->expr !== null) {
+				$exprResult = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
+				$impurePoints = $exprResult->getImpurePoints();
+			}
+		} elseif ($stmt instanceof InlineHTML) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [
+				new ImpurePoint($scope, $stmt, 'betweenPhpTags', 'output between PHP opening and closing tags', true),
+			];
+		} elseif ($stmt instanceof Node\Stmt\Block) {
+			$result = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
+			if ($this->polluteScopeWithBlock) {
+				return $result;
+			}
+
+			return new StatementResult(
+				$scope->mergeWith($result->getScope()),
+				$result->hasYield(),
+				$result->isAlwaysTerminating(),
+				$result->getExitPoints(),
+				$result->getThrowPoints(),
+				$result->getImpurePoints(),
+				$result->getEndStatements(),
+			);
+		} elseif ($stmt instanceof Node\Stmt\Nop) {
+			$hasYield = false;
+			$throwPoints = $overridingThrowPoints ?? [];
+			$impurePoints = [];
+		} elseif ($stmt instanceof Node\Stmt\GroupUse) {
+			$hasYield = false;
+			$throwPoints = [];
+			foreach ($stmt->uses as $use) {
+				$nodeCallback($use, $scope);
+			}
+			$impurePoints = [];
+		} else {
+			$hasYield = false;
+			$throwPoints = $overridingThrowPoints ?? [];
+			$impurePoints = [];
+		}
+
+		return new StatementResult($scope, $hasYield, false, [], $throwPoints, $impurePoints);
+	}
+
+	/**
+	 * @return array{bool, string|null}
+	 */
+	private function getDeprecatedAttribute(Scope $scope, Node\Stmt\Function_|Node\Stmt\ClassMethod|Node\PropertyHook $stmt): array
+	{
+		$initializerExprContext = InitializerExprContext::fromStubParameter(
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->getFile(),
+			$stmt,
+		);
+		$isDeprecated = false;
+		$deprecatedDescription = null;
+		$deprecatedDescriptionType = null;
+		foreach ($stmt->attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				if ($attr->name->toString() !== 'Deprecated') {
+					continue;
+				}
+				$isDeprecated = true;
+				$arguments = $attr->args;
+				foreach ($arguments as $i => $arg) {
+					$argName = $arg->name;
+					if ($argName === null) {
+						if ($i !== 0) {
+							continue;
+						}
+
+						$deprecatedDescriptionType = $this->initializerExprTypeResolver->getType($arg->value, $initializerExprContext);
+						break;
+					}
+
+					if ($argName->toString() !== 'message') {
+						continue;
+					}
+
+					$deprecatedDescriptionType = $this->initializerExprTypeResolver->getType($arg->value, $initializerExprContext);
+					break;
+				}
+			}
+		}
+
+		if ($deprecatedDescriptionType !== null) {
+			$constantStrings = $deprecatedDescriptionType->getConstantStrings();
+			if (count($constantStrings) === 1) {
+				$deprecatedDescription = $constantStrings[0]->getValue();
+			}
+		}
+
+		return [$isDeprecated, $deprecatedDescription];
+	}
+
+	/**
+	 * @return ThrowPoint[]|null
+	 */
+	private function getOverridingThrowPoints(Node\Stmt $statement, MutatingScope $scope): ?array
+	{
+		foreach ($statement->getComments() as $comment) {
+			if (!$comment instanceof Doc) {
+				continue;
+			}
+
+			$function = $scope->getFunction();
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$scope->getFile(),
+				$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+				$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+				$function !== null ? $function->getName() : null,
+				$comment->getText(),
+			);
+
+			$throwsTag = $resolvedPhpDoc->getThrowsTag();
+			if ($throwsTag !== null) {
+				$throwsType = $throwsTag->getType();
+				if ($throwsType->isVoid()->yes()) {
+					return [];
+				}
+
+				return [ThrowPoint::createExplicit($scope, $throwsType, $statement, false)];
+			}
+		}
+
+		return null;
+	}
+
+	private function getCurrentClassReflection(Node\Stmt\ClassLike $stmt, string $className, Scope $scope): ClassReflection
+	{
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return $this->createAstClassReflection($stmt, $className, $scope);
+		}
+
+		$defaultClassReflection = $this->reflectionProvider->getClass($className);
+		if ($defaultClassReflection->getFileName() !== $scope->getFile()) {
+			return $this->createAstClassReflection($stmt, $className, $scope);
+		}
+
+		$startLine = $defaultClassReflection->getNativeReflection()->getStartLine();
+		if ($startLine !== $stmt->getStartLine()) {
+			return $this->createAstClassReflection($stmt, $className, $scope);
+		}
+
+		return $defaultClassReflection;
+	}
+
+	private function createAstClassReflection(Node\Stmt\ClassLike $stmt, string $className, Scope $scope): ClassReflection
+	{
+		$nodeToReflection = new NodeToReflection();
+		$betterReflectionClass = $nodeToReflection->__invoke(
+			$this->reflector,
+			$stmt,
+			new LocatedSource(FileReader::read($scope->getFile()), $className, $scope->getFile()),
+			$scope->getNamespace() !== null ? new Node\Stmt\Namespace_(new Name($scope->getNamespace())) : null,
+		);
+		if (!$betterReflectionClass instanceof \PHPStan\BetterReflection\Reflection\ReflectionClass) {
+			throw new ShouldNotHappenException();
+		}
+
+		$enumAdapter = base64_decode('UEhQU3RhblxCZXR0ZXJSZWZsZWN0aW9uXFJlZmxlY3Rpb25cQWRhcHRlclxSZWZsZWN0aW9uRW51bQ==', true);
+
+		return new ClassReflection(
+			$this->reflectionProvider,
+			$this->initializerExprTypeResolver,
+			$this->fileTypeMapper,
+			$this->stubPhpDocProvider,
+			$this->phpDocInheritanceResolver,
+			$this->phpVersion,
+			$this->signatureMapProvider,
+			$this->attributeReflectionFactory,
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getPropertiesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getMethodsClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getAllowedSubTypesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsPropertyClassReflectionExtension(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsMethodsClassReflectionExtension(),
+			$betterReflectionClass->getName(),
+			$betterReflectionClass instanceof ReflectionEnum && PHP_VERSION_ID >= 80000 ? new $enumAdapter($betterReflectionClass) : new ReflectionClass($betterReflectionClass),
+			null,
+			null,
+			null,
+			$this->universalObjectCratesClasses,
+			sprintf('%s:%d', $scope->getFile(), $stmt->getStartLine()),
+		);
+	}
+
+	private function lookForSetAllowedUndefinedExpressions(MutatingScope $scope, Expr $expr): MutatingScope
+	{
+		return $this->lookForExpressionCallback($scope, $expr, static fn (MutatingScope $scope, Expr $expr): MutatingScope => $scope->setAllowedUndefinedExpression($expr));
+	}
+
+	private function lookForUnsetAllowedUndefinedExpressions(MutatingScope $scope, Expr $expr): MutatingScope
+	{
+		return $this->lookForExpressionCallback($scope, $expr, static fn (MutatingScope $scope, Expr $expr): MutatingScope => $scope->unsetAllowedUndefinedExpression($expr));
+	}
+
+	/**
+	 * @param Closure(MutatingScope $scope, Expr $expr): MutatingScope $callback
+	 */
+	private function lookForExpressionCallback(MutatingScope $scope, Expr $expr, Closure $callback): MutatingScope
+	{
+		if (!$expr instanceof ArrayDimFetch || $expr->dim !== null) {
+			$scope = $callback($scope, $expr);
+		}
+
+		if ($expr instanceof ArrayDimFetch) {
+			$scope = $this->lookForExpressionCallback($scope, $expr->var, $callback);
+		} elseif ($expr instanceof PropertyFetch || $expr instanceof Expr\NullsafePropertyFetch) {
+			$scope = $this->lookForExpressionCallback($scope, $expr->var, $callback);
+		} elseif ($expr instanceof StaticPropertyFetch && $expr->class instanceof Expr) {
+			$scope = $this->lookForExpressionCallback($scope, $expr->class, $callback);
+		} elseif ($expr instanceof List_) {
+			foreach ($expr->items as $item) {
+				if ($item === null) {
+					continue;
+				}
+
+				$scope = $this->lookForExpressionCallback($scope, $item->value, $callback);
+			}
+		}
+
+		return $scope;
+	}
+
+	private function ensureShallowNonNullability(MutatingScope $scope, Scope $originalScope, Expr $exprToSpecify): EnsuredNonNullabilityResult
+	{
+		$exprType = $scope->getType($exprToSpecify);
+		$isNull = $exprType->isNull();
+		if ($isNull->yes()) {
+			return new EnsuredNonNullabilityResult($scope, []);
+		}
+
+		// keep certainty
+		$certainty = TrinaryLogic::createYes();
+		$hasExpressionType = $originalScope->hasExpressionType($exprToSpecify);
+		if (!$hasExpressionType->no()) {
+			$certainty = $hasExpressionType;
+		}
+
+		$exprTypeWithoutNull = TypeCombinator::removeNull($exprType);
+		if ($exprType->equals($exprTypeWithoutNull)) {
+			$originalExprType = $originalScope->getType($exprToSpecify);
+			if (!$originalExprType->equals($exprTypeWithoutNull)) {
+				$originalNativeType = $originalScope->getNativeType($exprToSpecify);
+
+				return new EnsuredNonNullabilityResult($scope, [
+					new EnsuredNonNullabilityResultExpression($exprToSpecify, $originalExprType, $originalNativeType, $certainty),
+				]);
+			}
+			return new EnsuredNonNullabilityResult($scope, []);
+		}
+
+		$nativeType = $scope->getNativeType($exprToSpecify);
+		$scope = $scope->specifyExpressionType(
+			$exprToSpecify,
+			$exprTypeWithoutNull,
+			TypeCombinator::removeNull($nativeType),
+			TrinaryLogic::createYes(),
+		);
+
+		return new EnsuredNonNullabilityResult(
+			$scope,
+			[
+				new EnsuredNonNullabilityResultExpression($exprToSpecify, $exprType, $nativeType, $certainty),
+			],
+		);
+	}
+
+	private function ensureNonNullability(MutatingScope $scope, Expr $expr): EnsuredNonNullabilityResult
+	{
+		$specifiedExpressions = [];
+		$originalScope = $scope;
+		$scope = $this->lookForExpressionCallback($scope, $expr, function ($scope, $expr) use (&$specifiedExpressions, $originalScope) {
+			$result = $this->ensureShallowNonNullability($scope, $originalScope, $expr);
+			foreach ($result->getSpecifiedExpressions() as $specifiedExpression) {
+				$specifiedExpressions[] = $specifiedExpression;
+			}
+			return $result->getScope();
+		});
+
+		return new EnsuredNonNullabilityResult($scope, $specifiedExpressions);
+	}
+
+	/**
+	 * @param EnsuredNonNullabilityResultExpression[] $specifiedExpressions
+	 */
+	private function revertNonNullability(MutatingScope $scope, array $specifiedExpressions): MutatingScope
+	{
+		foreach ($specifiedExpressions as $specifiedExpressionResult) {
+			$scope = $scope->specifyExpressionType(
+				$specifiedExpressionResult->getExpression(),
+				$specifiedExpressionResult->getOriginalType(),
+				$specifiedExpressionResult->getOriginalNativeType(),
+				$specifiedExpressionResult->getCertainty(),
+			);
+		}
+
+		return $scope;
+	}
+
+	private function findEarlyTerminatingExpr(Expr $expr, Scope $scope): ?Expr
+	{
+		if (($expr instanceof MethodCall || $expr instanceof Expr\StaticCall) && $expr->name instanceof Node\Identifier) {
+			if (array_key_exists($expr->name->toLowerString(), $this->earlyTerminatingMethodNames)) {
+				if ($expr instanceof MethodCall) {
+					$methodCalledOnType = $scope->getType($expr->var);
+				} else {
+					if ($expr->class instanceof Name) {
+						$methodCalledOnType = $scope->resolveTypeByName($expr->class);
+					} else {
+						$methodCalledOnType = $scope->getType($expr->class);
+					}
+				}
+
+				foreach ($methodCalledOnType->getObjectClassNames() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+
+					$classReflection = $this->reflectionProvider->getClass($referencedClass);
+					foreach (array_merge([$referencedClass], $classReflection->getParentClassesNames(), $classReflection->getNativeReflection()->getInterfaceNames()) as $className) {
+						if (!isset($this->earlyTerminatingMethodCalls[$className])) {
+							continue;
+						}
+
+						if (in_array((string) $expr->name, $this->earlyTerminatingMethodCalls[$className], true)) {
+							return $expr;
+						}
+					}
+				}
+			}
+		}
+
+		if ($expr instanceof FuncCall && $expr->name instanceof Name) {
+			if (in_array((string) $expr->name, $this->earlyTerminatingFunctionCalls, true)) {
+				return $expr;
+			}
+		}
+
+		if ($expr instanceof Expr\Exit_ || $expr instanceof Expr\Throw_) {
+			return $expr;
+		}
+
+		$exprType = $scope->getType($expr);
+		if ($exprType instanceof NeverType && $exprType->isExplicit()) {
+			return $expr;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	public function processExprNode(Node\Stmt $stmt, Expr $expr, MutatingScope $scope, callable $nodeCallback, ExpressionContext $context): ExpressionResult
+	{
+		if ($expr instanceof Expr\CallLike && $expr->isFirstClassCallable()) {
+			if ($expr instanceof FuncCall) {
+				$newExpr = new FunctionCallableNode($expr->name, $expr);
+			} elseif ($expr instanceof MethodCall) {
+				$newExpr = new MethodCallableNode($expr->var, $expr->name, $expr);
+			} elseif ($expr instanceof StaticCall) {
+				$newExpr = new StaticMethodCallableNode($expr->class, $expr->name, $expr);
+			} elseif ($expr instanceof New_ && !$expr->class instanceof Class_) {
+				$newExpr = new InstantiationCallableNode($expr->class, $expr);
+			} else {
+				throw new ShouldNotHappenException();
+			}
+
+			return $this->processExprNode($stmt, $newExpr, $scope, $nodeCallback, $context);
+		}
+
+		$this->callNodeCallbackWithExpression($nodeCallback, $expr, $scope, $context);
+
+		if ($expr instanceof Variable) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			if ($expr->name instanceof Expr) {
+				return $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+			} elseif (in_array($expr->name, Scope::SUPERGLOBAL_VARIABLES, true)) {
+				$impurePoints[] = new ImpurePoint($scope, $expr, 'superglobal', 'access to superglobal variable', true);
+			}
+		} elseif ($expr instanceof Assign || $expr instanceof AssignRef) {
+			$result = $this->processAssignVar(
+				$scope,
+				$stmt,
+				$expr->var,
+				$expr->expr,
+				$nodeCallback,
+				$context,
+				function (MutatingScope $scope) use ($stmt, $expr, $nodeCallback, $context): ExpressionResult {
+					$impurePoints = [];
+					if ($expr instanceof AssignRef) {
+						$referencedExpr = $expr->expr;
+						while ($referencedExpr instanceof ArrayDimFetch) {
+							$referencedExpr = $referencedExpr->var;
+						}
+
+						if ($referencedExpr instanceof PropertyFetch || $referencedExpr instanceof StaticPropertyFetch) {
+							$impurePoints[] = new ImpurePoint(
+								$scope,
+								$expr,
+								'propertyAssignByRef',
+								'property assignment by reference',
+								false,
+							);
+						}
+
+						$scope = $scope->enterExpressionAssign($expr->expr);
+					}
+
+					if ($expr->var instanceof Variable && is_string($expr->var->name)) {
+						$context = $context->enterRightSideAssign(
+							$expr->var->name,
+							$scope->getType($expr->expr),
+							$scope->getNativeType($expr->expr),
+						);
+					}
+
+					$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+					$hasYield = $result->hasYield();
+					$throwPoints = $result->getThrowPoints();
+					$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+					$scope = $result->getScope();
+
+					if ($expr instanceof AssignRef) {
+						$scope = $scope->exitExpressionAssign($expr->expr);
+					}
+
+					return new ExpressionResult($scope, $hasYield, $throwPoints, $impurePoints);
+				},
+				true,
+			);
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$vars = $this->getAssignedVariables($expr->var);
+			if (count($vars) > 0) {
+				$varChangedScope = false;
+				$scope = $this->processVarAnnotation($scope, $vars, $stmt, $varChangedScope);
+				if (!$varChangedScope) {
+					$scope = $this->processStmtVarAnnotation($scope, $stmt, null, $nodeCallback);
+				}
+			}
+		} elseif ($expr instanceof Expr\AssignOp) {
+			$result = $this->processAssignVar(
+				$scope,
+				$stmt,
+				$expr->var,
+				$expr,
+				$nodeCallback,
+				$context,
+				function (MutatingScope $scope) use ($stmt, $expr, $nodeCallback, $context): ExpressionResult {
+					$originalScope = $scope;
+					if ($expr instanceof Expr\AssignOp\Coalesce) {
+						$scope = $scope->filterByFalseyValue(
+							new BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
+						);
+					}
+
+					$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+					if ($expr instanceof Expr\AssignOp\Coalesce) {
+						return new ExpressionResult(
+							$result->getScope()->mergeWith($originalScope),
+							$result->hasYield(),
+							$result->getThrowPoints(),
+							$result->getImpurePoints(),
+						);
+					}
+
+					return $result;
+				},
+				$expr instanceof Expr\AssignOp\Coalesce,
+			);
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			if (
+				($expr instanceof Expr\AssignOp\Div || $expr instanceof Expr\AssignOp\Mod) &&
+				!$scope->getType($expr->expr)->toNumber()->isSuperTypeOf(new ConstantIntegerType(0))->no()
+			) {
+				$throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(DivisionByZeroError::class), $expr, false);
+			}
+		} elseif ($expr instanceof FuncCall) {
+			$parametersAcceptor = null;
+			$functionReflection = null;
+			$throwPoints = [];
+			$impurePoints = [];
+			if ($expr->name instanceof Expr) {
+				$nameType = $scope->getType($expr->name);
+				if (!$nameType->isCallable()->no()) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+						$scope,
+						$expr->getArgs(),
+						$nameType->getCallableParametersAcceptors($scope),
+						null,
+					);
+				}
+
+				$nameResult = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $nameResult->getScope();
+				$throwPoints = $nameResult->getThrowPoints();
+				$impurePoints = $nameResult->getImpurePoints();
+				if (
+					$nameType->isObject()->yes()
+					&& $nameType->isCallable()->yes()
+					&& (new ObjectType(Closure::class))->isSuperTypeOf($nameType)->no()
+				) {
+					$invokeResult = $this->processExprNode(
+						$stmt,
+						new MethodCall($expr->name, '__invoke', $expr->getArgs(), $expr->getAttributes()),
+						$scope,
+						static function (): void {
+						},
+						$context->enterDeep(),
+					);
+					$throwPoints = array_merge($throwPoints, $invokeResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $invokeResult->getImpurePoints());
+				} elseif ($parametersAcceptor instanceof CallableParametersAcceptor) {
+					$callableThrowPoints = array_map(static fn (SimpleThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $expr, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $expr), $parametersAcceptor->getThrowPoints());
+					if (!$this->implicitThrows) {
+						$callableThrowPoints = array_values(array_filter($callableThrowPoints, static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit()));
+					}
+					$throwPoints = array_merge($throwPoints, $callableThrowPoints);
+					$impurePoints = array_merge($impurePoints, array_map(static fn (SimpleImpurePoint $impurePoint) => new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain()), $parametersAcceptor->getImpurePoints()));
+
+					$scope = $this->processImmediatelyCalledCallable($scope, $parametersAcceptor->getInvalidateExpressions(), $parametersAcceptor->getUsedVariables());
+				}
+			} elseif ($this->reflectionProvider->hasFunction($expr->name, $scope)) {
+				$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
+				$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+					$scope,
+					$expr->getArgs(),
+					$functionReflection->getVariants(),
+					$functionReflection->getNamedArgumentsVariants(),
+				);
+				$impurePoint = SimpleImpurePoint::createFromVariant($functionReflection, $parametersAcceptor);
+				if ($impurePoint !== null) {
+					$impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
+				}
+			} else {
+				$impurePoints[] = new ImpurePoint(
+					$scope,
+					$expr,
+					'functionCall',
+					'call to unknown function',
+					false,
+				);
+			}
+
+			if ($parametersAcceptor !== null) {
+				$expr = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $expr) ?? $expr;
+			}
+			$result = $this->processArgs($stmt, $functionReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context);
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+
+			if ($functionReflection !== null) {
+				$functionThrowPoint = $this->getFunctionThrowPoint($functionReflection, $parametersAcceptor, $expr, $scope);
+				if ($functionThrowPoint !== null) {
+					$throwPoints[] = $functionThrowPoint;
+				}
+			} else {
+				$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['json_encode', 'json_decode'], true)
+			) {
+				$scope = $scope->invalidateExpression(new FuncCall(new Name('json_last_error'), []))
+					->invalidateExpression(new FuncCall(new Name\FullyQualified('json_last_error'), []))
+					->invalidateExpression(new FuncCall(new Name('json_last_error_msg'), []))
+					->invalidateExpression(new FuncCall(new Name\FullyQualified('json_last_error_msg'), []));
+			}
+
+			if (
+				$functionReflection !== null
+				&& $functionReflection->getName() === 'file_put_contents'
+				&& count($expr->getArgs()) > 0
+			) {
+				$scope = $scope->invalidateExpression(new FuncCall(new Name('file_get_contents'), [$expr->getArgs()[0]]))
+					->invalidateExpression(new FuncCall(new Name\FullyQualified('file_get_contents'), [$expr->getArgs()[0]]));
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['array_pop', 'array_shift'], true)
+				&& count($expr->getArgs()) >= 1
+			) {
+				$arrayArg = $expr->getArgs()[0]->value;
+
+				$arrayArgType = $scope->getType($arrayArg);
+				$arrayArgNativeType = $scope->getNativeType($arrayArg);
+
+				$isArrayPop = $functionReflection->getName() === 'array_pop';
+				$scope = $scope->invalidateExpression($arrayArg)->assignExpression(
+					$arrayArg,
+					$isArrayPop ? $arrayArgType->popArray() : $arrayArgType->shiftArray(),
+					$isArrayPop ? $arrayArgNativeType->popArray() : $arrayArgNativeType->shiftArray(),
+				);
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['array_push', 'array_unshift'], true)
+				&& count($expr->getArgs()) >= 2
+			) {
+				$arrayType = $this->getArrayFunctionAppendingType($functionReflection, $scope, $expr);
+				$arrayNativeType = $this->getArrayFunctionAppendingType($functionReflection, $scope->doNotTreatPhpDocTypesAsCertain(), $expr);
+
+				$arrayArg = $expr->getArgs()[0]->value;
+				$scope = $scope->invalidateExpression($arrayArg)->assignExpression($arrayArg, $arrayType, $arrayNativeType);
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['fopen', 'file_get_contents'], true)
+			) {
+				$scope = $scope->assignVariable('http_response_header', TypeCombinator::intersect(new ArrayType(new IntegerType(), new StringType()), new AccessoryArrayListType()), new ArrayType(new IntegerType(), new StringType()), TrinaryLogic::createYes());
+			}
+
+			if (
+				$functionReflection !== null
+				&& $functionReflection->getName() === 'shuffle'
+			) {
+				$arrayArg = $expr->getArgs()[0]->value;
+				$scope = $scope->assignExpression(
+					$arrayArg,
+					$scope->getType($arrayArg)->shuffleArray(),
+					$scope->getNativeType($arrayArg)->shuffleArray(),
+				);
+			}
+
+			if (
+				$functionReflection !== null
+				&& $functionReflection->getName() === 'array_splice'
+				&& count($expr->getArgs()) >= 1
+			) {
+				$arrayArg = $expr->getArgs()[0]->value;
+				$arrayArgType = $scope->getType($arrayArg);
+				$valueType = $arrayArgType->getIterableValueType();
+				if (count($expr->getArgs()) >= 4) {
+					$replacementType = $scope->getType($expr->getArgs()[3]->value)->toArray();
+					$valueType = TypeCombinator::union($valueType, $replacementType->getIterableValueType());
+				}
+				$scope = $scope->invalidateExpression($arrayArg)->assignExpression(
+					$arrayArg,
+					new ArrayType($arrayArgType->getIterableKeyType(), $valueType),
+					new ArrayType($arrayArgType->getIterableKeyType(), $valueType),
+				);
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['sort', 'rsort', 'usort'], true)
+				&& count($expr->getArgs()) >= 1
+			) {
+				$arrayArg = $expr->getArgs()[0]->value;
+				$scope = $scope->assignExpression(
+					$arrayArg,
+					$this->getArraySortPreserveListFunctionType($scope->getType($arrayArg)),
+					$this->getArraySortPreserveListFunctionType($scope->getNativeType($arrayArg)),
+				);
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['natcasesort', 'natsort', 'arsort', 'asort', 'ksort', 'krsort', 'uasort', 'uksort'], true)
+				&& count($expr->getArgs()) >= 1
+			) {
+				$arrayArg = $expr->getArgs()[0]->value;
+				$scope = $scope->assignExpression(
+					$arrayArg,
+					$this->getArraySortDoNotPreserveListFunctionType($scope->getType($arrayArg)),
+					$this->getArraySortDoNotPreserveListFunctionType($scope->getNativeType($arrayArg)),
+				);
+			}
+
+			if (
+				$functionReflection !== null
+				&& $functionReflection->getName() === 'extract'
+			) {
+				$extractedArg = $expr->getArgs()[0]->value;
+				$extractedType = $scope->getType($extractedArg);
+				$constantArrays = $extractedType->getConstantArrays();
+				if (count($constantArrays) > 0) {
+					$properties = [];
+					$optionalProperties = [];
+					$refCount = [];
+					foreach ($constantArrays as $constantArray) {
+						foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+							if ($keyType->isString()->no()) {
+								// integers as variable names not allowed
+								continue;
+							}
+							$key = (string) $keyType->getValue();
+							$valueType = $constantArray->getValueTypes()[$i];
+							$optional = $constantArray->isOptionalKey($i);
+							if ($optional) {
+								$optionalProperties[] = $key;
+							}
+							if (isset($properties[$key])) {
+								$properties[$key] = TypeCombinator::union($properties[$key], $valueType);
+								$refCount[$key]++;
+							} else {
+								$properties[$key] = $valueType;
+								$refCount[$key] = 1;
+							}
+						}
+					}
+					foreach ($properties as $name => $type) {
+						$optional = in_array($name, $optionalProperties, true) || $refCount[$name] < count($constantArrays);
+						$scope = $scope->assignVariable($name, $type, $type, $optional ? TrinaryLogic::createMaybe() : TrinaryLogic::createYes());
+					}
+				} else {
+					$scope = $scope->afterExtractCall();
+				}
+			}
+
+			if (
+				$functionReflection !== null
+				&& in_array($functionReflection->getName(), ['clearstatcache', 'unlink'], true)
+			) {
+				$scope = $scope->afterClearstatcacheCall();
+			}
+
+			if (
+				$functionReflection !== null
+				&& str_starts_with($functionReflection->getName(), 'openssl')
+			) {
+				$scope = $scope->afterOpenSslCall($functionReflection->getName());
+			}
+
+		} elseif ($expr instanceof MethodCall) {
+			$originalScope = $scope;
+			if (
+				($expr->var instanceof Expr\Closure || $expr->var instanceof Expr\ArrowFunction)
+				&& $expr->name instanceof Node\Identifier
+				&& strtolower($expr->name->name) === 'call'
+				&& isset($expr->getArgs()[0])
+			) {
+				$closureCallScope = $scope->enterClosureCall(
+					$scope->getType($expr->getArgs()[0]->value),
+					$scope->getNativeType($expr->getArgs()[0]->value),
+				);
+			}
+
+			$result = $this->processExprNode($stmt, $expr->var, $closureCallScope ?? $scope, $nodeCallback, $context->enterDeep());
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $result->getScope();
+			if (isset($closureCallScope)) {
+				$scope = $scope->restoreOriginalScopeAfterClosureBind($originalScope);
+			}
+			$parametersAcceptor = null;
+			$methodReflection = null;
+			$calledOnType = $scope->getType($expr->var);
+			if ($expr->name instanceof Expr) {
+				$methodNameResult = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$throwPoints = array_merge($throwPoints, $methodNameResult->getThrowPoints());
+				$scope = $methodNameResult->getScope();
+			} else {
+				$methodName = $expr->name->name;
+				$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
+				if ($methodReflection !== null) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+						$scope,
+						$expr->getArgs(),
+						$methodReflection->getVariants(),
+						$methodReflection->getNamedArgumentsVariants(),
+					);
+
+					$methodThrowPoint = $this->getMethodThrowPoint($methodReflection, $parametersAcceptor, $expr, $scope);
+					if ($methodThrowPoint !== null) {
+						$throwPoints[] = $methodThrowPoint;
+					}
+				}
+			}
+
+			if ($methodReflection !== null) {
+				$impurePoint = SimpleImpurePoint::createFromVariant($methodReflection, $parametersAcceptor);
+				if ($impurePoint !== null) {
+					$impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
+				}
+			} else {
+				$impurePoints[] = new ImpurePoint(
+					$scope,
+					$expr,
+					'methodCall',
+					'call to unknown method',
+					false,
+				);
+			}
+
+			if ($parametersAcceptor !== null) {
+				$expr = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $expr) ?? $expr;
+			}
+
+			$result = $this->processArgs(
+				$stmt,
+				$methodReflection,
+				$methodReflection !== null ? $scope->getNakedMethod($calledOnType, $methodReflection->getName()) : null,
+				$parametersAcceptor,
+				$expr,
+				$scope,
+				$nodeCallback,
+				$context,
+			);
+			$scope = $result->getScope();
+
+			if ($methodReflection !== null) {
+				$hasSideEffects = $methodReflection->hasSideEffects();
+				if ($hasSideEffects->yes() || $methodReflection->getName() === '__construct') {
+					$nodeCallback(new InvalidateExprNode($expr->var), $scope);
+					$scope = $scope->invalidateExpression($expr->var, true);
+				}
+				if ($parametersAcceptor !== null && !$methodReflection->isStatic()) {
+					$selfOutType = $methodReflection->getSelfOutType();
+					if ($selfOutType !== null) {
+						$scope = $scope->assignExpression(
+							$expr->var,
+							TemplateTypeHelper::resolveTemplateTypes(
+								$selfOutType,
+								$parametersAcceptor->getResolvedTemplateTypeMap(),
+								$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+								TemplateTypeVariance::createCovariant(),
+							),
+							$scope->getNativeType($expr->var),
+						);
+					}
+				}
+
+				if (
+					$scope->isInClass()
+					&& $scope->getClassReflection()->getName() === $methodReflection->getDeclaringClass()->getName()
+					/*&& (
+						// should not be allowed but in practice has to be
+						$scope->getClassReflection()->isFinal()
+						|| $methodReflection->isFinal()->yes()
+						|| $methodReflection->isPrivate()
+					)*/
+					&& TypeUtils::findThisType($calledOnType) !== null
+				) {
+					$calledMethodScope = $this->processCalledMethod($methodReflection);
+					if ($calledMethodScope !== null) {
+						$scope = $scope->mergeInitializedProperties($calledMethodScope);
+					}
+				}
+			} else {
+				$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+			}
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+		} elseif ($expr instanceof Expr\NullsafeMethodCall) {
+			$nonNullabilityResult = $this->ensureShallowNonNullability($scope, $scope, $expr->var);
+			$exprResult = $this->processExprNode($stmt, new MethodCall($expr->var, $expr->name, $expr->args, array_merge($expr->getAttributes(), ['virtualNullsafeMethodCall' => true])), $nonNullabilityResult->getScope(), $nodeCallback, $context);
+			$scope = $this->revertNonNullability($exprResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
+
+			return new ExpressionResult(
+				$scope,
+				$exprResult->hasYield(),
+				$exprResult->getThrowPoints(),
+				$exprResult->getImpurePoints(),
+				static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
+				static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
+			);
+		} elseif ($expr instanceof StaticCall) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			if ($expr->class instanceof Expr) {
+				$objectClasses = $scope->getType($expr->class)->getObjectClassNames();
+				if (count($objectClasses) !== 1) {
+					$objectClasses = $scope->getType(new New_($expr->class))->getObjectClassNames();
+				}
+				if (count($objectClasses) === 1) {
+					$objectExprResult = $this->processExprNode($stmt, new StaticCall(new Name($objectClasses[0]), $expr->name, []), $scope, static function (): void {
+					}, $context->enterDeep());
+					$additionalThrowPoints = $objectExprResult->getThrowPoints();
+				} else {
+					$additionalThrowPoints = [ThrowPoint::createImplicit($scope, $expr)];
+				}
+				$classResult = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $classResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $classResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $classResult->getImpurePoints());
+				foreach ($additionalThrowPoints as $throwPoint) {
+					$throwPoints[] = $throwPoint;
+				}
+				$scope = $classResult->getScope();
+			}
+
+			$parametersAcceptor = null;
+			$methodReflection = null;
+			if ($expr->name instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$scope = $result->getScope();
+			} elseif ($expr->class instanceof Name) {
+				$classType = $scope->resolveTypeByName($expr->class);
+				$methodName = $expr->name->name;
+				if ($classType->hasMethod($methodName)->yes()) {
+					$methodReflection = $classType->getMethod($methodName, $scope);
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+						$scope,
+						$expr->getArgs(),
+						$methodReflection->getVariants(),
+						$methodReflection->getNamedArgumentsVariants(),
+					);
+
+					$methodThrowPoint = $this->getStaticMethodThrowPoint($methodReflection, $parametersAcceptor, $expr, $scope);
+					if ($methodThrowPoint !== null) {
+						$throwPoints[] = $methodThrowPoint;
+					}
+
+					$declaringClass = $methodReflection->getDeclaringClass();
+					if (
+						$declaringClass->getName() === 'Closure'
+						&& strtolower($methodName) === 'bind'
+					) {
+						$thisType = null;
+						$nativeThisType = null;
+						if (isset($expr->getArgs()[1])) {
+							$argType = $scope->getType($expr->getArgs()[1]->value);
+							if ($argType->isNull()->yes()) {
+								$thisType = null;
+							} else {
+								$thisType = $argType;
+							}
+
+							$nativeArgType = $scope->getNativeType($expr->getArgs()[1]->value);
+							if ($nativeArgType->isNull()->yes()) {
+								$nativeThisType = null;
+							} else {
+								$nativeThisType = $nativeArgType;
+							}
+						}
+						$scopeClasses = ['static'];
+						if (isset($expr->getArgs()[2])) {
+							$argValue = $expr->getArgs()[2]->value;
+							$argValueType = $scope->getType($argValue);
+
+							$directClassNames = $argValueType->getObjectClassNames();
+							if (count($directClassNames) > 0) {
+								$scopeClasses = $directClassNames;
+								$thisTypes = [];
+								foreach ($directClassNames as $directClassName) {
+									$thisTypes[] = new ObjectType($directClassName);
+								}
+								$thisType = TypeCombinator::union(...$thisTypes);
+							} else {
+								$thisType = $argValueType->getClassStringObjectType();
+								$scopeClasses = $thisType->getObjectClassNames();
+							}
+						}
+						$closureBindScope = $scope->enterClosureBind($thisType, $nativeThisType, $scopeClasses);
+					}
+				} else {
+					$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+				}
+			}
+
+			if ($methodReflection !== null) {
+				$impurePoint = SimpleImpurePoint::createFromVariant($methodReflection, $parametersAcceptor);
+				if ($impurePoint !== null) {
+					$impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
+				}
+			} else {
+				$impurePoints[] = new ImpurePoint(
+					$scope,
+					$expr,
+					'methodCall',
+					'call to unknown method',
+					false,
+				);
+			}
+
+			if ($parametersAcceptor !== null) {
+				$expr = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $expr) ?? $expr;
+			}
+			$result = $this->processArgs($stmt, $methodReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context, $closureBindScope ?? null);
+			$scope = $result->getScope();
+			$scopeFunction = $scope->getFunction();
+
+			if (
+				$methodReflection !== null
+				&& !$methodReflection->isStatic()
+				&& (
+					$methodReflection->hasSideEffects()->yes()
+					|| $methodReflection->getName() === '__construct'
+				)
+				&& $scopeFunction instanceof MethodReflection
+				&& !$scopeFunction->isStatic()
+				&& $scope->isInClass()
+				&& (
+					$scope->getClassReflection()->getName() === $methodReflection->getDeclaringClass()->getName()
+					|| $scope->getClassReflection()->isSubclassOf($methodReflection->getDeclaringClass()->getName())
+				)
+			) {
+				$scope = $scope->invalidateExpression(new Variable('this'), true);
+			}
+
+			if (
+				$methodReflection !== null
+				&& !$methodReflection->isStatic()
+				&& $methodReflection->getName() === '__construct'
+				&& $scopeFunction instanceof MethodReflection
+				&& !$scopeFunction->isStatic()
+				&& $scope->isInClass()
+				&& $scope->getClassReflection()->isSubclassOf($methodReflection->getDeclaringClass()->getName())
+			) {
+				$thisType = $scope->getType(new Variable('this'));
+				$methodClassReflection = $methodReflection->getDeclaringClass();
+				foreach ($methodClassReflection->getNativeReflection()->getProperties(ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED) as $property) {
+					if (!$property->isPromoted() || $property->getDeclaringClass()->getName() !== $methodClassReflection->getName()) {
+						continue;
+					}
+
+					$scope = $scope->assignInitializedProperty($thisType, $property->getName());
+				}
+			}
+
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+		} elseif ($expr instanceof PropertyFetch) {
+			$scopeBeforeVar = $scope;
+			$result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $result->getScope();
+			if ($expr->name instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$scope = $result->getScope();
+				if ($this->phpVersion->supportsPropertyHooks()) {
+					$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+				}
+			} else {
+				$propertyName = $expr->name->toString();
+				$propertyHolderType = $scopeBeforeVar->getType($expr->var);
+				$propertyReflection = $scopeBeforeVar->getPropertyReflection($propertyHolderType, $propertyName);
+				if ($propertyReflection !== null && $this->phpVersion->supportsPropertyHooks()) {
+					$propertyDeclaringClass = $propertyReflection->getDeclaringClass();
+					if ($propertyDeclaringClass->hasNativeProperty($propertyName)) {
+						$nativeProperty = $propertyDeclaringClass->getNativeProperty($propertyName);
+						$throwPoints = array_merge($throwPoints, $this->getPropertyReadThrowPointsFromGetHook($scopeBeforeVar, $expr, $nativeProperty));
+					}
+				}
+			}
+		} elseif ($expr instanceof Expr\NullsafePropertyFetch) {
+			$nonNullabilityResult = $this->ensureShallowNonNullability($scope, $scope, $expr->var);
+			$exprResult = $this->processExprNode($stmt, new PropertyFetch($expr->var, $expr->name, array_merge($expr->getAttributes(), ['virtualNullsafePropertyFetch' => true])), $nonNullabilityResult->getScope(), $nodeCallback, $context);
+			$scope = $this->revertNonNullability($exprResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
+
+			return new ExpressionResult(
+				$scope,
+				$exprResult->hasYield(),
+				$exprResult->getThrowPoints(),
+				$exprResult->getImpurePoints(),
+				static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
+				static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
+			);
+		} elseif ($expr instanceof StaticPropertyFetch) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			if ($expr->class instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+				$scope = $result->getScope();
+			}
+			if ($expr->name instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$scope = $result->getScope();
+			}
+		} elseif ($expr instanceof Expr\Closure) {
+			$processClosureResult = $this->processClosureNode($stmt, $expr, $scope, $nodeCallback, $context, null);
+
+			return new ExpressionResult(
+				$processClosureResult->getScope(),
+				false,
+				[],
+				[],
+			);
+		} elseif ($expr instanceof Expr\ArrowFunction) {
+			$result = $this->processArrowFunctionNode($stmt, $expr, $scope, $nodeCallback, null);
+			return new ExpressionResult(
+				$result->getScope(),
+				$result->hasYield(),
+				[],
+				[],
+			);
+		} elseif ($expr instanceof ErrorSuppress) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context);
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Exit_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$kind = $expr->getAttribute('kind', Exit_::KIND_EXIT);
+			$identifier = $kind === Exit_::KIND_DIE ? 'die' : 'exit';
+			$impurePoints = [
+				new ImpurePoint($scope, $expr, $identifier, $identifier, true),
+			];
+			if ($expr->expr !== null) {
+				$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$scope = $result->getScope();
+			}
+		} elseif ($expr instanceof Node\Scalar\InterpolatedString) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($expr->parts as $part) {
+				if (!$part instanceof Expr) {
+					continue;
+				}
+				$result = $this->processExprNode($stmt, $part, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$scope = $result->getScope();
+			}
+		} elseif ($expr instanceof ArrayDimFetch) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			if ($expr->dim !== null) {
+				$result = $this->processExprNode($stmt, $expr->dim, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+				$scope = $result->getScope();
+			}
+
+			$result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Array_) {
+			$itemNodes = [];
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			foreach ($expr->items as $arrayItem) {
+				$itemNodes[] = new LiteralArrayItem($scope, $arrayItem);
+				$nodeCallback($arrayItem, $scope);
+				if ($arrayItem->key !== null) {
+					$keyResult = $this->processExprNode($stmt, $arrayItem->key, $scope, $nodeCallback, $context->enterDeep());
+					$hasYield = $hasYield || $keyResult->hasYield();
+					$throwPoints = array_merge($throwPoints, $keyResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
+					$scope = $keyResult->getScope();
+				}
+
+				$valueResult = $this->processExprNode($stmt, $arrayItem->value, $scope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $valueResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
+				$scope = $valueResult->getScope();
+			}
+			$nodeCallback(new LiteralArrayNode($expr, $itemNodes), $scope);
+		} elseif ($expr instanceof BooleanAnd || $expr instanceof BinaryOp\LogicalAnd) {
+			$leftResult = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
+			$rightResult = $this->processExprNode($stmt, $expr->right, $leftResult->getTruthyScope(), $nodeCallback, $context);
+			$rightExprType = $rightResult->getScope()->getType($expr->right);
+			if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
+				$leftMergedWithRightScope = $leftResult->getFalseyScope();
+			} else {
+				$leftMergedWithRightScope = $leftResult->getScope()->mergeWith($rightResult->getScope());
+			}
+
+			$this->callNodeCallbackWithExpression($nodeCallback, new BooleanAndNode($expr, $leftResult->getTruthyScope()), $scope, $context);
+
+			return new ExpressionResult(
+				$leftMergedWithRightScope,
+				$leftResult->hasYield() || $rightResult->hasYield(),
+				array_merge($leftResult->getThrowPoints(), $rightResult->getThrowPoints()),
+				array_merge($leftResult->getImpurePoints(), $rightResult->getImpurePoints()),
+				static fn (): MutatingScope => $rightResult->getScope()->filterByTruthyValue($expr),
+				static fn (): MutatingScope => $leftMergedWithRightScope->filterByFalseyValue($expr),
+			);
+		} elseif ($expr instanceof BooleanOr || $expr instanceof BinaryOp\LogicalOr) {
+			$leftResult = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
+			$rightResult = $this->processExprNode($stmt, $expr->right, $leftResult->getFalseyScope(), $nodeCallback, $context);
+			$rightExprType = $rightResult->getScope()->getType($expr->right);
+			if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
+				$leftMergedWithRightScope = $leftResult->getTruthyScope();
+			} else {
+				$leftMergedWithRightScope = $leftResult->getScope()->mergeWith($rightResult->getScope());
+			}
+
+			$this->callNodeCallbackWithExpression($nodeCallback, new BooleanOrNode($expr, $leftResult->getFalseyScope()), $scope, $context);
+
+			return new ExpressionResult(
+				$leftMergedWithRightScope,
+				$leftResult->hasYield() || $rightResult->hasYield(),
+				array_merge($leftResult->getThrowPoints(), $rightResult->getThrowPoints()),
+				array_merge($leftResult->getImpurePoints(), $rightResult->getImpurePoints()),
+				static fn (): MutatingScope => $leftMergedWithRightScope->filterByTruthyValue($expr),
+				static fn (): MutatingScope => $rightResult->getScope()->filterByFalseyValue($expr),
+			);
+		} elseif ($expr instanceof Coalesce) {
+			$nonNullabilityResult = $this->ensureNonNullability($scope, $expr->left);
+			$condScope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $expr->left);
+			$condResult = $this->processExprNode($stmt, $expr->left, $condScope, $nodeCallback, $context->enterDeep());
+			$scope = $this->revertNonNullability($condResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
+			$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $expr->left);
+
+			$rightScope = $scope->filterByFalseyValue($expr);
+			$rightResult = $this->processExprNode($stmt, $expr->right, $rightScope, $nodeCallback, $context->enterDeep());
+			$rightExprType = $scope->getType($expr->right);
+			if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
+				$scope = $scope->filterByTruthyValue(new Expr\Isset_([$expr->left]));
+			} else {
+				$scope = $scope->filterByTruthyValue(new Expr\Isset_([$expr->left]))->mergeWith($rightResult->getScope());
+			}
+
+			$hasYield = $condResult->hasYield() || $rightResult->hasYield();
+			$throwPoints = array_merge($condResult->getThrowPoints(), $rightResult->getThrowPoints());
+			$impurePoints = array_merge($condResult->getImpurePoints(), $rightResult->getImpurePoints());
+		} elseif ($expr instanceof BinaryOp) {
+			$result = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$result = $this->processExprNode($stmt, $expr->right, $scope, $nodeCallback, $context->enterDeep());
+			if (
+				($expr instanceof BinaryOp\Div || $expr instanceof BinaryOp\Mod) &&
+				!$scope->getType($expr->right)->toNumber()->isSuperTypeOf(new ConstantIntegerType(0))->no()
+			) {
+				$throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(DivisionByZeroError::class), $expr, false);
+			}
+			$scope = $result->getScope();
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+		} elseif ($expr instanceof Expr\Include_) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+			$impurePoints = $result->getImpurePoints();
+			$impurePoints[] = new ImpurePoint(
+				$scope,
+				$expr,
+				in_array($expr->type, [Expr\Include_::TYPE_INCLUDE, Expr\Include_::TYPE_INCLUDE_ONCE], true) ? 'include' : 'require',
+				in_array($expr->type, [Expr\Include_::TYPE_INCLUDE, Expr\Include_::TYPE_INCLUDE_ONCE], true) ? 'include' : 'require',
+				true,
+			);
+			$hasYield = $result->hasYield();
+			$scope = $result->getScope()->afterExtractCall();
+		} elseif ($expr instanceof Expr\Print_) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$impurePoints[] = new ImpurePoint($scope, $expr, 'print', 'print', true);
+			$hasYield = $result->hasYield();
+
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Cast\String_) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$hasYield = $result->hasYield();
+
+			$exprType = $scope->getType($expr->expr);
+			$toStringMethod = $scope->getMethodReflection($exprType, '__toString');
+			if ($toStringMethod !== null) {
+				if (!$toStringMethod->hasSideEffects()->no()) {
+					$impurePoints[] = new ImpurePoint(
+						$scope,
+						$expr,
+						'methodCall',
+						sprintf('call to method %s::%s()', $toStringMethod->getDeclaringClass()->getDisplayName(), $toStringMethod->getName()),
+						$toStringMethod->isPure()->no(),
+					);
+				}
+			}
+
+			$scope = $result->getScope();
+		} elseif (
+			$expr instanceof Expr\BitwiseNot
+			|| $expr instanceof Cast
+			|| $expr instanceof Expr\Clone_
+			|| $expr instanceof Expr\UnaryMinus
+			|| $expr instanceof Expr\UnaryPlus
+		) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$hasYield = $result->hasYield();
+
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Expr\Eval_) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+			$impurePoints = $result->getImpurePoints();
+			$impurePoints[] = new ImpurePoint($scope, $expr, 'eval', 'eval', true);
+			$hasYield = $result->hasYield();
+
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Expr\YieldFrom) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $result->getThrowPoints();
+			$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+			$impurePoints = $result->getImpurePoints();
+			$impurePoints[] = new ImpurePoint(
+				$scope,
+				$expr,
+				'yieldFrom',
+				'yield from',
+				true,
+			);
+			$hasYield = true;
+
+			$scope = $result->getScope();
+		} elseif ($expr instanceof BooleanNot) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+		} elseif ($expr instanceof Expr\ClassConstFetch) {
+			if ($expr->class instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $result->getScope();
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+			} else {
+				$hasYield = false;
+				$throwPoints = [];
+				$impurePoints = [];
+				$nodeCallback($expr->class, $scope);
+			}
+
+			if ($expr->name instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $result->getScope();
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			} else {
+				$nodeCallback($expr->name, $scope);
+			}
+		} elseif ($expr instanceof Expr\Empty_) {
+			$nonNullabilityResult = $this->ensureNonNullability($scope, $expr->expr);
+			$scope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $expr->expr);
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $this->revertNonNullability($scope, $nonNullabilityResult->getSpecifiedExpressions());
+			$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $expr->expr);
+		} elseif ($expr instanceof Expr\Isset_) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$nonNullabilityResults = [];
+			foreach ($expr->vars as $var) {
+				$nonNullabilityResult = $this->ensureNonNullability($scope, $var);
+				$scope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $var);
+				$result = $this->processExprNode($stmt, $var, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $result->getScope();
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+				$nonNullabilityResults[] = $nonNullabilityResult;
+			}
+			foreach (array_reverse($expr->vars) as $var) {
+				$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
+			}
+			foreach (array_reverse($nonNullabilityResults) as $nonNullabilityResult) {
+				$scope = $this->revertNonNullability($scope, $nonNullabilityResult->getSpecifiedExpressions());
+			}
+		} elseif ($expr instanceof Instanceof_) {
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			if ($expr->class instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $result->getScope();
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			}
+		} elseif ($expr instanceof List_) {
+			// only in assign and foreach, processed elsewhere
+			return new ExpressionResult($scope, false, [], []);
+		} elseif ($expr instanceof New_) {
+			$parametersAcceptor = null;
+			$constructorReflection = null;
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$className = null;
+			if ($expr->class instanceof Expr || $expr->class instanceof Name) {
+				if ($expr->class instanceof Expr) {
+					$objectClasses = $scope->getType($expr)->getObjectClassNames();
+					if (count($objectClasses) === 1) {
+						$objectExprResult = $this->processExprNode($stmt, new New_(new Name($objectClasses[0])), $scope, static function (): void {
+						}, $context->enterDeep());
+						$className = $objectClasses[0];
+						$additionalThrowPoints = $objectExprResult->getThrowPoints();
+					} else {
+						$additionalThrowPoints = [ThrowPoint::createImplicit($scope, $expr)];
+					}
+
+					$result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
+					$scope = $result->getScope();
+					$hasYield = $result->hasYield();
+					$throwPoints = $result->getThrowPoints();
+					$impurePoints = $result->getImpurePoints();
+					foreach ($additionalThrowPoints as $throwPoint) {
+						$throwPoints[] = $throwPoint;
+					}
+				} else {
+					$className = $scope->resolveName($expr->class);
+				}
+
+				$classReflection = null;
+				if ($className !== null && $this->reflectionProvider->hasClass($className)) {
+					$classReflection = $this->reflectionProvider->getClass($className);
+					if ($classReflection->hasConstructor()) {
+						$constructorReflection = $classReflection->getConstructor();
+						$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+							$scope,
+							$expr->getArgs(),
+							$constructorReflection->getVariants(),
+							$constructorReflection->getNamedArgumentsVariants(),
+						);
+						$constructorThrowPoint = $this->getConstructorThrowPoint($constructorReflection, $parametersAcceptor, $classReflection, $expr, new Name\FullyQualified($className), $expr->getArgs(), $scope);
+						if ($constructorThrowPoint !== null) {
+							$throwPoints[] = $constructorThrowPoint;
+						}
+					}
+				} else {
+					$throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
+				}
+
+				if ($constructorReflection !== null) {
+					if (!$constructorReflection->hasSideEffects()->no()) {
+						$certain = $constructorReflection->isPure()->no();
+						$impurePoints[] = new ImpurePoint(
+							$scope,
+							$expr,
+							'new',
+							sprintf('instantiation of class %s', $constructorReflection->getDeclaringClass()->getDisplayName()),
+							$certain,
+						);
+					}
+				} elseif ($classReflection === null) {
+					$impurePoints[] = new ImpurePoint(
+						$scope,
+						$expr,
+						'new',
+						'instantiation of unknown class',
+						false,
+					);
+				}
+
+				if ($parametersAcceptor !== null) {
+					$expr = ArgumentsNormalizer::reorderNewArguments($parametersAcceptor, $expr) ?? $expr;
+				}
+
+			} else {
+				$classReflection = $this->reflectionProvider->getAnonymousClassReflection($expr->class, $scope); // populates $expr->class->name
+				$constructorResult = null;
+				$this->processStmtNode($expr->class, $scope, static function (Node $node, Scope $scope) use ($nodeCallback, $classReflection, &$constructorResult): void {
+					$nodeCallback($node, $scope);
+					if (!$node instanceof MethodReturnStatementsNode) {
+						return;
+					}
+					if ($constructorResult !== null) {
+						return;
+					}
+					$currentClassReflection = $node->getClassReflection();
+					if ($currentClassReflection->getName() !== $classReflection->getName()) {
+						return;
+					}
+					if (!$currentClassReflection->hasConstructor()) {
+						return;
+					}
+					if ($currentClassReflection->getConstructor()->getName() !== $node->getMethodReflection()->getName()) {
+						return;
+					}
+					$constructorResult = $node;
+				}, StatementContext::createTopLevel());
+				if ($constructorResult !== null) {
+					$throwPoints = array_merge($throwPoints, $constructorResult->getStatementResult()->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $constructorResult->getImpurePoints());
+				}
+				if ($classReflection->hasConstructor()) {
+					$constructorReflection = $classReflection->getConstructor();
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+						$scope,
+						$expr->getArgs(),
+						$constructorReflection->getVariants(),
+						$constructorReflection->getNamedArgumentsVariants(),
+					);
+				}
+			}
+
+			$result = $this->processArgs($stmt, $constructorReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context);
+			$scope = $result->getScope();
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+		} elseif (
+			$expr instanceof Expr\PreInc
+			|| $expr instanceof Expr\PostInc
+			|| $expr instanceof Expr\PreDec
+			|| $expr instanceof Expr\PostDec
+		) {
+			$result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+
+			$newExpr = $expr;
+			if ($expr instanceof Expr\PostInc) {
+				$newExpr = new Expr\PreInc($expr->var);
+			} elseif ($expr instanceof Expr\PostDec) {
+				$newExpr = new Expr\PreDec($expr->var);
+			}
+
+			$scope = $this->processAssignVar(
+				$scope,
+				$stmt,
+				$expr->var,
+				$newExpr,
+				static function (Node $node, Scope $scope) use ($nodeCallback): void {
+					if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
+						return;
+					}
+
+					$nodeCallback($node, $scope);
+				},
+				$context,
+				static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+				false,
+			)->getScope();
+		} elseif ($expr instanceof Ternary) {
+			$ternaryCondResult = $this->processExprNode($stmt, $expr->cond, $scope, $nodeCallback, $context->enterDeep());
+			$throwPoints = $ternaryCondResult->getThrowPoints();
+			$impurePoints = $ternaryCondResult->getImpurePoints();
+			$ifTrueScope = $ternaryCondResult->getTruthyScope();
+			$ifFalseScope = $ternaryCondResult->getFalseyScope();
+			$ifTrueType = null;
+			if ($expr->if !== null) {
+				$ifResult = $this->processExprNode($stmt, $expr->if, $ifTrueScope, $nodeCallback, $context);
+				$throwPoints = array_merge($throwPoints, $ifResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $ifResult->getImpurePoints());
+				$ifTrueScope = $ifResult->getScope();
+				$ifTrueType = $ifTrueScope->getType($expr->if);
+			}
+
+			$elseResult = $this->processExprNode($stmt, $expr->else, $ifFalseScope, $nodeCallback, $context);
+			$throwPoints = array_merge($throwPoints, $elseResult->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $elseResult->getImpurePoints());
+			$ifFalseScope = $elseResult->getScope();
+
+			$condType = $scope->getType($expr->cond);
+			if ($condType->isTrue()->yes()) {
+				$finalScope = $ifTrueScope;
+			} elseif ($condType->isFalse()->yes()) {
+				$finalScope = $ifFalseScope;
+			} else {
+				if ($ifTrueType instanceof NeverType && $ifTrueType->isExplicit()) {
+					$finalScope = $ifFalseScope;
+				} else {
+					$ifFalseType = $ifFalseScope->getType($expr->else);
+
+					if ($ifFalseType instanceof NeverType && $ifFalseType->isExplicit()) {
+						$finalScope = $ifTrueScope;
+					} else {
+						$finalScope = $ifTrueScope->mergeWith($ifFalseScope);
+					}
+				}
+			}
+
+			return new ExpressionResult(
+				$finalScope,
+				$ternaryCondResult->hasYield(),
+				$throwPoints,
+				$impurePoints,
+				static fn (): MutatingScope => $finalScope->filterByTruthyValue($expr),
+				static fn (): MutatingScope => $finalScope->filterByFalseyValue($expr),
+			);
+
+		} elseif ($expr instanceof Expr\Yield_) {
+			$throwPoints = [
+				ThrowPoint::createImplicit($scope, $expr),
+			];
+			$impurePoints = [
+				new ImpurePoint(
+					$scope,
+					$expr,
+					'yield',
+					'yield',
+					true,
+				),
+			];
+			if ($expr->key !== null) {
+				$keyResult = $this->processExprNode($stmt, $expr->key, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $keyResult->getScope();
+				$throwPoints = $keyResult->getThrowPoints();
+				$impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
+			}
+			if ($expr->value !== null) {
+				$valueResult = $this->processExprNode($stmt, $expr->value, $scope, $nodeCallback, $context->enterDeep());
+				$scope = $valueResult->getScope();
+				$throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
+			}
+			$hasYield = true;
+		} elseif ($expr instanceof Expr\Match_) {
+			$deepContext = $context->enterDeep();
+			$condType = $scope->getType($expr->cond);
+			$condResult = $this->processExprNode($stmt, $expr->cond, $scope, $nodeCallback, $deepContext);
+			$scope = $condResult->getScope();
+			$hasYield = $condResult->hasYield();
+			$throwPoints = $condResult->getThrowPoints();
+			$impurePoints = $condResult->getImpurePoints();
+			$matchScope = $scope->enterMatch($expr);
+			$armNodes = [];
+			$hasDefaultCond = false;
+			$hasAlwaysTrueCond = false;
+			$arms = $expr->arms;
+			if ($condType->isEnum()->yes()) {
+				// enum match analysis would work even without this if branch
+				// but would be much slower
+				// this avoids using ObjectType::$subtractedType which is slow for huge enums
+				// because of repeated union type normalization
+				$enumCases = $condType->getEnumCases();
+				if (count($enumCases) > 0) {
+					$indexedEnumCases = [];
+					foreach ($enumCases as $enumCase) {
+						$indexedEnumCases[strtolower($enumCase->getClassName())][$enumCase->getEnumCaseName()] = $enumCase;
+					}
+					$unusedIndexedEnumCases = $indexedEnumCases;
+					foreach ($arms as $i => $arm) {
+						if ($arm->conds === null) {
+							continue;
+						}
+
+						$condNodes = [];
+						$conditionCases = [];
+						foreach ($arm->conds as $cond) {
+							if (!$cond instanceof Expr\ClassConstFetch) {
+								continue 2;
+							}
+							if (!$cond->class instanceof Name) {
+								continue 2;
+							}
+							if (!$cond->name instanceof Node\Identifier) {
+								continue 2;
+							}
+							$fetchedClassName = $scope->resolveName($cond->class);
+							$loweredFetchedClassName = strtolower($fetchedClassName);
+							if (!array_key_exists($loweredFetchedClassName, $indexedEnumCases)) {
+								continue 2;
+							}
+
+							if (!array_key_exists($loweredFetchedClassName, $unusedIndexedEnumCases)) {
+								throw new ShouldNotHappenException();
+							}
+
+							$caseName = $cond->name->toString();
+							if (!array_key_exists($caseName, $indexedEnumCases[$loweredFetchedClassName])) {
+								continue 2;
+							}
+
+							$enumCase = $indexedEnumCases[$loweredFetchedClassName][$caseName];
+							$conditionCases[] = $enumCase;
+							$armConditionScope = $matchScope;
+							if (!array_key_exists($caseName, $unusedIndexedEnumCases[$loweredFetchedClassName])) {
+								// force "always false"
+								$armConditionScope = $armConditionScope->removeTypeFromExpression(
+									$expr->cond,
+									$enumCase,
+								);
+							} else {
+								$unusedCasesCount = 0;
+								foreach ($unusedIndexedEnumCases as $cases) {
+									$unusedCasesCount += count($cases);
+								}
+								if ($unusedCasesCount === 1) {
+									$hasAlwaysTrueCond = true;
+
+									// force "always true"
+									$armConditionScope = $armConditionScope->addTypeToExpression(
+										$expr->cond,
+										$enumCase,
+									);
+								}
+							}
+
+							$this->processExprNode($stmt, $cond, $armConditionScope, $nodeCallback, $deepContext);
+
+							$condNodes[] = new MatchExpressionArmCondition(
+								$cond,
+								$armConditionScope,
+								$cond->getStartLine(),
+							);
+
+							unset($unusedIndexedEnumCases[$loweredFetchedClassName][$caseName]);
+						}
+
+						$conditionCasesCount = count($conditionCases);
+						if ($conditionCasesCount === 0) {
+							throw new ShouldNotHappenException();
+						} elseif ($conditionCasesCount === 1) {
+							$conditionCaseType = $conditionCases[0];
+						} else {
+							$conditionCaseType = new UnionType($conditionCases);
+						}
+
+						$matchArmBodyScope = $matchScope->addTypeToExpression(
+							$expr->cond,
+							$conditionCaseType,
+						);
+						$matchArmBody = new MatchExpressionArmBody($matchArmBodyScope, $arm->body);
+						$armNodes[$i] = new MatchExpressionArm($matchArmBody, $condNodes, $arm->getStartLine());
+
+						$armResult = $this->processExprNode(
+							$stmt,
+							$arm->body,
+							$matchArmBodyScope,
+							$nodeCallback,
+							ExpressionContext::createTopLevel(),
+						);
+						$armScope = $armResult->getScope();
+						$scope = $scope->mergeWith($armScope);
+						$hasYield = $hasYield || $armResult->hasYield();
+						$throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
+						$impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
+
+						unset($arms[$i]);
+					}
+
+					$remainingCases = [];
+					foreach ($unusedIndexedEnumCases as $cases) {
+						foreach ($cases as $case) {
+							$remainingCases[] = $case;
+						}
+					}
+
+					$remainingCasesCount = count($remainingCases);
+					if ($remainingCasesCount === 0) {
+						$remainingType = new NeverType();
+					} elseif ($remainingCasesCount === 1) {
+						$remainingType = $remainingCases[0];
+					} else {
+						$remainingType = new UnionType($remainingCases);
+					}
+
+					$matchScope = $matchScope->addTypeToExpression($expr->cond, $remainingType);
+				}
+			}
+			foreach ($arms as $i => $arm) {
+				if ($arm->conds === null) {
+					$hasDefaultCond = true;
+					$matchArmBody = new MatchExpressionArmBody($matchScope, $arm->body);
+					$armNodes[$i] = new MatchExpressionArm($matchArmBody, [], $arm->getStartLine());
+					$armResult = $this->processExprNode($stmt, $arm->body, $matchScope, $nodeCallback, ExpressionContext::createTopLevel());
+					$matchScope = $armResult->getScope();
+					$hasYield = $hasYield || $armResult->hasYield();
+					$throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
+					$scope = $scope->mergeWith($matchScope);
+					continue;
+				}
+
+				if (count($arm->conds) === 0) {
+					throw new ShouldNotHappenException();
+				}
+
+				$filteringExprs = [];
+				$armCondScope = $matchScope;
+				$condNodes = [];
+				foreach ($arm->conds as $armCond) {
+					$condNodes[] = new MatchExpressionArmCondition($armCond, $armCondScope, $armCond->getStartLine());
+					$armCondResult = $this->processExprNode($stmt, $armCond, $armCondScope, $nodeCallback, $deepContext);
+					$hasYield = $hasYield || $armCondResult->hasYield();
+					$throwPoints = array_merge($throwPoints, $armCondResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $armCondResult->getImpurePoints());
+					$armCondExpr = new BinaryOp\Identical($expr->cond, $armCond);
+					$armCondResultScope = $armCondResult->getScope();
+					$armCondType = $this->treatPhpDocTypesAsCertain ? $armCondResultScope->getType($armCondExpr) : $armCondResultScope->getNativeType($armCondExpr);
+					if ($armCondType->isTrue()->yes()) {
+						$hasAlwaysTrueCond = true;
+					}
+					$armCondScope = $armCondResult->getScope()->filterByFalseyValue($armCondExpr);
+					$filteringExprs[] = $armCond;
+				}
+
+				if (count($filteringExprs) === 1) {
+					$filteringExpr = new BinaryOp\Identical($expr->cond, $filteringExprs[0]);
+				} else {
+					$items = [];
+					foreach ($filteringExprs as $filteringExpr) {
+						$items[] = new Node\ArrayItem($filteringExpr);
+					}
+					$filteringExpr = new FuncCall(
+						new Name\FullyQualified('in_array'),
+						[
+							new Arg($expr->cond),
+							new Arg(new Array_($items)),
+							new Arg(new ConstFetch(new Name\FullyQualified('true'))),
+						],
+					);
+				}
+
+				$bodyScope = $this->processExprNode($stmt, $filteringExpr, $matchScope, static function (): void {
+				}, $deepContext)->getTruthyScope();
+				$matchArmBody = new MatchExpressionArmBody($bodyScope, $arm->body);
+				$armNodes[$i] = new MatchExpressionArm($matchArmBody, $condNodes, $arm->getStartLine());
+
+				$armResult = $this->processExprNode(
+					$stmt,
+					$arm->body,
+					$bodyScope,
+					$nodeCallback,
+					ExpressionContext::createTopLevel(),
+				);
+				$armScope = $armResult->getScope();
+				$scope = $scope->mergeWith($armScope);
+				$hasYield = $hasYield || $armResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
+				$matchScope = $matchScope->filterByFalseyValue($filteringExpr);
+			}
+
+			$remainingType = $matchScope->getType($expr->cond);
+			if (!$hasDefaultCond && !$hasAlwaysTrueCond && !$remainingType instanceof NeverType) {
+				$throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(UnhandledMatchError::class), $expr, false);
+			}
+
+			ksort($armNodes, SORT_NUMERIC);
+
+			$nodeCallback(new MatchExpressionNode($expr->cond, array_values($armNodes), $expr, $matchScope), $scope);
+		} elseif ($expr instanceof AlwaysRememberedExpr) {
+			$result = $this->processExprNode($stmt, $expr->getExpr(), $scope, $nodeCallback, $context);
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $result->getScope();
+		} elseif ($expr instanceof Expr\Throw_) {
+			$hasYield = false;
+			$result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$throwPoints[] = ThrowPoint::createExplicit($scope, $scope->getType($expr->expr), $expr, false);
+		} elseif ($expr instanceof FunctionCallableNode) {
+			$throwPoints = [];
+			$impurePoints = [];
+			$hasYield = false;
+			if ($expr->getName() instanceof Expr) {
+				$result = $this->processExprNode($stmt, $expr->getName(), $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $result->getScope();
+				$hasYield = $result->hasYield();
+				$throwPoints = $result->getThrowPoints();
+				$impurePoints = $result->getImpurePoints();
+			}
+		} elseif ($expr instanceof MethodCallableNode) {
+			$result = $this->processExprNode($stmt, $expr->getVar(), $scope, $nodeCallback, ExpressionContext::createDeep());
+			$scope = $result->getScope();
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			if ($expr->getName() instanceof Expr) {
+				$nameResult = $this->processExprNode($stmt, $expr->getVar(), $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $nameResult->getScope();
+				$hasYield = $hasYield || $nameResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $nameResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $nameResult->getImpurePoints());
+			}
+		} elseif ($expr instanceof StaticMethodCallableNode) {
+			$throwPoints = [];
+			$impurePoints = [];
+			$hasYield = false;
+			if ($expr->getClass() instanceof Expr) {
+				$classResult = $this->processExprNode($stmt, $expr->getClass(), $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $classResult->getScope();
+				$hasYield = $classResult->hasYield();
+				$throwPoints = $classResult->getThrowPoints();
+				$impurePoints = $classResult->getImpurePoints();
+			}
+			if ($expr->getName() instanceof Expr) {
+				$nameResult = $this->processExprNode($stmt, $expr->getName(), $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $nameResult->getScope();
+				$hasYield = $hasYield || $nameResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $nameResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $nameResult->getImpurePoints());
+			}
+		} elseif ($expr instanceof InstantiationCallableNode) {
+			$throwPoints = [];
+			$impurePoints = [];
+			$hasYield = false;
+			if ($expr->getClass() instanceof Expr) {
+				$classResult = $this->processExprNode($stmt, $expr->getClass(), $scope, $nodeCallback, ExpressionContext::createDeep());
+				$scope = $classResult->getScope();
+				$hasYield = $classResult->hasYield();
+				$throwPoints = $classResult->getThrowPoints();
+				$impurePoints = $classResult->getImpurePoints();
+			}
+		} elseif ($expr instanceof Node\Scalar) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+		} elseif ($expr instanceof ConstFetch) {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+			$nodeCallback($expr->name, $scope);
+		} else {
+			$hasYield = false;
+			$throwPoints = [];
+			$impurePoints = [];
+		}
+
+		return new ExpressionResult(
+			$scope,
+			$hasYield,
+			$throwPoints,
+			$impurePoints,
+			static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
+			static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
+		);
+	}
+
+	private function getArrayFunctionAppendingType(FunctionReflection $functionReflection, Scope $scope, FuncCall $expr): Type
+	{
+		$arrayArg = $expr->getArgs()[0]->value;
+		$arrayType = $scope->getType($arrayArg);
+		$callArgs = array_slice($expr->getArgs(), 1);
+
+		/**
+		 * @param Arg[] $callArgs
+		 * @param callable(?Type, Type, bool): void $setOffsetValueType
+		 */
+		$setOffsetValueTypes = static function (Scope $scope, array $callArgs, callable $setOffsetValueType, ?bool &$nonConstantArrayWasUnpacked = null): void {
+			foreach ($callArgs as $callArg) {
+				$callArgType = $scope->getType($callArg->value);
+				if ($callArg->unpack) {
+					$constantArrays = $callArgType->getConstantArrays();
+					if (count($constantArrays) === 1) {
+						$iterableValueTypes = $constantArrays[0]->getValueTypes();
+					} else {
+						$iterableValueTypes = [$callArgType->getIterableValueType()];
+						$nonConstantArrayWasUnpacked = true;
+					}
+
+					$isOptional = !$callArgType->isIterableAtLeastOnce()->yes();
+					foreach ($iterableValueTypes as $iterableValueType) {
+						if ($iterableValueType instanceof UnionType) {
+							foreach ($iterableValueType->getTypes() as $innerType) {
+								$setOffsetValueType(null, $innerType, $isOptional);
+							}
+						} else {
+							$setOffsetValueType(null, $iterableValueType, $isOptional);
+						}
+					}
+					continue;
+				}
+				$setOffsetValueType(null, $callArgType, false);
+			}
+		};
+
+		$constantArrays = $arrayType->getConstantArrays();
+		if (count($constantArrays) > 0) {
+			$newArrayTypes = [];
+			$prepend = $functionReflection->getName() === 'array_unshift';
+			foreach ($constantArrays as $constantArray) {
+				$arrayTypeBuilder = $prepend ? ConstantArrayTypeBuilder::createEmpty() : ConstantArrayTypeBuilder::createFromConstantArray($constantArray);
+
+				$setOffsetValueTypes(
+					$scope,
+					$callArgs,
+					static function (?Type $offsetType, Type $valueType, bool $optional) use (&$arrayTypeBuilder): void {
+						$arrayTypeBuilder->setOffsetValueType($offsetType, $valueType, $optional);
+					},
+					$nonConstantArrayWasUnpacked,
+				);
+
+				if ($prepend) {
+					$keyTypes = $constantArray->getKeyTypes();
+					$valueTypes = $constantArray->getValueTypes();
+					foreach ($keyTypes as $k => $keyType) {
+						$arrayTypeBuilder->setOffsetValueType(
+							count($keyType->getConstantStrings()) === 1 ? $keyType->getConstantStrings()[0] : null,
+							$valueTypes[$k],
+							$constantArray->isOptionalKey($k),
+						);
+					}
+				}
+
+				$constantArray = $arrayTypeBuilder->getArray();
+
+				if ($constantArray->isConstantArray()->yes() && $nonConstantArrayWasUnpacked) {
+					$array = new ArrayType($constantArray->generalize(GeneralizePrecision::lessSpecific())->getIterableKeyType(), $constantArray->getIterableValueType());
+					$isList = $constantArray->isList()->yes();
+					$constantArray = $constantArray->isIterableAtLeastOnce()->yes()
+						? TypeCombinator::intersect($array, new NonEmptyArrayType())
+						: $array;
+					$constantArray = $isList
+						? TypeCombinator::intersect($constantArray, new AccessoryArrayListType())
+						: $constantArray;
+				}
+
+				$newArrayTypes[] = $constantArray;
+			}
+
+			return TypeCombinator::union(...$newArrayTypes);
+		}
+
+		$setOffsetValueTypes(
+			$scope,
+			$callArgs,
+			static function (?Type $offsetType, Type $valueType, bool $optional) use (&$arrayType): void {
+				$isIterableAtLeastOnce = $arrayType->isIterableAtLeastOnce()->yes() || !$optional;
+				$arrayType = $arrayType->setOffsetValueType($offsetType, $valueType);
+				if ($isIterableAtLeastOnce) {
+					return;
+				}
+
+				$arrayType = TypeCombinator::union($arrayType, new ConstantArrayType([], []));
+			},
+		);
+
+		return $arrayType;
+	}
+
+	private function getArraySortPreserveListFunctionType(Type $type): Type
+	{
+		$isIterableAtLeastOnce = $type->isIterableAtLeastOnce();
+		if ($isIterableAtLeastOnce->no()) {
+			return $type;
+		}
+
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($isIterableAtLeastOnce): Type {
+			if ($type instanceof UnionType || $type instanceof IntersectionType) {
+				return $traverse($type);
+			}
+
+			if (!$type instanceof ArrayType && !$type instanceof ConstantArrayType) {
+				return $type;
+			}
+
+			$newArrayType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $type->getIterableValueType()), new AccessoryArrayListType());
+			if ($isIterableAtLeastOnce->yes()) {
+				$newArrayType = TypeCombinator::intersect($newArrayType, new NonEmptyArrayType());
+			}
+
+			return $newArrayType;
+		});
+	}
+
+	private function getArraySortDoNotPreserveListFunctionType(Type $type): Type
+	{
+		$isIterableAtLeastOnce = $type->isIterableAtLeastOnce();
+		if ($isIterableAtLeastOnce->no()) {
+			return $type;
+		}
+
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($isIterableAtLeastOnce): Type {
+			if ($type instanceof UnionType) {
+				return $traverse($type);
+			}
+
+			$constantArrays = $type->getConstantArrays();
+			if (count($constantArrays) > 0) {
+				$types = [];
+				foreach ($constantArrays as $constantArray) {
+					$types[] = new ConstantArrayType(
+						$constantArray->getKeyTypes(),
+						$constantArray->getValueTypes(),
+						$constantArray->getNextAutoIndexes(),
+						$constantArray->getOptionalKeys(),
+						$constantArray->isList()->and(TrinaryLogic::createMaybe()),
+					);
+				}
+
+				return TypeCombinator::union(...$types);
+			}
+
+			$newArrayType = new ArrayType($type->getIterableKeyType(), $type->getIterableValueType());
+			if ($isIterableAtLeastOnce->yes()) {
+				$newArrayType = TypeCombinator::intersect($newArrayType, new NonEmptyArrayType());
+			}
+
+			return $newArrayType;
+		});
+	}
+
+	private function getFunctionThrowPoint(
+		FunctionReflection $functionReflection,
+		?ParametersAcceptor $parametersAcceptor,
+		FuncCall $funcCall,
+		MutatingScope $scope,
+	): ?ThrowPoint
+	{
+		$normalizedFuncCall = $funcCall;
+		if ($parametersAcceptor !== null) {
+			$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $funcCall);
+		}
+
+		if ($normalizedFuncCall !== null) {
+			foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicFunctionThrowTypeExtensions() as $extension) {
+				if (!$extension->isFunctionSupported($functionReflection)) {
+					continue;
+				}
+
+				$throwType = $extension->getThrowTypeFromFunctionCall($functionReflection, $normalizedFuncCall, $scope);
+				if ($throwType === null) {
+					return null;
+				}
+
+				return ThrowPoint::createExplicit($scope, $throwType, $funcCall, false);
+			}
+		}
+
+		$throwType = $functionReflection->getThrowType();
+		if ($throwType === null && $parametersAcceptor !== null) {
+			$returnType = $parametersAcceptor->getReturnType();
+			if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+				$throwType = new ObjectType(Throwable::class);
+			}
+		}
+
+		if ($throwType !== null) {
+			if (!$throwType->isVoid()->yes()) {
+				return ThrowPoint::createExplicit($scope, $throwType, $funcCall, true);
+			}
+		} elseif ($this->implicitThrows) {
+			$requiredParameters = null;
+			if ($parametersAcceptor !== null) {
+				$requiredParameters = 0;
+				foreach ($parametersAcceptor->getParameters() as $parameter) {
+					if ($parameter->isOptional()) {
+						continue;
+					}
+
+					$requiredParameters++;
+				}
+			}
+			if (
+				!$functionReflection->isBuiltin()
+				|| $requiredParameters === null
+				|| $requiredParameters > 0
+				|| count($funcCall->getArgs()) > 0
+			) {
+				$functionReturnedType = $scope->getType($funcCall);
+				if (!(new ObjectType(Throwable::class))->isSuperTypeOf($functionReturnedType)->yes()) {
+					return ThrowPoint::createImplicit($scope, $funcCall);
+				}
+			}
+		}
+
+		return null;
+	}
+
+	private function getMethodThrowPoint(MethodReflection $methodReflection, ParametersAcceptor $parametersAcceptor, MethodCall $methodCall, MutatingScope $scope): ?ThrowPoint
+	{
+		$normalizedMethodCall = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $methodCall);
+		if ($normalizedMethodCall !== null) {
+			foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicMethodThrowTypeExtensions() as $extension) {
+				if (!$extension->isMethodSupported($methodReflection)) {
+					continue;
+				}
+
+				$throwType = $extension->getThrowTypeFromMethodCall($methodReflection, $normalizedMethodCall, $scope);
+				if ($throwType === null) {
+					return null;
+				}
+
+				return ThrowPoint::createExplicit($scope, $throwType, $methodCall, false);
+			}
+		}
+
+		$throwType = $methodReflection->getThrowType();
+		if ($throwType === null) {
+			$returnType = $parametersAcceptor->getReturnType();
+			if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+				$throwType = new ObjectType(Throwable::class);
+			}
+		}
+
+		if ($throwType !== null) {
+			if (!$throwType->isVoid()->yes()) {
+				return ThrowPoint::createExplicit($scope, $throwType, $methodCall, true);
+			}
+		} elseif ($this->implicitThrows) {
+			$methodReturnedType = $scope->getType($methodCall);
+			if (!(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
+				return ThrowPoint::createImplicit($scope, $methodCall);
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 */
+	private function getConstructorThrowPoint(MethodReflection $constructorReflection, ParametersAcceptor $parametersAcceptor, ClassReflection $classReflection, New_ $new, Name $className, array $args, MutatingScope $scope): ?ThrowPoint
+	{
+		$methodCall = new StaticCall($className, $constructorReflection->getName(), $args);
+		$normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
+		if ($normalizedMethodCall !== null) {
+			foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicStaticMethodThrowTypeExtensions() as $extension) {
+				if (!$extension->isStaticMethodSupported($constructorReflection)) {
+					continue;
+				}
+
+				$throwType = $extension->getThrowTypeFromStaticMethodCall($constructorReflection, $normalizedMethodCall, $scope);
+				if ($throwType === null) {
+					return null;
+				}
+
+				return ThrowPoint::createExplicit($scope, $throwType, $new, false);
+			}
+		}
+
+		if ($constructorReflection->getThrowType() !== null) {
+			$throwType = $constructorReflection->getThrowType();
+			if (!$throwType->isVoid()->yes()) {
+				return ThrowPoint::createExplicit($scope, $throwType, $new, true);
+			}
+		} elseif ($this->implicitThrows) {
+			if ($classReflection->getName() !== Throwable::class && !$classReflection->isSubclassOf(Throwable::class)) {
+				return ThrowPoint::createImplicit($scope, $methodCall);
+			}
+		}
+
+		return null;
+	}
+
+	private function getStaticMethodThrowPoint(MethodReflection $methodReflection, ParametersAcceptor $parametersAcceptor, StaticCall $methodCall, MutatingScope $scope): ?ThrowPoint
+	{
+		$normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
+		if ($normalizedMethodCall !== null) {
+			foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicStaticMethodThrowTypeExtensions() as $extension) {
+				if (!$extension->isStaticMethodSupported($methodReflection)) {
+					continue;
+				}
+
+				$throwType = $extension->getThrowTypeFromStaticMethodCall($methodReflection, $normalizedMethodCall, $scope);
+				if ($throwType === null) {
+					return null;
+				}
+
+				return ThrowPoint::createExplicit($scope, $throwType, $methodCall, false);
+			}
+		}
+
+		if ($methodReflection->getThrowType() !== null) {
+			$throwType = $methodReflection->getThrowType();
+			if (!$throwType->isVoid()->yes()) {
+				return ThrowPoint::createExplicit($scope, $throwType, $methodCall, true);
+			}
+		} elseif ($this->implicitThrows) {
+			$methodReturnedType = $scope->getType($methodCall);
+			if (!(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
+				return ThrowPoint::createImplicit($scope, $methodCall);
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return ThrowPoint[]
+	 */
+	private function getPropertyReadThrowPointsFromGetHook(
+		MutatingScope $scope,
+		PropertyFetch $propertyFetch,
+		PhpPropertyReflection $propertyReflection,
+	): array
+	{
+		return $this->getThrowPointsFromPropertyHook($scope, $propertyFetch, $propertyReflection, 'get');
+	}
+
+	/**
+	 * @return ThrowPoint[]
+	 */
+	private function getPropertyAssignThrowPointsFromSetHook(
+		MutatingScope $scope,
+		PropertyFetch $propertyFetch,
+		PhpPropertyReflection $propertyReflection,
+	): array
+	{
+		return $this->getThrowPointsFromPropertyHook($scope, $propertyFetch, $propertyReflection, 'set');
+	}
+
+	/**
+	 * @param 'get'|'set' $hookName
+	 * @return ThrowPoint[]
+	 */
+	private function getThrowPointsFromPropertyHook(
+		MutatingScope $scope,
+		PropertyFetch $propertyFetch,
+		PhpPropertyReflection $propertyReflection,
+		string $hookName,
+	): array
+	{
+		$scopeFunction = $scope->getFunction();
+		if (
+			$scopeFunction instanceof PhpMethodFromParserNodeReflection
+			&& $scopeFunction->isPropertyHook()
+			&& $propertyFetch->var instanceof Variable
+			&& $propertyFetch->var->name === 'this'
+			&& $propertyFetch->name instanceof Identifier
+			&& $propertyFetch->name->toString() === $scopeFunction->getHookedPropertyName()
+		) {
+			return [];
+		}
+		$declaringClass = $propertyReflection->getDeclaringClass();
+		if (!$propertyReflection->hasHook($hookName)) {
+			if (
+				$propertyReflection->isPrivate()
+				|| $propertyReflection->isFinal()->yes()
+				|| $declaringClass->isFinal()
+			) {
+				return [];
+			}
+
+			if ($this->implicitThrows) {
+				return [ThrowPoint::createImplicit($scope, $propertyFetch)];
+			}
+
+			return [];
+		}
+
+		$getHook = $propertyReflection->getHook($hookName);
+		$throwType = $getHook->getThrowType();
+
+		if ($throwType !== null) {
+			if (!$throwType->isVoid()->yes()) {
+				return [ThrowPoint::createExplicit($scope, $throwType, $propertyFetch, true)];
+			}
+		} elseif ($this->implicitThrows) {
+			return [ThrowPoint::createImplicit($scope, $propertyFetch)];
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function getAssignedVariables(Expr $expr): array
+	{
+		if ($expr instanceof Expr\Variable) {
+			if (is_string($expr->name)) {
+				return [$expr->name];
+			}
+
+			return [];
+		}
+
+		if ($expr instanceof Expr\List_) {
+			$names = [];
+			foreach ($expr->items as $item) {
+				if ($item === null) {
+					continue;
+				}
+
+				$names = array_merge($names, $this->getAssignedVariables($item->value));
+			}
+
+			return $names;
+		}
+
+		if ($expr instanceof ArrayDimFetch) {
+			return $this->getAssignedVariables($expr->var);
+		}
+
+		return [];
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function callNodeCallbackWithExpression(
+		callable $nodeCallback,
+		Expr $expr,
+		MutatingScope $scope,
+		ExpressionContext $context,
+	): void
+	{
+		if ($context->isDeep()) {
+			$scope = $scope->exitFirstLevelStatements();
+		}
+		$nodeCallback($expr, $scope);
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processClosureNode(
+		Node\Stmt $stmt,
+		Expr\Closure $expr,
+		MutatingScope $scope,
+		callable $nodeCallback,
+		ExpressionContext $context,
+		?Type $passedToType,
+	): ProcessClosureResult
+	{
+		foreach ($expr->params as $param) {
+			$this->processParamNode($stmt, $param, $scope, $nodeCallback);
+		}
+
+		$byRefUses = [];
+
+		$closureCallArgs = $expr->getAttribute(ClosureArgVisitor::ATTRIBUTE_NAME);
+		$callableParameters = $this->createCallableParameters(
+			$scope,
+			$expr,
+			$closureCallArgs,
+			$passedToType,
+		);
+
+		$useScope = $scope;
+		foreach ($expr->uses as $use) {
+			if ($use->byRef) {
+				$byRefUses[] = $use;
+				$useScope = $useScope->enterExpressionAssign($use->var);
+
+				$inAssignRightSideVariableName = $context->getInAssignRightSideVariableName();
+				$inAssignRightSideType = $context->getInAssignRightSideType();
+				$inAssignRightSideNativeType = $context->getInAssignRightSideNativeType();
+				if (
+					$inAssignRightSideVariableName === $use->var->name
+					&& $inAssignRightSideType !== null
+					&& $inAssignRightSideNativeType !== null
+				) {
+					if ($inAssignRightSideType instanceof ClosureType) {
+						$variableType = $inAssignRightSideType;
+					} else {
+						$alreadyHasVariableType = $scope->hasVariableType($inAssignRightSideVariableName);
+						if ($alreadyHasVariableType->no()) {
+							$variableType = TypeCombinator::union(new NullType(), $inAssignRightSideType);
+						} else {
+							$variableType = TypeCombinator::union($scope->getVariableType($inAssignRightSideVariableName), $inAssignRightSideType);
+						}
+					}
+					if ($inAssignRightSideNativeType instanceof ClosureType) {
+						$variableNativeType = $inAssignRightSideNativeType;
+					} else {
+						$alreadyHasVariableType = $scope->hasVariableType($inAssignRightSideVariableName);
+						if ($alreadyHasVariableType->no()) {
+							$variableNativeType = TypeCombinator::union(new NullType(), $inAssignRightSideNativeType);
+						} else {
+							$variableNativeType = TypeCombinator::union($scope->getVariableType($inAssignRightSideVariableName), $inAssignRightSideNativeType);
+						}
+					}
+					$scope = $scope->assignVariable($inAssignRightSideVariableName, $variableType, $variableNativeType, TrinaryLogic::createYes());
+				}
+			}
+			$this->processExprNode($stmt, $use->var, $useScope, $nodeCallback, $context);
+			if (!$use->byRef) {
+				continue;
+			}
+
+			$useScope = $useScope->exitExpressionAssign($use->var);
+		}
+
+		if ($expr->returnType !== null) {
+			$nodeCallback($expr->returnType, $scope);
+		}
+
+		$closureScope = $scope->enterAnonymousFunction($expr, $callableParameters);
+		$closureScope = $closureScope->processClosureScope($scope, null, $byRefUses);
+		$closureType = $closureScope->getAnonymousFunctionReflection();
+		if (!$closureType instanceof ClosureType) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nodeCallback(new InClosureNode($closureType, $expr), $closureScope);
+
+		$executionEnds = [];
+		$gatheredReturnStatements = [];
+		$gatheredYieldStatements = [];
+		$closureImpurePoints = [];
+		$invalidateExpressions = [];
+		$closureStmtsCallback = static function (Node $node, Scope $scope) use ($nodeCallback, &$executionEnds, &$gatheredReturnStatements, &$gatheredYieldStatements, &$closureScope, &$closureImpurePoints, &$invalidateExpressions): void {
+			$nodeCallback($node, $scope);
+			if ($scope->getAnonymousFunctionReflection() !== $closureScope->getAnonymousFunctionReflection()) {
+				return;
+			}
+			if ($node instanceof PropertyAssignNode) {
+				$closureImpurePoints[] = new ImpurePoint(
+					$scope,
+					$node,
+					'propertyAssign',
+					'property assignment',
+					true,
+				);
+				return;
+			}
+			if ($node instanceof ExecutionEndNode) {
+				$executionEnds[] = $node;
+				return;
+			}
+			if ($node instanceof InvalidateExprNode) {
+				$invalidateExpressions[] = $node;
+				return;
+			}
+			if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
+				$gatheredYieldStatements[] = $node;
+			}
+			if (!$node instanceof Return_) {
+				return;
+			}
+
+			$gatheredReturnStatements[] = new ReturnStatement($scope, $node);
+		};
+
+		if (count($byRefUses) === 0) {
+			$statementResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, $closureStmtsCallback, StatementContext::createTopLevel());
+			$nodeCallback(new ClosureReturnStatementsNode(
+				$expr,
+				$gatheredReturnStatements,
+				$gatheredYieldStatements,
+				$statementResult,
+				$executionEnds,
+				array_merge($statementResult->getImpurePoints(), $closureImpurePoints),
+			), $closureScope);
+
+			return new ProcessClosureResult($scope, $statementResult->getThrowPoints(), $statementResult->getImpurePoints(), $invalidateExpressions);
+		}
+
+		$count = 0;
+		$closureResultScope = null;
+		do {
+			$prevScope = $closureScope;
+
+			$intermediaryClosureScopeResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, static function (): void {
+			}, StatementContext::createTopLevel());
+			$intermediaryClosureScope = $intermediaryClosureScopeResult->getScope();
+			foreach ($intermediaryClosureScopeResult->getExitPoints() as $exitPoint) {
+				$intermediaryClosureScope = $intermediaryClosureScope->mergeWith($exitPoint->getScope());
+			}
+
+			if ($expr->getAttribute(ImmediatelyInvokedClosureVisitor::ATTRIBUTE_NAME) === true) {
+				$closureResultScope = $intermediaryClosureScope;
+				break;
+			}
+
+			$closureScope = $scope->enterAnonymousFunction($expr, $callableParameters);
+			$closureScope = $closureScope->processClosureScope($intermediaryClosureScope, $prevScope, $byRefUses);
+
+			if ($closureScope->equals($prevScope)) {
+				break;
+			}
+			if ($count >= self::GENERALIZE_AFTER_ITERATION) {
+				$closureScope = $prevScope->generalizeWith($closureScope);
+			}
+			$count++;
+		} while ($count < self::LOOP_SCOPE_ITERATIONS);
+
+		if ($closureResultScope === null) {
+			$closureResultScope = $closureScope;
+		}
+
+		$statementResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, $closureStmtsCallback, StatementContext::createTopLevel());
+		$nodeCallback(new ClosureReturnStatementsNode(
+			$expr,
+			$gatheredReturnStatements,
+			$gatheredYieldStatements,
+			$statementResult,
+			$executionEnds,
+			array_merge($statementResult->getImpurePoints(), $closureImpurePoints),
+		), $closureScope);
+
+		return new ProcessClosureResult($scope->processClosureScope($closureResultScope, null, $byRefUses), $statementResult->getThrowPoints(), $statementResult->getImpurePoints(), $invalidateExpressions);
+	}
+
+	/**
+	 * @param InvalidateExprNode[] $invalidatedExpressions
+	 * @param string[] $uses
+	 */
+	private function processImmediatelyCalledCallable(MutatingScope $scope, array $invalidatedExpressions, array $uses): MutatingScope
+	{
+		if ($scope->isInClass()) {
+			$uses[] = 'this';
+		}
+
+		$finder = new NodeFinder();
+		foreach ($invalidatedExpressions as $invalidateExpression) {
+			$found = false;
+			foreach ($uses as $use) {
+				$result = $finder->findFirst([$invalidateExpression->getExpr()], static fn ($node) => $node instanceof Variable && $node->name === $use);
+				if ($result === null) {
+					continue;
+				}
+
+				$found = true;
+				break;
+			}
+
+			if (!$found) {
+				continue;
+			}
+
+			$scope = $scope->invalidateExpression($invalidateExpression->getExpr(), true);
+		}
+
+		return $scope;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processArrowFunctionNode(
+		Node\Stmt $stmt,
+		Expr\ArrowFunction $expr,
+		MutatingScope $scope,
+		callable $nodeCallback,
+		?Type $passedToType,
+	): ExpressionResult
+	{
+		foreach ($expr->params as $param) {
+			$this->processParamNode($stmt, $param, $scope, $nodeCallback);
+		}
+		if ($expr->returnType !== null) {
+			$nodeCallback($expr->returnType, $scope);
+		}
+
+		$arrowFunctionCallArgs = $expr->getAttribute(ArrowFunctionArgVisitor::ATTRIBUTE_NAME);
+		$arrowFunctionScope = $scope->enterArrowFunction($expr, $this->createCallableParameters(
+			$scope,
+			$expr,
+			$arrowFunctionCallArgs,
+			$passedToType,
+		));
+		$arrowFunctionType = $arrowFunctionScope->getAnonymousFunctionReflection();
+		if (!$arrowFunctionType instanceof ClosureType) {
+			throw new ShouldNotHappenException();
+		}
+		$nodeCallback(new InArrowFunctionNode($arrowFunctionType, $expr), $arrowFunctionScope);
+		$exprResult = $this->processExprNode($stmt, $expr->expr, $arrowFunctionScope, $nodeCallback, ExpressionContext::createTopLevel());
+
+		return new ExpressionResult($scope, false, $exprResult->getThrowPoints(), $exprResult->getImpurePoints());
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 * @return ParameterReflection[]|null
+	 */
+	public function createCallableParameters(Scope $scope, Expr $closureExpr, ?array $args, ?Type $passedToType): ?array
+	{
+		$callableParameters = null;
+		if ($args !== null) {
+			$closureType = $scope->getType($closureExpr);
+
+			if ($closureType->isCallable()->no()) {
+				return null;
+			}
+
+			$acceptors = $closureType->getCallableParametersAcceptors($scope);
+			if (count($acceptors) === 1) {
+				$callableParameters = $acceptors[0]->getParameters();
+
+				foreach ($callableParameters as $index => $callableParameter) {
+					if (!isset($args[$index])) {
+						continue;
+					}
+
+					$type = $scope->getType($args[$index]->value);
+					$callableParameters[$index] = new NativeParameterReflection(
+						$callableParameter->getName(),
+						$callableParameter->isOptional(),
+						$type,
+						$callableParameter->passedByReference(),
+						$callableParameter->isVariadic(),
+						$callableParameter->getDefaultValue(),
+					);
+				}
+			}
+		} elseif ($passedToType !== null && !$passedToType->isCallable()->no()) {
+			if ($passedToType instanceof UnionType) {
+				$passedToType = TypeCombinator::union(...array_filter(
+					$passedToType->getTypes(),
+					static fn (Type $type) => $type->isCallable()->yes(),
+				));
+
+				if ($passedToType->isCallable()->no()) {
+					return null;
+				}
+			}
+
+			$acceptors = $passedToType->getCallableParametersAcceptors($scope);
+			if (count($acceptors) > 0) {
+				foreach ($acceptors as $acceptor) {
+					if ($callableParameters === null) {
+						$callableParameters = array_map(static fn (ParameterReflection $callableParameter) => new NativeParameterReflection(
+							$callableParameter->getName(),
+							$callableParameter->isOptional(),
+							$callableParameter->getType(),
+							$callableParameter->passedByReference(),
+							$callableParameter->isVariadic(),
+							$callableParameter->getDefaultValue(),
+						), $acceptor->getParameters());
+						continue;
+					}
+
+					$newParameters = [];
+					foreach ($acceptor->getParameters() as $i => $callableParameter) {
+						if (!array_key_exists($i, $callableParameters)) {
+							$newParameters[] = $callableParameter;
+							continue;
+						}
+
+						$newParameters[] = $callableParameters[$i]->union(new NativeParameterReflection(
+							$callableParameter->getName(),
+							$callableParameter->isOptional(),
+							$callableParameter->getType(),
+							$callableParameter->passedByReference(),
+							$callableParameter->isVariadic(),
+							$callableParameter->getDefaultValue(),
+						));
+					}
+
+					$callableParameters = $newParameters;
+				}
+			}
+		}
+
+		return $callableParameters;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processParamNode(
+		Node\Stmt $stmt,
+		Node\Param $param,
+		MutatingScope $scope,
+		callable $nodeCallback,
+	): void
+	{
+		$this->processAttributeGroups($stmt, $param->attrGroups, $scope, $nodeCallback);
+		$nodeCallback($param, $scope);
+		if ($param->type !== null) {
+			$nodeCallback($param->type, $scope);
+		}
+		if ($param->default === null) {
+			return;
+		}
+
+		$this->processExprNode($stmt, $param->default, $scope, $nodeCallback, ExpressionContext::createDeep());
+	}
+
+	/**
+	 * @param AttributeGroup[] $attrGroups
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processAttributeGroups(
+		Node\Stmt $stmt,
+		array $attrGroups,
+		MutatingScope $scope,
+		callable $nodeCallback,
+	): void
+	{
+		foreach ($attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				foreach ($attr->args as $arg) {
+					$this->processExprNode($stmt, $arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
+					$nodeCallback($arg, $scope);
+				}
+				$nodeCallback($attr, $scope);
+			}
+			$nodeCallback($attrGroup, $scope);
+		}
+	}
+
+	/**
+	 * @param Node\PropertyHook[] $hooks
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processPropertyHooks(
+		Node\Stmt $stmt,
+		Identifier|Name|ComplexType|null $nativeTypeNode,
+		?Type $phpDocType,
+		string $propertyName,
+		array $hooks,
+		MutatingScope $scope,
+		callable $nodeCallback,
+	): void
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$classReflection = $scope->getClassReflection();
+
+		foreach ($hooks as $hook) {
+			$nodeCallback($hook, $scope);
+			$this->processAttributeGroups($stmt, $hook->attrGroups, $scope, $nodeCallback);
+
+			[, $phpDocParameterTypes,,,, $phpDocThrowType,,,,,,,, $phpDocComment] = $this->getPhpDocs($scope, $hook);
+
+			foreach ($hook->params as $param) {
+				$this->processParamNode($stmt, $param, $scope, $nodeCallback);
+			}
+
+			[$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $hook);
+
+			$hookScope = $scope->enterPropertyHook(
+				$hook,
+				$propertyName,
+				$nativeTypeNode,
+				$phpDocType,
+				$phpDocParameterTypes,
+				$phpDocThrowType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$phpDocComment,
+			);
+			$hookReflection = $hookScope->getFunction();
+			if (!$hookReflection instanceof PhpMethodFromParserNodeReflection) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (!$classReflection->hasNativeProperty($propertyName)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$propertyReflection = $classReflection->getNativeProperty($propertyName);
+
+			$nodeCallback(new InPropertyHookNode(
+				$classReflection,
+				$hookReflection,
+				$propertyReflection,
+				$hook,
+			), $hookScope);
+
+			$stmts = $hook->getStmts();
+			if ($stmts === null) {
+				return;
+			}
+
+			if ($hook->body instanceof Expr) {
+				// enrich attributes of nodes in short hook body statements
+				$traverser = new NodeTraverser(
+					new LineAttributesVisitor($hook->body->getStartLine(), $hook->body->getEndLine()),
+				);
+				$traverser->traverse($stmts);
+			}
+
+			$gatheredReturnStatements = [];
+			$executionEnds = [];
+			$methodImpurePoints = [];
+			$statementResult = $this->processStmtNodes(new PropertyHookStatementNode($hook), $stmts, $hookScope, static function (Node $node, Scope $scope) use ($nodeCallback, $hookScope, &$gatheredReturnStatements, &$executionEnds, &$hookImpurePoints): void {
+				$nodeCallback($node, $scope);
+				if ($scope->getFunction() !== $hookScope->getFunction()) {
+					return;
+				}
+				if ($scope->isInAnonymousFunction()) {
+					return;
+				}
+				if ($node instanceof PropertyAssignNode) {
+					$hookImpurePoints[] = new ImpurePoint(
+						$scope,
+						$node,
+						'propertyAssign',
+						'property assignment',
+						true,
+					);
+					return;
+				}
+				if ($node instanceof ExecutionEndNode) {
+					$executionEnds[] = $node;
+					return;
+				}
+				if (!$node instanceof Return_) {
+					return;
+				}
+
+				$gatheredReturnStatements[] = new ReturnStatement($scope, $node);
+			}, StatementContext::createTopLevel());
+
+			$nodeCallback(new PropertyHookReturnStatementsNode(
+				$hook,
+				$gatheredReturnStatements,
+				$statementResult,
+				$executionEnds,
+				array_merge($statementResult->getImpurePoints(), $methodImpurePoints),
+				$classReflection,
+				$hookReflection,
+				$propertyReflection,
+			), $hookScope);
+		}
+	}
+
+	/**
+	 * @param MethodReflection|FunctionReflection|null $calleeReflection
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processArgs(
+		Node\Stmt $stmt,
+		$calleeReflection,
+		?ExtendedMethodReflection $nakedMethodReflection,
+		?ParametersAcceptor $parametersAcceptor,
+		CallLike $callLike,
+		MutatingScope $scope,
+		callable $nodeCallback,
+		ExpressionContext $context,
+		?MutatingScope $closureBindScope = null,
+	): ExpressionResult
+	{
+		$args = $callLike->getArgs();
+
+		if ($parametersAcceptor !== null) {
+			$parameters = $parametersAcceptor->getParameters();
+		}
+
+		$hasYield = false;
+		$throwPoints = [];
+		$impurePoints = [];
+		foreach ($args as $i => $arg) {
+			$assignByReference = false;
+			$parameter = null;
+			$parameterType = null;
+			$parameterNativeType = null;
+			if (isset($parameters) && $parametersAcceptor !== null) {
+				if (isset($parameters[$i])) {
+					$assignByReference = $parameters[$i]->passedByReference()->createsNewVariable();
+					$parameterType = $parameters[$i]->getType();
+
+					if ($parameters[$i] instanceof ExtendedParameterReflection) {
+						$parameterNativeType = $parameters[$i]->getNativeType();
+					}
+					$parameter = $parameters[$i];
+				} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
+					$lastParameter = $parameters[count($parameters) - 1];
+					$assignByReference = $lastParameter->passedByReference()->createsNewVariable();
+					$parameterType = $lastParameter->getType();
+
+					if ($lastParameter instanceof ExtendedParameterReflection) {
+						$parameterNativeType = $lastParameter->getNativeType();
+					}
+					$parameter = $lastParameter;
+				}
+			}
+
+			$lookForUnset = false;
+			if ($assignByReference) {
+				$isBuiltin = false;
+				if ($calleeReflection instanceof FunctionReflection && $calleeReflection->isBuiltin()) {
+					$isBuiltin = true;
+				} elseif ($calleeReflection instanceof ExtendedMethodReflection && $calleeReflection->getDeclaringClass()->isBuiltin()) {
+					$isBuiltin = true;
+				}
+				if (
+					$isBuiltin
+					|| ($parameterNativeType === null || !$parameterNativeType->isNull()->no())
+				) {
+					$scope = $this->lookForSetAllowedUndefinedExpressions($scope, $arg->value);
+					$lookForUnset = true;
+				}
+			}
+
+			if ($calleeReflection !== null) {
+				$scope = $scope->pushInFunctionCall($calleeReflection, $parameter);
+			}
+
+			$originalArg = $arg->getAttribute(ArgumentsNormalizer::ORIGINAL_ARG_ATTRIBUTE) ?? $arg;
+			$nodeCallback($originalArg, $scope);
+
+			$originalScope = $scope;
+			$scopeToPass = $scope;
+			if ($i === 0 && $closureBindScope !== null) {
+				$scopeToPass = $closureBindScope;
+			}
+
+			if ($parameter instanceof ExtendedParameterReflection) {
+				$parameterCallImmediately = $parameter->isImmediatelyInvokedCallable();
+				if ($parameterCallImmediately->maybe()) {
+					$callCallbackImmediately = $calleeReflection instanceof FunctionReflection;
+				} else {
+					$callCallbackImmediately = $parameterCallImmediately->yes();
+				}
+			} else {
+				$callCallbackImmediately = $calleeReflection instanceof FunctionReflection;
+			}
+			if ($arg->value instanceof Expr\Closure) {
+				$restoreThisScope = null;
+				if (
+					$closureBindScope === null
+					&& $parameter instanceof ExtendedParameterReflection
+					&& $parameter->getClosureThisType() !== null
+					&& !$arg->value->static
+				) {
+					$restoreThisScope = $scopeToPass;
+					$scopeToPass = $scopeToPass->assignVariable('this', $parameter->getClosureThisType(), new ObjectWithoutClassType(), TrinaryLogic::createYes());
+				}
+
+				if ($parameter !== null) {
+					$overwritingParameterType = $this->getParameterTypeFromParameterClosureTypeExtension($callLike, $calleeReflection, $parameter, $scopeToPass);
+
+					if ($overwritingParameterType !== null) {
+						$parameterType = $overwritingParameterType;
+					}
+				}
+
+				$this->callNodeCallbackWithExpression($nodeCallback, $arg->value, $scopeToPass, $context);
+				$closureResult = $this->processClosureNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $context, $parameterType ?? null);
+				if ($callCallbackImmediately) {
+					$throwPoints = array_merge($throwPoints, array_map(static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $closureResult->getThrowPoints()));
+					$impurePoints = array_merge($impurePoints, $closureResult->getImpurePoints());
+				}
+
+				$uses = [];
+				foreach ($arg->value->uses as $use) {
+					if (!is_string($use->var->name)) {
+						continue;
+					}
+
+					$uses[] = $use->var->name;
+				}
+
+				$scope = $closureResult->getScope();
+				$invalidateExpressions = $closureResult->getInvalidateExpressions();
+				if ($restoreThisScope !== null) {
+					$nodeFinder = new NodeFinder();
+					$cb = static fn ($expr) => $expr instanceof Variable && $expr->name === 'this';
+					foreach ($invalidateExpressions as $j => $invalidateExprNode) {
+						$foundThis = $nodeFinder->findFirst([$invalidateExprNode->getExpr()], $cb);
+						if ($foundThis === null) {
+							continue;
+						}
+
+						unset($invalidateExpressions[$j]);
+					}
+					$invalidateExpressions = array_values($invalidateExpressions);
+					$scope = $scope->restoreThis($restoreThisScope);
+				}
+
+				$scope = $this->processImmediatelyCalledCallable($scope, $invalidateExpressions, $uses);
+			} elseif ($arg->value instanceof Expr\ArrowFunction) {
+				if (
+					$closureBindScope === null
+					&& $parameter instanceof ExtendedParameterReflection
+					&& $parameter->getClosureThisType() !== null
+					&& !$arg->value->static
+				) {
+					$scopeToPass = $scopeToPass->assignVariable('this', $parameter->getClosureThisType(), new ObjectWithoutClassType(), TrinaryLogic::createYes());
+				}
+
+				if ($parameter !== null) {
+					$overwritingParameterType = $this->getParameterTypeFromParameterClosureTypeExtension($callLike, $calleeReflection, $parameter, $scopeToPass);
+
+					if ($overwritingParameterType !== null) {
+						$parameterType = $overwritingParameterType;
+					}
+				}
+
+				$this->callNodeCallbackWithExpression($nodeCallback, $arg->value, $scopeToPass, $context);
+				$arrowFunctionResult = $this->processArrowFunctionNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $parameterType ?? null);
+				if ($callCallbackImmediately) {
+					$throwPoints = array_merge($throwPoints, array_map(static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $arrowFunctionResult->getThrowPoints()));
+					$impurePoints = array_merge($impurePoints, $arrowFunctionResult->getImpurePoints());
+				}
+			} else {
+				$exprType = $scope->getType($arg->value);
+				$exprResult = $this->processExprNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $context->enterDeep());
+				$throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
+				$scope = $exprResult->getScope();
+				$hasYield = $hasYield || $exprResult->hasYield();
+
+				if ($exprType->isCallable()->yes()) {
+					$acceptors = $exprType->getCallableParametersAcceptors($scope);
+					if (count($acceptors) === 1) {
+						$scope = $this->processImmediatelyCalledCallable($scope, $acceptors[0]->getInvalidateExpressions(), $acceptors[0]->getUsedVariables());
+						if ($callCallbackImmediately) {
+							$callableThrowPoints = array_map(static fn (SimpleThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $acceptors[0]->getThrowPoints());
+							if (!$this->implicitThrows) {
+								$callableThrowPoints = array_values(array_filter($callableThrowPoints, static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit()));
+							}
+							$throwPoints = array_merge($throwPoints, $callableThrowPoints);
+							$impurePoints = array_merge($impurePoints, array_map(static fn (SimpleImpurePoint $impurePoint) => new ImpurePoint($scope, $arg->value, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain()), $acceptors[0]->getImpurePoints()));
+						}
+					}
+				}
+			}
+
+			if ($assignByReference && $lookForUnset) {
+				$scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $arg->value);
+			}
+
+			if ($calleeReflection !== null) {
+				$scope = $scope->popInFunctionCall();
+			}
+
+			if ($i !== 0 || $closureBindScope === null) {
+				continue;
+			}
+
+			$scope = $scope->restoreOriginalScopeAfterClosureBind($originalScope);
+		}
+		foreach ($args as $i => $arg) {
+			if (!isset($parameters) || $parametersAcceptor === null) {
+				continue;
+			}
+
+			$byRefType = new MixedType();
+			$assignByReference = false;
+			$currentParameter = null;
+			if (isset($parameters[$i])) {
+				$currentParameter = $parameters[$i];
+			} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
+				$currentParameter = $parameters[count($parameters) - 1];
+			}
+
+			if ($currentParameter !== null) {
+				$assignByReference = $currentParameter->passedByReference()->createsNewVariable();
+				if ($assignByReference) {
+					if ($currentParameter instanceof ExtendedParameterReflection && $currentParameter->getOutType() !== null) {
+						$byRefType = $currentParameter->getOutType();
+					} elseif (
+						$calleeReflection instanceof MethodReflection
+						&& !$calleeReflection->getDeclaringClass()->isBuiltin()
+					) {
+						$byRefType = $currentParameter->getType();
+					} elseif (
+						$calleeReflection instanceof FunctionReflection
+						&& !$calleeReflection->isBuiltin()
+					) {
+						$byRefType = $currentParameter->getType();
+					}
+				}
+			}
+
+			if ($assignByReference) {
+				if ($currentParameter === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				$argValue = $arg->value;
+				if (!$argValue instanceof Variable || $argValue->name !== 'this') {
+					$paramOutType = $this->getParameterOutExtensionsType($callLike, $calleeReflection, $currentParameter, $scope);
+					if ($paramOutType !== null) {
+						$byRefType = $paramOutType;
+					}
+
+					$result = $this->processAssignVar(
+						$scope,
+						$stmt,
+						$argValue,
+						new TypeExpr($byRefType),
+						static function (Node $node, Scope $scope) use ($nodeCallback): void {
+							if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
+								return;
+							}
+
+							$nodeCallback($node, $scope);
+						},
+						$context,
+						static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+						true,
+					);
+					$scope = $result->getScope();
+				}
+			} elseif ($calleeReflection !== null && $calleeReflection->hasSideEffects()->yes()) {
+				$argType = $scope->getType($arg->value);
+				if (!$argType->isObject()->no()) {
+					$nakedReturnType = null;
+					if ($nakedMethodReflection !== null) {
+						$nakedParametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+							$scope,
+							$args,
+							$nakedMethodReflection->getVariants(),
+							$nakedMethodReflection->getNamedArgumentsVariants(),
+						);
+						$nakedReturnType = $nakedParametersAcceptor->getReturnType();
+					}
+					if (
+						$nakedReturnType === null
+						|| !(new ThisType($nakedMethodReflection->getDeclaringClass()))->isSuperTypeOf($nakedReturnType)->yes()
+						|| $nakedMethodReflection->isPure()->no()
+					) {
+						$nodeCallback(new InvalidateExprNode($arg->value), $scope);
+						$scope = $scope->invalidateExpression($arg->value, true);
+					}
+				} elseif (!(new ResourceType())->isSuperTypeOf($argType)->no()) {
+					$nodeCallback(new InvalidateExprNode($arg->value), $scope);
+					$scope = $scope->invalidateExpression($arg->value, true);
+				}
+			}
+		}
+
+		return new ExpressionResult($scope, $hasYield, $throwPoints, $impurePoints);
+	}
+
+	/**
+	 * @param MethodReflection|FunctionReflection|null $calleeReflection
+	 */
+	private function getParameterTypeFromParameterClosureTypeExtension(CallLike $callLike, $calleeReflection, ParameterReflection $parameter, MutatingScope $scope): ?Type
+	{
+		if ($callLike instanceof FuncCall && $calleeReflection instanceof FunctionReflection) {
+			foreach ($this->parameterClosureTypeExtensionProvider->getFunctionParameterClosureTypeExtensions() as $functionParameterClosureTypeExtension) {
+				if ($functionParameterClosureTypeExtension->isFunctionSupported($calleeReflection, $parameter)) {
+					return $functionParameterClosureTypeExtension->getTypeFromFunctionCall($calleeReflection, $callLike, $parameter, $scope);
+				}
+			}
+		} elseif ($calleeReflection instanceof MethodReflection) {
+			if ($callLike instanceof StaticCall) {
+				foreach ($this->parameterClosureTypeExtensionProvider->getStaticMethodParameterClosureTypeExtensions() as $staticMethodParameterClosureTypeExtension) {
+					if ($staticMethodParameterClosureTypeExtension->isStaticMethodSupported($calleeReflection, $parameter)) {
+						return $staticMethodParameterClosureTypeExtension->getTypeFromStaticMethodCall($calleeReflection, $callLike, $parameter, $scope);
+					}
+				}
+			} elseif ($callLike instanceof MethodCall) {
+				foreach ($this->parameterClosureTypeExtensionProvider->getMethodParameterClosureTypeExtensions() as $methodParameterClosureTypeExtension) {
+					if ($methodParameterClosureTypeExtension->isMethodSupported($calleeReflection, $parameter)) {
+						return $methodParameterClosureTypeExtension->getTypeFromMethodCall($calleeReflection, $callLike, $parameter, $scope);
+					}
+				}
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param MethodReflection|FunctionReflection|null $calleeReflection
+	 */
+	private function getParameterOutExtensionsType(CallLike $callLike, $calleeReflection, ParameterReflection $currentParameter, MutatingScope $scope): ?Type
+	{
+		$paramOutTypes = [];
+		if ($callLike instanceof FuncCall && $calleeReflection instanceof FunctionReflection) {
+			foreach ($this->parameterOutTypeExtensionProvider->getFunctionParameterOutTypeExtensions() as $functionParameterOutTypeExtension) {
+				if (!$functionParameterOutTypeExtension->isFunctionSupported($calleeReflection, $currentParameter)) {
+					continue;
+				}
+
+				$resolvedType = $functionParameterOutTypeExtension->getParameterOutTypeFromFunctionCall($calleeReflection, $callLike, $currentParameter, $scope);
+				if ($resolvedType === null) {
+					continue;
+				}
+				$paramOutTypes[] = $resolvedType;
+			}
+		} elseif ($callLike instanceof MethodCall && $calleeReflection instanceof MethodReflection) {
+			foreach ($this->parameterOutTypeExtensionProvider->getMethodParameterOutTypeExtensions() as $methodParameterOutTypeExtension) {
+				if (!$methodParameterOutTypeExtension->isMethodSupported($calleeReflection, $currentParameter)) {
+					continue;
+				}
+
+				$resolvedType = $methodParameterOutTypeExtension->getParameterOutTypeFromMethodCall($calleeReflection, $callLike, $currentParameter, $scope);
+				if ($resolvedType === null) {
+					continue;
+				}
+				$paramOutTypes[] = $resolvedType;
+			}
+		} elseif ($callLike instanceof StaticCall && $calleeReflection instanceof MethodReflection) {
+			foreach ($this->parameterOutTypeExtensionProvider->getStaticMethodParameterOutTypeExtensions() as $staticMethodParameterOutTypeExtension) {
+				if (!$staticMethodParameterOutTypeExtension->isStaticMethodSupported($calleeReflection, $currentParameter)) {
+					continue;
+				}
+
+				$resolvedType = $staticMethodParameterOutTypeExtension->getParameterOutTypeFromStaticMethodCall($calleeReflection, $callLike, $currentParameter, $scope);
+				if ($resolvedType === null) {
+					continue;
+				}
+				$paramOutTypes[] = $resolvedType;
+			}
+		}
+
+		if (count($paramOutTypes) === 1) {
+			return $paramOutTypes[0];
+		}
+
+		if (count($paramOutTypes) > 1) {
+			return TypeCombinator::union(...$paramOutTypes);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 * @param Closure(MutatingScope $scope): ExpressionResult $processExprCallback
+	 */
+	private function processAssignVar(
+		MutatingScope $scope,
+		Node\Stmt $stmt,
+		Expr $var,
+		Expr $assignedExpr,
+		callable $nodeCallback,
+		ExpressionContext $context,
+		Closure $processExprCallback,
+		bool $enterExpressionAssign,
+	): ExpressionResult
+	{
+		$nodeCallback($var, $enterExpressionAssign ? $scope->enterExpressionAssign($var) : $scope);
+		$hasYield = false;
+		$throwPoints = [];
+		$impurePoints = [];
+		$isAssignOp = $assignedExpr instanceof Expr\AssignOp && !$enterExpressionAssign;
+		if ($var instanceof Variable && is_string($var->name)) {
+			$result = $processExprCallback($scope);
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			if (in_array($var->name, Scope::SUPERGLOBAL_VARIABLES, true)) {
+				$impurePoints[] = new ImpurePoint($scope, $var, 'superglobal', 'assign to superglobal variable', true);
+			}
+			$assignedExpr = $this->unwrapAssign($assignedExpr);
+			$type = $scope->getType($assignedExpr);
+
+			$conditionalExpressions = [];
+			if ($assignedExpr instanceof Ternary) {
+				$if = $assignedExpr->if;
+				if ($if === null) {
+					$if = $assignedExpr->cond;
+				}
+				$condScope = $this->processExprNode($stmt, $assignedExpr->cond, $scope, static function (): void {
+				}, ExpressionContext::createDeep())->getScope();
+				$truthySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($condScope, $assignedExpr->cond, TypeSpecifierContext::createTruthy());
+				$falseySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($condScope, $assignedExpr->cond, TypeSpecifierContext::createFalsey());
+				$truthyScope = $condScope->filterBySpecifiedTypes($truthySpecifiedTypes);
+				$falsyScope = $condScope->filterBySpecifiedTypes($falseySpecifiedTypes);
+				$truthyType = $truthyScope->getType($if);
+				$falseyType = $falsyScope->getType($assignedExpr->else);
+
+				if (
+					$truthyType->isSuperTypeOf($falseyType)->no()
+					&& $falseyType->isSuperTypeOf($truthyType)->no()
+				) {
+					$conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
+					$conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
+					$conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
+					$conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
+				}
+			}
+
+			$scope = $result->getScope();
+			$truthySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($scope, $assignedExpr, TypeSpecifierContext::createTruthy());
+			$falseySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($scope, $assignedExpr, TypeSpecifierContext::createFalsey());
+
+			$truthyType = TypeCombinator::removeFalsey($type);
+			$falseyType = TypeCombinator::intersect($type, StaticTypeFactory::falsey());
+
+			$conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
+			$conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
+			$conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
+			$conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
+
+			$nodeCallback(new VariableAssignNode($var, $assignedExpr, $isAssignOp), $result->getScope());
+			$scope = $scope->assignVariable($var->name, $type, $scope->getNativeType($assignedExpr), TrinaryLogic::createYes());
+			foreach ($conditionalExpressions as $exprString => $holders) {
+				$scope = $scope->addConditionalExpressions($exprString, $holders);
+			}
+		} elseif ($var instanceof ArrayDimFetch) {
+			$dimFetchStack = [];
+			$originalVar = $var;
+			$assignedPropertyExpr = $assignedExpr;
+			while ($var instanceof ArrayDimFetch) {
+				$varForSetOffsetValue = $var->var;
+				if ($varForSetOffsetValue instanceof PropertyFetch || $varForSetOffsetValue instanceof StaticPropertyFetch) {
+					$varForSetOffsetValue = new OriginalPropertyTypeExpr($varForSetOffsetValue);
+				}
+				$assignedPropertyExpr = new SetOffsetValueTypeExpr(
+					$varForSetOffsetValue,
+					$var->dim,
+					$assignedPropertyExpr,
+				);
+				$dimFetchStack[] = $var;
+				$var = $var->var;
+			}
+
+			// 1. eval root expr
+			if ($enterExpressionAssign) {
+				$scope = $scope->enterExpressionAssign($var);
+			}
+			$result = $this->processExprNode($stmt, $var, $scope, $nodeCallback, $context->enterDeep());
+			$hasYield = $result->hasYield();
+			$throwPoints = $result->getThrowPoints();
+			$impurePoints = $result->getImpurePoints();
+			$scope = $result->getScope();
+			if ($enterExpressionAssign) {
+				$scope = $scope->exitExpressionAssign($var);
+			}
+
+			// 2. eval dimensions
+			$offsetTypes = [];
+			$offsetNativeTypes = [];
+			$dimFetchStack = array_reverse($dimFetchStack);
+			$lastDimKey = array_key_last($dimFetchStack);
+			foreach ($dimFetchStack as $key => $dimFetch) {
+				$dimExpr = $dimFetch->dim;
+
+				// Callback was already called for last dim at the beginning of the method.
+				if ($key !== $lastDimKey) {
+					$nodeCallback($dimFetch, $enterExpressionAssign ? $scope->enterExpressionAssign($dimFetch) : $scope);
+				}
+
+				if ($dimExpr === null) {
+					$offsetTypes[] = null;
+					$offsetNativeTypes[] = null;
+
+				} else {
+					$offsetTypes[] = $scope->getType($dimExpr);
+					$offsetNativeTypes[] = $scope->getNativeType($dimExpr);
+
+					if ($enterExpressionAssign) {
+						$scope->enterExpressionAssign($dimExpr);
+					}
+					$result = $this->processExprNode($stmt, $dimExpr, $scope, $nodeCallback, $context->enterDeep());
+					$hasYield = $hasYield || $result->hasYield();
+					$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+					$scope = $result->getScope();
+
+					if ($enterExpressionAssign) {
+						$scope = $scope->exitExpressionAssign($dimExpr);
+					}
+				}
+			}
+
+			$valueToWrite = $scope->getType($assignedExpr);
+			$nativeValueToWrite = $scope->getNativeType($assignedExpr);
+			$originalValueToWrite = $valueToWrite;
+			$originalNativeValueToWrite = $nativeValueToWrite;
+
+			// 3. eval assigned expr
+			$result = $processExprCallback($scope);
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			$scope = $result->getScope();
+
+			$varType = $scope->getType($var);
+			$varNativeType = $scope->getNativeType($var);
+
+			// 4. compose types
+			if ($varType instanceof ErrorType) {
+				$varType = new ConstantArrayType([], []);
+			}
+			if ($varNativeType instanceof ErrorType) {
+				$varNativeType = new ConstantArrayType([], []);
+			}
+			$offsetValueType = $varType;
+			$offsetNativeValueType = $varNativeType;
+
+			$valueToWrite = $this->produceArrayDimFetchAssignValueToWrite($offsetTypes, $offsetValueType, $valueToWrite);
+
+			if (!$offsetValueType->equals($offsetNativeValueType) || !$valueToWrite->equals($nativeValueToWrite)) {
+				$nativeValueToWrite = $this->produceArrayDimFetchAssignValueToWrite($offsetNativeTypes, $offsetNativeValueType, $nativeValueToWrite);
+			} else {
+				$rewritten = false;
+				foreach ($offsetTypes as $i => $offsetType) {
+					$offsetNativeType = $offsetNativeTypes[$i];
+					if ($offsetType === null) {
+						if ($offsetNativeType !== null) {
+							throw new ShouldNotHappenException();
+						}
+
+						continue;
+					} elseif ($offsetNativeType === null) {
+						throw new ShouldNotHappenException();
+					}
+					if ($offsetType->equals($offsetNativeType)) {
+						continue;
+					}
+
+					$nativeValueToWrite = $this->produceArrayDimFetchAssignValueToWrite($offsetNativeTypes, $offsetNativeValueType, $nativeValueToWrite);
+					$rewritten = true;
+					break;
+				}
+
+				if (!$rewritten) {
+					$nativeValueToWrite = $valueToWrite;
+				}
+			}
+
+			if ($varType->isArray()->yes() || !(new ObjectType(ArrayAccess::class))->isSuperTypeOf($varType)->yes()) {
+				if ($var instanceof Variable && is_string($var->name)) {
+					$nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+					$scope = $scope->assignVariable($var->name, $valueToWrite, $nativeValueToWrite, TrinaryLogic::createYes());
+				} else {
+					if ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
+						$nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+						if ($var instanceof PropertyFetch && $var->name instanceof Node\Identifier && !$isAssignOp) {
+							$scope = $scope->assignInitializedProperty($scope->getType($var->var), $var->name->toString());
+						}
+					}
+					$scope = $scope->assignExpression(
+						$var,
+						$valueToWrite,
+						$nativeValueToWrite,
+					);
+				}
+
+				if ($originalVar->dim instanceof Variable || $originalVar->dim instanceof Node\Scalar) {
+					$currentVarType = $scope->getType($originalVar);
+					if (!$originalValueToWrite->isSuperTypeOf($currentVarType)->yes()) {
+						$scope = $scope->assignExpression(
+							$originalVar,
+							$originalValueToWrite,
+							$originalNativeValueToWrite,
+						);
+					}
+				}
+			} else {
+				if ($var instanceof Variable) {
+					$nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+				} elseif ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
+					$nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+					if ($var instanceof PropertyFetch && $var->name instanceof Node\Identifier && !$isAssignOp) {
+						$scope = $scope->assignInitializedProperty($scope->getType($var->var), $var->name->toString());
+					}
+				}
+			}
+
+			if (!$varType->isArray()->yes() && !(new ObjectType(ArrayAccess::class))->isSuperTypeOf($varType)->no()) {
+				$throwPoints = array_merge($throwPoints, $this->processExprNode(
+					$stmt,
+					new MethodCall($var, 'offsetSet'),
+					$scope,
+					static function (): void {
+					},
+					$context,
+				)->getThrowPoints());
+			}
+		} elseif ($var instanceof PropertyFetch) {
+			$objectResult = $this->processExprNode($stmt, $var->var, $scope, $nodeCallback, $context);
+			$hasYield = $objectResult->hasYield();
+			$throwPoints = $objectResult->getThrowPoints();
+			$impurePoints = $objectResult->getImpurePoints();
+			$scope = $objectResult->getScope();
+
+			$propertyName = null;
+			if ($var->name instanceof Node\Identifier) {
+				$propertyName = $var->name->name;
+			} else {
+				$propertyNameResult = $this->processExprNode($stmt, $var->name, $scope, $nodeCallback, $context);
+				$hasYield = $hasYield || $propertyNameResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $propertyNameResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $propertyNameResult->getImpurePoints());
+				$scope = $propertyNameResult->getScope();
+			}
+
+			$result = $processExprCallback($scope);
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			$scope = $result->getScope();
+
+			if ($var->name instanceof Expr && $this->phpVersion->supportsPropertyHooks()) {
+				$throwPoints[] = ThrowPoint::createImplicit($scope, $var);
+			}
+
+			$propertyHolderType = $scope->getType($var->var);
+			if ($propertyName !== null && $propertyHolderType->hasProperty($propertyName)->yes()) {
+				$propertyReflection = $propertyHolderType->getProperty($propertyName, $scope);
+				$assignedExprType = $scope->getType($assignedExpr);
+				$nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scope);
+				if ($propertyReflection->canChangeTypeAfterAssignment()) {
+					if ($propertyReflection->hasNativeType() && $scope->isDeclareStrictTypes()) {
+						$propertyNativeType = $propertyReflection->getNativeType();
+
+						$scope = $scope->assignExpression($var, TypeCombinator::intersect($assignedExprType->toCoercedArgumentType(true), $propertyNativeType), TypeCombinator::intersect($scope->getNativeType($assignedExpr)->toCoercedArgumentType(true), $propertyNativeType));
+					} else {
+						$scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
+					}
+				}
+				$declaringClass = $propertyReflection->getDeclaringClass();
+				if ($declaringClass->hasNativeProperty($propertyName)) {
+					$nativeProperty = $declaringClass->getNativeProperty($propertyName);
+					if (
+						!$nativeProperty->getNativeType()->accepts($assignedExprType, true)->yes()
+					) {
+						$throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(TypeError::class), $assignedExpr, false);
+					}
+					if ($this->phpVersion->supportsPropertyHooks()) {
+						$throwPoints = array_merge($throwPoints, $this->getPropertyAssignThrowPointsFromSetHook($scope, $var, $nativeProperty));
+					}
+					if ($enterExpressionAssign) {
+						$scope = $scope->assignInitializedProperty($propertyHolderType, $propertyName);
+					}
+				}
+			} else {
+				// fallback
+				$assignedExprType = $scope->getType($assignedExpr);
+				$nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scope);
+				$scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
+				// simulate dynamic property assign by __set to get throw points
+				if (!$propertyHolderType->hasMethod('__set')->no()) {
+					$throwPoints = array_merge($throwPoints, $this->processExprNode(
+						$stmt,
+						new MethodCall($var->var, '__set'),
+						$scope,
+						static function (): void {
+						},
+						$context,
+					)->getThrowPoints());
+				}
+			}
+
+		} elseif ($var instanceof Expr\StaticPropertyFetch) {
+			if ($var->class instanceof Node\Name) {
+				$propertyHolderType = $scope->resolveTypeByName($var->class);
+			} else {
+				$this->processExprNode($stmt, $var->class, $scope, $nodeCallback, $context);
+				$propertyHolderType = $scope->getType($var->class);
+			}
+
+			$propertyName = null;
+			if ($var->name instanceof Node\Identifier) {
+				$propertyName = $var->name->name;
+			} else {
+				$propertyNameResult = $this->processExprNode($stmt, $var->name, $scope, $nodeCallback, $context);
+				$hasYield = $propertyNameResult->hasYield();
+				$throwPoints = $propertyNameResult->getThrowPoints();
+				$impurePoints = $propertyNameResult->getImpurePoints();
+				$scope = $propertyNameResult->getScope();
+			}
+
+			$result = $processExprCallback($scope);
+			$hasYield = $hasYield || $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			$scope = $result->getScope();
+
+			if ($propertyName !== null) {
+				$propertyReflection = $scope->getPropertyReflection($propertyHolderType, $propertyName);
+				$assignedExprType = $scope->getType($assignedExpr);
+				$nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scope);
+				if ($propertyReflection !== null && $propertyReflection->canChangeTypeAfterAssignment()) {
+					if ($propertyReflection->hasNativeType() && $scope->isDeclareStrictTypes()) {
+						$propertyNativeType = $propertyReflection->getNativeType();
+
+						$scope = $scope->assignExpression($var, TypeCombinator::intersect($assignedExprType->toCoercedArgumentType(true), $propertyNativeType), TypeCombinator::intersect($scope->getNativeType($assignedExpr)->toCoercedArgumentType(true), $propertyNativeType));
+					} else {
+						$scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
+					}
+				}
+			} else {
+				// fallback
+				$assignedExprType = $scope->getType($assignedExpr);
+				$nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scope);
+				$scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
+			}
+		} elseif ($var instanceof List_) {
+			$result = $processExprCallback($scope);
+			$hasYield = $result->hasYield();
+			$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+			$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			$scope = $result->getScope();
+			foreach ($var->items as $i => $arrayItem) {
+				if ($arrayItem === null) {
+					continue;
+				}
+
+				$itemScope = $scope;
+				if ($enterExpressionAssign) {
+					$itemScope = $itemScope->enterExpressionAssign($arrayItem->value);
+				}
+				$itemScope = $this->lookForSetAllowedUndefinedExpressions($itemScope, $arrayItem->value);
+				$nodeCallback($arrayItem, $itemScope);
+				if ($arrayItem->key !== null) {
+					$keyResult = $this->processExprNode($stmt, $arrayItem->key, $itemScope, $nodeCallback, $context->enterDeep());
+					$hasYield = $hasYield || $keyResult->hasYield();
+					$throwPoints = array_merge($throwPoints, $keyResult->getThrowPoints());
+					$impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
+					$itemScope = $keyResult->getScope();
+				}
+
+				$valueResult = $this->processExprNode($stmt, $arrayItem->value, $itemScope, $nodeCallback, $context->enterDeep());
+				$hasYield = $hasYield || $valueResult->hasYield();
+				$throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
+
+				if ($arrayItem->key === null) {
+					$dimExpr = new Node\Scalar\Int_($i);
+				} else {
+					$dimExpr = $arrayItem->key;
+				}
+				$result = $this->processAssignVar(
+					$scope,
+					$stmt,
+					$arrayItem->value,
+					new GetOffsetValueTypeExpr($assignedExpr, $dimExpr),
+					$nodeCallback,
+					$context,
+					static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+					$enterExpressionAssign,
+				);
+				$scope = $result->getScope();
+				$hasYield = $hasYield || $result->hasYield();
+				$throwPoints = array_merge($throwPoints, $result->getThrowPoints());
+				$impurePoints = array_merge($impurePoints, $result->getImpurePoints());
+			}
+		} elseif ($var instanceof ExistingArrayDimFetch) {
+			$dimFetchStack = [];
+			$assignedPropertyExpr = $assignedExpr;
+			while ($var instanceof ExistingArrayDimFetch) {
+				$varForSetOffsetValue = $var->getVar();
+				if ($varForSetOffsetValue instanceof PropertyFetch || $varForSetOffsetValue instanceof StaticPropertyFetch) {
+					$varForSetOffsetValue = new OriginalPropertyTypeExpr($varForSetOffsetValue);
+				}
+				$assignedPropertyExpr = new SetExistingOffsetValueTypeExpr(
+					$varForSetOffsetValue,
+					$var->getDim(),
+					$assignedPropertyExpr,
+				);
+				$dimFetchStack[] = $var;
+				$var = $var->getVar();
+			}
+
+			$offsetTypes = [];
+			$offsetNativeTypes = [];
+			foreach (array_reverse($dimFetchStack) as $dimFetch) {
+				$dimExpr = $dimFetch->getDim();
+				$offsetTypes[] = $scope->getType($dimExpr);
+				$offsetNativeTypes[] = $scope->getNativeType($dimExpr);
+			}
+
+			$valueToWrite = $scope->getType($assignedExpr);
+			$nativeValueToWrite = $scope->getNativeType($assignedExpr);
+			$varType = $scope->getType($var);
+			$varNativeType = $scope->getNativeType($var);
+
+			$offsetValueType = $varType;
+			$offsetNativeValueType = $varNativeType;
+			$offsetValueTypeStack = [$offsetValueType];
+			$offsetValueNativeTypeStack = [$offsetNativeValueType];
+			foreach (array_slice($offsetTypes, 0, -1) as $offsetType) {
+				$offsetValueType = $offsetValueType->getOffsetValueType($offsetType);
+				$offsetValueTypeStack[] = $offsetValueType;
+			}
+			foreach (array_slice($offsetNativeTypes, 0, -1) as $offsetNativeType) {
+				$offsetNativeValueType = $offsetNativeValueType->getOffsetValueType($offsetNativeType);
+				$offsetValueNativeTypeStack[] = $offsetNativeValueType;
+			}
+
+			foreach (array_reverse($offsetTypes) as $offsetType) {
+				/** @var Type $offsetValueType */
+				$offsetValueType = array_pop($offsetValueTypeStack);
+				$valueToWrite = $offsetValueType->setExistingOffsetValueType($offsetType, $valueToWrite);
+			}
+			foreach (array_reverse($offsetNativeTypes) as $offsetNativeType) {
+				/** @var Type $offsetNativeValueType */
+				$offsetNativeValueType = array_pop($offsetValueNativeTypeStack);
+				$nativeValueToWrite = $offsetNativeValueType->setExistingOffsetValueType($offsetNativeType, $nativeValueToWrite);
+			}
+
+			if ($var instanceof Variable && is_string($var->name)) {
+				$nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+				$scope = $scope->assignVariable($var->name, $valueToWrite, $nativeValueToWrite, TrinaryLogic::createYes());
+			} else {
+				if ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
+					$nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
+				}
+				$scope = $scope->assignExpression(
+					$var,
+					$valueToWrite,
+					$nativeValueToWrite,
+				);
+			}
+		}
+
+		return new ExpressionResult($scope, $hasYield, $throwPoints, $impurePoints);
+	}
+
+	/**
+	 * @param list<Type|null> $offsetTypes
+	 */
+	private function produceArrayDimFetchAssignValueToWrite(array $offsetTypes, Type $offsetValueType, Type $valueToWrite): Type
+	{
+		$offsetValueTypeStack = [$offsetValueType];
+		foreach (array_slice($offsetTypes, 0, -1) as $offsetType) {
+			if ($offsetType === null) {
+				$offsetValueType = new ConstantArrayType([], []);
+
+			} else {
+				$offsetValueType = $offsetValueType->getOffsetValueType($offsetType);
+				if ($offsetValueType instanceof ErrorType) {
+					$offsetValueType = new ConstantArrayType([], []);
+				}
+			}
+
+			$offsetValueTypeStack[] = $offsetValueType;
+		}
+
+		foreach (array_reverse($offsetTypes) as $i => $offsetType) {
+			/** @var Type $offsetValueType */
+			$offsetValueType = array_pop($offsetValueTypeStack);
+			if (
+				!$offsetValueType instanceof MixedType
+				&& !$offsetValueType->isConstantArray()->yes()
+			) {
+				$types = [
+					new ArrayType(new MixedType(), new MixedType()),
+					new ObjectType(ArrayAccess::class),
+					new NullType(),
+				];
+				if ($offsetType !== null && $offsetType->isInteger()->yes()) {
+					$types[] = new StringType();
+				}
+				$offsetValueType = TypeCombinator::intersect($offsetValueType, TypeCombinator::union(...$types));
+			}
+			$valueToWrite = $offsetValueType->setOffsetValueType($offsetType, $valueToWrite, $i === 0);
+		}
+
+		return $valueToWrite;
+	}
+
+	private function unwrapAssign(Expr $expr): Expr
+	{
+		if ($expr instanceof Assign) {
+			return $this->unwrapAssign($expr->expr);
+		}
+
+		return $expr;
+	}
+
+	/**
+	 * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function processSureTypesForConditionalExpressionsAfterAssign(Scope $scope, string $variableName, array $conditionalExpressions, SpecifiedTypes $specifiedTypes, Type $variableType): array
+	{
+		foreach ($specifiedTypes->getSureTypes() as $exprString => [$expr, $exprType]) {
+			if (!$expr instanceof Variable) {
+				continue;
+			}
+			if (!is_string($expr->name)) {
+				continue;
+			}
+
+			if ($expr->name === $variableName) {
+				continue;
+			}
+
+			if (!isset($conditionalExpressions[$exprString])) {
+				$conditionalExpressions[$exprString] = [];
+			}
+
+			$holder = new ConditionalExpressionHolder([
+				'$' . $variableName => ExpressionTypeHolder::createYes(new Variable($variableName), $variableType),
+			], ExpressionTypeHolder::createYes(
+				$expr,
+				TypeCombinator::intersect($scope->getType($expr), $exprType),
+			));
+			$conditionalExpressions[$exprString][$holder->getKey()] = $holder;
+		}
+
+		return $conditionalExpressions;
+	}
+
+	/**
+	 * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function processSureNotTypesForConditionalExpressionsAfterAssign(Scope $scope, string $variableName, array $conditionalExpressions, SpecifiedTypes $specifiedTypes, Type $variableType): array
+	{
+		foreach ($specifiedTypes->getSureNotTypes() as $exprString => [$expr, $exprType]) {
+			if (!$expr instanceof Variable) {
+				continue;
+			}
+			if (!is_string($expr->name)) {
+				continue;
+			}
+
+			if ($expr->name === $variableName) {
+				continue;
+			}
+
+			if (!isset($conditionalExpressions[$exprString])) {
+				$conditionalExpressions[$exprString] = [];
+			}
+
+			$holder = new ConditionalExpressionHolder([
+				'$' . $variableName => ExpressionTypeHolder::createYes(new Variable($variableName), $variableType),
+			], ExpressionTypeHolder::createYes(
+				$expr,
+				TypeCombinator::remove($scope->getType($expr), $exprType),
+			));
+			$conditionalExpressions[$exprString][$holder->getKey()] = $holder;
+		}
+
+		return $conditionalExpressions;
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processStmtVarAnnotation(MutatingScope $scope, Node\Stmt $stmt, ?Expr $defaultExpr, callable $nodeCallback): MutatingScope
+	{
+		$function = $scope->getFunction();
+		$variableLessTags = [];
+
+		foreach ($stmt->getComments() as $comment) {
+			if (!$comment instanceof Doc) {
+				continue;
+			}
+
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$scope->getFile(),
+				$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+				$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+				$function !== null ? $function->getName() : null,
+				$comment->getText(),
+			);
+
+			$assignedVariable = null;
+			if (
+				$stmt instanceof Node\Stmt\Expression
+				&& ($stmt->expr instanceof Assign || $stmt->expr instanceof AssignRef)
+				&& $stmt->expr->var instanceof Variable
+				&& is_string($stmt->expr->var->name)
+			) {
+				$assignedVariable = $stmt->expr->var->name;
+			}
+
+			foreach ($resolvedPhpDoc->getVarTags() as $name => $varTag) {
+				if (is_int($name)) {
+					$variableLessTags[] = $varTag;
+					continue;
+				}
+
+				if ($name === $assignedVariable) {
+					continue;
+				}
+
+				$certainty = $scope->hasVariableType($name);
+				if ($certainty->no()) {
+					continue;
+				}
+
+				if ($scope->isInClass() && $scope->getFunction() === null) {
+					continue;
+				}
+
+				if ($scope->canAnyVariableExist()) {
+					$certainty = TrinaryLogic::createYes();
+				}
+
+				$variableNode = new Variable($name, $stmt->getAttributes());
+				$originalType = $scope->getVariableType($name);
+				if (!$originalType->equals($varTag->getType())) {
+					$nodeCallback(new VarTagChangedExpressionTypeNode($varTag, $variableNode), $scope);
+				}
+
+				$scope = $scope->assignVariable(
+					$name,
+					$varTag->getType(),
+					$scope->getNativeType($variableNode),
+					$certainty,
+				);
+			}
+		}
+
+		if (count($variableLessTags) === 1 && $defaultExpr !== null) {
+			$originalType = $scope->getType($defaultExpr);
+			$varTag = $variableLessTags[0];
+			if (!$originalType->equals($varTag->getType())) {
+				$nodeCallback(new VarTagChangedExpressionTypeNode($varTag, $defaultExpr), $scope);
+			}
+			$scope = $scope->assignExpression($defaultExpr, $varTag->getType(), new MixedType());
+		}
+
+		return $scope;
+	}
+
+	/**
+	 * @param array<int, string> $variableNames
+	 */
+	private function processVarAnnotation(MutatingScope $scope, array $variableNames, Node\Stmt $node, bool &$changed = false): MutatingScope
+	{
+		$function = $scope->getFunction();
+		$varTags = [];
+		foreach ($node->getComments() as $comment) {
+			if (!$comment instanceof Doc) {
+				continue;
+			}
+
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$scope->getFile(),
+				$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+				$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+				$function !== null ? $function->getName() : null,
+				$comment->getText(),
+			);
+			foreach ($resolvedPhpDoc->getVarTags() as $key => $varTag) {
+				$varTags[$key] = $varTag;
+			}
+		}
+
+		if (count($varTags) === 0) {
+			return $scope;
+		}
+
+		foreach ($variableNames as $variableName) {
+			if (!isset($varTags[$variableName])) {
+				continue;
+			}
+
+			$variableType = $varTags[$variableName]->getType();
+			$changed = true;
+			$scope = $scope->assignVariable($variableName, $variableType, new MixedType(), TrinaryLogic::createYes());
+		}
+
+		if (count($variableNames) === 1 && count($varTags) === 1 && isset($varTags[0])) {
+			$variableType = $varTags[0]->getType();
+			$changed = true;
+			$scope = $scope->assignVariable($variableNames[0], $variableType, new MixedType(), TrinaryLogic::createYes());
+		}
+
+		return $scope;
+	}
+
+	private function enterForeach(MutatingScope $scope, MutatingScope $originalScope, Foreach_ $stmt): MutatingScope
+	{
+		if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
+			$scope = $this->processVarAnnotation($scope, [$stmt->expr->name], $stmt);
+		}
+		$iterateeType = $originalScope->getType($stmt->expr);
+		if (
+			($stmt->valueVar instanceof Variable && is_string($stmt->valueVar->name))
+			&& ($stmt->keyVar === null || ($stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)))
+		) {
+			$keyVarName = null;
+			if ($stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)) {
+				$keyVarName = $stmt->keyVar->name;
+			}
+			$scope = $scope->enterForeach(
+				$originalScope,
+				$stmt->expr,
+				$stmt->valueVar->name,
+				$keyVarName,
+			);
+			$vars = [$stmt->valueVar->name];
+			if ($keyVarName !== null) {
+				$vars[] = $keyVarName;
+			}
+		} else {
+			$scope = $this->processAssignVar(
+				$scope,
+				$stmt,
+				$stmt->valueVar,
+				new GetIterableValueTypeExpr($stmt->expr),
+				static function (): void {
+				},
+				ExpressionContext::createDeep(),
+				static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+				true,
+			)->getScope();
+			$vars = $this->getAssignedVariables($stmt->valueVar);
+			if (
+				$stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)
+			) {
+				$scope = $scope->enterForeachKey($originalScope, $stmt->expr, $stmt->keyVar->name);
+				$vars[] = $stmt->keyVar->name;
+			} elseif ($stmt->keyVar !== null) {
+				$scope = $this->processAssignVar(
+					$scope,
+					$stmt,
+					$stmt->keyVar,
+					new GetIterableKeyTypeExpr($stmt->expr),
+					static function (): void {
+					},
+					ExpressionContext::createDeep(),
+					static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, [], []),
+					true,
+				)->getScope();
+				$vars = array_merge($vars, $this->getAssignedVariables($stmt->keyVar));
+			}
+		}
+
+		$constantArrays = $iterateeType->getConstantArrays();
+		if (
+			$stmt->getDocComment() === null
+			&& $iterateeType->isConstantArray()->yes()
+			&& count($constantArrays) === 1
+			&& $stmt->valueVar instanceof Variable && is_string($stmt->valueVar->name)
+			&& $stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)
+		) {
+			$valueConditionalHolders = [];
+			$arrayDimFetchConditionalHolders = [];
+			foreach ($constantArrays[0]->getKeyTypes() as $i => $keyType) {
+				$valueType = $constantArrays[0]->getValueTypes()[$i];
+				$holder = new ConditionalExpressionHolder([
+					'$' . $stmt->keyVar->name => ExpressionTypeHolder::createYes(new Variable($stmt->keyVar->name), $keyType),
+				], new ExpressionTypeHolder($stmt->valueVar, $valueType, TrinaryLogic::createYes()));
+				$valueConditionalHolders[$holder->getKey()] = $holder;
+				$arrayDimFetchHolder = new ConditionalExpressionHolder([
+					'$' . $stmt->keyVar->name => ExpressionTypeHolder::createYes(new Variable($stmt->keyVar->name), $keyType),
+				], new ExpressionTypeHolder(new ArrayDimFetch($stmt->expr, $stmt->keyVar), $valueType, TrinaryLogic::createYes()));
+				$arrayDimFetchConditionalHolders[$arrayDimFetchHolder->getKey()] = $arrayDimFetchHolder;
+			}
+
+			$scope = $scope->addConditionalExpressions(
+				'$' . $stmt->valueVar->name,
+				$valueConditionalHolders,
+			);
+			if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
+				$scope = $scope->addConditionalExpressions(
+					sprintf('$%s[$%s]', $stmt->expr->name, $stmt->keyVar->name),
+					$arrayDimFetchConditionalHolders,
+				);
+			}
+		}
+
+		return $this->processVarAnnotation($scope, $vars, $stmt);
+	}
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processTraitUse(Node\Stmt\TraitUse $node, MutatingScope $classScope, callable $nodeCallback): void
+	{
+		$parentTraitNames = [];
+		$parent = $classScope->getParentScope();
+		while ($parent !== null) {
+			if ($parent->isInTrait()) {
+				$parentTraitNames[] = $parent->getTraitReflection()->getName();
+			}
+			$parent = $parent->getParentScope();
+		}
+
+		foreach ($node->traits as $trait) {
+			$traitName = (string) $trait;
+			if (in_array($traitName, $parentTraitNames, true)) {
+				continue;
+			}
+			if (!$this->reflectionProvider->hasClass($traitName)) {
+				continue;
+			}
+			$traitReflection = $this->reflectionProvider->getClass($traitName);
+			$traitFileName = $traitReflection->getFileName();
+			if ($traitFileName === null) {
+				continue; // trait from eval or from PHP itself
+			}
+			$fileName = $this->fileHelper->normalizePath($traitFileName);
+			if (!isset($this->analysedFiles[$fileName])) {
+				continue;
+			}
+			$adaptations = [];
+			foreach ($node->adaptations as $adaptation) {
+				if ($adaptation->trait === null) {
+					$adaptations[] = $adaptation;
+					continue;
+				}
+				if ($adaptation->trait->toLowerString() !== $trait->toLowerString()) {
+					continue;
+				}
+
+				$adaptations[] = $adaptation;
+			}
+			$parserNodes = $this->parser->parseFile($fileName);
+			$this->processNodesForTraitUse($parserNodes, $traitReflection, $classScope, $adaptations, $nodeCallback);
+		}
+	}
+
+	/**
+	 * @param Node[]|Node|scalar|null $node
+	 * @param Node\Stmt\TraitUseAdaptation[] $adaptations
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processNodesForTraitUse($node, ClassReflection $traitReflection, MutatingScope $scope, array $adaptations, callable $nodeCallback): void
+	{
+		if ($node instanceof Node) {
+			if ($node instanceof Node\Stmt\Trait_ && $traitReflection->getName() === (string) $node->namespacedName && $traitReflection->getNativeReflection()->getStartLine() === $node->getStartLine()) {
+				$methodModifiers = [];
+				$methodNames = [];
+				foreach ($adaptations as $adaptation) {
+					if (!$adaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
+						continue;
+					}
+
+					$methodName = $adaptation->method->toLowerString();
+					if ($adaptation->newModifier !== null) {
+						$methodModifiers[$methodName] = $adaptation->newModifier;
+					}
+
+					if ($adaptation->newName === null) {
+						continue;
+					}
+
+					$methodNames[$methodName] = $adaptation->newName;
+				}
+
+				$stmts = $node->stmts;
+				foreach ($stmts as $i => $stmt) {
+					if (!$stmt instanceof Node\Stmt\ClassMethod) {
+						continue;
+					}
+					$methodName = $stmt->name->toLowerString();
+					$methodAst = clone $stmt;
+					$stmts[$i] = $methodAst;
+					if (array_key_exists($methodName, $methodModifiers)) {
+						$methodAst->flags = ($methodAst->flags & ~ Modifiers::VISIBILITY_MASK) | $methodModifiers[$methodName];
+					}
+
+					if (!array_key_exists($methodName, $methodNames)) {
+						continue;
+					}
+
+					$methodAst->setAttribute('originalTraitMethodName', $methodAst->name->toLowerString());
+					$methodAst->name = $methodNames[$methodName];
+				}
+
+				if (!$scope->isInClass()) {
+					throw new ShouldNotHappenException();
+				}
+				$traitScope = $scope->enterTrait($traitReflection);
+				$nodeCallback(new InTraitNode($node, $traitReflection, $scope->getClassReflection()), $traitScope);
+				$this->processStmtNodes($node, $stmts, $traitScope, $nodeCallback, StatementContext::createTopLevel());
+				return;
+			}
+			if ($node instanceof Node\Stmt\ClassLike) {
+				return;
+			}
+			if ($node instanceof Node\FunctionLike) {
+				return;
+			}
+			foreach ($node->getSubNodeNames() as $subNodeName) {
+				$subNode = $node->{$subNodeName};
+				$this->processNodesForTraitUse($subNode, $traitReflection, $scope, $adaptations, $nodeCallback);
+			}
+		} elseif (is_array($node)) {
+			foreach ($node as $subNode) {
+				$this->processNodesForTraitUse($subNode, $traitReflection, $scope, $adaptations, $nodeCallback);
+			}
+		}
+	}
+
+	private function processCalledMethod(MethodReflection $methodReflection): ?MutatingScope
+	{
+		$declaringClass = $methodReflection->getDeclaringClass();
+		if ($declaringClass->isAnonymous()) {
+			return null;
+		}
+		if ($declaringClass->getFileName() === null) {
+			return null;
+		}
+
+		$stackName = sprintf('%s::%s', $declaringClass->getName(), $methodReflection->getName());
+		if (array_key_exists($stackName, $this->calledMethodResults)) {
+			return $this->calledMethodResults[$stackName];
+		}
+
+		if (array_key_exists($stackName, $this->calledMethodStack)) {
+			return null;
+		}
+
+		if (count($this->calledMethodStack) > 0) {
+			return null;
+		}
+
+		$this->calledMethodStack[$stackName] = true;
+
+		$fileName = $this->fileHelper->normalizePath($declaringClass->getFileName());
+		if (!isset($this->analysedFiles[$fileName])) {
+			return null;
+		}
+		$parserNodes = $this->parser->parseFile($fileName);
+
+		$returnStatement = null;
+		$this->processNodesForCalledMethod($parserNodes, $fileName, $methodReflection, static function (Node $node, Scope $scope) use ($methodReflection, &$returnStatement): void {
+			if (!$node instanceof MethodReturnStatementsNode) {
+				return;
+			}
+
+			if ($node->getClassReflection()->getName() !== $methodReflection->getDeclaringClass()->getName()) {
+				return;
+			}
+
+			if ($returnStatement !== null) {
+				return;
+			}
+
+			$returnStatement = $node;
+		});
+
+		$calledMethodEndScope = null;
+		if ($returnStatement !== null) {
+			foreach ($returnStatement->getExecutionEnds() as $executionEnd) {
+				$statementResult = $executionEnd->getStatementResult();
+				$endNode = $executionEnd->getNode();
+				if ($endNode instanceof Node\Stmt\Expression) {
+					$exprType = $statementResult->getScope()->getType($endNode->expr);
+					if ($exprType instanceof NeverType && $exprType->isExplicit()) {
+						continue;
+					}
+				}
+				if ($calledMethodEndScope === null) {
+					$calledMethodEndScope = $statementResult->getScope();
+					continue;
+				}
+
+				$calledMethodEndScope = $calledMethodEndScope->mergeWith($statementResult->getScope());
+			}
+			foreach ($returnStatement->getReturnStatements() as $statement) {
+				if ($calledMethodEndScope === null) {
+					$calledMethodEndScope = $statement->getScope();
+					continue;
+				}
+
+				$calledMethodEndScope = $calledMethodEndScope->mergeWith($statement->getScope());
+			}
+		}
+
+		unset($this->calledMethodStack[$stackName]);
+
+		$this->calledMethodResults[$stackName] = $calledMethodEndScope;
+
+		return $calledMethodEndScope;
+	}
+
+	/**
+	 * @param Node[]|Node|scalar|null $node
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	private function processNodesForCalledMethod($node, string $fileName, MethodReflection $methodReflection, callable $nodeCallback): void
+	{
+		if ($node instanceof Node) {
+			$declaringClass = $methodReflection->getDeclaringClass();
+			if (
+				$node instanceof Node\Stmt\Class_
+				&& $node->namespacedName !== null
+				&& $declaringClass->getName() === (string) $node->namespacedName
+				&& $declaringClass->getNativeReflection()->getStartLine() === $node->getStartLine()
+			) {
+
+				$stmts = $node->stmts;
+				foreach ($stmts as $stmt) {
+					if (!$stmt instanceof Node\Stmt\ClassMethod) {
+						continue;
+					}
+
+					if ($stmt->name->toString() !== $methodReflection->getName()) {
+						continue;
+					}
+
+					if ($stmt->getEndLine() - $stmt->getStartLine() > 50) {
+						continue;
+					}
+
+					$scope = $this->scopeFactory->create(ScopeContext::create($fileName))->enterClass($declaringClass);
+					$this->processStmtNode($stmt, $scope, $nodeCallback, StatementContext::createTopLevel());
+				}
+				return;
+			}
+			if ($node instanceof Node\Stmt\ClassLike) {
+				return;
+			}
+			if ($node instanceof Node\FunctionLike) {
+				return;
+			}
+			foreach ($node->getSubNodeNames() as $subNodeName) {
+				$subNode = $node->{$subNodeName};
+				$this->processNodesForCalledMethod($subNode, $fileName, $methodReflection, $nodeCallback);
+			}
+		} elseif (is_array($node)) {
+			foreach ($node as $subNode) {
+				$this->processNodesForCalledMethod($subNode, $fileName, $methodReflection, $nodeCallback);
+			}
+		}
+	}
+
+	/**
+	 * @return array{TemplateTypeMap, array<string, Type>, array<string, bool>, array<string, Type>, ?Type, ?Type, ?string, bool, bool, bool, bool|null, bool, bool, string|null, Assertions, ?Type, array<string, Type>, array<(string|int), VarTag>, bool}
+	 */
+	public function getPhpDocs(Scope $scope, Node\FunctionLike|Node\Stmt\Property $node): array
+	{
+		$templateTypeMap = TemplateTypeMap::createEmpty();
+		$phpDocParameterTypes = [];
+		$phpDocImmediatelyInvokedCallableParameters = [];
+		$phpDocClosureThisTypeParameters = [];
+		$phpDocReturnType = null;
+		$phpDocThrowType = null;
+		$deprecatedDescription = null;
+		$isDeprecated = false;
+		$isInternal = false;
+		$isFinal = false;
+		$isPure = null;
+		$isAllowedPrivateMutation = false;
+		$acceptsNamedArguments = true;
+		$isReadOnly = $scope->isInClass() && $scope->getClassReflection()->isImmutable();
+		$asserts = Assertions::createEmpty();
+		$selfOutType = null;
+		$docComment = $node->getDocComment() !== null
+			? $node->getDocComment()->getText()
+			: null;
+
+		$file = $scope->getFile();
+		$class = $scope->isInClass() ? $scope->getClassReflection()->getName() : null;
+		$trait = $scope->isInTrait() ? $scope->getTraitReflection()->getName() : null;
+		$resolvedPhpDoc = null;
+		$functionName = null;
+		$phpDocParameterOutTypes = [];
+
+		if ($node instanceof Node\Stmt\ClassMethod) {
+			if (!$scope->isInClass()) {
+				throw new ShouldNotHappenException();
+			}
+			$functionName = $node->name->name;
+			$positionalParameterNames = array_map(static function (Node\Param $param): string {
+				if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $param->var->name;
+			}, $node->getParams());
+			$resolvedPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForMethod(
+				$docComment,
+				$file,
+				$scope->getClassReflection(),
+				$trait,
+				$node->name->name,
+				$positionalParameterNames,
+			);
+
+			if ($node->name->toLowerString() === '__construct') {
+				foreach ($node->params as $param) {
+					if ($param->flags === 0) {
+						continue;
+					}
+
+					if ($param->getDocComment() === null) {
+						continue;
+					}
+
+					if (
+						!$param->var instanceof Variable
+						|| !is_string($param->var->name)
+					) {
+						throw new ShouldNotHappenException();
+					}
+
+					$paramPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+						$file,
+						$class,
+						$trait,
+						'__construct',
+						$param->getDocComment()->getText(),
+					);
+					$varTags = $paramPhpDoc->getVarTags();
+					if (isset($varTags[0]) && count($varTags) === 1) {
+						$phpDocType = $varTags[0]->getType();
+					} elseif (isset($varTags[$param->var->name])) {
+						$phpDocType = $varTags[$param->var->name]->getType();
+					} else {
+						continue;
+					}
+
+					$phpDocParameterTypes[$param->var->name] = $phpDocType;
+				}
+			}
+		} elseif ($node instanceof Node\Stmt\Function_) {
+			$functionName = trim($scope->getNamespace() . '\\' . $node->name->name, '\\');
+		} elseif ($node instanceof Node\PropertyHook) {
+			$propertyName = $node->getAttribute('propertyName');
+			if ($propertyName !== null) {
+				$functionName = sprintf('$%s::%s', $propertyName, $node->name->toString());
+			}
+		}
+
+		if ($docComment !== null && $resolvedPhpDoc === null) {
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				$class,
+				$trait,
+				$functionName,
+				$docComment,
+			);
+		}
+
+		$varTags = [];
+		if ($resolvedPhpDoc !== null) {
+			$templateTypeMap = $resolvedPhpDoc->getTemplateTypeMap();
+			$phpDocImmediatelyInvokedCallableParameters = $resolvedPhpDoc->getParamsImmediatelyInvokedCallable();
+			foreach ($resolvedPhpDoc->getParamTags() as $paramName => $paramTag) {
+				if (array_key_exists($paramName, $phpDocParameterTypes)) {
+					continue;
+				}
+				$paramType = $paramTag->getType();
+				if ($scope->isInClass()) {
+					$paramType = $this->transformStaticType($scope->getClassReflection(), $paramType);
+				}
+				$phpDocParameterTypes[$paramName] = $paramType;
+			}
+			foreach ($resolvedPhpDoc->getParamClosureThisTags() as $paramName => $paramClosureThisTag) {
+				if (array_key_exists($paramName, $phpDocClosureThisTypeParameters)) {
+					continue;
+				}
+				$paramClosureThisType = $paramClosureThisTag->getType();
+				if ($scope->isInClass()) {
+					$paramClosureThisType = $this->transformStaticType($scope->getClassReflection(), $paramClosureThisType);
+				}
+				$phpDocClosureThisTypeParameters[$paramName] = $paramClosureThisType;
+			}
+
+			foreach ($resolvedPhpDoc->getParamOutTags() as $paramName => $paramOutTag) {
+				$phpDocParameterOutTypes[$paramName] = $paramOutTag->getType();
+			}
+			if ($node instanceof Node\FunctionLike) {
+				$nativeReturnType = $scope->getFunctionType($node->getReturnType(), false, false);
+				$phpDocReturnType = $this->getPhpDocReturnType($resolvedPhpDoc, $nativeReturnType);
+				if ($phpDocReturnType !== null && $scope->isInClass()) {
+					$phpDocReturnType = $this->transformStaticType($scope->getClassReflection(), $phpDocReturnType);
+				}
+			}
+			$phpDocThrowType = $resolvedPhpDoc->getThrowsTag() !== null ? $resolvedPhpDoc->getThrowsTag()->getType() : null;
+			$deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag() !== null ? $resolvedPhpDoc->getDeprecatedTag()->getMessage() : null;
+			$isDeprecated = $resolvedPhpDoc->isDeprecated();
+			$isInternal = $resolvedPhpDoc->isInternal();
+			$isFinal = $resolvedPhpDoc->isFinal();
+			$isPure = $resolvedPhpDoc->isPure();
+			$isAllowedPrivateMutation = $resolvedPhpDoc->isAllowedPrivateMutation();
+			$acceptsNamedArguments = $resolvedPhpDoc->acceptsNamedArguments();
+			if ($acceptsNamedArguments && $scope->isInClass()) {
+				$acceptsNamedArguments = $scope->getClassReflection()->acceptsNamedArguments();
+			}
+			$isReadOnly = $isReadOnly || $resolvedPhpDoc->isReadOnly();
+			$asserts = Assertions::createFromResolvedPhpDocBlock($resolvedPhpDoc);
+			$selfOutType = $resolvedPhpDoc->getSelfOutTag() !== null ? $resolvedPhpDoc->getSelfOutTag()->getType() : null;
+			$varTags = $resolvedPhpDoc->getVarTags();
+		}
+
+		return [$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, $isFinal, $isPure, $acceptsNamedArguments, $isReadOnly, $docComment, $asserts, $selfOutType, $phpDocParameterOutTypes, $varTags, $isAllowedPrivateMutation];
+	}
+
+	private function transformStaticType(ClassReflection $declaringClass, Type $type): Type
+	{
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($declaringClass): Type {
+			if ($type instanceof StaticType) {
+				$changedType = $type->changeBaseClass($declaringClass);
+				if ($declaringClass->isFinal() && !$type instanceof ThisType) {
+					$changedType = $changedType->getStaticObjectType();
+				}
+				return $traverse($changedType);
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	private function getPhpDocReturnType(ResolvedPhpDocBlock $resolvedPhpDoc, Type $nativeReturnType): ?Type
+	{
+		$returnTag = $resolvedPhpDoc->getReturnTag();
+
+		if ($returnTag === null) {
+			return null;
+		}
+
+		$phpDocReturnType = $returnTag->getType();
+
+		if ($returnTag->isExplicit()) {
+			return $phpDocReturnType;
+		}
+
+		if ($nativeReturnType->isSuperTypeOf(TemplateTypeHelper::resolveToBounds($phpDocReturnType))->yes()) {
+			return $phpDocReturnType;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<Node> $nodes
+	 * @return list<Node\Stmt>
+	 */
+	private function getNextUnreachableStatements(array $nodes, bool $earlyBinding): array
+	{
+		$stmts = [];
+		$isPassedUnreachableStatement = false;
+		foreach ($nodes as $node) {
+			if ($earlyBinding && ($node instanceof Node\Stmt\Function_ || $node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\HaltCompiler)) {
+				continue;
+			}
+			if ($isPassedUnreachableStatement && $node instanceof Node\Stmt) {
+				$stmts[] = $node;
+				continue;
+			}
+			if ($node instanceof Node\Stmt\Nop) {
+				continue;
+			}
+			if (!$node instanceof Node\Stmt) {
+				continue;
+			}
+			$stmts[] = $node;
+			$isPassedUnreachableStatement = true;
+		}
+		return $stmts;
+	}
+
+}
diff --git a/src/Analyser/NullsafeOperatorHelper.php b/src/Analyser/NullsafeOperatorHelper.php
new file mode 100644
index 00000000..31609519
--- /dev/null
+++ b/src/Analyser/NullsafeOperatorHelper.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Type\TypeCombinator;
+
+final class NullsafeOperatorHelper
+{
+
+	public static function getNullsafeShortcircuitedExprRespectingScope(Scope $scope, Expr $expr): Expr
+	{
+		if (!TypeCombinator::containsNull($scope->getType($expr))) {
+			// We're in most likely in context of a null-safe operator ($scope->moreSpecificType is defined for $expr)
+			// Modifying the expression would not bring any value or worse ruin the context information
+			return $expr;
+		}
+
+		return self::getNullsafeShortcircuitedExpr($expr);
+	}
+
+	/**
+	 * @internal Use NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope
+	 */
+	public static function getNullsafeShortcircuitedExpr(Expr $expr): Expr
+	{
+		if ($expr instanceof Expr\NullsafeMethodCall) {
+			return new Expr\MethodCall(self::getNullsafeShortcircuitedExpr($expr->var), $expr->name, $expr->args);
+		}
+
+		if ($expr instanceof Expr\MethodCall) {
+			$var = self::getNullsafeShortcircuitedExpr($expr->var);
+			if ($expr->var === $var) {
+				return $expr;
+			}
+
+			return new Expr\MethodCall($var, $expr->name, $expr->getArgs());
+		}
+
+		if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
+			$class = self::getNullsafeShortcircuitedExpr($expr->class);
+			if ($expr->class === $class) {
+				return $expr;
+			}
+
+			return new Expr\StaticCall($class, $expr->name, $expr->getArgs());
+		}
+
+		if ($expr instanceof Expr\ArrayDimFetch) {
+			$var = self::getNullsafeShortcircuitedExpr($expr->var);
+			if ($expr->var === $var) {
+				return $expr;
+			}
+
+			return new Expr\ArrayDimFetch($var, $expr->dim);
+		}
+
+		if ($expr instanceof Expr\NullsafePropertyFetch) {
+			return new Expr\PropertyFetch(self::getNullsafeShortcircuitedExpr($expr->var), $expr->name);
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			$var = self::getNullsafeShortcircuitedExpr($expr->var);
+			if ($expr->var === $var) {
+				return $expr;
+			}
+
+			return new Expr\PropertyFetch($var, $expr->name);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			$class = self::getNullsafeShortcircuitedExpr($expr->class);
+			if ($expr->class === $class) {
+				return $expr;
+			}
+
+			return new Expr\StaticPropertyFetch($class, $expr->name);
+		}
+
+		return $expr;
+	}
+
+}
diff --git a/src/Analyser/OutOfClassScope.php b/src/Analyser/OutOfClassScope.php
new file mode 100644
index 00000000..cc9dbd87
--- /dev/null
+++ b/src/Analyser/OutOfClassScope.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\PropertyReflection;
+
+final class OutOfClassScope implements ClassMemberAccessAnswerer
+{
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function isInClass(): bool
+	{
+		return false;
+	}
+
+	public function getClassReflection(): ?ClassReflection
+	{
+		return null;
+	}
+
+	public function canAccessProperty(PropertyReflection $propertyReflection): bool
+	{
+		return $propertyReflection->isPublic();
+	}
+
+	public function canReadProperty(ExtendedPropertyReflection $propertyReflection): bool
+	{
+		return $propertyReflection->isPublic();
+	}
+
+	public function canWriteProperty(ExtendedPropertyReflection $propertyReflection): bool
+	{
+		return $propertyReflection->isPublic()
+			&& !$propertyReflection->isProtectedSet()
+			&& !$propertyReflection->isPrivateSet();
+	}
+
+	public function canCallMethod(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->isPublic();
+	}
+
+	public function canAccessConstant(ClassConstantReflection $constantReflection): bool
+	{
+		return $constantReflection->isPublic();
+	}
+
+}
diff --git a/src/Analyser/ProcessClosureResult.php b/src/Analyser/ProcessClosureResult.php
new file mode 100644
index 00000000..8d4e0ec3
--- /dev/null
+++ b/src/Analyser/ProcessClosureResult.php
@@ -0,0 +1,54 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Node\InvalidateExprNode;
+
+final class ProcessClosureResult
+{
+
+	/**
+	 * @param ThrowPoint[] $throwPoints
+	 * @param ImpurePoint[] $impurePoints
+	 * @param InvalidateExprNode[] $invalidateExpressions
+	 */
+	public function __construct(
+		private MutatingScope $scope,
+		private array $throwPoints,
+		private array $impurePoints,
+		private array $invalidateExpressions,
+	)
+	{
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+	/**
+	 * @return ThrowPoint[]
+	 */
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	/**
+	 * @return ImpurePoint[]
+	 */
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	/**
+	 * @return InvalidateExprNode[]
+	 */
+	public function getInvalidateExpressions(): array
+	{
+		return $this->invalidateExpressions;
+	}
+
+}
diff --git a/src/Analyser/ResultCache/ResultCache.php b/src/Analyser/ResultCache/ResultCache.php
new file mode 100644
index 00000000..3d2c5e5f
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCache.php
@@ -0,0 +1,136 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\FileAnalyserResult;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Dependency\RootExportedNode;
+
+/**
+ * @phpstan-import-type LinesToIgnore from FileAnalyserResult
+ */
+final class ResultCache
+{
+
+	/**
+	 * @param string[] $filesToAnalyse
+	 * @param mixed[] $meta
+	 * @param array<string, list<Error>> $errors
+	 * @param array<string, list<Error>> $locallyIgnoredErrors
+	 * @param array<string, LinesToIgnore> $linesToIgnore
+	 * @param array<string, LinesToIgnore> $unmatchedLineIgnores
+	 * @param array<string, array<CollectedData>> $collectedData
+	 * @param array<string, array<string>> $dependencies
+	 * @param array<string, array<RootExportedNode>> $exportedNodes
+	 * @param array<string, array{string, bool, string}> $projectExtensionFiles
+	 */
+	public function __construct(
+		private array $filesToAnalyse,
+		private bool $fullAnalysis,
+		private int $lastFullAnalysisTime,
+		private array $meta,
+		private array $errors,
+		private array $locallyIgnoredErrors,
+		private array $linesToIgnore,
+		private array $unmatchedLineIgnores,
+		private array $collectedData,
+		private array $dependencies,
+		private array $exportedNodes,
+		private array $projectExtensionFiles,
+	)
+	{
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getFilesToAnalyse(): array
+	{
+		return $this->filesToAnalyse;
+	}
+
+	public function isFullAnalysis(): bool
+	{
+		return $this->fullAnalysis;
+	}
+
+	public function getLastFullAnalysisTime(): int
+	{
+		return $this->lastFullAnalysisTime;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMeta(): array
+	{
+		return $this->meta;
+	}
+
+	/**
+	 * @return array<string, list<Error>>
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+	/**
+	 * @return array<string, list<Error>>
+	 */
+	public function getLocallyIgnoredErrors(): array
+	{
+		return $this->locallyIgnoredErrors;
+	}
+
+	/**
+	 * @return array<string, LinesToIgnore>
+	 */
+	public function getLinesToIgnore(): array
+	{
+		return $this->linesToIgnore;
+	}
+
+	/**
+	 * @return array<string, LinesToIgnore>
+	 */
+	public function getUnmatchedLineIgnores(): array
+	{
+		return $this->unmatchedLineIgnores;
+	}
+
+	/**
+	 * @return array<string, array<CollectedData>>
+	 */
+	public function getCollectedData(): array
+	{
+		return $this->collectedData;
+	}
+
+	/**
+	 * @return array<string, array<string>>
+	 */
+	public function getDependencies(): array
+	{
+		return $this->dependencies;
+	}
+
+	/**
+	 * @return array<string, array<RootExportedNode>>
+	 */
+	public function getExportedNodes(): array
+	{
+		return $this->exportedNodes;
+	}
+
+	/**
+	 * @return array<string, array{string, bool, string}>
+	 */
+	public function getProjectExtensionFiles(): array
+	{
+		return $this->projectExtensionFiles;
+	}
+
+}
diff --git a/src/Analyser/ResultCache/ResultCacheClearer.php b/src/Analyser/ResultCache/ResultCacheClearer.php
new file mode 100644
index 00000000..8cd4be74
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCacheClearer.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+use function dirname;
+use function is_file;
+use function unlink;
+
+final class ResultCacheClearer
+{
+
+	public function __construct(private string $cacheFilePath)
+	{
+	}
+
+	public function clear(): string
+	{
+		$dir = dirname($this->cacheFilePath);
+		if (!is_file($this->cacheFilePath)) {
+			return $dir;
+		}
+
+		@unlink($this->cacheFilePath);
+
+		return $dir;
+	}
+
+}
diff --git a/src/Analyser/ResultCache/ResultCacheManager.php b/src/Analyser/ResultCache/ResultCacheManager.php
new file mode 100644
index 00000000..1695a4f8
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCacheManager.php
@@ -0,0 +1,1068 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+use Nette\Neon\Neon;
+use PHPStan\Analyser\AnalyserResult;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\FileAnalyserResult;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Command\Output;
+use PHPStan\Dependency\ExportedNodeFetcher;
+use PHPStan\Dependency\RootExportedNode;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\ProjectConfigHelper;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\FileFinder;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileWriter;
+use PHPStan\Internal\ComposerHelper;
+use PHPStan\PhpDoc\StubFilesProvider;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use Throwable;
+use function array_diff;
+use function array_fill_keys;
+use function array_filter;
+use function array_key_exists;
+use function array_keys;
+use function array_unique;
+use function array_values;
+use function count;
+use function get_loaded_extensions;
+use function implode;
+use function is_array;
+use function is_file;
+use function ksort;
+use function microtime;
+use function round;
+use function sha1_file;
+use function sort;
+use function sprintf;
+use function str_starts_with;
+use function time;
+use function unlink;
+use function var_export;
+use const PHP_VERSION_ID;
+
+/**
+ * @phpstan-import-type LinesToIgnore from FileAnalyserResult
+ */
+final class ResultCacheManager
+{
+
+	private const CACHE_VERSION = 'v12-linesToIgnore';
+
+	/** @var array<string, string> */
+	private array $fileHashes = [];
+
+	/** @var array<string, true> */
+	private array $alreadyProcessed = [];
+
+	/**
+	 * @param string[] $analysedPaths
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string[] $bootstrapFiles
+	 * @param string[] $scanFiles
+	 * @param string[] $scanDirectories
+	 */
+	public function __construct(
+		private Container $container,
+		private ExportedNodeFetcher $exportedNodeFetcher,
+		private FileFinder $scanFileFinder,
+		private ReflectionProvider $reflectionProvider,
+		private StubFilesProvider $stubFilesProvider,
+		private FileHelper $fileHelper,
+		private string $cacheFilePath,
+		private array $analysedPaths,
+		private array $composerAutoloaderProjectPaths,
+		private string $usedLevel,
+		private ?string $cliAutoloadFile,
+		private array $bootstrapFiles,
+		private array $scanFiles,
+		private array $scanDirectories,
+		private bool $checkDependenciesOfProjectExtensionFiles,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $allAnalysedFiles
+	 * @param mixed[]|null $projectConfigArray
+	 */
+	public function restore(array $allAnalysedFiles, bool $debug, bool $onlyFiles, ?array $projectConfigArray, Output $output): ResultCache
+	{
+		$startTime = microtime(true);
+		if ($debug) {
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache not used because of debug mode.');
+			}
+			return new ResultCache($allAnalysedFiles, true, time(), $this->getMeta($allAnalysedFiles, $projectConfigArray), [], [], [], [], [], [], [], []);
+		}
+		if ($onlyFiles) {
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache not used because only files were passed as analysed paths.');
+			}
+			return new ResultCache($allAnalysedFiles, true, time(), $this->getMeta($allAnalysedFiles, $projectConfigArray), [], [], [], [], [], [], [], []);
+		}
+
+		$cacheFilePath = $this->cacheFilePath;
+		if (!is_file($cacheFilePath)) {
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache not used because the cache file does not exist.');
+			}
+			return new ResultCache($allAnalysedFiles, true, time(), $this->getMeta($allAnalysedFiles, $projectConfigArray), [], [], [], [], [], [], [], []);
+		}
+
+		try {
+			$data = require $cacheFilePath;
+		} catch (Throwable $e) {
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted(sprintf('Result cache not used because an error occurred while loading the cache file: %s', $e->getMessage()));
+			}
+
+			@unlink($cacheFilePath);
+
+			return new ResultCache($allAnalysedFiles, true, time(), $this->getMeta($allAnalysedFiles, $projectConfigArray), [], [], [], [], [], [], [], []);
+		}
+
+		if (!is_array($data)) {
+			@unlink($cacheFilePath);
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache not used because the cache file is corrupted.');
+			}
+
+			return new ResultCache($allAnalysedFiles, true, time(), $this->getMeta($allAnalysedFiles, $projectConfigArray), [], [], [], [], [], [], [], []);
+		}
+
+		$meta = $this->getMeta($allAnalysedFiles, $projectConfigArray);
+		if ($this->isMetaDifferent($data['meta'], $meta)) {
+			if ($output->isVeryVerbose()) {
+				$diffs = $this->getMetaKeyDifferences($data['meta'], $meta);
+				$output->writeLineFormatted('Result cache not used because the metadata do not match: ' . implode(', ', $diffs));
+			}
+			return new ResultCache($allAnalysedFiles, true, time(), $meta, [], [], [], [], [], [], [], []);
+		}
+
+		if (time() - $data['lastFullAnalysisTime'] >= 60 * 60 * 24 * 7) {
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache not used because it\'s more than 7 days since last full analysis.');
+			}
+			// run full analysis if the result cache is older than 7 days
+			return new ResultCache($allAnalysedFiles, true, time(), $meta, [], [], [], [], [], [], [], []);
+		}
+
+		/**
+		 * @var string $fileHash
+		 * @var bool $isAnalysed
+		 */
+		foreach ($data['projectExtensionFiles'] as $extensionFile => [$fileHash, $isAnalysed]) {
+			if (!$isAnalysed) {
+				continue;
+			}
+			if (!is_file($extensionFile)) {
+				if ($output->isVeryVerbose()) {
+					$output->writeLineFormatted(sprintf('Result cache not used because extension file %s was not found.', $extensionFile));
+				}
+				return new ResultCache($allAnalysedFiles, true, time(), $meta, [], [], [], [], [], [], [], []);
+			}
+
+			if ($this->getFileHash($extensionFile) === $fileHash) {
+				continue;
+			}
+
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted(sprintf('Result cache not used because extension file %s hash does not match.', $extensionFile));
+			}
+
+			return new ResultCache($allAnalysedFiles, true, time(), $meta, [], [], [], [], [], [], [], []);
+		}
+
+		$invertedDependencies = $data['dependencies'];
+		$deletedFiles = array_fill_keys(array_keys($invertedDependencies), true);
+		$filesToAnalyse = [];
+		$invertedDependenciesToReturn = [];
+		$errors = $data['errorsCallback']();
+		$locallyIgnoredErrors = $data['locallyIgnoredErrorsCallback']();
+		$linesToIgnore = $data['linesToIgnore'];
+		$unmatchedLineIgnores = $data['unmatchedLineIgnores'];
+		$collectedData = $data['collectedDataCallback']();
+		$exportedNodes = $data['exportedNodesCallback']();
+		$filteredErrors = [];
+		$filteredLocallyIgnoredErrors = [];
+		$filteredLinesToIgnore = [];
+		$filteredUnmatchedLineIgnores = [];
+		$filteredCollectedData = [];
+		$filteredExportedNodes = [];
+		$newFileAppeared = false;
+
+		foreach ($this->getStubFiles() as $stubFile) {
+			if (!array_key_exists($stubFile, $errors)) {
+				continue;
+			}
+
+			$filteredErrors[$stubFile] = $errors[$stubFile];
+		}
+
+		foreach ($allAnalysedFiles as $analysedFile) {
+			if (array_key_exists($analysedFile, $errors)) {
+				$filteredErrors[$analysedFile] = $errors[$analysedFile];
+			}
+			if (array_key_exists($analysedFile, $locallyIgnoredErrors)) {
+				$filteredLocallyIgnoredErrors[$analysedFile] = $locallyIgnoredErrors[$analysedFile];
+			}
+			if (array_key_exists($analysedFile, $linesToIgnore)) {
+				$filteredLinesToIgnore[$analysedFile] = $linesToIgnore[$analysedFile];
+			}
+			if (array_key_exists($analysedFile, $unmatchedLineIgnores)) {
+				$filteredUnmatchedLineIgnores[$analysedFile] = $unmatchedLineIgnores[$analysedFile];
+			}
+			if (array_key_exists($analysedFile, $collectedData)) {
+				$filteredCollectedData[$analysedFile] = $collectedData[$analysedFile];
+			}
+			if (array_key_exists($analysedFile, $exportedNodes)) {
+				$filteredExportedNodes[$analysedFile] = $exportedNodes[$analysedFile];
+			}
+			if (!array_key_exists($analysedFile, $invertedDependencies)) {
+				// new file
+				$filesToAnalyse[] = $analysedFile;
+				$newFileAppeared = true;
+				continue;
+			}
+
+			unset($deletedFiles[$analysedFile]);
+
+			$analysedFileData = $invertedDependencies[$analysedFile];
+			$cachedFileHash = $analysedFileData['fileHash'];
+			$dependentFiles = $analysedFileData['dependentFiles'];
+			$invertedDependenciesToReturn[$analysedFile] = $dependentFiles;
+			$currentFileHash = $this->getFileHash($analysedFile);
+
+			if ($cachedFileHash === $currentFileHash) {
+				continue;
+			}
+
+			$filesToAnalyse[] = $analysedFile;
+			if (!array_key_exists($analysedFile, $filteredExportedNodes)) {
+				continue;
+			}
+
+			$cachedFileExportedNodes = $filteredExportedNodes[$analysedFile];
+			$exportedNodesChanged = $this->exportedNodesChanged($analysedFile, $cachedFileExportedNodes);
+			if ($exportedNodesChanged === null) {
+				continue;
+			}
+
+			if ($exportedNodesChanged) {
+				$newFileAppeared = true;
+			}
+
+			foreach ($dependentFiles as $dependentFile) {
+				if (!is_file($dependentFile)) {
+					continue;
+				}
+				$filesToAnalyse[] = $dependentFile;
+			}
+		}
+
+		foreach (array_keys($deletedFiles) as $deletedFile) {
+			if (!array_key_exists($deletedFile, $invertedDependencies)) {
+				continue;
+			}
+
+			$deletedFileData = $invertedDependencies[$deletedFile];
+			$dependentFiles = $deletedFileData['dependentFiles'];
+			foreach ($dependentFiles as $dependentFile) {
+				if (!is_file($dependentFile)) {
+					continue;
+				}
+				$filesToAnalyse[] = $dependentFile;
+			}
+		}
+
+		if ($newFileAppeared) {
+			foreach (array_keys($filteredErrors) as $fileWithError) {
+				$filesToAnalyse[] = $fileWithError;
+			}
+		}
+
+		$filesToAnalyse = array_unique($filesToAnalyse);
+		$filesToAnalyseCount = count($filesToAnalyse);
+
+		if ($output->isVeryVerbose()) {
+			$elapsed = microtime(true) - $startTime;
+			$elapsedString = $elapsed > 5
+				? sprintf(' in %f seconds', round($elapsed, 1))
+				: '';
+
+			$output->writeLineFormatted(sprintf(
+				'Result cache restored%s. %d %s will be reanalysed.',
+				$elapsedString,
+				$filesToAnalyseCount,
+				$filesToAnalyseCount === 1 ? 'file' : 'files',
+			));
+		}
+
+		return new ResultCache($filesToAnalyse, false, $data['lastFullAnalysisTime'], $meta, $filteredErrors, $filteredLocallyIgnoredErrors, $filteredLinesToIgnore, $filteredUnmatchedLineIgnores, $filteredCollectedData, $invertedDependenciesToReturn, $filteredExportedNodes, $data['projectExtensionFiles']);
+	}
+
+	/**
+	 * @param mixed[] $cachedMeta
+	 * @param mixed[] $currentMeta
+	 */
+	private function isMetaDifferent(array $cachedMeta, array $currentMeta): bool
+	{
+		$projectConfig = $currentMeta['projectConfig'];
+		if ($projectConfig !== null) {
+			ksort($currentMeta['projectConfig']);
+
+			$currentMeta['projectConfig'] = Neon::encode($currentMeta['projectConfig']);
+		}
+
+		return $cachedMeta !== $currentMeta;
+	}
+
+	/**
+	 * @param mixed[] $cachedMeta
+	 * @param mixed[] $currentMeta
+	 *
+	 * @return string[]
+	 */
+	private function getMetaKeyDifferences(array $cachedMeta, array $currentMeta): array
+	{
+		$diffs = [];
+		foreach ($cachedMeta as $key => $value) {
+			if (!array_key_exists($key, $currentMeta)) {
+				$diffs[] = $key;
+				continue;
+			}
+
+			if ($value === $currentMeta[$key]) {
+				continue;
+			}
+
+			$diffs[] = $key;
+		}
+
+		if ($diffs === []) {
+			// when none of the keys is different,
+			// the order of the keys is the problem
+			$diffs[] = 'keyOrder';
+		}
+
+		return $diffs;
+	}
+
+	/**
+	 * @param array<int, RootExportedNode> $cachedFileExportedNodes
+	 * @return bool|null null means nothing changed, true means new root symbol appeared, false means nested node changed
+	 */
+	private function exportedNodesChanged(string $analysedFile, array $cachedFileExportedNodes): ?bool
+	{
+		$fileExportedNodes = $this->exportedNodeFetcher->fetchNodes($analysedFile);
+
+		$cachedSymbols = [];
+		foreach ($cachedFileExportedNodes as $cachedFileExportedNode) {
+			$cachedSymbols[$cachedFileExportedNode->getType()][] = $cachedFileExportedNode->getName();
+		}
+
+		$fileSymbols = [];
+		foreach ($fileExportedNodes as $fileExportedNode) {
+			$fileSymbols[$fileExportedNode->getType()][] = $fileExportedNode->getName();
+		}
+
+		if ($cachedSymbols !== $fileSymbols) {
+			return true;
+		}
+
+		if (count($fileExportedNodes) !== count($cachedFileExportedNodes)) {
+			return true;
+		}
+
+		foreach ($fileExportedNodes as $i => $fileExportedNode) {
+			$cachedExportedNode = $cachedFileExportedNodes[$i];
+			if (!$cachedExportedNode->equals($fileExportedNode)) {
+				return false;
+			}
+		}
+
+		return null;
+	}
+
+	public function process(AnalyserResult $analyserResult, ResultCache $resultCache, Output $output, bool $onlyFiles, bool $save): ResultCacheProcessResult
+	{
+		$internalErrors = $analyserResult->getInternalErrors();
+		$freshErrorsByFile = [];
+		foreach ($analyserResult->getErrors() as $error) {
+			$freshErrorsByFile[$error->getFilePath()][] = $error;
+		}
+
+		$freshLocallyIgnoredErrorsByFile = [];
+		foreach ($analyserResult->getLocallyIgnoredErrors() as $error) {
+			$freshLocallyIgnoredErrorsByFile[$error->getFilePath()][] = $error;
+		}
+
+		$freshCollectedDataByFile = [];
+		foreach ($analyserResult->getCollectedData() as $collectedData) {
+			$freshCollectedDataByFile[$collectedData->getFilePath()][] = $collectedData;
+		}
+
+		$meta = $resultCache->getMeta();
+		$projectConfigArray = $meta['projectConfig'];
+		if ($projectConfigArray !== null) {
+			$meta['projectConfig'] = Neon::encode($projectConfigArray);
+		}
+		$doSave = function (array $errorsByFile, $locallyIgnoredErrorsByFile, $linesToIgnore, $unmatchedLineIgnores, $collectedDataByFile, ?array $dependencies, array $exportedNodes, array $projectExtensionFiles) use ($internalErrors, $resultCache, $output, $onlyFiles, $meta): bool {
+			if ($onlyFiles) {
+				if ($output->isVeryVerbose()) {
+					$output->writeLineFormatted('Result cache was not saved because only files were passed as analysed paths.');
+				}
+				return false;
+			}
+			if ($dependencies === null) {
+				if ($output->isVeryVerbose()) {
+					$output->writeLineFormatted('Result cache was not saved because of error in dependencies.');
+				}
+				return false;
+			}
+
+			if (count($internalErrors) > 0) {
+				if ($output->isVeryVerbose()) {
+					$output->writeLineFormatted('Result cache was not saved because of internal errors.');
+				}
+				return false;
+			}
+
+			foreach ($errorsByFile as $errors) {
+				foreach ($errors as $error) {
+					if (!$error->hasNonIgnorableException()) {
+						continue;
+					}
+
+					if ($output->isVeryVerbose()) {
+						$output->writeLineFormatted(sprintf('Result cache was not saved because of non-ignorable exception: %s', $error->getMessage()));
+					}
+
+					return false;
+				}
+			}
+
+			$this->save($resultCache->getLastFullAnalysisTime(), $errorsByFile, $locallyIgnoredErrorsByFile, $linesToIgnore, $unmatchedLineIgnores, $collectedDataByFile, $dependencies, $exportedNodes, $projectExtensionFiles, $meta);
+
+			if ($output->isVeryVerbose()) {
+				$output->writeLineFormatted('Result cache is saved.');
+			}
+
+			return true;
+		};
+
+		if ($resultCache->isFullAnalysis()) {
+			$saved = false;
+			if ($save !== false) {
+				$projectExtensionFiles = [];
+				if ($analyserResult->getDependencies() !== null) {
+					$projectExtensionFiles = $this->getProjectExtensionFiles($projectConfigArray, $analyserResult->getDependencies());
+				}
+				$saved = $doSave($freshErrorsByFile, $freshLocallyIgnoredErrorsByFile, $analyserResult->getLinesToIgnore(), $analyserResult->getUnmatchedLineIgnores(), $freshCollectedDataByFile, $analyserResult->getDependencies(), $analyserResult->getExportedNodes(), $projectExtensionFiles);
+			} else {
+				if ($output->isVeryVerbose()) {
+					$output->writeLineFormatted('Result cache was not saved because it was not requested.');
+				}
+			}
+
+			return new ResultCacheProcessResult($analyserResult, $saved);
+		}
+
+		$errorsByFile = $this->mergeErrors($resultCache, $freshErrorsByFile);
+		$locallyIgnoredErrorsByFile = $this->mergeLocallyIgnoredErrors($resultCache, $freshLocallyIgnoredErrorsByFile);
+		$collectedDataByFile = $this->mergeCollectedData($resultCache, $freshCollectedDataByFile);
+		$dependencies = $this->mergeDependencies($resultCache, $analyserResult->getDependencies());
+		$exportedNodes = $this->mergeExportedNodes($resultCache, $analyserResult->getExportedNodes());
+		$linesToIgnore = $this->mergeLinesToIgnore($resultCache, $analyserResult->getLinesToIgnore());
+		$unmatchedLineIgnores = $this->mergeUnmatchedLineIgnores($resultCache, $analyserResult->getUnmatchedLineIgnores());
+
+		$saved = false;
+		if ($save !== false) {
+			$projectExtensionFiles = [];
+			foreach ($resultCache->getProjectExtensionFiles() as $file => [$hash, $isAnalysed, $className]) {
+				if ($isAnalysed) {
+					continue;
+				}
+
+				// keep the same file hashes from the old run
+				// so that the message "When you edit them and re-run PHPStan, the result cache will get stale."
+				// keeps being shown on subsequent runs
+				$projectExtensionFiles[$file] = [$hash, false, $className];
+			}
+			if ($dependencies !== null) {
+				foreach ($this->getProjectExtensionFiles($projectConfigArray, $dependencies) as $file => [$hash, $isAnalysed, $className]) {
+					if (!$isAnalysed) {
+						continue;
+					}
+
+					$projectExtensionFiles[$file] = [$hash, true, $className];
+				}
+			}
+			$saved = $doSave($errorsByFile, $locallyIgnoredErrorsByFile, $linesToIgnore, $unmatchedLineIgnores, $collectedDataByFile, $dependencies, $exportedNodes, $projectExtensionFiles);
+		}
+
+		$flatErrors = [];
+		foreach ($errorsByFile as $fileErrors) {
+			foreach ($fileErrors as $fileError) {
+				$flatErrors[] = $fileError;
+			}
+		}
+
+		$flatLocallyIgnoredErrors = [];
+		foreach ($locallyIgnoredErrorsByFile as $fileErrors) {
+			foreach ($fileErrors as $fileError) {
+				$flatLocallyIgnoredErrors[] = $fileError;
+			}
+		}
+
+		$flatCollectedData = [];
+		foreach ($collectedDataByFile as $fileCollectedData) {
+			foreach ($fileCollectedData as $collectedData) {
+				$flatCollectedData[] = $collectedData;
+			}
+		}
+
+		return new ResultCacheProcessResult(new AnalyserResult(
+			$flatErrors,
+			$analyserResult->getFilteredPhpErrors(),
+			$analyserResult->getAllPhpErrors(),
+			$flatLocallyIgnoredErrors,
+			$linesToIgnore,
+			$unmatchedLineIgnores,
+			$internalErrors,
+			$flatCollectedData,
+			$dependencies,
+			$exportedNodes,
+			$analyserResult->hasReachedInternalErrorsCountLimit(),
+			$analyserResult->getPeakMemoryUsageBytes(),
+		), $saved);
+	}
+
+	/**
+	 * @param array<string, list<Error>> $freshErrorsByFile
+	 * @return array<string, list<Error>>
+	 */
+	private function mergeErrors(ResultCache $resultCache, array $freshErrorsByFile): array
+	{
+		$errorsByFile = $resultCache->getErrors();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshErrorsByFile)) {
+				unset($errorsByFile[$file]);
+				continue;
+			}
+			$errorsByFile[$file] = $freshErrorsByFile[$file];
+		}
+
+		return $errorsByFile;
+	}
+
+	/**
+	 * @param array<string, list<Error>> $freshLocallyIgnoredErrorsByFile
+	 * @return array<string, list<Error>>
+	 */
+	private function mergeLocallyIgnoredErrors(ResultCache $resultCache, array $freshLocallyIgnoredErrorsByFile): array
+	{
+		$errorsByFile = $resultCache->getLocallyIgnoredErrors();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshLocallyIgnoredErrorsByFile)) {
+				unset($errorsByFile[$file]);
+				continue;
+			}
+			$errorsByFile[$file] = $freshLocallyIgnoredErrorsByFile[$file];
+		}
+
+		return $errorsByFile;
+	}
+
+	/**
+	 * @param array<string, array<CollectedData>> $freshCollectedDataByFile
+	 * @return array<string, array<CollectedData>>
+	 */
+	private function mergeCollectedData(ResultCache $resultCache, array $freshCollectedDataByFile): array
+	{
+		$collectedDataByFile = $resultCache->getCollectedData();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshCollectedDataByFile)) {
+				unset($collectedDataByFile[$file]);
+				continue;
+			}
+			$collectedDataByFile[$file] = $freshCollectedDataByFile[$file];
+		}
+
+		return $collectedDataByFile;
+	}
+
+	/**
+	 * @param array<string, array<string>>|null $freshDependencies
+	 * @return array<string, array<string>>|null
+	 */
+	private function mergeDependencies(ResultCache $resultCache, ?array $freshDependencies): ?array
+	{
+		if ($freshDependencies === null) {
+			return null;
+		}
+
+		$cachedDependencies = [];
+		$resultCacheDependencies = $resultCache->getDependencies();
+		$filesNoOneIsDependingOn = array_fill_keys(array_keys($resultCacheDependencies), true);
+		foreach ($resultCacheDependencies as $file => $filesDependingOnFile) {
+			foreach ($filesDependingOnFile as $fileDependingOnFile) {
+				$cachedDependencies[$fileDependingOnFile][] = $file;
+				unset($filesNoOneIsDependingOn[$fileDependingOnFile]);
+			}
+		}
+
+		foreach (array_keys($filesNoOneIsDependingOn) as $file) {
+			if (array_key_exists($file, $cachedDependencies)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$cachedDependencies[$file] = [];
+		}
+
+		$newDependencies = $cachedDependencies;
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshDependencies)) {
+				unset($newDependencies[$file]);
+				continue;
+			}
+
+			$newDependencies[$file] = $freshDependencies[$file];
+		}
+
+		return $newDependencies;
+	}
+
+	/**
+	 * @param array<string, array<RootExportedNode>> $freshExportedNodes
+	 * @return array<string, array<RootExportedNode>>
+	 */
+	private function mergeExportedNodes(ResultCache $resultCache, array $freshExportedNodes): array
+	{
+		$newExportedNodes = $resultCache->getExportedNodes();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshExportedNodes)) {
+				unset($newExportedNodes[$file]);
+				continue;
+			}
+
+			$newExportedNodes[$file] = $freshExportedNodes[$file];
+		}
+
+		return $newExportedNodes;
+	}
+
+	/**
+	 * @param array<string, LinesToIgnore> $freshLinesToIgnore
+	 * @return array<string, LinesToIgnore>
+	 */
+	private function mergeLinesToIgnore(ResultCache $resultCache, array $freshLinesToIgnore): array
+	{
+		$newLinesToIgnore = $resultCache->getLinesToIgnore();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshLinesToIgnore)) {
+				unset($newLinesToIgnore[$file]);
+				continue;
+			}
+
+			$newLinesToIgnore[$file] = $freshLinesToIgnore[$file];
+		}
+
+		return $newLinesToIgnore;
+	}
+
+	/**
+	 * @param array<string, LinesToIgnore> $freshUnmatchedLineIgnores
+	 * @return array<string, LinesToIgnore>
+	 */
+	private function mergeUnmatchedLineIgnores(ResultCache $resultCache, array $freshUnmatchedLineIgnores): array
+	{
+		$newUnmatchedLineIgnores = $resultCache->getUnmatchedLineIgnores();
+		foreach ($resultCache->getFilesToAnalyse() as $file) {
+			if (!array_key_exists($file, $freshUnmatchedLineIgnores)) {
+				unset($newUnmatchedLineIgnores[$file]);
+				continue;
+			}
+
+			$newUnmatchedLineIgnores[$file] = $freshUnmatchedLineIgnores[$file];
+		}
+
+		return $newUnmatchedLineIgnores;
+	}
+
+	/**
+	 * @param array<string, list<Error>> $errors
+	 * @param array<string, list<Error>> $locallyIgnoredErrors
+	 * @param array<string, LinesToIgnore> $linesToIgnore
+	 * @param array<string, LinesToIgnore> $unmatchedLineIgnores
+	 * @param array<string, array<CollectedData>> $collectedData
+	 * @param array<string, array<string>> $dependencies
+	 * @param array<string, array<RootExportedNode>> $exportedNodes
+	 * @param array<string, array{string, bool, string}> $projectExtensionFiles
+	 * @param mixed[] $meta
+	 */
+	private function save(
+		int $lastFullAnalysisTime,
+		array $errors,
+		array $locallyIgnoredErrors,
+		array $linesToIgnore,
+		array $unmatchedLineIgnores,
+		array $collectedData,
+		array $dependencies,
+		array $exportedNodes,
+		array $projectExtensionFiles,
+		array $meta,
+	): void
+	{
+		$invertedDependencies = [];
+		$filesNoOneIsDependingOn = array_fill_keys(array_keys($dependencies), true);
+		foreach ($dependencies as $file => $fileDependencies) {
+			foreach ($fileDependencies as $fileDep) {
+				if (!array_key_exists($fileDep, $invertedDependencies)) {
+					$invertedDependencies[$fileDep] = [
+						'fileHash' => $this->getFileHash($fileDep),
+						'dependentFiles' => [],
+					];
+					unset($filesNoOneIsDependingOn[$fileDep]);
+				}
+				$invertedDependencies[$fileDep]['dependentFiles'][] = $file;
+			}
+		}
+
+		foreach (array_keys($filesNoOneIsDependingOn) as $file) {
+			if (array_key_exists($file, $invertedDependencies)) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (!is_file($file)) {
+				continue;
+			}
+
+			$invertedDependencies[$file] = [
+				'fileHash' => $this->getFileHash($file),
+				'dependentFiles' => [],
+			];
+		}
+
+		ksort($errors);
+		ksort($locallyIgnoredErrors);
+		ksort($linesToIgnore);
+		ksort($unmatchedLineIgnores);
+		ksort($collectedData);
+		ksort($invertedDependencies);
+
+		foreach ($invertedDependencies as $file => $fileData) {
+			$dependentFiles = $fileData['dependentFiles'];
+			sort($dependentFiles);
+			$invertedDependencies[$file]['dependentFiles'] = $dependentFiles;
+		}
+
+		ksort($exportedNodes);
+
+		$file = $this->cacheFilePath;
+
+		FileWriter::write(
+			$file,
+			"<?php declare(strict_types = 1);
+
+return [
+	'lastFullAnalysisTime' => " . var_export($lastFullAnalysisTime, true) . ",
+	'meta' => " . var_export($meta, true) . ",
+	'projectExtensionFiles' => " . var_export($projectExtensionFiles, true) . ",
+	'errorsCallback' => static function (): array { return " . var_export($errors, true) . "; },
+	'locallyIgnoredErrorsCallback' => static function (): array { return " . var_export($locallyIgnoredErrors, true) . "; },
+	'linesToIgnore' => " . var_export($linesToIgnore, true) . ",
+	'unmatchedLineIgnores' => " . var_export($unmatchedLineIgnores, true) . ",
+	'collectedDataCallback' => static function (): array { return " . var_export($collectedData, true) . "; },
+	'dependencies' => " . var_export($invertedDependencies, true) . ",
+	'exportedNodesCallback' => static function (): array { return " . var_export($exportedNodes, true) . '; },
+];
+',
+		);
+	}
+
+	/**
+	 * @param mixed[]|null $projectConfig
+	 * @param array<string, mixed> $dependencies
+	 * @return array<string, array{string, bool, string}>
+	 */
+	private function getProjectExtensionFiles(?array $projectConfig, array $dependencies): array
+	{
+		$this->alreadyProcessed = [];
+		$projectExtensionFiles = [];
+		if ($projectConfig !== null) {
+			$vendorDirs = [];
+			foreach ($this->composerAutoloaderProjectPaths as $autoloaderProjectPath) {
+				$composer = ComposerHelper::getComposerConfig($autoloaderProjectPath);
+				if ($composer === null) {
+					continue;
+				}
+				$vendorDirectory = ComposerHelper::getVendorDirFromComposerConfig($autoloaderProjectPath, $composer);
+				$vendorDirs[] = $this->fileHelper->normalizePath($vendorDirectory);
+			}
+
+			$classes = ProjectConfigHelper::getServiceClassNames($projectConfig);
+			foreach ($classes as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					continue;
+				}
+
+				$classReflection = $this->reflectionProvider->getClass($class);
+				$fileName = $classReflection->getFileName();
+				if ($fileName === null) {
+					continue;
+				}
+
+				if (str_starts_with($fileName, 'phar://')) {
+					continue;
+				}
+
+				$allServiceFiles = $this->getAllDependencies($fileName, $dependencies);
+				if (count($allServiceFiles) === 0) {
+					$normalizedFileName = $this->fileHelper->normalizePath($fileName);
+					foreach ($vendorDirs as $vendorDir) {
+						if (str_starts_with($normalizedFileName, $vendorDir)) {
+							continue 2;
+						}
+					}
+					$projectExtensionFiles[$fileName] = [$this->getFileHash($fileName), false, $class];
+					continue;
+				}
+
+				foreach ($allServiceFiles as $serviceFile) {
+					if (array_key_exists($serviceFile, $projectExtensionFiles)) {
+						continue;
+					}
+
+					$projectExtensionFiles[$serviceFile] = [$this->getFileHash($serviceFile), true, $class];
+				}
+			}
+		}
+
+		return $projectExtensionFiles;
+	}
+
+	/**
+	 * @param array<string, array<int, string>> $dependencies
+	 * @return array<int, string>
+	 */
+	private function getAllDependencies(string $fileName, array $dependencies): array
+	{
+		if (!array_key_exists($fileName, $dependencies)) {
+			return [];
+		}
+
+		if (array_key_exists($fileName, $this->alreadyProcessed)) {
+			return [];
+		}
+
+		$this->alreadyProcessed[$fileName] = true;
+
+		$files = [$fileName];
+
+		if ($this->checkDependenciesOfProjectExtensionFiles) {
+			foreach ($dependencies[$fileName] as $fileDep) {
+				foreach ($this->getAllDependencies($fileDep, $dependencies) as $fileDep2) {
+					$files[] = $fileDep2;
+				}
+			}
+		}
+
+		return $files;
+	}
+
+	/**
+	 * @param string[] $allAnalysedFiles
+	 * @param mixed[]|null $projectConfigArray
+	 * @return mixed[]
+	 */
+	private function getMeta(array $allAnalysedFiles, ?array $projectConfigArray): array
+	{
+		$extensions = array_values(array_filter(get_loaded_extensions(), static fn (string $extension): bool => $extension !== 'xdebug'));
+		sort($extensions);
+
+		if ($projectConfigArray !== null) {
+			unset($projectConfigArray['parameters']['editorUrl']);
+			unset($projectConfigArray['parameters']['editorUrlTitle']);
+			unset($projectConfigArray['parameters']['errorFormat']);
+			unset($projectConfigArray['parameters']['ignoreErrors']);
+			unset($projectConfigArray['parameters']['reportUnmatchedIgnoredErrors']);
+			unset($projectConfigArray['parameters']['tipsOfTheDay']);
+			unset($projectConfigArray['parameters']['parallel']);
+			unset($projectConfigArray['parameters']['internalErrorsCountLimit']);
+			unset($projectConfigArray['parameters']['cache']);
+			unset($projectConfigArray['parameters']['memoryLimitFile']);
+			unset($projectConfigArray['parameters']['pro']);
+			unset($projectConfigArray['parametersSchema']);
+
+			ksort($projectConfigArray);
+		}
+
+		return [
+			'cacheVersion' => self::CACHE_VERSION,
+			'phpstanVersion' => ComposerHelper::getPhpStanVersion(),
+			'metaExtensions' => $this->getMetaFromPhpStanExtensions(),
+			'phpVersion' => PHP_VERSION_ID,
+			'projectConfig' => $projectConfigArray,
+			'analysedPaths' => $this->analysedPaths,
+			'scannedFiles' => $this->getScannedFiles($allAnalysedFiles),
+			'composerLocks' => $this->getComposerLocks(),
+			'composerInstalled' => $this->getComposerInstalled(),
+			'executedFilesHashes' => $this->getExecutedFileHashes(),
+			'phpExtensions' => $extensions,
+			'stubFiles' => $this->getStubFiles(),
+			'level' => $this->usedLevel,
+		];
+	}
+
+	private function getFileHash(string $path): string
+	{
+		if (array_key_exists($path, $this->fileHashes)) {
+			return $this->fileHashes[$path];
+		}
+
+		$hash = sha1_file($path);
+		if ($hash === false) {
+			throw new CouldNotReadFileException($path);
+		}
+		$this->fileHashes[$path] = $hash;
+
+		return $hash;
+	}
+
+	/**
+	 * @param string[] $allAnalysedFiles
+	 * @return array<string, string>
+	 */
+	private function getScannedFiles(array $allAnalysedFiles): array
+	{
+		$scannedFiles = $this->scanFiles;
+		foreach ($this->scanFileFinder->findFiles($this->scanDirectories)->getFiles() as $file) {
+			$scannedFiles[] = $file;
+		}
+
+		$scannedFiles = array_unique($scannedFiles);
+
+		$hashes = [];
+		foreach (array_diff($scannedFiles, $allAnalysedFiles) as $file) {
+			$hashes[$file] = $this->getFileHash($file);
+		}
+
+		ksort($hashes);
+
+		return $hashes;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	private function getExecutedFileHashes(): array
+	{
+		$hashes = [];
+		if ($this->cliAutoloadFile !== null) {
+			$hashes[$this->cliAutoloadFile] = $this->getFileHash($this->cliAutoloadFile);
+		}
+
+		foreach ($this->bootstrapFiles as $bootstrapFile) {
+			$hashes[$bootstrapFile] = $this->getFileHash($bootstrapFile);
+		}
+
+		ksort($hashes);
+
+		return $hashes;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	private function getComposerLocks(): array
+	{
+		$locks = [];
+		foreach ($this->composerAutoloaderProjectPaths as $autoloadPath) {
+			$lockPath = $autoloadPath . '/composer.lock';
+			if (!is_file($lockPath)) {
+				continue;
+			}
+
+			$locks[$lockPath] = $this->getFileHash($lockPath);
+		}
+
+		return $locks;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	private function getComposerInstalled(): array
+	{
+		$data = [];
+		foreach ($this->composerAutoloaderProjectPaths as $autoloadPath) {
+			$composer = ComposerHelper::getComposerConfig($autoloadPath);
+
+			if ($composer === null) {
+				continue;
+			}
+
+			$filePath = ComposerHelper::getVendorDirFromComposerConfig($autoloadPath, $composer) . '/composer/installed.php';
+			if (!is_file($filePath)) {
+				continue;
+			}
+
+			$installed = require $filePath;
+			$rootName = $installed['root']['name'];
+			unset($installed['root']);
+			unset($installed['versions'][$rootName]);
+
+			$data[$filePath] = $installed;
+		}
+
+		return $data;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	private function getStubFiles(): array
+	{
+		$stubFiles = [];
+		foreach ($this->stubFilesProvider->getProjectStubFiles() as $stubFile) {
+			$stubFiles[$stubFile] = $this->getFileHash($stubFile);
+		}
+
+		ksort($stubFiles);
+
+		return $stubFiles;
+	}
+
+	/**
+	 * @return array<string, string>
+	 * @throws ShouldNotHappenException
+	 */
+	private function getMetaFromPhpStanExtensions(): array
+	{
+		$meta = [];
+
+		/** @var ResultCacheMetaExtension $extension */
+		foreach ($this->container->getServicesByTag(ResultCacheMetaExtension::EXTENSION_TAG) as $extension) {
+			if (array_key_exists($extension->getKey(), $meta)) {
+				throw new ShouldNotHappenException(sprintf(
+					'Duplicate ResultCacheMetaExtension with key "%s" found.',
+					$extension->getKey(),
+				));
+			}
+
+			$meta[$extension->getKey()] = $extension->getHash();
+		}
+
+		ksort($meta);
+
+		return $meta;
+	}
+
+}
diff --git a/src/Analyser/ResultCache/ResultCacheManagerFactory.php b/src/Analyser/ResultCache/ResultCacheManagerFactory.php
new file mode 100644
index 00000000..f19d2c92
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCacheManagerFactory.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+interface ResultCacheManagerFactory
+{
+
+	public function create(): ResultCacheManager;
+
+}
diff --git a/src/Analyser/ResultCache/ResultCacheMetaExtension.php b/src/Analyser/ResultCache/ResultCacheMetaExtension.php
new file mode 100644
index 00000000..0f1b56b7
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCacheMetaExtension.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+/**
+ * ResultCacheMetaExtension can be used for extending PHPStan's built-in mechanism that is used for
+ * calculating metadata for result cache. Using this extension you may add additional metadata that will
+ * be used for determining if analysis must be run again, or can be re-used from result cache.
+ *
+ * @see https://github.com/phpstan/phpstan-symfony/issues/255 for the context.
+ *
+ * To register it in the configuration file use the `phpstan.resultCacheMetaExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.resultCacheMetaExtension
+ * ```
+ *
+ * @api
+ */
+interface ResultCacheMetaExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.resultCacheMetaExtension';
+
+	/**
+	 * Returns unique key for this result cache meta entry. This describes the source of the metadata.
+	 */
+	public function getKey(): string;
+
+	/**
+	 * Returns hash of the result cache meta entry. This represents the current state of the additional meta source.
+	 */
+	public function getHash(): string;
+
+}
diff --git a/src/Analyser/ResultCache/ResultCacheProcessResult.php b/src/Analyser/ResultCache/ResultCacheProcessResult.php
new file mode 100644
index 00000000..9e5a4604
--- /dev/null
+++ b/src/Analyser/ResultCache/ResultCacheProcessResult.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Analyser\ResultCache;
+return;
+
+use PHPStan\Analyser\AnalyserResult;
+
+final class ResultCacheProcessResult
+{
+
+	public function __construct(private AnalyserResult $analyserResult, private bool $saved)
+	{
+	}
+
+	public function getAnalyserResult(): AnalyserResult
+	{
+		return $this->analyserResult;
+	}
+
+	public function isSaved(): bool
+	{
+		return $this->saved;
+	}
+
+}
diff --git a/src/Analyser/RicherScopeGetTypeHelper.php b/src/Analyser/RicherScopeGetTypeHelper.php
new file mode 100644
index 00000000..0360caca
--- /dev/null
+++ b/src/Analyser/RicherScopeGetTypeHelper.php
@@ -0,0 +1,83 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp\Identical;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\TypeResult;
+use function is_string;
+
+final class RicherScopeGetTypeHelper
+{
+
+	public function __construct(private InitializerExprTypeResolver $initializerExprTypeResolver)
+	{
+	}
+
+	/**
+	 * @return TypeResult<BooleanType>
+	 */
+	public function getIdenticalResult(Scope $scope, Identical $expr): TypeResult
+	{
+		if (
+			$expr->left instanceof Variable
+			&& is_string($expr->left->name)
+			&& $expr->right instanceof Variable
+			&& is_string($expr->right->name)
+			&& $expr->left->name === $expr->right->name
+		) {
+			return new TypeResult(new ConstantBooleanType(true), []);
+		}
+
+		$leftType = $scope->getType($expr->left);
+		$rightType = $scope->getType($expr->right);
+
+		if (!$scope instanceof MutatingScope) {
+			return $this->initializerExprTypeResolver->resolveIdenticalType($leftType, $rightType);
+		}
+
+		if (
+			(
+				$expr->left instanceof Node\Expr\PropertyFetch
+				|| $expr->left instanceof Node\Expr\StaticPropertyFetch
+			)
+			&& $rightType->isNull()->yes()
+			&& !$scope->hasPropertyNativeType($expr->left)
+		) {
+			return new TypeResult(new BooleanType(), []);
+		}
+
+		if (
+			(
+				$expr->right instanceof Node\Expr\PropertyFetch
+				|| $expr->right instanceof Node\Expr\StaticPropertyFetch
+			)
+			&& $leftType->isNull()->yes()
+			&& !$scope->hasPropertyNativeType($expr->right)
+		) {
+			return new TypeResult(new BooleanType(), []);
+		}
+
+		return $this->initializerExprTypeResolver->resolveIdenticalType($leftType, $rightType);
+	}
+
+	/**
+	 * @return TypeResult<BooleanType>
+	 */
+	public function getNotIdenticalResult(Scope $scope, Node\Expr\BinaryOp\NotIdentical $expr): TypeResult
+	{
+		$identicalResult = $this->getIdenticalResult($scope, new Identical($expr->left, $expr->right));
+		$identicalType = $identicalResult->type;
+		if ($identicalType instanceof ConstantBooleanType) {
+			return new TypeResult(new ConstantBooleanType(!$identicalType->getValue()), $identicalResult->reasons);
+		}
+
+		return new TypeResult(new BooleanType(), []);
+	}
+
+}
diff --git a/src/Analyser/RuleErrorTransformer.php b/src/Analyser/RuleErrorTransformer.php
new file mode 100644
index 00000000..337a5209
--- /dev/null
+++ b/src/Analyser/RuleErrorTransformer.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+final class RuleErrorTransformer
+{
+
+	/**
+	 * @param class-string<Node> $nodeType
+	 */
+	public function transform(
+		RuleError $ruleError,
+		Scope $scope,
+		string $nodeType,
+		int $nodeLine,
+	): Error
+	{
+		$line = $nodeLine;
+		$canBeIgnored = true;
+		$fileName = $scope->getFileDescription();
+		$filePath = $scope->getFile();
+		$traitFilePath = null;
+		$tip = null;
+		$identifier = null;
+		$metadata = [];
+		if ($scope->isInTrait()) {
+			$traitReflection = $scope->getTraitReflection();
+			if ($traitReflection->getFileName() !== null) {
+				$traitFilePath = $traitReflection->getFileName();
+			}
+		}
+
+		if (
+			$ruleError instanceof LineRuleError
+			&& $ruleError->getLine() !== -1
+		) {
+			$line = $ruleError->getLine();
+		}
+		if (
+			$ruleError instanceof FileRuleError
+			&& $ruleError->getFile() !== ''
+		) {
+			$fileName = $ruleError->getFileDescription();
+			$filePath = $ruleError->getFile();
+			$traitFilePath = null;
+		}
+
+		if ($ruleError instanceof TipRuleError) {
+			$tip = $ruleError->getTip();
+		}
+
+		if ($ruleError instanceof IdentifierRuleError) {
+			$identifier = $ruleError->getIdentifier();
+		}
+
+		if ($ruleError instanceof MetadataRuleError) {
+			$metadata = $ruleError->getMetadata();
+		}
+
+		if ($ruleError instanceof NonIgnorableRuleError) {
+			$canBeIgnored = false;
+		}
+
+		return new Error(
+			$ruleError->getMessage(),
+			$fileName,
+			$line,
+			$canBeIgnored,
+			$filePath,
+			$traitFilePath,
+			$tip,
+			$nodeLine,
+			$nodeType,
+			$identifier,
+			$metadata,
+		);
+	}
+
+}
diff --git a/src/Analyser/Scope.php b/src/Analyser/Scope.php
new file mode 100644
index 00000000..cfebde4c
--- /dev/null
+++ b/src/Analyser/Scope.php
@@ -0,0 +1,143 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Name;
+use PhpParser\Node\Param;
+use PHPStan\Php\PhpVersions;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeWithClassName;
+
+/** @api */
+interface Scope extends ClassMemberAccessAnswerer, NamespaceAnswerer
+{
+
+	public const SUPERGLOBAL_VARIABLES = [
+		'GLOBALS',
+		'_SERVER',
+		'_GET',
+		'_POST',
+		'_FILES',
+		'_COOKIE',
+		'_SESSION',
+		'_REQUEST',
+		'_ENV',
+	];
+
+	public function getFile(): string;
+
+	public function getFileDescription(): string;
+
+	public function isDeclareStrictTypes(): bool;
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getTraitReflection()
+	 */
+	public function isInTrait(): bool;
+
+	public function getTraitReflection(): ?ClassReflection;
+
+	public function getFunction(): ?PhpFunctionFromParserNodeReflection;
+
+	public function getFunctionName(): ?string;
+
+	public function getParentScope(): ?self;
+
+	public function hasVariableType(string $variableName): TrinaryLogic;
+
+	public function getVariableType(string $variableName): Type;
+
+	public function canAnyVariableExist(): bool;
+
+	/**
+	 * @return array<int, string>
+	 */
+	public function getDefinedVariables(): array;
+
+	/**
+	 * @return array<int, string>
+	 */
+	public function getMaybeDefinedVariables(): array;
+
+	public function hasConstant(Name $name): bool;
+
+	public function getPropertyReflection(Type $typeWithProperty, string $propertyName): ?ExtendedPropertyReflection;
+
+	public function getMethodReflection(Type $typeWithMethod, string $methodName): ?ExtendedMethodReflection;
+
+	public function getConstantReflection(Type $typeWithConstant, string $constantName): ?ClassConstantReflection;
+
+	public function getIterableKeyType(Type $iteratee): Type;
+
+	public function getIterableValueType(Type $iteratee): Type;
+
+	public function isInAnonymousFunction(): bool;
+
+	public function getAnonymousFunctionReflection(): ?ParametersAcceptor;
+
+	public function getAnonymousFunctionReturnType(): ?Type;
+
+	public function getType(Expr $node): Type;
+
+	public function getNativeType(Expr $expr): Type;
+
+	public function getKeepVoidType(Expr $node): Type;
+
+	public function resolveName(Name $name): string;
+
+	public function resolveTypeByName(Name $name): TypeWithClassName;
+
+	/**
+	 * @param mixed $value
+	 */
+	public function getTypeFromValue($value): Type;
+
+	public function hasExpressionType(Expr $node): TrinaryLogic;
+
+	public function isInClassExists(string $className): bool;
+
+	public function isInFunctionExists(string $functionName): bool;
+
+	public function isInClosureBind(): bool;
+
+	/** @return list<FunctionReflection|MethodReflection> */
+	public function getFunctionCallStack(): array;
+
+	/** @return list<array{FunctionReflection|MethodReflection, ParameterReflection|null}> */
+	public function getFunctionCallStackWithParameters(): array;
+
+	public function isParameterValueNullable(Param $parameter): bool;
+
+	/**
+	 * @param Node\Name|Node\Identifier|Node\ComplexType|null $type
+	 */
+	public function getFunctionType($type, bool $isNullable, bool $isVariadic): Type;
+
+	public function isInExpressionAssign(Expr $expr): bool;
+
+	public function isUndefinedExpressionAllowed(Expr $expr): bool;
+
+	public function filterByTruthyValue(Expr $expr): self;
+
+	public function filterByFalseyValue(Expr $expr): self;
+
+	public function isInFirstLevelStatement(): bool;
+
+	public function getPhpVersion(): PhpVersions;
+
+}
diff --git a/src/Analyser/ScopeContext.php b/src/Analyser/ScopeContext.php
new file mode 100644
index 00000000..6a0e72ab
--- /dev/null
+++ b/src/Analyser/ScopeContext.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\ShouldNotHappenException;
+
+final class ScopeContext
+{
+
+	private function __construct(
+		private string $file,
+		private ?ClassReflection $classReflection,
+		private ?ClassReflection $traitReflection,
+	)
+	{
+	}
+
+	/** @api */
+	public static function create(string $file): self
+	{
+		return new self($file, null, null);
+	}
+
+	public function beginFile(): self
+	{
+		return new self($this->file, null, null);
+	}
+
+	public function enterClass(ClassReflection $classReflection): self
+	{
+		if ($this->classReflection !== null && !$classReflection->isAnonymous()) {
+			throw new ShouldNotHappenException();
+		}
+		if ($classReflection->isTrait()) {
+			throw new ShouldNotHappenException();
+		}
+		return new self($this->file, $classReflection, null);
+	}
+
+	public function enterTrait(ClassReflection $traitReflection): self
+	{
+		if ($this->classReflection === null) {
+			throw new ShouldNotHappenException();
+		}
+		if (!$traitReflection->isTrait()) {
+			throw new ShouldNotHappenException();
+		}
+
+		return new self($this->file, $this->classReflection, $traitReflection);
+	}
+
+	public function equals(self $otherContext): bool
+	{
+		if ($this->file !== $otherContext->file) {
+			return false;
+		}
+
+		if ($this->getClassReflection() === null) {
+			return $otherContext->getClassReflection() === null;
+		} elseif ($otherContext->getClassReflection() === null) {
+			return false;
+		}
+
+		$isSameClass = $this->getClassReflection()->getName() === $otherContext->getClassReflection()->getName();
+
+		if ($this->getTraitReflection() === null) {
+			return $otherContext->getTraitReflection() === null && $isSameClass;
+		} elseif ($otherContext->getTraitReflection() === null) {
+			return false;
+		}
+
+		$isSameTrait = $this->getTraitReflection()->getName() === $otherContext->getTraitReflection()->getName();
+
+		return $isSameClass && $isSameTrait;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getClassReflection(): ?ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getTraitReflection(): ?ClassReflection
+	{
+		return $this->traitReflection;
+	}
+
+}
diff --git a/src/Analyser/ScopeFactory.php b/src/Analyser/ScopeFactory.php
new file mode 100644
index 00000000..f48c218f
--- /dev/null
+++ b/src/Analyser/ScopeFactory.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+/**
+ * @api
+ */
+final class ScopeFactory
+{
+
+	public function __construct(private InternalScopeFactory $internalScopeFactory)
+	{
+	}
+
+	public function create(ScopeContext $context): MutatingScope
+	{
+		return $this->internalScopeFactory->create($context);
+	}
+
+}
diff --git a/src/Analyser/SpecifiedTypes.php b/src/Analyser/SpecifiedTypes.php
new file mode 100644
index 00000000..ad2ca1aa
--- /dev/null
+++ b/src/Analyser/SpecifiedTypes.php
@@ -0,0 +1,229 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class SpecifiedTypes
+{
+
+	private bool $overwrite = false;
+
+	/** @var array<string, ConditionalExpressionHolder[]> */
+	private array $newConditionalExpressionHolders = [];
+
+	private ?Expr $rootExpr = null;
+
+	/**
+	 * @api
+	 * @param array<string, array{Expr, Type}> $sureTypes
+	 * @param array<string, array{Expr, Type}> $sureNotTypes
+	 */
+	public function __construct(
+		private array $sureTypes = [],
+		private array $sureNotTypes = [],
+	)
+	{
+	}
+
+	/**
+	 * Normally, $sureTypes in truthy context are used to intersect with the pre-existing type.
+	 * And $sureNotTypes are used to remove type from the pre-existing type.
+	 *
+	 * Example: By default, non-empty-string intersected with '' (ConstantStringType) will lead to NeverType.
+	 * Because it's not possible to narrow non-empty-string to an empty string.
+	 *
+	 * In rare cases, a type-specifying extension might want to overwrite the pre-existing types
+	 * without taking the pre-existing types into consideration.
+	 *
+	 * In that case it should also call setAlwaysOverwriteTypes() on
+	 * the returned object.
+	 *
+	 * ! Only do this if you're certain. Otherwise, this is a source of common bugs. !
+	 *
+	 * @api
+	 */
+	public function setAlwaysOverwriteTypes(): self
+	{
+		$self = new self($this->sureTypes, $this->sureNotTypes);
+		$self->overwrite = true;
+		$self->newConditionalExpressionHolders = $this->newConditionalExpressionHolders;
+		$self->rootExpr = $this->rootExpr;
+
+		return $self;
+	}
+
+	/**
+	 * @api
+	 */
+	public function setRootExpr(?Expr $rootExpr): self
+	{
+		$self = new self($this->sureTypes, $this->sureNotTypes);
+		$self->overwrite = $this->overwrite;
+		$self->newConditionalExpressionHolders = $this->newConditionalExpressionHolders;
+		$self->rootExpr = $rootExpr;
+
+		return $self;
+	}
+
+	/**
+	 * @param array<string, ConditionalExpressionHolder[]> $newConditionalExpressionHolders
+	 */
+	public function setNewConditionalExpressionHolders(array $newConditionalExpressionHolders): self
+	{
+		$self = new self($this->sureTypes, $this->sureNotTypes);
+		$self->overwrite = $this->overwrite;
+		$self->newConditionalExpressionHolders = $newConditionalExpressionHolders;
+		$self->rootExpr = $this->rootExpr;
+
+		return $self;
+	}
+
+	/**
+	 * @api
+	 * @return array<string, array{Expr, Type}>
+	 */
+	public function getSureTypes(): array
+	{
+		return $this->sureTypes;
+	}
+
+	/**
+	 * @api
+	 * @return array<string, array{Expr, Type}>
+	 */
+	public function getSureNotTypes(): array
+	{
+		return $this->sureNotTypes;
+	}
+
+	public function shouldOverwrite(): bool
+	{
+		return $this->overwrite;
+	}
+
+	/**
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	public function getNewConditionalExpressionHolders(): array
+	{
+		return $this->newConditionalExpressionHolders;
+	}
+
+	public function getRootExpr(): ?Expr
+	{
+		return $this->rootExpr;
+	}
+
+	/** @api */
+	public function intersectWith(SpecifiedTypes $other): self
+	{
+		$sureTypeUnion = [];
+		$sureNotTypeUnion = [];
+		$rootExpr = $this->mergeRootExpr($this->rootExpr, $other->rootExpr);
+
+		foreach ($this->sureTypes as $exprString => [$exprNode, $type]) {
+			if (!isset($other->sureTypes[$exprString])) {
+				continue;
+			}
+
+			$sureTypeUnion[$exprString] = [
+				$exprNode,
+				TypeCombinator::union($type, $other->sureTypes[$exprString][1]),
+			];
+		}
+
+		foreach ($this->sureNotTypes as $exprString => [$exprNode, $type]) {
+			if (!isset($other->sureNotTypes[$exprString])) {
+				continue;
+			}
+
+			$sureNotTypeUnion[$exprString] = [
+				$exprNode,
+				TypeCombinator::intersect($type, $other->sureNotTypes[$exprString][1]),
+			];
+		}
+
+		$result = new self($sureTypeUnion, $sureNotTypeUnion);
+		if ($this->overwrite && $other->overwrite) {
+			$result = $result->setAlwaysOverwriteTypes();
+		}
+
+		return $result->setRootExpr($rootExpr);
+	}
+
+	/** @api */
+	public function unionWith(SpecifiedTypes $other): self
+	{
+		$sureTypeUnion = $this->sureTypes + $other->sureTypes;
+		$sureNotTypeUnion = $this->sureNotTypes + $other->sureNotTypes;
+		$rootExpr = $this->mergeRootExpr($this->rootExpr, $other->rootExpr);
+
+		foreach ($this->sureTypes as $exprString => [$exprNode, $type]) {
+			if (!isset($other->sureTypes[$exprString])) {
+				continue;
+			}
+
+			$sureTypeUnion[$exprString] = [
+				$exprNode,
+				TypeCombinator::intersect($type, $other->sureTypes[$exprString][1]),
+			];
+		}
+
+		foreach ($this->sureNotTypes as $exprString => [$exprNode, $type]) {
+			if (!isset($other->sureNotTypes[$exprString])) {
+				continue;
+			}
+
+			$sureNotTypeUnion[$exprString] = [
+				$exprNode,
+				TypeCombinator::union($type, $other->sureNotTypes[$exprString][1]),
+			];
+		}
+
+		$result = new self($sureTypeUnion, $sureNotTypeUnion);
+		if ($this->overwrite || $other->overwrite) {
+			$result = $result->setAlwaysOverwriteTypes();
+		}
+
+		return $result->setRootExpr($rootExpr);
+	}
+
+	public function normalize(Scope $scope): self
+	{
+		$sureTypes = $this->sureTypes;
+
+		foreach ($this->sureNotTypes as $exprString => [$exprNode, $sureNotType]) {
+			if (!isset($sureTypes[$exprString])) {
+				$sureTypes[$exprString] = [$exprNode, TypeCombinator::remove($scope->getType($exprNode), $sureNotType)];
+				continue;
+			}
+
+			$sureTypes[$exprString][1] = TypeCombinator::remove($sureTypes[$exprString][1], $sureNotType);
+		}
+
+		$result = new self($sureTypes, []);
+		if ($this->overwrite) {
+			$result = $result->setAlwaysOverwriteTypes();
+		}
+
+		return $result->setRootExpr($this->rootExpr);
+	}
+
+	private function mergeRootExpr(?Expr $rootExprA, ?Expr $rootExprB): ?Expr
+	{
+		if ($rootExprA === $rootExprB) {
+			return $rootExprA;
+		}
+
+		if ($rootExprA === null || $rootExprB === null) {
+			return $rootExprA ?? $rootExprB;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Analyser/StatementContext.php b/src/Analyser/StatementContext.php
new file mode 100644
index 00000000..9d340d5f
--- /dev/null
+++ b/src/Analyser/StatementContext.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+/**
+ * Object of this class is one of the parameters of `NodeScopeResolver::processStmtNodes()`.
+ *
+ * It determines whether loops will be analysed once or multiple times
+ * until the types "stabilize".
+ *
+ * When in doubt, use `StatementContext::createTopLevel()`.
+ */
+final class StatementContext
+{
+
+	private function __construct(
+		private bool $isTopLevel,
+	)
+	{
+	}
+
+	/**
+	 * @api
+	 */
+	public static function createTopLevel(): self
+	{
+		return new self(true);
+	}
+
+	/**
+	 * @api
+	 */
+	public static function createDeep(): self
+	{
+		return new self(false);
+	}
+
+	public function isTopLevel(): bool
+	{
+		return $this->isTopLevel;
+	}
+
+	public function enterDeep(): self
+	{
+		if ($this->isTopLevel) {
+			return self::createDeep();
+		}
+
+		return $this;
+	}
+
+}
diff --git a/src/Analyser/StatementExitPoint.php b/src/Analyser/StatementExitPoint.php
new file mode 100644
index 00000000..2cb0cedb
--- /dev/null
+++ b/src/Analyser/StatementExitPoint.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Stmt;
+
+/**
+ * @api
+ */
+final class StatementExitPoint
+{
+
+	public function __construct(private Stmt $statement, private MutatingScope $scope)
+	{
+	}
+
+	public function getStatement(): Stmt
+	{
+		return $this->statement;
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+}
diff --git a/src/Analyser/StatementResult.php b/src/Analyser/StatementResult.php
new file mode 100644
index 00000000..ce056788
--- /dev/null
+++ b/src/Analyser/StatementResult.php
@@ -0,0 +1,194 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node\Scalar\Int_;
+use PhpParser\Node\Stmt;
+
+/**
+ * @api
+ */
+final class StatementResult
+{
+
+	/**
+	 * @param StatementExitPoint[] $exitPoints
+	 * @param ThrowPoint[] $throwPoints
+	 * @param ImpurePoint[] $impurePoints
+	 * @param EndStatementResult[] $endStatements
+	 */
+	public function __construct(
+		private MutatingScope $scope,
+		private bool $hasYield,
+		private bool $isAlwaysTerminating,
+		private array $exitPoints,
+		private array $throwPoints,
+		private array $impurePoints,
+		private array $endStatements = [],
+	)
+	{
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+	public function hasYield(): bool
+	{
+		return $this->hasYield;
+	}
+
+	public function isAlwaysTerminating(): bool
+	{
+		return $this->isAlwaysTerminating;
+	}
+
+	public function filterOutLoopExitPoints(): self
+	{
+		if (!$this->isAlwaysTerminating) {
+			return $this;
+		}
+
+		foreach ($this->exitPoints as $exitPoint) {
+			$statement = $exitPoint->getStatement();
+			if (!$statement instanceof Stmt\Break_ && !$statement instanceof Stmt\Continue_) {
+				continue;
+			}
+
+			$num = $statement->num;
+			if (!$num instanceof Int_) {
+				return new self($this->scope, $this->hasYield, false, $this->exitPoints, $this->throwPoints, $this->impurePoints);
+			}
+
+			if ($num->value !== 1) {
+				continue;
+			}
+
+			return new self($this->scope, $this->hasYield, false, $this->exitPoints, $this->throwPoints, $this->impurePoints);
+		}
+
+		return $this;
+	}
+
+	/**
+	 * @return StatementExitPoint[]
+	 */
+	public function getExitPoints(): array
+	{
+		return $this->exitPoints;
+	}
+
+	/**
+	 * @param class-string<Stmt\Continue_>|class-string<Stmt\Break_> $stmtClass
+	 * @return list<StatementExitPoint>
+	 */
+	public function getExitPointsByType(string $stmtClass): array
+	{
+		$exitPoints = [];
+		foreach ($this->exitPoints as $exitPoint) {
+			$statement = $exitPoint->getStatement();
+			if (!$statement instanceof $stmtClass) {
+				continue;
+			}
+
+			$value = $statement->num;
+			if ($value === null) {
+				$exitPoints[] = $exitPoint;
+				continue;
+			}
+
+			if (!$value instanceof Int_) {
+				$exitPoints[] = $exitPoint;
+				continue;
+			}
+
+			$value = $value->value;
+			if ($value !== 1) {
+				continue;
+			}
+
+			$exitPoints[] = $exitPoint;
+		}
+
+		return $exitPoints;
+	}
+
+	/**
+	 * @return list<StatementExitPoint>
+	 */
+	public function getExitPointsForOuterLoop(): array
+	{
+		$exitPoints = [];
+		foreach ($this->exitPoints as $exitPoint) {
+			$statement = $exitPoint->getStatement();
+			if (!$statement instanceof Stmt\Continue_ && !$statement instanceof Stmt\Break_) {
+				$exitPoints[] = $exitPoint;
+				continue;
+			}
+			if ($statement->num === null) {
+				continue;
+			}
+			if (!$statement->num instanceof Int_) {
+				continue;
+			}
+			$value = $statement->num->value;
+			if ($value === 1) {
+				continue;
+			}
+
+			$newNode = null;
+			if ($value > 2) {
+				$newNode = new Int_($value - 1);
+			}
+			if ($statement instanceof Stmt\Continue_) {
+				$newStatement = new Stmt\Continue_($newNode);
+			} else {
+				$newStatement = new Stmt\Break_($newNode);
+			}
+
+			$exitPoints[] = new StatementExitPoint($newStatement, $exitPoint->getScope());
+		}
+
+		return $exitPoints;
+	}
+
+	/**
+	 * @return ThrowPoint[]
+	 */
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	/**
+	 * @return ImpurePoint[]
+	 */
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	/**
+	 * Top-level StatementResult represents the state of the code
+	 * at the end of control flow statements like If_ or TryCatch.
+	 *
+	 * It shows how Scope etc. looks like after If_ no matter
+	 * which code branch was executed.
+	 *
+	 * For If_, "end statements" contain the state of the code
+	 * at the end of each branch - if, elseifs, else, including the last
+	 * statement node in each branch.
+	 *
+	 * For nested ifs, end statements try to contain the last non-control flow
+	 * statement like Return_ or Throw_, instead of If_, TryCatch, or Foreach_.
+	 *
+	 * @return EndStatementResult[]
+	 */
+	public function getEndStatements(): array
+	{
+		return $this->endStatements;
+	}
+
+}
diff --git a/src/Analyser/ThrowPoint.php b/src/Analyser/ThrowPoint.php
new file mode 100644
index 00000000..c20efde7
--- /dev/null
+++ b/src/Analyser/ThrowPoint.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PhpParser\Node;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use Throwable;
+
+/**
+ * @api
+ */
+final class ThrowPoint
+{
+
+	/**
+	 * @param Node\Expr|Node\Stmt $node
+	 */
+	private function __construct(
+		private MutatingScope $scope,
+		private Type $type,
+		private Node $node,
+		private bool $explicit,
+		private bool $canContainAnyThrowable,
+	)
+	{
+	}
+
+	/**
+	 * @param Node\Expr|Node\Stmt $node
+	 */
+	public static function createExplicit(MutatingScope $scope, Type $type, Node $node, bool $canContainAnyThrowable): self
+	{
+		return new self($scope, $type, $node, true, $canContainAnyThrowable);
+	}
+
+	/**
+	 * @param Node\Expr|Node\Stmt $node
+	 */
+	public static function createImplicit(MutatingScope $scope, Node $node): self
+	{
+		return new self($scope, new ObjectType(Throwable::class), $node, false, true);
+	}
+
+	public function getScope(): MutatingScope
+	{
+		return $this->scope;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	/**
+	 * @return Node\Expr|Node\Stmt
+	 */
+	public function getNode()
+	{
+		return $this->node;
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->explicit;
+	}
+
+	public function canContainAnyThrowable(): bool
+	{
+		return $this->canContainAnyThrowable;
+	}
+
+	public function subtractCatchType(Type $catchType): self
+	{
+		return new self($this->scope, TypeCombinator::remove($this->type, $catchType), $this->node, $this->explicit, $this->canContainAnyThrowable);
+	}
+
+}
diff --git a/src/Analyser/TypeSpecifier.php b/src/Analyser/TypeSpecifier.php
new file mode 100644
index 00000000..015be7a8
--- /dev/null
+++ b/src/Analyser/TypeSpecifier.php
@@ -0,0 +1,2451 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use Countable;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
+use PhpParser\Node\Expr\BinaryOp\BooleanOr;
+use PhpParser\Node\Expr\BinaryOp\LogicalAnd;
+use PhpParser\Node\Expr\BinaryOp\LogicalOr;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Instanceof_;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PhpParser\Node\Name;
+use PHPStan\Node\Expr\AlwaysRememberedExpr;
+use PHPStan\Node\IssetExpr;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\ResolvedFunctionVariant;
+use PHPStan\Rules\Arrays\AllowedArrayKeysTypes;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\HasOffsetType;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MethodTypeSpecifyingExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NonexistentParentClassType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StaticMethodTypeSpecifyingExtension;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function array_reverse;
+use function array_shift;
+use function count;
+use function in_array;
+use function is_string;
+use function strtolower;
+use function substr;
+use const COUNT_NORMAL;
+
+final class TypeSpecifier
+{
+
+	/** @var MethodTypeSpecifyingExtension[][]|null */
+	private ?array $methodTypeSpecifyingExtensionsByClass = null;
+
+	/** @var StaticMethodTypeSpecifyingExtension[][]|null */
+	private ?array $staticMethodTypeSpecifyingExtensionsByClass = null;
+
+	/**
+	 * @param FunctionTypeSpecifyingExtension[] $functionTypeSpecifyingExtensions
+	 * @param MethodTypeSpecifyingExtension[] $methodTypeSpecifyingExtensions
+	 * @param StaticMethodTypeSpecifyingExtension[] $staticMethodTypeSpecifyingExtensions
+	 */
+	public function __construct(
+		private ExprPrinter $exprPrinter,
+		private ReflectionProvider $reflectionProvider,
+		private PhpVersion $phpVersion,
+		private array $functionTypeSpecifyingExtensions,
+		private array $methodTypeSpecifyingExtensions,
+		private array $staticMethodTypeSpecifyingExtensions,
+		private bool $rememberPossiblyImpureFunctionValues,
+	)
+	{
+		foreach (array_merge($functionTypeSpecifyingExtensions, $methodTypeSpecifyingExtensions, $staticMethodTypeSpecifyingExtensions) as $extension) {
+			if (!($extension instanceof TypeSpecifierAwareExtension)) {
+				continue;
+			}
+
+			$extension->setTypeSpecifier($this);
+		}
+	}
+
+	/** @api */
+	public function specifyTypesInCondition(
+		Scope $scope,
+		Expr $expr,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		if ($expr instanceof Expr\CallLike && $expr->isFirstClassCallable()) {
+			return (new SpecifiedTypes([], []))->setRootExpr($expr);
+		}
+
+		if ($expr instanceof Instanceof_) {
+			$exprNode = $expr->expr;
+			if ($expr->class instanceof Name) {
+				$className = (string) $expr->class;
+				$lowercasedClassName = strtolower($className);
+				if ($lowercasedClassName === 'self' && $scope->isInClass()) {
+					$type = new ObjectType($scope->getClassReflection()->getName());
+				} elseif ($lowercasedClassName === 'static' && $scope->isInClass()) {
+					$type = new StaticType($scope->getClassReflection());
+				} elseif ($lowercasedClassName === 'parent') {
+					if (
+						$scope->isInClass()
+						&& $scope->getClassReflection()->getParentClass() !== null
+					) {
+						$type = new ObjectType($scope->getClassReflection()->getParentClass()->getName());
+					} else {
+						$type = new NonexistentParentClassType();
+					}
+				} else {
+					$type = new ObjectType($className);
+				}
+				return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
+			}
+
+			$classType = $scope->getType($expr->class);
+			$uncertainty = false;
+			$type = TypeTraverser::map($classType, static function (Type $type, callable $traverse) use (&$uncertainty): Type {
+				if ($type instanceof UnionType || $type instanceof IntersectionType) {
+					return $traverse($type);
+				}
+				if ($type->getObjectClassNames() !== []) {
+					$uncertainty = true;
+					return $type;
+				}
+				if ($type instanceof GenericClassStringType) {
+					$uncertainty = true;
+					return $type->getGenericType();
+				}
+				if ($type instanceof ConstantStringType) {
+					return new ObjectType($type->getValue());
+				}
+				return new MixedType();
+			});
+
+			if (!$type->isSuperTypeOf(new MixedType())->yes()) {
+				if ($context->true()) {
+					$type = TypeCombinator::intersect(
+						$type,
+						new ObjectWithoutClassType(),
+					);
+					return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
+				} elseif ($context->false() && !$uncertainty) {
+					$exprType = $scope->getType($expr->expr);
+					if (!$type->isSuperTypeOf($exprType)->yes()) {
+						return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
+					}
+				}
+			}
+			if ($context->true()) {
+				return $this->create($exprNode, new ObjectWithoutClassType(), $context, $scope)->setRootExpr($exprNode);
+			}
+		} elseif ($expr instanceof Node\Expr\BinaryOp\Identical) {
+			return $this->resolveIdentical($expr, $scope, $context);
+
+		} elseif ($expr instanceof Node\Expr\BinaryOp\NotIdentical) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Identical($expr->left, $expr->right)),
+				$context,
+			)->setRootExpr($expr);
+		} elseif ($expr instanceof Expr\Cast\Bool_) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BinaryOp\Equal($expr->expr, new ConstFetch(new Name\FullyQualified('true'))),
+				$context,
+			)->setRootExpr($expr);
+		} elseif ($expr instanceof Expr\Cast\String_) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\String_('')),
+				$context,
+			)->setRootExpr($expr);
+		} elseif ($expr instanceof Expr\Cast\Int_) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\LNumber(0)),
+				$context,
+			)->setRootExpr($expr);
+		} elseif ($expr instanceof Expr\Cast\Double) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\DNumber(0.0)),
+				$context,
+			)->setRootExpr($expr);
+		} elseif ($expr instanceof Node\Expr\BinaryOp\Equal) {
+			return $this->resolveEqual($expr, $scope, $context);
+		} elseif ($expr instanceof Node\Expr\BinaryOp\NotEqual) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Equal($expr->left, $expr->right)),
+				$context,
+			)->setRootExpr($expr);
+
+		} elseif ($expr instanceof Node\Expr\BinaryOp\Smaller || $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual) {
+
+			if (
+				$expr->left instanceof FuncCall
+				&& count($expr->left->getArgs()) >= 1
+				&& $expr->left->name instanceof Name
+				&& in_array(strtolower((string) $expr->left->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
+				&& (
+					!$expr->right instanceof FuncCall
+					|| !$expr->right->name instanceof Name
+					|| !in_array(strtolower((string) $expr->right->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
+				)
+			) {
+				$inverseOperator = $expr instanceof Node\Expr\BinaryOp\Smaller
+					? new Node\Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left)
+					: new Node\Expr\BinaryOp\Smaller($expr->right, $expr->left);
+
+				return $this->specifyTypesInCondition(
+					$scope,
+					new Node\Expr\BooleanNot($inverseOperator),
+					$context,
+				)->setRootExpr($expr);
+			}
+
+			$orEqual = $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual;
+			$offset = $orEqual ? 0 : 1;
+			$leftType = $scope->getType($expr->left);
+			$result = (new SpecifiedTypes([], []))->setRootExpr($expr);
+
+			if (
+				!$context->null()
+				&& $expr->right instanceof FuncCall
+				&& count($expr->right->getArgs()) >= 1
+				&& $expr->right->name instanceof Name
+				&& in_array(strtolower((string) $expr->right->name), ['count', 'sizeof'], true)
+				&& $leftType->isInteger()->yes()
+			) {
+				$argType = $scope->getType($expr->right->getArgs()[0]->value);
+
+				if ($argType instanceof UnionType) {
+					$sizeType = null;
+					if ($leftType instanceof ConstantIntegerType) {
+						if ($orEqual) {
+							$sizeType = IntegerRangeType::createAllGreaterThanOrEqualTo($leftType->getValue());
+						} else {
+							$sizeType = IntegerRangeType::createAllGreaterThan($leftType->getValue());
+						}
+					} elseif ($leftType instanceof IntegerRangeType) {
+						$sizeType = $leftType;
+					}
+
+					$narrowed = $this->narrowUnionByArraySize($expr->right, $argType, $sizeType, $context, $scope, $expr);
+					if ($narrowed !== null) {
+						return $narrowed;
+					}
+				}
+
+				if (
+					$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
+					|| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
+				) {
+					if ($context->truthy() && $argType->isArray()->maybe()) {
+						$countables = [];
+						if ($argType instanceof UnionType) {
+							$countableInterface = new ObjectType(Countable::class);
+							foreach ($argType->getTypes() as $innerType) {
+								if ($innerType->isArray()->yes()) {
+									$innerType = TypeCombinator::intersect(new NonEmptyArrayType(), $innerType);
+									$countables[] = $innerType;
+								}
+
+								if (!$countableInterface->isSuperTypeOf($innerType)->yes()) {
+									continue;
+								}
+
+								$countables[] = $innerType;
+							}
+						}
+
+						if (count($countables) > 0) {
+							$countableType = TypeCombinator::union(...$countables);
+
+							return $this->create($expr->right->getArgs()[0]->value, $countableType, $context, $scope)->setRootExpr($expr);
+						}
+					}
+
+					if ($argType->isArray()->yes()) {
+						$newType = new NonEmptyArrayType();
+						if ($context->true() && $argType->isList()->yes()) {
+							$newType = TypeCombinator::intersect($newType, new AccessoryArrayListType());
+						}
+
+						$result = $result->unionWith(
+							$this->create($expr->right->getArgs()[0]->value, $newType, $context, $scope)->setRootExpr($expr),
+						);
+					}
+				}
+			}
+
+			if (
+				!$context->null()
+				&& $expr->right instanceof FuncCall
+				&& count($expr->right->getArgs()) >= 3
+				&& $expr->right->name instanceof Name
+				&& in_array(strtolower((string) $expr->right->name), ['preg_match'], true)
+				&& IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($leftType)->yes()
+			) {
+				return $this->specifyTypesInCondition(
+					$scope,
+					new Expr\BinaryOp\NotIdentical($expr->right, new ConstFetch(new Name('false'))),
+					$context,
+				)->setRootExpr($expr);
+			}
+
+			if (
+				!$context->null()
+				&& $expr->right instanceof FuncCall
+				&& count($expr->right->getArgs()) === 1
+				&& $expr->right->name instanceof Name
+				&& in_array(strtolower((string) $expr->right->name), ['strlen', 'mb_strlen'], true)
+				&& $leftType->isInteger()->yes()
+			) {
+				if (
+					$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
+					|| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
+				) {
+					$argType = $scope->getType($expr->right->getArgs()[0]->value);
+					if ($argType->isString()->yes()) {
+						$accessory = new AccessoryNonEmptyStringType();
+
+						if (IntegerRangeType::createAllGreaterThanOrEqualTo(2 - $offset)->isSuperTypeOf($leftType)->yes()) {
+							$accessory = new AccessoryNonFalsyStringType();
+						}
+
+						$result = $result->unionWith($this->create($expr->right->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr));
+					}
+				}
+			}
+
+			if ($leftType instanceof ConstantIntegerType) {
+				if ($expr->right instanceof Expr\PostInc) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->right->var,
+						IntegerRangeType::fromInterval($leftType->getValue(), null, $offset + 1),
+						$context,
+					));
+				} elseif ($expr->right instanceof Expr\PostDec) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->right->var,
+						IntegerRangeType::fromInterval($leftType->getValue(), null, $offset - 1),
+						$context,
+					));
+				} elseif ($expr->right instanceof Expr\PreInc || $expr->right instanceof Expr\PreDec) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->right->var,
+						IntegerRangeType::fromInterval($leftType->getValue(), null, $offset),
+						$context,
+					));
+				}
+			}
+
+			$rightType = $scope->getType($expr->right);
+			if ($rightType instanceof ConstantIntegerType) {
+				if ($expr->left instanceof Expr\PostInc) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->left->var,
+						IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset + 1),
+						$context,
+					));
+				} elseif ($expr->left instanceof Expr\PostDec) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->left->var,
+						IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset - 1),
+						$context,
+					));
+				} elseif ($expr->left instanceof Expr\PreInc || $expr->left instanceof Expr\PreDec) {
+					$result = $result->unionWith($this->createRangeTypes(
+						$expr,
+						$expr->left->var,
+						IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset),
+						$context,
+					));
+				}
+			}
+
+			if ($context->true()) {
+				if (!$expr->left instanceof Node\Scalar) {
+					$result = $result->unionWith(
+						$this->create(
+							$expr->left,
+							$orEqual ? $rightType->getSmallerOrEqualType($this->phpVersion) : $rightType->getSmallerType($this->phpVersion),
+							TypeSpecifierContext::createTruthy(),
+							$scope,
+						)->setRootExpr($expr),
+					);
+				}
+				if (!$expr->right instanceof Node\Scalar) {
+					$result = $result->unionWith(
+						$this->create(
+							$expr->right,
+							$orEqual ? $leftType->getGreaterOrEqualType($this->phpVersion) : $leftType->getGreaterType($this->phpVersion),
+							TypeSpecifierContext::createTruthy(),
+							$scope,
+						)->setRootExpr($expr),
+					);
+				}
+			} elseif ($context->false()) {
+				if (!$expr->left instanceof Node\Scalar) {
+					$result = $result->unionWith(
+						$this->create(
+							$expr->left,
+							$orEqual ? $rightType->getGreaterType($this->phpVersion) : $rightType->getGreaterOrEqualType($this->phpVersion),
+							TypeSpecifierContext::createTruthy(),
+							$scope,
+						)->setRootExpr($expr),
+					);
+				}
+				if (!$expr->right instanceof Node\Scalar) {
+					$result = $result->unionWith(
+						$this->create(
+							$expr->right,
+							$orEqual ? $leftType->getSmallerType($this->phpVersion) : $leftType->getSmallerOrEqualType($this->phpVersion),
+							TypeSpecifierContext::createTruthy(),
+							$scope,
+						)->setRootExpr($expr),
+					);
+				}
+			}
+
+			return $result;
+
+		} elseif ($expr instanceof Node\Expr\BinaryOp\Greater) {
+			return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Smaller($expr->right, $expr->left), $context)->setRootExpr($expr);
+
+		} elseif ($expr instanceof Node\Expr\BinaryOp\GreaterOrEqual) {
+			return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left), $context)->setRootExpr($expr);
+
+		} elseif ($expr instanceof FuncCall && $expr->name instanceof Name) {
+			if ($this->reflectionProvider->hasFunction($expr->name, $scope)) {
+				$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
+				foreach ($this->getFunctionTypeSpecifyingExtensions() as $extension) {
+					if (!$extension->isFunctionSupported($functionReflection, $expr, $context)) {
+						continue;
+					}
+
+					return $extension->specifyTypes($functionReflection, $expr, $scope, $context);
+				}
+
+				// lazy create parametersAcceptor, as creation can be expensive
+				$parametersAcceptor = null;
+				if (count($expr->getArgs()) > 0) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
+
+					$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+
+				$assertions = $functionReflection->getAsserts();
+				if ($assertions->getAll() !== []) {
+					$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
+
+					$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
+						$type,
+						$parametersAcceptor->getResolvedTemplateTypeMap(),
+						$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+						TemplateTypeVariance::createInvariant(),
+					));
+					$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+			}
+
+			return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+		} elseif ($expr instanceof MethodCall && $expr->name instanceof Node\Identifier) {
+			$methodCalledOnType = $scope->getType($expr->var);
+			$methodReflection = $scope->getMethodReflection($methodCalledOnType, $expr->name->name);
+			if ($methodReflection !== null) {
+				$referencedClasses = $methodCalledOnType->getObjectClassNames();
+				if (
+					count($referencedClasses) === 1
+					&& $this->reflectionProvider->hasClass($referencedClasses[0])
+				) {
+					$methodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
+					foreach ($this->getMethodTypeSpecifyingExtensionsForClass($methodClassReflection->getName()) as $extension) {
+						if (!$extension->isMethodSupported($methodReflection, $expr, $context)) {
+							continue;
+						}
+
+						return $extension->specifyTypes($methodReflection, $expr, $scope, $context);
+					}
+				}
+
+				// lazy create parametersAcceptor, as creation can be expensive
+				$parametersAcceptor = null;
+				if (count($expr->getArgs()) > 0) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
+
+					$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+
+				$assertions = $methodReflection->getAsserts();
+				if ($assertions->getAll() !== []) {
+					$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
+
+					$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
+						$type,
+						$parametersAcceptor->getResolvedTemplateTypeMap(),
+						$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+						TemplateTypeVariance::createInvariant(),
+					));
+					$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+			}
+
+			return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+		} elseif ($expr instanceof StaticCall && $expr->name instanceof Node\Identifier) {
+			if ($expr->class instanceof Name) {
+				$calleeType = $scope->resolveTypeByName($expr->class);
+			} else {
+				$calleeType = $scope->getType($expr->class);
+			}
+
+			$staticMethodReflection = $scope->getMethodReflection($calleeType, $expr->name->name);
+			if ($staticMethodReflection !== null) {
+				$referencedClasses = $calleeType->getObjectClassNames();
+				if (
+					count($referencedClasses) === 1
+					&& $this->reflectionProvider->hasClass($referencedClasses[0])
+				) {
+					$staticMethodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
+					foreach ($this->getStaticMethodTypeSpecifyingExtensionsForClass($staticMethodClassReflection->getName()) as $extension) {
+						if (!$extension->isStaticMethodSupported($staticMethodReflection, $expr, $context)) {
+							continue;
+						}
+
+						return $extension->specifyTypes($staticMethodReflection, $expr, $scope, $context);
+					}
+				}
+
+				// lazy create parametersAcceptor, as creation can be expensive
+				$parametersAcceptor = null;
+				if (count($expr->getArgs()) > 0) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
+
+					$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+
+				$assertions = $staticMethodReflection->getAsserts();
+				if ($assertions->getAll() !== []) {
+					$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
+
+					$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
+						$type,
+						$parametersAcceptor->getResolvedTemplateTypeMap(),
+						$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+						TemplateTypeVariance::createInvariant(),
+					));
+					$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+			}
+
+			return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+		} elseif ($expr instanceof BooleanAnd || $expr instanceof LogicalAnd) {
+			if (!$scope instanceof MutatingScope) {
+				throw new ShouldNotHappenException();
+			}
+			$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
+			$rightScope = $scope->filterByTruthyValue($expr->left);
+			$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
+			$types = $context->true() ? $leftTypes->unionWith($rightTypes) : $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope));
+			if ($context->false()) {
+				return (new SpecifiedTypes(
+					$types->getSureTypes(),
+					$types->getSureNotTypes(),
+				))->setNewConditionalExpressionHolders(array_merge(
+					$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
+					$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
+					$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
+					$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
+				))->setRootExpr($expr);
+			}
+
+			return $types;
+		} elseif ($expr instanceof BooleanOr || $expr instanceof LogicalOr) {
+			if (!$scope instanceof MutatingScope) {
+				throw new ShouldNotHappenException();
+			}
+			$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
+			$rightScope = $scope->filterByFalseyValue($expr->left);
+			$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
+			$types = $context->true() ? $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope)) : $leftTypes->unionWith($rightTypes);
+			if ($context->true()) {
+				return (new SpecifiedTypes(
+					$types->getSureTypes(),
+					$types->getSureNotTypes(),
+				))->setNewConditionalExpressionHolders(array_merge(
+					$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
+					$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
+					$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
+					$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
+				))->setRootExpr($expr);
+			}
+
+			return $types;
+		} elseif ($expr instanceof Node\Expr\BooleanNot && !$context->null()) {
+			return $this->specifyTypesInCondition($scope, $expr->expr, $context->negate())->setRootExpr($expr);
+		} elseif ($expr instanceof Node\Expr\Assign) {
+			if (!$scope instanceof MutatingScope) {
+				throw new ShouldNotHappenException();
+			}
+			if ($context->null()) {
+				return $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->expr, $context)->setRootExpr($expr);
+			}
+
+			return $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->var, $context)->setRootExpr($expr);
+		} elseif (
+			$expr instanceof Expr\Isset_
+			&& count($expr->vars) > 0
+			&& !$context->null()
+		) {
+			// rewrite multi param isset() to and-chained single param isset()
+			if (count($expr->vars) > 1) {
+				$issets = [];
+				foreach ($expr->vars as $var) {
+					$issets[] = new Expr\Isset_([$var], $expr->getAttributes());
+				}
+
+				$first = array_shift($issets);
+				$andChain = null;
+				foreach ($issets as $isset) {
+					if ($andChain === null) {
+						$andChain = new BooleanAnd($first, $isset);
+						continue;
+					}
+
+					$andChain = new BooleanAnd($andChain, $isset);
+				}
+
+				if ($andChain === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $this->specifyTypesInCondition($scope, $andChain, $context)->setRootExpr($expr);
+			}
+
+			$issetExpr = $expr->vars[0];
+
+			if (!$context->true()) {
+				if (!$scope instanceof MutatingScope) {
+					throw new ShouldNotHappenException();
+				}
+
+				$isset = $scope->issetCheck($issetExpr, static fn () => true);
+
+				if ($isset === false) {
+					return new SpecifiedTypes();
+				}
+
+				$type = $scope->getType($issetExpr);
+				$isNullable = !$type->isNull()->no();
+				$exprType = $this->create(
+					$issetExpr,
+					new NullType(),
+					$context->negate(),
+					$scope,
+				)->setRootExpr($expr);
+
+				if ($issetExpr instanceof Expr\Variable && is_string($issetExpr->name)) {
+					if ($isset === true) {
+						if ($isNullable) {
+							return $exprType;
+						}
+
+						// variable cannot exist in !isset()
+						return $exprType->unionWith($this->create(
+							new IssetExpr($issetExpr),
+							new NullType(),
+							$context,
+							$scope,
+						))->setRootExpr($expr);
+					}
+
+					if ($isNullable) {
+						// reduces variable certainty to maybe
+						return $exprType->unionWith($this->create(
+							new IssetExpr($issetExpr),
+							new NullType(),
+							$context->negate(),
+							$scope,
+						))->setRootExpr($expr);
+					}
+
+					// variable cannot exist in !isset()
+					return $this->create(
+						new IssetExpr($issetExpr),
+						new NullType(),
+						$context,
+						$scope,
+					)->setRootExpr($expr);
+				}
+
+				if ($isNullable && $isset === true) {
+					return $exprType;
+				}
+
+				return new SpecifiedTypes();
+			}
+
+			$tmpVars = [$issetExpr];
+			while (
+				$issetExpr instanceof ArrayDimFetch
+				|| $issetExpr instanceof PropertyFetch
+				|| (
+					$issetExpr instanceof StaticPropertyFetch
+					&& $issetExpr->class instanceof Expr
+				)
+			) {
+				if ($issetExpr instanceof StaticPropertyFetch) {
+					/** @var Expr $issetExpr */
+					$issetExpr = $issetExpr->class;
+				} else {
+					$issetExpr = $issetExpr->var;
+				}
+				$tmpVars[] = $issetExpr;
+			}
+			$vars = array_reverse($tmpVars);
+
+			$types = new SpecifiedTypes();
+			foreach ($vars as $var) {
+
+				if ($var instanceof Expr\Variable && is_string($var->name)) {
+					if ($scope->hasVariableType($var->name)->no()) {
+						return (new SpecifiedTypes([], []))->setRootExpr($expr);
+					}
+				}
+
+				if (
+					$var instanceof ArrayDimFetch
+					&& $var->dim !== null
+					&& !$scope->getType($var->var) instanceof MixedType
+				) {
+					$dimType = $scope->getType($var->dim);
+
+					if ($dimType instanceof ConstantIntegerType || $dimType instanceof ConstantStringType) {
+						$types = $types->unionWith(
+							$this->create(
+								$var->var,
+								new HasOffsetType($dimType),
+								$context,
+								$scope,
+							)->setRootExpr($expr),
+						);
+					} else {
+						$varType = $scope->getType($var->var);
+						$narrowedKey = AllowedArrayKeysTypes::narrowOffsetKeyType($varType, $dimType);
+						if ($narrowedKey !== null) {
+							$types = $types->unionWith(
+								$this->create(
+									$var->dim,
+									$narrowedKey,
+									$context,
+									$scope,
+								)->setRootExpr($expr),
+							);
+						}
+					}
+				}
+
+				if (
+					$var instanceof PropertyFetch
+					&& $var->name instanceof Node\Identifier
+				) {
+					$types = $types->unionWith(
+						$this->create($var->var, new IntersectionType([
+							new ObjectWithoutClassType(),
+							new HasPropertyType($var->name->toString()),
+						]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
+					);
+				} elseif (
+					$var instanceof StaticPropertyFetch
+					&& $var->class instanceof Expr
+					&& $var->name instanceof Node\VarLikeIdentifier
+				) {
+					$types = $types->unionWith(
+						$this->create($var->class, new IntersectionType([
+							new ObjectWithoutClassType(),
+							new HasPropertyType($var->name->toString()),
+						]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
+					);
+				}
+
+				$types = $types->unionWith(
+					$this->create($var, new NullType(), TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr),
+				);
+			}
+
+			return $types;
+		} elseif (
+			$expr instanceof Expr\BinaryOp\Coalesce
+			&& !$context->null()
+		) {
+			if (!$context->true()) {
+				if (!$scope instanceof MutatingScope) {
+					throw new ShouldNotHappenException();
+				}
+
+				$isset = $scope->issetCheck($expr->left, static fn () => true);
+
+				if ($isset !== true) {
+					return new SpecifiedTypes();
+				}
+
+				return $this->create(
+					$expr->left,
+					new NullType(),
+					$context->negate(),
+					$scope,
+				)->setRootExpr($expr);
+			}
+
+			if ((new ConstantBooleanType(false))->isSuperTypeOf($scope->getType($expr->right)->toBoolean())->yes()) {
+				return $this->create(
+					$expr->left,
+					new NullType(),
+					TypeSpecifierContext::createFalse(),
+					$scope,
+				)->setRootExpr($expr);
+			}
+
+		} elseif (
+			$expr instanceof Expr\Empty_
+		) {
+			if (!$scope instanceof MutatingScope) {
+				throw new ShouldNotHappenException();
+			}
+
+			$isset = $scope->issetCheck($expr->expr, static fn () => true);
+			if ($isset === false) {
+				return new SpecifiedTypes();
+			}
+
+			return $this->specifyTypesInCondition($scope, new BooleanOr(
+				new Expr\BooleanNot(new Expr\Isset_([$expr->expr])),
+				new Expr\BooleanNot($expr->expr),
+			), $context)->setRootExpr($expr);
+		} elseif ($expr instanceof Expr\ErrorSuppress) {
+			return $this->specifyTypesInCondition($scope, $expr->expr, $context)->setRootExpr($expr);
+		} elseif (
+			$expr instanceof Expr\Ternary
+			&& !$context->null()
+			&& $scope->getType($expr->else)->isFalse()->yes()
+		) {
+			$conditionExpr = $expr->cond;
+			if ($expr->if !== null) {
+				$conditionExpr = new BooleanAnd($conditionExpr, $expr->if);
+			}
+
+			return $this->specifyTypesInCondition($scope, $conditionExpr, $context)->setRootExpr($expr);
+
+		} elseif ($expr instanceof Expr\NullsafePropertyFetch && !$context->null()) {
+			$types = $this->specifyTypesInCondition(
+				$scope,
+				new BooleanAnd(
+					new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
+					new PropertyFetch($expr->var, $expr->name),
+				),
+				$context,
+			)->setRootExpr($expr);
+
+			$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+			return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
+		} elseif ($expr instanceof Expr\NullsafeMethodCall && !$context->null()) {
+			$types = $this->specifyTypesInCondition(
+				$scope,
+				new BooleanAnd(
+					new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
+					new MethodCall($expr->var, $expr->name, $expr->args),
+				),
+				$context,
+			)->setRootExpr($expr);
+
+			$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+			return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
+		} elseif (
+			$expr instanceof Expr\New_
+			&& $expr->class instanceof Name
+			&& $this->reflectionProvider->hasClass($expr->class->toString())
+		) {
+			$classReflection = $this->reflectionProvider->getClass($expr->class->toString());
+
+			if ($classReflection->hasConstructor()) {
+				$methodReflection = $classReflection->getConstructor();
+				$asserts = $methodReflection->getAsserts();
+
+				if ($asserts->getAll() !== []) {
+					$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
+
+					$asserts = $asserts->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
+						$type,
+						$parametersAcceptor->getResolvedTemplateTypeMap(),
+						$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+						TemplateTypeVariance::createInvariant(),
+					));
+
+					$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
+
+					if ($specifiedTypes !== null) {
+						return $specifiedTypes;
+					}
+				}
+			}
+		} elseif (!$context->null()) {
+			return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
+		}
+
+		return (new SpecifiedTypes([], []))->setRootExpr($expr);
+	}
+
+	private function narrowUnionByArraySize(FuncCall $countFuncCall, UnionType $argType, ?Type $sizeType, TypeSpecifierContext $context, Scope $scope, ?Expr $rootExpr): ?SpecifiedTypes
+	{
+		if ($sizeType === null) {
+			return null;
+		}
+
+		if (count($countFuncCall->getArgs()) === 1) {
+			$isNormalCount = TrinaryLogic::createYes();
+		} else {
+			$mode = $scope->getType($countFuncCall->getArgs()[1]->value);
+			$isNormalCount = (new ConstantIntegerType(COUNT_NORMAL))->isSuperTypeOf($mode)->result->or($argType->getIterableValueType()->isArray()->negate());
+		}
+
+		if (
+			$isNormalCount->yes()
+			&& $argType->isConstantArray()->yes()
+		) {
+			$result = [];
+			foreach ($argType->getTypes() as $innerType) {
+				$arraySize = $innerType->getArraySize();
+				$isSize = $sizeType->isSuperTypeOf($arraySize);
+				if ($context->truthy()) {
+					if ($isSize->no()) {
+						continue;
+					}
+
+					$constArray = $this->turnListIntoConstantArray($countFuncCall, $innerType, $sizeType, $scope);
+					if ($constArray !== null) {
+						$innerType = $constArray;
+					}
+				}
+				if ($context->falsey()) {
+					if (!$isSize->yes()) {
+						continue;
+					}
+				}
+
+				$result[] = $innerType;
+			}
+
+			return $this->create($countFuncCall->getArgs()[0]->value, TypeCombinator::union(...$result), $context, $scope)->setRootExpr($rootExpr);
+		}
+
+		return null;
+	}
+
+	private function turnListIntoConstantArray(FuncCall $countFuncCall, Type $type, Type $sizeType, Scope $scope): ?Type
+	{
+		$argType = $scope->getType($countFuncCall->getArgs()[0]->value);
+
+		if (count($countFuncCall->getArgs()) === 1) {
+			$isNormalCount = TrinaryLogic::createYes();
+		} else {
+			$mode = $scope->getType($countFuncCall->getArgs()[1]->value);
+			$isNormalCount = (new ConstantIntegerType(COUNT_NORMAL))->isSuperTypeOf($mode)->result->or($argType->getIterableValueType()->isArray()->negate());
+		}
+
+		if (
+			$isNormalCount->yes()
+			&& $type->isList()->yes()
+			&& $sizeType instanceof ConstantIntegerType
+			&& $sizeType->getValue() < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT
+		) {
+			// turn optional offsets non-optional
+			$valueTypesBuilder = ConstantArrayTypeBuilder::createEmpty();
+			for ($i = 0; $i < $sizeType->getValue(); $i++) {
+				$offsetType = new ConstantIntegerType($i);
+				$valueTypesBuilder->setOffsetValueType($offsetType, $type->getOffsetValueType($offsetType));
+			}
+			return $valueTypesBuilder->getArray();
+		}
+
+		if (
+			$isNormalCount->yes()
+			&& $type->isList()->yes()
+			&& $sizeType instanceof IntegerRangeType
+			&& $sizeType->getMin() !== null
+		) {
+			// turn optional offsets non-optional
+			$valueTypesBuilder = ConstantArrayTypeBuilder::createEmpty();
+			for ($i = 0; $i < $sizeType->getMin(); $i++) {
+				$offsetType = new ConstantIntegerType($i);
+				$valueTypesBuilder->setOffsetValueType($offsetType, $type->getOffsetValueType($offsetType));
+			}
+			if ($sizeType->getMax() !== null) {
+				for ($i = $sizeType->getMin(); $i < $sizeType->getMax(); $i++) {
+					$offsetType = new ConstantIntegerType($i);
+					$valueTypesBuilder->setOffsetValueType($offsetType, $type->getOffsetValueType($offsetType), true);
+				}
+			} elseif ($type->isConstantArray()->yes()) {
+				for ($i = $sizeType->getMin();; $i++) {
+					$offsetType = new ConstantIntegerType($i);
+					$hasOffset = $type->hasOffsetValueType($offsetType);
+					if ($hasOffset->no()) {
+						break;
+					}
+					$valueTypesBuilder->setOffsetValueType($offsetType, $type->getOffsetValueType($offsetType), !$hasOffset->yes());
+				}
+			} else {
+				return null;
+			}
+
+			$arrayType = $valueTypesBuilder->getArray();
+			if ($arrayType->isIterableAtLeastOnce()->yes()) {
+				return $arrayType;
+			}
+		}
+
+		return null;
+	}
+
+	private function specifyTypesForConstantBinaryExpression(
+		Expr $exprNode,
+		Type $constantType,
+		TypeSpecifierContext $context,
+		Scope $scope,
+		Expr $rootExpr,
+	): ?SpecifiedTypes
+	{
+		if (!$context->null() && $constantType->isFalse()->yes()) {
+			$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
+			if ($exprNode instanceof Expr\NullsafeMethodCall || $exprNode instanceof Expr\NullsafePropertyFetch) {
+				return $types;
+			}
+
+			return $types->unionWith($this->specifyTypesInCondition(
+				$scope,
+				$exprNode,
+				$context->true() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createFalse()->negate(),
+			)->setRootExpr($rootExpr));
+		}
+
+		if (!$context->null() && $constantType->isTrue()->yes()) {
+			$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
+			if ($exprNode instanceof Expr\NullsafeMethodCall || $exprNode instanceof Expr\NullsafePropertyFetch) {
+				return $types;
+			}
+
+			return $types->unionWith($this->specifyTypesInCondition(
+				$scope,
+				$exprNode,
+				$context->true() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createTrue()->negate(),
+			)->setRootExpr($rootExpr));
+		}
+
+		return null;
+	}
+
+	private function specifyTypesForConstantStringBinaryExpression(
+		Expr $exprNode,
+		Type $constantType,
+		TypeSpecifierContext $context,
+		Scope $scope,
+		Expr $rootExpr,
+	): ?SpecifiedTypes
+	{
+		$scalarValues = $constantType->getConstantScalarValues();
+		if (count($scalarValues) !== 1 || !is_string($scalarValues[0])) {
+			return null;
+		}
+		$constantStringValue = $scalarValues[0];
+
+		if (
+			$exprNode instanceof FuncCall
+			&& $exprNode->name instanceof Name
+			&& strtolower($exprNode->name->toString()) === 'gettype'
+			&& isset($exprNode->getArgs()[0])
+		) {
+			$type = null;
+			if ($constantStringValue === 'string') {
+				$type = new StringType();
+			}
+			if ($constantStringValue === 'array') {
+				$type = new ArrayType(new MixedType(), new MixedType());
+			}
+			if ($constantStringValue === 'boolean') {
+				$type = new BooleanType();
+			}
+			if (in_array($constantStringValue, ['resource', 'resource (closed)'], true)) {
+				$type = new ResourceType();
+			}
+			if ($constantStringValue === 'integer') {
+				$type = new IntegerType();
+			}
+			if ($constantStringValue === 'double') {
+				$type = new FloatType();
+			}
+			if ($constantStringValue === 'NULL') {
+				$type = new NullType();
+			}
+			if ($constantStringValue === 'object') {
+				$type = new ObjectWithoutClassType();
+			}
+
+			if ($type !== null) {
+				$callType = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
+				$argType = $this->create($exprNode->getArgs()[0]->value, $type, $context, $scope)->setRootExpr($rootExpr);
+				return $callType->unionWith($argType);
+			}
+		}
+
+		if (
+			$context->true()
+			&& $exprNode instanceof FuncCall
+			&& $exprNode->name instanceof Name
+			&& strtolower((string) $exprNode->name) === 'get_parent_class'
+			&& isset($exprNode->getArgs()[0])
+		) {
+			$argType = $scope->getType($exprNode->getArgs()[0]->value);
+			$objectType = new ObjectType($constantStringValue);
+			$classStringType = new GenericClassStringType($objectType);
+
+			if ($argType->isString()->yes()) {
+				return $this->create(
+					$exprNode->getArgs()[0]->value,
+					$classStringType,
+					$context,
+					$scope,
+				)->setRootExpr($rootExpr);
+			}
+
+			if ($argType->isObject()->yes()) {
+				return $this->create(
+					$exprNode->getArgs()[0]->value,
+					$objectType,
+					$context,
+					$scope,
+				)->setRootExpr($rootExpr);
+			}
+
+			return $this->create(
+				$exprNode->getArgs()[0]->value,
+				TypeCombinator::union($objectType, $classStringType),
+				$context,
+				$scope,
+			)->setRootExpr($rootExpr);
+		}
+
+		return null;
+	}
+
+	private function handleDefaultTruthyOrFalseyContext(TypeSpecifierContext $context, Expr $expr, Scope $scope): SpecifiedTypes
+	{
+		if ($context->null()) {
+			return (new SpecifiedTypes([], []))->setRootExpr($expr);
+		}
+		if (!$context->truthy()) {
+			$type = StaticTypeFactory::truthy();
+			return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
+		} elseif (!$context->falsey()) {
+			$type = StaticTypeFactory::falsey();
+			return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
+		}
+
+		return (new SpecifiedTypes([], []))->setRootExpr($expr);
+	}
+
+	private function specifyTypesFromConditionalReturnType(
+		TypeSpecifierContext $context,
+		Expr\CallLike $call,
+		ParametersAcceptor $parametersAcceptor,
+		Scope $scope,
+	): ?SpecifiedTypes
+	{
+		if (!$parametersAcceptor instanceof ResolvedFunctionVariant) {
+			return null;
+		}
+
+		$returnType = $parametersAcceptor->getOriginalParametersAcceptor()->getReturnType();
+		if (!$returnType instanceof ConditionalTypeForParameter) {
+			return null;
+		}
+
+		if ($context->true()) {
+			$leftType = new ConstantBooleanType(true);
+			$rightType = new ConstantBooleanType(false);
+		} elseif ($context->false()) {
+			$leftType = new ConstantBooleanType(false);
+			$rightType = new ConstantBooleanType(true);
+		} elseif ($context->null()) {
+			$leftType = new MixedType();
+			$rightType = new NeverType();
+		} else {
+			return null;
+		}
+
+		$argsMap = [];
+		$parameters = $parametersAcceptor->getParameters();
+		foreach ($call->getArgs() as $i => $arg) {
+			if ($arg->unpack) {
+				continue;
+			}
+
+			if ($arg->name !== null) {
+				$paramName = $arg->name->toString();
+			} elseif (isset($parameters[$i])) {
+				$paramName = $parameters[$i]->getName();
+			} else {
+				continue;
+			}
+
+			$argsMap['$' . $paramName] = $arg->value;
+		}
+
+		return $this->getConditionalSpecifiedTypes($returnType, $leftType, $rightType, $scope, $argsMap);
+	}
+
+	/**
+	 * @param array<string, Expr> $argsMap
+	 */
+	public function getConditionalSpecifiedTypes(
+		ConditionalTypeForParameter $conditionalType,
+		Type $leftType,
+		Type $rightType,
+		Scope $scope,
+		array $argsMap,
+	): ?SpecifiedTypes
+	{
+		$parameterName = $conditionalType->getParameterName();
+		if (!array_key_exists($parameterName, $argsMap)) {
+			return null;
+		}
+
+		$targetType = $conditionalType->getTarget();
+		$ifType = $conditionalType->getIf();
+		$elseType = $conditionalType->getElse();
+
+		if ($leftType->isSuperTypeOf($ifType)->yes() && $rightType->isSuperTypeOf($elseType)->yes()) {
+			$context = $conditionalType->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue();
+		} elseif ($leftType->isSuperTypeOf($elseType)->yes() && $rightType->isSuperTypeOf($ifType)->yes()) {
+			$context = $conditionalType->isNegated() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
+		} else {
+			return null;
+		}
+
+		$specifiedTypes = $this->create(
+			$argsMap[$parameterName],
+			$targetType,
+			$context,
+			$scope,
+		);
+
+		if ($targetType instanceof ConstantBooleanType) {
+			if (!$targetType->getValue()) {
+				$context = $context->negate();
+			}
+
+			$specifiedTypes = $specifiedTypes->unionWith($this->specifyTypesInCondition($scope, $argsMap[$parameterName], $context));
+		}
+
+		return $specifiedTypes;
+	}
+
+	private function specifyTypesFromAsserts(TypeSpecifierContext $context, Expr\CallLike $call, Assertions $assertions, ParametersAcceptor $parametersAcceptor, Scope $scope): ?SpecifiedTypes
+	{
+		if ($context->null()) {
+			$asserts = $assertions->getAsserts();
+		} elseif ($context->true()) {
+			$asserts = $assertions->getAssertsIfTrue();
+		} elseif ($context->false()) {
+			$asserts = $assertions->getAssertsIfFalse();
+		} else {
+			throw new ShouldNotHappenException();
+		}
+
+		if (count($asserts) === 0) {
+			return null;
+		}
+
+		$argsMap = [];
+		$parameters = $parametersAcceptor->getParameters();
+		foreach ($call->getArgs() as $i => $arg) {
+			if ($arg->unpack) {
+				continue;
+			}
+
+			if ($arg->name !== null) {
+				$paramName = $arg->name->toString();
+			} elseif (isset($parameters[$i])) {
+				$paramName = $parameters[$i]->getName();
+			} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
+				$lastParameter = $parameters[count($parameters) - 1];
+				$paramName = $lastParameter->getName();
+			} else {
+				continue;
+			}
+
+			$argsMap[$paramName][] = $arg->value;
+		}
+
+		if ($call instanceof MethodCall) {
+			$argsMap['this'] = [$call->var];
+		}
+
+		/** @var SpecifiedTypes|null $types */
+		$types = null;
+
+		foreach ($asserts as $assert) {
+			foreach ($argsMap[substr($assert->getParameter()->getParameterName(), 1)] ?? [] as $parameterExpr) {
+				$assertedType = TypeTraverser::map($assert->getType(), static function (Type $type, callable $traverse) use ($argsMap, $scope): Type {
+					if ($type instanceof ConditionalTypeForParameter) {
+						$parameterName = substr($type->getParameterName(), 1);
+						if (array_key_exists($parameterName, $argsMap)) {
+							$argType = TypeCombinator::union(...array_map(static fn (Expr $expr) => $scope->getType($expr), $argsMap[$parameterName]));
+							$type = $type->toConditional($argType);
+						}
+					}
+
+					return $traverse($type);
+				});
+
+				$assertExpr = $assert->getParameter()->getExpr($parameterExpr);
+
+				$templateTypeMap = $parametersAcceptor->getResolvedTemplateTypeMap();
+				$containsUnresolvedTemplate = false;
+				TypeTraverser::map(
+					$assert->getOriginalType(),
+					static function (Type $type, callable $traverse) use ($templateTypeMap, &$containsUnresolvedTemplate) {
+						if ($type instanceof TemplateType && $type->getScope()->getClassName() !== null) {
+							$resolvedType = $templateTypeMap->getType($type->getName());
+							if ($resolvedType === null || $type->getBound()->equals($resolvedType)) {
+								$containsUnresolvedTemplate = true;
+								return $type;
+							}
+						}
+
+						return $traverse($type);
+					},
+				);
+
+				$newTypes = $this->create(
+					$assertExpr,
+					$assertedType,
+					$assert->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue(),
+					$scope,
+				)->setRootExpr($containsUnresolvedTemplate || $assert->isEquality() ? $call : null);
+				$types = $types !== null ? $types->unionWith($newTypes) : $newTypes;
+
+				if (!$context->null() || !$assertedType instanceof ConstantBooleanType) {
+					continue;
+				}
+
+				$subContext = $assertedType->getValue() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
+				if ($assert->isNegated()) {
+					$subContext = $subContext->negate();
+				}
+
+				$types = $types->unionWith($this->specifyTypesInCondition(
+					$scope,
+					$assertExpr,
+					$subContext,
+				));
+			}
+		}
+
+		return $types;
+	}
+
+	/**
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function processBooleanSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
+	{
+		$conditionExpressionTypes = [];
+		foreach ($leftTypes->getSureTypes() as $exprString => [$expr, $type]) {
+			if (!$expr instanceof Expr\Variable) {
+				continue;
+			}
+			if (!is_string($expr->name)) {
+				continue;
+			}
+
+			$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
+				$expr,
+				TypeCombinator::remove($scope->getType($expr), $type),
+			);
+		}
+
+		if (count($conditionExpressionTypes) > 0) {
+			$holders = [];
+			foreach ($rightTypes->getSureTypes() as $exprString => [$expr, $type]) {
+				if (!$expr instanceof Expr\Variable) {
+					continue;
+				}
+				if (!is_string($expr->name)) {
+					continue;
+				}
+
+				if (!isset($holders[$exprString])) {
+					$holders[$exprString] = [];
+				}
+
+				$conditions = $conditionExpressionTypes;
+				foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
+					$conditionExpr = $conditionExprTypeHolder->getExpr();
+					if (!$conditionExpr instanceof Expr\Variable) {
+						continue;
+					}
+					if (!is_string($conditionExpr->name)) {
+						continue;
+					}
+					if ($conditionExpr->name !== $expr->name) {
+						continue;
+					}
+
+					unset($conditions[$conditionExprString]);
+				}
+
+				if (count($conditions) === 0) {
+					continue;
+				}
+
+				$holder = new ConditionalExpressionHolder(
+					$conditions,
+					new ExpressionTypeHolder($expr, TypeCombinator::intersect($scope->getType($expr), $type), TrinaryLogic::createYes()),
+				);
+				$holders[$exprString][$holder->getKey()] = $holder;
+			}
+
+			return $holders;
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return array<string, ConditionalExpressionHolder[]>
+	 */
+	private function processBooleanNotSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
+	{
+		$conditionExpressionTypes = [];
+		foreach ($leftTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
+			if (!$expr instanceof Expr\Variable) {
+				continue;
+			}
+			if (!is_string($expr->name)) {
+				continue;
+			}
+
+			$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
+				$expr,
+				TypeCombinator::intersect($scope->getType($expr), $type),
+			);
+		}
+
+		if (count($conditionExpressionTypes) > 0) {
+			$holders = [];
+			foreach ($rightTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
+				if (!$expr instanceof Expr\Variable) {
+					continue;
+				}
+				if (!is_string($expr->name)) {
+					continue;
+				}
+
+				if (!isset($holders[$exprString])) {
+					$holders[$exprString] = [];
+				}
+
+				$conditions = $conditionExpressionTypes;
+				foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
+					$conditionExpr = $conditionExprTypeHolder->getExpr();
+					if (!$conditionExpr instanceof Expr\Variable) {
+						continue;
+					}
+					if (!is_string($conditionExpr->name)) {
+						continue;
+					}
+					if ($conditionExpr->name !== $expr->name) {
+						continue;
+					}
+
+					unset($conditions[$conditionExprString]);
+				}
+
+				if (count($conditions) === 0) {
+					continue;
+				}
+
+				$holder = new ConditionalExpressionHolder(
+					$conditions,
+					new ExpressionTypeHolder($expr, TypeCombinator::remove($scope->getType($expr), $type), TrinaryLogic::createYes()),
+				);
+				$holders[$exprString][$holder->getKey()] = $holder;
+			}
+
+			return $holders;
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return array{Expr, ConstantScalarType, Type}|null
+	 */
+	private function findTypeExpressionsFromBinaryOperation(Scope $scope, Node\Expr\BinaryOp $binaryOperation): ?array
+	{
+		$leftType = $scope->getType($binaryOperation->left);
+		$rightType = $scope->getType($binaryOperation->right);
+
+		$rightExpr = $binaryOperation->right;
+		if ($rightExpr instanceof AlwaysRememberedExpr) {
+			$rightExpr = $rightExpr->getExpr();
+		}
+
+		$leftExpr = $binaryOperation->left;
+		if ($leftExpr instanceof AlwaysRememberedExpr) {
+			$leftExpr = $leftExpr->getExpr();
+		}
+
+		if (
+			$leftType instanceof ConstantScalarType
+			&& !$rightExpr instanceof ConstFetch
+			&& !$rightExpr instanceof ClassConstFetch
+		) {
+			return [$binaryOperation->right, $leftType, $rightType];
+		} elseif (
+			$rightType instanceof ConstantScalarType
+			&& !$leftExpr instanceof ConstFetch
+			&& !$leftExpr instanceof ClassConstFetch
+		) {
+			return [$binaryOperation->left, $rightType, $leftType];
+		}
+
+		return null;
+	}
+
+	/** @api */
+	public function create(
+		Expr $expr,
+		Type $type,
+		TypeSpecifierContext $context,
+		Scope $scope,
+	): SpecifiedTypes
+	{
+		if ($expr instanceof Instanceof_ || $expr instanceof Expr\List_) {
+			return (new SpecifiedTypes([], []))->setRootExpr($expr);
+		}
+
+		$specifiedExprs = [];
+		if ($expr instanceof AlwaysRememberedExpr) {
+			$specifiedExprs[] = $expr;
+			$expr = $expr->expr;
+		}
+
+		if ($expr instanceof Expr\Assign) {
+			$specifiedExprs[] = $expr->var;
+			$specifiedExprs[] = $expr->expr;
+
+			while ($expr->expr instanceof Expr\Assign) {
+				$specifiedExprs[] = $expr->expr->var;
+				$expr = $expr->expr;
+			}
+		} elseif ($expr instanceof Expr\AssignOp\Coalesce) {
+			$specifiedExprs[] = $expr->var;
+		} else {
+			$specifiedExprs[] = $expr;
+		}
+
+		$types = null;
+
+		foreach ($specifiedExprs as $specifiedExpr) {
+			$newTypes = $this->createForExpr($specifiedExpr, $type, $context, $scope);
+
+			if ($types === null) {
+				$types = $newTypes;
+			} else {
+				$types = $types->unionWith($newTypes);
+			}
+		}
+
+		return $types;
+	}
+
+	private function createForExpr(
+		Expr $expr,
+		Type $type,
+		TypeSpecifierContext $context,
+		Scope $scope,
+	): SpecifiedTypes
+	{
+		if ($context->true()) {
+			$containsNull = !$type->isNull()->no() && !$scope->getType($expr)->isNull()->no();
+		} elseif ($context->false()) {
+			$containsNull = !TypeCombinator::containsNull($type) && !$scope->getType($expr)->isNull()->no();
+		}
+
+		$originalExpr = $expr;
+		if (isset($containsNull) && !$containsNull) {
+			$expr = NullsafeOperatorHelper::getNullsafeShortcircuitedExpr($expr);
+		}
+
+		if (
+			!$context->null()
+			&& $expr instanceof Expr\BinaryOp\Coalesce
+		) {
+			$rightIsSuperType = $type->isSuperTypeOf($scope->getType($expr->right));
+			if (($context->true() && $rightIsSuperType->no()) || ($context->false() && $rightIsSuperType->yes())) {
+				$expr = $expr->left;
+			}
+		}
+
+		if (
+			$expr instanceof FuncCall
+			&& $expr->name instanceof Name
+		) {
+			$has = $this->reflectionProvider->hasFunction($expr->name, $scope);
+			if (!$has) {
+				// backwards compatibility with previous behaviour
+				return new SpecifiedTypes([], []);
+			}
+
+			$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
+			$hasSideEffects = $functionReflection->hasSideEffects();
+			if ($hasSideEffects->yes()) {
+				return new SpecifiedTypes([], []);
+			}
+
+			if (!$this->rememberPossiblyImpureFunctionValues && !$hasSideEffects->no()) {
+				return new SpecifiedTypes([], []);
+			}
+		}
+
+		if (
+			$expr instanceof MethodCall
+			&& $expr->name instanceof Node\Identifier
+		) {
+			$methodName = $expr->name->toString();
+			$calledOnType = $scope->getType($expr->var);
+			$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
+			if (
+				$methodReflection === null
+				|| $methodReflection->hasSideEffects()->yes()
+				|| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
+			) {
+				if (isset($containsNull) && !$containsNull) {
+					return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
+				}
+
+				return new SpecifiedTypes([], []);
+			}
+		}
+
+		if (
+			$expr instanceof StaticCall
+			&& $expr->name instanceof Node\Identifier
+		) {
+			$methodName = $expr->name->toString();
+			if ($expr->class instanceof Name) {
+				$calledOnType = $scope->resolveTypeByName($expr->class);
+			} else {
+				$calledOnType = $scope->getType($expr->class);
+			}
+
+			$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
+			if (
+				$methodReflection === null
+				|| $methodReflection->hasSideEffects()->yes()
+				|| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
+			) {
+				if (isset($containsNull) && !$containsNull) {
+					return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
+				}
+
+				return new SpecifiedTypes([], []);
+			}
+		}
+
+		$sureTypes = [];
+		$sureNotTypes = [];
+		$exprString = $this->exprPrinter->printExpr($expr);
+		$originalExprString = $this->exprPrinter->printExpr($originalExpr);
+		if ($context->false()) {
+			$sureNotTypes[$exprString] = [$expr, $type];
+			if ($exprString !== $originalExprString) {
+				$sureNotTypes[$originalExprString] = [$originalExpr, $type];
+			}
+		} elseif ($context->true()) {
+			$sureTypes[$exprString] = [$expr, $type];
+			if ($exprString !== $originalExprString) {
+				$sureTypes[$originalExprString] = [$originalExpr, $type];
+			}
+		}
+
+		$types = new SpecifiedTypes($sureTypes, $sureNotTypes);
+		if (isset($containsNull) && !$containsNull) {
+			return $this->createNullsafeTypes($originalExpr, $scope, $context, $type)->unionWith($types);
+		}
+
+		return $types;
+	}
+
+	private function createNullsafeTypes(Expr $expr, Scope $scope, TypeSpecifierContext $context, ?Type $type): SpecifiedTypes
+	{
+		if ($expr instanceof Expr\NullsafePropertyFetch) {
+			if ($type !== null) {
+				$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), $type, $context, $scope);
+			} else {
+				$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), new NullType(), TypeSpecifierContext::createFalse(), $scope);
+			}
+
+			return $propertyFetchTypes->unionWith(
+				$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
+			);
+		}
+
+		if ($expr instanceof Expr\NullsafeMethodCall) {
+			if ($type !== null) {
+				$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), $type, $context, $scope);
+			} else {
+				$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), new NullType(), TypeSpecifierContext::createFalse(), $scope);
+			}
+
+			return $methodCallTypes->unionWith(
+				$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
+			);
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			return $this->createNullsafeTypes($expr->var, $scope, $context, null);
+		}
+
+		if ($expr instanceof Expr\MethodCall) {
+			return $this->createNullsafeTypes($expr->var, $scope, $context, null);
+		}
+
+		if ($expr instanceof Expr\ArrayDimFetch) {
+			return $this->createNullsafeTypes($expr->var, $scope, $context, null);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			return $this->createNullsafeTypes($expr->class, $scope, $context, null);
+		}
+
+		if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
+			return $this->createNullsafeTypes($expr->class, $scope, $context, null);
+		}
+
+		return new SpecifiedTypes([], []);
+	}
+
+	private function createRangeTypes(?Expr $rootExpr, Expr $expr, Type $type, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$sureNotTypes = [];
+
+		if ($type instanceof IntegerRangeType || $type instanceof ConstantIntegerType) {
+			$exprString = $this->exprPrinter->printExpr($expr);
+			if ($context->false()) {
+				$sureNotTypes[$exprString] = [$expr, $type];
+			} elseif ($context->true()) {
+				$inverted = TypeCombinator::remove(new IntegerType(), $type);
+				$sureNotTypes[$exprString] = [$expr, $inverted];
+			}
+		}
+
+		return (new SpecifiedTypes([], $sureNotTypes))->setRootExpr($rootExpr);
+	}
+
+	/**
+	 * @return FunctionTypeSpecifyingExtension[]
+	 */
+	private function getFunctionTypeSpecifyingExtensions(): array
+	{
+		return $this->functionTypeSpecifyingExtensions;
+	}
+
+	/**
+	 * @return MethodTypeSpecifyingExtension[]
+	 */
+	private function getMethodTypeSpecifyingExtensionsForClass(string $className): array
+	{
+		if ($this->methodTypeSpecifyingExtensionsByClass === null) {
+			$byClass = [];
+			foreach ($this->methodTypeSpecifyingExtensions as $extension) {
+				$byClass[$extension->getClass()][] = $extension;
+			}
+
+			$this->methodTypeSpecifyingExtensionsByClass = $byClass;
+		}
+		return $this->getTypeSpecifyingExtensionsForType($this->methodTypeSpecifyingExtensionsByClass, $className);
+	}
+
+	/**
+	 * @return StaticMethodTypeSpecifyingExtension[]
+	 */
+	private function getStaticMethodTypeSpecifyingExtensionsForClass(string $className): array
+	{
+		if ($this->staticMethodTypeSpecifyingExtensionsByClass === null) {
+			$byClass = [];
+			foreach ($this->staticMethodTypeSpecifyingExtensions as $extension) {
+				$byClass[$extension->getClass()][] = $extension;
+			}
+
+			$this->staticMethodTypeSpecifyingExtensionsByClass = $byClass;
+		}
+		return $this->getTypeSpecifyingExtensionsForType($this->staticMethodTypeSpecifyingExtensionsByClass, $className);
+	}
+
+	/**
+	 * @param MethodTypeSpecifyingExtension[][]|StaticMethodTypeSpecifyingExtension[][] $extensions
+	 * @return mixed[]
+	 */
+	private function getTypeSpecifyingExtensionsForType(array $extensions, string $className): array
+	{
+		$extensionsForClass = [[]];
+		$class = $this->reflectionProvider->getClass($className);
+		foreach (array_merge([$className], $class->getParentClassesNames(), $class->getNativeReflection()->getInterfaceNames()) as $extensionClassName) {
+			if (!isset($extensions[$extensionClassName])) {
+				continue;
+			}
+
+			$extensionsForClass[] = $extensions[$extensionClassName];
+		}
+
+		return array_merge(...$extensionsForClass);
+	}
+
+	public function resolveEqual(Expr\BinaryOp\Equal $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
+		if ($expressions !== null) {
+			$exprNode = $expressions[0];
+			$constantType = $expressions[1];
+			$otherType = $expressions[2];
+
+			if (!$context->null() && $constantType->getValue() === null) {
+				$trueTypes = [
+					new NullType(),
+					new ConstantBooleanType(false),
+					new ConstantIntegerType(0),
+					new ConstantFloatType(0.0),
+					new ConstantStringType(''),
+					new ConstantArrayType([], []),
+				];
+				return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
+			}
+
+			if (!$context->null() && $constantType->getValue() === false) {
+				return $this->specifyTypesInCondition(
+					$scope,
+					$exprNode,
+					$context->true() ? TypeSpecifierContext::createFalsey() : TypeSpecifierContext::createFalsey()->negate(),
+				)->setRootExpr($expr);
+			}
+
+			if (!$context->null() && $constantType->getValue() === true) {
+				return $this->specifyTypesInCondition(
+					$scope,
+					$exprNode,
+					$context->true() ? TypeSpecifierContext::createTruthy() : TypeSpecifierContext::createTruthy()->negate(),
+				)->setRootExpr($expr);
+			}
+
+			if (!$context->null() && $constantType->getValue() === 0 && !$otherType->isInteger()->yes() && !$otherType->isBoolean()->yes()) {
+				/* There is a difference between php 7.x and 8.x on the equality
+				 * behavior between zero and the empty string, so to be conservative
+				 * we leave it untouched regardless of the language version */
+				if ($context->true()) {
+					$trueTypes = [
+						new NullType(),
+						new ConstantBooleanType(false),
+						new ConstantIntegerType(0),
+						new ConstantFloatType(0.0),
+						new StringType(),
+					];
+				} else {
+					$trueTypes = [
+						new NullType(),
+						new ConstantBooleanType(false),
+						new ConstantIntegerType(0),
+						new ConstantFloatType(0.0),
+						new ConstantStringType('0'),
+					];
+				}
+				return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
+			}
+
+			if (!$context->null() && $constantType->getValue() === '') {
+				/* There is a difference between php 7.x and 8.x on the equality
+				 * behavior between zero and the empty string, so to be conservative
+				 * we leave it untouched regardless of the language version */
+				if ($context->true()) {
+					$trueTypes = [
+						new NullType(),
+						new ConstantBooleanType(false),
+						new ConstantIntegerType(0),
+						new ConstantFloatType(0.0),
+						new ConstantStringType(''),
+					];
+				} else {
+					$trueTypes = [
+						new NullType(),
+						new ConstantBooleanType(false),
+						new ConstantStringType(''),
+					];
+				}
+				return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
+			}
+
+			if (
+				$exprNode instanceof FuncCall
+				&& $exprNode->name instanceof Name
+				&& in_array(strtolower($exprNode->name->toString()), ['gettype', 'get_class', 'get_debug_type'], true)
+				&& isset($exprNode->getArgs()[0])
+				&& $constantType->isString()->yes()
+			) {
+				return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
+			}
+
+			if (
+				$context->true()
+				&& $exprNode instanceof FuncCall
+				&& $exprNode->name instanceof Name
+				&& $exprNode->name->toLowerString() === 'preg_match'
+				&& (new ConstantIntegerType(1))->isSuperTypeOf($constantType)->yes()
+			) {
+				return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
+			}
+		}
+
+		$leftType = $scope->getType($expr->left);
+		$rightType = $scope->getType($expr->right);
+
+		$leftBooleanType = $leftType->toBoolean();
+		if ($leftBooleanType instanceof ConstantBooleanType && $rightType->isBoolean()->yes()) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Expr\BinaryOp\Identical(
+					new ConstFetch(new Name($leftBooleanType->getValue() ? 'true' : 'false')),
+					$expr->right,
+				),
+				$context,
+			)->setRootExpr($expr);
+		}
+
+		$rightBooleanType = $rightType->toBoolean();
+		if ($rightBooleanType instanceof ConstantBooleanType && $leftType->isBoolean()->yes()) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Expr\BinaryOp\Identical(
+					$expr->left,
+					new ConstFetch(new Name($rightBooleanType->getValue() ? 'true' : 'false')),
+				),
+				$context,
+			)->setRootExpr($expr);
+		}
+
+		if (
+			!$context->null()
+			&& $rightType->isArray()->yes()
+			&& $leftType->isConstantArray()->yes() && $leftType->isIterableAtLeastOnce()->no()
+		) {
+			return $this->create($expr->right, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
+		}
+
+		if (
+			!$context->null()
+			&& $leftType->isArray()->yes()
+			&& $rightType->isConstantArray()->yes() && $rightType->isIterableAtLeastOnce()->no()
+		) {
+			return $this->create($expr->left, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
+		}
+
+		if (
+			($leftType->isString()->yes() && $rightType->isString()->yes())
+			|| ($leftType->isInteger()->yes() && $rightType->isInteger()->yes())
+			|| ($leftType->isFloat()->yes() && $rightType->isFloat()->yes())
+			|| ($leftType->isEnum()->yes() && $rightType->isEnum()->yes())
+		) {
+			return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
+		}
+
+		$leftExprString = $this->exprPrinter->printExpr($expr->left);
+		$rightExprString = $this->exprPrinter->printExpr($expr->right);
+		if ($leftExprString === $rightExprString) {
+			if (!$expr->left instanceof Expr\Variable || !$expr->right instanceof Expr\Variable) {
+				return (new SpecifiedTypes([], []))->setRootExpr($expr);
+			}
+		}
+
+		$leftTypes = $this->create($expr->left, $leftType, $context, $scope)->setRootExpr($expr);
+		$rightTypes = $this->create($expr->right, $rightType, $context, $scope)->setRootExpr($expr);
+
+		return $context->true()
+			? $leftTypes->unionWith($rightTypes)
+			: $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($scope));
+	}
+
+	public function resolveIdentical(Expr\BinaryOp\Identical $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		// Normalize to: fn() === expr
+		$leftExpr = $expr->left;
+		$rightExpr = $expr->right;
+		if ($rightExpr instanceof FuncCall && !$leftExpr instanceof FuncCall) {
+			[$leftExpr, $rightExpr] = [$rightExpr, $leftExpr];
+		}
+
+		$unwrappedLeftExpr = $leftExpr;
+		if ($leftExpr instanceof AlwaysRememberedExpr) {
+			$unwrappedLeftExpr = $leftExpr->getExpr();
+		}
+		$unwrappedRightExpr = $rightExpr;
+		if ($rightExpr instanceof AlwaysRememberedExpr) {
+			$unwrappedRightExpr = $rightExpr->getExpr();
+		}
+
+		$rightType = $scope->getType($rightExpr);
+
+		// (count($a) === $b)
+		if (
+			!$context->null()
+			&& $unwrappedLeftExpr instanceof FuncCall
+			&& count($unwrappedLeftExpr->getArgs()) >= 1
+			&& $unwrappedLeftExpr->name instanceof Name
+			&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['count', 'sizeof'], true)
+			&& $rightType->isInteger()->yes()
+		) {
+			if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
+				return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
+			}
+
+			$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
+			$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
+			if ($isZero->yes()) {
+				$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
+
+				if ($context->truthy() && !$argType->isArray()->yes()) {
+					$newArgType = new UnionType([
+						new ObjectType(Countable::class),
+						new ConstantArrayType([], []),
+					]);
+				} else {
+					$newArgType = new ConstantArrayType([], []);
+				}
+
+				return $funcTypes->unionWith(
+					$this->create($unwrappedLeftExpr->getArgs()[0]->value, $newArgType, $context, $scope)->setRootExpr($expr),
+				);
+			}
+
+			if ($argType instanceof UnionType) {
+				$narrowed = $this->narrowUnionByArraySize($unwrappedLeftExpr, $argType, $rightType, $context, $scope, $expr);
+				if ($narrowed !== null) {
+					return $narrowed;
+				}
+			}
+
+			if ($context->truthy()) {
+				if ($argType->isArray()->yes()) {
+					if (
+						$argType->isConstantArray()->yes()
+						&& $rightType->isSuperTypeOf($argType->getArraySize())->no()
+					) {
+						return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
+					}
+
+					$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
+					$constArray = $this->turnListIntoConstantArray($unwrappedLeftExpr, $argType, $rightType, $scope);
+					if ($constArray !== null) {
+						return $funcTypes->unionWith(
+							$this->create($unwrappedLeftExpr->getArgs()[0]->value, $constArray, $context, $scope)->setRootExpr($expr),
+						);
+					} elseif (IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
+						return $funcTypes->unionWith(
+							$this->create($unwrappedLeftExpr->getArgs()[0]->value, new NonEmptyArrayType(), $context, $scope)->setRootExpr($expr),
+						);
+					}
+
+					return $funcTypes;
+				}
+			}
+		}
+
+		// strlen($a) === $b
+		if (
+			!$context->null()
+			&& $unwrappedLeftExpr instanceof FuncCall
+			&& count($unwrappedLeftExpr->getArgs()) === 1
+			&& $unwrappedLeftExpr->name instanceof Name
+			&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['strlen', 'mb_strlen'], true)
+			&& $rightType->isInteger()->yes()
+		) {
+			if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
+				return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
+			}
+
+			$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
+			if ($isZero->yes()) {
+				$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
+				return $funcTypes->unionWith(
+					$this->create($unwrappedLeftExpr->getArgs()[0]->value, new ConstantStringType(''), $context, $scope)->setRootExpr($expr),
+				);
+			}
+
+			if ($context->truthy() && IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
+				$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
+				if ($argType->isString()->yes()) {
+					$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
+
+					$accessory = new AccessoryNonEmptyStringType();
+					if (IntegerRangeType::fromInterval(2, null)->isSuperTypeOf($rightType)->yes()) {
+						$accessory = new AccessoryNonFalsyStringType();
+					}
+					$valueTypes = $this->create($unwrappedLeftExpr->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr);
+
+					return $funcTypes->unionWith($valueTypes);
+				}
+			}
+		}
+
+		// preg_match($a) === $b
+		if (
+			$context->true()
+			&& $unwrappedLeftExpr instanceof FuncCall
+			&& $unwrappedLeftExpr->name instanceof Name
+			&& $unwrappedLeftExpr->name->toLowerString() === 'preg_match'
+			&& (new ConstantIntegerType(1))->isSuperTypeOf($rightType)->yes()
+		) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				$leftExpr,
+				$context,
+			)->setRootExpr($expr);
+		}
+
+		// get_class($a) === 'Foo'
+		if (
+			$context->true()
+			&& $unwrappedLeftExpr instanceof FuncCall
+			&& $unwrappedLeftExpr->name instanceof Name
+			&& in_array(strtolower($unwrappedLeftExpr->name->toString()), ['get_class', 'get_debug_type'], true)
+			&& isset($unwrappedLeftExpr->getArgs()[0])
+		) {
+			if ($rightType->getClassStringObjectType()->isObject()->yes()) {
+				return $this->create(
+					$unwrappedLeftExpr->getArgs()[0]->value,
+					$rightType->getClassStringObjectType(),
+					$context,
+					$scope,
+				)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
+			}
+		}
+
+		// get_class($a) === 'Foo'
+		if (
+			$context->truthy()
+			&& $unwrappedLeftExpr instanceof FuncCall
+			&& $unwrappedLeftExpr->name instanceof Name
+			&& in_array(strtolower($unwrappedLeftExpr->name->toString()), [
+				'substr', 'strstr', 'stristr', 'strchr', 'strrchr', 'strtolower', 'strtoupper', 'ucfirst', 'lcfirst',
+				'mb_substr', 'mb_strstr', 'mb_stristr', 'mb_strchr', 'mb_strrchr', 'mb_strtolower', 'mb_strtoupper', 'mb_ucfirst', 'mb_lcfirst',
+				'ucwords', 'mb_convert_case', 'mb_convert_kana',
+			], true)
+			&& isset($unwrappedLeftExpr->getArgs()[0])
+			&& $rightType->isNonEmptyString()->yes()
+		) {
+			$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
+
+			if ($argType->isString()->yes()) {
+				if ($rightType->isNonFalsyString()->yes()) {
+					return $this->create(
+						$unwrappedLeftExpr->getArgs()[0]->value,
+						TypeCombinator::intersect($argType, new AccessoryNonFalsyStringType()),
+						$context,
+						$scope,
+					)->setRootExpr($expr);
+				}
+
+				return $this->create(
+					$unwrappedLeftExpr->getArgs()[0]->value,
+					TypeCombinator::intersect($argType, new AccessoryNonEmptyStringType()),
+					$context,
+					$scope,
+				)->setRootExpr($expr);
+			}
+		}
+
+		if ($rightType->isString()->yes()) {
+			$types = null;
+			foreach ($rightType->getConstantStrings() as $constantString) {
+				$specifiedType = $this->specifyTypesForConstantStringBinaryExpression($unwrappedLeftExpr, $constantString, $context, $scope, $expr);
+
+				if ($specifiedType === null) {
+					continue;
+				}
+				if ($types === null) {
+					$types = $specifiedType;
+					continue;
+				}
+
+				$types = $types->intersectWith($specifiedType);
+			}
+
+			if ($types !== null) {
+				if ($leftExpr !== $unwrappedLeftExpr) {
+					$types = $types->unionWith($this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr));
+				}
+				return $types;
+			}
+		}
+
+		$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
+		if ($expressions !== null) {
+			$exprNode = $expressions[0];
+			$constantType = $expressions[1];
+
+			$unwrappedExprNode = $exprNode;
+			if ($exprNode instanceof AlwaysRememberedExpr) {
+				$unwrappedExprNode = $exprNode->getExpr();
+			}
+
+			$specifiedType = $this->specifyTypesForConstantBinaryExpression($unwrappedExprNode, $constantType, $context, $scope, $expr);
+			if ($specifiedType !== null) {
+				if ($exprNode !== $unwrappedExprNode) {
+					$specifiedType = $specifiedType->unionWith(
+						$this->create($exprNode, $constantType, $context, $scope)->setRootExpr($expr),
+					);
+				}
+				return $specifiedType;
+			}
+		}
+
+		// $a::class === 'Foo'
+		if (
+			$context->true() &&
+			$unwrappedLeftExpr instanceof ClassConstFetch &&
+			$unwrappedLeftExpr->class instanceof Expr &&
+			$unwrappedLeftExpr->name instanceof Node\Identifier &&
+			$unwrappedRightExpr instanceof ClassConstFetch &&
+			$rightType instanceof ConstantStringType &&
+			$rightType->getValue() !== '' &&
+			strtolower($unwrappedLeftExpr->name->toString()) === 'class'
+		) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Instanceof_(
+					$unwrappedLeftExpr->class,
+					new Name($rightType->getValue()),
+				),
+				$context,
+			)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
+		}
+
+		$leftType = $scope->getType($leftExpr);
+
+		// 'Foo' === $a::class
+		if (
+			$context->true() &&
+			$unwrappedRightExpr instanceof ClassConstFetch &&
+			$unwrappedRightExpr->class instanceof Expr &&
+			$unwrappedRightExpr->name instanceof Node\Identifier &&
+			$unwrappedLeftExpr instanceof ClassConstFetch &&
+			$leftType instanceof ConstantStringType &&
+			$leftType->getValue() !== '' &&
+			strtolower($unwrappedRightExpr->name->toString()) === 'class'
+		) {
+			return $this->specifyTypesInCondition(
+				$scope,
+				new Instanceof_(
+					$unwrappedRightExpr->class,
+					new Name($leftType->getValue()),
+				),
+				$context,
+			)->unionWith($this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr));
+		}
+
+		if ($context->false()) {
+			$identicalType = $scope->getType($expr);
+			if ($identicalType instanceof ConstantBooleanType) {
+				$never = new NeverType();
+				$contextForTypes = $identicalType->getValue() ? $context->negate() : $context;
+				$leftTypes = $this->create($leftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
+				$rightTypes = $this->create($rightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
+				if ($leftExpr instanceof AlwaysRememberedExpr) {
+					$leftTypes = $leftTypes->unionWith(
+						$this->create($unwrappedLeftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr),
+					);
+				}
+				if ($rightExpr instanceof AlwaysRememberedExpr) {
+					$rightTypes = $rightTypes->unionWith(
+						$this->create($unwrappedRightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr),
+					);
+				}
+				return $leftTypes->unionWith($rightTypes);
+			}
+		}
+
+		$types = null;
+		if (
+			count($leftType->getFiniteTypes()) === 1
+			|| (
+				$context->true()
+				&& $leftType->isConstantValue()->yes()
+				&& !$rightType->equals($leftType)
+				&& $rightType->isSuperTypeOf($leftType)->yes())
+		) {
+			$types = $this->create(
+				$rightExpr,
+				$leftType,
+				$context,
+				$scope,
+			)->setRootExpr($expr);
+			if ($rightExpr instanceof AlwaysRememberedExpr) {
+				$types = $types->unionWith($this->create(
+					$unwrappedRightExpr,
+					$leftType,
+					$context,
+					$scope,
+				))->setRootExpr($expr);
+			}
+		}
+		if (
+			count($rightType->getFiniteTypes()) === 1
+			|| (
+				$context->true()
+				&& $rightType->isConstantValue()->yes()
+				&& !$leftType->equals($rightType)
+				&& $leftType->isSuperTypeOf($rightType)->yes()
+			)
+		) {
+			$leftTypes = $this->create(
+				$leftExpr,
+				$rightType,
+				$context,
+				$scope,
+			)->setRootExpr($expr);
+			if ($leftExpr instanceof AlwaysRememberedExpr) {
+				$leftTypes = $leftTypes->unionWith($this->create(
+					$unwrappedLeftExpr,
+					$rightType,
+					$context,
+					$scope,
+				))->setRootExpr($expr);
+			}
+			if ($types !== null) {
+				$types = $types->unionWith($leftTypes);
+			} else {
+				$types = $leftTypes;
+			}
+		}
+
+		if ($types !== null) {
+			return $types;
+		}
+
+		$leftExprString = $this->exprPrinter->printExpr($unwrappedLeftExpr);
+		$rightExprString = $this->exprPrinter->printExpr($unwrappedRightExpr);
+		if ($leftExprString === $rightExprString) {
+			if (!$unwrappedLeftExpr instanceof Expr\Variable || !$unwrappedRightExpr instanceof Expr\Variable) {
+				return (new SpecifiedTypes([], []))->setRootExpr($expr);
+			}
+		}
+
+		if ($context->true()) {
+			$leftTypes = $this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr);
+			$rightTypes = $this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr);
+			if ($leftExpr instanceof AlwaysRememberedExpr) {
+				$leftTypes = $leftTypes->unionWith(
+					$this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr),
+				);
+			}
+			if ($rightExpr instanceof AlwaysRememberedExpr) {
+				$rightTypes = $rightTypes->unionWith(
+					$this->create($unwrappedRightExpr, $leftType, $context, $scope)->setRootExpr($expr),
+				);
+			}
+			return $leftTypes->unionWith($rightTypes);
+		} elseif ($context->false()) {
+			return $this->create($leftExpr, $leftType, $context, $scope)->setRootExpr($expr)->normalize($scope)
+				->intersectWith($this->create($rightExpr, $rightType, $context, $scope)->setRootExpr($expr)->normalize($scope));
+		}
+
+		return (new SpecifiedTypes([], []))->setRootExpr($expr);
+	}
+
+}
diff --git a/src/Analyser/TypeSpecifierAwareExtension.php b/src/Analyser/TypeSpecifierAwareExtension.php
new file mode 100644
index 00000000..24d51cbf
--- /dev/null
+++ b/src/Analyser/TypeSpecifierAwareExtension.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+/** @api */
+interface TypeSpecifierAwareExtension
+{
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void;
+
+}
diff --git a/src/Analyser/TypeSpecifierContext.php b/src/Analyser/TypeSpecifierContext.php
new file mode 100644
index 00000000..834b51a3
--- /dev/null
+++ b/src/Analyser/TypeSpecifierContext.php
@@ -0,0 +1,93 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\ShouldNotHappenException;
+
+/**
+ * @api
+ */
+final class TypeSpecifierContext
+{
+
+	public const CONTEXT_TRUE = 0b0001;
+	public const CONTEXT_TRUTHY_BUT_NOT_TRUE = 0b0010;
+	public const CONTEXT_TRUTHY = self::CONTEXT_TRUE | self::CONTEXT_TRUTHY_BUT_NOT_TRUE;
+	public const CONTEXT_FALSE = 0b0100;
+	public const CONTEXT_FALSEY_BUT_NOT_FALSE = 0b1000;
+	public const CONTEXT_FALSEY = self::CONTEXT_FALSE | self::CONTEXT_FALSEY_BUT_NOT_FALSE;
+	public const CONTEXT_BITMASK = 0b1111;
+
+	/** @var self[] */
+	private static array $registry;
+
+	private function __construct(private ?int $value)
+	{
+	}
+
+	private static function create(?int $value): self
+	{
+		self::$registry[$value] ??= new self($value);
+		return self::$registry[$value];
+	}
+
+	public static function createTrue(): self
+	{
+		return self::create(self::CONTEXT_TRUE);
+	}
+
+	public static function createTruthy(): self
+	{
+		return self::create(self::CONTEXT_TRUTHY);
+	}
+
+	public static function createFalse(): self
+	{
+		return self::create(self::CONTEXT_FALSE);
+	}
+
+	public static function createFalsey(): self
+	{
+		return self::create(self::CONTEXT_FALSEY);
+	}
+
+	public static function createNull(): self
+	{
+		return self::create(null);
+	}
+
+	public function negate(): self
+	{
+		if ($this->value === null) {
+			throw new ShouldNotHappenException();
+		}
+		return self::create(~$this->value & self::CONTEXT_BITMASK);
+	}
+
+	public function true(): bool
+	{
+		return $this->value !== null && (bool) ($this->value & self::CONTEXT_TRUE);
+	}
+
+	public function truthy(): bool
+	{
+		return $this->value !== null && (bool) ($this->value & self::CONTEXT_TRUTHY);
+	}
+
+	public function false(): bool
+	{
+		return $this->value !== null && (bool) ($this->value & self::CONTEXT_FALSE);
+	}
+
+	public function falsey(): bool
+	{
+		return $this->value !== null && (bool) ($this->value & self::CONTEXT_FALSEY);
+	}
+
+	public function null(): bool
+	{
+		return $this->value === null;
+	}
+
+}
diff --git a/src/Analyser/TypeSpecifierFactory.php b/src/Analyser/TypeSpecifierFactory.php
new file mode 100644
index 00000000..b907084d
--- /dev/null
+++ b/src/Analyser/TypeSpecifierFactory.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use function array_merge;
+
+final class TypeSpecifierFactory
+{
+
+	public const FUNCTION_TYPE_SPECIFYING_EXTENSION_TAG = 'phpstan.typeSpecifier.functionTypeSpecifyingExtension';
+	public const METHOD_TYPE_SPECIFYING_EXTENSION_TAG = 'phpstan.typeSpecifier.methodTypeSpecifyingExtension';
+	public const STATIC_METHOD_TYPE_SPECIFYING_EXTENSION_TAG = 'phpstan.typeSpecifier.staticMethodTypeSpecifyingExtension';
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function create(): TypeSpecifier
+	{
+		$typeSpecifier = new TypeSpecifier(
+			$this->container->getByType(ExprPrinter::class),
+			$this->container->getByType(ReflectionProvider::class),
+			$this->container->getByType(PhpVersion::class),
+			$this->container->getServicesByTag(self::FUNCTION_TYPE_SPECIFYING_EXTENSION_TAG),
+			$this->container->getServicesByTag(self::METHOD_TYPE_SPECIFYING_EXTENSION_TAG),
+			$this->container->getServicesByTag(self::STATIC_METHOD_TYPE_SPECIFYING_EXTENSION_TAG),
+			$this->container->getParameter('rememberPossiblyImpureFunctionValues'),
+		);
+
+		foreach (array_merge(
+			$this->container->getServicesByTag(BrokerFactory::PROPERTIES_CLASS_REFLECTION_EXTENSION_TAG),
+			$this->container->getServicesByTag(BrokerFactory::METHODS_CLASS_REFLECTION_EXTENSION_TAG),
+			$this->container->getServicesByTag(BrokerFactory::DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+			$this->container->getServicesByTag(BrokerFactory::DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+			$this->container->getServicesByTag(BrokerFactory::DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG),
+		) as $extension) {
+			if (!($extension instanceof TypeSpecifierAwareExtension)) {
+				continue;
+			}
+
+			$extension->setTypeSpecifier($typeSpecifier);
+		}
+
+		return $typeSpecifier;
+	}
+
+}
diff --git a/src/Analyser/UndefinedVariableException.php b/src/Analyser/UndefinedVariableException.php
new file mode 100644
index 00000000..23c68f3e
--- /dev/null
+++ b/src/Analyser/UndefinedVariableException.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Analyser;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class UndefinedVariableException extends AnalysedCodeException
+{
+
+	public function __construct(private Scope $scope, private string $variableName)
+	{
+		parent::__construct(sprintf('Undefined variable: $%s', $variableName));
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getVariableName(): string
+	{
+		return $this->variableName;
+	}
+
+	public function getTip(): ?string
+	{
+		return null;
+	}
+
+}
diff --git a/src/Broker/AnonymousClassNameHelper.php b/src/Broker/AnonymousClassNameHelper.php
new file mode 100644
index 00000000..93b8dc39
--- /dev/null
+++ b/src/Broker/AnonymousClassNameHelper.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+use PhpParser\Node;
+use PHPStan\File\FileHelper;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\Parser\AnonymousClassVisitor;
+use PHPStan\ShouldNotHappenException;
+use function md5;
+use function sprintf;
+
+final class AnonymousClassNameHelper
+{
+
+	public function __construct(
+		private FileHelper $fileHelper,
+		private RelativePathHelper $relativePathHelper,
+	)
+	{
+	}
+
+	public function getAnonymousClassName(
+		Node\Stmt\Class_ $classNode,
+		string $filename,
+	): string
+	{
+		if (isset($classNode->namespacedName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$filename = $this->relativePathHelper->getRelativePath(
+			$this->fileHelper->normalizePath($filename, '/'),
+		);
+
+		/** @var int|null $lineIndex */
+		$lineIndex = $classNode->getAttribute(AnonymousClassVisitor::ATTRIBUTE_LINE_INDEX);
+		if ($lineIndex === null) {
+			$hash = md5(sprintf('%s:%s', $filename, $classNode->getStartLine()));
+		} else {
+			$hash = md5(sprintf('%s:%s:%d', $filename, $classNode->getStartLine(), $lineIndex));
+		}
+
+		return sprintf(
+			'AnonymousClass%s',
+			$hash,
+		);
+	}
+
+}
diff --git a/src/Broker/BrokerFactory.php b/src/Broker/BrokerFactory.php
new file mode 100644
index 00000000..1ef3c23d
--- /dev/null
+++ b/src/Broker/BrokerFactory.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+final class BrokerFactory
+{
+
+	public const PROPERTIES_CLASS_REFLECTION_EXTENSION_TAG = 'phpstan.broker.propertiesClassReflectionExtension';
+	public const METHODS_CLASS_REFLECTION_EXTENSION_TAG = 'phpstan.broker.methodsClassReflectionExtension';
+	public const ALLOWED_SUB_TYPES_CLASS_REFLECTION_EXTENSION_TAG = 'phpstan.broker.allowedSubTypesClassReflectionExtension';
+	public const DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG = 'phpstan.broker.dynamicMethodReturnTypeExtension';
+	public const DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG = 'phpstan.broker.dynamicStaticMethodReturnTypeExtension';
+	public const DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG = 'phpstan.broker.dynamicFunctionReturnTypeExtension';
+	public const OPERATOR_TYPE_SPECIFYING_EXTENSION_TAG = 'phpstan.broker.operatorTypeSpecifyingExtension';
+	public const EXPRESSION_TYPE_RESOLVER_EXTENSION_TAG = 'phpstan.broker.expressionTypeResolverExtension';
+
+}
diff --git a/src/Broker/ClassAutoloadingException.php b/src/Broker/ClassAutoloadingException.php
new file mode 100644
index 00000000..eb0a58c2
--- /dev/null
+++ b/src/Broker/ClassAutoloadingException.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+use PHPStan\AnalysedCodeException;
+use Throwable;
+use function get_class;
+use function sprintf;
+
+final class ClassAutoloadingException extends AnalysedCodeException
+{
+
+	private string $className;
+
+	public function __construct(
+		string $functionName,
+		?Throwable $previous = null,
+	)
+	{
+		if ($previous !== null) {
+			parent::__construct(sprintf(
+				'%s (%s) thrown while looking for class %s.',
+				get_class($previous),
+				$previous->getMessage(),
+				$functionName,
+			), 0, $previous);
+		} else {
+			parent::__construct(sprintf(
+				'Class %s not found.',
+				$functionName,
+			), 0);
+		}
+
+		$this->className = $functionName;
+	}
+
+	public function getClassName(): string
+	{
+		return $this->className;
+	}
+
+	public function getTip(): string
+	{
+		return 'Learn more at https://phpstan.org/user-guide/discovering-symbols';
+	}
+
+}
diff --git a/src/Broker/ClassNotFoundException.php b/src/Broker/ClassNotFoundException.php
new file mode 100644
index 00000000..cca1d5cd
--- /dev/null
+++ b/src/Broker/ClassNotFoundException.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class ClassNotFoundException extends AnalysedCodeException
+{
+
+	public function __construct(private string $className)
+	{
+		parent::__construct(sprintf('Class %s was not found while trying to analyse it - discovering symbols is probably not configured properly.', $className));
+	}
+
+	public function getClassName(): string
+	{
+		return $this->className;
+	}
+
+	public function getTip(): string
+	{
+		return 'Learn more at https://phpstan.org/user-guide/discovering-symbols';
+	}
+
+}
diff --git a/src/Broker/ConstantNotFoundException.php b/src/Broker/ConstantNotFoundException.php
new file mode 100644
index 00000000..4f0a9436
--- /dev/null
+++ b/src/Broker/ConstantNotFoundException.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class ConstantNotFoundException extends AnalysedCodeException
+{
+
+	public function __construct(private string $constantName)
+	{
+		parent::__construct(sprintf('Constant %s not found.', $constantName));
+	}
+
+	public function getConstantName(): string
+	{
+		return $this->constantName;
+	}
+
+	public function getTip(): string
+	{
+		return 'Learn more at https://phpstan.org/user-guide/discovering-symbols';
+	}
+
+}
diff --git a/src/Broker/FunctionNotFoundException.php b/src/Broker/FunctionNotFoundException.php
new file mode 100644
index 00000000..387c80c6
--- /dev/null
+++ b/src/Broker/FunctionNotFoundException.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Broker;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class FunctionNotFoundException extends AnalysedCodeException
+{
+
+	public function __construct(private string $functionName)
+	{
+		parent::__construct(sprintf('Function %s not found while trying to analyse it - discovering symbols is probably not configured properly.', $functionName));
+	}
+
+	public function getFunctionName(): string
+	{
+		return $this->functionName;
+	}
+
+	public function getTip(): string
+	{
+		return 'Learn more at https://phpstan.org/user-guide/discovering-symbols';
+	}
+
+}
diff --git a/src/Cache/Cache.php b/src/Cache/Cache.php
new file mode 100644
index 00000000..ac388f8b
--- /dev/null
+++ b/src/Cache/Cache.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Cache;
+return;
+
+final class Cache
+{
+
+	public function __construct(private CacheStorage $storage)
+	{
+	}
+
+	/**
+	 * @return mixed|null
+	 */
+	public function load(string $key, string $variableKey)
+	{
+		return $this->storage->load($key, $variableKey);
+	}
+
+	/**
+	 * @param mixed $data
+	 */
+	public function save(string $key, string $variableKey, $data): void
+	{
+		$this->storage->save($key, $variableKey, $data);
+	}
+
+}
diff --git a/src/Cache/CacheItem.php b/src/Cache/CacheItem.php
new file mode 100644
index 00000000..973e648d
--- /dev/null
+++ b/src/Cache/CacheItem.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Cache;
+return;
+
+final class CacheItem
+{
+
+	/**
+	 * @param mixed $data
+	 */
+	public function __construct(private string $variableKey, private $data)
+	{
+	}
+
+	public function isVariableKeyValid(string $variableKey): bool
+	{
+		return $this->variableKey === $variableKey;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	public function getData()
+	{
+		return $this->data;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self($properties['variableKey'], $properties['data']);
+	}
+
+}
diff --git a/src/Cache/CacheStorage.php b/src/Cache/CacheStorage.php
new file mode 100644
index 00000000..da28db72
--- /dev/null
+++ b/src/Cache/CacheStorage.php
@@ -0,0 +1,19 @@
+<?php 
+
+namespace PHPStan\Cache;
+return;
+
+interface CacheStorage
+{
+
+	/**
+	 * @return mixed|null
+	 */
+	public function load(string $key, string $variableKey);
+
+	/**
+	 * @param mixed $data
+	 */
+	public function save(string $key, string $variableKey, $data): void;
+
+}
diff --git a/src/Cache/FileCacheStorage.php b/src/Cache/FileCacheStorage.php
new file mode 100644
index 00000000..f2308292
--- /dev/null
+++ b/src/Cache/FileCacheStorage.php
@@ -0,0 +1,207 @@
+<?php 
+
+namespace PHPStan\Cache;
+return;
+
+use InvalidArgumentException;
+use Nette\Utils\Random;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\CouldNotWriteFileException;
+use PHPStan\File\FileReader;
+use PHPStan\File\FileWriter;
+use PHPStan\Internal\DirectoryCreator;
+use PHPStan\Internal\DirectoryCreatorException;
+use PHPStan\ShouldNotHappenException;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use function array_keys;
+use function closedir;
+use function dirname;
+use function error_get_last;
+use function is_dir;
+use function is_file;
+use function opendir;
+use function readdir;
+use function rename;
+use function rmdir;
+use function sha1;
+use function sprintf;
+use function str_starts_with;
+use function strlen;
+use function substr;
+use function uksort;
+use function unlink;
+use function var_export;
+use const DIRECTORY_SEPARATOR;
+
+final class FileCacheStorage implements CacheStorage
+{
+
+	private const CACHED_CLEARED_VERSION = 'v2-new';
+
+	public function __construct(private string $directory)
+	{
+	}
+
+	/**
+	 * @return mixed|null
+	 */
+	public function load(string $key, string $variableKey)
+	{
+		[,, $filePath] = $this->getFilePaths($key);
+
+		return (static function () use ($variableKey, $filePath) {
+			$cacheItem = @include $filePath;
+			if (!$cacheItem instanceof CacheItem) {
+				return null;
+			}
+			if (!$cacheItem->isVariableKeyValid($variableKey)) {
+				return null;
+			}
+
+			return $cacheItem->getData();
+		})();
+	}
+
+	/**
+	 * @param mixed $data
+	 * @throws DirectoryCreatorException
+	 */
+	public function save(string $key, string $variableKey, $data): void
+	{
+		[$firstDirectory, $secondDirectory, $path] = $this->getFilePaths($key);
+		DirectoryCreator::ensureDirectoryExists($this->directory, 0777);
+		DirectoryCreator::ensureDirectoryExists($firstDirectory, 0777);
+		DirectoryCreator::ensureDirectoryExists($secondDirectory, 0777);
+
+		$tmpPath = sprintf('%s/%s.tmp', $this->directory, Random::generate());
+		$errorBefore = error_get_last();
+		$exported = @var_export(new CacheItem($variableKey, $data), true);
+		$errorAfter = error_get_last();
+		if ($errorAfter !== null && $errorBefore !== $errorAfter) {
+			throw new ShouldNotHappenException(sprintf('Error occurred while saving item %s (%s) to cache: %s', $key, $variableKey, $errorAfter['message']));
+		}
+		FileWriter::write(
+			$tmpPath,
+			sprintf(
+				"<?php declare(strict_types = 1);\n\n%s\nreturn %s;",
+				sprintf('// %s', $key),
+				$exported,
+			),
+		);
+
+		$renameSuccess = @rename($tmpPath, $path);
+		if ($renameSuccess) {
+			return;
+		}
+
+		@unlink($tmpPath);
+		if (DIRECTORY_SEPARATOR === '/' || !is_file($path)) {
+			throw new InvalidArgumentException(sprintf('Could not write data to cache file %s.', $path));
+		}
+	}
+
+	/**
+	 * @return array{string, string, string}
+	 */
+	private function getFilePaths(string $key): array
+	{
+		$keyHash = sha1($key);
+		$firstDirectory = sprintf('%s/%s', $this->directory, substr($keyHash, 0, 2));
+		$secondDirectory = sprintf('%s/%s', $firstDirectory, substr($keyHash, 2, 2));
+		$filePath = sprintf('%s/%s.php', $secondDirectory, $keyHash);
+
+		return [
+			$firstDirectory,
+			$secondDirectory,
+			$filePath,
+		];
+	}
+
+	public function clearUnusedFiles(): void
+	{
+		if (!is_dir($this->directory)) {
+			return;
+		}
+
+		$cachedClearedFile = $this->directory . '/cache-cleared';
+		if (is_file($cachedClearedFile)) {
+			try {
+				$cachedClearedContents = FileReader::read($cachedClearedFile);
+				if ($cachedClearedContents === self::CACHED_CLEARED_VERSION) {
+					return;
+				}
+			} catch (CouldNotReadFileException) {
+				return;
+			}
+		}
+
+		$iterator = new RecursiveDirectoryIterator($this->directory);
+		$iterator->setFlags(RecursiveDirectoryIterator::SKIP_DOTS);
+		$files = new RecursiveIteratorIterator($iterator);
+		$beginFunction = sprintf(
+			"<?php declare(strict_types = 1);\n\n%s",
+			sprintf('// %s', 'variadic-function-'),
+		);
+		$beginMethod = sprintf(
+			"<?php declare(strict_types = 1);\n\n%s",
+			sprintf('// %s', 'variadic-method-'),
+		);
+		$beginNew = "<?php declare(strict_types = 1);\n\n//";
+		$emptyDirectoriesToCheck = [];
+		foreach ($files as $file) {
+			try {
+				$path = $file->getPathname();
+				$contents = FileReader::read($path);
+				if (
+					!str_starts_with($contents, $beginFunction)
+					&& !str_starts_with($contents, $beginMethod)
+					&& str_starts_with($contents, $beginNew)
+				) {
+					continue;
+				}
+
+				$emptyDirectoriesToCheck[dirname($path)] = true;
+				$emptyDirectoriesToCheck[dirname($path, 2)] = true;
+
+				@unlink($path);
+			} catch (CouldNotReadFileException) {
+				continue;
+			}
+		}
+
+		uksort($emptyDirectoriesToCheck, static fn ($a, $b) => strlen($b) - strlen($a));
+
+		foreach (array_keys($emptyDirectoriesToCheck) as $directory) {
+			if (!$this->isDirectoryEmpty($directory)) {
+				continue;
+			}
+
+			@rmdir($directory);
+		}
+
+		try {
+			FileWriter::write($cachedClearedFile, self::CACHED_CLEARED_VERSION);
+		} catch (CouldNotWriteFileException) {
+			// pass
+		}
+	}
+
+	private function isDirectoryEmpty(string $directory): bool
+	{
+		$handle = opendir($directory);
+		if ($handle === false) {
+			return false;
+		}
+		while (($entry = readdir($handle)) !== false) {
+			if ($entry !== '.' && $entry !== '..') {
+				closedir($handle);
+				return false;
+			}
+		}
+
+		closedir($handle);
+		return true;
+	}
+
+}
diff --git a/src/Cache/MemoryCacheStorage.php b/src/Cache/MemoryCacheStorage.php
new file mode 100644
index 00000000..e764fa01
--- /dev/null
+++ b/src/Cache/MemoryCacheStorage.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Cache;
+return;
+
+use function var_export;
+
+final class MemoryCacheStorage implements CacheStorage
+{
+
+	/** @var array<string, CacheItem> */
+	private array $storage = [];
+
+	/**
+	 * @return mixed|null
+	 */
+	public function load(string $key, string $variableKey)
+	{
+		if (!isset($this->storage[$key])) {
+			return null;
+		}
+
+		$item = $this->storage[$key];
+		if (!$item->isVariableKeyValid($variableKey)) {
+			return null;
+		}
+
+		return $item->getData();
+	}
+
+	/**
+	 * @param mixed $data
+	 */
+	public function save(string $key, string $variableKey, $data): void
+	{
+		$item = new CacheItem($variableKey, $data);
+		@var_export($item, true);
+		$this->storage[$key] = $item;
+	}
+
+}
diff --git a/src/Classes/ForbiddenClassNameExtension.php b/src/Classes/ForbiddenClassNameExtension.php
new file mode 100644
index 00000000..1001bbb8
--- /dev/null
+++ b/src/Classes/ForbiddenClassNameExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Classes;
+return;
+
+/**
+ * This is the extension interface to implement if you want to dynamically
+ * add forbidden class prefixes to the ClassForbiddenNameCheck rule.
+ *
+ * The idea is that you want to report usages of classes that you're not supposed to use in application.
+ * For example: Generated Doctrine proxies from their configured namespace.
+ *
+ * To register it in the configuration file use the `phpstan.forbiddenClassNamesExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.forbiddenClassNamesExtension
+ * ```
+ *
+ * @api
+ */
+interface ForbiddenClassNameExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.forbiddenClassNamesExtension';
+
+	/** @return array<string, string> */
+	public function getClassPrefixes(): array;
+
+}
diff --git a/src/Collectors/CollectedData.php b/src/Collectors/CollectedData.php
new file mode 100644
index 00000000..bf50ae2b
--- /dev/null
+++ b/src/Collectors/CollectedData.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Collectors;
+return;
+
+use JsonSerializable;
+use PhpParser\Node;
+use ReturnTypeWillChange;
+
+/**
+ * @api
+ */
+final class CollectedData implements JsonSerializable
+{
+
+	/**
+	 * @param mixed $data
+	 * @param class-string<Collector<Node, mixed>> $collectorType
+	 */
+	public function __construct(
+		private $data,
+		private string $filePath,
+		private string $collectorType,
+	)
+	{
+	}
+
+	public function getData(): mixed
+	{
+		return $this->data;
+	}
+
+	public function getFilePath(): string
+	{
+		return $this->filePath;
+	}
+
+	public function changeFilePath(string $newFilePath): self
+	{
+		return new self($this->data, $newFilePath, $this->collectorType);
+	}
+
+	/**
+	 * @return class-string<Collector<Node, mixed>>
+	 */
+	public function getCollectorType(): string
+	{
+		return $this->collectorType;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'data' => $this->data,
+			'filePath' => $this->filePath,
+			'collectorType' => $this->collectorType,
+		];
+	}
+
+	/**
+	 * @param mixed[] $json
+	 */
+	public static function decode(array $json): self
+	{
+		return new self(
+			$json['data'],
+			$json['filePath'],
+			$json['collectorType'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['data'],
+			$properties['filePath'],
+			$properties['collectorType'],
+		);
+	}
+
+}
diff --git a/src/Collectors/Collector.php b/src/Collectors/Collector.php
new file mode 100644
index 00000000..658e2af5
--- /dev/null
+++ b/src/Collectors/Collector.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Collectors;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+
+/**
+ * This is the interface custom collectors implement. To register it in the configuration file
+ * use the `phpstan.collector` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\MyCollector
+ *		tags:
+ *			- phpstan.collector
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/collectors
+ *
+ * @api
+ * @template-covariant TNodeType of Node
+ * @template-covariant TValue
+ */
+interface Collector
+{
+
+	/**
+	 * @return class-string<TNodeType>
+	 */
+	public function getNodeType(): string;
+
+	/**
+	 * @param TNodeType $node
+	 * @return TValue|null Collected data
+	 */
+	public function processNode(Node $node, Scope $scope);
+
+}
diff --git a/src/Collectors/Registry.php b/src/Collectors/Registry.php
new file mode 100644
index 00000000..530ef6a9
--- /dev/null
+++ b/src/Collectors/Registry.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Collectors;
+return;
+
+use PhpParser\Node;
+use function class_implements;
+use function class_parents;
+
+final class Registry
+{
+
+	/** @var Collector[][] */
+	private array $collectors = [];
+
+	/** @var Collector[][] */
+	private array $cache = [];
+
+	/**
+	 * @param Collector[] $collectors
+	 */
+	public function __construct(array $collectors)
+	{
+		foreach ($collectors as $collector) {
+			$this->collectors[$collector->getNodeType()][] = $collector;
+		}
+	}
+
+	/**
+	 * @template TNodeType of Node
+	 * @param class-string<TNodeType> $nodeType
+	 * @return array<Collector<TNodeType, mixed>>
+	 */
+	public function getCollectors(string $nodeType): array
+	{
+		if (!isset($this->cache[$nodeType])) {
+			$parentNodeTypes = [$nodeType] + class_parents($nodeType) + class_implements($nodeType);
+
+			$collectors = [];
+			foreach ($parentNodeTypes as $parentNodeType) {
+				foreach ($this->collectors[$parentNodeType] ?? [] as $collector) {
+					$collectors[] = $collector;
+				}
+			}
+
+			$this->cache[$nodeType] = $collectors;
+		}
+
+		/**
+		 * @var array<Collector<TNodeType, mixed>> $selectedCollectors
+		 */
+		$selectedCollectors = $this->cache[$nodeType];
+
+		return $selectedCollectors;
+	}
+
+}
diff --git a/src/Collectors/RegistryFactory.php b/src/Collectors/RegistryFactory.php
new file mode 100644
index 00000000..7ed4aa41
--- /dev/null
+++ b/src/Collectors/RegistryFactory.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\Collectors;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class RegistryFactory
+{
+
+	public const COLLECTOR_TAG = 'phpstan.collector';
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function create(): Registry
+	{
+		return new Registry(
+			$this->container->getServicesByTag(self::COLLECTOR_TAG),
+		);
+	}
+
+}
diff --git a/src/Command/AnalyseApplication.php b/src/Command/AnalyseApplication.php
new file mode 100644
index 00000000..be912d83
--- /dev/null
+++ b/src/Command/AnalyseApplication.php
@@ -0,0 +1,225 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use PHPStan\Analyser\AnalyserResult;
+use PHPStan\Analyser\AnalyserResultFinalizer;
+use PHPStan\Analyser\Ignore\IgnoredErrorHelper;
+use PHPStan\Analyser\ResultCache\ResultCacheManagerFactory;
+use PHPStan\Internal\BytesHelper;
+use PHPStan\PhpDoc\StubFilesProvider;
+use PHPStan\PhpDoc\StubValidator;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Input\InputInterface;
+use function array_merge;
+use function count;
+use function is_file;
+use function memory_get_peak_usage;
+use function microtime;
+use function sha1_file;
+use function sprintf;
+
+final class AnalyseApplication
+{
+
+	public function __construct(
+		private AnalyserRunner $analyserRunner,
+		private AnalyserResultFinalizer $analyserResultFinalizer,
+		private StubValidator $stubValidator,
+		private ResultCacheManagerFactory $resultCacheManagerFactory,
+		private IgnoredErrorHelper $ignoredErrorHelper,
+		private StubFilesProvider $stubFilesProvider,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param mixed[]|null $projectConfigArray
+	 */
+	public function analyse(
+		array $files,
+		bool $onlyFiles,
+		Output $stdOutput,
+		Output $errorOutput,
+		bool $defaultLevelUsed,
+		bool $debug,
+		?string $projectConfigFile,
+		?array $projectConfigArray,
+		InputInterface $input,
+	): AnalysisResult
+	{
+		$isResultCacheUsed = false;
+		$resultCacheManager = $this->resultCacheManagerFactory->create();
+
+		$ignoredErrorHelperResult = $this->ignoredErrorHelper->initialize();
+		$fileSpecificErrors = [];
+		if (count($ignoredErrorHelperResult->getErrors()) > 0) {
+			$notFileSpecificErrors = $ignoredErrorHelperResult->getErrors();
+			$internalErrors = [];
+			$collectedData = [];
+			$savedResultCache = false;
+			$memoryUsageBytes = memory_get_peak_usage(true);
+			if ($errorOutput->isVeryVerbose()) {
+				$errorOutput->writeLineFormatted('Result cache was not saved because of ignoredErrorHelperResult errors.');
+			}
+			$changedProjectExtensionFilesOutsideOfAnalysedPaths = [];
+		} else {
+			$resultCache = $resultCacheManager->restore($files, $debug, $onlyFiles, $projectConfigArray, $errorOutput);
+			$intermediateAnalyserResult = $this->runAnalyser(
+				$resultCache->getFilesToAnalyse(),
+				$files,
+				$debug,
+				$projectConfigFile,
+				$stdOutput,
+				$errorOutput,
+				$input,
+			);
+
+			$projectStubFiles = $this->stubFilesProvider->getProjectStubFiles();
+
+			$forceValidateStubFiles = (bool) ($_SERVER['__PHPSTAN_FORCE_VALIDATE_STUB_FILES'] ?? false);
+			if (
+				$resultCache->isFullAnalysis()
+				&& count($projectStubFiles) !== 0
+				&& (!$onlyFiles || $forceValidateStubFiles)
+			) {
+				$stubErrors = $this->stubValidator->validate($projectStubFiles, $debug);
+				$intermediateAnalyserResult = new AnalyserResult(
+					array_merge($intermediateAnalyserResult->getUnorderedErrors(), $stubErrors),
+					$intermediateAnalyserResult->getFilteredPhpErrors(),
+					$intermediateAnalyserResult->getAllPhpErrors(),
+					$intermediateAnalyserResult->getLocallyIgnoredErrors(),
+					$intermediateAnalyserResult->getLinesToIgnore(),
+					$intermediateAnalyserResult->getUnmatchedLineIgnores(),
+					$intermediateAnalyserResult->getInternalErrors(),
+					$intermediateAnalyserResult->getCollectedData(),
+					$intermediateAnalyserResult->getDependencies(),
+					$intermediateAnalyserResult->getExportedNodes(),
+					$intermediateAnalyserResult->hasReachedInternalErrorsCountLimit(),
+					$intermediateAnalyserResult->getPeakMemoryUsageBytes(),
+				);
+			}
+
+			$resultCacheResult = $resultCacheManager->process($intermediateAnalyserResult, $resultCache, $errorOutput, $onlyFiles, true);
+			$analyserResult = $this->analyserResultFinalizer->finalize($resultCacheResult->getAnalyserResult(), $onlyFiles, $debug)->getAnalyserResult();
+			$internalErrors = $analyserResult->getInternalErrors();
+			$errors = array_merge(
+				$analyserResult->getErrors(),
+				$analyserResult->getFilteredPhpErrors(),
+			);
+			$hasInternalErrors = count($internalErrors) > 0 || $analyserResult->hasReachedInternalErrorsCountLimit();
+			$memoryUsageBytes = $analyserResult->getPeakMemoryUsageBytes();
+			$isResultCacheUsed = !$resultCache->isFullAnalysis();
+
+			$changedProjectExtensionFilesOutsideOfAnalysedPaths = [];
+			if (
+				$isResultCacheUsed
+				&& $resultCacheResult->isSaved()
+				&& !$onlyFiles
+				&& $projectConfigArray !== null
+			) {
+				foreach ($resultCache->getProjectExtensionFiles() as $file => [$hash, $isAnalysed, $className]) {
+					if ($isAnalysed) {
+						continue;
+					}
+
+					if (!is_file($file)) {
+						$changedProjectExtensionFilesOutsideOfAnalysedPaths[$file] = $className;
+						continue;
+					}
+
+					$newHash = sha1_file($file);
+					if ($newHash === $hash) {
+						continue;
+					}
+
+					$changedProjectExtensionFilesOutsideOfAnalysedPaths[$file] = $className;
+				}
+			}
+
+			$ignoredErrorHelperProcessedResult = $ignoredErrorHelperResult->process($errors, $onlyFiles, $files, $hasInternalErrors);
+			$fileSpecificErrors = $ignoredErrorHelperProcessedResult->getNotIgnoredErrors();
+			$notFileSpecificErrors = $ignoredErrorHelperProcessedResult->getOtherIgnoreMessages();
+			$collectedData = $analyserResult->getCollectedData();
+			$savedResultCache = $resultCacheResult->isSaved();
+		}
+
+		return new AnalysisResult(
+			$fileSpecificErrors,
+			$notFileSpecificErrors,
+			$internalErrors,
+			[],
+			$collectedData,
+			$defaultLevelUsed,
+			$projectConfigFile,
+			$savedResultCache,
+			$memoryUsageBytes,
+			$isResultCacheUsed,
+			$changedProjectExtensionFilesOutsideOfAnalysedPaths,
+		);
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param string[] $allAnalysedFiles
+	 */
+	private function runAnalyser(
+		array $files,
+		array $allAnalysedFiles,
+		bool $debug,
+		?string $projectConfigFile,
+		Output $stdOutput,
+		Output $errorOutput,
+		InputInterface $input,
+	): AnalyserResult
+	{
+		$filesCount = count($files);
+		$allAnalysedFilesCount = count($allAnalysedFiles);
+		if ($filesCount === 0) {
+			$errorOutput->getStyle()->progressStart($allAnalysedFilesCount);
+			$errorOutput->getStyle()->progressAdvance($allAnalysedFilesCount);
+			$errorOutput->getStyle()->progressFinish();
+			return new AnalyserResult([], [], [], [], [], [], [], [], [], [], false, memory_get_peak_usage(true));
+		}
+
+		if (!$debug) {
+			$preFileCallback = null;
+			$postFileCallback = static function (int $step) use ($errorOutput): void {
+				$errorOutput->getStyle()->progressAdvance($step);
+			};
+
+			$errorOutput->getStyle()->progressStart($allAnalysedFilesCount);
+			$errorOutput->getStyle()->progressAdvance($allAnalysedFilesCount - $filesCount);
+		} else {
+			$startTime = null;
+			$preFileCallback = static function (string $file) use ($stdOutput, &$startTime): void {
+				$stdOutput->writeLineFormatted($file);
+				$startTime = microtime(true);
+			};
+			$postFileCallback = null;
+			if ($stdOutput->isDebug()) {
+				$previousMemory = memory_get_peak_usage(true);
+				$postFileCallback = static function () use ($stdOutput, &$previousMemory, &$startTime): void {
+					if ($startTime === null) {
+						throw new ShouldNotHappenException();
+					}
+					$currentTotalMemory = memory_get_peak_usage(true);
+					$elapsedTime = microtime(true) - $startTime;
+					$stdOutput->writeLineFormatted(sprintf('--- consumed %s, total %s, took %.2f s', BytesHelper::bytes($currentTotalMemory - $previousMemory), BytesHelper::bytes($currentTotalMemory), $elapsedTime));
+					$previousMemory = $currentTotalMemory;
+				};
+			}
+		}
+
+		$analyserResult = $this->analyserRunner->runAnalyser($files, $allAnalysedFiles, $preFileCallback, $postFileCallback, $debug, true, $projectConfigFile, $input);
+
+		if (!$debug) {
+			$errorOutput->getStyle()->progressFinish();
+		}
+
+		return $analyserResult;
+	}
+
+}
diff --git a/src/Command/AnalyseCommand.php b/src/Command/AnalyseCommand.php
new file mode 100644
index 00000000..241d833e
--- /dev/null
+++ b/src/Command/AnalyseCommand.php
@@ -0,0 +1,720 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use OndraM\CiDetector\CiDetector;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Command\ErrorFormatter\BaselineNeonErrorFormatter;
+use PHPStan\Command\ErrorFormatter\BaselinePhpErrorFormatter;
+use PHPStan\Command\ErrorFormatter\ErrorFormatter;
+use PHPStan\Command\Symfony\SymfonyOutput;
+use PHPStan\Command\Symfony\SymfonyStyle;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Diagnose\DiagnoseExtension;
+use PHPStan\Diagnose\PHPStanDiagnoseExtension;
+use PHPStan\File\CouldNotWriteFileException;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileReader;
+use PHPStan\File\FileWriter;
+use PHPStan\File\ParentDirectoryRelativePathHelper;
+use PHPStan\File\PathNotFoundException;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\Internal\BytesHelper;
+use PHPStan\Internal\DirectoryCreator;
+use PHPStan\Internal\DirectoryCreatorException;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Input\StringInput;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Output\StreamOutput;
+use Throwable;
+use function array_intersect;
+use function array_key_exists;
+use function array_keys;
+use function array_map;
+use function array_reverse;
+use function array_unique;
+use function array_values;
+use function count;
+use function dirname;
+use function filesize;
+use function fopen;
+use function get_class;
+use function implode;
+use function in_array;
+use function is_array;
+use function is_bool;
+use function is_file;
+use function is_string;
+use function pathinfo;
+use function rewind;
+use function sprintf;
+use function str_contains;
+use function stream_get_contents;
+use function strlen;
+use function substr;
+use const PATHINFO_BASENAME;
+use const PATHINFO_EXTENSION;
+
+/**
+ * @phpstan-import-type Trace from InternalError as InternalErrorTrace
+ */
+final class AnalyseCommand extends Command
+{
+
+	private const NAME = 'analyse';
+
+	public const OPTION_LEVEL = 'level';
+
+	public const DEFAULT_LEVEL = CommandHelper::DEFAULT_LEVEL;
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+		private float $analysisStartTime,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('Analyses source code')
+			->setDefinition([
+				new InputArgument('paths', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Paths with source code to run analysis on'),
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption(self::OPTION_LEVEL, 'l', InputOption::VALUE_REQUIRED, 'Level of rule options - the higher the stricter'),
+				new InputOption(ErrorsConsoleStyle::OPTION_NO_PROGRESS, null, InputOption::VALUE_NONE, 'Do not show progress bar, only results'),
+				new InputOption('debug', null, InputOption::VALUE_NONE, 'Show debug information - which file is analysed, do not catch internal errors'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('error-format', null, InputOption::VALUE_REQUIRED, 'Format in which to print the result of the analysis', null),
+				new InputOption('generate-baseline', 'b', InputOption::VALUE_OPTIONAL, 'Path to a file where the baseline should be saved', false),
+				new InputOption('allow-empty-baseline', null, InputOption::VALUE_NONE, 'Do not error out when the generated baseline is empty'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for analysis'),
+				new InputOption('xdebug', null, InputOption::VALUE_NONE, 'Allow running with Xdebug for debugging purposes'),
+				new InputOption('fix', null, InputOption::VALUE_NONE, 'Launch PHPStan Pro'),
+				new InputOption('watch', null, InputOption::VALUE_NONE, 'Launch PHPStan Pro'),
+				new InputOption('pro', null, InputOption::VALUE_NONE, 'Launch PHPStan Pro'),
+				new InputOption('fail-without-result-cache', null, InputOption::VALUE_NONE, 'Return non-zero exit code when result cache is not used'),
+			]);
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getAliases(): array
+	{
+		return ['analyze'];
+	}
+
+	protected function initialize(InputInterface $input, OutputInterface $output): void
+	{
+		if ((bool) $input->getOption('debug')) {
+			$application = $this->getApplication();
+			if ($application === null) {
+				return;
+			}
+			$application->setCatchExceptions(false);
+			return;
+		}
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$paths = $input->getArgument('paths');
+		$memoryLimit = $input->getOption('memory-limit');
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$level = $input->getOption(self::OPTION_LEVEL);
+		$allowXdebug = $input->getOption('xdebug');
+		$debugEnabled = (bool) $input->getOption('debug');
+		$fix = (bool) $input->getOption('fix') || (bool) $input->getOption('watch') || (bool) $input->getOption('pro');
+		$failWithoutResultCache = (bool) $input->getOption('fail-without-result-cache');
+
+		/** @var string|false|null $generateBaselineFile */
+		$generateBaselineFile = $input->getOption('generate-baseline');
+		if ($generateBaselineFile === false) {
+			$generateBaselineFile = null;
+		} elseif ($generateBaselineFile === null) {
+			$generateBaselineFile = 'phpstan-baseline.neon';
+		}
+
+		$allowEmptyBaseline = (bool) $input->getOption('allow-empty-baseline');
+
+		if (
+			!is_array($paths)
+			|| (!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($level) && $level !== null)
+			|| (!is_bool($allowXdebug))
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				$paths,
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				$generateBaselineFile,
+				$level,
+				$allowXdebug,
+				$debugEnabled,
+				true,
+			);
+		} catch (InceptionNotSuccessfulException $e) {
+			return 1;
+		}
+
+		if ($generateBaselineFile === null && $allowEmptyBaseline) {
+			$inceptionResult->getStdOutput()->getStyle()->error('You must pass the --generate-baseline option alongside --allow-empty-baseline.');
+			return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+		}
+
+		$errorOutput = $inceptionResult->getErrorOutput();
+		$errorFormat = $input->getOption('error-format');
+
+		if (!is_string($errorFormat) && $errorFormat !== null) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($errorFormat === null) {
+			$errorFormat = $inceptionResult->getContainer()->getParameter('errorFormat');
+		}
+
+		if ($errorFormat === null) {
+			$errorFormat = 'table';
+		}
+
+		$container = $inceptionResult->getContainer();
+		$errorFormatterServiceName = sprintf('errorFormatter.%s', $errorFormat);
+		if (!$container->hasService($errorFormatterServiceName)) {
+			$errorOutput->writeLineFormatted(sprintf(
+				'Error formatter "%s" not found. Available error formatters are: %s',
+				$errorFormat,
+				implode(', ', array_map(static fn (string $name): string => substr($name, strlen('errorFormatter.')), $container->findServiceNamesByType(ErrorFormatter::class))),
+			));
+			return 1;
+		}
+
+		$generateBaselineFile = $inceptionResult->getGenerateBaselineFile();
+		if ($generateBaselineFile !== null) {
+			$baselineExtension = pathinfo($generateBaselineFile, PATHINFO_EXTENSION);
+			if ($baselineExtension === '') {
+				$inceptionResult->getStdOutput()->getStyle()->error(sprintf('Baseline filename must have an extension, %s provided instead.', pathinfo($generateBaselineFile, PATHINFO_BASENAME)));
+				return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+			}
+
+			if (!in_array($baselineExtension, ['neon', 'php'], true)) {
+				$inceptionResult->getStdOutput()->getStyle()->error(sprintf('Baseline filename extension must be .neon or .php, .%s was used instead.', $baselineExtension));
+
+				return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+			}
+		}
+
+		try {
+			[$files, $onlyFiles] = $inceptionResult->getFiles();
+		} catch (PathNotFoundException $e) {
+			$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+			$inceptionResult->getErrorOutput()->writeLineFormatted(sprintf('<error>%s</error>', $e->getMessage()));
+			return 1;
+		} catch (InceptionNotSuccessfulException) {
+			$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+			return 1;
+		}
+
+		if (count($files) === 0) {
+			$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+
+			$inceptionResult->getErrorOutput()->getStyle()->error('No files found to analyse.');
+
+			return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+		}
+
+		$analysedConfigFiles = array_intersect($files, $container->getParameter('allConfigFiles'));
+		/** @var RelativePathHelper $relativePathHelper */
+		$relativePathHelper = $container->getService('relativePathHelper');
+		foreach ($analysedConfigFiles as $analysedConfigFile) {
+			$fileSize = @filesize($analysedConfigFile);
+			if ($fileSize === false) {
+				continue;
+			}
+
+			if ($fileSize <= 512 * 1024) {
+				continue;
+			}
+
+			$inceptionResult->getErrorOutput()->getStyle()->warning(sprintf(
+				'Configuration file %s (%s) is too big and might slow down PHPStan. Consider adding it to excludePaths.',
+				$relativePathHelper->getRelativePath($analysedConfigFile),
+				BytesHelper::bytes($fileSize),
+			));
+		}
+
+		if ($fix) {
+			if ($generateBaselineFile !== null) {
+				$inceptionResult->getStdOutput()->getStyle()->error('You cannot pass the --generate-baseline option when running PHPStan Pro.');
+				return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+			}
+
+			return $this->runFixer($inceptionResult, $container, $onlyFiles, $input, $output, $files);
+		}
+
+		/** @var AnalyseApplication $application */
+		$application = $container->getByType(AnalyseApplication::class);
+
+		$debug = $input->getOption('debug');
+		if (!is_bool($debug)) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$analysisResult = $application->analyse(
+				$files,
+				$onlyFiles,
+				$inceptionResult->getStdOutput(),
+				$inceptionResult->getErrorOutput(),
+				$inceptionResult->isDefaultLevelUsed(),
+				$debug,
+				$inceptionResult->getProjectConfigFile(),
+				$inceptionResult->getProjectConfigArray(),
+				$input,
+			);
+		} catch (Throwable $t) {
+			if ($debug) {
+				$stdOutput = $inceptionResult->getStdOutput();
+				$stdOutput->writeRaw(sprintf(
+					'Uncaught %s: %s in %s:%d',
+					get_class($t),
+					$t->getMessage(),
+					$t->getFile(),
+					$t->getLine(),
+				));
+				$stdOutput->writeLineFormatted('');
+				$stdOutput->writeRaw($t->getTraceAsString());
+				$stdOutput->writeLineFormatted('');
+
+				$previous = $t->getPrevious();
+				while ($previous !== null) {
+					$stdOutput->writeLineFormatted('');
+					$stdOutput->writeLineFormatted('Caused by:');
+					$stdOutput->writeRaw(sprintf(
+						'Uncaught %s: %s in %s:%d',
+						get_class($previous),
+						$previous->getMessage(),
+						$previous->getFile(),
+						$previous->getLine(),
+					));
+					$stdOutput->writeRaw($previous->getTraceAsString());
+					$stdOutput->writeLineFormatted('');
+					$previous = $previous->getPrevious();
+				}
+
+				return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+			}
+
+			throw $t;
+		}
+
+		/**
+		 * Variable $internalErrorsTuples contains both "internal errors"
+		 * and "errors with non-ignorable exception" as InternalError objects.
+		 */
+		$internalErrorsTuples = [];
+		$internalFileSpecificErrors = [];
+		foreach ($analysisResult->getInternalErrorObjects() as $internalError) {
+			$internalErrorsTuples[$internalError->getMessage()] = [new InternalError(
+				$internalError->getTraceAsString() !== null ? sprintf('Internal error: %s', $internalError->getMessage()) : $internalError->getMessage(),
+				$internalError->getContextDescription(),
+				$internalError->getTrace(),
+				$internalError->getTraceAsString(),
+				$internalError->shouldReportBug(),
+			), false];
+		}
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			if (!$fileSpecificError->hasNonIgnorableException()) {
+				continue;
+			}
+
+			$message = $fileSpecificError->getMessage();
+			$metadata = $fileSpecificError->getMetadata();
+			$hasStackTrace = false;
+			if (
+				$fileSpecificError->getIdentifier() === 'phpstan.internal'
+				&& array_key_exists(InternalError::STACK_TRACE_AS_STRING_METADATA_KEY, $metadata)
+			) {
+				$message = sprintf('Internal error: %s', $message);
+				$hasStackTrace = true;
+			}
+
+			if (!$hasStackTrace) {
+				if (!array_key_exists($fileSpecificError->getMessage(), $internalFileSpecificErrors)) {
+					$internalFileSpecificErrors[$fileSpecificError->getMessage()] = $fileSpecificError;
+				}
+			}
+
+			$internalErrorsTuples[$fileSpecificError->getMessage()] = [new InternalError(
+				$message,
+				sprintf('analysing file %s', $fileSpecificError->getTraitFilePath() ?? $fileSpecificError->getFilePath()),
+				$metadata[InternalError::STACK_TRACE_METADATA_KEY] ?? [],
+				$metadata[InternalError::STACK_TRACE_AS_STRING_METADATA_KEY] ?? null,
+				true,
+			), !$hasStackTrace];
+		}
+
+		$internalErrorsTuples = array_values($internalErrorsTuples);
+
+		$fileHelper = $container->getByType(FileHelper::class);
+
+		/**
+		 * Variable $internalErrors only contains non-file-specific "internal errors".
+		 */
+		$internalErrors = [];
+		foreach ($internalErrorsTuples as [$internalError, $isInFileSpecificErrors]) {
+			if ($isInFileSpecificErrors) {
+				continue;
+			}
+
+			$internalErrors[] = new InternalError(
+				$this->getMessageFromInternalError($fileHelper, $internalError, $output->getVerbosity()),
+				$internalError->getContextDescription(),
+				$internalError->getTrace(),
+				$internalError->getTraceAsString(),
+				$internalError->shouldReportBug(),
+			);
+		}
+
+		if ($generateBaselineFile !== null) {
+			$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+			if (count($internalErrorsTuples) > 0) {
+				foreach ($internalErrorsTuples as [$internalError]) {
+					$inceptionResult->getStdOutput()->writeLineFormatted($internalError->getMessage());
+					$inceptionResult->getStdOutput()->writeLineFormatted('');
+				}
+
+				$inceptionResult->getStdOutput()->getStyle()->error(sprintf(
+					'%s occurred. Baseline could not be generated.',
+					count($internalErrors) === 1 ? 'An internal error' : 'Internal errors',
+				));
+
+				return $inceptionResult->handleReturn(1, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+			}
+
+			return $this->generateBaseline($generateBaselineFile, $inceptionResult, $analysisResult, $output, $allowEmptyBaseline, $baselineExtension, $failWithoutResultCache);
+		}
+
+		/** @var ErrorFormatter $errorFormatter */
+		$errorFormatter = $container->getService($errorFormatterServiceName);
+
+		if (count($internalErrorsTuples) > 0) {
+			$analysisResult = new AnalysisResult(
+				array_values($internalFileSpecificErrors),
+				array_map(static fn (InternalError $internalError) => $internalError->getMessage(), $internalErrors),
+				[],
+				[],
+				[],
+				$analysisResult->isDefaultLevelUsed(),
+				$analysisResult->getProjectConfigFile(),
+				$analysisResult->isResultCacheSaved(),
+				$analysisResult->getPeakMemoryUsageBytes(),
+				$analysisResult->isResultCacheUsed(),
+				$analysisResult->getChangedProjectExtensionFilesOutsideOfAnalysedPaths(),
+			);
+
+			$exitCode = $errorFormatter->formatErrors($analysisResult, $inceptionResult->getStdOutput());
+
+			$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+
+			$errorOutput->writeLineFormatted('⚠️  Result is incomplete because of severe errors. ⚠️');
+			$errorOutput->writeLineFormatted('   Fix these errors first and then re-run PHPStan');
+			$errorOutput->writeLineFormatted('   to get all reported errors.');
+			$errorOutput->writeLineFormatted('');
+
+			return $inceptionResult->handleReturn(
+				$exitCode,
+				$analysisResult->getPeakMemoryUsageBytes(),
+				$this->analysisStartTime,
+			);
+		}
+
+		$exitCode = $errorFormatter->formatErrors($analysisResult, $inceptionResult->getStdOutput());
+		if ($failWithoutResultCache && !$analysisResult->isResultCacheUsed()) {
+			$exitCode = 2;
+		}
+
+		if (
+			$analysisResult->isResultCacheUsed()
+			&& $analysisResult->isResultCacheSaved()
+			&& !$onlyFiles
+			&& $inceptionResult->getProjectConfigArray() !== null
+		) {
+			$projectServicesNotInAnalysedPaths = array_values(array_unique($analysisResult->getChangedProjectExtensionFilesOutsideOfAnalysedPaths()));
+			$projectServiceFileNamesNotInAnalysedPaths = array_keys($analysisResult->getChangedProjectExtensionFilesOutsideOfAnalysedPaths());
+
+			if (count($projectServicesNotInAnalysedPaths) > 0) {
+				$one = count($projectServicesNotInAnalysedPaths) === 1;
+				$errorOutput->writeLineFormatted('<comment>Result cache might not behave correctly.</comment>');
+				$errorOutput->writeLineFormatted(sprintf('You\'re using custom %s in your project config', $one ? 'extension' : 'extensions'));
+				$errorOutput->writeLineFormatted(sprintf('but %s not part of analysed paths:', $one ? 'this extension is' : 'these extensions are'));
+				$errorOutput->writeLineFormatted('');
+				foreach ($projectServicesNotInAnalysedPaths as $service) {
+					$errorOutput->writeLineFormatted(sprintf('- %s', $service));
+				}
+
+				$errorOutput->writeLineFormatted('');
+
+				$errorOutput->writeLineFormatted('When you edit them and re-run PHPStan, the result cache will get stale.');
+
+				$directoriesToAdd = [];
+				foreach ($projectServiceFileNamesNotInAnalysedPaths as $path) {
+					$directoriesToAdd[] = dirname($relativePathHelper->getRelativePath($path));
+				}
+
+				$directoriesToAdd = array_unique($directoriesToAdd);
+				$oneDirectory = count($directoriesToAdd) === 1;
+
+				$errorOutput->writeLineFormatted(sprintf('Add %s to your analysed paths to get rid of this problem:', $oneDirectory ? 'this directory' : 'these directories'));
+
+				$errorOutput->writeLineFormatted('');
+
+				foreach ($directoriesToAdd as $directory) {
+					$errorOutput->writeLineFormatted(sprintf('- %s', $directory));
+				}
+
+				$errorOutput->writeLineFormatted('');
+
+				return $inceptionResult->handleReturn(1, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+			}
+		}
+
+		$this->runDiagnoseExtensions($container, $inceptionResult->getErrorOutput());
+
+		return $inceptionResult->handleReturn(
+			$exitCode,
+			$analysisResult->getPeakMemoryUsageBytes(),
+			$this->analysisStartTime,
+		);
+	}
+
+	private function createStreamOutput(): StreamOutput
+	{
+		$resource = fopen('php://memory', 'w', false);
+		if ($resource === false) {
+			throw new ShouldNotHappenException();
+		}
+		return new StreamOutput($resource);
+	}
+
+	private function getMessageFromInternalError(FileHelper $fileHelper, InternalError $internalError, int $verbosity): string
+	{
+		$message = sprintf('%s while %s', $internalError->getMessage(), $internalError->getContextDescription());
+		$hasLarastan = false;
+		$isLaravelLast = false;
+
+		foreach (array_reverse($internalError->getTrace()) as $traceItem) {
+			if ($traceItem['file'] === null) {
+				continue;
+			}
+
+			$file = $fileHelper->normalizePath($traceItem['file'], '/');
+
+			if (str_contains($file, '/larastan/')) {
+				$hasLarastan = true;
+				$isLaravelLast = false;
+				continue;
+			}
+
+			if (!str_contains($file, '/laravel/framework/')) {
+				continue;
+			}
+
+			$isLaravelLast = true;
+		}
+		if ($hasLarastan) {
+			if ($isLaravelLast) {
+				$message .= "\n";
+				$message .= "\n" . 'This message is coming from Laravel Framework itself.';
+				$message .= "\n" . 'Larastan boots up your application in order to provide';
+				$message .= "\n" . 'smarter static analysis of your codebase.';
+				$message .= "\n";
+				$message .= "\n" . 'In order to do that, the environment you run PHPStan in';
+				$message .= "\n" . 'must match the environment you run your application in.';
+				$message .= "\n";
+				$message .= "\n" . 'Make sure you\'ve set your environment variables';
+				$message .= "\n" . 'or the .env file correctly.';
+
+				return $message;
+			}
+
+			$bugReportUrl = 'https://github.com/larastan/larastan/issues/new?template=bug-report.md';
+		} else {
+			$bugReportUrl = 'https://github.com/phpstan/phpstan/issues/new?template=Bug_report.yaml';
+		}
+		if ($internalError->getTraceAsString() !== null) {
+			if (OutputInterface::VERBOSITY_VERBOSE <= $verbosity) {
+				$firstTraceItem = $internalError->getTrace()[0] ?? null;
+				$trace = '';
+				if ($firstTraceItem !== null && $firstTraceItem['file'] !== null && $firstTraceItem['line'] !== null) {
+					$trace = sprintf('## %s(%d)%s', $firstTraceItem['file'], $firstTraceItem['line'], "\n");
+				}
+				$trace .= $internalError->getTraceAsString();
+
+				if ($internalError->shouldReportBug()) {
+					$message .= sprintf('%sPost the following stack trace to %s: %s%s', "\n", $bugReportUrl, "\n", $trace);
+				} else {
+					$message .= sprintf('%s%s', "\n\n", $trace);
+				}
+			} else {
+				if ($internalError->shouldReportBug()) {
+					$message .= sprintf('%sRun PHPStan with -v option and post the stack trace to:%s%s%s', "\n\n", "\n", $bugReportUrl, "\n");
+				} else {
+					$message .= sprintf('%sRun PHPStan with -v option to see the stack trace', "\n");
+				}
+			}
+		}
+
+		return $message;
+	}
+
+	private function generateBaseline(string $generateBaselineFile, InceptionResult $inceptionResult, AnalysisResult $analysisResult, OutputInterface $output, bool $allowEmptyBaseline, string $baselineExtension, bool $failWithoutResultCache): int
+	{
+		if (!$allowEmptyBaseline && !$analysisResult->hasErrors()) {
+			$inceptionResult->getStdOutput()->getStyle()->error('No errors were found during the analysis. Baseline could not be generated.');
+			$inceptionResult->getStdOutput()->writeLineFormatted('To allow generating empty baselines, pass <fg=cyan>--allow-empty-baseline</> option.');
+
+			return $inceptionResult->handleReturn(1, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+		}
+
+		$streamOutput = $this->createStreamOutput();
+		$errorConsoleStyle = new ErrorsConsoleStyle(new StringInput(''), $streamOutput);
+		$baselineOutput = new SymfonyOutput($streamOutput, new SymfonyStyle($errorConsoleStyle));
+		$baselineFileDirectory = dirname($generateBaselineFile);
+		$baselinePathHelper = new ParentDirectoryRelativePathHelper($baselineFileDirectory);
+
+		if ($baselineExtension === 'php') {
+			$baselineErrorFormatter = new BaselinePhpErrorFormatter($baselinePathHelper);
+			$baselineErrorFormatter->formatErrors($analysisResult, $baselineOutput);
+		} else {
+			$baselineErrorFormatter = new BaselineNeonErrorFormatter($baselinePathHelper);
+			$existingBaselineContent = is_file($generateBaselineFile) ? FileReader::read($generateBaselineFile) : '';
+			$baselineErrorFormatter->formatErrors($analysisResult, $baselineOutput, $existingBaselineContent);
+		}
+
+		$stream = $streamOutput->getStream();
+		rewind($stream);
+		$baselineContents = stream_get_contents($stream);
+		if ($baselineContents === false) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			DirectoryCreator::ensureDirectoryExists($baselineFileDirectory, 0644);
+		} catch (DirectoryCreatorException $e) {
+			$inceptionResult->getStdOutput()->writeLineFormatted($e->getMessage());
+
+			return $inceptionResult->handleReturn(1, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+		}
+
+		try {
+			FileWriter::write($generateBaselineFile, $baselineContents);
+		} catch (CouldNotWriteFileException $e) {
+			$inceptionResult->getStdOutput()->writeLineFormatted($e->getMessage());
+
+			return $inceptionResult->handleReturn(1, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+		}
+
+		$errorsCount = 0;
+		$unignorableCount = 0;
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			if (!$fileSpecificError->canBeIgnored()) {
+				$unignorableCount++;
+				if ($output->isVeryVerbose()) {
+					$inceptionResult->getStdOutput()->writeLineFormatted('<error>Unignorable errors could not be added to the baseline:</error>');
+					$inceptionResult->getStdOutput()->writeLineFormatted($fileSpecificError->getMessage());
+					$inceptionResult->getStdOutput()->writeLineFormatted($fileSpecificError->getFile());
+					$inceptionResult->getStdOutput()->writeLineFormatted('');
+				}
+				continue;
+			}
+
+			$errorsCount++;
+		}
+
+		$message = sprintf('Baseline generated with %d %s.', $errorsCount, $errorsCount === 1 ? 'error' : 'errors');
+
+		if (
+			$unignorableCount === 0
+			&& count($analysisResult->getNotFileSpecificErrors()) === 0
+		) {
+			$inceptionResult->getStdOutput()->getStyle()->success($message);
+		} else {
+			if ($output->isVeryVerbose()) {
+				$inceptionResult->getStdOutput()->getStyle()->warning($message . "\nSome errors could not be put into baseline.");
+			} else {
+				$inceptionResult->getStdOutput()->getStyle()->warning($message . "\nSome errors could not be put into baseline. Re-run PHPStan with \"-vv\" and fix them.");
+			}
+		}
+
+		$exitCode = 0;
+		if ($failWithoutResultCache && !$analysisResult->isResultCacheUsed()) {
+			$exitCode = 2;
+		}
+
+		return $inceptionResult->handleReturn($exitCode, $analysisResult->getPeakMemoryUsageBytes(), $this->analysisStartTime);
+	}
+
+	/**
+	 * @param string[] $files
+	 */
+	private function runFixer(InceptionResult $inceptionResult, Container $container, bool $onlyFiles, InputInterface $input, OutputInterface $output, array $files): int
+	{
+		$ciDetector = new CiDetector();
+		if ($ciDetector->isCiDetected()) {
+			$inceptionResult->getStdOutput()->writeLineFormatted('PHPStan Pro can\'t run in CI environment yet. Stay tuned!');
+
+			return $inceptionResult->handleReturn(1, null, $this->analysisStartTime);
+		}
+
+		/** @var FixerApplication $fixerApplication */
+		$fixerApplication = $container->getByType(FixerApplication::class);
+
+		return $fixerApplication->run(
+			$inceptionResult->getProjectConfigFile(),
+			$input,
+			$output,
+			count($files),
+			$_SERVER['argv'][0],
+		);
+	}
+
+	private function runDiagnoseExtensions(Container $container, Output $errorOutput): void
+	{
+		if (!$errorOutput->isDebug()) {
+			return;
+		}
+
+		/** @var PHPStanDiagnoseExtension $phpstanDiagnoseExtension */
+		$phpstanDiagnoseExtension = $container->getService('phpstanDiagnoseExtension');
+
+		// not using tag for this extension to make sure it's always first
+		$phpstanDiagnoseExtension->print($errorOutput);
+
+		/** @var DiagnoseExtension $extension */
+		foreach ($container->getServicesByTag(DiagnoseExtension::EXTENSION_TAG) as $extension) {
+			$extension->print($errorOutput);
+		}
+	}
+
+}
diff --git a/src/Command/AnalyserRunner.php b/src/Command/AnalyserRunner.php
new file mode 100644
index 00000000..5d586ba9
--- /dev/null
+++ b/src/Command/AnalyserRunner.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Closure;
+use PHPStan\Analyser\Analyser;
+use PHPStan\Analyser\AnalyserResult;
+use PHPStan\Parallel\ParallelAnalyser;
+use PHPStan\Parallel\Scheduler;
+use PHPStan\Process\CpuCoreCounter;
+use PHPStan\ShouldNotHappenException;
+use React\EventLoop\StreamSelectLoop;
+use Symfony\Component\Console\Input\InputInterface;
+use function count;
+use function function_exists;
+use function is_file;
+use function memory_get_peak_usage;
+
+final class AnalyserRunner
+{
+
+	public function __construct(
+		private Scheduler $scheduler,
+		private Analyser $analyser,
+		private ParallelAnalyser $parallelAnalyser,
+		private CpuCoreCounter $cpuCoreCounter,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param string[] $allAnalysedFiles
+	 * @param Closure(string $file): void|null $preFileCallback
+	 * @param Closure(int ): void|null $postFileCallback
+	 */
+	public function runAnalyser(
+		array $files,
+		array $allAnalysedFiles,
+		?Closure $preFileCallback,
+		?Closure $postFileCallback,
+		bool $debug,
+		bool $allowParallel,
+		?string $projectConfigFile,
+		InputInterface $input,
+	): AnalyserResult
+	{
+		$filesCount = count($files);
+		if ($filesCount === 0) {
+			return new AnalyserResult([], [], [], [], [], [], [], [], [], [], false, memory_get_peak_usage(true));
+		}
+
+		$schedule = $this->scheduler->scheduleWork($this->cpuCoreCounter->getNumberOfCpuCores(), $files);
+		$mainScript = null;
+		if (isset($_SERVER['argv'][0]) && is_file($_SERVER['argv'][0])) {
+			$mainScript = $_SERVER['argv'][0];
+		}
+
+		if (
+			!$debug
+			&& $allowParallel
+			&& function_exists('proc_open')
+			&& $mainScript !== null
+			&& $schedule->getNumberOfProcesses() > 0
+		) {
+			$loop = new StreamSelectLoop();
+			$result = null;
+			$promise = $this->parallelAnalyser->analyse($loop, $schedule, $mainScript, $postFileCallback, $projectConfigFile, $input, null);
+			$promise->then(static function (AnalyserResult $tmp) use (&$result): void {
+				$result = $tmp;
+			});
+			$loop->run();
+			if ($result === null) {
+				throw new ShouldNotHappenException();
+			}
+			return $result;
+		}
+
+		return $this->analyser->analyse(
+			$files,
+			$preFileCallback,
+			$postFileCallback,
+			$debug,
+			$allAnalysedFiles,
+		);
+	}
+
+}
diff --git a/src/Command/AnalysisResult.php b/src/Command/AnalysisResult.php
new file mode 100644
index 00000000..ed321d86
--- /dev/null
+++ b/src/Command/AnalysisResult.php
@@ -0,0 +1,152 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Collectors\CollectedData;
+use function count;
+use function usort;
+
+/**
+ * @api
+ */
+final class AnalysisResult
+{
+
+	/** @var list<Error> sorted by their file name, line number and message */
+	private array $fileSpecificErrors;
+
+	/**
+	 * @param list<Error> $fileSpecificErrors
+	 * @param list<string> $notFileSpecificErrors
+	 * @param list<InternalError> $internalErrors
+	 * @param list<string> $warnings
+	 * @param list<CollectedData> $collectedData
+	 * @param array<string, string> $changedProjectExtensionFilesOutsideOfAnalysedPaths
+	 */
+	public function __construct(
+		array $fileSpecificErrors,
+		private array $notFileSpecificErrors,
+		private array $internalErrors,
+		private array $warnings,
+		private array $collectedData,
+		private bool $defaultLevelUsed,
+		private ?string $projectConfigFile,
+		private bool $savedResultCache,
+		private int $peakMemoryUsageBytes,
+		private bool $isResultCacheUsed,
+		private array $changedProjectExtensionFilesOutsideOfAnalysedPaths,
+	)
+	{
+		usort(
+			$fileSpecificErrors,
+			static fn (Error $a, Error $b): int => [
+				$a->getFile(),
+				$a->getLine(),
+				$a->getMessage(),
+			] <=> [
+				$b->getFile(),
+				$b->getLine(),
+				$b->getMessage(),
+			],
+		);
+
+		$this->fileSpecificErrors = $fileSpecificErrors;
+	}
+
+	public function hasErrors(): bool
+	{
+		return $this->getTotalErrorsCount() > 0;
+	}
+
+	public function getTotalErrorsCount(): int
+	{
+		return count($this->fileSpecificErrors) + count($this->notFileSpecificErrors);
+	}
+
+	/**
+	 * @return list<Error> sorted by their file name, line number and message
+	 */
+	public function getFileSpecificErrors(): array
+	{
+		return $this->fileSpecificErrors;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getNotFileSpecificErrors(): array
+	{
+		return $this->notFileSpecificErrors;
+	}
+
+	/**
+	 * @return list<InternalError>
+	 */
+	public function getInternalErrorObjects(): array
+	{
+		return $this->internalErrors;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getWarnings(): array
+	{
+		return $this->warnings;
+	}
+
+	public function hasWarnings(): bool
+	{
+		return count($this->warnings) > 0;
+	}
+
+	/**
+	 * @return list<CollectedData>
+	 */
+	public function getCollectedData(): array
+	{
+		return $this->collectedData;
+	}
+
+	public function isDefaultLevelUsed(): bool
+	{
+		return $this->defaultLevelUsed;
+	}
+
+	public function getProjectConfigFile(): ?string
+	{
+		return $this->projectConfigFile;
+	}
+
+	public function hasInternalErrors(): bool
+	{
+		return count($this->internalErrors) > 0;
+	}
+
+	public function isResultCacheSaved(): bool
+	{
+		return $this->savedResultCache;
+	}
+
+	public function getPeakMemoryUsageBytes(): int
+	{
+		return $this->peakMemoryUsageBytes;
+	}
+
+	public function isResultCacheUsed(): bool
+	{
+		return $this->isResultCacheUsed;
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	public function getChangedProjectExtensionFilesOutsideOfAnalysedPaths(): array
+	{
+		return $this->changedProjectExtensionFilesOutsideOfAnalysedPaths;
+	}
+
+}
diff --git a/src/Command/ClearResultCacheCommand.php b/src/Command/ClearResultCacheCommand.php
new file mode 100644
index 00000000..5928bb00
--- /dev/null
+++ b/src/Command/ClearResultCacheCommand.php
@@ -0,0 +1,102 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use PHPStan\Analyser\ResultCache\ResultCacheClearer;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use function is_bool;
+use function is_string;
+
+final class ClearResultCacheCommand extends Command
+{
+
+	private const NAME = 'clear-result-cache';
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('Clears the result cache.')
+			->setDefinition([
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('debug', null, InputOption::VALUE_NONE, 'Show debug information - which file is analysed, do not catch internal errors'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for clearing result cache'),
+				new InputOption('xdebug', null, InputOption::VALUE_NONE, 'Allow running with Xdebug for debugging purposes'),
+			]);
+	}
+
+	protected function initialize(InputInterface $input, OutputInterface $output): void
+	{
+		if ((bool) $input->getOption('debug')) {
+			$application = $this->getApplication();
+			if ($application === null) {
+				throw new ShouldNotHappenException();
+			}
+			$application->setCatchExceptions(false);
+			return;
+		}
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$memoryLimit = $input->getOption('memory-limit');
+		$debugEnabled = (bool) $input->getOption('debug');
+		$allowXdebug = $input->getOption('xdebug');
+
+		if (
+			(!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_bool($allowXdebug))
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				[],
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				null,
+				'0',
+				$allowXdebug,
+				$debugEnabled,
+				true,
+			);
+		} catch (InceptionNotSuccessfulException) {
+			return 1;
+		}
+
+		$container = $inceptionResult->getContainer();
+
+		$resultCacheClearer = $container->getByType(ResultCacheClearer::class);
+		$path = $resultCacheClearer->clear();
+
+		$output->writeln('<info>Result cache cleared from directory:</info>');
+		$output->writeln($path);
+
+		return 0;
+	}
+
+}
diff --git a/src/Command/CommandHelper.php b/src/Command/CommandHelper.php
new file mode 100644
index 00000000..f1975349
--- /dev/null
+++ b/src/Command/CommandHelper.php
@@ -0,0 +1,599 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Composer\Semver\Semver;
+use Composer\XdebugHandler\XdebugHandler;
+use Nette\DI\Helpers;
+use Nette\DI\InvalidConfigurationException;
+use Nette\DI\ServiceCreationException;
+use Nette\FileNotFoundException;
+use Nette\InvalidStateException;
+use Nette\Schema\ValidationException;
+use Nette\Utils\AssertionException;
+use Nette\Utils\Strings;
+use PHPStan\Cache\FileCacheStorage;
+use PHPStan\Command\Symfony\SymfonyOutput;
+use PHPStan\Command\Symfony\SymfonyStyle;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\ContainerFactory;
+use PHPStan\DependencyInjection\DuplicateIncludedFilesException;
+use PHPStan\DependencyInjection\InvalidExcludePathsException;
+use PHPStan\DependencyInjection\InvalidIgnoredErrorPatternsException;
+use PHPStan\DependencyInjection\LoaderFactory;
+use PHPStan\ExtensionInstaller\GeneratedConfig;
+use PHPStan\File\FileExcluder;
+use PHPStan\File\FileFinder;
+use PHPStan\File\FileHelper;
+use PHPStan\File\SimpleRelativePathHelper;
+use PHPStan\Internal\ComposerHelper;
+use PHPStan\Internal\DirectoryCreator;
+use PHPStan\Internal\DirectoryCreatorException;
+use PHPStan\PhpDoc\StubFilesProvider;
+use PHPStan\ShouldNotHappenException;
+use ReflectionClass;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\ConsoleOutputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Throwable;
+use function array_filter;
+use function array_key_exists;
+use function array_map;
+use function array_values;
+use function class_exists;
+use function count;
+use function dirname;
+use function error_get_last;
+use function get_class;
+use function getcwd;
+use function getenv;
+use function gettype;
+use function implode;
+use function ini_get;
+use function ini_set;
+use function is_dir;
+use function is_file;
+use function is_readable;
+use function is_string;
+use function register_shutdown_function;
+use function spl_autoload_functions;
+use function sprintf;
+use function str_contains;
+use function str_repeat;
+use function sys_get_temp_dir;
+use const DIRECTORY_SEPARATOR;
+use const E_ERROR;
+use const PHP_VERSION_ID;
+
+final class CommandHelper
+{
+
+	public const DEFAULT_LEVEL = '0';
+
+	private static ?string $reservedMemory = null;
+
+	/**
+	 * @param string[] $paths
+	 * @param string[] $composerAutoloaderProjectPaths
+	 *
+	 * @throws InceptionNotSuccessfulException
+	 */
+	public static function begin(
+		InputInterface $input,
+		OutputInterface $output,
+		array $paths,
+		?string $memoryLimit,
+		?string $autoloadFile,
+		array $composerAutoloaderProjectPaths,
+		?string $projectConfigFile,
+		?string $generateBaselineFile,
+		?string $level,
+		bool $allowXdebug,
+		bool $debugEnabled,
+		bool $cleanupContainerCache,
+	): InceptionResult
+	{
+		$stdOutput = new SymfonyOutput($output, new SymfonyStyle(new ErrorsConsoleStyle($input, $output)));
+
+		$errorOutput = (static function () use ($input, $output): Output {
+			$symfonyErrorOutput = $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output;
+			return new SymfonyOutput($symfonyErrorOutput, new SymfonyStyle(new ErrorsConsoleStyle($input, $symfonyErrorOutput)));
+		})();
+
+		if (!$allowXdebug) {
+			$xdebug = new XdebugHandler('phpstan');
+			$xdebug->setPersistent();
+			$xdebug->check();
+			unset($xdebug);
+		}
+
+		if ($allowXdebug) {
+			if (!XdebugHandler::isXdebugActive()) {
+				$errorOutput->getStyle()->note('You are running with "--xdebug" enabled, but the Xdebug PHP extension is not active. The process will not halt at breakpoints.');
+			} else {
+				$errorOutput->getStyle()->note("You are running with \"--xdebug\" enabled, and the Xdebug PHP extension is active.\nThe process will halt at breakpoints, but PHPStan will run much slower.\nUse this only if you are debugging PHPStan itself or your custom extensions.");
+			}
+		} elseif (XdebugHandler::isXdebugActive()) {
+			$errorOutput->getStyle()->note('The Xdebug PHP extension is active, but "--xdebug" is not used. This may slow down performance and the process will not halt at breakpoints.');
+		} elseif ($debugEnabled) {
+			$v = XdebugHandler::getSkippedVersion();
+			if ($v !== '') {
+				$errorOutput->getStyle()->note(
+					"The Xdebug PHP extension is active, but \"--xdebug\" is not used.\n" .
+					"The process was restarted and it will not halt at breakpoints.\n" .
+					'Use "--xdebug" if you want to halt at breakpoints.',
+				);
+			}
+		}
+
+		if ($memoryLimit !== null) {
+			if (Strings::match($memoryLimit, '#^-?\d+[kMG]?$#i') === null) {
+				$errorOutput->writeLineFormatted(sprintf('Invalid memory limit format "%s".', $memoryLimit));
+				throw new InceptionNotSuccessfulException();
+			}
+			if (ini_set('memory_limit', $memoryLimit) === false) {
+				$errorOutput->writeLineFormatted(sprintf('Memory limit "%s" cannot be set.', $memoryLimit));
+				throw new InceptionNotSuccessfulException();
+			}
+		}
+
+		self::$reservedMemory = str_repeat('PHPStan', 1463); // reserve 10 kB of space
+		register_shutdown_function(static function () use ($errorOutput): void {
+			self::$reservedMemory = null;
+			$error = error_get_last();
+			if ($error === null) {
+				return;
+			}
+			if ($error['type'] !== E_ERROR) {
+				return;
+			}
+
+			if (!str_contains($error['message'], 'Allowed memory size')) {
+				return;
+			}
+
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted(sprintf('<error>PHPStan process crashed because it reached configured PHP memory limit</error>: %s', ini_get('memory_limit')));
+			$errorOutput->writeLineFormatted('Increase your memory limit in php.ini or run PHPStan with --memory-limit CLI option.');
+		});
+
+		$currentWorkingDirectory = getcwd();
+		if ($currentWorkingDirectory === false) {
+			throw new ShouldNotHappenException();
+		}
+		$currentWorkingDirectoryFileHelper = new FileHelper($currentWorkingDirectory);
+		$currentWorkingDirectory = $currentWorkingDirectoryFileHelper->getWorkingDirectory();
+
+		/** @var list<callable(string): void>|false $autoloadFunctionsBefore */
+		$autoloadFunctionsBefore = spl_autoload_functions();
+
+		if ($autoloadFile !== null) {
+			$autoloadFile = $currentWorkingDirectoryFileHelper->absolutizePath($autoloadFile);
+			if (!is_file($autoloadFile)) {
+				$errorOutput->writeLineFormatted(sprintf('Autoload file "%s" not found.', $autoloadFile));
+				throw new InceptionNotSuccessfulException();
+			}
+
+			(static function (string $file): void {
+				require_once $file;
+			})($autoloadFile);
+		}
+		if ($projectConfigFile === null) {
+			$discoverableConfigNames = [
+				'.phpstan.neon',
+				'phpstan.neon',
+				'.phpstan.neon.dist',
+				'phpstan.neon.dist',
+				'.phpstan.dist.neon',
+				'phpstan.dist.neon',
+			];
+			foreach ($discoverableConfigNames as $discoverableConfigName) {
+				$discoverableConfigFile = $currentWorkingDirectory . DIRECTORY_SEPARATOR . $discoverableConfigName;
+				if (is_file($discoverableConfigFile)) {
+					$projectConfigFile = $discoverableConfigFile;
+					$errorOutput->writeLineFormatted(sprintf('Note: Using configuration file %s.', $projectConfigFile));
+					break;
+				}
+			}
+		} else {
+			$projectConfigFile = $currentWorkingDirectoryFileHelper->absolutizePath($projectConfigFile);
+		}
+
+		if ($generateBaselineFile !== null) {
+			$generateBaselineFile = $currentWorkingDirectoryFileHelper->normalizePath($currentWorkingDirectoryFileHelper->absolutizePath($generateBaselineFile));
+		}
+
+		$defaultLevelUsed = false;
+		if ($projectConfigFile === null && $level === null) {
+			$level = self::DEFAULT_LEVEL;
+			$defaultLevelUsed = true;
+		}
+
+		$paths = array_map(static fn (string $path): string => $currentWorkingDirectoryFileHelper->normalizePath($currentWorkingDirectoryFileHelper->absolutizePath($path)), $paths);
+
+		$analysedPathsFromConfig = [];
+		$containerFactory = new ContainerFactory($currentWorkingDirectory);
+		if ($cleanupContainerCache) {
+			$containerFactory->setJournalContainer();
+		}
+		$projectConfig = null;
+		if ($projectConfigFile !== null) {
+			if (!is_file($projectConfigFile)) {
+				$errorOutput->writeLineFormatted(sprintf('Project config file at path %s does not exist.', $projectConfigFile));
+				throw new InceptionNotSuccessfulException();
+			}
+
+			$loader = (new LoaderFactory(
+				$currentWorkingDirectoryFileHelper,
+				$containerFactory->getRootDirectory(),
+				$containerFactory->getCurrentWorkingDirectory(),
+				$generateBaselineFile,
+			))->createLoader();
+
+			try {
+				$projectConfig = $loader->load($projectConfigFile, null);
+			} catch (InvalidStateException | FileNotFoundException $e) {
+				$errorOutput->writeLineFormatted($e->getMessage());
+				throw new InceptionNotSuccessfulException();
+			}
+			$defaultParameters = [
+				'rootDir' => $containerFactory->getRootDirectory(),
+				'currentWorkingDirectory' => $containerFactory->getCurrentWorkingDirectory(),
+				'env' => getenv(),
+			];
+
+			if (isset($projectConfig['parameters']['tmpDir'])) {
+				$tmpDir = Helpers::expand($projectConfig['parameters']['tmpDir'], $defaultParameters);
+			}
+			if ($level === null && isset($projectConfig['parameters']['level'])) {
+				$level = (string) $projectConfig['parameters']['level'];
+			}
+			if (isset($projectConfig['parameters']['paths'])) {
+				$analysedPathsFromConfig = Helpers::expand($projectConfig['parameters']['paths'], $defaultParameters);
+			}
+			if (count($paths) === 0) {
+				$paths = $analysedPathsFromConfig;
+			}
+		}
+
+		$additionalConfigFiles = [];
+		if ($level !== null) {
+			$levelConfigFile = sprintf('%s/config.level%s.neon', $containerFactory->getConfigDirectory(), $level);
+			if (!is_file($levelConfigFile)) {
+				$errorOutput->writeLineFormatted(sprintf('Level config file %s was not found.', $levelConfigFile));
+				throw new InceptionNotSuccessfulException();
+			}
+
+			$additionalConfigFiles[] = $levelConfigFile;
+		}
+
+		if (class_exists('PHPStan\ExtensionInstaller\GeneratedConfig')) {
+			$generatedConfigReflection = new ReflectionClass('PHPStan\ExtensionInstaller\GeneratedConfig');
+			$generatedConfigDirectory = dirname($generatedConfigReflection->getFileName());
+			foreach (GeneratedConfig::EXTENSIONS as $name => $extensionConfig) {
+				foreach ($extensionConfig['extra']['includes'] ?? [] as $includedFile) {
+					if (!is_string($includedFile)) {
+						$errorOutput->writeLineFormatted(sprintf('Cannot include config from package %s, expecting string file path but got %s', $name, gettype($includedFile)));
+						throw new InceptionNotSuccessfulException();
+					}
+					$includedFilePath = null;
+					if (isset($extensionConfig['relative_install_path'])) {
+						$includedFilePath = sprintf('%s/%s/%s', $generatedConfigDirectory, $extensionConfig['relative_install_path'], $includedFile);
+						if (!is_file($includedFilePath) || !is_readable($includedFilePath)) {
+							$includedFilePath = null;
+						}
+					}
+
+					if ($includedFilePath === null) {
+						$includedFilePath = sprintf('%s/%s', $extensionConfig['install_path'], $includedFile);
+					}
+					if (!is_file($includedFilePath) || !is_readable($includedFilePath)) {
+						$errorOutput->writeLineFormatted(sprintf('Config file %s does not exist or isn\'t readable', $includedFilePath));
+						throw new InceptionNotSuccessfulException();
+					}
+					$additionalConfigFiles[] = $includedFilePath;
+				}
+			}
+
+			if (
+				count($additionalConfigFiles) > 0
+				&& $generatedConfigReflection->hasConstant('PHPSTAN_VERSION_CONSTRAINT')
+			) {
+				$generatedConfigPhpStanVersionConstraint = $generatedConfigReflection->getConstant('PHPSTAN_VERSION_CONSTRAINT');
+				if ($generatedConfigPhpStanVersionConstraint !== null) {
+					$phpstanSemverVersion = ComposerHelper::getPhpStanVersion();
+					if (
+						$phpstanSemverVersion !== ComposerHelper::UNKNOWN_VERSION
+						&& !str_contains($phpstanSemverVersion, '@')
+						&& !Semver::satisfies($phpstanSemverVersion, $generatedConfigPhpStanVersionConstraint)
+					) {
+						$errorOutput->writeLineFormatted('<error>Running PHPStan with incompatible extensions</error>');
+						$errorOutput->writeLineFormatted('You\'re running PHPStan from a different Composer project');
+						$errorOutput->writeLineFormatted('than the one where you installed extensions.');
+						$errorOutput->writeLineFormatted('');
+						$errorOutput->writeLineFormatted(sprintf('Your PHPStan version is: <fg=red>%s</>', $phpstanSemverVersion));
+						$errorOutput->writeLineFormatted(sprintf('Installed PHPStan extensions support: %s', $generatedConfigPhpStanVersionConstraint));
+
+						$errorOutput->writeLineFormatted('');
+						if (isset($_SERVER['argv'][0]) && is_file($_SERVER['argv'][0])) {
+							$mainScript = $_SERVER['argv'][0];
+							$errorOutput->writeLineFormatted(sprintf('PHPStan is running from: %s', $currentWorkingDirectoryFileHelper->absolutizePath(dirname($mainScript))));
+						}
+
+						$errorOutput->writeLineFormatted(sprintf('Extensions were installed in: %s', dirname($generatedConfigDirectory, 3)));
+						$errorOutput->writeLineFormatted('');
+
+						$simpleRelativePathHelper = new SimpleRelativePathHelper($currentWorkingDirectory);
+						$errorOutput->writeLineFormatted(sprintf('Run PHPStan with <fg=green>%s</> to fix this problem.', $simpleRelativePathHelper->getRelativePath(dirname($generatedConfigDirectory, 3) . '/bin/phpstan')));
+
+						$errorOutput->writeLineFormatted('');
+						throw new InceptionNotSuccessfulException();
+					}
+				}
+			}
+		}
+
+		if (
+			$projectConfigFile !== null
+			&& $currentWorkingDirectoryFileHelper->normalizePath($projectConfigFile, '/') !== $currentWorkingDirectoryFileHelper->normalizePath(__DIR__ . '/../../conf/config.stubFiles.neon', '/')
+		) {
+			$additionalConfigFiles[] = $projectConfigFile;
+		}
+
+		$createDir = static function (string $path) use ($errorOutput): void {
+			try {
+				DirectoryCreator::ensureDirectoryExists($path, 0777);
+			} catch (DirectoryCreatorException $e) {
+				$errorOutput->writeLineFormatted($e->getMessage());
+				throw new InceptionNotSuccessfulException();
+			}
+		};
+
+		if (!isset($tmpDir)) {
+			$tmpDir = sys_get_temp_dir() . '/phpstan';
+			$createDir($tmpDir);
+		}
+
+		try {
+			$container = $containerFactory->create($tmpDir, $additionalConfigFiles, $paths, $composerAutoloaderProjectPaths, $analysedPathsFromConfig, $level ?? self::DEFAULT_LEVEL, $generateBaselineFile, $autoloadFile);
+		} catch (InvalidConfigurationException | AssertionException $e) {
+			$errorOutput->writeLineFormatted('<error>Invalid configuration:</error>');
+			$errorOutput->writeLineFormatted($e->getMessage());
+			throw new InceptionNotSuccessfulException();
+		} catch (InvalidIgnoredErrorPatternsException $e) {
+			$errorOutput->writeLineFormatted(sprintf('<error>Invalid %s in ignoreErrors:</error>', count($e->getErrors()) === 1 ? 'entry' : 'entries'));
+			foreach ($e->getErrors() as $error) {
+				$errorOutput->writeLineFormatted($error);
+				$errorOutput->writeLineFormatted('');
+			}
+
+			$errorOutput->writeLineFormatted('To ignore non-existent paths in ignoreErrors,');
+			$errorOutput->writeLineFormatted('set <fg=cyan>reportUnmatchedIgnoredErrors: false</> in your configuration file.');
+			$errorOutput->writeLineFormatted('');
+
+			throw new InceptionNotSuccessfulException();
+		} catch (InvalidExcludePathsException $e) {
+			$errorOutput->writeLineFormatted(sprintf('<error>Invalid %s in excludePaths:</error>', count($e->getErrors()) === 1 ? 'entry' : 'entries'));
+			foreach ($e->getErrors() as $error) {
+				$errorOutput->writeLineFormatted($error);
+				$errorOutput->writeLineFormatted('');
+			}
+
+			$errorOutput->writeLineFormatted('If the excluded path can sometimes exist, append <fg=cyan>(?)</>');
+			$errorOutput->writeLineFormatted('to its config entry to mark it as optional.');
+			$errorOutput->writeLineFormatted('');
+
+			throw new InceptionNotSuccessfulException();
+		} catch (ValidationException $e) {
+			foreach ($e->getMessages() as $message) {
+				$errorOutput->writeLineFormatted('<error>Invalid configuration:</error>');
+				$errorOutput->writeLineFormatted($message);
+			}
+			throw new InceptionNotSuccessfulException();
+		} catch (ServiceCreationException $e) {
+			$matches = Strings::match($e->getMessage(), '#Service of type (?<serviceType>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\\\\]*[a-zA-Z0-9_\x7f-\xff]): Service of type (?<parserServiceType>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\\\\]*[a-zA-Z0-9_\x7f-\xff]) needed by \$(?<parameterName>[a-zA-Z_\x7f-\xff][a-zA-Z_0-9\x7f-\xff]*) in (?<methodName>[a-zA-Z_\x7f-\xff][a-zA-Z_0-9\x7f-\xff]*)\(\)#');
+			if ($matches === null) {
+				throw $e;
+			}
+
+			if ($matches['parserServiceType'] !== 'PHPStan\\Parser\\Parser') {
+				throw $e;
+			}
+
+			if ($matches['methodName'] !== '__construct') {
+				throw $e;
+			}
+
+			$errorOutput->writeLineFormatted('<error>Invalid configuration:</error>');
+			$errorOutput->writeLineFormatted(sprintf("Service of type <fg=cyan>%s</> is no longer autowired.\n", $matches['parserServiceType']));
+			$errorOutput->writeLineFormatted('You need to choose one of the following services');
+			$errorOutput->writeLineFormatted(sprintf('and use it in the %s argument of your service <fg=cyan>%s</>:', $matches['parameterName'], $matches['serviceType']));
+			$errorOutput->writeLineFormatted('* <fg=cyan>defaultAnalysisParser</> (if you\'re parsing files from analysed paths)');
+			$errorOutput->writeLineFormatted('* <fg=cyan>currentPhpVersionSimpleDirectParser</> (in most other situations)');
+
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted('After fixing this problem, your configuration will look something like this:');
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted('-');
+			$errorOutput->writeLineFormatted(sprintf("\tclass: %s", $matches['serviceType']));
+			$errorOutput->writeLineFormatted(sprintf("\targuments:"));
+			$errorOutput->writeLineFormatted(sprintf("\t\t%s: @defaultAnalysisParser", $matches['parameterName']));
+			$errorOutput->writeLineFormatted('');
+
+			throw new InceptionNotSuccessfulException();
+		} catch (DuplicateIncludedFilesException $e) {
+			$format = "<error>These files are included multiple times:</error>\n- %s";
+			if (count($e->getFiles()) === 1) {
+				$format = "<error>This file is included multiple times:</error>\n- %s";
+			}
+			$errorOutput->writeLineFormatted(sprintf($format, implode("\n- ", $e->getFiles())));
+
+			if (class_exists('PHPStan\ExtensionInstaller\GeneratedConfig')) {
+				$errorOutput->writeLineFormatted('');
+				$errorOutput->writeLineFormatted('It can lead to unexpected results. If you\'re using phpstan/extension-installer, make sure you have removed corresponding neon files from your project config file.');
+			}
+
+			throw new InceptionNotSuccessfulException();
+		}
+
+		if ($cleanupContainerCache) {
+			$cacheStorage = $container->getService('cacheStorage');
+			if ($cacheStorage instanceof FileCacheStorage) {
+				$cacheStorage->clearUnusedFiles();
+			}
+		}
+
+		/** @var bool|null $customRulesetUsed */
+		$customRulesetUsed = $container->getParameter('customRulesetUsed');
+		if ($customRulesetUsed === null) {
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted('<comment>No rules detected</comment>');
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted('You have the following choices:');
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted('* while running the analyse option, use the <info>--level</info> option to adjust your rule level - the higher the stricter');
+			$errorOutput->writeLineFormatted('');
+			$errorOutput->writeLineFormatted(sprintf('* create your own <info>custom ruleset</info> by selecting which rules you want to check by copying the service definitions from the built-in config level files in <options=bold>%s</>.', $currentWorkingDirectoryFileHelper->normalizePath(__DIR__ . '/../../conf')));
+			$errorOutput->writeLineFormatted('  * in this case, don\'t forget to define parameter <options=bold>customRulesetUsed</> in your config file.');
+			$errorOutput->writeLineFormatted('');
+			throw new InceptionNotSuccessfulException();
+		} elseif ($customRulesetUsed) {
+			$defaultLevelUsed = false;
+		}
+
+		foreach ($container->getParameter('bootstrapFiles') as $bootstrapFileFromArray) {
+			self::executeBootstrapFile($bootstrapFileFromArray, $container, $errorOutput, $debugEnabled);
+		}
+
+		/** @var list<callable(string): void>|false $autoloadFunctionsAfter */
+		$autoloadFunctionsAfter = spl_autoload_functions();
+
+		if ($autoloadFunctionsBefore !== false && $autoloadFunctionsAfter !== false) {
+			$newAutoloadFunctions = $GLOBALS['__phpstanAutoloadFunctions'] ?? [];
+			foreach ($autoloadFunctionsAfter as $after) {
+				foreach ($autoloadFunctionsBefore as $before) {
+					if ($after === $before) {
+						continue 2;
+					}
+				}
+
+				$newAutoloadFunctions[] = $after;
+			}
+
+			$GLOBALS['__phpstanAutoloadFunctions'] = $newAutoloadFunctions;
+		}
+
+		if (PHP_VERSION_ID >= 80000) {
+			require_once __DIR__ . '/../../stubs/runtime/Enum/UnitEnum.php';
+			require_once __DIR__ . '/../../stubs/runtime/Enum/BackedEnum.php';
+			require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnum.php';
+			require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnumUnitCase.php';
+			require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnumBackedCase.php';
+		}
+
+		foreach ($container->getParameter('scanFiles') as $scannedFile) {
+			if (is_file($scannedFile)) {
+				continue;
+			}
+
+			$errorOutput->writeLineFormatted(sprintf('Scanned file %s does not exist.', $scannedFile));
+
+			throw new InceptionNotSuccessfulException();
+		}
+
+		foreach ($container->getParameter('scanDirectories') as $scannedDirectory) {
+			if (is_dir($scannedDirectory)) {
+				continue;
+			}
+
+			$errorOutput->writeLineFormatted(sprintf('Scanned directory %s does not exist.', $scannedDirectory));
+
+			throw new InceptionNotSuccessfulException();
+		}
+
+		$alreadyAddedStubFiles = [];
+		foreach ($container->getParameter('stubFiles') as $stubFile) {
+			if (array_key_exists($stubFile, $alreadyAddedStubFiles)) {
+				$errorOutput->writeLineFormatted(sprintf('Stub file %s is added multiple times.', $stubFile));
+
+				throw new InceptionNotSuccessfulException();
+			}
+
+			$alreadyAddedStubFiles[$stubFile] = true;
+
+			if (is_file($stubFile)) {
+				continue;
+			}
+
+			$errorOutput->writeLineFormatted(sprintf('Stub file %s does not exist.', $stubFile));
+
+			throw new InceptionNotSuccessfulException();
+		}
+
+		/** @var FileFinder $fileFinder */
+		$fileFinder = $container->getService('fileFinderAnalyse');
+
+		$pathRoutingParser = $container->getService('pathRoutingParser');
+
+		$stubFilesProvider = $container->getByType(StubFilesProvider::class);
+
+		$filesCallback = static function () use ($currentWorkingDirectoryFileHelper, $stubFilesProvider, $fileFinder, $pathRoutingParser, $paths, $errorOutput): array {
+			if (count($paths) === 0) {
+				$errorOutput->writeLineFormatted('At least one path must be specified to analyse.');
+				throw new InceptionNotSuccessfulException();
+			}
+			$fileFinderResult = $fileFinder->findFiles($paths);
+			$files = $fileFinderResult->getFiles();
+
+			$pathRoutingParser->setAnalysedFiles($files);
+
+			$stubFilesExcluder = new FileExcluder($currentWorkingDirectoryFileHelper, $stubFilesProvider->getProjectStubFiles());
+
+			$files = array_values(array_filter($files, static fn (string $file) => !$stubFilesExcluder->isExcludedFromAnalysing($file)));
+
+			return [$files, $fileFinderResult->isOnlyFiles()];
+		};
+
+		return new InceptionResult(
+			$filesCallback,
+			$stdOutput,
+			$errorOutput,
+			$container,
+			$defaultLevelUsed,
+			$projectConfigFile,
+			$projectConfig,
+			$generateBaselineFile,
+		);
+	}
+
+	/**
+	 * @throws InceptionNotSuccessfulException
+	 */
+	private static function executeBootstrapFile(
+		string $file,
+		Container $container,
+		Output $errorOutput,
+		bool $debugEnabled,
+	): void
+	{
+		if (!is_file($file)) {
+			$errorOutput->writeLineFormatted(sprintf('Bootstrap file %s does not exist.', $file));
+			throw new InceptionNotSuccessfulException();
+		}
+		try {
+			(static function (string $file) use ($container): void {
+				require_once $file;
+			})($file);
+		} catch (Throwable $e) {
+			$errorOutput->writeLineFormatted(sprintf('%s thrown in %s on line %d while loading bootstrap file %s: %s', get_class($e), $e->getFile(), $e->getLine(), $file, $e->getMessage()));
+
+			if ($debugEnabled) {
+				$errorOutput->writeLineFormatted($e->getTraceAsString());
+			}
+
+			throw new InceptionNotSuccessfulException();
+		}
+	}
+
+}
diff --git a/src/Command/DiagnoseCommand.php b/src/Command/DiagnoseCommand.php
new file mode 100644
index 00000000..a0ec341b
--- /dev/null
+++ b/src/Command/DiagnoseCommand.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use PHPStan\Diagnose\DiagnoseExtension;
+use PHPStan\Diagnose\PHPStanDiagnoseExtension;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use function is_string;
+
+final class DiagnoseCommand extends Command
+{
+
+	private const NAME = 'diagnose';
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('Shows diagnose information about PHPStan and extensions')
+			->setDefinition([
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption(AnalyseCommand::OPTION_LEVEL, 'l', InputOption::VALUE_REQUIRED, 'Level of rule options - the higher the stricter'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('debug', null, InputOption::VALUE_NONE, 'Show debug information - do not catch internal errors'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for clearing result cache'),
+			]);
+	}
+
+	protected function initialize(InputInterface $input, OutputInterface $output): void
+	{
+		if ((bool) $input->getOption('debug')) {
+			$application = $this->getApplication();
+			if ($application === null) {
+				throw new ShouldNotHappenException();
+			}
+			$application->setCatchExceptions(false);
+			return;
+		}
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$memoryLimit = $input->getOption('memory-limit');
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$level = $input->getOption(AnalyseCommand::OPTION_LEVEL);
+
+		if (
+			(!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($level) && $level !== null)
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				[],
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				null,
+				$level,
+				false,
+				false,
+				false,
+			);
+		} catch (InceptionNotSuccessfulException) {
+			return 1;
+		}
+
+		$container = $inceptionResult->getContainer();
+		$output = $inceptionResult->getStdOutput();
+
+		/** @var PHPStanDiagnoseExtension $phpstanDiagnoseExtension */
+		$phpstanDiagnoseExtension = $container->getService('phpstanDiagnoseExtension');
+
+		// not using tag for this extension to make sure it's always first
+		$phpstanDiagnoseExtension->print($output);
+
+		/** @var DiagnoseExtension $extension */
+		foreach ($container->getServicesByTag(DiagnoseExtension::EXTENSION_TAG) as $extension) {
+			$extension->print($output);
+		}
+
+		return 0;
+	}
+
+}
diff --git a/src/Command/DumpParametersCommand.php b/src/Command/DumpParametersCommand.php
new file mode 100644
index 00000000..ee2e2ca0
--- /dev/null
+++ b/src/Command/DumpParametersCommand.php
@@ -0,0 +1,113 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Nette\Neon\Neon;
+use Nette\Utils\Json;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use function is_string;
+
+final class DumpParametersCommand extends Command
+{
+
+	private const NAME = 'dump-parameters';
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('Dumps all parameters')
+			->setDefinition([
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption(AnalyseCommand::OPTION_LEVEL, 'l', InputOption::VALUE_REQUIRED, 'Level of rule options - the higher the stricter'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('debug', null, InputOption::VALUE_NONE, 'Show debug information - which file is analysed, do not catch internal errors'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for clearing result cache'),
+				new InputOption('json', null, InputOption::VALUE_NONE, 'Dump parameters as JSON instead of NEON'),
+			]);
+	}
+
+	protected function initialize(InputInterface $input, OutputInterface $output): void
+	{
+		if ((bool) $input->getOption('debug')) {
+			$application = $this->getApplication();
+			if ($application === null) {
+				throw new ShouldNotHappenException();
+			}
+			$application->setCatchExceptions(false);
+			return;
+		}
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$memoryLimit = $input->getOption('memory-limit');
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$level = $input->getOption(AnalyseCommand::OPTION_LEVEL);
+		$json = (bool) $input->getOption('json');
+
+		if (
+			(!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($level) && $level !== null)
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				[],
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				null,
+				$level,
+				false,
+				false,
+				false,
+			);
+		} catch (InceptionNotSuccessfulException) {
+			return 1;
+		}
+
+		$parameters = $inceptionResult->getContainer()->getParameters();
+
+		// always set to '.'
+		unset($parameters['analysedPaths']);
+		// irrelevant Nette parameters
+		unset($parameters['debugMode']);
+		unset($parameters['productionMode']);
+		unset($parameters['tempDir']);
+		unset($parameters['__validate']);
+
+		if ($json) {
+			$encoded = Json::encode($parameters, Json::PRETTY);
+		} else {
+			$encoded = Neon::encode($parameters, true);
+		}
+
+		$output->writeln($encoded);
+
+		return 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/BaselineNeonErrorFormatter.php b/src/Command/ErrorFormatter/BaselineNeonErrorFormatter.php
new file mode 100644
index 00000000..319cc22d
--- /dev/null
+++ b/src/Command/ErrorFormatter/BaselineNeonErrorFormatter.php
@@ -0,0 +1,128 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use Nette\DI\Helpers;
+use Nette\Neon\Neon;
+use Nette\Utils\Strings;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\ShouldNotHappenException;
+use function count;
+use function ksort;
+use function preg_quote;
+use function substr;
+use const SORT_STRING;
+
+final class BaselineNeonErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+		string $existingBaselineContent,
+	): int
+	{
+		if (!$analysisResult->hasErrors()) {
+			$output->writeRaw($this->getNeon([], $existingBaselineContent));
+			return 0;
+		}
+
+		$fileErrors = [];
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			if (!$fileSpecificError->canBeIgnored()) {
+				continue;
+			}
+			$fileErrors[$this->relativePathHelper->getRelativePath($fileSpecificError->getFilePath())][] = $fileSpecificError;
+		}
+		ksort($fileErrors, SORT_STRING);
+
+		$errorsToOutput = [];
+		foreach ($fileErrors as $file => $errors) {
+			$fileErrorsByMessage = [];
+			foreach ($errors as $error) {
+				$errorMessage = $error->getMessage();
+				$identifier = $error->getIdentifier();
+				if (!isset($fileErrorsByMessage[$errorMessage])) {
+					$fileErrorsByMessage[$errorMessage] = [
+						1,
+						$identifier !== null ? [$identifier => 1] : [],
+					];
+					continue;
+				}
+
+				$fileErrorsByMessage[$errorMessage][0]++;
+
+				if ($identifier === null) {
+					continue;
+				}
+
+				if (!isset($fileErrorsByMessage[$errorMessage][1][$identifier])) {
+					$fileErrorsByMessage[$errorMessage][1][$identifier] = 1;
+					continue;
+				}
+
+				$fileErrorsByMessage[$errorMessage][1][$identifier]++;
+			}
+			ksort($fileErrorsByMessage, SORT_STRING);
+
+			foreach ($fileErrorsByMessage as $message => [$totalCount, $identifiers]) {
+				ksort($identifiers, SORT_STRING);
+				if (count($identifiers) > 0) {
+					foreach ($identifiers as $identifier => $identifierCount) {
+						$errorsToOutput[] = [
+							'message' => Helpers::escape('#^' . preg_quote($message, '#') . '$#'),
+							'identifier' => $identifier,
+							'count' => $identifierCount,
+							'path' => Helpers::escape($file),
+						];
+					}
+				} else {
+					$errorsToOutput[] = [
+						'message' => Helpers::escape('#^' . preg_quote($message, '#') . '$#'),
+						'count' => $totalCount,
+						'path' => Helpers::escape($file),
+					];
+				}
+			}
+		}
+
+		$output->writeRaw($this->getNeon($errorsToOutput, $existingBaselineContent));
+
+		return 1;
+	}
+
+	/**
+	 * @param array<int, array{message: string, count: int, path: string}> $ignoreErrors
+	 */
+	private function getNeon(array $ignoreErrors, string $existingBaselineContent): string
+	{
+		$neon = Neon::encode([
+			'parameters' => [
+				'ignoreErrors' => $ignoreErrors,
+			],
+		], Neon::BLOCK);
+
+		if (substr($neon, -2) !== "\n\n") {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($existingBaselineContent === '') {
+			return substr($neon, 0, -1);
+		}
+
+		$existingBaselineContentEndOfFileNewlinesMatches = Strings::match($existingBaselineContent, "~(\n)+$~");
+		$existingBaselineContentEndOfFileNewlines = $existingBaselineContentEndOfFileNewlinesMatches !== null
+			? $existingBaselineContentEndOfFileNewlinesMatches[0]
+			: '';
+
+		return substr($neon, 0, -2) . $existingBaselineContentEndOfFileNewlines;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/BaselinePhpErrorFormatter.php b/src/Command/ErrorFormatter/BaselinePhpErrorFormatter.php
new file mode 100644
index 00000000..b178f38d
--- /dev/null
+++ b/src/Command/ErrorFormatter/BaselinePhpErrorFormatter.php
@@ -0,0 +1,111 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use Nette\DI\Helpers;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function count;
+use function ksort;
+use function preg_quote;
+use function sprintf;
+use function var_export;
+use const SORT_STRING;
+
+final class BaselinePhpErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int
+	{
+		if (!$analysisResult->hasErrors()) {
+			$php = '<?php declare(strict_types = 1);';
+			$php .= "\n\n";
+			$php .= 'return [];';
+			$php .= "\n";
+			$output->writeRaw($php);
+			return 0;
+		}
+
+		$fileErrors = [];
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			if (!$fileSpecificError->canBeIgnored()) {
+				continue;
+			}
+			$fileErrors['/' . $this->relativePathHelper->getRelativePath($fileSpecificError->getFilePath())][] = $fileSpecificError;
+		}
+		ksort($fileErrors, SORT_STRING);
+
+		$php = '<?php declare(strict_types = 1);';
+		$php .= "\n\n";
+		$php .= '$ignoreErrors = [];';
+		$php .= "\n";
+		foreach ($fileErrors as $file => $errors) {
+			$fileErrorsByMessage = [];
+			foreach ($errors as $error) {
+				$errorMessage = $error->getMessage();
+				$identifier = $error->getIdentifier();
+				if (!isset($fileErrorsByMessage[$errorMessage])) {
+					$fileErrorsByMessage[$errorMessage] = [
+						1,
+						$identifier !== null ? [$identifier => 1] : [],
+					];
+					continue;
+				}
+
+				$fileErrorsByMessage[$errorMessage][0]++;
+
+				if ($identifier === null) {
+					continue;
+				}
+
+				if (!isset($fileErrorsByMessage[$errorMessage][1][$identifier])) {
+					$fileErrorsByMessage[$errorMessage][1][$identifier] = 1;
+					continue;
+				}
+
+				$fileErrorsByMessage[$errorMessage][1][$identifier]++;
+			}
+			ksort($fileErrorsByMessage, SORT_STRING);
+
+			foreach ($fileErrorsByMessage as $message => [$totalCount, $identifiers]) {
+				ksort($identifiers, SORT_STRING);
+				if (count($identifiers) > 0) {
+					foreach ($identifiers as $identifier => $identifierCount) {
+						$php .= sprintf(
+							"\$ignoreErrors[] = [\n\t'message' => %s,\n\t'identifier' => %s,\n\t'count' => %d,\n\t'path' => __DIR__ . %s,\n];\n",
+							var_export(Helpers::escape('#^' . preg_quote($message, '#') . '$#'), true),
+							var_export(Helpers::escape($identifier), true),
+							var_export($identifierCount, true),
+							var_export(Helpers::escape($file), true),
+						);
+					}
+				} else {
+					$php .= sprintf(
+						"\$ignoreErrors[] = [\n\t'message' => %s,\n\t'count' => %d,\n\t'path' => __DIR__ . %s,\n];\n",
+						var_export(Helpers::escape('#^' . preg_quote($message, '#') . '$#'), true),
+						var_export($totalCount, true),
+						var_export(Helpers::escape($file), true),
+					);
+				}
+			}
+		}
+
+		$php .= "\n";
+		$php .= 'return [\'parameters\' => [\'ignoreErrors\' => $ignoreErrors]];';
+		$php .= "\n";
+
+		$output->writeRaw($php);
+
+		return 1;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/CheckstyleErrorFormatter.php b/src/Command/ErrorFormatter/CheckstyleErrorFormatter.php
new file mode 100644
index 00000000..a708bdce
--- /dev/null
+++ b/src/Command/ErrorFormatter/CheckstyleErrorFormatter.php
@@ -0,0 +1,122 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function count;
+use function htmlspecialchars;
+use function sprintf;
+use const ENT_COMPAT;
+use const ENT_XML1;
+
+final class CheckstyleErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int
+	{
+		$output->writeRaw('<?xml version="1.0" encoding="UTF-8"?>');
+		$output->writeLineFormatted('');
+		$output->writeRaw('<checkstyle>');
+		$output->writeLineFormatted('');
+
+		foreach ($this->groupByFile($analysisResult) as $relativeFilePath => $errors) {
+			$output->writeRaw(sprintf(
+				'<file name="%s">',
+				$this->escape($relativeFilePath),
+			));
+			$output->writeLineFormatted('');
+
+			foreach ($errors as $error) {
+				$output->writeRaw(sprintf(
+					'  <error line="%d" column="1" severity="error" message="%s"%s />',
+					$this->escape((string) $error->getLine()),
+					$this->escape($error->getMessage()),
+					$error->getIdentifier() !== null ? sprintf(' source="%s"', $this->escape($error->getIdentifier())) : '',
+				));
+				$output->writeLineFormatted('');
+			}
+			$output->writeRaw('</file>');
+			$output->writeLineFormatted('');
+		}
+
+		$notFileSpecificErrors = $analysisResult->getNotFileSpecificErrors();
+
+		if (count($notFileSpecificErrors) > 0) {
+			$output->writeRaw('<file>');
+			$output->writeLineFormatted('');
+
+			foreach ($notFileSpecificErrors as $error) {
+				$output->writeRaw(sprintf('  <error severity="error" message="%s" />', $this->escape($error)));
+				$output->writeLineFormatted('');
+			}
+
+			$output->writeRaw('</file>');
+			$output->writeLineFormatted('');
+		}
+
+		if ($analysisResult->hasWarnings()) {
+			$output->writeRaw('<file>');
+			$output->writeLineFormatted('');
+
+			foreach ($analysisResult->getWarnings() as $warning) {
+				$output->writeRaw(sprintf('  <error severity="warning" message="%s" />', $this->escape($warning)));
+				$output->writeLineFormatted('');
+			}
+
+			$output->writeRaw('</file>');
+			$output->writeLineFormatted('');
+		}
+
+		$output->writeRaw('</checkstyle>');
+		$output->writeLineFormatted('');
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+	/**
+	 * Escapes values for using in XML
+	 *
+	 */
+	private function escape(string $string): string
+	{
+		return htmlspecialchars($string, ENT_XML1 | ENT_COMPAT, 'UTF-8');
+	}
+
+	/**
+	 * Group errors by file
+	 *
+	 * @return array<string, array<Error>> Array that have as key the relative path of file
+	 * and as value an array with occurred errors.
+	 */
+	private function groupByFile(AnalysisResult $analysisResult): array
+	{
+		$files = [];
+
+		/** @var Error $fileSpecificError */
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$absolutePath = $fileSpecificError->getFilePath();
+			if ($fileSpecificError->getTraitFilePath() !== null) {
+				$absolutePath = $fileSpecificError->getTraitFilePath();
+			}
+			$relativeFilePath = $this->relativePathHelper->getRelativePath(
+				$absolutePath,
+			);
+
+			$files[$relativeFilePath][] = $fileSpecificError;
+		}
+
+		return $files;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/CiDetectedErrorFormatter.php b/src/Command/ErrorFormatter/CiDetectedErrorFormatter.php
new file mode 100644
index 00000000..8e167bc2
--- /dev/null
+++ b/src/Command/ErrorFormatter/CiDetectedErrorFormatter.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use OndraM\CiDetector\CiDetector;
+use OndraM\CiDetector\Exception\CiNotDetectedException;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+
+/**
+ * @api
+ */
+final class CiDetectedErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(
+		private GithubErrorFormatter $githubErrorFormatter,
+		private TeamcityErrorFormatter $teamcityErrorFormatter,
+	)
+	{
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		$ciDetector = new CiDetector();
+
+		try {
+			$ci = $ciDetector->detect();
+			if ($ci->getCiName() === CiDetector::CI_GITHUB_ACTIONS) {
+				return $this->githubErrorFormatter->formatErrors($analysisResult, $output);
+			} elseif ($ci->getCiName() === CiDetector::CI_TEAMCITY) {
+				return $this->teamcityErrorFormatter->formatErrors($analysisResult, $output);
+			}
+		} catch (CiNotDetectedException) {
+			// pass
+		}
+
+		if (!$analysisResult->hasErrors() && !$analysisResult->hasWarnings()) {
+			return 0;
+		}
+
+		return $analysisResult->getTotalErrorsCount() > 0 ? 1 : 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/ErrorFormatter.php b/src/Command/ErrorFormatter/ErrorFormatter.php
new file mode 100644
index 00000000..5046d52d
--- /dev/null
+++ b/src/Command/ErrorFormatter/ErrorFormatter.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+
+/**
+ * This is the interface custom error formatters implement. Register it in the configuration file
+ * like this:
+ *
+ * ```
+ * services:
+ * 	errorFormatter.myFormat:
+ *		class: App\PHPStan\AwesomeErrorFormatter
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/error-formatters
+ *
+ * @api
+ */
+interface ErrorFormatter
+{
+
+	/**
+	 * Formats the errors and outputs them to the console.
+	 *
+	 * @return int Error code.
+	 */
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int;
+
+}
diff --git a/src/Command/ErrorFormatter/GithubErrorFormatter.php b/src/Command/ErrorFormatter/GithubErrorFormatter.php
new file mode 100644
index 00000000..e6b9a7fe
--- /dev/null
+++ b/src/Command/ErrorFormatter/GithubErrorFormatter.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function array_walk;
+use function implode;
+use function sprintf;
+use function str_replace;
+
+/**
+ * Allow errors to be reported in pull-requests diff when run in a GitHub Action
+ * @see https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message
+ */
+final class GithubErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(
+		private RelativePathHelper $relativePathHelper,
+	)
+	{
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$metas = [
+				'file' => $this->relativePathHelper->getRelativePath($fileSpecificError->getFile()),
+				'line' => $fileSpecificError->getLine(),
+				'col' => 0,
+			];
+			array_walk($metas, static function (&$value, string $key): void {
+				$value = sprintf('%s=%s', $key, (string) $value);
+			});
+
+			$message = $fileSpecificError->getMessage();
+			// newlines need to be encoded
+			// see https://github.com/actions/starter-workflows/issues/68#issuecomment-581479448
+			$message = str_replace("\n", '%0A', $message);
+
+			$line = sprintf('::error %s::%s', implode(',', $metas), $message);
+
+			$output->writeRaw($line);
+			$output->writeLineFormatted('');
+		}
+
+		foreach ($analysisResult->getNotFileSpecificErrors() as $notFileSpecificError) {
+			// newlines need to be encoded
+			// see https://github.com/actions/starter-workflows/issues/68#issuecomment-581479448
+			$notFileSpecificError = str_replace("\n", '%0A', $notFileSpecificError);
+
+			$line = sprintf('::error ::%s', $notFileSpecificError);
+
+			$output->writeRaw($line);
+			$output->writeLineFormatted('');
+		}
+
+		foreach ($analysisResult->getWarnings() as $warning) {
+			// newlines need to be encoded
+			// see https://github.com/actions/starter-workflows/issues/68#issuecomment-581479448
+			$warning = str_replace("\n", '%0A', $warning);
+
+			$line = sprintf('::warning ::%s', $warning);
+
+			$output->writeRaw($line);
+			$output->writeLineFormatted('');
+		}
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/GitlabErrorFormatter.php b/src/Command/ErrorFormatter/GitlabErrorFormatter.php
new file mode 100644
index 00000000..52f08f23
--- /dev/null
+++ b/src/Command/ErrorFormatter/GitlabErrorFormatter.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use Nette\Utils\Json;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function hash;
+use function implode;
+
+/**
+ * @see https://docs.gitlab.com/ee/user/project/merge_requests/code_quality.html#implementing-a-custom-tool
+ */
+final class GitlabErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		$errorsArray = [];
+
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$error = [
+				'description' => $fileSpecificError->getMessage(),
+				'fingerprint' => hash(
+					'sha256',
+					implode(
+						[
+							$fileSpecificError->getFile(),
+							$fileSpecificError->getLine(),
+							$fileSpecificError->getMessage(),
+						],
+					),
+				),
+				'severity' => $fileSpecificError->canBeIgnored() ? 'major' : 'blocker',
+				'location' => [
+					'path' => $this->relativePathHelper->getRelativePath($fileSpecificError->getFile()),
+					'lines' => [
+						'begin' => $fileSpecificError->getLine() ?? 0,
+					],
+				],
+			];
+
+			$errorsArray[] = $error;
+		}
+
+		foreach ($analysisResult->getNotFileSpecificErrors() as $notFileSpecificError) {
+			$errorsArray[] = [
+				'description' => $notFileSpecificError,
+				'fingerprint' => hash('sha256', $notFileSpecificError),
+				'severity' => 'major',
+				'location' => [
+					'path' => '',
+					'lines' => [
+						'begin' => 0,
+					],
+				],
+			];
+		}
+
+		$json = Json::encode($errorsArray, Json::PRETTY);
+
+		$output->writeRaw($json);
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/JsonErrorFormatter.php b/src/Command/ErrorFormatter/JsonErrorFormatter.php
new file mode 100644
index 00000000..df54f9a6
--- /dev/null
+++ b/src/Command/ErrorFormatter/JsonErrorFormatter.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use Nette\Utils\Json;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use function array_key_exists;
+use function count;
+
+final class JsonErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(private bool $pretty)
+	{
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		$errorsArray = [
+			'totals' => [
+				'errors' => count($analysisResult->getNotFileSpecificErrors()),
+				'file_errors' => count($analysisResult->getFileSpecificErrors()),
+			],
+			'files' => [],
+			'errors' => [],
+		];
+
+		$tipFormatter = new OutputFormatter(false);
+
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$file = $fileSpecificError->getFile();
+			if (!array_key_exists($file, $errorsArray['files'])) {
+				$errorsArray['files'][$file] = [
+					'errors' => 0,
+					'messages' => [],
+				];
+			}
+			$errorsArray['files'][$file]['errors']++;
+
+			$message = [
+				'message' => $fileSpecificError->getMessage(),
+				'line' => $fileSpecificError->getLine(),
+				'ignorable' => $fileSpecificError->canBeIgnored(),
+			];
+
+			if ($fileSpecificError->getTip() !== null) {
+				$message['tip'] = $tipFormatter->format($fileSpecificError->getTip());
+			}
+
+			if ($fileSpecificError->getIdentifier() !== null) {
+				$message['identifier'] = $fileSpecificError->getIdentifier();
+			}
+
+			$errorsArray['files'][$file]['messages'][] = $message;
+		}
+
+		foreach ($analysisResult->getNotFileSpecificErrors() as $notFileSpecificError) {
+			$errorsArray['errors'][] = $notFileSpecificError;
+		}
+
+		$json = Json::encode($errorsArray, $this->pretty ? Json::PRETTY : 0);
+
+		$output->writeRaw($json);
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/JunitErrorFormatter.php b/src/Command/ErrorFormatter/JunitErrorFormatter.php
new file mode 100644
index 00000000..dac150b2
--- /dev/null
+++ b/src/Command/ErrorFormatter/JunitErrorFormatter.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function htmlspecialchars;
+use function sprintf;
+use const ENT_COMPAT;
+use const ENT_XML1;
+
+final class JunitErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int
+	{
+		$totalFailuresCount = $analysisResult->getTotalErrorsCount();
+		$totalTestsCount = $analysisResult->hasErrors() ? $totalFailuresCount : 1;
+
+		$result = '<?xml version="1.0" encoding="UTF-8"?>';
+		$result .= sprintf(
+			'<testsuite failures="%d" name="phpstan" tests="%d" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/junit-team/junit5/r5.5.1/platform-tests/src/test/resources/jenkins-junit.xsd">',
+			$totalFailuresCount,
+			$totalTestsCount,
+		);
+
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$fileName = $this->relativePathHelper->getRelativePath($fileSpecificError->getFile());
+			$result .= $this->createTestCase(
+				sprintf('%s:%s', $fileName, (string) $fileSpecificError->getLine()),
+				'ERROR',
+				$fileSpecificError->getMessage(),
+			);
+		}
+
+		foreach ($analysisResult->getNotFileSpecificErrors() as $notFileSpecificError) {
+			$result .= $this->createTestCase('General error', 'ERROR', $notFileSpecificError);
+		}
+
+		foreach ($analysisResult->getWarnings() as $warning) {
+			$result .= $this->createTestCase('Warning', 'WARNING', $warning);
+		}
+
+		if (!$analysisResult->hasErrors()) {
+			$result .= $this->createTestCase('phpstan', '');
+		}
+
+		$result .= '</testsuite>';
+
+		$output->writeRaw($result);
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+	/**
+	 * Format a single test case
+	 *
+	 *
+	 */
+	private function createTestCase(string $reference, string $type, ?string $message = null): string
+	{
+		$result = sprintf('<testcase name="%s">', $this->escape($reference));
+
+		if ($message !== null) {
+			$result .= sprintf('<failure type="%s" message="%s" />', $this->escape($type), $this->escape($message));
+		}
+
+		$result .= '</testcase>';
+
+		return $result;
+	}
+
+	/**
+	 * Escapes values for using in XML
+	 *
+	 */
+	private function escape(string $string): string
+	{
+		return htmlspecialchars($string, ENT_XML1 | ENT_COMPAT, 'UTF-8');
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/RawErrorFormatter.php b/src/Command/ErrorFormatter/RawErrorFormatter.php
new file mode 100644
index 00000000..5771d699
--- /dev/null
+++ b/src/Command/ErrorFormatter/RawErrorFormatter.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use function sprintf;
+
+final class RawErrorFormatter implements ErrorFormatter
+{
+
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int
+	{
+		foreach ($analysisResult->getNotFileSpecificErrors() as $notFileSpecificError) {
+			$output->writeRaw(sprintf('?:?:%s', $notFileSpecificError));
+			$output->writeLineFormatted('');
+		}
+
+		$outputIdentifiers = $output->isVerbose();
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			$identifier = '';
+			if ($outputIdentifiers && $fileSpecificError->getIdentifier() !== null) {
+				$identifier = sprintf(' [identifier=%s]', $fileSpecificError->getIdentifier());
+			}
+
+			$output->writeRaw(
+				sprintf(
+					'%s:%d:%s%s',
+					$fileSpecificError->getFile(),
+					$fileSpecificError->getLine() ?? '?',
+					$fileSpecificError->getMessage(),
+					$identifier,
+				),
+			);
+			$output->writeLineFormatted('');
+		}
+
+		foreach ($analysisResult->getWarnings() as $warning) {
+			$output->writeRaw(sprintf('?:?:%s', $warning));
+			$output->writeLineFormatted('');
+		}
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/TableErrorFormatter.php b/src/Command/ErrorFormatter/TableErrorFormatter.php
new file mode 100644
index 00000000..a0e3c75a
--- /dev/null
+++ b/src/Command/ErrorFormatter/TableErrorFormatter.php
@@ -0,0 +1,167 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Command\AnalyseCommand;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\File\SimpleRelativePathHelper;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use function array_map;
+use function count;
+use function explode;
+use function getenv;
+use function is_string;
+use function ltrim;
+use function sprintf;
+use function str_contains;
+use function str_replace;
+
+final class TableErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(
+		private RelativePathHelper $relativePathHelper,
+		private SimpleRelativePathHelper $simpleRelativePathHelper,
+		private CiDetectedErrorFormatter $ciDetectedErrorFormatter,
+		private bool $showTipsOfTheDay,
+		private ?string $editorUrl,
+		private ?string $editorUrlTitle,
+	)
+	{
+	}
+
+	/** @api */
+	public function formatErrors(
+		AnalysisResult $analysisResult,
+		Output $output,
+	): int
+	{
+		$this->ciDetectedErrorFormatter->formatErrors($analysisResult, $output);
+		$projectConfigFile = 'phpstan.neon';
+		if ($analysisResult->getProjectConfigFile() !== null) {
+			$projectConfigFile = $this->relativePathHelper->getRelativePath($analysisResult->getProjectConfigFile());
+		}
+
+		$style = $output->getStyle();
+
+		if (!$analysisResult->hasErrors() && !$analysisResult->hasWarnings()) {
+			$style->success('No errors');
+
+			if ($this->showTipsOfTheDay) {
+				if ($analysisResult->isDefaultLevelUsed()) {
+					$output->writeLineFormatted('💡 Tip of the Day:');
+					$output->writeLineFormatted(sprintf(
+						"PHPStan is performing only the most basic checks.\nYou can pass a higher rule level through the <fg=cyan>--%s</> option\n(the default and current level is %d) to analyse code more thoroughly.",
+						AnalyseCommand::OPTION_LEVEL,
+						AnalyseCommand::DEFAULT_LEVEL,
+					));
+					$output->writeLineFormatted('');
+				}
+			}
+
+			return 0;
+		}
+
+		/** @var array<string, Error[]> $fileErrors */
+		$fileErrors = [];
+		foreach ($analysisResult->getFileSpecificErrors() as $fileSpecificError) {
+			if (!isset($fileErrors[$fileSpecificError->getFile()])) {
+				$fileErrors[$fileSpecificError->getFile()] = [];
+			}
+
+			$fileErrors[$fileSpecificError->getFile()][] = $fileSpecificError;
+		}
+
+		foreach ($fileErrors as $file => $errors) {
+			$rows = [];
+			foreach ($errors as $error) {
+				$message = $error->getMessage();
+				$filePath = $error->getTraitFilePath() ?? $error->getFilePath();
+				if ($error->getIdentifier() !== null && $error->canBeIgnored()) {
+					$message .= "\n";
+					$message .= '🪪  ' . $error->getIdentifier();
+				}
+				if ($error->getTip() !== null) {
+					$tip = $error->getTip();
+					$tip = str_replace('%configurationFile%', $projectConfigFile, $tip);
+
+					$message .= "\n";
+					if (str_contains($tip, "\n")) {
+						$lines = explode("\n", $tip);
+						foreach ($lines as $line) {
+							$message .= '💡 ' . ltrim($line, ' •') . "\n";
+						}
+					} else {
+						$message .= '💡 ' . $tip;
+					}
+				}
+				if (is_string($this->editorUrl)) {
+					$url = str_replace(
+						['%file%', '%relFile%', '%line%'],
+						[$filePath, $this->simpleRelativePathHelper->getRelativePath($filePath), (string) $error->getLine()],
+						$this->editorUrl,
+					);
+
+					if (is_string($this->editorUrlTitle)) {
+						$title = str_replace(
+							['%file%', '%relFile%', '%line%'],
+							[$filePath, $this->simpleRelativePathHelper->getRelativePath($filePath), (string) $error->getLine()],
+							$this->editorUrlTitle,
+						);
+					} else {
+						$title = $this->relativePathHelper->getRelativePath($filePath);
+					}
+
+					$message .= "\n✏️  <href=" . OutputFormatter::escape($url) . '>' . $title . '</>';
+				}
+				$rows[] = [
+					$this->formatLineNumber($error->getLine()),
+					$message,
+				];
+			}
+
+			$style->table(['Line', $this->relativePathHelper->getRelativePath($file)], $rows);
+		}
+
+		if (count($analysisResult->getNotFileSpecificErrors()) > 0) {
+			$style->table(['', 'Error'], array_map(static fn (string $error): array => ['', OutputFormatter::escape($error)], $analysisResult->getNotFileSpecificErrors()));
+		}
+
+		$warningsCount = count($analysisResult->getWarnings());
+		if ($warningsCount > 0) {
+			$style->table(['', 'Warning'], array_map(static fn (string $warning): array => ['', OutputFormatter::escape($warning)], $analysisResult->getWarnings()));
+		}
+
+		$finalMessage = sprintf($analysisResult->getTotalErrorsCount() === 1 ? 'Found %d error' : 'Found %d errors', $analysisResult->getTotalErrorsCount());
+		if ($warningsCount > 0) {
+			$finalMessage .= sprintf($warningsCount === 1 ? ' and %d warning' : ' and %d warnings', $warningsCount);
+		}
+
+		if ($analysisResult->getTotalErrorsCount() > 0) {
+			$style->error($finalMessage);
+		} else {
+			$style->warning($finalMessage);
+		}
+
+		return $analysisResult->getTotalErrorsCount() > 0 ? 1 : 0;
+	}
+
+	private function formatLineNumber(?int $lineNumber): string
+	{
+		if ($lineNumber === null) {
+			return '';
+		}
+
+		$isRunningInVSCodeTerminal = getenv('TERM_PROGRAM') === 'vscode';
+		if ($isRunningInVSCodeTerminal) {
+			return ':' . $lineNumber;
+		}
+
+		return (string) $lineNumber;
+	}
+
+}
diff --git a/src/Command/ErrorFormatter/TeamcityErrorFormatter.php b/src/Command/ErrorFormatter/TeamcityErrorFormatter.php
new file mode 100644
index 00000000..c7255c23
--- /dev/null
+++ b/src/Command/ErrorFormatter/TeamcityErrorFormatter.php
@@ -0,0 +1,117 @@
+<?php 
+
+namespace PHPStan\Command\ErrorFormatter;
+return;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+use PHPStan\File\RelativePathHelper;
+use function array_keys;
+use function array_values;
+use function count;
+use function is_string;
+use function preg_replace;
+use const PHP_EOL;
+
+/**
+ * @see https://www.jetbrains.com/help/teamcity/build-script-interaction-with-teamcity.html#Reporting+Inspections
+ */
+final class TeamcityErrorFormatter implements ErrorFormatter
+{
+
+	public function __construct(private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		$result = '';
+		$fileSpecificErrors = $analysisResult->getFileSpecificErrors();
+		$notFileSpecificErrors = $analysisResult->getNotFileSpecificErrors();
+		$warnings = $analysisResult->getWarnings();
+
+		if (count($fileSpecificErrors) === 0 && count($notFileSpecificErrors) === 0 && count($warnings) === 0) {
+			return 0;
+		}
+
+		$result .= $this->createTeamcityLine('inspectionType', [
+			'id' => 'phpstan',
+			'name' => 'phpstan',
+			'category' => 'phpstan',
+			'description' => 'phpstan Inspection',
+		]);
+
+		foreach ($fileSpecificErrors as $fileSpecificError) {
+			$result .= $this->createTeamcityLine('inspection', [
+				'typeId' => 'phpstan',
+				'message' => $fileSpecificError->getMessage(),
+				'file' => $this->relativePathHelper->getRelativePath($fileSpecificError->getFile()),
+				'line' => $fileSpecificError->getLine(),
+				// additional attributes
+				'SEVERITY' => 'ERROR',
+				'ignorable' => $fileSpecificError->canBeIgnored(),
+				'tip' => $fileSpecificError->getTip(),
+			]);
+		}
+
+		foreach ($notFileSpecificErrors as $notFileSpecificError) {
+			$result .= $this->createTeamcityLine('inspection', [
+				'typeId' => 'phpstan',
+				'message' => $notFileSpecificError,
+				// the file is required
+				'file' => $analysisResult->getProjectConfigFile() !== null ? $this->relativePathHelper->getRelativePath($analysisResult->getProjectConfigFile()) : '.',
+				'SEVERITY' => 'ERROR',
+			]);
+		}
+
+		foreach ($warnings as $warning) {
+			$result .= $this->createTeamcityLine('inspection', [
+				'typeId' => 'phpstan',
+				'message' => $warning,
+				// the file is required
+				'file' => $analysisResult->getProjectConfigFile() !== null ? $this->relativePathHelper->getRelativePath($analysisResult->getProjectConfigFile()) : '.',
+				'SEVERITY' => 'WARNING',
+			]);
+		}
+
+		$output->writeRaw($result);
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+
+	/**
+	 * Creates a Teamcity report line
+	 *
+	 * @param string $messageName The message name
+	 * @param mixed[] $keyValuePairs The key=>value pairs
+	 * @return string The Teamcity report line
+	 */
+	private function createTeamcityLine(string $messageName, array $keyValuePairs): string
+	{
+		$string = '##teamcity[' . $messageName;
+		foreach ($keyValuePairs as $key => $value) {
+			if (is_string($value)) {
+				$value = $this->escape($value);
+			}
+			$string .= ' ' . $key . '=\'' . $value . '\'';
+		}
+		return $string . ']' . PHP_EOL;
+	}
+
+	/**
+	 * Escapes the given string for Teamcity output
+	 *
+	 * @param string $string The string to escape
+	 * @return string The escaped string
+	 */
+	private function escape(string $string): string
+	{
+		$replacements = [
+			'~\n~' => '|n',
+			'~\r~' => '|r',
+			'~([\'\|\[\]])~' => '|$1',
+		];
+		return (string) preg_replace(array_keys($replacements), array_values($replacements), $string);
+	}
+
+}
diff --git a/src/Command/ErrorsConsoleStyle.php b/src/Command/ErrorsConsoleStyle.php
new file mode 100644
index 00000000..1e62257a
--- /dev/null
+++ b/src/Command/ErrorsConsoleStyle.php
@@ -0,0 +1,209 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use OndraM\CiDetector\CiDetector;
+use Symfony\Component\Console\Helper\ProgressBar;
+use Symfony\Component\Console\Helper\TableSeparator;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Console\Terminal;
+use function array_unshift;
+use function explode;
+use function implode;
+use function sprintf;
+use function str_starts_with;
+use function strlen;
+use function wordwrap;
+use const DIRECTORY_SEPARATOR;
+
+final class ErrorsConsoleStyle extends SymfonyStyle
+{
+
+	public const OPTION_NO_PROGRESS = 'no-progress';
+
+	private bool $showProgress;
+
+	private ProgressBar $progressBar;
+
+	private ?bool $isCiDetected = null;
+
+	public function __construct(InputInterface $input, OutputInterface $output)
+	{
+		parent::__construct($input, $output);
+		$this->showProgress = $input->hasOption(self::OPTION_NO_PROGRESS) && !(bool) $input->getOption(self::OPTION_NO_PROGRESS);
+	}
+
+	private function isCiDetected(): bool
+	{
+		if ($this->isCiDetected === null) {
+			$ciDetector = new CiDetector();
+			$this->isCiDetected = $ciDetector->isCiDetected();
+		}
+
+		return $this->isCiDetected;
+	}
+
+	/**
+	 * @param string[] $headers
+	 * @param string[][] $rows
+	 */
+	public function table(array $headers, array $rows): void
+	{
+		/** @var int $terminalWidth */
+		$terminalWidth = (new Terminal())->getWidth() - 2;
+		$maxHeaderWidth = strlen($headers[0]);
+		foreach ($rows as $row) {
+			$length = strlen($row[0]);
+			if ($maxHeaderWidth !== 0 && $length <= $maxHeaderWidth) {
+				continue;
+			}
+
+			$maxHeaderWidth = $length;
+		}
+
+		// manual wrapping could be replaced with $table->setColumnMaxWidth()
+		// but it's buggy for <href> lines
+		// https://github.com/symfony/symfony/issues/45520
+		// https://github.com/symfony/symfony/issues/45521
+		$headers = $this->wrap($headers, $terminalWidth, $maxHeaderWidth);
+		foreach ($headers as $i => $header) {
+			$newHeader = [];
+			foreach (explode("\n", $header) as $h) {
+				$newHeader[] = sprintf('<info>%s</info>', $h);
+			}
+
+			$headers[$i] = implode("\n", $newHeader);
+		}
+
+		foreach ($rows as $i => $row) {
+			$rows[$i] = $this->wrap($row, $terminalWidth, $maxHeaderWidth);
+		}
+
+		$table = $this->createTable();
+		array_unshift($rows, $headers, new TableSeparator());
+		$table->setRows($rows);
+
+		$table->render();
+		$this->newLine();
+	}
+
+	/**
+	 * @param string[] $rows
+	 * @return string[]
+	 */
+	private function wrap(array $rows, int $terminalWidth, int $maxHeaderWidth): array
+	{
+		foreach ($rows as $i => $column) {
+			$columnRows = explode("\n", $column);
+			foreach ($columnRows as $k => $columnRow) {
+				if (str_starts_with($columnRow, '✏️')) {
+					continue;
+				}
+				$wrapped = wordwrap(
+					$columnRow,
+					$terminalWidth - $maxHeaderWidth - 5,
+				);
+				if (str_starts_with($columnRow, '💡 ')) {
+					$wrappedLines = explode("\n", $wrapped);
+					$newWrappedLines = [];
+					foreach ($wrappedLines as $l => $line) {
+						if ($l === 0) {
+							$newWrappedLines[] = $line;
+							continue;
+						}
+
+						$newWrappedLines[] = '   ' . $line;
+					}
+					$columnRows[$k] = implode("\n", $newWrappedLines);
+				} else {
+					$columnRows[$k] = $wrapped;
+				}
+
+			}
+
+			$rows[$i] = implode("\n", $columnRows);
+		}
+
+		return $rows;
+	}
+
+	public function createProgressBar(int $max = 0): ProgressBar
+	{
+		$this->progressBar = parent::createProgressBar($max);
+
+		$format = $this->getProgressBarFormat();
+		if ($format !== null) {
+			$this->progressBar->setFormat($format);
+		}
+
+		$ci = $this->isCiDetected();
+		$this->progressBar->setOverwrite(!$ci);
+
+		if ($ci) {
+			$this->progressBar->minSecondsBetweenRedraws(15);
+			$this->progressBar->maxSecondsBetweenRedraws(30);
+		} elseif (DIRECTORY_SEPARATOR === '\\') {
+			$this->progressBar->minSecondsBetweenRedraws(0.5);
+			$this->progressBar->maxSecondsBetweenRedraws(2);
+		} else {
+			$this->progressBar->minSecondsBetweenRedraws(0.1);
+			$this->progressBar->maxSecondsBetweenRedraws(0.5);
+		}
+
+		return $this->progressBar;
+	}
+
+	private function getProgressBarFormat(): ?string
+	{
+		switch ($this->getVerbosity()) {
+			case OutputInterface::VERBOSITY_NORMAL:
+				$formatName = ProgressBar::FORMAT_NORMAL;
+				break;
+			case OutputInterface::VERBOSITY_VERBOSE:
+				$formatName = ProgressBar::FORMAT_VERBOSE;
+				break;
+			case OutputInterface::VERBOSITY_VERY_VERBOSE:
+			case OutputInterface::VERBOSITY_DEBUG:
+				$formatName = ProgressBar::FORMAT_VERY_VERBOSE;
+				break;
+			default:
+				$formatName = null;
+				break;
+		}
+
+		if ($formatName === null) {
+			return null;
+		}
+
+		return ProgressBar::getFormatDefinition($formatName);
+	}
+
+	public function progressStart(int $max = 0): void
+	{
+		if (!$this->showProgress) {
+			return;
+		}
+		parent::progressStart($max);
+	}
+
+	public function progressAdvance(int $step = 1): void
+	{
+		if (!$this->showProgress) {
+			return;
+		}
+
+		parent::progressAdvance($step);
+	}
+
+	public function progressFinish(): void
+	{
+		if (!$this->showProgress) {
+			return;
+		}
+		parent::progressFinish();
+	}
+
+}
diff --git a/src/Command/FixerApplication.php b/src/Command/FixerApplication.php
new file mode 100644
index 00000000..370c1366
--- /dev/null
+++ b/src/Command/FixerApplication.php
@@ -0,0 +1,589 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Clue\React\NDJson\Decoder;
+use Clue\React\NDJson\Encoder;
+use Composer\CaBundle\CaBundle;
+use DateTime;
+use DateTimeImmutable;
+use DateTimeZone;
+use Nette\Utils\Json;
+use Phar;
+use PHPStan\Analyser\Ignore\IgnoredErrorHelper;
+use PHPStan\Analyser\InternalError;
+use PHPStan\File\FileMonitor;
+use PHPStan\File\FileMonitorResult;
+use PHPStan\File\FileReader;
+use PHPStan\File\FileWriter;
+use PHPStan\Internal\ComposerHelper;
+use PHPStan\Internal\DirectoryCreator;
+use PHPStan\Internal\DirectoryCreatorException;
+use PHPStan\PhpDoc\StubFilesProvider;
+use PHPStan\Process\ProcessCanceledException;
+use PHPStan\Process\ProcessCrashedException;
+use PHPStan\Process\ProcessHelper;
+use PHPStan\Process\ProcessPromise;
+use PHPStan\ShouldNotHappenException;
+use Psr\Http\Message\ResponseInterface;
+use React\ChildProcess\Process;
+use React\Dns\Config\Config;
+use React\EventLoop\Loop;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\StreamSelectLoop;
+use React\Http\Browser;
+use React\Promise\PromiseInterface;
+use React\Socket\ConnectionInterface;
+use React\Socket\Connector;
+use React\Socket\TcpServer;
+use React\Stream\ReadableStreamInterface;
+use RuntimeException;
+use Symfony\Component\Console\Helper\ProgressBar;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Throwable;
+use function array_merge;
+use function count;
+use function defined;
+use function escapeshellarg;
+use function fclose;
+use function fopen;
+use function fwrite;
+use function get_class;
+use function getenv;
+use function http_build_query;
+use function ini_get;
+use function is_file;
+use function parse_url;
+use function React\Async\await;
+use function sprintf;
+use function strlen;
+use function unlink;
+use const JSON_INVALID_UTF8_IGNORE;
+use const PHP_BINARY;
+use const PHP_URL_PORT;
+use const PHP_VERSION_ID;
+
+final class FixerApplication
+{
+
+	/** @var PromiseInterface<string>|null  */
+	private PromiseInterface|null $processInProgress = null;
+
+	private bool $fileMonitorActive = true;
+
+	/**
+	 * @param string[] $analysedPaths
+	 * @param list<string> $dnsServers
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string[] $allConfigFiles
+	 * @param string[] $bootstrapFiles
+	 */
+	public function __construct(
+		private FileMonitor $fileMonitor,
+		private IgnoredErrorHelper $ignoredErrorHelper,
+		private StubFilesProvider $stubFilesProvider,
+		private array $analysedPaths,
+		private string $currentWorkingDirectory,
+		private string $proTmpDir,
+		private array $dnsServers,
+		private array $composerAutoloaderProjectPaths,
+		private array $allConfigFiles,
+		private ?string $cliAutoloadFile,
+		private array $bootstrapFiles,
+		private ?string $editorUrl,
+		private string $usedLevel,
+	)
+	{
+	}
+
+	public function run(
+		?string $projectConfigFile,
+		InputInterface $input,
+		OutputInterface $output,
+		int $filesCount,
+		string $mainScript,
+	): int
+	{
+		$loop = new StreamSelectLoop();
+		$server = new TcpServer('127.0.0.1:0', $loop);
+		/** @var string $serverAddress */
+		$serverAddress = $server->getAddress();
+
+		/** @var int<0, 65535> $serverPort */
+		$serverPort = parse_url($serverAddress, PHP_URL_PORT);
+
+		$server->on('connection', function (ConnectionInterface $connection) use ($loop, $projectConfigFile, $input, $output, $mainScript, $filesCount): void {
+			// phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
+			$jsonInvalidUtf8Ignore = defined('JSON_INVALID_UTF8_IGNORE') ? JSON_INVALID_UTF8_IGNORE : 0;
+			// phpcs:enable
+			$decoder = new Decoder($connection, true, 512, $jsonInvalidUtf8Ignore, 128 * 1024 * 1024);
+			$encoder = new Encoder($connection, $jsonInvalidUtf8Ignore);
+			$encoder->write(['action' => 'initialData', 'data' => [
+				'currentWorkingDirectory' => $this->currentWorkingDirectory,
+				'analysedPaths' => $this->analysedPaths,
+				'projectConfigFile' => $projectConfigFile,
+				'filesCount' => $filesCount,
+				'phpstanVersion' => ComposerHelper::getPhpStanVersion(),
+				'editorUrl' => $this->editorUrl,
+				'ruleLevel' => $this->usedLevel,
+			]]);
+			$decoder->on('data', function (array $data) use (
+				$output,
+			): void {
+				if ($data['action'] === 'webPort') {
+					$output->writeln(sprintf('Open your web browser at: <fg=cyan>http://127.0.0.1:%d</>', $data['data']['port']));
+					$output->writeln('Press [Ctrl-C] to quit.');
+					return;
+				}
+				if ($data['action'] === 'resumeFileMonitor') {
+					$this->fileMonitorActive = true;
+					return;
+				}
+				if ($data['action'] === 'pauseFileMonitor') {
+					$this->fileMonitorActive = false;
+					return;
+				}
+			});
+
+			$this->fileMonitor->initialize(array_merge(
+				$this->analysedPaths,
+				$this->getComposerLocks(),
+				$this->getComposerInstalled(),
+				$this->getExecutedFiles(),
+				$this->getStubFiles(),
+				$this->allConfigFiles,
+			));
+
+			$this->analyse(
+				$loop,
+				$mainScript,
+				$projectConfigFile,
+				$input,
+				$output,
+				$encoder,
+			);
+
+			$this->monitorFileChanges($loop, function (FileMonitorResult $changes) use ($loop, $mainScript, $projectConfigFile, $input, $encoder, $output): void {
+				if ($this->processInProgress !== null) {
+					$this->processInProgress->cancel();
+					$this->processInProgress = null;
+				}
+
+				if (count($changes->getChangedFiles()) > 0) {
+					$encoder->write(['action' => 'changedFiles', 'data' => [
+						'paths' => $changes->getChangedFiles(),
+					]]);
+				}
+
+				$this->analyse(
+					$loop,
+					$mainScript,
+					$projectConfigFile,
+					$input,
+					$output,
+					$encoder,
+				);
+			});
+		});
+
+		try {
+			$fixerProcess = $this->getFixerProcess($output, $serverPort);
+		} catch (FixerProcessException) {
+			return 1;
+		}
+
+		$fixerProcess->start($loop);
+		$fixerProcess->on('exit', function ($exitCode) use ($output, $loop): void {
+			$loop->stop();
+			if ($exitCode === null) {
+				return;
+			}
+			if ($exitCode === 0) {
+				return;
+			}
+			$output->writeln(sprintf('<fg=red>PHPStan Pro process exited with code %d.</>', $exitCode));
+			@unlink($this->proTmpDir . '/phar-info.json');
+		});
+
+		$loop->run();
+
+		return 0;
+	}
+
+	/**
+	 * @throws FixerProcessException
+	 */
+	private function getFixerProcess(OutputInterface $output, int $serverPort): Process
+	{
+		try {
+			DirectoryCreator::ensureDirectoryExists($this->proTmpDir, 0777);
+		} catch (DirectoryCreatorException $e) {
+			$output->writeln($e->getMessage());
+			throw new FixerProcessException();
+		}
+
+		$pharPath = $this->proTmpDir . '/phpstan-fixer.phar';
+		$infoPath = $this->proTmpDir . '/phar-info.json';
+
+		try {
+			$this->downloadPhar($output, $pharPath, $infoPath);
+		} catch (RuntimeException $e) {
+			if (!is_file($pharPath)) {
+				$this->printDownloadError($output, $e);
+
+				throw new FixerProcessException();
+			}
+		}
+
+		$pubKeyPath = $pharPath . '.pubkey';
+		FileWriter::write($pubKeyPath, FileReader::read(__DIR__ . '/fixer-phar.pubkey'));
+
+		try {
+			$phar = new Phar($pharPath);
+		} catch (Throwable $e) {
+			@unlink($pharPath);
+			@unlink($infoPath);
+			$output->writeln('<fg=red>PHPStan Pro PHAR signature is corrupted.</>');
+			$output->writeln(sprintf('%s: %s', get_class($e), $e->getMessage()));
+
+			throw new FixerProcessException();
+		}
+
+		if ($phar->getSignature()['hash_type'] !== 'OpenSSL') {
+			@unlink($pharPath);
+			@unlink($infoPath);
+			$output->writeln('<fg=red>PHPStan Pro PHAR signature is corrupted.</>');
+			$output->writeln(sprintf('Wrong hash type: %s', $phar->getSignature()['hash_type']));
+
+			throw new FixerProcessException();
+		}
+
+		$env = getenv();
+		$env['PHPSTAN_PRO_TMP_DIR'] = $this->proTmpDir;
+		$forcedPort = $_SERVER['PHPSTAN_PRO_WEB_PORT'] ?? null;
+		if ($forcedPort !== null) {
+			$env['PHPSTAN_PRO_WEB_PORT'] = $_SERVER['PHPSTAN_PRO_WEB_PORT'];
+			$isDocker = $this->isDockerRunning();
+			if ($isDocker) {
+				$output->writeln('Running in Docker? Don\'t forget to do these steps:');
+
+				$output->writeln('1) Publish this port when running Docker:');
+				$output->writeln(sprintf('   <fg=cyan>-p 127.0.0.1:%d:%d</>', $_SERVER['PHPSTAN_PRO_WEB_PORT'], $_SERVER['PHPSTAN_PRO_WEB_PORT']));
+				$output->writeln('2) Map the temp directory to a persistent volume');
+				$output->writeln('   so that you don\'t have to log in every time:');
+				$output->writeln(sprintf('   <fg=cyan>-v ~/.phpstan-pro:%s</>', $this->proTmpDir));
+				$output->writeln('');
+			}
+		} else {
+			$isDocker = $this->isDockerRunning();
+			if ($isDocker) {
+				$output->writeln('Running in Docker? You need to do these steps in order to launch PHPStan Pro:');
+				$output->writeln('');
+				$output->writeln('1) Set the PHPSTAN_PRO_WEB_PORT environment variable in the Dockerfile:');
+				$output->writeln('   <fg=cyan>ENV PHPSTAN_PRO_WEB_PORT=11111</>');
+				$output->writeln('2) Expose this port in the Dockerfile:');
+				$output->writeln('   <fg=cyan>EXPOSE 11111</>');
+				$output->writeln('3) Publish this port when running Docker:');
+				$output->writeln('   <fg=cyan>-p 127.0.0.1:11111:11111</>');
+				$output->writeln('4) Map the temp directory to a persistent volume');
+				$output->writeln('   so that you don\'t have to log in every time:');
+				$output->writeln(sprintf('   <fg=cyan>-v ~/phpstan-pro:%s</>', $this->proTmpDir));
+				$output->writeln('');
+			}
+		}
+
+		return new Process(sprintf('%s -d memory_limit=%s %s --port %d', escapeshellarg(PHP_BINARY), escapeshellarg(ini_get('memory_limit')), escapeshellarg($pharPath), $serverPort), null, $env, []);
+	}
+
+	private function downloadPhar(
+		OutputInterface $output,
+		string $pharPath,
+		string $infoPath,
+	): void
+	{
+		$currentVersion = null;
+		$branch = '2.0.x';
+		if (is_file($pharPath) && is_file($infoPath)) {
+			/** @var array{version: string, date: string, branch?: string} $currentInfo */
+			$currentInfo = Json::decode(FileReader::read($infoPath), Json::FORCE_ARRAY);
+			$currentVersion = $currentInfo['version'];
+			$currentBranch = $currentInfo['branch'] ?? 'master';
+			$currentDate = DateTime::createFromFormat(DateTime::ATOM, $currentInfo['date']);
+			if ($currentDate === false) {
+				throw new ShouldNotHappenException();
+			}
+			if (
+				$currentBranch === $branch
+				&& (new DateTimeImmutable('', new DateTimeZone('UTC'))) <= $currentDate->modify('+24 hours')
+			) {
+				return;
+			}
+
+			$output->writeln('<fg=green>Checking if there\'s a new PHPStan Pro release...</>');
+		}
+
+		$dnsConfig = new Config();
+		$dnsConfig->nameservers = $this->dnsServers;
+
+		$client = new Browser(
+			new Connector(
+				[
+					'timeout' => 5,
+					'tls' => [
+						'cafile' => CaBundle::getBundledCaBundlePath(),
+					],
+					'dns' => $dnsConfig,
+				],
+			),
+		);
+
+		/**
+		 * @var array{url: string, version: string} $latestInfo
+		 */
+		$latestInfo = Json::decode((string) await($client->get(sprintf('https://fixer-download-api.phpstan.com/latest?%s', http_build_query(['phpVersion' => PHP_VERSION_ID, 'branch' => $branch]))))->getBody(), Json::FORCE_ARRAY);
+		if ($currentVersion !== null && $latestInfo['version'] === $currentVersion) {
+			$this->writeInfoFile($infoPath, $latestInfo['version'], $branch);
+			$output->writeln('<fg=green>You\'re running the latest PHPStan Pro!</>');
+			return;
+		}
+
+		$output->writeln('<fg=green>Downloading the latest PHPStan Pro...</>');
+
+		$pharPathResource = fopen($pharPath, 'w');
+		if ($pharPathResource === false) {
+			throw new ShouldNotHappenException(sprintf('Could not open file %s for writing.', $pharPath));
+		}
+		$progressBar = new ProgressBar($output);
+		$client->requestStreaming('GET', $latestInfo['url'])->then(static function (ResponseInterface $response) use ($progressBar, $pharPathResource): void {
+			$body = $response->getBody();
+			if (!$body instanceof ReadableStreamInterface) {
+				throw new ShouldNotHappenException();
+			}
+
+			$totalSize = (int) $response->getHeaderLine('Content-Length');
+			$progressBar->setFormat('file_download');
+			$progressBar->setMessage(sprintf('%.2f MB', $totalSize / 1000000), 'fileSize');
+			$progressBar->start($totalSize);
+
+			$bytes = 0;
+			$body->on('data', static function ($chunk) use ($pharPathResource, $progressBar, &$bytes): void {
+				$bytes += strlen($chunk);
+				fwrite($pharPathResource, $chunk);
+				$progressBar->setProgress($bytes);
+			});
+		}, function (Throwable $e) use ($output): void {
+			$this->printDownloadError($output, $e);
+		});
+
+		Loop::run();
+
+		fclose($pharPathResource);
+
+		$progressBar->finish();
+		$output->writeln('');
+		$output->writeln('');
+
+		$this->writeInfoFile($infoPath, $latestInfo['version'], $branch);
+	}
+
+	private function printDownloadError(OutputInterface $output, Throwable $e): void
+	{
+		$output->writeln(sprintf('<fg=red>Could not download the PHPStan Pro executable:</> %s', $e->getMessage()));
+		$output->writeln('');
+		$output->writeln('Try different DNS servers in your configuration file:');
+		$output->writeln('');
+		$output->writeln('parameters:');
+		$output->writeln("\tpro:");
+		$output->writeln("\t\tdnsServers!:");
+		$output->writeln("\t\t\t- '8.8.8.8'");
+		$output->writeln('');
+	}
+
+	private function writeInfoFile(string $infoPath, string $version, string $branch): void
+	{
+		FileWriter::write($infoPath, Json::encode([
+			'version' => $version,
+			'branch' => $branch,
+			'date' => (new DateTimeImmutable('', new DateTimeZone('UTC')))->format(DateTime::ATOM),
+		]));
+	}
+
+	/**
+	 * @param callable(FileMonitorResult): void $hasChangesCallback
+	 */
+	private function monitorFileChanges(LoopInterface $loop, callable $hasChangesCallback): void
+	{
+		$callback = function () use (&$callback, $loop, $hasChangesCallback): void {
+			if (!$this->fileMonitorActive) {
+				$loop->addTimer(1.0, $callback);
+				return;
+			}
+			if ($this->processInProgress !== null) {
+				$loop->addTimer(1.0, $callback);
+				return;
+			}
+			$changes = $this->fileMonitor->getChanges();
+
+			if ($changes->hasAnyChanges()) {
+				$hasChangesCallback($changes);
+			}
+
+			$loop->addTimer(1.0, $callback);
+		};
+		$loop->addTimer(1.0, $callback);
+	}
+
+	private function analyse(
+		LoopInterface $loop,
+		string $mainScript,
+		?string $projectConfigFile,
+		InputInterface $input,
+		OutputInterface $output,
+		Encoder $phpstanFixerEncoder,
+	): void
+	{
+		$ignoredErrorHelperResult = $this->ignoredErrorHelper->initialize();
+		if (count($ignoredErrorHelperResult->getErrors()) > 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		// TCP server for fixer:worker (TCP client)
+		$server = new TcpServer('127.0.0.1:0', $loop);
+		/** @var string $serverAddress */
+		$serverAddress = $server->getAddress();
+		/** @var int<0, 65535> $serverPort */
+		$serverPort = parse_url($serverAddress, PHP_URL_PORT);
+
+		$server->on('connection', static function (ConnectionInterface $connection) use ($phpstanFixerEncoder): void {
+			// phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
+			$jsonInvalidUtf8Ignore = defined('JSON_INVALID_UTF8_IGNORE') ? JSON_INVALID_UTF8_IGNORE : 0;
+			// phpcs:enable
+			$decoder = new Decoder($connection, true, 512, $jsonInvalidUtf8Ignore, 128 * 1024 * 1024);
+			$decoder->on('data', static function (array $data) use ($phpstanFixerEncoder): void {
+				$phpstanFixerEncoder->write($data);
+			});
+		});
+
+		$process = new ProcessPromise($loop, 'changedFileAnalysis', ProcessHelper::getWorkerCommand(
+			$mainScript,
+			'fixer:worker',
+			$projectConfigFile,
+			[
+				'--server-port',
+				(string) $serverPort,
+			],
+			$input,
+		));
+		$this->processInProgress = $process->run();
+
+		$this->processInProgress->then(function () use ($server): void {
+			$this->processInProgress = null;
+			$server->close();
+		}, function (Throwable $e) use ($server, $phpstanFixerEncoder): void {
+			$this->processInProgress = null;
+			$server->close();
+
+			if ($e instanceof ProcessCanceledException) {
+				return;
+			}
+
+			if ($e instanceof ProcessCrashedException) {
+				$message = 'Analysis crashed';
+				$traceAsString = $e->getMessage();
+				$trace = [];
+			} else {
+				$message = $e->getMessage();
+				$traceAsString = $e->getTraceAsString();
+				$trace = InternalError::prepareTrace($e);
+			}
+			$phpstanFixerEncoder->write(['action' => 'analysisCrash', 'data' => [
+				'internalErrors' => [new InternalError(
+					$message,
+					'running PHPStan Pro worker',
+					$trace,
+					$traceAsString,
+					false,
+				)],
+			]]);
+		});
+	}
+
+	private function isDockerRunning(): bool
+	{
+		return is_file('/.dockerenv');
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	private function getComposerLocks(): array
+	{
+		$locks = [];
+		foreach ($this->composerAutoloaderProjectPaths as $autoloadPath) {
+			$lockPath = $autoloadPath . '/composer.lock';
+			if (!is_file($lockPath)) {
+				continue;
+			}
+
+			$locks[] = $lockPath;
+		}
+
+		return $locks;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	private function getComposerInstalled(): array
+	{
+		$files = [];
+		foreach ($this->composerAutoloaderProjectPaths as $autoloadPath) {
+			$composer = ComposerHelper::getComposerConfig($autoloadPath);
+			if ($composer === null) {
+				continue;
+			}
+
+			$filePath = ComposerHelper::getVendorDirFromComposerConfig($autoloadPath, $composer) . '/composer/installed.php';
+			if (!is_file($filePath)) {
+				continue;
+			}
+
+			$files[] = $filePath;
+		}
+
+		return $files;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	private function getExecutedFiles(): array
+	{
+		$files = [];
+		if ($this->cliAutoloadFile !== null) {
+			$files[] = $this->cliAutoloadFile;
+		}
+
+		foreach ($this->bootstrapFiles as $bootstrapFile) {
+			$files[] = $bootstrapFile;
+		}
+
+		return $files;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	private function getStubFiles(): array
+	{
+		$stubFiles = [];
+		foreach ($this->stubFilesProvider->getProjectStubFiles() as $stubFile) {
+			$stubFiles[] = $stubFile;
+		}
+
+		return $stubFiles;
+	}
+
+}
diff --git a/src/Command/FixerProcessException.php b/src/Command/FixerProcessException.php
new file mode 100644
index 00000000..04803069
--- /dev/null
+++ b/src/Command/FixerProcessException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Exception;
+
+final class FixerProcessException extends Exception
+{
+
+}
diff --git a/src/Command/FixerWorkerCommand.php b/src/Command/FixerWorkerCommand.php
new file mode 100644
index 00000000..8da2865e
--- /dev/null
+++ b/src/Command/FixerWorkerCommand.php
@@ -0,0 +1,415 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Clue\React\NDJson\Encoder;
+use PHPStan\Analyser\AnalyserResult;
+use PHPStan\Analyser\AnalyserResultFinalizer;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\Ignore\IgnoredErrorHelper;
+use PHPStan\Analyser\Ignore\IgnoredErrorHelperResult;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Analyser\ResultCache\ResultCacheManager;
+use PHPStan\Analyser\ResultCache\ResultCacheManagerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\File\PathNotFoundException;
+use PHPStan\Parallel\ParallelAnalyser;
+use PHPStan\Parallel\Scheduler;
+use PHPStan\Process\CpuCoreCounter;
+use PHPStan\ShouldNotHappenException;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\StreamSelectLoop;
+use React\Promise\PromiseInterface;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpConnector;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use function array_diff;
+use function array_key_exists;
+use function count;
+use function filemtime;
+use function in_array;
+use function is_array;
+use function is_bool;
+use function is_file;
+use function is_string;
+use function memory_get_peak_usage;
+use function React\Promise\resolve;
+use function sprintf;
+use function usort;
+use const JSON_INVALID_UTF8_IGNORE;
+
+final class FixerWorkerCommand extends Command
+{
+
+	private const NAME = 'fixer:worker';
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('(Internal) Support for PHPStan Pro.')
+			->setDefinition([
+				new InputArgument('paths', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Paths with source code to run analysis on'),
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption(AnalyseCommand::OPTION_LEVEL, 'l', InputOption::VALUE_REQUIRED, 'Level of rule options - the higher the stricter'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for analysis'),
+				new InputOption('xdebug', null, InputOption::VALUE_NONE, 'Allow running with Xdebug for debugging purposes'),
+				new InputOption('server-port', null, InputOption::VALUE_REQUIRED, 'Server port for FixerApplication'),
+			])
+			->setHidden(true);
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$paths = $input->getArgument('paths');
+		$memoryLimit = $input->getOption('memory-limit');
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$level = $input->getOption(AnalyseCommand::OPTION_LEVEL);
+		$allowXdebug = $input->getOption('xdebug');
+		$serverPort = $input->getOption('server-port');
+
+		if (
+			!is_array($paths)
+			|| (!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($level) && $level !== null)
+			|| (!is_bool($allowXdebug))
+			|| (!is_string($serverPort))
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				$paths,
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				null,
+				$level,
+				$allowXdebug,
+				false,
+				false,
+			);
+		} catch (InceptionNotSuccessfulException) {
+			return 1;
+		}
+
+		$container = $inceptionResult->getContainer();
+
+		/** @var IgnoredErrorHelper $ignoredErrorHelper */
+		$ignoredErrorHelper = $container->getByType(IgnoredErrorHelper::class);
+		$ignoredErrorHelperResult = $ignoredErrorHelper->initialize();
+		if (count($ignoredErrorHelperResult->getErrors()) > 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		$loop = new StreamSelectLoop();
+		$tcpConnector = new TcpConnector($loop);
+		$tcpConnector->connect(sprintf('127.0.0.1:%d', $serverPort))->then(function (ConnectionInterface $connection) use ($container, $inceptionResult, $configuration, $input, $ignoredErrorHelperResult, $loop): void {
+			// phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
+			$jsonInvalidUtf8Ignore = defined('JSON_INVALID_UTF8_IGNORE') ? JSON_INVALID_UTF8_IGNORE : 0;
+			// phpcs:enable
+			$out = new Encoder($connection, $jsonInvalidUtf8Ignore);
+			//$in = new Decoder($connection, true, 512, $jsonInvalidUtf8Ignore, 128 * 1024 * 1024);
+
+			/** @var ResultCacheManager $resultCacheManager */
+			$resultCacheManager = $container->getByType(ResultCacheManagerFactory::class)->create();
+			$projectConfigArray = $inceptionResult->getProjectConfigArray();
+
+			/** @var AnalyserResultFinalizer $analyserResultFinalizer */
+			$analyserResultFinalizer = $container->getByType(AnalyserResultFinalizer::class);
+
+			try {
+				[$inceptionFiles, $isOnlyFiles] = $inceptionResult->getFiles();
+			} catch (PathNotFoundException | InceptionNotSuccessfulException) {
+				throw new ShouldNotHappenException();
+			}
+
+			$out->write([
+				'action' => 'analysisStart',
+				'result' => [
+					'analysedFiles' => $inceptionFiles,
+				],
+			]);
+
+			$resultCache = $resultCacheManager->restore($inceptionFiles, false, false, $projectConfigArray, $inceptionResult->getErrorOutput());
+
+			$errorsFromResultCacheTmp = $resultCache->getErrors();
+			$locallyIgnoredErrorsFromResultCacheTmp = $resultCache->getLocallyIgnoredErrors();
+			foreach ($resultCache->getFilesToAnalyse() as $fileToAnalyse) {
+				unset($errorsFromResultCacheTmp[$fileToAnalyse]);
+				unset($locallyIgnoredErrorsFromResultCacheTmp[$fileToAnalyse]);
+			}
+
+			$errorsFromResultCache = [];
+			foreach ($errorsFromResultCacheTmp as $errorsByFile) {
+				foreach ($errorsByFile as $error) {
+					$errorsFromResultCache[] = $error;
+				}
+			}
+
+			[$errorsFromResultCache, $ignoredErrorsFromResultCache] = $this->filterErrors($errorsFromResultCache, $ignoredErrorHelperResult, $isOnlyFiles, $inceptionFiles, false);
+
+			foreach ($locallyIgnoredErrorsFromResultCacheTmp as $locallyIgnoredErrors) {
+				foreach ($locallyIgnoredErrors as $locallyIgnoredError) {
+					$ignoredErrorsFromResultCache[] = [$locallyIgnoredError, null];
+				}
+			}
+
+			$out->write([
+				'action' => 'analysisStream',
+				'result' => [
+					'errors' => $errorsFromResultCache,
+					'ignoredErrors' => $ignoredErrorsFromResultCache,
+					'analysedFiles' => array_diff($inceptionFiles, $resultCache->getFilesToAnalyse()),
+				],
+			]);
+
+			$filesToAnalyse = $resultCache->getFilesToAnalyse();
+			usort($filesToAnalyse, static function (string $a, string $b): int {
+				$aTime = @filemtime($a);
+				if ($aTime === false) {
+					return 1;
+				}
+
+				$bTime = @filemtime($b);
+				if ($bTime === false) {
+					return -1;
+				}
+
+				// files are sorted from the oldest
+				// because ParallelAnalyser reverses the scheduler jobs to do the smallest
+				// jobs first
+				return $aTime <=> $bTime;
+			});
+
+			$this->runAnalyser(
+				$loop,
+				$container,
+				$filesToAnalyse,
+				$configuration,
+				$input,
+				function (array $errors, array $locallyIgnoredErrors, array $analysedFiles) use ($out, $ignoredErrorHelperResult, $isOnlyFiles, $inceptionFiles): void {
+					$internalErrors = [];
+					foreach ($errors as $fileSpecificError) {
+						if (!$fileSpecificError->hasNonIgnorableException()) {
+							continue;
+						}
+
+						$internalErrors[] = $this->transformErrorIntoInternalError($fileSpecificError);
+					}
+
+					if (count($internalErrors) > 0) {
+						$out->write(['action' => 'analysisCrash', 'data' => [
+							'internalErrors' => $internalErrors,
+						]]);
+						return;
+					}
+
+					[$errors, $ignoredErrors] = $this->filterErrors($errors, $ignoredErrorHelperResult, $isOnlyFiles, $inceptionFiles, false);
+					foreach ($locallyIgnoredErrors as $locallyIgnoredError) {
+						$ignoredErrors[] = [$locallyIgnoredError, null];
+					}
+					$out->write([
+						'action' => 'analysisStream',
+						'result' => [
+							'errors' => $errors,
+							'ignoredErrors' => $ignoredErrors,
+							'analysedFiles' => $analysedFiles,
+						],
+					]);
+				},
+			)->then(function (AnalyserResult $intermediateAnalyserResult) use ($analyserResultFinalizer, $resultCacheManager, $resultCache, $inceptionResult, $isOnlyFiles, $ignoredErrorHelperResult, $inceptionFiles, $out): void {
+				$analyserResult = $resultCacheManager->process(
+					$intermediateAnalyserResult,
+					$resultCache,
+					$inceptionResult->getErrorOutput(),
+					false,
+					true,
+				)->getAnalyserResult();
+				$finalizerResult = $analyserResultFinalizer->finalize($analyserResult, $isOnlyFiles, false);
+
+				$internalErrors = [];
+				foreach ($finalizerResult->getAnalyserResult()->getInternalErrors() as $internalError) {
+					$internalErrors[] = new InternalError(
+						$internalError->getTraceAsString() !== null ? sprintf('Internal error: %s', $internalError->getMessage()) : $internalError->getMessage(),
+						$internalError->getContextDescription(),
+						$internalError->getTrace(),
+						$internalError->getTraceAsString(),
+						$internalError->shouldReportBug(),
+					);
+				}
+
+				foreach ($finalizerResult->getAnalyserResult()->getUnorderedErrors() as $fileSpecificError) {
+					if (!$fileSpecificError->hasNonIgnorableException()) {
+						continue;
+					}
+
+					$internalErrors[] = $this->transformErrorIntoInternalError($fileSpecificError);
+				}
+
+				$hasInternalErrors = count($internalErrors) > 0 || $finalizerResult->getAnalyserResult()->hasReachedInternalErrorsCountLimit();
+
+				if ($hasInternalErrors) {
+					$out->write(['action' => 'analysisCrash', 'data' => [
+						'internalErrors' => count($internalErrors) > 0 ? $internalErrors : [
+							new InternalError(
+								'Internal error occurred',
+								'running analyser in PHPStan Pro worker',
+								[],
+								null,
+								false,
+							),
+						],
+					]]);
+				}
+
+				[$collectorErrors, $ignoredCollectorErrors] = $this->filterErrors($finalizerResult->getCollectorErrors(), $ignoredErrorHelperResult, $isOnlyFiles, $inceptionFiles, $hasInternalErrors);
+				foreach ($finalizerResult->getLocallyIgnoredCollectorErrors() as $locallyIgnoredCollectorError) {
+					$ignoredCollectorErrors[] = [$locallyIgnoredCollectorError, null];
+				}
+				$out->write([
+					'action' => 'analysisStream',
+					'result' => [
+						'errors' => $collectorErrors,
+						'ignoredErrors' => $ignoredCollectorErrors,
+						'analysedFiles' => [],
+					],
+				]);
+
+				$ignoredErrorHelperProcessedResult = $ignoredErrorHelperResult->process(
+					$finalizerResult->getErrors(),
+					$isOnlyFiles,
+					$inceptionFiles,
+					$hasInternalErrors,
+				);
+				$ignoreFileErrors = [];
+				foreach ($ignoredErrorHelperProcessedResult->getNotIgnoredErrors() as $error) {
+					if ($error->getIdentifier() === null) {
+						continue;
+					}
+					if (!in_array($error->getIdentifier(), ['ignore.count', 'ignore.unmatched', 'ignore.unmatchedLine', 'ignore.unmatchedIdentifier'], true)) {
+						continue;
+					}
+					$ignoreFileErrors[] = $error;
+				}
+
+				$out->end([
+					'action' => 'analysisEnd',
+					'result' => [
+						'ignoreFileErrors' => $ignoreFileErrors,
+						'ignoreNotFileErrors' => $ignoredErrorHelperProcessedResult->getOtherIgnoreMessages(),
+					],
+				]);
+			});
+		});
+		$loop->run();
+
+		return 0;
+	}
+
+	private function transformErrorIntoInternalError(Error $error): InternalError
+	{
+		$message = $error->getMessage();
+		$metadata = $error->getMetadata();
+		if (
+			$error->getIdentifier() === 'phpstan.internal'
+			&& array_key_exists(InternalError::STACK_TRACE_AS_STRING_METADATA_KEY, $metadata)
+		) {
+			$message = sprintf('Internal error: %s', $message);
+		}
+
+		return new InternalError(
+			$message,
+			sprintf('analysing file %s', $error->getTraitFilePath() ?? $error->getFilePath()),
+			$metadata[InternalError::STACK_TRACE_METADATA_KEY] ?? [],
+			$metadata[InternalError::STACK_TRACE_AS_STRING_METADATA_KEY] ?? null,
+			true,
+		);
+	}
+
+	/**
+	 * @param string[] $inceptionFiles
+	 * @param array<Error> $errors
+	 * @return array{list<Error>, list<array{Error, mixed[]|string}>}
+	 */
+	private function filterErrors(array $errors, IgnoredErrorHelperResult $ignoredErrorHelperResult, bool $onlyFiles, array $inceptionFiles, bool $hasInternalErrors): array
+	{
+		$ignoredErrorHelperProcessedResult = $ignoredErrorHelperResult->process($errors, $onlyFiles, $inceptionFiles, $hasInternalErrors);
+		$finalErrors = [];
+		foreach ($ignoredErrorHelperProcessedResult->getNotIgnoredErrors() as $error) {
+			if ($error->getIdentifier() === null) {
+				$finalErrors[] = $error;
+				continue;
+			}
+			if (in_array($error->getIdentifier(), ['ignore.count', 'ignore.unmatched'], true)) {
+				continue;
+			}
+			$finalErrors[] = $error;
+		}
+
+		return [
+			$finalErrors,
+			$ignoredErrorHelperProcessedResult->getIgnoredErrors(),
+		];
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param callable(list<Error>, list<Error>, string[]): void $onFileAnalysisHandler
+	 * @return PromiseInterface<AnalyserResult>
+	 */
+	private function runAnalyser(LoopInterface $loop, Container $container, array $files, ?string $configuration, InputInterface $input, callable $onFileAnalysisHandler): PromiseInterface
+	{
+		/** @var ParallelAnalyser $parallelAnalyser */
+		$parallelAnalyser = $container->getByType(ParallelAnalyser::class);
+		$filesCount = count($files);
+		if ($filesCount === 0) {
+			return resolve(new AnalyserResult([], [], [], [], [], [], [], [], [], [], false, memory_get_peak_usage(true)));
+		}
+
+		/** @var Scheduler $scheduler */
+		$scheduler = $container->getByType(Scheduler::class);
+
+		/** @var CpuCoreCounter $cpuCoreCounter */
+		$cpuCoreCounter = $container->getByType(CpuCoreCounter::class);
+
+		$schedule = $scheduler->scheduleWork($cpuCoreCounter->getNumberOfCpuCores(), $files);
+		$mainScript = null;
+		if (isset($_SERVER['argv'][0]) && is_file($_SERVER['argv'][0])) {
+			$mainScript = $_SERVER['argv'][0];
+		}
+
+		return $parallelAnalyser->analyse(
+			$loop,
+			$schedule,
+			$mainScript,
+			null,
+			$configuration,
+			$input,
+			$onFileAnalysisHandler,
+		);
+	}
+
+}
diff --git a/src/Command/IgnoredRegexValidator.php b/src/Command/IgnoredRegexValidator.php
new file mode 100644
index 00000000..acb46065
--- /dev/null
+++ b/src/Command/IgnoredRegexValidator.php
@@ -0,0 +1,162 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Hoa\Compiler\Llk\Parser;
+use Hoa\Compiler\Llk\TreeNode;
+use Hoa\Exception\Exception;
+use Nette\Utils\Strings;
+use PHPStan\PhpDoc\TypeStringResolver;
+use PHPStan\PhpDocParser\Parser\ParserException;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function strrpos;
+use function substr;
+
+final class IgnoredRegexValidator
+{
+
+	public function __construct(
+		private Parser $parser,
+		private TypeStringResolver $typeStringResolver,
+	)
+	{
+	}
+
+	public function validate(string $regex): IgnoredRegexValidatorResult
+	{
+		$regex = $this->removeDelimiters($regex);
+
+		try {
+			/** @var TreeNode $ast */
+			$ast = $this->parser->parse($regex);
+		} catch (Exception) {
+			return new IgnoredRegexValidatorResult([], false, false);
+		}
+
+		if (Strings::match($regex, '~(?<!\\\\)(?:\\\\\\\\)*\|\|~')) {
+			return new IgnoredRegexValidatorResult([], false, true, '||', '\|\|');
+		}
+		if (Strings::match($regex, '~(?<!\\\\)(?:\\\\\\\\)*\(\)~')) {
+			return new IgnoredRegexValidatorResult([], false, true, '()', '\(\)');
+		}
+
+		return new IgnoredRegexValidatorResult(
+			$this->getIgnoredTypes($ast),
+			$this->hasAnchorsInTheMiddle($ast),
+			false,
+		);
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	private function getIgnoredTypes(TreeNode $ast): array
+	{
+		/** @var TreeNode|null $alternation */
+		$alternation = $ast->getChild(0);
+		if ($alternation === null) {
+			return [];
+		}
+
+		if ($alternation->getId() !== '#alternation') {
+			return [];
+		}
+
+		$types = [];
+		foreach ($alternation->getChildren() as $child) {
+			$text = $this->getText($child);
+			if ($text === null) {
+				continue;
+			}
+
+			$matches = Strings::match($text, '#^([a-zA-Z0-9]+)[,]?\s*#');
+			if ($matches === null) {
+				continue;
+			}
+
+			try {
+				$type = $this->typeStringResolver->resolve($matches[1], null);
+			} catch (ParserException) {
+				continue;
+			}
+
+			if ($type instanceof ObjectType) {
+				continue;
+			}
+
+			$typeDescription = $type->describe(VerbosityLevel::typeOnly());
+
+			if ($typeDescription !== $matches[1]) {
+				continue;
+			}
+
+			$types[$typeDescription] = $text;
+		}
+
+		return $types;
+	}
+
+	private function removeDelimiters(string $regex): string
+	{
+		$delimiter = substr($regex, 0, 1);
+		$endDelimiterPosition = strrpos($regex, $delimiter);
+		if ($endDelimiterPosition === false) {
+			throw new ShouldNotHappenException();
+		}
+
+		return substr($regex, 1, $endDelimiterPosition - 1);
+	}
+
+	private function getText(TreeNode $treeNode): ?string
+	{
+		if ($treeNode->getId() === 'token') {
+			return $treeNode->getValueValue();
+		}
+
+		if ($treeNode->getId() === '#concatenation') {
+			$fullText = '';
+			foreach ($treeNode->getChildren() as $child) {
+				$text = $this->getText($child);
+				if ($text === null) {
+					continue;
+				}
+
+				$fullText .= $text;
+			}
+
+			if ($fullText === '') {
+				return null;
+			}
+
+			return $fullText;
+		}
+
+		return null;
+	}
+
+	private function hasAnchorsInTheMiddle(TreeNode $ast): bool
+	{
+		if ($ast->getId() === 'token') {
+			$valueArray = $ast->getValue();
+
+			return $valueArray['token'] === 'anchor' && $valueArray['value'] === '$';
+		}
+		$childrenCount = count($ast->getChildren());
+		foreach ($ast->getChildren() as $i => $child) {
+			$has = $this->hasAnchorsInTheMiddle($child);
+			if (
+				$has
+				&& ($ast->getId() !== '#concatenation' || $i !== $childrenCount - 1)
+			) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+}
diff --git a/src/Command/IgnoredRegexValidatorResult.php b/src/Command/IgnoredRegexValidatorResult.php
new file mode 100644
index 00000000..bce762f7
--- /dev/null
+++ b/src/Command/IgnoredRegexValidatorResult.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+final class IgnoredRegexValidatorResult
+{
+
+	/**
+	 * @param array<string, string> $ignoredTypes
+	 */
+	public function __construct(
+		private array $ignoredTypes,
+		private bool $anchorsInTheMiddle,
+		private bool $allErrorsIgnored,
+		private ?string $wrongSequence = null,
+		private ?string $escapedWrongSequence = null,
+	)
+	{
+	}
+
+	/**
+	 * @return array<string, string>
+	 */
+	public function getIgnoredTypes(): array
+	{
+		return $this->ignoredTypes;
+	}
+
+	public function hasAnchorsInTheMiddle(): bool
+	{
+		return $this->anchorsInTheMiddle;
+	}
+
+	public function areAllErrorsIgnored(): bool
+	{
+		return $this->allErrorsIgnored;
+	}
+
+	public function getWrongSequence(): ?string
+	{
+		return $this->wrongSequence;
+	}
+
+	public function getEscapedWrongSequence(): ?string
+	{
+		return $this->escapedWrongSequence;
+	}
+
+}
diff --git a/src/Command/InceptionNotSuccessfulException.php b/src/Command/InceptionNotSuccessfulException.php
new file mode 100644
index 00000000..4868b12d
--- /dev/null
+++ b/src/Command/InceptionNotSuccessfulException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Exception;
+
+final class InceptionNotSuccessfulException extends Exception
+{
+
+}
diff --git a/src/Command/InceptionResult.php b/src/Command/InceptionResult.php
new file mode 100644
index 00000000..6aadec2f
--- /dev/null
+++ b/src/Command/InceptionResult.php
@@ -0,0 +1,128 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\File\PathNotFoundException;
+use PHPStan\Internal\BytesHelper;
+use function floor;
+use function implode;
+use function max;
+use function memory_get_peak_usage;
+use function microtime;
+use function round;
+use function sprintf;
+
+final class InceptionResult
+{
+
+	/** @var callable(): (array{string[], bool}) */
+	private $filesCallback;
+
+	/**
+	 * @param callable(): (array{string[], bool}) $filesCallback
+	 * @param mixed[]|null $projectConfigArray
+	 */
+	public function __construct(
+		callable $filesCallback,
+		private Output $stdOutput,
+		private Output $errorOutput,
+		private Container $container,
+		private bool $isDefaultLevelUsed,
+		private ?string $projectConfigFile,
+		private ?array $projectConfigArray,
+		private ?string $generateBaselineFile,
+	)
+	{
+		$this->filesCallback = $filesCallback;
+	}
+
+	/**
+	 * @throws InceptionNotSuccessfulException
+	 * @throws PathNotFoundException
+	 * @return array{string[], bool}
+	 */
+	public function getFiles(): array
+	{
+		$callback = $this->filesCallback;
+
+		/** @throws InceptionNotSuccessfulException|PathNotFoundException */
+		return $callback();
+	}
+
+	public function getStdOutput(): Output
+	{
+		return $this->stdOutput;
+	}
+
+	public function getErrorOutput(): Output
+	{
+		return $this->errorOutput;
+	}
+
+	public function getContainer(): Container
+	{
+		return $this->container;
+	}
+
+	public function isDefaultLevelUsed(): bool
+	{
+		return $this->isDefaultLevelUsed;
+	}
+
+	public function getProjectConfigFile(): ?string
+	{
+		return $this->projectConfigFile;
+	}
+
+	/**
+	 * @return mixed[]|null
+	 */
+	public function getProjectConfigArray(): ?array
+	{
+		return $this->projectConfigArray;
+	}
+
+	public function getGenerateBaselineFile(): ?string
+	{
+		return $this->generateBaselineFile;
+	}
+
+	public function handleReturn(int $exitCode, ?int $peakMemoryUsageBytes, float $analysisStartTime): int
+	{
+		if ($this->getErrorOutput()->isVerbose()) {
+			$this->getErrorOutput()->writeLineFormatted(sprintf(
+				'Elapsed time: %s',
+				$this->formatDuration((int) round(microtime(true) - $analysisStartTime)),
+			));
+		}
+
+		if ($peakMemoryUsageBytes !== null && $this->getErrorOutput()->isVerbose()) {
+			$this->getErrorOutput()->writeLineFormatted(sprintf(
+				'Used memory: %s',
+				BytesHelper::bytes(max(memory_get_peak_usage(true), $peakMemoryUsageBytes)),
+			));
+		}
+
+		return $exitCode;
+	}
+
+	private function formatDuration(int $seconds): string
+	{
+		$minutes = (int) floor($seconds / 60);
+		$remainingSeconds = $seconds % 60;
+
+		$result = [];
+		if ($minutes > 0) {
+			$result[] = $minutes . ' minute' . ($minutes > 1 ? 's' : '');
+		}
+
+		if ($remainingSeconds > 0) {
+			$result[] = $remainingSeconds . ' second' . ($remainingSeconds > 1 ? 's' : '');
+		}
+
+		return implode(' ', $result);
+	}
+
+}
diff --git a/src/Command/Output.php b/src/Command/Output.php
new file mode 100644
index 00000000..45be295b
--- /dev/null
+++ b/src/Command/Output.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+/** @api */
+interface Output
+{
+
+	public function writeFormatted(string $message): void;
+
+	public function writeLineFormatted(string $message): void;
+
+	public function writeRaw(string $message): void;
+
+	public function getStyle(): OutputStyle;
+
+	public function isVerbose(): bool;
+
+	public function isVeryVerbose(): bool;
+
+	public function isDebug(): bool;
+
+	public function isDecorated(): bool;
+
+}
diff --git a/src/Command/OutputStyle.php b/src/Command/OutputStyle.php
new file mode 100644
index 00000000..ef75d11f
--- /dev/null
+++ b/src/Command/OutputStyle.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+/** @api */
+interface OutputStyle
+{
+
+	public function title(string $message): void;
+
+	public function section(string $message): void;
+
+	/**
+	 * @param string[] $elements
+	 */
+	public function listing(array $elements): void;
+
+	public function success(string $message): void;
+
+	public function error(string $message): void;
+
+	public function warning(string $message): void;
+
+	public function note(string $message): void;
+
+	public function caution(string $message): void;
+
+	/**
+	 * @param mixed[] $headers
+	 * @param mixed[] $rows
+	 */
+	public function table(array $headers, array $rows): void;
+
+	public function newLine(int $count = 1): void;
+
+	public function progressStart(int $max = 0): void;
+
+	public function progressAdvance(int $step = 1): void;
+
+	public function progressFinish(): void;
+
+}
diff --git a/src/Command/Symfony/SymfonyOutput.php b/src/Command/Symfony/SymfonyOutput.php
new file mode 100644
index 00000000..f0d211e2
--- /dev/null
+++ b/src/Command/Symfony/SymfonyOutput.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Command\Symfony;
+return;
+
+use PHPStan\Command\Output;
+use PHPStan\Command\OutputStyle;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * @internal
+ */
+final class SymfonyOutput implements Output
+{
+
+	public function __construct(
+		private OutputInterface $symfonyOutput,
+		private OutputStyle $style,
+	)
+	{
+	}
+
+	public function writeFormatted(string $message): void
+	{
+		$this->symfonyOutput->write($message, false, OutputInterface::OUTPUT_NORMAL);
+	}
+
+	public function writeLineFormatted(string $message): void
+	{
+		$this->symfonyOutput->writeln($message, OutputInterface::OUTPUT_NORMAL);
+	}
+
+	public function writeRaw(string $message): void
+	{
+		$this->symfonyOutput->write($message, false, OutputInterface::OUTPUT_RAW);
+	}
+
+	public function getStyle(): OutputStyle
+	{
+		return $this->style;
+	}
+
+	public function isVerbose(): bool
+	{
+		return $this->symfonyOutput->isVerbose();
+	}
+
+	public function isVeryVerbose(): bool
+	{
+		return $this->symfonyOutput->isVeryVerbose();
+	}
+
+	public function isDebug(): bool
+	{
+		return $this->symfonyOutput->isDebug();
+	}
+
+	public function isDecorated(): bool
+	{
+		return $this->symfonyOutput->isDecorated();
+	}
+
+}
diff --git a/src/Command/Symfony/SymfonyStyle.php b/src/Command/Symfony/SymfonyStyle.php
new file mode 100644
index 00000000..18f56913
--- /dev/null
+++ b/src/Command/Symfony/SymfonyStyle.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Command\Symfony;
+return;
+
+use PHPStan\Command\OutputStyle;
+use Symfony\Component\Console\Style\StyleInterface;
+
+/**
+ * @internal
+ */
+final class SymfonyStyle implements OutputStyle
+{
+
+	public function __construct(private StyleInterface $symfonyStyle)
+	{
+	}
+
+	public function getSymfonyStyle(): StyleInterface
+	{
+		return $this->symfonyStyle;
+	}
+
+	public function title(string $message): void
+	{
+		$this->symfonyStyle->title($message);
+	}
+
+	public function section(string $message): void
+	{
+		$this->symfonyStyle->section($message);
+	}
+
+	public function listing(array $elements): void
+	{
+		$this->symfonyStyle->listing($elements);
+	}
+
+	public function success(string $message): void
+	{
+		$this->symfonyStyle->success($message);
+	}
+
+	public function error(string $message): void
+	{
+		$this->symfonyStyle->error($message);
+	}
+
+	public function warning(string $message): void
+	{
+		$this->symfonyStyle->warning($message);
+	}
+
+	public function note(string $message): void
+	{
+		$this->symfonyStyle->note($message);
+	}
+
+	public function caution(string $message): void
+	{
+		$this->symfonyStyle->caution($message);
+	}
+
+	public function table(array $headers, array $rows): void
+	{
+		$this->symfonyStyle->table($headers, $rows);
+	}
+
+	public function newLine(int $count = 1): void
+	{
+		$this->symfonyStyle->newLine($count);
+	}
+
+	public function progressStart(int $max = 0): void
+	{
+		$this->symfonyStyle->progressStart($max);
+	}
+
+	public function progressAdvance(int $step = 1): void
+	{
+		$this->symfonyStyle->progressAdvance($step);
+	}
+
+	public function progressFinish(): void
+	{
+		$this->symfonyStyle->progressFinish();
+	}
+
+}
diff --git a/src/Command/WorkerCommand.php b/src/Command/WorkerCommand.php
new file mode 100644
index 00000000..4d983c74
--- /dev/null
+++ b/src/Command/WorkerCommand.php
@@ -0,0 +1,266 @@
+<?php 
+
+namespace PHPStan\Command;
+return;
+
+use Clue\React\NDJson\Decoder;
+use Clue\React\NDJson\Encoder;
+use PHPStan\Analyser\FileAnalyser;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Collectors\Registry as CollectorRegistry;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\File\PathNotFoundException;
+use PHPStan\Rules\Registry as RuleRegistry;
+use PHPStan\ShouldNotHappenException;
+use React\EventLoop\StreamSelectLoop;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpConnector;
+use React\Stream\ReadableStreamInterface;
+use React\Stream\WritableStreamInterface;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Throwable;
+use function array_fill_keys;
+use function array_merge;
+use function defined;
+use function is_array;
+use function is_bool;
+use function is_string;
+use function memory_get_peak_usage;
+use function sprintf;
+
+final class WorkerCommand extends Command
+{
+
+	private const NAME = 'worker';
+
+	private int $errorCount = 0;
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+		parent::__construct();
+	}
+
+	protected function configure(): void
+	{
+		$this->setName(self::NAME)
+			->setDescription('(Internal) Support for parallel analysis.')
+			->setDefinition([
+				new InputArgument('paths', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Paths with source code to run analysis on'),
+				new InputOption('configuration', 'c', InputOption::VALUE_REQUIRED, 'Path to project configuration file'),
+				new InputOption(AnalyseCommand::OPTION_LEVEL, 'l', InputOption::VALUE_REQUIRED, 'Level of rule options - the higher the stricter'),
+				new InputOption('autoload-file', 'a', InputOption::VALUE_REQUIRED, 'Project\'s additional autoload file path'),
+				new InputOption('memory-limit', null, InputOption::VALUE_REQUIRED, 'Memory limit for analysis'),
+				new InputOption('xdebug', null, InputOption::VALUE_NONE, 'Allow running with Xdebug for debugging purposes'),
+				new InputOption('port', null, InputOption::VALUE_REQUIRED),
+				new InputOption('identifier', null, InputOption::VALUE_REQUIRED),
+			])
+			->setHidden(true);
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int
+	{
+		$paths = $input->getArgument('paths');
+		$memoryLimit = $input->getOption('memory-limit');
+		$autoloadFile = $input->getOption('autoload-file');
+		$configuration = $input->getOption('configuration');
+		$level = $input->getOption(AnalyseCommand::OPTION_LEVEL);
+		$allowXdebug = $input->getOption('xdebug');
+		$port = $input->getOption('port');
+		$identifier = $input->getOption('identifier');
+
+		if (
+			!is_array($paths)
+			|| (!is_string($memoryLimit) && $memoryLimit !== null)
+			|| (!is_string($autoloadFile) && $autoloadFile !== null)
+			|| (!is_string($configuration) && $configuration !== null)
+			|| (!is_string($level) && $level !== null)
+			|| (!is_bool($allowXdebug))
+			|| !is_string($port)
+			|| !is_string($identifier)
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		try {
+			$inceptionResult = CommandHelper::begin(
+				$input,
+				$output,
+				$paths,
+				$memoryLimit,
+				$autoloadFile,
+				$this->composerAutoloaderProjectPaths,
+				$configuration,
+				null,
+				$level,
+				$allowXdebug,
+				false,
+				false,
+			);
+		} catch (InceptionNotSuccessfulException $e) {
+			return 1;
+		}
+		$loop = new StreamSelectLoop();
+
+		$container = $inceptionResult->getContainer();
+
+		try {
+			[$analysedFiles] = $inceptionResult->getFiles();
+		} catch (PathNotFoundException $e) {
+			$inceptionResult->getErrorOutput()->writeLineFormatted(sprintf('<error>%s</error>', $e->getMessage()));
+			return 1;
+		} catch (InceptionNotSuccessfulException) {
+			return 1;
+		}
+
+		$nodeScopeResolver = $container->getByType(NodeScopeResolver::class);
+		$nodeScopeResolver->setAnalysedFiles($analysedFiles);
+
+		$analysedFiles = array_fill_keys($analysedFiles, true);
+
+		$tcpConnector = new TcpConnector($loop);
+		$tcpConnector->connect(sprintf('127.0.0.1:%d', $port))->then(function (ConnectionInterface $connection) use ($container, $identifier, $output, $analysedFiles): void {
+			// phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
+			$jsonInvalidUtf8Ignore = defined('JSON_INVALID_UTF8_IGNORE') ? JSON_INVALID_UTF8_IGNORE : 0;
+			// phpcs:enable
+			$out = new Encoder($connection, $jsonInvalidUtf8Ignore);
+			$in = new Decoder($connection, true, 512, $jsonInvalidUtf8Ignore, $container->getParameter('parallel')['buffer']);
+			$out->write(['action' => 'hello', 'identifier' => $identifier]);
+			$this->runWorker($container, $out, $in, $output, $analysedFiles);
+		});
+
+		$loop->run();
+
+		if ($this->errorCount > 0) {
+			return 1;
+		}
+
+		return 0;
+	}
+
+	/**
+	 * @param array<string, true> $analysedFiles
+	 */
+	private function runWorker(
+		Container $container,
+		WritableStreamInterface $out,
+		ReadableStreamInterface $in,
+		OutputInterface $output,
+		array $analysedFiles,
+	): void
+	{
+		$handleError = function (Throwable $error) use ($out, $output): void {
+			$this->errorCount++;
+			$output->writeln(sprintf('Error: %s', $error->getMessage()));
+			$out->write([
+				'action' => 'result',
+				'result' => [
+					'errors' => [],
+					'internalErrors' => [
+						new InternalError(
+							$error->getMessage(),
+							'communicating with main process in parallel worker',
+							InternalError::prepareTrace($error),
+							$error->getTraceAsString(),
+							true,
+						),
+					],
+					'filteredPhpErrors' => [],
+					'allPhpErrors' => [],
+					'locallyIgnoredErrors' => [],
+					'linesToIgnore' => [],
+					'unmatchedLineIgnores' => [],
+					'collectedData' => [],
+					'memoryUsage' => memory_get_peak_usage(true),
+					'dependencies' => [],
+					'exportedNodes' => [],
+					'files' => [],
+					'internalErrorsCount' => 1,
+				],
+			]);
+			$out->end();
+		};
+		$out->on('error', $handleError);
+		$fileAnalyser = $container->getByType(FileAnalyser::class);
+		$ruleRegistry = $container->getByType(RuleRegistry::class);
+		$collectorRegistry = $container->getByType(CollectorRegistry::class);
+		$in->on('data', static function (array $json) use ($fileAnalyser, $ruleRegistry, $collectorRegistry, $out, $analysedFiles): void {
+			$action = $json['action'];
+			if ($action !== 'analyse') {
+				return;
+			}
+
+			$internalErrorsCount = 0;
+			$files = $json['files'];
+			$errors = [];
+			$internalErrors = [];
+			$filteredPhpErrors = [];
+			$allPhpErrors = [];
+			$locallyIgnoredErrors = [];
+			$linesToIgnore = [];
+			$unmatchedLineIgnores = [];
+			$collectedData = [];
+			$dependencies = [];
+			$exportedNodes = [];
+			foreach ($files as $file) {
+				try {
+					$fileAnalyserResult = $fileAnalyser->analyseFile($file, $analysedFiles, $ruleRegistry, $collectorRegistry, null);
+					$fileErrors = $fileAnalyserResult->getErrors();
+					$filteredPhpErrors = array_merge($filteredPhpErrors, $fileAnalyserResult->getFilteredPhpErrors());
+					$allPhpErrors = array_merge($allPhpErrors, $fileAnalyserResult->getAllPhpErrors());
+					$linesToIgnore[$file] = $fileAnalyserResult->getLinesToIgnore();
+					$unmatchedLineIgnores[$file] = $fileAnalyserResult->getUnmatchedLineIgnores();
+					$dependencies[$file] = $fileAnalyserResult->getDependencies();
+					$exportedNodes[$file] = $fileAnalyserResult->getExportedNodes();
+					foreach ($fileErrors as $fileError) {
+						$errors[] = $fileError;
+					}
+					foreach ($fileAnalyserResult->getLocallyIgnoredErrors() as $locallyIgnoredError) {
+						$locallyIgnoredErrors[] = $locallyIgnoredError;
+					}
+					foreach ($fileAnalyserResult->getCollectedData() as $data) {
+						$collectedData[] = $data;
+					}
+				} catch (Throwable $t) {
+					$internalErrorsCount++;
+					$internalErrors[] = new InternalError(
+						$t->getMessage(),
+						sprintf('analysing file %s', $file),
+						InternalError::prepareTrace($t),
+						$t->getTraceAsString(),
+						true,
+					);
+				}
+			}
+
+			$out->write([
+				'action' => 'result',
+				'result' => [
+					'errors' => $errors,
+					'internalErrors' => $internalErrors,
+					'filteredPhpErrors' => $filteredPhpErrors,
+					'allPhpErrors' => $allPhpErrors,
+					'locallyIgnoredErrors' => $locallyIgnoredErrors,
+					'linesToIgnore' => $linesToIgnore,
+					'unmatchedLineIgnores' => $unmatchedLineIgnores,
+					'collectedData' => $collectedData,
+					'memoryUsage' => memory_get_peak_usage(true),
+					'dependencies' => $dependencies,
+					'exportedNodes' => $exportedNodes,
+					'files' => $files,
+					'internalErrorsCount' => $internalErrorsCount,
+				]]);
+		});
+		$in->on('error', $handleError);
+	}
+
+}
diff --git a/src/Dependency/DependencyResolver.php b/src/Dependency/DependencyResolver.php
new file mode 100644
index 00000000..93ab5c45
--- /dev/null
+++ b/src/Dependency/DependencyResolver.php
@@ -0,0 +1,681 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Foreach_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Broker\ClassNotFoundException;
+use PHPStan\Broker\FunctionNotFoundException;
+use PHPStan\File\FileHelper;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Type;
+use function array_merge;
+use function count;
+
+final class DependencyResolver
+{
+
+	public function __construct(
+		private FileHelper $fileHelper,
+		private ReflectionProvider $reflectionProvider,
+		private ExportedNodeResolver $exportedNodeResolver,
+		private FileTypeMapper $fileTypeMapper,
+	)
+	{
+	}
+
+	public function resolveDependencies(Node $node, Scope $scope): NodeDependencies
+	{
+		$dependenciesReflections = [];
+
+		if ($node instanceof Node\Stmt\Class_) {
+			if ($node->namespacedName !== null) {
+				$this->addClassToDependencies($node->namespacedName->toString(), $dependenciesReflections);
+			}
+			if ($node->extends !== null) {
+				$this->addClassToDependencies($node->extends->toString(), $dependenciesReflections);
+			}
+			foreach ($node->implements as $className) {
+				$this->addClassToDependencies($className->toString(), $dependenciesReflections);
+			}
+		} elseif ($node instanceof Node\Stmt\Interface_) {
+			if ($node->namespacedName !== null) {
+				$this->addClassToDependencies($node->namespacedName->toString(), $dependenciesReflections);
+			}
+			foreach ($node->extends as $className) {
+				$this->addClassToDependencies($className->toString(), $dependenciesReflections);
+			}
+		} elseif ($node instanceof Node\Stmt\Enum_) {
+			if ($node->namespacedName !== null) {
+				$this->addClassToDependencies($node->namespacedName->toString(), $dependenciesReflections);
+			}
+			foreach ($node->implements as $className) {
+				$this->addClassToDependencies($className->toString(), $dependenciesReflections);
+			}
+		} elseif ($node instanceof InClassMethodNode) {
+			$nativeMethod = $node->getMethodReflection();
+			$this->extractThrowType($nativeMethod->getThrowType(), $dependenciesReflections);
+			$this->extractFromParametersAcceptor($nativeMethod, $dependenciesReflections);
+			foreach ($nativeMethod->getAsserts()->getAll() as $assertTag) {
+				foreach ($assertTag->getType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+				foreach ($assertTag->getOriginalType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+			if ($nativeMethod->getSelfOutType() !== null) {
+				foreach ($nativeMethod->getSelfOutType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+		} elseif ($node instanceof ClassPropertyNode) {
+			$nativeType = $node->getNativeType();
+			if ($nativeType !== null) {
+				foreach ($nativeType->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+			$phpDocType = $node->getPhpDocType();
+			if ($phpDocType !== null) {
+				foreach ($phpDocType->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+		} elseif ($node instanceof InFunctionNode) {
+			$functionReflection = $node->getFunctionReflection();
+			$this->extractThrowType($functionReflection->getThrowType(), $dependenciesReflections);
+
+			$this->extractFromParametersAcceptor($functionReflection, $dependenciesReflections);
+			foreach ($functionReflection->getAsserts()->getAll() as $assertTag) {
+				foreach ($assertTag->getType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+				foreach ($assertTag->getOriginalType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+		} elseif ($node instanceof Closure || $node instanceof Node\Expr\ArrowFunction) {
+			$closureType = $scope->getType($node);
+			if ($closureType instanceof ClosureType) {
+				foreach ($closureType->getParameters() as $parameter) {
+					$referencedClasses = $parameter->getType()->getReferencedClasses();
+					foreach ($referencedClasses as $referencedClass) {
+						$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+					}
+				}
+
+				$returnTypeReferencedClasses = $closureType->getReturnType()->getReferencedClasses();
+				foreach ($returnTypeReferencedClasses as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+		} elseif ($node instanceof Node\Expr\FuncCall) {
+			$functionName = $node->name;
+			if ($functionName instanceof Node\Name) {
+				try {
+					$functionReflection = $this->getFunctionReflection($functionName, $scope);
+					$dependenciesReflections[] = $functionReflection;
+
+					foreach ($functionReflection->getVariants() as $functionVariant) {
+						foreach ($functionVariant->getParameters() as $parameter) {
+							if ($parameter->getOutType() !== null) {
+								foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+									$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+								}
+							}
+							if ($parameter->getClosureThisType() === null) {
+								continue;
+							}
+							foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+								$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+							}
+						}
+					}
+
+					foreach ($functionReflection->getAsserts()->getAll() as $assertTag) {
+						foreach ($assertTag->getType()->getReferencedClasses() as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+						foreach ($assertTag->getOriginalType()->getReferencedClasses() as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+					}
+				} catch (FunctionNotFoundException) {
+					// pass
+				}
+			} else {
+				$calledType = $scope->getType($functionName);
+				if ($calledType->isCallable()->yes()) {
+					$variants = $calledType->getCallableParametersAcceptors($scope);
+					foreach ($variants as $variant) {
+						$referencedClasses = $variant->getReturnType()->getReferencedClasses();
+						foreach ($referencedClasses as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+
+						foreach ($variant->getParameters() as $parameter) {
+							if (!$parameter instanceof ExtendedParameterReflection) {
+								continue;
+							}
+							if ($parameter->getOutType() !== null) {
+								foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+									$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+								}
+							}
+							if ($parameter->getClosureThisType() === null) {
+								continue;
+							}
+							foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+								$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+							}
+						}
+					}
+				}
+			}
+
+			$returnType = $scope->getType($node);
+			foreach ($returnType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+		} elseif ($node instanceof Node\Expr\MethodCall) {
+			$calledOnType = $scope->getType($node->var);
+			$classNames = $calledOnType->getReferencedClasses();
+			foreach ($classNames as $className) {
+				$this->addClassToDependencies($className, $dependenciesReflections);
+			}
+
+			$returnType = $scope->getType($node);
+			foreach ($returnType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($node->name instanceof Node\Identifier) {
+				$methodReflection = $scope->getMethodReflection($calledOnType, $node->name->toString());
+				if ($methodReflection !== null) {
+					$this->addClassToDependencies($methodReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+					foreach ($methodReflection->getVariants() as $methodVariant) {
+						foreach ($methodVariant->getParameters() as $parameter) {
+							if ($parameter->getOutType() !== null) {
+								foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+									$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+								}
+							}
+							if ($parameter->getClosureThisType() === null) {
+								continue;
+							}
+							foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+								$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+							}
+						}
+					}
+
+					foreach ($methodReflection->getAsserts()->getAll() as $assertTag) {
+						foreach ($assertTag->getType()->getReferencedClasses() as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+						foreach ($assertTag->getOriginalType()->getReferencedClasses() as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+					}
+
+					if ($methodReflection->getSelfOutType() !== null) {
+						foreach ($methodReflection->getSelfOutType()->getReferencedClasses() as $referencedClass) {
+							$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+						}
+					}
+				}
+			}
+		} elseif ($node instanceof Node\Expr\PropertyFetch) {
+			$fetchedOnType = $scope->getType($node->var);
+			$classNames = $fetchedOnType->getReferencedClasses();
+			foreach ($classNames as $className) {
+				$this->addClassToDependencies($className, $dependenciesReflections);
+			}
+
+			$propertyType = $scope->getType($node);
+			foreach ($propertyType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($node->name instanceof Node\Identifier) {
+				$propertyReflection = $scope->getPropertyReflection($fetchedOnType, $node->name->toString());
+				if ($propertyReflection !== null) {
+					$this->addClassToDependencies($propertyReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+				}
+			}
+		} elseif ($node instanceof Node\Expr\StaticCall) {
+			if ($node->class instanceof Node\Name) {
+				$this->addClassToDependencies($scope->resolveName($node->class), $dependenciesReflections);
+			} else {
+				foreach ($scope->getType($node->class)->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+
+			$returnType = $scope->getType($node);
+			foreach ($returnType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($node->name instanceof Node\Identifier) {
+				if ($node->class instanceof Node\Name) {
+					$className = $scope->resolveName($node->class);
+					if ($this->reflectionProvider->hasClass($className)) {
+						$methodClassReflection = $this->reflectionProvider->getClass($className);
+						if ($methodClassReflection->hasMethod($node->name->toString())) {
+							$methodReflection = $methodClassReflection->getMethod($node->name->toString(), $scope);
+							$this->addClassToDependencies($methodReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+							foreach ($methodReflection->getVariants() as $methodVariant) {
+								foreach ($methodVariant->getParameters() as $parameter) {
+									if ($parameter->getOutType() !== null) {
+										foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+											$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+										}
+									}
+									if ($parameter->getClosureThisType() === null) {
+										continue;
+									}
+									foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+										$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+									}
+								}
+							}
+						}
+					}
+				} else {
+					$methodReflection = $scope->getMethodReflection($scope->getType($node->class), $node->name->toString());
+					if ($methodReflection !== null) {
+						$this->addClassToDependencies($methodReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+						foreach ($methodReflection->getVariants() as $methodVariant) {
+							foreach ($methodVariant->getParameters() as $parameter) {
+								if ($parameter->getOutType() !== null) {
+									foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+										$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+									}
+								}
+								if ($parameter->getClosureThisType() === null) {
+									continue;
+								}
+								foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+									$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+								}
+							}
+						}
+					}
+				}
+			}
+		} elseif ($node instanceof Node\Expr\ClassConstFetch) {
+			if ($node->class instanceof Node\Name) {
+				$this->addClassToDependencies($scope->resolveName($node->class), $dependenciesReflections);
+			} else {
+				foreach ($scope->getType($node->class)->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+
+			$returnType = $scope->getType($node);
+			foreach ($returnType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($node->name instanceof Node\Identifier && $node->name->toLowerString() !== 'class') {
+				if ($node->class instanceof Node\Name) {
+					$className = $scope->resolveName($node->class);
+					if ($this->reflectionProvider->hasClass($className)) {
+						$constantClassReflection = $this->reflectionProvider->getClass($className);
+						if ($constantClassReflection->hasConstant($node->name->toString())) {
+							$constantReflection = $constantClassReflection->getConstant($node->name->toString());
+							$this->addClassToDependencies($constantReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+						}
+					}
+				} else {
+					$constantReflection = $scope->getConstantReflection($scope->getType($node->class), $node->name->toString());
+					if ($constantReflection !== null) {
+						$this->addClassToDependencies($constantReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+					}
+				}
+			}
+		} elseif ($node instanceof Node\Expr\StaticPropertyFetch) {
+			if ($node->class instanceof Node\Name) {
+				$this->addClassToDependencies($scope->resolveName($node->class), $dependenciesReflections);
+			} else {
+				foreach ($scope->getType($node->class)->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+
+			$returnType = $scope->getType($node);
+			foreach ($returnType->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($node->name instanceof Node\Identifier) {
+				if ($node->class instanceof Node\Name) {
+					$className = $scope->resolveName($node->class);
+					if ($this->reflectionProvider->hasClass($className)) {
+						$propertyClassReflection = $this->reflectionProvider->getClass($className);
+						if ($propertyClassReflection->hasProperty($node->name->toString())) {
+							$propertyReflection = $propertyClassReflection->getProperty($node->name->toString(), $scope);
+							$this->addClassToDependencies($propertyReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+						}
+					}
+				} else {
+					$propertyReflection = $scope->getPropertyReflection($scope->getType($node->class), $node->name->toString());
+					if ($propertyReflection !== null) {
+						$this->addClassToDependencies($propertyReflection->getDeclaringClass()->getName(), $dependenciesReflections);
+					}
+				}
+			}
+		} elseif (
+			$node instanceof Node\Expr\New_
+			&& $node->class instanceof Node\Name
+		) {
+			$this->addClassToDependencies($scope->resolveName($node->class), $dependenciesReflections);
+		} elseif ($node instanceof Node\Stmt\Trait_ && $node->namespacedName !== null) {
+			try {
+				$classReflection = $this->reflectionProvider->getClass($node->namespacedName->toString());
+
+				foreach ($classReflection->getRequireImplementsTags() as $implementsTag) {
+					foreach ($implementsTag->getType()->getReferencedClasses() as $referencedClass) {
+						if (!$this->reflectionProvider->hasClass($referencedClass)) {
+							continue;
+						}
+
+						$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+					}
+				}
+			} catch (ClassNotFoundException) {
+				// pass
+			}
+		} elseif ($node instanceof Node\Stmt\TraitUse) {
+			foreach ($node->traits as $traitName) {
+				$this->addClassToDependencies($traitName->toString(), $dependenciesReflections);
+			}
+
+			$docComment = $node->getDocComment();
+			if ($docComment !== null) {
+				$usesTags = $this->fileTypeMapper->getResolvedPhpDoc(
+					$scope->getFile(),
+					$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+					$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+					null,
+					$docComment->getText(),
+				)->getUsesTags();
+				foreach ($usesTags as $usesTag) {
+					foreach ($usesTag->getType()->getReferencedClasses() as $referencedClass) {
+						$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+					}
+				}
+			}
+		} elseif ($node instanceof Node\Expr\Instanceof_) {
+			if ($node->class instanceof Name) {
+				$this->addClassToDependencies($scope->resolveName($node->class), $dependenciesReflections);
+			}
+		} elseif ($node instanceof Node\Stmt\Catch_) {
+			foreach ($node->types as $type) {
+				$this->addClassToDependencies($scope->resolveName($type), $dependenciesReflections);
+			}
+		} elseif ($node instanceof ArrayDimFetch && $node->dim !== null) {
+			$varType = $scope->getType($node->var);
+			$dimType = $scope->getType($node->dim);
+
+			foreach ($varType->getOffsetValueType($dimType)->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+		} elseif ($node instanceof Foreach_) {
+			$exprType = $scope->getType($node->expr);
+			if ($node->keyVar !== null) {
+
+				foreach ($scope->getIterableKeyType($exprType)->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+
+			foreach ($scope->getIterableValueType($exprType)->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+		} elseif (
+			$node instanceof Array_
+			&& $this->considerArrayForCallableTest($scope, $node)
+		) {
+			$arrayType = $scope->getType($node);
+			if (!$arrayType->isCallable()->no()) {
+				foreach ($arrayType->getCallableParametersAcceptors($scope) as $variant) {
+					$referencedClasses = $variant->getReturnType()->getReferencedClasses();
+					foreach ($referencedClasses as $referencedClass) {
+						$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+					}
+				}
+			}
+		}
+
+		return new NodeDependencies($this->fileHelper, $dependenciesReflections, $this->exportedNodeResolver->resolve($scope->getFile(), $node));
+	}
+
+	private function considerArrayForCallableTest(Scope $scope, Array_ $arrayNode): bool
+	{
+		$items = $arrayNode->items;
+		if (count($items) !== 2) {
+			return false;
+		}
+
+		$itemType = $scope->getType($items[0]->value);
+		return $itemType->isClassString()->yes();
+	}
+
+	/**
+	 * @param array<int, ClassReflection|FunctionReflection> $dependenciesReflections
+	 */
+	private function addClassToDependencies(string $className, array &$dependenciesReflections): void
+	{
+		try {
+			$classReflection = $this->reflectionProvider->getClass($className);
+		} catch (ClassNotFoundException) {
+			return;
+		}
+
+		do {
+			$dependenciesReflections[] = $classReflection;
+
+			foreach ($classReflection->getInterfaces() as $interface) {
+				$dependenciesReflections[] = $interface;
+			}
+
+			foreach ($classReflection->getTraits() as $trait) {
+				$dependenciesReflections[] = $trait;
+			}
+
+			foreach ($classReflection->getResolvedMixinTypes() as $mixinType) {
+				foreach ($mixinType->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			foreach ($classReflection->getRequireExtendsTags() as $extendsTag) {
+				foreach ($extendsTag->getType()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			foreach ($classReflection->getTemplateTags() as $templateTag) {
+				foreach ($templateTag->getBound()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+
+				$default = $templateTag->getDefault();
+				if ($default === null) {
+					continue;
+				}
+				foreach ($default->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			foreach ($classReflection->getPropertyTags() as $propertyTag) {
+				if ($propertyTag->isReadable()) {
+					foreach ($propertyTag->getReadableType()->getReferencedClasses() as $referencedClass) {
+						if (!$this->reflectionProvider->hasClass($referencedClass)) {
+							continue;
+						}
+						$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+					}
+				}
+
+				if (!$propertyTag->isWritable()) {
+					continue;
+				}
+
+				foreach ($propertyTag->getWritableType()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			foreach ($classReflection->getMethodTags() as $methodTag) {
+				foreach ($methodTag->getReturnType()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+				foreach ($methodTag->getParameters() as $parameter) {
+					foreach ($parameter->getType()->getReferencedClasses() as $referencedClass) {
+						if (!$this->reflectionProvider->hasClass($referencedClass)) {
+							continue;
+						}
+						$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+					}
+					if ($parameter->getDefaultValue() === null) {
+						continue;
+					}
+					foreach ($parameter->getDefaultValue()->getReferencedClasses() as $referencedClass) {
+						if (!$this->reflectionProvider->hasClass($referencedClass)) {
+							continue;
+						}
+						$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+					}
+				}
+			}
+
+			foreach ($classReflection->getExtendsTags() as $extendsTag) {
+				foreach ($extendsTag->getType()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			foreach ($classReflection->getImplementsTags() as $implementsTag) {
+				foreach ($implementsTag->getType()->getReferencedClasses() as $referencedClass) {
+					if (!$this->reflectionProvider->hasClass($referencedClass)) {
+						continue;
+					}
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($referencedClass);
+				}
+			}
+
+			$phpDoc = $classReflection->getResolvedPhpDoc();
+			if ($phpDoc !== null) {
+				foreach ($phpDoc->getTypeAliasImportTags() as $importTag) {
+					$dependenciesReflections[] = $this->reflectionProvider->getClass($importTag->getImportedFrom());
+				}
+			}
+
+			$classReflection = $classReflection->getParentClass();
+		} while ($classReflection !== null);
+	}
+
+	private function getFunctionReflection(Node\Name $nameNode, ?Scope $scope): FunctionReflection
+	{
+		return $this->reflectionProvider->getFunction($nameNode, $scope);
+	}
+
+	/**
+	 * @param array<ClassReflection|FunctionReflection> $dependenciesReflections
+	 */
+	private function extractFromParametersAcceptor(
+		ExtendedParametersAcceptor $parametersAcceptor,
+		array &$dependenciesReflections,
+	): void
+	{
+		foreach ($parametersAcceptor->getParameters() as $parameter) {
+			$referencedClasses = array_merge(
+				$parameter->getNativeType()->getReferencedClasses(),
+				$parameter->getPhpDocType()->getReferencedClasses(),
+			);
+
+			foreach ($referencedClasses as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+
+			if ($parameter->getOutType() !== null) {
+				foreach ($parameter->getOutType()->getReferencedClasses() as $referencedClass) {
+					$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+				}
+			}
+			if ($parameter->getClosureThisType() === null) {
+				continue;
+			}
+			foreach ($parameter->getClosureThisType()->getReferencedClasses() as $referencedClass) {
+				$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+			}
+		}
+
+		$returnTypeReferencedClasses = array_merge(
+			$parametersAcceptor->getNativeReturnType()->getReferencedClasses(),
+			$parametersAcceptor->getPhpDocReturnType()->getReferencedClasses(),
+		);
+		foreach ($returnTypeReferencedClasses as $referencedClass) {
+			$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+		}
+	}
+
+	/**
+	 * @param array<ClassReflection|FunctionReflection> $dependenciesReflections
+	 */
+	private function extractThrowType(
+		?Type $throwType,
+		array &$dependenciesReflections,
+	): void
+	{
+		if ($throwType === null) {
+			return;
+		}
+
+		foreach ($throwType->getReferencedClasses() as $referencedClass) {
+			$this->addClassToDependencies($referencedClass, $dependenciesReflections);
+		}
+	}
+
+}
diff --git a/src/Dependency/ExportedNode.php b/src/Dependency/ExportedNode.php
new file mode 100644
index 00000000..94963461
--- /dev/null
+++ b/src/Dependency/ExportedNode.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+interface ExportedNode
+{
+
+	public function equals(self $node): bool;
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self;
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self;
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedAttributeNode.php b/src/Dependency/ExportedNode/ExportedAttributeNode.php
new file mode 100644
index 00000000..983eb6bf
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedAttributeNode.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use ReturnTypeWillChange;
+use function count;
+
+final class ExportedAttributeNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param array<int|string, string> $args argument name or index(string|int) => value expression (string)
+	 */
+	public function __construct(
+		private string $name,
+		private array $args,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->name !== $node->name) {
+			return false;
+		}
+
+		if (count($this->args) !== count($node->args)) {
+			return false;
+		}
+
+		foreach ($this->args as $argName => $argValue) {
+			if (!isset($node->args[$argName]) || $argValue !== $node->args[$argName]) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['args'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'args' => $this->args,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['args'],
+		);
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedClassConstantNode.php b/src/Dependency/ExportedNode/ExportedClassConstantNode.php
new file mode 100644
index 00000000..16c758c6
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedClassConstantNode.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedClassConstantNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private string $value,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->name === $node->name
+			&& $this->value === $node->value;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['value'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['value'],
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'value' => $this->value,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedClassConstantsNode.php b/src/Dependency/ExportedNode/ExportedClassConstantsNode.php
new file mode 100644
index 00000000..bab30db1
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedClassConstantsNode.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedClassConstantsNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param ExportedClassConstantNode[] $constants
+	 */
+	public function __construct(private array $constants, private bool $public, private bool $private, private bool $final, private ?ExportedPhpDocNode $phpDoc)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->constants) !== count($node->constants)) {
+			return false;
+		}
+
+		foreach ($this->constants as $i => $constant) {
+			if (!$constant->equals($node->constants[$i])) {
+				return false;
+			}
+		}
+
+		return $this->public === $node->public
+			&& $this->private === $node->private
+			&& $this->final === $node->final;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['constants'],
+			$properties['public'],
+			$properties['private'],
+			$properties['final'],
+			$properties['phpDoc'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			array_map(static function (array $constantData): ExportedClassConstantNode {
+				if ($constantData['type'] !== ExportedClassConstantNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedClassConstantNode::decode($constantData['data']);
+			}, $data['constants']),
+			$data['public'],
+			$data['private'],
+			$data['final'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'constants' => $this->constants,
+				'public' => $this->public,
+				'private' => $this->private,
+				'final' => $this->final,
+				'phpDoc' => $this->phpDoc,
+			],
+		];
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedClassNode.php b/src/Dependency/ExportedNode/ExportedClassNode.php
new file mode 100644
index 00000000..b67c0036
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedClassNode.php
@@ -0,0 +1,186 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\Dependency\RootExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedClassNode implements RootExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param string[] $implements
+	 * @param string[] $usedTraits
+	 * @param ExportedTraitUseAdaptation[] $traitUseAdaptations
+	 * @param ExportedNode[] $statements
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private ?ExportedPhpDocNode $phpDoc,
+		private bool $abstract,
+		private bool $final,
+		private ?string $extends,
+		private array $implements,
+		private array $usedTraits,
+		private array $traitUseAdaptations,
+		private array $statements,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		if (count($this->traitUseAdaptations) !== count($node->traitUseAdaptations)) {
+			return false;
+		}
+
+		foreach ($this->traitUseAdaptations as $i => $ourTraitUseAdaptation) {
+			$theirTraitUseAdaptation = $node->traitUseAdaptations[$i];
+			if (!$ourTraitUseAdaptation->equals($theirTraitUseAdaptation)) {
+				return false;
+			}
+		}
+
+		if (count($this->statements) !== count($node->statements)) {
+			return false;
+		}
+
+		foreach ($this->statements as $i => $statement) {
+			if ($statement->equals($node->statements[$i])) {
+				continue;
+			}
+
+			return false;
+		}
+
+		return $this->name === $node->name
+			&& $this->abstract === $node->abstract
+			&& $this->final === $node->final
+			&& $this->extends === $node->extends
+			&& $this->implements === $node->implements
+			&& $this->usedTraits === $node->usedTraits;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['phpDoc'],
+			$properties['abstract'],
+			$properties['final'],
+			$properties['extends'],
+			$properties['implements'],
+			$properties['usedTraits'],
+			$properties['traitUseAdaptations'],
+			$properties['statements'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'phpDoc' => $this->phpDoc,
+				'abstract' => $this->abstract,
+				'final' => $this->final,
+				'extends' => $this->extends,
+				'implements' => $this->implements,
+				'usedTraits' => $this->usedTraits,
+				'traitUseAdaptations' => $this->traitUseAdaptations,
+				'statements' => $this->statements,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['abstract'],
+			$data['final'],
+			$data['extends'],
+			$data['implements'],
+			$data['usedTraits'],
+			array_map(static function (array $traitUseAdaptationData): ExportedTraitUseAdaptation {
+				if ($traitUseAdaptationData['type'] !== ExportedTraitUseAdaptation::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedTraitUseAdaptation::decode($traitUseAdaptationData['data']);
+			}, $data['traitUseAdaptations']),
+			array_map(static function (array $node): ExportedNode {
+				$nodeType = $node['type'];
+
+				return $nodeType::decode($node['data']);
+			}, $data['statements']),
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+	/**
+	 * @return self::TYPE_CLASS
+	 */
+	public function getType(): string
+	{
+		return self::TYPE_CLASS;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedEnumCaseNode.php b/src/Dependency/ExportedNode/ExportedEnumCaseNode.php
new file mode 100644
index 00000000..73f9456b
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedEnumCaseNode.php
@@ -0,0 +1,79 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use ReturnTypeWillChange;
+
+final class ExportedEnumCaseNode implements ExportedNode, JsonSerializable
+{
+
+	public function __construct(private string $name, private ?string $value, private ?ExportedPhpDocNode $phpDoc)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		return $this->name === $node->name
+			&& $this->value === $node->value;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['value'],
+			$properties['phpDoc'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['value'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'value' => $this->value,
+				'phpDoc' => $this->phpDoc,
+			],
+		];
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedEnumNode.php b/src/Dependency/ExportedNode/ExportedEnumNode.php
new file mode 100644
index 00000000..fb951857
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedEnumNode.php
@@ -0,0 +1,149 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\Dependency\RootExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedEnumNode implements RootExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param string[] $implements
+	 * @param ExportedNode[] $statements
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private ?string $scalarType,
+		private ?ExportedPhpDocNode $phpDoc,
+		private array $implements,
+		private array $statements,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->statements) !== count($node->statements)) {
+			return false;
+		}
+
+		foreach ($this->statements as $i => $statement) {
+			if ($statement->equals($node->statements[$i])) {
+				continue;
+			}
+
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->name === $node->name
+			&& $this->scalarType === $node->scalarType
+			&& $this->implements === $node->implements;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['scalarType'],
+			$properties['phpDoc'],
+			$properties['implements'],
+			$properties['statements'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'scalarType' => $this->scalarType,
+				'phpDoc' => $this->phpDoc,
+				'implements' => $this->implements,
+				'statements' => $this->statements,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['scalarType'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['implements'],
+			array_map(static function (array $node): ExportedNode {
+				$nodeType = $node['type'];
+
+				return $nodeType::decode($node['data']);
+			}, $data['statements']),
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+	/**
+	 * @return self::TYPE_ENUM
+	 */
+	public function getType(): string
+	{
+		return self::TYPE_ENUM;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedFunctionNode.php b/src/Dependency/ExportedNode/ExportedFunctionNode.php
new file mode 100644
index 00000000..a4285f1f
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedFunctionNode.php
@@ -0,0 +1,148 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\Dependency\RootExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedFunctionNode implements RootExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param ExportedParameterNode[] $parameters
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private ?ExportedPhpDocNode $phpDoc,
+		private bool $byRef,
+		private ?string $returnType,
+		private array $parameters,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if (count($this->parameters) !== count($node->parameters)) {
+			return false;
+		}
+
+		foreach ($this->parameters as $i => $ourParameter) {
+			$theirParameter = $node->parameters[$i];
+			if (!$ourParameter->equals($theirParameter)) {
+				return false;
+			}
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->name === $node->name
+			&& $this->byRef === $node->byRef
+			&& $this->returnType === $node->returnType;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['phpDoc'],
+			$properties['byRef'],
+			$properties['returnType'],
+			$properties['parameters'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'phpDoc' => $this->phpDoc,
+				'byRef' => $this->byRef,
+				'returnType' => $this->returnType,
+				'parameters' => $this->parameters,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['byRef'],
+			$data['returnType'],
+			array_map(static function (array $parameterData): ExportedParameterNode {
+				if ($parameterData['type'] !== ExportedParameterNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedParameterNode::decode($parameterData['data']);
+			}, $data['parameters']),
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+	/**
+	 * @return self::TYPE_FUNCTION
+	 */
+	public function getType(): string
+	{
+		return self::TYPE_FUNCTION;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedInterfaceNode.php b/src/Dependency/ExportedNode/ExportedInterfaceNode.php
new file mode 100644
index 00000000..dde72934
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedInterfaceNode.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\Dependency\RootExportedNode;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedInterfaceNode implements RootExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param string[] $extends
+	 * @param ExportedNode[] $statements
+	 */
+	public function __construct(private string $name, private ?ExportedPhpDocNode $phpDoc, private array $extends, private array $statements)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->statements) !== count($node->statements)) {
+			return false;
+		}
+
+		foreach ($this->statements as $i => $statement) {
+			if ($statement->equals($node->statements[$i])) {
+				continue;
+			}
+
+			return false;
+		}
+
+		return $this->name === $node->name
+			&& $this->extends === $node->extends;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['phpDoc'],
+			$properties['extends'],
+			$properties['statements'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'phpDoc' => $this->phpDoc,
+				'extends' => $this->extends,
+				'statements' => $this->statements,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['extends'],
+			array_map(static function (array $node): ExportedNode {
+				$nodeType = $node['type'];
+
+				return $nodeType::decode($node['data']);
+			}, $data['statements']),
+		);
+	}
+
+	/**
+	 * @return self::TYPE_INTERFACE
+	 */
+	public function getType(): string
+	{
+		return self::TYPE_INTERFACE;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedMethodNode.php b/src/Dependency/ExportedNode/ExportedMethodNode.php
new file mode 100644
index 00000000..f7c44939
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedMethodNode.php
@@ -0,0 +1,159 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedMethodNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param ExportedParameterNode[] $parameters
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private ?ExportedPhpDocNode $phpDoc,
+		private bool $byRef,
+		private bool $public,
+		private bool $private,
+		private bool $abstract,
+		private bool $final,
+		private bool $static,
+		private ?string $returnType,
+		private array $parameters,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if (count($this->parameters) !== count($node->parameters)) {
+			return false;
+		}
+
+		foreach ($this->parameters as $i => $ourParameter) {
+			$theirParameter = $node->parameters[$i];
+			if (!$ourParameter->equals($theirParameter)) {
+				return false;
+			}
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->name === $node->name
+			&& $this->byRef === $node->byRef
+			&& $this->public === $node->public
+			&& $this->private === $node->private
+			&& $this->abstract === $node->abstract
+			&& $this->final === $node->final
+			&& $this->static === $node->static
+			&& $this->returnType === $node->returnType;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['phpDoc'],
+			$properties['byRef'],
+			$properties['public'],
+			$properties['private'],
+			$properties['abstract'],
+			$properties['final'],
+			$properties['static'],
+			$properties['returnType'],
+			$properties['parameters'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'phpDoc' => $this->phpDoc,
+				'byRef' => $this->byRef,
+				'public' => $this->public,
+				'private' => $this->private,
+				'abstract' => $this->abstract,
+				'final' => $this->final,
+				'static' => $this->static,
+				'returnType' => $this->returnType,
+				'parameters' => $this->parameters,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['byRef'],
+			$data['public'],
+			$data['private'],
+			$data['abstract'],
+			$data['final'],
+			$data['static'],
+			$data['returnType'],
+			array_map(static function (array $parameterData): ExportedParameterNode {
+				if ($parameterData['type'] !== ExportedParameterNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedParameterNode::decode($parameterData['data']);
+			}, $data['parameters']),
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedParameterNode.php b/src/Dependency/ExportedNode/ExportedParameterNode.php
new file mode 100644
index 00000000..eedc72c1
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedParameterNode.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedParameterNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private ?string $type,
+		private bool $byRef,
+		private bool $variadic,
+		private bool $hasDefault,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->name === $node->name
+			&& $this->type === $node->type
+			&& $this->byRef === $node->byRef
+			&& $this->variadic === $node->variadic
+			&& $this->hasDefault === $node->hasDefault;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['name'],
+			$properties['type'],
+			$properties['byRef'],
+			$properties['variadic'],
+			$properties['hasDefault'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'name' => $this->name,
+				'type' => $this->type,
+				'byRef' => $this->byRef,
+				'variadic' => $this->variadic,
+				'hasDefault' => $this->hasDefault,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['name'],
+			$data['type'],
+			$data['byRef'],
+			$data['variadic'],
+			$data['hasDefault'],
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedPhpDocNode.php b/src/Dependency/ExportedNode/ExportedPhpDocNode.php
new file mode 100644
index 00000000..7bf06367
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedPhpDocNode.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use ReturnTypeWillChange;
+
+final class ExportedPhpDocNode implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param array<string, string> $uses alias(string) => fullName(string)
+	 * @param array<string, string> $constUses alias(string) => fullName(string)
+	 */
+	public function __construct(private string $phpDocString, private ?string $namespace, private array $uses, private array $constUses)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		return $this->phpDocString === $node->phpDocString
+			&& $this->namespace === $node->namespace
+			&& $this->uses === $node->uses
+			&& $this->constUses === $node->constUses;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'phpDocString' => $this->phpDocString,
+				'namespace' => $this->namespace,
+				'uses' => $this->uses,
+				'constUses' => $this->constUses,
+			],
+		];
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self($properties['phpDocString'], $properties['namespace'], $properties['uses'], $properties['constUses'] ?? []);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self($data['phpDocString'], $data['namespace'], $data['uses'], $data['constUses'] ?? []);
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedPropertiesNode.php b/src/Dependency/ExportedNode/ExportedPropertiesNode.php
new file mode 100644
index 00000000..2471b3c1
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedPropertiesNode.php
@@ -0,0 +1,138 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\ShouldNotHappenException;
+use ReturnTypeWillChange;
+use function array_map;
+use function count;
+
+final class ExportedPropertiesNode implements JsonSerializable, ExportedNode
+{
+
+	/**
+	 * @param string[] $names
+	 * @param ExportedAttributeNode[] $attributes
+	 */
+	public function __construct(
+		private array $names,
+		private ?ExportedPhpDocNode $phpDoc,
+		private ?string $type,
+		private bool $public,
+		private bool $private,
+		private bool $static,
+		private bool $readonly,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		if ($this->phpDoc === null) {
+			if ($node->phpDoc !== null) {
+				return false;
+			}
+		} elseif ($node->phpDoc !== null) {
+			if (!$this->phpDoc->equals($node->phpDoc)) {
+				return false;
+			}
+		} else {
+			return false;
+		}
+
+		if (count($this->names) !== count($node->names)) {
+			return false;
+		}
+
+		foreach ($this->names as $i => $name) {
+			if ($name !== $node->names[$i]) {
+				return false;
+			}
+		}
+
+		if (count($this->attributes) !== count($node->attributes)) {
+			return false;
+		}
+
+		foreach ($this->attributes as $i => $attribute) {
+			if (!$attribute->equals($node->attributes[$i])) {
+				return false;
+			}
+		}
+
+		return $this->type === $node->type
+			&& $this->public === $node->public
+			&& $this->private === $node->private
+			&& $this->static === $node->static
+			&& $this->readonly === $node->readonly;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['names'],
+			$properties['phpDoc'],
+			$properties['type'],
+			$properties['public'],
+			$properties['private'],
+			$properties['static'],
+			$properties['readonly'],
+			$properties['attributes'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['names'],
+			$data['phpDoc'] !== null ? ExportedPhpDocNode::decode($data['phpDoc']['data']) : null,
+			$data['type'],
+			$data['public'],
+			$data['private'],
+			$data['static'],
+			$data['readonly'],
+			array_map(static function (array $attributeData): ExportedAttributeNode {
+				if ($attributeData['type'] !== ExportedAttributeNode::class) {
+					throw new ShouldNotHappenException();
+				}
+				return ExportedAttributeNode::decode($attributeData['data']);
+			}, $data['attributes']),
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'names' => $this->names,
+				'phpDoc' => $this->phpDoc,
+				'type' => $this->type,
+				'public' => $this->public,
+				'private' => $this->private,
+				'static' => $this->static,
+				'readonly' => $this->readonly,
+				'attributes' => $this->attributes,
+			],
+		];
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedTraitNode.php b/src/Dependency/ExportedNode/ExportedTraitNode.php
new file mode 100644
index 00000000..ff3243bd
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedTraitNode.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use PHPStan\Dependency\RootExportedNode;
+use ReturnTypeWillChange;
+
+final class ExportedTraitNode implements RootExportedNode, JsonSerializable
+{
+
+	public function __construct(private string $traitName)
+	{
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		return false;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self($properties['traitName']);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self($data['traitName']);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'traitName' => $this->traitName,
+			],
+		];
+	}
+
+	/**
+	 * @return self::TYPE_TRAIT
+	 */
+	public function getType(): string
+	{
+		return self::TYPE_TRAIT;
+	}
+
+	public function getName(): string
+	{
+		return $this->traitName;
+	}
+
+}
diff --git a/src/Dependency/ExportedNode/ExportedTraitUseAdaptation.php b/src/Dependency/ExportedNode/ExportedTraitUseAdaptation.php
new file mode 100644
index 00000000..96e758f9
--- /dev/null
+++ b/src/Dependency/ExportedNode/ExportedTraitUseAdaptation.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Dependency\ExportedNode;
+return;
+
+use JsonSerializable;
+use PHPStan\Dependency\ExportedNode;
+use ReturnTypeWillChange;
+
+final class ExportedTraitUseAdaptation implements ExportedNode, JsonSerializable
+{
+
+	/**
+	 * @param string[]|null $insteadOfs
+	 */
+	private function __construct(
+		private ?string $traitName,
+		private string $method,
+		private ?int $newModifier,
+		private ?string $newName,
+		private ?array $insteadOfs,
+	)
+	{
+	}
+
+	public static function createAlias(
+		?string $traitName,
+		string $method,
+		?int $newModifier,
+		?string $newName,
+	): self
+	{
+		return new self($traitName, $method, $newModifier, $newName, null);
+	}
+
+	/**
+	 * @param string[] $insteadOfs
+	 */
+	public static function createPrecedence(
+		?string $traitName,
+		string $method,
+		array $insteadOfs,
+	): self
+	{
+		return new self($traitName, $method, null, null, $insteadOfs);
+	}
+
+	public function equals(ExportedNode $node): bool
+	{
+		if (!$node instanceof self) {
+			return false;
+		}
+
+		return $this->traitName === $node->traitName
+			&& $this->method === $node->method
+			&& $this->newModifier === $node->newModifier
+			&& $this->newName === $node->newName
+			&& $this->insteadOfs === $node->insteadOfs;
+	}
+
+	/**
+	 * @param mixed[] $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self(
+			$properties['traitName'],
+			$properties['method'],
+			$properties['newModifier'],
+			$properties['newName'],
+			$properties['insteadOfs'],
+		);
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public static function decode(array $data): self
+	{
+		return new self(
+			$data['traitName'],
+			$data['method'],
+			$data['newModifier'],
+			$data['newName'],
+			$data['insteadOfs'],
+		);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	#[ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return [
+			'type' => self::class,
+			'data' => [
+				'traitName' => $this->traitName,
+				'method' => $this->method,
+				'newModifier' => $this->newModifier,
+				'newName' => $this->newName,
+				'insteadOfs' => $this->insteadOfs,
+			],
+		];
+	}
+
+}
diff --git a/src/Dependency/ExportedNodeFetcher.php b/src/Dependency/ExportedNodeFetcher.php
new file mode 100644
index 00000000..ad7b076f
--- /dev/null
+++ b/src/Dependency/ExportedNodeFetcher.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+use PhpParser\NodeTraverser;
+use PHPStan\Parser\Parser;
+use PHPStan\Parser\ParserErrorsException;
+
+final class ExportedNodeFetcher
+{
+
+	public function __construct(
+		private Parser $parser,
+		private ExportedNodeVisitor $visitor,
+	)
+	{
+	}
+
+	/**
+	 * @return RootExportedNode[]
+	 */
+	public function fetchNodes(string $fileName): array
+	{
+		$nodeTraverser = new NodeTraverser();
+		$nodeTraverser->addVisitor($this->visitor);
+
+		try {
+			$ast = $this->parser->parseFile($fileName);
+		} catch (ParserErrorsException) {
+			return [];
+		}
+		$this->visitor->reset($fileName);
+		$nodeTraverser->traverse($ast);
+
+		return $this->visitor->getExportedNodes();
+	}
+
+}
diff --git a/src/Dependency/ExportedNodeResolver.php b/src/Dependency/ExportedNodeResolver.php
new file mode 100644
index 00000000..90dcd6de
--- /dev/null
+++ b/src/Dependency/ExportedNodeResolver.php
@@ -0,0 +1,386 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\Dependency\ExportedNode\ExportedAttributeNode;
+use PHPStan\Dependency\ExportedNode\ExportedClassConstantNode;
+use PHPStan\Dependency\ExportedNode\ExportedClassConstantsNode;
+use PHPStan\Dependency\ExportedNode\ExportedClassNode;
+use PHPStan\Dependency\ExportedNode\ExportedEnumCaseNode;
+use PHPStan\Dependency\ExportedNode\ExportedEnumNode;
+use PHPStan\Dependency\ExportedNode\ExportedFunctionNode;
+use PHPStan\Dependency\ExportedNode\ExportedInterfaceNode;
+use PHPStan\Dependency\ExportedNode\ExportedMethodNode;
+use PHPStan\Dependency\ExportedNode\ExportedParameterNode;
+use PHPStan\Dependency\ExportedNode\ExportedPhpDocNode;
+use PHPStan\Dependency\ExportedNode\ExportedPropertiesNode;
+use PHPStan\Dependency\ExportedNode\ExportedTraitNode;
+use PHPStan\Dependency\ExportedNode\ExportedTraitUseAdaptation;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Node\Printer\NodeTypePrinter;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use function array_map;
+use function is_string;
+
+final class ExportedNodeResolver
+{
+
+	public function __construct(private FileTypeMapper $fileTypeMapper, private ExprPrinter $exprPrinter)
+	{
+	}
+
+	public function resolve(string $fileName, Node $node): ?RootExportedNode
+	{
+		if ($node instanceof Class_ && isset($node->namespacedName)) {
+			$docComment = $node->getDocComment();
+			$extendsName = null;
+			if ($node->extends !== null) {
+				$extendsName = $node->extends->toString();
+			}
+
+			$implementsNames = [];
+			foreach ($node->implements as $className) {
+				$implementsNames[] = $className->toString();
+			}
+
+			$usedTraits = [];
+			$adaptations = [];
+			foreach ($node->getTraitUses() as $traitUse) {
+				foreach ($traitUse->traits as $usedTraitName) {
+					$usedTraits[] = $usedTraitName->toString();
+				}
+				foreach ($traitUse->adaptations as $adaptation) {
+					$adaptations[] = $adaptation;
+				}
+			}
+
+			$className = $node->namespacedName->toString();
+
+			return new ExportedClassNode(
+				$className,
+				$this->exportPhpDocNode(
+					$fileName,
+					$className,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+				$node->isAbstract(),
+				$node->isFinal(),
+				$extendsName,
+				$implementsNames,
+				$usedTraits,
+				array_map(static function (Node\Stmt\TraitUseAdaptation $adaptation): ExportedTraitUseAdaptation {
+					if ($adaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
+						return ExportedTraitUseAdaptation::createAlias(
+							$adaptation->trait !== null ? $adaptation->trait->toString() : null,
+							$adaptation->method->toString(),
+							$adaptation->newModifier,
+							$adaptation->newName !== null ? $adaptation->newName->toString() : null,
+						);
+					}
+
+					if ($adaptation instanceof Node\Stmt\TraitUseAdaptation\Precedence) {
+						return ExportedTraitUseAdaptation::createPrecedence(
+							$adaptation->trait !== null ? $adaptation->trait->toString() : null,
+							$adaptation->method->toString(),
+							array_map(static fn (Name $name): string => $name->toString(), $adaptation->insteadof),
+						);
+					}
+
+					throw new ShouldNotHappenException();
+				}, $adaptations),
+				$this->exportClassStatements($node->stmts, $fileName, $className),
+				$this->exportAttributeNodes($node->attrGroups),
+			);
+		}
+
+		if ($node instanceof Node\Stmt\Interface_ && isset($node->namespacedName)) {
+			$extendsNames = array_map(static fn (Name $name): string => (string) $name, $node->extends);
+			$docComment = $node->getDocComment();
+
+			$interfaceName = $node->namespacedName->toString();
+
+			return new ExportedInterfaceNode(
+				$interfaceName,
+				$this->exportPhpDocNode(
+					$fileName,
+					$interfaceName,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+				$extendsNames,
+				$this->exportClassStatements($node->stmts, $fileName, $interfaceName),
+			);
+		}
+
+		if ($node instanceof Node\Stmt\Enum_ && $node->namespacedName !== null) {
+			$implementsNames = array_map(static fn (Name $name): string => (string) $name, $node->implements);
+			$docComment = $node->getDocComment();
+
+			$enumName = $node->namespacedName->toString();
+			$scalarType = null;
+			if ($node->scalarType !== null) {
+				$scalarType = $node->scalarType->toString();
+			}
+
+			return new ExportedEnumNode(
+				$enumName,
+				$scalarType,
+				$this->exportPhpDocNode(
+					$fileName,
+					$enumName,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+				$implementsNames,
+				$this->exportClassStatements($node->stmts, $fileName, $enumName),
+				$this->exportAttributeNodes($node->attrGroups),
+			);
+		}
+
+		if ($node instanceof Node\Stmt\Trait_ && isset($node->namespacedName)) {
+			return new ExportedTraitNode($node->namespacedName->toString());
+		}
+
+		if ($node instanceof Function_) {
+			$functionName = $node->name->name;
+			if (isset($node->namespacedName)) {
+				$functionName = (string) $node->namespacedName;
+			}
+
+			$docComment = $node->getDocComment();
+
+			return new ExportedFunctionNode(
+				$functionName,
+				$this->exportPhpDocNode(
+					$fileName,
+					null,
+					$functionName,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+				$node->byRef,
+				NodeTypePrinter::printType($node->returnType),
+				$this->exportParameterNodes($node->params),
+				$this->exportAttributeNodes($node->attrGroups),
+			);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param Node\Param[] $params
+	 * @return ExportedParameterNode[]
+	 */
+	private function exportParameterNodes(array $params): array
+	{
+		$nodes = [];
+		foreach ($params as $param) {
+			if (!$param->var instanceof Node\Expr\Variable || !is_string($param->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$type = $param->type;
+			if (
+				$type !== null
+				&& $param->default instanceof Node\Expr\ConstFetch
+				&& $param->default->name->toLowerString() === 'null'
+			) {
+				if ($type instanceof Node\UnionType) {
+					$innerTypes = $type->types;
+					$innerTypes[] = new Name('null');
+					$type = new Node\UnionType($innerTypes);
+				} elseif ($type instanceof Node\Identifier || $type instanceof Name) {
+					$type = new Node\NullableType($type);
+				}
+			}
+			$nodes[] = new ExportedParameterNode(
+				$param->var->name,
+				NodeTypePrinter::printType($type),
+				$param->byRef,
+				$param->variadic,
+				$param->default !== null,
+				$this->exportAttributeNodes($param->attrGroups),
+			);
+		}
+
+		return $nodes;
+	}
+
+	private function exportPhpDocNode(
+		string $file,
+		?string $className,
+		?string $functionName,
+		?string $text,
+	): ?ExportedPhpDocNode
+	{
+		if ($text === null) {
+			return null;
+		}
+
+		$resolvedPhpDocBlock = $this->fileTypeMapper->getResolvedPhpDoc(
+			$file,
+			$className,
+			null,
+			$functionName,
+			$text,
+		);
+
+		$nameScope = $resolvedPhpDocBlock->getNullableNameScope();
+		if ($nameScope === null) {
+			return null;
+		}
+
+		return new ExportedPhpDocNode($text, $nameScope->getNamespace(), $nameScope->getUses(), $nameScope->getConstUses());
+	}
+
+	/**
+	 * @param Node\Stmt[] $statements
+	 * @return ExportedNode[]
+	 */
+	private function exportClassStatements(array $statements, string $fileName, string $namespacedName): array
+	{
+		$exportedNodes = [];
+		foreach ($statements as $statement) {
+			$exportedNode = $this->exportClassStatement($statement, $fileName, $namespacedName);
+			if ($exportedNode === null) {
+				continue;
+			}
+
+			$exportedNodes[] = $exportedNode;
+		}
+
+		return $exportedNodes;
+	}
+
+	private function exportClassStatement(Node\Stmt $node, string $fileName, string $namespacedName): ?ExportedNode
+	{
+		if ($node instanceof ClassMethod) {
+			if ($node->isAbstract() || $node->isFinal() || !$node->isPrivate()) {
+				$methodName = $node->name->toString();
+				$docComment = $node->getDocComment();
+
+				return new ExportedMethodNode(
+					$methodName,
+					$this->exportPhpDocNode(
+						$fileName,
+						$namespacedName,
+						$methodName,
+						$docComment !== null ? $docComment->getText() : null,
+					),
+					$node->byRef,
+					$node->isPublic(),
+					$node->isPrivate(),
+					$node->isAbstract(),
+					$node->isFinal(),
+					$node->isStatic(),
+					NodeTypePrinter::printType($node->returnType),
+					$this->exportParameterNodes($node->params),
+					$this->exportAttributeNodes($node->attrGroups),
+				);
+			}
+		}
+
+		if ($node instanceof Node\Stmt\Property) {
+			if ($node->isPrivate()) {
+				return null;
+			}
+
+			$docComment = $node->getDocComment();
+
+			return new ExportedPropertiesNode(
+				array_map(static fn (Node\PropertyItem $prop): string => $prop->name->toString(), $node->props),
+				$this->exportPhpDocNode(
+					$fileName,
+					$namespacedName,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+				NodeTypePrinter::printType($node->type),
+				$node->isPublic(),
+				$node->isPrivate(),
+				$node->isStatic(),
+				$node->isReadonly(),
+				$this->exportAttributeNodes($node->attrGroups),
+			);
+		}
+
+		if ($node instanceof Node\Stmt\ClassConst) {
+			if ($node->isPrivate()) {
+				return null;
+			}
+
+			$docComment = $node->getDocComment();
+
+			$constants = [];
+			foreach ($node->consts as $const) {
+				$constants[] = new ExportedClassConstantNode(
+					$const->name->toString(),
+					$this->exprPrinter->printExpr($const->value),
+					$this->exportAttributeNodes($node->attrGroups),
+				);
+			}
+
+			return new ExportedClassConstantsNode(
+				$constants,
+				$node->isPublic(),
+				$node->isPrivate(),
+				$node->isFinal(),
+				$this->exportPhpDocNode(
+					$fileName,
+					$namespacedName,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+			);
+		}
+
+		if ($node instanceof Node\Stmt\EnumCase) {
+			$docComment = $node->getDocComment();
+
+			return new ExportedEnumCaseNode(
+				$node->name->toString(),
+				$node->expr !== null ? $this->exprPrinter->printExpr($node->expr) : null,
+				$this->exportPhpDocNode(
+					$fileName,
+					$namespacedName,
+					null,
+					$docComment !== null ? $docComment->getText() : null,
+				),
+			);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param Node\AttributeGroup[] $attributeGroups
+	 * @return ExportedAttributeNode[]
+	 */
+	private function exportAttributeNodes(array $attributeGroups): array
+	{
+		$nodes = [];
+		foreach ($attributeGroups as $attributeGroup) {
+			foreach ($attributeGroup->attrs as $attribute) {
+				$args = [];
+				foreach ($attribute->args as $i => $arg) {
+					$args[$arg->name->name ?? $i] = $this->exprPrinter->printExpr($arg->value);
+				}
+
+				$nodes[] = new ExportedAttributeNode(
+					$attribute->name->toString(),
+					$args,
+				);
+			}
+		}
+
+		return $nodes;
+	}
+
+}
diff --git a/src/Dependency/ExportedNodeVisitor.php b/src/Dependency/ExportedNodeVisitor.php
new file mode 100644
index 00000000..d3eae618
--- /dev/null
+++ b/src/Dependency/ExportedNodeVisitor.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitor;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\ShouldNotHappenException;
+
+final class ExportedNodeVisitor extends NodeVisitorAbstract
+{
+
+	private ?string $fileName = null;
+
+	/** @var RootExportedNode[] */
+	private array $currentNodes = [];
+
+	/**
+	 * ExportedNodeVisitor constructor.
+	 *
+	 */
+	public function __construct(private ExportedNodeResolver $exportedNodeResolver)
+	{
+	}
+
+	public function reset(string $fileName): void
+	{
+		$this->fileName = $fileName;
+		$this->currentNodes = [];
+	}
+
+	/**
+	 * @return RootExportedNode[]
+	 */
+	public function getExportedNodes(): array
+	{
+		return $this->currentNodes;
+	}
+
+	public function enterNode(Node $node): ?int
+	{
+		if ($this->fileName === null) {
+			throw new ShouldNotHappenException();
+		}
+		$exportedNode = $this->exportedNodeResolver->resolve($this->fileName, $node);
+		if ($exportedNode !== null) {
+			$this->currentNodes[] = $exportedNode;
+		}
+
+		if (
+			$node instanceof Node\Stmt\ClassMethod
+			|| $node instanceof Node\Stmt\Function_
+			|| $node instanceof Node\Stmt\Trait_
+		) {
+			return NodeVisitor::DONT_TRAVERSE_CHILDREN;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Dependency/NodeDependencies.php b/src/Dependency/NodeDependencies.php
new file mode 100644
index 00000000..b13d11a8
--- /dev/null
+++ b/src/Dependency/NodeDependencies.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+use PHPStan\File\FileHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\FunctionReflection;
+use function array_values;
+
+final class NodeDependencies
+{
+
+	/**
+	 * @param array<int, ClassReflection|FunctionReflection> $reflections
+	 */
+	public function __construct(
+		private FileHelper $fileHelper,
+		private array $reflections,
+		private ?RootExportedNode $exportedNode,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string, true> $analysedFiles
+	 * @return string[]
+	 */
+	public function getFileDependencies(string $currentFile, array $analysedFiles): array
+	{
+		$dependencies = [];
+
+		foreach ($this->reflections as $dependencyReflection) {
+			$dependencyFile = $dependencyReflection->getFileName();
+			if ($dependencyFile === null) {
+				continue;
+			}
+			$dependencyFile = $this->fileHelper->normalizePath($dependencyFile);
+
+			if ($currentFile === $dependencyFile) {
+				continue;
+			}
+
+			if (!isset($analysedFiles[$dependencyFile])) {
+				continue;
+			}
+
+			$dependencies[$dependencyFile] = $dependencyFile;
+		}
+
+		return array_values($dependencies);
+	}
+
+	public function getExportedNode(): ?RootExportedNode
+	{
+		return $this->exportedNode;
+	}
+
+}
diff --git a/src/Dependency/RootExportedNode.php b/src/Dependency/RootExportedNode.php
new file mode 100644
index 00000000..8ace31d7
--- /dev/null
+++ b/src/Dependency/RootExportedNode.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\Dependency;
+return;
+
+interface RootExportedNode extends ExportedNode
+{
+
+	public const TYPE_CLASS = 'class';
+
+	public const TYPE_INTERFACE = 'interface';
+
+	public const TYPE_ENUM = 'enum';
+
+	public const TYPE_TRAIT = 'trait';
+
+	public const TYPE_FUNCTION = 'function';
+
+	/** @return self::TYPE_* */
+	public function getType(): string;
+
+	public function getName(): string;
+
+}
diff --git a/src/DependencyInjection/BleedingEdgeToggle.php b/src/DependencyInjection/BleedingEdgeToggle.php
new file mode 100644
index 00000000..f81cf098
--- /dev/null
+++ b/src/DependencyInjection/BleedingEdgeToggle.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+final class BleedingEdgeToggle
+{
+
+	private static bool $bleedingEdge = false;
+
+	public static function isBleedingEdge(): bool
+	{
+		return self::$bleedingEdge;
+	}
+
+	public static function setBleedingEdge(bool $bleedingEdge): void
+	{
+		self::$bleedingEdge = $bleedingEdge;
+	}
+
+}
diff --git a/src/DependencyInjection/ConditionalTagsExtension.php b/src/DependencyInjection/ConditionalTagsExtension.php
new file mode 100644
index 00000000..2ee4cac7
--- /dev/null
+++ b/src/DependencyInjection/ConditionalTagsExtension.php
@@ -0,0 +1,93 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette;
+use Nette\DI\CompilerExtension;
+use Nette\Schema\Expect;
+use PHPStan\Analyser\ResultCache\ResultCacheMetaExtension;
+use PHPStan\Analyser\TypeSpecifierFactory;
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\Collectors\RegistryFactory as CollectorRegistryFactory;
+use PHPStan\DependencyInjection\Type\LazyDynamicThrowTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\LazyParameterClosureTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\LazyParameterOutTypeExtensionProvider;
+use PHPStan\Diagnose\DiagnoseExtension;
+use PHPStan\Parser\RichParser;
+use PHPStan\PhpDoc\StubFilesExtension;
+use PHPStan\PhpDoc\TypeNodeResolverExtension;
+use PHPStan\Rules\Constants\AlwaysUsedClassConstantsExtensionProvider;
+use PHPStan\Rules\LazyRegistry;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\ShouldNotHappenException;
+use function array_reduce;
+use function count;
+use function is_array;
+use function sprintf;
+
+final class ConditionalTagsExtension extends CompilerExtension
+{
+
+	public function getConfigSchema(): Nette\Schema\Schema
+	{
+		$bool = Expect::anyOf(Expect::bool(), Expect::listOf(Expect::bool()));
+		return Expect::arrayOf(Expect::structure([
+			BrokerFactory::PROPERTIES_CLASS_REFLECTION_EXTENSION_TAG => $bool,
+			BrokerFactory::METHODS_CLASS_REFLECTION_EXTENSION_TAG => $bool,
+			BrokerFactory::DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG => $bool,
+			BrokerFactory::DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG => $bool,
+			BrokerFactory::DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG => $bool,
+			BrokerFactory::EXPRESSION_TYPE_RESOLVER_EXTENSION_TAG => $bool,
+			BrokerFactory::OPERATOR_TYPE_SPECIFYING_EXTENSION_TAG => $bool,
+			BrokerFactory::ALLOWED_SUB_TYPES_CLASS_REFLECTION_EXTENSION_TAG => $bool,
+			LazyRegistry::RULE_TAG => $bool,
+			TypeNodeResolverExtension::EXTENSION_TAG => $bool,
+			StubFilesExtension::EXTENSION_TAG => $bool,
+			AlwaysUsedClassConstantsExtensionProvider::EXTENSION_TAG => $bool,
+			ReadWritePropertiesExtensionProvider::EXTENSION_TAG => $bool,
+			TypeSpecifierFactory::FUNCTION_TYPE_SPECIFYING_EXTENSION_TAG => $bool,
+			TypeSpecifierFactory::METHOD_TYPE_SPECIFYING_EXTENSION_TAG => $bool,
+			TypeSpecifierFactory::STATIC_METHOD_TYPE_SPECIFYING_EXTENSION_TAG => $bool,
+			RichParser::VISITOR_SERVICE_TAG => $bool,
+			CollectorRegistryFactory::COLLECTOR_TAG => $bool,
+			LazyDynamicThrowTypeExtensionProvider::FUNCTION_TAG => $bool,
+			LazyDynamicThrowTypeExtensionProvider::METHOD_TAG => $bool,
+			LazyDynamicThrowTypeExtensionProvider::STATIC_METHOD_TAG => $bool,
+			LazyParameterClosureTypeExtensionProvider::FUNCTION_TAG => $bool,
+			LazyParameterClosureTypeExtensionProvider::METHOD_TAG => $bool,
+			LazyParameterClosureTypeExtensionProvider::STATIC_METHOD_TAG => $bool,
+			LazyParameterOutTypeExtensionProvider::FUNCTION_TAG => $bool,
+			LazyParameterOutTypeExtensionProvider::METHOD_TAG => $bool,
+			LazyParameterOutTypeExtensionProvider::STATIC_METHOD_TAG => $bool,
+			DiagnoseExtension::EXTENSION_TAG => $bool,
+			ResultCacheMetaExtension::EXTENSION_TAG => $bool,
+		])->min(1));
+	}
+
+	public function beforeCompile(): void
+	{
+		/** @var mixed[] $config */
+		$config = $this->config;
+		$builder = $this->getContainerBuilder();
+
+		foreach ($config as $type => $tags) {
+			$services = $builder->findByType($type);
+			if (count($services) === 0) {
+				throw new ShouldNotHappenException(sprintf('No services of type "%s" found.', $type));
+			}
+			foreach ($services as $service) {
+				foreach ($tags as $tag => $parameter) {
+					if (is_array($parameter)) {
+						$parameter = array_reduce($parameter, static fn ($carry, $item) => $carry && (bool) $item, true);
+					}
+					if ((bool) $parameter) {
+						$service->addTag($tag);
+						continue;
+					}
+				}
+			}
+		}
+	}
+
+}
diff --git a/src/DependencyInjection/Configurator.php b/src/DependencyInjection/Configurator.php
new file mode 100644
index 00000000..db7eac05
--- /dev/null
+++ b/src/DependencyInjection/Configurator.php
@@ -0,0 +1,220 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use DirectoryIterator;
+use Nette\DI\Config\Loader;
+use Nette\DI\Container as OriginalNetteContainer;
+use Nette\DI\ContainerLoader;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\CouldNotWriteFileException;
+use PHPStan\File\FileReader;
+use PHPStan\File\FileWriter;
+use function array_keys;
+use function count;
+use function error_reporting;
+use function explode;
+use function implode;
+use function in_array;
+use function is_dir;
+use function is_file;
+use function restore_error_handler;
+use function set_error_handler;
+use function sha1_file;
+use function sprintf;
+use function str_ends_with;
+use function substr;
+use function time;
+use function trim;
+use function unlink;
+use const E_USER_DEPRECATED;
+use const PHP_RELEASE_VERSION;
+use const PHP_VERSION_ID;
+
+final class Configurator extends \Nette\Bootstrap\Configurator
+{
+
+	/** @var string[] */
+	private array $allConfigFiles = [];
+
+	public function __construct(private LoaderFactory $loaderFactory, private bool $journalContainer)
+	{
+		parent::__construct();
+	}
+
+	protected function createLoader(): Loader
+	{
+		return $this->loaderFactory->createLoader();
+	}
+
+	/**
+	 * @param string[] $allConfigFiles
+	 */
+	public function setAllConfigFiles(array $allConfigFiles): void
+	{
+		$this->allConfigFiles = $allConfigFiles;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	protected function getDefaultParameters(): array
+	{
+		return [];
+	}
+
+	public function getContainerCacheDirectory(): string
+	{
+		return $this->getCacheDirectory() . '/nette.configurator';
+	}
+
+	public function loadContainer(): string
+	{
+		$loader = new ContainerLoader(
+			$this->getContainerCacheDirectory(),
+			$this->staticParameters['debugMode'],
+		);
+
+		$className = $loader->load(
+			[$this, 'generateContainer'],
+			[$this->staticParameters, array_keys($this->dynamicParameters), $this->configs, PHP_VERSION_ID - PHP_RELEASE_VERSION, NeonAdapter::CACHE_KEY, $this->getAllConfigFilesHashes()],
+		);
+
+		if ($this->journalContainer) {
+			$this->journal($className);
+		}
+
+		return $className;
+	}
+
+	private function journal(string $currentContainerClassName): void
+	{
+		$directory = $this->getContainerCacheDirectory();
+		if (!is_dir($directory)) {
+			return;
+		}
+
+		$journalFile = $directory . '/container.journal';
+		if (!is_file($journalFile)) {
+			try {
+				FileWriter::write($journalFile, sprintf("%s:%d\n", $currentContainerClassName, time()));
+			} catch (CouldNotWriteFileException) {
+				// pass
+			}
+
+			return;
+		}
+
+		try {
+			$journalContents = FileReader::read($journalFile);
+		} catch (CouldNotReadFileException) {
+			return;
+		}
+
+		$journalLines = explode("\n", trim($journalContents));
+		$linesToWrite = [];
+		$usedInTheLastWeek = [];
+		$now = time();
+		$currentAlreadyInTheJournal = false;
+		foreach ($journalLines as $journalLine) {
+			if ($journalLine === '') {
+				continue;
+			}
+			$journalLineParts = explode(':', $journalLine);
+			if (count($journalLineParts) !== 2) {
+				return;
+			}
+			$className = $journalLineParts[0];
+			$containerLastUsedTime = (int) $journalLineParts[1];
+
+			$week = 3600 * 24 * 7;
+
+			if ($containerLastUsedTime + $week < $now) {
+				continue;
+			}
+
+			$usedInTheLastWeek[] = $className;
+
+			if ($currentContainerClassName !== $className) {
+				$linesToWrite[] = sprintf('%s:%d', $className, $containerLastUsedTime);
+				continue;
+			}
+
+			$linesToWrite[] = sprintf('%s:%d', $currentContainerClassName, $now);
+			$currentAlreadyInTheJournal = true;
+		}
+
+		if (!$currentAlreadyInTheJournal) {
+			$linesToWrite[] = sprintf('%s:%d', $currentContainerClassName, $now);
+			$usedInTheLastWeek[] = $currentContainerClassName;
+		}
+
+		try {
+			FileWriter::write($journalFile, implode("\n", $linesToWrite) . "\n");
+		} catch (CouldNotWriteFileException) {
+			return;
+		}
+
+		foreach (new DirectoryIterator($directory) as $fileInfo) {
+			if ($fileInfo->isDot()) {
+				continue;
+			}
+			$fileName = $fileInfo->getFilename();
+			if ($fileName === 'container.journal') {
+				continue;
+			}
+			if (!str_ends_with($fileName, '.php')) {
+				continue;
+			}
+			$fileClassName = substr($fileName, 0, -4);
+			if (in_array($fileClassName, $usedInTheLastWeek, true)) {
+				continue;
+			}
+			$basePathname = $fileInfo->getPathname();
+			@unlink($basePathname);
+			@unlink($basePathname . '.lock');
+			@unlink($basePathname . '.meta');
+		}
+	}
+
+	public function createContainer(bool $initialize = true): OriginalNetteContainer
+	{
+		set_error_handler(static function (int $errno): bool {
+			if ((error_reporting() & $errno) === 0) {
+				// silence @ operator
+				return true;
+			}
+
+			return $errno === E_USER_DEPRECATED;
+		});
+
+		try {
+			$container = parent::createContainer($initialize);
+		} finally {
+			restore_error_handler();
+		}
+
+		return $container;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function getAllConfigFilesHashes(): array
+	{
+		$hashes = [];
+		foreach ($this->allConfigFiles as $file) {
+			$hash = sha1_file($file);
+
+			if ($hash === false) {
+				throw new CouldNotReadFileException($file);
+			}
+
+			$hashes[$file] = $hash;
+		}
+
+		return $hashes;
+	}
+
+}
diff --git a/src/DependencyInjection/Container.php b/src/DependencyInjection/Container.php
new file mode 100644
index 00000000..7751996b
--- /dev/null
+++ b/src/DependencyInjection/Container.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+/** @api */
+interface Container
+{
+
+	public function hasService(string $serviceName): bool;
+
+	/**
+	 * @return mixed
+	 */
+	public function getService(string $serviceName);
+
+	/**
+	 * @template T of object
+	 * @param class-string<T> $className
+	 * @return T
+	 */
+	public function getByType(string $className);
+
+	/**
+	 * @param class-string $className
+	 * @return string[]
+	 */
+	public function findServiceNamesByType(string $className): array;
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getServicesByTag(string $tagName): array;
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getParameters(): array;
+
+	public function hasParameter(string $parameterName): bool;
+
+	/**
+	 * @return mixed
+	 * @throws ParameterNotFoundException
+	 */
+	public function getParameter(string $parameterName);
+
+}
diff --git a/src/DependencyInjection/ContainerFactory.php b/src/DependencyInjection/ContainerFactory.php
new file mode 100644
index 00000000..ff8bb0fb
--- /dev/null
+++ b/src/DependencyInjection/ContainerFactory.php
@@ -0,0 +1,395 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\Bootstrap\Extensions\PhpExtension;
+use Nette\DI\Config\Adapters\PhpAdapter;
+use Nette\DI\Definitions\Statement;
+use Nette\DI\Extensions\ExtensionsExtension;
+use Nette\DI\Helpers;
+use Nette\Schema\Context as SchemaContext;
+use Nette\Schema\Elements\AnyOf;
+use Nette\Schema\Elements\Structure;
+use Nette\Schema\Elements\Type;
+use Nette\Schema\Expect;
+use Nette\Schema\Processor;
+use Nette\Schema\Schema;
+use Nette\Utils\Strings;
+use Nette\Utils\Validators;
+use Phar;
+use PhpParser\Parser;
+use PHPStan\BetterReflection\BetterReflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Command\CommandHelper;
+use PHPStan\File\FileHelper;
+use PHPStan\Node\Printer\Printer;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\PhpVersionStaticAccessor;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ObjectType;
+use function array_diff_key;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function array_unique;
+use function count;
+use function dirname;
+use function extension_loaded;
+use function getenv;
+use function ini_get;
+use function is_array;
+use function is_file;
+use function is_readable;
+use function spl_object_id;
+use function sprintf;
+use function str_ends_with;
+use function substr;
+
+/**
+ * @api
+ */
+final class ContainerFactory
+{
+
+	private FileHelper $fileHelper;
+
+	private string $rootDirectory;
+
+	private string $configDirectory;
+
+	private static ?int $lastInitializedContainerId = null;
+
+	private bool $journalContainer = false;
+
+	/** @api */
+	public function __construct(private string $currentWorkingDirectory)
+	{
+		$this->fileHelper = new FileHelper($currentWorkingDirectory);
+
+		$rootDir = __DIR__ . '/../..';
+		$originalRootDir = $this->fileHelper->normalizePath($rootDir);
+		if (extension_loaded('phar')) {
+			$pharPath = Phar::running(false);
+			if ($pharPath !== '') {
+				$rootDir = dirname($pharPath);
+			}
+		}
+		$this->rootDirectory = $this->fileHelper->normalizePath($rootDir);
+		$this->configDirectory = $originalRootDir . '/conf';
+	}
+
+	public function setJournalContainer(): void
+	{
+		$this->journalContainer = true;
+	}
+
+	/**
+	 * @param string[] $additionalConfigFiles
+	 * @param string[] $analysedPaths
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string[] $analysedPathsFromConfig
+	 */
+	public function create(
+		string $tempDirectory,
+		array $additionalConfigFiles,
+		array $analysedPaths,
+		array $composerAutoloaderProjectPaths = [],
+		array $analysedPathsFromConfig = [],
+		string $usedLevel = CommandHelper::DEFAULT_LEVEL,
+		?string $generateBaselineFile = null,
+		?string $cliAutoloadFile = null,
+	): Container
+	{
+		[$allConfigFiles, $projectConfig] = $this->detectDuplicateIncludedFiles(
+			array_merge([__DIR__ . '/../../conf/parametersSchema.neon'], $additionalConfigFiles),
+			[
+				'rootDir' => $this->rootDirectory,
+				'currentWorkingDirectory' => $this->currentWorkingDirectory,
+				'env' => getenv(),
+			],
+		);
+
+		$configurator = new Configurator(new LoaderFactory(
+			$this->fileHelper,
+			$this->rootDirectory,
+			$this->currentWorkingDirectory,
+			$generateBaselineFile,
+		), $this->journalContainer);
+		$configurator->defaultExtensions = [
+			'php' => PhpExtension::class,
+			'extensions' => ExtensionsExtension::class,
+		];
+		$configurator->setDebugMode(true);
+		$configurator->setTempDirectory($tempDirectory);
+		$configurator->addParameters([
+			'rootDir' => $this->rootDirectory,
+			'currentWorkingDirectory' => $this->currentWorkingDirectory,
+			'cliArgumentsVariablesRegistered' => ini_get('register_argc_argv') === '1',
+			'tmpDir' => $tempDirectory,
+			'additionalConfigFiles' => $additionalConfigFiles,
+			'allConfigFiles' => $allConfigFiles,
+			'composerAutoloaderProjectPaths' => $composerAutoloaderProjectPaths,
+			'generateBaselineFile' => $generateBaselineFile,
+			'usedLevel' => $usedLevel,
+			'cliAutoloadFile' => $cliAutoloadFile,
+		]);
+		$configurator->addDynamicParameters([
+			'analysedPaths' => $analysedPaths,
+			'analysedPathsFromConfig' => $analysedPathsFromConfig,
+			'env' => getenv(),
+		]);
+		$configurator->addConfig($this->configDirectory . '/config.neon');
+		foreach ($additionalConfigFiles as $additionalConfigFile) {
+			$configurator->addConfig($additionalConfigFile);
+		}
+
+		$configurator->setAllConfigFiles($allConfigFiles);
+
+		$container = $configurator->createContainer()->getByType(Container::class);
+		$this->validateParameters($container->getParameters(), $projectConfig['parametersSchema']);
+		self::postInitializeContainer($container);
+
+		return $container;
+	}
+
+	/** @internal */
+	public static function postInitializeContainer(Container $container): void
+	{
+		$containerId = spl_object_id($container);
+		if ($containerId === self::$lastInitializedContainerId) {
+			return;
+		}
+
+		self::$lastInitializedContainerId = $containerId;
+
+		/** @var SourceLocator $sourceLocator */
+		$sourceLocator = $container->getService('betterReflectionSourceLocator');
+
+		/** @var Reflector $reflector */
+		$reflector = $container->getService('betterReflectionReflector');
+
+		/** @var Parser $phpParser */
+		$phpParser = $container->getService('phpParserDecorator');
+
+		BetterReflection::populate(
+			$container->getByType(PhpVersion::class)->getVersionId(),
+			$sourceLocator,
+			$reflector,
+			$phpParser,
+			$container->getByType(PhpStormStubsSourceStubber::class),
+			$container->getByType(Printer::class),
+		);
+
+		ReflectionProviderStaticAccessor::registerInstance($container->getByType(ReflectionProvider::class));
+		PhpVersionStaticAccessor::registerInstance($container->getByType(PhpVersion::class));
+		ObjectType::resetCaches();
+		$container->getService('typeSpecifier');
+
+		BleedingEdgeToggle::setBleedingEdge($container->getParameter('featureToggles')['bleedingEdge']);
+	}
+
+	public function getCurrentWorkingDirectory(): string
+	{
+		return $this->currentWorkingDirectory;
+	}
+
+	public function getRootDirectory(): string
+	{
+		return $this->rootDirectory;
+	}
+
+	public function getConfigDirectory(): string
+	{
+		return $this->configDirectory;
+	}
+
+	/**
+	 * @param string[] $configFiles
+	 * @param array<string, mixed> $loaderParameters
+	 * @return array{list<string>, array<mixed>}
+	 * @throws DuplicateIncludedFilesException
+	 */
+	private function detectDuplicateIncludedFiles(
+		array $configFiles,
+		array $loaderParameters,
+	): array
+	{
+		$neonAdapter = new NeonAdapter();
+		$phpAdapter = new PhpAdapter();
+		$allConfigFiles = [];
+		$configArray = [];
+		foreach ($configFiles as $configFile) {
+			[$tmpConfigFiles, $tmpConfigArray] = self::getConfigFiles($this->fileHelper, $neonAdapter, $phpAdapter, $configFile, $loaderParameters, null);
+			$allConfigFiles = array_merge($allConfigFiles, $tmpConfigFiles);
+
+			/** @var array<mixed> $configArray */
+			$configArray = \Nette\Schema\Helpers::merge($tmpConfigArray, $configArray);
+		}
+
+		$normalized = array_map(fn (string $file): string => $this->fileHelper->normalizePath($file), $allConfigFiles);
+
+		$deduplicated = array_unique($normalized);
+		if (count($normalized) <= count($deduplicated)) {
+			return [$normalized, $configArray];
+		}
+
+		$duplicateFiles = array_unique(array_diff_key($normalized, $deduplicated));
+
+		throw new DuplicateIncludedFilesException($duplicateFiles);
+	}
+
+	/**
+	 * @param array<string, string> $loaderParameters
+	 * @return array{list<string>, array<mixed>}
+	 */
+	private static function getConfigFiles(
+		FileHelper $fileHelper,
+		NeonAdapter $neonAdapter,
+		PhpAdapter $phpAdapter,
+		string $configFile,
+		array $loaderParameters,
+		?string $generateBaselineFile,
+	): array
+	{
+		if ($generateBaselineFile === $fileHelper->normalizePath($configFile)) {
+			return [[], []];
+		}
+		if (!is_file($configFile) || !is_readable($configFile)) {
+			return [[], []];
+		}
+
+		if (str_ends_with($configFile, '.php')) {
+			$data = $phpAdapter->load($configFile);
+		} else {
+			$data = $neonAdapter->load($configFile);
+		}
+		$allConfigFiles = [$configFile];
+		if (isset($data['includes'])) {
+			Validators::assert($data['includes'], 'list', sprintf("section 'includes' in file '%s'", $configFile));
+			$includes = Helpers::expand($data['includes'], $loaderParameters);
+			foreach ($includes as $include) {
+				$include = self::expandIncludedFile($include, $configFile);
+				[$tmpConfigFiles, $tmpConfigArray] = self::getConfigFiles($fileHelper, $neonAdapter, $phpAdapter, $include, $loaderParameters, $generateBaselineFile);
+				$allConfigFiles = array_merge($allConfigFiles, $tmpConfigFiles);
+
+				/** @var array<mixed> $data */
+				$data = \Nette\Schema\Helpers::merge($tmpConfigArray, $data);
+			}
+		}
+
+		return [$allConfigFiles, $data];
+	}
+
+	private static function expandIncludedFile(string $includedFile, string $mainFile): string
+	{
+		return Strings::match($includedFile, '#([a-z]+:)?[/\\\\]#Ai') !== null // is absolute
+			? $includedFile
+			: dirname($mainFile) . '/' . $includedFile;
+	}
+
+	/**
+	 * @param array<mixed> $parameters
+	 * @param array<mixed> $parametersSchema
+	 */
+	private function validateParameters(array $parameters, array $parametersSchema): void
+	{
+		if (!(bool) $parameters['__validate']) {
+			return;
+		}
+
+		$schema = $this->processArgument(
+			new Statement('schema', [
+				new Statement('structure', [$parametersSchema]),
+			]),
+		);
+		$processor = new Processor();
+		$processor->onNewContext[] = static function (SchemaContext $context): void {
+			$context->path = ['parameters'];
+		};
+		$processor->process($schema, $parameters);
+
+		if (
+			!array_key_exists('phpVersion', $parameters)
+			|| !is_array($parameters['phpVersion'])) {
+			return;
+		}
+
+		$phpVersion = $parameters['phpVersion'];
+
+		if ($phpVersion['max'] < $phpVersion['min']) {
+			throw new InvalidPhpVersionException('Invalid PHP version range: phpVersion.max should be greater or equal to phpVersion.min.');
+		}
+	}
+
+	/**
+	 * @param Statement[] $statements
+	 */
+	private function processSchema(array $statements, bool $required = true): Schema
+	{
+		if (count($statements) === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		$parameterSchema = null;
+		foreach ($statements as $statement) {
+			$processedArguments = array_map(fn ($argument) => $this->processArgument($argument), $statement->arguments);
+			if ($parameterSchema === null) {
+				/** @var Type|AnyOf|Structure $parameterSchema */
+				$parameterSchema = Expect::{$statement->getEntity()}(...$processedArguments);
+			} else {
+				$parameterSchema->{$statement->getEntity()}(...$processedArguments);
+			}
+		}
+
+		if ($required) {
+			$parameterSchema->required();
+		}
+
+		return $parameterSchema;
+	}
+
+	/**
+	 * @param mixed $argument
+	 * @return mixed
+	 */
+	private function processArgument($argument, bool $required = true)
+	{
+		if ($argument instanceof Statement) {
+			if ($argument->entity === 'schema') {
+				$arguments = [];
+				foreach ($argument->arguments as $schemaArgument) {
+					if (!$schemaArgument instanceof Statement) {
+						throw new ShouldNotHappenException('schema() should contain another statement().');
+					}
+
+					$arguments[] = $schemaArgument;
+				}
+
+				if (count($arguments) === 0) {
+					throw new ShouldNotHappenException('schema() should have at least one argument.');
+				}
+
+				return $this->processSchema($arguments, $required);
+			}
+
+			return $this->processSchema([$argument], $required);
+		} elseif (is_array($argument)) {
+			$processedArray = [];
+			foreach ($argument as $key => $val) {
+				$required = $key[0] !== '?';
+				$key = $required ? $key : substr($key, 1);
+				$processedArray[$key] = $this->processArgument($val, $required);
+			}
+
+			return $processedArray;
+		}
+
+		return $argument;
+	}
+
+}
diff --git a/src/DependencyInjection/DerivativeContainerFactory.php b/src/DependencyInjection/DerivativeContainerFactory.php
new file mode 100644
index 00000000..b3554af6
--- /dev/null
+++ b/src/DependencyInjection/DerivativeContainerFactory.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use function array_merge;
+
+final class DerivativeContainerFactory
+{
+
+	/**
+	 * @param string[] $additionalConfigFiles
+	 * @param string[] $analysedPaths
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string[] $analysedPathsFromConfig
+	 */
+	public function __construct(
+		private string $currentWorkingDirectory,
+		private string $tempDirectory,
+		private array $additionalConfigFiles,
+		private array $analysedPaths,
+		private array $composerAutoloaderProjectPaths,
+		private array $analysedPathsFromConfig,
+		private string $usedLevel,
+		private ?string $generateBaselineFile,
+		private ?string $cliAutoloadFile,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $additionalConfigFiles
+	 */
+	public function create(array $additionalConfigFiles): Container
+	{
+		$containerFactory = new ContainerFactory(
+			$this->currentWorkingDirectory,
+		);
+		$containerFactory->setJournalContainer();
+
+		return $containerFactory->create(
+			$this->tempDirectory,
+			array_merge($this->additionalConfigFiles, $additionalConfigFiles),
+			$this->analysedPaths,
+			$this->composerAutoloaderProjectPaths,
+			$this->analysedPathsFromConfig,
+			$this->usedLevel,
+			$this->generateBaselineFile,
+			$this->cliAutoloadFile,
+		);
+	}
+
+}
diff --git a/src/DependencyInjection/DuplicateIncludedFilesException.php b/src/DependencyInjection/DuplicateIncludedFilesException.php
new file mode 100644
index 00000000..a8f9490d
--- /dev/null
+++ b/src/DependencyInjection/DuplicateIncludedFilesException.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Exception;
+use function implode;
+use function sprintf;
+
+final class DuplicateIncludedFilesException extends Exception
+{
+
+	/**
+	 * @param string[] $files
+	 */
+	public function __construct(private array $files)
+	{
+		parent::__construct(sprintf('These files are included multiple times: %s', implode(', ', $this->files)));
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getFiles(): array
+	{
+		return $this->files;
+	}
+
+}
diff --git a/src/DependencyInjection/InvalidExcludePathsException.php b/src/DependencyInjection/InvalidExcludePathsException.php
new file mode 100644
index 00000000..e5b23ad7
--- /dev/null
+++ b/src/DependencyInjection/InvalidExcludePathsException.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Exception;
+use function implode;
+
+final class InvalidExcludePathsException extends Exception
+{
+
+	/**
+	 * @param string[] $errors
+	 */
+	public function __construct(private array $errors)
+	{
+		parent::__construct(implode("\n", $this->errors));
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+}
diff --git a/src/DependencyInjection/InvalidIgnoredErrorPatternsException.php b/src/DependencyInjection/InvalidIgnoredErrorPatternsException.php
new file mode 100644
index 00000000..7572f60c
--- /dev/null
+++ b/src/DependencyInjection/InvalidIgnoredErrorPatternsException.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Exception;
+use function implode;
+
+final class InvalidIgnoredErrorPatternsException extends Exception
+{
+
+	/**
+	 * @param string[] $errors
+	 */
+	public function __construct(private array $errors)
+	{
+		parent::__construct(implode("\n", $this->errors));
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+}
diff --git a/src/DependencyInjection/InvalidPhpVersionException.php b/src/DependencyInjection/InvalidPhpVersionException.php
new file mode 100644
index 00000000..850ac598
--- /dev/null
+++ b/src/DependencyInjection/InvalidPhpVersionException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\InvalidConfigurationException;
+
+final class InvalidPhpVersionException extends InvalidConfigurationException
+{
+
+}
diff --git a/src/DependencyInjection/LoaderFactory.php b/src/DependencyInjection/LoaderFactory.php
new file mode 100644
index 00000000..840d62e7
--- /dev/null
+++ b/src/DependencyInjection/LoaderFactory.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\Config\Loader;
+use PHPStan\File\FileHelper;
+use function getenv;
+
+final class LoaderFactory
+{
+
+	public function __construct(
+		private FileHelper $fileHelper,
+		private string $rootDir,
+		private string $currentWorkingDirectory,
+		private ?string $generateBaselineFile,
+	)
+	{
+	}
+
+	public function createLoader(): Loader
+	{
+		$loader = new NeonLoader($this->fileHelper, $this->generateBaselineFile);
+		$loader->addAdapter('dist', NeonAdapter::class);
+		$loader->addAdapter('neon', NeonAdapter::class);
+		$loader->setParameters([
+			'rootDir' => $this->rootDir,
+			'currentWorkingDirectory' => $this->currentWorkingDirectory,
+			'env' => getenv(),
+		]);
+
+		return $loader;
+	}
+
+}
diff --git a/src/DependencyInjection/MemoizingContainer.php b/src/DependencyInjection/MemoizingContainer.php
new file mode 100644
index 00000000..a6bde401
--- /dev/null
+++ b/src/DependencyInjection/MemoizingContainer.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use function array_key_exists;
+
+final class MemoizingContainer implements Container
+{
+
+	/** @var array<string, mixed> */
+	private array $servicesByType = [];
+
+	public function __construct(private Container $originalContainer)
+	{
+	}
+
+	public function hasService(string $serviceName): bool
+	{
+		return $this->originalContainer->hasService($serviceName);
+	}
+
+	public function getService(string $serviceName)
+	{
+		return $this->originalContainer->getService($serviceName);
+	}
+
+	public function getByType(string $className)
+	{
+		if (array_key_exists($className, $this->servicesByType)) {
+			return $this->servicesByType[$className];
+		}
+
+		$service = $this->originalContainer->getByType($className);
+		$this->servicesByType[$className] = $service;
+
+		return $service;
+	}
+
+	public function findServiceNamesByType(string $className): array
+	{
+		return $this->originalContainer->findServiceNamesByType($className);
+	}
+
+	public function getServicesByTag(string $tagName): array
+	{
+		return $this->originalContainer->getServicesByTag($tagName);
+	}
+
+	public function getParameters(): array
+	{
+		return $this->originalContainer->getParameters();
+	}
+
+	public function hasParameter(string $parameterName): bool
+	{
+		return $this->originalContainer->hasParameter($parameterName);
+	}
+
+	public function getParameter(string $parameterName)
+	{
+		return $this->originalContainer->getParameter($parameterName);
+	}
+
+}
diff --git a/src/DependencyInjection/Neon/OptionalPath.php b/src/DependencyInjection/Neon/OptionalPath.php
new file mode 100644
index 00000000..3b05e3f2
--- /dev/null
+++ b/src/DependencyInjection/Neon/OptionalPath.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Neon;
+return;
+
+final class OptionalPath
+{
+
+	public function __construct(public readonly string $path)
+	{
+	}
+
+}
diff --git a/src/DependencyInjection/NeonAdapter.php b/src/DependencyInjection/NeonAdapter.php
new file mode 100644
index 00000000..eb3f33bc
--- /dev/null
+++ b/src/DependencyInjection/NeonAdapter.php
@@ -0,0 +1,221 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\Config\Adapter;
+use Nette\DI\Config\Helpers;
+use Nette\DI\Definitions\Reference;
+use Nette\DI\Definitions\Statement;
+use Nette\DI\InvalidConfigurationException;
+use Nette\Neon\Entity;
+use Nette\Neon\Exception;
+use Nette\Neon\Neon;
+use PHPStan\DependencyInjection\Neon\OptionalPath;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileReader;
+use function array_values;
+use function array_walk_recursive;
+use function count;
+use function dirname;
+use function implode;
+use function in_array;
+use function is_array;
+use function is_int;
+use function is_string;
+use function ltrim;
+use function sprintf;
+use function str_contains;
+use function str_starts_with;
+use function substr;
+
+final class NeonAdapter implements Adapter
+{
+
+	public const CACHE_KEY = 'v30-no-underscore';
+
+	private const PREVENT_MERGING_SUFFIX = '!';
+
+	/** @var FileHelper[] */
+	private array $fileHelpers = [];
+
+	/**
+	 * @return mixed[]
+	 */
+	public function load(string $file): array
+	{
+		$contents = FileReader::read($file);
+		try {
+			return $this->process((array) Neon::decode($contents), '', $file);
+		} catch (Exception $e) {
+			throw new Exception(sprintf('Error while loading %s: %s', $file, $e->getMessage()));
+		}
+	}
+
+	/**
+	 * @param mixed[] $arr
+	 * @return mixed[]
+	 */
+	public function process(array $arr, string $fileKey, string $file): array
+	{
+		$res = [];
+		foreach ($arr as $key => $val) {
+			if (is_string($key) && substr($key, -1) === self::PREVENT_MERGING_SUFFIX) {
+				if (!is_array($val) && $val !== null) {
+					throw new InvalidConfigurationException(sprintf('Replacing operator is available only for arrays, item \'%s\' is not array.', $key));
+				}
+				$key = substr($key, 0, -1);
+				$val[Helpers::PREVENT_MERGING] = true;
+			}
+
+			$keyToResolve = $fileKey;
+			if (is_int($key)) {
+				$keyToResolve .= '[]';
+			} else {
+				$keyToResolve .= '[' . $key . ']';
+			}
+
+			if (is_array($val)) {
+				if (!is_int($key)) {
+					$fileKeyToPass = $fileKey . '[' . $key . ']';
+				} else {
+					$fileKeyToPass = $fileKey . '[]';
+				}
+				$val = $this->process($val, $fileKeyToPass, $file);
+
+			} elseif ($val instanceof Entity) {
+				if (!is_int($key)) {
+					$fileKeyToPass = $fileKey . '(' . $key . ')';
+				} else {
+					$fileKeyToPass = $fileKey . '()';
+				}
+				if ($val->value === Neon::CHAIN) {
+					$tmp = null;
+					foreach ($this->process($val->attributes, $fileKeyToPass, $file) as $st) {
+						$tmp = new Statement(
+							$tmp === null ? $st->getEntity() : [$tmp, ltrim(implode('::', (array) $st->getEntity()), ':')],
+							$st->arguments,
+						);
+					}
+					$val = $tmp;
+				} else {
+					if (
+						in_array($keyToResolve, [
+							'[parameters][excludePaths][]',
+							'[parameters][excludePaths][analyse][]',
+							'[parameters][excludePaths][analyseAndScan][]',
+						], true)
+						&& count($val->attributes) === 1
+						&& $val->attributes[0] === '?'
+						&& is_string($val->value)
+						&& !str_contains($val->value, '%')
+						&& !str_starts_with($val->value, '*')
+					) {
+						$fileHelper = $this->createFileHelperByFile($file);
+						$val = new OptionalPath($fileHelper->normalizePath($fileHelper->absolutizePath($val->value)));
+					} else {
+						$tmp = $this->process([$val->value], $fileKeyToPass, $file);
+						$val = new Statement($tmp[0], $this->process($val->attributes, $fileKeyToPass, $file));
+					}
+				}
+			}
+
+			if (in_array($keyToResolve, [
+				'[parameters][paths][]',
+				'[parameters][excludePaths][]',
+				'[parameters][excludePaths][analyse][]',
+				'[parameters][excludePaths][analyseAndScan][]',
+				'[parameters][ignoreErrors][][paths][]',
+				'[parameters][ignoreErrors][][path]',
+				'[parameters][bootstrapFiles][]',
+				'[parameters][scanFiles][]',
+				'[parameters][scanDirectories][]',
+				'[parameters][tmpDir]',
+				'[parameters][pro][tmpDir]',
+				'[parameters][memoryLimitFile]',
+				'[parameters][benchmarkFile]',
+				'[parameters][stubFiles][]',
+				'[parameters][symfony][consoleApplicationLoader]',
+				'[parameters][symfony][containerXmlPath]',
+				'[parameters][doctrine][objectManagerLoader]',
+			], true) && is_string($val) && !str_contains($val, '%') && !str_starts_with($val, '*')) {
+				$fileHelper = $this->createFileHelperByFile($file);
+				$val = $fileHelper->normalizePath($fileHelper->absolutizePath($val));
+			}
+
+			if (
+				$keyToResolve === '[parameters][excludePaths]'
+				&& $val !== null
+				&& array_values($val) === $val
+			) {
+				$val = ['analyseAndScan' => $val, 'analyse' => []];
+			}
+
+			$res[$key] = $val;
+		}
+		return $res;
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public function dump(array $data): string
+	{
+		array_walk_recursive(
+			$data,
+			static function (&$val): void {
+				if (!($val instanceof Statement)) {
+					return;
+				}
+
+				$val = self::statementToEntity($val);
+			},
+		);
+		return "# generated by Nette\n\n" . Neon::encode($data, Neon::BLOCK);
+	}
+
+	private static function statementToEntity(Statement $val): Entity
+	{
+		array_walk_recursive(
+			$val->arguments,
+			static function (&$val): void {
+				if ($val instanceof Statement) {
+					$val = self::statementToEntity($val);
+				} elseif ($val instanceof Reference) {
+					$val = '@' . $val->getValue();
+				}
+			},
+		);
+
+		$entity = $val->getEntity();
+		if ($entity instanceof Reference) {
+			$entity = '@' . $entity->getValue();
+		} elseif (is_array($entity)) {
+			if ($entity[0] instanceof Statement) {
+				return new Entity(
+					Neon::CHAIN,
+					[
+						self::statementToEntity($entity[0]),
+						new Entity('::' . $entity[1], $val->arguments),
+					],
+				);
+			} elseif ($entity[0] instanceof Reference) {
+				$entity = '@' . $entity[0]->getValue() . '::' . $entity[1];
+			} elseif (is_string($entity[0])) {
+				$entity = $entity[0] . '::' . $entity[1];
+			}
+		}
+		return new Entity($entity, $val->arguments);
+	}
+
+	private function createFileHelperByFile(string $file): FileHelper
+	{
+		$dir = dirname($file);
+		if (!isset($this->fileHelpers[$dir])) {
+			$this->fileHelpers[$dir] = new FileHelper($dir);
+		}
+
+		return $this->fileHelpers[$dir];
+	}
+
+}
diff --git a/src/DependencyInjection/NeonLoader.php b/src/DependencyInjection/NeonLoader.php
new file mode 100644
index 00000000..96e27625
--- /dev/null
+++ b/src/DependencyInjection/NeonLoader.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\Config\Loader;
+use PHPStan\File\FileHelper;
+
+final class NeonLoader extends Loader
+{
+
+	public function __construct(
+		private FileHelper $fileHelper,
+		private ?string $generateBaselineFile,
+	)
+	{
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function load(string $file, ?bool $merge = true): array
+	{
+		if ($this->generateBaselineFile === null) {
+			return parent::load($file, $merge);
+		}
+
+		$normalizedFile = $this->fileHelper->normalizePath($file);
+		if ($this->generateBaselineFile === $normalizedFile) {
+			return [];
+		}
+
+		return parent::load($file, $merge);
+	}
+
+}
diff --git a/src/DependencyInjection/Nette/NetteContainer.php b/src/DependencyInjection/Nette/NetteContainer.php
new file mode 100644
index 00000000..ea830a38
--- /dev/null
+++ b/src/DependencyInjection/Nette/NetteContainer.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Nette;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\ParameterNotFoundException;
+use function array_key_exists;
+use function array_keys;
+use function array_map;
+
+/**
+ * @internal
+ */
+final class NetteContainer implements Container
+{
+
+	public function __construct(private \Nette\DI\Container $container)
+	{
+	}
+
+	public function hasService(string $serviceName): bool
+	{
+		return $this->container->hasService($serviceName);
+	}
+
+	/**
+	 * @return mixed
+	 */
+	public function getService(string $serviceName)
+	{
+		return $this->container->getService($serviceName);
+	}
+
+	/**
+	 * @template T of object
+	 * @param class-string<T> $className
+	 * @return T
+	 */
+	public function getByType(string $className)
+	{
+		return $this->container->getByType($className);
+	}
+
+	/**
+	 * @param class-string $className
+	 * @return string[]
+	 */
+	public function findServiceNamesByType(string $className): array
+	{
+		return $this->container->findByType($className);
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getServicesByTag(string $tagName): array
+	{
+		return $this->tagsToServices($this->container->findByTag($tagName));
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getParameters(): array
+	{
+		return $this->container->getParameters();
+	}
+
+	public function hasParameter(string $parameterName): bool
+	{
+		return array_key_exists($parameterName, $this->container->getParameters());
+	}
+
+	/**
+	 * @return mixed
+	 */
+	public function getParameter(string $parameterName)
+	{
+		if (!$this->hasParameter($parameterName)) {
+			throw new ParameterNotFoundException($parameterName);
+		}
+
+		return $this->container->getParameter($parameterName);
+	}
+
+	/**
+	 * @param mixed[] $tags
+	 * @return mixed[]
+	 */
+	private function tagsToServices(array $tags): array
+	{
+		return array_map(fn (string $serviceName) => $this->getService($serviceName), array_keys($tags));
+	}
+
+}
diff --git a/src/DependencyInjection/ParameterNotFoundException.php b/src/DependencyInjection/ParameterNotFoundException.php
new file mode 100644
index 00000000..aedb199f
--- /dev/null
+++ b/src/DependencyInjection/ParameterNotFoundException.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Exception;
+use function sprintf;
+
+final class ParameterNotFoundException extends Exception
+{
+
+	public function __construct(string $parameterName)
+	{
+		parent::__construct(sprintf('Parameter %s not found in the container.', $parameterName));
+	}
+
+}
diff --git a/src/DependencyInjection/ParametersSchemaExtension.php b/src/DependencyInjection/ParametersSchemaExtension.php
new file mode 100644
index 00000000..48f80b45
--- /dev/null
+++ b/src/DependencyInjection/ParametersSchemaExtension.php
@@ -0,0 +1,19 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\CompilerExtension;
+use Nette\DI\Definitions\Statement;
+use Nette\Schema\Expect;
+use Nette\Schema\Schema;
+
+final class ParametersSchemaExtension extends CompilerExtension
+{
+
+	public function getConfigSchema(): Schema
+	{
+		return Expect::arrayOf(Expect::type(Statement::class))->min(1);
+	}
+
+}
diff --git a/src/DependencyInjection/ProjectConfigHelper.php b/src/DependencyInjection/ProjectConfigHelper.php
new file mode 100644
index 00000000..a16937aa
--- /dev/null
+++ b/src/DependencyInjection/ProjectConfigHelper.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\Definitions\Statement;
+use function array_merge;
+use function array_unique;
+use function array_values;
+use function is_array;
+use function is_string;
+
+final class ProjectConfigHelper
+{
+
+	/**
+	 * @param array<mixed> $projectConfig
+	 * @return list<string>
+	 */
+	public static function getServiceClassNames(array $projectConfig): array
+	{
+		$services = array_merge(
+			$projectConfig['services'] ?? [],
+			$projectConfig['rules'] ?? [],
+		);
+		$classes = [];
+		foreach ($services as $service) {
+			$classes = array_merge($classes, self::getClassesFromConfigDefinition($service));
+			if (!is_array($service)) {
+				continue;
+			}
+
+			foreach (['class', 'factory', 'implement'] as $key) {
+				if (!isset($service[$key])) {
+					continue;
+				}
+
+				$classes = array_merge($classes, self::getClassesFromConfigDefinition($service[$key]));
+			}
+		}
+
+		return array_values(array_unique($classes));
+	}
+
+	/**
+	 * @param mixed $definition
+	 * @return string[]
+	 */
+	private static function getClassesFromConfigDefinition($definition): array
+	{
+		if (is_string($definition)) {
+			return [$definition];
+		}
+
+		if ($definition instanceof Statement) {
+			$entity = $definition->entity;
+			if (is_string($entity)) {
+				return [$entity];
+			} elseif (is_array($entity) && isset($entity[0]) && is_string($entity[0])) {
+				return [$entity[0]];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/DependencyInjection/Reflection/ClassReflectionExtensionRegistryProvider.php b/src/DependencyInjection/Reflection/ClassReflectionExtensionRegistryProvider.php
new file mode 100644
index 00000000..412c4165
--- /dev/null
+++ b/src/DependencyInjection/Reflection/ClassReflectionExtensionRegistryProvider.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Reflection;
+return;
+
+use PHPStan\Reflection\ClassReflectionExtensionRegistry;
+
+interface ClassReflectionExtensionRegistryProvider
+{
+
+	public function getRegistry(): ClassReflectionExtensionRegistry;
+
+}
diff --git a/src/DependencyInjection/Reflection/LazyClassReflectionExtensionRegistryProvider.php b/src/DependencyInjection/Reflection/LazyClassReflectionExtensionRegistryProvider.php
new file mode 100644
index 00000000..e2c5bb37
--- /dev/null
+++ b/src/DependencyInjection/Reflection/LazyClassReflectionExtensionRegistryProvider.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Reflection;
+return;
+
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Reflection\Annotations\AnnotationsMethodsClassReflectionExtension;
+use PHPStan\Reflection\Annotations\AnnotationsPropertiesClassReflectionExtension;
+use PHPStan\Reflection\ClassReflectionExtensionRegistry;
+use PHPStan\Reflection\Mixin\MixinMethodsClassReflectionExtension;
+use PHPStan\Reflection\Mixin\MixinPropertiesClassReflectionExtension;
+use PHPStan\Reflection\Php\PhpClassReflectionExtension;
+use PHPStan\Reflection\RequireExtension\RequireExtendsMethodsClassReflectionExtension;
+use PHPStan\Reflection\RequireExtension\RequireExtendsPropertiesClassReflectionExtension;
+use function array_merge;
+
+final class LazyClassReflectionExtensionRegistryProvider implements ClassReflectionExtensionRegistryProvider
+{
+
+	private ?ClassReflectionExtensionRegistry $registry = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getRegistry(): ClassReflectionExtensionRegistry
+	{
+		if ($this->registry === null) {
+			$phpClassReflectionExtension = $this->container->getByType(PhpClassReflectionExtension::class);
+			$annotationsMethodsClassReflectionExtension = $this->container->getByType(AnnotationsMethodsClassReflectionExtension::class);
+			$annotationsPropertiesClassReflectionExtension = $this->container->getByType(AnnotationsPropertiesClassReflectionExtension::class);
+
+			$mixinMethodsClassReflectionExtension = $this->container->getByType(MixinMethodsClassReflectionExtension::class);
+			$mixinPropertiesClassReflectionExtension = $this->container->getByType(MixinPropertiesClassReflectionExtension::class);
+
+			$this->registry = new ClassReflectionExtensionRegistry(
+				array_merge([$phpClassReflectionExtension], $this->container->getServicesByTag(BrokerFactory::PROPERTIES_CLASS_REFLECTION_EXTENSION_TAG), [$annotationsPropertiesClassReflectionExtension, $mixinPropertiesClassReflectionExtension]),
+				array_merge([$phpClassReflectionExtension], $this->container->getServicesByTag(BrokerFactory::METHODS_CLASS_REFLECTION_EXTENSION_TAG), [$annotationsMethodsClassReflectionExtension, $mixinMethodsClassReflectionExtension]),
+				$this->container->getServicesByTag(BrokerFactory::ALLOWED_SUB_TYPES_CLASS_REFLECTION_EXTENSION_TAG),
+				$this->container->getByType(RequireExtendsPropertiesClassReflectionExtension::class),
+				$this->container->getByType(RequireExtendsMethodsClassReflectionExtension::class),
+			);
+		}
+
+		return $this->registry;
+	}
+
+}
diff --git a/src/DependencyInjection/RulesExtension.php b/src/DependencyInjection/RulesExtension.php
new file mode 100644
index 00000000..92a99120
--- /dev/null
+++ b/src/DependencyInjection/RulesExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\CompilerExtension;
+use Nette\Schema\Expect;
+use Nette\Schema\Schema;
+use PHPStan\Rules\LazyRegistry;
+
+final class RulesExtension extends CompilerExtension
+{
+
+	public function getConfigSchema(): Schema
+	{
+		return Expect::listOf('string');
+	}
+
+	public function loadConfiguration(): void
+	{
+		/** @var mixed[] $config */
+		$config = $this->config;
+		$builder = $this->getContainerBuilder();
+
+		foreach ($config as $key => $rule) {
+			$builder->addDefinition($this->prefix((string) $key))
+				->setFactory($rule)
+				->setAutowired($rule)
+				->addTag(LazyRegistry::RULE_TAG);
+		}
+	}
+
+}
diff --git a/src/DependencyInjection/Type/DynamicReturnTypeExtensionRegistryProvider.php b/src/DependencyInjection/Type/DynamicReturnTypeExtensionRegistryProvider.php
new file mode 100644
index 00000000..cb1b06e2
--- /dev/null
+++ b/src/DependencyInjection/Type/DynamicReturnTypeExtensionRegistryProvider.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\DynamicReturnTypeExtensionRegistry;
+
+interface DynamicReturnTypeExtensionRegistryProvider
+{
+
+	public function getRegistry(): DynamicReturnTypeExtensionRegistry;
+
+}
diff --git a/src/DependencyInjection/Type/DynamicThrowTypeExtensionProvider.php b/src/DependencyInjection/Type/DynamicThrowTypeExtensionProvider.php
new file mode 100644
index 00000000..60c7be6d
--- /dev/null
+++ b/src/DependencyInjection/Type/DynamicThrowTypeExtensionProvider.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\DynamicFunctionThrowTypeExtension;
+use PHPStan\Type\DynamicMethodThrowTypeExtension;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+
+interface DynamicThrowTypeExtensionProvider
+{
+
+	/** @return DynamicFunctionThrowTypeExtension[] */
+	public function getDynamicFunctionThrowTypeExtensions(): array;
+
+	/** @return DynamicMethodThrowTypeExtension[] */
+	public function getDynamicMethodThrowTypeExtensions(): array;
+
+	/** @return DynamicStaticMethodThrowTypeExtension[] */
+	public function getDynamicStaticMethodThrowTypeExtensions(): array;
+
+}
diff --git a/src/DependencyInjection/Type/ExpressionTypeResolverExtensionRegistryProvider.php b/src/DependencyInjection/Type/ExpressionTypeResolverExtensionRegistryProvider.php
new file mode 100644
index 00000000..0d1bdf74
--- /dev/null
+++ b/src/DependencyInjection/Type/ExpressionTypeResolverExtensionRegistryProvider.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\ExpressionTypeResolverExtensionRegistry;
+
+interface ExpressionTypeResolverExtensionRegistryProvider
+{
+
+	public function getRegistry(): ExpressionTypeResolverExtensionRegistry;
+
+}
diff --git a/src/DependencyInjection/Type/LazyDynamicReturnTypeExtensionRegistryProvider.php b/src/DependencyInjection/Type/LazyDynamicReturnTypeExtensionRegistryProvider.php
new file mode 100644
index 00000000..e5958666
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyDynamicReturnTypeExtensionRegistryProvider.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\DynamicReturnTypeExtensionRegistry;
+
+final class LazyDynamicReturnTypeExtensionRegistryProvider implements DynamicReturnTypeExtensionRegistryProvider
+{
+
+	private ?DynamicReturnTypeExtensionRegistry $registry = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getRegistry(): DynamicReturnTypeExtensionRegistry
+	{
+		if ($this->registry === null) {
+			$this->registry = new DynamicReturnTypeExtensionRegistry(
+				$this->container->getByType(ReflectionProvider::class),
+				$this->container->getServicesByTag(BrokerFactory::DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+				$this->container->getServicesByTag(BrokerFactory::DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+				$this->container->getServicesByTag(BrokerFactory::DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG),
+			);
+		}
+
+		return $this->registry;
+	}
+
+}
diff --git a/src/DependencyInjection/Type/LazyDynamicThrowTypeExtensionProvider.php b/src/DependencyInjection/Type/LazyDynamicThrowTypeExtensionProvider.php
new file mode 100644
index 00000000..351a6c64
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyDynamicThrowTypeExtensionProvider.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyDynamicThrowTypeExtensionProvider implements DynamicThrowTypeExtensionProvider
+{
+
+	public const FUNCTION_TAG = 'phpstan.dynamicFunctionThrowTypeExtension';
+	public const METHOD_TAG = 'phpstan.dynamicMethodThrowTypeExtension';
+	public const STATIC_METHOD_TAG = 'phpstan.dynamicStaticMethodThrowTypeExtension';
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getDynamicFunctionThrowTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::FUNCTION_TAG);
+	}
+
+	public function getDynamicMethodThrowTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::METHOD_TAG);
+	}
+
+	public function getDynamicStaticMethodThrowTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::STATIC_METHOD_TAG);
+	}
+
+}
diff --git a/src/DependencyInjection/Type/LazyExpressionTypeResolverExtensionRegistryProvider.php b/src/DependencyInjection/Type/LazyExpressionTypeResolverExtensionRegistryProvider.php
new file mode 100644
index 00000000..fa16aa10
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyExpressionTypeResolverExtensionRegistryProvider.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Type\ExpressionTypeResolverExtensionRegistry;
+
+final class LazyExpressionTypeResolverExtensionRegistryProvider implements ExpressionTypeResolverExtensionRegistryProvider
+{
+
+	private ?ExpressionTypeResolverExtensionRegistry $registry = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getRegistry(): ExpressionTypeResolverExtensionRegistry
+	{
+		if ($this->registry === null) {
+			$this->registry = new ExpressionTypeResolverExtensionRegistry(
+				$this->container->getServicesByTag(BrokerFactory::EXPRESSION_TYPE_RESOLVER_EXTENSION_TAG),
+			);
+		}
+
+		return $this->registry;
+	}
+
+}
diff --git a/src/DependencyInjection/Type/LazyOperatorTypeSpecifyingExtensionRegistryProvider.php b/src/DependencyInjection/Type/LazyOperatorTypeSpecifyingExtensionRegistryProvider.php
new file mode 100644
index 00000000..d1720cb1
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyOperatorTypeSpecifyingExtensionRegistryProvider.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Broker\BrokerFactory;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Type\OperatorTypeSpecifyingExtensionRegistry;
+
+final class LazyOperatorTypeSpecifyingExtensionRegistryProvider implements OperatorTypeSpecifyingExtensionRegistryProvider
+{
+
+	private ?OperatorTypeSpecifyingExtensionRegistry $registry = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getRegistry(): OperatorTypeSpecifyingExtensionRegistry
+	{
+		if ($this->registry === null) {
+			$this->registry = new OperatorTypeSpecifyingExtensionRegistry(
+				$this->container->getServicesByTag(BrokerFactory::OPERATOR_TYPE_SPECIFYING_EXTENSION_TAG),
+			);
+		}
+
+		return $this->registry;
+	}
+
+}
diff --git a/src/DependencyInjection/Type/LazyParameterClosureTypeExtensionProvider.php b/src/DependencyInjection/Type/LazyParameterClosureTypeExtensionProvider.php
new file mode 100644
index 00000000..ecdbf08f
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyParameterClosureTypeExtensionProvider.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyParameterClosureTypeExtensionProvider implements ParameterClosureTypeExtensionProvider
+{
+
+	public const FUNCTION_TAG = 'phpstan.functionParameterClosureTypeExtension';
+	public const METHOD_TAG = 'phpstan.methodParameterClosureTypeExtension';
+	public const STATIC_METHOD_TAG = 'phpstan.staticMethodParameterClosureTypeExtension';
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getFunctionParameterClosureTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::FUNCTION_TAG);
+	}
+
+	public function getMethodParameterClosureTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::METHOD_TAG);
+	}
+
+	public function getStaticMethodParameterClosureTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::STATIC_METHOD_TAG);
+	}
+
+}
diff --git a/src/DependencyInjection/Type/LazyParameterOutTypeExtensionProvider.php b/src/DependencyInjection/Type/LazyParameterOutTypeExtensionProvider.php
new file mode 100644
index 00000000..81c6ed2e
--- /dev/null
+++ b/src/DependencyInjection/Type/LazyParameterOutTypeExtensionProvider.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyParameterOutTypeExtensionProvider implements ParameterOutTypeExtensionProvider
+{
+
+	public const FUNCTION_TAG = 'phpstan.functionParameterOutTypeExtension';
+	public const METHOD_TAG = 'phpstan.methodParameterOutTypeExtension';
+	public const STATIC_METHOD_TAG = 'phpstan.staticMethodParameterOutTypeExtension';
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getFunctionParameterOutTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::FUNCTION_TAG);
+	}
+
+	public function getMethodParameterOutTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::METHOD_TAG);
+	}
+
+	public function getStaticMethodParameterOutTypeExtensions(): array
+	{
+		return $this->container->getServicesByTag(self::STATIC_METHOD_TAG);
+	}
+
+}
diff --git a/src/DependencyInjection/Type/OperatorTypeSpecifyingExtensionRegistryProvider.php b/src/DependencyInjection/Type/OperatorTypeSpecifyingExtensionRegistryProvider.php
new file mode 100644
index 00000000..436aec35
--- /dev/null
+++ b/src/DependencyInjection/Type/OperatorTypeSpecifyingExtensionRegistryProvider.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\OperatorTypeSpecifyingExtensionRegistry;
+
+interface OperatorTypeSpecifyingExtensionRegistryProvider
+{
+
+	public function getRegistry(): OperatorTypeSpecifyingExtensionRegistry;
+
+}
diff --git a/src/DependencyInjection/Type/ParameterClosureTypeExtensionProvider.php b/src/DependencyInjection/Type/ParameterClosureTypeExtensionProvider.php
new file mode 100644
index 00000000..6e77c3ba
--- /dev/null
+++ b/src/DependencyInjection/Type/ParameterClosureTypeExtensionProvider.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\FunctionParameterClosureTypeExtension;
+use PHPStan\Type\MethodParameterClosureTypeExtension;
+use PHPStan\Type\StaticMethodParameterClosureTypeExtension;
+
+interface ParameterClosureTypeExtensionProvider
+{
+
+	/** @return FunctionParameterClosureTypeExtension[] */
+	public function getFunctionParameterClosureTypeExtensions(): array;
+
+	/** @return MethodParameterClosureTypeExtension[] */
+	public function getMethodParameterClosureTypeExtensions(): array;
+
+	/** @return StaticMethodParameterClosureTypeExtension[] */
+	public function getStaticMethodParameterClosureTypeExtensions(): array;
+
+}
diff --git a/src/DependencyInjection/Type/ParameterOutTypeExtensionProvider.php b/src/DependencyInjection/Type/ParameterOutTypeExtensionProvider.php
new file mode 100644
index 00000000..9ff3e465
--- /dev/null
+++ b/src/DependencyInjection/Type/ParameterOutTypeExtensionProvider.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\DependencyInjection\Type;
+return;
+
+use PHPStan\Type\FunctionParameterOutTypeExtension;
+use PHPStan\Type\MethodParameterOutTypeExtension;
+use PHPStan\Type\StaticMethodParameterOutTypeExtension;
+
+interface ParameterOutTypeExtensionProvider
+{
+
+	/** @return FunctionParameterOutTypeExtension[] */
+	public function getFunctionParameterOutTypeExtensions(): array;
+
+	/** @return MethodParameterOutTypeExtension[] */
+	public function getMethodParameterOutTypeExtensions(): array;
+
+	/** @return StaticMethodParameterOutTypeExtension[] */
+	public function getStaticMethodParameterOutTypeExtensions(): array;
+
+}
diff --git a/src/DependencyInjection/ValidateExcludePathsExtension.php b/src/DependencyInjection/ValidateExcludePathsExtension.php
new file mode 100644
index 00000000..df81e009
--- /dev/null
+++ b/src/DependencyInjection/ValidateExcludePathsExtension.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Nette\DI\CompilerExtension;
+use PHPStan\DependencyInjection\Neon\OptionalPath;
+use PHPStan\File\FileExcluder;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function count;
+use function is_dir;
+use function is_file;
+use function sprintf;
+
+final class ValidateExcludePathsExtension extends CompilerExtension
+{
+
+	/**
+	 * @throws InvalidExcludePathsException
+	 */
+	public function loadConfiguration(): void
+	{
+		$builder = $this->getContainerBuilder();
+		$excludePaths = $builder->parameters['excludePaths'];
+		if ($excludePaths === null) {
+			return;
+		}
+
+		$errors = [];
+		if ($builder->parameters['__validate']) {
+			$paths = [];
+			if (array_key_exists('analyse', $excludePaths)) {
+				$paths = $excludePaths['analyse'];
+			}
+			if (array_key_exists('analyseAndScan', $excludePaths)) {
+				$paths = array_merge($paths, $excludePaths['analyseAndScan']);
+			}
+			foreach ($paths as $path) {
+				if ($path instanceof OptionalPath) {
+					continue;
+				}
+				if (FileExcluder::isAbsolutePath($path)) {
+					if (is_dir($path)) {
+						continue;
+					}
+					if (is_file($path)) {
+						continue;
+					}
+				}
+				if (FileExcluder::isFnmatchPattern($path)) {
+					continue;
+				}
+
+				$errors[] = sprintf('Path %s is neither a directory, nor a file path, nor a fnmatch pattern.', $path);
+			}
+		}
+
+		$newExcludePaths = [];
+		if (array_key_exists('analyseAndScan', $excludePaths)) {
+			$newExcludePaths['analyseAndScan'] = $excludePaths['analyseAndScan'];
+		}
+		if (array_key_exists('analyse', $excludePaths)) {
+			$newExcludePaths['analyse'] = $excludePaths['analyse'];
+		}
+
+		foreach ($newExcludePaths as $key => $p) {
+			$newExcludePaths[$key] = array_map(
+				static fn ($path) => $path instanceof OptionalPath ? $path->path : $path,
+				$p,
+			);
+		}
+
+		$builder->parameters['excludePaths'] = $newExcludePaths;
+
+		if (count($errors) === 0) {
+			return;
+		}
+
+		throw new InvalidExcludePathsException($errors);
+	}
+
+}
diff --git a/src/DependencyInjection/ValidateIgnoredErrorsExtension.php b/src/DependencyInjection/ValidateIgnoredErrorsExtension.php
new file mode 100644
index 00000000..048fcf3f
--- /dev/null
+++ b/src/DependencyInjection/ValidateIgnoredErrorsExtension.php
@@ -0,0 +1,227 @@
+<?php 
+
+namespace PHPStan\DependencyInjection;
+return;
+
+use Hoa\Compiler\Llk\Llk;
+use Hoa\File\Read;
+use Nette\DI\CompilerExtension;
+use Nette\Utils\RegexpException;
+use Nette\Utils\Strings;
+use PHPStan\Analyser\ConstantResolver;
+use PHPStan\Analyser\NameScope;
+use PHPStan\Command\IgnoredRegexValidator;
+use PHPStan\DependencyInjection\Type\OperatorTypeSpecifyingExtensionRegistryProvider;
+use PHPStan\File\FileExcluder;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\DirectTypeNodeResolverExtensionRegistryProvider;
+use PHPStan\PhpDoc\TypeNodeResolver;
+use PHPStan\PhpDoc\TypeNodeResolverExtensionRegistry;
+use PHPStan\PhpDoc\TypeStringResolver;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\ConstExprParser;
+use PHPStan\PhpDocParser\Parser\TypeParser;
+use PHPStan\PhpDocParser\ParserConfig;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\PhpVersionStaticAccessor;
+use PHPStan\Reflection\ReflectionProvider\DirectReflectionProviderProvider;
+use PHPStan\Reflection\ReflectionProvider\DummyReflectionProvider;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Type\Constant\OversizedArrayBuilder;
+use PHPStan\Type\DirectTypeAliasResolverProvider;
+use PHPStan\Type\OperatorTypeSpecifyingExtensionRegistry;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeAliasResolver;
+use function array_keys;
+use function array_map;
+use function count;
+use function implode;
+use function is_array;
+use function is_dir;
+use function is_file;
+use function sprintf;
+use const PHP_VERSION_ID;
+
+final class ValidateIgnoredErrorsExtension extends CompilerExtension
+{
+
+	/**
+	 * @throws InvalidIgnoredErrorPatternsException
+	 */
+	public function loadConfiguration(): void
+	{
+		$builder = $this->getContainerBuilder();
+		if (!$builder->parameters['__validate']) {
+			return;
+		}
+
+		$ignoreErrors = $builder->parameters['ignoreErrors'];
+		if (count($ignoreErrors) === 0) {
+			return;
+		}
+
+		/** @throws void */
+		$parser = Llk::load(new Read(__DIR__ . '/../../resources/RegexGrammar.pp'));
+		$reflectionProvider = new DummyReflectionProvider();
+		$reflectionProviderProvider = new DirectReflectionProviderProvider($reflectionProvider);
+		ReflectionProviderStaticAccessor::registerInstance($reflectionProvider);
+		PhpVersionStaticAccessor::registerInstance(new PhpVersion(PHP_VERSION_ID));
+		$composerPhpVersionFactory = new ComposerPhpVersionFactory([]);
+		$constantResolver = new ConstantResolver($reflectionProviderProvider, [], null, $composerPhpVersionFactory);
+
+		$phpDocParserConfig = new ParserConfig([]);
+		$ignoredRegexValidator = new IgnoredRegexValidator(
+			$parser,
+			new TypeStringResolver(
+				new Lexer($phpDocParserConfig),
+				new TypeParser($phpDocParserConfig, new ConstExprParser($phpDocParserConfig)),
+				new TypeNodeResolver(
+					new DirectTypeNodeResolverExtensionRegistryProvider(
+						new class implements TypeNodeResolverExtensionRegistry {
+
+							public function getExtensions(): array
+							{
+								return [];
+							}
+
+						},
+					),
+					$reflectionProviderProvider,
+					new DirectTypeAliasResolverProvider(new class implements TypeAliasResolver {
+
+						public function hasTypeAlias(string $aliasName, ?string $classNameScope): bool
+						{
+							return false;
+						}
+
+						public function resolveTypeAlias(string $aliasName, NameScope $nameScope): ?Type
+						{
+							return null;
+						}
+
+					}),
+					$constantResolver,
+					new InitializerExprTypeResolver($constantResolver, $reflectionProviderProvider, new PhpVersion(PHP_VERSION_ID), new class implements OperatorTypeSpecifyingExtensionRegistryProvider {
+
+						public function getRegistry(): OperatorTypeSpecifyingExtensionRegistry
+						{
+							return new OperatorTypeSpecifyingExtensionRegistry([]);
+						}
+
+					}, new OversizedArrayBuilder(), true),
+				),
+			),
+		);
+
+		$errors = [];
+		foreach ($ignoreErrors as $ignoreError) {
+			if (is_array($ignoreError)) {
+				if (isset($ignoreError['count'])) {
+					continue; // ignoreError coming from baseline will be correct
+				}
+				if (isset($ignoreError['messages'])) {
+					$ignoreMessages = $ignoreError['messages'];
+				} elseif (isset($ignoreError['message'])) {
+					$ignoreMessages = [$ignoreError['message']];
+				} else {
+					continue;
+				}
+			} else {
+				$ignoreMessages = [$ignoreError];
+			}
+
+			foreach ($ignoreMessages as $ignoreMessage) {
+				$error = $this->validateMessage($ignoredRegexValidator, $ignoreMessage);
+				if ($error === null) {
+					continue;
+				}
+				$errors[] = $error;
+			}
+		}
+
+		$reportUnmatched = (bool) $builder->parameters['reportUnmatchedIgnoredErrors'];
+
+		if ($reportUnmatched) {
+			foreach ($ignoreErrors as $ignoreError) {
+				if (!is_array($ignoreError)) {
+					continue;
+				}
+
+				if (isset($ignoreError['path'])) {
+					$ignorePaths = [$ignoreError['path']];
+				} elseif (isset($ignoreError['paths'])) {
+					$ignorePaths = $ignoreError['paths'];
+				} else {
+					continue;
+				}
+
+				foreach ($ignorePaths as $ignorePath) {
+					if (FileExcluder::isAbsolutePath($ignorePath)) {
+						if (is_dir($ignorePath)) {
+							continue;
+						}
+						if (is_file($ignorePath)) {
+							continue;
+						}
+					}
+					if (FileExcluder::isFnmatchPattern($ignorePath)) {
+						continue;
+					}
+
+					$errors[] = sprintf('Path %s is neither a directory, nor a file path, nor a fnmatch pattern.', $ignorePath);
+				}
+			}
+		}
+
+		if (count($errors) === 0) {
+			return;
+		}
+
+		throw new InvalidIgnoredErrorPatternsException($errors);
+	}
+
+	private function validateMessage(IgnoredRegexValidator $ignoredRegexValidator, string $ignoreMessage): ?string
+	{
+		try {
+			Strings::match('', $ignoreMessage);
+			$validationResult = $ignoredRegexValidator->validate($ignoreMessage);
+			$ignoredTypes = $validationResult->getIgnoredTypes();
+			if (count($ignoredTypes) > 0) {
+				return $this->createIgnoredTypesError($ignoreMessage, $ignoredTypes);
+			}
+
+			if ($validationResult->hasAnchorsInTheMiddle()) {
+				return $this->createAnchorInTheMiddleError($ignoreMessage);
+			}
+
+			if ($validationResult->areAllErrorsIgnored()) {
+				return sprintf("Ignored error %s has an unescaped '%s' which leads to ignoring all errors. Use '%s' instead.", $ignoreMessage, $validationResult->getWrongSequence(), $validationResult->getEscapedWrongSequence());
+			}
+		} catch (RegexpException $e) {
+			return $e->getMessage();
+		}
+		return null;
+	}
+
+	/**
+	 * @param array<string, string> $ignoredTypes
+	 */
+	private function createIgnoredTypesError(string $regex, array $ignoredTypes): string
+	{
+		return sprintf(
+			"Ignored error %s has an unescaped '|' which leads to ignoring more errors than intended. Use '\\|' instead.\n%s",
+			$regex,
+			sprintf(
+				"It ignores all errors containing the following types:\n%s",
+				implode("\n", array_map(static fn (string $typeDescription): string => sprintf('* %s', $typeDescription), array_keys($ignoredTypes))),
+			),
+		);
+	}
+
+	private function createAnchorInTheMiddleError(string $regex): string
+	{
+		return sprintf("Ignored error %s has an unescaped anchor '$' in the middle. This leads to unintended behavior. Use '\\$' instead.", $regex);
+	}
+
+}
diff --git a/src/Diagnose/DiagnoseExtension.php b/src/Diagnose/DiagnoseExtension.php
new file mode 100644
index 00000000..792a3206
--- /dev/null
+++ b/src/Diagnose/DiagnoseExtension.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Diagnose;
+return;
+
+use PHPStan\Command\Output;
+
+/**
+ * DiagnoseExtension can output any diagnostic information to stderr after analysis.
+ *
+ * PHPStan displays this information when running the "analyse" command with "-vvv" CLI option.
+ *
+ * To register it in the configuration file use the `phpstan.diagnoseExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.diagnoseExtension
+ * ```
+ *
+ * @api
+ */
+interface DiagnoseExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.diagnoseExtension';
+
+	public function print(Output $output): void;
+
+}
diff --git a/src/Diagnose/PHPStanDiagnoseExtension.php b/src/Diagnose/PHPStanDiagnoseExtension.php
new file mode 100644
index 00000000..1f29f84b
--- /dev/null
+++ b/src/Diagnose/PHPStanDiagnoseExtension.php
@@ -0,0 +1,209 @@
+<?php 
+
+namespace PHPStan\Diagnose;
+return;
+
+use Phar;
+use PHPStan\Command\Output;
+use PHPStan\ExtensionInstaller\GeneratedConfig;
+use PHPStan\File\FileHelper;
+use PHPStan\Internal\ComposerHelper;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Php\PhpVersion;
+use ReflectionClass;
+use function array_key_exists;
+use function array_slice;
+use function class_exists;
+use function count;
+use function dirname;
+use function explode;
+use function implode;
+use function in_array;
+use function is_array;
+use function is_file;
+use function is_readable;
+use function sprintf;
+use function str_starts_with;
+use function strlen;
+use function substr;
+use const PHP_VERSION_ID;
+
+final class PHPStanDiagnoseExtension implements DiagnoseExtension
+{
+
+	/**
+	 * @param int|array{min: int, max: int}|null $configPhpVersion
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string [] $allConfigFiles
+	 */
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private int|array|null $configPhpVersion,
+		private FileHelper $fileHelper,
+		private array $composerAutoloaderProjectPaths,
+		private array $allConfigFiles,
+		private ComposerPhpVersionFactory $composerPhpVersionFactory,
+	)
+	{
+	}
+
+	public function print(Output $output): void
+	{
+		$phpRuntimeVersion = new PhpVersion(PHP_VERSION_ID);
+		$output->writeLineFormatted(sprintf(
+			'<info>PHP runtime version:</info> %s',
+			$phpRuntimeVersion->getVersionString(),
+		));
+
+		if (
+			$this->phpVersion->getSource() === PhpVersion::SOURCE_CONFIG
+			&& is_array($this->configPhpVersion)
+		) {
+			$minVersion = new PhpVersion($this->configPhpVersion['min']);
+			$maxVersion = new PhpVersion($this->configPhpVersion['max']);
+
+			$output->writeLineFormatted(sprintf(
+				'<info>PHP version for analysis:</info> %s-%s (from %s)',
+				$minVersion->getVersionString(),
+				$maxVersion->getVersionString(),
+				$this->phpVersion->getSourceLabel(),
+			));
+
+		} else {
+			$minComposerPhpVersion = $this->composerPhpVersionFactory->getMinVersion();
+			$maxComposerPhpVersion = $this->composerPhpVersionFactory->getMaxVersion();
+			if ($minComposerPhpVersion !== null && $maxComposerPhpVersion !== null) {
+				if ($minComposerPhpVersion->getVersionId() !== $maxComposerPhpVersion->getVersionId()) {
+					$output->writeLineFormatted(sprintf(
+						'<info>PHP composer.json required version:</info> %s-%s',
+						$minComposerPhpVersion->getVersionString(),
+						$maxComposerPhpVersion->getVersionString(),
+					));
+				} else {
+					$output->writeLineFormatted(sprintf(
+						'<info>PHP composer.json required version:</info> %s',
+						$minComposerPhpVersion->getVersionString(),
+					));
+				}
+			}
+
+			$output->writeLineFormatted(sprintf(
+				'<info>PHP version for analysis:</info> %s (from %s)',
+				$this->phpVersion->getVersionString(),
+				$this->phpVersion->getSourceLabel(),
+			));
+		}
+		$output->writeLineFormatted('');
+
+		$output->writeLineFormatted(sprintf(
+			'<info>PHPStan version:</info> %s',
+			ComposerHelper::getPhpStanVersion(),
+		));
+		$output->writeLineFormatted('<info>PHPStan running from:</info>');
+		$pharRunning = Phar::running(false);
+		if ($pharRunning !== '') {
+			$output->writeLineFormatted(dirname($pharRunning));
+		} else {
+			if (isset($_SERVER['argv'][0]) && is_file($_SERVER['argv'][0])) {
+				$output->writeLineFormatted($_SERVER['argv'][0]);
+			} else {
+				$output->writeLineFormatted('Unknown');
+			}
+		}
+		$output->writeLineFormatted('');
+
+		$configFilesFromExtensionInstaller = [];
+		if (class_exists('PHPStan\ExtensionInstaller\GeneratedConfig')) {
+			$output->writeLineFormatted('<info>Extension installer:</info>');
+			if (count(GeneratedConfig::EXTENSIONS) === 0) {
+				$output->writeLineFormatted('No extensions installed');
+			}
+
+			$generatedConfigReflection = new ReflectionClass('PHPStan\ExtensionInstaller\GeneratedConfig');
+			$generatedConfigDirectory = dirname($generatedConfigReflection->getFileName());
+			foreach (GeneratedConfig::EXTENSIONS as $name => $extensionConfig) {
+				$output->writeLineFormatted(sprintf('%s: %s', $name, $extensionConfig['version'] ?? 'Unknown version'));
+				foreach ($extensionConfig['extra']['includes'] ?? [] as $includedFile) {
+					$includedFilePath = null;
+					if (isset($extensionConfig['relative_install_path'])) {
+						$includedFilePath = sprintf('%s/%s/%s', $generatedConfigDirectory, $extensionConfig['relative_install_path'], $includedFile);
+						if (!is_file($includedFilePath) || !is_readable($includedFilePath)) {
+							$includedFilePath = null;
+						}
+					}
+
+					if ($includedFilePath === null) {
+						$includedFilePath = sprintf('%s/%s', $extensionConfig['install_path'], $includedFile);
+					}
+
+					$configFilesFromExtensionInstaller[] = $this->fileHelper->normalizePath($includedFilePath, '/');
+				}
+			}
+		} else {
+			$output->writeLineFormatted('<info>Extension installer:</info> Not installed');
+		}
+		$output->writeLineFormatted('');
+
+		$thirdPartyIncludedConfigs = [];
+		foreach ($this->allConfigFiles as $configFile) {
+			$configFile = $this->fileHelper->normalizePath($configFile, '/');
+			if (in_array($configFile, $configFilesFromExtensionInstaller, true)) {
+				continue;
+			}
+			foreach ($this->composerAutoloaderProjectPaths as $composerAutoloaderProjectPath) {
+				$composerConfig = ComposerHelper::getComposerConfig($composerAutoloaderProjectPath);
+				if ($composerConfig === null) {
+					continue;
+				}
+				$vendorDir = $this->fileHelper->normalizePath(ComposerHelper::getVendorDirFromComposerConfig($composerAutoloaderProjectPath, $composerConfig), '/');
+				if (!str_starts_with($configFile, $vendorDir)) {
+					continue;
+				}
+
+				$installedPath = $vendorDir . '/composer/installed.php';
+				if (!is_file($installedPath)) {
+					continue;
+				}
+
+				$installed = require $installedPath;
+
+				$trimmed = substr($configFile, strlen($vendorDir) + 1);
+				$parts = explode('/', $trimmed);
+				$package = implode('/', array_slice($parts, 0, 2));
+				$configPath = implode('/', array_slice($parts, 2));
+				if (!array_key_exists($package, $installed['versions'])) {
+					continue;
+				}
+
+				$packageVersion = $installed['versions'][$package]['pretty_version'] ?? null;
+				if ($packageVersion === null) {
+					continue;
+				}
+
+				$thirdPartyIncludedConfigs[] = [$package, $packageVersion, $configPath];
+			}
+		}
+
+		if (count($thirdPartyIncludedConfigs) > 0) {
+			$output->writeLineFormatted('<info>Included configs from Composer packages:</info>');
+			foreach ($thirdPartyIncludedConfigs as [$package, $packageVersion, $configPath]) {
+				$output->writeLineFormatted(sprintf('%s (%s): %s', $package, $configPath, $packageVersion));
+			}
+			$output->writeLineFormatted('');
+		}
+
+		$composerAutoloaderProjectPathsCount = count($this->composerAutoloaderProjectPaths);
+		$output->writeLineFormatted(sprintf(
+			'<info>Discovered Composer project %s:</info>',
+			$composerAutoloaderProjectPathsCount === 1 ? 'root' : 'roots',
+		));
+		if ($composerAutoloaderProjectPathsCount === 0) {
+			$output->writeLineFormatted('None');
+		}
+		foreach ($this->composerAutoloaderProjectPaths as $composerAutoloaderProjectPath) {
+			$output->writeLineFormatted($composerAutoloaderProjectPath);
+		}
+		$output->writeLineFormatted('');
+	}
+
+}
diff --git a/src/File/CouldNotReadFileException.php b/src/File/CouldNotReadFileException.php
new file mode 100644
index 00000000..69b4757a
--- /dev/null
+++ b/src/File/CouldNotReadFileException.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class CouldNotReadFileException extends AnalysedCodeException
+{
+
+	public function __construct(string $fileName)
+	{
+		parent::__construct(sprintf('Could not read file: %s', $fileName));
+	}
+
+	public function getTip(): ?string
+	{
+		return null;
+	}
+
+}
diff --git a/src/File/CouldNotWriteFileException.php b/src/File/CouldNotWriteFileException.php
new file mode 100644
index 00000000..b6a60049
--- /dev/null
+++ b/src/File/CouldNotWriteFileException.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use PHPStan\AnalysedCodeException;
+use function sprintf;
+
+final class CouldNotWriteFileException extends AnalysedCodeException
+{
+
+	public function __construct(string $fileName, string $error)
+	{
+		parent::__construct(sprintf('Could not write file: %s (%s)', $fileName, $error));
+	}
+
+	public function getTip(): ?string
+	{
+		return null;
+	}
+
+}
diff --git a/src/File/FileExcluder.php b/src/File/FileExcluder.php
new file mode 100644
index 00000000..419ea40e
--- /dev/null
+++ b/src/File/FileExcluder.php
@@ -0,0 +1,137 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function fnmatch;
+use function in_array;
+use function is_dir;
+use function is_file;
+use function preg_match;
+use function str_starts_with;
+use function strlen;
+use function substr;
+use const DIRECTORY_SEPARATOR;
+use const FNM_CASEFOLD;
+use const FNM_NOESCAPE;
+
+final class FileExcluder
+{
+
+	/**
+	 * Paths to exclude from analysing
+	 *
+	 * @var string[]
+	 */
+	private array $literalAnalyseExcludes = [];
+
+	/**
+	 * Directories to exclude from analysing
+	 *
+	 * @var string[]
+	 */
+	private array $literalAnalyseDirectoryExcludes = [];
+
+	/**
+	 * Files to exclude from analysing
+	 *
+	 * @var string[]
+	 */
+	private array $literalAnalyseFilesExcludes = [];
+
+	/**
+	 * fnmatch() patterns to use for excluding files and directories from analysing
+	 * @var string[]
+	 */
+	private array $fnmatchAnalyseExcludes = [];
+
+	private int $fnmatchFlags;
+
+	/**
+	 * @param string[] $analyseExcludes
+	 */
+	public function __construct(
+		private FileHelper $fileHelper,
+		array $analyseExcludes,
+	)
+	{
+		foreach ($analyseExcludes as $exclude) {
+			$len = strlen($exclude);
+			$trailingDirSeparator = ($len > 0 && in_array($exclude[$len - 1], ['\\', '/'], true));
+
+			$normalized = $fileHelper->normalizePath($exclude);
+
+			if ($trailingDirSeparator) {
+				$normalized .= DIRECTORY_SEPARATOR;
+			}
+
+			if (self::isFnmatchPattern($normalized)) {
+				$this->fnmatchAnalyseExcludes[] = $normalized;
+			} else {
+				if (is_file($normalized)) {
+					$this->literalAnalyseFilesExcludes[] = $normalized;
+				} elseif (is_dir($normalized)) {
+					if (!$trailingDirSeparator) {
+						$normalized .= DIRECTORY_SEPARATOR;
+					}
+
+					$this->literalAnalyseDirectoryExcludes[] = $normalized;
+				}
+			}
+		}
+
+		$isWindows = DIRECTORY_SEPARATOR === '\\';
+		if ($isWindows) {
+			$this->fnmatchFlags = FNM_NOESCAPE | FNM_CASEFOLD;
+		} else {
+			$this->fnmatchFlags = 0;
+		}
+	}
+
+	public function isExcludedFromAnalysing(string $file): bool
+	{
+		$file = $this->fileHelper->normalizePath($file);
+
+		foreach ($this->literalAnalyseExcludes as $exclude) {
+			if (str_starts_with($file, $exclude)) {
+				return true;
+			}
+		}
+		foreach ($this->literalAnalyseDirectoryExcludes as $exclude) {
+			if (str_starts_with($file, $exclude)) {
+				return true;
+			}
+		}
+		foreach ($this->literalAnalyseFilesExcludes as $exclude) {
+			if ($file === $exclude) {
+				return true;
+			}
+		}
+		foreach ($this->fnmatchAnalyseExcludes as $exclude) {
+			if (fnmatch($exclude, $file, $this->fnmatchFlags)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public static function isAbsolutePath(string $path): bool
+	{
+		if (DIRECTORY_SEPARATOR === '/') {
+			if (str_starts_with($path, '/')) {
+				return true;
+			}
+		} elseif (substr($path, 1, 1) === ':') {
+			return true;
+		}
+
+		return false;
+	}
+
+	public static function isFnmatchPattern(string $path): bool
+	{
+		return preg_match('~[*?[\]]~', $path) > 0;
+	}
+
+}
diff --git a/src/File/FileExcluderFactory.php b/src/File/FileExcluderFactory.php
new file mode 100644
index 00000000..8030609e
--- /dev/null
+++ b/src/File/FileExcluderFactory.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function array_key_exists;
+use function array_merge;
+use function array_unique;
+use function array_values;
+
+final class FileExcluderFactory
+{
+
+	/**
+	 * @param array{analyse?: array<int, string>, analyseAndScan?: array<int, string>} $excludePaths
+	 */
+	public function __construct(
+		private FileExcluderRawFactory $fileExcluderRawFactory,
+		private array $excludePaths,
+	)
+	{
+	}
+
+	public function createAnalyseFileExcluder(): FileExcluder
+	{
+		$paths = [];
+		if (array_key_exists('analyse', $this->excludePaths)) {
+			$paths = $this->excludePaths['analyse'];
+		}
+		if (array_key_exists('analyseAndScan', $this->excludePaths)) {
+			$paths = array_merge($paths, $this->excludePaths['analyseAndScan']);
+		}
+
+		return $this->fileExcluderRawFactory->create(array_values(array_unique($paths)));
+	}
+
+	public function createScanFileExcluder(): FileExcluder
+	{
+		$paths = [];
+		if (array_key_exists('analyseAndScan', $this->excludePaths)) {
+			$paths = $this->excludePaths['analyseAndScan'];
+		}
+
+		return $this->fileExcluderRawFactory->create(array_values(array_unique($paths)));
+	}
+
+}
diff --git a/src/File/FileExcluderRawFactory.php b/src/File/FileExcluderRawFactory.php
new file mode 100644
index 00000000..6c35ef8a
--- /dev/null
+++ b/src/File/FileExcluderRawFactory.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+interface FileExcluderRawFactory
+{
+
+	/**
+	 * @param string[] $analyseExcludes
+	 */
+	public function create(
+		array $analyseExcludes,
+	): FileExcluder;
+
+}
diff --git a/src/File/FileFinder.php b/src/File/FileFinder.php
new file mode 100644
index 00000000..7e9a6d08
--- /dev/null
+++ b/src/File/FileFinder.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use Symfony\Component\Finder\Finder;
+use function array_filter;
+use function array_unique;
+use function array_values;
+use function file_exists;
+use function implode;
+use function is_file;
+
+final class FileFinder
+{
+
+	/**
+	 * @param string[] $fileExtensions
+	 */
+	public function __construct(
+		private FileExcluder $fileExcluder,
+		private FileHelper $fileHelper,
+		private array $fileExtensions,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $paths
+	 */
+	public function findFiles(array $paths): FileFinderResult
+	{
+		$onlyFiles = true;
+		$files = [];
+		foreach ($paths as $path) {
+			if (is_file($path)) {
+				$files[] = $this->fileHelper->normalizePath($path);
+			} elseif (!file_exists($path)) {
+				throw new PathNotFoundException($path);
+			} else {
+				$finder = new Finder();
+				$finder->followLinks();
+				foreach ($finder->files()->name('*.{' . implode(',', $this->fileExtensions) . '}')->in($path) as $fileInfo) {
+					$files[] = $this->fileHelper->normalizePath($fileInfo->getPathname());
+					$onlyFiles = false;
+				}
+			}
+		}
+
+		$files = array_values(array_unique(array_filter($files, fn (string $file): bool => !$this->fileExcluder->isExcludedFromAnalysing($file))));
+
+		return new FileFinderResult($files, $onlyFiles);
+	}
+
+}
diff --git a/src/File/FileFinderResult.php b/src/File/FileFinderResult.php
new file mode 100644
index 00000000..30f4f389
--- /dev/null
+++ b/src/File/FileFinderResult.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+final class FileFinderResult
+{
+
+	/**
+	 * @param string[] $files
+	 */
+	public function __construct(private array $files, private bool $onlyFiles)
+	{
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getFiles(): array
+	{
+		return $this->files;
+	}
+
+	public function isOnlyFiles(): bool
+	{
+		return $this->onlyFiles;
+	}
+
+}
diff --git a/src/File/FileHelper.php b/src/File/FileHelper.php
new file mode 100644
index 00000000..8209635a
--- /dev/null
+++ b/src/File/FileHelper.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use Nette\Utils\Strings;
+use function array_pop;
+use function explode;
+use function implode;
+use function ltrim;
+use function preg_match;
+use function rtrim;
+use function str_ends_with;
+use function str_replace;
+use function str_starts_with;
+use function strlen;
+use function strtolower;
+use function substr;
+use function trim;
+use const DIRECTORY_SEPARATOR;
+
+final class FileHelper
+{
+
+	private string $workingDirectory;
+
+	public function __construct(string $workingDirectory)
+	{
+		$this->workingDirectory = $this->normalizePath($workingDirectory);
+	}
+
+	public function getWorkingDirectory(): string
+	{
+		return $this->workingDirectory;
+	}
+
+	/** @api */
+	public function absolutizePath(string $path): string
+	{
+		if (DIRECTORY_SEPARATOR === '/') {
+			if (str_starts_with($path, '/')) {
+				return $path;
+			}
+		} elseif (substr($path, 1, 1) === ':') {
+			return $path;
+		}
+
+		if (preg_match('~^[a-z0-9+\-.]+://~i', $path) === 1) {
+			return $path;
+		}
+
+		return rtrim($this->getWorkingDirectory(), '/\\') . DIRECTORY_SEPARATOR . ltrim($path, '/\\');
+	}
+
+	/** @api */
+	public function normalizePath(string $originalPath, string $directorySeparator = DIRECTORY_SEPARATOR): string
+	{
+		$isLocalPath = false;
+		if ($originalPath !== '') {
+			if ($originalPath[0] === '/') {
+				$isLocalPath = true;
+			} elseif (strlen($originalPath) >= 3 && $originalPath[1] === ':' && $originalPath[2] === '\\') { // e.g. C:\
+				$isLocalPath = true;
+			}
+		}
+
+		$matches = null;
+		if (!$isLocalPath) {
+			$matches = Strings::match($originalPath, '~^([a-z0-9+\-.]+)://(.+)$~is');
+		}
+
+		if ($matches !== null) {
+			[, $scheme, $path] = $matches;
+			$scheme = strtolower($scheme);
+		} else {
+			$scheme = null;
+			$path = $originalPath;
+		}
+
+		$path = str_replace(['\\', '//', '///', '////'], '/', $path);
+
+		$pathRoot = str_starts_with($path, '/') ? $directorySeparator : '';
+		$pathParts = explode('/', trim($path, '/'));
+
+		$normalizedPathParts = [];
+		foreach ($pathParts as $pathPart) {
+			if ($pathPart === '.') {
+				continue;
+			}
+			if ($pathPart === '..') {
+				$removedPart = array_pop($normalizedPathParts);
+				if ($scheme === 'phar' && $removedPart !== null && str_ends_with($removedPart, '.phar')) {
+					$scheme = null;
+				}
+			} else {
+				$normalizedPathParts[] = $pathPart;
+			}
+		}
+
+		return ($scheme !== null ? $scheme . '://' : '') . $pathRoot . implode($directorySeparator, $normalizedPathParts);
+	}
+
+}
diff --git a/src/File/FileMonitor.php b/src/File/FileMonitor.php
new file mode 100644
index 00000000..1cf2a208
--- /dev/null
+++ b/src/File/FileMonitor.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function array_keys;
+use function count;
+use function sha1_file;
+
+final class FileMonitor
+{
+
+	/** @var array<string, string>|null */
+	private ?array $fileHashes = null;
+
+	/** @var array<string>|null */
+	private ?array $paths = null;
+
+	public function __construct(private FileFinder $fileFinder)
+	{
+	}
+
+	/**
+	 * @param array<string> $paths
+	 */
+	public function initialize(array $paths): void
+	{
+		$finderResult = $this->fileFinder->findFiles($paths);
+		$fileHashes = [];
+		foreach ($finderResult->getFiles() as $filePath) {
+			$fileHashes[$filePath] = $this->getFileHash($filePath);
+		}
+
+		$this->fileHashes = $fileHashes;
+		$this->paths = $paths;
+	}
+
+	public function getChanges(): FileMonitorResult
+	{
+		if ($this->fileHashes === null || $this->paths === null) {
+			throw new ShouldNotHappenException();
+		}
+		$finderResult = $this->fileFinder->findFiles($this->paths);
+		$oldFileHashes = $this->fileHashes;
+		$fileHashes = [];
+		$newFiles = [];
+		$changedFiles = [];
+		$deletedFiles = [];
+		foreach ($finderResult->getFiles() as $filePath) {
+			if (!array_key_exists($filePath, $oldFileHashes)) {
+				$newFiles[] = $filePath;
+				$fileHashes[$filePath] = $this->getFileHash($filePath);
+				continue;
+			}
+
+			$oldHash = $oldFileHashes[$filePath];
+			unset($oldFileHashes[$filePath]);
+			$newHash = $this->getFileHash($filePath);
+			$fileHashes[$filePath] = $newHash;
+			if ($oldHash === $newHash) {
+				continue;
+			}
+
+			$changedFiles[] = $filePath;
+		}
+
+		$this->fileHashes = $fileHashes;
+
+		foreach (array_keys($oldFileHashes) as $file) {
+			$deletedFiles[] = $file;
+		}
+
+		return new FileMonitorResult(
+			$newFiles,
+			$changedFiles,
+			$deletedFiles,
+			count($fileHashes),
+		);
+	}
+
+	private function getFileHash(string $filePath): string
+	{
+		$hash = sha1_file($filePath);
+
+		if ($hash === false) {
+			throw new CouldNotReadFileException($filePath);
+		}
+
+		return $hash;
+	}
+
+}
diff --git a/src/File/FileMonitorResult.php b/src/File/FileMonitorResult.php
new file mode 100644
index 00000000..677899f7
--- /dev/null
+++ b/src/File/FileMonitorResult.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function count;
+
+final class FileMonitorResult
+{
+
+	/**
+	 * @param string[] $newFiles
+	 * @param string[] $changedFiles
+	 * @param string[] $deletedFiles
+	 */
+	public function __construct(
+		private array $newFiles,
+		private array $changedFiles,
+		private array $deletedFiles,
+		private int $totalFilesCount,
+	)
+	{
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getChangedFiles(): array
+	{
+		return $this->changedFiles;
+	}
+
+	public function hasAnyChanges(): bool
+	{
+		return count($this->newFiles) > 0
+			|| count($this->changedFiles) > 0
+			|| count($this->deletedFiles) > 0;
+	}
+
+	public function getTotalFilesCount(): int
+	{
+		return $this->totalFilesCount;
+	}
+
+}
diff --git a/src/File/FileReader.php b/src/File/FileReader.php
new file mode 100644
index 00000000..029a1587
--- /dev/null
+++ b/src/File/FileReader.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function file_get_contents;
+use function stream_resolve_include_path;
+
+final class FileReader
+{
+
+	/**
+	 * @throws CouldNotReadFileException
+	 */
+	public static function read(string $fileName): string
+	{
+		$path = $fileName;
+
+		$contents = @file_get_contents($path);
+		if ($contents === false) {
+			$path = stream_resolve_include_path($fileName);
+
+			if ($path === false) {
+				throw new CouldNotReadFileException($fileName);
+			}
+
+			$contents = @file_get_contents($path);
+		}
+
+		if ($contents === false) {
+			throw new CouldNotReadFileException($fileName);
+		}
+
+		return $contents;
+	}
+
+}
diff --git a/src/File/FileWriter.php b/src/File/FileWriter.php
new file mode 100644
index 00000000..375b9fb0
--- /dev/null
+++ b/src/File/FileWriter.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function error_get_last;
+use function file_put_contents;
+
+final class FileWriter
+{
+
+	public static function write(string $fileName, string $contents): void
+	{
+		$success = @file_put_contents($fileName, $contents);
+		if ($success === false) {
+			$error = error_get_last();
+
+			throw new CouldNotWriteFileException(
+				$fileName,
+				$error !== null ? $error['message'] : 'unknown cause',
+			);
+		}
+	}
+
+}
diff --git a/src/File/FuzzyRelativePathHelper.php b/src/File/FuzzyRelativePathHelper.php
new file mode 100644
index 00000000..ea5ee722
--- /dev/null
+++ b/src/File/FuzzyRelativePathHelper.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function count;
+use function explode;
+use function implode;
+use function in_array;
+use function ltrim;
+use function realpath;
+use function str_ends_with;
+use function str_starts_with;
+use function strlen;
+use function substr;
+use const DIRECTORY_SEPARATOR;
+
+final class FuzzyRelativePathHelper implements RelativePathHelper
+{
+
+	private string $directorySeparator;
+
+	private ?string $pathToTrim = null;
+
+	/**
+	 * @param string[] $analysedPaths
+	 * @param non-empty-string|null $directorySeparator
+	 */
+	public function __construct(
+		private RelativePathHelper $fallbackRelativePathHelper,
+		string $currentWorkingDirectory,
+		array $analysedPaths,
+		?string $directorySeparator = null,
+	)
+	{
+		if ($directorySeparator === null) {
+			$directorySeparator = DIRECTORY_SEPARATOR;
+		}
+
+		$this->directorySeparator = $directorySeparator;
+		$pathBeginning = null;
+		$pathToTrimArray = null;
+		$trimBeginning = static function (string $path): array {
+			if (str_starts_with($path, '/')) {
+				return [
+					'/',
+					substr($path, 1),
+				];
+			} elseif (substr($path, 1, 1) === ':') {
+				return [
+					substr($path, 0, 3),
+					substr($path, 3),
+				];
+			}
+
+			return ['', $path];
+		};
+
+		if (
+			!in_array($currentWorkingDirectory, ['', '/'], true)
+			&& !(strlen($currentWorkingDirectory) === 3 && substr($currentWorkingDirectory, 1, 1) === ':')
+		) {
+			[$pathBeginning, $currentWorkingDirectory] = $trimBeginning($currentWorkingDirectory);
+
+			$pathToTrimArray = explode($directorySeparator, $currentWorkingDirectory);
+		}
+		foreach ($analysedPaths as $pathNumber => $path) {
+			[$tempPathBeginning, $path] = $trimBeginning($path);
+
+			$pathArray = explode($directorySeparator, $path);
+			$pathTempParts = [];
+			$pathArraySize = count($pathArray);
+			foreach ($pathArray as $i => $pathPart) {
+				if ($i === $pathArraySize - 1 && str_ends_with($pathPart, '.php')) {
+					continue;
+				}
+				if (!isset($pathToTrimArray[$i])) {
+					if ($pathNumber !== 0) {
+						$pathToTrimArray = $pathTempParts;
+						continue 2;
+					}
+				} elseif ($pathToTrimArray[$i] !== $pathPart) {
+					$pathToTrimArray = $pathTempParts;
+					continue 2;
+				}
+
+				$pathTempParts[] = $pathPart;
+			}
+
+			$pathBeginning = $tempPathBeginning;
+			$pathToTrimArray = $pathTempParts;
+		}
+
+		if ($pathToTrimArray === null || count($pathToTrimArray) === 0) {
+			return;
+		}
+
+		$pathToTrim = $pathBeginning . implode($directorySeparator, $pathToTrimArray);
+		$realPathToTrim = realpath($pathToTrim);
+		if ($realPathToTrim !== false) {
+			$pathToTrim = $realPathToTrim;
+		}
+
+		$this->pathToTrim = $pathToTrim;
+	}
+
+	public function getRelativePath(string $filename): string
+	{
+		if (
+			$this->pathToTrim !== null
+			&& str_starts_with($filename, $this->pathToTrim)
+		) {
+			return ltrim(substr($filename, strlen($this->pathToTrim)), $this->directorySeparator);
+		}
+
+		return $this->fallbackRelativePathHelper->getRelativePath($filename);
+	}
+
+}
diff --git a/src/File/NullRelativePathHelper.php b/src/File/NullRelativePathHelper.php
new file mode 100644
index 00000000..9429f118
--- /dev/null
+++ b/src/File/NullRelativePathHelper.php
@@ -0,0 +1,14 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+final class NullRelativePathHelper implements RelativePathHelper
+{
+
+	public function getRelativePath(string $filename): string
+	{
+		return $filename;
+	}
+
+}
diff --git a/src/File/ParentDirectoryRelativePathHelper.php b/src/File/ParentDirectoryRelativePathHelper.php
new file mode 100644
index 00000000..b7835edd
--- /dev/null
+++ b/src/File/ParentDirectoryRelativePathHelper.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use function array_fill;
+use function array_merge;
+use function array_slice;
+use function count;
+use function explode;
+use function implode;
+use function str_replace;
+use function strpos;
+use function substr;
+use function trim;
+
+final class ParentDirectoryRelativePathHelper implements RelativePathHelper
+{
+
+	public function __construct(private string $parentDirectory)
+	{
+	}
+
+	public function getRelativePath(string $filename): string
+	{
+		return implode('/', $this->getFilenameParts($filename));
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getFilenameParts(string $filename): array
+	{
+		$schemePosition = strpos($filename, '://');
+		if ($schemePosition !== false) {
+			$filename = substr($filename, $schemePosition + 3);
+		}
+		$parentParts = explode('/', trim(str_replace('\\', '/', $this->parentDirectory), '/'));
+		$parentPartsCount = count($parentParts);
+		$filenameParts = explode('/', trim(str_replace('\\', '/', $filename), '/'));
+		$filenamePartsCount = count($filenameParts);
+
+		$i = 0;
+		for (; $i < $filenamePartsCount; $i++) {
+			if ($parentPartsCount < $i + 1) {
+				break;
+			}
+
+			$parentPath = implode('/', array_slice($parentParts, 0, $i + 1));
+			$filenamePath = implode('/', array_slice($filenameParts, 0, $i + 1));
+
+			if ($parentPath !== $filenamePath) {
+				break;
+			}
+		}
+
+		if ($i === 0) {
+			return [$filename];
+		}
+
+		$dotsCount = $parentPartsCount - $i;
+
+		if ($dotsCount < 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		return array_merge(array_fill(0, $dotsCount, '..'), array_slice($filenameParts, $i));
+	}
+
+}
diff --git a/src/File/PathNotFoundException.php b/src/File/PathNotFoundException.php
new file mode 100644
index 00000000..fd30f95a
--- /dev/null
+++ b/src/File/PathNotFoundException.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use Exception;
+use function sprintf;
+
+final class PathNotFoundException extends Exception
+{
+
+	public function __construct(private string $path)
+	{
+		parent::__construct(sprintf('Path %s does not exist', $path));
+	}
+
+	public function getPath(): string
+	{
+		return $this->path;
+	}
+
+}
diff --git a/src/File/RelativePathHelper.php b/src/File/RelativePathHelper.php
new file mode 100644
index 00000000..3bcf7cdb
--- /dev/null
+++ b/src/File/RelativePathHelper.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+/** @api */
+interface RelativePathHelper
+{
+
+	public function getRelativePath(string $filename): string;
+
+}
diff --git a/src/File/SimpleRelativePathHelper.php b/src/File/SimpleRelativePathHelper.php
new file mode 100644
index 00000000..5727a416
--- /dev/null
+++ b/src/File/SimpleRelativePathHelper.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function str_replace;
+use function str_starts_with;
+use function strlen;
+use function substr;
+
+final class SimpleRelativePathHelper implements RelativePathHelper
+{
+
+	public function __construct(private string $currentWorkingDirectory)
+	{
+	}
+
+	public function getRelativePath(string $filename): string
+	{
+		if ($this->currentWorkingDirectory !== '' && str_starts_with($filename, $this->currentWorkingDirectory)) {
+			return str_replace('\\', '/', substr($filename, strlen($this->currentWorkingDirectory) + 1));
+		}
+
+		return str_replace('\\', '/', $filename);
+	}
+
+}
diff --git a/src/File/SystemAgnosticSimpleRelativePathHelper.php b/src/File/SystemAgnosticSimpleRelativePathHelper.php
new file mode 100644
index 00000000..b0f312e8
--- /dev/null
+++ b/src/File/SystemAgnosticSimpleRelativePathHelper.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\File;
+return;
+
+use function str_starts_with;
+use function strlen;
+use function substr;
+
+final class SystemAgnosticSimpleRelativePathHelper implements RelativePathHelper
+{
+
+	public function __construct(private FileHelper $fileHelper)
+	{
+	}
+
+	public function getRelativePath(string $filename): string
+	{
+		$cwd = $this->fileHelper->getWorkingDirectory();
+		if ($cwd !== '' && str_starts_with($filename, $cwd)) {
+			return substr($filename, strlen($cwd) + 1);
+		}
+
+		return $filename;
+	}
+
+}
diff --git a/src/Internal/BytesHelper.php b/src/Internal/BytesHelper.php
new file mode 100644
index 00000000..a6847ad2
--- /dev/null
+++ b/src/Internal/BytesHelper.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use function abs;
+use function end;
+use function round;
+
+final class BytesHelper
+{
+
+	public static function bytes(int $bytes): string
+	{
+		$bytes = round($bytes);
+		$units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB'];
+		foreach ($units as $unit) {
+			if (abs($bytes) < 1024 || $unit === end($units)) {
+				break;
+			}
+			$bytes /= 1024;
+		}
+
+		if (!isset($unit)) {
+			throw new ShouldNotHappenException();
+		}
+
+		return round($bytes, 2) . ' ' . $unit;
+	}
+
+}
diff --git a/src/Internal/CombinationsHelper.php b/src/Internal/CombinationsHelper.php
new file mode 100644
index 00000000..d9b62b7d
--- /dev/null
+++ b/src/Internal/CombinationsHelper.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use function array_shift;
+
+final class CombinationsHelper
+{
+
+	/**
+	 * @param array<mixed> $arrays
+	 * @return iterable<mixed>
+	 */
+	public static function combinations(array $arrays): iterable
+	{
+		// from https://stackoverflow.com/a/70800936/565782 by Arnaud Le Blanc
+		if ($arrays === []) {
+			yield [];
+			return;
+		}
+
+		$head = array_shift($arrays);
+
+		foreach ($head as $elem) {
+			foreach (self::combinations($arrays) as $combination) {
+				$comb = [$elem];
+				foreach ($combination as $c) {
+					$comb[] = $c;
+				}
+				yield $comb;
+			}
+		}
+	}
+
+}
diff --git a/src/Internal/ComposerHelper.php b/src/Internal/ComposerHelper.php
new file mode 100644
index 00000000..f512ef45
--- /dev/null
+++ b/src/Internal/ComposerHelper.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\FileReader;
+use function basename;
+use function getenv;
+use function is_file;
+use function is_string;
+use function preg_match;
+use function substr;
+use function trim;
+
+final class ComposerHelper
+{
+
+	public const UNKNOWN_VERSION = 'Unknown version';
+
+	private static ?string $phpstanVersion = null;
+
+	/** @return array<string, mixed>|null */
+	public static function getComposerConfig(string $root): ?array
+	{
+		$composerJsonPath = self::getComposerJsonPath($root);
+
+		if (!is_file($composerJsonPath)) {
+			return null;
+		}
+
+		try {
+			$composerJsonContents = FileReader::read($composerJsonPath);
+
+			return Json::decode($composerJsonContents, Json::FORCE_ARRAY);
+		} catch (CouldNotReadFileException | JsonException) {
+			return null;
+		}
+	}
+
+	private static function getComposerJsonPath(string $root): string
+	{
+		$envComposer = getenv('COMPOSER');
+		$fileName = is_string($envComposer) ? $envComposer : 'composer.json';
+		$fileName = basename(trim($fileName));
+
+		return $root . '/' . $fileName;
+	}
+
+	/**
+	 * @param array<string, mixed> $composerConfig
+	 */
+	public static function getVendorDirFromComposerConfig(string $root, array $composerConfig): string
+	{
+		$vendorDirectory = $composerConfig['config']['vendor-dir'] ?? 'vendor';
+
+		return $root . '/' . trim($vendorDirectory, '/');
+	}
+
+	/**
+	 * @param array<string, mixed> $composerConfig
+	 */
+	public static function getBinDirFromComposerConfig(string $root, array $composerConfig): string
+	{
+		$vendorDirectory = $composerConfig['config']['bin-dir'] ?? 'vendor/bin';
+
+		return $root . '/' . trim($vendorDirectory, '/');
+	}
+
+	public static function getPhpStanVersion(): string
+	{
+		if (self::$phpstanVersion !== null) {
+			return self::$phpstanVersion;
+		}
+
+		$installed = require __DIR__ . '/../../vendor/composer/installed.php';
+		$rootPackage = $installed['root'] ?? null;
+		if ($rootPackage === null) {
+			return self::$phpstanVersion = self::UNKNOWN_VERSION;
+		}
+
+		if (preg_match('/[^v\d.]/', $rootPackage['pretty_version']) === 0) {
+			// Handles tagged versions, see https://github.com/Jean85/pretty-package-versions/blob/2.0.5/src/Version.php#L31
+			return self::$phpstanVersion = $rootPackage['pretty_version'];
+		}
+
+		return self::$phpstanVersion = $rootPackage['pretty_version'] . '@' . substr((string) $rootPackage['reference'], 0, 7);
+	}
+
+}
diff --git a/src/Internal/DeprecatedAttributeHelper.php b/src/Internal/DeprecatedAttributeHelper.php
new file mode 100644
index 00000000..d74ab74a
--- /dev/null
+++ b/src/Internal/DeprecatedAttributeHelper.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use PHPStan\BetterReflection\Reflection\Attribute\ReflectionAttributeHelper;
+use PHPStan\BetterReflection\Reflection\ReflectionAttribute;
+use function is_int;
+use function is_string;
+
+final class DeprecatedAttributeHelper
+{
+
+	/**
+	 * @param list<ReflectionAttribute> $attributes
+	 */
+	public static function getDeprecatedDescription(array $attributes): ?string
+	{
+		$deprecated = ReflectionAttributeHelper::filterAttributesByName($attributes, 'Deprecated');
+		foreach ($deprecated as $attr) {
+			$arguments = $attr->getArguments();
+			foreach ($arguments as $i => $arg) {
+				if (!is_string($arg)) {
+					continue;
+				}
+
+				if (is_int($i)) {
+					if ($i !== 0) {
+						continue;
+					}
+
+					return $arg;
+				}
+
+				if ($i !== 'message') {
+					continue;
+				}
+
+				return $arg;
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Internal/DirectoryCreator.php b/src/Internal/DirectoryCreator.php
new file mode 100644
index 00000000..2cf1543a
--- /dev/null
+++ b/src/Internal/DirectoryCreator.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use function clearstatcache;
+use function is_dir;
+use function mkdir;
+
+final class DirectoryCreator
+{
+
+	/**
+	 * @throws DirectoryCreatorException if unable to create directory.
+	 */
+	public static function ensureDirectoryExists(
+		string $directory,
+		int $mode = 0755,
+		bool $recursive = true,
+	): void
+	{
+		if (is_dir($directory)) {
+			return;
+		}
+
+		if (@mkdir($directory, $mode, $recursive)) {
+			return;
+		}
+
+		clearstatcache();
+
+		if (!is_dir($directory)) {
+			throw new DirectoryCreatorException($directory);
+		}
+	}
+
+}
diff --git a/src/Internal/DirectoryCreatorException.php b/src/Internal/DirectoryCreatorException.php
new file mode 100644
index 00000000..91bab4e7
--- /dev/null
+++ b/src/Internal/DirectoryCreatorException.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use Exception;
+use function error_get_last;
+use function is_null;
+use function sprintf;
+
+final class DirectoryCreatorException extends Exception
+{
+
+	public function __construct(public readonly string $directory)
+	{
+		$error = error_get_last();
+
+		parent::__construct(sprintf(
+			'Failed to create directory "%s" (%s).',
+			$directory,
+			is_null($error) ? 'unknown cause' : $error['message'],
+		));
+	}
+
+}
diff --git a/src/Internal/SprintfHelper.php b/src/Internal/SprintfHelper.php
new file mode 100644
index 00000000..6643d89e
--- /dev/null
+++ b/src/Internal/SprintfHelper.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Internal;
+return;
+
+use function str_replace;
+
+final class SprintfHelper
+{
+
+	public static function escapeFormatString(string $format): string
+	{
+		return str_replace('%', '%%', $format);
+	}
+
+}
diff --git a/src/Node/AnonymousClassNode.php b/src/Node/AnonymousClassNode.php
new file mode 100644
index 00000000..5a698918
--- /dev/null
+++ b/src/Node/AnonymousClassNode.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\Class_;
+
+/**
+ * The only purpose of this is to fix {@see Class_::isAnonymous()}, broken by us giving anonymous classes a name.
+ */
+final class AnonymousClassNode extends Class_
+{
+
+	public static function createFromClassNode(Class_ $node): self
+	{
+		$subNodes = [];
+		foreach ($node->getSubNodeNames() as $subNodeName) {
+			$subNodes[$subNodeName] = $node->$subNodeName;
+		}
+
+		return new AnonymousClassNode(
+			$node->name,
+			$subNodes,
+			$node->getAttributes(),
+		);
+	}
+
+	public function isAnonymous(): bool
+	{
+		return true;
+	}
+
+}
diff --git a/src/Node/BooleanAndNode.php b/src/Node/BooleanAndNode.php
new file mode 100644
index 00000000..4256bec8
--- /dev/null
+++ b/src/Node/BooleanAndNode.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
+use PhpParser\Node\Expr\BinaryOp\LogicalAnd;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class BooleanAndNode extends Expr implements VirtualNode
+{
+
+	public function __construct(private BooleanAnd|LogicalAnd $originalNode, private Scope $rightScope)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	/**
+	 * @return BooleanAnd|LogicalAnd
+	 */
+	public function getOriginalNode()
+	{
+		return $this->originalNode;
+	}
+
+	public function getRightScope(): Scope
+	{
+		return $this->rightScope;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_BooleanAndNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/BooleanOrNode.php b/src/Node/BooleanOrNode.php
new file mode 100644
index 00000000..f1cc8397
--- /dev/null
+++ b/src/Node/BooleanOrNode.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\BinaryOp\BooleanOr;
+use PhpParser\Node\Expr\BinaryOp\LogicalOr;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class BooleanOrNode extends Expr implements VirtualNode
+{
+
+	public function __construct(private BooleanOr|LogicalOr $originalNode, private Scope $rightScope)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	/**
+	 * @return BooleanOr|LogicalOr
+	 */
+	public function getOriginalNode()
+	{
+		return $this->originalNode;
+	}
+
+	public function getRightScope(): Scope
+	{
+		return $this->rightScope;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_BooleanOrNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/BreaklessWhileLoopNode.php b/src/Node/BreaklessWhileLoopNode.php
new file mode 100644
index 00000000..0189011f
--- /dev/null
+++ b/src/Node/BreaklessWhileLoopNode.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\While_;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\StatementExitPoint;
+
+/**
+ * @api
+ */
+final class BreaklessWhileLoopNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param StatementExitPoint[] $exitPoints
+	 */
+	public function __construct(private While_ $originalNode, private array $exitPoints)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getOriginalNode(): While_
+	{
+		return $this->originalNode;
+	}
+
+	/**
+	 * @return StatementExitPoint[]
+	 */
+	public function getExitPoints(): array
+	{
+		return $this->exitPoints;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_BreaklessWhileLoop';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/CatchWithUnthrownExceptionNode.php b/src/Node/CatchWithUnthrownExceptionNode.php
new file mode 100644
index 00000000..61db9576
--- /dev/null
+++ b/src/Node/CatchWithUnthrownExceptionNode.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\Catch_;
+use PhpParser\NodeAbstract;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class CatchWithUnthrownExceptionNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(private Catch_ $originalNode, private Type $caughtType, private Type $originalCaughtType)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getOriginalNode(): Catch_
+	{
+		return $this->originalNode;
+	}
+
+	public function getCaughtType(): Type
+	{
+		return $this->caughtType;
+	}
+
+	public function getOriginalCaughtType(): Type
+	{
+		return $this->originalCaughtType;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_CatchWithUnthrownExceptionNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/ClassConstantsNode.php b/src/Node/ClassConstantsNode.php
new file mode 100644
index 00000000..6a492187
--- /dev/null
+++ b/src/Node/ClassConstantsNode.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\ClassLike;
+use PhpParser\NodeAbstract;
+use PHPStan\Node\Constant\ClassConstantFetch;
+use PHPStan\Reflection\ClassReflection;
+
+/**
+ * @api
+ */
+final class ClassConstantsNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param ClassConst[] $constants
+	 * @param ClassConstantFetch[] $fetches
+	 */
+	public function __construct(private ClassLike $class, private array $constants, private array $fetches, private ClassReflection $classReflection)
+	{
+		parent::__construct($class->getAttributes());
+	}
+
+	public function getClass(): ClassLike
+	{
+		return $this->class;
+	}
+
+	/**
+	 * @return ClassConst[]
+	 */
+	public function getConstants(): array
+	{
+		return $this->constants;
+	}
+
+	/**
+	 * @return ClassConstantFetch[]
+	 */
+	public function getFetches(): array
+	{
+		return $this->fetches;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClassConstantsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+}
diff --git a/src/Node/ClassMethod.php b/src/Node/ClassMethod.php
new file mode 100644
index 00000000..68eb377f
--- /dev/null
+++ b/src/Node/ClassMethod.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+/**
+ * @api
+ */
+final class ClassMethod
+{
+
+	public function __construct(
+		private \PhpParser\Node\Stmt\ClassMethod $node,
+		private bool $isDeclaredInTrait,
+	)
+	{
+	}
+
+	public function getNode(): \PhpParser\Node\Stmt\ClassMethod
+	{
+		return $this->node;
+	}
+
+	public function isDeclaredInTrait(): bool
+	{
+		return $this->isDeclaredInTrait;
+	}
+
+}
diff --git a/src/Node/ClassMethodsNode.php b/src/Node/ClassMethodsNode.php
new file mode 100644
index 00000000..5830b89c
--- /dev/null
+++ b/src/Node/ClassMethodsNode.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PhpParser\NodeAbstract;
+use PHPStan\Node\Method\MethodCall;
+use PHPStan\Reflection\ClassReflection;
+
+/**
+ * @api
+ */
+final class ClassMethodsNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param ClassMethod[] $methods
+	 * @param array<int, MethodCall> $methodCalls
+	 */
+	public function __construct(private ClassLike $class, private array $methods, private array $methodCalls, private ClassReflection $classReflection)
+	{
+		parent::__construct($class->getAttributes());
+	}
+
+	public function getClass(): ClassLike
+	{
+		return $this->class;
+	}
+
+	/**
+	 * @return ClassMethod[]
+	 */
+	public function getMethods(): array
+	{
+		return $this->methods;
+	}
+
+	/**
+	 * @return array<int, MethodCall>
+	 */
+	public function getMethodCalls(): array
+	{
+		return $this->methodCalls;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClassMethodsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+}
diff --git a/src/Node/ClassPropertiesNode.php b/src/Node/ClassPropertiesNode.php
new file mode 100644
index 00000000..9abd7ca9
--- /dev/null
+++ b/src/Node/ClassPropertiesNode.php
@@ -0,0 +1,416 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassLike;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\PropertyInitializationExpr;
+use PHPStan\Node\Method\MethodCall;
+use PHPStan\Node\Property\PropertyAssign;
+use PHPStan\Node\Property\PropertyRead;
+use PHPStan\Node\Property\PropertyWrite;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\TypeUtils;
+use function array_diff_key;
+use function array_key_exists;
+use function array_keys;
+use function in_array;
+use function strtolower;
+
+/**
+ * @api
+ */
+final class ClassPropertiesNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param ClassPropertyNode[] $properties
+	 * @param array<int, PropertyRead|PropertyWrite> $propertyUsages
+	 * @param array<int, MethodCall> $methodCalls
+	 * @param array<string, MethodReturnStatementsNode> $returnStatementNodes
+	 * @param list<PropertyAssign> $propertyAssigns
+	 */
+	public function __construct(
+		private ClassLike $class,
+		private ReadWritePropertiesExtensionProvider $readWritePropertiesExtensionProvider,
+		private array $properties,
+		private array $propertyUsages,
+		private array $methodCalls,
+		private array $returnStatementNodes,
+		private array $propertyAssigns,
+		private ClassReflection $classReflection,
+	)
+	{
+		parent::__construct($class->getAttributes());
+	}
+
+	public function getClass(): ClassLike
+	{
+		return $this->class;
+	}
+
+	/**
+	 * @return ClassPropertyNode[]
+	 */
+	public function getProperties(): array
+	{
+		return $this->properties;
+	}
+
+	/**
+	 * @return array<int, PropertyRead|PropertyWrite>
+	 */
+	public function getPropertyUsages(): array
+	{
+		return $this->propertyUsages;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClassPropertiesNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	/**
+	 * @param string[] $constructors
+	 * @return array{array<string, ClassPropertyNode>, array<array{string, int, ClassPropertyNode, string, string}>, array<array{string, int, ClassPropertyNode}>}
+	 */
+	public function getUninitializedProperties(
+		Scope $scope,
+		array $constructors,
+	): array
+	{
+		if (!$this->getClass() instanceof Class_) {
+			return [[], [], []];
+		}
+		$classReflection = $this->getClassReflection();
+
+		$uninitializedProperties = [];
+		$originalProperties = [];
+		$initialInitializedProperties = [];
+		$initializedProperties = [];
+		$extensions = $this->readWritePropertiesExtensionProvider->getExtensions();
+		$initializedViaExtension = [];
+		foreach ($this->getProperties() as $property) {
+			if ($property->isStatic()) {
+				continue;
+			}
+			if ($property->isAbstract()) {
+				continue;
+			}
+			if ($property->getNativeType() === null) {
+				continue;
+			}
+			if ($property->getDefault() !== null) {
+				continue;
+			}
+			$originalProperties[$property->getName()] = $property;
+			$is = TrinaryLogic::createFromBoolean($property->isPromoted() && !$property->isPromotedFromTrait());
+			if (!$is->yes() && $classReflection->hasNativeProperty($property->getName())) {
+				$propertyReflection = $classReflection->getNativeProperty($property->getName());
+				if ($propertyReflection->isVirtual()->yes()) {
+					continue;
+				}
+
+				foreach ($extensions as $extension) {
+					if (!$extension->isInitialized($propertyReflection, $property->getName())) {
+						continue;
+					}
+					$is = TrinaryLogic::createYes();
+					$initializedViaExtension[$property->getName()] = true;
+					break;
+				}
+			}
+			$initialInitializedProperties[$property->getName()] = $is;
+			foreach ($constructors as $constructor) {
+				$initializedProperties[$constructor][$property->getName()] = $is;
+			}
+			if ($is->yes()) {
+				continue;
+			}
+			$uninitializedProperties[$property->getName()] = $property;
+		}
+
+		if ($constructors === []) {
+			return [$uninitializedProperties, [], []];
+		}
+
+		$initializedInConstructor = [];
+		if ($classReflection->hasConstructor()) {
+			$initializedInConstructor = array_diff_key($uninitializedProperties, $this->collectUninitializedProperties([$classReflection->getConstructor()->getName()], $uninitializedProperties));
+		}
+
+		$methodsCalledFromConstructor = $this->getMethodsCalledFromConstructor($classReflection, $initialInitializedProperties, $initializedProperties, $constructors, $initializedInConstructor);
+		$prematureAccess = [];
+		$additionalAssigns = [];
+
+		foreach ($this->getPropertyUsages() as $usage) {
+			$fetch = $usage->getFetch();
+			if (!$fetch instanceof PropertyFetch) {
+				continue;
+			}
+			$usageScope = $usage->getScope();
+			if ($usageScope->getFunction() === null) {
+				continue;
+			}
+			$function = $usageScope->getFunction();
+			if (!$function instanceof MethodReflection) {
+				continue;
+			}
+			if ($function->getDeclaringClass()->getName() !== $classReflection->getName()) {
+				continue;
+			}
+			if (!array_key_exists($function->getName(), $methodsCalledFromConstructor)) {
+				continue;
+			}
+
+			$initializedPropertiesMap = $methodsCalledFromConstructor[$function->getName()];
+
+			if (!$fetch->name instanceof Identifier) {
+				continue;
+			}
+			$propertyName = $fetch->name->toString();
+			$fetchedOnType = $usageScope->getType($fetch->var);
+			if (TypeUtils::findThisType($fetchedOnType) === null) {
+				continue;
+			}
+
+			$propertyReflection = $usageScope->getPropertyReflection($fetchedOnType, $propertyName);
+			if ($propertyReflection === null) {
+				continue;
+			}
+			if ($propertyReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+				continue;
+			}
+
+			if ($usage instanceof PropertyWrite) {
+				if (array_key_exists($propertyName, $initializedPropertiesMap)) {
+					$hasInitialization = $initializedPropertiesMap[$propertyName]->or($usageScope->hasExpressionType(new PropertyInitializationExpr($propertyName)));
+					if (
+						!$hasInitialization->no()
+						&& !$usage->isPromotedPropertyWrite()
+						&& !array_key_exists($propertyName, $initializedViaExtension)
+					) {
+						$additionalAssigns[] = [
+							$propertyName,
+							$fetch->getStartLine(),
+							$originalProperties[$propertyName],
+						];
+					}
+				}
+			} elseif (array_key_exists($propertyName, $initializedPropertiesMap)) {
+				if (
+					strtolower($function->getName()) !== '__construct'
+					&& array_key_exists($propertyName, $initializedInConstructor)
+					&& in_array($function->getName(), $constructors, true)
+				) {
+					continue;
+				}
+				$hasInitialization = $initializedPropertiesMap[$propertyName]->or($usageScope->hasExpressionType(new PropertyInitializationExpr($propertyName)));
+				if (!$hasInitialization->yes() && $usageScope->isInAnonymousFunction() && $usageScope->getParentScope() !== null) {
+					$hasInitialization = $hasInitialization->or($usageScope->getParentScope()->hasExpressionType(new PropertyInitializationExpr($propertyName)));
+				}
+				if (!$hasInitialization->yes()) {
+					$prematureAccess[] = [
+						$propertyName,
+						$fetch->getStartLine(),
+						$originalProperties[$propertyName],
+						$usageScope->getFile(),
+						$usageScope->getFileDescription(),
+					];
+				}
+			}
+		}
+
+		return [
+			$this->collectUninitializedProperties(array_keys($methodsCalledFromConstructor), $uninitializedProperties),
+			$prematureAccess,
+			$additionalAssigns,
+		];
+	}
+
+	/**
+	 * @param list<string> $constructors
+	 * @param array<string, ClassPropertyNode> $uninitializedProperties
+	 * @return array<string, ClassPropertyNode>
+	 */
+	private function collectUninitializedProperties(array $constructors, array $uninitializedProperties): array
+	{
+		foreach ($constructors as $constructor) {
+			$lowerConstructorName = strtolower($constructor);
+			if (!array_key_exists($lowerConstructorName, $this->returnStatementNodes)) {
+				continue;
+			}
+
+			$returnStatementsNode = $this->returnStatementNodes[$lowerConstructorName];
+			$methodScope = null;
+			foreach ($returnStatementsNode->getExecutionEnds() as $executionEnd) {
+				$statementResult = $executionEnd->getStatementResult();
+				$endNode = $executionEnd->getNode();
+				if ($statementResult->isAlwaysTerminating()) {
+					if ($endNode instanceof Node\Stmt\Expression) {
+						$exprType = $statementResult->getScope()->getType($endNode->expr);
+						if ($exprType instanceof NeverType && $exprType->isExplicit()) {
+							continue;
+						}
+					}
+				}
+				if ($methodScope === null) {
+					$methodScope = $statementResult->getScope();
+					continue;
+				}
+
+				$methodScope = $methodScope->mergeWith($statementResult->getScope());
+			}
+
+			foreach ($returnStatementsNode->getReturnStatements() as $returnStatement) {
+				if ($methodScope === null) {
+					$methodScope = $returnStatement->getScope();
+					continue;
+				}
+				$methodScope = $methodScope->mergeWith($returnStatement->getScope());
+			}
+
+			if ($methodScope === null) {
+				continue;
+			}
+
+			foreach (array_keys($uninitializedProperties) as $propertyName) {
+				if (!$methodScope->hasExpressionType(new PropertyInitializationExpr($propertyName))->yes()) {
+					continue;
+				}
+
+				unset($uninitializedProperties[$propertyName]);
+			}
+		}
+
+		return $uninitializedProperties;
+	}
+
+	/**
+	 * @param string[] $methods
+	 * @param array<string, TrinaryLogic> $initialInitializedProperties
+	 * @param array<string, array<string, TrinaryLogic>> $initializedProperties
+	 * @param array<string, ClassPropertyNode> $initializedInConstructorProperties
+	 *
+	 * @return array<string, array<string, TrinaryLogic>>
+	 */
+	private function getMethodsCalledFromConstructor(
+		ClassReflection $classReflection,
+		array $initialInitializedProperties,
+		array $initializedProperties,
+		array $methods,
+		array $initializedInConstructorProperties,
+	): array
+	{
+		$originalMap = $initializedProperties;
+		$originalMethods = $methods;
+
+		foreach ($this->methodCalls as $methodCall) {
+			$methodCallNode = $methodCall->getNode();
+			if ($methodCallNode instanceof Array_) {
+				continue;
+			}
+			if (!$methodCallNode->name instanceof Identifier) {
+				continue;
+			}
+			$callScope = $methodCall->getScope();
+			if ($methodCallNode instanceof Node\Expr\MethodCall) {
+				$calledOnType = $callScope->getType($methodCallNode->var);
+			} else {
+				if (!$methodCallNode->class instanceof Name) {
+					continue;
+				}
+
+				$calledOnType = $callScope->resolveTypeByName($methodCallNode->class);
+			}
+
+			if (TypeUtils::findThisType($calledOnType) === null) {
+				continue;
+			}
+
+			$inMethod = $callScope->getFunction();
+			if (!$inMethod instanceof MethodReflection) {
+				continue;
+			}
+			if (!in_array($inMethod->getName(), $methods, true)) {
+				continue;
+			}
+
+			if ($inMethod->getName() !== '__construct') {
+				foreach ($initializedInConstructorProperties as $propertyName => $propertyNode) {
+					$initializedProperties[$inMethod->getName()][$propertyName] = TrinaryLogic::createYes();
+				}
+			}
+
+			$methodName = $methodCallNode->name->toString();
+			if (array_key_exists($methodName, $initializedProperties)) {
+				foreach ($this->getInitializedProperties($callScope, $initializedProperties[$inMethod->getName()] ?? $initialInitializedProperties) as $propertyName => $isInitialized) {
+					$initializedProperties[$methodName][$propertyName] = $initializedProperties[$methodName][$propertyName]->and($isInitialized);
+				}
+				continue;
+			}
+			$methodReflection = $callScope->getMethodReflection($calledOnType, $methodName);
+			if ($methodReflection === null) {
+				continue;
+			}
+			if ($methodReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+				continue;
+			}
+			$initializedProperties[$methodName] = $this->getInitializedProperties($callScope, $initializedProperties[$inMethod->getName()] ?? $initialInitializedProperties);
+			$methods[] = $methodName;
+		}
+
+		if ($originalMap === $initializedProperties && $originalMethods === $methods) {
+			return $initializedProperties;
+		}
+
+		return $this->getMethodsCalledFromConstructor($classReflection, $initialInitializedProperties, $initializedProperties, $methods, $initializedInConstructorProperties);
+	}
+
+	/**
+	 * @param array<string, TrinaryLogic> $initialInitializedProperties
+	 * @return array<string, TrinaryLogic>
+	 */
+	private function getInitializedProperties(Scope $scope, array $initialInitializedProperties): array
+	{
+		foreach ($initialInitializedProperties as $propertyName => $isInitialized) {
+			$initialInitializedProperties[$propertyName] = $isInitialized->or($scope->hasExpressionType(new PropertyInitializationExpr($propertyName)));
+		}
+
+		return $initialInitializedProperties;
+	}
+
+	/**
+	 * @return list<PropertyAssign>
+	 */
+	public function getPropertyAssigns(): array
+	{
+		return $this->propertyAssigns;
+	}
+
+}
diff --git a/src/Node/ClassPropertyNode.php b/src/Node/ClassPropertyNode.php
new file mode 100644
index 00000000..589ca5ba
--- /dev/null
+++ b/src/Node/ClassPropertyNode.php
@@ -0,0 +1,169 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Modifiers;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ClassPropertyNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(
+		private string $name,
+		private int $flags,
+		private ?Type $type,
+		private ?Expr $default,
+		private ?string $phpDoc,
+		private ?Type $phpDocType,
+		private bool $isPromoted,
+		private bool $isPromotedFromTrait,
+		private Node\Stmt\Property|Node\Param $originalNode,
+		private bool $isReadonlyByPhpDoc,
+		private bool $isDeclaredInTrait,
+		private bool $isReadonlyClass,
+		private bool $isAllowedPrivateMutation,
+		private ClassReflection $classReflection,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getFlags(): int
+	{
+		return $this->flags;
+	}
+
+	public function getDefault(): ?Expr
+	{
+		return $this->default;
+	}
+
+	public function isPromoted(): bool
+	{
+		return $this->isPromoted;
+	}
+
+	public function isPromotedFromTrait(): bool
+	{
+		return $this->isPromotedFromTrait;
+	}
+
+	public function getPhpDoc(): ?string
+	{
+		return $this->phpDoc;
+	}
+
+	public function getPhpDocType(): ?Type
+	{
+		return $this->phpDocType;
+	}
+
+	public function isPublic(): bool
+	{
+		return ($this->flags & Modifiers::PUBLIC) !== 0
+			|| ($this->flags & Modifiers::VISIBILITY_MASK) === 0;
+	}
+
+	public function isProtected(): bool
+	{
+		return (bool) ($this->flags & Modifiers::PROTECTED);
+	}
+
+	public function isPrivate(): bool
+	{
+		return (bool) ($this->flags & Modifiers::PRIVATE);
+	}
+
+	public function isStatic(): bool
+	{
+		return (bool) ($this->flags & Modifiers::STATIC);
+	}
+
+	public function isReadOnly(): bool
+	{
+		return (bool) ($this->flags & Modifiers::READONLY) || $this->isReadonlyClass;
+	}
+
+	public function isReadOnlyByPhpDoc(): bool
+	{
+		return $this->isReadonlyByPhpDoc;
+	}
+
+	public function isDeclaredInTrait(): bool
+	{
+		return $this->isDeclaredInTrait;
+	}
+
+	public function isAllowedPrivateMutation(): bool
+	{
+		return $this->isAllowedPrivateMutation;
+	}
+
+	public function isAbstract(): bool
+	{
+		return (bool) ($this->flags & Modifiers::ABSTRACT);
+	}
+
+	public function getNativeType(): ?Type
+	{
+		return $this->type;
+	}
+
+	/**
+	 * @return Node\Identifier|Node\Name|Node\ComplexType|null
+	 */
+	public function getNativeTypeNode()
+	{
+		return $this->originalNode->type;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClassPropertyNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	public function hasHooks(): bool
+	{
+		return $this->getHooks() !== [];
+	}
+
+	/**
+	 * @return Node\PropertyHook[]
+	 */
+	public function getHooks(): array
+	{
+		return $this->originalNode->hooks;
+	}
+
+	public function isVirtual(): bool
+	{
+		return $this->classReflection->getNativeProperty($this->name)->isVirtual()->yes();
+	}
+
+}
diff --git a/src/Node/ClassStatementsGatherer.php b/src/Node/ClassStatementsGatherer.php
new file mode 100644
index 00000000..a7d282a0
--- /dev/null
+++ b/src/Node/ClassStatementsGatherer.php
@@ -0,0 +1,294 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PhpParser\Node\Identifier;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Constant\ClassConstantFetch;
+use PHPStan\Node\Property\PropertyAssign;
+use PHPStan\Node\Property\PropertyRead;
+use PHPStan\Node\Property\PropertyWrite;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\TypeUtils;
+use ReflectionProperty;
+use function count;
+use function in_array;
+use function strtolower;
+
+final class ClassStatementsGatherer
+{
+
+	private const PROPERTY_ENUMERATING_FUNCTIONS = [
+		'get_object_vars',
+		'array_walk',
+	];
+
+	/** @var callable(Node $node, Scope $scope): void */
+	private $nodeCallback;
+
+	/** @var ClassPropertyNode[] */
+	private array $properties = [];
+
+	/** @var ClassMethod[] */
+	private array $methods = [];
+
+	/** @var \PHPStan\Node\Method\MethodCall[] */
+	private array $methodCalls = [];
+
+	/** @var array<int, PropertyWrite|PropertyRead> */
+	private array $propertyUsages = [];
+
+	/** @var Node\Stmt\ClassConst[] */
+	private array $constants = [];
+
+	/** @var ClassConstantFetch[] */
+	private array $constantFetches = [];
+
+	/** @var array<string, MethodReturnStatementsNode> */
+	private array $returnStatementNodes = [];
+
+	/** @var list<PropertyAssign> */
+	private array $propertyAssigns = [];
+
+	/**
+	 * @param callable(Node $node, Scope $scope): void $nodeCallback
+	 */
+	public function __construct(
+		private ClassReflection $classReflection,
+		callable $nodeCallback,
+	)
+	{
+		$this->nodeCallback = $nodeCallback;
+	}
+
+	/**
+	 * @return ClassPropertyNode[]
+	 */
+	public function getProperties(): array
+	{
+		return $this->properties;
+	}
+
+	/**
+	 * @return ClassMethod[]
+	 */
+	public function getMethods(): array
+	{
+		return $this->methods;
+	}
+
+	/**
+	 * @return Method\MethodCall[]
+	 */
+	public function getMethodCalls(): array
+	{
+		return $this->methodCalls;
+	}
+
+	/**
+	 * @return array<int, PropertyWrite|PropertyRead>
+	 */
+	public function getPropertyUsages(): array
+	{
+		return $this->propertyUsages;
+	}
+
+	/**
+	 * @return Node\Stmt\ClassConst[]
+	 */
+	public function getConstants(): array
+	{
+		return $this->constants;
+	}
+
+	/**
+	 * @return ClassConstantFetch[]
+	 */
+	public function getConstantFetches(): array
+	{
+		return $this->constantFetches;
+	}
+
+	/**
+	 * @return array<string, MethodReturnStatementsNode>
+	 */
+	public function getReturnStatementsNodes(): array
+	{
+		return $this->returnStatementNodes;
+	}
+
+	/**
+	 * @return list<PropertyAssign>
+	 */
+	public function getPropertyAssigns(): array
+	{
+		return $this->propertyAssigns;
+	}
+
+	public function __invoke(Node $node, Scope $scope): void
+	{
+		$nodeCallback = $this->nodeCallback;
+		$nodeCallback($node, $scope);
+		$this->gatherNodes($node, $scope);
+	}
+
+	private function gatherNodes(Node $node, Scope $scope): void
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+		if ($scope->getClassReflection()->getName() !== $this->classReflection->getName()) {
+			return;
+		}
+		if ($node instanceof ClassPropertyNode) {
+			$this->properties[] = $node;
+			if ($node->isPromoted()) {
+				$this->propertyUsages[] = new PropertyWrite(
+					new PropertyFetch(new Expr\Variable('this'), new Identifier($node->getName())),
+					$scope,
+					true,
+				);
+			}
+			return;
+		}
+		if ($node instanceof Node\Stmt\ClassMethod) {
+			$this->methods[] = new ClassMethod($node, $scope->isInTrait());
+			return;
+		}
+		if ($node instanceof Node\Stmt\ClassConst) {
+			$this->constants[] = $node;
+			return;
+		}
+		if ($node instanceof MethodCall || $node instanceof StaticCall) {
+			$this->methodCalls[] = new \PHPStan\Node\Method\MethodCall($node, $scope);
+			if ($node instanceof StaticCall && $node->name instanceof Identifier && $node->name->toLowerString() === '__construct') {
+				$this->tryToApplyPropertyWritesFromAncestorConstructor($node, $scope);
+			}
+			return;
+		}
+		if ($node instanceof MethodCallableNode || $node instanceof StaticMethodCallableNode) {
+			$this->methodCalls[] = new \PHPStan\Node\Method\MethodCall($node->getOriginalNode(), $scope);
+			return;
+		}
+		if ($node instanceof MethodReturnStatementsNode) {
+			$this->returnStatementNodes[strtolower($node->getMethodName())] = $node;
+			return;
+		}
+		if (
+			$node instanceof Expr\FuncCall
+			&& $node->name instanceof Node\Name
+			&& in_array($node->name->toLowerString(), self::PROPERTY_ENUMERATING_FUNCTIONS, true)
+		) {
+			$this->tryToApplyPropertyReads($node, $scope);
+			return;
+		}
+		if ($node instanceof Array_ && count($node->items) === 2) {
+			$this->methodCalls[] = new \PHPStan\Node\Method\MethodCall($node, $scope);
+			return;
+		}
+		if ($node instanceof Expr\ClassConstFetch) {
+			$this->constantFetches[] = new ClassConstantFetch($node, $scope);
+			return;
+		}
+		if ($node instanceof PropertyAssignNode) {
+			$this->propertyUsages[] = new PropertyWrite($node->getPropertyFetch(), $scope, false);
+			$this->propertyAssigns[] = new PropertyAssign($node, $scope);
+			return;
+		}
+		if (!$node instanceof Expr) {
+			return;
+		}
+		if ($node instanceof Expr\AssignOp\Coalesce) {
+			$this->gatherNodes($node->var, $scope);
+			return;
+		}
+		if ($node instanceof Expr\AssignRef) {
+			if (!$node->expr instanceof PropertyFetch && !$node->expr instanceof StaticPropertyFetch) {
+				$this->gatherNodes($node->expr, $scope);
+				return;
+			}
+
+			$this->propertyUsages[] = new PropertyRead($node->expr, $scope);
+			$this->propertyUsages[] = new PropertyWrite($node->expr, $scope, false);
+			return;
+		}
+		if ($node instanceof FunctionCallableNode) {
+			$node = $node->getOriginalNode();
+		} elseif ($node instanceof InstantiationCallableNode) {
+			$node = $node->getOriginalNode();
+		}
+
+		$inAssign = $scope->isInExpressionAssign($node);
+		if ($inAssign) {
+			return;
+		}
+
+		while ($node instanceof ArrayDimFetch) {
+			$node = $node->var;
+		}
+		if (!$node instanceof PropertyFetch && !$node instanceof StaticPropertyFetch) {
+			return;
+		}
+
+		$this->propertyUsages[] = new PropertyRead($node, $scope);
+	}
+
+	private function tryToApplyPropertyReads(Expr\FuncCall $node, Scope $scope): void
+	{
+		$args = $node->getArgs();
+		if (count($args) === 0) {
+			return;
+		}
+
+		$firstArgValue = $args[0]->value;
+		if (TypeUtils::findThisType($scope->getType($firstArgValue)) === null) {
+			return;
+		}
+
+		$classProperties = $this->classReflection->getNativeReflection()->getProperties();
+		foreach ($classProperties as $property) {
+			if ($property->isStatic()) {
+				continue;
+			}
+			$this->propertyUsages[] = new PropertyRead(
+				new PropertyFetch(new Expr\Variable('this'), new Identifier($property->getName())),
+				$scope,
+			);
+		}
+	}
+
+	private function tryToApplyPropertyWritesFromAncestorConstructor(StaticCall $ancestorConstructorCall, Scope $scope): void
+	{
+		if (!$ancestorConstructorCall->class instanceof Node\Name) {
+			return;
+		}
+
+		$calledOnType = $scope->resolveTypeByName($ancestorConstructorCall->class);
+		if ($calledOnType->getClassReflection() === null || TypeUtils::findThisType($calledOnType) === null) {
+			return;
+		}
+
+		$classReflection = $calledOnType->getClassReflection()->getNativeReflection();
+		foreach ($classReflection->getProperties(ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED) as $property) {
+			if (!$property->isPromoted() || $property->getDeclaringClass()->getName() !== $classReflection->getName()) {
+				continue;
+			}
+			$this->propertyUsages[] = new PropertyWrite(
+				new PropertyFetch(new Expr\Variable('this'), new Identifier($property->getName()), $ancestorConstructorCall->getAttributes()),
+				$scope,
+				false,
+			);
+		}
+	}
+
+}
diff --git a/src/Node/ClosureReturnStatementsNode.php b/src/Node/ClosureReturnStatementsNode.php
new file mode 100644
index 00000000..2bc314c0
--- /dev/null
+++ b/src/Node/ClosureReturnStatementsNode.php
@@ -0,0 +1,100 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\Node\Expr\Yield_;
+use PhpParser\Node\Expr\YieldFrom;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\StatementResult;
+use function count;
+
+/**
+ * @api
+ */
+final class ClosureReturnStatementsNode extends NodeAbstract implements ReturnStatementsNode
+{
+
+	private Node\Expr\Closure $closureExpr;
+
+	/**
+	 * @param list<ReturnStatement> $returnStatements
+	 * @param list<Yield_|YieldFrom> $yieldStatements
+	 * @param list<ExecutionEndNode> $executionEnds
+	 * @param ImpurePoint[] $impurePoints
+	 */
+	public function __construct(
+		Closure $closureExpr,
+		private array $returnStatements,
+		private array $yieldStatements,
+		private StatementResult $statementResult,
+		private array $executionEnds,
+		private array $impurePoints,
+	)
+	{
+		parent::__construct($closureExpr->getAttributes());
+		$this->closureExpr = $closureExpr;
+	}
+
+	public function getClosureExpr(): Closure
+	{
+		return $this->closureExpr;
+	}
+
+	public function hasNativeReturnTypehint(): bool
+	{
+		return $this->closureExpr->returnType !== null;
+	}
+
+	public function getReturnStatements(): array
+	{
+		return $this->returnStatements;
+	}
+
+	public function getExecutionEnds(): array
+	{
+		return $this->executionEnds;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getYieldStatements(): array
+	{
+		return $this->yieldStatements;
+	}
+
+	public function isGenerator(): bool
+	{
+		return count($this->yieldStatements) > 0;
+	}
+
+	public function getStatementResult(): StatementResult
+	{
+		return $this->statementResult;
+	}
+
+	public function returnsByRef(): bool
+	{
+		return $this->closureExpr->byRef;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClosureReturnStatementsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/CollectedDataNode.php b/src/Node/CollectedDataNode.php
new file mode 100644
index 00000000..eabaa414
--- /dev/null
+++ b/src/Node/CollectedDataNode.php
@@ -0,0 +1,74 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Collectors\Collector;
+use function array_key_exists;
+
+/**
+ * @api
+ */
+final class CollectedDataNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param CollectedData[] $collectedData
+	 */
+	public function __construct(private array $collectedData, private bool $onlyFiles)
+	{
+		parent::__construct([]);
+	}
+
+	/**
+	 * @template TCollector of Collector<Node, TValue>
+	 * @template TValue
+	 * @param class-string<TCollector> $collectorType
+	 * @return array<string, list<TValue>>
+	 */
+	public function get(string $collectorType): array
+	{
+		$result = [];
+		foreach ($this->collectedData as $collectedData) {
+			if ($collectedData->getCollectorType() !== $collectorType) {
+				continue;
+			}
+
+			$filePath = $collectedData->getFilePath();
+			if (!array_key_exists($filePath, $result)) {
+				$result[$filePath] = [];
+			}
+
+			$result[$filePath][] = $collectedData->getData();
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Indicates that only files were passed to the analyser, not directory paths.
+	 *
+	 * True being returned strongly suggests that it's a partial analysis, not full project analysis.
+	 */
+	public function isOnlyFilesAnalysis(): bool
+	{
+		return $this->onlyFiles;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_CollectedDataNode';
+	}
+
+	/**
+	 * @return array{}
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Constant/ClassConstantFetch.php b/src/Node/Constant/ClassConstantFetch.php
new file mode 100644
index 00000000..42b5870c
--- /dev/null
+++ b/src/Node/Constant/ClassConstantFetch.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Node\Constant;
+return;
+
+use PhpParser\Node\Expr\ClassConstFetch;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class ClassConstantFetch
+{
+
+	public function __construct(private ClassConstFetch $node, private Scope $scope)
+	{
+	}
+
+	public function getNode(): ClassConstFetch
+	{
+		return $this->node;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+}
diff --git a/src/Node/DoWhileLoopConditionNode.php b/src/Node/DoWhileLoopConditionNode.php
new file mode 100644
index 00000000..de6ae5c4
--- /dev/null
+++ b/src/Node/DoWhileLoopConditionNode.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\StatementExitPoint;
+
+final class DoWhileLoopConditionNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param StatementExitPoint[] $exitPoints
+	 */
+	public function __construct(private Expr $cond, private array $exitPoints)
+	{
+		parent::__construct($cond->getAttributes());
+	}
+
+	public function getCond(): Expr
+	{
+		return $this->cond;
+	}
+
+	/**
+	 * @return StatementExitPoint[]
+	 */
+	public function getExitPoints(): array
+	{
+		return $this->exitPoints;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ClosureReturnStatementsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/ExecutionEndNode.php b/src/Node/ExecutionEndNode.php
new file mode 100644
index 00000000..6919842b
--- /dev/null
+++ b/src/Node/ExecutionEndNode.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\StatementResult;
+
+/**
+ * @api
+ */
+final class ExecutionEndNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(
+		private Node\Stmt $node,
+		private StatementResult $statementResult,
+		private bool $hasNativeReturnTypehint,
+	)
+	{
+		parent::__construct($node->getAttributes());
+	}
+
+	public function getNode(): Node\Stmt
+	{
+		return $this->node;
+	}
+
+	public function getStatementResult(): StatementResult
+	{
+		return $this->statementResult;
+	}
+
+	public function hasNativeReturnTypehint(): bool
+	{
+		return $this->hasNativeReturnTypehint;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ExecutionEndNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/AlwaysRememberedExpr.php b/src/Node/Expr/AlwaysRememberedExpr.php
new file mode 100644
index 00000000..a0079472
--- /dev/null
+++ b/src/Node/Expr/AlwaysRememberedExpr.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+use PHPStan\Type\Type;
+
+final class AlwaysRememberedExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(public Expr $expr, private Type $type, private Type $nativeType)
+	{
+		parent::__construct([]);
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getExprType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getNativeExprType(): Type
+	{
+		return $this->nativeType;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_AlwaysRememberedExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return ['expr'];
+	}
+
+}
diff --git a/src/Node/Expr/ExistingArrayDimFetch.php b/src/Node/Expr/ExistingArrayDimFetch.php
new file mode 100644
index 00000000..015091b5
--- /dev/null
+++ b/src/Node/Expr/ExistingArrayDimFetch.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class ExistingArrayDimFetch extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $var, private Expr $dim)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	public function getDim(): Expr
+	{
+		return $this->dim;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ExistingArrayDimFetch';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/GetIterableKeyTypeExpr.php b/src/Node/Expr/GetIterableKeyTypeExpr.php
new file mode 100644
index 00000000..140f1dd6
--- /dev/null
+++ b/src/Node/Expr/GetIterableKeyTypeExpr.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class GetIterableKeyTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $expr)
+	{
+		parent::__construct([]);
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_GetIterableKeyTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/GetIterableValueTypeExpr.php b/src/Node/Expr/GetIterableValueTypeExpr.php
new file mode 100644
index 00000000..956ef698
--- /dev/null
+++ b/src/Node/Expr/GetIterableValueTypeExpr.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class GetIterableValueTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $expr)
+	{
+		parent::__construct([]);
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_GetIterableValueTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/GetOffsetValueTypeExpr.php b/src/Node/Expr/GetOffsetValueTypeExpr.php
new file mode 100644
index 00000000..cea922da
--- /dev/null
+++ b/src/Node/Expr/GetOffsetValueTypeExpr.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class GetOffsetValueTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $var, private Expr $dim)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	public function getDim(): Expr
+	{
+		return $this->dim;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_GetOffsetValueTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/OriginalPropertyTypeExpr.php b/src/Node/Expr/OriginalPropertyTypeExpr.php
new file mode 100644
index 00000000..3ff0c66b
--- /dev/null
+++ b/src/Node/Expr/OriginalPropertyTypeExpr.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class OriginalPropertyTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr\PropertyFetch|Expr\StaticPropertyFetch $propertyFetch)
+	{
+		parent::__construct([]);
+	}
+
+	public function getPropertyFetch(): Expr\PropertyFetch|Expr\StaticPropertyFetch
+	{
+		return $this->propertyFetch;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_OriginalPropertyTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/ParameterVariableOriginalValueExpr.php b/src/Node/Expr/ParameterVariableOriginalValueExpr.php
new file mode 100644
index 00000000..acf306fc
--- /dev/null
+++ b/src/Node/Expr/ParameterVariableOriginalValueExpr.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class ParameterVariableOriginalValueExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private string $variableName)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVariableName(): string
+	{
+		return $this->variableName;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_ParameterVariableOriginalValueExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/PropertyInitializationExpr.php b/src/Node/Expr/PropertyInitializationExpr.php
new file mode 100644
index 00000000..c114579f
--- /dev/null
+++ b/src/Node/Expr/PropertyInitializationExpr.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class PropertyInitializationExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private string $propertyName)
+	{
+		parent::__construct([]);
+	}
+
+	public function getPropertyName(): string
+	{
+		return $this->propertyName;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_PropertyInitializationExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/SetExistingOffsetValueTypeExpr.php b/src/Node/Expr/SetExistingOffsetValueTypeExpr.php
new file mode 100644
index 00000000..dfaadab4
--- /dev/null
+++ b/src/Node/Expr/SetExistingOffsetValueTypeExpr.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class SetExistingOffsetValueTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $var, private Expr $dim, private Expr $value)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	public function getDim(): Expr
+	{
+		return $this->dim;
+	}
+
+	public function getValue(): Expr
+	{
+		return $this->value;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_SetExistingOffsetValueTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/SetOffsetValueTypeExpr.php b/src/Node/Expr/SetOffsetValueTypeExpr.php
new file mode 100644
index 00000000..2d3db6b2
--- /dev/null
+++ b/src/Node/Expr/SetOffsetValueTypeExpr.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class SetOffsetValueTypeExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $var, private ?Expr $dim, private Expr $value)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	public function getDim(): ?Expr
+	{
+		return $this->dim;
+	}
+
+	public function getValue(): Expr
+	{
+		return $this->value;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_SetOffsetValueTypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/TypeExpr.php b/src/Node/Expr/TypeExpr.php
new file mode 100644
index 00000000..7043268e
--- /dev/null
+++ b/src/Node/Expr/TypeExpr.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class TypeExpr extends Expr implements VirtualNode
+{
+
+	/** @api */
+	public function __construct(private Type $exprType)
+	{
+		parent::__construct();
+	}
+
+	public function getExprType(): Type
+	{
+		return $this->exprType;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_TypeExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Expr/UnsetOffsetExpr.php b/src/Node/Expr/UnsetOffsetExpr.php
new file mode 100644
index 00000000..4b44250f
--- /dev/null
+++ b/src/Node/Expr/UnsetOffsetExpr.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Node\Expr;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\VirtualNode;
+
+final class UnsetOffsetExpr extends Expr implements VirtualNode
+{
+
+	public function __construct(private Expr $var, private Expr $dim)
+	{
+		parent::__construct([]);
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	public function getDim(): Expr
+	{
+		return $this->dim;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_UnsetOffsetExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/FileNode.php b/src/Node/FileNode.php
new file mode 100644
index 00000000..90749e10
--- /dev/null
+++ b/src/Node/FileNode.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+
+/**
+ * @api
+ */
+final class FileNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param Node[] $nodes
+	 */
+	public function __construct(private array $nodes)
+	{
+		$firstNode = $nodes[0] ?? null;
+		parent::__construct($firstNode !== null ? $firstNode->getAttributes() : []);
+	}
+
+	/**
+	 * @return Node[]
+	 */
+	public function getNodes(): array
+	{
+		return $this->nodes;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_FileNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/FinallyExitPointsNode.php b/src/Node/FinallyExitPointsNode.php
new file mode 100644
index 00000000..24683130
--- /dev/null
+++ b/src/Node/FinallyExitPointsNode.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\StatementExitPoint;
+
+/**
+ * @api
+ */
+final class FinallyExitPointsNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param StatementExitPoint[] $finallyExitPoints
+	 * @param StatementExitPoint[] $tryCatchExitPoints
+	 */
+	public function __construct(private array $finallyExitPoints, private array $tryCatchExitPoints)
+	{
+		parent::__construct([]);
+	}
+
+	/**
+	 * @return StatementExitPoint[]
+	 */
+	public function getFinallyExitPoints(): array
+	{
+		return $this->finallyExitPoints;
+	}
+
+	/**
+	 * @return StatementExitPoint[]
+	 */
+	public function getTryCatchExitPoints(): array
+	{
+		return $this->tryCatchExitPoints;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_FinallyExitPointsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/FunctionCallableNode.php b/src/Node/FunctionCallableNode.php
new file mode 100644
index 00000000..2abd88dc
--- /dev/null
+++ b/src/Node/FunctionCallableNode.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Name;
+
+/**
+ * @api
+ */
+final class FunctionCallableNode extends Expr implements VirtualNode
+{
+
+	public function __construct(private Name|Expr $name, private Expr\FuncCall $originalNode)
+	{
+		parent::__construct($this->originalNode->getAttributes());
+	}
+
+	/**
+	 * @return Expr|Name
+	 */
+	public function getName()
+	{
+		return $this->name;
+	}
+
+	public function getOriginalNode(): Expr\FuncCall
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_FunctionCallableNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/FunctionReturnStatementsNode.php b/src/Node/FunctionReturnStatementsNode.php
new file mode 100644
index 00000000..4452efeb
--- /dev/null
+++ b/src/Node/FunctionReturnStatementsNode.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr\Yield_;
+use PhpParser\Node\Expr\YieldFrom;
+use PhpParser\Node\Stmt;
+use PhpParser\Node\Stmt\Function_;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\StatementResult;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use function count;
+
+/**
+ * @api
+ */
+final class FunctionReturnStatementsNode extends NodeAbstract implements ReturnStatementsNode
+{
+
+	/**
+	 * @param list<ReturnStatement> $returnStatements
+	 * @param list<Yield_|YieldFrom> $yieldStatements
+	 * @param list<ExecutionEndNode> $executionEnds
+	 * @param ImpurePoint[] $impurePoints
+	 */
+	public function __construct(
+		private Function_ $function,
+		private array $returnStatements,
+		private array $yieldStatements,
+		private StatementResult $statementResult,
+		private array $executionEnds,
+		private array $impurePoints,
+		private PhpFunctionFromParserNodeReflection $functionReflection,
+	)
+	{
+		parent::__construct($function->getAttributes());
+	}
+
+	public function getReturnStatements(): array
+	{
+		return $this->returnStatements;
+	}
+
+	public function getStatementResult(): StatementResult
+	{
+		return $this->statementResult;
+	}
+
+	public function getExecutionEnds(): array
+	{
+		return $this->executionEnds;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function returnsByRef(): bool
+	{
+		return $this->function->byRef;
+	}
+
+	public function hasNativeReturnTypehint(): bool
+	{
+		return $this->function->returnType !== null;
+	}
+
+	public function getYieldStatements(): array
+	{
+		return $this->yieldStatements;
+	}
+
+	public function isGenerator(): bool
+	{
+		return count($this->yieldStatements) > 0;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_FunctionReturnStatementsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	public function getFunctionReflection(): PhpFunctionFromParserNodeReflection
+	{
+		return $this->functionReflection;
+	}
+
+	/**
+	 * @return Stmt[]
+	 */
+	public function getStatements(): array
+	{
+		return $this->function->getStmts();
+	}
+
+}
diff --git a/src/Node/InArrowFunctionNode.php b/src/Node/InArrowFunctionNode.php
new file mode 100644
index 00000000..a0687dbf
--- /dev/null
+++ b/src/Node/InArrowFunctionNode.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ArrowFunction;
+use PhpParser\NodeAbstract;
+use PHPStan\Type\ClosureType;
+
+/**
+ * @api
+ */
+final class InArrowFunctionNode extends NodeAbstract implements VirtualNode
+{
+
+	private Node\Expr\ArrowFunction $originalNode;
+
+	public function __construct(private ClosureType $closureType, ArrowFunction $originalNode)
+	{
+		parent::__construct($originalNode->getAttributes());
+		$this->originalNode = $originalNode;
+	}
+
+	public function getClosureType(): ClosureType
+	{
+		return $this->closureType;
+	}
+
+	public function getOriginalNode(): Node\Expr\ArrowFunction
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InArrowFunctionNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InClassMethodNode.php b/src/Node/InClassMethodNode.php
new file mode 100644
index 00000000..892df887
--- /dev/null
+++ b/src/Node/InClassMethodNode.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+
+/**
+ * @api
+ */
+final class InClassMethodNode extends Node\Stmt implements VirtualNode
+{
+
+	public function __construct(
+		private ClassReflection $classReflection,
+		private PhpMethodFromParserNodeReflection $methodReflection,
+		private Node\Stmt\ClassMethod $originalNode,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getMethodReflection(): PhpMethodFromParserNodeReflection
+	{
+		return $this->methodReflection;
+	}
+
+	public function getOriginalNode(): Node\Stmt\ClassMethod
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Stmt_InClassMethodNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InClassNode.php b/src/Node/InClassNode.php
new file mode 100644
index 00000000..a29396ae
--- /dev/null
+++ b/src/Node/InClassNode.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Reflection\ClassReflection;
+
+/**
+ * @api
+ */
+final class InClassNode extends Node\Stmt implements VirtualNode
+{
+
+	public function __construct(private ClassLike $originalNode, private ClassReflection $classReflection)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getOriginalNode(): ClassLike
+	{
+		return $this->originalNode;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Stmt_InClassNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InClosureNode.php b/src/Node/InClosureNode.php
new file mode 100644
index 00000000..c3adebcd
--- /dev/null
+++ b/src/Node/InClosureNode.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\NodeAbstract;
+use PHPStan\Type\ClosureType;
+
+/**
+ * @api
+ */
+final class InClosureNode extends NodeAbstract implements VirtualNode
+{
+
+	private Node\Expr\Closure $originalNode;
+
+	public function __construct(private ClosureType $closureType, Closure $originalNode)
+	{
+		parent::__construct($originalNode->getAttributes());
+		$this->originalNode = $originalNode;
+	}
+
+	public function getClosureType(): ClosureType
+	{
+		return $this->closureType;
+	}
+
+	public function getOriginalNode(): Closure
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InClosureNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InForeachNode.php b/src/Node/InForeachNode.php
new file mode 100644
index 00000000..9fa9e4b7
--- /dev/null
+++ b/src/Node/InForeachNode.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt\Foreach_;
+use PhpParser\NodeAbstract;
+
+final class InForeachNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(private Foreach_ $originalNode)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getOriginalNode(): Foreach_
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InForeachNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InFunctionNode.php b/src/Node/InFunctionNode.php
new file mode 100644
index 00000000..77bfa724
--- /dev/null
+++ b/src/Node/InFunctionNode.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+
+/**
+ * @api
+ */
+final class InFunctionNode extends Node\Stmt implements VirtualNode
+{
+
+	public function __construct(
+		private PhpFunctionFromParserNodeReflection $functionReflection,
+		private Node\Stmt\Function_ $originalNode,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getFunctionReflection(): PhpFunctionFromParserNodeReflection
+	{
+		return $this->functionReflection;
+	}
+
+	public function getOriginalNode(): Node\Stmt\Function_
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Stmt_InFunctionNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InPropertyHookNode.php b/src/Node/InPropertyHookNode.php
new file mode 100644
index 00000000..249cde96
--- /dev/null
+++ b/src/Node/InPropertyHookNode.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+
+/**
+ * @api
+ */
+final class InPropertyHookNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(
+		private ClassReflection $classReflection,
+		private PhpMethodFromParserNodeReflection $hookReflection,
+		private PhpPropertyReflection $propertyReflection,
+		private Node\PropertyHook $originalNode,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getHookReflection(): PhpMethodFromParserNodeReflection
+	{
+		return $this->hookReflection;
+	}
+
+	public function getPropertyReflection(): PhpPropertyReflection
+	{
+		return $this->propertyReflection;
+	}
+
+	public function getOriginalNode(): Node\PropertyHook
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InPropertyHookNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InTraitNode.php b/src/Node/InTraitNode.php
new file mode 100644
index 00000000..63dd7207
--- /dev/null
+++ b/src/Node/InTraitNode.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PHPStan\Reflection\ClassReflection;
+
+/**
+ * @api
+ */
+final class InTraitNode extends Node\Stmt implements VirtualNode
+{
+
+	public function __construct(private Node\Stmt\Trait_ $originalNode, private ClassReflection $traitReflection, private ClassReflection $implementingClassReflection)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getOriginalNode(): Node\Stmt\Trait_
+	{
+		return $this->originalNode;
+	}
+
+	public function getTraitReflection(): ClassReflection
+	{
+		return $this->traitReflection;
+	}
+
+	public function getImplementingClassReflection(): ClassReflection
+	{
+		return $this->implementingClassReflection;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Stmt_InTraitNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InstantiationCallableNode.php b/src/Node/InstantiationCallableNode.php
new file mode 100644
index 00000000..b7f09d2b
--- /dev/null
+++ b/src/Node/InstantiationCallableNode.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Name;
+
+/**
+ * @api
+ */
+final class InstantiationCallableNode extends Expr implements VirtualNode
+{
+
+	public function __construct(private Name|Expr $class, private Expr\New_ $originalNode)
+	{
+		parent::__construct($this->originalNode->getAttributes());
+	}
+
+	/**
+	 * @return Expr|Name
+	 */
+	public function getClass()
+	{
+		return $this->class;
+	}
+
+	public function getOriginalNode(): Expr\New_
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InstantiationCallableNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/InvalidateExprNode.php b/src/Node/InvalidateExprNode.php
new file mode 100644
index 00000000..d68d7070
--- /dev/null
+++ b/src/Node/InvalidateExprNode.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+
+/**
+ * @api
+ */
+final class InvalidateExprNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(private Expr $expr)
+	{
+		parent::__construct($expr->getAttributes());
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_InvalidateExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/IssetExpr.php b/src/Node/IssetExpr.php
new file mode 100644
index 00000000..5aca0fc8
--- /dev/null
+++ b/src/Node/IssetExpr.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+
+/**
+ * @api
+ */
+final class IssetExpr extends Expr implements VirtualNode
+{
+
+	/**
+	 * @api
+	 */
+	public function __construct(
+		private Expr $expr,
+	)
+	{
+		parent::__construct([]);
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_IssetExpr';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/LiteralArrayItem.php b/src/Node/LiteralArrayItem.php
new file mode 100644
index 00000000..9919ddaa
--- /dev/null
+++ b/src/Node/LiteralArrayItem.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\ArrayItem;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class LiteralArrayItem
+{
+
+	public function __construct(private Scope $scope, private ?ArrayItem $arrayItem)
+	{
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getArrayItem(): ?ArrayItem
+	{
+		return $this->arrayItem;
+	}
+
+}
diff --git a/src/Node/LiteralArrayNode.php b/src/Node/LiteralArrayNode.php
new file mode 100644
index 00000000..0b0463df
--- /dev/null
+++ b/src/Node/LiteralArrayNode.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr\Array_;
+use PhpParser\NodeAbstract;
+
+/**
+ * @api
+ */
+final class LiteralArrayNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param LiteralArrayItem[] $itemNodes
+	 */
+	public function __construct(Array_ $originalNode, private array $itemNodes)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	/**
+	 * @return LiteralArrayItem[]
+	 */
+	public function getItemNodes(): array
+	{
+		return $this->itemNodes;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_LiteralArray';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/MatchExpressionArm.php b/src/Node/MatchExpressionArm.php
new file mode 100644
index 00000000..f92e0e20
--- /dev/null
+++ b/src/Node/MatchExpressionArm.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+/**
+ * @api
+ */
+final class MatchExpressionArm
+{
+
+	/**
+	 * @param MatchExpressionArmCondition[] $conditions
+	 */
+	public function __construct(private MatchExpressionArmBody $body, private array $conditions, private int $line)
+	{
+	}
+
+	public function getBody(): MatchExpressionArmBody
+	{
+		return $this->body;
+	}
+
+	/**
+	 * @return MatchExpressionArmCondition[]
+	 */
+	public function getConditions(): array
+	{
+		return $this->conditions;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+}
diff --git a/src/Node/MatchExpressionArmBody.php b/src/Node/MatchExpressionArmBody.php
new file mode 100644
index 00000000..d9d6e6d3
--- /dev/null
+++ b/src/Node/MatchExpressionArmBody.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class MatchExpressionArmBody
+{
+
+	public function __construct(private Scope $scope, private Expr $body)
+	{
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getBody(): Expr
+	{
+		return $this->body;
+	}
+
+}
diff --git a/src/Node/MatchExpressionArmCondition.php b/src/Node/MatchExpressionArmCondition.php
new file mode 100644
index 00000000..d5ebeb0b
--- /dev/null
+++ b/src/Node/MatchExpressionArmCondition.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class MatchExpressionArmCondition
+{
+
+	public function __construct(private Expr $condition, private Scope $scope, private int $line)
+	{
+	}
+
+	public function getCondition(): Expr
+	{
+		return $this->condition;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+}
diff --git a/src/Node/MatchExpressionNode.php b/src/Node/MatchExpressionNode.php
new file mode 100644
index 00000000..5437be19
--- /dev/null
+++ b/src/Node/MatchExpressionNode.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class MatchExpressionNode extends NodeAbstract implements VirtualNode
+{
+
+	/**
+	 * @param MatchExpressionArm[] $arms
+	 */
+	public function __construct(
+		private Expr $condition,
+		private array $arms,
+		Expr\Match_ $originalNode,
+		private Scope $endScope,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getCondition(): Expr
+	{
+		return $this->condition;
+	}
+
+	/**
+	 * @return MatchExpressionArm[]
+	 */
+	public function getArms(): array
+	{
+		return $this->arms;
+	}
+
+	public function getEndScope(): Scope
+	{
+		return $this->endScope;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_MatchExpression';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Method/MethodCall.php b/src/Node/Method/MethodCall.php
new file mode 100644
index 00000000..8cc2b20e
--- /dev/null
+++ b/src/Node/Method/MethodCall.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Node\Method;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class MethodCall
+{
+
+	public function __construct(
+		private Node\Expr\MethodCall|StaticCall|Array_ $node,
+		private Scope $scope,
+	)
+	{
+	}
+
+	/**
+	 * @return Node\Expr\MethodCall|StaticCall|Array_
+	 */
+	public function getNode()
+	{
+		return $this->node;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+}
diff --git a/src/Node/MethodCallableNode.php b/src/Node/MethodCallableNode.php
new file mode 100644
index 00000000..b24f77e1
--- /dev/null
+++ b/src/Node/MethodCallableNode.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Identifier;
+
+/**
+ * @api
+ */
+final class MethodCallableNode extends Expr implements VirtualNode
+{
+
+	public function __construct(
+		private Expr $var,
+		private Identifier|Expr $name,
+		private Expr\MethodCall $originalNode,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	public function getVar(): Expr
+	{
+		return $this->var;
+	}
+
+	/**
+	 * @return Expr|Identifier
+	 */
+	public function getName()
+	{
+		return $this->name;
+	}
+
+	public function getOriginalNode(): Expr\MethodCall
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_MethodCallableNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/MethodReturnStatementsNode.php b/src/Node/MethodReturnStatementsNode.php
new file mode 100644
index 00000000..52054634
--- /dev/null
+++ b/src/Node/MethodReturnStatementsNode.php
@@ -0,0 +1,127 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr\Yield_;
+use PhpParser\Node\Expr\YieldFrom;
+use PhpParser\Node\Stmt;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\StatementResult;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use function count;
+
+/**
+ * @api
+ */
+final class MethodReturnStatementsNode extends NodeAbstract implements ReturnStatementsNode
+{
+
+	private ClassMethod $classMethod;
+
+	/**
+	 * @param list<ReturnStatement> $returnStatements
+	 * @param list<Yield_|YieldFrom> $yieldStatements
+	 * @param list<ExecutionEndNode> $executionEnds
+	 * @param ImpurePoint[] $impurePoints
+	 */
+	public function __construct(
+		ClassMethod $method,
+		private array $returnStatements,
+		private array $yieldStatements,
+		private StatementResult $statementResult,
+		private array $executionEnds,
+		private array $impurePoints,
+		private ClassReflection $classReflection,
+		private PhpMethodFromParserNodeReflection $methodReflection,
+	)
+	{
+		parent::__construct($method->getAttributes());
+		$this->classMethod = $method;
+	}
+
+	public function getReturnStatements(): array
+	{
+		return $this->returnStatements;
+	}
+
+	public function getStatementResult(): StatementResult
+	{
+		return $this->statementResult;
+	}
+
+	public function getExecutionEnds(): array
+	{
+		return $this->executionEnds;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function returnsByRef(): bool
+	{
+		return $this->classMethod->byRef;
+	}
+
+	public function hasNativeReturnTypehint(): bool
+	{
+		return $this->classMethod->returnType !== null;
+	}
+
+	public function getMethodName(): string
+	{
+		return $this->classMethod->name->toString();
+	}
+
+	public function getYieldStatements(): array
+	{
+		return $this->yieldStatements;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getMethodReflection(): PhpMethodFromParserNodeReflection
+	{
+		return $this->methodReflection;
+	}
+
+	/**
+	 * @return Stmt[]
+	 */
+	public function getStatements(): array
+	{
+		$stmts = $this->classMethod->getStmts();
+		if ($stmts === null) {
+			return [];
+		}
+
+		return $stmts;
+	}
+
+	public function isGenerator(): bool
+	{
+		return count($this->yieldStatements) > 0;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_MethodReturnStatementsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/NoopExpressionNode.php b/src/Node/NoopExpressionNode.php
new file mode 100644
index 00000000..03ffbe23
--- /dev/null
+++ b/src/Node/NoopExpressionNode.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+
+final class NoopExpressionNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(private Expr $originalExpr, private bool $hasAssign)
+	{
+		parent::__construct($this->originalExpr->getAttributes());
+	}
+
+	public function getOriginalExpr(): Expr
+	{
+		return $this->originalExpr;
+	}
+
+	public function hasAssign(): bool
+	{
+		return $this->hasAssign;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_NoopExpressionNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/Printer/ExprPrinter.php b/src/Node/Printer/ExprPrinter.php
new file mode 100644
index 00000000..5f704ebc
--- /dev/null
+++ b/src/Node/Printer/ExprPrinter.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Node\Printer;
+return;
+
+use PhpParser\Node\Expr;
+
+/**
+ * @api
+ */
+final class ExprPrinter
+{
+
+	public function __construct(private Printer $printer)
+	{
+	}
+
+	public function printExpr(Expr $expr): string
+	{
+		/** @var string|null $exprString */
+		$exprString = $expr->getAttribute('phpstan_cache_printer');
+		if ($exprString === null) {
+			$exprString = $this->printer->prettyPrintExpr($expr);
+			$expr->setAttribute('phpstan_cache_printer', $exprString);
+		}
+
+		return $exprString;
+	}
+
+}
diff --git a/src/Node/Printer/NodeTypePrinter.php b/src/Node/Printer/NodeTypePrinter.php
new file mode 100644
index 00000000..15f4513e
--- /dev/null
+++ b/src/Node/Printer/NodeTypePrinter.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Node\Printer;
+return;
+
+use PhpParser\Node;
+use PHPStan\ShouldNotHappenException;
+use function array_map;
+use function implode;
+
+final class NodeTypePrinter
+{
+
+	public static function printType(Node\Name|Node\Identifier|Node\ComplexType|null $type): ?string
+	{
+		if ($type === null) {
+			return null;
+		}
+
+		if ($type instanceof Node\NullableType) {
+			return '?' . self::printType($type->type);
+		}
+
+		if ($type instanceof Node\UnionType) {
+			return implode('|', array_map(static function ($innerType): string {
+				$printedType = self::printType($innerType);
+				if ($printedType === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $printedType;
+			}, $type->types));
+		}
+
+		if ($type instanceof Node\IntersectionType) {
+			return implode('&', array_map(static function ($innerType): string {
+				$printedType = self::printType($innerType);
+				if ($printedType === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $printedType;
+			}, $type->types));
+		}
+
+		if ($type instanceof Node\Identifier || $type instanceof Node\Name) {
+			return $type->toString();
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Node/Printer/Printer.php b/src/Node/Printer/Printer.php
new file mode 100644
index 00000000..ea75c07a
--- /dev/null
+++ b/src/Node/Printer/Printer.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Node\Printer;
+return;
+
+use PhpParser\PrettyPrinter\Standard;
+use PHPStan\Node\Expr\AlwaysRememberedExpr;
+use PHPStan\Node\Expr\ExistingArrayDimFetch;
+use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
+use PHPStan\Node\Expr\GetIterableValueTypeExpr;
+use PHPStan\Node\Expr\GetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\OriginalPropertyTypeExpr;
+use PHPStan\Node\Expr\ParameterVariableOriginalValueExpr;
+use PHPStan\Node\Expr\PropertyInitializationExpr;
+use PHPStan\Node\Expr\SetExistingOffsetValueTypeExpr;
+use PHPStan\Node\Expr\SetOffsetValueTypeExpr;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Node\Expr\UnsetOffsetExpr;
+use PHPStan\Node\IssetExpr;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class Printer extends Standard
+{
+
+	protected function pPHPStan_Node_TypeExpr(TypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanType(%s)', $expr->getExprType()->describe(VerbosityLevel::precise()));
+	}
+
+	protected function pPHPStan_Node_GetOffsetValueTypeExpr(GetOffsetValueTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanGetOffsetValueType(%s, %s)', $this->p($expr->getVar()), $this->p($expr->getDim()));
+	}
+
+	protected function pPHPStan_Node_UnsetOffsetExpr(UnsetOffsetExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanUnsetOffset(%s, %s)', $this->p($expr->getVar()), $this->p($expr->getDim()));
+	}
+
+	protected function pPHPStan_Node_GetIterableValueTypeExpr(GetIterableValueTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanGetIterableValueType(%s)', $this->p($expr->getExpr()));
+	}
+
+	protected function pPHPStan_Node_GetIterableKeyTypeExpr(GetIterableKeyTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanGetIterableKeyType(%s)', $this->p($expr->getExpr()));
+	}
+
+	protected function pPHPStan_Node_ExistingArrayDimFetch(ExistingArrayDimFetch $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanExistingArrayDimFetch(%s, %s)', $this->p($expr->getVar()), $this->p($expr->getDim()));
+	}
+
+	protected function pPHPStan_Node_OriginalPropertyTypeExpr(OriginalPropertyTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanOriginalPropertyType(%s)', $this->p($expr->getPropertyFetch()));
+	}
+
+	protected function pPHPStan_Node_SetOffsetValueTypeExpr(SetOffsetValueTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanSetOffsetValueType(%s, %s, %s)', $this->p($expr->getVar()), $expr->getDim() !== null ? $this->p($expr->getDim()) : 'null', $this->p($expr->getValue()));
+	}
+
+	protected function pPHPStan_Node_SetExistingOffsetValueTypeExpr(SetExistingOffsetValueTypeExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanSetExistingOffsetValueType(%s, %s, %s)', $this->p($expr->getVar()), $this->p($expr->getDim()), $this->p($expr->getValue()));
+	}
+
+	protected function pPHPStan_Node_AlwaysRememberedExpr(AlwaysRememberedExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanRembered(%s)', $this->p($expr->getExpr()));
+	}
+
+	protected function pPHPStan_Node_PropertyInitializationExpr(PropertyInitializationExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanPropertyInitialization(%s)', $expr->getPropertyName());
+	}
+
+	protected function pPHPStan_Node_ParameterVariableOriginalValueExpr(ParameterVariableOriginalValueExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanParameterVariableOriginalValue(%s)', $expr->getVariableName());
+	}
+
+	protected function pPHPStan_Node_IssetExpr(IssetExpr $expr): string // phpcs:ignore
+	{
+		return sprintf('__phpstanIssetExpr(%s)', $this->p($expr->getExpr()));
+	}
+
+}
diff --git a/src/Node/Property/PropertyAssign.php b/src/Node/Property/PropertyAssign.php
new file mode 100644
index 00000000..0b886505
--- /dev/null
+++ b/src/Node/Property/PropertyAssign.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Node\Property;
+return;
+
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+
+/**
+ * @api
+ */
+final class PropertyAssign
+{
+
+	public function __construct(
+		private PropertyAssignNode $assign,
+		private Scope $scope,
+	)
+	{
+	}
+
+	public function getAssign(): PropertyAssignNode
+	{
+		return $this->assign;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+}
diff --git a/src/Node/Property/PropertyRead.php b/src/Node/Property/PropertyRead.php
new file mode 100644
index 00000000..53d1ab87
--- /dev/null
+++ b/src/Node/Property/PropertyRead.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Node\Property;
+return;
+
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class PropertyRead
+{
+
+	public function __construct(
+		private PropertyFetch|StaticPropertyFetch $fetch,
+		private Scope $scope,
+	)
+	{
+	}
+
+	/**
+	 * @return PropertyFetch|StaticPropertyFetch
+	 */
+	public function getFetch()
+	{
+		return $this->fetch;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+}
diff --git a/src/Node/Property/PropertyWrite.php b/src/Node/Property/PropertyWrite.php
new file mode 100644
index 00000000..9801b879
--- /dev/null
+++ b/src/Node/Property/PropertyWrite.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Node\Property;
+return;
+
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class PropertyWrite
+{
+
+	public function __construct(private PropertyFetch|StaticPropertyFetch $fetch, private Scope $scope, private bool $promotedPropertyWrite)
+	{
+	}
+
+	/**
+	 * @return PropertyFetch|StaticPropertyFetch
+	 */
+	public function getFetch()
+	{
+		return $this->fetch;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function isPromotedPropertyWrite(): bool
+	{
+		return $this->promotedPropertyWrite;
+	}
+
+}
diff --git a/src/Node/PropertyAssignNode.php b/src/Node/PropertyAssignNode.php
new file mode 100644
index 00000000..c22ec213
--- /dev/null
+++ b/src/Node/PropertyAssignNode.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+
+final class PropertyAssignNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(
+		private Expr\PropertyFetch|Expr\StaticPropertyFetch $propertyFetch,
+		private Expr $assignedExpr,
+		private bool $assignOp,
+	)
+	{
+		parent::__construct($propertyFetch->getAttributes());
+	}
+
+	public function getPropertyFetch(): Expr\PropertyFetch|Expr\StaticPropertyFetch
+	{
+		return $this->propertyFetch;
+	}
+
+	public function getAssignedExpr(): Expr
+	{
+		return $this->assignedExpr;
+	}
+
+	public function isAssignOp(): bool
+	{
+		return $this->assignOp;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_PropertyAssignNodeNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/PropertyHookReturnStatementsNode.php b/src/Node/PropertyHookReturnStatementsNode.php
new file mode 100644
index 00000000..1e93a742
--- /dev/null
+++ b/src/Node/PropertyHookReturnStatementsNode.php
@@ -0,0 +1,112 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\PropertyHook;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\StatementResult;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+
+/**
+ * @api
+ */
+final class PropertyHookReturnStatementsNode extends NodeAbstract implements ReturnStatementsNode
+{
+
+	/**
+	 * @param list<ReturnStatement> $returnStatements
+	 * @param list<ExecutionEndNode> $executionEnds
+	 * @param ImpurePoint[] $impurePoints
+	 */
+	public function __construct(
+		private PropertyHook $hook,
+		private array $returnStatements,
+		private StatementResult $statementResult,
+		private array $executionEnds,
+		private array $impurePoints,
+		private ClassReflection $classReflection,
+		private PhpMethodFromParserNodeReflection $hookReflection,
+		private PhpPropertyReflection $propertyReflection,
+	)
+	{
+		parent::__construct($hook->getAttributes());
+	}
+
+	public function getPropertyHookNode(): PropertyHook
+	{
+		return $this->hook;
+	}
+
+	public function returnsByRef(): bool
+	{
+		return $this->hook->byRef;
+	}
+
+	public function hasNativeReturnTypehint(): bool
+	{
+		return false;
+	}
+
+	public function getYieldStatements(): array
+	{
+		return [];
+	}
+
+	public function isGenerator(): bool
+	{
+		return false;
+	}
+
+	public function getReturnStatements(): array
+	{
+		return $this->returnStatements;
+	}
+
+	public function getStatementResult(): StatementResult
+	{
+		return $this->statementResult;
+	}
+
+	public function getExecutionEnds(): array
+	{
+		return $this->executionEnds;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getHookReflection(): PhpMethodFromParserNodeReflection
+	{
+		return $this->hookReflection;
+	}
+
+	public function getPropertyReflection(): PhpPropertyReflection
+	{
+		return $this->propertyReflection;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_PropertyHookReturnStatementsNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/PropertyHookStatementNode.php b/src/Node/PropertyHookStatementNode.php
new file mode 100644
index 00000000..2320cf4d
--- /dev/null
+++ b/src/Node/PropertyHookStatementNode.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\PropertyHook;
+use PhpParser\Node\Stmt;
+
+/**
+ * This class exists because PhpParser\Node\PropertyHook
+ * is not a Stmt, but we need to pass it to
+ * a few places that expect a Stmt.
+ *
+ * This is because PhpParser\Node\PropertyHook
+ * is likely the one of two PhpParser nodes which contains Stmt[]
+ * but itself is not a Stmt.
+ *
+ * The other one is Expr\Closure, but that one can
+ * at least be wrapped in Stmt\Expression.
+ */
+final class PropertyHookStatementNode extends Stmt implements VirtualNode
+{
+
+	public function __construct(private PropertyHook $propertyHook)
+	{
+		parent::__construct($this->propertyHook->getAttributes());
+	}
+
+	public function getPropertyHook(): PropertyHook
+	{
+		return $this->propertyHook;
+	}
+
+	/**
+	 * @return null
+	 */
+	public function getReturnType()
+	{
+		return null;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_PropertyHookStatementNode';
+	}
+
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/ReturnStatement.php b/src/Node/ReturnStatement.php
new file mode 100644
index 00000000..8bbaca73
--- /dev/null
+++ b/src/Node/ReturnStatement.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Return_;
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ */
+final class ReturnStatement
+{
+
+	private Node\Stmt\Return_ $returnNode;
+
+	public function __construct(private Scope $scope, Return_ $returnNode)
+	{
+		$this->returnNode = $returnNode;
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getReturnNode(): Return_
+	{
+		return $this->returnNode;
+	}
+
+}
diff --git a/src/Node/ReturnStatementsNode.php b/src/Node/ReturnStatementsNode.php
new file mode 100644
index 00000000..41aa89d8
--- /dev/null
+++ b/src/Node/ReturnStatementsNode.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr\Yield_;
+use PhpParser\Node\Expr\YieldFrom;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\StatementResult;
+
+/** @api */
+interface ReturnStatementsNode extends VirtualNode
+{
+
+	/**
+	 * @return list<ReturnStatement>
+	 */
+	public function getReturnStatements(): array;
+
+	public function getStatementResult(): StatementResult;
+
+	/**
+	 * @return list<ExecutionEndNode>
+	 */
+	public function getExecutionEnds(): array;
+
+	/**
+	 * @return ImpurePoint[]
+	 */
+	public function getImpurePoints(): array;
+
+	public function returnsByRef(): bool;
+
+	public function hasNativeReturnTypehint(): bool;
+
+	/**
+	 * @return list<Yield_|YieldFrom>
+	 */
+	public function getYieldStatements(): array;
+
+	public function isGenerator(): bool;
+
+}
diff --git a/src/Node/StaticMethodCallableNode.php b/src/Node/StaticMethodCallableNode.php
new file mode 100644
index 00000000..23226a63
--- /dev/null
+++ b/src/Node/StaticMethodCallableNode.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+
+/**
+ * @api
+ */
+final class StaticMethodCallableNode extends Expr implements VirtualNode
+{
+
+	public function __construct(
+		private Name|Expr $class,
+		private Identifier|Expr $name,
+		private Expr\StaticCall $originalNode,
+	)
+	{
+		parent::__construct($originalNode->getAttributes());
+	}
+
+	/**
+	 * @return Expr|Name
+	 */
+	public function getClass()
+	{
+		return $this->class;
+	}
+
+	/**
+	 * @return Identifier|Expr
+	 */
+	public function getName()
+	{
+		return $this->name;
+	}
+
+	public function getOriginalNode(): Expr\StaticCall
+	{
+		return $this->originalNode;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_StaticMethodCallableNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/UnreachableStatementNode.php b/src/Node/UnreachableStatementNode.php
new file mode 100644
index 00000000..4b29bbe7
--- /dev/null
+++ b/src/Node/UnreachableStatementNode.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Stmt;
+
+/**
+ * @api
+ */
+final class UnreachableStatementNode extends Stmt implements VirtualNode
+{
+
+	/** @param Stmt[] $nextStatements */
+	public function __construct(private Stmt $originalStatement, private array $nextStatements = [])
+	{
+		parent::__construct($originalStatement->getAttributes());
+	}
+
+	public function getOriginalStatement(): Stmt
+	{
+		return $this->originalStatement;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Stmt_UnreachableStatementNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+	/**
+	 * @return Stmt[]
+	 */
+	public function getNextStatements(): array
+	{
+		return $this->nextStatements;
+	}
+
+}
diff --git a/src/Node/VarTagChangedExpressionTypeNode.php b/src/Node/VarTagChangedExpressionTypeNode.php
new file mode 100644
index 00000000..d30d7f6c
--- /dev/null
+++ b/src/Node/VarTagChangedExpressionTypeNode.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+use PHPStan\PhpDoc\Tag\VarTag;
+
+final class VarTagChangedExpressionTypeNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(private VarTag $varTag, private Expr $expr)
+	{
+		parent::__construct($expr->getAttributes());
+	}
+
+	public function getVarTag(): VarTag
+	{
+		return $this->varTag;
+	}
+
+	public function getExpr(): Expr
+	{
+		return $this->expr;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_VarTagChangedExpressionType';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/VariableAssignNode.php b/src/Node/VariableAssignNode.php
new file mode 100644
index 00000000..e6db5054
--- /dev/null
+++ b/src/Node/VariableAssignNode.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+
+final class VariableAssignNode extends NodeAbstract implements VirtualNode
+{
+
+	public function __construct(
+		private Expr\Variable $variable,
+		private Expr $assignedExpr,
+		private bool $assignOp,
+	)
+	{
+		parent::__construct($variable->getAttributes());
+	}
+
+	public function getVariable(): Expr\Variable
+	{
+		return $this->variable;
+	}
+
+	public function getAssignedExpr(): Expr
+	{
+		return $this->assignedExpr;
+	}
+
+	public function isAssignOp(): bool
+	{
+		return $this->assignOp;
+	}
+
+	public function getType(): string
+	{
+		return 'PHPStan_Node_VariableAssignNodeNode';
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getSubNodeNames(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Node/VirtualNode.php b/src/Node/VirtualNode.php
new file mode 100644
index 00000000..09d79cc2
--- /dev/null
+++ b/src/Node/VirtualNode.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Node;
+return;
+
+use PhpParser\Node;
+
+/** @api */
+interface VirtualNode extends Node
+{
+
+}
diff --git a/src/Parallel/ParallelAnalyser.php b/src/Parallel/ParallelAnalyser.php
new file mode 100644
index 00000000..e15d84a1
--- /dev/null
+++ b/src/Parallel/ParallelAnalyser.php
@@ -0,0 +1,323 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+use Closure;
+use Clue\React\NDJson\Decoder;
+use Clue\React\NDJson\Encoder;
+use Nette\Utils\Random;
+use PHPStan\Analyser\AnalyserResult;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Collectors\CollectedData;
+use PHPStan\Dependency\RootExportedNode;
+use PHPStan\Process\ProcessHelper;
+use React\EventLoop\LoopInterface;
+use React\Promise\Deferred;
+use React\Promise\PromiseInterface;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpServer;
+use Symfony\Component\Console\Input\InputInterface;
+use Throwable;
+use function array_map;
+use function array_pop;
+use function array_reverse;
+use function array_sum;
+use function count;
+use function defined;
+use function ini_get;
+use function max;
+use function memory_get_usage;
+use function parse_url;
+use function sprintf;
+use function str_contains;
+use const PHP_URL_PORT;
+
+final class ParallelAnalyser
+{
+
+	private const DEFAULT_TIMEOUT = 600.0;
+
+	private float $processTimeout;
+
+	private ProcessPool $processPool;
+
+	public function __construct(
+		private int $internalErrorsCountLimit,
+		float $processTimeout,
+		private int $decoderBufferSize,
+	)
+	{
+		$this->processTimeout = max($processTimeout, self::DEFAULT_TIMEOUT);
+	}
+
+	/**
+	 * @param Closure(int ): void|null $postFileCallback
+	 * @param (callable(list<Error>, list<Error>, string[]): void)|null $onFileAnalysisHandler
+	 * @return PromiseInterface<AnalyserResult>
+	 */
+	public function analyse(
+		LoopInterface $loop,
+		Schedule $schedule,
+		string $mainScript,
+		?Closure $postFileCallback,
+		?string $projectConfigFile,
+		InputInterface $input,
+		?callable $onFileAnalysisHandler,
+	): PromiseInterface
+	{
+		$jobs = array_reverse($schedule->getJobs());
+
+		$numberOfProcesses = $schedule->getNumberOfProcesses();
+		$someChildEnded = false;
+		$errors = [];
+		$filteredPhpErrors = [];
+		$allPhpErrors = [];
+		$locallyIgnoredErrors = [];
+		$linesToIgnore = [];
+		$unmatchedLineIgnores = [];
+		$peakMemoryUsages = [];
+		$internalErrors = [];
+		$internalErrorsCount = 0;
+		$collectedData = [];
+		$dependencies = [];
+		$reachedInternalErrorsCountLimit = false;
+		$exportedNodes = [];
+
+		/** @var Deferred<AnalyserResult> $deferred */
+		$deferred = new Deferred();
+
+		$server = new TcpServer('127.0.0.1:0', $loop);
+		$this->processPool = new ProcessPool($server, static function () use ($deferred, &$jobs, &$internalErrors, &$internalErrorsCount, &$reachedInternalErrorsCountLimit, &$errors, &$filteredPhpErrors, &$allPhpErrors, &$locallyIgnoredErrors, &$linesToIgnore, &$unmatchedLineIgnores, &$collectedData, &$dependencies, &$exportedNodes, &$peakMemoryUsages): void {
+			if (count($jobs) > 0 && $internalErrorsCount === 0) {
+				$internalErrors[] = new InternalError(
+					'Some parallel worker jobs have not finished.',
+					'running parallel worker',
+					[],
+					null,
+					true,
+				);
+				$internalErrorsCount++;
+			}
+
+			$deferred->resolve(new AnalyserResult(
+				$errors,
+				$filteredPhpErrors,
+				$allPhpErrors,
+				$locallyIgnoredErrors,
+				$linesToIgnore,
+				$unmatchedLineIgnores,
+				$internalErrors,
+				$collectedData,
+				$internalErrorsCount === 0 ? $dependencies : null,
+				$exportedNodes,
+				$reachedInternalErrorsCountLimit,
+				array_sum($peakMemoryUsages), // not 100% correct as the peak usages of workers might not have met
+			));
+		});
+		$server->on('connection', function (ConnectionInterface $connection) use (&$jobs): void {
+			// phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly
+			$jsonInvalidUtf8Ignore = defined('JSON_INVALID_UTF8_IGNORE') ? JSON_INVALID_UTF8_IGNORE : 0;
+			// phpcs:enable
+			$decoder = new Decoder($connection, true, 512, $jsonInvalidUtf8Ignore, $this->decoderBufferSize);
+			$encoder = new Encoder($connection, $jsonInvalidUtf8Ignore);
+			$decoder->on('data', function (array $data) use (&$jobs, $decoder, $encoder): void {
+				if ($data['action'] !== 'hello') {
+					return;
+				}
+
+				$identifier = $data['identifier'];
+				$process = $this->processPool->getProcess($identifier);
+				$process->bindConnection($decoder, $encoder);
+				if (count($jobs) === 0) {
+					$this->processPool->tryQuitProcess($identifier);
+					return;
+				}
+
+				$job = array_pop($jobs);
+				$process->request(['action' => 'analyse', 'files' => $job]);
+			});
+		});
+		/** @var string $serverAddress */
+		$serverAddress = $server->getAddress();
+
+		/** @var int<0, 65535> $serverPort */
+		$serverPort = parse_url($serverAddress, PHP_URL_PORT);
+
+		$handleError = function (Throwable $error) use (&$internalErrors, &$internalErrorsCount, &$reachedInternalErrorsCountLimit): void {
+			$internalErrors[] = new InternalError(
+				$error->getMessage(),
+				'communicating with parallel worker',
+				InternalError::prepareTrace($error),
+				$error->getTraceAsString(),
+				!$error instanceof ProcessTimedOutException,
+			);
+			$internalErrorsCount++;
+			$reachedInternalErrorsCountLimit = true;
+			$this->processPool->quitAll();
+		};
+
+		for ($i = 0; $i < $numberOfProcesses; $i++) {
+			if (count($jobs) === 0) {
+				break;
+			}
+
+			$processIdentifier = Random::generate();
+			$commandOptions = [
+				'--port',
+				(string) $serverPort,
+				'--identifier',
+				$processIdentifier,
+			];
+
+			$process = new Process(ProcessHelper::getWorkerCommand(
+				$mainScript,
+				'worker',
+				$projectConfigFile,
+				$commandOptions,
+				$input,
+			), $loop, $this->processTimeout);
+			$process->start(function (array $json) use ($process, &$internalErrors, &$errors, &$filteredPhpErrors, &$allPhpErrors, &$locallyIgnoredErrors, &$linesToIgnore, &$unmatchedLineIgnores, &$collectedData, &$dependencies, &$exportedNodes, &$peakMemoryUsages, &$jobs, $postFileCallback, &$internalErrorsCount, &$reachedInternalErrorsCountLimit, $processIdentifier, $onFileAnalysisHandler): void {
+				$fileErrors = [];
+				foreach ($json['errors'] as $jsonError) {
+					$fileErrors[] = Error::decode($jsonError);
+				}
+				foreach ($json['internalErrors'] as $internalJsonError) {
+					$internalErrors[] = InternalError::decode($internalJsonError);
+				}
+
+				foreach ($json['filteredPhpErrors'] as $filteredPhpError) {
+					$filteredPhpErrors[] = Error::decode($filteredPhpError);
+				}
+
+				foreach ($json['allPhpErrors'] as $allPhpError) {
+					$allPhpErrors[] = Error::decode($allPhpError);
+				}
+
+				$locallyIgnoredFileErrors = [];
+				foreach ($json['locallyIgnoredErrors'] as $locallyIgnoredJsonError) {
+					$locallyIgnoredFileErrors[] = Error::decode($locallyIgnoredJsonError);
+				}
+
+				if ($onFileAnalysisHandler !== null) {
+					$onFileAnalysisHandler($fileErrors, $locallyIgnoredFileErrors, $json['files']);
+				}
+
+				foreach ($fileErrors as $fileError) {
+					$errors[] = $fileError;
+				}
+
+				foreach ($locallyIgnoredFileErrors as $locallyIgnoredFileError) {
+					$locallyIgnoredErrors[] = $locallyIgnoredFileError;
+				}
+
+				foreach ($json['collectedData'] as $jsonData) {
+					$collectedData[] = CollectedData::decode($jsonData);
+				}
+
+				/**
+				 * @var string $file
+				 * @var array<string> $fileDependencies
+				 */
+				foreach ($json['dependencies'] as $file => $fileDependencies) {
+					$dependencies[$file] = $fileDependencies;
+				}
+
+				foreach ($json['linesToIgnore'] as $file => $fileLinesToIgnore) {
+					if (count($fileLinesToIgnore) === 0) {
+						continue;
+					}
+					$linesToIgnore[$file] = $fileLinesToIgnore;
+				}
+
+				foreach ($json['unmatchedLineIgnores'] as $file => $fileUnmatchedLineIgnores) {
+					if (count($fileUnmatchedLineIgnores) === 0) {
+						continue;
+					}
+					$unmatchedLineIgnores[$file] = $fileUnmatchedLineIgnores;
+				}
+
+				/**
+				 * @var string $file
+				 * @var array<mixed[]> $fileExportedNodes
+				 */
+				foreach ($json['exportedNodes'] as $file => $fileExportedNodes) {
+					if (count($fileExportedNodes) === 0) {
+						continue;
+					}
+					$exportedNodes[$file] = array_map(static function (array $node): RootExportedNode {
+						$class = $node['type'];
+
+						return $class::decode($node['data']);
+					}, $fileExportedNodes);
+				}
+
+				if ($postFileCallback !== null) {
+					$postFileCallback(count($json['files']));
+				}
+
+				if (!isset($peakMemoryUsages[$processIdentifier]) || $peakMemoryUsages[$processIdentifier] < $json['memoryUsage']) {
+					$peakMemoryUsages[$processIdentifier] = $json['memoryUsage'];
+				}
+
+				$internalErrorsCount += $json['internalErrorsCount'];
+				if ($internalErrorsCount >= $this->internalErrorsCountLimit) {
+					$reachedInternalErrorsCountLimit = true;
+					$this->processPool->quitAll();
+				}
+
+				if (count($jobs) === 0) {
+					$this->processPool->tryQuitProcess($processIdentifier);
+					return;
+				}
+
+				$job = array_pop($jobs);
+				$process->request(['action' => 'analyse', 'files' => $job]);
+			}, $handleError, function ($exitCode, string $output) use (&$someChildEnded, &$peakMemoryUsages, &$internalErrors, &$internalErrorsCount, $processIdentifier): void {
+				if ($someChildEnded === false) {
+					$peakMemoryUsages['main'] = memory_get_usage(true);
+				}
+				$someChildEnded = true;
+
+				if ($exitCode === 0) {
+					$this->processPool->tryQuitProcess($processIdentifier);
+					return;
+				}
+				if ($exitCode === null) {
+					$this->processPool->tryQuitProcess($processIdentifier);
+					return;
+				}
+
+				$memoryLimitMessage = 'PHPStan process crashed because it reached configured PHP memory limit';
+				if (str_contains($output, $memoryLimitMessage)) {
+					foreach ($internalErrors as $internalError) {
+						if (!str_contains($internalError->getMessage(), $memoryLimitMessage)) {
+							continue;
+						}
+
+						$this->processPool->tryQuitProcess($processIdentifier);
+						return;
+					}
+					$internalErrors[] = new InternalError(sprintf(
+						"Child process error: %s: %s\n%s\n",
+						$memoryLimitMessage,
+						ini_get('memory_limit'),
+						'Increase your memory limit in php.ini or run PHPStan with --memory-limit CLI option.',
+					), 'running parallel worker', [], null, false);
+					$internalErrorsCount++;
+					$this->processPool->tryQuitProcess($processIdentifier);
+					return;
+				}
+
+				$internalErrors[] = new InternalError(sprintf('Child process error (exit code %d): %s', $exitCode, $output), 'running parallel worker', [], null, true);
+				$internalErrorsCount++;
+				$this->processPool->tryQuitProcess($processIdentifier);
+			});
+			$this->processPool->attachProcess($processIdentifier, $process);
+		}
+
+		return $deferred->promise();
+	}
+
+}
diff --git a/src/Parallel/Process.php b/src/Parallel/Process.php
new file mode 100644
index 00000000..4c0d5905
--- /dev/null
+++ b/src/Parallel/Process.php
@@ -0,0 +1,159 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\TimerInterface;
+use React\Stream\ReadableStreamInterface;
+use React\Stream\WritableStreamInterface;
+use Throwable;
+use function fclose;
+use function is_string;
+use function rewind;
+use function sprintf;
+use function stream_get_contents;
+use function tmpfile;
+
+final class Process
+{
+
+	public \React\ChildProcess\Process $process;
+
+	private ?WritableStreamInterface $in = null;
+
+	/** @var resource */
+	private $stdOut;
+
+	/** @var resource */
+	private $stdErr;
+
+	/** @var callable(mixed[] $json) : void */
+	private $onData;
+
+	/** @var callable(Throwable $exception): void */
+	private $onError;
+
+	private ?TimerInterface $timer = null;
+
+	public function __construct(
+		private string $command,
+		private LoopInterface $loop,
+		private float $timeoutSeconds,
+	)
+	{
+	}
+
+	/**
+	 * @param callable(mixed[] $json) : void $onData
+	 * @param callable(Throwable $exception): void $onError
+	 * @param callable(?int $exitCode, string $output) : void $onExit
+	 */
+	public function start(callable $onData, callable $onError, callable $onExit): void
+	{
+		$tmpStdOut = tmpfile();
+		if ($tmpStdOut === false) {
+			throw new ShouldNotHappenException('Failed creating temp file for stdout.');
+		}
+		$tmpStdErr = tmpfile();
+		if ($tmpStdErr === false) {
+			throw new ShouldNotHappenException('Failed creating temp file for stderr.');
+		}
+		$this->stdOut = $tmpStdOut;
+		$this->stdErr = $tmpStdErr;
+		$this->process = new \React\ChildProcess\Process($this->command, null, null, [
+			1 => $this->stdOut,
+			2 => $this->stdErr,
+		]);
+		$this->process->start($this->loop);
+		$this->onData = $onData;
+		$this->onError = $onError;
+		$this->process->on('exit', function ($exitCode) use ($onExit): void {
+			$this->cancelTimer();
+
+			$output = '';
+			rewind($this->stdOut);
+			$stdOut = stream_get_contents($this->stdOut);
+			if (is_string($stdOut)) {
+				$output .= $stdOut;
+			}
+
+			rewind($this->stdErr);
+			$stdErr = stream_get_contents($this->stdErr);
+			if (is_string($stdErr)) {
+				$output .= $stdErr;
+			}
+			$onExit($exitCode, $output);
+			fclose($this->stdOut);
+			fclose($this->stdErr);
+		});
+	}
+
+	private function cancelTimer(): void
+	{
+		if ($this->timer === null) {
+			return;
+		}
+
+		$this->loop->cancelTimer($this->timer);
+		$this->timer = null;
+	}
+
+	/**
+	 * @param mixed[] $data
+	 */
+	public function request(array $data): void
+	{
+		$this->cancelTimer();
+		if ($this->in === null) {
+			throw new ShouldNotHappenException();
+		}
+		$this->in->write($data);
+		$this->timer = $this->loop->addTimer($this->timeoutSeconds, function (): void {
+			$onError = $this->onError;
+			$onError(new ProcessTimedOutException(sprintf('Child process timed out after %.1f seconds. Try making it longer with parallel.processTimeout setting.', $this->timeoutSeconds)));
+		});
+	}
+
+	public function quit(): void
+	{
+		$this->cancelTimer();
+		if (!$this->process->isRunning()) {
+			return;
+		}
+
+		foreach ($this->process->pipes as $pipe) {
+			$pipe->close();
+		}
+
+		if ($this->in === null) {
+			return;
+		}
+
+		$this->in->end();
+	}
+
+	public function bindConnection(ReadableStreamInterface $out, WritableStreamInterface $in): void
+	{
+		$out->on('data', function (array $json): void {
+			$this->cancelTimer();
+			if ($json['action'] !== 'result') {
+				return;
+			}
+
+			$onData = $this->onData;
+			$onData($json['result']);
+		});
+		$this->in = $in;
+		$out->on('error', function (Throwable $error): void {
+			$onError = $this->onError;
+			$onError($error);
+		});
+		$in->on('error', function (Throwable $error): void {
+			$onError = $this->onError;
+			$onError($error);
+		});
+	}
+
+}
diff --git a/src/Parallel/ProcessPool.php b/src/Parallel/ProcessPool.php
new file mode 100644
index 00000000..97d62e7f
--- /dev/null
+++ b/src/Parallel/ProcessPool.php
@@ -0,0 +1,74 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use React\Socket\TcpServer;
+use function array_key_exists;
+use function array_keys;
+use function count;
+use function sprintf;
+
+final class ProcessPool
+{
+
+	/** @var array<string, Process> */
+	private array $processes = [];
+
+	/** @var callable(): void */
+	private $onServerClose;
+
+	/**
+	 * @param callable(): void $onServerClose
+	 */
+	public function __construct(private TcpServer $server, callable $onServerClose)
+	{
+		$this->onServerClose = $onServerClose;
+	}
+
+	public function getProcess(string $identifier): Process
+	{
+		if (!array_key_exists($identifier, $this->processes)) {
+			throw new ShouldNotHappenException(sprintf('Process %s not found.', $identifier));
+		}
+
+		return $this->processes[$identifier];
+	}
+
+	public function attachProcess(string $identifier, Process $process): void
+	{
+		$this->processes[$identifier] = $process;
+	}
+
+	public function tryQuitProcess(string $identifier): void
+	{
+		if (!array_key_exists($identifier, $this->processes)) {
+			return;
+		}
+
+		$this->quitProcess($identifier);
+	}
+
+	private function quitProcess(string $identifier): void
+	{
+		$process = $this->getProcess($identifier);
+		$process->quit();
+		unset($this->processes[$identifier]);
+		if (count($this->processes) !== 0) {
+			return;
+		}
+
+		$this->server->close();
+		$callback = $this->onServerClose;
+		$callback();
+	}
+
+	public function quitAll(): void
+	{
+		foreach (array_keys($this->processes) as $identifier) {
+			$this->quitProcess($identifier);
+		}
+	}
+
+}
diff --git a/src/Parallel/ProcessTimedOutException.php b/src/Parallel/ProcessTimedOutException.php
new file mode 100644
index 00000000..fd048ad8
--- /dev/null
+++ b/src/Parallel/ProcessTimedOutException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+use Exception;
+
+final class ProcessTimedOutException extends Exception
+{
+
+}
diff --git a/src/Parallel/Schedule.php b/src/Parallel/Schedule.php
new file mode 100644
index 00000000..78292b2d
--- /dev/null
+++ b/src/Parallel/Schedule.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+final class Schedule
+{
+
+	/**
+	 * @param array<array<string>> $jobs
+	 */
+	public function __construct(private int $numberOfProcesses, private array $jobs)
+	{
+	}
+
+	public function getNumberOfProcesses(): int
+	{
+		return $this->numberOfProcesses;
+	}
+
+	/**
+	 * @return array<array<string>>
+	 */
+	public function getJobs(): array
+	{
+		return $this->jobs;
+	}
+
+}
diff --git a/src/Parallel/Scheduler.php b/src/Parallel/Scheduler.php
new file mode 100644
index 00000000..d1489632
--- /dev/null
+++ b/src/Parallel/Scheduler.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\Parallel;
+return;
+
+use PHPStan\Command\Output;
+use PHPStan\Diagnose\DiagnoseExtension;
+use function array_chunk;
+use function count;
+use function floor;
+use function max;
+use function min;
+use function sprintf;
+
+final class Scheduler implements DiagnoseExtension
+{
+
+	/** @var array{int, int, int, int}|null */
+	private ?array $storedData = null;
+
+	/**
+	 * @param positive-int $jobSize
+	 * @param positive-int $maximumNumberOfProcesses
+	 * @param positive-int $minimumNumberOfJobsPerProcess
+	 */
+	public function __construct(
+		private int $jobSize,
+		private int $maximumNumberOfProcesses,
+		private int $minimumNumberOfJobsPerProcess,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string> $files
+	 */
+	public function scheduleWork(
+		int $cpuCores,
+		array $files,
+	): Schedule
+	{
+		$jobs = array_chunk($files, $this->jobSize);
+		$numberOfProcesses = min(
+			max((int) floor(count($jobs) / $this->minimumNumberOfJobsPerProcess), 1),
+			$cpuCores,
+		);
+
+		$usedNumberOfProcesses = min($numberOfProcesses, $this->maximumNumberOfProcesses);
+		$this->storedData = [$cpuCores, count($files), count($jobs), $usedNumberOfProcesses];
+
+		return new Schedule($usedNumberOfProcesses, $jobs);
+	}
+
+	public function print(Output $output): void
+	{
+		if ($this->storedData === null) {
+			return;
+		}
+
+		[$cpuCores, $filesCount, $jobsCount, $usedNumberOfProcesses] = $this->storedData;
+
+		$output->writeLineFormatted('<info>Parallel processing scheduler:</info>');
+		$output->writeLineFormatted(sprintf(
+			'# of detected CPU %s:  %s%d',
+			$cpuCores === 1 ? 'core' : 'cores',
+			$cpuCores === 1 ? '' : ' ',
+			$cpuCores,
+		));
+		$output->writeLineFormatted(sprintf('# of analysed files:       %d', $filesCount));
+		$output->writeLineFormatted(sprintf('# of jobs:                 %d', $jobsCount));
+		$output->writeLineFormatted(sprintf('# of spawned processes:    %d', $usedNumberOfProcesses));
+		$output->writeLineFormatted('');
+	}
+
+}
diff --git a/src/Parser/AnonymousClassVisitor.php b/src/Parser/AnonymousClassVisitor.php
new file mode 100644
index 00000000..847b034d
--- /dev/null
+++ b/src/Parser/AnonymousClassVisitor.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Node\AnonymousClassNode;
+use function count;
+
+final class AnonymousClassVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_LINE_INDEX = 'anonymousClassLineIndex';
+
+	/** @var array<int, non-empty-list<AnonymousClassNode>> */
+	private array $nodesPerLine = [];
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->nodesPerLine = [];
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Stmt\Class_ || !$node->isAnonymous()) {
+			return null;
+		}
+
+		$node = AnonymousClassNode::createFromClassNode($node);
+		$node->setAttribute('anonymousClass', true); // We keep this for backward compatibility
+		$this->nodesPerLine[$node->getStartLine()][] = $node;
+
+		return $node;
+	}
+
+	public function afterTraverse(array $nodes): ?array
+	{
+		foreach ($this->nodesPerLine as $nodesOnLine) {
+			if (count($nodesOnLine) === 1) {
+				continue;
+			}
+			for ($i = 0; $i < count($nodesOnLine); $i++) {
+				$nodesOnLine[$i]->setAttribute(self::ATTRIBUTE_LINE_INDEX, $i + 1);
+			}
+		}
+
+		$this->nodesPerLine = [];
+		return null;
+	}
+
+}
diff --git a/src/Parser/ArrayFilterArgVisitor.php b/src/Parser/ArrayFilterArgVisitor.php
new file mode 100644
index 00000000..1705e2fd
--- /dev/null
+++ b/src/Parser/ArrayFilterArgVisitor.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class ArrayFilterArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isArrayFilterArg';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+			$functionName = $node->name->toLowerString();
+			if ($functionName === 'array_filter') {
+				$args = $node->getRawArgs();
+				if (isset($args[0])) {
+					$args[0]->setAttribute(self::ATTRIBUTE_NAME, true);
+				}
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ArrayFindArgVisitor.php b/src/Parser/ArrayFindArgVisitor.php
new file mode 100644
index 00000000..b3e9a661
--- /dev/null
+++ b/src/Parser/ArrayFindArgVisitor.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function in_array;
+
+final class ArrayFindArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isArrayFindArg';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+			$functionName = $node->name->toLowerString();
+			if (in_array($functionName, ['array_all', 'array_any', 'array_find', 'array_find_key'], true)) {
+				$args = $node->getRawArgs();
+				if (isset($args[0])) {
+					$args[0]->setAttribute(self::ATTRIBUTE_NAME, true);
+				}
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ArrayMapArgVisitor.php b/src/Parser/ArrayMapArgVisitor.php
new file mode 100644
index 00000000..7b0d9885
--- /dev/null
+++ b/src/Parser/ArrayMapArgVisitor.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function array_slice;
+use function count;
+
+final class ArrayMapArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'arrayMapArgs';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name && !$node->isFirstClassCallable()) {
+			$functionName = $node->name->toLowerString();
+			if ($functionName === 'array_map') {
+				$args = $node->getArgs();
+				if (isset($args[0])) {
+					$slicedArgs = array_slice($args, 1);
+					if (count($slicedArgs) > 0) {
+						$args[0]->value->setAttribute(self::ATTRIBUTE_NAME, $slicedArgs);
+					}
+				}
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ArrayWalkArgVisitor.php b/src/Parser/ArrayWalkArgVisitor.php
new file mode 100644
index 00000000..8610dc83
--- /dev/null
+++ b/src/Parser/ArrayWalkArgVisitor.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class ArrayWalkArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isArrayWalkArg';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+			$functionName = $node->name->toLowerString();
+			if ($functionName === 'array_walk') {
+				$args = $node->getRawArgs();
+				if (isset($args[0])) {
+					$args[0]->setAttribute(self::ATTRIBUTE_NAME, true);
+				}
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ArrowFunctionArgVisitor.php b/src/Parser/ArrowFunctionArgVisitor.php
new file mode 100644
index 00000000..ff9b329f
--- /dev/null
+++ b/src/Parser/ArrowFunctionArgVisitor.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function count;
+
+final class ArrowFunctionArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'arrowFunctionCallArgs';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Expr\FuncCall) {
+			return null;
+		}
+
+		if ($node->isFirstClassCallable()) {
+			return null;
+		}
+
+		if ($node->name instanceof Node\Expr\Assign && $node->name->expr instanceof Node\Expr\ArrowFunction) {
+			$arrow = $node->name->expr;
+		} elseif ($node->name instanceof Node\Expr\ArrowFunction) {
+			$arrow = $node->name;
+		} else {
+			return null;
+		}
+
+		$args = $node->getArgs();
+
+		if (count($args) > 0) {
+			$arrow->setAttribute(self::ATTRIBUTE_NAME, $args);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/CachedParser.php b/src/Parser/CachedParser.php
new file mode 100644
index 00000000..2bf99b38
--- /dev/null
+++ b/src/Parser/CachedParser.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PHPStan\File\FileReader;
+use function array_slice;
+
+final class CachedParser implements Parser
+{
+
+	/** @var array<string, Node\Stmt[]>*/
+	private array $cachedNodesByString = [];
+
+	private int $cachedNodesByStringCount = 0;
+
+	/** @var array<string, true> */
+	private array $parsedByString = [];
+
+	public function __construct(
+		private Parser $originalParser,
+		private int $cachedNodesByStringCountMax,
+	)
+	{
+	}
+
+	/**
+	 * @param string $file path to a file to parse
+	 * @return Node\Stmt[]
+	 */
+	public function parseFile(string $file): array
+	{
+		if ($this->cachedNodesByStringCountMax !== 0 && $this->cachedNodesByStringCount >= $this->cachedNodesByStringCountMax) {
+			$this->cachedNodesByString = array_slice(
+				$this->cachedNodesByString,
+				1,
+				null,
+				true,
+			);
+
+			--$this->cachedNodesByStringCount;
+		}
+
+		$sourceCode = FileReader::read($file);
+		if (!isset($this->cachedNodesByString[$sourceCode]) || isset($this->parsedByString[$sourceCode])) {
+			$this->cachedNodesByString[$sourceCode] = $this->originalParser->parseFile($file);
+			$this->cachedNodesByStringCount++;
+			unset($this->parsedByString[$sourceCode]);
+		}
+
+		return $this->cachedNodesByString[$sourceCode];
+	}
+
+	/**
+	 * @return Node\Stmt[]
+	 */
+	public function parseString(string $sourceCode): array
+	{
+		if ($this->cachedNodesByStringCountMax !== 0 && $this->cachedNodesByStringCount >= $this->cachedNodesByStringCountMax) {
+			$this->cachedNodesByString = array_slice(
+				$this->cachedNodesByString,
+				1,
+				null,
+				true,
+			);
+
+			--$this->cachedNodesByStringCount;
+		}
+
+		if (!isset($this->cachedNodesByString[$sourceCode])) {
+			$this->cachedNodesByString[$sourceCode] = $this->originalParser->parseString($sourceCode);
+			$this->cachedNodesByStringCount++;
+			$this->parsedByString[$sourceCode] = true;
+		}
+
+		return $this->cachedNodesByString[$sourceCode];
+	}
+
+	public function getCachedNodesByStringCount(): int
+	{
+		return $this->cachedNodesByStringCount;
+	}
+
+	public function getCachedNodesByStringCountMax(): int
+	{
+		return $this->cachedNodesByStringCountMax;
+	}
+
+	/**
+	 * @return array<string, Node[]>
+	 */
+	public function getCachedNodesByString(): array
+	{
+		return $this->cachedNodesByString;
+	}
+
+}
diff --git a/src/Parser/CleaningParser.php b/src/Parser/CleaningParser.php
new file mode 100644
index 00000000..965cf6d1
--- /dev/null
+++ b/src/Parser/CleaningParser.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node\Stmt;
+use PhpParser\NodeTraverser;
+use PHPStan\Php\PhpVersion;
+
+final class CleaningParser implements Parser
+{
+
+	private NodeTraverser $traverser;
+
+	public function __construct(private Parser $wrappedParser, PhpVersion $phpVersion)
+	{
+		$this->traverser = new NodeTraverser();
+		$this->traverser->addVisitor(new CleaningVisitor());
+		$this->traverser->addVisitor(new RemoveUnusedCodeByPhpVersionIdVisitor($phpVersion->getVersionString()));
+	}
+
+	public function parseFile(string $file): array
+	{
+		return $this->clean($this->wrappedParser->parseFile($file));
+	}
+
+	public function parseString(string $sourceCode): array
+	{
+		return $this->clean($this->wrappedParser->parseString($sourceCode));
+	}
+
+	/**
+	 * @param Stmt[] $ast
+	 * @return Stmt[]
+	 */
+	private function clean(array $ast): array
+	{
+		/** @var Stmt[] */
+		return $this->traverser->traverse($ast);
+	}
+
+}
diff --git a/src/Parser/CleaningVisitor.php b/src/Parser/CleaningVisitor.php
new file mode 100644
index 00000000..7230cec9
--- /dev/null
+++ b/src/Parser/CleaningVisitor.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeFinder;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Reflection\ParametersAcceptor;
+use function in_array;
+use function is_array;
+
+final class CleaningVisitor extends NodeVisitorAbstract
+{
+
+	private NodeFinder $nodeFinder;
+
+	public function __construct()
+	{
+		$this->nodeFinder = new NodeFinder();
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Stmt\Function_) {
+			$node->stmts = $this->keepVariadicsAndYields($node->stmts, null);
+			return $node;
+		}
+
+		if ($node instanceof Node\Stmt\ClassMethod && $node->stmts !== null) {
+			$node->stmts = $this->keepVariadicsAndYields($node->stmts, null);
+			return $node;
+		}
+
+		if ($node instanceof Node\Expr\Closure) {
+			$node->stmts = $this->keepVariadicsAndYields($node->stmts, null);
+			return $node;
+		}
+
+		if ($node instanceof Node\PropertyHook && is_array($node->body)) {
+			$propertyName = $node->getAttribute('propertyName');
+			if ($propertyName !== null) {
+				$node->body = $this->keepVariadicsAndYields($node->body, $propertyName);
+				return $node;
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param Node\Stmt[] $stmts
+	 * @return Node\Stmt[]
+	 */
+	private function keepVariadicsAndYields(array $stmts, ?string $hookedPropertyName): array
+	{
+		$results = $this->nodeFinder->find($stmts, static function (Node $node) use ($hookedPropertyName): bool {
+			if ($node instanceof Node\Expr\YieldFrom || $node instanceof Node\Expr\Yield_) {
+				return true;
+			}
+			if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+				return in_array($node->name->toLowerString(), ParametersAcceptor::VARIADIC_FUNCTIONS, true);
+			}
+
+			if ($node instanceof Node\Expr\Closure || $node instanceof Node\Expr\ArrowFunction) {
+				return true;
+			}
+
+			if ($hookedPropertyName !== null) {
+				if (
+					$node instanceof Node\Expr\PropertyFetch
+					&& $node->var instanceof Node\Expr\Variable
+					&& $node->var->name === 'this'
+					&& $node->name instanceof Node\Identifier
+					&& $node->name->toString() === $hookedPropertyName
+				) {
+					return true;
+				}
+			}
+
+			return false;
+		});
+		$newStmts = [];
+		foreach ($results as $result) {
+			if (
+				$result instanceof Node\Expr\Yield_
+				|| $result instanceof Node\Expr\YieldFrom
+				|| $result instanceof Node\Expr\Closure
+				|| $result instanceof Node\Expr\ArrowFunction
+				|| $result instanceof Node\Expr\PropertyFetch
+			) {
+				$newStmts[] = new Node\Stmt\Expression($result);
+				continue;
+			}
+			if (!$result instanceof Node\Expr\FuncCall) {
+				continue;
+			}
+
+			$newStmts[] = new Node\Stmt\Expression(new Node\Expr\FuncCall(new Node\Name\FullyQualified('func_get_args')));
+		}
+
+		return $newStmts;
+	}
+
+}
diff --git a/src/Parser/ClosureArgVisitor.php b/src/Parser/ClosureArgVisitor.php
new file mode 100644
index 00000000..4e8f46a8
--- /dev/null
+++ b/src/Parser/ClosureArgVisitor.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function count;
+
+final class ClosureArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'closureCallArgs';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Expr\FuncCall) {
+			return null;
+		}
+
+		if ($node->isFirstClassCallable()) {
+			return null;
+		}
+
+		if ($node->name instanceof Node\Expr\Assign && $node->name->expr instanceof Node\Expr\Closure) {
+			$closure = $node->name->expr;
+		} elseif ($node->name instanceof Node\Expr\Closure) {
+			$closure = $node->name;
+		} else {
+			return null;
+		}
+
+		$args = $node->getArgs();
+
+		if (count($args) > 0) {
+			$closure->setAttribute(self::ATTRIBUTE_NAME, $args);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/ClosureBindArgVisitor.php b/src/Parser/ClosureBindArgVisitor.php
new file mode 100644
index 00000000..279345e6
--- /dev/null
+++ b/src/Parser/ClosureBindArgVisitor.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Identifier;
+use PhpParser\NodeVisitorAbstract;
+use function count;
+
+final class ClosureBindArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'closureBindArg';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (
+			$node instanceof Node\Expr\StaticCall
+			&& $node->class instanceof Node\Name
+			&& $node->class->toLowerString() === 'closure'
+			&& $node->name instanceof Identifier
+			&& $node->name->toLowerString() === 'bind'
+			&& !$node->isFirstClassCallable()
+		) {
+			$args = $node->getArgs();
+			if (count($args) > 1) {
+				$args[0]->setAttribute(self::ATTRIBUTE_NAME, true);
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ClosureBindToVarVisitor.php b/src/Parser/ClosureBindToVarVisitor.php
new file mode 100644
index 00000000..e550986a
--- /dev/null
+++ b/src/Parser/ClosureBindToVarVisitor.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Identifier;
+use PhpParser\NodeVisitorAbstract;
+
+final class ClosureBindToVarVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'closureBindToVar';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (
+			$node instanceof Node\Expr\MethodCall
+			&& $node->name instanceof Identifier
+			&& $node->name->toLowerString() === 'bindto'
+			&& !$node->isFirstClassCallable()
+		) {
+			$args = $node->getArgs();
+			if (isset($args[0])) {
+				$args[0]->setAttribute(self::ATTRIBUTE_NAME, $node->var);
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/CurlSetOptArgVisitor.php b/src/Parser/CurlSetOptArgVisitor.php
new file mode 100644
index 00000000..c8357766
--- /dev/null
+++ b/src/Parser/CurlSetOptArgVisitor.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class CurlSetOptArgVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isCurlSetOptArg';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+			$functionName = $node->name->toLowerString();
+			if ($functionName === 'curl_setopt') {
+				$args = $node->getRawArgs();
+				if (isset($args[0])) {
+					$args[0]->setAttribute(self::ATTRIBUTE_NAME, true);
+				}
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/DeclarePositionVisitor.php b/src/Parser/DeclarePositionVisitor.php
new file mode 100644
index 00000000..8bf21c65
--- /dev/null
+++ b/src/Parser/DeclarePositionVisitor.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function str_starts_with;
+
+final class DeclarePositionVisitor extends NodeVisitorAbstract
+{
+
+	private bool $isFirstStatement = true;
+
+	public const ATTRIBUTE_NAME = 'isFirstStatement';
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->isFirstStatement = true;
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		// ignore shebang
+		if (
+			$this->isFirstStatement
+			&& $node instanceof Node\Stmt\InlineHTML
+			&& str_starts_with($node->value, '#!')
+		) {
+			return null;
+		}
+
+		if ($node instanceof Node\Stmt) {
+			if ($node instanceof Node\Stmt\Declare_) {
+				$node->setAttribute(self::ATTRIBUTE_NAME, $this->isFirstStatement);
+			}
+
+			$this->isFirstStatement = false;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/ImmediatelyInvokedClosureVisitor.php b/src/Parser/ImmediatelyInvokedClosureVisitor.php
new file mode 100644
index 00000000..8763e588
--- /dev/null
+++ b/src/Parser/ImmediatelyInvokedClosureVisitor.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class ImmediatelyInvokedClosureVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isImmediatelyInvokedClosure';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Expr\Closure) {
+			$node->name->setAttribute(self::ATTRIBUTE_NAME, true);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/LastConditionVisitor.php b/src/Parser/LastConditionVisitor.php
new file mode 100644
index 00000000..bf2eea13
--- /dev/null
+++ b/src/Parser/LastConditionVisitor.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function count;
+
+final class LastConditionVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isLastCondition';
+	public const ATTRIBUTE_IS_MATCH_NAME = 'isMatch';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Stmt\If_ && $node->elseifs !== []) {
+			$lastElseIf = count($node->elseifs) - 1;
+
+			$elseIsMissingOrThrowing = $node->else === null
+				|| (
+					count($node->else->stmts) === 1
+					&& $node->else->stmts[0] instanceof Node\Stmt\Expression
+					&& $node->else->stmts[0]->expr instanceof Node\Expr\Throw_
+				);
+
+			foreach ($node->elseifs as $i => $elseif) {
+				$isLast = $i === $lastElseIf && $elseIsMissingOrThrowing;
+				$elseif->cond->setAttribute(self::ATTRIBUTE_NAME, $isLast);
+			}
+		}
+
+		if ($node instanceof Node\Expr\Match_ && $node->arms !== []) {
+			$lastArm = count($node->arms) - 1;
+
+			foreach ($node->arms as $i => $arm) {
+				if ($arm->conds === null || $arm->conds === []) {
+					continue;
+				}
+
+				$isLast = $i === $lastArm;
+				$index = count($arm->conds) - 1;
+				$arm->conds[$index]->setAttribute(self::ATTRIBUTE_NAME, $isLast);
+				$arm->conds[$index]->setAttribute(self::ATTRIBUTE_IS_MATCH_NAME, true);
+			}
+		}
+
+		if (
+			$node instanceof Node\Stmt\Function_
+			|| $node instanceof Node\Stmt\ClassMethod
+			|| $node instanceof Node\Stmt\If_
+			|| $node instanceof Node\Stmt\ElseIf_
+			|| $node instanceof Node\Stmt\Else_
+			|| $node instanceof Node\Stmt\Case_
+			|| $node instanceof Node\Stmt\Catch_
+			|| $node instanceof Node\Stmt\Do_
+			|| $node instanceof Node\Stmt\Finally_
+			|| $node instanceof Node\Stmt\For_
+			|| $node instanceof Node\Stmt\Foreach_
+			|| $node instanceof Node\Stmt\Namespace_
+			|| $node instanceof Node\Stmt\TryCatch
+			|| $node instanceof Node\Stmt\While_
+		) {
+			$statements = $node->stmts ?? [];
+			$statementCount = count($statements);
+
+			if ($statementCount < 2) {
+				return null;
+			}
+
+			$lastStatement = $statements[$statementCount - 1];
+
+			if (!$lastStatement instanceof Node\Stmt\Expression) {
+				return null;
+			}
+
+			if (!$lastStatement->expr instanceof Node\Expr\Throw_) {
+				return null;
+			}
+
+			if (!$statements[$statementCount - 2] instanceof Node\Stmt\If_ || $statements[$statementCount - 2]->else !== null) {
+				return null;
+			}
+
+			$if = $statements[$statementCount - 2];
+			$cond = count($if->elseifs) > 0 ? $if->elseifs[count($if->elseifs) - 1]->cond : $if->cond;
+			$cond->setAttribute(self::ATTRIBUTE_NAME, true);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/LexerFactory.php b/src/Parser/LexerFactory.php
new file mode 100644
index 00000000..f44dbeeb
--- /dev/null
+++ b/src/Parser/LexerFactory.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Lexer;
+use PHPStan\Php\PhpVersion;
+use const PHP_VERSION_ID;
+
+final class LexerFactory
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function create(): Lexer
+	{
+		if ($this->phpVersion->getVersionId() === PHP_VERSION_ID) {
+			return new Lexer();
+		}
+
+		return new Lexer\Emulative(\PhpParser\PhpVersion::fromString($this->phpVersion->getVersionString()));
+	}
+
+	public function createEmulative(): Lexer\Emulative
+	{
+		return new Lexer\Emulative();
+	}
+
+}
diff --git a/src/Parser/LineAttributesVisitor.php b/src/Parser/LineAttributesVisitor.php
new file mode 100644
index 00000000..55acf631
--- /dev/null
+++ b/src/Parser/LineAttributesVisitor.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class LineAttributesVisitor extends NodeVisitorAbstract
+{
+
+	public function __construct(private ?int $startLine, private ?int $endLine)
+	{
+	}
+
+	public function enterNode(Node $node): Node
+	{
+		if ($node->getStartLine() === -1) {
+			$node->setAttribute('startLine', $this->startLine);
+		}
+
+		if ($node->getEndLine() === -1) {
+			$node->setAttribute('endLine', $this->endLine);
+		}
+
+		return $node;
+	}
+
+}
diff --git a/src/Parser/MagicConstantParamDefaultVisitor.php b/src/Parser/MagicConstantParamDefaultVisitor.php
new file mode 100644
index 00000000..aab77700
--- /dev/null
+++ b/src/Parser/MagicConstantParamDefaultVisitor.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class MagicConstantParamDefaultVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'isMagicConstantParamDefault';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Param && $node->default instanceof Node\Scalar\MagicConst) {
+			$node->default->setAttribute(self::ATTRIBUTE_NAME, true);
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/NewAssignedToPropertyVisitor.php b/src/Parser/NewAssignedToPropertyVisitor.php
new file mode 100644
index 00000000..320dbd71
--- /dev/null
+++ b/src/Parser/NewAssignedToPropertyVisitor.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class NewAssignedToPropertyVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'assignedToProperty';
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\Assign || $node instanceof Node\Expr\AssignRef) {
+			if (
+				($node->var instanceof Node\Expr\PropertyFetch || $node->var instanceof Node\Expr\StaticPropertyFetch)
+				&& $node->expr instanceof Node\Expr\New_
+			) {
+				$node->expr->setAttribute(self::ATTRIBUTE_NAME, $node->var);
+			}
+		}
+		return null;
+	}
+
+}
diff --git a/src/Parser/ParentStmtTypesVisitor.php b/src/Parser/ParentStmtTypesVisitor.php
new file mode 100644
index 00000000..4bc0306b
--- /dev/null
+++ b/src/Parser/ParentStmtTypesVisitor.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function array_pop;
+use function count;
+use function get_class;
+
+final class ParentStmtTypesVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'parentStmtTypes';
+
+	/** @var array<int, class-string<Node\Stmt|Node\Expr\Closure>> */
+	private array $typeStack = [];
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->typeStack = [];
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Stmt && !$node instanceof Node\Expr\Closure) {
+			return null;
+		}
+
+		if (count($this->typeStack) > 0) {
+			$node->setAttribute(self::ATTRIBUTE_NAME, $this->typeStack);
+		}
+		$this->typeStack[] = get_class($node);
+
+		return null;
+	}
+
+	public function leaveNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Stmt && !$node instanceof Node\Expr\Closure) {
+			return null;
+		}
+
+		array_pop($this->typeStack);
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/Parser.php b/src/Parser/Parser.php
new file mode 100644
index 00000000..7e1551b7
--- /dev/null
+++ b/src/Parser/Parser.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+
+/** @api */
+interface Parser
+{
+
+	/**
+	 * @param string $file path to a file to parse
+	 * @return Node\Stmt[]
+	 * @throws ParserErrorsException
+	 */
+	public function parseFile(string $file): array;
+
+	/**
+	 * @return Node\Stmt[]
+	 * @throws ParserErrorsException
+	 */
+	public function parseString(string $sourceCode): array;
+
+}
diff --git a/src/Parser/ParserErrorsException.php b/src/Parser/ParserErrorsException.php
new file mode 100644
index 00000000..feb3efbf
--- /dev/null
+++ b/src/Parser/ParserErrorsException.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use Exception;
+use PhpParser\Error;
+use function array_map;
+use function count;
+use function implode;
+
+final class ParserErrorsException extends Exception
+{
+
+	/** @var mixed[] */
+	private array $attributes;
+
+	/**
+	 * @param Error[] $errors
+	 */
+	public function __construct(
+		private array $errors,
+		private ?string $parsedFile,
+	)
+	{
+		parent::__construct(implode(', ', array_map(static fn (Error $error): string => $error->getRawMessage(), $errors)));
+		if (count($errors) > 0) {
+			$this->attributes = $errors[0]->getAttributes();
+		} else {
+			$this->attributes = [];
+		}
+	}
+
+	/**
+	 * @return Error[]
+	 */
+	public function getErrors(): array
+	{
+		return $this->errors;
+	}
+
+	public function getParsedFile(): ?string
+	{
+		return $this->parsedFile;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Parser/PathRoutingParser.php b/src/Parser/PathRoutingParser.php
new file mode 100644
index 00000000..df70b8db
--- /dev/null
+++ b/src/Parser/PathRoutingParser.php
@@ -0,0 +1,81 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PHPStan\File\FileHelper;
+use function array_fill_keys;
+use function array_slice;
+use function count;
+use function explode;
+use function implode;
+use function is_link;
+use function realpath;
+use function str_contains;
+use const DIRECTORY_SEPARATOR;
+
+final class PathRoutingParser implements Parser
+{
+
+	/** @var bool[] filePath(string) => bool(true) */
+	private array $analysedFiles = [];
+
+	public function __construct(
+		private FileHelper $fileHelper,
+		private Parser $currentPhpVersionRichParser,
+		private Parser $currentPhpVersionSimpleParser,
+		private Parser $php8Parser,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $files
+	 */
+	public function setAnalysedFiles(array $files): void
+	{
+		$this->analysedFiles = array_fill_keys($files, true);
+	}
+
+	public function parseFile(string $file): array
+	{
+		$normalizedPath = $this->fileHelper->normalizePath($file, '/');
+		if (str_contains($normalizedPath, 'vendor/jetbrains/phpstorm-stubs')) {
+			return $this->php8Parser->parseFile($file);
+		}
+		if (str_contains($normalizedPath, 'vendor/phpstan/php-8-stubs/stubs')) {
+			return $this->php8Parser->parseFile($file);
+		}
+
+		$file = $this->fileHelper->normalizePath($file);
+		if (!isset($this->analysedFiles[$file])) {
+			// check symlinked file that still might be in analysedFiles
+			$pathParts = explode(DIRECTORY_SEPARATOR, $file);
+			for ($i = count($pathParts); $i > 1; $i--) {
+				$joinedPartOfPath = implode(DIRECTORY_SEPARATOR, array_slice($pathParts, 0, $i));
+				if (!@is_link($joinedPartOfPath)) {
+					continue;
+				}
+
+				$realFilePath = realpath($file);
+				if ($realFilePath !== false) {
+					$normalizedRealFilePath = $this->fileHelper->normalizePath($realFilePath);
+					if (isset($this->analysedFiles[$normalizedRealFilePath])) {
+						return $this->currentPhpVersionRichParser->parseFile($file);
+					}
+				}
+				break;
+			}
+
+			return $this->currentPhpVersionSimpleParser->parseFile($file);
+		}
+
+		return $this->currentPhpVersionRichParser->parseFile($file);
+	}
+
+	public function parseString(string $sourceCode): array
+	{
+		return $this->currentPhpVersionSimpleParser->parseString($sourceCode);
+	}
+
+}
diff --git a/src/Parser/PhpParserDecorator.php b/src/Parser/PhpParserDecorator.php
new file mode 100644
index 00000000..941c53d7
--- /dev/null
+++ b/src/Parser/PhpParserDecorator.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Error;
+use PhpParser\ErrorHandler;
+use PhpParser\Node;
+use PhpParser\Parser;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+
+final class PhpParserDecorator implements Parser
+{
+
+	public function __construct(private \PHPStan\Parser\Parser $wrappedParser)
+	{
+	}
+
+	/**
+	 * @return Node\Stmt[]
+	 */
+	public function parse(string $code, ?ErrorHandler $errorHandler = null): array
+	{
+		try {
+			return $this->wrappedParser->parseString($code);
+		} catch (ParserErrorsException $e) {
+			$message = $e->getMessage();
+			if ($e->getParsedFile() !== null) {
+				$message .= sprintf(' in file %s', $e->getParsedFile());
+			}
+			throw new Error($message, $e->getAttributes());
+		}
+	}
+
+	public function getTokens(): array
+	{
+		throw new ShouldNotHappenException('PhpParserDecorator::getTokens() should not be called');
+	}
+
+}
diff --git a/src/Parser/PhpParserFactory.php b/src/Parser/PhpParserFactory.php
new file mode 100644
index 00000000..b1283ff2
--- /dev/null
+++ b/src/Parser/PhpParserFactory.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Lexer;
+use PhpParser\Parser\Php7;
+use PhpParser\Parser\Php8;
+use PhpParser\ParserAbstract;
+use PHPStan\Php\PhpVersion;
+
+final class PhpParserFactory
+{
+
+	public function __construct(private Lexer $lexer, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function create(): ParserAbstract
+	{
+		$phpVersion = \PhpParser\PhpVersion::fromString($this->phpVersion->getVersionString());
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			return new Php8($this->lexer, $phpVersion);
+		}
+
+		return new Php7($this->lexer, $phpVersion);
+	}
+
+}
diff --git a/src/Parser/RemoveUnusedCodeByPhpVersionIdVisitor.php b/src/Parser/RemoveUnusedCodeByPhpVersionIdVisitor.php
new file mode 100644
index 00000000..d03bdd1a
--- /dev/null
+++ b/src/Parser/RemoveUnusedCodeByPhpVersionIdVisitor.php
@@ -0,0 +1,99 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Php\PhpVersion;
+use function count;
+use function version_compare;
+
+final class RemoveUnusedCodeByPhpVersionIdVisitor extends NodeVisitorAbstract
+{
+
+	public function __construct(private string $phpVersionString)
+	{
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Stmt\If_) {
+			return null;
+		}
+
+		if (count($node->elseifs) > 0) {
+			return null;
+		}
+
+		if ($node->else === null) {
+			return null;
+		}
+
+		$cond = $node->cond;
+		if (
+			!$cond instanceof Node\Expr\BinaryOp\Smaller
+			&& !$cond instanceof Node\Expr\BinaryOp\SmallerOrEqual
+			&& !$cond instanceof Node\Expr\BinaryOp\Greater
+			&& !$cond instanceof Node\Expr\BinaryOp\GreaterOrEqual
+			&& !$cond instanceof Node\Expr\BinaryOp\Equal
+			&& !$cond instanceof Node\Expr\BinaryOp\NotEqual
+			&& !$cond instanceof Node\Expr\BinaryOp\Identical
+			&& !$cond instanceof Node\Expr\BinaryOp\NotIdentical
+		) {
+			return null;
+		}
+
+		$operator = $cond->getOperatorSigil();
+		if ($operator === '===') {
+			$operator = '==';
+		} elseif ($operator === '!==') {
+			$operator = '!=';
+		}
+
+		$operands = $this->getOperands($cond->left, $cond->right);
+		if ($operands === null) {
+			return null;
+		}
+
+		$result = version_compare($operands[0], $operands[1], $operator);
+		if ($result) {
+			// remove else
+			$node->cond = new Node\Expr\ConstFetch(new Node\Name('true'));
+			$node->else = null;
+
+			return $node;
+		}
+
+		// remove if
+		$node->cond = new Node\Expr\ConstFetch(new Node\Name('false'));
+		$node->stmts = [];
+
+		return $node;
+	}
+
+	/**
+	 * @return array{string, string}|null
+	 */
+	private function getOperands(Node\Expr $left, Node\Expr $right): ?array
+	{
+		if (
+			$left instanceof Node\Scalar\Int_
+			&& $right instanceof Node\Expr\ConstFetch
+			&& $right->name->toString() === 'PHP_VERSION_ID'
+		) {
+			return [(new PhpVersion($left->value))->getVersionString(), $this->phpVersionString];
+		}
+
+		if (
+			$right instanceof Node\Scalar\Int_
+			&& $left instanceof Node\Expr\ConstFetch
+			&& $left->name->toString() === 'PHP_VERSION_ID'
+		) {
+			return [$this->phpVersionString, (new PhpVersion($right->value))->getVersionString()];
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/RichParser.php b/src/Parser/RichParser.php
new file mode 100644
index 00000000..99c15c96
--- /dev/null
+++ b/src/Parser/RichParser.php
@@ -0,0 +1,347 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\ErrorHandler\Collecting;
+use PhpParser\Node;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\NameResolver;
+use PhpParser\Token;
+use PHPStan\Analyser\Ignore\IgnoreLexer;
+use PHPStan\Analyser\Ignore\IgnoreParseException;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\File\FileReader;
+use PHPStan\ShouldNotHappenException;
+use function array_filter;
+use function array_map;
+use function count;
+use function implode;
+use function in_array;
+use function preg_match_all;
+use function sprintf;
+use function str_contains;
+use function strlen;
+use function strpos;
+use function substr;
+use function substr_count;
+use const ARRAY_FILTER_USE_KEY;
+use const PREG_OFFSET_CAPTURE;
+use const T_COMMENT;
+use const T_DOC_COMMENT;
+use const T_WHITESPACE;
+
+final class RichParser implements Parser
+{
+
+	public const VISITOR_SERVICE_TAG = 'phpstan.parser.richParserNodeVisitor';
+
+	private const PHPDOC_TAG_REGEX = '(@(?:[a-z][a-z0-9-\\\\]+:)?[a-z][a-z0-9-\\\\]*+)';
+
+	private const PHPDOC_DOCTRINE_TAG_REGEX = '(@[a-z_\\\\][a-z0-9_\:\\\\]*[a-z_][a-z0-9_]*)';
+
+	public function __construct(
+		private \PhpParser\Parser $parser,
+		private NameResolver $nameResolver,
+		private Container $container,
+		private IgnoreLexer $ignoreLexer,
+	)
+	{
+	}
+
+	/**
+	 * @param string $file path to a file to parse
+	 * @return Node\Stmt[]
+	 */
+	public function parseFile(string $file): array
+	{
+		try {
+			return $this->parseString(FileReader::read($file));
+		} catch (ParserErrorsException $e) {
+			throw new ParserErrorsException($e->getErrors(), $file);
+		}
+	}
+
+	/**
+	 * @return Node\Stmt[]
+	 */
+	public function parseString(string $sourceCode): array
+	{
+		$errorHandler = new Collecting();
+		$nodes = $this->parser->parse($sourceCode, $errorHandler);
+
+		$tokens = $this->parser->getTokens();
+		if ($errorHandler->hasErrors()) {
+			throw new ParserErrorsException($errorHandler->getErrors(), null);
+		}
+		if ($nodes === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nodeTraverser = new NodeTraverser();
+		$nodeTraverser->addVisitor($this->nameResolver);
+
+		$traitCollectingVisitor = new TraitCollectingVisitor();
+		$nodeTraverser->addVisitor($traitCollectingVisitor);
+
+		foreach ($this->container->getServicesByTag(self::VISITOR_SERVICE_TAG) as $visitor) {
+			$nodeTraverser->addVisitor($visitor);
+		}
+
+		/** @var array<Node\Stmt> */
+		$nodes = $nodeTraverser->traverse($nodes);
+		['lines' => $linesToIgnore, 'errors' => $ignoreParseErrors] = $this->getLinesToIgnore($tokens);
+		if (isset($nodes[0])) {
+			$nodes[0]->setAttribute('linesToIgnore', $linesToIgnore);
+			if (count($ignoreParseErrors) > 0) {
+				$nodes[0]->setAttribute('linesToIgnoreParseErrors', $ignoreParseErrors);
+			}
+		}
+
+		foreach ($traitCollectingVisitor->traits as $trait) {
+			$preexisting = $trait->getAttribute('linesToIgnore', []);
+			$filteredLinesToIgnore = array_filter($linesToIgnore, static fn (int $line): bool => $line >= $trait->getStartLine() && $line <= $trait->getEndLine(), ARRAY_FILTER_USE_KEY);
+			foreach ($preexisting as $line => $ignores) {
+				$filteredLinesToIgnore[$line] = $ignores;
+			}
+			$trait->setAttribute('linesToIgnore', $filteredLinesToIgnore);
+		}
+
+		return $nodes;
+	}
+
+	/**
+	 * @param Token[] $tokens
+	 * @return array{lines: array<int, non-empty-list<string>|null>, errors: array<int, non-empty-list<string>>}
+	 */
+	private function getLinesToIgnore(array $tokens): array
+	{
+		$lines = [];
+		$previousToken = null;
+		$pendingToken = null;
+		$errors = [];
+		foreach ($tokens as $token) {
+			$type = $token->id;
+			$line = $token->line;
+			if ($type !== T_COMMENT && $type !== T_DOC_COMMENT) {
+				if ($type !== T_WHITESPACE) {
+					if ($pendingToken !== null) {
+						[$pendingText, $pendingIgnorePos, $tokenLine, $pendingLine] = $pendingToken;
+
+						try {
+							$identifiers = $this->parseIdentifiers($pendingText, $pendingIgnorePos);
+						} catch (IgnoreParseException $e) {
+							$errors[] = [$tokenLine + $e->getPhpDocLine(), $e->getMessage()];
+							$pendingToken = null;
+							continue;
+						}
+
+						if ($line !== $pendingLine + 1) {
+							$lineToAdd = $pendingLine;
+						} else {
+							$lineToAdd = $line;
+						}
+
+						foreach ($identifiers as $identifier) {
+							$lines[$lineToAdd][] = $identifier;
+						}
+
+						$pendingToken = null;
+					}
+					$previousToken = $token;
+				}
+				continue;
+			}
+
+			$text = $token->text;
+			$isNextLine = str_contains($text, '@phpstan-ignore-next-line');
+			$isCurrentLine = str_contains($text, '@phpstan-ignore-line');
+
+			if ($type === T_DOC_COMMENT) {
+				$lines += $this->getLinesToIgnoreForTokenByIgnoreComment($text, $line, '@phpstan-ignore-line', false);
+				if ($isNextLine) {
+					$pattern = sprintf('~%s~si', implode('|', [self::PHPDOC_TAG_REGEX, self::PHPDOC_DOCTRINE_TAG_REGEX]));
+					$r = preg_match_all($pattern, $text, $pregMatches, PREG_OFFSET_CAPTURE);
+					if ($r !== false) {
+						$c = count($pregMatches[0]);
+						if ($c > 0) {
+							[$lastMatchTag, $lastMatchOffset] = $pregMatches[0][$c - 1];
+							if ($lastMatchTag === '@phpstan-ignore-next-line') {
+								// this will let us ignore errors outside of PHPDoc
+								// and also cut off the PHPDoc text before the last tag
+								$lineToIgnore = $line + 1 + substr_count($text, "\n");
+								$lines[$lineToIgnore] = null;
+								$text = substr($text, 0, $lastMatchOffset);
+							}
+						}
+					}
+
+					$lines += $this->getLinesToIgnoreForTokenByIgnoreComment($text, $line, '@phpstan-ignore-next-line', true);
+				}
+
+				if ($isNextLine || $isCurrentLine) {
+					continue;
+				}
+
+			} else {
+				if ($isNextLine) {
+					$line++;
+				}
+				if ($isNextLine || $isCurrentLine) {
+					$line += substr_count($token->text, "\n");
+
+					$lines[$line] = null;
+					continue;
+				}
+			}
+
+			$ignorePos = strpos($text, '@phpstan-ignore');
+			if ($ignorePos === false) {
+				continue;
+			}
+
+			$ignoreLine = substr_count(substr($text, 0, $ignorePos), "\n") - 1;
+
+			if ($previousToken !== null && $previousToken->line === $line) {
+				try {
+					foreach ($this->parseIdentifiers($text, $ignorePos) as $identifier) {
+						$lines[$line][] = $identifier;
+					}
+				} catch (IgnoreParseException $e) {
+					$errors[] = [$token->line + $e->getPhpDocLine() + $ignoreLine, $e->getMessage()];
+				}
+
+				continue;
+			}
+
+			$line += substr_count($token->text, "\n");
+			$pendingToken = [$text, $ignorePos, $token->line + $ignoreLine, $line];
+		}
+
+		if ($pendingToken !== null) {
+			[$pendingText, $pendingIgnorePos, $tokenLine, $pendingLine] = $pendingToken;
+
+			try {
+				foreach ($this->parseIdentifiers($pendingText, $pendingIgnorePos) as $identifier) {
+					$lines[$pendingLine][] = $identifier;
+				}
+			} catch (IgnoreParseException $e) {
+				$errors[] = [$tokenLine + $e->getPhpDocLine(), $e->getMessage()];
+			}
+		}
+
+		$processedErrors = [];
+		foreach ($errors as [$line, $message]) {
+			$processedErrors[$line][] = $message;
+		}
+
+		return [
+			'lines' => $lines,
+			'errors' => $processedErrors,
+		];
+	}
+
+	/**
+	 * @return array<int, null>
+	 */
+	private function getLinesToIgnoreForTokenByIgnoreComment(
+		string $tokenText,
+		int $tokenLine,
+		string $ignoreComment,
+		bool $ignoreNextLine,
+	): array
+	{
+		$lines = [];
+		$positionsOfIgnoreComment = [];
+		$offset = 0;
+
+		while (($pos = strpos($tokenText, $ignoreComment, $offset)) !== false) {
+			$positionsOfIgnoreComment[] = $pos;
+			$offset = $pos + 1;
+		}
+
+		foreach ($positionsOfIgnoreComment as $pos) {
+			$line = $tokenLine + substr_count(substr($tokenText, 0, $pos), "\n") + ($ignoreNextLine ? 1 : 0);
+			$lines[$line] = null;
+		}
+
+		return $lines;
+	}
+
+	/**
+	 * @return non-empty-list<string>
+	 * @throws IgnoreParseException
+	 */
+	private function parseIdentifiers(string $text, int $ignorePos): array
+	{
+		$text = substr($text, $ignorePos + strlen('@phpstan-ignore'));
+		$originalTokens = $this->ignoreLexer->tokenize($text);
+		$tokens = [];
+
+		foreach ($originalTokens as $originalToken) {
+			if ($originalToken[IgnoreLexer::TYPE_OFFSET] === IgnoreLexer::TOKEN_WHITESPACE) {
+				continue;
+			}
+			$tokens[] = $originalToken;
+		}
+
+		$c = count($tokens);
+
+		$identifiers = [];
+		$openParenthesisCount = 0;
+		$expected = [IgnoreLexer::TOKEN_IDENTIFIER];
+
+		for ($i = 0; $i < $c; $i++) {
+			$lastTokenTypeLabel = isset($tokenType) ? $this->ignoreLexer->getLabel($tokenType) : '@phpstan-ignore';
+			[IgnoreLexer::VALUE_OFFSET => $content, IgnoreLexer::TYPE_OFFSET => $tokenType, IgnoreLexer::LINE_OFFSET => $tokenLine] = $tokens[$i];
+
+			if ($expected !== null && !in_array($tokenType, $expected, true)) {
+				$tokenTypeLabel = $this->ignoreLexer->getLabel($tokenType);
+				$otherTokenContent = $tokenType === IgnoreLexer::TOKEN_OTHER ? sprintf(" '%s'", $content) : '';
+				$expectedLabels = implode(' or ', array_map(fn ($token) => $this->ignoreLexer->getLabel($token), $expected));
+
+				throw new IgnoreParseException(sprintf('Unexpected %s%s after %s, expected %s', $tokenTypeLabel, $otherTokenContent, $lastTokenTypeLabel, $expectedLabels), $tokenLine);
+			}
+
+			if ($tokenType === IgnoreLexer::TOKEN_OPEN_PARENTHESIS) {
+				$openParenthesisCount++;
+				$expected = null;
+				continue;
+			}
+
+			if ($tokenType === IgnoreLexer::TOKEN_CLOSE_PARENTHESIS) {
+				$openParenthesisCount--;
+				if ($openParenthesisCount === 0) {
+					$expected = [IgnoreLexer::TOKEN_COMMA, IgnoreLexer::TOKEN_END];
+				}
+				continue;
+			}
+
+			if ($openParenthesisCount > 0) {
+				continue; // waiting for comment end
+			}
+
+			if ($tokenType === IgnoreLexer::TOKEN_IDENTIFIER) {
+				$identifiers[] = $content;
+				$expected = [IgnoreLexer::TOKEN_COMMA, IgnoreLexer::TOKEN_END, IgnoreLexer::TOKEN_OPEN_PARENTHESIS];
+				continue;
+			}
+
+			if ($tokenType === IgnoreLexer::TOKEN_COMMA) {
+				$expected = [IgnoreLexer::TOKEN_IDENTIFIER];
+				continue;
+			}
+		}
+
+		if ($openParenthesisCount > 0) {
+			throw new IgnoreParseException('Unexpected end, unclosed opening parenthesis', $tokenLine ?? 1);
+		}
+
+		if (count($identifiers) === 0) {
+			throw new IgnoreParseException('Missing identifier', 1);
+		}
+
+		return $identifiers;
+	}
+
+}
diff --git a/src/Parser/SimpleParser.php b/src/Parser/SimpleParser.php
new file mode 100644
index 00000000..92d61550
--- /dev/null
+++ b/src/Parser/SimpleParser.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\ErrorHandler\Collecting;
+use PhpParser\Node;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\NameResolver;
+use PHPStan\File\FileReader;
+use PHPStan\ShouldNotHappenException;
+
+final class SimpleParser implements Parser
+{
+
+	public function __construct(
+		private \PhpParser\Parser $parser,
+		private NameResolver $nameResolver,
+		private VariadicMethodsVisitor $variadicMethodsVisitor,
+		private VariadicFunctionsVisitor $variadicFunctionsVisitor,
+	)
+	{
+	}
+
+	/**
+	 * @param string $file path to a file to parse
+	 * @return Node\Stmt[]
+	 */
+	public function parseFile(string $file): array
+	{
+		try {
+			return $this->parseString(FileReader::read($file));
+		} catch (ParserErrorsException $e) {
+			throw new ParserErrorsException($e->getErrors(), $file);
+		}
+	}
+
+	/**
+	 * @return Node\Stmt[]
+	 */
+	public function parseString(string $sourceCode): array
+	{
+		$errorHandler = new Collecting();
+		$nodes = $this->parser->parse($sourceCode, $errorHandler);
+		if ($errorHandler->hasErrors()) {
+			throw new ParserErrorsException($errorHandler->getErrors(), null);
+		}
+		if ($nodes === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nodeTraverser = new NodeTraverser();
+		$nodeTraverser->addVisitor($this->nameResolver);
+		$nodeTraverser->addVisitor($this->variadicMethodsVisitor);
+		$nodeTraverser->addVisitor($this->variadicFunctionsVisitor);
+
+		/** @var array<Node\Stmt> */
+		return $nodeTraverser->traverse($nodes);
+	}
+
+}
diff --git a/src/Parser/StandaloneThrowExprVisitor.php b/src/Parser/StandaloneThrowExprVisitor.php
new file mode 100644
index 00000000..d0f23d93
--- /dev/null
+++ b/src/Parser/StandaloneThrowExprVisitor.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class StandaloneThrowExprVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'standaloneThrowExpr';
+
+	public function enterNode(Node $node): ?Node\Stmt\Expression
+	{
+		if (!$node instanceof Node\Stmt\Expression) {
+			return null;
+		}
+
+		if (!$node->expr instanceof Node\Expr\Throw_) {
+			return null;
+		}
+
+		$node->expr->setAttribute(self::ATTRIBUTE_NAME, true);
+
+		return $node;
+	}
+
+}
diff --git a/src/Parser/StubParser.php b/src/Parser/StubParser.php
new file mode 100644
index 00000000..3cb2a763
--- /dev/null
+++ b/src/Parser/StubParser.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\ErrorHandler\Collecting;
+use PhpParser\Node;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\NameResolver;
+use PHPStan\File\FileReader;
+use PHPStan\ShouldNotHappenException;
+
+final class StubParser implements Parser
+{
+
+	public function __construct(
+		private \PhpParser\Parser $parser,
+		private NameResolver $nameResolver,
+	)
+	{
+	}
+
+	/**
+	 * @param string $file path to a file to parse
+	 * @return Node\Stmt[]
+	 */
+	public function parseFile(string $file): array
+	{
+		try {
+			return $this->parseString(FileReader::read($file));
+		} catch (ParserErrorsException $e) {
+			throw new ParserErrorsException($e->getErrors(), $file);
+		}
+	}
+
+	/**
+	 * @return Node\Stmt[]
+	 */
+	public function parseString(string $sourceCode): array
+	{
+		$errorHandler = new Collecting();
+		$nodes = $this->parser->parse($sourceCode, $errorHandler);
+		if ($errorHandler->hasErrors()) {
+			throw new ParserErrorsException($errorHandler->getErrors(), null);
+		}
+		if ($nodes === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nodeTraverser = new NodeTraverser();
+		$nodeTraverser->addVisitor($this->nameResolver);
+
+		/** @var array<Node\Stmt> */
+		return $nodeTraverser->traverse($nodes);
+	}
+
+}
diff --git a/src/Parser/TraitCollectingVisitor.php b/src/Parser/TraitCollectingVisitor.php
new file mode 100644
index 00000000..31ed5c52
--- /dev/null
+++ b/src/Parser/TraitCollectingVisitor.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class TraitCollectingVisitor extends NodeVisitorAbstract
+{
+
+	/** @var list<Node\Stmt\Trait_> */
+	public array $traits = [];
+
+	public function enterNode(Node $node): ?Node
+	{
+		if (!$node instanceof Node\Stmt\Trait_) {
+			return null;
+		}
+
+		$this->traits[] = $node;
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/TryCatchTypeVisitor.php b/src/Parser/TryCatchTypeVisitor.php
new file mode 100644
index 00000000..87982ee9
--- /dev/null
+++ b/src/Parser/TryCatchTypeVisitor.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+use function array_pop;
+use function array_reverse;
+use function count;
+
+final class TryCatchTypeVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'tryCatchTypes';
+
+	/** @var array<int, array<int, string>|null> */
+	private array $typeStack = [];
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->typeStack = [];
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Stmt || $node instanceof Node\Expr\Match_) {
+			if (count($this->typeStack) > 0) {
+				$node->setAttribute(self::ATTRIBUTE_NAME, $this->typeStack[count($this->typeStack) - 1]);
+			}
+		}
+
+		if ($node instanceof Node\FunctionLike) {
+			$this->typeStack[] = null;
+		}
+
+		if ($node instanceof Node\Stmt\TryCatch) {
+			$types = [];
+			foreach (array_reverse($this->typeStack) as $stackTypes) {
+				if ($stackTypes === null) {
+					break;
+				}
+
+				foreach ($stackTypes as $type) {
+					$types[] = $type;
+				}
+			}
+			foreach ($node->catches as $catch) {
+				foreach ($catch->types as $type) {
+					$types[] = $type->toString();
+				}
+			}
+
+			$this->typeStack[] = $types;
+		}
+
+		return null;
+	}
+
+	public function leaveNode(Node $node): ?Node
+	{
+		if (
+			!$node instanceof Node\Stmt\TryCatch
+			&& !$node instanceof Node\FunctionLike
+		) {
+			return null;
+		}
+
+		array_pop($this->typeStack);
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/TypeTraverserInstanceofVisitor.php b/src/Parser/TypeTraverserInstanceofVisitor.php
new file mode 100644
index 00000000..6f3e3745
--- /dev/null
+++ b/src/Parser/TypeTraverserInstanceofVisitor.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+final class TypeTraverserInstanceofVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'insideTypeTraverserMap';
+
+	private int $depth = 0;
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->depth = 0;
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Expr\Instanceof_ && $this->depth > 0) {
+			$node->setAttribute(self::ATTRIBUTE_NAME, true);
+			return null;
+		}
+
+		if (
+			$node instanceof Node\Expr\StaticCall
+			&& $node->class instanceof Node\Name
+			&& $node->class->toLowerString() === 'phpstan\\type\\typetraverser'
+			&& $node->name instanceof Node\Identifier
+			&& $node->name->toLowerString() === 'map'
+		) {
+			$this->depth++;
+		}
+
+		return null;
+	}
+
+	public function leaveNode(Node $node): ?Node
+	{
+		if (
+			$node instanceof Node\Expr\StaticCall
+			&& $node->class instanceof Node\Name
+			&& $node->class->toLowerString() === 'phpstan\\type\\typetraverser'
+			&& $node->name instanceof Node\Identifier
+			&& $node->name->toLowerString() === 'map'
+		) {
+			$this->depth--;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/VariadicFunctionsVisitor.php b/src/Parser/VariadicFunctionsVisitor.php
new file mode 100644
index 00000000..1b45cd5e
--- /dev/null
+++ b/src/Parser/VariadicFunctionsVisitor.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Reflection\ParametersAcceptor;
+use function array_filter;
+use function array_key_exists;
+use function in_array;
+
+final class VariadicFunctionsVisitor extends NodeVisitorAbstract
+{
+
+	private ?Node $topNode = null;
+
+	private ?string $inNamespace = null;
+
+	private ?string $inFunction = null;
+
+	/** @var array<string, bool> */
+	public static array $cache = [];
+
+	/** @var array<string, bool> */
+	private array $variadicFunctions = [];
+
+	public const ATTRIBUTE_NAME = 'variadicFunctions';
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->topNode = null;
+		$this->variadicFunctions = [];
+		$this->inNamespace = null;
+		$this->inFunction = null;
+
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($this->topNode === null) {
+			$this->topNode = $node;
+		}
+
+		if ($node instanceof Node\Stmt\Namespace_ && $node->name !== null) {
+			$this->inNamespace = $node->name->toString();
+		}
+
+		if ($node instanceof Node\Stmt\Function_) {
+			$this->inFunction = $this->inNamespace !== null ? $this->inNamespace . '\\' . $node->name->name : $node->name->name;
+		}
+
+		if (
+			$this->inFunction !== null
+			&& $node instanceof Node\Expr\FuncCall
+			&& $node->name instanceof Name
+			&& in_array((string) $node->name, ParametersAcceptor::VARIADIC_FUNCTIONS, true)
+			&& !array_key_exists($this->inFunction, $this->variadicFunctions)
+		) {
+			$this->variadicFunctions[$this->inFunction] = true;
+		}
+
+		return null;
+	}
+
+	public function leaveNode(Node $node): ?Node
+	{
+		if ($node instanceof Node\Stmt\Namespace_ && $node->name !== null) {
+			$this->inNamespace = null;
+		}
+
+		if ($node instanceof Node\Stmt\Function_ && $this->inFunction !== null) {
+			$this->variadicFunctions[$this->inFunction] ??= false;
+			$this->inFunction = null;
+		}
+
+		return null;
+	}
+
+	public function afterTraverse(array $nodes): ?array
+	{
+		if ($this->topNode !== null && $this->variadicFunctions !== []) {
+			foreach ($this->variadicFunctions as $name => $variadic) {
+				self::$cache[$name] = $variadic;
+			}
+			$functions = array_filter($this->variadicFunctions, static fn (bool $variadic) => $variadic);
+			$this->topNode->setAttribute(self::ATTRIBUTE_NAME, $functions);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Parser/VariadicMethodsVisitor.php b/src/Parser/VariadicMethodsVisitor.php
new file mode 100644
index 00000000..01e32b8c
--- /dev/null
+++ b/src/Parser/VariadicMethodsVisitor.php
@@ -0,0 +1,136 @@
+<?php 
+
+namespace PHPStan\Parser;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Reflection\ParametersAcceptor;
+use function array_key_exists;
+use function array_pop;
+use function count;
+use function in_array;
+use function sprintf;
+
+final class VariadicMethodsVisitor extends NodeVisitorAbstract
+{
+
+	public const ATTRIBUTE_NAME = 'variadicMethods';
+
+	public const ANONYMOUS_CLASS_PREFIX = 'class@anonymous';
+
+	private ?Node $topNode = null;
+
+	private ?string $inNamespace = null;
+
+	/** @var array<string> */
+	private array $classStack = [];
+
+	private ?string $inMethod = null;
+
+	/** @var array<string, array<string, bool>> */
+	public static array $cache = [];
+
+	/** @var array<string, array<string, bool>> */
+	private array $variadicMethods = [];
+
+	public function beforeTraverse(array $nodes): ?array
+	{
+		$this->topNode = null;
+		$this->variadicMethods = [];
+		$this->inNamespace = null;
+		$this->classStack = [];
+		$this->inMethod = null;
+
+		return null;
+	}
+
+	public function enterNode(Node $node): ?Node
+	{
+		if ($this->topNode === null) {
+			$this->topNode = $node;
+		}
+
+		if ($node instanceof Node\Stmt\Namespace_ && $node->name !== null) {
+			$this->inNamespace = $node->name->toString();
+		}
+
+		if ($node instanceof Node\Stmt\ClassLike) {
+			if (!$node->name instanceof Node\Identifier) {
+				$className = sprintf('%s:%s:%s', self::ANONYMOUS_CLASS_PREFIX, $node->getStartLine(), $node->getEndLine());
+				$this->classStack[] = $className;
+			} else {
+				$className = $node->name->name;
+				$this->classStack[] = $this->inNamespace !== null ? $this->inNamespace . '\\' . $className : $className;
+			}
+		}
+
+		if ($node instanceof ClassMethod) {
+			$this->inMethod = $node->name->name;
+		}
+
+		if (
+			$this->inMethod !== null
+			&& $node instanceof Node\Expr\FuncCall
+			&& $node->name instanceof Name
+			&& in_array((string) $node->name, ParametersAcceptor::VARIADIC_FUNCTIONS, true)
+		) {
+			$lastClass = $this->classStack[count($this->classStack) - 1] ?? null;
+			if ($lastClass !== null) {
+				if (
+					!array_key_exists($lastClass, $this->variadicMethods)
+					|| !array_key_exists($this->inMethod, $this->variadicMethods[$lastClass])
+				) {
+					$this->variadicMethods[$lastClass][$this->inMethod] = true;
+				}
+			}
+
+		}
+
+		return null;
+	}
+
+	public function leaveNode(Node $node): ?Node
+	{
+		if ($node instanceof ClassMethod) {
+			$lastClass = $this->classStack[count($this->classStack) - 1] ?? null;
+			if ($lastClass !== null) {
+				$this->variadicMethods[$lastClass][$this->inMethod] ??= false;
+			}
+			$this->inMethod = null;
+		}
+
+		if ($node instanceof Node\Stmt\ClassLike) {
+			array_pop($this->classStack);
+		}
+
+		if ($node instanceof Node\Stmt\Namespace_ && $node->name !== null) {
+			$this->inNamespace = null;
+		}
+
+		return null;
+	}
+
+	public function afterTraverse(array $nodes): ?array
+	{
+		if ($this->topNode !== null && $this->variadicMethods !== []) {
+			$filteredMethods = [];
+			foreach ($this->variadicMethods as $class => $methods) {
+				foreach ($methods as $name => $variadic) {
+					self::$cache[$class][$name] = $variadic;
+					if (!$variadic) {
+						continue;
+					}
+
+					$filteredMethods[$class][$name] = true;
+				}
+			}
+			$this->topNode->setAttribute(self::ATTRIBUTE_NAME, $filteredMethods);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Php/ComposerPhpVersionFactory.php b/src/Php/ComposerPhpVersionFactory.php
new file mode 100644
index 00000000..1925b218
--- /dev/null
+++ b/src/Php/ComposerPhpVersionFactory.php
@@ -0,0 +1,122 @@
+<?php 
+
+namespace PHPStan\Php;
+return;
+
+use Composer\Semver\VersionParser;
+use Nette\Utils\Strings;
+use PHPStan\Internal\ComposerHelper;
+use function count;
+use function end;
+use function is_string;
+use function min;
+use function sprintf;
+
+final class ComposerPhpVersionFactory
+{
+
+	private ?PhpVersion $minVersion = null;
+
+	private ?PhpVersion $maxVersion = null;
+
+	private bool $initialized = false;
+
+	/**
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+	}
+
+	private function initializeVersions(): void
+	{
+		$this->initialized = true;
+
+		// don't limit minVersion... PHPStan can analyze even PHP5
+		$this->maxVersion = new PhpVersion(PhpVersionFactory::MAX_PHP_VERSION);
+
+		// fallback to composer.json based php-version constraint
+		$composerPhpVersion = $this->getComposerRequireVersion();
+		if ($composerPhpVersion === null) {
+			return;
+		}
+
+		$parser = new VersionParser();
+		$constraint = $parser->parseConstraints($composerPhpVersion);
+
+		if (!$constraint->getLowerBound()->isZero()) {
+			$minVersion = $this->buildVersion($constraint->getLowerBound()->getVersion(), false);
+
+			if ($minVersion !== null) {
+				$this->minVersion = new PhpVersion($minVersion->getVersionId());
+			}
+		}
+		if ($constraint->getUpperBound()->isPositiveInfinity()) {
+			return;
+		}
+
+		$this->maxVersion = $this->buildVersion($constraint->getUpperBound()->getVersion(), true);
+	}
+
+	public function getMinVersion(): ?PhpVersion
+	{
+		if ($this->initialized === false) {
+			$this->initializeVersions();
+		}
+
+		return $this->minVersion;
+	}
+
+	public function getMaxVersion(): ?PhpVersion
+	{
+		if ($this->initialized === false) {
+			$this->initializeVersions();
+		}
+
+		return $this->maxVersion;
+	}
+
+	private function getComposerRequireVersion(): ?string
+	{
+		$composerPhpVersion = null;
+
+		if (count($this->composerAutoloaderProjectPaths) > 0) {
+			$composer = ComposerHelper::getComposerConfig(end($this->composerAutoloaderProjectPaths));
+			if ($composer !== null) {
+				$requiredVersion = $composer['require']['php'] ?? null;
+
+				if (is_string($requiredVersion)) {
+					$composerPhpVersion = $requiredVersion;
+				}
+			}
+		}
+
+		return $composerPhpVersion;
+	}
+
+	private function buildVersion(string $version, bool $isMaxVersion): ?PhpVersion
+	{
+		$matches = Strings::match($version, '#^(\d+)\.(\d+)(?:\.(\d+))?#');
+		if ($matches === null) {
+			return null;
+		}
+
+		$major = $matches[1];
+		$minor = $matches[2];
+		$patch = $matches[3] ?? 0;
+		$versionId = (int) sprintf('%d%02d%02d', $major, $minor, $patch);
+
+		if ($isMaxVersion && $version === '6.0.0.0-dev') {
+			$versionId = min($versionId, PhpVersionFactory::MAX_PHP5_VERSION);
+		} elseif ($isMaxVersion && $version === '8.0.0.0-dev') {
+			$versionId = min($versionId, PhpVersionFactory::MAX_PHP7_VERSION);
+		} else {
+			$versionId = min($versionId, PhpVersionFactory::MAX_PHP_VERSION);
+		}
+
+		return new PhpVersion($versionId);
+	}
+
+}
diff --git a/src/Php/PhpVersion.php b/src/Php/PhpVersion.php
new file mode 100644
index 00000000..5b33ccfa
--- /dev/null
+++ b/src/Php/PhpVersion.php
@@ -0,0 +1,399 @@
+<?php 
+
+namespace PHPStan\Php;
+return;
+
+use function floor;
+
+/**
+ * @api
+ */
+final class PhpVersion
+{
+
+	public const SOURCE_RUNTIME = 1;
+	public const SOURCE_CONFIG = 2;
+	public const SOURCE_COMPOSER_PLATFORM_PHP = 3;
+	public const SOURCE_UNKNOWN = 4;
+
+	/**
+	 * @param self::SOURCE_* $source
+	 */
+	public function __construct(private int $versionId, private int $source = self::SOURCE_UNKNOWN)
+	{
+	}
+
+	/**
+	 * @return self::SOURCE_*
+	 */
+	public function getSource(): int
+	{
+		return $this->source;
+	}
+
+	public function getSourceLabel(): string
+	{
+		switch ($this->source) {
+			case self::SOURCE_RUNTIME:
+				return 'runtime';
+			case self::SOURCE_CONFIG:
+				return 'config';
+			case self::SOURCE_COMPOSER_PLATFORM_PHP:
+				return 'config.platform.php in composer.json';
+		}
+
+		return 'unknown';
+	}
+
+	public function getVersionId(): int
+	{
+		return $this->versionId;
+	}
+
+	public function getMajorVersionId(): int
+	{
+		return (int) floor($this->versionId / 10000);
+	}
+
+	public function getMinorVersionId(): int
+	{
+		return (int) floor(($this->versionId % 10000) / 100);
+	}
+
+	public function getPatchVersionId(): int
+	{
+		return (int) floor($this->versionId % 100);
+	}
+
+	public function getVersionString(): string
+	{
+		$first = $this->getMajorVersionId();
+		$second = $this->getMinorVersionId();
+		$third = $this->getPatchVersionId();
+
+		return $first . '.' . $second . ($third !== 0 ? '.' . $third : '');
+	}
+
+	public function supportsNullCoalesceAssign(): bool
+	{
+		return $this->versionId >= 70400;
+	}
+
+	public function supportsParameterContravariance(): bool
+	{
+		return $this->versionId >= 70400;
+	}
+
+	public function supportsReturnCovariance(): bool
+	{
+		return $this->versionId >= 70400;
+	}
+
+	public function supportsNoncapturingCatches(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsNativeUnionTypes(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function deprecatesRequiredParameterAfterOptional(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function deprecatesRequiredParameterAfterOptionalNullableAndDefaultNull(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function deprecatesRequiredParameterAfterOptionalUnionOrMixed(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsLessOverridenParametersWithVariadic(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsThrowExpression(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsClassConstantOnExpression(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsLegacyConstructor(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function supportsPromotedProperties(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsParameterTypeWidening(): bool
+	{
+		return $this->versionId >= 70200;
+	}
+
+	public function supportsUnsetCast(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function supportsNamedArguments(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function throwsTypeErrorForInternalFunctions(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function throwsValueErrorForInternalFunctions(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsHhPrintfSpecifier(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function isEmptyStringValidAliasForNoneInMbSubstituteCharacter(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function supportsAllUnicodeScalarCodePointsInMbSubstituteCharacter(): bool
+	{
+		return $this->versionId >= 70200;
+	}
+
+	public function isNumericStringValidArgInMbSubstituteCharacter(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function isNullValidArgInMbSubstituteCharacter(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function isInterfaceConstantImplicitlyFinal(): bool
+	{
+		return $this->versionId < 80100;
+	}
+
+	public function supportsFinalConstants(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsReadOnlyProperties(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsEnums(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsPureIntersectionTypes(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsCaseInsensitiveConstantNames(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function hasStricterRoundFunctions(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function hasTentativeReturnTypes(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsFirstClassCallables(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function supportsArrayUnpackingWithStringKeys(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function throwsOnInvalidMbStringEncoding(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsPassNoneEncodings(): bool
+	{
+		return $this->versionId < 70300;
+	}
+
+	public function producesWarningForFinalPrivateMethods(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function deprecatesDynamicProperties(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function strSplitReturnsEmptyArray(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function supportsDisjunctiveNormalForm(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function serializableRequiresMagicMethods(): bool
+	{
+		return $this->versionId >= 80100;
+	}
+
+	public function arrayFunctionsReturnNullWithNonArray(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	// see https://www.php.net/manual/en/migration80.incompatible.php#migration80.incompatible.core.string-number-comparision
+	public function castsNumbersToStringsOnLooseComparison(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function nonNumericStringAndIntegerIsFalseOnLooseComparison(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsCallableInstanceMethods(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+	public function supportsJsonValidate(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsConstantsInTraits(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function supportsNativeTypesInClassConstants(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsAbstractTraitMethods(): bool
+	{
+		return $this->versionId >= 80000;
+	}
+
+	public function supportsOverrideAttribute(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsDynamicClassConstantFetch(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsReadOnlyClasses(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function supportsReadOnlyAnonymousClasses(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function supportsNeverReturnTypeInArrowFunction(): bool
+	{
+		return $this->versionId >= 80200;
+	}
+
+	public function supportsPregUnmatchedAsNull(): bool
+	{
+		// while PREG_UNMATCHED_AS_NULL is defined in php-src since 7.2.x it starts working as expected with 7.4.x
+		// https://3v4l.org/v3HE4
+		return $this->versionId >= 70400;
+	}
+
+	public function supportsPregCaptureOnlyNamedGroups(): bool
+	{
+		// https://php.watch/versions/8.2/preg-n-no-capture-modifier
+		return $this->versionId >= 80200;
+	}
+
+	public function supportsPropertyHooks(): bool
+	{
+		return $this->versionId >= 80400;
+	}
+
+	public function supportsAsymmetricVisibility(): bool
+	{
+		return $this->versionId >= 80400;
+	}
+
+	public function supportsLazyObjects(): bool
+	{
+		return $this->versionId >= 80400;
+	}
+
+	public function hasDateTimeExceptions(): bool
+	{
+		return $this->versionId >= 80300;
+	}
+
+	public function isCurloptUrlCheckingFileSchemeWithOpenBasedir(): bool
+	{
+		// Before PHP 8.0, when setting CURLOPT_URL, an unparsable URL or a file:// scheme would fail if open_basedir is used
+		// https://github.com/php/php-src/blob/php-7.4.33/ext/curl/interface.c#L139-L158
+		// https://github.com/php/php-src/blob/php-8.0.0/ext/curl/interface.c#L128-L130
+		return $this->versionId < 80000;
+	}
+
+	public function highlightStringDoesNotReturnFalse(): bool
+	{
+		return $this->versionId >= 80400;
+	}
+
+	public function deprecatesImplicitlyNullableParameterTypes(): bool
+	{
+		return $this->versionId >= 80400;
+	}
+
+	public function substrReturnFalseInsteadOfEmptyString(): bool
+	{
+		return $this->versionId < 80000;
+	}
+
+}
diff --git a/src/Php/PhpVersionFactory.php b/src/Php/PhpVersionFactory.php
new file mode 100644
index 00000000..3ffccfb8
--- /dev/null
+++ b/src/Php/PhpVersionFactory.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Php;
+return;
+
+use function explode;
+use function max;
+use function min;
+use const PHP_VERSION_ID;
+
+final class PhpVersionFactory
+{
+
+	public const MIN_PHP_VERSION = 70100;
+	public const MAX_PHP_VERSION = 80499;
+	public const MAX_PHP5_VERSION = 50699;
+	public const MAX_PHP7_VERSION = 70499;
+
+	public function __construct(
+		private ?int $versionId,
+		private ?string $composerPhpVersion,
+	)
+	{
+	}
+
+	public function create(): PhpVersion
+	{
+		$versionId = $this->versionId;
+		if ($versionId !== null) {
+			$source = PhpVersion::SOURCE_CONFIG;
+		} elseif ($this->composerPhpVersion !== null) {
+			$parts = explode('.', $this->composerPhpVersion);
+			$tmp = (int) $parts[0] * 10000 + (int) ($parts[1] ?? 0) * 100 + (int) ($parts[2] ?? 0);
+			$tmp = max($tmp, self::MIN_PHP_VERSION);
+			$versionId = min($tmp, self::MAX_PHP_VERSION);
+			$source = PhpVersion::SOURCE_COMPOSER_PLATFORM_PHP;
+		} else {
+			$versionId = PHP_VERSION_ID;
+			$source = PhpVersion::SOURCE_RUNTIME;
+		}
+
+		return new PhpVersion($versionId, $source);
+	}
+
+}
diff --git a/src/Php/PhpVersionFactoryFactory.php b/src/Php/PhpVersionFactoryFactory.php
new file mode 100644
index 00000000..8fc1270c
--- /dev/null
+++ b/src/Php/PhpVersionFactoryFactory.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Php;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\FileReader;
+use function count;
+use function end;
+use function is_array;
+use function is_file;
+use function is_int;
+use function is_string;
+
+final class PhpVersionFactoryFactory
+{
+
+	/**
+	 * @param int|array{min: int, max: int}|null $phpVersion
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private int|array|null $phpVersion,
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+	}
+
+	public function create(): PhpVersionFactory
+	{
+		$composerPhpVersion = null;
+		if (count($this->composerAutoloaderProjectPaths) > 0) {
+			$composerJsonPath = end($this->composerAutoloaderProjectPaths) . '/composer.json';
+			if (is_file($composerJsonPath)) {
+				try {
+					$composerJsonContents = FileReader::read($composerJsonPath);
+					$composer = Json::decode($composerJsonContents, Json::FORCE_ARRAY);
+					$platformVersion = $composer['config']['platform']['php'] ?? null;
+					if (is_string($platformVersion)) {
+						$composerPhpVersion = $platformVersion;
+					}
+				} catch (CouldNotReadFileException | JsonException) {
+					// pass
+				}
+			}
+		}
+
+		$versionId = null;
+
+		if (is_int($this->phpVersion)) {
+			$versionId = $this->phpVersion;
+		}
+
+		if (is_array($this->phpVersion)) {
+			$versionId = $this->phpVersion['min'];
+		}
+
+		return new PhpVersionFactory($versionId, $composerPhpVersion);
+	}
+
+}
diff --git a/src/Php/PhpVersions.php b/src/Php/PhpVersions.php
new file mode 100644
index 00000000..5ae68459
--- /dev/null
+++ b/src/Php/PhpVersions.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Php;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class PhpVersions
+{
+
+	public function __construct(
+		private Type $phpVersions,
+	)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->phpVersions;
+	}
+
+	public function supportsNoncapturingCatches(): TrinaryLogic
+	{
+		return IntegerRangeType::fromInterval(80000, null)->isSuperTypeOf($this->phpVersions)->result;
+	}
+
+	public function producesWarningForFinalPrivateMethods(): TrinaryLogic
+	{
+		return IntegerRangeType::fromInterval(80000, null)->isSuperTypeOf($this->phpVersions)->result;
+	}
+
+	public function supportsNamedArguments(): TrinaryLogic
+	{
+		return IntegerRangeType::fromInterval(80000, null)->isSuperTypeOf($this->phpVersions)->result;
+	}
+
+	public function supportsNamedArgumentAfterUnpackedArgument(): TrinaryLogic
+	{
+		return IntegerRangeType::fromInterval(80100, null)->isSuperTypeOf($this->phpVersions)->result;
+	}
+
+}
diff --git a/src/PhpDoc/ConstExprNodeResolver.php b/src/PhpDoc/ConstExprNodeResolver.php
new file mode 100644
index 00000000..2f0d8862
--- /dev/null
+++ b/src/PhpDoc/ConstExprNodeResolver.php
@@ -0,0 +1,140 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprArrayNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprFalseNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprFloatNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNullNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprTrueNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstFetchNode;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function strtolower;
+
+final class ConstExprNodeResolver
+{
+
+	public function __construct(
+		private ReflectionProvider\ReflectionProviderProvider $reflectionProviderProvider,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+	)
+	{
+	}
+
+	public function resolve(ConstExprNode $node, NameScope $nameScope): Type
+	{
+		if ($node instanceof ConstExprArrayNode) {
+			return $this->resolveArrayNode($node, $nameScope);
+		}
+
+		if ($node instanceof ConstExprFalseNode) {
+			return new ConstantBooleanType(false);
+		}
+
+		if ($node instanceof ConstExprTrueNode) {
+			return new ConstantBooleanType(true);
+		}
+
+		if ($node instanceof ConstExprFloatNode) {
+			return new ConstantFloatType((float) $node->value);
+		}
+
+		if ($node instanceof ConstExprIntegerNode) {
+			return new ConstantIntegerType((int) $node->value);
+		}
+
+		if ($node instanceof ConstExprNullNode) {
+			return new NullType();
+		}
+
+		if ($node instanceof ConstExprStringNode) {
+			return new ConstantStringType($node->value);
+		}
+
+		if ($node instanceof ConstFetchNode) {
+			if ($nameScope->getClassName() !== null) {
+				switch (strtolower($node->className)) {
+					case 'static':
+					case 'self':
+						$className = $nameScope->getClassName();
+						break;
+
+					case 'parent':
+						if ($this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
+							$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
+							if ($classReflection->getParentClass() === null) {
+								return new ErrorType();
+
+							}
+
+							$className = $classReflection->getParentClass()->getName();
+						}
+						break;
+				}
+			}
+			if (!isset($className)) {
+				$className = $nameScope->resolveStringName($node->className);
+			}
+			if (!$this->getReflectionProvider()->hasClass($className)) {
+				return new ErrorType();
+			}
+			$classReflection = $this->getReflectionProvider()->getClass($className);
+			if (!$classReflection->hasConstant($node->name)) {
+				return new ErrorType();
+			}
+			if ($classReflection->isEnum() && $classReflection->hasEnumCase($node->name)) {
+				return new EnumCaseObjectType($classReflection->getName(), $node->name);
+			}
+
+			$reflectionConstant = $classReflection->getNativeReflection()->getReflectionConstant($node->name);
+			if ($reflectionConstant === false) {
+				return new ErrorType();
+			}
+			$declaringClass = $reflectionConstant->getDeclaringClass();
+
+			return $this->initializerExprTypeResolver->getType(
+				$reflectionConstant->getValueExpression(),
+				InitializerExprContext::fromClass($declaringClass->getName(), $declaringClass->getFileName() ?: null),
+			);
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveArrayNode(ConstExprArrayNode $node, NameScope $nameScope): Type
+	{
+		$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+		foreach ($node->items as $item) {
+			if ($item->key === null) {
+				$key = null;
+			} else {
+				$key = $this->resolve($item->key, $nameScope);
+			}
+			$arrayBuilder->setOffsetValueType($key, $this->resolve($item->value, $nameScope));
+		}
+
+		return $arrayBuilder->getArray();
+	}
+
+	private function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProviderProvider->getReflectionProvider();
+	}
+
+}
diff --git a/src/PhpDoc/DefaultStubFilesProvider.php b/src/PhpDoc/DefaultStubFilesProvider.php
new file mode 100644
index 00000000..41390949
--- /dev/null
+++ b/src/PhpDoc/DefaultStubFilesProvider.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Internal\ComposerHelper;
+use function array_filter;
+use function array_values;
+use function str_contains;
+use function strtr;
+
+final class DefaultStubFilesProvider implements StubFilesProvider
+{
+
+	/** @var string[]|null */
+	private ?array $cachedFiles = null;
+
+	/** @var string[]|null */
+	private ?array $cachedProjectFiles = null;
+
+	/**
+	 * @param string[] $stubFiles
+	 * @param string[] $composerAutoloaderProjectPaths
+	 */
+	public function __construct(
+		private Container $container,
+		private array $stubFiles,
+		private array $composerAutoloaderProjectPaths,
+	)
+	{
+	}
+
+	public function getStubFiles(): array
+	{
+		if ($this->cachedFiles !== null) {
+			return $this->cachedFiles;
+		}
+
+		$files = $this->stubFiles;
+		$extensions = $this->container->getServicesByTag(StubFilesExtension::EXTENSION_TAG);
+		foreach ($extensions as $extension) {
+			foreach ($extension->getFiles() as $extensionFile) {
+				$files[] = $extensionFile;
+			}
+		}
+
+		return $this->cachedFiles = $files;
+	}
+
+	public function getProjectStubFiles(): array
+	{
+		if ($this->cachedProjectFiles !== null) {
+			return $this->cachedProjectFiles;
+		}
+
+		$filteredStubFiles = $this->getStubFiles();
+		foreach ($this->composerAutoloaderProjectPaths as $composerAutoloaderProjectPath) {
+			$composerConfig = ComposerHelper::getComposerConfig($composerAutoloaderProjectPath);
+			if ($composerConfig === null) {
+				continue;
+			}
+
+			$vendorDir = ComposerHelper::getVendorDirFromComposerConfig($composerAutoloaderProjectPath, $composerConfig);
+			$vendorDir = strtr($vendorDir, '\\', '/');
+			$filteredStubFiles = array_filter(
+				$filteredStubFiles,
+				static fn (string $file): bool => !str_contains(strtr($file, '\\', '/'), $vendorDir)
+			);
+		}
+
+		return $this->cachedProjectFiles = array_values($filteredStubFiles);
+	}
+
+}
diff --git a/src/PhpDoc/DirectTypeNodeResolverExtensionRegistryProvider.php b/src/PhpDoc/DirectTypeNodeResolverExtensionRegistryProvider.php
new file mode 100644
index 00000000..68fc7b51
--- /dev/null
+++ b/src/PhpDoc/DirectTypeNodeResolverExtensionRegistryProvider.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+final class DirectTypeNodeResolverExtensionRegistryProvider implements TypeNodeResolverExtensionRegistryProvider
+{
+
+	public function __construct(private TypeNodeResolverExtensionRegistry $registry)
+	{
+	}
+
+	public function getRegistry(): TypeNodeResolverExtensionRegistry
+	{
+		return $this->registry;
+	}
+
+}
diff --git a/src/PhpDoc/JsonValidateStubFilesExtension.php b/src/PhpDoc/JsonValidateStubFilesExtension.php
new file mode 100644
index 00000000..c4c47bfa
--- /dev/null
+++ b/src/PhpDoc/JsonValidateStubFilesExtension.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Php\PhpVersion;
+
+final class JsonValidateStubFilesExtension implements StubFilesExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getFiles(): array
+	{
+		if (!$this->phpVersion->supportsJsonValidate()) {
+			return [];
+		}
+
+		return [__DIR__ . '/../../stubs/json_validate.stub'];
+	}
+
+}
diff --git a/src/PhpDoc/LazyTypeNodeResolverExtensionRegistryProvider.php b/src/PhpDoc/LazyTypeNodeResolverExtensionRegistryProvider.php
new file mode 100644
index 00000000..b70744c0
--- /dev/null
+++ b/src/PhpDoc/LazyTypeNodeResolverExtensionRegistryProvider.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyTypeNodeResolverExtensionRegistryProvider implements TypeNodeResolverExtensionRegistryProvider
+{
+
+	private ?TypeNodeResolverExtensionRegistry $registry = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getRegistry(): TypeNodeResolverExtensionRegistry
+	{
+		if ($this->registry === null) {
+			$this->registry = new TypeNodeResolverExtensionAwareRegistry(
+				$this->container->getByType(TypeNodeResolver::class),
+				$this->container->getServicesByTag(TypeNodeResolverExtension::EXTENSION_TAG),
+			);
+		}
+
+		return $this->registry;
+	}
+
+}
diff --git a/src/PhpDoc/PhpDocBlock.php b/src/PhpDoc/PhpDocBlock.php
new file mode 100644
index 00000000..38beefe9
--- /dev/null
+++ b/src/PhpDoc/PhpDocBlock.php
@@ -0,0 +1,409 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\PhpDoc\Tag\AssertTagParameter;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Reflection\ResolvedMethodReflection;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use function array_key_exists;
+use function count;
+use function is_bool;
+use function strtolower;
+use function substr;
+
+final class PhpDocBlock
+{
+
+	/**
+	 * @param array<string, string> $parameterNameMapping
+	 * @param array<int, self> $parents
+	 */
+	private function __construct(
+		private string $docComment,
+		private ?string $file,
+		private ClassReflection $classReflection,
+		private ?string $trait,
+		private bool $explicit,
+		private array $parameterNameMapping,
+		private array $parents,
+	)
+	{
+	}
+
+	public function getDocComment(): string
+	{
+		return $this->docComment;
+	}
+
+	public function getFile(): ?string
+	{
+		return $this->file;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getTrait(): ?string
+	{
+		return $this->trait;
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->explicit;
+	}
+
+	/**
+	 * @return array<int, self>
+	 */
+	public function getParents(): array
+	{
+		return $this->parents;
+	}
+
+	/**
+	 * @template T
+	 * @param array<string, T> $array
+	 * @return array<string, T>
+	 */
+	public function transformArrayKeysWithParameterNameMapping(array $array): array
+	{
+		$newArray = [];
+		foreach ($array as $key => $value) {
+			if (!array_key_exists($key, $this->parameterNameMapping)) {
+				continue;
+			}
+			$newArray[$this->parameterNameMapping[$key]] = $value;
+		}
+
+		return $newArray;
+	}
+
+	public function transformConditionalReturnTypeWithParameterNameMapping(Type $type): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+			if ($type instanceof ConditionalTypeForParameter) {
+				$parameterName = substr($type->getParameterName(), 1);
+				if (array_key_exists($parameterName, $this->parameterNameMapping)) {
+					$type = $type->changeParameterName('$' . $this->parameterNameMapping[$parameterName]);
+				}
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	public function transformAssertTagParameterWithParameterNameMapping(AssertTagParameter $parameter): AssertTagParameter
+	{
+		$parameterName = substr($parameter->getParameterName(), 1);
+		if (array_key_exists($parameterName, $this->parameterNameMapping)) {
+			$parameter = $parameter->changeParameterName('$' . $this->parameterNameMapping[$parameterName]);
+		}
+
+		return $parameter;
+	}
+
+	public static function resolvePhpDocBlockForProperty(
+		?string $docComment,
+		ClassReflection $classReflection,
+		?string $trait,
+		string $propertyName,
+		?string $file,
+		?bool $explicit,
+	): self
+	{
+		$docBlocksFromParents = [];
+		foreach (self::getParentReflections($classReflection) as $parentReflection) {
+			$oneResult = self::resolvePropertyPhpDocBlockFromClass(
+				$parentReflection,
+				$propertyName,
+				$explicit ?? $docComment !== null,
+			);
+
+			if ($oneResult === null) { // Null if it is private or from a wrong trait.
+				continue;
+			}
+
+			$docBlocksFromParents[] = $oneResult;
+		}
+
+		return new self(
+			$docComment ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+			$file,
+			$classReflection,
+			$trait,
+			$explicit ?? true,
+			[],
+			$docBlocksFromParents,
+		);
+	}
+
+	public static function resolvePhpDocBlockForConstant(
+		?string $docComment,
+		ClassReflection $classReflection,
+		string $constantName,
+		?string $file,
+		?bool $explicit,
+	): self
+	{
+		$docBlocksFromParents = [];
+		foreach (self::getParentReflections($classReflection) as $parentReflection) {
+			$oneResult = self::resolveConstantPhpDocBlockFromClass(
+				$parentReflection,
+				$constantName,
+				$explicit ?? $docComment !== null,
+			);
+
+			if ($oneResult === null) { // Null if it is private or from a wrong trait.
+				continue;
+			}
+
+			$docBlocksFromParents[] = $oneResult;
+		}
+
+		return new self(
+			$docComment ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+			$file,
+			$classReflection,
+			null,
+			$explicit ?? true,
+			[],
+			$docBlocksFromParents,
+		);
+	}
+
+	/**
+	 * @param array<int, string> $originalPositionalParameterNames
+	 * @param array<int, string> $newPositionalParameterNames
+	 */
+	public static function resolvePhpDocBlockForMethod(
+		?string $docComment,
+		ClassReflection $classReflection,
+		?string $trait,
+		string $methodName,
+		?string $file,
+		?bool $explicit,
+		array $originalPositionalParameterNames,
+		array $newPositionalParameterNames,
+	): self
+	{
+		$docBlocksFromParents = [];
+		foreach (self::getParentReflections($classReflection) as $parentReflection) {
+			$oneResult = self::resolveMethodPhpDocBlockFromClass(
+				$parentReflection,
+				$methodName,
+				$explicit ?? $docComment !== null,
+				$newPositionalParameterNames,
+			);
+
+			if ($oneResult === null) { // Null if it is private or from a wrong trait.
+				continue;
+			}
+
+			$docBlocksFromParents[] = $oneResult;
+		}
+
+		foreach ($classReflection->getTraits(true) as $traitReflection) {
+			if (!$traitReflection->hasNativeMethod($methodName)) {
+				continue;
+			}
+			$traitMethod = $traitReflection->getNativeMethod($methodName);
+			$abstract = $traitMethod->isAbstract();
+			if (is_bool($abstract)) {
+				if (!$abstract) {
+					continue;
+				}
+			} elseif (!$abstract->yes()) {
+				continue;
+			}
+
+			$methodVariant = $traitMethod->getOnlyVariant();
+			$positionalMethodParameterNames = [];
+			foreach ($methodVariant->getParameters() as $methodParameter) {
+				$positionalMethodParameterNames[] = $methodParameter->getName();
+			}
+
+			$docBlocksFromParents[] = new self(
+				$traitMethod->getDocComment() ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+				$classReflection->getFileName(),
+				$classReflection,
+				$traitReflection->getName(),
+				$explicit ?? $traitMethod->getDocComment() !== null,
+				self::remapParameterNames($newPositionalParameterNames, $positionalMethodParameterNames),
+				[],
+			);
+		}
+
+		return new self(
+			$docComment ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+			$file,
+			$classReflection,
+			$trait,
+			$explicit ?? true,
+			self::remapParameterNames($originalPositionalParameterNames, $newPositionalParameterNames),
+			$docBlocksFromParents,
+		);
+	}
+
+	/**
+	 * @param array<int, string> $originalPositionalParameterNames
+	 * @param array<int, string> $newPositionalParameterNames
+	 * @return array<string, string>
+	 */
+	private static function remapParameterNames(
+		array $originalPositionalParameterNames,
+		array $newPositionalParameterNames,
+	): array
+	{
+		$parameterNameMapping = [];
+		foreach ($originalPositionalParameterNames as $i => $parameterName) {
+			if (!array_key_exists($i, $newPositionalParameterNames)) {
+				continue;
+			}
+			$parameterNameMapping[$newPositionalParameterNames[$i]] = $parameterName;
+		}
+
+		return $parameterNameMapping;
+	}
+
+	/**
+	 * @return array<int, ClassReflection>
+	 */
+	private static function getParentReflections(ClassReflection $classReflection): array
+	{
+		$result = [];
+
+		$parent = $classReflection->getParentClass();
+		if ($parent !== null) {
+			$result[] = $parent;
+		}
+
+		foreach ($classReflection->getInterfaces() as $interface) {
+			$result[] = $interface;
+		}
+
+		return $result;
+	}
+
+	private static function resolveConstantPhpDocBlockFromClass(
+		ClassReflection $classReflection,
+		string $name,
+		bool $explicit,
+	): ?self
+	{
+		if ($classReflection->hasConstant($name)) {
+			$parentReflection = $classReflection->getConstant($name);
+			if ($parentReflection->isPrivate()) {
+				return null;
+			}
+
+			$classReflection = $parentReflection->getDeclaringClass();
+
+			return self::resolvePhpDocBlockForConstant(
+				$parentReflection->getDocComment() ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+				$classReflection,
+				$name,
+				$classReflection->getFileName(),
+				$explicit,
+			);
+		}
+
+		return null;
+	}
+
+	private static function resolvePropertyPhpDocBlockFromClass(
+		ClassReflection $classReflection,
+		string $name,
+		bool $explicit,
+	): ?self
+	{
+		if ($classReflection->hasNativeProperty($name)) {
+			$parentReflection = $classReflection->getNativeProperty($name);
+			if ($parentReflection->isPrivate()) {
+				return null;
+			}
+
+			$classReflection = $parentReflection->getDeclaringClass();
+			$traitReflection = $parentReflection->getDeclaringTrait();
+
+			$trait = $traitReflection !== null
+				? $traitReflection->getName()
+				: null;
+
+			return self::resolvePhpDocBlockForProperty(
+				$parentReflection->getDocComment() ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+				$classReflection,
+				$trait,
+				$name,
+				$classReflection->getFileName(),
+				$explicit,
+			);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, string> $positionalParameterNames
+	 */
+	private static function resolveMethodPhpDocBlockFromClass(
+		ClassReflection $classReflection,
+		string $name,
+		bool $explicit,
+		array $positionalParameterNames,
+	): ?self
+	{
+		if ($classReflection->hasNativeMethod($name)) {
+			$parentReflection = $classReflection->getNativeMethod($name);
+			if ($parentReflection->isPrivate()) {
+				return null;
+			}
+
+			$classReflection = $parentReflection->getDeclaringClass();
+			$traitReflection = null;
+			if ($parentReflection instanceof PhpMethodReflection || $parentReflection instanceof ResolvedMethodReflection) {
+				$traitReflection = $parentReflection->getDeclaringTrait();
+			}
+			$methodVariants = $parentReflection->getVariants();
+			$positionalMethodParameterNames = [];
+			$lowercaseMethodName = strtolower($parentReflection->getName());
+			if (
+				count($methodVariants) === 1
+				&& $lowercaseMethodName !== '__construct'
+				&& $lowercaseMethodName !== strtolower($parentReflection->getDeclaringClass()->getName())
+			) {
+				$methodParameters = $methodVariants[0]->getParameters();
+				foreach ($methodParameters as $methodParameter) {
+					$positionalMethodParameterNames[] = $methodParameter->getName();
+				}
+			} else {
+				$positionalMethodParameterNames = $positionalParameterNames;
+			}
+
+			$trait = $traitReflection !== null
+				? $traitReflection->getName()
+				: null;
+
+			return self::resolvePhpDocBlockForMethod(
+				$parentReflection->getDocComment() ?? ResolvedPhpDocBlock::EMPTY_DOC_STRING,
+				$classReflection,
+				$trait,
+				$name,
+				$classReflection->getFileName(),
+				$explicit,
+				$positionalParameterNames,
+				$positionalMethodParameterNames,
+			);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/PhpDoc/PhpDocInheritanceResolver.php b/src/PhpDoc/PhpDocInheritanceResolver.php
new file mode 100644
index 00000000..4a2a431d
--- /dev/null
+++ b/src/PhpDoc/PhpDocInheritanceResolver.php
@@ -0,0 +1,157 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Type\FileTypeMapper;
+use function array_map;
+use function strtolower;
+
+final class PhpDocInheritanceResolver
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private StubPhpDocProvider $stubPhpDocProvider,
+	)
+	{
+	}
+
+	public function resolvePhpDocForProperty(
+		?string $docComment,
+		ClassReflection $classReflection,
+		?string $classReflectionFileName,
+		?string $declaringTraitName,
+		string $propertyName,
+	): ResolvedPhpDocBlock
+	{
+		$phpDocBlock = PhpDocBlock::resolvePhpDocBlockForProperty(
+			$docComment,
+			$classReflection,
+			null,
+			$propertyName,
+			$classReflectionFileName,
+			null,
+		);
+
+		return $this->docBlockTreeToResolvedDocBlock($phpDocBlock, $declaringTraitName, null, $propertyName, null);
+	}
+
+	public function resolvePhpDocForConstant(
+		?string $docComment,
+		ClassReflection $classReflection,
+		?string $classReflectionFileName,
+		string $constantName,
+	): ResolvedPhpDocBlock
+	{
+		$phpDocBlock = PhpDocBlock::resolvePhpDocBlockForConstant(
+			$docComment,
+			$classReflection,
+			$constantName,
+			$classReflectionFileName,
+			null,
+		);
+
+		return $this->docBlockTreeToResolvedDocBlock($phpDocBlock, null, null, null, $constantName);
+	}
+
+	/**
+	 * @param array<int, string> $positionalParameterNames
+	 */
+	public function resolvePhpDocForMethod(
+		?string $docComment,
+		?string $fileName,
+		ClassReflection $classReflection,
+		?string $declaringTraitName,
+		string $methodName,
+		array $positionalParameterNames,
+	): ResolvedPhpDocBlock
+	{
+		$phpDocBlock = PhpDocBlock::resolvePhpDocBlockForMethod(
+			$docComment,
+			$classReflection,
+			$declaringTraitName,
+			$methodName,
+			$fileName,
+			null,
+			$positionalParameterNames,
+			$positionalParameterNames,
+		);
+
+		return $this->docBlockTreeToResolvedDocBlock($phpDocBlock, $phpDocBlock->getTrait(), $methodName, null, null);
+	}
+
+	private function docBlockTreeToResolvedDocBlock(PhpDocBlock $phpDocBlock, ?string $traitName, ?string $functionName, ?string $propertyName, ?string $constantName): ResolvedPhpDocBlock
+	{
+		$parents = [];
+		$parentPhpDocBlocks = [];
+
+		foreach ($phpDocBlock->getParents() as $parentPhpDocBlock) {
+			if (
+				$functionName !== null
+				&& strtolower($functionName) === '__construct'
+				&& $parentPhpDocBlock->getClassReflection()->isBuiltin()
+			) {
+				continue;
+			}
+			$parents[] = $this->docBlockTreeToResolvedDocBlock(
+				$parentPhpDocBlock,
+				$parentPhpDocBlock->getTrait(),
+				$functionName,
+				$propertyName,
+				$constantName,
+			);
+			$parentPhpDocBlocks[] = $parentPhpDocBlock;
+		}
+
+		$oneResolvedDockBlock = $this->docBlockToResolvedDocBlock($phpDocBlock, $traitName, $functionName, $propertyName, $constantName);
+		return $oneResolvedDockBlock->merge($parents, $parentPhpDocBlocks);
+	}
+
+	private function docBlockToResolvedDocBlock(PhpDocBlock $phpDocBlock, ?string $traitName, ?string $functionName, ?string $propertyName, ?string $constantName): ResolvedPhpDocBlock
+	{
+		$classReflection = $phpDocBlock->getClassReflection();
+		if ($functionName !== null && $classReflection->getNativeReflection()->hasMethod($functionName)) {
+			$methodReflection = $classReflection->getNativeReflection()->getMethod($functionName);
+			$stub = $this->stubPhpDocProvider->findMethodPhpDoc($classReflection->getName(), $classReflection->getName(), $functionName, array_map(static fn (ReflectionParameter $parameter): string => $parameter->getName(), $methodReflection->getParameters()));
+			if ($stub !== null) {
+				return $stub;
+			}
+		}
+
+		if ($propertyName !== null && $classReflection->getNativeReflection()->hasProperty($propertyName)) {
+			$stub = $this->stubPhpDocProvider->findPropertyPhpDoc($classReflection->getName(), $propertyName);
+
+			if ($stub === null) {
+				$propertyReflection = $classReflection->getNativeReflection()->getProperty($propertyName);
+
+				$propertyDeclaringClass = $propertyReflection->getBetterReflection()->getDeclaringClass();
+
+				if ($propertyDeclaringClass->isTrait() && (! $propertyReflection->getDeclaringClass()->isTrait() || $propertyReflection->getDeclaringClass()->getName() !== $propertyDeclaringClass->getName())) {
+					$stub = $this->stubPhpDocProvider->findPropertyPhpDoc($propertyDeclaringClass->getName(), $propertyName);
+				}
+			}
+			if ($stub !== null) {
+				return $stub;
+			}
+		}
+
+		if ($constantName !== null && $classReflection->getNativeReflection()->hasConstant($constantName)) {
+			$stub = $this->stubPhpDocProvider->findClassConstantPhpDoc($classReflection->getName(), $constantName);
+			if ($stub !== null) {
+				return $stub;
+			}
+		}
+
+		return $this->fileTypeMapper->getResolvedPhpDoc(
+			$phpDocBlock->getFile(),
+			$classReflection->getName(),
+			$traitName,
+			$functionName,
+			$phpDocBlock->getDocComment(),
+		);
+	}
+
+}
diff --git a/src/PhpDoc/PhpDocNodeResolver.php b/src/PhpDoc/PhpDocNodeResolver.php
new file mode 100644
index 00000000..0e7e5a79
--- /dev/null
+++ b/src/PhpDoc/PhpDocNodeResolver.php
@@ -0,0 +1,754 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\Tag\AssertTag;
+use PHPStan\PhpDoc\Tag\AssertTagParameter;
+use PHPStan\PhpDoc\Tag\DeprecatedTag;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\PhpDoc\Tag\MethodTag;
+use PHPStan\PhpDoc\Tag\MethodTagParameter;
+use PHPStan\PhpDoc\Tag\MixinTag;
+use PHPStan\PhpDoc\Tag\ParamClosureThisTag;
+use PHPStan\PhpDoc\Tag\ParamOutTag;
+use PHPStan\PhpDoc\Tag\ParamTag;
+use PHPStan\PhpDoc\Tag\PropertyTag;
+use PHPStan\PhpDoc\Tag\RequireExtendsTag;
+use PHPStan\PhpDoc\Tag\RequireImplementsTag;
+use PHPStan\PhpDoc\Tag\ReturnTag;
+use PHPStan\PhpDoc\Tag\SelfOutTypeTag;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDoc\Tag\ThrowsTag;
+use PHPStan\PhpDoc\Tag\TypeAliasImportTag;
+use PHPStan\PhpDoc\Tag\TypeAliasTag;
+use PHPStan\PhpDoc\Tag\UsesTag;
+use PHPStan\PhpDoc\Tag\VarTag;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNullNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\MixinTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function array_reverse;
+use function count;
+use function in_array;
+use function method_exists;
+use function str_starts_with;
+use function substr;
+
+final class PhpDocNodeResolver
+{
+
+	public function __construct(
+		private TypeNodeResolver $typeNodeResolver,
+		private ConstExprNodeResolver $constExprNodeResolver,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+	)
+	{
+	}
+
+	/**
+	 * @return array<(string|int), VarTag>
+	 */
+	public function resolveVarTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+		$resolvedByTag = [];
+		foreach (['@var', '@phan-var', '@psalm-var', '@phpstan-var'] as $tagName) {
+			$tagResolved = [];
+			foreach ($phpDocNode->getVarTagValues($tagName) as $tagValue) {
+				$type = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+				if ($this->shouldSkipType($tagName, $type)) {
+					continue;
+				}
+				if ($tagValue->variableName !== '') {
+					$variableName = substr($tagValue->variableName, 1);
+					$resolved[$variableName] = new VarTag($type);
+				} else {
+					$varTag = new VarTag($type);
+					$tagResolved[] = $varTag;
+				}
+			}
+
+			if (count($tagResolved) === 0) {
+				continue;
+			}
+
+			$resolvedByTag[] = $tagResolved;
+		}
+
+		if (count($resolvedByTag) > 0) {
+			return array_reverse($resolvedByTag)[0];
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, PropertyTag>
+	 */
+	public function resolvePropertyTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@property', '@phpstan-property'] as $tagName) {
+			foreach ($phpDocNode->getPropertyTagValues($tagName) as $tagValue) {
+				$propertyName = substr($tagValue->propertyName, 1);
+				$propertyType = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+
+				$resolved[$propertyName] = new PropertyTag(
+					$propertyType,
+					$propertyType,
+				);
+			}
+		}
+
+		foreach (['@property-read', '@phpstan-property-read'] as $tagName) {
+			foreach ($phpDocNode->getPropertyReadTagValues($tagName) as $tagValue) {
+				$propertyName = substr($tagValue->propertyName, 1);
+				$propertyType = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+
+				$writableType = null;
+				if (array_key_exists($propertyName, $resolved)) {
+					$writableType = $resolved[$propertyName]->getWritableType();
+				}
+
+				$resolved[$propertyName] = new PropertyTag(
+					$propertyType,
+					$writableType,
+				);
+			}
+		}
+
+		foreach (['@property-write', '@phpstan-property-write'] as $tagName) {
+			foreach ($phpDocNode->getPropertyWriteTagValues($tagName) as $tagValue) {
+				$propertyName = substr($tagValue->propertyName, 1);
+				$propertyType = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+
+				$readableType = null;
+				if (array_key_exists($propertyName, $resolved)) {
+					$readableType = $resolved[$propertyName]->getReadableType();
+				}
+
+				$resolved[$propertyName] = new PropertyTag(
+					$readableType,
+					$propertyType,
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, MethodTag>
+	 */
+	public function resolveMethodTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+		$originalNameScope = $nameScope;
+
+		foreach (['@method', '@phan-method', '@psalm-method', '@phpstan-method'] as $tagName) {
+			foreach ($phpDocNode->getMethodTagValues($tagName) as $tagValue) {
+				$nameScope = $originalNameScope;
+				$templateTags = [];
+
+				if (count($tagValue->templateTypes) > 0 && $nameScope->getClassName() !== null) {
+					foreach ($tagValue->templateTypes as $templateType) {
+						$templateTags[$templateType->name] = new TemplateTag(
+							$templateType->name,
+							$templateType->bound !== null
+								? $this->typeNodeResolver->resolve($templateType->bound, $nameScope)
+								: new MixedType(),
+							$templateType->default !== null
+								? $this->typeNodeResolver->resolve($templateType->default, $nameScope)
+								: null,
+							TemplateTypeVariance::createInvariant(),
+						);
+					}
+
+					$templateTypeScope = TemplateTypeScope::createWithMethod($nameScope->getClassName(), $tagValue->methodName);
+					$templateTypeMap = new TemplateTypeMap(array_map(static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag), $templateTags));
+					$nameScope = $nameScope->withTemplateTypeMap($templateTypeMap);
+				}
+
+				$parameters = [];
+				foreach ($tagValue->parameters as $parameterNode) {
+					$parameterName = substr($parameterNode->parameterName, 1);
+					$type = $parameterNode->type !== null
+						? $this->typeNodeResolver->resolve($parameterNode->type, $nameScope)
+						: new MixedType();
+					if ($parameterNode->defaultValue instanceof ConstExprNullNode) {
+						$type = TypeCombinator::addNull($type);
+					}
+					$defaultValue = null;
+					if ($parameterNode->defaultValue !== null) {
+						$defaultValue = $this->constExprNodeResolver->resolve($parameterNode->defaultValue, $nameScope);
+					}
+
+					$parameters[$parameterName] = new MethodTagParameter(
+						$type,
+						$parameterNode->isReference
+							? PassedByReference::createCreatesNewVariable()
+							: PassedByReference::createNo(),
+						$parameterNode->isVariadic || $parameterNode->defaultValue !== null,
+						$parameterNode->isVariadic,
+						$defaultValue,
+					);
+				}
+
+				$resolved[$tagValue->methodName] = new MethodTag(
+					$tagValue->returnType !== null
+						? $this->typeNodeResolver->resolve($tagValue->returnType, $nameScope)
+						: new MixedType(),
+					$tagValue->isStatic,
+					$parameters,
+					$templateTags,
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, ExtendsTag>
+	 */
+	public function resolveExtendsTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@extends', '@phan-extends', '@phan-inherits', '@template-extends', '@phpstan-extends'] as $tagName) {
+			foreach ($phpDocNode->getExtendsTagValues($tagName) as $tagValue) {
+				$resolved[$nameScope->resolveStringName($tagValue->type->type->name)] = new ExtendsTag(
+					$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, ImplementsTag>
+	 */
+	public function resolveImplementsTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@implements', '@template-implements', '@phpstan-implements'] as $tagName) {
+			foreach ($phpDocNode->getImplementsTagValues($tagName) as $tagValue) {
+				$resolved[$nameScope->resolveStringName($tagValue->type->type->name)] = new ImplementsTag(
+					$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, UsesTag>
+	 */
+	public function resolveUsesTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@use', '@template-use', '@phpstan-use'] as $tagName) {
+			foreach ($phpDocNode->getUsesTagValues($tagName) as $tagValue) {
+				$resolved[$nameScope->resolveStringName($tagValue->type->type->name)] = new UsesTag(
+					$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, TemplateTag>
+	 */
+	public function resolveTemplateTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+		$resolvedPrefix = [];
+
+		$prefixPriority = [
+			'' => 0,
+			'phan' => 1,
+			'psalm' => 2,
+			'phpstan' => 3,
+		];
+
+		foreach ($phpDocNode->getTags() as $phpDocTagNode) {
+			$valueNode = $phpDocTagNode->value;
+			if (!$valueNode instanceof TemplateTagValueNode) {
+				continue;
+			}
+
+			$tagName = $phpDocTagNode->name;
+			if (in_array($tagName, ['@template', '@phan-template', '@psalm-template', '@phpstan-template'], true)) {
+				$variance = TemplateTypeVariance::createInvariant();
+			} elseif (in_array($tagName, ['@template-covariant', '@psalm-template-covariant', '@phpstan-template-covariant'], true)) {
+				$variance = TemplateTypeVariance::createCovariant();
+			} elseif (in_array($tagName, ['@template-contravariant', '@psalm-template-contravariant', '@phpstan-template-contravariant'], true)) {
+				$variance = TemplateTypeVariance::createContravariant();
+			} else {
+				continue;
+			}
+
+			if (str_starts_with($tagName, '@phan-')) {
+				$prefix = 'phan';
+			} elseif (str_starts_with($tagName, '@psalm-')) {
+				$prefix = 'psalm';
+			} elseif (str_starts_with($tagName, '@phpstan-')) {
+				$prefix = 'phpstan';
+			} else {
+				$prefix = '';
+			}
+
+			if (isset($resolved[$valueNode->name])) {
+				$setPrefix = $resolvedPrefix[$valueNode->name];
+				if ($prefixPriority[$prefix] <= $prefixPriority[$setPrefix]) {
+					continue;
+				}
+			}
+
+			$nameScopeWithoutCurrent = $nameScope->unsetTemplateType($valueNode->name);
+
+			$resolved[$valueNode->name] = new TemplateTag(
+				$valueNode->name,
+				$valueNode->bound !== null ? $this->typeNodeResolver->resolve($valueNode->bound, $nameScopeWithoutCurrent) : new MixedType(true),
+				$valueNode->default !== null ? $this->typeNodeResolver->resolve($valueNode->default, $nameScopeWithoutCurrent) : null,
+				$variance,
+			);
+			$resolvedPrefix[$valueNode->name] = $prefix;
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, ParamTag>
+	 */
+	public function resolveParamTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@param', '@phan-param', '@psalm-param', '@phpstan-param'] as $tagName) {
+			foreach ($phpDocNode->getParamTagValues($tagName) as $tagValue) {
+				$parameterName = substr($tagValue->parameterName, 1);
+				$parameterType = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+				if ($this->shouldSkipType($tagName, $parameterType)) {
+					continue;
+				}
+
+				$resolved[$parameterName] = new ParamTag(
+					$parameterType,
+					$tagValue->isVariadic,
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, ParamOutTag>
+	 */
+	public function resolveParamOutTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		if (!method_exists($phpDocNode, 'getParamOutTypeTagValues')) {
+			return [];
+		}
+
+		$resolved = [];
+
+		foreach (['@param-out', '@psalm-param-out', '@phpstan-param-out'] as $tagName) {
+			foreach ($phpDocNode->getParamOutTypeTagValues($tagName) as $tagValue) {
+				$parameterName = substr($tagValue->parameterName, 1);
+				$parameterType = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+				if ($this->shouldSkipType($tagName, $parameterType)) {
+					continue;
+				}
+
+				$resolved[$parameterName] = new ParamOutTag(
+					$parameterType,
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, bool>
+	 */
+	public function resolveParamImmediatelyInvokedCallable(PhpDocNode $phpDocNode): array
+	{
+		$parameters = [];
+		foreach (['@param-immediately-invoked-callable', '@phpstan-param-immediately-invoked-callable'] as $tagName) {
+			foreach ($phpDocNode->getParamImmediatelyInvokedCallableTagValues($tagName) as $tagValue) {
+				$parameterName = substr($tagValue->parameterName, 1);
+				$parameters[$parameterName] = true;
+			}
+		}
+		foreach (['@param-later-invoked-callable', '@phpstan-param-later-invoked-callable'] as $tagName) {
+			foreach ($phpDocNode->getParamLaterInvokedCallableTagValues($tagName) as $tagValue) {
+				$parameterName = substr($tagValue->parameterName, 1);
+				$parameters[$parameterName] = false;
+			}
+		}
+
+		return $parameters;
+	}
+
+	/**
+	 * @return array<string, ParamClosureThisTag>
+	 */
+	public function resolveParamClosureThisTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$closureThisTypes = [];
+		foreach (['@param-closure-this', '@phpstan-param-closure-this'] as $tagName) {
+			foreach ($phpDocNode->getParamClosureThisTagValues($tagName) as $tagValue) {
+				$parameterName = substr($tagValue->parameterName, 1);
+				$closureThisTypes[$parameterName] = new ParamClosureThisTag(
+					TypeCombinator::intersect(
+						$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+						new ObjectWithoutClassType(),
+					),
+				);
+			}
+		}
+
+		return $closureThisTypes;
+	}
+
+	public function resolveReturnTag(PhpDocNode $phpDocNode, NameScope $nameScope): ?ReturnTag
+	{
+		$resolved = null;
+
+		foreach (['@return', '@phan-return', '@phan-real-return', '@psalm-return', '@phpstan-return'] as $tagName) {
+			foreach ($phpDocNode->getReturnTagValues($tagName) as $tagValue) {
+				$type = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+				if ($this->shouldSkipType($tagName, $type)) {
+					continue;
+				}
+				$resolved = new ReturnTag($type, true);
+			}
+		}
+
+		return $resolved;
+	}
+
+	public function resolveThrowsTags(PhpDocNode $phpDocNode, NameScope $nameScope): ?ThrowsTag
+	{
+		foreach (['@phpstan-throws', '@throws'] as $tagName) {
+			$types = [];
+
+			foreach ($phpDocNode->getThrowsTagValues($tagName) as $tagValue) {
+				$type = $this->typeNodeResolver->resolve($tagValue->type, $nameScope);
+				if ($this->shouldSkipType($tagName, $type)) {
+					continue;
+				}
+
+				$types[] = $type;
+			}
+
+			if (count($types) > 0) {
+				return new ThrowsTag(TypeCombinator::union(...$types));
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return array<MixinTag>
+	 */
+	public function resolveMixinTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		return array_map(fn (MixinTagValueNode $mixinTagValueNode): MixinTag => new MixinTag(
+			$this->typeNodeResolver->resolve($mixinTagValueNode->type, $nameScope),
+		), $phpDocNode->getMixinTagValues());
+	}
+
+	/**
+	 * @return array<RequireExtendsTag>
+	 */
+	public function resolveRequireExtendsTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@psalm-require-extends', '@phpstan-require-extends'] as $tagName) {
+			foreach ($phpDocNode->getRequireExtendsTagValues($tagName) as $tagValue) {
+				$resolved[] = new RequireExtendsTag(
+					$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<RequireImplementsTag>
+	 */
+	public function resolveRequireImplementsTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@psalm-require-implements', '@phpstan-require-implements'] as $tagName) {
+			foreach ($phpDocNode->getRequireImplementsTagValues($tagName) as $tagValue) {
+				$resolved[] = new RequireImplementsTag(
+					$this->typeNodeResolver->resolve($tagValue->type, $nameScope),
+				);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, TypeAliasTag>
+	 */
+	public function resolveTypeAliasTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@phan-type', '@psalm-type', '@phpstan-type'] as $tagName) {
+			foreach ($phpDocNode->getTypeAliasTagValues($tagName) as $typeAliasTagValue) {
+				$alias = $typeAliasTagValue->alias;
+				$typeNode = $typeAliasTagValue->type;
+				$resolved[$alias] = new TypeAliasTag($alias, $typeNode, $nameScope);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return array<string, TypeAliasImportTag>
+	 */
+	public function resolveTypeAliasImportTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		$resolved = [];
+
+		foreach (['@psalm-import-type', '@phpstan-import-type'] as $tagName) {
+			foreach ($phpDocNode->getTypeAliasImportTagValues($tagName) as $typeAliasImportTagValue) {
+				$importedAlias = $typeAliasImportTagValue->importedAlias;
+				$importedFrom = $nameScope->resolveStringName($typeAliasImportTagValue->importedFrom->name);
+				$importedAs = $typeAliasImportTagValue->importedAs;
+				$resolved[$importedAs ?? $importedAlias] = new TypeAliasImportTag($importedAlias, $importedFrom, $importedAs);
+			}
+		}
+
+		return $resolved;
+	}
+
+	/**
+	 * @return AssertTag[]
+	 */
+	public function resolveAssertTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
+	{
+		foreach (['@phpstan', '@psalm', '@phan'] as $prefix) {
+			$resolved = array_merge(
+				$this->resolveAssertTagsFor($phpDocNode, $nameScope, $prefix . '-assert', AssertTag::NULL),
+				$this->resolveAssertTagsFor($phpDocNode, $nameScope, $prefix . '-assert-if-true', AssertTag::IF_TRUE),
+				$this->resolveAssertTagsFor($phpDocNode, $nameScope, $prefix . '-assert-if-false', AssertTag::IF_FALSE),
+			);
+
+			if (count($resolved) > 0) {
+				return $resolved;
+			}
+		}
+
+		return [];
+	}
+
+	/**
+	 * @param AssertTag::NULL|AssertTag::IF_TRUE|AssertTag::IF_FALSE $if
+	 * @return AssertTag[]
+	 */
+	private function resolveAssertTagsFor(PhpDocNode $phpDocNode, NameScope $nameScope, string $tagName, string $if): array
+	{
+		$resolved = [];
+
+		foreach ($phpDocNode->getAssertTagValues($tagName) as $assertTagValue) {
+			$type = $this->typeNodeResolver->resolve($assertTagValue->type, $nameScope);
+			$parameter = new AssertTagParameter($assertTagValue->parameter, null, null);
+			$resolved[] = new AssertTag($if, $type, $parameter, $assertTagValue->isNegated, $assertTagValue->isEquality, true);
+		}
+
+		foreach ($phpDocNode->getAssertPropertyTagValues($tagName) as $assertTagValue) {
+			$type = $this->typeNodeResolver->resolve($assertTagValue->type, $nameScope);
+			$parameter = new AssertTagParameter($assertTagValue->parameter, $assertTagValue->property, null);
+			$resolved[] = new AssertTag($if, $type, $parameter, $assertTagValue->isNegated, $assertTagValue->isEquality, true);
+		}
+
+		foreach ($phpDocNode->getAssertMethodTagValues($tagName) as $assertTagValue) {
+			$type = $this->typeNodeResolver->resolve($assertTagValue->type, $nameScope);
+			$parameter = new AssertTagParameter($assertTagValue->parameter, null, $assertTagValue->method);
+			$resolved[] = new AssertTag($if, $type, $parameter, $assertTagValue->isNegated, $assertTagValue->isEquality, true);
+		}
+
+		return $resolved;
+	}
+
+	public function resolveSelfOutTypeTag(PhpDocNode $phpDocNode, NameScope $nameScope): ?SelfOutTypeTag
+	{
+		if (!method_exists($phpDocNode, 'getSelfOutTypeTagValues')) {
+			return null;
+		}
+
+		foreach (['@phpstan-this-out', '@phpstan-self-out', '@psalm-this-out', '@psalm-self-out'] as $tagName) {
+			foreach ($phpDocNode->getSelfOutTypeTagValues($tagName) as $selfOutTypeTagValue) {
+				$type = $this->typeNodeResolver->resolve($selfOutTypeTagValue->type, $nameScope);
+				return new SelfOutTypeTag($type);
+			}
+		}
+
+		return null;
+	}
+
+	public function resolveDeprecatedTag(PhpDocNode $phpDocNode, NameScope $nameScope): ?DeprecatedTag
+	{
+		foreach ($phpDocNode->getDeprecatedTagValues() as $deprecatedTagValue) {
+			$description = (string) $deprecatedTagValue;
+			return new DeprecatedTag($description === '' ? null : $description);
+		}
+
+		return null;
+	}
+
+	public function resolveIsDeprecated(PhpDocNode $phpDocNode): bool
+	{
+		$deprecatedTags = $phpDocNode->getTagsByName('@deprecated');
+
+		return count($deprecatedTags) > 0;
+	}
+
+	public function resolveIsNotDeprecated(PhpDocNode $phpDocNode): bool
+	{
+		$notDeprecatedTags = $phpDocNode->getTagsByName('@not-deprecated');
+
+		return count($notDeprecatedTags) > 0;
+	}
+
+	public function resolveIsInternal(PhpDocNode $phpDocNode): bool
+	{
+		$internalTags = $phpDocNode->getTagsByName('@internal');
+
+		return count($internalTags) > 0;
+	}
+
+	public function resolveIsFinal(PhpDocNode $phpDocNode): bool
+	{
+		$finalTags = $phpDocNode->getTagsByName('@final');
+
+		return count($finalTags) > 0;
+	}
+
+	public function resolveIsPure(PhpDocNode $phpDocNode): bool
+	{
+		foreach ($phpDocNode->getTags() as $phpDocTagNode) {
+			if (in_array($phpDocTagNode->name, ['@pure', '@phan-pure', '@phan-side-effect-free', '@psalm-pure', '@phpstan-pure'], true)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function resolveIsImpure(PhpDocNode $phpDocNode): bool
+	{
+		foreach ($phpDocNode->getTags() as $phpDocTagNode) {
+			if (in_array($phpDocTagNode->name, ['@impure', '@phpstan-impure'], true)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function resolveIsReadOnly(PhpDocNode $phpDocNode): bool
+	{
+		foreach (['@readonly', '@phan-read-only', '@psalm-readonly', '@phpstan-readonly', '@phpstan-readonly-allow-private-mutation', '@psalm-readonly-allow-private-mutation'] as $tagName) {
+			$tags = $phpDocNode->getTagsByName($tagName);
+
+			if (count($tags) > 0) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function resolveIsImmutable(PhpDocNode $phpDocNode): bool
+	{
+		foreach (['@immutable', '@phan-immutable', '@psalm-immutable', '@phpstan-immutable'] as $tagName) {
+			$tags = $phpDocNode->getTagsByName($tagName);
+
+			if (count($tags) > 0) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function resolveHasConsistentConstructor(PhpDocNode $phpDocNode): bool
+	{
+		foreach (['@consistent-constructor', '@phpstan-consistent-constructor', '@psalm-consistent-constructor'] as $tagName) {
+			$tags = $phpDocNode->getTagsByName($tagName);
+
+			if (count($tags) > 0) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function resolveAcceptsNamedArguments(PhpDocNode $phpDocNode): bool
+	{
+		return count($phpDocNode->getTagsByName('@no-named-arguments')) === 0;
+	}
+
+	private function shouldSkipType(string $tagName, Type $type): bool
+	{
+		if (!str_starts_with($tagName, '@psalm-')) {
+			return false;
+		}
+
+		return $this->unresolvableTypeHelper->containsUnresolvableType($type);
+	}
+
+	public function resolveAllowPrivateMutation(PhpDocNode $phpDocNode): bool
+	{
+		foreach (['@phpstan-readonly-allow-private-mutation', '@phpstan-allow-private-mutation', '@psalm-readonly-allow-private-mutation', '@psalm-allow-private-mutation'] as $tagName) {
+			$tags = $phpDocNode->getTagsByName($tagName);
+
+			if (count($tags) > 0) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+}
diff --git a/src/PhpDoc/PhpDocStringResolver.php b/src/PhpDoc/PhpDocStringResolver.php
new file mode 100644
index 00000000..d2543c39
--- /dev/null
+++ b/src/PhpDoc/PhpDocStringResolver.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocNode;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\PhpDocParser;
+use PHPStan\PhpDocParser\Parser\TokenIterator;
+
+final class PhpDocStringResolver
+{
+
+	public function __construct(private Lexer $phpDocLexer, private PhpDocParser $phpDocParser)
+	{
+	}
+
+	public function resolve(string $phpDocString): PhpDocNode
+	{
+		$tokens = new TokenIterator($this->phpDocLexer->tokenize($phpDocString));
+		$phpDocNode = $this->phpDocParser->parse($tokens);
+		$tokens->consumeTokenType(Lexer::TOKEN_END); // @phpstan-ignore missingType.checkedException
+
+		return $phpDocNode;
+	}
+
+}
diff --git a/src/PhpDoc/ReflectionClassStubFilesExtension.php b/src/PhpDoc/ReflectionClassStubFilesExtension.php
new file mode 100644
index 00000000..2537fd96
--- /dev/null
+++ b/src/PhpDoc/ReflectionClassStubFilesExtension.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Php\PhpVersion;
+
+final class ReflectionClassStubFilesExtension implements StubFilesExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getFiles(): array
+	{
+		if (!$this->phpVersion->supportsLazyObjects()) {
+			return [
+				__DIR__ . '/../../stubs/ReflectionClass.stub',
+			];
+		}
+
+		return [
+			__DIR__ . '/../../stubs/ReflectionClassWithLazyObjects.stub',
+		];
+	}
+
+}
diff --git a/src/PhpDoc/ReflectionEnumStubFilesExtension.php b/src/PhpDoc/ReflectionEnumStubFilesExtension.php
new file mode 100644
index 00000000..1ddb1de3
--- /dev/null
+++ b/src/PhpDoc/ReflectionEnumStubFilesExtension.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Php\PhpVersion;
+
+final class ReflectionEnumStubFilesExtension implements StubFilesExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getFiles(): array
+	{
+		if (!$this->phpVersion->supportsEnums()) {
+			return [];
+		}
+
+		if (!$this->phpVersion->supportsLazyObjects()) {
+			return [__DIR__ . '/../../stubs/ReflectionEnum.stub'];
+		}
+
+		return [__DIR__ . '/../../stubs/ReflectionEnumWithLazyObjects.stub'];
+	}
+
+}
diff --git a/src/PhpDoc/ResolvedPhpDocBlock.php b/src/PhpDoc/ResolvedPhpDocBlock.php
new file mode 100644
index 00000000..b8ae66ff
--- /dev/null
+++ b/src/PhpDoc/ResolvedPhpDocBlock.php
@@ -0,0 +1,1246 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\Tag\AssertTag;
+use PHPStan\PhpDoc\Tag\DeprecatedTag;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\PhpDoc\Tag\MethodTag;
+use PHPStan\PhpDoc\Tag\MixinTag;
+use PHPStan\PhpDoc\Tag\ParamClosureThisTag;
+use PHPStan\PhpDoc\Tag\ParamOutTag;
+use PHPStan\PhpDoc\Tag\ParamTag;
+use PHPStan\PhpDoc\Tag\PropertyTag;
+use PHPStan\PhpDoc\Tag\RequireExtendsTag;
+use PHPStan\PhpDoc\Tag\RequireImplementsTag;
+use PHPStan\PhpDoc\Tag\ReturnTag;
+use PHPStan\PhpDoc\Tag\SelfOutTypeTag;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDoc\Tag\ThrowsTag;
+use PHPStan\PhpDoc\Tag\TypeAliasImportTag;
+use PHPStan\PhpDoc\Tag\TypeAliasTag;
+use PHPStan\PhpDoc\Tag\TypedTag;
+use PHPStan\PhpDoc\Tag\UsesTag;
+use PHPStan\PhpDoc\Tag\VarTag;
+use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocNode;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use function array_key_exists;
+use function array_map;
+use function count;
+use function is_bool;
+use function substr;
+
+/**
+ * @api
+ */
+final class ResolvedPhpDocBlock
+{
+
+	public const EMPTY_DOC_STRING = '/** */';
+
+	private PhpDocNode $phpDocNode;
+
+	/** @var PhpDocNode[] */
+	private array $phpDocNodes;
+
+	private string $phpDocString;
+
+	private ?string $filename;
+
+	private ?NameScope $nameScope = null;
+
+	private TemplateTypeMap $templateTypeMap;
+
+	/** @var array<string, TemplateTag> */
+	private array $templateTags;
+
+	private PhpDocNodeResolver $phpDocNodeResolver;
+
+	private ReflectionProvider $reflectionProvider;
+
+	/** @var array<(string|int), VarTag>|false */
+	private array|false $varTags = false;
+
+	/** @var array<string, MethodTag>|false */
+	private array|false $methodTags = false;
+
+	/** @var array<string, PropertyTag>|false */
+	private array|false $propertyTags = false;
+
+	/** @var array<string, ExtendsTag>|false */
+	private array|false $extendsTags = false;
+
+	/** @var array<string, ImplementsTag>|false */
+	private array|false $implementsTags = false;
+
+	/** @var array<string, UsesTag>|false */
+	private array|false $usesTags = false;
+
+	/** @var array<string, ParamTag>|false */
+	private array|false $paramTags = false;
+
+	/** @var array<string, ParamOutTag>|false */
+	private array|false $paramOutTags = false;
+
+	/** @var array<string, bool>|false */
+	private array|false $paramsImmediatelyInvokedCallable = false;
+
+	/** @var array<string, ParamClosureThisTag>|false */
+	private array|false $paramClosureThisTags = false;
+
+	private ReturnTag|false|null $returnTag = false;
+
+	private ThrowsTag|false|null $throwsTag = false;
+
+	/** @var array<MixinTag>|false */
+	private array|false $mixinTags = false;
+
+	/** @var array<RequireExtendsTag>|false */
+	private array|false $requireExtendsTags = false;
+
+	/** @var array<RequireImplementsTag>|false */
+	private array|false $requireImplementsTags = false;
+
+	/** @var array<TypeAliasTag>|false */
+	private array|false $typeAliasTags = false;
+
+	/** @var array<TypeAliasImportTag>|false */
+	private array|false $typeAliasImportTags = false;
+
+	/** @var array<AssertTag>|false */
+	private array|false $assertTags = false;
+
+	private SelfOutTypeTag|false|null $selfOutTypeTag = false;
+
+	private DeprecatedTag|false|null $deprecatedTag = false;
+
+	private ?bool $isDeprecated = null;
+
+	private ?bool $isNotDeprecated = null;
+
+	private ?bool $isInternal = null;
+
+	private ?bool $isFinal = null;
+
+	/** @var bool|'notLoaded'|null */
+	private bool|string|null $isPure = 'notLoaded';
+
+	private ?bool $isReadOnly = null;
+
+	private ?bool $isImmutable = null;
+
+	private ?bool $isAllowedPrivateMutation = null;
+
+	private ?bool $hasConsistentConstructor = null;
+
+	private ?bool $acceptsNamedArguments = null;
+
+	private function __construct()
+	{
+	}
+
+	/**
+	 * @param TemplateTag[] $templateTags
+	 */
+	public static function create(
+		PhpDocNode $phpDocNode,
+		string $phpDocString,
+		?string $filename,
+		NameScope $nameScope,
+		TemplateTypeMap $templateTypeMap,
+		array $templateTags,
+		PhpDocNodeResolver $phpDocNodeResolver,
+		ReflectionProvider $reflectionProvider,
+	): self
+	{
+		// new property also needs to be added to withNameScope(), createEmpty() and merge()
+		$self = new self();
+		$self->phpDocNode = $phpDocNode;
+		$self->phpDocNodes = [$phpDocNode];
+		$self->phpDocString = $phpDocString;
+		$self->filename = $filename;
+		$self->nameScope = $nameScope;
+		$self->templateTypeMap = $templateTypeMap;
+		$self->templateTags = $templateTags;
+		$self->phpDocNodeResolver = $phpDocNodeResolver;
+		$self->reflectionProvider = $reflectionProvider;
+
+		return $self;
+	}
+
+	public function withNameScope(NameScope $nameScope): self
+	{
+		$self = new self();
+		$self->phpDocNode = $this->phpDocNode;
+		$self->phpDocNodes = $this->phpDocNodes;
+		$self->phpDocString = $this->phpDocString;
+		$self->filename = $this->filename;
+		$self->nameScope = $nameScope;
+		$self->templateTypeMap = $this->templateTypeMap;
+		$self->templateTags = $this->templateTags;
+		$self->phpDocNodeResolver = $this->phpDocNodeResolver;
+		$self->reflectionProvider = $this->reflectionProvider;
+
+		return $self;
+	}
+
+	public static function createEmpty(): self
+	{
+		// new property also needs to be added to merge()
+		$self = new self();
+		$self->phpDocString = self::EMPTY_DOC_STRING;
+		$self->phpDocNodes = [];
+		$self->filename = null;
+		$self->templateTypeMap = TemplateTypeMap::createEmpty();
+		$self->templateTags = [];
+		$self->varTags = [];
+		$self->methodTags = [];
+		$self->propertyTags = [];
+		$self->extendsTags = [];
+		$self->implementsTags = [];
+		$self->usesTags = [];
+		$self->paramTags = [];
+		$self->paramOutTags = [];
+		$self->paramsImmediatelyInvokedCallable = [];
+		$self->paramClosureThisTags = [];
+		$self->returnTag = null;
+		$self->throwsTag = null;
+		$self->mixinTags = [];
+		$self->requireExtendsTags = [];
+		$self->requireImplementsTags = [];
+		$self->typeAliasTags = [];
+		$self->typeAliasImportTags = [];
+		$self->assertTags = [];
+		$self->selfOutTypeTag = null;
+		$self->deprecatedTag = null;
+		$self->isDeprecated = false;
+		$self->isNotDeprecated = false;
+		$self->isInternal = false;
+		$self->isFinal = false;
+		$self->isPure = null;
+		$self->isReadOnly = false;
+		$self->isImmutable = false;
+		$self->isAllowedPrivateMutation = false;
+		$self->hasConsistentConstructor = false;
+		$self->acceptsNamedArguments = true;
+
+		return $self;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 */
+	public function merge(array $parents, array $parentPhpDocBlocks): self
+	{
+		$className = $this->nameScope !== null ? $this->nameScope->getClassName() : null;
+		$classReflection = $className !== null && $this->reflectionProvider->hasClass($className)
+			? $this->reflectionProvider->getClass($className)
+			: null;
+
+		// new property also needs to be added to createEmpty()
+		$result = new self();
+		// we will resolve everything on $this here so these properties don't have to be populated
+		// skip $result->phpDocNode
+		$phpDocNodes = $this->phpDocNodes;
+		$acceptsNamedArguments = $this->acceptsNamedArguments();
+		foreach ($parents as $parent) {
+			foreach ($parent->phpDocNodes as $phpDocNode) {
+				$phpDocNodes[] = $phpDocNode;
+				$acceptsNamedArguments = $acceptsNamedArguments && $parent->acceptsNamedArguments();
+			}
+		}
+		$result->phpDocNodes = $phpDocNodes;
+		$result->phpDocString = $this->phpDocString;
+		$result->filename = $this->filename;
+		// skip $result->nameScope
+		$result->templateTypeMap = $this->templateTypeMap;
+		$result->templateTags = $this->templateTags;
+		// skip $result->phpDocNodeResolver
+		$result->varTags = self::mergeVarTags($this->getVarTags(), $parents, $parentPhpDocBlocks);
+		$result->methodTags = $this->getMethodTags();
+		$result->propertyTags = $this->getPropertyTags();
+		$result->extendsTags = $this->getExtendsTags();
+		$result->implementsTags = $this->getImplementsTags();
+		$result->usesTags = $this->getUsesTags();
+		$result->paramTags = self::mergeParamTags($this->getParamTags(), $parents, $parentPhpDocBlocks);
+		$result->paramOutTags = self::mergeParamOutTags($this->getParamOutTags(), $parents, $parentPhpDocBlocks);
+		$result->paramsImmediatelyInvokedCallable = self::mergeParamsImmediatelyInvokedCallable($this->getParamsImmediatelyInvokedCallable(), $parents, $parentPhpDocBlocks);
+		$result->paramClosureThisTags = self::mergeParamClosureThisTags($this->getParamClosureThisTags(), $parents, $parentPhpDocBlocks);
+		$result->returnTag = self::mergeReturnTags($this->getReturnTag(), $classReflection, $parents, $parentPhpDocBlocks);
+		$result->throwsTag = self::mergeThrowsTags($this->getThrowsTag(), $parents);
+		$result->mixinTags = $this->getMixinTags();
+		$result->requireExtendsTags = $this->getRequireExtendsTags();
+		$result->requireImplementsTags = $this->getRequireImplementsTags();
+		$result->typeAliasTags = $this->getTypeAliasTags();
+		$result->typeAliasImportTags = $this->getTypeAliasImportTags();
+		$result->assertTags = self::mergeAssertTags($this->getAssertTags(), $parents, $parentPhpDocBlocks);
+		$result->selfOutTypeTag = self::mergeSelfOutTypeTags($this->getSelfOutTag(), $parents);
+		$result->deprecatedTag = self::mergeDeprecatedTags($this->getDeprecatedTag(), $this->isNotDeprecated(), $parents);
+		$result->isDeprecated = $result->deprecatedTag !== null;
+		$result->isNotDeprecated = $this->isNotDeprecated();
+		$result->isInternal = $this->isInternal();
+		$result->isFinal = $this->isFinal();
+		$result->isPure = self::mergePureTags($this->isPure(), $parents);
+		$result->isReadOnly = $this->isReadOnly();
+		$result->isImmutable = $this->isImmutable();
+		$result->isAllowedPrivateMutation = $this->isAllowedPrivateMutation();
+		$result->hasConsistentConstructor = $this->hasConsistentConstructor();
+		$result->acceptsNamedArguments = $acceptsNamedArguments;
+
+		return $result;
+	}
+
+	/**
+	 * @param array<string, string> $parameterNameMapping
+	 */
+	public function changeParameterNamesByMapping(array $parameterNameMapping): self
+	{
+		if (count($this->phpDocNodes) === 0) {
+			return $this;
+		}
+
+		$mapParameterCb = static function (Type $type, callable $traverse) use ($parameterNameMapping): Type {
+			if ($type instanceof ConditionalTypeForParameter) {
+				$parameterName = substr($type->getParameterName(), 1);
+				if (array_key_exists($parameterName, $parameterNameMapping)) {
+					$type = $type->changeParameterName('$' . $parameterNameMapping[$parameterName]);
+				}
+			}
+
+			return $traverse($type);
+		};
+
+		$newParamTags = [];
+		foreach ($this->getParamTags() as $key => $paramTag) {
+			if (!array_key_exists($key, $parameterNameMapping)) {
+				continue;
+			}
+			$transformedType = TypeTraverser::map($paramTag->getType(), $mapParameterCb);
+			$newParamTags[$parameterNameMapping[$key]] = $paramTag->withType($transformedType);
+		}
+
+		$newParamOutTags = [];
+		foreach ($this->getParamOutTags() as $key => $paramOutTag) {
+			if (!array_key_exists($key, $parameterNameMapping)) {
+				continue;
+			}
+
+			$transformedType = TypeTraverser::map($paramOutTag->getType(), $mapParameterCb);
+			$newParamOutTags[$parameterNameMapping[$key]] = $paramOutTag->withType($transformedType);
+		}
+
+		$newParamsImmediatelyInvokedCallable = [];
+		foreach ($this->getParamsImmediatelyInvokedCallable() as $key => $immediatelyInvokedCallable) {
+			if (!array_key_exists($key, $parameterNameMapping)) {
+				continue;
+			}
+
+			$newParamsImmediatelyInvokedCallable[$parameterNameMapping[$key]] = $immediatelyInvokedCallable;
+		}
+
+		$paramClosureThisTags = $this->getParamClosureThisTags();
+		$newParamClosureThisTags = [];
+		foreach ($paramClosureThisTags as $key => $paramClosureThisTag) {
+			if (!array_key_exists($key, $parameterNameMapping)) {
+				continue;
+			}
+
+			$transformedType = TypeTraverser::map($paramClosureThisTag->getType(), $mapParameterCb);
+			$newParamClosureThisTags[$parameterNameMapping[$key]] = $paramClosureThisTag->withType($transformedType);
+		}
+
+		$returnTag = $this->getReturnTag();
+		if ($returnTag !== null) {
+			$transformedType = TypeTraverser::map($returnTag->getType(), $mapParameterCb);
+			$returnTag = $returnTag->withType($transformedType);
+		}
+
+		$assertTags = $this->getAssertTags();
+		if (count($assertTags) > 0) {
+			$assertTags = array_map(static function (AssertTag $tag) use ($parameterNameMapping): AssertTag {
+				$parameterName = substr($tag->getParameter()->getParameterName(), 1);
+				if (array_key_exists($parameterName, $parameterNameMapping)) {
+					$tag = $tag->withParameter($tag->getParameter()->changeParameterName('$' . $parameterNameMapping[$parameterName]));
+				}
+				return $tag;
+			}, $assertTags);
+		}
+
+		$self = new self();
+		$self->phpDocNode = $this->phpDocNode;
+		$self->phpDocNodes = $this->phpDocNodes;
+		$self->phpDocString = $this->phpDocString;
+		$self->filename = $this->filename;
+		$self->nameScope = $this->nameScope;
+		$self->templateTypeMap = $this->templateTypeMap;
+		$self->templateTags = $this->templateTags;
+		$self->phpDocNodeResolver = $this->phpDocNodeResolver;
+		$self->reflectionProvider = $this->reflectionProvider;
+		$self->varTags = $this->varTags;
+		$self->methodTags = $this->methodTags;
+		$self->propertyTags = $this->propertyTags;
+		$self->extendsTags = $this->extendsTags;
+		$self->implementsTags = $this->implementsTags;
+		$self->usesTags = $this->usesTags;
+		$self->paramTags = $newParamTags;
+		$self->paramOutTags = $newParamOutTags;
+		$self->paramsImmediatelyInvokedCallable = $newParamsImmediatelyInvokedCallable;
+		$self->paramClosureThisTags = $newParamClosureThisTags;
+		$self->returnTag = $returnTag;
+		$self->throwsTag = $this->throwsTag;
+		$self->mixinTags = $this->mixinTags;
+		$self->requireImplementsTags = $this->requireImplementsTags;
+		$self->requireExtendsTags = $this->requireExtendsTags;
+		$self->typeAliasTags = $this->typeAliasTags;
+		$self->typeAliasImportTags = $this->typeAliasImportTags;
+		$self->assertTags = $assertTags;
+		$self->selfOutTypeTag = $this->selfOutTypeTag;
+		$self->deprecatedTag = $this->deprecatedTag;
+		$self->isDeprecated = $this->isDeprecated;
+		$self->isNotDeprecated = $this->isNotDeprecated;
+		$self->isInternal = $this->isInternal;
+		$self->isFinal = $this->isFinal;
+		$self->isPure = $this->isPure;
+
+		return $self;
+	}
+
+	public function hasPhpDocString(): bool
+	{
+		return $this->phpDocString !== self::EMPTY_DOC_STRING;
+	}
+
+	public function getPhpDocString(): string
+	{
+		return $this->phpDocString;
+	}
+
+	/**
+	 * @return PhpDocNode[]
+	 */
+	public function getPhpDocNodes(): array
+	{
+		return $this->phpDocNodes;
+	}
+
+	public function getFilename(): ?string
+	{
+		return $this->filename;
+	}
+
+	private function getNameScope(): NameScope
+	{
+		return $this->nameScope;
+	}
+
+	public function getNullableNameScope(): ?NameScope
+	{
+		return $this->nameScope;
+	}
+
+	/**
+	 * @return array<(string|int), VarTag>
+	 */
+	public function getVarTags(): array
+	{
+		if ($this->varTags === false) {
+			$this->varTags = $this->phpDocNodeResolver->resolveVarTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->varTags;
+	}
+
+	/**
+	 * @return array<string, MethodTag>
+	 */
+	public function getMethodTags(): array
+	{
+		if ($this->methodTags === false) {
+			$this->methodTags = $this->phpDocNodeResolver->resolveMethodTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->methodTags;
+	}
+
+	/**
+	 * @return array<string, PropertyTag>
+	 */
+	public function getPropertyTags(): array
+	{
+		if ($this->propertyTags === false) {
+			$this->propertyTags = $this->phpDocNodeResolver->resolvePropertyTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->propertyTags;
+	}
+
+	/**
+	 * @return array<string, TemplateTag>
+	 */
+	public function getTemplateTags(): array
+	{
+		return $this->templateTags;
+	}
+
+	/**
+	 * @return array<string, ExtendsTag>
+	 */
+	public function getExtendsTags(): array
+	{
+		if ($this->extendsTags === false) {
+			$this->extendsTags = $this->phpDocNodeResolver->resolveExtendsTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->extendsTags;
+	}
+
+	/**
+	 * @return array<string, ImplementsTag>
+	 */
+	public function getImplementsTags(): array
+	{
+		if ($this->implementsTags === false) {
+			$this->implementsTags = $this->phpDocNodeResolver->resolveImplementsTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->implementsTags;
+	}
+
+	/**
+	 * @return array<string, UsesTag>
+	 */
+	public function getUsesTags(): array
+	{
+		if ($this->usesTags === false) {
+			$this->usesTags = $this->phpDocNodeResolver->resolveUsesTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->usesTags;
+	}
+
+	/**
+	 * @return array<string, ParamTag>
+	 */
+	public function getParamTags(): array
+	{
+		if ($this->paramTags === false) {
+			$this->paramTags = $this->phpDocNodeResolver->resolveParamTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->paramTags;
+	}
+
+	/**
+	 * @return array<string, ParamOutTag>
+	 */
+	public function getParamOutTags(): array
+	{
+		if ($this->paramOutTags === false) {
+			$this->paramOutTags = $this->phpDocNodeResolver->resolveParamOutTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->paramOutTags;
+	}
+
+	/**
+	 * @return array<string, bool>
+	 */
+	public function getParamsImmediatelyInvokedCallable(): array
+	{
+		if ($this->paramsImmediatelyInvokedCallable === false) {
+			$this->paramsImmediatelyInvokedCallable = $this->phpDocNodeResolver->resolveParamImmediatelyInvokedCallable($this->phpDocNode);
+		}
+
+		return $this->paramsImmediatelyInvokedCallable;
+	}
+
+	/**
+	 * @return array<string, ParamClosureThisTag>
+	 */
+	public function getParamClosureThisTags(): array
+	{
+		if ($this->paramClosureThisTags === false) {
+			$this->paramClosureThisTags = $this->phpDocNodeResolver->resolveParamClosureThisTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->paramClosureThisTags;
+	}
+
+	public function getReturnTag(): ?ReturnTag
+	{
+		if (is_bool($this->returnTag)) {
+			$this->returnTag = $this->phpDocNodeResolver->resolveReturnTag(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->returnTag;
+	}
+
+	public function getThrowsTag(): ?ThrowsTag
+	{
+		if (is_bool($this->throwsTag)) {
+			$this->throwsTag = $this->phpDocNodeResolver->resolveThrowsTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->throwsTag;
+	}
+
+	/**
+	 * @return array<MixinTag>
+	 */
+	public function getMixinTags(): array
+	{
+		if ($this->mixinTags === false) {
+			$this->mixinTags = $this->phpDocNodeResolver->resolveMixinTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->mixinTags;
+	}
+
+	/**
+	 * @return array<RequireExtendsTag>
+	 */
+	public function getRequireExtendsTags(): array
+	{
+		if ($this->requireExtendsTags === false) {
+			$this->requireExtendsTags = $this->phpDocNodeResolver->resolveRequireExtendsTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->requireExtendsTags;
+	}
+
+	/**
+	 * @return array<RequireImplementsTag>
+	 */
+	public function getRequireImplementsTags(): array
+	{
+		if ($this->requireImplementsTags === false) {
+			$this->requireImplementsTags = $this->phpDocNodeResolver->resolveRequireImplementsTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->requireImplementsTags;
+	}
+
+	/**
+	 * @return array<TypeAliasTag>
+	 */
+	public function getTypeAliasTags(): array
+	{
+		if ($this->typeAliasTags === false) {
+			$this->typeAliasTags = $this->phpDocNodeResolver->resolveTypeAliasTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->typeAliasTags;
+	}
+
+	/**
+	 * @return array<TypeAliasImportTag>
+	 */
+	public function getTypeAliasImportTags(): array
+	{
+		if ($this->typeAliasImportTags === false) {
+			$this->typeAliasImportTags = $this->phpDocNodeResolver->resolveTypeAliasImportTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->typeAliasImportTags;
+	}
+
+	/**
+	 * @return array<AssertTag>
+	 */
+	public function getAssertTags(): array
+	{
+		if ($this->assertTags === false) {
+			$this->assertTags = $this->phpDocNodeResolver->resolveAssertTags(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->assertTags;
+	}
+
+	public function getSelfOutTag(): ?SelfOutTypeTag
+	{
+		if ($this->selfOutTypeTag === false) {
+			$this->selfOutTypeTag = $this->phpDocNodeResolver->resolveSelfOutTypeTag(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+
+		return $this->selfOutTypeTag;
+	}
+
+	public function getDeprecatedTag(): ?DeprecatedTag
+	{
+		if (is_bool($this->deprecatedTag)) {
+			$this->deprecatedTag = $this->phpDocNodeResolver->resolveDeprecatedTag(
+				$this->phpDocNode,
+				$this->getNameScope(),
+			);
+		}
+		return $this->deprecatedTag;
+	}
+
+	public function isDeprecated(): bool
+	{
+		if ($this->isDeprecated === null) {
+			$this->isDeprecated = $this->phpDocNodeResolver->resolveIsDeprecated(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isDeprecated;
+	}
+
+	/**
+	 * @internal
+	 */
+	public function isNotDeprecated(): bool
+	{
+		if ($this->isNotDeprecated === null) {
+			$this->isNotDeprecated = $this->phpDocNodeResolver->resolveIsNotDeprecated(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isNotDeprecated;
+	}
+
+	public function isInternal(): bool
+	{
+		if ($this->isInternal === null) {
+			$this->isInternal = $this->phpDocNodeResolver->resolveIsInternal(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isInternal;
+	}
+
+	public function isFinal(): bool
+	{
+		if ($this->isFinal === null) {
+			$this->isFinal = $this->phpDocNodeResolver->resolveIsFinal(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isFinal;
+	}
+
+	public function hasConsistentConstructor(): bool
+	{
+		if ($this->hasConsistentConstructor === null) {
+			$this->hasConsistentConstructor = $this->phpDocNodeResolver->resolveHasConsistentConstructor(
+				$this->phpDocNode,
+			);
+		}
+		return $this->hasConsistentConstructor;
+	}
+
+	public function acceptsNamedArguments(): bool
+	{
+		if ($this->acceptsNamedArguments === null) {
+			$this->acceptsNamedArguments = $this->phpDocNodeResolver->resolveAcceptsNamedArguments(
+				$this->phpDocNode,
+			);
+		}
+		return $this->acceptsNamedArguments;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function isPure(): ?bool
+	{
+		if ($this->isPure === 'notLoaded') {
+			$pure = $this->phpDocNodeResolver->resolveIsPure(
+				$this->phpDocNode,
+			);
+			if ($pure) {
+				$this->isPure = true;
+				return $this->isPure;
+			}
+
+			$impure = $this->phpDocNodeResolver->resolveIsImpure(
+				$this->phpDocNode,
+			);
+			if ($impure) {
+				$this->isPure = false;
+				return $this->isPure;
+			}
+
+			$this->isPure = null;
+		}
+
+		return $this->isPure;
+	}
+
+	public function isReadOnly(): bool
+	{
+		if ($this->isReadOnly === null) {
+			$this->isReadOnly = $this->phpDocNodeResolver->resolveIsReadOnly(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isReadOnly;
+	}
+
+	public function isImmutable(): bool
+	{
+		if ($this->isImmutable === null) {
+			$this->isImmutable = $this->phpDocNodeResolver->resolveIsImmutable(
+				$this->phpDocNode,
+			);
+		}
+		return $this->isImmutable;
+	}
+
+	public function isAllowedPrivateMutation(): bool
+	{
+		if ($this->isAllowedPrivateMutation === null) {
+			$this->isAllowedPrivateMutation = $this->phpDocNodeResolver->resolveAllowPrivateMutation(
+				$this->phpDocNode,
+			);
+		}
+
+		return $this->isAllowedPrivateMutation;
+	}
+
+	/**
+	 * @param array<string|int, VarTag> $varTags
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<string|int, VarTag>
+	 */
+	private static function mergeVarTags(array $varTags, array $parents, array $parentPhpDocBlocks): array
+	{
+		// Only allow one var tag per comment. Check the parent if child does not have this tag.
+		if (count($varTags) > 0) {
+			return $varTags;
+		}
+
+		foreach ($parents as $i => $parent) {
+			$result = self::mergeOneParentVarTags($parent, $parentPhpDocBlocks[$i]);
+			if ($result === null) {
+				continue;
+			}
+
+			return $result;
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return array<string|int, VarTag>|null
+	 */
+	private static function mergeOneParentVarTags(self $parent, PhpDocBlock $phpDocBlock): ?array
+	{
+		foreach ($parent->getVarTags() as $key => $parentVarTag) {
+			return [$key => self::resolveTemplateTypeInTag($parentVarTag, $phpDocBlock, TemplateTypeVariance::createInvariant())];
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<string, ParamTag> $paramTags
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<string, ParamTag>
+	 */
+	private static function mergeParamTags(array $paramTags, array $parents, array $parentPhpDocBlocks): array
+	{
+		foreach ($parents as $i => $parent) {
+			$paramTags = self::mergeOneParentParamTags($paramTags, $parent, $parentPhpDocBlocks[$i]);
+		}
+
+		return $paramTags;
+	}
+
+	/**
+	 * @param array<string, ParamTag> $paramTags
+	 * @return array<string, ParamTag>
+	 */
+	private static function mergeOneParentParamTags(array $paramTags, self $parent, PhpDocBlock $phpDocBlock): array
+	{
+		$parentParamTags = $phpDocBlock->transformArrayKeysWithParameterNameMapping($parent->getParamTags());
+
+		foreach ($parentParamTags as $name => $parentParamTag) {
+			if (array_key_exists($name, $paramTags)) {
+				continue;
+			}
+
+			$paramTags[$name] = self::resolveTemplateTypeInTag(
+				$parentParamTag->withType($phpDocBlock->transformConditionalReturnTypeWithParameterNameMapping($parentParamTag->getType())),
+				$phpDocBlock,
+				TemplateTypeVariance::createContravariant(),
+			);
+		}
+
+		return $paramTags;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return ReturnTag|Null
+	 */
+	private static function mergeReturnTags(?ReturnTag $returnTag, ?ClassReflection $classReflection, array $parents, array $parentPhpDocBlocks): ?ReturnTag
+	{
+		if ($returnTag !== null) {
+			return $returnTag;
+		}
+
+		foreach ($parents as $i => $parent) {
+			$result = self::mergeOneParentReturnTag($returnTag, $classReflection, $parent, $parentPhpDocBlocks[$i]);
+			if ($result === null) {
+				continue;
+			}
+
+			return $result;
+		}
+
+		return null;
+	}
+
+	private static function mergeOneParentReturnTag(?ReturnTag $returnTag, ?ClassReflection $classReflection, self $parent, PhpDocBlock $phpDocBlock): ?ReturnTag
+	{
+		$parentReturnTag = $parent->getReturnTag();
+		if ($parentReturnTag === null) {
+			return $returnTag;
+		}
+
+		$parentType = $parentReturnTag->getType();
+
+		if ($classReflection !== null) {
+			$parentType = TypeTraverser::map(
+				$parentType,
+				static function (Type $type, callable $traverse) use ($classReflection): Type {
+					if ($type instanceof StaticType) {
+						return $type->changeBaseClass($classReflection);
+					}
+
+					return $traverse($type);
+				},
+			);
+
+			$parentReturnTag = $parentReturnTag->withType($parentType);
+		}
+
+		// Each parent would overwrite the previous one except if it returns a less specific type.
+		// Do not care for incompatible types as there is a separate rule for that.
+		if ($returnTag !== null && $parentType->isSuperTypeOf($returnTag->getType())->yes()) {
+			return null;
+		}
+
+		return self::resolveTemplateTypeInTag(
+			$parentReturnTag->withType(
+				$phpDocBlock->transformConditionalReturnTypeWithParameterNameMapping($parentReturnTag->getType()),
+			)->toImplicit(),
+			$phpDocBlock,
+			TemplateTypeVariance::createCovariant(),
+		);
+	}
+
+	/**
+	 * @param array<AssertTag> $assertTags
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<AssertTag>
+	 */
+	private static function mergeAssertTags(array $assertTags, array $parents, array $parentPhpDocBlocks): array
+	{
+		if (count($assertTags) > 0) {
+			return $assertTags;
+		}
+		foreach ($parents as $i => $parent) {
+			$result = $parent->getAssertTags();
+			if (count($result) === 0) {
+				continue;
+			}
+
+			$phpDocBlock = $parentPhpDocBlocks[$i];
+
+			return array_map(
+				static fn (AssertTag $assertTag) => self::resolveTemplateTypeInTag(
+					$assertTag->withParameter(
+						$phpDocBlock->transformAssertTagParameterWithParameterNameMapping($assertTag->getParameter()),
+					)->toImplicit(),
+					$phpDocBlock,
+					TemplateTypeVariance::createCovariant(),
+				),
+				$result,
+			);
+		}
+
+		return $assertTags;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 */
+	private static function mergeSelfOutTypeTags(?SelfOutTypeTag $selfOutTypeTag, array $parents): ?SelfOutTypeTag
+	{
+		if ($selfOutTypeTag !== null) {
+			return $selfOutTypeTag;
+		}
+		foreach ($parents as $parent) {
+			$result = $parent->getSelfOutTag();
+			if ($result === null) {
+				continue;
+			}
+			return $result;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 */
+	private static function mergeDeprecatedTags(?DeprecatedTag $deprecatedTag, bool $hasNotDeprecatedTag, array $parents): ?DeprecatedTag
+	{
+		if ($deprecatedTag !== null) {
+			return $deprecatedTag;
+		}
+
+		if ($hasNotDeprecatedTag) {
+			return null;
+		}
+
+		foreach ($parents as $parent) {
+			$result = $parent->getDeprecatedTag();
+			if ($result === null && !$parent->isNotDeprecated()) {
+				continue;
+			}
+			return $result;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 */
+	private static function mergeThrowsTags(?ThrowsTag $throwsTag, array $parents): ?ThrowsTag
+	{
+		if ($throwsTag !== null) {
+			return $throwsTag;
+		}
+		foreach ($parents as $parent) {
+			$result = $parent->getThrowsTag();
+			if ($result === null) {
+				continue;
+			}
+
+			return $result;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<string, ParamOutTag> $paramOutTags
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<string, ParamOutTag>
+	 */
+	private static function mergeParamOutTags(array $paramOutTags, array $parents, array $parentPhpDocBlocks): array
+	{
+		foreach ($parents as $i => $parent) {
+			$paramOutTags = self::mergeOneParentParamOutTags($paramOutTags, $parent, $parentPhpDocBlocks[$i]);
+		}
+
+		return $paramOutTags;
+	}
+
+	/**
+	 * @param array<string, ParamOutTag> $paramOutTags
+	 * @return array<string, ParamOutTag>
+	 */
+	private static function mergeOneParentParamOutTags(array $paramOutTags, self $parent, PhpDocBlock $phpDocBlock): array
+	{
+		$parentParamOutTags = $phpDocBlock->transformArrayKeysWithParameterNameMapping($parent->getParamOutTags());
+
+		foreach ($parentParamOutTags as $name => $parentParamTag) {
+			if (array_key_exists($name, $paramOutTags)) {
+				continue;
+			}
+
+			$paramOutTags[$name] = self::resolveTemplateTypeInTag(
+				$parentParamTag->withType($phpDocBlock->transformConditionalReturnTypeWithParameterNameMapping($parentParamTag->getType())),
+				$phpDocBlock,
+				TemplateTypeVariance::createCovariant(),
+			);
+		}
+
+		return $paramOutTags;
+	}
+
+	/**
+	 * @param array<string, bool> $paramsImmediatelyInvokedCallable
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<string, bool>
+	 */
+	private static function mergeParamsImmediatelyInvokedCallable(array $paramsImmediatelyInvokedCallable, array $parents, array $parentPhpDocBlocks): array
+	{
+		foreach ($parents as $i => $parent) {
+			$paramsImmediatelyInvokedCallable = self::mergeOneParentParamImmediatelyInvokedCallable($paramsImmediatelyInvokedCallable, $parent, $parentPhpDocBlocks[$i]);
+		}
+
+		return $paramsImmediatelyInvokedCallable;
+	}
+
+	/**
+	 * @param array<string, bool> $paramsImmediatelyInvokedCallable
+	 * @return array<string, bool>
+	 */
+	private static function mergeOneParentParamImmediatelyInvokedCallable(array $paramsImmediatelyInvokedCallable, self $parent, PhpDocBlock $phpDocBlock): array
+	{
+		$parentImmediatelyInvokedCallable = $phpDocBlock->transformArrayKeysWithParameterNameMapping($parent->getParamsImmediatelyInvokedCallable());
+
+		foreach ($parentImmediatelyInvokedCallable as $name => $parentIsImmediatelyInvokedCallable) {
+			if (array_key_exists($name, $paramsImmediatelyInvokedCallable)) {
+				continue;
+			}
+
+			$paramsImmediatelyInvokedCallable[$name] = $parentIsImmediatelyInvokedCallable;
+		}
+
+		return $paramsImmediatelyInvokedCallable;
+	}
+
+	/**
+	 * @param array<string, ParamClosureThisTag> $paramsClosureThisTags
+	 * @param array<int, self> $parents
+	 * @param array<int, PhpDocBlock> $parentPhpDocBlocks
+	 * @return array<string, ParamClosureThisTag>
+	 */
+	private static function mergeParamClosureThisTags(array $paramsClosureThisTags, array $parents, array $parentPhpDocBlocks): array
+	{
+		foreach ($parents as $i => $parent) {
+			$paramsClosureThisTags = self::mergeOneParentParamClosureThisTag($paramsClosureThisTags, $parent, $parentPhpDocBlocks[$i]);
+		}
+
+		return $paramsClosureThisTags;
+	}
+
+	/**
+	 * @param array<string, ParamClosureThisTag> $paramsClosureThisTags
+	 * @return array<string, ParamClosureThisTag>
+	 */
+	private static function mergeOneParentParamClosureThisTag(array $paramsClosureThisTags, self $parent, PhpDocBlock $phpDocBlock): array
+	{
+		$parentClosureThisTags = $phpDocBlock->transformArrayKeysWithParameterNameMapping($parent->getParamClosureThisTags());
+
+		foreach ($parentClosureThisTags as $name => $parentParamClosureThisTag) {
+			if (array_key_exists($name, $paramsClosureThisTags)) {
+				continue;
+			}
+
+			$paramsClosureThisTags[$name] = self::resolveTemplateTypeInTag(
+				$parentParamClosureThisTag->withType(
+					$phpDocBlock->transformConditionalReturnTypeWithParameterNameMapping($parentParamClosureThisTag->getType()),
+				),
+				$phpDocBlock,
+				TemplateTypeVariance::createContravariant(),
+			);
+		}
+
+		return $paramsClosureThisTags;
+	}
+
+	/**
+	 * @param array<int, self> $parents
+	 */
+	private static function mergePureTags(?bool $isPure, array $parents): ?bool
+	{
+		if ($isPure !== null) {
+			return $isPure;
+		}
+
+		foreach ($parents as $parent) {
+			$parentIsPure = $parent->isPure();
+			if ($parentIsPure === null) {
+				continue;
+			}
+
+			return $parentIsPure;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @template T of TypedTag
+	 * @param T $tag
+	 * @return T
+	 */
+	private static function resolveTemplateTypeInTag(
+		TypedTag $tag,
+		PhpDocBlock $phpDocBlock,
+		TemplateTypeVariance $positionVariance,
+	): TypedTag
+	{
+		$type = TemplateTypeHelper::resolveTemplateTypes(
+			$tag->getType(),
+			$phpDocBlock->getClassReflection()->getActiveTemplateTypeMap(),
+			$phpDocBlock->getClassReflection()->getCallSiteVarianceMap(),
+			$positionVariance,
+		);
+		return $tag->withType($type);
+	}
+
+}
diff --git a/src/PhpDoc/SocketSelectStubFilesExtension.php b/src/PhpDoc/SocketSelectStubFilesExtension.php
new file mode 100644
index 00000000..e23e4322
--- /dev/null
+++ b/src/PhpDoc/SocketSelectStubFilesExtension.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Php\PhpVersion;
+
+final class SocketSelectStubFilesExtension implements StubFilesExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getFiles(): array
+	{
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			return [__DIR__ . '/../../stubs/socket_select_php8.stub'];
+		}
+
+		return [__DIR__ . '/../../stubs/socket_select.stub'];
+	}
+
+}
diff --git a/src/PhpDoc/StubFilesExtension.php b/src/PhpDoc/StubFilesExtension.php
new file mode 100644
index 00000000..aacf908a
--- /dev/null
+++ b/src/PhpDoc/StubFilesExtension.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+/**
+ * This is the extension interface to implement if you want to dynamically
+ * load stub files based on your logic. As opposed to simply list them in the configuration file.
+ *
+ * To register it in the configuration file use the `phpstan.stubFilesExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.stubFilesExtension
+ * ```
+ *
+ * @api
+ */
+interface StubFilesExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.stubFilesExtension';
+
+	/** @return string[] */
+	public function getFiles(): array;
+
+}
diff --git a/src/PhpDoc/StubFilesProvider.php b/src/PhpDoc/StubFilesProvider.php
new file mode 100644
index 00000000..96a7b0ee
--- /dev/null
+++ b/src/PhpDoc/StubFilesProvider.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+interface StubFilesProvider
+{
+
+	/** @return string[] */
+	public function getStubFiles(): array;
+
+	/** @return string[] */
+	public function getProjectStubFiles(): array;
+
+}
diff --git a/src/PhpDoc/StubPhpDocProvider.php b/src/PhpDoc/StubPhpDocProvider.php
new file mode 100644
index 00000000..baca9ccc
--- /dev/null
+++ b/src/PhpDoc/StubPhpDocProvider.php
@@ -0,0 +1,379 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\Interface_;
+use PhpParser\Node\Stmt\Trait_;
+use PHPStan\Parser\Parser;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use function array_key_exists;
+use function array_map;
+use function is_string;
+
+final class StubPhpDocProvider
+{
+
+	/** @var array<string, ResolvedPhpDocBlock|null> */
+	private array $classMap = [];
+
+	/** @var array<string, array<string, ResolvedPhpDocBlock|null>> */
+	private array $propertyMap = [];
+
+	/** @var array<string, array<string, ResolvedPhpDocBlock|null>> */
+	private array $constantMap = [];
+
+	/** @var array<string, array<string, null>> */
+	private array $methodMap = [];
+
+	/** @var array<string, ResolvedPhpDocBlock|null> */
+	private array $functionMap = [];
+
+	private bool $initialized = false;
+
+	private bool $initializing = false;
+
+	/** @var array<string, array{string, string}> */
+	private array $knownClassesDocComments = [];
+
+	/** @var array<string, array{string, string}> */
+	private array $knownFunctionsDocComments = [];
+
+	/** @var array<string, array<string, array{string, string}>> */
+	private array $knownPropertiesDocComments = [];
+
+	/** @var array<string, array<string, array{string, string}>> */
+	private array $knownConstantsDocComments = [];
+
+	/** @var array<string, array<string, array{string, string}>> */
+	private array $knownMethodsDocComments = [];
+
+	/** @var array<string, array<string, array<string>>> */
+	private array $knownMethodsParameterNames = [];
+
+	/** @var array<string, array<string>> */
+	private array $knownFunctionParameterNames = [];
+
+	public function __construct(
+		private Parser $parser,
+		private FileTypeMapper $fileTypeMapper,
+		private StubFilesProvider $stubFilesProvider,
+	)
+	{
+	}
+
+	public function findClassPhpDoc(string $className): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isKnownClass($className)) {
+			return null;
+		}
+
+		if (array_key_exists($className, $this->classMap)) {
+			return $this->classMap[$className];
+		}
+
+		if (array_key_exists($className, $this->knownClassesDocComments)) {
+			[$file, $docComment] = $this->knownClassesDocComments[$className];
+			$this->classMap[$className] = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				$className,
+				null,
+				null,
+				$docComment,
+			);
+
+			return $this->classMap[$className];
+		}
+
+		return null;
+	}
+
+	public function findPropertyPhpDoc(string $className, string $propertyName): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isKnownClass($className)) {
+			return null;
+		}
+
+		if (array_key_exists($propertyName, $this->propertyMap[$className])) {
+			return $this->propertyMap[$className][$propertyName];
+		}
+
+		if (array_key_exists($propertyName, $this->knownPropertiesDocComments[$className])) {
+			[$file, $docComment] = $this->knownPropertiesDocComments[$className][$propertyName];
+			$this->propertyMap[$className][$propertyName] = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				$className,
+				null,
+				null,
+				$docComment,
+			);
+
+			return $this->propertyMap[$className][$propertyName];
+		}
+
+		return null;
+	}
+
+	public function findClassConstantPhpDoc(string $className, string $constantName): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isKnownClass($className)) {
+			return null;
+		}
+
+		if (array_key_exists($constantName, $this->constantMap[$className])) {
+			return $this->constantMap[$className][$constantName];
+		}
+
+		if (array_key_exists($constantName, $this->knownConstantsDocComments[$className])) {
+			[$file, $docComment] = $this->knownConstantsDocComments[$className][$constantName];
+			$this->constantMap[$className][$constantName] = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				$className,
+				null,
+				null,
+				$docComment,
+			);
+
+			return $this->constantMap[$className][$constantName];
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, string> $positionalParameterNames
+	 */
+	public function findMethodPhpDoc(
+		string $className,
+		string $implementingClassName,
+		string $methodName,
+		array $positionalParameterNames,
+	): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isKnownClass($className)) {
+			return null;
+		}
+
+		if (array_key_exists($methodName, $this->methodMap[$className])) {
+			return $this->methodMap[$className][$methodName];
+		}
+
+		if (array_key_exists($methodName, $this->knownMethodsDocComments[$className])) {
+			[$file, $docComment] = $this->knownMethodsDocComments[$className][$methodName];
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				$className,
+				null,
+				$methodName,
+				$docComment,
+			);
+
+			if (!isset($this->knownMethodsParameterNames[$className][$methodName])) {
+				throw new ShouldNotHappenException();
+			}
+
+			if ($className !== $implementingClassName && $resolvedPhpDoc->getNullableNameScope() !== null) {
+				$resolvedPhpDoc = $resolvedPhpDoc->withNameScope(
+					$resolvedPhpDoc->getNullableNameScope()->withClassName($implementingClassName),
+				);
+			}
+
+			$methodParameterNames = $this->knownMethodsParameterNames[$className][$methodName];
+			$parameterNameMapping = [];
+			foreach ($positionalParameterNames as $i => $parameterName) {
+				if (!array_key_exists($i, $methodParameterNames)) {
+					continue;
+				}
+				$parameterNameMapping[$methodParameterNames[$i]] = $parameterName;
+			}
+
+			return $resolvedPhpDoc->changeParameterNamesByMapping($parameterNameMapping);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, string> $positionalParameterNames
+	 * @throws ShouldNotHappenException
+	 */
+	public function findFunctionPhpDoc(string $functionName, array $positionalParameterNames): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isKnownFunction($functionName)) {
+			return null;
+		}
+
+		if (array_key_exists($functionName, $this->functionMap)) {
+			return $this->functionMap[$functionName];
+		}
+
+		if (array_key_exists($functionName, $this->knownFunctionsDocComments)) {
+			[$file, $docComment] = $this->knownFunctionsDocComments[$functionName];
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$file,
+				null,
+				null,
+				$functionName,
+				$docComment,
+			);
+
+			if (!isset($this->knownFunctionParameterNames[$functionName])) {
+				throw new ShouldNotHappenException();
+			}
+
+			$functionParameterNames = $this->knownFunctionParameterNames[$functionName];
+			$parameterNameMapping = [];
+			foreach ($positionalParameterNames as $i => $parameterName) {
+				if (!array_key_exists($i, $functionParameterNames)) {
+					continue;
+				}
+				$parameterNameMapping[$functionParameterNames[$i]] = $parameterName;
+			}
+
+			$this->functionMap[$functionName] = $resolvedPhpDoc->changeParameterNamesByMapping($parameterNameMapping);
+
+			return $this->functionMap[$functionName];
+		}
+
+		return null;
+	}
+
+	public function isKnownClass(string $className): bool
+	{
+		$this->initializeKnownElements();
+
+		if (array_key_exists($className, $this->classMap)) {
+			return true;
+		}
+
+		return array_key_exists($className, $this->knownClassesDocComments);
+	}
+
+	private function isKnownFunction(string $functionName): bool
+	{
+		$this->initializeKnownElements();
+
+		if (array_key_exists($functionName, $this->functionMap)) {
+			return true;
+		}
+
+		return array_key_exists($functionName, $this->knownFunctionsDocComments);
+	}
+
+	private function initializeKnownElements(): void
+	{
+		if ($this->initializing) {
+			throw new ShouldNotHappenException();
+		}
+		if ($this->initialized) {
+			return;
+		}
+
+		$this->initializing = true;
+
+		try {
+			foreach ($this->stubFilesProvider->getStubFiles() as $stubFile) {
+				$nodes = $this->parser->parseFile($stubFile);
+				foreach ($nodes as $node) {
+					$this->initializeKnownElementNode($stubFile, $node);
+				}
+			}
+		} finally {
+			$this->initializing = false;
+			$this->initialized = true;
+		}
+	}
+
+	private function initializeKnownElementNode(string $stubFile, Node $node): void
+	{
+		if ($node instanceof Node\Stmt\Namespace_) {
+			foreach ($node->stmts as $stmt) {
+				$this->initializeKnownElementNode($stubFile, $stmt);
+			}
+			return;
+		}
+
+		if ($node instanceof Node\Stmt\Function_) {
+			$functionName = (string) $node->namespacedName;
+			$docComment = $node->getDocComment();
+			if ($docComment === null) {
+				$this->functionMap[$functionName] = null;
+				return;
+			}
+			$this->knownFunctionParameterNames[$functionName] = array_map(static function (Node\Param $param): string {
+				if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $param->var->name;
+			}, $node->getParams());
+
+			$this->knownFunctionsDocComments[$functionName] = [$stubFile, $docComment->getText()];
+			return;
+		}
+
+		if (!$node instanceof Class_ && !$node instanceof Interface_ && !$node instanceof Trait_ && !$node instanceof Node\Stmt\Enum_) {
+			return;
+		}
+
+		if (!isset($node->namespacedName)) {
+			return;
+		}
+
+		$className = (string) $node->namespacedName;
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			$this->classMap[$className] = null;
+		} else {
+			$this->knownClassesDocComments[$className] = [$stubFile, $docComment->getText()];
+		}
+
+		$this->methodMap[$className] = [];
+		$this->propertyMap[$className] = [];
+		$this->constantMap[$className] = [];
+		$this->knownPropertiesDocComments[$className] = [];
+		$this->knownConstantsDocComments[$className] = [];
+		$this->knownMethodsDocComments[$className] = [];
+
+		foreach ($node->stmts as $stmt) {
+			$docComment = $stmt->getDocComment();
+			if ($stmt instanceof Node\Stmt\Property) {
+				foreach ($stmt->props as $property) {
+					if ($docComment === null) {
+						$this->propertyMap[$className][$property->name->toString()] = null;
+						continue;
+					}
+					$this->knownPropertiesDocComments[$className][$property->name->toString()] = [$stubFile, $docComment->getText()];
+				}
+			} elseif ($stmt instanceof Node\Stmt\ClassConst) {
+				foreach ($stmt->consts as $const) {
+					if ($docComment === null) {
+						$this->constantMap[$className][$const->name->toString()] = null;
+						continue;
+					}
+					$this->knownConstantsDocComments[$className][$const->name->toString()] = [$stubFile, $docComment->getText()];
+				}
+			} elseif ($stmt instanceof Node\Stmt\ClassMethod) {
+				if ($docComment === null) {
+					$this->methodMap[$className][$stmt->name->toString()] = null;
+					continue;
+				}
+
+				$methodName = $stmt->name->toString();
+				$this->knownMethodsDocComments[$className][$methodName] = [$stubFile, $docComment->getText()];
+				$this->knownMethodsParameterNames[$className][$methodName] = array_map(static function (Node\Param $param): string {
+					if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+						throw new ShouldNotHappenException();
+					}
+
+					return $param->var->name;
+				}, $stmt->getParams());
+			}
+		}
+	}
+
+}
diff --git a/src/PhpDoc/StubSourceLocatorFactory.php b/src/PhpDoc/StubSourceLocatorFactory.php
new file mode 100644
index 00000000..2dc2005d
--- /dev/null
+++ b/src/PhpDoc/StubSourceLocatorFactory.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PhpParser\Parser;
+use PHPStan\BetterReflection\SourceLocator\Ast\Locator;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\AggregateSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\Psr4Mapping;
+use PHPStan\BetterReflection\SourceLocator\Type\MemoizingSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\PhpInternalSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\OptimizedPsrAutoloaderLocatorFactory;
+use PHPStan\Reflection\BetterReflection\SourceLocator\OptimizedSingleFileSourceLocatorRepository;
+use function dirname;
+
+final class StubSourceLocatorFactory
+{
+
+	public function __construct(
+		private Parser $php8Parser,
+		private PhpStormStubsSourceStubber $phpStormStubsSourceStubber,
+		private OptimizedSingleFileSourceLocatorRepository $optimizedSingleFileSourceLocatorRepository,
+		private OptimizedPsrAutoloaderLocatorFactory $optimizedPsrAutoloaderLocatorFactory,
+		private StubFilesProvider $stubFilesProvider,
+	)
+	{
+	}
+
+	public function create(): SourceLocator
+	{
+		$locators = [];
+		$astPhp8Locator = new Locator($this->php8Parser);
+		foreach ($this->stubFilesProvider->getStubFiles() as $stubFile) {
+			$locators[] = $this->optimizedSingleFileSourceLocatorRepository->getOrCreate($stubFile);
+		}
+
+		$locators[] = $this->optimizedPsrAutoloaderLocatorFactory->create(
+			Psr4Mapping::fromArrayMappings([
+				'PHPStan\\' => [dirname(__DIR__) . '/'],
+			]),
+		);
+		$locators[] = $this->optimizedPsrAutoloaderLocatorFactory->create(
+			Psr4Mapping::fromArrayMappings([
+				'PhpParser\\' => [dirname(__DIR__, 2) . '/vendor/nikic/php-parser/lib/PhpParser/'],
+			]),
+		);
+
+		$locators[] = new PhpInternalSourceLocator($astPhp8Locator, $this->phpStormStubsSourceStubber);
+
+		return new MemoizingSourceLocator(new AggregateSourceLocator($locators));
+	}
+
+}
diff --git a/src/PhpDoc/StubValidator.php b/src/PhpDoc/StubValidator.php
new file mode 100644
index 00000000..4b8114c1
--- /dev/null
+++ b/src/PhpDoc/StubValidator.php
@@ -0,0 +1,293 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\FileAnalyser;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Collectors\Registry as CollectorRegistry;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\DerivativeContainerFactory;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\PhpDocParser;
+use PHPStan\Reflection\Php\PhpClassReflectionExtension;
+use PHPStan\Reflection\PhpVersionStaticAccessor;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Rules\Classes\DuplicateClassDeclarationRule;
+use PHPStan\Rules\Classes\DuplicateDeclarationRule;
+use PHPStan\Rules\Classes\ExistingClassesInClassImplementsRule;
+use PHPStan\Rules\Classes\ExistingClassesInInterfaceExtendsRule;
+use PHPStan\Rules\Classes\ExistingClassInClassExtendsRule;
+use PHPStan\Rules\Classes\ExistingClassInTraitUseRule;
+use PHPStan\Rules\Classes\LocalTypeAliasesCheck;
+use PHPStan\Rules\Classes\LocalTypeAliasesRule;
+use PHPStan\Rules\Classes\LocalTypeTraitAliasesRule;
+use PHPStan\Rules\Classes\LocalTypeTraitUseAliasesRule;
+use PHPStan\Rules\Classes\MethodTagCheck;
+use PHPStan\Rules\Classes\MethodTagRule;
+use PHPStan\Rules\Classes\MethodTagTraitRule;
+use PHPStan\Rules\Classes\MethodTagTraitUseRule;
+use PHPStan\Rules\Classes\MixinCheck;
+use PHPStan\Rules\Classes\MixinRule;
+use PHPStan\Rules\Classes\MixinTraitRule;
+use PHPStan\Rules\Classes\MixinTraitUseRule;
+use PHPStan\Rules\Classes\PropertyTagCheck;
+use PHPStan\Rules\Classes\PropertyTagRule;
+use PHPStan\Rules\Classes\PropertyTagTraitRule;
+use PHPStan\Rules\Classes\PropertyTagTraitUseRule;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\DirectRegistry as DirectRuleRegistry;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Functions\DuplicateFunctionDeclarationRule;
+use PHPStan\Rules\Functions\MissingFunctionParameterTypehintRule;
+use PHPStan\Rules\Functions\MissingFunctionReturnTypehintRule;
+use PHPStan\Rules\Generics\ClassAncestorsRule;
+use PHPStan\Rules\Generics\ClassTemplateTypeRule;
+use PHPStan\Rules\Generics\CrossCheckInterfacesHelper;
+use PHPStan\Rules\Generics\EnumAncestorsRule;
+use PHPStan\Rules\Generics\EnumTemplateTypeRule;
+use PHPStan\Rules\Generics\FunctionSignatureVarianceRule;
+use PHPStan\Rules\Generics\FunctionTemplateTypeRule;
+use PHPStan\Rules\Generics\GenericAncestorsCheck;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\Generics\InterfaceAncestorsRule;
+use PHPStan\Rules\Generics\InterfaceTemplateTypeRule;
+use PHPStan\Rules\Generics\MethodSignatureVarianceRule;
+use PHPStan\Rules\Generics\MethodTagTemplateTypeCheck;
+use PHPStan\Rules\Generics\MethodTagTemplateTypeRule;
+use PHPStan\Rules\Generics\MethodTagTemplateTypeTraitRule;
+use PHPStan\Rules\Generics\MethodTemplateTypeRule;
+use PHPStan\Rules\Generics\PropertyVarianceRule;
+use PHPStan\Rules\Generics\TemplateTypeCheck;
+use PHPStan\Rules\Generics\TraitTemplateTypeRule;
+use PHPStan\Rules\Generics\UsedTraitsRule;
+use PHPStan\Rules\Generics\VarianceCheck;
+use PHPStan\Rules\Methods\ExistingClassesInTypehintsRule;
+use PHPStan\Rules\Methods\MethodParameterComparisonHelper;
+use PHPStan\Rules\Methods\MethodSignatureRule;
+use PHPStan\Rules\Methods\MethodVisibilityComparisonHelper;
+use PHPStan\Rules\Methods\MissingMethodParameterTypehintRule;
+use PHPStan\Rules\Methods\MissingMethodReturnTypehintRule;
+use PHPStan\Rules\Methods\MissingMethodSelfOutTypeRule;
+use PHPStan\Rules\Methods\OverridingMethodRule;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\PhpDoc\AssertRuleHelper;
+use PHPStan\Rules\PhpDoc\ConditionalReturnTypeRuleHelper;
+use PHPStan\Rules\PhpDoc\FunctionAssertRule;
+use PHPStan\Rules\PhpDoc\FunctionConditionalReturnTypeRule;
+use PHPStan\Rules\PhpDoc\GenericCallableRuleHelper;
+use PHPStan\Rules\PhpDoc\IncompatibleClassConstantPhpDocTypeRule;
+use PHPStan\Rules\PhpDoc\IncompatibleParamImmediatelyInvokedCallableRule;
+use PHPStan\Rules\PhpDoc\IncompatiblePhpDocTypeCheck;
+use PHPStan\Rules\PhpDoc\IncompatiblePhpDocTypeRule;
+use PHPStan\Rules\PhpDoc\IncompatiblePropertyPhpDocTypeRule;
+use PHPStan\Rules\PhpDoc\IncompatibleSelfOutTypeRule;
+use PHPStan\Rules\PhpDoc\InvalidPhpDocTagValueRule;
+use PHPStan\Rules\PhpDoc\InvalidPHPStanDocTagRule;
+use PHPStan\Rules\PhpDoc\InvalidThrowsPhpDocValueRule;
+use PHPStan\Rules\PhpDoc\MethodAssertRule;
+use PHPStan\Rules\PhpDoc\MethodConditionalReturnTypeRule;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\Properties\ExistingClassesInPropertiesRule;
+use PHPStan\Rules\Properties\MissingPropertyTypehintRule;
+use PHPStan\Rules\Registry as RuleRegistry;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\ObjectType;
+use Throwable;
+use function array_fill_keys;
+use function count;
+use function sprintf;
+
+final class StubValidator
+{
+
+	public function __construct(
+		private DerivativeContainerFactory $derivativeContainerFactory,
+	)
+	{
+	}
+
+	/**
+	 * @param string[] $stubFiles
+	 * @return list<Error>
+	 */
+	public function validate(array $stubFiles, bool $debug): array
+	{
+		if (count($stubFiles) === 0) {
+			return [];
+		}
+
+		$originalReflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		$originalPhpVersion = PhpVersionStaticAccessor::getInstance();
+		$container = $this->derivativeContainerFactory->create([
+			__DIR__ . '/../../conf/config.stubValidator.neon',
+		]);
+
+		$ruleRegistry = $this->getRuleRegistry($container);
+		$collectorRegistry = $this->getCollectorRegistry($container);
+
+		$fileAnalyser = $container->getByType(FileAnalyser::class);
+
+		$nodeScopeResolver = $container->getByType(NodeScopeResolver::class);
+		$nodeScopeResolver->setAnalysedFiles($stubFiles);
+
+		$pathRoutingParser = $container->getService('pathRoutingParser');
+		$pathRoutingParser->setAnalysedFiles($stubFiles);
+
+		$analysedFiles = array_fill_keys($stubFiles, true);
+
+		$errors = [];
+		foreach ($stubFiles as $stubFile) {
+			try {
+				$tmpErrors = $fileAnalyser->analyseFile(
+					$stubFile,
+					$analysedFiles,
+					$ruleRegistry,
+					$collectorRegistry,
+					static function (): void {
+					},
+				)->getErrors();
+				foreach ($tmpErrors as $tmpError) {
+					$errors[] = $tmpError->withoutTip()->doNotIgnore();
+				}
+			} catch (Throwable $e) {
+				if ($debug) {
+					throw $e;
+				}
+
+				$internalErrorMessage = sprintf('Internal error: %s', $e->getMessage());
+				$errors[] = (new Error($internalErrorMessage, $stubFile, null, $e))
+					->withIdentifier('phpstan.internal')
+					->withMetadata([
+						InternalError::STACK_TRACE_METADATA_KEY => InternalError::prepareTrace($e),
+						InternalError::STACK_TRACE_AS_STRING_METADATA_KEY => $e->getTraceAsString(),
+					]);
+			}
+		}
+
+		ReflectionProviderStaticAccessor::registerInstance($originalReflectionProvider);
+		PhpVersionStaticAccessor::registerInstance($originalPhpVersion);
+		ObjectType::resetCaches();
+
+		return $errors;
+	}
+
+	private function getRuleRegistry(Container $container): RuleRegistry
+	{
+		$fileTypeMapper = $container->getByType(FileTypeMapper::class);
+		$genericObjectTypeCheck = $container->getByType(GenericObjectTypeCheck::class);
+		$genericAncestorsCheck = $container->getByType(GenericAncestorsCheck::class);
+		$templateTypeCheck = $container->getByType(TemplateTypeCheck::class);
+		$varianceCheck = $container->getByType(VarianceCheck::class);
+		$reflectionProvider = $container->getByType(ReflectionProvider::class);
+		$classNameCheck = $container->getByType(ClassNameCheck::class);
+		$functionDefinitionCheck = $container->getByType(FunctionDefinitionCheck::class);
+		$missingTypehintCheck = $container->getByType(MissingTypehintCheck::class);
+		$unresolvableTypeHelper = $container->getByType(UnresolvableTypeHelper::class);
+		$crossCheckInterfacesHelper = $container->getByType(CrossCheckInterfacesHelper::class);
+		$phpVersion = $container->getByType(PhpVersion::class);
+		$localTypeAliasesCheck = $container->getByType(LocalTypeAliasesCheck::class);
+		$phpClassReflectionExtension = $container->getByType(PhpClassReflectionExtension::class);
+		$genericCallableRuleHelper = $container->getByType(GenericCallableRuleHelper::class);
+		$methodTagTemplateTypeCheck = $container->getByType(MethodTagTemplateTypeCheck::class);
+		$mixinCheck = $container->getByType(MixinCheck::class);
+		$methodTagCheck = new MethodTagCheck($reflectionProvider, $classNameCheck, $genericObjectTypeCheck, $missingTypehintCheck, $unresolvableTypeHelper, true, true);
+		$propertyTagCheck = new PropertyTagCheck($reflectionProvider, $classNameCheck, $genericObjectTypeCheck, $missingTypehintCheck, $unresolvableTypeHelper, true, true);
+		$reflector = $container->getService('stubReflector');
+		$relativePathHelper = $container->getService('simpleRelativePathHelper');
+		$assertRuleHelper = $container->getByType(AssertRuleHelper::class);
+		$conditionalReturnTypeRuleHelper = $container->getByType(ConditionalReturnTypeRuleHelper::class);
+
+		$rules = [
+			// level 0
+			new ExistingClassesInClassImplementsRule($classNameCheck, $reflectionProvider),
+			new ExistingClassesInInterfaceExtendsRule($classNameCheck, $reflectionProvider),
+			new ExistingClassInClassExtendsRule($classNameCheck, $reflectionProvider),
+			new ExistingClassInTraitUseRule($classNameCheck, $reflectionProvider),
+			new ExistingClassesInTypehintsRule($functionDefinitionCheck),
+			new \PHPStan\Rules\Functions\ExistingClassesInTypehintsRule($functionDefinitionCheck),
+			new ExistingClassesInPropertiesRule($reflectionProvider, $classNameCheck, $unresolvableTypeHelper, $phpVersion, true, false),
+			new OverridingMethodRule(
+				$phpVersion,
+				new MethodSignatureRule($phpClassReflectionExtension, true, true),
+				true,
+				new MethodParameterComparisonHelper($phpVersion),
+				new MethodVisibilityComparisonHelper(),
+				$phpClassReflectionExtension,
+				$container->getParameter('checkMissingOverrideMethodAttribute'),
+			),
+			new DuplicateDeclarationRule(),
+			new LocalTypeAliasesRule($localTypeAliasesCheck),
+			new LocalTypeTraitAliasesRule($localTypeAliasesCheck, $reflectionProvider),
+			new LocalTypeTraitUseAliasesRule($localTypeAliasesCheck),
+
+			// level 2
+			new ClassAncestorsRule($genericAncestorsCheck, $crossCheckInterfacesHelper),
+			new ClassTemplateTypeRule($templateTypeCheck),
+			new FunctionTemplateTypeRule($fileTypeMapper, $templateTypeCheck),
+			new FunctionSignatureVarianceRule($varianceCheck),
+			new InterfaceAncestorsRule($genericAncestorsCheck, $crossCheckInterfacesHelper),
+			new InterfaceTemplateTypeRule($templateTypeCheck),
+			new MethodTemplateTypeRule($fileTypeMapper, $templateTypeCheck),
+			new MethodTagTemplateTypeRule($methodTagTemplateTypeCheck),
+			new MethodSignatureVarianceRule($varianceCheck),
+			new TraitTemplateTypeRule($fileTypeMapper, $templateTypeCheck),
+			new IncompatiblePhpDocTypeRule($fileTypeMapper, new IncompatiblePhpDocTypeCheck($genericObjectTypeCheck, $unresolvableTypeHelper, $genericCallableRuleHelper)),
+			new IncompatiblePropertyPhpDocTypeRule($genericObjectTypeCheck, $unresolvableTypeHelper, $genericCallableRuleHelper),
+			new InvalidPhpDocTagValueRule(
+				$container->getByType(Lexer::class),
+				$container->getByType(PhpDocParser::class),
+			),
+			new IncompatibleParamImmediatelyInvokedCallableRule($fileTypeMapper),
+			new IncompatibleSelfOutTypeRule($unresolvableTypeHelper, $genericObjectTypeCheck),
+			new IncompatibleClassConstantPhpDocTypeRule($genericObjectTypeCheck, $unresolvableTypeHelper),
+			new InvalidPHPStanDocTagRule(
+				$container->getByType(Lexer::class),
+				$container->getByType(PhpDocParser::class),
+			),
+			new InvalidThrowsPhpDocValueRule($fileTypeMapper),
+			new MixinTraitRule($mixinCheck, $reflectionProvider),
+			new MixinRule($mixinCheck),
+			new MixinTraitUseRule($mixinCheck),
+			new MethodTagRule($methodTagCheck),
+			new MethodTagTraitRule($methodTagCheck, $reflectionProvider),
+			new MethodTagTraitUseRule($methodTagCheck),
+			new MethodTagTemplateTypeTraitRule($methodTagTemplateTypeCheck, $reflectionProvider),
+			new PropertyTagRule($propertyTagCheck),
+			new PropertyTagTraitRule($propertyTagCheck, $reflectionProvider),
+			new PropertyTagTraitUseRule($propertyTagCheck),
+			new EnumAncestorsRule($genericAncestorsCheck, $crossCheckInterfacesHelper),
+			new EnumTemplateTypeRule(),
+			new PropertyVarianceRule($varianceCheck),
+			new UsedTraitsRule($fileTypeMapper, $genericAncestorsCheck),
+			new FunctionAssertRule($assertRuleHelper),
+			new MethodAssertRule($assertRuleHelper),
+			new FunctionConditionalReturnTypeRule($conditionalReturnTypeRuleHelper),
+			new MethodConditionalReturnTypeRule($conditionalReturnTypeRuleHelper),
+
+			// level 6
+			new MissingFunctionParameterTypehintRule($missingTypehintCheck),
+			new MissingFunctionReturnTypehintRule($missingTypehintCheck),
+			new MissingMethodParameterTypehintRule($missingTypehintCheck),
+			new MissingMethodReturnTypehintRule($missingTypehintCheck),
+			new MissingPropertyTypehintRule($missingTypehintCheck),
+			new MissingMethodSelfOutTypeRule($missingTypehintCheck),
+
+			// duplicate stubs
+			new DuplicateClassDeclarationRule($reflector, $relativePathHelper),
+			new DuplicateFunctionDeclarationRule($reflector, $relativePathHelper),
+		];
+
+		return new DirectRuleRegistry($rules);
+	}
+
+	private function getCollectorRegistry(Container $container): CollectorRegistry
+	{
+		return new CollectorRegistry([]);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/AssertTag.php b/src/PhpDoc/Tag/AssertTag.php
new file mode 100644
index 00000000..ba434f8a
--- /dev/null
+++ b/src/PhpDoc/Tag/AssertTag.php
@@ -0,0 +1,97 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Type;
+
+/** @api */
+final class AssertTag implements TypedTag
+{
+
+	public const NULL = '';
+	public const IF_TRUE = 'true';
+	public const IF_FALSE = 'false';
+
+	private ?Type $originalType = null;
+
+	/**
+	 * @param self::NULL|self::IF_TRUE|self::IF_FALSE $if
+	 */
+	public function __construct(private string $if, private Type $type, private AssertTagParameter $parameter, private bool $negated, private bool $equality, private bool $isExplicit)
+	{
+	}
+
+	/**
+	 * @return self::NULL|self::IF_TRUE|self::IF_FALSE
+	 */
+	public function getIf(): string
+	{
+		return $this->if;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getOriginalType(): Type
+	{
+		return $this->originalType ??= $this->type;
+	}
+
+	public function getParameter(): AssertTagParameter
+	{
+		return $this->parameter;
+	}
+
+	public function isNegated(): bool
+	{
+		return $this->negated;
+	}
+
+	public function isEquality(): bool
+	{
+		return $this->equality;
+	}
+
+	/**
+	 * @return static
+	 */
+	public function withType(Type $type): TypedTag
+	{
+		$tag = new self($this->if, $type, $this->parameter, $this->negated, $this->equality, $this->isExplicit);
+		$tag->originalType = $this->getOriginalType();
+		return $tag;
+	}
+
+	public function withParameter(AssertTagParameter $parameter): self
+	{
+		$tag = new self($this->if, $this->type, $parameter, $this->negated, $this->equality, $this->isExplicit);
+		$tag->originalType = $this->getOriginalType();
+		return $tag;
+	}
+
+	public function negate(): self
+	{
+		if ($this->isEquality()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$tag = new self($this->if, $this->type, $this->parameter, !$this->negated, $this->equality, $this->isExplicit);
+		$tag->originalType = $this->getOriginalType();
+		return $tag;
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->isExplicit;
+	}
+
+	public function toImplicit(): self
+	{
+		return new self($this->if, $this->type, $this->parameter, $this->negated, $this->equality, false);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/AssertTagParameter.php b/src/PhpDoc/Tag/AssertTagParameter.php
new file mode 100644
index 00000000..dd752b33
--- /dev/null
+++ b/src/PhpDoc/Tag/AssertTagParameter.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PhpParser\Node\Expr;
+use function sprintf;
+
+final class AssertTagParameter
+{
+
+	public function __construct(
+		private string $parameterName,
+		private ?string $property,
+		private ?string $method,
+	)
+	{
+	}
+
+	public function getParameterName(): string
+	{
+		return $this->parameterName;
+	}
+
+	public function changeParameterName(string $parameterName): self
+	{
+		return new self(
+			$parameterName,
+			$this->property,
+			$this->method,
+		);
+	}
+
+	public function describe(): string
+	{
+		if ($this->property !== null) {
+			return sprintf('%s->%s', $this->parameterName, $this->property);
+		}
+
+		if ($this->method !== null) {
+			return sprintf('%s->%s()', $this->parameterName, $this->method);
+		}
+
+		return $this->parameterName;
+	}
+
+	public function getExpr(Expr $parameter): Expr
+	{
+		if ($this->property !== null) {
+			return new Expr\PropertyFetch($parameter, $this->property);
+		}
+
+		if ($this->method !== null) {
+			return new Expr\MethodCall($parameter, $this->method);
+		}
+
+		return $parameter;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/DeprecatedTag.php b/src/PhpDoc/Tag/DeprecatedTag.php
new file mode 100644
index 00000000..47801c36
--- /dev/null
+++ b/src/PhpDoc/Tag/DeprecatedTag.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+/**
+ * @api
+ */
+final class DeprecatedTag
+{
+
+	public function __construct(private ?string $message)
+	{
+	}
+
+	public function getMessage(): ?string
+	{
+		return $this->message;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ExtendsTag.php b/src/PhpDoc/Tag/ExtendsTag.php
new file mode 100644
index 00000000..69887b99
--- /dev/null
+++ b/src/PhpDoc/Tag/ExtendsTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ExtendsTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ImplementsTag.php b/src/PhpDoc/Tag/ImplementsTag.php
new file mode 100644
index 00000000..353b7146
--- /dev/null
+++ b/src/PhpDoc/Tag/ImplementsTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ImplementsTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/MethodTag.php b/src/PhpDoc/Tag/MethodTag.php
new file mode 100644
index 00000000..a1a6eb10
--- /dev/null
+++ b/src/PhpDoc/Tag/MethodTag.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class MethodTag
+{
+
+	/**
+	 * @param array<string, MethodTagParameter> $parameters
+	 * @param array<string, TemplateTag> $templateTags
+	 */
+	public function __construct(
+		private Type $returnType,
+		private bool $isStatic,
+		private array $parameters,
+		private array $templateTags,
+	)
+	{
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->returnType;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->isStatic;
+	}
+
+	/**
+	 * @return array<string, MethodTagParameter>
+	 */
+	public function getParameters(): array
+	{
+		return $this->parameters;
+	}
+
+	/**
+	 * @return array<string, TemplateTag>
+	 */
+	public function getTemplateTags(): array
+	{
+		return $this->templateTags;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/MethodTagParameter.php b/src/PhpDoc/Tag/MethodTagParameter.php
new file mode 100644
index 00000000..f5e54ee1
--- /dev/null
+++ b/src/PhpDoc/Tag/MethodTagParameter.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class MethodTagParameter
+{
+
+	public function __construct(
+		private Type $type,
+		private PassedByReference $passedByReference,
+		private bool $isOptional,
+		private bool $isVariadic,
+		private ?Type $defaultValue,
+	)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->isOptional;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->isVariadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/MixinTag.php b/src/PhpDoc/Tag/MixinTag.php
new file mode 100644
index 00000000..3a0a9c1c
--- /dev/null
+++ b/src/PhpDoc/Tag/MixinTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class MixinTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ParamClosureThisTag.php b/src/PhpDoc/Tag/ParamClosureThisTag.php
new file mode 100644
index 00000000..53da6a35
--- /dev/null
+++ b/src/PhpDoc/Tag/ParamClosureThisTag.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ParamClosureThisTag implements TypedTag
+{
+
+	public function __construct(
+		private Type $type,
+	)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ParamOutTag.php b/src/PhpDoc/Tag/ParamOutTag.php
new file mode 100644
index 00000000..286d1a5b
--- /dev/null
+++ b/src/PhpDoc/Tag/ParamOutTag.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ParamOutTag implements TypedTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ParamTag.php b/src/PhpDoc/Tag/ParamTag.php
new file mode 100644
index 00000000..a3517418
--- /dev/null
+++ b/src/PhpDoc/Tag/ParamTag.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ParamTag implements TypedTag
+{
+
+	public function __construct(
+		private Type $type,
+		private bool $isVariadic,
+	)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->isVariadic;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type, $this->isVariadic);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/PropertyTag.php b/src/PhpDoc/Tag/PropertyTag.php
new file mode 100644
index 00000000..bc7b9d53
--- /dev/null
+++ b/src/PhpDoc/Tag/PropertyTag.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class PropertyTag
+{
+
+	public function __construct(
+		private ?Type $readableType,
+		private ?Type $writableType,
+	)
+	{
+	}
+
+	public function getReadableType(): ?Type
+	{
+		return $this->readableType;
+	}
+
+	public function getWritableType(): ?Type
+	{
+		return $this->writableType;
+	}
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getReadableType()
+	 */
+	public function isReadable(): bool
+	{
+		return $this->readableType !== null;
+	}
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getWritableType()
+	 */
+	public function isWritable(): bool
+	{
+		return $this->writableType !== null;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/RequireExtendsTag.php b/src/PhpDoc/Tag/RequireExtendsTag.php
new file mode 100644
index 00000000..ebbc29f8
--- /dev/null
+++ b/src/PhpDoc/Tag/RequireExtendsTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class RequireExtendsTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/RequireImplementsTag.php b/src/PhpDoc/Tag/RequireImplementsTag.php
new file mode 100644
index 00000000..9b5a5663
--- /dev/null
+++ b/src/PhpDoc/Tag/RequireImplementsTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class RequireImplementsTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ReturnTag.php b/src/PhpDoc/Tag/ReturnTag.php
new file mode 100644
index 00000000..6344e90e
--- /dev/null
+++ b/src/PhpDoc/Tag/ReturnTag.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ReturnTag implements TypedTag
+{
+
+	public function __construct(private Type $type, private bool $isExplicit)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->isExplicit;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type, $this->isExplicit);
+	}
+
+	public function toImplicit(): self
+	{
+		return new self($this->type, false);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/SelfOutTypeTag.php b/src/PhpDoc/Tag/SelfOutTypeTag.php
new file mode 100644
index 00000000..ed9b14be
--- /dev/null
+++ b/src/PhpDoc/Tag/SelfOutTypeTag.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class SelfOutTypeTag implements TypedTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/TemplateTag.php b/src/PhpDoc/Tag/TemplateTag.php
new file mode 100644
index 00000000..aabede4c
--- /dev/null
+++ b/src/PhpDoc/Tag/TemplateTag.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class TemplateTag
+{
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(private string $name, private Type $bound, private ?Type $default, private TemplateTypeVariance $variance)
+	{
+	}
+
+	/**
+	 * @return non-empty-string
+	 */
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getBound(): Type
+	{
+		return $this->bound;
+	}
+
+	public function getDefault(): ?Type
+	{
+		return $this->default;
+	}
+
+	public function getVariance(): TemplateTypeVariance
+	{
+		return $this->variance;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/ThrowsTag.php b/src/PhpDoc/Tag/ThrowsTag.php
new file mode 100644
index 00000000..bf593627
--- /dev/null
+++ b/src/PhpDoc/Tag/ThrowsTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ThrowsTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/TypeAliasImportTag.php b/src/PhpDoc/Tag/TypeAliasImportTag.php
new file mode 100644
index 00000000..da291cda
--- /dev/null
+++ b/src/PhpDoc/Tag/TypeAliasImportTag.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+/** @api */
+final class TypeAliasImportTag
+{
+
+	public function __construct(private string $importedAlias, private string $importedFrom, private ?string $importedAs)
+	{
+	}
+
+	public function getImportedAlias(): string
+	{
+		return $this->importedAlias;
+	}
+
+	public function getImportedFrom(): string
+	{
+		return $this->importedFrom;
+	}
+
+	public function getImportedAs(): ?string
+	{
+		return $this->importedAs;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/TypeAliasTag.php b/src/PhpDoc/Tag/TypeAliasTag.php
new file mode 100644
index 00000000..4c9ec277
--- /dev/null
+++ b/src/PhpDoc/Tag/TypeAliasTag.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\TypeAlias;
+
+/**
+ * @api
+ */
+final class TypeAliasTag
+{
+
+	public function __construct(
+		private string $aliasName,
+		private TypeNode $typeNode,
+		private NameScope $nameScope,
+	)
+	{
+	}
+
+	public function getAliasName(): string
+	{
+		return $this->aliasName;
+	}
+
+	public function getTypeAlias(): TypeAlias
+	{
+		return new TypeAlias(
+			$this->typeNode,
+			$this->nameScope,
+		);
+	}
+
+}
diff --git a/src/PhpDoc/Tag/TypedTag.php b/src/PhpDoc/Tag/TypedTag.php
new file mode 100644
index 00000000..1ed9e997
--- /dev/null
+++ b/src/PhpDoc/Tag/TypedTag.php
@@ -0,0 +1,19 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/** @api */
+interface TypedTag
+{
+
+	public function getType(): Type;
+
+	/**
+	 * @return static
+	 */
+	public function withType(Type $type): self;
+
+}
diff --git a/src/PhpDoc/Tag/UsesTag.php b/src/PhpDoc/Tag/UsesTag.php
new file mode 100644
index 00000000..2db1cbda
--- /dev/null
+++ b/src/PhpDoc/Tag/UsesTag.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class UsesTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+}
diff --git a/src/PhpDoc/Tag/VarTag.php b/src/PhpDoc/Tag/VarTag.php
new file mode 100644
index 00000000..191896ec
--- /dev/null
+++ b/src/PhpDoc/Tag/VarTag.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\PhpDoc\Tag;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class VarTag implements TypedTag
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function withType(Type $type): self
+	{
+		return new self($type);
+	}
+
+}
diff --git a/src/PhpDoc/TypeNodeResolver.php b/src/PhpDoc/TypeNodeResolver.php
new file mode 100644
index 00000000..d1a33886
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolver.php
@@ -0,0 +1,1284 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use Closure;
+use Generator;
+use Iterator;
+use IteratorAggregate;
+use Nette\Utils\Strings;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\ConstantResolver;
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprArrayNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprFalseNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprFloatNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNullNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprTrueNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstFetchNode;
+use PHPStan\PhpDocParser\Ast\Type\ArrayShapeNode;
+use PHPStan\PhpDocParser\Ast\Type\ArrayTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeParameterNode;
+use PHPStan\PhpDocParser\Ast\Type\ConditionalTypeForParameterNode;
+use PHPStan\PhpDocParser\Ast\Type\ConditionalTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IntersectionTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\InvalidTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\NullableTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\ObjectShapeNode;
+use PHPStan\PhpDocParser\Ast\Type\OffsetAccessTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\ThisTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\PhpDocParser\Ast\Type\UnionTypeNode;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\ConditionalType;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Helper\GetTemplateTypeType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IterableType;
+use PHPStan\Type\KeyOfType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NewObjectType;
+use PHPStan\Type\NonAcceptingNeverType;
+use PHPStan\Type\NonexistentParentClassType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\OffsetAccessType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\StringAlwaysAcceptingObjectWithToStringType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeAliasResolver;
+use PHPStan\Type\TypeAliasResolverProvider;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\ValueOfType;
+use PHPStan\Type\VoidType;
+use Traversable;
+use function array_key_exists;
+use function array_map;
+use function array_values;
+use function count;
+use function explode;
+use function get_class;
+use function in_array;
+use function max;
+use function min;
+use function preg_match;
+use function preg_quote;
+use function str_contains;
+use function str_replace;
+use function str_starts_with;
+use function strtolower;
+use function substr;
+
+final class TypeNodeResolver
+{
+
+	/** @var array<string, true> */
+	private array $genericTypeResolvingStack = [];
+
+	public function __construct(
+		private TypeNodeResolverExtensionRegistryProvider $extensionRegistryProvider,
+		private ReflectionProvider\ReflectionProviderProvider $reflectionProviderProvider,
+		private TypeAliasResolverProvider $typeAliasResolverProvider,
+		private ConstantResolver $constantResolver,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+	)
+	{
+	}
+
+	/** @api */
+	public function resolve(TypeNode $typeNode, NameScope $nameScope): Type
+	{
+		foreach ($this->extensionRegistryProvider->getRegistry()->getExtensions() as $extension) {
+			$type = $extension->resolve($typeNode, $nameScope);
+			if ($type !== null) {
+				return $type;
+			}
+		}
+
+		if ($typeNode instanceof IdentifierTypeNode) {
+			return $this->resolveIdentifierTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof ThisTypeNode) {
+			return $this->resolveThisTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof NullableTypeNode) {
+			return $this->resolveNullableTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof UnionTypeNode) {
+			return $this->resolveUnionTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof IntersectionTypeNode) {
+			return $this->resolveIntersectionTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof ConditionalTypeNode) {
+			return $this->resolveConditionalTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof ConditionalTypeForParameterNode) {
+			return $this->resolveConditionalTypeForParameterNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof ArrayTypeNode) {
+			return $this->resolveArrayTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof GenericTypeNode) {
+			return $this->resolveGenericTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof CallableTypeNode) {
+			return $this->resolveCallableTypeNode($typeNode, $nameScope);
+
+		} elseif ($typeNode instanceof ArrayShapeNode) {
+			return $this->resolveArrayShapeNode($typeNode, $nameScope);
+		} elseif ($typeNode instanceof ObjectShapeNode) {
+			return $this->resolveObjectShapeNode($typeNode, $nameScope);
+		} elseif ($typeNode instanceof ConstTypeNode) {
+			return $this->resolveConstTypeNode($typeNode, $nameScope);
+		} elseif ($typeNode instanceof OffsetAccessTypeNode) {
+			return $this->resolveOffsetAccessNode($typeNode, $nameScope);
+		} elseif ($typeNode instanceof InvalidTypeNode) {
+			return new MixedType(true);
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveIdentifierTypeNode(IdentifierTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		switch (strtolower($typeNode->name)) {
+			case 'int':
+			case 'integer':
+				return new IntegerType();
+
+			case 'positive-int':
+				return IntegerRangeType::fromInterval(1, null);
+
+			case 'negative-int':
+				return IntegerRangeType::fromInterval(null, -1);
+
+			case 'non-positive-int':
+				return IntegerRangeType::fromInterval(null, 0);
+
+			case 'non-negative-int':
+				return IntegerRangeType::fromInterval(0, null);
+
+			case 'non-zero-int':
+				return new UnionType([
+					IntegerRangeType::fromInterval(null, -1),
+					IntegerRangeType::fromInterval(1, null),
+				]);
+
+			case 'string':
+				return new StringType();
+
+			case 'lowercase-string':
+				return new IntersectionType([new StringType(), new AccessoryLowercaseStringType()]);
+
+			case 'uppercase-string':
+				return new IntersectionType([new StringType(), new AccessoryUppercaseStringType()]);
+
+			case 'literal-string':
+				return new IntersectionType([new StringType(), new AccessoryLiteralStringType()]);
+
+			case 'class-string':
+			case 'interface-string':
+			case 'trait-string':
+				return new ClassStringType();
+
+			case 'enum-string':
+				return new GenericClassStringType(new ObjectType('UnitEnum'));
+
+			case 'callable-string':
+				return new IntersectionType([new StringType(), new CallableType()]);
+
+			case 'array-key':
+				return new BenevolentUnionType([new IntegerType(), new StringType()]);
+
+			case 'scalar':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new UnionType([new IntegerType(), new FloatType(), new StringType(), new BooleanType()]);
+
+			case 'empty-scalar':
+				return TypeCombinator::intersect(
+					new UnionType([new IntegerType(), new FloatType(), new StringType(), new BooleanType()]),
+					StaticTypeFactory::falsey(),
+				);
+
+			case 'non-empty-scalar':
+				return TypeCombinator::remove(
+					new UnionType([new IntegerType(), new FloatType(), new StringType(), new BooleanType()]),
+					StaticTypeFactory::falsey(),
+				);
+
+			case 'number':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new UnionType([new IntegerType(), new FloatType()]);
+
+			case 'numeric':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new UnionType([
+					new IntegerType(),
+					new FloatType(),
+					new IntersectionType([
+						new StringType(),
+						new AccessoryNumericStringType(),
+					]),
+				]);
+
+			case 'numeric-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNumericStringType(),
+				]);
+
+			case 'non-empty-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+				]);
+
+			case 'non-empty-lowercase-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+					new AccessoryLowercaseStringType(),
+				]);
+
+			case 'non-empty-uppercase-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+					new AccessoryUppercaseStringType(),
+				]);
+
+			case 'truthy-string':
+			case 'non-falsy-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNonFalsyStringType(),
+				]);
+
+			case 'non-empty-literal-string':
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+					new AccessoryLiteralStringType(),
+				]);
+
+			case 'bool':
+				return new BooleanType();
+
+			case 'boolean':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new BooleanType();
+
+			case 'true':
+				return new ConstantBooleanType(true);
+
+			case 'false':
+				return new ConstantBooleanType(false);
+
+			case 'null':
+				return new NullType();
+
+			case 'float':
+				return new FloatType();
+
+			case 'double':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new FloatType();
+
+			case 'array':
+			case 'associative-array':
+				return new ArrayType(new MixedType(), new MixedType());
+
+			case 'non-empty-array':
+				return TypeCombinator::intersect(
+					new ArrayType(new MixedType(), new MixedType()),
+					new NonEmptyArrayType(),
+				);
+
+			case 'iterable':
+				return new IterableType(new MixedType(), new MixedType());
+
+			case 'callable':
+				return new CallableType();
+
+			case 'pure-callable':
+				return new CallableType(null, null, true, null, null, [], TrinaryLogic::createYes());
+
+			case 'pure-closure':
+				return ClosureType::createPure();
+
+			case 'resource':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new ResourceType();
+
+			case 'open-resource':
+			case 'closed-resource':
+				return new ResourceType();
+
+			case 'mixed':
+				return new MixedType(true);
+
+			case 'non-empty-mixed':
+				return new MixedType(true, StaticTypeFactory::falsey());
+
+			case 'void':
+				return new VoidType();
+
+			case 'object':
+				return new ObjectWithoutClassType();
+
+			case 'callable-object':
+				return new IntersectionType([new ObjectWithoutClassType(), new CallableType()]);
+
+			case 'callable-array':
+				return new IntersectionType([new ArrayType(new MixedType(), new MixedType()), new CallableType()]);
+
+			case 'never':
+			case 'noreturn':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+
+				if ($type !== null) {
+					return $type;
+				}
+
+				return new NonAcceptingNeverType();
+
+			case 'never-return':
+			case 'never-returns':
+			case 'no-return':
+				return new NonAcceptingNeverType();
+
+			case 'list':
+				return TypeCombinator::intersect(new ArrayType(IntegerRangeType::createAllGreaterThanOrEqualTo(0), new MixedType()), new AccessoryArrayListType());
+			case 'non-empty-list':
+				return TypeCombinator::intersect(
+					new ArrayType(IntegerRangeType::createAllGreaterThanOrEqualTo(0), new MixedType()),
+					new NonEmptyArrayType(),
+					new AccessoryArrayListType(),
+				);
+
+			case 'empty':
+				$type = $this->tryResolvePseudoTypeClassType($typeNode, $nameScope);
+				if ($type !== null) {
+					return $type;
+				}
+
+				return StaticTypeFactory::falsey();
+			case '__stringandstringable':
+				return new StringAlwaysAcceptingObjectWithToStringType();
+		}
+
+		if ($nameScope->getClassName() !== null) {
+			switch (strtolower($typeNode->name)) {
+				case 'self':
+					return new ObjectType($nameScope->getClassName());
+
+				case 'static':
+					if ($this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
+						$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
+
+						return new StaticType($classReflection);
+					}
+
+					return new ErrorType();
+				case 'parent':
+					if ($this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
+						$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
+						if ($classReflection->getParentClass() !== null) {
+							return new ObjectType($classReflection->getParentClass()->getName());
+						}
+					}
+
+					return new NonexistentParentClassType();
+			}
+		}
+
+		if (!$nameScope->shouldBypassTypeAliases()) {
+			$typeAlias = $this->getTypeAliasResolver()->resolveTypeAlias($typeNode->name, $nameScope);
+			if ($typeAlias !== null) {
+				return $typeAlias;
+			}
+		}
+
+		$templateType = $nameScope->resolveTemplateTypeName($typeNode->name);
+		if ($templateType !== null) {
+			return $templateType;
+		}
+
+		$stringName = $nameScope->resolveStringName($typeNode->name);
+		if (str_contains($stringName, '-') && !str_starts_with($stringName, 'OCI-')) {
+			return new ErrorType();
+		}
+
+		if ($this->mightBeConstant($typeNode->name) && !$this->getReflectionProvider()->hasClass($stringName)) {
+			$constType = $this->tryResolveConstant($typeNode->name, $nameScope);
+			if ($constType !== null) {
+				return $constType;
+			}
+		}
+
+		return new ObjectType($stringName);
+	}
+
+	private function mightBeConstant(string $name): bool
+	{
+		return preg_match('((?:^|\\\\)[A-Z_][A-Z0-9_]*$)', $name) > 0;
+	}
+
+	private function tryResolveConstant(string $name, NameScope $nameScope): ?Type
+	{
+		foreach ($nameScope->resolveConstantNames($name) as $constName) {
+			$nameNode = new Name\FullyQualified(explode('\\', $constName));
+			$constType = $this->constantResolver->resolveConstant($nameNode, null);
+			if ($constType !== null) {
+				return $constType;
+			}
+		}
+
+		return null;
+	}
+
+	private function tryResolvePseudoTypeClassType(IdentifierTypeNode $typeNode, NameScope $nameScope): ?Type
+	{
+		if ($nameScope->hasUseAlias($typeNode->name)) {
+			return new ObjectType($nameScope->resolveStringName($typeNode->name));
+		}
+
+		if ($nameScope->getNamespace() === null) {
+			return null;
+		}
+
+		$className = $nameScope->resolveStringName($typeNode->name);
+
+		if ($this->getReflectionProvider()->hasClass($className)) {
+			return new ObjectType($className);
+		}
+
+		return null;
+	}
+
+	private function resolveThisTypeNode(ThisTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$className = $nameScope->getClassName();
+		if ($className !== null) {
+			if ($this->getReflectionProvider()->hasClass($className)) {
+				return new ThisType($this->getReflectionProvider()->getClass($className));
+			}
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveNullableTypeNode(NullableTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		return TypeCombinator::union($this->resolve($typeNode->type, $nameScope), new NullType());
+	}
+
+	private function resolveUnionTypeNode(UnionTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$iterableTypeNodes = [];
+		$otherTypeNodes = [];
+
+		foreach ($typeNode->types as $innerTypeNode) {
+			if ($innerTypeNode instanceof ArrayTypeNode) {
+				$iterableTypeNodes[] = $innerTypeNode->type;
+			} else {
+				$otherTypeNodes[] = $innerTypeNode;
+			}
+		}
+
+		$otherTypeTypes = $this->resolveMultiple($otherTypeNodes, $nameScope);
+		if (count($iterableTypeNodes) > 0) {
+			$arrayTypeTypes = $this->resolveMultiple($iterableTypeNodes, $nameScope);
+			$arrayTypeType = TypeCombinator::union(...$arrayTypeTypes);
+			$addArray = true;
+
+			foreach ($otherTypeTypes as &$type) {
+				if (!$type->isIterable()->yes() || !$type->getIterableValueType()->isSuperTypeOf($arrayTypeType)->yes()) {
+					continue;
+				}
+
+				if ($type instanceof ObjectType && !$type instanceof GenericObjectType) {
+					$type = new IntersectionType([$type, new IterableType(new MixedType(), $arrayTypeType)]);
+				} elseif ($type instanceof ArrayType) {
+					$type = new ArrayType(new MixedType(), $arrayTypeType);
+				} elseif ($type instanceof ConstantArrayType) {
+					$type = new ArrayType(new MixedType(), $arrayTypeType);
+				} elseif ($type instanceof IterableType) {
+					$type = new IterableType(new MixedType(), $arrayTypeType);
+				} else {
+					continue;
+				}
+
+				$addArray = false;
+			}
+
+			if ($addArray) {
+				$otherTypeTypes[] = new ArrayType(new MixedType(), $arrayTypeType);
+			}
+		}
+
+		return TypeCombinator::union(...$otherTypeTypes);
+	}
+
+	private function resolveIntersectionTypeNode(IntersectionTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$types = $this->resolveMultiple($typeNode->types, $nameScope);
+		return TypeCombinator::intersect(...$types);
+	}
+
+	private function resolveConditionalTypeNode(ConditionalTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		return new ConditionalType(
+			$this->resolve($typeNode->subjectType, $nameScope),
+			$this->resolve($typeNode->targetType, $nameScope),
+			$this->resolve($typeNode->if, $nameScope),
+			$this->resolve($typeNode->else, $nameScope),
+			$typeNode->negated,
+		);
+	}
+
+	private function resolveConditionalTypeForParameterNode(ConditionalTypeForParameterNode $typeNode, NameScope $nameScope): Type
+	{
+		return new ConditionalTypeForParameter(
+			$typeNode->parameterName,
+			$this->resolve($typeNode->targetType, $nameScope),
+			$this->resolve($typeNode->if, $nameScope),
+			$this->resolve($typeNode->else, $nameScope),
+			$typeNode->negated,
+		);
+	}
+
+	private function resolveArrayTypeNode(ArrayTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$itemType = $this->resolve($typeNode->type, $nameScope);
+		return new ArrayType(new BenevolentUnionType([new IntegerType(), new StringType()]), $itemType);
+	}
+
+	private function resolveGenericTypeNode(GenericTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$mainTypeName = strtolower($typeNode->type->name);
+		$genericTypes = $this->resolveMultiple($typeNode->genericTypes, $nameScope);
+		$variances = array_map(
+			static function (string $variance): TemplateTypeVariance {
+				switch ($variance) {
+					case GenericTypeNode::VARIANCE_INVARIANT:
+						return TemplateTypeVariance::createInvariant();
+					case GenericTypeNode::VARIANCE_COVARIANT:
+						return TemplateTypeVariance::createCovariant();
+					case GenericTypeNode::VARIANCE_CONTRAVARIANT:
+						return TemplateTypeVariance::createContravariant();
+					case GenericTypeNode::VARIANCE_BIVARIANT:
+						return TemplateTypeVariance::createBivariant();
+				}
+			},
+			$typeNode->variances,
+		);
+
+		if (in_array($mainTypeName, ['array', 'non-empty-array'], true)) {
+			if (count($genericTypes) === 1) { // array<ValueType>
+				$arrayType = new ArrayType(new BenevolentUnionType([new IntegerType(), new StringType()]), $genericTypes[0]);
+			} elseif (count($genericTypes) === 2) { // array<KeyType, ValueType>
+				$keyType = TypeCombinator::intersect($genericTypes[0]->toArrayKey(), new UnionType([
+					new IntegerType(),
+					new StringType(),
+				]))->toArrayKey();
+				$finiteTypes = $keyType->getFiniteTypes();
+				if (
+					count($finiteTypes) === 1
+					&& ($finiteTypes[0] instanceof ConstantStringType || $finiteTypes[0] instanceof ConstantIntegerType)
+				) {
+					$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+					$arrayBuilder->setOffsetValueType($finiteTypes[0], $genericTypes[1], true);
+					$arrayType = $arrayBuilder->getArray();
+				} else {
+					$arrayType = new ArrayType($keyType, $genericTypes[1]);
+				}
+			} else {
+				return new ErrorType();
+			}
+
+			if ($mainTypeName === 'non-empty-array') {
+				return TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
+			}
+
+			return $arrayType;
+		} elseif (in_array($mainTypeName, ['list', 'non-empty-list'], true)) {
+			if (count($genericTypes) === 1) { // list<ValueType>
+				$listType = TypeCombinator::intersect(new ArrayType(IntegerRangeType::createAllGreaterThanOrEqualTo(0), $genericTypes[0]), new AccessoryArrayListType());
+				if ($mainTypeName === 'non-empty-list') {
+					return TypeCombinator::intersect($listType, new NonEmptyArrayType());
+				}
+
+				return $listType;
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'iterable') {
+			if (count($genericTypes) === 1) { // iterable<ValueType>
+				return new IterableType(new MixedType(true), $genericTypes[0]);
+
+			}
+
+			if (count($genericTypes) === 2) { // iterable<KeyType, ValueType>
+				return new IterableType($genericTypes[0], $genericTypes[1]);
+			}
+		} elseif (in_array($mainTypeName, ['class-string', 'interface-string'], true)) {
+			if (count($genericTypes) === 1) {
+				$genericType = $genericTypes[0];
+				if ($genericType->isObject()->yes() || $genericType instanceof MixedType) {
+					return new GenericClassStringType($genericType);
+				}
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'enum-string') {
+			if (count($genericTypes) === 1) {
+				$genericType = $genericTypes[0];
+				return new GenericClassStringType(TypeCombinator::intersect($genericType, new ObjectType('UnitEnum')));
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'int') {
+			if (count($genericTypes) === 2) { // int<min, max>, int<1, 3>
+
+				if ($genericTypes[0] instanceof ConstantIntegerType) {
+					$min = $genericTypes[0]->getValue();
+				} elseif ($typeNode->genericTypes[0] instanceof IdentifierTypeNode && $typeNode->genericTypes[0]->name === 'min') {
+					$min = null;
+				} else {
+					return new ErrorType();
+				}
+
+				if ($genericTypes[1] instanceof ConstantIntegerType) {
+					$max = $genericTypes[1]->getValue();
+				} elseif ($typeNode->genericTypes[1] instanceof IdentifierTypeNode && $typeNode->genericTypes[1]->name === 'max') {
+					$max = null;
+				} else {
+					return new ErrorType();
+				}
+
+				return IntegerRangeType::fromInterval($min, $max);
+			}
+		} elseif ($mainTypeName === 'key-of') {
+			if (count($genericTypes) === 1) { // key-of<ValueType>
+				$type = new KeyOfType($genericTypes[0]);
+				return $type->isResolvable() ? $type->resolve() : $type;
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'value-of') {
+			if (count($genericTypes) === 1) { // value-of<ValueType>
+				$type = new ValueOfType($genericTypes[0]);
+
+				return $type->isResolvable() ? $type->resolve() : $type;
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'int-mask-of') {
+			if (count($genericTypes) === 1) { // int-mask-of<Class::CONST*>
+				$maskType = $this->expandIntMaskToType($genericTypes[0]);
+				if ($maskType !== null) {
+					return $maskType;
+				}
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'int-mask') {
+			if (count($genericTypes) > 0) { // int-mask<1, 2, 4>
+				$maskType = $this->expandIntMaskToType(TypeCombinator::union(...$genericTypes));
+				if ($maskType !== null) {
+					return $maskType;
+				}
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === '__benevolent') {
+			if (count($genericTypes) === 1) {
+				return TypeUtils::toBenevolentUnion($genericTypes[0]);
+			}
+			return new ErrorType();
+		} elseif ($mainTypeName === 'template-type') {
+			if (count($genericTypes) === 3) {
+				$result = [];
+				/** @var class-string $ancestorClassName */
+				foreach ($genericTypes[1]->getObjectClassNames() as $ancestorClassName) {
+					foreach ($genericTypes[2]->getConstantStrings() as $templateTypeName) {
+						$result[] = new GetTemplateTypeType($genericTypes[0], $ancestorClassName, $templateTypeName->getValue());
+					}
+				}
+
+				return TypeCombinator::union(...$result);
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'new') {
+			if (count($genericTypes) === 1) {
+				$type = new NewObjectType($genericTypes[0]);
+				return $type->isResolvable() ? $type->resolve() : $type;
+			}
+
+			return new ErrorType();
+		} elseif ($mainTypeName === 'static') {
+			if ($nameScope->getClassName() !== null && $this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
+				$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
+
+				return new GenericStaticType($classReflection, $genericTypes, null, $variances);
+			}
+
+			return new ErrorType();
+		}
+
+		$mainType = $this->resolveIdentifierTypeNode($typeNode->type, $nameScope);
+		$mainTypeObjectClassNames = $mainType->getObjectClassNames();
+		if (count($mainTypeObjectClassNames) > 1) {
+			if ($mainType instanceof TemplateType) {
+				return new ErrorType();
+			}
+			throw new ShouldNotHappenException();
+		}
+		$mainTypeClassName = $mainTypeObjectClassNames[0] ?? null;
+
+		if ($mainTypeClassName !== null) {
+			if (!$this->getReflectionProvider()->hasClass($mainTypeClassName)) {
+				return new GenericObjectType($mainTypeClassName, $genericTypes, null, null, $variances);
+			}
+
+			$classReflection = $this->getReflectionProvider()->getClass($mainTypeClassName);
+			if ($classReflection->isGeneric()) {
+				$templateTypes = array_values($classReflection->getTemplateTypeMap()->getTypes());
+				for ($i = count($genericTypes), $templateTypesCount = count($templateTypes); $i < $templateTypesCount; $i++) {
+					$templateType = $templateTypes[$i];
+					if (!$templateType instanceof TemplateType || $templateType->getDefault() === null) {
+						continue;
+					}
+					$genericTypes[] = $templateType->getDefault();
+				}
+
+				if (in_array($mainTypeClassName, [
+					Traversable::class,
+					IteratorAggregate::class,
+					Iterator::class,
+				], true)) {
+					if (count($genericTypes) === 1) {
+						return new GenericObjectType($mainTypeClassName, [
+							new MixedType(true),
+							$genericTypes[0],
+						], null, null, [
+							TemplateTypeVariance::createInvariant(),
+							$variances[0],
+						]);
+					}
+
+					if (count($genericTypes) === 2) {
+						return new GenericObjectType($mainTypeClassName, [
+							$genericTypes[0],
+							$genericTypes[1],
+						], null, null, [
+							$variances[0],
+							$variances[1],
+						]);
+					}
+				}
+				if ($mainTypeClassName === Generator::class) {
+					if (count($genericTypes) === 1) {
+						$mixed = new MixedType(true);
+						return new GenericObjectType($mainTypeClassName, [
+							$mixed,
+							$genericTypes[0],
+							$mixed,
+							$mixed,
+						], null, null, [
+							TemplateTypeVariance::createInvariant(),
+							$variances[0],
+							TemplateTypeVariance::createInvariant(),
+							TemplateTypeVariance::createInvariant(),
+						]);
+					}
+
+					if (count($genericTypes) === 2) {
+						$mixed = new MixedType(true);
+						return new GenericObjectType($mainTypeClassName, [
+							$genericTypes[0],
+							$genericTypes[1],
+							$mixed,
+							$mixed,
+						], null, null, [
+							$variances[0],
+							$variances[1],
+							TemplateTypeVariance::createInvariant(),
+							TemplateTypeVariance::createInvariant(),
+						]);
+					}
+				}
+
+				if (!$mainType->isIterable()->yes()) {
+					return new GenericObjectType($mainTypeClassName, $genericTypes, null, null, $variances);
+				}
+
+				if (
+					count($genericTypes) !== 1
+					|| $classReflection->getTemplateTypeMap()->count() === 1
+				) {
+					return new GenericObjectType($mainTypeClassName, $genericTypes, null, null, $variances);
+				}
+			}
+		}
+
+		if ($mainType->isIterable()->yes()) {
+			if ($mainTypeClassName !== null) {
+				if (isset($this->genericTypeResolvingStack[$mainTypeClassName])) {
+					return new ErrorType();
+				}
+
+				$this->genericTypeResolvingStack[$mainTypeClassName] = true;
+			}
+
+			try {
+				if (count($genericTypes) === 1) { // Foo<ValueType>
+					return TypeCombinator::intersect(
+						$mainType,
+						new IterableType(new MixedType(true), $genericTypes[0]),
+					);
+				}
+
+				if (count($genericTypes) === 2) { // Foo<KeyType, ValueType>
+					return TypeCombinator::intersect(
+						$mainType,
+						new IterableType($genericTypes[0], $genericTypes[1]),
+					);
+				}
+			} finally {
+				if ($mainTypeClassName !== null) {
+					unset($this->genericTypeResolvingStack[$mainTypeClassName]);
+				}
+			}
+		}
+
+		if ($mainTypeClassName !== null) {
+			return new GenericObjectType($mainTypeClassName, $genericTypes, null, null, $variances);
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveCallableTypeNode(CallableTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$templateTags = [];
+
+		if (count($typeNode->templateTypes) > 0) {
+			foreach ($typeNode->templateTypes as $templateType) {
+				$templateTags[$templateType->name] = new TemplateTag(
+					$templateType->name,
+					$templateType->bound !== null
+						? $this->resolve($templateType->bound, $nameScope)
+						: new MixedType(),
+					$templateType->default !== null
+						? $this->resolve($templateType->default, $nameScope)
+						: null,
+					TemplateTypeVariance::createInvariant(),
+				);
+			}
+			$templateTypeScope = TemplateTypeScope::createWithAnonymousFunction();
+
+			$templateTypeMap = new TemplateTypeMap(array_map(
+				static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag),
+				$templateTags,
+			));
+
+			$nameScope = $nameScope->withTemplateTypeMap($templateTypeMap);
+		} else {
+			$templateTypeMap = TemplateTypeMap::createEmpty();
+		}
+
+		$mainType = $this->resolve($typeNode->identifier, $nameScope);
+
+		$isVariadic = false;
+		$parameters = array_values(array_map(
+			function (CallableTypeParameterNode $parameterNode) use ($nameScope, &$isVariadic): NativeParameterReflection {
+				$isVariadic = $isVariadic || $parameterNode->isVariadic;
+				$parameterName = $parameterNode->parameterName;
+				if (str_starts_with($parameterName, '$')) {
+					$parameterName = substr($parameterName, 1);
+				}
+
+				return new NativeParameterReflection(
+					$parameterName,
+					$parameterNode->isOptional || $parameterNode->isVariadic,
+					$this->resolve($parameterNode->type, $nameScope),
+					$parameterNode->isReference ? PassedByReference::createCreatesNewVariable() : PassedByReference::createNo(),
+					$parameterNode->isVariadic,
+					null,
+				);
+			},
+			$typeNode->parameters,
+		));
+
+		$returnType = $this->resolve($typeNode->returnType, $nameScope);
+
+		if ($mainType instanceof CallableType) {
+			$pure = $mainType->isPure();
+			if ($pure->yes() && $returnType->isVoid()->yes()) {
+				return new ErrorType();
+			}
+
+			return new CallableType($parameters, $returnType, $isVariadic, $templateTypeMap, null, $templateTags, $pure);
+
+		} elseif (
+			$mainType instanceof ObjectType
+			&& $mainType->getClassName() === Closure::class
+		) {
+			return new ClosureType($parameters, $returnType, $isVariadic, $templateTypeMap, null, null, $templateTags, [], [
+				new SimpleImpurePoint(
+					'functionCall',
+					'call to a Closure',
+					false,
+				),
+			]);
+		} elseif ($mainType instanceof ClosureType) {
+			$closure = new ClosureType($parameters, $returnType, $isVariadic, $templateTypeMap, null, null, $templateTags, [], $mainType->getImpurePoints(), $mainType->getInvalidateExpressions(), $mainType->getUsedVariables(), $mainType->acceptsNamedArguments());
+			if ($closure->isPure()->yes() && $returnType->isVoid()->yes()) {
+				return new ErrorType();
+			}
+
+			return $closure;
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveArrayShapeNode(ArrayShapeNode $typeNode, NameScope $nameScope): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+		if (count($typeNode->items) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+			$builder->degradeToGeneralArray(true);
+		}
+
+		foreach ($typeNode->items as $itemNode) {
+			$offsetType = null;
+			if ($itemNode->keyName instanceof ConstExprIntegerNode) {
+				$offsetType = new ConstantIntegerType((int) $itemNode->keyName->value);
+			} elseif ($itemNode->keyName instanceof IdentifierTypeNode) {
+				$offsetType = new ConstantStringType($itemNode->keyName->name);
+			} elseif ($itemNode->keyName instanceof ConstExprStringNode) {
+				$offsetType = new ConstantStringType($itemNode->keyName->value);
+			} elseif ($itemNode->keyName !== null) {
+				throw new ShouldNotHappenException('Unsupported key node type: ' . get_class($itemNode->keyName));
+			}
+			$builder->setOffsetValueType($offsetType, $this->resolve($itemNode->valueType, $nameScope), $itemNode->optional);
+		}
+
+		$arrayType = $builder->getArray();
+		if (in_array($typeNode->kind, [
+			ArrayShapeNode::KIND_LIST,
+			ArrayShapeNode::KIND_NON_EMPTY_LIST,
+		], true)) {
+			$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+		}
+
+		if (in_array($typeNode->kind, [
+			ArrayShapeNode::KIND_NON_EMPTY_ARRAY,
+			ArrayShapeNode::KIND_NON_EMPTY_LIST,
+		], true)) {
+			$arrayType = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
+		}
+
+		return $arrayType;
+	}
+
+	private function resolveObjectShapeNode(ObjectShapeNode $typeNode, NameScope $nameScope): Type
+	{
+		$properties = [];
+		$optionalProperties = [];
+		foreach ($typeNode->items as $itemNode) {
+			if ($itemNode->keyName instanceof IdentifierTypeNode) {
+				$propertyName = $itemNode->keyName->name;
+			} elseif ($itemNode->keyName instanceof ConstExprStringNode) {
+				$propertyName = $itemNode->keyName->value;
+			}
+
+			if ($itemNode->optional) {
+				$optionalProperties[] = $propertyName;
+			}
+
+			$properties[$propertyName] = $this->resolve($itemNode->valueType, $nameScope);
+		}
+
+		return new ObjectShapeType($properties, $optionalProperties);
+	}
+
+	private function resolveConstTypeNode(ConstTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$constExpr = $typeNode->constExpr;
+		if ($constExpr instanceof ConstExprArrayNode) {
+			throw new ShouldNotHappenException(); // we prefer array shapes
+		}
+
+		if (
+			$constExpr instanceof ConstExprFalseNode
+			|| $constExpr instanceof ConstExprTrueNode
+			|| $constExpr instanceof ConstExprNullNode
+		) {
+			throw new ShouldNotHappenException(); // we prefer IdentifierTypeNode
+		}
+
+		if ($constExpr instanceof ConstFetchNode) {
+			if ($constExpr->className === '') {
+				throw new ShouldNotHappenException(); // global constant should get parsed as class name in IdentifierTypeNode
+			}
+
+			if ($nameScope->getClassName() !== null) {
+				switch (strtolower($constExpr->className)) {
+					case 'static':
+					case 'self':
+						$className = $nameScope->getClassName();
+						break;
+
+					case 'parent':
+						if ($this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
+							$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
+							if ($classReflection->getParentClass() === null) {
+								return new ErrorType();
+
+							}
+
+							$className = $classReflection->getParentClass()->getName();
+						}
+						break;
+				}
+			}
+
+			if (!isset($className)) {
+				$className = $nameScope->resolveStringName($constExpr->className);
+			}
+
+			if (!$this->getReflectionProvider()->hasClass($className)) {
+				return new ErrorType();
+			}
+
+			$classReflection = $this->getReflectionProvider()->getClass($className);
+
+			$constantName = $constExpr->name;
+			if (Strings::contains($constantName, '*')) {
+				// convert * into .*? and escape everything else so the constants can be matched against the pattern
+				$pattern = '{^' . str_replace('\\*', '.*?', preg_quote($constantName)) . '$}D';
+				$constantTypes = [];
+				foreach ($classReflection->getNativeReflection()->getReflectionConstants() as $reflectionConstant) {
+					$classConstantName = $reflectionConstant->getName();
+					if (Strings::match($classConstantName, $pattern) === null) {
+						continue;
+					}
+
+					if ($classReflection->isEnum() && $classReflection->hasEnumCase($classConstantName)) {
+						$constantTypes[] = new EnumCaseObjectType($classReflection->getName(), $classConstantName);
+						continue;
+					}
+
+					$declaringClassName = $reflectionConstant->getDeclaringClass()->getName();
+					if (!$this->getReflectionProvider()->hasClass($declaringClassName)) {
+						continue;
+					}
+
+					$constantTypes[] = $this->initializerExprTypeResolver->getType(
+						$reflectionConstant->getValueExpression(),
+						InitializerExprContext::fromClassReflection(
+							$this->getReflectionProvider()->getClass($declaringClassName),
+						),
+					);
+				}
+
+				if (count($constantTypes) === 0) {
+					return new ErrorType();
+				}
+
+				return TypeCombinator::union(...$constantTypes);
+			}
+
+			if (!$classReflection->hasConstant($constantName)) {
+				return new ErrorType();
+			}
+
+			if ($classReflection->isEnum() && $classReflection->hasEnumCase($constantName)) {
+				return new EnumCaseObjectType($classReflection->getName(), $constantName);
+			}
+
+			$reflectionConstant = $classReflection->getNativeReflection()->getReflectionConstant($constantName);
+			if ($reflectionConstant === false) {
+				return new ErrorType();
+			}
+			$declaringClass = $reflectionConstant->getDeclaringClass();
+
+			return $this->initializerExprTypeResolver->getType($reflectionConstant->getValueExpression(), InitializerExprContext::fromClass($declaringClass->getName(), $declaringClass->getFileName() ?: null));
+		}
+
+		if ($constExpr instanceof ConstExprFloatNode) {
+			return new ConstantFloatType((float) $constExpr->value);
+		}
+
+		if ($constExpr instanceof ConstExprIntegerNode) {
+			return new ConstantIntegerType((int) $constExpr->value);
+		}
+
+		if ($constExpr instanceof ConstExprStringNode) {
+			return new ConstantStringType($constExpr->value);
+		}
+
+		return new ErrorType();
+	}
+
+	private function resolveOffsetAccessNode(OffsetAccessTypeNode $typeNode, NameScope $nameScope): Type
+	{
+		$type = $this->resolve($typeNode->type, $nameScope);
+		$offset = $this->resolve($typeNode->offset, $nameScope);
+
+		if ($type->isOffsetAccessible()->no() || $type->hasOffsetValueType($offset)->no()) {
+			return new ErrorType();
+		}
+
+		return new OffsetAccessType($type, $offset);
+	}
+
+	private function expandIntMaskToType(Type $type): ?Type
+	{
+		$ints = array_map(static fn (ConstantIntegerType $type) => $type->getValue(), TypeUtils::getConstantIntegers($type));
+		if (count($ints) === 0) {
+			return null;
+		}
+
+		$values = [];
+
+		foreach ($ints as $int) {
+			if ($int !== 0 && !array_key_exists($int, $values)) {
+				foreach ($values as $value) {
+					$computedValue = $value | $int;
+					$values[$computedValue] = $computedValue;
+				}
+			}
+
+			$values[$int] = $int;
+		}
+
+		$values[0] = 0;
+
+		$min = min($values);
+		$max = max($values);
+
+		if ($max - $min === count($values) - 1) {
+			return IntegerRangeType::fromInterval($min, $max);
+		}
+
+		return TypeCombinator::union(...array_map(static fn ($value) => new ConstantIntegerType($value), $values));
+	}
+
+	/**
+	 * @api
+	 * @param TypeNode[] $typeNodes
+	 * @return list<Type>
+	 */
+	public function resolveMultiple(array $typeNodes, NameScope $nameScope): array
+	{
+		$types = [];
+		foreach ($typeNodes as $typeNode) {
+			$types[] = $this->resolve($typeNode, $nameScope);
+		}
+
+		return $types;
+	}
+
+	private function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProviderProvider->getReflectionProvider();
+	}
+
+	private function getTypeAliasResolver(): TypeAliasResolver
+	{
+		return $this->typeAliasResolverProvider->getTypeAliasResolver();
+	}
+
+}
diff --git a/src/PhpDoc/TypeNodeResolverAwareExtension.php b/src/PhpDoc/TypeNodeResolverAwareExtension.php
new file mode 100644
index 00000000..d2d675f7
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolverAwareExtension.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+/** @api */
+interface TypeNodeResolverAwareExtension
+{
+
+	public function setTypeNodeResolver(TypeNodeResolver $typeNodeResolver): void;
+
+}
diff --git a/src/PhpDoc/TypeNodeResolverExtension.php b/src/PhpDoc/TypeNodeResolverExtension.php
new file mode 100644
index 00000000..6d710608
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolverExtension.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Type;
+
+/**
+ * This is the interface type node resolver extensions implement for custom PHPDoc types.
+ *
+ * To register it in the configuration file use the `phpstan.phpDoc.typeNodeResolverExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.phpDoc.typeNodeResolverExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/custom-phpdoc-types
+ *
+ * @api
+ */
+interface TypeNodeResolverExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.phpDoc.typeNodeResolverExtension';
+
+	public function resolve(TypeNode $typeNode, NameScope $nameScope): ?Type;
+
+}
diff --git a/src/PhpDoc/TypeNodeResolverExtensionAwareRegistry.php b/src/PhpDoc/TypeNodeResolverExtensionAwareRegistry.php
new file mode 100644
index 00000000..0d136d26
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolverExtensionAwareRegistry.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+final class TypeNodeResolverExtensionAwareRegistry implements TypeNodeResolverExtensionRegistry
+{
+
+	/**
+	 * @param TypeNodeResolverExtension[] $extensions
+	 */
+	public function __construct(
+		TypeNodeResolver $typeNodeResolver,
+		private array $extensions,
+	)
+	{
+		foreach ($extensions as $extension) {
+			if (!$extension instanceof TypeNodeResolverAwareExtension) {
+				continue;
+			}
+
+			$extension->setTypeNodeResolver($typeNodeResolver);
+		}
+	}
+
+	/**
+	 * @return TypeNodeResolverExtension[]
+	 */
+	public function getExtensions(): array
+	{
+		return $this->extensions;
+	}
+
+}
diff --git a/src/PhpDoc/TypeNodeResolverExtensionRegistry.php b/src/PhpDoc/TypeNodeResolverExtensionRegistry.php
new file mode 100644
index 00000000..2f17e5e0
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolverExtensionRegistry.php
@@ -0,0 +1,14 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+interface TypeNodeResolverExtensionRegistry
+{
+
+	/**
+	 * @return TypeNodeResolverExtension[]
+	 */
+	public function getExtensions(): array;
+
+}
diff --git a/src/PhpDoc/TypeNodeResolverExtensionRegistryProvider.php b/src/PhpDoc/TypeNodeResolverExtensionRegistryProvider.php
new file mode 100644
index 00000000..f2f901c6
--- /dev/null
+++ b/src/PhpDoc/TypeNodeResolverExtensionRegistryProvider.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+interface TypeNodeResolverExtensionRegistryProvider
+{
+
+	public function getRegistry(): TypeNodeResolverExtensionRegistry;
+
+}
diff --git a/src/PhpDoc/TypeStringResolver.php b/src/PhpDoc/TypeStringResolver.php
new file mode 100644
index 00000000..0f42998e
--- /dev/null
+++ b/src/PhpDoc/TypeStringResolver.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\PhpDoc;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\TokenIterator;
+use PHPStan\PhpDocParser\Parser\TypeParser;
+use PHPStan\Type\Type;
+
+final class TypeStringResolver
+{
+
+	public function __construct(private Lexer $typeLexer, private TypeParser $typeParser, private TypeNodeResolver $typeNodeResolver)
+	{
+	}
+
+	/** @api */
+	public function resolve(string $typeString, ?NameScope $nameScope = null): Type
+	{
+		$tokens = new TokenIterator($this->typeLexer->tokenize($typeString));
+		$typeNode = $this->typeParser->parse($tokens);
+		$tokens->consumeTokenType(Lexer::TOKEN_END); // @phpstan-ignore missingType.checkedException
+
+		return $this->typeNodeResolver->resolve($typeNode, $nameScope ?? new NameScope(null, []));
+	}
+
+}
diff --git a/src/Process/CpuCoreCounter.php b/src/Process/CpuCoreCounter.php
new file mode 100644
index 00000000..c2f65ad2
--- /dev/null
+++ b/src/Process/CpuCoreCounter.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Process;
+return;
+
+use Fidry\CpuCoreCounter\CpuCoreCounter as FidryCpuCoreCounter;
+use Fidry\CpuCoreCounter\NumberOfCpuCoreNotFound;
+
+final class CpuCoreCounter
+{
+
+	private ?int $count = null;
+
+	public function getNumberOfCpuCores(): int
+	{
+		if ($this->count !== null) {
+			return $this->count;
+		}
+
+		try {
+			$this->count = (new FidryCpuCoreCounter())->getCount();
+		} catch (NumberOfCpuCoreNotFound) {
+			$this->count = 1;
+		}
+
+		return $this->count;
+	}
+
+}
diff --git a/src/Process/ProcessCanceledException.php b/src/Process/ProcessCanceledException.php
new file mode 100644
index 00000000..faa01267
--- /dev/null
+++ b/src/Process/ProcessCanceledException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Process;
+return;
+
+use Exception;
+
+final class ProcessCanceledException extends Exception
+{
+
+}
diff --git a/src/Process/ProcessCrashedException.php b/src/Process/ProcessCrashedException.php
new file mode 100644
index 00000000..8e7fb3eb
--- /dev/null
+++ b/src/Process/ProcessCrashedException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Process;
+return;
+
+use Exception;
+
+final class ProcessCrashedException extends Exception
+{
+
+}
diff --git a/src/Process/ProcessHelper.php b/src/Process/ProcessHelper.php
new file mode 100644
index 00000000..1ea06112
--- /dev/null
+++ b/src/Process/ProcessHelper.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Process;
+return;
+
+use PHPStan\Command\AnalyseCommand;
+use Symfony\Component\Console\Input\InputInterface;
+use function array_merge;
+use function escapeshellarg;
+use function implode;
+use function ini_get;
+use function is_bool;
+use function php_ini_loaded_file;
+use function sprintf;
+use const PHP_BINARY;
+
+final class ProcessHelper
+{
+
+	/**
+	 * @param string[] $additionalItems
+	 */
+	public static function getWorkerCommand(
+		string $mainScript,
+		string $commandName,
+		?string $projectConfigFile,
+		array $additionalItems,
+		InputInterface $input,
+	): string
+	{
+		$phpIni = php_ini_loaded_file();
+		$phpCmd = $phpIni === false ? escapeshellarg(PHP_BINARY) : sprintf('%s -c %s', escapeshellarg(PHP_BINARY), escapeshellarg($phpIni));
+
+		$processCommandArray = [
+			$phpCmd,
+		];
+
+		if ($input->getOption('memory-limit') === null) {
+			$processCommandArray[] = '-d';
+			$processCommandArray[] = 'memory_limit=' . ini_get('memory_limit');
+		}
+
+		foreach ([$mainScript, $commandName] as $arg) {
+			$processCommandArray[] = escapeshellarg($arg);
+		}
+
+		if ($projectConfigFile !== null) {
+			$processCommandArray[] = '--configuration';
+			$processCommandArray[] = escapeshellarg($projectConfigFile);
+		}
+
+		$options = [
+			AnalyseCommand::OPTION_LEVEL,
+			'autoload-file',
+			'memory-limit',
+			'xdebug',
+			'verbose',
+		];
+		foreach ($options as $optionName) {
+			/** @var bool|string|null $optionValue */
+			$optionValue = $input->getOption($optionName);
+			if (is_bool($optionValue)) {
+				if ($optionValue === true) {
+					$processCommandArray[] = sprintf('--%s', $optionName);
+				}
+				continue;
+			}
+			if ($optionValue === null) {
+				continue;
+			}
+
+			$processCommandArray[] = sprintf('--%s=%s', $optionName, escapeshellarg($optionValue));
+		}
+
+		$processCommandArray = array_merge($processCommandArray, $additionalItems);
+
+		$processCommandArray[] = '--';
+
+		/** @var string[] $paths */
+		$paths = $input->getArgument('paths');
+		foreach ($paths as $path) {
+			$processCommandArray[] = escapeshellarg($path);
+		}
+
+		return implode(' ', $processCommandArray);
+	}
+
+}
diff --git a/src/Process/ProcessPromise.php b/src/Process/ProcessPromise.php
new file mode 100644
index 00000000..6bebd9a2
--- /dev/null
+++ b/src/Process/ProcessPromise.php
@@ -0,0 +1,99 @@
+<?php 
+
+namespace PHPStan\Process;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use React\ChildProcess\Process;
+use React\EventLoop\LoopInterface;
+use React\Promise\Deferred;
+use React\Promise\PromiseInterface;
+use function fclose;
+use function rewind;
+use function stream_get_contents;
+use function tmpfile;
+
+final class ProcessPromise
+{
+
+	/** @var Deferred<string> */
+	private Deferred $deferred;
+
+	private ?Process $process = null;
+
+	private bool $canceled = false;
+
+	public function __construct(private LoopInterface $loop, private string $name, private string $command)
+	{
+		$this->deferred = new Deferred();
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	/**
+	 * @return PromiseInterface<string>
+	 */
+	public function run(): PromiseInterface
+	{
+		$tmpStdOutResource = tmpfile();
+		if ($tmpStdOutResource === false) {
+			throw new ShouldNotHappenException('Failed creating temp file for stdout.');
+		}
+		$tmpStdErrResource = tmpfile();
+		if ($tmpStdErrResource === false) {
+			throw new ShouldNotHappenException('Failed creating temp file for stderr.');
+		}
+
+		$this->process = new Process($this->command, null, null, [
+			1 => $tmpStdOutResource,
+			2 => $tmpStdErrResource,
+		]);
+		$this->process->start($this->loop);
+
+		$this->process->on('exit', function ($exitCode) use ($tmpStdOutResource, $tmpStdErrResource): void {
+			if ($this->canceled) {
+				fclose($tmpStdOutResource);
+				fclose($tmpStdErrResource);
+				return;
+			}
+			rewind($tmpStdOutResource);
+			$stdOut = stream_get_contents($tmpStdOutResource);
+			fclose($tmpStdOutResource);
+
+			rewind($tmpStdErrResource);
+			$stdErr = stream_get_contents($tmpStdErrResource);
+			fclose($tmpStdErrResource);
+
+			if ($exitCode === null) {
+				$this->deferred->reject(new ProcessCrashedException($stdOut . $stdErr));
+				return;
+			}
+
+			if ($exitCode === 0) {
+				if ($stdOut === false) {
+					$stdOut = '';
+				}
+				$this->deferred->resolve($stdOut);
+				return;
+			}
+
+			$this->deferred->reject(new ProcessCrashedException($stdOut . $stdErr));
+		});
+
+		return $this->deferred->promise();
+	}
+
+	public function cancel(): void
+	{
+		if ($this->process === null) {
+			throw new ShouldNotHappenException('Cancelling process before running');
+		}
+		$this->canceled = true;
+		$this->process->terminate();
+		$this->deferred->reject(new ProcessCanceledException());
+	}
+
+}
diff --git a/src/Reflection/AdditionalConstructorsExtension.php b/src/Reflection/AdditionalConstructorsExtension.php
new file mode 100644
index 00000000..02fcc2e5
--- /dev/null
+++ b/src/Reflection/AdditionalConstructorsExtension.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/**
+ * This is the extension interface to implement if you want to dynamically
+ * mark methods as constructor. As opposed to simply list them in the configuration file.
+ *
+ * To register it in the configuration file use the `phpstan.additionalConstructorsExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.additionalConstructorsExtension
+ * ```
+ *
+ * @api
+ */
+interface AdditionalConstructorsExtension
+{
+
+	public const EXTENSION_TAG = 'phpstan.additionalConstructorsExtension';
+
+	/** @return string[] */
+	public function getAdditionalConstructors(ClassReflection $classReflection): array;
+
+}
diff --git a/src/Reflection/AllowedSubTypesClassReflectionExtension.php b/src/Reflection/AllowedSubTypesClassReflectionExtension.php
new file mode 100644
index 00000000..1269b7b7
--- /dev/null
+++ b/src/Reflection/AllowedSubTypesClassReflectionExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * This is the extension interface to implement if you want to described
+ * allowed subtypes - to limit which classes can implement a certain interface
+ * or extend a certain parent class.
+ *
+ * To register it in the configuration file use the `phpstan.broker.allowedSubTypesClassReflectionExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.allowedSubTypesClassReflectionExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/allowed-subtypes
+ *
+ * @api
+ */
+interface AllowedSubTypesClassReflectionExtension
+{
+
+	public function supports(ClassReflection $classReflection): bool;
+
+	/**
+	 * @return array<Type>
+	 */
+	public function getAllowedSubTypes(ClassReflection $classReflection): array;
+
+}
diff --git a/src/Reflection/Annotations/AnnotationMethodReflection.php b/src/Reflection/Annotations/AnnotationMethodReflection.php
new file mode 100644
index 00000000..4869f60e
--- /dev/null
+++ b/src/Reflection/Annotations/AnnotationMethodReflection.php
@@ -0,0 +1,185 @@
+<?php 
+
+namespace PHPStan\Reflection\Annotations;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+
+final class AnnotationMethodReflection implements ExtendedMethodReflection
+{
+
+	/** @var list<ExtendedFunctionVariant>|null */
+	private ?array $variants = null;
+
+	/**
+	 * @param list<AnnotationsMethodParameterReflection> $parameters
+	 */
+	public function __construct(
+		private string $name,
+		private ClassReflection $declaringClass,
+		private Type $returnType,
+		private array $parameters,
+		private bool $isStatic,
+		private bool $isVariadic,
+		private ?Type $throwType,
+		private TemplateTypeMap $templateTypeMap,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->isStatic;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getVariants(): array
+	{
+		if ($this->variants === null) {
+			$this->variants = [
+				new ExtendedFunctionVariant(
+					$this->templateTypeMap,
+					null,
+					$this->parameters,
+					$this->isVariadic,
+					$this->returnType,
+					$this->returnType,
+					new MixedType(),
+				),
+			];
+		}
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->throwType;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if ($this->returnType->isVoid()->yes()) {
+			return TrinaryLogic::createYes();
+		}
+
+		if ((new ThisType($this->declaringClass))->isSuperTypeOf($this->returnType)->yes()) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->declaringClass->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->hasSideEffects()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Annotations/AnnotationPropertyReflection.php b/src/Reflection/Annotations/AnnotationPropertyReflection.php
new file mode 100644
index 00000000..effcc4cf
--- /dev/null
+++ b/src/Reflection/Annotations/AnnotationPropertyReflection.php
@@ -0,0 +1,152 @@
+<?php 
+
+namespace PHPStan\Reflection\Annotations;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class AnnotationPropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private Type $readableType,
+		private Type $writableType,
+		private bool $readable,
+		private bool $writable,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return true;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->readableType;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->readableType;
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->writableType;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->readableType->equals($this->writableType);
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->readable;
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->writable;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Annotations/AnnotationsMethodParameterReflection.php b/src/Reflection/Annotations/AnnotationsMethodParameterReflection.php
new file mode 100644
index 00000000..d450c8e8
--- /dev/null
+++ b/src/Reflection/Annotations/AnnotationsMethodParameterReflection.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Reflection\Annotations;
+return;
+
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class AnnotationsMethodParameterReflection implements ExtendedParameterReflection
+{
+
+	public function __construct(private string $name, private Type $type, private PassedByReference $passedByReference, private bool $isOptional, private bool $isVariadic, private ?Type $defaultValue)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->isOptional;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->type;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClosureThisType(): ?Type
+	{
+		return null;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->isVariadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Annotations/AnnotationsMethodsClassReflectionExtension.php b/src/Reflection/Annotations/AnnotationsMethodsClassReflectionExtension.php
new file mode 100644
index 00000000..6bb768a2
--- /dev/null
+++ b/src/Reflection/Annotations/AnnotationsMethodsClassReflectionExtension.php
@@ -0,0 +1,138 @@
+<?php 
+
+namespace PHPStan\Reflection\Annotations;
+return;
+
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodsClassReflectionExtension;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Type;
+use function array_map;
+use function count;
+
+final class AnnotationsMethodsClassReflectionExtension implements MethodsClassReflectionExtension
+{
+
+	/** @var ExtendedMethodReflection[][] */
+	private array $methods = [];
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		if (!isset($this->methods[$classReflection->getCacheKey()][$methodName])) {
+			$method = $this->findClassReflectionWithMethod($classReflection, $classReflection, $methodName);
+			if ($method === null) {
+				return false;
+			}
+			$this->methods[$classReflection->getCacheKey()][$methodName] = $method;
+		}
+
+		return isset($this->methods[$classReflection->getCacheKey()][$methodName]);
+	}
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): ExtendedMethodReflection
+	{
+		return $this->methods[$classReflection->getCacheKey()][$methodName];
+	}
+
+	private function findClassReflectionWithMethod(
+		ClassReflection $classReflection,
+		ClassReflection $declaringClass,
+		string $methodName,
+	): ?ExtendedMethodReflection
+	{
+		$methodTags = $classReflection->getMethodTags();
+		if (isset($methodTags[$methodName])) {
+			$parameters = [];
+			foreach ($methodTags[$methodName]->getParameters() as $parameterName => $parameterTag) {
+				$parameters[] = new AnnotationsMethodParameterReflection(
+					$parameterName,
+					$parameterTag->getType(),
+					$parameterTag->passedByReference(),
+					$parameterTag->isOptional(),
+					$parameterTag->isVariadic(),
+					$parameterTag->getDefaultValue(),
+				);
+			}
+
+			$templateTypeScope = TemplateTypeScope::createWithClass($classReflection->getName());
+
+			$templateTypeMap = new TemplateTypeMap(array_map(
+				static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag),
+				$methodTags[$methodName]->getTemplateTags(),
+			));
+
+			$isStatic = $methodTags[$methodName]->isStatic();
+			$nativeCallMethodName = $isStatic ? '__callStatic' : '__call';
+
+			return new AnnotationMethodReflection(
+				$methodName,
+				$declaringClass,
+				TemplateTypeHelper::resolveTemplateTypes(
+					$methodTags[$methodName]->getReturnType(),
+					$classReflection->getActiveTemplateTypeMap(),
+					$classReflection->getCallSiteVarianceMap(),
+					TemplateTypeVariance::createCovariant(),
+				),
+				$parameters,
+				$isStatic,
+				$this->detectMethodVariadic($parameters),
+				$classReflection->hasNativeMethod($nativeCallMethodName)
+					? $classReflection->getNativeMethod($nativeCallMethodName)->getThrowType()
+					: null,
+				$templateTypeMap,
+			);
+		}
+
+		foreach ($classReflection->getTraits() as $traitClass) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithMethod($traitClass, $classReflection, $methodName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		while ($parentClass !== null) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithMethod($parentClass, $parentClass, $methodName);
+			if ($methodWithDeclaringClass !== null) {
+				return $methodWithDeclaringClass;
+			}
+
+			$parentClass = $parentClass->getParentClass();
+		}
+
+		foreach ($classReflection->getInterfaces() as $interfaceClass) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithMethod($interfaceClass, $interfaceClass, $methodName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param AnnotationsMethodParameterReflection[] $parameters
+	 */
+	private function detectMethodVariadic(array $parameters): bool
+	{
+		if ($parameters === []) {
+			return false;
+		}
+
+		$possibleVariadicParameterIndex = count($parameters) - 1;
+		$possibleVariadicParameter = $parameters[$possibleVariadicParameterIndex];
+
+		return $possibleVariadicParameter->isVariadic();
+	}
+
+}
diff --git a/src/Reflection/Annotations/AnnotationsPropertiesClassReflectionExtension.php b/src/Reflection/Annotations/AnnotationsPropertiesClassReflectionExtension.php
new file mode 100644
index 00000000..974e2459
--- /dev/null
+++ b/src/Reflection/Annotations/AnnotationsPropertiesClassReflectionExtension.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Reflection\Annotations;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\NeverType;
+
+final class AnnotationsPropertiesClassReflectionExtension implements PropertiesClassReflectionExtension
+{
+
+	/** @var ExtendedPropertyReflection[][] */
+	private array $properties = [];
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		if (!isset($this->properties[$classReflection->getCacheKey()][$propertyName])) {
+			$property = $this->findClassReflectionWithProperty($classReflection, $classReflection, $propertyName);
+			if ($property === null) {
+				return false;
+			}
+			$this->properties[$classReflection->getCacheKey()][$propertyName] = $property;
+		}
+
+		return isset($this->properties[$classReflection->getCacheKey()][$propertyName]);
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): ExtendedPropertyReflection
+	{
+		return $this->properties[$classReflection->getCacheKey()][$propertyName];
+	}
+
+	private function findClassReflectionWithProperty(
+		ClassReflection $classReflection,
+		ClassReflection $declaringClass,
+		string $propertyName,
+	): ?ExtendedPropertyReflection
+	{
+		$propertyTags = $classReflection->getPropertyTags();
+		if (isset($propertyTags[$propertyName])) {
+			$propertyTag = $propertyTags[$propertyName];
+
+			$isReadable = $propertyTags[$propertyName]->isReadable();
+			$isWritable = $propertyTags[$propertyName]->isWritable();
+			if ($classReflection->hasNativeProperty($propertyName)) {
+				$nativeProperty = $classReflection->getNativeProperty($propertyName);
+				$isReadable = $isReadable || $nativeProperty->isReadable();
+				$isWritable = $isWritable || $nativeProperty->isWritable();
+			}
+
+			return new AnnotationPropertyReflection(
+				$declaringClass,
+				TemplateTypeHelper::resolveTemplateTypes(
+					$propertyTag->getReadableType() ?? new NeverType(),
+					$classReflection->getActiveTemplateTypeMap(),
+					$classReflection->getCallSiteVarianceMap(),
+					TemplateTypeVariance::createCovariant(),
+				),
+				TemplateTypeHelper::resolveTemplateTypes(
+					$propertyTag->getWritableType() ?? new NeverType(),
+					$classReflection->getActiveTemplateTypeMap(),
+					$classReflection->getCallSiteVarianceMap(),
+					TemplateTypeVariance::createContravariant(),
+				),
+				$isReadable,
+				$isWritable,
+			);
+		}
+
+		foreach ($classReflection->getTraits() as $traitClass) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithProperty($traitClass, $classReflection, $propertyName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		while ($parentClass !== null) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithProperty($parentClass, $parentClass, $propertyName);
+			if ($methodWithDeclaringClass !== null) {
+				return $methodWithDeclaringClass;
+			}
+
+			$parentClass = $parentClass->getParentClass();
+		}
+
+		foreach ($classReflection->getInterfaces() as $interfaceClass) {
+			$methodWithDeclaringClass = $this->findClassReflectionWithProperty($interfaceClass, $interfaceClass, $propertyName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/Assertions.php b/src/Reflection/Assertions.php
new file mode 100644
index 00000000..9a8d6e5c
--- /dev/null
+++ b/src/Reflection/Assertions.php
@@ -0,0 +1,112 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\Tag\AssertTag;
+use PHPStan\Type\Type;
+use function array_filter;
+use function array_map;
+use function array_merge;
+use function count;
+
+/**
+ * @api
+ */
+final class Assertions
+{
+
+	private static ?self $empty = null;
+
+	/**
+	 * @param AssertTag[] $asserts
+	 */
+	private function __construct(private array $asserts)
+	{
+	}
+
+	/**
+	 * @return AssertTag[]
+	 */
+	public function getAll(): array
+	{
+		return $this->asserts;
+	}
+
+	/**
+	 * @return AssertTag[]
+	 */
+	public function getAsserts(): array
+	{
+		return array_filter($this->asserts, static fn (AssertTag $assert) => $assert->getIf() === AssertTag::NULL);
+	}
+
+	/**
+	 * @return AssertTag[]
+	 */
+	public function getAssertsIfTrue(): array
+	{
+		return array_merge(
+			array_filter($this->asserts, static fn (AssertTag $assert) => $assert->getIf() === AssertTag::IF_TRUE),
+			array_map(
+				static fn (AssertTag $assert) => $assert->negate(),
+				array_filter($this->asserts, static fn (AssertTag $assert) => $assert->getIf() === AssertTag::IF_FALSE && !$assert->isEquality()),
+			),
+		);
+	}
+
+	/**
+	 * @return AssertTag[]
+	 */
+	public function getAssertsIfFalse(): array
+	{
+		return array_merge(
+			array_filter($this->asserts, static fn (AssertTag $assert) => $assert->getIf() === AssertTag::IF_FALSE),
+			array_map(
+				static fn (AssertTag $assert) => $assert->negate(),
+				array_filter($this->asserts, static fn (AssertTag $assert) => $assert->getIf() === AssertTag::IF_TRUE && !$assert->isEquality()),
+			),
+		);
+	}
+
+	/**
+	 * @param callable(Type): Type $callable
+	 */
+	public function mapTypes(callable $callable): self
+	{
+		$assertTagsCallback = static fn (AssertTag $tag): AssertTag => $tag->withType($callable($tag->getType()));
+
+		return new self(array_map($assertTagsCallback, $this->asserts));
+	}
+
+	public function intersectWith(Assertions $other): self
+	{
+		return new self(array_merge($this->getAll(), $other->getAll()));
+	}
+
+	public static function createEmpty(): self
+	{
+		$empty = self::$empty;
+
+		if ($empty !== null) {
+			return $empty;
+		}
+
+		$empty = new self([]);
+		self::$empty = $empty;
+
+		return $empty;
+	}
+
+	public static function createFromResolvedPhpDocBlock(ResolvedPhpDocBlock $phpDocBlock): self
+	{
+		$tags = $phpDocBlock->getAssertTags();
+		if (count($tags) === 0) {
+			return self::createEmpty();
+		}
+
+		return new self($tags);
+	}
+
+}
diff --git a/src/Reflection/AttributeReflection.php b/src/Reflection/AttributeReflection.php
new file mode 100644
index 00000000..0e6609b0
--- /dev/null
+++ b/src/Reflection/AttributeReflection.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class AttributeReflection
+{
+
+	/**
+	 * @param array<string, Type> $argumentTypes
+	 */
+	public function __construct(private string $name, private array $argumentTypes)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	/**
+	 * @return array<string, Type>
+	 */
+	public function getArgumentTypes(): array
+	{
+		return $this->argumentTypes;
+	}
+
+}
diff --git a/src/Reflection/AttributeReflectionFactory.php b/src/Reflection/AttributeReflectionFactory.php
new file mode 100644
index 00000000..31d1e441
--- /dev/null
+++ b/src/Reflection/AttributeReflectionFactory.php
@@ -0,0 +1,135 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PhpParser\Node\AttributeGroup;
+use PhpParser\Node\Expr;
+use PHPStan\BetterReflection\Reflection\Adapter\FakeReflectionAttribute;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionAttribute;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function count;
+use function is_int;
+
+final class AttributeReflectionFactory
+{
+
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionProviderProvider $reflectionProviderProvider,
+	)
+	{
+	}
+
+	/**
+	 * @param list<ReflectionAttribute|FakeReflectionAttribute> $reflections
+	 * @return list<AttributeReflection>
+	 */
+	public function fromNativeReflection(array $reflections, InitializerExprContext $context): array
+	{
+		$attributes = [];
+		foreach ($reflections as $reflection) {
+			$attribute = $this->fromNameAndArgumentExpressions($reflection->getName(), $reflection->getArgumentsExpressions(), $context);
+			if ($attribute === null) {
+				continue;
+			}
+
+			$attributes[] = $attribute;
+		}
+
+		return $attributes;
+	}
+
+	/**
+	 * @param AttributeGroup[] $attrGroups
+	 * @return list<AttributeReflection>
+	 */
+	public function fromAttrGroups(array $attrGroups, InitializerExprContext $context): array
+	{
+		$attributes = [];
+		foreach ($attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				$arguments = [];
+				foreach ($attr->args as $i => $arg) {
+					if ($arg->name === null) {
+						$argName = $i;
+					} else {
+						$argName = $arg->name->toString();
+					}
+
+					$arguments[$argName] = $arg->value;
+				}
+				$attributeReflection = $this->fromNameAndArgumentExpressions($attr->name->toString(), $arguments, $context);
+				if ($attributeReflection === null) {
+					continue;
+				}
+
+				$attributes[] = $attributeReflection;
+			}
+		}
+
+		return $attributes;
+	}
+
+	/**
+	 * @param array<int|string, Expr> $arguments
+	 */
+	private function fromNameAndArgumentExpressions(string $name, array $arguments, InitializerExprContext $context): ?AttributeReflection
+	{
+		if (count($arguments) === 0) {
+			return new AttributeReflection($name, []);
+		}
+
+		$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+		if (!$reflectionProvider->hasClass($name)) {
+			return null;
+		}
+
+		$classReflection = $reflectionProvider->getClass($name);
+		if (!$classReflection->hasConstructor()) {
+			return null;
+		}
+
+		if (!$classReflection->isAttributeClass()) {
+			return null;
+		}
+
+		$constructor = $classReflection->getConstructor();
+		$parameters = $constructor->getOnlyVariant()->getParameters();
+		$namedArgTypes = [];
+		foreach ($arguments as $i => $argExpr) {
+			if (is_int($i)) {
+				if (isset($parameters[$i])) {
+					$namedArgTypes[$parameters[$i]->getName()] = $this->initializerExprTypeResolver->getType($argExpr, $context);
+					continue;
+				}
+				if (count($parameters) > 0) {
+					$lastParameter = $parameters[count($parameters) - 1];
+					if ($lastParameter->isVariadic()) {
+						$parameterName = $lastParameter->getName();
+						if (array_key_exists($parameterName, $namedArgTypes)) {
+							$namedArgTypes[$parameterName] = TypeCombinator::union($namedArgTypes[$parameterName], $this->initializerExprTypeResolver->getType($argExpr, $context));
+							continue;
+						}
+						$namedArgTypes[$parameterName] = $this->initializerExprTypeResolver->getType($argExpr, $context);
+					}
+				}
+				continue;
+			}
+
+			foreach ($parameters as $parameter) {
+				if ($parameter->getName() !== $i) {
+					continue;
+				}
+
+				$namedArgTypes[$i] = $this->initializerExprTypeResolver->getType($argExpr, $context);
+				break;
+			}
+		}
+
+		return new AttributeReflection($classReflection->getName(), $namedArgTypes);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/BetterReflectionProvider.php b/src/Reflection/BetterReflection/BetterReflectionProvider.php
new file mode 100644
index 00000000..14d16514
--- /dev/null
+++ b/src/Reflection/BetterReflection/BetterReflectionProvider.php
@@ -0,0 +1,484 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection;
+return;
+
+use Closure;
+use Nette\Utils\Strings;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Identifier\Exception\InvalidIdentifierName;
+use PHPStan\BetterReflection\NodeCompiler\Exception\UnableToCompileNode;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\BetterReflection\Reflection\ReflectionEnum;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\Broker\AnonymousClassNameHelper;
+use PHPStan\Broker\ClassNotFoundException;
+use PHPStan\Broker\ConstantNotFoundException;
+use PHPStan\Broker\FunctionNotFoundException;
+use PHPStan\DependencyInjection\Reflection\ClassReflectionExtensionRegistryProvider;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileReader;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\Parser\AnonymousClassVisitor;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\PhpDoc\Tag\ParamClosureThisTag;
+use PHPStan\PhpDoc\Tag\ParamOutTag;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\ClassNameHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Constant\RuntimeConstantReflection;
+use PHPStan\Reflection\ConstantReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\FunctionReflectionFactory;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\Php\ExitFunctionReflection;
+use PHPStan\Reflection\Php\PhpFunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\SignatureMap\NativeFunctionReflectionProvider;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Type;
+use function array_key_exists;
+use function array_key_first;
+use function array_map;
+use function base64_decode;
+use function in_array;
+use function sprintf;
+use function strtolower;
+use const PHP_VERSION_ID;
+
+final class BetterReflectionProvider implements ReflectionProvider
+{
+
+	/** @var FunctionReflection[] */
+	private array $functionReflections = [];
+
+	/** @var ClassReflection[] */
+	private array $classReflections = [];
+
+	/** @var ClassReflection[] */
+	private static array $anonymousClasses = [];
+
+	/** @var array<string, ConstantReflection> */
+	private array $cachedConstants = [];
+
+	/**
+	 * @param list<string> $universalObjectCratesClasses
+	 */
+	public function __construct(
+		private ReflectionProvider\ReflectionProviderProvider $reflectionProviderProvider,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ClassReflectionExtensionRegistryProvider $classReflectionExtensionRegistryProvider,
+		private Reflector $reflector,
+		private FileTypeMapper $fileTypeMapper,
+		private PhpDocInheritanceResolver $phpDocInheritanceResolver,
+		private PhpVersion $phpVersion,
+		private NativeFunctionReflectionProvider $nativeFunctionReflectionProvider,
+		private StubPhpDocProvider $stubPhpDocProvider,
+		private FunctionReflectionFactory $functionReflectionFactory,
+		private RelativePathHelper $relativePathHelper,
+		private AnonymousClassNameHelper $anonymousClassNameHelper,
+		private FileHelper $fileHelper,
+		private PhpStormStubsSourceStubber $phpstormStubsSourceStubber,
+		private SignatureMapProvider $signatureMapProvider,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private array $universalObjectCratesClasses,
+	)
+	{
+	}
+
+	public function hasClass(string $className): bool
+	{
+		if (isset(self::$anonymousClasses[$className])) {
+			return true;
+		}
+
+		if (!ClassNameHelper::isValidClassName($className)) {
+			return false;
+		}
+
+		try {
+			$this->reflector->reflectClass($className);
+			return true;
+		} catch (IdentifierNotFound) {
+			return false;
+		} catch (InvalidIdentifierName) {
+			return false;
+		}
+	}
+
+	public function getClass(string $className): ClassReflection
+	{
+		if (isset(self::$anonymousClasses[$className])) {
+			return self::$anonymousClasses[$className];
+		}
+
+		try {
+			$reflectionClass = $this->reflector->reflectClass($className);
+		} catch (IdentifierNotFound | InvalidIdentifierName) {
+			throw new ClassNotFoundException($className);
+		}
+
+		$reflectionClassName = strtolower($reflectionClass->getName());
+
+		if (array_key_exists($reflectionClassName, $this->classReflections)) {
+			return $this->classReflections[$reflectionClassName];
+		}
+
+		$enumAdapter = base64_decode('UEhQU3RhblxCZXR0ZXJSZWZsZWN0aW9uXFJlZmxlY3Rpb25cQWRhcHRlclxSZWZsZWN0aW9uRW51bQ==', true);
+
+		$classReflection = new ClassReflection(
+			$this->reflectionProviderProvider->getReflectionProvider(),
+			$this->initializerExprTypeResolver,
+			$this->fileTypeMapper,
+			$this->stubPhpDocProvider,
+			$this->phpDocInheritanceResolver,
+			$this->phpVersion,
+			$this->signatureMapProvider,
+			$this->attributeReflectionFactory,
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getPropertiesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getMethodsClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getAllowedSubTypesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsPropertyClassReflectionExtension(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsMethodsClassReflectionExtension(),
+			$reflectionClass->getName(),
+			$reflectionClass instanceof ReflectionEnum && PHP_VERSION_ID >= 80000 ? new $enumAdapter($reflectionClass) : new ReflectionClass($reflectionClass),
+			null,
+			null,
+			$this->stubPhpDocProvider->findClassPhpDoc($reflectionClass->getName()),
+			$this->universalObjectCratesClasses,
+		);
+
+		$this->classReflections[$reflectionClassName] = $classReflection;
+
+		return $classReflection;
+	}
+
+	public function getClassName(string $className): string
+	{
+		if (!$this->hasClass($className)) {
+			throw new ClassNotFoundException($className);
+		}
+
+		if (isset(self::$anonymousClasses[$className])) {
+			return self::$anonymousClasses[$className]->getDisplayName();
+		}
+
+		$reflectionClass = $this->reflector->reflectClass($className);
+
+		return $reflectionClass->getName();
+	}
+
+	public function getAnonymousClassReflection(Node\Stmt\Class_ $classNode, Scope $scope): ClassReflection
+	{
+		if (isset($classNode->namespacedName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (!$scope->isInTrait()) {
+			$scopeFile = $scope->getFile();
+		} else {
+			$scopeFile = $scope->getTraitReflection()->getFileName();
+			if ($scopeFile === null) {
+				$scopeFile = $scope->getFile();
+			}
+		}
+
+		$filename = $this->fileHelper->normalizePath($this->relativePathHelper->getRelativePath($scopeFile), '/');
+		$className = $this->anonymousClassNameHelper->getAnonymousClassName(
+			$classNode,
+			$scopeFile,
+		);
+		$classNode->name = new Node\Identifier($className);
+		$classNode->namespacedName = null;
+
+		if (isset(self::$anonymousClasses[$className])) {
+			return self::$anonymousClasses[$className];
+		}
+
+		$reflectionClass = \PHPStan\BetterReflection\Reflection\ReflectionClass::createFromNode(
+			$this->reflector,
+			$classNode,
+			new LocatedSource(FileReader::read($scopeFile), $className, $scopeFile),
+			null,
+		);
+
+		$displayParentName = $reflectionClass->getParentClassName();
+		if ($displayParentName === null) {
+			// https://3v4l.org/6FBuP
+			$classInterfaceNames = $reflectionClass->getInterfaceNames();
+			if ($classInterfaceNames !== []) {
+				$displayParentName = $classInterfaceNames[array_key_first($classInterfaceNames)];
+			} else {
+				$displayParentName = 'class';
+			}
+		}
+
+		/** @var int|null $classLineIndex */
+		$classLineIndex = $classNode->getAttribute(AnonymousClassVisitor::ATTRIBUTE_LINE_INDEX);
+		if ($classLineIndex === null) {
+			$displayName = sprintf('%s@anonymous/%s:%s', $displayParentName, $filename, $classNode->getStartLine());
+		} else {
+			$displayName = sprintf('%s@anonymous/%s:%s:%d', $displayParentName, $filename, $classNode->getStartLine(), $classLineIndex);
+		}
+
+		self::$anonymousClasses[$className] = new ClassReflection(
+			$this->reflectionProviderProvider->getReflectionProvider(),
+			$this->initializerExprTypeResolver,
+			$this->fileTypeMapper,
+			$this->stubPhpDocProvider,
+			$this->phpDocInheritanceResolver,
+			$this->phpVersion,
+			$this->signatureMapProvider,
+			$this->attributeReflectionFactory,
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getPropertiesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getMethodsClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getAllowedSubTypesClassReflectionExtensions(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsPropertyClassReflectionExtension(),
+			$this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsMethodsClassReflectionExtension(),
+			$displayName,
+			new ReflectionClass($reflectionClass),
+			$scopeFile,
+			null,
+			$this->stubPhpDocProvider->findClassPhpDoc($className),
+			$this->universalObjectCratesClasses,
+		);
+		$this->classReflections[$className] = self::$anonymousClasses[$className];
+
+		return self::$anonymousClasses[$className];
+	}
+
+	public function getUniversalObjectCratesClasses(): array
+	{
+		return $this->universalObjectCratesClasses;
+	}
+
+	public function hasFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return $this->resolveFunctionName($nameNode, $namespaceAnswerer) !== null;
+	}
+
+	public function getFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): FunctionReflection
+	{
+		$functionName = $this->resolveFunctionName($nameNode, $namespaceAnswerer);
+		if ($functionName === null) {
+			throw new FunctionNotFoundException((string) $nameNode);
+		}
+
+		$lowerCasedFunctionName = strtolower($functionName);
+		if (isset($this->functionReflections[$lowerCasedFunctionName])) {
+			return $this->functionReflections[$lowerCasedFunctionName];
+		}
+
+		if (in_array($lowerCasedFunctionName, ['exit', 'die'], true)) {
+			return $this->functionReflections[$lowerCasedFunctionName] = new ExitFunctionReflection($lowerCasedFunctionName);
+		}
+
+		$nativeFunctionReflection = $this->nativeFunctionReflectionProvider->findFunctionReflection($lowerCasedFunctionName);
+		if ($nativeFunctionReflection !== null) {
+			$this->functionReflections[$lowerCasedFunctionName] = $nativeFunctionReflection;
+			return $nativeFunctionReflection;
+		}
+
+		$this->functionReflections[$lowerCasedFunctionName] = $this->getCustomFunction($functionName);
+
+		return $this->functionReflections[$lowerCasedFunctionName];
+	}
+
+	private function getCustomFunction(string $functionName): PhpFunctionReflection
+	{
+		$reflectionFunction = new ReflectionFunction($this->reflector->reflectFunction($functionName));
+		$templateTypeMap = TemplateTypeMap::createEmpty();
+		$phpDocParameterTypes = [];
+		$phpDocReturnTag = null;
+		$phpDocThrowsTag = null;
+		$deprecatedTag = null;
+		$isDeprecated = false;
+		$isInternal = false;
+		$isPure = null;
+		$asserts = Assertions::createEmpty();
+		$acceptsNamedArguments = true;
+		$phpDocComment = null;
+		$phpDocParameterOutTags = [];
+		$phpDocParameterImmediatelyInvokedCallable = [];
+		$phpDocParameterClosureThisTypeTags = [];
+
+		$resolvedPhpDoc = $this->stubPhpDocProvider->findFunctionPhpDoc($reflectionFunction->getName(), array_map(static fn (ReflectionParameter $parameter): string => $parameter->getName(), $reflectionFunction->getParameters()));
+		if ($resolvedPhpDoc === null && $reflectionFunction->getFileName() !== false && $reflectionFunction->getDocComment() !== false) {
+			$docComment = $reflectionFunction->getDocComment();
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc($reflectionFunction->getFileName(), null, null, $reflectionFunction->getName(), $docComment);
+		}
+
+		if ($resolvedPhpDoc !== null) {
+			$templateTypeMap = $resolvedPhpDoc->getTemplateTypeMap();
+			$phpDocParameterTypes = array_map(static fn ($tag) => $tag->getType(), $resolvedPhpDoc->getParamTags());
+			$phpDocReturnTag = $resolvedPhpDoc->getReturnTag();
+			$phpDocThrowsTag = $resolvedPhpDoc->getThrowsTag();
+			$deprecatedTag = $resolvedPhpDoc->getDeprecatedTag();
+			$isDeprecated = $resolvedPhpDoc->isDeprecated();
+			$isInternal = $resolvedPhpDoc->isInternal();
+			$isPure = $resolvedPhpDoc->isPure();
+			$asserts = Assertions::createFromResolvedPhpDocBlock($resolvedPhpDoc);
+			if ($resolvedPhpDoc->hasPhpDocString()) {
+				$phpDocComment = $resolvedPhpDoc->getPhpDocString();
+			}
+			$acceptsNamedArguments = $resolvedPhpDoc->acceptsNamedArguments();
+			$phpDocParameterOutTags = $resolvedPhpDoc->getParamOutTags();
+			$phpDocParameterImmediatelyInvokedCallable = $resolvedPhpDoc->getParamsImmediatelyInvokedCallable();
+			$phpDocParameterClosureThisTypeTags = $resolvedPhpDoc->getParamClosureThisTags();
+		}
+
+		return $this->functionReflectionFactory->create(
+			$reflectionFunction,
+			$templateTypeMap,
+			$phpDocParameterTypes,
+			$phpDocReturnTag !== null ? $phpDocReturnTag->getType() : null,
+			$phpDocThrowsTag !== null ? $phpDocThrowsTag->getType() : null,
+			$deprecatedTag !== null ? $deprecatedTag->getMessage() : null,
+			$isDeprecated,
+			$isInternal,
+			$reflectionFunction->getFileName() !== false ? $reflectionFunction->getFileName() : null,
+			$isPure,
+			$asserts,
+			$acceptsNamedArguments,
+			$phpDocComment,
+			array_map(static fn (ParamOutTag $paramOutTag): Type => $paramOutTag->getType(), $phpDocParameterOutTags),
+			$phpDocParameterImmediatelyInvokedCallable,
+			array_map(static fn (ParamClosureThisTag $tag): Type => $tag->getType(), $phpDocParameterClosureThisTypeTags),
+			$this->attributeReflectionFactory->fromNativeReflection($reflectionFunction->getAttributes(), InitializerExprContext::fromFunction($reflectionFunction->getName(), $reflectionFunction->getFileName() !== false ? $reflectionFunction->getFileName() : null)),
+		);
+	}
+
+	public function resolveFunctionName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		$name = $nameNode->toLowerString();
+		if (in_array($name, ['exit', 'die'], true)) {
+			return $name;
+		}
+
+		return $this->resolveName($nameNode, function (string $name): bool {
+			try {
+				$this->reflector->reflectFunction($name);
+				return true;
+			} catch (IdentifierNotFound) {
+				// pass
+			} catch (InvalidIdentifierName) {
+				// pass
+			}
+
+			if ($this->nativeFunctionReflectionProvider->findFunctionReflection($name) !== null) {
+				return $this->phpstormStubsSourceStubber->isPresentFunction($name) !== false;
+			}
+			return false;
+		}, $namespaceAnswerer);
+	}
+
+	public function hasConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return $this->resolveConstantName($nameNode, $namespaceAnswerer) !== null;
+	}
+
+	public function getConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ConstantReflection
+	{
+		$constantName = $this->resolveConstantName($nameNode, $namespaceAnswerer);
+		if ($constantName === null) {
+			throw new ConstantNotFoundException((string) $nameNode);
+		}
+
+		if (array_key_exists($constantName, $this->cachedConstants)) {
+			return $this->cachedConstants[$constantName];
+		}
+
+		$constantReflection = $this->reflector->reflectConstant($constantName);
+		$fileName = $constantReflection->getFileName();
+		$constantValueType = $this->initializerExprTypeResolver->getType($constantReflection->getValueExpression(), InitializerExprContext::fromGlobalConstant($constantReflection));
+		$docComment = $constantReflection->getDocComment();
+
+		$isDeprecated = TrinaryLogic::createNo();
+		$deprecatedDescription = null;
+		if ($docComment !== null) {
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc($fileName, null, null, null, $docComment);
+			$isDeprecated = TrinaryLogic::createFromBoolean($resolvedPhpDoc->isDeprecated());
+
+			if ($resolvedPhpDoc->isDeprecated() && $resolvedPhpDoc->getDeprecatedTag() !== null) {
+				$deprecatedMessage = $resolvedPhpDoc->getDeprecatedTag()->getMessage();
+
+				$matches = Strings::match($deprecatedMessage ?? '', '#^(\d+)\.(\d+)(?:\.(\d+))?$#');
+				if ($matches !== null) {
+					$major = $matches[1];
+					$minor = $matches[2];
+					$patch = $matches[3] ?? 0;
+					$versionId = sprintf('%d%02d%02d', $major, $minor, $patch);
+
+					$isDeprecated = TrinaryLogic::createFromBoolean($this->phpVersion->getVersionId() >= $versionId);
+				} else {
+					// filter raw version number messages like in
+					// https://github.com/JetBrains/phpstorm-stubs/blob/9608c953230b08f07b703ecfe459cc58d5421437/filter/filter.php#L478
+					$deprecatedDescription = $deprecatedMessage;
+				}
+			}
+		}
+
+		return $this->cachedConstants[$constantName] = new RuntimeConstantReflection(
+			$constantName,
+			$constantValueType,
+			$fileName,
+			$isDeprecated,
+			$deprecatedDescription,
+		);
+	}
+
+	public function resolveConstantName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		return $this->resolveName($nameNode, function (string $name): bool {
+			try {
+				$this->reflector->reflectConstant($name);
+				return true;
+			} catch (IdentifierNotFound) {
+				// pass
+			} catch (UnableToCompileNode) {
+				// pass
+			}
+			return false;
+		}, $namespaceAnswerer);
+	}
+
+	/**
+	 * @param Closure(string $name): bool $existsCallback
+	 */
+	private function resolveName(
+		Node\Name $nameNode,
+		Closure $existsCallback,
+		?NamespaceAnswerer $namespaceAnswerer,
+	): ?string
+	{
+		$name = (string) $nameNode;
+		if ($namespaceAnswerer !== null && $namespaceAnswerer->getNamespace() !== null && !$nameNode->isFullyQualified()) {
+			$namespacedName = sprintf('%s\\%s', $namespaceAnswerer->getNamespace(), $name);
+			if ($existsCallback($namespacedName)) {
+				return $namespacedName;
+			}
+		}
+
+		if ($existsCallback($name)) {
+			return $name;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/BetterReflectionProviderFactory.php b/src/Reflection/BetterReflection/BetterReflectionProviderFactory.php
new file mode 100644
index 00000000..1ff614e8
--- /dev/null
+++ b/src/Reflection/BetterReflection/BetterReflectionProviderFactory.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection;
+return;
+
+use PHPStan\BetterReflection\Reflector\Reflector;
+
+interface BetterReflectionProviderFactory
+{
+
+	public function create(
+		Reflector $reflector,
+	): BetterReflectionProvider;
+
+}
diff --git a/src/Reflection/BetterReflection/BetterReflectionSourceLocatorFactory.php b/src/Reflection/BetterReflection/BetterReflectionSourceLocatorFactory.php
new file mode 100644
index 00000000..ddbf1097
--- /dev/null
+++ b/src/Reflection/BetterReflection/BetterReflectionSourceLocatorFactory.php
@@ -0,0 +1,141 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection;
+return;
+
+use Phar;
+use PhpParser\Parser;
+use PHPStan\BetterReflection\SourceLocator\Ast\Locator;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\ReflectionSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\AggregateSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\Psr4Mapping;
+use PHPStan\BetterReflection\SourceLocator\Type\EvaledCodeSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\MemoizingSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\PhpInternalSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\AutoloadFunctionsSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\AutoloadSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\ComposerJsonAndInstalledJsonSourceLocatorMaker;
+use PHPStan\Reflection\BetterReflection\SourceLocator\FileNodesFetcher;
+use PHPStan\Reflection\BetterReflection\SourceLocator\OptimizedDirectorySourceLocatorRepository;
+use PHPStan\Reflection\BetterReflection\SourceLocator\OptimizedPsrAutoloaderLocatorFactory;
+use PHPStan\Reflection\BetterReflection\SourceLocator\OptimizedSingleFileSourceLocatorRepository;
+use PHPStan\Reflection\BetterReflection\SourceLocator\PhpVersionBlacklistSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\ReflectionClassSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\RewriteClassAliasSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\SkipClassAliasSourceLocator;
+use function array_merge;
+use function array_unique;
+use function extension_loaded;
+use function is_dir;
+use function is_file;
+
+final class BetterReflectionSourceLocatorFactory
+{
+
+	/**
+	 * @param string[] $scanFiles
+	 * @param string[] $scanDirectories
+	 * @param string[] $analysedPaths
+	 * @param string[] $composerAutoloaderProjectPaths
+	 * @param string[] $analysedPathsFromConfig
+	 */
+	public function __construct(
+		private Parser $parser,
+		private Parser $php8Parser,
+		private PhpStormStubsSourceStubber $phpstormStubsSourceStubber,
+		private ReflectionSourceStubber $reflectionSourceStubber,
+		private OptimizedSingleFileSourceLocatorRepository $optimizedSingleFileSourceLocatorRepository,
+		private OptimizedDirectorySourceLocatorRepository $optimizedDirectorySourceLocatorRepository,
+		private ComposerJsonAndInstalledJsonSourceLocatorMaker $composerJsonAndInstalledJsonSourceLocatorMaker,
+		private OptimizedPsrAutoloaderLocatorFactory $optimizedPsrAutoloaderLocatorFactory,
+		private FileNodesFetcher $fileNodesFetcher,
+		private array $scanFiles,
+		private array $scanDirectories,
+		private array $analysedPaths,
+		private array $composerAutoloaderProjectPaths,
+		private array $analysedPathsFromConfig,
+		private bool $playgroundMode, // makes all PHPStan classes in the PHAR discoverable with PSR-4
+	)
+	{
+	}
+
+	public function create(): SourceLocator
+	{
+		$locators = [];
+
+		$astLocator = new Locator($this->parser);
+		$locators[] = new AutoloadFunctionsSourceLocator(
+			new AutoloadSourceLocator($this->fileNodesFetcher, false),
+			new ReflectionClassSourceLocator(
+				$astLocator,
+				$this->reflectionSourceStubber,
+			),
+		);
+
+		$analysedDirectories = [];
+		$analysedFiles = [];
+
+		foreach (array_merge($this->analysedPaths, $this->analysedPathsFromConfig) as $analysedPath) {
+			if (is_file($analysedPath)) {
+				$analysedFiles[] = $analysedPath;
+				continue;
+			}
+
+			if (!is_dir($analysedPath)) {
+				continue;
+			}
+
+			$analysedDirectories[] = $analysedPath;
+		}
+
+		$fileLocators = [];
+		$analysedFiles = array_unique(array_merge($analysedFiles, $this->scanFiles));
+		foreach ($analysedFiles as $analysedFile) {
+			$fileLocators[] = $this->optimizedSingleFileSourceLocatorRepository->getOrCreate($analysedFile);
+		}
+
+		$directories = array_unique(array_merge($analysedDirectories, $this->scanDirectories));
+		foreach ($directories as $directory) {
+			$fileLocators[] = $this->optimizedDirectorySourceLocatorRepository->getOrCreate($directory);
+		}
+
+		$astPhp8Locator = new Locator($this->php8Parser);
+
+		foreach ($this->composerAutoloaderProjectPaths as $composerAutoloaderProjectPath) {
+			$locator = $this->composerJsonAndInstalledJsonSourceLocatorMaker->create($composerAutoloaderProjectPath);
+			if ($locator === null) {
+				continue;
+			}
+			$fileLocators[] = $locator;
+		}
+
+		if (extension_loaded('phar')) {
+			$pharProtocolPath = Phar::running();
+			if ($pharProtocolPath !== '') {
+				$mappings = [
+					'PHPStan\\BetterReflection\\' => [$pharProtocolPath . '/vendor/ondrejmirtes/better-reflection/src/'],
+				];
+				if ($this->playgroundMode) {
+					$mappings['PHPStan\\'] = [$pharProtocolPath . '/src/'];
+				} else {
+					$mappings['PHPStan\\Testing\\'] = [$pharProtocolPath . '/src/Testing/'];
+				}
+				$fileLocators[] = $this->optimizedPsrAutoloaderLocatorFactory->create(
+					Psr4Mapping::fromArrayMappings($mappings),
+				);
+			}
+		}
+
+		$locators[] = new RewriteClassAliasSourceLocator(new AggregateSourceLocator($fileLocators));
+		$locators[] = new SkipClassAliasSourceLocator(new PhpInternalSourceLocator($astPhp8Locator, $this->phpstormStubsSourceStubber));
+
+		$locators[] = new AutoloadSourceLocator($this->fileNodesFetcher, true);
+		$locators[] = new PhpVersionBlacklistSourceLocator(new PhpInternalSourceLocator($astLocator, $this->reflectionSourceStubber), $this->phpstormStubsSourceStubber);
+		$locators[] = new PhpVersionBlacklistSourceLocator(new EvaledCodeSourceLocator($astLocator, $this->reflectionSourceStubber), $this->phpstormStubsSourceStubber);
+
+		return new MemoizingSourceLocator(new AggregateSourceLocator($locators));
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/Reflector/MemoizingReflector.php b/src/Reflection/BetterReflection/Reflector/MemoizingReflector.php
new file mode 100644
index 00000000..2e34bb2f
--- /dev/null
+++ b/src/Reflection/BetterReflection/Reflector/MemoizingReflector.php
@@ -0,0 +1,112 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\Reflector;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\ReflectionConstant;
+use PHPStan\BetterReflection\Reflection\ReflectionFunction;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use function array_key_exists;
+use function strtolower;
+
+final class MemoizingReflector implements Reflector
+{
+
+	/** @var array<string, ReflectionClass|null> */
+	private array $classReflections = [];
+
+	/** @var array<string, ReflectionConstant|null> */
+	private array $constantReflections = [];
+
+	/** @var array<string, ReflectionFunction|null> */
+	private array $functionReflections = [];
+
+	public function __construct(private Reflector $reflector)
+	{
+	}
+
+	public function reflectClass(string $className): ReflectionClass
+	{
+		$lowerClassName = strtolower($className);
+		if (array_key_exists($lowerClassName, $this->classReflections) && $this->classReflections[$lowerClassName] !== null) {
+			return $this->classReflections[$lowerClassName];
+		}
+		if (array_key_exists($className, $this->classReflections)) {
+			$classReflection = $this->classReflections[$className];
+			if ($classReflection === null) {
+				throw IdentifierNotFound::fromIdentifier(new Identifier($className, new IdentifierType(IdentifierType::IDENTIFIER_CLASS)));
+			}
+
+			return $classReflection;
+		}
+
+		try {
+			return $this->classReflections[$lowerClassName] = $this->reflector->reflectClass($className);
+		} catch (IdentifierNotFound $e) {
+			$this->classReflections[$className] = null;
+
+			throw $e;
+		}
+	}
+
+	public function reflectConstant(string $constantName): ReflectionConstant
+	{
+		if (array_key_exists($constantName, $this->constantReflections)) {
+			$constantReflection = $this->constantReflections[$constantName];
+			if ($constantReflection === null) {
+				throw IdentifierNotFound::fromIdentifier(new Identifier($constantName, new IdentifierType(IdentifierType::IDENTIFIER_CONSTANT)));
+			}
+
+			return $constantReflection;
+		}
+
+		try {
+			return $this->constantReflections[$constantName] = $this->reflector->reflectConstant($constantName);
+		} catch (IdentifierNotFound $e) {
+			$this->constantReflections[$constantName] = null;
+
+			throw $e;
+		}
+	}
+
+	public function reflectFunction(string $functionName): ReflectionFunction
+	{
+		$lowerFunctionName = strtolower($functionName);
+		if (array_key_exists($lowerFunctionName, $this->functionReflections)) {
+			$functionReflection = $this->functionReflections[$lowerFunctionName];
+			if ($functionReflection === null) {
+				throw IdentifierNotFound::fromIdentifier(new Identifier($functionName, new IdentifierType(IdentifierType::IDENTIFIER_FUNCTION)));
+			}
+
+			return $functionReflection;
+		}
+
+		try {
+			return $this->functionReflections[$lowerFunctionName] = $this->reflector->reflectFunction($functionName);
+		} catch (IdentifierNotFound $e) {
+			$this->functionReflections[$lowerFunctionName] = null;
+
+			throw $e;
+		}
+	}
+
+	public function reflectAllClasses(): iterable
+	{
+		return $this->reflector->reflectAllClasses();
+	}
+
+	public function reflectAllFunctions(): iterable
+	{
+		return $this->reflector->reflectAllFunctions();
+	}
+
+	public function reflectAllConstants(): iterable
+	{
+		return $this->reflector->reflectAllConstants();
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/AutoloadFunctionsSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/AutoloadFunctionsSourceLocator.php
new file mode 100644
index 00000000..6b1fcb31
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/AutoloadFunctionsSourceLocator.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use function class_exists;
+use function interface_exists;
+use function PHPStan\autoloadFunctions;
+use function trait_exists;
+
+final class AutoloadFunctionsSourceLocator implements SourceLocator
+{
+
+	public function __construct(
+		private AutoloadSourceLocator $autoloadSourceLocator,
+		private ReflectionClassSourceLocator $reflectionClassSourceLocator,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if (!$identifier->isClass()) {
+			return null;
+		}
+
+		$className = $identifier->getName();
+		if (class_exists($className, false) || interface_exists($className, false) || trait_exists($className, false)) {
+			return null;
+		}
+
+		$autoloadFunctions = autoloadFunctions();
+		foreach ($autoloadFunctions as $autoloadFunction) {
+			$autoloadFunction($className);
+			$reflection = $this->autoloadSourceLocator->locateIdentifier($reflector, $identifier);
+			if ($reflection !== null) {
+				return $reflection;
+			}
+
+			$reflection = $this->reflectionClassSourceLocator->locateIdentifier($reflector, $identifier);
+			if ($reflection !== null) {
+				return $reflection;
+			}
+		}
+
+		return null;
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/AutoloadSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/AutoloadSourceLocator.php
new file mode 100644
index 00000000..eb401317
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/AutoloadSourceLocator.php
@@ -0,0 +1,383 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\Const_;
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflection\ReflectionConstant;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Reflection\ConstantNameHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ConstantTypeHelper;
+use ReflectionClass;
+use ReflectionFunction;
+use function array_key_exists;
+use function array_keys;
+use function class_exists;
+use function constant;
+use function count;
+use function defined;
+use function function_exists;
+use function interface_exists;
+use function is_file;
+use function is_string;
+use function opcache_invalidate;
+use function restore_error_handler;
+use function set_error_handler;
+use function spl_autoload_functions;
+use function strtolower;
+use function trait_exists;
+use const PHP_VERSION_ID;
+
+/**
+ * Use PHP's built in autoloader to locate a class, without actually loading.
+ *
+ * There are some prerequisites...
+ *   - we expect the autoloader to load classes from a file (i.e. using require/include)
+ *
+ * Modified code from Roave/BetterReflection, Copyright (c) 2017 Roave, LLC.
+ */
+final class AutoloadSourceLocator implements SourceLocator
+{
+
+	/** @var array{classes: array<string, string>, functions: array<string, string>, constants: array<string, string>} */
+	private array $presentSymbols = [
+		'classes' => [],
+		'functions' => [],
+		'constants' => [],
+	];
+
+	/** @var array<string, true> */
+	private array $scannedFiles = [];
+
+	/** @var array<string, int> */
+	private array $startLineByClass = [];
+
+	public function __construct(private FileNodesFetcher $fileNodesFetcher, private bool $executeAutoloadersInFileReadTrap)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if ($identifier->isFunction()) {
+			$functionName = $identifier->getName();
+			$loweredFunctionName = strtolower($functionName);
+			if (array_key_exists($loweredFunctionName, $this->presentSymbols['functions'])) {
+				return $this->findReflection($reflector, $this->presentSymbols['functions'][$loweredFunctionName], $identifier, null);
+			}
+			if (!function_exists($functionName)) {
+				return null;
+			}
+
+			$reflection = new ReflectionFunction($functionName);
+			$reflectionFileName = $reflection->getFileName();
+
+			if (!is_string($reflectionFileName)) {
+				return null;
+			}
+			if (!is_file($reflectionFileName)) {
+				return null;
+			}
+
+			return $this->findReflection($reflector, $reflectionFileName, $identifier, null);
+		}
+
+		if ($identifier->isConstant()) {
+			$constantName = ConstantNameHelper::normalize($identifier->getName());
+			if (array_key_exists($constantName, $this->presentSymbols['constants'])) {
+				return $this->findReflection($reflector, $this->presentSymbols['constants'][$constantName], $identifier, null);
+			}
+
+			if (!defined($constantName)) {
+				return null;
+			}
+
+			$constantValue = @constant($constantName);
+			return ReflectionConstant::createFromNode(
+				$reflector,
+				new FuncCall(new Name('define'), [
+					new Arg(new String_($constantName)),
+					new Arg(new TypeExpr(ConstantTypeHelper::getTypeFromValue($constantValue))),
+				], [
+					'startLine' => 1,
+					'endLine' => 1,
+					'startFilePos' => 1,
+					'endFilePos' => 4,
+				]),
+				new LocatedSource('<?php', $constantName, null),
+				null,
+				null,
+			);
+		}
+
+		if (!$identifier->isClass()) {
+			return null;
+		}
+
+		$loweredClassName = strtolower($identifier->getName());
+		if (array_key_exists($loweredClassName, $this->presentSymbols['classes'])) {
+			$startLine = null;
+			if (array_key_exists($loweredClassName, $this->startLineByClass)) {
+				$startLine = $this->startLineByClass[$loweredClassName];
+			} else {
+				$reflection = $this->getReflectionClass($identifier->getName());
+				if (
+					$reflection !== null
+					&& $reflection->getStartLine() !== false
+					&& is_string($reflection->getFileName())
+					&& is_file($reflection->getFileName())
+					&& $reflection->getFileName() === $this->presentSymbols['classes'][$loweredClassName]
+				) {
+					$startLine = $reflection->getStartLine();
+				}
+			}
+			return $this->findReflection($reflector, $this->presentSymbols['classes'][$loweredClassName], $identifier, $startLine);
+		}
+		$locateResult = $this->locateClassByName($identifier->getName());
+		if ($locateResult === null) {
+			return null;
+		}
+		[$potentiallyLocatedFiles, $className, $startLine] = $locateResult;
+		if ($startLine !== null) {
+			$this->startLineByClass[strtolower($className)] = $startLine;
+		}
+
+		$newIdentifier = new Identifier($className, $identifier->getType());
+
+		foreach ($potentiallyLocatedFiles as $potentiallyLocatedFile) {
+			$reflection = $this->findReflection($reflector, $potentiallyLocatedFile, $newIdentifier, $startLine);
+			if ($reflection === null) {
+				continue;
+			}
+
+			return $reflection;
+		}
+
+		return null;
+	}
+
+	private function findReflection(Reflector $reflector, string $file, Identifier $identifier, ?int $startLine): ?Reflection
+	{
+		$result = $this->fileNodesFetcher->fetchNodes($file);
+		if (!array_key_exists($file, $this->scannedFiles)) {
+			foreach (array_keys($result->getClassNodes()) as $className) {
+				if (array_key_exists($className, $this->presentSymbols['classes'])) {
+					continue;
+				}
+				$this->presentSymbols['classes'][$className] = $file;
+			}
+			foreach (array_keys($result->getFunctionNodes()) as $functionName) {
+				if (array_key_exists($functionName, $this->presentSymbols['functions'])) {
+					continue;
+				}
+				$this->presentSymbols['functions'][$functionName] = $file;
+			}
+			foreach (array_keys($result->getConstantNodes()) as $constantName) {
+				if (array_key_exists($constantName, $this->presentSymbols['constants'])) {
+					continue;
+				}
+				$this->presentSymbols['constants'][$constantName] = $file;
+			}
+			$this->scannedFiles[$file] = true;
+		}
+
+		$nodeToReflection = new NodeToReflection();
+		if ($identifier->isClass()) {
+			$identifierName = strtolower($identifier->getName());
+			if (!array_key_exists($identifierName, $result->getClassNodes())) {
+				return null;
+			}
+
+			$classNodesCount = count($result->getClassNodes()[$identifierName]);
+			foreach ($result->getClassNodes()[$identifierName] as $classNode) {
+				if ($classNodesCount > 1 && $startLine !== null) {
+					if (count($classNode->getNode()->attrGroups) > 0 && PHP_VERSION_ID < 80000) {
+						$startLine--;
+					}
+					if ($startLine !== $classNode->getNode()->getStartLine()) {
+						continue;
+					}
+				}
+
+				return $nodeToReflection->__invoke(
+					$reflector,
+					$classNode->getNode(),
+					$classNode->getLocatedSource(),
+					$classNode->getNamespace(),
+				);
+			}
+
+			return null;
+		}
+		if ($identifier->isFunction()) {
+			$identifierName = strtolower($identifier->getName());
+			if (!array_key_exists($identifierName, $result->getFunctionNodes())) {
+				return null;
+			}
+
+			foreach ($result->getFunctionNodes()[$identifierName] as $functionNode) {
+				return $nodeToReflection->__invoke(
+					$reflector,
+					$functionNode->getNode(),
+					$functionNode->getLocatedSource(),
+					$functionNode->getNamespace(),
+				);
+			}
+		}
+
+		if ($identifier->isConstant()) {
+			$identifierName = ConstantNameHelper::normalize($identifier->getName());
+			$constantNodes = $result->getConstantNodes();
+
+			if (!array_key_exists($identifierName, $constantNodes)) {
+				return null;
+			}
+
+			foreach ($constantNodes[$identifierName] as $fetchedConstantNode) {
+				$constantNode = $fetchedConstantNode->getNode();
+
+				$positionInNode = null;
+				if ($constantNode instanceof Const_) {
+					foreach ($constantNode->consts as $constPosition => $const) {
+						if ($const->namespacedName === null) {
+							throw new ShouldNotHappenException();
+						}
+
+						if (ConstantNameHelper::normalize($const->namespacedName->toString()) === $identifierName) {
+							/** @var int $positionInNode */
+							$positionInNode = $constPosition;
+							break;
+						}
+					}
+
+					if ($positionInNode === null) {
+						throw new ShouldNotHappenException();
+					}
+				}
+
+				return $nodeToReflection->__invoke(
+					$reflector,
+					$constantNode,
+					$fetchedConstantNode->getLocatedSource(),
+					$fetchedConstantNode->getNamespace(),
+					$positionInNode,
+				);
+			}
+		}
+
+		return null;
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return [];
+	}
+
+	/**
+	 * @return ReflectionClass<object>|null
+	 */
+	private function getReflectionClass(string $className): ?ReflectionClass
+	{
+		if (class_exists($className, false) || interface_exists($className, false) || trait_exists($className, false)) {
+			return new ReflectionClass($className);
+		}
+
+		return null;
+	}
+
+	/**
+	 * Attempt to locate a class by name.
+	 *
+	 * If class already exists, simply use internal reflection API to get the
+	 * filename and store it.
+	 *
+	 * If class does not exist, we make an assumption that whatever autoloaders
+	 * that are registered will be loading a file. We then override the file://
+	 * protocol stream wrapper to "capture" the filename we expect the class to
+	 * be in, and then restore it. Note that class_exists will cause an error
+	 * that it cannot find the file, so we squelch the errors by overriding the
+	 * error handler temporarily.
+	 *
+	 * @return array{string[], string, int|null}|null
+	 */
+	private function locateClassByName(string $className): ?array
+	{
+		$reflection = $this->getReflectionClass($className);
+		if ($reflection !== null) {
+			$filename = $reflection->getFileName();
+			if (!is_string($filename)) {
+				return null;
+			}
+			if (!is_file($filename)) {
+				return null;
+			}
+
+			return [[$filename], $reflection->getName(), $reflection->getStartLine() !== false ? $reflection->getStartLine() : null];
+		}
+
+		if (!$this->executeAutoloadersInFileReadTrap) {
+			return null;
+		}
+
+		$this->silenceErrors();
+
+		try {
+			$result = FileReadTrapStreamWrapper::withStreamWrapperOverride(
+				static function () use ($className): ?array {
+					$functions = spl_autoload_functions();
+					if ($functions === false) {
+						return null;
+					}
+
+					foreach ($functions as $preExistingAutoloader) {
+						$preExistingAutoloader($className);
+
+						/**
+						 * This static variable is populated by the side-effect of the stream wrapper
+						 * trying to read the file path when `include()` is used by an autoloader.
+						 *
+						 * This will not be `null` when the autoloader tried to read a file.
+						 */
+						if (FileReadTrapStreamWrapper::$autoloadLocatedFiles !== []) {
+							return [FileReadTrapStreamWrapper::$autoloadLocatedFiles, $className, null];
+						}
+					}
+
+					return null;
+				},
+			);
+			if ($result === null) {
+				return null;
+			}
+
+			if (!function_exists('opcache_invalidate')) {
+				return $result;
+			}
+
+			foreach ($result[0] as $file) {
+				opcache_invalidate($file, true);
+			}
+
+			return $result;
+		} finally {
+			restore_error_handler();
+		}
+	}
+
+	private function silenceErrors(): void
+	{
+		set_error_handler(static fn (): bool => true);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/CachingVisitor.php b/src/Reflection/BetterReflection/SourceLocator/CachingVisitor.php
new file mode 100644
index 00000000..b5f00635
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/CachingVisitor.php
@@ -0,0 +1,157 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Namespace_;
+use PhpParser\NodeVisitor;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\BetterReflection\Reflection\Exception\InvalidConstantNode;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\BetterReflection\Util\ConstantNodeChecker;
+use PHPStan\Reflection\ConstantNameHelper;
+use function strtolower;
+
+final class CachingVisitor extends NodeVisitorAbstract
+{
+
+	private string $fileName;
+
+	private string $contents;
+
+	/** @var array<string, array<FetchedNode<Node\Stmt\ClassLike>>> */
+	private array $classNodes;
+
+	/** @var array<string, array<FetchedNode<Node\Stmt\Function_>>> */
+	private array $functionNodes;
+
+	/** @var array<string, array<FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall>>> */
+	private array $constantNodes;
+
+	private ?Node\Stmt\Namespace_ $currentNamespaceNode = null;
+
+	public function enterNode(Node $node): ?int
+	{
+		if ($node instanceof Namespace_) {
+			$this->currentNamespaceNode = $node;
+
+			return null;
+		}
+
+		if ($node instanceof Node\Stmt\ClassLike) {
+			if ($node->name !== null) {
+				$fullClassName = $node->name->toString();
+				if ($this->currentNamespaceNode !== null && $this->currentNamespaceNode->name !== null) {
+					$fullClassName = $this->currentNamespaceNode->name . '\\' . $fullClassName;
+				}
+				$this->classNodes[strtolower($fullClassName)][] = new FetchedNode(
+					$node,
+					$this->currentNamespaceNode,
+					new LocatedSource($this->contents, $fullClassName, $this->fileName),
+				);
+			}
+
+			return NodeVisitor::DONT_TRAVERSE_CHILDREN;
+		}
+
+		if ($node instanceof Node\Stmt\Function_) {
+			if ($node->namespacedName !== null) {
+				$functionName = $node->namespacedName->toString();
+				$this->functionNodes[strtolower($functionName)][] = new FetchedNode(
+					$node,
+					$this->currentNamespaceNode,
+					new LocatedSource($this->contents, $functionName, $this->fileName),
+				);
+			}
+
+			return NodeVisitor::DONT_TRAVERSE_CHILDREN;
+		}
+
+		if ($node instanceof Node\Stmt\Const_) {
+			foreach ($node->consts as $const) {
+				if ($const->namespacedName === null) {
+					continue;
+				}
+
+				$this->constantNodes[ConstantNameHelper::normalize($const->namespacedName->toString())][] = new FetchedNode(
+					$node,
+					$this->currentNamespaceNode,
+					new LocatedSource($this->contents, null, $this->fileName),
+				);
+			}
+
+			return NodeVisitor::DONT_TRAVERSE_CHILDREN;
+		}
+
+		if ($node instanceof Node\Expr\FuncCall) {
+			try {
+				ConstantNodeChecker::assertValidDefineFunctionCall($node);
+			} catch (InvalidConstantNode) {
+				return null;
+			}
+
+			/** @var Node\Scalar\String_ $nameNode */
+			$nameNode = $node->getArgs()[0]->value;
+			$constantName = $nameNode->value;
+
+			$constantNode = new FetchedNode(
+				$node,
+				$this->currentNamespaceNode,
+				new LocatedSource($this->contents, $constantName, $this->fileName),
+			);
+			$this->constantNodes[ConstantNameHelper::normalize($constantName)][] = $constantNode;
+
+			return NodeVisitor::DONT_TRAVERSE_CHILDREN;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return null
+	 */
+	public function leaveNode(Node $node)
+	{
+		if (!$node instanceof Namespace_) {
+			return null;
+		}
+
+		$this->currentNamespaceNode = null;
+		return null;
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\ClassLike>>>
+	 */
+	public function getClassNodes(): array
+	{
+		return $this->classNodes;
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\Function_>>>
+	 */
+	public function getFunctionNodes(): array
+	{
+		return $this->functionNodes;
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall>>>
+	 */
+	public function getConstantNodes(): array
+	{
+		return $this->constantNodes;
+	}
+
+	public function reset(string $fileName, string $contents): void
+	{
+		$this->classNodes = [];
+		$this->functionNodes = [];
+		$this->constantNodes = [];
+		$this->fileName = $fileName;
+		$this->contents = $contents;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/ComposerJsonAndInstalledJsonSourceLocatorMaker.php b/src/Reflection/BetterReflection/SourceLocator/ComposerJsonAndInstalledJsonSourceLocatorMaker.php
new file mode 100644
index 00000000..12f73657
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/ComposerJsonAndInstalledJsonSourceLocatorMaker.php
@@ -0,0 +1,259 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PHPStan\BetterReflection\SourceLocator\Type\AggregateSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\Psr0Mapping;
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\Psr4Mapping;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\FileReader;
+use PHPStan\Internal\ComposerHelper;
+use PHPStan\Php\PhpVersion;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function array_merge_recursive;
+use function array_reverse;
+use function count;
+use function dirname;
+use function glob;
+use function is_dir;
+use function is_file;
+use function str_contains;
+use const GLOB_ONLYDIR;
+
+final class ComposerJsonAndInstalledJsonSourceLocatorMaker
+{
+
+	public function __construct(
+		private OptimizedDirectorySourceLocatorRepository $optimizedDirectorySourceLocatorRepository,
+		private OptimizedPsrAutoloaderLocatorFactory $optimizedPsrAutoloaderLocatorFactory,
+		private OptimizedDirectorySourceLocatorFactory $optimizedDirectorySourceLocatorFactory,
+		private PhpVersion $phpVersion,
+	)
+	{
+	}
+
+	public function create(string $projectInstallationPath): ?SourceLocator
+	{
+		$composer = ComposerHelper::getComposerConfig($projectInstallationPath);
+
+		if ($composer === null) {
+			return null;
+		}
+
+		$vendorDirectory = ComposerHelper::getVendorDirFromComposerConfig($projectInstallationPath, $composer);
+
+		$installedJsonPath = $vendorDirectory . '/composer/installed.json';
+		if (!is_file($installedJsonPath)) {
+			return null;
+		}
+
+		$installedJsonDirectoryPath = dirname($installedJsonPath);
+
+		try {
+			$installedJsonContents = FileReader::read($installedJsonPath);
+			$installedJson = Json::decode($installedJsonContents, Json::FORCE_ARRAY);
+		} catch (CouldNotReadFileException | JsonException) {
+			return null;
+		}
+
+		$installed = $installedJson['packages'] ?? $installedJson;
+		$dev = (bool) ($installedJson['dev'] ?? true);
+
+		$classMapPaths = array_merge(
+			$this->prefixPaths($this->packageToClassMapPaths($composer), $projectInstallationPath . '/'),
+			$dev ? $this->prefixPaths($this->packageToClassMapPaths($composer, 'autoload-dev'), $projectInstallationPath . '/') : [],
+			...array_map(fn (array $package): array => $this->prefixPaths(
+				$this->packageToClassMapPaths($package),
+				$this->packagePrefixPath($installedJsonDirectoryPath, $package, $vendorDirectory),
+			), $installed),
+		);
+		$filePaths = array_merge(
+			$this->prefixPaths($this->packageToFilePaths($composer), $projectInstallationPath . '/'),
+			$dev ? $this->prefixPaths($this->packageToFilePaths($composer, 'autoload-dev'), $projectInstallationPath . '/') : [],
+			...array_map(fn (array $package): array => $this->prefixPaths(
+				$this->packageToFilePaths($package),
+				$this->packagePrefixPath($installedJsonDirectoryPath, $package, $vendorDirectory),
+			), $installed),
+		);
+
+		$locators = [];
+		$locators[] = $this->optimizedPsrAutoloaderLocatorFactory->create(
+			Psr4Mapping::fromArrayMappings(array_merge_recursive(
+				$this->prefixWithInstallationPath($this->packageToPsr4AutoloadNamespaces($composer), $projectInstallationPath),
+				$dev ? $this->prefixWithInstallationPath($this->packageToPsr4AutoloadNamespaces($composer, 'autoload-dev'), $projectInstallationPath) : [],
+				...array_map(fn (array $package): array => $this->prefixWithPackagePath(
+					$this->packageToPsr4AutoloadNamespaces($package),
+					$installedJsonDirectoryPath,
+					$package,
+					$vendorDirectory,
+				), $installed),
+			)),
+		);
+
+		$locators[] = $this->optimizedPsrAutoloaderLocatorFactory->create(
+			Psr0Mapping::fromArrayMappings(array_merge_recursive(
+				$this->prefixWithInstallationPath($this->packageToPsr0AutoloadNamespaces($composer), $projectInstallationPath),
+				$dev ? $this->prefixWithInstallationPath($this->packageToPsr0AutoloadNamespaces($composer, 'autoload-dev'), $projectInstallationPath) : [],
+				...array_map(fn (array $package): array => $this->prefixWithPackagePath(
+					$this->packageToPsr0AutoloadNamespaces($package),
+					$installedJsonDirectoryPath,
+					$package,
+					$vendorDirectory,
+				), $installed),
+			)),
+		);
+
+		$files = [];
+		foreach ($classMapPaths as $classMapPath) {
+			if (is_dir($classMapPath)) {
+				$locators[] = $this->optimizedDirectorySourceLocatorRepository->getOrCreate($classMapPath);
+				continue;
+			}
+			if (!is_file($classMapPath)) {
+				continue;
+			}
+			$files[] = $classMapPath;
+		}
+		foreach ($filePaths as $file) {
+			if (!is_file($file)) {
+				continue;
+			}
+			$files[] = $file;
+		}
+
+		if (count($files) > 0) {
+			$locators[] = $this->optimizedDirectorySourceLocatorFactory->createByFiles($files);
+		}
+
+		$binDir = ComposerHelper::getBinDirFromComposerConfig($projectInstallationPath, $composer);
+		$phpunitBridgeDir = $binDir . '/.phpunit';
+		if (!is_dir($vendorDirectory . '/phpunit/phpunit') && is_dir($phpunitBridgeDir)) {
+			// from https://github.com/composer/composer/blob/8ff237afb61b8766efa576b8ae1cc8560c8aed96/phpstan/locate-phpunit-autoloader.php
+			$bestDirFound = null;
+			$phpunitBridgeDirectories = glob($phpunitBridgeDir . '/phpunit-*', GLOB_ONLYDIR);
+			if ($phpunitBridgeDirectories !== false) {
+				foreach (array_reverse($phpunitBridgeDirectories) as $dir) {
+					$bestDirFound = $dir;
+					if ($this->phpVersion->getVersionId() >= 80100 && str_contains($dir, 'phpunit-10')) {
+						break;
+					}
+					if ($this->phpVersion->getVersionId() >= 80000) {
+						if (str_contains($dir, 'phpunit-9')) {
+							break;
+						}
+						continue;
+					}
+
+					if (str_contains($dir, 'phpunit-8') || str_contains($dir, 'phpunit-7')) {
+						break;
+					}
+				}
+
+				if ($bestDirFound !== null) {
+					$phpunitBridgeLocator = $this->create($bestDirFound);
+					if ($phpunitBridgeLocator !== null) {
+						$locators[] = $phpunitBridgeLocator;
+					}
+				}
+			}
+		}
+
+		return new AggregateSourceLocator($locators);
+	}
+
+	/**
+	 * @param mixed[] $package
+	 *
+	 * @return array<string, array<int, string>>
+	 */
+	private function packageToPsr4AutoloadNamespaces(array $package, string $autoloadSection = 'autoload'): array
+	{
+		return array_map(static fn ($namespacePaths): array => (array) $namespacePaths, $package[$autoloadSection]['psr-4'] ?? []);
+	}
+
+	/**
+	 * @param mixed[] $package
+	 *
+	 * @return array<string, array<int, string>>
+	 */
+	private function packageToPsr0AutoloadNamespaces(array $package, string $autoloadSection = 'autoload'): array
+	{
+		return array_map(static fn ($namespacePaths): array => (array) $namespacePaths, $package[$autoloadSection]['psr-0'] ?? []);
+	}
+
+	/**
+	 * @param mixed[] $package
+	 *
+	 * @return array<int, string>
+	 */
+	private function packageToClassMapPaths(array $package, string $autoloadSection = 'autoload'): array
+	{
+		return $package[$autoloadSection]['classmap'] ?? [];
+	}
+
+	/**
+	 * @param mixed[] $package
+	 *
+	 * @return array<int, string>
+	 */
+	private function packageToFilePaths(array $package, string $autoloadSection = 'autoload'): array
+	{
+		return $package[$autoloadSection]['files'] ?? [];
+	}
+
+	/**
+	 * @param mixed[] $package
+	 */
+	private function packagePrefixPath(
+		string $installedJsonDirectoryPath,
+		array $package,
+		string $vendorDirectory,
+	): string
+	{
+		if (array_key_exists('install-path', $package)) {
+			return $installedJsonDirectoryPath . '/' . $package['install-path'] . '/';
+		}
+
+		return $vendorDirectory . '/' . $package['name'] . '/';
+	}
+
+	/**
+	 * @param array<string, array<int, string>> $paths
+	 * @param array<string, array<int, string>> $package
+	 *
+	 * @return array<string, array<int, string>>
+	 */
+	private function prefixWithPackagePath(array $paths, string $installedJsonDirectoryPath, array $package, string $vendorDirectory): array
+	{
+		$prefix = $this->packagePrefixPath($installedJsonDirectoryPath, $package, $vendorDirectory);
+
+		return array_map(fn (array $paths): array => $this->prefixPaths($paths, $prefix), $paths);
+	}
+
+	/**
+	 * @param array<int|string, array<string>> $paths
+	 *
+	 * @return array<int|string, array<string>>
+	 */
+	private function prefixWithInstallationPath(array $paths, string $trimmedInstallationPath): array
+	{
+		return array_map(fn (array $paths): array => $this->prefixPaths($paths, $trimmedInstallationPath . '/'), $paths);
+	}
+
+	/**
+	 * @param array<int, string> $paths
+	 *
+	 * @return array<int, string>
+	 */
+	private function prefixPaths(array $paths, string $prefix): array
+	{
+		return array_map(static fn (string $path): string => $prefix . $path, $paths);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/FetchedNode.php b/src/Reflection/BetterReflection/SourceLocator/FetchedNode.php
new file mode 100644
index 00000000..ab9eec7e
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/FetchedNode.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+
+/**
+ * @template-covariant T of Node
+ */
+final class FetchedNode
+{
+
+	/**
+	 * @param T $node
+	 */
+	public function __construct(
+		private Node $node,
+		private ?Node\Stmt\Namespace_ $namespace,
+		private LocatedSource $locatedSource,
+	)
+	{
+	}
+
+	/**
+	 * @return T
+	 */
+	public function getNode(): Node
+	{
+		return $this->node;
+	}
+
+	public function getNamespace(): ?Node\Stmt\Namespace_
+	{
+		return $this->namespace;
+	}
+
+	public function getLocatedSource(): LocatedSource
+	{
+		return $this->locatedSource;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/FetchedNodesResult.php b/src/Reflection/BetterReflection/SourceLocator/FetchedNodesResult.php
new file mode 100644
index 00000000..af5d1c96
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/FetchedNodesResult.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node;
+
+final class FetchedNodesResult
+{
+
+	/**
+	 * @param array<string, array<FetchedNode<Node\Stmt\ClassLike>>> $classNodes
+	 * @param array<string, array<FetchedNode<Node\Stmt\Function_>>> $functionNodes
+	 * @param array<string, array<FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall>>> $constantNodes
+	 */
+	public function __construct(
+		private array $classNodes,
+		private array $functionNodes,
+		private array $constantNodes,
+	)
+	{
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\ClassLike>>>
+	 */
+	public function getClassNodes(): array
+	{
+		return $this->classNodes;
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\Function_>>>
+	 */
+	public function getFunctionNodes(): array
+	{
+		return $this->functionNodes;
+	}
+
+	/**
+	 * @return array<string, array<FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall>>>
+	 */
+	public function getConstantNodes(): array
+	{
+		return $this->constantNodes;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/FileNodesFetcher.php b/src/Reflection/BetterReflection/SourceLocator/FileNodesFetcher.php
new file mode 100644
index 00000000..6c4ad1f8
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/FileNodesFetcher.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\NodeTraverser;
+use PHPStan\File\FileReader;
+use PHPStan\Parser\Parser;
+use PHPStan\Parser\ParserErrorsException;
+
+final class FileNodesFetcher
+{
+
+	public function __construct(
+		private CachingVisitor $cachingVisitor,
+		private Parser $parser,
+	)
+	{
+	}
+
+	public function fetchNodes(string $fileName): FetchedNodesResult
+	{
+		$nodeTraverser = new NodeTraverser();
+		$nodeTraverser->addVisitor($this->cachingVisitor);
+
+		$contents = FileReader::read($fileName);
+
+		try {
+			$ast = $this->parser->parseFile($fileName);
+		} catch (ParserErrorsException) {
+			return new FetchedNodesResult([], [], []);
+		}
+		$this->cachingVisitor->reset($fileName, $contents);
+		$nodeTraverser->traverse($ast);
+
+		$result = new FetchedNodesResult(
+			$this->cachingVisitor->getClassNodes(),
+			$this->cachingVisitor->getFunctionNodes(),
+			$this->cachingVisitor->getConstantNodes(),
+		);
+
+		$this->cachingVisitor->reset($fileName, $contents);
+
+		return $result;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/FileReadTrapStreamWrapper.php b/src/Reflection/BetterReflection/SourceLocator/FileReadTrapStreamWrapper.php
new file mode 100644
index 00000000..2c1593d5
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/FileReadTrapStreamWrapper.php
@@ -0,0 +1,274 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use function is_dir;
+use function is_file;
+use function stat;
+use function stream_resolve_include_path;
+use function stream_wrapper_register;
+use function stream_wrapper_restore;
+use function stream_wrapper_unregister;
+use const SEEK_CUR;
+use const SEEK_END;
+use const SEEK_SET;
+use const STREAM_URL_STAT_QUIET;
+
+/**
+ * This class will operate as a stream wrapper, intercepting any access to a file while
+ * in operation.
+ *
+ * @internal DO NOT USE: this is an implementation detail of
+ *           the {@see \PHPStan\BetterReflection\SourceLocator\Type\AutoloadSourceLocator}
+ *
+ * phpcs:disable SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
+ * phpcs:disable PSR1.Methods.CamelCapsMethodName.NotCamelCaps
+ * phpcs:disable Squiz.NamingConventions.ValidVariableName.NotCamelCaps
+ */
+final class FileReadTrapStreamWrapper
+{
+
+	private const DEFAULT_STREAM_WRAPPER_PROTOCOLS = [
+		'file',
+		'phar',
+	];
+
+	/** @var string[]|null */
+	private static ?array $registeredStreamWrapperProtocols;
+
+	/** @var string[] */
+	public static array $autoloadLocatedFiles = [];
+
+	private bool $readFromFile = false;
+
+	private int $seekPosition = 0;
+
+	/**
+	 * @param string[] $streamWrapperProtocols
+	 *
+	 * @return mixed
+	 *
+	 * @psalm-template ExecutedMethodReturnType of mixed
+	 * @psalm-param callable() : ExecutedMethodReturnType $executeMeWithinStreamWrapperOverride
+	 * @psalm-return ExecutedMethodReturnType
+	 */
+	public static function withStreamWrapperOverride(
+		callable $executeMeWithinStreamWrapperOverride,
+		array $streamWrapperProtocols = self::DEFAULT_STREAM_WRAPPER_PROTOCOLS,
+	)
+	{
+		self::$registeredStreamWrapperProtocols = $streamWrapperProtocols;
+		self::$autoloadLocatedFiles = [];
+
+		try {
+			foreach ($streamWrapperProtocols as $protocol) {
+				stream_wrapper_unregister($protocol);
+				stream_wrapper_register($protocol, self::class);
+			}
+
+			$result = $executeMeWithinStreamWrapperOverride();
+		} finally {
+			foreach ($streamWrapperProtocols as $protocol) {
+				stream_wrapper_restore($protocol);
+			}
+		}
+
+		self::$registeredStreamWrapperProtocols = null;
+		self::$autoloadLocatedFiles = [];
+
+		return $result;
+	}
+
+	/**
+	 * Our wrapper simply records which file we tried to load and returns
+	 * boolean false indicating failure.
+	 *
+	 * @internal do not call this method directly! This is stream wrapper
+	 *           voodoo logic that you **DO NOT** want to touch!
+	 *
+	 * @see https://php.net/manual/en/class.streamwrapper.php
+	 * @see https://php.net/manual/en/streamwrapper.stream-open.php
+	 *
+	 * @param string $path
+	 * @param string $mode
+	 * @param int    $options
+	 * @param string $openedPath
+	 */
+	public function stream_open($path, $mode, $options, &$openedPath): bool
+	{
+		$exists = is_file($path) || (stream_resolve_include_path($path) !== false);
+
+		if ($exists) {
+			self::$autoloadLocatedFiles[] = $path;
+		}
+		$this->readFromFile = false;
+		$this->seekPosition = 0;
+
+		return $exists;
+	}
+
+	/**
+	 * Since we allow our wrapper's stream_open() to succeed, we need to
+	 * simulate a successful read so autoloaders with require() don't explode.
+	 *
+	 * @param int $count
+	 *
+	 */
+	public function stream_read($count): string
+	{
+		$this->readFromFile = true;
+
+		// Dummy return value that is also valid PHP for require(). We'll read
+		// and process the file elsewhere, so it's OK to provide dummy data for
+		// this read.
+		return '';
+	}
+
+	/**
+	 * Since we allowed the open to succeed, we should allow the close to occur
+	 * as well.
+	 *
+	 */
+	public function stream_close(): void
+	{
+		// no op
+	}
+
+	/**
+	 * Required for `require_once` and `include_once` to work per PHP.net
+	 * comment referenced below. We delegate to url_stat().
+	 *
+	 * @see https://www.php.net/manual/en/function.stream-wrapper-register.php#51855
+	 *
+	 * @return mixed[]|bool
+	 */
+	public function stream_stat()
+	{
+		if (self::$autoloadLocatedFiles === []) {
+			return false;
+		}
+
+		return $this->url_stat(self::$autoloadLocatedFiles[0], STREAM_URL_STAT_QUIET);
+	}
+
+	/**
+	 * url_stat is triggered by calls like "file_exists". The call to "file_exists" must not be overloaded.
+	 * This function restores the original "file" stream, issues a call to "stat" to get the real results,
+	 * and then re-registers the AutoloadSourceLocator stream wrapper.
+	 *
+	 * @internal do not call this method directly! This is stream wrapper
+	 *           voodoo logic that you **DO NOT** want to touch!
+	 *
+	 * @see https://php.net/manual/en/class.streamwrapper.php
+	 * @see https://php.net/manual/en/streamwrapper.url-stat.php
+	 *
+	 * @param string $path
+	 * @param int    $flags
+	 *
+	 * @return mixed[]|bool
+	 */
+	public function url_stat($path, $flags)
+	{
+		return $this->invokeWithRealFileStreamWrapper(static function ($path, $flags) {
+			if (($flags & STREAM_URL_STAT_QUIET) !== 0) {
+				return @stat($path);
+			}
+
+			return stat($path);
+		}, [$path, $flags]);
+	}
+
+	/**
+	 * @param mixed[] $args
+	 * @return mixed
+	 */
+	private function invokeWithRealFileStreamWrapper(callable $cb, array $args)
+	{
+		if (self::$registeredStreamWrapperProtocols === null) {
+			throw new ShouldNotHappenException(self::class . ' not registered: cannot operate. Do not call this method directly.');
+		}
+
+		foreach (self::$registeredStreamWrapperProtocols as $protocol) {
+			stream_wrapper_restore($protocol);
+		}
+
+		$result = $cb(...$args);
+
+		foreach (self::$registeredStreamWrapperProtocols as $protocol) {
+			stream_wrapper_unregister($protocol);
+			stream_wrapper_register($protocol, self::class);
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Simulates behavior of reading from an empty file.
+	 *
+	 */
+	public function stream_eof(): bool
+	{
+		return $this->readFromFile;
+	}
+
+	public function stream_flush(): bool
+	{
+		return true;
+	}
+
+	public function stream_tell(): int
+	{
+		return $this->seekPosition;
+	}
+
+	/**
+	 * @param   int  $offset
+	 * @param   int  $whence
+	 */
+	public function stream_seek($offset, $whence): bool
+	{
+		switch ($whence) {
+			// Behavior is the same for a zero-length file
+			case SEEK_SET:
+			case SEEK_END:
+				if ($offset < 0) {
+					return false;
+				}
+				$this->seekPosition = $offset;
+				return true;
+
+			case SEEK_CUR:
+				if ($offset < 0) {
+					return false;
+				}
+				$this->seekPosition += $offset;
+				return true;
+
+			default:
+				return false;
+		}
+	}
+
+	/**
+	 * @param int  $option
+	 * @param int  $arg1
+	 * @param int  $arg2
+	 */
+	public function stream_set_option($option, $arg1, $arg2): bool
+	{
+		return false;
+	}
+
+	public function dir_opendir(string $path, int $options): bool
+	{
+		return is_dir($path);
+	}
+
+	public function dir_readdir(): string
+	{
+		return '';
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocator.php
new file mode 100644
index 00000000..4c074932
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocator.php
@@ -0,0 +1,218 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node;
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Reflection\ConstantNameHelper;
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function array_values;
+use function current;
+use function strtolower;
+
+final class OptimizedDirectorySourceLocator implements SourceLocator
+{
+
+	/**
+	 * @param array<string, string> $classToFile
+	 * @param array<string, array<int, string>> $functionToFiles
+	 * @param array<string, string> $constantToFile
+	 */
+	public function __construct(
+		private FileNodesFetcher $fileNodesFetcher,
+		private array $classToFile,
+		private array $functionToFiles,
+		private array $constantToFile,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if ($identifier->isClass()) {
+			$className = strtolower($identifier->getName());
+			$file = $this->findFileByClass($className);
+			if ($file === null) {
+				return null;
+			}
+
+			$fetchedClassNodes = $this->fileNodesFetcher->fetchNodes($file)->getClassNodes();
+
+			if (!array_key_exists($className, $fetchedClassNodes)) {
+				return null;
+			}
+
+			/** @var FetchedNode<Node\Stmt\ClassLike> $fetchedClassNode */
+			$fetchedClassNode = current($fetchedClassNodes[$className]);
+
+			return $this->nodeToReflection($reflector, $fetchedClassNode);
+		}
+
+		if ($identifier->isFunction()) {
+			$functionName = strtolower($identifier->getName());
+			$files = $this->findFilesByFunction($functionName);
+
+			$fetchedFunctionNode = null;
+			foreach ($files as $file) {
+				$fetchedFunctionNodes = $this->fileNodesFetcher->fetchNodes($file)->getFunctionNodes();
+
+				if (!array_key_exists($functionName, $fetchedFunctionNodes)) {
+					continue;
+				}
+
+				/** @var FetchedNode<Node\Stmt\Function_> $fetchedFunctionNode */
+				$fetchedFunctionNode = current($fetchedFunctionNodes[$functionName]);
+			}
+
+			if ($fetchedFunctionNode === null) {
+				return null;
+			}
+
+			return $this->nodeToReflection($reflector, $fetchedFunctionNode);
+		}
+
+		if ($identifier->isConstant()) {
+			$constantName = ConstantNameHelper::normalize($identifier->getName());
+			$file = $this->findFileByConstant($constantName);
+
+			if ($file === null) {
+				return null;
+			}
+
+			$fetchedConstantNodes = $this->fileNodesFetcher->fetchNodes($file)->getConstantNodes();
+
+			if (!array_key_exists($constantName, $fetchedConstantNodes)) {
+				return null;
+			}
+
+			/** @var FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall> $fetchedConstantNode */
+			$fetchedConstantNode = current($fetchedConstantNodes[$constantName]);
+
+			return $this->nodeToReflection(
+				$reflector,
+				$fetchedConstantNode,
+				$this->findConstantPositionInConstNode($fetchedConstantNode->getNode(), $constantName),
+			);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param FetchedNode<Node\Stmt\ClassLike>|FetchedNode<Node\Stmt\Function_>|FetchedNode<Node\Stmt\Const_|Node\Expr\FuncCall> $fetchedNode
+	 */
+	private function nodeToReflection(Reflector $reflector, FetchedNode $fetchedNode, ?int $positionInNode = null): Reflection
+	{
+		$nodeToReflection = new NodeToReflection();
+		return $nodeToReflection->__invoke(
+			$reflector,
+			$fetchedNode->getNode(),
+			$fetchedNode->getLocatedSource(),
+			$fetchedNode->getNamespace(),
+			$positionInNode,
+		);
+	}
+
+	private function findFileByClass(string $className): ?string
+	{
+		if (!array_key_exists($className, $this->classToFile)) {
+			return null;
+		}
+
+		return $this->classToFile[$className];
+	}
+
+	private function findFileByConstant(string $constantName): ?string
+	{
+		if (!array_key_exists($constantName, $this->constantToFile)) {
+			return null;
+		}
+
+		return $this->constantToFile[$constantName];
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function findFilesByFunction(string $functionName): array
+	{
+		if (!array_key_exists($functionName, $this->functionToFiles)) {
+			return [];
+		}
+
+		return $this->functionToFiles[$functionName];
+	}
+
+	/**
+	 * @return list<Reflection>
+	 */
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		$reflections = [];
+		if ($identifierType->isClass()) {
+			foreach ($this->classToFile as $file) {
+				$fetchedNodesResult = $this->fileNodesFetcher->fetchNodes($file);
+				foreach ($fetchedNodesResult->getClassNodes() as $identifierName => $fetchedClassNodes) {
+					foreach ($fetchedClassNodes as $fetchedClassNode) {
+						$reflections[$identifierName] = $this->nodeToReflection($reflector, $fetchedClassNode);
+					}
+				}
+			}
+		} elseif ($identifierType->isFunction()) {
+			foreach ($this->functionToFiles as $files) {
+				foreach ($files as $file) {
+					$fetchedNodesResult = $this->fileNodesFetcher->fetchNodes($file);
+					foreach ($fetchedNodesResult->getFunctionNodes() as $identifierName => $fetchedFunctionNodes) {
+						foreach ($fetchedFunctionNodes as $fetchedFunctionNode) {
+							$reflections[$identifierName] = $this->nodeToReflection($reflector, $fetchedFunctionNode);
+							continue 2;
+						}
+					}
+				}
+			}
+		} elseif ($identifierType->isConstant()) {
+			foreach ($this->constantToFile as $file) {
+				$fetchedNodesResult = $this->fileNodesFetcher->fetchNodes($file);
+				foreach ($fetchedNodesResult->getConstantNodes() as $identifierName => $fetchedConstantNodes) {
+					foreach ($fetchedConstantNodes as $fetchedConstantNode) {
+						$reflections[$identifierName] = $this->nodeToReflection(
+							$reflector,
+							$fetchedConstantNode,
+							$this->findConstantPositionInConstNode($fetchedConstantNode->getNode(), $identifierName),
+						);
+					}
+				}
+			}
+		}
+
+		return array_values($reflections);
+	}
+
+	private function findConstantPositionInConstNode(Node\Stmt\Const_|Node\Expr\FuncCall $constantNode, string $constantName): ?int
+	{
+		if ($constantNode instanceof Node\Expr\FuncCall) {
+			return null;
+		}
+
+		/** @var int $position */
+		foreach ($constantNode->consts as $position => $const) {
+			if ($const->namespacedName === null) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (ConstantNameHelper::normalize($const->namespacedName->toString()) === $constantName) {
+				return $position;
+			}
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorFactory.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorFactory.php
new file mode 100644
index 00000000..4c7c8241
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorFactory.php
@@ -0,0 +1,217 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\Cache\Cache;
+use PHPStan\File\FileFinder;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ConstantNameHelper;
+use function array_key_exists;
+use function count;
+use function in_array;
+use function ltrim;
+use function php_strip_whitespace;
+use function preg_match_all;
+use function preg_replace;
+use function sha1_file;
+use function sprintf;
+use function strtolower;
+
+final class OptimizedDirectorySourceLocatorFactory
+{
+
+	private PhpFileCleaner $cleaner;
+
+	private string $extraTypes;
+
+	public function __construct(
+		private FileNodesFetcher $fileNodesFetcher,
+		private FileFinder $fileFinder,
+		private PhpVersion $phpVersion,
+		private Cache $cache,
+	)
+	{
+		$this->extraTypes = $this->phpVersion->supportsEnums() ? '|enum' : '';
+		$this->cleaner = new PhpFileCleaner();
+	}
+
+	public function createByDirectory(string $directory): OptimizedDirectorySourceLocator
+	{
+		$files = $this->fileFinder->findFiles([$directory])->getFiles();
+		$fileHashes = [];
+		foreach ($files as $file) {
+			$hash = sha1_file($file);
+			if ($hash === false) {
+				continue;
+			}
+			$fileHashes[$file] = $hash;
+		}
+
+		$cacheKey = sprintf('odsl-%s', $directory);
+		$variableCacheKey = 'v1';
+
+		/** @var array<string, array{string, string[], string[], string[]}>|null $cached */
+		$cached = $this->cache->load($cacheKey, $variableCacheKey);
+		if ($cached !== null) {
+			foreach ($cached as $file => [$hash, $classes, $functions, $constants]) {
+				if (!array_key_exists($file, $fileHashes)) {
+					unset($cached[$file]);
+					continue;
+				}
+				$newHash = $fileHashes[$file];
+				unset($fileHashes[$file]);
+				if ($hash === $newHash) {
+					continue;
+				}
+
+				[$newClasses, $newFunctions, $newConstants] = $this->findSymbols($file);
+				$cached[$file] = [$newHash, $newClasses, $newFunctions, $newConstants];
+			}
+		} else {
+			$cached = [];
+		}
+
+		foreach ($fileHashes as $file => $newHash) {
+			[$newClasses, $newFunctions, $newConstants] = $this->findSymbols($file);
+			$cached[$file] = [$newHash, $newClasses, $newFunctions, $newConstants];
+		}
+		$this->cache->save($cacheKey, $variableCacheKey, $cached);
+
+		[$classToFile, $functionToFiles, $constantToFile] = $this->changeStructure($cached);
+
+		return new OptimizedDirectorySourceLocator(
+			$this->fileNodesFetcher,
+			$classToFile,
+			$functionToFiles,
+			$constantToFile,
+		);
+	}
+
+	/**
+	 * @param string[] $files
+	 */
+	public function createByFiles(array $files): OptimizedDirectorySourceLocator
+	{
+		$symbols = [];
+		foreach ($files as $file) {
+			[$newClasses, $newFunctions, $newConstants] = $this->findSymbols($file);
+			$symbols[$file] = ['', $newClasses, $newFunctions, $newConstants];
+		}
+
+		[$classToFile, $functionToFiles, $constantToFile] = $this->changeStructure($symbols);
+
+		return new OptimizedDirectorySourceLocator(
+			$this->fileNodesFetcher,
+			$classToFile,
+			$functionToFiles,
+			$constantToFile,
+		);
+	}
+
+	/**
+	 * @param array<string, array{string, string[], string[], string[]}> $symbols
+	 * @return array{array<string, string>, array<string, array<int, string>>, array<string, string>}
+	 */
+	private function changeStructure(array $symbols): array
+	{
+		$classToFile = [];
+		$constantToFile = [];
+		$functionToFiles = [];
+		foreach ($symbols as $file => [, $classes, $functions, $constants]) {
+			foreach ($classes as $classInFile) {
+				$classToFile[$classInFile] = $file;
+			}
+			foreach ($functions as $functionInFile) {
+				if (!array_key_exists($functionInFile, $functionToFiles)) {
+					$functionToFiles[$functionInFile] = [];
+				}
+				$functionToFiles[$functionInFile][] = $file;
+			}
+			foreach ($constants as $constantInFile) {
+				$constantToFile[$constantInFile] = $file;
+			}
+		}
+
+		return [
+			$classToFile,
+			$functionToFiles,
+			$constantToFile,
+		];
+	}
+
+	/**
+	 * Inspired by Composer\Autoload\ClassMapGenerator::findClasses()
+	 * @link https://github.com/composer/composer/blob/45d3e133a4691eccb12e9cd6f9dfd76eddc1906d/src/Composer/Autoload/ClassMapGenerator.php#L216
+	 *
+	 * @return array{string[], string[], string[]}
+	 */
+	private function findSymbols(string $file): array
+	{
+		$contents = @php_strip_whitespace($file);
+		if ($contents === '') {
+			return [[], [], []];
+		}
+
+		$matchResults = (bool) preg_match_all(sprintf('{\b(?:(?:class|interface|trait|const|function%s)\s)|(?:define\s*\()}i', $this->extraTypes), $contents, $matches);
+		if (!$matchResults) {
+			return [[], [], []];
+		}
+
+		$contents = $this->cleaner->clean($contents, count($matches[0]));
+
+		preg_match_all(sprintf('{
+			(?:
+				\b(?<![\$:>])(?:
+					(?: (?P<type>class|interface|trait%s) \s++ (?P<name>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\-]*+) )
+					| (?: (?P<function>function) \s++ (?:&\s*)? (?P<fname>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\-]*+) \s*+ [&\(] )
+					| (?: (?P<constant>const) \s++ (?P<cname>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\-]*+) \s*+ [^;] )
+					| (?: (?:\\\)? (?P<define>define) \s*+ \( \s*+ [\'"] (?P<dname>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:[\\\\]{1,2}[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)*+) )
+					| (?: (?P<ns>namespace) (?P<nsname>\s++[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\s*+\\\\\s*+[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)*+)? \s*+ [\{;] )
+				)
+			)
+		}ix', $this->extraTypes), $contents, $matches);
+
+		$classes = [];
+		$functions = [];
+		$constants = [];
+		$namespace = '';
+
+		for ($i = 0, $len = count($matches['type']); $i < $len; $i++) {
+			if (isset($matches['ns'][$i]) && $matches['ns'][$i] !== '') {
+				$namespace = preg_replace('~\s+~', '', strtolower($matches['nsname'][$i])) . '\\';
+				continue;
+			}
+
+			if ($matches['function'][$i] !== '') {
+				$functions[] = strtolower(ltrim($namespace . $matches['fname'][$i], '\\'));
+				continue;
+			}
+
+			if ($matches['constant'][$i] !== '') {
+				$constants[] = ConstantNameHelper::normalize(ltrim($namespace . $matches['cname'][$i], '\\'));
+			}
+
+			if ($matches['define'][$i] !== '') {
+				$constants[] = ConstantNameHelper::normalize($matches['dname'][$i]);
+				continue;
+			}
+
+			$name = $matches['name'][$i];
+
+			// skip anon classes extending/implementing
+			if (in_array($name, ['extends', 'implements'], true)) {
+				continue;
+			}
+
+			$classes[] = strtolower(ltrim($namespace . $name, '\\'));
+		}
+
+		return [
+			$classes,
+			$functions,
+			$constants,
+		];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorRepository.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorRepository.php
new file mode 100644
index 00000000..e711286d
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorRepository.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use function array_key_exists;
+
+final class OptimizedDirectorySourceLocatorRepository
+{
+
+	/** @var array<string, OptimizedDirectorySourceLocator> */
+	private array $locators = [];
+
+	public function __construct(private OptimizedDirectorySourceLocatorFactory $factory)
+	{
+	}
+
+	public function getOrCreate(string $directory): OptimizedDirectorySourceLocator
+	{
+		if (array_key_exists($directory, $this->locators)) {
+			return $this->locators[$directory];
+		}
+
+		$this->locators[$directory] = $this->factory->createByDirectory($directory);
+
+		return $this->locators[$directory];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocator.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocator.php
new file mode 100644
index 00000000..f58bef74
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocator.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\PsrAutoloaderMapping;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use function is_file;
+
+final class OptimizedPsrAutoloaderLocator implements SourceLocator
+{
+
+	/** @var array<string, OptimizedSingleFileSourceLocator> */
+	private array $locators = [];
+
+	public function __construct(
+		private PsrAutoloaderMapping $mapping,
+		private OptimizedSingleFileSourceLocatorRepository $optimizedSingleFileSourceLocatorRepository,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		foreach ($this->locators as $locator) {
+			$reflection = $locator->locateIdentifier($reflector, $identifier);
+			if ($reflection === null) {
+				continue;
+			}
+
+			return $reflection;
+		}
+
+		foreach ($this->mapping->resolvePossibleFilePaths($identifier) as $file) {
+			if (!is_file($file)) {
+				continue;
+			}
+
+			$locator = $this->optimizedSingleFileSourceLocatorRepository->getOrCreate($file);
+			$reflection = $locator->locateIdentifier($reflector, $identifier);
+			if ($reflection === null) {
+				continue;
+			}
+
+			$this->locators[$file] = $locator;
+
+			return $reflection;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return list<Reflection>
+	 */
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocatorFactory.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocatorFactory.php
new file mode 100644
index 00000000..1c42b6e0
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedPsrAutoloaderLocatorFactory.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\SourceLocator\Type\Composer\Psr\PsrAutoloaderMapping;
+
+interface OptimizedPsrAutoloaderLocatorFactory
+{
+
+	public function create(PsrAutoloaderMapping $mapping): OptimizedPsrAutoloaderLocator;
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocator.php
new file mode 100644
index 00000000..d848d3e4
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocator.php
@@ -0,0 +1,261 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PhpParser\Node\Stmt\Const_;
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflection\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\ReflectionConstant;
+use PHPStan\BetterReflection\Reflection\ReflectionFunction;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Reflection\ConstantNameHelper;
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function array_keys;
+use function strtolower;
+
+final class OptimizedSingleFileSourceLocator implements SourceLocator
+{
+
+	/** @var array{classes: array<string, true>, functions: array<string, true>, constants: array<string, true>}|null */
+	private ?array $presentSymbols = null;
+
+	public function __construct(
+		private FileNodesFetcher $fileNodesFetcher,
+		private string $fileName,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if ($this->presentSymbols !== null) {
+			if ($identifier->isClass()) {
+				$className = strtolower($identifier->getName());
+				if (!array_key_exists($className, $this->presentSymbols['classes'])) {
+					return null;
+				}
+			}
+			if ($identifier->isFunction()) {
+				$className = strtolower($identifier->getName());
+				if (!array_key_exists($className, $this->presentSymbols['functions'])) {
+					return null;
+				}
+			}
+			if ($identifier->isConstant()) {
+				$constantName = ConstantNameHelper::normalize($identifier->getName());
+				if (!array_key_exists($constantName, $this->presentSymbols['constants'])) {
+					return null;
+				}
+			}
+		}
+		$fetchedNodesResult = $this->fileNodesFetcher->fetchNodes($this->fileName);
+		if ($this->presentSymbols === null) {
+			$presentSymbols = [
+				'classes' => [],
+				'functions' => [],
+				'constants' => [],
+			];
+			foreach (array_keys($fetchedNodesResult->getClassNodes()) as $className) {
+				$presentSymbols['classes'][$className] = true;
+			}
+			foreach (array_keys($fetchedNodesResult->getFunctionNodes()) as $functionName) {
+				$presentSymbols['functions'][$functionName] = true;
+			}
+			foreach (array_keys($fetchedNodesResult->getConstantNodes()) as $constantName) {
+				$presentSymbols['constants'][$constantName] = true;
+			}
+
+			$this->presentSymbols = $presentSymbols;
+		}
+		$nodeToReflection = new NodeToReflection();
+		if ($identifier->isClass()) {
+			$classNodes = $fetchedNodesResult->getClassNodes();
+			$className = strtolower($identifier->getName());
+			if (!array_key_exists($className, $classNodes)) {
+				return null;
+			}
+
+			foreach ($classNodes[$className] as $classNode) {
+				$classReflection = $nodeToReflection->__invoke(
+					$reflector,
+					$classNode->getNode(),
+					$classNode->getLocatedSource(),
+					$classNode->getNamespace(),
+				);
+				if (!$classReflection instanceof ReflectionClass) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $classReflection;
+			}
+		}
+
+		if ($identifier->isFunction()) {
+			$functionNodes = $fetchedNodesResult->getFunctionNodes();
+			$functionName = strtolower($identifier->getName());
+			if (!array_key_exists($functionName, $functionNodes)) {
+				return null;
+			}
+
+			foreach ($functionNodes[$functionName] as $functionNode) {
+				$functionReflection = $nodeToReflection->__invoke(
+					$reflector,
+					$functionNode->getNode(),
+					$functionNode->getLocatedSource(),
+					$functionNode->getNamespace(),
+				);
+				if (!$functionReflection instanceof ReflectionFunction) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $functionReflection;
+			}
+		}
+
+		if ($identifier->isConstant()) {
+			$constantNodes = $fetchedNodesResult->getConstantNodes();
+			$constantName = ConstantNameHelper::normalize($identifier->getName());
+
+			if (!array_key_exists($constantName, $constantNodes)) {
+				return null;
+			}
+
+			foreach ($constantNodes[$constantName] as $fetchedConstantNode) {
+				$constantNode = $fetchedConstantNode->getNode();
+
+				$positionInNode = null;
+				if ($constantNode instanceof Const_) {
+					foreach ($constantNode->consts as $constPosition => $const) {
+						if ($const->namespacedName === null) {
+							throw new ShouldNotHappenException();
+						}
+
+						if (ConstantNameHelper::normalize($const->namespacedName->toString()) === $constantName) {
+							/** @var int $positionInNode */
+							$positionInNode = $constPosition;
+							break;
+						}
+					}
+
+					if ($positionInNode === null) {
+						throw new ShouldNotHappenException();
+					}
+				}
+
+				$constantReflection = $nodeToReflection->__invoke(
+					$reflector,
+					$fetchedConstantNode->getNode(),
+					$fetchedConstantNode->getLocatedSource(),
+					$fetchedConstantNode->getNamespace(),
+					$positionInNode,
+				);
+				if (!$constantReflection instanceof ReflectionConstant) {
+					throw new ShouldNotHappenException();
+				}
+
+				return $constantReflection;
+			}
+
+			return null;
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		$fetchedNodesResult = $this->fileNodesFetcher->fetchNodes($this->fileName);
+		$nodeToReflection = new NodeToReflection();
+		$reflections = [];
+		if ($identifierType->isClass()) {
+			$classNodes = $fetchedNodesResult->getClassNodes();
+
+			foreach ($classNodes as $classNodesArray) {
+				foreach ($classNodesArray as $classNode) {
+					$classReflection = $nodeToReflection->__invoke(
+						$reflector,
+						$classNode->getNode(),
+						$classNode->getLocatedSource(),
+						$classNode->getNamespace(),
+					);
+
+					if (!$classReflection instanceof ReflectionClass) {
+						throw new ShouldNotHappenException();
+					}
+
+					$reflections[] = $classReflection;
+				}
+			}
+		}
+
+		if ($identifierType->isFunction()) {
+			$functionNodes = $fetchedNodesResult->getFunctionNodes();
+
+			foreach ($functionNodes as $functionNodesArray) {
+				foreach ($functionNodesArray as $functionNode) {
+					$functionReflection = $nodeToReflection->__invoke(
+						$reflector,
+						$functionNode->getNode(),
+						$functionNode->getLocatedSource(),
+						$functionNode->getNamespace(),
+					);
+
+					$reflections[] = $functionReflection;
+				}
+			}
+		}
+
+		if ($identifierType->isConstant()) {
+			$constantNodes = $fetchedNodesResult->getConstantNodes();
+			foreach ($constantNodes as $constantNodesArray) {
+				foreach ($constantNodesArray as $fetchedConstantNode) {
+					$constantNode = $fetchedConstantNode->getNode();
+
+					if ($constantNode instanceof Const_) {
+						foreach ($constantNode->consts as $constPosition => $const) {
+							if ($const->namespacedName === null) {
+								throw new ShouldNotHappenException();
+							}
+
+							$constantReflection = $nodeToReflection->__invoke(
+								$reflector,
+								$constantNode,
+								$fetchedConstantNode->getLocatedSource(),
+								$fetchedConstantNode->getNamespace(),
+								$constPosition,
+							);
+							if (!$constantReflection instanceof ReflectionConstant) {
+								throw new ShouldNotHappenException();
+							}
+
+							$reflections[] = $constantReflection;
+						}
+
+						continue;
+					}
+
+					$constantReflection = $nodeToReflection->__invoke(
+						$reflector,
+						$constantNode,
+						$fetchedConstantNode->getLocatedSource(),
+						$fetchedConstantNode->getNamespace(),
+					);
+					if (!$constantReflection instanceof ReflectionConstant) {
+						throw new ShouldNotHappenException();
+					}
+
+					$reflections[] = $constantReflection;
+				}
+			}
+		}
+
+		return $reflections;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorFactory.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorFactory.php
new file mode 100644
index 00000000..82d2fa92
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorFactory.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+interface OptimizedSingleFileSourceLocatorFactory
+{
+
+	public function create(string $fileName): OptimizedSingleFileSourceLocator;
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorRepository.php b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorRepository.php
new file mode 100644
index 00000000..6714c12c
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/OptimizedSingleFileSourceLocatorRepository.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use function array_key_exists;
+
+final class OptimizedSingleFileSourceLocatorRepository
+{
+
+	/** @var array<string, OptimizedSingleFileSourceLocator> */
+	private array $locators = [];
+
+	public function __construct(private OptimizedSingleFileSourceLocatorFactory $factory)
+	{
+	}
+
+	public function getOrCreate(string $fileName): OptimizedSingleFileSourceLocator
+	{
+		if (array_key_exists($fileName, $this->locators)) {
+			return $this->locators[$fileName];
+		}
+
+		$this->locators[$fileName] = $this->factory->create($fileName);
+
+		return $this->locators[$fileName];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/PhpFileCleaner.php b/src/Reflection/BetterReflection/SourceLocator/PhpFileCleaner.php
new file mode 100644
index 00000000..5c60ef12
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/PhpFileCleaner.php
@@ -0,0 +1,296 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use function array_keys;
+use function implode;
+use function in_array;
+use function preg_match;
+use function preg_quote;
+use function strlen;
+use function substr;
+
+/**
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ * @see https://github.com/composer/composer/pull/10107
+ */
+final class PhpFileCleaner
+{
+
+	/** @var array<array{name: string, length: int, pattern: string}> */
+	private array $typeConfig = [];
+
+	private string $restPattern;
+
+	private string $contents = '';
+
+	private int $len = 0;
+
+	private int $index = 0;
+
+	public function __construct()
+	{
+		foreach (['class', 'interface', 'trait', 'enum'] as $type) {
+			$this->typeConfig[$type[0]] = [
+				'name' => $type,
+				'length' => strlen($type),
+				'pattern' => '{.\b(?<![\$:>])' . $type . '\s++[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\-]*+}Ais',
+			];
+		}
+
+		$this->restPattern = '{[^{}?"\'</d' . implode('', array_keys($this->typeConfig)) . ']+}A';
+	}
+
+	public function clean(string $contents, int $maxMatches): string
+	{
+		$this->contents = $contents;
+		$this->len = strlen($contents);
+		$this->index = 0;
+
+		$inType = false;
+		$typeLevel = 0;
+
+		$inDefine = false;
+
+		$clean = '';
+		while ($this->index < $this->len) {
+			$this->skipToPhp();
+			$clean .= '<?';
+
+			while ($this->index < $this->len) {
+				$char = $this->contents[$this->index];
+				if ($char === '?' && $this->peek('>')) {
+					$clean .= '?>';
+					$this->index += 2;
+					continue 2;
+				}
+
+				if (in_array($char, ['"', "'"], true)) {
+					if ($inDefine) {
+						$clean .= $char . $this->consumeString($char);
+						$inDefine = false;
+					} else {
+						$this->skipString($char);
+						$clean .= 'null';
+					}
+
+					continue;
+				}
+
+				if ($char === '{') {
+					if ($inType) {
+						$typeLevel++;
+					}
+
+					$clean .= $char;
+					$this->index++;
+					continue;
+				}
+
+				if ($char === '}') {
+					if ($inType) {
+						$typeLevel--;
+
+						if ($typeLevel === 0) {
+							$inType = false;
+						}
+					}
+
+					$clean .= $char;
+					$this->index++;
+					continue;
+				}
+
+				if ($char === '<' && $this->peek('<') && $this->match('{<<<[ \t]*+([\'"]?)([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*+)\\1(?:\r\n|\n|\r)}A', $match)) {
+					$this->index += strlen($match[0]);
+					$this->skipHeredoc($match[2]);
+					$clean .= 'null';
+					continue;
+				}
+
+				if ($char === '/') {
+					if ($this->peek('/')) {
+						$this->skipToNewline();
+						continue;
+					}
+					if ($this->peek('*')) {
+						$this->skipComment();
+						continue;
+					}
+				}
+
+				if (
+					$inType
+					&& $char === 'c'
+					&& $this->match('~.\b(?<![\$:>])const(\s++[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff\-]*+)~Ais', $match, $this->index - 1)
+				) {
+					// It's invalid PHP but it does not matter
+					$clean .= 'class_const' . $match[1];
+					$this->index += strlen($match[0]) - 1;
+					continue;
+				}
+
+				if ($char === 'd' && $this->match('~.\b(?<![\$:>])define\s*+\(~Ais', $match, $this->index - 1)) {
+					$inDefine = true;
+					$clean .= $match[0];
+					$this->index += strlen($match[0]) - 1;
+					continue;
+				}
+
+				if (isset($this->typeConfig[$char])) {
+					$type = $this->typeConfig[$char];
+
+					if (substr($this->contents, $this->index, $type['length']) === $type['name']) {
+						if ($maxMatches === 1 && $this->match($type['pattern'], $match, $this->index - 1)) {
+							return $clean . $match[0];
+						}
+
+						$inType = true;
+					}
+				}
+
+				$this->index += 1;
+				if ($this->match($this->restPattern, $match)) {
+					$clean .= $char . $match[0];
+					$this->index += strlen($match[0]);
+				} else {
+					$clean .= $char;
+				}
+			}
+		}
+
+		return $clean;
+	}
+
+	private function skipToPhp(): void
+	{
+		while ($this->index < $this->len) {
+			if ($this->contents[$this->index] === '<' && $this->peek('?')) {
+				$this->index += 2;
+				break;
+			}
+
+			$this->index += 1;
+		}
+	}
+
+	private function consumeString(string $delimiter): string
+	{
+		$string = '';
+
+		$this->index += 1;
+		while ($this->index < $this->len) {
+			if ($this->contents[$this->index] === '\\' && ($this->peek('\\') || $this->peek($delimiter))) {
+				$string .= $this->contents[$this->index];
+				$string .= $this->contents[$this->index + 1];
+
+				$this->index += 2;
+				continue;
+			}
+
+			if ($this->contents[$this->index] === $delimiter) {
+				$string .= $delimiter;
+				$this->index += 1;
+				break;
+			}
+
+			$string .= $this->contents[$this->index];
+			$this->index += 1;
+		}
+
+		return $string;
+	}
+
+	private function skipString(string $delimiter): void
+	{
+		$this->index += 1;
+		while ($this->index < $this->len) {
+			if ($this->contents[$this->index] === '\\' && ($this->peek('\\') || $this->peek($delimiter))) {
+				$this->index += 2;
+				continue;
+			}
+			if ($this->contents[$this->index] === $delimiter) {
+				$this->index += 1;
+				break;
+			}
+			$this->index += 1;
+		}
+	}
+
+	private function skipComment(): void
+	{
+		$this->index += 2;
+		while ($this->index < $this->len) {
+			if ($this->contents[$this->index] === '*' && $this->peek('/')) {
+				$this->index += 2;
+				break;
+			}
+
+			$this->index += 1;
+		}
+	}
+
+	private function skipToNewline(): void
+	{
+		while ($this->index < $this->len) {
+			if (in_array($this->contents[$this->index], ["\r", "\n"], true)) {
+				return;
+			}
+			$this->index += 1;
+		}
+	}
+
+	private function skipHeredoc(string $delimiter): void
+	{
+		$firstDelimiterChar = $delimiter[0];
+		$delimiterLength = strlen($delimiter);
+		$delimiterPattern = '{' . preg_quote($delimiter) . '(?![a-zA-Z0-9_\x80-\xff])}A';
+
+		while ($this->index < $this->len) {
+			// check if we find the delimiter after some spaces/tabs
+			switch ($this->contents[$this->index]) {
+				case "\t":
+				case ' ':
+					$this->index += 1;
+					continue 2;
+				case $firstDelimiterChar:
+					if (
+						substr($this->contents, $this->index, $delimiterLength) === $delimiter
+						&& $this->match($delimiterPattern)
+					) {
+						$this->index += $delimiterLength;
+						return;
+					}
+					break;
+			}
+
+			// skip the rest of the line
+			while ($this->index < $this->len) {
+				$this->skipToNewline();
+
+				// skip newlines
+				while ($this->index < $this->len && ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n")) {
+					$this->index += 1;
+				}
+
+				break;
+			}
+		}
+	}
+
+	private function peek(string $char): bool
+	{
+		return $this->index + 1 < $this->len && $this->contents[$this->index + 1] === $char;
+	}
+
+	/**
+	 * @param string[]|null $match
+	 * @param-out string[] $match
+	 */
+	private function match(string $regex, ?array &$match = null, ?int $offset = null): bool
+	{
+		return preg_match($regex, $this->contents, $match, 0, $offset ?? $this->index) === 1;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/PhpVersionBlacklistSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/PhpVersionBlacklistSourceLocator.php
new file mode 100644
index 00000000..745a7623
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/PhpVersionBlacklistSourceLocator.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+
+final class PhpVersionBlacklistSourceLocator implements SourceLocator
+{
+
+	public function __construct(
+		private SourceLocator $sourceLocator,
+		private PhpStormStubsSourceStubber $phpStormStubsSourceStubber,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if ($identifier->isClass()) {
+			if ($this->phpStormStubsSourceStubber->isPresentClass($identifier->getName()) === false) {
+				return null;
+			}
+		}
+
+		if ($identifier->isFunction()) {
+			if ($this->phpStormStubsSourceStubber->isPresentFunction($identifier->getName()) === false) {
+				return null;
+			}
+		}
+
+		return $this->sourceLocator->locateIdentifier($reflector, $identifier);
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return $this->sourceLocator->locateIdentifiersByType($reflector, $identifierType);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/ReflectionClassSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/ReflectionClassSourceLocator.php
new file mode 100644
index 00000000..8fb1f229
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/ReflectionClassSourceLocator.php
@@ -0,0 +1,54 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\Locator;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\ReflectionSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use ReflectionClass;
+
+final class ReflectionClassSourceLocator implements SourceLocator
+{
+
+	public function __construct(
+		private Locator $astLocator,
+		private ReflectionSourceStubber $reflectionSourceStubber,
+	)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if (!$identifier->isClass()) {
+			return null;
+		}
+
+		/** @var class-string $className */
+		$className = $identifier->getName();
+
+		$stub = $this->reflectionSourceStubber->generateClassStub($className);
+		if ($stub === null) {
+			return null;
+		}
+
+		$reflection = new ReflectionClass($className);
+
+		return $this->astLocator->findReflection(
+			$reflector,
+			new LocatedSource($stub->getStub(), $reflection->getName(), null),
+			new Identifier($reflection->getName(), new IdentifierType(IdentifierType::IDENTIFIER_CLASS)),
+		);
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/RewriteClassAliasSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/RewriteClassAliasSourceLocator.php
new file mode 100644
index 00000000..837d7c6a
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/RewriteClassAliasSourceLocator.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use ReflectionClass as CoreReflectionClass;
+use function class_exists;
+use function interface_exists;
+use function trait_exists;
+
+final class RewriteClassAliasSourceLocator implements SourceLocator
+{
+
+	public function __construct(private SourceLocator $originalSourceLocator)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if (!$identifier->isClass()) {
+			return $this->originalSourceLocator->locateIdentifier($reflector, $identifier);
+		}
+
+		if (
+			class_exists($identifier->getName(), false)
+			|| interface_exists($identifier->getName(), false)
+			|| trait_exists($identifier->getName(), false)
+		) {
+			$classReflection = new CoreReflectionClass($identifier->getName());
+
+			return $this->originalSourceLocator->locateIdentifier($reflector, new Identifier($classReflection->getName(), $identifier->getType()));
+		}
+
+		return $this->originalSourceLocator->locateIdentifier($reflector, $identifier);
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return $this->originalSourceLocator->locateIdentifiersByType($reflector, $identifierType);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceLocator/SkipClassAliasSourceLocator.php b/src/Reflection/BetterReflection/SourceLocator/SkipClassAliasSourceLocator.php
new file mode 100644
index 00000000..a717eb6d
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceLocator/SkipClassAliasSourceLocator.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceLocator;
+return;
+
+use PHPStan\BetterReflection\Identifier\Identifier;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Reflection;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use ReflectionClass;
+use function class_exists;
+
+final class SkipClassAliasSourceLocator implements SourceLocator
+{
+
+	public function __construct(private SourceLocator $sourceLocator)
+	{
+	}
+
+	public function locateIdentifier(Reflector $reflector, Identifier $identifier): ?Reflection
+	{
+		if ($identifier->isClass()) {
+			$className = $identifier->getName();
+			if (!class_exists($className, false)) {
+				return $this->sourceLocator->locateIdentifier($reflector, $identifier);
+			}
+
+			$reflection = new ReflectionClass($className);
+			if ($reflection->getName() === 'ReturnTypeWillChange') {
+				return $this->sourceLocator->locateIdentifier($reflector, $identifier);
+			}
+			if ($reflection->getFileName() === false) {
+				return $this->sourceLocator->locateIdentifier($reflector, $identifier);
+			}
+
+			return null;
+		}
+
+		return $this->sourceLocator->locateIdentifier($reflector, $identifier);
+	}
+
+	public function locateIdentifiersByType(Reflector $reflector, IdentifierType $identifierType): array
+	{
+		return $this->sourceLocator->locateIdentifiersByType($reflector, $identifierType);
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceStubber/PhpStormStubsSourceStubberFactory.php b/src/Reflection/BetterReflection/SourceStubber/PhpStormStubsSourceStubberFactory.php
new file mode 100644
index 00000000..2365bda1
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceStubber/PhpStormStubsSourceStubberFactory.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceStubber;
+return;
+
+use PhpParser\Parser;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\Node\Printer\Printer;
+use PHPStan\Php\PhpVersion;
+
+final class PhpStormStubsSourceStubberFactory
+{
+
+	public function __construct(private Parser $phpParser, private Printer $printer, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function create(): PhpStormStubsSourceStubber
+	{
+		return new PhpStormStubsSourceStubber($this->phpParser, $this->printer, $this->phpVersion->getVersionId());
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/SourceStubber/ReflectionSourceStubberFactory.php b/src/Reflection/BetterReflection/SourceStubber/ReflectionSourceStubberFactory.php
new file mode 100644
index 00000000..07016b70
--- /dev/null
+++ b/src/Reflection/BetterReflection/SourceStubber/ReflectionSourceStubberFactory.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\SourceStubber;
+return;
+
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\ReflectionSourceStubber;
+use PHPStan\Node\Printer\Printer;
+use PHPStan\Php\PhpVersion;
+
+final class ReflectionSourceStubberFactory
+{
+
+	public function __construct(private Printer $printer, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function create(): ReflectionSourceStubber
+	{
+		return new ReflectionSourceStubber($this->printer, $this->phpVersion->getVersionId());
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/Type/AdapterReflectionEnumCaseDynamicReturnTypeExtension.php b/src/Reflection/BetterReflection/Type/AdapterReflectionEnumCaseDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..45fde991
--- /dev/null
+++ b/src/Reflection/BetterReflection/Type/AdapterReflectionEnumCaseDynamicReturnTypeExtension.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionType;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function in_array;
+
+final class AdapterReflectionEnumCaseDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	/**
+	 * @param class-string $class
+	 */
+	public function __construct(private PhpVersion $phpVersion, private string $class)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return $this->class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return in_array($methodReflection->getName(), [
+			'getDocComment',
+			'getType',
+		], true);
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			return null;
+		}
+
+		if ($methodReflection->getName() === 'getDocComment') {
+			return new UnionType([
+				new StringType(),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		if ($methodReflection->getName() === 'getType') {
+			return new UnionType([
+				new ObjectType(ReflectionType::class),
+				new NullType(),
+			]);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/BetterReflection/Type/AdapterReflectionEnumDynamicReturnTypeExtension.php b/src/Reflection/BetterReflection/Type/AdapterReflectionEnumDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..13f51a9d
--- /dev/null
+++ b/src/Reflection/BetterReflection/Type/AdapterReflectionEnumDynamicReturnTypeExtension.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Reflection\BetterReflection\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClassConstant;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnum;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function in_array;
+
+final class AdapterReflectionEnumDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return ReflectionEnum::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return in_array($methodReflection->getName(), [
+			'getFileName',
+			'getStartLine',
+			'getEndLine',
+			'getDocComment',
+			'getReflectionConstant',
+			'getParentClass',
+			'getExtensionName',
+			'getBackingType',
+		], true);
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			return null;
+		}
+
+		if (in_array($methodReflection->getName(), ['getFileName', 'getExtensionName'], true)) {
+			return new UnionType([
+				new IntersectionType([
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+				]),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		if ($methodReflection->getName() === 'getDocComment') {
+			return new UnionType([
+				new StringType(),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		if (in_array($methodReflection->getName(), ['getStartLine', 'getEndLine'], true)) {
+			return new IntegerType();
+		}
+
+		if ($methodReflection->getName() === 'getReflectionConstant') {
+			return new UnionType([
+				new ObjectType(ReflectionClassConstant::class),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		if ($methodReflection->getName() === 'getParentClass') {
+			return new UnionType([
+				new ObjectType(ReflectionClass::class),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		if ($methodReflection->getName() === 'getBackingType') {
+			return new UnionType([
+				new ObjectType(ReflectionNamedType::class),
+				new NullType(),
+			]);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/Callables/CallableParametersAcceptor.php b/src/Reflection/Callables/CallableParametersAcceptor.php
new file mode 100644
index 00000000..4257706a
--- /dev/null
+++ b/src/Reflection/Callables/CallableParametersAcceptor.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Reflection\Callables;
+return;
+
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\TrinaryLogic;
+
+/**
+ * @api
+ */
+interface CallableParametersAcceptor extends ParametersAcceptor
+{
+
+	/**
+	 * @return SimpleThrowPoint[]
+	 */
+	public function getThrowPoints(): array;
+
+	public function isPure(): TrinaryLogic;
+
+	public function acceptsNamedArguments(): TrinaryLogic;
+
+	/**
+	 * @return SimpleImpurePoint[]
+	 */
+	public function getImpurePoints(): array;
+
+	/**
+	 * @return InvalidateExprNode[]
+	 */
+	public function getInvalidateExpressions(): array;
+
+	/**
+	 * @return string[]
+	 */
+	public function getUsedVariables(): array;
+
+}
diff --git a/src/Reflection/Callables/FunctionCallableVariant.php b/src/Reflection/Callables/FunctionCallableVariant.php
new file mode 100644
index 00000000..90d1dbfb
--- /dev/null
+++ b/src/Reflection/Callables/FunctionCallableVariant.php
@@ -0,0 +1,172 @@
+<?php 
+
+namespace PHPStan\Reflection\Callables;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use Throwable;
+use function array_map;
+use function count;
+
+final class FunctionCallableVariant implements CallableParametersAcceptor, ExtendedParametersAcceptor
+{
+
+	/** @var SimpleThrowPoint[]|null  */
+	private ?array $throwPoints = null;
+
+	/** @var SimpleImpurePoint[]|null  */
+	private ?array $impurePoints = null;
+
+	public function __construct(
+		private FunctionReflection|ExtendedMethodReflection $function,
+		private ExtendedParametersAcceptor $variant,
+	)
+	{
+	}
+
+	/**
+	 * @param ExtendedParametersAcceptor[] $variants
+	 * @return self[]
+	 */
+	public static function createFromVariants(FunctionReflection|ExtendedMethodReflection $function, array $variants): array
+	{
+		return array_map(static fn (ExtendedParametersAcceptor $variant) => new self($function, $variant), $variants);
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->variant->getTemplateTypeMap();
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->variant->getResolvedTemplateTypeMap();
+	}
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		return $this->variant->getParameters();
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variant->isVariadic();
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->variant->getReturnType();
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		return $this->variant->getPhpDocReturnType();
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->variant->getNativeReturnType();
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->variant->getCallSiteVarianceMap();
+	}
+
+	public function getThrowPoints(): array
+	{
+		if ($this->throwPoints !== null) {
+			return $this->throwPoints;
+		}
+
+		if ($this->variant instanceof CallableParametersAcceptor) {
+			return $this->throwPoints = $this->variant->getThrowPoints();
+		}
+
+		$returnType = $this->variant->getReturnType();
+		$throwType = $this->function->getThrowType();
+		if ($throwType === null) {
+			if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+				$throwType = new ObjectType(Throwable::class);
+			}
+		}
+
+		$throwPoints = [];
+		if ($throwType !== null) {
+			if (!$throwType->isVoid()->yes()) {
+				$throwPoints[] = SimpleThrowPoint::createExplicit($throwType, true);
+			}
+		} else {
+			if (!(new ObjectType(Throwable::class))->isSuperTypeOf($returnType)->yes()) {
+				$throwPoints[] = SimpleThrowPoint::createImplicit();
+			}
+		}
+
+		return $this->throwPoints = $throwPoints;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		$impurePoints = $this->getImpurePoints();
+		if (count($impurePoints) === 0) {
+			return TrinaryLogic::createYes();
+		}
+
+		$certainCount = 0;
+		foreach ($impurePoints as $impurePoint) {
+			if (!$impurePoint->isCertain()) {
+				continue;
+			}
+
+			$certainCount++;
+		}
+
+		return $certainCount > 0 ? TrinaryLogic::createNo() : TrinaryLogic::createMaybe();
+	}
+
+	public function getImpurePoints(): array
+	{
+		if ($this->impurePoints !== null) {
+			return $this->impurePoints;
+		}
+
+		if ($this->variant instanceof CallableParametersAcceptor) {
+			return $this->impurePoints = $this->variant->getImpurePoints();
+		}
+
+		$impurePoint = SimpleImpurePoint::createFromVariant($this->function, $this->variant);
+		if ($impurePoint === null) {
+			return $this->impurePoints = [];
+		}
+
+		return $this->impurePoints = [$impurePoint];
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return [];
+	}
+
+	public function getUsedVariables(): array
+	{
+		return [];
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->function->acceptsNamedArguments();
+	}
+
+}
diff --git a/src/Reflection/Callables/SimpleImpurePoint.php b/src/Reflection/Callables/SimpleImpurePoint.php
new file mode 100644
index 00000000..e76ddb28
--- /dev/null
+++ b/src/Reflection/Callables/SimpleImpurePoint.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Reflection\Callables;
+return;
+
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use function sprintf;
+
+/**
+ * @phpstan-import-type ImpurePointIdentifier from ImpurePoint
+ */
+final class SimpleImpurePoint
+{
+
+	/**
+	 * @param ImpurePointIdentifier $identifier
+	 */
+	public function __construct(
+		private string $identifier,
+		private string $description,
+		private bool $certain,
+	)
+	{
+	}
+
+	public static function createFromVariant(FunctionReflection|ExtendedMethodReflection $function, ?ParametersAcceptor $variant): ?self
+	{
+		if (!$function->hasSideEffects()->no()) {
+			$certain = $function->isPure()->no();
+			if ($variant !== null) {
+				$certain = $certain || $variant->getReturnType()->isVoid()->yes();
+			}
+
+			if ($function instanceof FunctionReflection) {
+				return new SimpleImpurePoint(
+					'functionCall',
+					sprintf('call to function %s()', $function->getName()),
+					$certain,
+				);
+			}
+
+			return new SimpleImpurePoint(
+				'methodCall',
+				sprintf('call to method %s::%s()', $function->getDeclaringClass()->getDisplayName(), $function->getName()),
+				$certain,
+			);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return ImpurePointIdentifier
+	 */
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	public function getDescription(): string
+	{
+		return $this->description;
+	}
+
+	public function isCertain(): bool
+	{
+		return $this->certain;
+	}
+
+}
diff --git a/src/Reflection/Callables/SimpleThrowPoint.php b/src/Reflection/Callables/SimpleThrowPoint.php
new file mode 100644
index 00000000..b5e6d6f9
--- /dev/null
+++ b/src/Reflection/Callables/SimpleThrowPoint.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Reflection\Callables;
+return;
+
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use Throwable;
+
+final class SimpleThrowPoint
+{
+
+	private function __construct(
+		private Type $type,
+		private bool $explicit,
+		private bool $canContainAnyThrowable,
+	)
+	{
+	}
+
+	public static function createExplicit(Type $type, bool $canContainAnyThrowable): self
+	{
+		return new self($type, true, $canContainAnyThrowable);
+	}
+
+	public static function createImplicit(): self
+	{
+		return new self(new ObjectType(Throwable::class), false, true);
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->explicit;
+	}
+
+	public function canContainAnyThrowable(): bool
+	{
+		return $this->canContainAnyThrowable;
+	}
+
+}
diff --git a/src/Reflection/ClassConstantReflection.php b/src/Reflection/ClassConstantReflection.php
new file mode 100644
index 00000000..488d1dee
--- /dev/null
+++ b/src/Reflection/ClassConstantReflection.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Type\Type;
+
+/** @api */
+interface ClassConstantReflection extends ClassMemberReflection, ConstantReflection
+{
+
+	public function getValueExpr(): Expr;
+
+	public function isFinal(): bool;
+
+	public function hasPhpDocType(): bool;
+
+	public function getPhpDocType(): ?Type;
+
+	public function hasNativeType(): bool;
+
+	public function getNativeType(): ?Type;
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array;
+
+}
diff --git a/src/Reflection/ClassMemberAccessAnswerer.php b/src/Reflection/ClassMemberAccessAnswerer.php
new file mode 100644
index 00000000..7651b7c2
--- /dev/null
+++ b/src/Reflection/ClassMemberAccessAnswerer.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/** @api */
+interface ClassMemberAccessAnswerer
+{
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getClassReflection()
+	 */
+	public function isInClass(): bool;
+
+	public function getClassReflection(): ?ClassReflection;
+
+	/**
+	 * @deprecated Use canReadProperty() or canWriteProperty()
+	 */
+	public function canAccessProperty(PropertyReflection $propertyReflection): bool;
+
+	public function canReadProperty(ExtendedPropertyReflection $propertyReflection): bool;
+
+	public function canWriteProperty(ExtendedPropertyReflection $propertyReflection): bool;
+
+	public function canCallMethod(MethodReflection $methodReflection): bool;
+
+	public function canAccessConstant(ClassConstantReflection $constantReflection): bool;
+
+}
diff --git a/src/Reflection/ClassMemberReflection.php b/src/Reflection/ClassMemberReflection.php
new file mode 100644
index 00000000..c3258e07
--- /dev/null
+++ b/src/Reflection/ClassMemberReflection.php
@@ -0,0 +1,20 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/** @api */
+interface ClassMemberReflection
+{
+
+	public function getDeclaringClass(): ClassReflection;
+
+	public function isStatic(): bool;
+
+	public function isPrivate(): bool;
+
+	public function isPublic(): bool;
+
+	public function getDocComment(): ?string;
+
+}
diff --git a/src/Reflection/ClassNameHelper.php b/src/Reflection/ClassNameHelper.php
new file mode 100644
index 00000000..bfc61175
--- /dev/null
+++ b/src/Reflection/ClassNameHelper.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Nette\Utils\Strings;
+use function ltrim;
+
+final class ClassNameHelper
+{
+
+	public static function isValidClassName(string $name): bool
+	{
+		// from https://stackoverflow.com/questions/3195614/validate-class-method-names-with-regex#comment104531582_12011255
+		return Strings::match(ltrim($name, '\\'), '/^[a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*(\\\\[a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*)*$/') !== null;
+	}
+
+}
diff --git a/src/Reflection/ClassReflection.php b/src/Reflection/ClassReflection.php
new file mode 100644
index 00000000..637d746a
--- /dev/null
+++ b/src/Reflection/ClassReflection.php
@@ -0,0 +1,1841 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Attribute;
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name\FullyQualified;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnum;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnumBackedCase;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\PhpDoc\Tag\MethodTag;
+use PHPStan\PhpDoc\Tag\MixinTag;
+use PHPStan\PhpDoc\Tag\PropertyTag;
+use PHPStan\PhpDoc\Tag\RequireExtendsTag;
+use PHPStan\PhpDoc\Tag\RequireImplementsTag;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDoc\Tag\TypeAliasImportTag;
+use PHPStan\PhpDoc\Tag\TypeAliasTag;
+use PHPStan\Reflection\Php\PhpClassReflectionExtension;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+use PHPStan\Reflection\Php\UniversalObjectCratesClassReflectionExtension;
+use PHPStan\Reflection\RequireExtension\RequireExtendsMethodsClassReflectionExtension;
+use PHPStan\Reflection\RequireExtension\RequireExtendsPropertiesClassReflectionExtension;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\CircularTypeAliasDefinitionException;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Generic\TypeProjectionHelper;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeAlias;
+use PHPStan\Type\TypehintHelper;
+use PHPStan\Type\VerbosityLevel;
+use ReflectionException;
+use function array_diff;
+use function array_filter;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function array_shift;
+use function array_unique;
+use function array_values;
+use function count;
+use function implode;
+use function in_array;
+use function is_bool;
+use function is_file;
+use function is_int;
+use function reset;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @api
+ */
+final class ClassReflection
+{
+
+	/** @var ExtendedMethodReflection[] */
+	private array $methods = [];
+
+	/** @var ExtendedPropertyReflection[] */
+	private array $properties = [];
+
+	/** @var RealClassClassConstantReflection[] */
+	private array $constants = [];
+
+	/** @var EnumCaseReflection[]|null  */
+	private ?array $enumCases = null;
+
+	/** @var int[]|null */
+	private ?array $classHierarchyDistances = null;
+
+	private ?string $deprecatedDescription = null;
+
+	private ?bool $isDeprecated = null;
+
+	private ?bool $isGeneric = null;
+
+	private ?bool $isInternal = null;
+
+	private ?bool $isFinal = null;
+
+	private ?bool $isImmutable = null;
+
+	private ?bool $hasConsistentConstructor = null;
+
+	private ?bool $acceptsNamedArguments = null;
+
+	private ?TemplateTypeMap $templateTypeMap = null;
+
+	private ?TemplateTypeMap $activeTemplateTypeMap = null;
+
+	private ?TemplateTypeVarianceMap $defaultCallSiteVarianceMap = null;
+
+	private ?TemplateTypeVarianceMap $callSiteVarianceMap = null;
+
+	/** @var array<string,ClassReflection>|null */
+	private ?array $ancestors = null;
+
+	private ?string $cacheKey = null;
+
+	/** @var array<string, bool> */
+	private array $subclasses = [];
+
+	private string|false|null $filename = false;
+
+	private string|false|null $reflectionDocComment = false;
+
+	private false|ResolvedPhpDocBlock $resolvedPhpDocBlock = false;
+
+	private false|ResolvedPhpDocBlock $traitContextResolvedPhpDocBlock = false;
+
+	/** @var array<string, ClassReflection>|null */
+	private ?array $cachedInterfaces = null;
+
+	private ClassReflection|false|null $cachedParentClass = false;
+
+	/** @var array<string, TypeAlias>|null */
+	private ?array $typeAliases = null;
+
+	/** @var array<string, true> */
+	private static array $resolvingTypeAliasImports = [];
+
+	/** @var array<string, bool> */
+	private array $hasMethodCache = [];
+
+	/**
+	 * @param PropertiesClassReflectionExtension[] $propertiesClassReflectionExtensions
+	 * @param MethodsClassReflectionExtension[] $methodsClassReflectionExtensions
+	 * @param AllowedSubTypesClassReflectionExtension[] $allowedSubTypesClassReflectionExtensions
+	 * @param string[] $universalObjectCratesClasses
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private FileTypeMapper $fileTypeMapper,
+		private StubPhpDocProvider $stubPhpDocProvider,
+		private PhpDocInheritanceResolver $phpDocInheritanceResolver,
+		private PhpVersion $phpVersion,
+		private SignatureMapProvider $signatureMapProvider,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private array $propertiesClassReflectionExtensions,
+		private array $methodsClassReflectionExtensions,
+		private array $allowedSubTypesClassReflectionExtensions,
+		private RequireExtendsPropertiesClassReflectionExtension $requireExtendsPropertiesClassReflectionExtension,
+		private RequireExtendsMethodsClassReflectionExtension $requireExtendsMethodsClassReflectionExtension,
+		private string $displayName,
+		private ReflectionClass|ReflectionEnum $reflection,
+		private ?string $anonymousFilename,
+		private ?TemplateTypeMap $resolvedTemplateTypeMap,
+		private ?ResolvedPhpDocBlock $stubPhpDocBlock,
+		private array $universalObjectCratesClasses,
+		private ?string $extraCacheKey = null,
+		private ?TemplateTypeVarianceMap $resolvedCallSiteVarianceMap = null,
+	)
+	{
+	}
+
+	public function getNativeReflection(): ReflectionClass|ReflectionEnum
+	{
+		return $this->reflection;
+	}
+
+	public function getFileName(): ?string
+	{
+		if (!is_bool($this->filename)) {
+			return $this->filename;
+		}
+
+		if ($this->anonymousFilename !== null) {
+			return $this->filename = $this->anonymousFilename;
+		}
+		$fileName = $this->reflection->getFileName();
+		if ($fileName === false) {
+			return $this->filename = null;
+		}
+
+		if (!is_file($fileName)) {
+			return $this->filename = null;
+		}
+
+		return $this->filename = $fileName;
+	}
+
+	public function getParentClass(): ?ClassReflection
+	{
+		if (!is_bool($this->cachedParentClass)) {
+			return $this->cachedParentClass;
+		}
+
+		$parentClass = $this->reflection->getParentClass();
+
+		if ($parentClass === false) {
+			return $this->cachedParentClass = null;
+		}
+
+		$extendsTag = $this->getFirstExtendsTag();
+
+		if ($extendsTag !== null && $this->isValidAncestorType($extendsTag->getType(), [$parentClass->getName()])) {
+			$extendedType = $extendsTag->getType();
+
+			if ($this->isGeneric()) {
+				$extendedType = TemplateTypeHelper::resolveTemplateTypes(
+					$extendedType,
+					$this->getPossiblyIncompleteActiveTemplateTypeMap(),
+					$this->getCallSiteVarianceMap(),
+					TemplateTypeVariance::createStatic(),
+				);
+			}
+
+			if (!$extendedType instanceof GenericObjectType) {
+				return $this->reflectionProvider->getClass($parentClass->getName());
+			}
+
+			return $extendedType->getClassReflection() ?? $this->reflectionProvider->getClass($parentClass->getName());
+		}
+
+		$parentReflection = $this->reflectionProvider->getClass($parentClass->getName());
+		if ($parentReflection->isGeneric()) {
+			return $parentReflection->withTypes(
+				array_values($parentReflection->getTemplateTypeMap()->map(static fn (): Type => new ErrorType())->getTypes()),
+			);
+		}
+
+		$this->cachedParentClass = $parentReflection;
+
+		return $parentReflection;
+	}
+
+	/**
+	 * @return class-string
+	 */
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getDisplayName(bool $withTemplateTypes = true): string
+	{
+		if (
+			$withTemplateTypes === false
+			|| $this->resolvedTemplateTypeMap === null
+			|| count($this->resolvedTemplateTypeMap->getTypes()) === 0
+		) {
+			return $this->displayName;
+		}
+
+		$templateTypes = [];
+		$variances = $this->getCallSiteVarianceMap()->getVariances();
+		foreach ($this->getActiveTemplateTypeMap()->getTypes() as $name => $templateType) {
+			$variance = $variances[$name] ?? null;
+			if ($variance === null) {
+				continue;
+			}
+
+			$templateTypes[] = TypeProjectionHelper::describe($templateType, $variance, VerbosityLevel::typeOnly());
+		}
+
+		return $this->displayName . '<' . implode(',', $templateTypes) . '>';
+	}
+
+	public function getCacheKey(): string
+	{
+		$cacheKey = $this->cacheKey;
+		if ($cacheKey !== null) {
+			return $this->cacheKey;
+		}
+
+		$cacheKey = $this->displayName;
+
+		if ($this->resolvedTemplateTypeMap !== null) {
+			$templateTypes = [];
+			$variances = $this->getCallSiteVarianceMap()->getVariances();
+			foreach ($this->getActiveTemplateTypeMap()->getTypes() as $name => $templateType) {
+				$variance = $variances[$name] ?? null;
+				if ($variance === null) {
+					continue;
+				}
+
+				$templateTypes[] = TypeProjectionHelper::describe($templateType, $variance, VerbosityLevel::cache());
+			}
+
+			$cacheKey .= '<' . implode(',', $templateTypes) . '>';
+		}
+
+		if ($this->extraCacheKey !== null) {
+			$cacheKey .= '-' . $this->extraCacheKey;
+		}
+
+		$this->cacheKey = $cacheKey;
+
+		return $cacheKey;
+	}
+
+	/**
+	 * @return int[]
+	 */
+	public function getClassHierarchyDistances(): array
+	{
+		if ($this->classHierarchyDistances === null) {
+			$distance = 0;
+			$distances = [
+				$this->getName() => $distance,
+			];
+			$currentClassReflection = $this->getNativeReflection();
+			foreach ($this->collectTraits($this->getNativeReflection()) as $trait) {
+				$distance++;
+				if (array_key_exists($trait->getName(), $distances)) {
+					continue;
+				}
+
+				$distances[$trait->getName()] = $distance;
+			}
+
+			while ($currentClassReflection->getParentClass() !== false) {
+				$distance++;
+				$parentClassName = $currentClassReflection->getParentClass()->getName();
+				if (!array_key_exists($parentClassName, $distances)) {
+					$distances[$parentClassName] = $distance;
+				}
+				$currentClassReflection = $currentClassReflection->getParentClass();
+				foreach ($this->collectTraits($currentClassReflection) as $trait) {
+					$distance++;
+					if (array_key_exists($trait->getName(), $distances)) {
+						continue;
+					}
+
+					$distances[$trait->getName()] = $distance;
+				}
+			}
+			foreach ($this->getNativeReflection()->getInterfaces() as $interface) {
+				$distance++;
+				if (array_key_exists($interface->getName(), $distances)) {
+					continue;
+				}
+
+				$distances[$interface->getName()] = $distance;
+			}
+
+			$this->classHierarchyDistances = $distances;
+		}
+
+		return $this->classHierarchyDistances;
+	}
+
+	/**
+	 * @return list<ReflectionClass>
+	 */
+	private function collectTraits(ReflectionClass|ReflectionEnum $class): array
+	{
+		$traits = [];
+		$traitsLeftToAnalyze = $class->getTraits();
+
+		while (count($traitsLeftToAnalyze) !== 0) {
+			$trait = reset($traitsLeftToAnalyze);
+			$traits[] = $trait;
+
+			foreach ($trait->getTraits() as $subTrait) {
+				if (in_array($subTrait, $traits, true)) {
+					continue;
+				}
+
+				$traitsLeftToAnalyze[] = $subTrait;
+			}
+
+			array_shift($traitsLeftToAnalyze);
+		}
+
+		return $traits;
+	}
+
+	public function allowsDynamicProperties(): bool
+	{
+		if ($this->isEnum()) {
+			return false;
+		}
+
+		if (!$this->phpVersion->deprecatesDynamicProperties()) {
+			return true;
+		}
+
+		if ($this->isReadOnly()) {
+			return false;
+		}
+
+		if (UniversalObjectCratesClassReflectionExtension::isUniversalObjectCrate(
+			$this->reflectionProvider,
+			$this,
+		)) {
+			return true;
+		}
+
+		$class = $this;
+		$attributes = $class->reflection->getAttributes('AllowDynamicProperties');
+		while (count($attributes) === 0 && $class->getParentClass() !== null) {
+			$attributes = $class->getParentClass()->reflection->getAttributes('AllowDynamicProperties');
+			$class = $class->getParentClass();
+		}
+
+		return count($attributes) > 0;
+	}
+
+	private function allowsDynamicPropertiesExtensions(): bool
+	{
+		if ($this->allowsDynamicProperties()) {
+			return true;
+		}
+
+		$hasMagicMethod = $this->hasNativeMethod('__get') || $this->hasNativeMethod('__set') || $this->hasNativeMethod('__isset');
+		if ($hasMagicMethod) {
+			return true;
+		}
+
+		foreach ($this->getRequireExtendsTags() as $extendsTag) {
+			$type = $extendsTag->getType();
+			if (!$type instanceof ObjectType) {
+				continue;
+			}
+
+			$reflection = $type->getClassReflection();
+			if ($reflection === null) {
+				continue;
+			}
+
+			if (!$reflection->allowsDynamicPropertiesExtensions()) {
+				continue;
+			}
+
+			return true;
+		}
+
+		return false;
+	}
+
+	public function hasProperty(string $propertyName): bool
+	{
+		if ($this->isEnum()) {
+			return $this->hasNativeProperty($propertyName);
+		}
+
+		foreach ($this->propertiesClassReflectionExtensions as $i => $extension) {
+			if ($i > 0 && !$this->allowsDynamicPropertiesExtensions()) {
+				break;
+			}
+			if ($extension->hasProperty($this, $propertyName)) {
+				return true;
+			}
+		}
+
+		if ($this->requireExtendsPropertiesClassReflectionExtension->hasProperty($this, $propertyName)) {
+			return true;
+		}
+
+		return false;
+	}
+
+	public function hasMethod(string $methodName): bool
+	{
+		if (array_key_exists($methodName, $this->hasMethodCache)) {
+			return $this->hasMethodCache[$methodName];
+		}
+
+		foreach ($this->methodsClassReflectionExtensions as $extension) {
+			if ($extension->hasMethod($this, $methodName)) {
+				$this->hasMethodCache[$methodName] = true;
+
+				return true;
+			}
+		}
+
+		if ($this->requireExtendsMethodsClassReflectionExtension->hasMethod($this, $methodName)) {
+			$this->hasMethodCache[$methodName] = true;
+
+			return true;
+		}
+
+		$this->hasMethodCache[$methodName] = false;
+
+		return false;
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		$key = $methodName;
+		if ($scope->isInClass()) {
+			$key = sprintf('%s-%s', $key, $scope->getClassReflection()->getCacheKey());
+		}
+
+		if (!isset($this->methods[$key])) {
+			foreach ($this->methodsClassReflectionExtensions as $extension) {
+				if (!$extension->hasMethod($this, $methodName)) {
+					continue;
+				}
+
+				$method = $this->wrapExtendedMethod($extension->getMethod($this, $methodName));
+				if ($scope->canCallMethod($method)) {
+					return $this->methods[$key] = $method;
+				}
+				$this->methods[$key] = $method;
+			}
+		}
+
+		if (!isset($this->methods[$key])) {
+			if ($this->requireExtendsMethodsClassReflectionExtension->hasMethod($this, $methodName)) {
+				$method = $this->requireExtendsMethodsClassReflectionExtension->getMethod($this, $methodName);
+				$this->methods[$key] = $method;
+			}
+		}
+
+		if (!isset($this->methods[$key])) {
+			throw new MissingMethodFromReflectionException($this->getName(), $methodName);
+		}
+
+		return $this->methods[$key];
+	}
+
+	private function wrapExtendedMethod(MethodReflection $method): ExtendedMethodReflection
+	{
+		if ($method instanceof ExtendedMethodReflection) {
+			return $method;
+		}
+
+		return new WrappedExtendedMethodReflection($method);
+	}
+
+	private function wrapExtendedProperty(PropertyReflection $method): ExtendedPropertyReflection
+	{
+		if ($method instanceof ExtendedPropertyReflection) {
+			return $method;
+		}
+
+		return new WrappedExtendedPropertyReflection($method);
+	}
+
+	public function hasNativeMethod(string $methodName): bool
+	{
+		return $this->getPhpExtension()->hasNativeMethod($this, $methodName);
+	}
+
+	public function getNativeMethod(string $methodName): ExtendedMethodReflection
+	{
+		if (!$this->hasNativeMethod($methodName)) {
+			throw new MissingMethodFromReflectionException($this->getName(), $methodName);
+		}
+		return $this->getPhpExtension()->getNativeMethod($this, $methodName);
+	}
+
+	public function hasConstructor(): bool
+	{
+		return $this->findConstructor() !== null;
+	}
+
+	public function getConstructor(): ExtendedMethodReflection
+	{
+		$constructor = $this->findConstructor();
+		if ($constructor === null) {
+			throw new ShouldNotHappenException();
+		}
+		return $this->getNativeMethod($constructor->getName());
+	}
+
+	private function findConstructor(): ?ReflectionMethod
+	{
+		$constructor = $this->reflection->getConstructor();
+		if ($constructor === null) {
+			return null;
+		}
+
+		if ($this->phpVersion->supportsLegacyConstructor()) {
+			return $constructor;
+		}
+
+		if (strtolower($constructor->getName()) !== '__construct') {
+			return null;
+		}
+
+		return $constructor;
+	}
+
+	private function getPhpExtension(): PhpClassReflectionExtension
+	{
+		$extension = $this->methodsClassReflectionExtensions[0];
+		if (!$extension instanceof PhpClassReflectionExtension) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $extension;
+	}
+
+	/** @internal */
+	public function evictPrivateSymbols(): void
+	{
+		foreach ($this->constants as $name => $constant) {
+			if (!$constant->isPrivate()) {
+				continue;
+			}
+
+			unset($this->constants[$name]);
+		}
+		foreach ($this->properties as $name => $property) {
+			if (!$property->isPrivate()) {
+				continue;
+			}
+
+			unset($this->properties[$name]);
+		}
+		foreach ($this->methods as $name => $method) {
+			if (!$method->isPrivate()) {
+				continue;
+			}
+
+			unset($this->methods[$name]);
+		}
+		$this->getPhpExtension()->evictPrivateSymbols($this->getCacheKey());
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		if ($this->isEnum()) {
+			return $this->getNativeProperty($propertyName);
+		}
+
+		$key = $propertyName;
+		if ($scope->isInClass()) {
+			$key = sprintf('%s-%s', $key, $scope->getClassReflection()->getCacheKey());
+		}
+
+		if (!isset($this->properties[$key])) {
+			foreach ($this->propertiesClassReflectionExtensions as $i => $extension) {
+				if ($i > 0 && !$this->allowsDynamicPropertiesExtensions()) {
+					break;
+				}
+
+				if (!$extension->hasProperty($this, $propertyName)) {
+					continue;
+				}
+
+				$property = $this->wrapExtendedProperty($extension->getProperty($this, $propertyName));
+				if ($scope->canReadProperty($property)) {
+					return $this->properties[$key] = $property;
+				}
+				$this->properties[$key] = $property;
+			}
+		}
+
+		if (!isset($this->properties[$key])) {
+			if ($this->requireExtendsPropertiesClassReflectionExtension->hasProperty($this, $propertyName)) {
+				$property = $this->requireExtendsPropertiesClassReflectionExtension->getProperty($this, $propertyName);
+				$this->properties[$key] = $property;
+			}
+		}
+
+		if (!isset($this->properties[$key])) {
+			throw new MissingPropertyFromReflectionException($this->getName(), $propertyName);
+		}
+
+		return $this->properties[$key];
+	}
+
+	public function hasNativeProperty(string $propertyName): bool
+	{
+		return $this->getPhpExtension()->hasProperty($this, $propertyName);
+	}
+
+	public function getNativeProperty(string $propertyName): PhpPropertyReflection
+	{
+		if (!$this->hasNativeProperty($propertyName)) {
+			throw new MissingPropertyFromReflectionException($this->getName(), $propertyName);
+		}
+
+		return $this->getPhpExtension()->getNativeProperty($this, $propertyName);
+	}
+
+	public function isAbstract(): bool
+	{
+		return $this->reflection->isAbstract();
+	}
+
+	public function isInterface(): bool
+	{
+		return $this->reflection->isInterface();
+	}
+
+	public function isTrait(): bool
+	{
+		return $this->reflection->isTrait();
+	}
+
+	/**
+	 * @phpstan-assert-if-true ReflectionEnum $this->reflection
+	 */
+	public function isEnum(): bool
+	{
+		return $this->reflection instanceof ReflectionEnum && $this->reflection->isEnum();
+	}
+
+	/**
+	 * @return 'Interface'|'Trait'|'Enum'|'Class'
+	 */
+	public function getClassTypeDescription(): string
+	{
+		if ($this->isInterface()) {
+			return 'Interface';
+		} elseif ($this->isTrait()) {
+			return 'Trait';
+		} elseif ($this->isEnum()) {
+			return 'Enum';
+		}
+
+		return 'Class';
+	}
+
+	public function isReadOnly(): bool
+	{
+		return $this->reflection->isReadOnly();
+	}
+
+	public function isBackedEnum(): bool
+	{
+		if (!$this->reflection instanceof ReflectionEnum) {
+			return false;
+		}
+
+		return $this->reflection->isBacked();
+	}
+
+	public function getBackedEnumType(): ?Type
+	{
+		if (!$this->reflection instanceof ReflectionEnum) {
+			return null;
+		}
+
+		if (!$this->reflection->isBacked()) {
+			return null;
+		}
+
+		return TypehintHelper::decideTypeFromReflection($this->reflection->getBackingType());
+	}
+
+	public function hasEnumCase(string $name): bool
+	{
+		if (!$this->isEnum()) {
+			return false;
+		}
+
+		return $this->reflection->hasCase($name);
+	}
+
+	/**
+	 * @return array<string, EnumCaseReflection>
+	 */
+	public function getEnumCases(): array
+	{
+		if (!$this->isEnum()) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($this->enumCases !== null) {
+			return $this->enumCases;
+		}
+
+		$cases = [];
+		$initializerExprContext = InitializerExprContext::fromClassReflection($this);
+		foreach ($this->reflection->getCases() as $case) {
+			$valueType = null;
+			if ($case instanceof ReflectionEnumBackedCase) {
+				$valueType = $this->initializerExprTypeResolver->getType($case->getValueExpression(), $initializerExprContext);
+			}
+			$caseName = $case->getName();
+			$cases[$caseName] = new EnumCaseReflection($this, $case, $valueType, $this->attributeReflectionFactory->fromNativeReflection($case->getAttributes(), InitializerExprContext::fromClass($this->getName(), $this->getFileName())));
+		}
+
+		return $this->enumCases = $cases;
+	}
+
+	public function getEnumCase(string $name): EnumCaseReflection
+	{
+		if (!$this->hasEnumCase($name)) {
+			throw new ShouldNotHappenException(sprintf('Enum case %s::%s does not exist.', $this->getDisplayName(), $name));
+		}
+
+		if (!$this->reflection instanceof ReflectionEnum) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($this->enumCases !== null && array_key_exists($name, $this->enumCases)) {
+			return $this->enumCases[$name];
+		}
+
+		$case = $this->reflection->getCase($name);
+		$valueType = null;
+		if ($case instanceof ReflectionEnumBackedCase) {
+			$valueType = $this->initializerExprTypeResolver->getType($case->getValueExpression(), InitializerExprContext::fromClassReflection($this));
+		}
+
+		return new EnumCaseReflection($this, $case, $valueType, $this->attributeReflectionFactory->fromNativeReflection($case->getAttributes(), InitializerExprContext::fromClass($this->getName(), $this->getFileName())));
+	}
+
+	public function isClass(): bool
+	{
+		return !$this->isInterface() && !$this->isTrait() && !$this->isEnum();
+	}
+
+	public function isAnonymous(): bool
+	{
+		return $this->anonymousFilename !== null;
+	}
+
+	public function is(string $className): bool
+	{
+		return $this->getName() === $className || $this->isSubclassOf($className);
+	}
+
+	public function isSubclassOf(string $className): bool
+	{
+		if (isset($this->subclasses[$className])) {
+			return $this->subclasses[$className];
+		}
+
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return $this->subclasses[$className] = false;
+		}
+
+		try {
+			return $this->subclasses[$className] = $this->reflection->isSubclassOf($className);
+		} catch (ReflectionException) {
+			return $this->subclasses[$className] = false;
+		}
+	}
+
+	public function implementsInterface(string $className): bool
+	{
+		try {
+			return $this->reflection->implementsInterface($className);
+		} catch (ReflectionException) {
+			return false;
+		}
+	}
+
+	/**
+	 * @return list<ClassReflection>
+	 */
+	public function getParents(): array
+	{
+		$parents = [];
+		$parent = $this->getParentClass();
+		while ($parent !== null) {
+			$parents[] = $parent;
+			$parent = $parent->getParentClass();
+		}
+
+		return $parents;
+	}
+
+	/**
+	 * @return array<string, ClassReflection>
+	 */
+	public function getInterfaces(): array
+	{
+		if ($this->cachedInterfaces !== null) {
+			return $this->cachedInterfaces;
+		}
+
+		$interfaces = $this->getImmediateInterfaces();
+		$immediateInterfaces = $interfaces;
+		$parent = $this->getParentClass();
+		while ($parent !== null) {
+			foreach ($parent->getImmediateInterfaces() as $parentInterface) {
+				$interfaces[$parentInterface->getName()] = $parentInterface;
+				foreach ($this->collectInterfaces($parentInterface) as $parentInterfaceInterface) {
+					$interfaces[$parentInterfaceInterface->getName()] = $parentInterfaceInterface;
+				}
+			}
+
+			$parent = $parent->getParentClass();
+		}
+
+		foreach ($immediateInterfaces as $immediateInterface) {
+			foreach ($this->collectInterfaces($immediateInterface) as $interfaceInterface) {
+				$interfaces[$interfaceInterface->getName()] = $interfaceInterface;
+			}
+		}
+
+		$this->cachedInterfaces = $interfaces;
+
+		return $interfaces;
+	}
+
+	/**
+	 * @return array<string, ClassReflection>
+	 */
+	private function collectInterfaces(ClassReflection $interface): array
+	{
+		$interfaces = [];
+		foreach ($interface->getImmediateInterfaces() as $immediateInterface) {
+			$interfaces[$immediateInterface->getName()] = $immediateInterface;
+			foreach ($this->collectInterfaces($immediateInterface) as $immediateInterfaceInterface) {
+				$interfaces[$immediateInterfaceInterface->getName()] = $immediateInterfaceInterface;
+			}
+		}
+
+		return $interfaces;
+	}
+
+	/**
+	 * @return array<string, ClassReflection>
+	 */
+	public function getImmediateInterfaces(): array
+	{
+		$indirectInterfaceNames = [];
+		$parent = $this->getParentClass();
+		while ($parent !== null) {
+			foreach ($parent->getNativeReflection()->getInterfaceNames() as $parentInterfaceName) {
+				$indirectInterfaceNames[] = $parentInterfaceName;
+			}
+
+			$parent = $parent->getParentClass();
+		}
+
+		foreach ($this->getNativeReflection()->getInterfaces() as $interfaceInterface) {
+			foreach ($interfaceInterface->getInterfaceNames() as $interfaceInterfaceName) {
+				$indirectInterfaceNames[] = $interfaceInterfaceName;
+			}
+		}
+
+		if ($this->reflection->isInterface()) {
+			$implementsTags = $this->getExtendsTags();
+		} else {
+			$implementsTags = $this->getImplementsTags();
+		}
+
+		$immediateInterfaceNames = array_diff($this->getNativeReflection()->getInterfaceNames(), $indirectInterfaceNames);
+		$immediateInterfaces = [];
+		foreach ($immediateInterfaceNames as $immediateInterfaceName) {
+			if (!$this->reflectionProvider->hasClass($immediateInterfaceName)) {
+				continue;
+			}
+
+			$immediateInterface = $this->reflectionProvider->getClass($immediateInterfaceName);
+			if (array_key_exists($immediateInterface->getName(), $implementsTags)) {
+				$implementsTag = $implementsTags[$immediateInterface->getName()];
+				$implementedType = $implementsTag->getType();
+				if ($this->isGeneric()) {
+					$implementedType = TemplateTypeHelper::resolveTemplateTypes(
+						$implementedType,
+						$this->getPossiblyIncompleteActiveTemplateTypeMap(),
+						$this->getCallSiteVarianceMap(),
+						TemplateTypeVariance::createStatic(),
+						true,
+					);
+				}
+
+				if (
+					$implementedType instanceof GenericObjectType
+					&& $implementedType->getClassReflection() !== null
+				) {
+					$immediateInterfaces[$immediateInterface->getName()] = $implementedType->getClassReflection();
+					continue;
+				}
+			}
+
+			if ($immediateInterface->isGeneric()) {
+				$immediateInterfaces[$immediateInterface->getName()] = $immediateInterface->withTypes(
+					array_values($immediateInterface->getTemplateTypeMap()->map(static fn (): Type => new ErrorType())->getTypes()),
+				);
+				continue;
+			}
+
+			$immediateInterfaces[$immediateInterface->getName()] = $immediateInterface;
+		}
+
+		return $immediateInterfaces;
+	}
+
+	/**
+	 * @return array<string, ClassReflection>
+	 */
+	public function getTraits(bool $recursive = false): array
+	{
+		$traits = [];
+
+		if ($recursive) {
+			foreach ($this->collectTraits($this->getNativeReflection()) as $trait) {
+				$traits[$trait->getName()] = $trait;
+			}
+		} else {
+			$traits = $this->getNativeReflection()->getTraits();
+		}
+
+		$traits = array_map(fn (ReflectionClass $trait): ClassReflection => $this->reflectionProvider->getClass($trait->getName()), $traits);
+
+		if ($recursive) {
+			$parentClass = $this->getNativeReflection()->getParentClass();
+
+			if ($parentClass !== false) {
+				return array_merge(
+					$traits,
+					$this->reflectionProvider->getClass($parentClass->getName())->getTraits(true),
+				);
+			}
+		}
+
+		return $traits;
+	}
+
+	/**
+	 * @return list<class-string>
+	 */
+	public function getParentClassesNames(): array
+	{
+		$parentNames = [];
+		$parentClass = $this->getParentClass();
+		while ($parentClass !== null) {
+			$parentNames[] = $parentClass->getName();
+			$parentClass = $parentClass->getParentClass();
+		}
+
+		return $parentNames;
+	}
+
+	public function hasConstant(string $name): bool
+	{
+		if (!$this->getNativeReflection()->hasConstant($name)) {
+			return false;
+		}
+
+		$reflectionConstant = $this->getNativeReflection()->getReflectionConstant($name);
+		if ($reflectionConstant === false) {
+			return false;
+		}
+
+		return $this->reflectionProvider->hasClass($reflectionConstant->getDeclaringClass()->getName());
+	}
+
+	public function getConstant(string $name): ClassConstantReflection
+	{
+		if (!isset($this->constants[$name])) {
+			$reflectionConstant = $this->getNativeReflection()->getReflectionConstant($name);
+			if ($reflectionConstant === false) {
+				throw new MissingConstantFromReflectionException($this->getName(), $name);
+			}
+
+			$declaringClass = $this->reflectionProvider->getClass($reflectionConstant->getDeclaringClass()->getName());
+			$fileName = $declaringClass->getFileName();
+			$phpDocType = null;
+			$resolvedPhpDoc = $this->stubPhpDocProvider->findClassConstantPhpDoc(
+				$declaringClass->getName(),
+				$name,
+			);
+			if ($resolvedPhpDoc === null) {
+				$docComment = null;
+				if ($reflectionConstant->getDocComment() !== false) {
+					$docComment = $reflectionConstant->getDocComment();
+				}
+				$resolvedPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForConstant(
+					$docComment,
+					$declaringClass,
+					$fileName,
+					$name,
+				);
+			}
+
+			$deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag() !== null ? $resolvedPhpDoc->getDeprecatedTag()->getMessage() : null;
+			$isDeprecated = $resolvedPhpDoc->isDeprecated();
+			$isInternal = $resolvedPhpDoc->isInternal();
+			$isFinal = $resolvedPhpDoc->isFinal();
+			$varTags = $resolvedPhpDoc->getVarTags();
+			if (isset($varTags[0]) && count($varTags) === 1) {
+				$phpDocType = $varTags[0]->getType();
+			}
+
+			$nativeType = null;
+			if ($reflectionConstant->getType() !== null) {
+				$nativeType = TypehintHelper::decideTypeFromReflection($reflectionConstant->getType(), null, $declaringClass);
+			} elseif ($this->signatureMapProvider->hasClassConstantMetadata($declaringClass->getName(), $name)) {
+				$nativeType = $this->signatureMapProvider->getClassConstantMetadata($declaringClass->getName(), $name)['nativeType'];
+			}
+
+			$this->constants[$name] = new RealClassClassConstantReflection(
+				$this->initializerExprTypeResolver,
+				$declaringClass,
+				$reflectionConstant,
+				$nativeType,
+				$phpDocType,
+				$deprecatedDescription,
+				$isDeprecated,
+				$isInternal,
+				$isFinal,
+				$this->attributeReflectionFactory->fromNativeReflection($reflectionConstant->getAttributes(), InitializerExprContext::fromClass($declaringClass->getName(), $fileName)),
+			);
+		}
+		return $this->constants[$name];
+	}
+
+	public function hasTraitUse(string $traitName): bool
+	{
+		return in_array($traitName, $this->getTraitNames(), true);
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	private function getTraitNames(): array
+	{
+		$class = $this->reflection;
+		$traitNames = array_map(static fn (ReflectionClass $class) => $class->getName(), $this->collectTraits($class));
+		while ($class->getParentClass() !== false) {
+			$traitNames = array_values(array_unique(array_merge($traitNames, $class->getParentClass()->getTraitNames())));
+			$class = $class->getParentClass();
+		}
+
+		return $traitNames;
+	}
+
+	/**
+	 * @return array<string, TypeAlias>
+	 */
+	public function getTypeAliases(): array
+	{
+		if ($this->typeAliases === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			if ($resolvedPhpDoc === null) {
+				return $this->typeAliases = [];
+			}
+
+			$typeAliasImportTags = $resolvedPhpDoc->getTypeAliasImportTags();
+			$typeAliasTags = $resolvedPhpDoc->getTypeAliasTags();
+
+			// prevent circular imports
+			if (array_key_exists($this->getName(), self::$resolvingTypeAliasImports)) {
+				throw new CircularTypeAliasDefinitionException();
+			}
+
+			self::$resolvingTypeAliasImports[$this->getName()] = true;
+
+			$importedAliases = array_map(function (TypeAliasImportTag $typeAliasImportTag): ?TypeAlias {
+				$importedAlias = $typeAliasImportTag->getImportedAlias();
+				$importedFromClassName = $typeAliasImportTag->getImportedFrom();
+
+				if (!$this->reflectionProvider->hasClass($importedFromClassName)) {
+					return null;
+				}
+
+				$importedFromReflection = $this->reflectionProvider->getClass($importedFromClassName);
+
+				try {
+					$typeAliases = $importedFromReflection->getTypeAliases();
+				} catch (CircularTypeAliasDefinitionException) {
+					return TypeAlias::invalid();
+				}
+
+				if (!array_key_exists($importedAlias, $typeAliases)) {
+					return null;
+				}
+
+				return $typeAliases[$importedAlias];
+			}, $typeAliasImportTags);
+
+			unset(self::$resolvingTypeAliasImports[$this->getName()]);
+
+			$localAliases = array_map(static fn (TypeAliasTag $typeAliasTag): TypeAlias => $typeAliasTag->getTypeAlias(), $typeAliasTags);
+
+			$this->typeAliases = array_filter(
+				array_merge($importedAliases, $localAliases),
+				static fn (?TypeAlias $typeAlias): bool => $typeAlias !== null,
+			);
+		}
+
+		return $this->typeAliases;
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->deprecatedDescription === null && $this->isDeprecated()) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			if ($resolvedPhpDoc !== null && $resolvedPhpDoc->getDeprecatedTag() !== null) {
+				$this->deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag()->getMessage();
+			}
+		}
+
+		return $this->deprecatedDescription;
+	}
+
+	public function isDeprecated(): bool
+	{
+		if ($this->isDeprecated === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->isDeprecated = $resolvedPhpDoc !== null && $resolvedPhpDoc->isDeprecated();
+		}
+
+		return $this->isDeprecated;
+	}
+
+	public function isBuiltin(): bool
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function isInternal(): bool
+	{
+		if ($this->isInternal === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->isInternal = $resolvedPhpDoc !== null && $resolvedPhpDoc->isInternal();
+		}
+
+		return $this->isInternal;
+	}
+
+	public function isFinal(): bool
+	{
+		if ($this->isFinalByKeyword()) {
+			return true;
+		}
+
+		if ($this->isFinal === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->isFinal = $resolvedPhpDoc !== null && $resolvedPhpDoc->isFinal();
+		}
+
+		return $this->isFinal;
+	}
+
+	public function isImmutable(): bool
+	{
+		if ($this->isImmutable === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->isImmutable = $resolvedPhpDoc !== null && ($resolvedPhpDoc->isImmutable() || $resolvedPhpDoc->isReadOnly());
+
+			$parentClass = $this->getParentClass();
+			if ($parentClass !== null && !$this->isImmutable) {
+				$this->isImmutable = $parentClass->isImmutable();
+			}
+		}
+
+		return $this->isImmutable;
+	}
+
+	public function hasConsistentConstructor(): bool
+	{
+		if ($this->hasConsistentConstructor === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->hasConsistentConstructor = $resolvedPhpDoc !== null && $resolvedPhpDoc->hasConsistentConstructor();
+		}
+
+		return $this->hasConsistentConstructor;
+	}
+
+	public function acceptsNamedArguments(): bool
+	{
+		if ($this->acceptsNamedArguments === null) {
+			$resolvedPhpDoc = $this->getResolvedPhpDoc();
+			$this->acceptsNamedArguments = $resolvedPhpDoc === null || $resolvedPhpDoc->acceptsNamedArguments();
+		}
+
+		return $this->acceptsNamedArguments;
+	}
+
+	public function isFinalByKeyword(): bool
+	{
+		if ($this->isAnonymous()) {
+			return true;
+		}
+
+		return $this->reflection->isFinal();
+	}
+
+	public function isAttributeClass(): bool
+	{
+		return $this->findAttributeFlags() !== null;
+	}
+
+	private function findAttributeFlags(): ?int
+	{
+		if ($this->isInterface() || $this->isTrait() || $this->isEnum()) {
+			return null;
+		}
+
+		$nativeAttributes = $this->reflection->getAttributes(Attribute::class);
+		if (count($nativeAttributes) === 1) {
+			if (!$this->reflectionProvider->hasClass(Attribute::class)) {
+				return null;
+			}
+
+			$attributeClass = $this->reflectionProvider->getClass(Attribute::class);
+			$arguments = [];
+			foreach ($nativeAttributes[0]->getArgumentsExpressions() as $i => $expression) {
+				$arguments[] = new Arg($expression, false, false, [], is_int($i) ? null : new Identifier($i));
+			}
+
+			if (!$attributeClass->hasConstructor()) {
+				return null;
+			}
+			$attributeConstructor = $attributeClass->getConstructor();
+			$attributeConstructorVariant = $attributeConstructor->getOnlyVariant();
+
+			if (count($arguments) === 0) {
+				$flagType = $attributeConstructorVariant->getParameters()[0]->getDefaultValue();
+			} else {
+				$staticCall = ArgumentsNormalizer::reorderStaticCallArguments(
+					$attributeConstructorVariant,
+					new StaticCall(new FullyQualified(Attribute::class), $attributeConstructor->getName(), $arguments),
+				);
+				if ($staticCall === null) {
+					return null;
+				}
+				$flagExpr = $staticCall->getArgs()[0]->value;
+				$flagType = $this->initializerExprTypeResolver->getType($flagExpr, InitializerExprContext::fromClassReflection($this));
+			}
+
+			if (!$flagType instanceof ConstantIntegerType) {
+				return null;
+			}
+
+			return $flagType->getValue();
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array
+	{
+		return $this->attributeReflectionFactory->fromNativeReflection($this->reflection->getAttributes(), InitializerExprContext::fromClass($this->getName(), $this->getFileName()));
+	}
+
+	public function getAttributeClassFlags(): int
+	{
+		$flags = $this->findAttributeFlags();
+		if ($flags === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $flags;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		if ($this->templateTypeMap !== null) {
+			return $this->templateTypeMap;
+		}
+
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			$this->templateTypeMap = TemplateTypeMap::createEmpty();
+			return $this->templateTypeMap;
+		}
+
+		$templateTypeScope = TemplateTypeScope::createWithClass($this->getName());
+
+		$templateTypeMap = new TemplateTypeMap(array_map(static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag), $this->getTemplateTags()));
+
+		$this->templateTypeMap = $templateTypeMap;
+
+		return $templateTypeMap;
+	}
+
+	public function getActiveTemplateTypeMap(): TemplateTypeMap
+	{
+		if ($this->activeTemplateTypeMap !== null) {
+			return $this->activeTemplateTypeMap;
+		}
+		$resolved = $this->resolvedTemplateTypeMap;
+		if ($resolved !== null) {
+			$templateTypeMap = $this->getTemplateTypeMap();
+			return $this->activeTemplateTypeMap = $resolved->map(static function (string $name, Type $type) use ($templateTypeMap): Type {
+				if ($type instanceof ErrorType) {
+					$templateType = $templateTypeMap->getType($name);
+					if ($templateType !== null) {
+						return TemplateTypeHelper::resolveToDefaults($templateType);
+					}
+				}
+
+				return $type;
+			});
+		}
+
+		return $this->activeTemplateTypeMap = $this->getTemplateTypeMap();
+	}
+
+	public function getPossiblyIncompleteActiveTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->resolvedTemplateTypeMap ?? $this->getTemplateTypeMap();
+	}
+
+	private function getDefaultCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		if ($this->defaultCallSiteVarianceMap !== null) {
+			return $this->defaultCallSiteVarianceMap;
+		}
+
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			$this->defaultCallSiteVarianceMap = TemplateTypeVarianceMap::createEmpty();
+			return $this->defaultCallSiteVarianceMap;
+		}
+
+		$map = [];
+		foreach ($this->getTemplateTags() as $templateTag) {
+			$map[$templateTag->getName()] = TemplateTypeVariance::createInvariant();
+		}
+
+		$this->defaultCallSiteVarianceMap = new TemplateTypeVarianceMap($map);
+		return $this->defaultCallSiteVarianceMap;
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->callSiteVarianceMap ??= $this->resolvedCallSiteVarianceMap ?? $this->getDefaultCallSiteVarianceMap();
+	}
+
+	public function isGeneric(): bool
+	{
+		if ($this->isGeneric === null) {
+			if ($this->isEnum()) {
+				return $this->isGeneric = false;
+			}
+
+			$this->isGeneric = count($this->getTemplateTags()) > 0;
+		}
+
+		return $this->isGeneric;
+	}
+
+	/**
+	 * @param array<int, Type> $types
+	 */
+	public function typeMapFromList(array $types): TemplateTypeMap
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$map = [];
+		$i = 0;
+		foreach ($resolvedPhpDoc->getTemplateTags() as $tag) {
+			$map[$tag->getName()] = $types[$i] ?? $tag->getDefault() ?? $tag->getBound();
+			$i++;
+		}
+
+		return new TemplateTypeMap($map);
+	}
+
+	/**
+	 * @param array<int, TemplateTypeVariance> $variances
+	 */
+	public function varianceMapFromList(array $variances): TemplateTypeVarianceMap
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return new TemplateTypeVarianceMap([]);
+		}
+
+		$map = [];
+		$i = 0;
+		foreach ($resolvedPhpDoc->getTemplateTags() as $tag) {
+			$map[$tag->getName()] = $variances[$i] ?? TemplateTypeVariance::createInvariant();
+			$i++;
+		}
+
+		return new TemplateTypeVarianceMap($map);
+	}
+
+	/** @return list<Type> */
+	public function typeMapToList(TemplateTypeMap $typeMap): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		$list = [];
+		foreach ($resolvedPhpDoc->getTemplateTags() as $tag) {
+			$list[] = $typeMap->getType($tag->getName()) ?? $tag->getDefault() ?? $tag->getBound();
+		}
+
+		return $list;
+	}
+
+	/** @return list<TemplateTypeVariance> */
+	public function varianceMapToList(TemplateTypeVarianceMap $varianceMap): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		$list = [];
+		foreach ($resolvedPhpDoc->getTemplateTags() as $tag) {
+			$list[] = $varianceMap->getVariance($tag->getName()) ?? TemplateTypeVariance::createInvariant();
+		}
+
+		return $list;
+	}
+
+	/**
+	 * @param array<int, Type> $types
+	 */
+	public function withTypes(array $types): self
+	{
+		return new self(
+			$this->reflectionProvider,
+			$this->initializerExprTypeResolver,
+			$this->fileTypeMapper,
+			$this->stubPhpDocProvider,
+			$this->phpDocInheritanceResolver,
+			$this->phpVersion,
+			$this->signatureMapProvider,
+			$this->attributeReflectionFactory,
+			$this->propertiesClassReflectionExtensions,
+			$this->methodsClassReflectionExtensions,
+			$this->allowedSubTypesClassReflectionExtensions,
+			$this->requireExtendsPropertiesClassReflectionExtension,
+			$this->requireExtendsMethodsClassReflectionExtension,
+			$this->displayName,
+			$this->reflection,
+			$this->anonymousFilename,
+			$this->typeMapFromList($types),
+			$this->stubPhpDocBlock,
+			$this->universalObjectCratesClasses,
+			null,
+			$this->resolvedCallSiteVarianceMap,
+		);
+	}
+
+	/**
+	 * @param array<int, TemplateTypeVariance> $variances
+	 */
+	public function withVariances(array $variances): self
+	{
+		return new self(
+			$this->reflectionProvider,
+			$this->initializerExprTypeResolver,
+			$this->fileTypeMapper,
+			$this->stubPhpDocProvider,
+			$this->phpDocInheritanceResolver,
+			$this->phpVersion,
+			$this->signatureMapProvider,
+			$this->attributeReflectionFactory,
+			$this->propertiesClassReflectionExtensions,
+			$this->methodsClassReflectionExtensions,
+			$this->allowedSubTypesClassReflectionExtensions,
+			$this->requireExtendsPropertiesClassReflectionExtension,
+			$this->requireExtendsMethodsClassReflectionExtension,
+			$this->displayName,
+			$this->reflection,
+			$this->anonymousFilename,
+			$this->resolvedTemplateTypeMap,
+			$this->stubPhpDocBlock,
+			$this->universalObjectCratesClasses,
+			null,
+			$this->varianceMapFromList($variances),
+		);
+	}
+
+	public function getResolvedPhpDoc(): ?ResolvedPhpDocBlock
+	{
+		if ($this->stubPhpDocBlock !== null) {
+			return $this->stubPhpDocBlock;
+		}
+
+		$fileName = $this->getFileName();
+		if (is_bool($this->reflectionDocComment)) {
+			$docComment = $this->reflection->getDocComment();
+			$this->reflectionDocComment = $docComment !== false ? $docComment : null;
+		}
+
+		if ($this->reflectionDocComment === null) {
+			return null;
+		}
+
+		if ($this->resolvedPhpDocBlock !== false) {
+			return $this->resolvedPhpDocBlock;
+		}
+
+		return $this->resolvedPhpDocBlock = $this->fileTypeMapper->getResolvedPhpDoc($fileName, $this->getName(), null, null, $this->reflectionDocComment);
+	}
+
+	public function getTraitContextResolvedPhpDoc(self $implementingClass): ?ResolvedPhpDocBlock
+	{
+		if (!$this->isTrait()) {
+			throw new ShouldNotHappenException();
+		}
+		if ($implementingClass->isTrait()) {
+			throw new ShouldNotHappenException();
+		}
+		$fileName = $this->getFileName();
+		if (is_bool($this->reflectionDocComment)) {
+			$docComment = $this->reflection->getDocComment();
+			$this->reflectionDocComment = $docComment !== false ? $docComment : null;
+		}
+
+		if ($this->reflectionDocComment === null) {
+			return null;
+		}
+
+		if ($this->traitContextResolvedPhpDocBlock !== false) {
+			return $this->traitContextResolvedPhpDocBlock;
+		}
+
+		return $this->traitContextResolvedPhpDocBlock = $this->fileTypeMapper->getResolvedPhpDoc($fileName, $implementingClass->getName(), $this->getName(), null, $this->reflectionDocComment);
+	}
+
+	private function getFirstExtendsTag(): ?ExtendsTag
+	{
+		foreach ($this->getExtendsTags() as $tag) {
+			return $tag;
+		}
+
+		return null;
+	}
+
+	/** @return array<string, ExtendsTag> */
+	public function getExtendsTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getExtendsTags();
+	}
+
+	/** @return array<string, ImplementsTag> */
+	public function getImplementsTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getImplementsTags();
+	}
+
+	/** @return array<string,TemplateTag> */
+	public function getTemplateTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getTemplateTags();
+	}
+
+	/**
+	 * @return array<string,ClassReflection>
+	 */
+	public function getAncestors(): array
+	{
+		$ancestors = $this->ancestors;
+
+		if ($ancestors === null) {
+			$ancestors = [
+				$this->getName() => $this,
+			];
+
+			$addToAncestors = static function (string $name, ClassReflection $classReflection) use (&$ancestors): void {
+				if (array_key_exists($name, $ancestors)) {
+					return;
+				}
+
+				$ancestors[$name] = $classReflection;
+			};
+
+			foreach ($this->getInterfaces() as $interface) {
+				$addToAncestors($interface->getName(), $interface);
+				foreach ($interface->getAncestors() as $name => $ancestor) {
+					$addToAncestors($name, $ancestor);
+				}
+			}
+
+			foreach ($this->getTraits() as $trait) {
+				$addToAncestors($trait->getName(), $trait);
+				foreach ($trait->getAncestors() as $name => $ancestor) {
+					$addToAncestors($name, $ancestor);
+				}
+			}
+
+			$parent = $this->getParentClass();
+			if ($parent !== null) {
+				$addToAncestors($parent->getName(), $parent);
+				foreach ($parent->getAncestors() as $name => $ancestor) {
+					$addToAncestors($name, $ancestor);
+				}
+			}
+
+			$this->ancestors = $ancestors;
+		}
+
+		return $ancestors;
+	}
+
+	public function getAncestorWithClassName(string $className): ?self
+	{
+		return $this->getAncestors()[$className] ?? null;
+	}
+
+	/**
+	 * @param string[] $ancestorClasses
+	 */
+	private function isValidAncestorType(Type $type, array $ancestorClasses): bool
+	{
+		if (!$type instanceof GenericObjectType) {
+			return false;
+		}
+
+		$reflection = $type->getClassReflection();
+		if ($reflection === null) {
+			return false;
+		}
+
+		return in_array($reflection->getName(), $ancestorClasses, true);
+	}
+
+	/**
+	 * @return array<MixinTag>
+	 */
+	public function getMixinTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getMixinTags();
+	}
+
+	/**
+	 * @return array<RequireExtendsTag>
+	 */
+	public function getRequireExtendsTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getRequireExtendsTags();
+	}
+
+	/**
+	 * @return array<RequireImplementsTag>
+	 */
+	public function getRequireImplementsTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getRequireImplementsTags();
+	}
+
+	/**
+	 * @return array<string, PropertyTag>
+	 */
+	public function getPropertyTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getPropertyTags();
+	}
+
+	/**
+	 * @return array<string, MethodTag>
+	 */
+	public function getMethodTags(): array
+	{
+		$resolvedPhpDoc = $this->getResolvedPhpDoc();
+		if ($resolvedPhpDoc === null) {
+			return [];
+		}
+
+		return $resolvedPhpDoc->getMethodTags();
+	}
+
+	/**
+	 * @return list<Type>
+	 */
+	public function getResolvedMixinTypes(): array
+	{
+		$types = [];
+		foreach ($this->getMixinTags() as $mixinTag) {
+			if (!$this->isGeneric()) {
+				$types[] = $mixinTag->getType();
+				continue;
+			}
+
+			$types[] = TemplateTypeHelper::resolveTemplateTypes(
+				$mixinTag->getType(),
+				$this->getActiveTemplateTypeMap(),
+				$this->getCallSiteVarianceMap(),
+				TemplateTypeVariance::createStatic(),
+			);
+		}
+
+		return $types;
+	}
+
+	/**
+	 * @return array<Type>|null
+	 */
+	public function getAllowedSubTypes(): ?array
+	{
+		foreach ($this->allowedSubTypesClassReflectionExtensions as $allowedSubTypesClassReflectionExtension) {
+			if ($allowedSubTypesClassReflectionExtension->supports($this)) {
+				return $allowedSubTypesClassReflectionExtension->getAllowedSubTypes($this);
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/ClassReflectionExtensionRegistry.php b/src/Reflection/ClassReflectionExtensionRegistry.php
new file mode 100644
index 00000000..ec34e423
--- /dev/null
+++ b/src/Reflection/ClassReflectionExtensionRegistry.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\RequireExtension\RequireExtendsMethodsClassReflectionExtension;
+use PHPStan\Reflection\RequireExtension\RequireExtendsPropertiesClassReflectionExtension;
+
+final class ClassReflectionExtensionRegistry
+{
+
+	/**
+	 * @param PropertiesClassReflectionExtension[] $propertiesClassReflectionExtensions
+	 * @param MethodsClassReflectionExtension[] $methodsClassReflectionExtensions
+	 * @param AllowedSubTypesClassReflectionExtension[] $allowedSubTypesClassReflectionExtensions
+	 */
+	public function __construct(
+		private array $propertiesClassReflectionExtensions,
+		private array $methodsClassReflectionExtensions,
+		private array $allowedSubTypesClassReflectionExtensions,
+		private RequireExtendsPropertiesClassReflectionExtension $requireExtendsPropertiesClassReflectionExtension,
+		private RequireExtendsMethodsClassReflectionExtension $requireExtendsMethodsClassReflectionExtension,
+	)
+	{
+	}
+
+	/**
+	 * @return PropertiesClassReflectionExtension[]
+	 */
+	public function getPropertiesClassReflectionExtensions(): array
+	{
+		return $this->propertiesClassReflectionExtensions;
+	}
+
+	/**
+	 * @return MethodsClassReflectionExtension[]
+	 */
+	public function getMethodsClassReflectionExtensions(): array
+	{
+		return $this->methodsClassReflectionExtensions;
+	}
+
+	/**
+	 * @return AllowedSubTypesClassReflectionExtension[]
+	 */
+	public function getAllowedSubTypesClassReflectionExtensions(): array
+	{
+		return $this->allowedSubTypesClassReflectionExtensions;
+	}
+
+	public function getRequireExtendsPropertyClassReflectionExtension(): RequireExtendsPropertiesClassReflectionExtension
+	{
+		return $this->requireExtendsPropertiesClassReflectionExtension;
+	}
+
+	public function getRequireExtendsMethodsClassReflectionExtension(): RequireExtendsMethodsClassReflectionExtension
+	{
+		return $this->requireExtendsMethodsClassReflectionExtension;
+	}
+
+}
diff --git a/src/Reflection/Constant/RuntimeConstantReflection.php b/src/Reflection/Constant/RuntimeConstantReflection.php
new file mode 100644
index 00000000..d634091e
--- /dev/null
+++ b/src/Reflection/Constant/RuntimeConstantReflection.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Reflection\Constant;
+return;
+
+use PHPStan\Reflection\ConstantReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+final class RuntimeConstantReflection implements ConstantReflection
+{
+
+	public function __construct(
+		private string $name,
+		private Type $valueType,
+		private ?string $fileName,
+		private TrinaryLogic $isDeprecated,
+		private ?string $deprecatedDescription,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getValueType(): Type
+	{
+		return $this->valueType;
+	}
+
+	public function getFileName(): ?string
+	{
+		return $this->fileName;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->isDeprecated;
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->deprecatedDescription;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+}
diff --git a/src/Reflection/ConstantNameHelper.php b/src/Reflection/ConstantNameHelper.php
new file mode 100644
index 00000000..84c1640a
--- /dev/null
+++ b/src/Reflection/ConstantNameHelper.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use function array_filter;
+use function array_slice;
+use function end;
+use function explode;
+use function implode;
+use function str_contains;
+use function strtolower;
+
+final class ConstantNameHelper
+{
+
+	public static function normalize(string $name): string
+	{
+		if (!str_contains($name, '\\')) {
+			return $name;
+		}
+
+		$nameParts = array_filter(explode('\\', $name), static fn ($part) => $part !== '');
+		return strtolower(implode('\\', array_slice($nameParts, 0, -1))) . '\\' . end($nameParts);
+	}
+
+}
diff --git a/src/Reflection/ConstantReflection.php b/src/Reflection/ConstantReflection.php
new file mode 100644
index 00000000..3390b840
--- /dev/null
+++ b/src/Reflection/ConstantReflection.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/** @api */
+interface ConstantReflection
+{
+
+	public function getName(): string;
+
+	public function getValueType(): Type;
+
+	public function isDeprecated(): TrinaryLogic;
+
+	public function getDeprecatedDescription(): ?string;
+
+	public function isInternal(): TrinaryLogic;
+
+	public function getFileName(): ?string;
+
+}
diff --git a/src/Reflection/ConstructorsHelper.php b/src/Reflection/ConstructorsHelper.php
new file mode 100644
index 00000000..7c466851
--- /dev/null
+++ b/src/Reflection/ConstructorsHelper.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use ReflectionException;
+use function array_key_exists;
+use function explode;
+
+final class ConstructorsHelper
+{
+
+	/** @var array<string, list<string>> */
+	private array $additionalConstructorsCache = [];
+
+	/**
+	 * @param list<string> $additionalConstructors
+	 */
+	public function __construct(
+		private Container $container,
+		private array $additionalConstructors,
+	)
+	{
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getConstructors(ClassReflection $classReflection): array
+	{
+		if (array_key_exists($classReflection->getName(), $this->additionalConstructorsCache)) {
+			return $this->additionalConstructorsCache[$classReflection->getName()];
+		}
+		$constructors = [];
+		if ($classReflection->hasConstructor()) {
+			$constructors[] = $classReflection->getConstructor()->getName();
+		}
+
+		/** @var AdditionalConstructorsExtension[] $extensions */
+		$extensions = $this->container->getServicesByTag(AdditionalConstructorsExtension::EXTENSION_TAG);
+		foreach ($extensions as $extension) {
+			$extensionConstructors = $extension->getAdditionalConstructors($classReflection);
+			foreach ($extensionConstructors as $extensionConstructor) {
+				$constructors[] = $extensionConstructor;
+			}
+		}
+
+		$nativeReflection = $classReflection->getNativeReflection();
+		foreach ($this->additionalConstructors as $additionalConstructor) {
+			[$className, $methodName] = explode('::', $additionalConstructor);
+			if (!$nativeReflection->hasMethod($methodName)) {
+				continue;
+			}
+			$nativeMethod = $nativeReflection->getMethod($methodName);
+			if ($nativeMethod->getDeclaringClass()->getName() !== $nativeReflection->getName()) {
+				continue;
+			}
+
+			try {
+				$prototype = $nativeMethod->getPrototype();
+			} catch (ReflectionException) {
+				$prototype = $nativeMethod;
+			}
+
+			if ($prototype->getDeclaringClass()->getName() !== $className) {
+				continue;
+			}
+
+			$constructors[] = $methodName;
+		}
+
+		$this->additionalConstructorsCache[$classReflection->getName()] = $constructors;
+
+		return $constructors;
+	}
+
+}
diff --git a/src/Reflection/Dummy/ChangedTypeMethodReflection.php b/src/Reflection/Dummy/ChangedTypeMethodReflection.php
new file mode 100644
index 00000000..d749dc2d
--- /dev/null
+++ b/src/Reflection/Dummy/ChangedTypeMethodReflection.php
@@ -0,0 +1,164 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use function count;
+use function is_bool;
+
+final class ChangedTypeMethodReflection implements ExtendedMethodReflection
+{
+
+	/**
+	 * @param list<ExtendedParametersAcceptor> $variants
+	 * @param list<ExtendedParametersAcceptor>|null $namedArgumentsVariants
+	 */
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private ExtendedMethodReflection $reflection,
+		private array $variants,
+		private ?array $namedArgumentsVariants,
+		private ?Type $selfOutType,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->reflection->getDocComment();
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this->reflection->getPrototype();
+	}
+
+	public function getVariants(): array
+	{
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		$variants = $this->getVariants();
+		if (count($variants) !== 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $variants[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return $this->namedArgumentsVariants;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->reflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->reflection->getDeprecatedDescription();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->reflection->isFinal();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return $this->reflection->isFinalByKeyword();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->reflection->getThrowType();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return $this->reflection->hasSideEffects();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->reflection->getAsserts();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->reflection->acceptsNamedArguments();
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return $this->selfOutType;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return $this->reflection->returnsByReference();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		$abstract = $this->reflection->isAbstract();
+		if (is_bool($abstract)) {
+			return TrinaryLogic::createFromBoolean($abstract);
+		}
+
+		return $abstract;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->reflection->isPure();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->reflection->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Dummy/ChangedTypePropertyReflection.php b/src/Reflection/Dummy/ChangedTypePropertyReflection.php
new file mode 100644
index 00000000..ac5e694d
--- /dev/null
+++ b/src/Reflection/Dummy/ChangedTypePropertyReflection.php
@@ -0,0 +1,150 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\WrapperPropertyReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+final class ChangedTypePropertyReflection implements WrapperPropertyReflection
+{
+
+	public function __construct(private ClassReflection $declaringClass, private ExtendedPropertyReflection $reflection, private Type $readableType, private Type $writableType, private Type $phpDocType, private Type $nativeType)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->reflection->getDocComment();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->reflection->hasPhpDocType();
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->phpDocType;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->reflection->hasNativeType();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->nativeType;
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->readableType;
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->writableType;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->reflection->canChangeTypeAfterAssignment();
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->reflection->isReadable();
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->reflection->isWritable();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->reflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->reflection->getDeprecatedDescription();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function getOriginalReflection(): ExtendedPropertyReflection
+	{
+		return $this->reflection;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return $this->reflection->isAbstract();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->reflection->isFinal();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return $this->reflection->isVirtual();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return $this->reflection->hasHook($hookType);
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		return $this->reflection->getHook($hookType);
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->reflection->isProtectedSet();
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->reflection->isPrivateSet();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->reflection->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Dummy/DummyClassConstantReflection.php b/src/Reflection/Dummy/DummyClassConstantReflection.php
new file mode 100644
index 00000000..bbb505cb
--- /dev/null
+++ b/src/Reflection/Dummy/DummyClassConstantReflection.php
@@ -0,0 +1,115 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use stdClass;
+
+final class DummyClassConstantReflection implements ClassConstantReflection
+{
+
+	public function __construct(private string $name)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		return $reflectionProvider->getClass(stdClass::class);
+	}
+
+	public function isFinal(): bool
+	{
+		return false;
+	}
+
+	public function getFileName(): ?string
+	{
+		return null;
+	}
+
+	public function isStatic(): bool
+	{
+		return true;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getValueExpr(): Expr
+	{
+		return new TypeExpr(new MixedType());
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): ?Type
+	{
+		return null;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): ?Type
+	{
+		return null;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Dummy/DummyConstructorReflection.php b/src/Reflection/Dummy/DummyConstructorReflection.php
new file mode 100644
index 00000000..99214a12
--- /dev/null
+++ b/src/Reflection/Dummy/DummyConstructorReflection.php
@@ -0,0 +1,156 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VoidType;
+
+final class DummyConstructorReflection implements ExtendedMethodReflection
+{
+
+	public function __construct(private ClassReflection $declaringClass)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getName(): string
+	{
+		return '__construct';
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function getVariants(): array
+	{
+		return [
+			new ExtendedFunctionVariant(
+				TemplateTypeMap::createEmpty(),
+				null,
+				[],
+				false,
+				new VoidType(),
+				new MixedType(),
+				new MixedType(),
+				null,
+			),
+		];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return null;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->declaringClass->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Dummy/DummyMethodReflection.php b/src/Reflection/Dummy/DummyMethodReflection.php
new file mode 100644
index 00000000..93b141bd
--- /dev/null
+++ b/src/Reflection/Dummy/DummyMethodReflection.php
@@ -0,0 +1,148 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use stdClass;
+
+final class DummyMethodReflection implements ExtendedMethodReflection
+{
+
+	public function __construct(private string $name)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		return $reflectionProvider->getClass(stdClass::class);
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function getVariants(): array
+	{
+		return [
+			new TrivialParametersAcceptor(),
+		];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return null;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Dummy/DummyPropertyReflection.php b/src/Reflection/Dummy/DummyPropertyReflection.php
new file mode 100644
index 00000000..41c02924
--- /dev/null
+++ b/src/Reflection/Dummy/DummyPropertyReflection.php
@@ -0,0 +1,146 @@
+<?php 
+
+namespace PHPStan\Reflection\Dummy;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use stdClass;
+
+final class DummyPropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		return $reflectionProvider->getClass(stdClass::class);
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getWritableType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return true;
+	}
+
+	public function isReadable(): bool
+	{
+		return true;
+	}
+
+	public function isWritable(): bool
+	{
+		return true;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/EnumCaseReflection.php b/src/Reflection/EnumCaseReflection.php
new file mode 100644
index 00000000..deea18a2
--- /dev/null
+++ b/src/Reflection/EnumCaseReflection.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnumBackedCase;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnumUnitCase;
+use PHPStan\Internal\DeprecatedAttributeHelper;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class EnumCaseReflection
+{
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private ClassReflection $declaringEnum,
+		private ReflectionEnumUnitCase|ReflectionEnumBackedCase $reflection,
+		private ?Type $backingValueType,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getDeclaringEnum(): ClassReflection
+	{
+		return $this->declaringEnum;
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getBackingValueType(): ?Type
+	{
+		return $this->backingValueType;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->reflection->isDeprecated()) {
+			$attributes = $this->reflection->getBetterReflection()->getAttributes();
+			return DeprecatedAttributeHelper::getDeprecatedDescription($attributes);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/ExtendedCallableFunctionVariant.php b/src/Reflection/ExtendedCallableFunctionVariant.php
new file mode 100644
index 00000000..02d6eb76
--- /dev/null
+++ b/src/Reflection/ExtendedCallableFunctionVariant.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+final class ExtendedCallableFunctionVariant extends ExtendedFunctionVariant implements CallableParametersAcceptor
+{
+
+	/**
+	 * @param list<ExtendedParameterReflection> $parameters
+	 * @param SimpleThrowPoint[] $throwPoints
+	 * @param SimpleImpurePoint[] $impurePoints
+	 * @param InvalidateExprNode[] $invalidateExpressions
+	 * @param string[] $usedVariables
+	 */
+	public function __construct(
+		TemplateTypeMap $templateTypeMap,
+		?TemplateTypeMap $resolvedTemplateTypeMap,
+		array $parameters,
+		bool $isVariadic,
+		Type $returnType,
+		Type $phpDocReturnType,
+		Type $nativeReturnType,
+		?TemplateTypeVarianceMap $callSiteVarianceMap,
+		private array $throwPoints,
+		private TrinaryLogic $isPure,
+		private array $impurePoints,
+		private array $invalidateExpressions,
+		private array $usedVariables,
+		private TrinaryLogic $acceptsNamedArguments,
+	)
+	{
+		parent::__construct(
+			$templateTypeMap,
+			$resolvedTemplateTypeMap,
+			$parameters,
+			$isVariadic,
+			$returnType,
+			$phpDocReturnType,
+			$nativeReturnType,
+			$callSiteVarianceMap,
+		);
+	}
+
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->isPure;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return $this->invalidateExpressions;
+	}
+
+	public function getUsedVariables(): array
+	{
+		return $this->usedVariables;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->acceptsNamedArguments;
+	}
+
+}
diff --git a/src/Reflection/ExtendedFunctionVariant.php b/src/Reflection/ExtendedFunctionVariant.php
new file mode 100644
index 00000000..3424b544
--- /dev/null
+++ b/src/Reflection/ExtendedFunctionVariant.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+class ExtendedFunctionVariant extends FunctionVariant implements ExtendedParametersAcceptor
+{
+
+	/**
+	 * @param list<ExtendedParameterReflection> $parameters
+	 * @api
+	 */
+	public function __construct(
+		TemplateTypeMap $templateTypeMap,
+		?TemplateTypeMap $resolvedTemplateTypeMap,
+		array $parameters,
+		bool $isVariadic,
+		Type $returnType,
+		private Type $phpDocReturnType,
+		private Type $nativeReturnType,
+		?TemplateTypeVarianceMap $callSiteVarianceMap = null,
+	)
+	{
+		parent::__construct(
+			$templateTypeMap,
+			$resolvedTemplateTypeMap,
+			$parameters,
+			$isVariadic,
+			$returnType,
+			$callSiteVarianceMap,
+		);
+	}
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		/** @var list<ExtendedParameterReflection> $parameters */
+		$parameters = parent::getParameters();
+
+		return $parameters;
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		return $this->phpDocReturnType;
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->nativeReturnType;
+	}
+
+}
diff --git a/src/Reflection/ExtendedMethodReflection.php b/src/Reflection/ExtendedMethodReflection.php
new file mode 100644
index 00000000..d34b6530
--- /dev/null
+++ b/src/Reflection/ExtendedMethodReflection.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/**
+ * The purpose of this interface is to be able to
+ * answer more questions about methods
+ * without breaking backward compatibility
+ * with existing MethodsClassReflectionExtension.
+ *
+ * Developers are meant to only implement MethodReflection
+ * and its methods in their code.
+ *
+ * New methods on ExtendedMethodReflection will be added
+ * in minor versions.
+ *
+ * @api
+ */
+interface ExtendedMethodReflection extends MethodReflection
+{
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>
+	 */
+	public function getVariants(): array;
+
+	/**
+	 * @internal
+	 */
+	public function getOnlyVariant(): ExtendedParametersAcceptor;
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>|null
+	 */
+	public function getNamedArgumentsVariants(): ?array;
+
+	public function acceptsNamedArguments(): TrinaryLogic;
+
+	public function getAsserts(): Assertions;
+
+	public function getSelfOutType(): ?Type;
+
+	public function returnsByReference(): TrinaryLogic;
+
+	public function isFinalByKeyword(): TrinaryLogic;
+
+	public function isAbstract(): TrinaryLogic|bool;
+
+	/**
+	 * This indicates whether the method has phpstan-pure
+	 * or phpstan-impure annotation above it.
+	 *
+	 * In most cases asking hasSideEffects() is much more practical
+	 * as it also accounts for void return type (method being always impure).
+	 */
+	public function isPure(): TrinaryLogic;
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array;
+
+}
diff --git a/src/Reflection/ExtendedParameterReflection.php b/src/Reflection/ExtendedParameterReflection.php
new file mode 100644
index 00000000..585b229f
--- /dev/null
+++ b/src/Reflection/ExtendedParameterReflection.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/** @api */
+interface ExtendedParameterReflection extends ParameterReflection
+{
+
+	public function getPhpDocType(): Type;
+
+	public function hasNativeType(): bool;
+
+	public function getNativeType(): Type;
+
+	public function getOutType(): ?Type;
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic;
+
+	public function getClosureThisType(): ?Type;
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array;
+
+}
diff --git a/src/Reflection/ExtendedParametersAcceptor.php b/src/Reflection/ExtendedParametersAcceptor.php
new file mode 100644
index 00000000..e1fa7d30
--- /dev/null
+++ b/src/Reflection/ExtendedParametersAcceptor.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+/** @api */
+interface ExtendedParametersAcceptor extends ParametersAcceptor
+{
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	public function getParameters(): array;
+
+	public function getPhpDocReturnType(): Type;
+
+	public function getNativeReturnType(): Type;
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap;
+
+}
diff --git a/src/Reflection/ExtendedPropertyReflection.php b/src/Reflection/ExtendedPropertyReflection.php
new file mode 100644
index 00000000..d5029b20
--- /dev/null
+++ b/src/Reflection/ExtendedPropertyReflection.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/**
+ * The purpose of this interface is to be able to
+ * answer more questions about properties
+ * without breaking backward compatibility
+ * with existing PropertiesClassReflectionExtension.
+ *
+ * Developers are meant to only implement PropertyReflection
+ * and its methods in their code.
+ *
+ * New methods on ExtendedPropertyReflection will be added
+ * in minor versions.
+ *
+ * @api
+ */
+interface ExtendedPropertyReflection extends PropertyReflection
+{
+
+	public const HOOK_GET = 'get';
+
+	public const HOOK_SET = 'set';
+
+	public function hasPhpDocType(): bool;
+
+	public function getPhpDocType(): Type;
+
+	public function hasNativeType(): bool;
+
+	public function getNativeType(): Type;
+
+	public function isAbstract(): TrinaryLogic;
+
+	public function isFinal(): TrinaryLogic;
+
+	public function isVirtual(): TrinaryLogic;
+
+	/**
+	 * @param self::HOOK_* $hookType
+	 */
+	public function hasHook(string $hookType): bool;
+
+	/**
+	 * @param self::HOOK_* $hookType
+	 */
+	public function getHook(string $hookType): ExtendedMethodReflection;
+
+	public function isProtectedSet(): bool;
+
+	public function isPrivateSet(): bool;
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array;
+
+}
diff --git a/src/Reflection/FunctionReflection.php b/src/Reflection/FunctionReflection.php
new file mode 100644
index 00000000..777e626e
--- /dev/null
+++ b/src/Reflection/FunctionReflection.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/** @api */
+interface FunctionReflection
+{
+
+	public function getName(): string;
+
+	public function getFileName(): ?string;
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>
+	 */
+	public function getVariants(): array;
+
+	/**
+	 * @internal
+	 */
+	public function getOnlyVariant(): ExtendedParametersAcceptor;
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>|null
+	 */
+	public function getNamedArgumentsVariants(): ?array;
+
+	public function acceptsNamedArguments(): TrinaryLogic;
+
+	public function isDeprecated(): TrinaryLogic;
+
+	public function getDeprecatedDescription(): ?string;
+
+	public function isInternal(): TrinaryLogic;
+
+	public function getThrowType(): ?Type;
+
+	public function hasSideEffects(): TrinaryLogic;
+
+	public function isBuiltin(): bool;
+
+	public function getAsserts(): Assertions;
+
+	public function getDocComment(): ?string;
+
+	public function returnsByReference(): TrinaryLogic;
+
+	/**
+	 * This indicates whether the function has phpstan-pure
+	 * or phpstan-impure annotation above it.
+	 *
+	 * In most cases asking hasSideEffects() is much more practical
+	 * as it also accounts for void return type (method being always impure).
+	 */
+	public function isPure(): TrinaryLogic;
+
+	/**
+	 * @return list<AttributeReflection>
+	 */
+	public function getAttributes(): array;
+
+}
diff --git a/src/Reflection/FunctionReflectionFactory.php b/src/Reflection/FunctionReflectionFactory.php
new file mode 100644
index 00000000..05d4c6d9
--- /dev/null
+++ b/src/Reflection/FunctionReflectionFactory.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\Reflection\Php\PhpFunctionReflection;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Type;
+
+interface FunctionReflectionFactory
+{
+
+	/**
+	 * @param array<string, Type> $phpDocParameterTypes
+	 * @param array<string, Type> $phpDocParameterOutTypes
+	 * @param array<string, bool> $phpDocParameterImmediatelyInvokedCallable
+	 * @param array<string, Type> $phpDocParameterClosureThisTypes
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function create(
+		ReflectionFunction $reflection,
+		TemplateTypeMap $templateTypeMap,
+		array $phpDocParameterTypes,
+		?Type $phpDocReturnType,
+		?Type $phpDocThrowType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		bool $isInternal,
+		?string $filename,
+		?bool $isPure,
+		Assertions $asserts,
+		bool $acceptsNamedArguments,
+		?string $phpDocComment,
+		array $phpDocParameterOutTypes,
+		array $phpDocParameterImmediatelyInvokedCallable,
+		array $phpDocParameterClosureThisTypes,
+		array $attributes,
+	): PhpFunctionReflection;
+
+}
diff --git a/src/Reflection/FunctionVariant.php b/src/Reflection/FunctionVariant.php
new file mode 100644
index 00000000..d65e0857
--- /dev/null
+++ b/src/Reflection/FunctionVariant.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+class FunctionVariant implements ParametersAcceptor
+{
+
+	private TemplateTypeVarianceMap $callSiteVarianceMap;
+
+	/**
+	 * @api
+	 * @param list<ParameterReflection> $parameters
+	 */
+	public function __construct(
+		private TemplateTypeMap $templateTypeMap,
+		private ?TemplateTypeMap $resolvedTemplateTypeMap,
+		private array $parameters,
+		private bool $isVariadic,
+		private Type $returnType,
+		?TemplateTypeVarianceMap $callSiteVarianceMap = null,
+	)
+	{
+		$this->callSiteVarianceMap = $callSiteVarianceMap ?? TemplateTypeVarianceMap::createEmpty();
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->resolvedTemplateTypeMap ?? TemplateTypeMap::createEmpty();
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->callSiteVarianceMap;
+	}
+
+	/**
+	 * @return list<ParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		return $this->parameters;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->isVariadic;
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->returnType;
+	}
+
+}
diff --git a/src/Reflection/GenericParametersAcceptorResolver.php b/src/Reflection/GenericParametersAcceptorResolver.php
new file mode 100644
index 00000000..be5681ba
--- /dev/null
+++ b/src/Reflection/GenericParametersAcceptorResolver.php
@@ -0,0 +1,138 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function array_map;
+use function array_merge;
+use function count;
+use function is_int;
+
+final class GenericParametersAcceptorResolver
+{
+
+	/**
+	 * @api
+	 * @param array<int|string, Type> $argTypes
+	 */
+	public static function resolve(array $argTypes, ParametersAcceptor $parametersAcceptor): ExtendedParametersAcceptor
+	{
+		$typeMap = TemplateTypeMap::createEmpty();
+		$passedArgs = [];
+
+		$parameters = $parametersAcceptor->getParameters();
+		$namedArgTypes = [];
+		foreach ($argTypes as $i => $argType) {
+			if (is_int($i)) {
+				if (isset($parameters[$i])) {
+					$namedArgTypes[$parameters[$i]->getName()] = $argType;
+					continue;
+				}
+				if (count($parameters) > 0) {
+					$lastParameter = $parameters[count($parameters) - 1];
+					if ($lastParameter->isVariadic()) {
+						$parameterName = $lastParameter->getName();
+						if (array_key_exists($parameterName, $namedArgTypes)) {
+							$namedArgTypes[$parameterName] = TypeCombinator::union($namedArgTypes[$parameterName], $argType);
+							continue;
+						}
+						$namedArgTypes[$parameterName] = $argType;
+					}
+				}
+				continue;
+			}
+
+			$namedArgTypes[$i] = $argType;
+		}
+
+		foreach ($parametersAcceptor->getParameters() as $param) {
+			if (isset($namedArgTypes[$param->getName()])) {
+				$argType = $namedArgTypes[$param->getName()];
+			} elseif ($param->getDefaultValue() !== null) {
+				$argType = $param->getDefaultValue();
+			} else {
+				continue;
+			}
+
+			$paramType = $param->getType();
+			$typeMap = $typeMap->union($paramType->inferTemplateTypes($argType));
+			$passedArgs['$' . $param->getName()] = $argType;
+		}
+
+		$returnType = $parametersAcceptor->getReturnType();
+		if (
+			$returnType instanceof ConditionalTypeForParameter
+			&& !$returnType->isNegated()
+			&& array_key_exists($returnType->getParameterName(), $passedArgs)
+		) {
+			$paramType = $returnType->getTarget();
+			$argType = $passedArgs[$returnType->getParameterName()];
+			$typeMap = $typeMap->union($paramType->inferTemplateTypes($argType));
+		}
+
+		$resolvedTemplateTypeMap = new TemplateTypeMap(array_merge(
+			$parametersAcceptor->getTemplateTypeMap()->map(static fn (string $name, Type $type): Type => new ErrorType())->getTypes(),
+			$typeMap->getTypes(),
+		));
+
+		$originalParametersAcceptor = $parametersAcceptor;
+
+		if (!$parametersAcceptor instanceof ExtendedParametersAcceptor) {
+			$parametersAcceptor = new ExtendedFunctionVariant(
+				$parametersAcceptor->getTemplateTypeMap(),
+				$parametersAcceptor->getResolvedTemplateTypeMap(),
+				array_map(static fn (ParameterReflection $parameter): ExtendedParameterReflection => new ExtendedDummyParameter(
+					$parameter->getName(),
+					$parameter->getType(),
+					$parameter->isOptional(),
+					$parameter->passedByReference(),
+					$parameter->isVariadic(),
+					$parameter->getDefaultValue(),
+					new MixedType(),
+					$parameter->getType(),
+					null,
+					TrinaryLogic::createMaybe(),
+					null,
+					[],
+				), $parametersAcceptor->getParameters()),
+				$parametersAcceptor->isVariadic(),
+				$parametersAcceptor->getReturnType(),
+				$parametersAcceptor->getReturnType(),
+				new MixedType(),
+				TemplateTypeVarianceMap::createEmpty(),
+			);
+		}
+
+		$result = new ResolvedFunctionVariantWithOriginal(
+			$parametersAcceptor,
+			$resolvedTemplateTypeMap,
+			$parametersAcceptor->getCallSiteVarianceMap(),
+			$passedArgs,
+		);
+		if ($originalParametersAcceptor instanceof CallableParametersAcceptor) {
+			return new ResolvedFunctionVariantWithCallable(
+				$result,
+				$originalParametersAcceptor->getThrowPoints(),
+				$originalParametersAcceptor->isPure(),
+				$originalParametersAcceptor->getImpurePoints(),
+				$originalParametersAcceptor->getInvalidateExpressions(),
+				$originalParametersAcceptor->getUsedVariables(),
+				$originalParametersAcceptor->acceptsNamedArguments(),
+			);
+		}
+
+		return $result;
+	}
+
+}
diff --git a/src/Reflection/InaccessibleMethod.php b/src/Reflection/InaccessibleMethod.php
new file mode 100644
index 00000000..23d823ef
--- /dev/null
+++ b/src/Reflection/InaccessibleMethod.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class InaccessibleMethod implements CallableParametersAcceptor
+{
+
+	public function __construct(private ExtendedMethodReflection $methodReflection)
+	{
+	}
+
+	public function getMethod(): ExtendedMethodReflection
+	{
+		return $this->methodReflection;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return TemplateTypeVarianceMap::createEmpty();
+	}
+
+	public function getParameters(): array
+	{
+		return [];
+	}
+
+	public function isVariadic(): bool
+	{
+		return true;
+	}
+
+	public function getReturnType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getThrowPoints(): array
+	{
+		return [];
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getImpurePoints(): array
+	{
+		return [
+			new SimpleImpurePoint(
+				'methodCall',
+				'call to unknown method',
+				false,
+			),
+		];
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return [];
+	}
+
+	public function getUsedVariables(): array
+	{
+		return [];
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->methodReflection->acceptsNamedArguments();
+	}
+
+}
diff --git a/src/Reflection/InitializerExprContext.php b/src/Reflection/InitializerExprContext.php
new file mode 100644
index 00000000..f625465f
--- /dev/null
+++ b/src/Reflection/InitializerExprContext.php
@@ -0,0 +1,251 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PhpParser\Node\PropertyHook;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\BetterReflection\Reflection\ReflectionConstant;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\ShouldNotHappenException;
+use function array_slice;
+use function count;
+use function explode;
+use function implode;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class InitializerExprContext implements NamespaceAnswerer
+{
+
+	/**
+	 * @param non-empty-string|null $namespace
+	 */
+	private function __construct(
+		private ?string $file,
+		private ?string $namespace,
+		private ?string $className,
+		private ?string $traitName,
+		private ?string $function,
+		private ?string $method,
+		private ?string $property,
+	)
+	{
+	}
+
+	public static function fromScope(Scope $scope): self
+	{
+		$function = $scope->getFunction();
+
+		return new self(
+			$scope->getFile(),
+			$scope->getNamespace(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$scope->isInAnonymousFunction() ? '{closure}' : ($function !== null ? $function->getName() : null),
+			$scope->isInAnonymousFunction() ? '{closure}' : ($function instanceof MethodReflection
+				? sprintf('%s::%s', $function->getDeclaringClass()->getName(), $function->getName())
+				: ($function instanceof FunctionReflection ? $function->getName() : null)),
+			$function instanceof PhpMethodFromParserNodeReflection && $function->isPropertyHook() ? $function->getHookedPropertyName() : null,
+		);
+	}
+
+	/**
+	 * @return non-empty-string|null
+	 */
+	private static function parseNamespace(string $name): ?string
+	{
+		$parts = explode('\\', $name);
+		if (count($parts) > 1) {
+			$ns = implode('\\', array_slice($parts, 0, -1));
+			if ($ns === '') {
+				throw new ShouldNotHappenException('Namespace cannot be empty.');
+			}
+			return $ns;
+		}
+
+		return null;
+	}
+
+	public static function fromClassReflection(ClassReflection $classReflection): self
+	{
+		return self::fromClass($classReflection->getName(), $classReflection->getFileName());
+	}
+
+	public static function fromClass(string $className, ?string $fileName): self
+	{
+		return new self(
+			$fileName,
+			self::parseNamespace($className),
+			$className,
+			null,
+			null,
+			null,
+			null,
+		);
+	}
+
+	public static function fromFunction(string $functionName, ?string $fileName): self
+	{
+		return new self(
+			$fileName,
+			self::parseNamespace($functionName),
+			null,
+			null,
+			$functionName,
+			$functionName,
+			null,
+		);
+	}
+
+	public static function fromClassMethod(string $className, ?string $traitName, string $methodName, ?string $fileName): self
+	{
+		return new self(
+			$fileName,
+			self::parseNamespace($className),
+			$className,
+			$traitName,
+			$methodName,
+			sprintf('%s::%s', $className, $methodName),
+			null,
+		);
+	}
+
+	public static function fromReflectionParameter(ReflectionParameter $parameter): self
+	{
+		$declaringFunction = $parameter->getDeclaringFunction();
+		if ($declaringFunction instanceof ReflectionFunction) {
+			$file = $declaringFunction->getFileName();
+			return new self(
+				$file === false ? null : $file,
+				self::parseNamespace($declaringFunction->getName()),
+				null,
+				null,
+				$declaringFunction->getName(),
+				$declaringFunction->getName(),
+				null, // Property hook parameter cannot have a default value. fromReflectionParameter is only used for that
+			);
+		}
+
+		$file = $declaringFunction->getFileName();
+
+		$betterReflection = $declaringFunction->getBetterReflection();
+
+		return new self(
+			$file === false ? null : $file,
+			self::parseNamespace($betterReflection->getDeclaringClass()->getName()),
+			$declaringFunction->getDeclaringClass()->getName(),
+			$betterReflection->getDeclaringClass()->isTrait() ? $betterReflection->getDeclaringClass()->getName() : null,
+			$declaringFunction->getName(),
+			sprintf('%s::%s', $declaringFunction->getDeclaringClass()->getName(), $declaringFunction->getName()),
+			null, // Property hook parameter cannot have a default value. fromReflectionParameter is only used for that
+		);
+	}
+
+	public static function fromStubParameter(
+		?string $className,
+		string $stubFile,
+		ClassMethod|Function_|PropertyHook $function,
+	): self
+	{
+		$namespace = null;
+		if ($className !== null) {
+			$namespace = self::parseNamespace($className);
+		} else {
+			if ($function instanceof Function_ && $function->namespacedName !== null) {
+				$namespace = self::parseNamespace($function->namespacedName->toString());
+			}
+		}
+
+		$functionName = null;
+		$propertyName = null;
+		if ($function instanceof Function_ && $function->namespacedName !== null) {
+			$functionName = $function->namespacedName->toString();
+		} elseif ($function instanceof ClassMethod) {
+			$functionName = $function->name->toString();
+		} elseif ($function instanceof PropertyHook) {
+			$propertyName = $function->getAttribute('propertyName');
+			$functionName = sprintf('$%s::%s', $propertyName, $function->name->toString());
+		}
+
+		$methodName = null;
+		if ($function instanceof ClassMethod && $className !== null) {
+			$methodName = sprintf('%s::%s', $className, $function->name->toString());
+		} elseif ($function instanceof PropertyHook) {
+			$propertyName = $function->getAttribute('propertyName');
+			$methodName = sprintf('%s::$%s::%s', $className, $propertyName, $function->name->toString());
+		} elseif ($function instanceof Function_ && $function->namespacedName !== null) {
+			$methodName = $function->namespacedName->toString();
+		}
+
+		return new self(
+			$stubFile,
+			$namespace,
+			$className,
+			null,
+			$functionName,
+			$methodName,
+			$propertyName,
+		);
+	}
+
+	public static function fromGlobalConstant(ReflectionConstant $constant): self
+	{
+		return new self(
+			$constant->getFileName(),
+			$constant->getNamespaceName(),
+			null,
+			null,
+			null,
+			null,
+			null,
+		);
+	}
+
+	public static function createEmpty(): self
+	{
+		return new self(null, null, null, null, null, null, null);
+	}
+
+	public function getFile(): ?string
+	{
+		return $this->file;
+	}
+
+	public function getClassName(): ?string
+	{
+		return $this->className;
+	}
+
+	public function getNamespace(): ?string
+	{
+		return $this->namespace;
+	}
+
+	public function getTraitName(): ?string
+	{
+		return $this->traitName;
+	}
+
+	public function getFunction(): ?string
+	{
+		return $this->function;
+	}
+
+	public function getMethod(): ?string
+	{
+		return $this->method;
+	}
+
+	public function getProperty(): ?string
+	{
+		return $this->property;
+	}
+
+}
diff --git a/src/Reflection/InitializerExprTypeResolver.php b/src/Reflection/InitializerExprTypeResolver.php
new file mode 100644
index 00000000..23b511f7
--- /dev/null
+++ b/src/Reflection/InitializerExprTypeResolver.php
@@ -0,0 +1,2180 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Nette\Utils\Strings;
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\BinaryOp;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+use PhpParser\Node\Scalar\Float_;
+use PhpParser\Node\Scalar\Int_;
+use PhpParser\Node\Scalar\MagicConst;
+use PhpParser\Node\Scalar\MagicConst\Dir;
+use PhpParser\Node\Scalar\MagicConst\File;
+use PhpParser\Node\Scalar\MagicConst\Line;
+use PhpParser\Node\Scalar\String_;
+use PHPStan\Analyser\ConstantResolver;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\DependencyInjection\Type\OperatorTypeSpecifyingExtensionRegistryProvider;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Constant\OversizedArrayBuilder;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\ConstantTypeHelper;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypehintHelper;
+use PHPStan\Type\TypeResult;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\TypeWithClassName;
+use PHPStan\Type\UnionType;
+use function array_key_exists;
+use function array_keys;
+use function array_merge;
+use function assert;
+use function ceil;
+use function count;
+use function dirname;
+use function floor;
+use function in_array;
+use function intval;
+use function is_finite;
+use function is_float;
+use function is_int;
+use function is_numeric;
+use function max;
+use function min;
+use function sprintf;
+use function strtolower;
+use const INF;
+
+final class InitializerExprTypeResolver
+{
+
+	public const CALCULATE_SCALARS_LIMIT = 128;
+
+	/** @var array<string, true> */
+	private array $currentlyResolvingClassConstant = [];
+
+	public function __construct(
+		private ConstantResolver $constantResolver,
+		private ReflectionProviderProvider $reflectionProviderProvider,
+		private PhpVersion $phpVersion,
+		private OperatorTypeSpecifyingExtensionRegistryProvider $operatorTypeSpecifyingExtensionRegistryProvider,
+		private OversizedArrayBuilder $oversizedArrayBuilder,
+		private bool $usePathConstantsAsConstantString,
+	)
+	{
+	}
+
+	/** @api */
+	public function getType(Expr $expr, InitializerExprContext $context): Type
+	{
+		if ($expr instanceof TypeExpr) {
+			return $expr->getExprType();
+		}
+		if ($expr instanceof Int_) {
+			return new ConstantIntegerType($expr->value);
+		}
+		if ($expr instanceof Float_) {
+			return new ConstantFloatType($expr->value);
+		}
+		if ($expr instanceof String_) {
+			return new ConstantStringType($expr->value);
+		}
+		if ($expr instanceof ConstFetch) {
+			$constName = (string) $expr->name;
+			$loweredConstName = strtolower($constName);
+			if ($loweredConstName === 'true') {
+				return new ConstantBooleanType(true);
+			} elseif ($loweredConstName === 'false') {
+				return new ConstantBooleanType(false);
+			} elseif ($loweredConstName === 'null') {
+				return new NullType();
+			}
+
+			$constant = $this->constantResolver->resolveConstant($expr->name, $context);
+			if ($constant !== null) {
+				return $constant;
+			}
+
+			return new ErrorType();
+		}
+		if ($expr instanceof File) {
+			$file = $context->getFile();
+			if ($file === null) {
+				return new StringType();
+			}
+			$stringType = new ConstantStringType($file);
+			return $this->usePathConstantsAsConstantString ? $stringType : $stringType->generalize(GeneralizePrecision::moreSpecific());
+		}
+		if ($expr instanceof Dir) {
+			$file = $context->getFile();
+			if ($file === null) {
+				return new StringType();
+			}
+			$stringType = new ConstantStringType(dirname($file));
+			return $this->usePathConstantsAsConstantString ? $stringType : $stringType->generalize(GeneralizePrecision::moreSpecific());
+		}
+		if ($expr instanceof Line) {
+			return new ConstantIntegerType($expr->getStartLine());
+		}
+		if ($expr instanceof Expr\New_) {
+			if ($expr->class instanceof Name) {
+				return new ObjectType((string) $expr->class);
+			}
+
+			return new ObjectWithoutClassType();
+		}
+		if ($expr instanceof Expr\Array_) {
+			return $this->getArrayType($expr, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+		if ($expr instanceof Expr\ArrayDimFetch && $expr->dim !== null) {
+			$var = $this->getType($expr->var, $context);
+			$dim = $this->getType($expr->dim, $context);
+			return $var->getOffsetValueType($dim);
+		}
+		if ($expr instanceof ClassConstFetch && $expr->name instanceof Identifier) {
+			return $this->getClassConstFetchType($expr->class, $expr->name->toString(), $context->getClassName(), fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+		if ($expr instanceof Expr\UnaryPlus) {
+			return $this->getType($expr->expr, $context)->toNumber();
+		}
+		if ($expr instanceof Expr\UnaryMinus) {
+			return $this->getUnaryMinusType($expr->expr, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+		if ($expr instanceof Expr\BinaryOp\Coalesce) {
+			$leftType = $this->getType($expr->left, $context);
+			$rightType = $this->getType($expr->right, $context);
+
+			return TypeCombinator::union(TypeCombinator::removeNull($leftType), $rightType);
+		}
+
+		if ($expr instanceof Expr\Ternary) {
+			$condType = $this->getType($expr->cond, $context);
+			$elseType = $this->getType($expr->else, $context);
+			if ($expr->if === null) {
+				return TypeCombinator::union(
+					TypeCombinator::removeFalsey($condType),
+					$elseType,
+				);
+			}
+
+			$ifType = $this->getType($expr->if, $context);
+
+			return TypeCombinator::union(
+				TypeCombinator::removeFalsey($ifType),
+				$elseType,
+			);
+		}
+
+		if ($expr instanceof Expr\FuncCall && $expr->name instanceof Name && $expr->name->toLowerString() === 'constant') {
+			$firstArg = $expr->args[0] ?? null;
+			if ($firstArg instanceof Arg && $firstArg->value instanceof String_) {
+				$constant = $this->constantResolver->resolvePredefinedConstant($firstArg->value->value);
+				if ($constant !== null) {
+					return $constant;
+				}
+			}
+		}
+
+		if ($expr instanceof Expr\BooleanNot) {
+			$exprBooleanType = $this->getType($expr->expr, $context)->toBoolean();
+
+			if ($exprBooleanType instanceof ConstantBooleanType) {
+				return new ConstantBooleanType(!$exprBooleanType->getValue());
+			}
+
+			return new BooleanType();
+		}
+
+		if ($expr instanceof Expr\BitwiseNot) {
+			return $this->getBitwiseNotType($expr->expr, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Concat) {
+			return $this->getConcatType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\BitwiseAnd) {
+			return $this->getBitwiseAndType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\BitwiseOr) {
+			return $this->getBitwiseOrType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\BitwiseXor) {
+			return $this->getBitwiseXorType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Spaceship) {
+			return $this->getSpaceshipType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if (
+			$expr instanceof Expr\BinaryOp\BooleanAnd
+			|| $expr instanceof Expr\BinaryOp\LogicalAnd
+			|| $expr instanceof Expr\BinaryOp\BooleanOr
+			|| $expr instanceof Expr\BinaryOp\LogicalOr
+		) {
+			return new BooleanType();
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Div) {
+			return $this->getDivType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Mod) {
+			return $this->getModType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Plus) {
+			return $this->getPlusType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Minus) {
+			return $this->getMinusType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Mul) {
+			return $this->getMulType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Pow) {
+			return $this->getPowType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\ShiftLeft) {
+			return $this->getShiftLeftType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof Expr\BinaryOp\ShiftRight) {
+			return $this->getShiftRightType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
+		}
+
+		if ($expr instanceof BinaryOp\Identical) {
+			return $this->resolveIdenticalType(
+				$this->getType($expr->left, $context),
+				$this->getType($expr->right, $context),
+			)->type;
+		}
+
+		if ($expr instanceof BinaryOp\NotIdentical) {
+			return $this->getType(new Expr\BooleanNot(new BinaryOp\Identical($expr->left, $expr->right)), $context);
+		}
+
+		if ($expr instanceof BinaryOp\Equal) {
+			return $this->resolveEqualType(
+				$this->getType($expr->left, $context),
+				$this->getType($expr->right, $context),
+			)->type;
+		}
+
+		if ($expr instanceof BinaryOp\NotEqual) {
+			return $this->getType(new Expr\BooleanNot(new BinaryOp\Equal($expr->left, $expr->right)), $context);
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Smaller) {
+			return $this->getType($expr->left, $context)->isSmallerThan($this->getType($expr->right, $context), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($expr instanceof Expr\BinaryOp\SmallerOrEqual) {
+			return $this->getType($expr->left, $context)->isSmallerThanOrEqual($this->getType($expr->right, $context), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($expr instanceof Expr\BinaryOp\Greater) {
+			return $this->getType($expr->right, $context)->isSmallerThan($this->getType($expr->left, $context), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($expr instanceof Expr\BinaryOp\GreaterOrEqual) {
+			return $this->getType($expr->right, $context)->isSmallerThanOrEqual($this->getType($expr->left, $context), $this->phpVersion)->toBooleanType();
+		}
+
+		if ($expr instanceof Expr\BinaryOp\LogicalXor) {
+			$leftBooleanType = $this->getType($expr->left, $context)->toBoolean();
+			$rightBooleanType = $this->getType($expr->right, $context)->toBoolean();
+
+			if (
+				$leftBooleanType instanceof ConstantBooleanType
+				&& $rightBooleanType instanceof ConstantBooleanType
+			) {
+				return new ConstantBooleanType(
+					$leftBooleanType->getValue() xor $rightBooleanType->getValue(),
+				);
+			}
+
+			return new BooleanType();
+		}
+
+		if ($expr instanceof MagicConst\Class_) {
+			if ($context->getTraitName() !== null) {
+				return TypeCombinator::intersect(
+					new ClassStringType(),
+					new AccessoryLiteralStringType(),
+				);
+			}
+
+			if ($context->getClassName() === null) {
+				return new ConstantStringType('');
+			}
+
+			return new ConstantStringType($context->getClassName(), true);
+		}
+
+		if ($expr instanceof MagicConst\Namespace_) {
+			if ($context->getTraitName() !== null) {
+				return TypeCombinator::intersect(
+					new StringType(),
+					new AccessoryLiteralStringType(),
+				);
+			}
+
+			return new ConstantStringType($context->getNamespace() ?? '');
+		}
+
+		if ($expr instanceof MagicConst\Method) {
+			return new ConstantStringType($context->getMethod() ?? '');
+		}
+
+		if ($expr instanceof MagicConst\Function_) {
+			return new ConstantStringType($context->getFunction() ?? '');
+		}
+
+		if ($expr instanceof MagicConst\Trait_) {
+			if ($context->getTraitName() === null) {
+				return new ConstantStringType('');
+			}
+
+			return new ConstantStringType($context->getTraitName(), true);
+		}
+
+		if ($expr instanceof MagicConst\Property) {
+			$contextProperty = $context->getProperty();
+			if ($contextProperty === null) {
+				return new ConstantStringType('');
+			}
+
+			return new ConstantStringType($contextProperty);
+		}
+
+		if ($expr instanceof PropertyFetch && $expr->name instanceof Identifier) {
+			$fetchedOnType = $this->getType($expr->var, $context);
+			if (!$fetchedOnType->hasProperty($expr->name->name)->yes()) {
+				return new ErrorType();
+			}
+
+			return $fetchedOnType->getProperty($expr->name->name, new OutOfClassScope())->getReadableType();
+		}
+
+		return new MixedType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getConcatType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		return $this->resolveConcatType($leftType, $rightType);
+	}
+
+	public function resolveConcatType(Type $left, Type $right): Type
+	{
+		$leftStringType = $left->toString();
+		$rightStringType = $right->toString();
+		if (TypeCombinator::union(
+			$leftStringType,
+			$rightStringType,
+		) instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		if ($leftStringType instanceof ConstantStringType && $leftStringType->getValue() === '') {
+			return $rightStringType;
+		}
+
+		if ($rightStringType instanceof ConstantStringType && $rightStringType->getValue() === '') {
+			return $leftStringType;
+		}
+
+		if ($leftStringType instanceof ConstantStringType && $rightStringType instanceof ConstantStringType) {
+			return $leftStringType->append($rightStringType);
+		}
+
+		$leftConstantStrings = $leftStringType->getConstantStrings();
+		$rightConstantStrings = $rightStringType->getConstantStrings();
+		$combinedConstantStringsCount = count($leftConstantStrings) * count($rightConstantStrings);
+
+		// we limit the number of union-types for performance reasons
+		if ($combinedConstantStringsCount > 0 && $combinedConstantStringsCount <= 16) {
+			$strings = [];
+
+			foreach ($leftConstantStrings as $leftConstantString) {
+				if ($leftConstantString->getValue() === '') {
+					$strings = array_merge($strings, $rightConstantStrings);
+
+					continue;
+				}
+
+				foreach ($rightConstantStrings as $rightConstantString) {
+					if ($rightConstantString->getValue() === '') {
+						$strings[] = $leftConstantString;
+
+						continue;
+					}
+
+					$strings[] = $leftConstantString->append($rightConstantString);
+				}
+			}
+
+			if (count($strings) > 0) {
+				return TypeCombinator::union(...$strings);
+			}
+		}
+
+		$accessoryTypes = [];
+		if ($leftStringType->isNonEmptyString()->and($rightStringType->isNonEmptyString())->yes()) {
+			$accessoryTypes[] = new AccessoryNonFalsyStringType();
+		} elseif ($leftStringType->isNonFalsyString()->or($rightStringType->isNonFalsyString())->yes()) {
+			$accessoryTypes[] = new AccessoryNonFalsyStringType();
+		} elseif ($leftStringType->isNonEmptyString()->or($rightStringType->isNonEmptyString())->yes()) {
+			$accessoryTypes[] = new AccessoryNonEmptyStringType();
+		}
+
+		if ($leftStringType->isLiteralString()->and($rightStringType->isLiteralString())->yes()) {
+			$accessoryTypes[] = new AccessoryLiteralStringType();
+		}
+
+		if ($leftStringType->isLowercaseString()->and($rightStringType->isLowercaseString())->yes()) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+
+		if ($leftStringType->isUppercaseString()->and($rightStringType->isUppercaseString())->yes()) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+
+		$leftNumericStringNonEmpty = TypeCombinator::remove($leftStringType, new ConstantStringType(''));
+		if ($leftNumericStringNonEmpty->isNumericString()->yes()) {
+			$allRightConstantsZeroOrMore = false;
+			foreach ($rightConstantStrings as $rightConstantString) {
+				if ($rightConstantString->getValue() === '') {
+					continue;
+				}
+
+				if (
+					!is_numeric($rightConstantString->getValue())
+					|| Strings::match($rightConstantString->getValue(), '#^[0-9]+$#') === null
+				) {
+					$allRightConstantsZeroOrMore = false;
+					break;
+				}
+
+				$allRightConstantsZeroOrMore = true;
+			}
+
+			$zeroOrMoreInteger = IntegerRangeType::fromInterval(0, null);
+			$nonNegativeRight = $allRightConstantsZeroOrMore || $zeroOrMoreInteger->isSuperTypeOf($right)->yes();
+			if ($nonNegativeRight) {
+				$accessoryTypes[] = new AccessoryNumericStringType();
+			}
+		}
+
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+			return new IntersectionType($accessoryTypes);
+		}
+
+		return new StringType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getArrayType(Expr\Array_ $expr, callable $getTypeCallback): Type
+	{
+		if (count($expr->items) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+			return $this->oversizedArrayBuilder->build($expr, $getTypeCallback);
+		}
+
+		$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+		$isList = null;
+		foreach ($expr->items as $arrayItem) {
+			$valueType = $getTypeCallback($arrayItem->value);
+			if ($arrayItem->unpack) {
+				$constantArrays = $valueType->getConstantArrays();
+				if (count($constantArrays) === 1) {
+					$constantArrayType = $constantArrays[0];
+					$hasStringKey = false;
+					foreach ($constantArrayType->getKeyTypes() as $keyType) {
+						if ($keyType->isString()->yes()) {
+							$hasStringKey = true;
+							break;
+						}
+					}
+
+					foreach ($constantArrayType->getValueTypes() as $i => $innerValueType) {
+						if ($hasStringKey && $this->phpVersion->supportsArrayUnpackingWithStringKeys()) {
+							$arrayBuilder->setOffsetValueType($constantArrayType->getKeyTypes()[$i], $innerValueType, $constantArrayType->isOptionalKey($i));
+						} else {
+							$arrayBuilder->setOffsetValueType(null, $innerValueType, $constantArrayType->isOptionalKey($i));
+						}
+					}
+				} else {
+					$arrayBuilder->degradeToGeneralArray();
+
+					if ($this->phpVersion->supportsArrayUnpackingWithStringKeys() && !$valueType->getIterableKeyType()->isString()->no()) {
+						$isList = false;
+						$offsetType = $valueType->getIterableKeyType();
+					} else {
+						$isList ??= $arrayBuilder->isList();
+						$offsetType = new IntegerType();
+					}
+
+					$arrayBuilder->setOffsetValueType($offsetType, $valueType->getIterableValueType(), !$valueType->isIterableAtLeastOnce()->yes());
+				}
+			} else {
+				$arrayBuilder->setOffsetValueType(
+					$arrayItem->key !== null ? $getTypeCallback($arrayItem->key) : null,
+					$valueType,
+				);
+			}
+		}
+
+		$arrayType = $arrayBuilder->getArray();
+		if ($isList === true) {
+			return TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+		}
+
+		return $arrayType;
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getBitwiseAndType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
+						$resultType = $this->getTypeFromValue($leftTypeInner->getValue() & $rightTypeInner->getValue());
+					} else {
+						$leftNumberType = $leftTypeInner->toNumber();
+						$rightNumberType = $rightTypeInner->toNumber();
+
+						if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+							return new ErrorType();
+						}
+
+						if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+							throw new ShouldNotHappenException();
+						}
+
+						$resultType = $this->getTypeFromValue($leftNumberType->getValue() & $rightNumberType->getValue());
+					}
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
+			return new StringType();
+		}
+
+		$leftNumberType = $leftType->toNumber();
+		$rightNumberType = $rightType->toNumber();
+
+		if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		if ($rightNumberType instanceof ConstantIntegerType && $rightNumberType->getValue() >= 0) {
+			return IntegerRangeType::fromInterval(0, $rightNumberType->getValue());
+		}
+		if ($leftNumberType instanceof ConstantIntegerType && $leftNumberType->getValue() >= 0) {
+			return IntegerRangeType::fromInterval(0, $leftNumberType->getValue());
+		}
+
+		return new IntegerType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getBitwiseOrType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
+						$resultType = $this->getTypeFromValue($leftTypeInner->getValue() | $rightTypeInner->getValue());
+					} else {
+						$leftNumberType = $leftTypeInner->toNumber();
+						$rightNumberType = $rightTypeInner->toNumber();
+
+						if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+							return new ErrorType();
+						}
+
+						if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+							throw new ShouldNotHappenException();
+						}
+
+						$resultType = $this->getTypeFromValue($leftNumberType->getValue() | $rightNumberType->getValue());
+					}
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
+			return new StringType();
+		}
+
+		if (TypeCombinator::union($leftType->toNumber(), $rightType->toNumber()) instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		return new IntegerType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getBitwiseXorType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
+						$resultType = $this->getTypeFromValue($leftTypeInner->getValue() ^ $rightTypeInner->getValue());
+					} else {
+						$leftNumberType = $leftTypeInner->toNumber();
+						$rightNumberType = $rightTypeInner->toNumber();
+
+						if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+							return new ErrorType();
+						}
+
+						if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+							throw new ShouldNotHappenException();
+						}
+
+						$resultType = $this->getTypeFromValue($leftNumberType->getValue() ^ $rightNumberType->getValue());
+					}
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
+			return new StringType();
+		}
+
+		if (TypeCombinator::union($leftType->toNumber(), $rightType->toNumber()) instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		return new IntegerType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getSpaceshipType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$callbackLeftType = $getTypeCallback($left);
+		$callbackRightType = $getTypeCallback($right);
+
+		if ($callbackLeftType instanceof NeverType || $callbackRightType instanceof NeverType) {
+			return $this->getNeverType($callbackLeftType, $callbackRightType);
+		}
+
+		$leftTypes = $callbackLeftType->getConstantScalarTypes();
+		$rightTypes = $callbackRightType->getConstantScalarTypes();
+
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0 && $leftTypesCount * $rightTypesCount <= self::CALCULATE_SCALARS_LIMIT) {
+			$resultTypes = [];
+			foreach ($leftTypes as $leftType) {
+				foreach ($rightTypes as $rightType) {
+					$leftValue = $leftType->getValue();
+					$rightValue = $rightType->getValue();
+					$resultType = $this->getTypeFromValue($leftValue <=> $rightValue);
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		return IntegerRangeType::fromInterval(-1, 1);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getDivType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					if (in_array($rightNumberType->getValue(), [0, 0.0], true)) {
+						return new ErrorType();
+					}
+
+					$resultType = $this->getTypeFromValue($leftNumberType->getValue() / $rightNumberType->getValue()); // @phpstan-ignore binaryOp.invalid
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$rightScalarValues = $rightType->toNumber()->getConstantScalarValues();
+		foreach ($rightScalarValues as $scalarValue) {
+			if ($scalarValue === 0 || $scalarValue === 0.0) {
+				return new ErrorType();
+			}
+		}
+
+		return $this->resolveCommonMath(new BinaryOp\Div($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getModType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		if ($leftType->toNumber() instanceof ErrorType || $rightType->toNumber() instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					$rightIntegerValue = (int) $rightNumberType->getValue();
+					if ($rightIntegerValue === 0) {
+						return new ErrorType();
+					}
+
+					$resultType = $this->getTypeFromValue((int) $leftNumberType->getValue() % $rightIntegerValue);
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$integerType = $rightType->toInteger();
+		if ($integerType instanceof ConstantIntegerType && $integerType->getValue() === 1) {
+			return new ConstantIntegerType(0);
+		}
+
+		$rightScalarValues = $rightType->toNumber()->getConstantScalarValues();
+		foreach ($rightScalarValues as $scalarValue) {
+
+			if ($scalarValue === 0 || $scalarValue === 0.0) {
+				return new ErrorType();
+			}
+		}
+
+		$positiveInt = IntegerRangeType::fromInterval(0, null);
+		if ($rightType->isInteger()->yes()) {
+			$rangeMin = null;
+			$rangeMax = null;
+
+			if ($rightType instanceof IntegerRangeType) {
+				$rangeMax = $rightType->getMax() !== null ? $rightType->getMax() - 1 : null;
+			} elseif ($rightType instanceof ConstantIntegerType) {
+				$rangeMax = $rightType->getValue() - 1;
+			} elseif ($rightType instanceof UnionType) {
+				foreach ($rightType->getTypes() as $type) {
+					if ($type instanceof IntegerRangeType) {
+						if ($type->getMax() === null) {
+							$rangeMax = null;
+						} else {
+							$rangeMax = max($rangeMax, $type->getMax());
+						}
+					} elseif ($type instanceof ConstantIntegerType) {
+						$rangeMax = max($rangeMax, $type->getValue() - 1);
+					}
+				}
+			}
+
+			if ($positiveInt->isSuperTypeOf($leftType)->yes()) {
+				$rangeMin = 0;
+			} elseif ($rangeMax !== null) {
+				$rangeMin = $rangeMax * -1;
+			}
+
+			return IntegerRangeType::fromInterval($rangeMin, $rangeMax);
+		} elseif ($positiveInt->isSuperTypeOf($leftType)->yes()) {
+			return IntegerRangeType::fromInterval(0, null);
+		}
+
+		return new IntegerType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getPlusType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					$resultType = $this->getTypeFromValue($leftNumberType->getValue() + $rightNumberType->getValue());
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$leftConstantArrays = $leftType->getConstantArrays();
+		$rightConstantArrays = $rightType->getConstantArrays();
+
+		$leftCount = count($leftConstantArrays);
+		$rightCount = count($rightConstantArrays);
+		if ($leftCount > 0 && $rightCount > 0
+			&& ($leftCount + $rightCount < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT)) {
+			$resultTypes = [];
+			foreach ($rightConstantArrays as $rightConstantArray) {
+				foreach ($leftConstantArrays as $leftConstantArray) {
+					$newArrayBuilder = ConstantArrayTypeBuilder::createFromConstantArray($rightConstantArray);
+					foreach ($leftConstantArray->getKeyTypes() as $i => $leftKeyType) {
+						$optional = $leftConstantArray->isOptionalKey($i);
+						$valueType = $leftConstantArray->getOffsetValueType($leftKeyType);
+						if (!$optional) {
+							if ($rightConstantArray->hasOffsetValueType($leftKeyType)->maybe()) {
+								$valueType = TypeCombinator::union($valueType, $rightConstantArray->getOffsetValueType($leftKeyType));
+							}
+						}
+						$newArrayBuilder->setOffsetValueType(
+							$leftKeyType,
+							$valueType,
+							$optional,
+						);
+					}
+					$resultTypes[] = $newArrayBuilder->getArray();
+				}
+			}
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$leftIsArray = $leftType->isArray();
+		$rightIsArray = $rightType->isArray();
+		if ($leftIsArray->yes() && $rightIsArray->yes()) {
+			if ($leftType->getIterableKeyType()->equals($rightType->getIterableKeyType())) {
+				// to preserve BenevolentUnionType
+				$keyType = $leftType->getIterableKeyType();
+			} else {
+				$keyTypes = [];
+				foreach ([
+					$leftType->getIterableKeyType(),
+					$rightType->getIterableKeyType(),
+				] as $keyType) {
+					$keyTypes[] = $keyType;
+				}
+				$keyType = TypeCombinator::union(...$keyTypes);
+			}
+
+			$arrayType = new ArrayType(
+				$keyType,
+				TypeCombinator::union($leftType->getIterableValueType(), $rightType->getIterableValueType()),
+			);
+
+			if ($leftType->isIterableAtLeastOnce()->yes() || $rightType->isIterableAtLeastOnce()->yes()) {
+				$arrayType = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
+			}
+			if ($leftType->isList()->yes() && $rightType->isList()->yes()) {
+				$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+			}
+
+			return $arrayType;
+		}
+
+		if ($leftType instanceof MixedType && $rightType instanceof MixedType) {
+			if (
+				($leftIsArray->no() && $rightIsArray->no())
+			) {
+				return new BenevolentUnionType([
+					new FloatType(),
+					new IntegerType(),
+				]);
+			}
+			return new BenevolentUnionType([
+				new FloatType(),
+				new IntegerType(),
+				new ArrayType(new MixedType(), new MixedType()),
+			]);
+		}
+
+		if (
+			($leftIsArray->yes() && $rightIsArray->no())
+			|| ($leftIsArray->no() && $rightIsArray->yes())
+		) {
+			return new ErrorType();
+		}
+
+		if (
+			($leftIsArray->yes() && $rightIsArray->maybe())
+			|| ($leftIsArray->maybe() && $rightIsArray->yes())
+		) {
+			$resultType = new ArrayType(new MixedType(), new MixedType());
+			if ($leftType->isIterableAtLeastOnce()->yes() || $rightType->isIterableAtLeastOnce()->yes()) {
+				return TypeCombinator::intersect($resultType, new NonEmptyArrayType());
+			}
+
+			return $resultType;
+		}
+
+		if ($leftIsArray->maybe() && $rightIsArray->maybe()) {
+			$plusable = new UnionType([
+				new StringType(),
+				new FloatType(),
+				new IntegerType(),
+				new ArrayType(new MixedType(), new MixedType()),
+				new BooleanType(),
+			]);
+
+			$plusableSuperTypeOfLeft = $plusable->isSuperTypeOf($leftType)->yes();
+			$plusableSuperTypeOfRight = $plusable->isSuperTypeOf($rightType)->yes();
+			if ($plusableSuperTypeOfLeft && $plusableSuperTypeOfRight) {
+				return TypeCombinator::union($leftType, $rightType);
+			}
+			if ($plusableSuperTypeOfLeft && $rightType instanceof MixedType) {
+				return $leftType;
+			}
+			if ($plusableSuperTypeOfRight && $leftType instanceof MixedType) {
+				return $rightType;
+			}
+		}
+
+		return $this->resolveCommonMath(new BinaryOp\Plus($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getMinusType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					$resultType = $this->getTypeFromValue($leftNumberType->getValue() - $rightNumberType->getValue());
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		return $this->resolveCommonMath(new BinaryOp\Minus($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getMulType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					$resultType = $this->getTypeFromValue($leftNumberType->getValue() * $rightNumberType->getValue());
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$leftNumberType = $leftType->toNumber();
+		if ($leftNumberType instanceof ConstantIntegerType && $leftNumberType->getValue() === 0) {
+			if ($rightType->isFloat()->yes()) {
+				return new ConstantFloatType(0.0);
+			}
+			return new ConstantIntegerType(0);
+		}
+		$rightNumberType = $rightType->toNumber();
+		if ($rightNumberType instanceof ConstantIntegerType && $rightNumberType->getValue() === 0) {
+			if ($leftType->isFloat()->yes()) {
+				return new ConstantFloatType(0.0);
+			}
+			return new ConstantIntegerType(0);
+		}
+
+		return $this->resolveCommonMath(new BinaryOp\Mul($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getPowType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		$exponentiatedTyped = $leftType->exponentiate($rightType);
+		if (!$exponentiatedTyped instanceof ErrorType) {
+			return $exponentiatedTyped;
+		}
+
+		$extensionSpecified = $this->callOperatorTypeSpecifyingExtensions(new BinaryOp\Pow($left, $right), $leftType, $rightType);
+		if ($extensionSpecified !== null) {
+			return $extensionSpecified;
+		}
+
+		return new ErrorType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getShiftLeftType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					if ($rightNumberType->getValue() < 0) {
+						return new ErrorType();
+					}
+
+					$resultType = $this->getTypeFromValue(intval($leftNumberType->getValue()) << intval($rightNumberType->getValue()));
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$leftNumberType = $leftType->toNumber();
+		$rightNumberType = $rightType->toNumber();
+
+		if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		return $this->resolveCommonMath(new Expr\BinaryOp\ShiftLeft($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getShiftRightType(Expr $left, Expr $right, callable $getTypeCallback): Type
+	{
+		$leftType = $getTypeCallback($left);
+		$rightType = $getTypeCallback($right);
+
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return $this->getNeverType($leftType, $rightType);
+		}
+
+		$leftTypes = $leftType->getConstantScalarTypes();
+		$rightTypes = $rightType->getConstantScalarTypes();
+		$leftTypesCount = count($leftTypes);
+		$rightTypesCount = count($rightTypes);
+		if ($leftTypesCount > 0 && $rightTypesCount > 0) {
+			$resultTypes = [];
+			$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
+			foreach ($leftTypes as $leftTypeInner) {
+				foreach ($rightTypes as $rightTypeInner) {
+					$leftNumberType = $leftTypeInner->toNumber();
+					$rightNumberType = $rightTypeInner->toNumber();
+
+					if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+						return new ErrorType();
+					}
+
+					if (!$leftNumberType instanceof ConstantScalarType || !$rightNumberType instanceof ConstantScalarType) {
+						throw new ShouldNotHappenException();
+					}
+
+					if ($rightNumberType->getValue() < 0) {
+						return new ErrorType();
+					}
+
+					$resultType = $this->getTypeFromValue(intval($leftNumberType->getValue()) >> intval($rightNumberType->getValue()));
+					if ($generalize) {
+						$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
+					}
+					$resultTypes[] = $resultType;
+				}
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$leftNumberType = $leftType->toNumber();
+		$rightNumberType = $rightType->toNumber();
+
+		if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		return $this->resolveCommonMath(new Expr\BinaryOp\ShiftRight($left, $right), $leftType, $rightType);
+	}
+
+	/**
+	 * @return TypeResult<BooleanType>
+	 */
+	public function resolveIdenticalType(Type $leftType, Type $rightType): TypeResult
+	{
+		if ($leftType instanceof NeverType || $rightType instanceof NeverType) {
+			return new TypeResult(new ConstantBooleanType(false), []);
+		}
+
+		if ($leftType instanceof ConstantScalarType && $rightType instanceof ConstantScalarType) {
+			return new TypeResult(new ConstantBooleanType($leftType->getValue() === $rightType->getValue()), []);
+		}
+
+		$leftTypeFiniteTypes = $leftType->getFiniteTypes();
+		$rightTypeFiniteType = $rightType->getFiniteTypes();
+		if (count($leftTypeFiniteTypes) === 1 && count($rightTypeFiniteType) === 1) {
+			return new TypeResult(new ConstantBooleanType($leftTypeFiniteTypes[0]->equals($rightTypeFiniteType[0])), []);
+		}
+
+		$leftIsSuperTypeOfRight = $leftType->isSuperTypeOf($rightType);
+		$rightIsSuperTypeOfLeft = $rightType->isSuperTypeOf($leftType);
+		if ($leftIsSuperTypeOfRight->no() && $rightIsSuperTypeOfLeft->no()) {
+			return new TypeResult(new ConstantBooleanType(false), array_merge($leftIsSuperTypeOfRight->reasons, $rightIsSuperTypeOfLeft->reasons));
+		}
+
+		if ($leftType instanceof ConstantArrayType && $rightType instanceof ConstantArrayType) {
+			return $this->resolveConstantArrayTypeComparison($leftType, $rightType, fn ($leftValueType, $rightValueType): TypeResult => $this->resolveIdenticalType($leftValueType, $rightValueType));
+		}
+
+		return new TypeResult(new BooleanType(), []);
+	}
+
+	/**
+	 * @return TypeResult<BooleanType>
+	 */
+	public function resolveEqualType(Type $leftType, Type $rightType): TypeResult
+	{
+		if (
+			($leftType->isEnum()->yes() && $rightType->isTrue()->no())
+			|| ($rightType->isEnum()->yes() && $leftType->isTrue()->no())
+		) {
+			return $this->resolveIdenticalType($leftType, $rightType);
+		}
+
+		if ($leftType instanceof ConstantArrayType && $rightType instanceof ConstantArrayType) {
+			return $this->resolveConstantArrayTypeComparison($leftType, $rightType, fn ($leftValueType, $rightValueType): TypeResult => $this->resolveEqualType($leftValueType, $rightValueType));
+		}
+
+		return new TypeResult($leftType->looseCompare($rightType, $this->phpVersion), []);
+	}
+
+	/**
+	 * @param callable(Type, Type): TypeResult<BooleanType> $valueComparisonCallback
+	 * @return TypeResult<BooleanType>
+	 */
+	private function resolveConstantArrayTypeComparison(ConstantArrayType $leftType, ConstantArrayType $rightType, callable $valueComparisonCallback): TypeResult
+	{
+		$leftKeyTypes = $leftType->getKeyTypes();
+		$rightKeyTypes = $rightType->getKeyTypes();
+		$leftValueTypes = $leftType->getValueTypes();
+		$rightValueTypes = $rightType->getValueTypes();
+
+		$resultType = new ConstantBooleanType(true);
+
+		foreach ($leftKeyTypes as $i => $leftKeyType) {
+			$leftOptional = $leftType->isOptionalKey($i);
+			if ($leftOptional) {
+				$resultType = new BooleanType();
+			}
+
+			if (count($rightKeyTypes) === 0) {
+				if (!$leftOptional) {
+					return new TypeResult(new ConstantBooleanType(false), []);
+				}
+				continue;
+			}
+
+			$found = false;
+			foreach ($rightKeyTypes as $j => $rightKeyType) {
+				unset($rightKeyTypes[$j]);
+
+				if ($leftKeyType->equals($rightKeyType)) {
+					$found = true;
+					break;
+				} elseif (!$rightType->isOptionalKey($j)) {
+					return new TypeResult(new ConstantBooleanType(false), []);
+				}
+			}
+
+			if (!$found) {
+				if (!$leftOptional) {
+					return new TypeResult(new ConstantBooleanType(false), []);
+				}
+				continue;
+			}
+
+			if (!isset($j)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$rightOptional = $rightType->isOptionalKey($j);
+			if ($rightOptional) {
+				$resultType = new BooleanType();
+				if ($leftOptional) {
+					continue;
+				}
+			}
+
+			$leftIdenticalToRightResult = $valueComparisonCallback($leftValueTypes[$i], $rightValueTypes[$j]);
+			$leftIdenticalToRight = $leftIdenticalToRightResult->type;
+			if ($leftIdenticalToRight->isFalse()->yes()) {
+				return $leftIdenticalToRightResult;
+			}
+			$resultType = TypeCombinator::union($resultType, $leftIdenticalToRight);
+		}
+
+		foreach (array_keys($rightKeyTypes) as $j) {
+			if (!$rightType->isOptionalKey($j)) {
+				return new TypeResult(new ConstantBooleanType(false), []);
+			}
+			$resultType = new BooleanType();
+		}
+
+		return new TypeResult($resultType->toBoolean(), []);
+	}
+
+	private function callOperatorTypeSpecifyingExtensions(Expr\BinaryOp $expr, Type $leftType, Type $rightType): ?Type
+	{
+		$operatorSigil = $expr->getOperatorSigil();
+		$operatorTypeSpecifyingExtensions = $this->operatorTypeSpecifyingExtensionRegistryProvider->getRegistry()->getOperatorTypeSpecifyingExtensions($operatorSigil, $leftType, $rightType);
+
+		/** @var Type[] $extensionTypes */
+		$extensionTypes = [];
+
+		foreach ($operatorTypeSpecifyingExtensions as $extension) {
+			$extensionTypes[] = $extension->specifyType($operatorSigil, $leftType, $rightType);
+		}
+
+		if (count($extensionTypes) > 0) {
+			return TypeCombinator::union(...$extensionTypes);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param BinaryOp\Plus|BinaryOp\Minus|BinaryOp\Mul|BinaryOp\Div|BinaryOp\ShiftLeft|BinaryOp\ShiftRight $expr
+	 */
+	private function resolveCommonMath(Expr\BinaryOp $expr, Type $leftType, Type $rightType): Type
+	{
+		$types = TypeCombinator::union($leftType, $rightType);
+		$leftNumberType = $leftType->toNumber();
+		$rightNumberType = $rightType->toNumber();
+
+		if (
+			!$types instanceof MixedType
+			&& (
+				$rightNumberType instanceof IntegerRangeType
+				|| $rightNumberType instanceof ConstantIntegerType
+				|| $rightNumberType instanceof UnionType
+			)
+		) {
+			if ($leftNumberType instanceof IntegerRangeType || $leftNumberType instanceof ConstantIntegerType) {
+				return $this->integerRangeMath(
+					$leftNumberType,
+					$expr,
+					$rightNumberType,
+				);
+			} elseif ($leftNumberType instanceof UnionType) {
+				$unionParts = [];
+
+				foreach ($leftNumberType->getTypes() as $type) {
+					$numberType = $type->toNumber();
+					if ($numberType instanceof IntegerRangeType || $numberType instanceof ConstantIntegerType) {
+						$unionParts[] = $this->integerRangeMath($numberType, $expr, $rightNumberType);
+					} else {
+						$unionParts[] = $numberType;
+					}
+				}
+
+				$union = TypeCombinator::union(...$unionParts);
+				if ($leftNumberType instanceof BenevolentUnionType) {
+					return TypeUtils::toBenevolentUnion($union)->toNumber();
+				}
+
+				return $union->toNumber();
+			}
+		}
+
+		$specifiedTypes = $this->callOperatorTypeSpecifyingExtensions($expr, $leftType, $rightType);
+		if ($specifiedTypes !== null) {
+			return $specifiedTypes;
+		}
+
+		if (
+			$leftType->isArray()->yes()
+			|| $rightType->isArray()->yes()
+			|| $types->isArray()->yes()
+		) {
+			return new ErrorType();
+		}
+
+		if ($leftNumberType instanceof ErrorType || $rightNumberType instanceof ErrorType) {
+			return new ErrorType();
+		}
+		if ($leftNumberType instanceof NeverType || $rightNumberType instanceof NeverType) {
+			return $this->getNeverType($leftNumberType, $rightNumberType);
+		}
+
+		if (
+			$leftNumberType->isFloat()->yes()
+			|| $rightNumberType->isFloat()->yes()
+		) {
+			if ($expr instanceof Expr\BinaryOp\ShiftLeft || $expr instanceof Expr\BinaryOp\ShiftRight) {
+				return new IntegerType();
+			}
+			return new FloatType();
+		}
+
+		$resultType = TypeCombinator::union($leftNumberType, $rightNumberType);
+		if ($expr instanceof Expr\BinaryOp\Div) {
+			if ($types instanceof MixedType || $resultType->isInteger()->yes()) {
+				return new BenevolentUnionType([new IntegerType(), new FloatType()]);
+			}
+
+			return new UnionType([new IntegerType(), new FloatType()]);
+		}
+
+		if ($types instanceof MixedType
+			|| $leftType instanceof BenevolentUnionType
+			|| $rightType instanceof BenevolentUnionType
+		) {
+			return TypeUtils::toBenevolentUnion($resultType);
+		}
+
+		return $resultType;
+	}
+
+	/**
+	 * @param ConstantIntegerType|IntegerRangeType $range
+	 * @param BinaryOp\Div|BinaryOp\Minus|BinaryOp\Mul|BinaryOp\Plus|BinaryOp\ShiftLeft|BinaryOp\ShiftRight $node
+	 */
+	private function integerRangeMath(Type $range, BinaryOp $node, Type $operand): Type
+	{
+		if ($range instanceof IntegerRangeType) {
+			$rangeMin = $range->getMin();
+			$rangeMax = $range->getMax();
+		} else {
+			$rangeMin = $range->getValue();
+			$rangeMax = $rangeMin;
+		}
+
+		if ($operand instanceof UnionType) {
+
+			$unionParts = [];
+
+			foreach ($operand->getTypes() as $type) {
+				$numberType = $type->toNumber();
+				if ($numberType instanceof IntegerRangeType || $numberType instanceof ConstantIntegerType) {
+					$unionParts[] = $this->integerRangeMath($range, $node, $numberType);
+				} else {
+					$unionParts[] = $type->toNumber();
+				}
+			}
+
+			$union = TypeCombinator::union(...$unionParts);
+			if ($operand instanceof BenevolentUnionType) {
+				return TypeUtils::toBenevolentUnion($union)->toNumber();
+			}
+
+			return $union->toNumber();
+		}
+
+		$operand = $operand->toNumber();
+		if ($operand instanceof IntegerRangeType) {
+			$operandMin = $operand->getMin();
+			$operandMax = $operand->getMax();
+		} elseif ($operand instanceof ConstantIntegerType) {
+			$operandMin = $operand->getValue();
+			$operandMax = $operand->getValue();
+		} else {
+			return $operand;
+		}
+
+		if ($node instanceof BinaryOp\Plus) {
+			if ($operand instanceof ConstantIntegerType) {
+				/** @var int|float|null $min */
+				$min = $rangeMin !== null ? $rangeMin + $operand->getValue() : null;
+
+				/** @var int|float|null $max */
+				$max = $rangeMax !== null ? $rangeMax + $operand->getValue() : null;
+			} else {
+				/** @var int|float|null $min */
+				$min = $rangeMin !== null && $operand->getMin() !== null ? $rangeMin + $operand->getMin() : null;
+
+				/** @var int|float|null $max */
+				$max = $rangeMax !== null && $operand->getMax() !== null ? $rangeMax + $operand->getMax() : null;
+			}
+		} elseif ($node instanceof BinaryOp\Minus) {
+			if ($operand instanceof ConstantIntegerType) {
+				/** @var int|float|null $min */
+				$min = $rangeMin !== null ? $rangeMin - $operand->getValue() : null;
+
+				/** @var int|float|null $max */
+				$max = $rangeMax !== null ? $rangeMax - $operand->getValue() : null;
+			} else {
+				if ($rangeMin === $rangeMax && $rangeMin !== null
+					&& ($operand->getMin() === null || $operand->getMax() === null)) {
+					$min = null;
+					$max = $rangeMin;
+				} else {
+					if ($operand->getMin() === null) {
+						$min = null;
+					} elseif ($rangeMin !== null) {
+						if ($operand->getMax() !== null) {
+							/** @var int|float $min */
+							$min = $rangeMin - $operand->getMax();
+						} else {
+							/** @var int|float $min */
+							$min = $rangeMin - $operand->getMin();
+						}
+					} else {
+						$min = null;
+					}
+
+					if ($operand->getMax() === null) {
+						$min = null;
+						$max = null;
+					} elseif ($rangeMax !== null) {
+						if ($rangeMin !== null && $operand->getMin() === null) {
+							/** @var int|float $min */
+							$min = $rangeMin - $operand->getMax();
+							$max = null;
+						} elseif ($operand->getMin() !== null) {
+							/** @var int|float $max */
+							$max = $rangeMax - $operand->getMin();
+						} else {
+							$max = null;
+						}
+					} else {
+						$max = null;
+					}
+
+					if ($min !== null && $max !== null && $min > $max) {
+						[$min, $max] = [$max, $min];
+					}
+				}
+			}
+		} elseif ($node instanceof Expr\BinaryOp\Mul) {
+			$min1 = $rangeMin === 0 || $operandMin === 0 ? 0 : ($rangeMin ?? -INF) * ($operandMin ?? -INF);
+			$min2 = $rangeMin === 0 || $operandMax === 0 ? 0 : ($rangeMin ?? -INF) * ($operandMax ?? INF);
+			$max1 = $rangeMax === 0 || $operandMin === 0 ? 0 : ($rangeMax ?? INF) * ($operandMin ?? -INF);
+			$max2 = $rangeMax === 0 || $operandMax === 0 ? 0 : ($rangeMax ?? INF) * ($operandMax ?? INF);
+
+			$min = min($min1, $min2, $max1, $max2);
+			$max = max($min1, $min2, $max1, $max2);
+
+			if (!is_finite($min)) {
+				$min = null;
+			}
+			if (!is_finite($max)) {
+				$max = null;
+			}
+		} elseif ($node instanceof Expr\BinaryOp\Div) {
+			if ($operand instanceof ConstantIntegerType) {
+				$min = $rangeMin !== null && $operand->getValue() !== 0 ? $rangeMin / $operand->getValue() : null;
+				$max = $rangeMax !== null && $operand->getValue() !== 0 ? $rangeMax / $operand->getValue() : null;
+			} else {
+				// Avoid division by zero when looking for the min and the max by using the closest int
+				$operandMin = $operandMin !== 0 ? $operandMin : 1;
+				$operandMax = $operandMax !== 0 ? $operandMax : -1;
+
+				if (
+					($operandMin < 0 || $operandMin === null)
+					&& ($operandMax > 0 || $operandMax === null)
+				) {
+					$negativeOperand = IntegerRangeType::fromInterval($operandMin, 0);
+					assert($negativeOperand instanceof IntegerRangeType);
+					$positiveOperand = IntegerRangeType::fromInterval(0, $operandMax);
+					assert($positiveOperand instanceof IntegerRangeType);
+
+					$result = TypeCombinator::union(
+						$this->integerRangeMath($range, $node, $negativeOperand),
+						$this->integerRangeMath($range, $node, $positiveOperand),
+					)->toNumber();
+
+					if ($result->equals(new UnionType([new IntegerType(), new FloatType()]))) {
+						return new BenevolentUnionType([new IntegerType(), new FloatType()]);
+					}
+
+					return $result;
+				}
+				if (
+					($rangeMin < 0 || $rangeMin === null)
+					&& ($rangeMax > 0 || $rangeMax === null)
+				) {
+					$negativeRange = IntegerRangeType::fromInterval($rangeMin, 0);
+					assert($negativeRange instanceof IntegerRangeType);
+					$positiveRange = IntegerRangeType::fromInterval(0, $rangeMax);
+					assert($positiveRange instanceof IntegerRangeType);
+
+					$result = TypeCombinator::union(
+						$this->integerRangeMath($negativeRange, $node, $operand),
+						$this->integerRangeMath($positiveRange, $node, $operand),
+					)->toNumber();
+
+					if ($result->equals(new UnionType([new IntegerType(), new FloatType()]))) {
+						return new BenevolentUnionType([new IntegerType(), new FloatType()]);
+					}
+
+					return $result;
+				}
+
+				$rangeMinSign = ($rangeMin ?? -INF) <=> 0;
+				$rangeMaxSign = ($rangeMax ?? INF) <=> 0;
+
+				$min1 = $operandMin !== null ? ($rangeMin ?? -INF) / $operandMin : $rangeMinSign * -0.1;
+				$min2 = $operandMax !== null ? ($rangeMin ?? -INF) / $operandMax : $rangeMinSign * 0.1;
+				$max1 = $operandMin !== null ? ($rangeMax ?? INF) / $operandMin : $rangeMaxSign * -0.1;
+				$max2 = $operandMax !== null ? ($rangeMax ?? INF) / $operandMax : $rangeMaxSign * 0.1;
+
+				$min = min($min1, $min2, $max1, $max2);
+				$max = max($min1, $min2, $max1, $max2);
+
+				if ($min === -INF) {
+					$min = null;
+				}
+				if ($max === INF) {
+					$max = null;
+				}
+			}
+
+			if ($min !== null && $max !== null && $min > $max) {
+				[$min, $max] = [$max, $min];
+			}
+
+			if (is_float($min)) {
+				$min = (int) ceil($min);
+			}
+			if (is_float($max)) {
+				$max = (int) floor($max);
+			}
+
+			// invert maximas on division with negative constants
+			if ((($range instanceof ConstantIntegerType && $range->getValue() < 0)
+					|| ($operand instanceof ConstantIntegerType && $operand->getValue() < 0))
+				&& ($min === null || $max === null)) {
+				[$min, $max] = [$max, $min];
+			}
+
+			if ($min === null && $max === null) {
+				return new BenevolentUnionType([new IntegerType(), new FloatType()]);
+			}
+
+			return TypeCombinator::union(IntegerRangeType::fromInterval($min, $max), new FloatType());
+		} elseif ($node instanceof Expr\BinaryOp\ShiftLeft) {
+			if (!$operand instanceof ConstantIntegerType) {
+				return new IntegerType();
+			}
+			if ($operand->getValue() < 0) {
+				return new ErrorType();
+			}
+			$min = $rangeMin !== null ? intval($rangeMin) << $operand->getValue() : null;
+			$max = $rangeMax !== null ? intval($rangeMax) << $operand->getValue() : null;
+		} elseif ($node instanceof Expr\BinaryOp\ShiftRight) {
+			if (!$operand instanceof ConstantIntegerType) {
+				return new IntegerType();
+			}
+			if ($operand->getValue() < 0) {
+				return new ErrorType();
+			}
+			$min = $rangeMin !== null ? intval($rangeMin) >> $operand->getValue() : null;
+			$max = $rangeMax !== null ? intval($rangeMax) >> $operand->getValue() : null;
+		} else {
+			throw new ShouldNotHappenException();
+		}
+
+		if (is_float($min)) {
+			$min = null;
+		}
+		if (is_float($max)) {
+			$max = null;
+		}
+
+		return IntegerRangeType::fromInterval($min, $max);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getClassConstFetchTypeByReflection(Name|Expr $class, string $constantName, ?ClassReflection $classReflection, callable $getTypeCallback): Type
+	{
+		$isObject = false;
+		if ($class instanceof Name) {
+			$constantClass = (string) $class;
+			$constantClassType = new ObjectType($constantClass);
+			$namesToResolve = [
+				'self',
+				'parent',
+			];
+			if ($classReflection !== null) {
+				if ($classReflection->isFinal()) {
+					$namesToResolve[] = 'static';
+				} elseif (strtolower($constantClass) === 'static') {
+					if (strtolower($constantName) === 'class') {
+						return new GenericClassStringType(new StaticType($classReflection));
+					}
+
+					$namesToResolve[] = 'static';
+					$isObject = true;
+				}
+			}
+			if (in_array(strtolower($constantClass), $namesToResolve, true)) {
+				$resolvedName = $this->resolveName($class, $classReflection);
+				if (strtolower($resolvedName) === 'parent' && strtolower($constantName) === 'class') {
+					return new ClassStringType();
+				}
+				$constantClassType = $this->resolveTypeByName($class, $classReflection);
+			}
+
+			if (strtolower($constantName) === 'class') {
+				return new ConstantStringType($constantClassType->getClassName(), true);
+			}
+		} elseif ($class instanceof String_ && strtolower($constantName) === 'class') {
+			return new ConstantStringType($class->value, true);
+		} else {
+			$constantClassType = $getTypeCallback($class);
+			$isObject = true;
+		}
+
+		if (strtolower($constantName) === 'class') {
+			return TypeTraverser::map(
+				$constantClassType,
+				function (Type $type, callable $traverse): Type {
+					if ($type instanceof UnionType || $type instanceof IntersectionType) {
+						return $traverse($type);
+					}
+
+					if ($type instanceof NullType) {
+						return $type;
+					}
+
+					if ($type instanceof EnumCaseObjectType) {
+						return TypeCombinator::intersect(
+							new GenericClassStringType(new ObjectType($type->getClassName())),
+							new AccessoryLiteralStringType(),
+						);
+					}
+
+					$objectClassNames = $type->getObjectClassNames();
+					if (count($objectClassNames) > 1) {
+						throw new ShouldNotHappenException();
+					}
+
+					if ($type instanceof TemplateType && $objectClassNames === []) {
+						return TypeCombinator::intersect(
+							new GenericClassStringType($type),
+							new AccessoryLiteralStringType(),
+						);
+					} elseif ($objectClassNames !== [] && $this->getReflectionProvider()->hasClass($objectClassNames[0])) {
+						$reflection = $this->getReflectionProvider()->getClass($objectClassNames[0]);
+						if ($reflection->isFinalByKeyword()) {
+							return new ConstantStringType($reflection->getName(), true);
+						}
+
+						return TypeCombinator::intersect(
+							new GenericClassStringType($type),
+							new AccessoryLiteralStringType(),
+						);
+					} elseif ($type->isObject()->yes()) {
+						return TypeCombinator::intersect(
+							new ClassStringType(),
+							new AccessoryLiteralStringType(),
+						);
+					}
+
+					return new ErrorType();
+				},
+			);
+		}
+
+		if ($constantClassType->isClassString()->yes()) {
+			if ($constantClassType->isConstantScalarValue()->yes()) {
+				$isObject = false;
+			}
+			$constantClassType = $constantClassType->getClassStringObjectType();
+		}
+
+		$types = [];
+		foreach ($constantClassType->getObjectClassNames() as $referencedClass) {
+			if (!$this->getReflectionProvider()->hasClass($referencedClass)) {
+				continue;
+			}
+
+			$constantClassReflection = $this->getReflectionProvider()->getClass($referencedClass);
+			if (!$constantClassReflection->hasConstant($constantName)) {
+				continue;
+			}
+
+			if ($constantClassReflection->isEnum() && $constantClassReflection->hasEnumCase($constantName)) {
+				$types[] = new EnumCaseObjectType($constantClassReflection->getName(), $constantName);
+				continue;
+			}
+
+			$resolvingName = sprintf('%s::%s', $constantClassReflection->getName(), $constantName);
+			if (array_key_exists($resolvingName, $this->currentlyResolvingClassConstant)) {
+				$types[] = new MixedType();
+				continue;
+			}
+
+			$this->currentlyResolvingClassConstant[$resolvingName] = true;
+
+			if (!$isObject) {
+				$reflectionConstant = $constantClassReflection->getNativeReflection()->getReflectionConstant($constantName);
+				if ($reflectionConstant === false) {
+					unset($this->currentlyResolvingClassConstant[$resolvingName]);
+					continue;
+				}
+				$reflectionConstantDeclaringClass = $reflectionConstant->getDeclaringClass();
+				$constantType = $this->getType($reflectionConstant->getValueExpression(), InitializerExprContext::fromClass($reflectionConstantDeclaringClass->getName(), $reflectionConstantDeclaringClass->getFileName() ?: null));
+				$nativeType = null;
+				if ($reflectionConstant->getType() !== null) {
+					$nativeType = TypehintHelper::decideTypeFromReflection($reflectionConstant->getType(), null, $constantClassReflection);
+				}
+				$types[] = $this->constantResolver->resolveClassConstantType(
+					$constantClassReflection->getName(),
+					$constantName,
+					$constantType,
+					$nativeType,
+				);
+				unset($this->currentlyResolvingClassConstant[$resolvingName]);
+				continue;
+			}
+
+			$constantReflection = $constantClassReflection->getConstant($constantName);
+			if (
+				!$constantClassReflection->isFinal()
+				&& !$constantReflection->isFinal()
+				&& !$constantReflection->hasPhpDocType()
+				&& !$constantReflection->hasNativeType()
+			) {
+				unset($this->currentlyResolvingClassConstant[$resolvingName]);
+				return new MixedType();
+			}
+
+			if (!$constantClassReflection->isFinal()) {
+				$constantType = $constantReflection->getValueType();
+			} else {
+				$constantType = $this->getType($constantReflection->getValueExpr(), InitializerExprContext::fromClassReflection($constantReflection->getDeclaringClass()));
+			}
+
+			$nativeType = $constantReflection->getNativeType();
+			$constantType = $this->constantResolver->resolveClassConstantType(
+				$constantClassReflection->getName(),
+				$constantName,
+				$constantType,
+				$nativeType,
+			);
+			unset($this->currentlyResolvingClassConstant[$resolvingName]);
+			$types[] = $constantType;
+		}
+
+		if (count($types) > 0) {
+			return TypeCombinator::union(...$types);
+		}
+
+		if (!$constantClassType->hasConstant($constantName)->yes()) {
+			return new ErrorType();
+		}
+
+		return $constantClassType->getConstant($constantName)->getValueType();
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getClassConstFetchType(Name|Expr $class, string $constantName, ?string $className, callable $getTypeCallback): Type
+	{
+		$classReflection = null;
+		if ($className !== null && $this->getReflectionProvider()->hasClass($className)) {
+			$classReflection = $this->getReflectionProvider()->getClass($className);
+		}
+
+		return $this->getClassConstFetchTypeByReflection($class, $constantName, $classReflection, $getTypeCallback);
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getUnaryMinusType(Expr $expr, callable $getTypeCallback): Type
+	{
+		$type = $getTypeCallback($expr)->toNumber();
+		$scalarValues = $type->getConstantScalarValues();
+
+		if (count($scalarValues) > 0) {
+			$newTypes = [];
+			foreach ($scalarValues as $scalarValue) {
+				if (is_int($scalarValue)) {
+					/** @var int|float $newValue */
+					$newValue = -$scalarValue;
+					if (!is_int($newValue)) {
+						return $type;
+					}
+					$newTypes[] = new ConstantIntegerType($newValue);
+				} elseif (is_float($scalarValue)) {
+					$newTypes[] = new ConstantFloatType(-$scalarValue);
+				}
+			}
+
+			return TypeCombinator::union(...$newTypes);
+		}
+
+		if ($type instanceof IntegerRangeType) {
+			return $getTypeCallback(new Expr\BinaryOp\Mul($expr, new Int_(-1)));
+		}
+
+		return $type;
+	}
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function getBitwiseNotType(Expr $expr, callable $getTypeCallback): Type
+	{
+		$exprType = $getTypeCallback($expr);
+		return TypeTraverser::map($exprType, static function (Type $type, callable $traverse): Type {
+			if ($type instanceof UnionType || $type instanceof IntersectionType) {
+				return $traverse($type);
+			}
+			if ($type instanceof ConstantStringType) {
+				return new ConstantStringType(~$type->getValue());
+			}
+			if ($type->isString()->yes()) {
+				$accessories = [
+					new StringType(),
+				];
+				if ($type->isNonEmptyString()->yes()) {
+					$accessories[] = new AccessoryNonEmptyStringType();
+				}
+				// it is not useful to apply numeric and literal strings here.
+				// numeric string isn't certainly kept numeric: 3v4l.org/JERDB
+
+				return TypeCombinator::intersect(...$accessories);
+			}
+			if ($type->isInteger()->yes() || $type->isFloat()->yes()) {
+				return new IntegerType(); //no const types here, result depends on PHP_INT_SIZE
+			}
+			return new ErrorType();
+		});
+	}
+
+	private function resolveName(Name $name, ?ClassReflection $classReflection): string
+	{
+		$originalClass = (string) $name;
+		if ($classReflection !== null) {
+			$lowerClass = strtolower($originalClass);
+
+			if (in_array($lowerClass, [
+				'self',
+				'static',
+			], true)) {
+				return $classReflection->getName();
+			} elseif ($lowerClass === 'parent') {
+				if ($classReflection->getParentClass() !== null) {
+					return $classReflection->getParentClass()->getName();
+				}
+			}
+		}
+
+		return $originalClass;
+	}
+
+	private function resolveTypeByName(Name $name, ?ClassReflection $classReflection): TypeWithClassName
+	{
+		if ($name->toLowerString() === 'static' && $classReflection !== null) {
+			return new StaticType($classReflection);
+		}
+
+		$originalClass = $this->resolveName($name, $classReflection);
+		if ($classReflection !== null) {
+			$thisType = new ThisType($classReflection);
+			$ancestor = $thisType->getAncestorWithClassName($originalClass);
+			if ($ancestor !== null) {
+				return $ancestor;
+			}
+		}
+
+		return new ObjectType($originalClass);
+	}
+
+	/**
+	 * @param mixed $value
+	 */
+	private function getTypeFromValue($value): Type
+	{
+		return ConstantTypeHelper::getTypeFromValue($value);
+	}
+
+	private function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProviderProvider->getReflectionProvider();
+	}
+
+	private function getNeverType(Type $leftType, Type $rightType): Type
+	{
+		// make sure we don't lose the explicit flag in the process
+		if ($leftType instanceof NeverType && $leftType->isExplicit()) {
+			return $leftType;
+		}
+		if ($rightType instanceof NeverType && $rightType->isExplicit()) {
+			return $rightType;
+		}
+		return new NeverType();
+	}
+
+}
diff --git a/src/Reflection/MethodPrototypeReflection.php b/src/Reflection/MethodPrototypeReflection.php
new file mode 100644
index 00000000..7df60650
--- /dev/null
+++ b/src/Reflection/MethodPrototypeReflection.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Type;
+
+final class MethodPrototypeReflection implements ClassMemberReflection
+{
+
+	/**
+	 * @param ParametersAcceptor[] $variants
+	 */
+	public function __construct(
+		private string $name,
+		private ClassReflection $declaringClass,
+		private bool $isStatic,
+		private bool $isPrivate,
+		private bool $isPublic,
+		private bool $isAbstract,
+		private bool $isFinal,
+		private bool $isInternal,
+		private array $variants,
+		private ?Type $tentativeReturnType,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->isStatic;
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->isPrivate;
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->isPublic;
+	}
+
+	public function isAbstract(): bool
+	{
+		return $this->isAbstract;
+	}
+
+	public function isFinal(): bool
+	{
+		return $this->isFinal;
+	}
+
+	public function isInternal(): bool
+	{
+		return $this->isInternal;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	/**
+	 * @return ParametersAcceptor[]
+	 */
+	public function getVariants(): array
+	{
+		return $this->variants;
+	}
+
+	public function getTentativeReturnType(): ?Type
+	{
+		return $this->tentativeReturnType;
+	}
+
+}
diff --git a/src/Reflection/MethodReflection.php b/src/Reflection/MethodReflection.php
new file mode 100644
index 00000000..6ff0b447
--- /dev/null
+++ b/src/Reflection/MethodReflection.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/** @api */
+interface MethodReflection extends ClassMemberReflection
+{
+
+	public function getName(): string;
+
+	public function getPrototype(): ClassMemberReflection;
+
+	/**
+	 * @return list<ParametersAcceptor>
+	 */
+	public function getVariants(): array;
+
+	public function isDeprecated(): TrinaryLogic;
+
+	public function getDeprecatedDescription(): ?string;
+
+	public function isFinal(): TrinaryLogic;
+
+	public function isInternal(): TrinaryLogic;
+
+	public function getThrowType(): ?Type;
+
+	public function hasSideEffects(): TrinaryLogic;
+
+}
diff --git a/src/Reflection/MethodsClassReflectionExtension.php b/src/Reflection/MethodsClassReflectionExtension.php
new file mode 100644
index 00000000..585f187c
--- /dev/null
+++ b/src/Reflection/MethodsClassReflectionExtension.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/**
+ * This is the interface custom methods class reflection extensions implement.
+ *
+ * To register it in the configuration file use the `phpstan.broker.methodsClassReflectionExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyMethodsClassReflectionExtension
+ *		tags:
+ *			- phpstan.broker.methodsClassReflectionExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/class-reflection-extensions
+ *
+ * @api
+ */
+interface MethodsClassReflectionExtension
+{
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool;
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): MethodReflection;
+
+}
diff --git a/src/Reflection/MissingConstantFromReflectionException.php b/src/Reflection/MissingConstantFromReflectionException.php
new file mode 100644
index 00000000..59426a14
--- /dev/null
+++ b/src/Reflection/MissingConstantFromReflectionException.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Exception;
+use function sprintf;
+
+final class MissingConstantFromReflectionException extends Exception
+{
+
+	public function __construct(
+		string $className,
+		string $constantName,
+	)
+	{
+		parent::__construct(
+			sprintf(
+				'Constant %s was not found in reflection of class %s.',
+				$constantName,
+				$className,
+			),
+		);
+	}
+
+}
diff --git a/src/Reflection/MissingMethodFromReflectionException.php b/src/Reflection/MissingMethodFromReflectionException.php
new file mode 100644
index 00000000..d2b9f681
--- /dev/null
+++ b/src/Reflection/MissingMethodFromReflectionException.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Exception;
+use function sprintf;
+
+final class MissingMethodFromReflectionException extends Exception
+{
+
+	public function __construct(
+		string $className,
+		string $methodName,
+	)
+	{
+		parent::__construct(
+			sprintf(
+				'Method %s() was not found in reflection of class %s.',
+				$methodName,
+				$className,
+			),
+		);
+	}
+
+}
diff --git a/src/Reflection/MissingPropertyFromReflectionException.php b/src/Reflection/MissingPropertyFromReflectionException.php
new file mode 100644
index 00000000..be09607c
--- /dev/null
+++ b/src/Reflection/MissingPropertyFromReflectionException.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Exception;
+use function sprintf;
+
+final class MissingPropertyFromReflectionException extends Exception
+{
+
+	public function __construct(
+		string $className,
+		string $propertyName,
+	)
+	{
+		parent::__construct(
+			sprintf(
+				'Property $%s was not found in reflection of class %s.',
+				$propertyName,
+				$className,
+			),
+		);
+	}
+
+}
diff --git a/src/Reflection/Mixin/MixinMethodReflection.php b/src/Reflection/Mixin/MixinMethodReflection.php
new file mode 100644
index 00000000..e167ea2a
--- /dev/null
+++ b/src/Reflection/Mixin/MixinMethodReflection.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Reflection\Mixin;
+return;
+
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+final class MixinMethodReflection implements MethodReflection
+{
+
+	public function __construct(private MethodReflection $reflection, private bool $static)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->reflection->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->static;
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->reflection->getDocComment();
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this->reflection->getPrototype();
+	}
+
+	public function getVariants(): array
+	{
+		return $this->reflection->getVariants();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->reflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->reflection->getDeprecatedDescription();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->reflection->isFinal();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->reflection->getThrowType();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return $this->reflection->hasSideEffects();
+	}
+
+}
diff --git a/src/Reflection/Mixin/MixinMethodsClassReflectionExtension.php b/src/Reflection/Mixin/MixinMethodsClassReflectionExtension.php
new file mode 100644
index 00000000..5e523f8f
--- /dev/null
+++ b/src/Reflection/Mixin/MixinMethodsClassReflectionExtension.php
@@ -0,0 +1,100 @@
+<?php 
+
+namespace PHPStan\Reflection\Mixin;
+return;
+
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\MethodsClassReflectionExtension;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function array_intersect;
+use function count;
+
+final class MixinMethodsClassReflectionExtension implements MethodsClassReflectionExtension
+{
+
+	/** @var array<string, array<string, true>> */
+	private array $inProcess = [];
+
+	/**
+	 * @param string[] $mixinExcludeClasses
+	 */
+	public function __construct(private array $mixinExcludeClasses)
+	{
+	}
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		return $this->findMethod($classReflection, $methodName) !== null;
+	}
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): MethodReflection
+	{
+		$method = $this->findMethod($classReflection, $methodName);
+		if ($method === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $method;
+	}
+
+	private function findMethod(ClassReflection $classReflection, string $methodName): ?MethodReflection
+	{
+		$mixinTypes = $classReflection->getResolvedMixinTypes();
+		foreach ($mixinTypes as $type) {
+			if (count(array_intersect($type->getObjectClassNames(), $this->mixinExcludeClasses)) > 0) {
+				continue;
+			}
+
+			$typeDescription = $type->describe(VerbosityLevel::typeOnly());
+			if (isset($this->inProcess[$typeDescription][$methodName])) {
+				continue;
+			}
+
+			$this->inProcess[$typeDescription][$methodName] = true;
+
+			if (!$type->hasMethod($methodName)->yes()) {
+				unset($this->inProcess[$typeDescription][$methodName]);
+				continue;
+			}
+
+			$method = $type->getMethod($methodName, new OutOfClassScope());
+
+			unset($this->inProcess[$typeDescription][$methodName]);
+
+			$static = $method->isStatic();
+			if (
+				!$static
+				&& $classReflection->hasNativeMethod('__callStatic')
+			) {
+				$static = true;
+			}
+
+			return new MixinMethodReflection($method, $static);
+		}
+
+		foreach ($classReflection->getTraits() as $traitClass) {
+			$methodWithDeclaringClass = $this->findMethod($traitClass, $methodName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		while ($parentClass !== null) {
+			$method = $this->findMethod($parentClass, $methodName);
+			if ($method !== null) {
+				return $method;
+			}
+
+			$parentClass = $parentClass->getParentClass();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/Mixin/MixinPropertiesClassReflectionExtension.php b/src/Reflection/Mixin/MixinPropertiesClassReflectionExtension.php
new file mode 100644
index 00000000..fceb035f
--- /dev/null
+++ b/src/Reflection/Mixin/MixinPropertiesClassReflectionExtension.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Reflection\Mixin;
+return;
+
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function array_intersect;
+use function count;
+
+final class MixinPropertiesClassReflectionExtension implements PropertiesClassReflectionExtension
+{
+
+	/** @var array<string, array<string, true>> */
+	private array $inProcess = [];
+
+	/**
+	 * @param string[] $mixinExcludeClasses
+	 */
+	public function __construct(private array $mixinExcludeClasses)
+	{
+	}
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		return $this->findProperty($classReflection, $propertyName) !== null;
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): PropertyReflection
+	{
+		$property = $this->findProperty($classReflection, $propertyName);
+		if ($property === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $property;
+	}
+
+	private function findProperty(ClassReflection $classReflection, string $propertyName): ?PropertyReflection
+	{
+		$mixinTypes = $classReflection->getResolvedMixinTypes();
+		foreach ($mixinTypes as $type) {
+			if (count(array_intersect($type->getObjectClassNames(), $this->mixinExcludeClasses)) > 0) {
+				continue;
+			}
+
+			$typeDescription = $type->describe(VerbosityLevel::typeOnly());
+			if (isset($this->inProcess[$typeDescription][$propertyName])) {
+				continue;
+			}
+
+			$this->inProcess[$typeDescription][$propertyName] = true;
+
+			if (!$type->hasProperty($propertyName)->yes()) {
+				unset($this->inProcess[$typeDescription][$propertyName]);
+				continue;
+			}
+
+			$property = $type->getProperty($propertyName, new OutOfClassScope());
+			unset($this->inProcess[$typeDescription][$propertyName]);
+
+			return $property;
+		}
+
+		foreach ($classReflection->getTraits() as $traitClass) {
+			$methodWithDeclaringClass = $this->findProperty($traitClass, $propertyName);
+			if ($methodWithDeclaringClass === null) {
+				continue;
+			}
+
+			return $methodWithDeclaringClass;
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		while ($parentClass !== null) {
+			$property = $this->findProperty($parentClass, $propertyName);
+			if ($property !== null) {
+				return $property;
+			}
+
+			$parentClass = $parentClass->getParentClass();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/NamespaceAnswerer.php b/src/Reflection/NamespaceAnswerer.php
new file mode 100644
index 00000000..89dac78f
--- /dev/null
+++ b/src/Reflection/NamespaceAnswerer.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/** @api */
+interface NamespaceAnswerer
+{
+
+	/**
+	 * @return non-empty-string|null
+	 */
+	public function getNamespace(): ?string;
+
+}
diff --git a/src/Reflection/Native/ExtendedNativeParameterReflection.php b/src/Reflection/Native/ExtendedNativeParameterReflection.php
new file mode 100644
index 00000000..f486564f
--- /dev/null
+++ b/src/Reflection/Native/ExtendedNativeParameterReflection.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Reflection\Native;
+return;
+
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class ExtendedNativeParameterReflection implements ExtendedParameterReflection
+{
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private bool $optional,
+		private Type $type,
+		private Type $phpDocType,
+		private Type $nativeType,
+		private PassedByReference $passedByReference,
+		private bool $variadic,
+		private ?Type $defaultValue,
+		private ?Type $outType,
+		private TrinaryLogic $immediatelyInvokedCallable,
+		private ?Type $closureThisType,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->optional;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->phpDocType;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return !$this->nativeType instanceof MixedType || $this->nativeType->isExplicitMixed();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->nativeType;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+	public function getOutType(): ?Type
+	{
+		return $this->outType;
+	}
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic
+	{
+		return $this->immediatelyInvokedCallable;
+	}
+
+	public function getClosureThisType(): ?Type
+	{
+		return $this->closureThisType;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Native/NativeFunctionReflection.php b/src/Reflection/Native/NativeFunctionReflection.php
new file mode 100644
index 00000000..c18b67d6
--- /dev/null
+++ b/src/Reflection/Native/NativeFunctionReflection.php
@@ -0,0 +1,154 @@
+<?php 
+
+namespace PHPStan\Reflection\Native;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use function count;
+
+final class NativeFunctionReflection implements FunctionReflection
+{
+
+	private Assertions $assertions;
+
+	private TrinaryLogic $returnsByReference;
+
+	/**
+	 * @param list<ExtendedParametersAcceptor> $variants
+	 * @param list<ExtendedParametersAcceptor>|null $namedArgumentsVariants
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private array $variants,
+		private ?array $namedArgumentsVariants,
+		private ?Type $throwType,
+		private TrinaryLogic $hasSideEffects,
+		private bool $isDeprecated,
+		?Assertions $assertions,
+		private ?string $phpDocComment,
+		?TrinaryLogic $returnsByReference,
+		private bool $acceptsNamedArguments,
+		private array $attributes,
+	)
+	{
+		$this->assertions = $assertions ?? Assertions::createEmpty();
+		$this->returnsByReference = $returnsByReference ?? TrinaryLogic::createMaybe();
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getFileName(): ?string
+	{
+		return null;
+	}
+
+	public function getVariants(): array
+	{
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		$variants = $this->getVariants();
+		if (count($variants) !== 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $variants[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return $this->namedArgumentsVariants;
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->throwType;
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isDeprecated);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if ($this->isVoid()) {
+			return TrinaryLogic::createYes();
+		}
+
+		return $this->hasSideEffects;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->hasSideEffects()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return $this->hasSideEffects->negate();
+	}
+
+	private function isVoid(): bool
+	{
+		foreach ($this->variants as $variant) {
+			if (!$variant->getReturnType()->isVoid()->yes()) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function isBuiltin(): bool
+	{
+		return true;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->assertions;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->phpDocComment;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return $this->returnsByReference;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->acceptsNamedArguments);
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Native/NativeMethodReflection.php b/src/Reflection/Native/NativeMethodReflection.php
new file mode 100644
index 00000000..8adaac01
--- /dev/null
+++ b/src/Reflection/Native/NativeMethodReflection.php
@@ -0,0 +1,227 @@
+<?php 
+
+namespace PHPStan\Reflection\Native;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\MethodPrototypeReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use ReflectionException;
+use function count;
+use function strtolower;
+
+final class NativeMethodReflection implements ExtendedMethodReflection
+{
+
+	/**
+	 * @param list<ExtendedParametersAcceptor> $variants
+	 * @param list<ExtendedParametersAcceptor>|null $namedArgumentsVariants
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassReflection $declaringClass,
+		private ReflectionMethod $reflection,
+		private array $variants,
+		private ?array $namedArgumentsVariants,
+		private TrinaryLogic $hasSideEffects,
+		private ?Type $throwType,
+		private Assertions $assertions,
+		private bool $acceptsNamedArguments,
+		private ?Type $selfOutType,
+		private ?string $phpDocComment,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isAbstract());
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		try {
+			$prototypeMethod = $this->reflection->getPrototype();
+			$prototypeDeclaringClass = $this->declaringClass->getAncestorWithClassName($prototypeMethod->getDeclaringClass()->getName());
+			if ($prototypeDeclaringClass === null) {
+				$prototypeDeclaringClass = $this->reflectionProvider->getClass($prototypeMethod->getDeclaringClass()->getName());
+			}
+
+			if (!$prototypeDeclaringClass->hasNativeMethod($prototypeMethod->getName())) {
+				return $this;
+			}
+
+			$tentativeReturnType = null;
+			if ($prototypeMethod->getTentativeReturnType() !== null) {
+				$tentativeReturnType = TypehintHelper::decideTypeFromReflection($prototypeMethod->getTentativeReturnType(), null, $prototypeDeclaringClass);
+			}
+
+			return new MethodPrototypeReflection(
+				$prototypeMethod->getName(),
+				$prototypeDeclaringClass,
+				$prototypeMethod->isStatic(),
+				$prototypeMethod->isPrivate(),
+				$prototypeMethod->isPublic(),
+				$prototypeMethod->isAbstract(),
+				$prototypeMethod->isFinal(),
+				$prototypeMethod->isInternal(),
+				$prototypeDeclaringClass->getNativeMethod($prototypeMethod->getName())->getVariants(),
+				$tentativeReturnType,
+			);
+		} catch (ReflectionException) {
+			return $this;
+		}
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getVariants(): array
+	{
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		$variants = $this->getVariants();
+		if (count($variants) !== 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $variants[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return $this->namedArgumentsVariants;
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isDeprecated());
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isInternal());
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isFinal());
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return $this->isFinal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->throwType;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		$name = strtolower($this->getName());
+		$isVoid = $this->isVoid();
+		if (
+			$name !== '__construct'
+			&& $isVoid
+		) {
+			return TrinaryLogic::createYes();
+		}
+
+		return $this->hasSideEffects;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->hasSideEffects()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return $this->hasSideEffects->negate();
+	}
+
+	private function isVoid(): bool
+	{
+		foreach ($this->variants as $variant) {
+			if (!$variant->getReturnType()->isVoid()->yes()) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->phpDocComment;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->assertions;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->declaringClass->acceptsNamedArguments() && $this->acceptsNamedArguments);
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return $this->selfOutType;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->returnsReference());
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Native/NativeParameterReflection.php b/src/Reflection/Native/NativeParameterReflection.php
new file mode 100644
index 00000000..1f1b5406
--- /dev/null
+++ b/src/Reflection/Native/NativeParameterReflection.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Reflection\Native;
+return;
+
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class NativeParameterReflection implements ParameterReflection
+{
+
+	public function __construct(
+		private string $name,
+		private bool $optional,
+		private Type $type,
+		private PassedByReference $passedByReference,
+		private bool $variadic,
+		private ?Type $defaultValue,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->optional;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+	public function union(self $other): self
+	{
+		return new self(
+			$this->name,
+			$this->optional && $other->optional,
+			TypeCombinator::union($this->type, $other->type),
+			$this->passedByReference->combine($other->passedByReference),
+			$this->variadic && $other->variadic,
+			$this->optional && $other->optional ? $this->defaultValue : null,
+		);
+	}
+
+}
diff --git a/src/Reflection/PHPStan/NativeReflectionEnumReturnDynamicReturnTypeExtension.php b/src/Reflection/PHPStan/NativeReflectionEnumReturnDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..609a8672
--- /dev/null
+++ b/src/Reflection/PHPStan/NativeReflectionEnumReturnDynamicReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Reflection\PHPStan;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+
+final class NativeReflectionEnumReturnDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	/**
+	 * @param class-string $className
+	 */
+	public function __construct(private PhpVersion $phpVersion, private string $className, private string $methodName)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return $this->className;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === $this->methodName;
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			return null;
+		}
+
+		return new ObjectType(ReflectionClass::class);
+	}
+
+}
diff --git a/src/Reflection/ParameterReflection.php b/src/Reflection/ParameterReflection.php
new file mode 100644
index 00000000..5883ce63
--- /dev/null
+++ b/src/Reflection/ParameterReflection.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Type;
+
+/** @api */
+interface ParameterReflection
+{
+
+	public function getName(): string;
+
+	public function isOptional(): bool;
+
+	public function getType(): Type;
+
+	public function passedByReference(): PassedByReference;
+
+	public function isVariadic(): bool;
+
+	public function getDefaultValue(): ?Type;
+
+}
diff --git a/src/Reflection/ParametersAcceptor.php b/src/Reflection/ParametersAcceptor.php
new file mode 100644
index 00000000..17335767
--- /dev/null
+++ b/src/Reflection/ParametersAcceptor.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Type;
+
+/** @api */
+interface ParametersAcceptor
+{
+
+	public const VARIADIC_FUNCTIONS = [
+		'func_get_args',
+		'func_get_arg',
+		'func_num_args',
+	];
+
+	public function getTemplateTypeMap(): TemplateTypeMap;
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap;
+
+	/**
+	 * @return list<ParameterReflection>
+	 */
+	public function getParameters(): array;
+
+	public function isVariadic(): bool;
+
+	public function getReturnType(): Type;
+
+}
diff --git a/src/Reflection/ParametersAcceptorSelector.php b/src/Reflection/ParametersAcceptorSelector.php
new file mode 100644
index 00000000..07c30823
--- /dev/null
+++ b/src/Reflection/ParametersAcceptorSelector.php
@@ -0,0 +1,1102 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use Closure;
+use PhpParser\Node;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\ParameterVariableOriginalValueExpr;
+use PHPStan\Parser\ArrayFilterArgVisitor;
+use PHPStan\Parser\ArrayFindArgVisitor;
+use PHPStan\Parser\ArrayMapArgVisitor;
+use PHPStan\Parser\ArrayWalkArgVisitor;
+use PHPStan\Parser\ClosureBindArgVisitor;
+use PHPStan\Parser\ClosureBindToVarVisitor;
+use PHPStan\Parser\CurlSetOptArgVisitor;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\Php\DummyParameter;
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\LateResolvableType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+use function array_key_exists;
+use function array_key_last;
+use function array_map;
+use function array_merge;
+use function array_slice;
+use function array_values;
+use function constant;
+use function count;
+use function defined;
+use function is_string;
+use function sprintf;
+use const ARRAY_FILTER_USE_BOTH;
+use const ARRAY_FILTER_USE_KEY;
+use const CURLOPT_SSL_VERIFYHOST;
+
+/**
+ * @api
+ */
+final class ParametersAcceptorSelector
+{
+
+	/**
+	 * @param Node\Arg[] $args
+	 * @param ParametersAcceptor[] $parametersAcceptors
+	 * @param ParametersAcceptor[]|null $namedArgumentsVariants
+	 */
+	public static function selectFromArgs(
+		Scope $scope,
+		array $args,
+		array $parametersAcceptors,
+		?array $namedArgumentsVariants = null,
+	): ParametersAcceptor
+	{
+		$types = [];
+		$unpack = false;
+		if (
+			count($args) > 0
+			&& count($parametersAcceptors) > 0
+		) {
+			$arrayMapArgs = $args[0]->value->getAttribute(ArrayMapArgVisitor::ATTRIBUTE_NAME);
+			if ($arrayMapArgs !== null) {
+				$acceptor = $parametersAcceptors[0];
+				$parameters = $acceptor->getParameters();
+				$callbackParameters = [];
+				foreach ($arrayMapArgs as $arg) {
+					$argType = $scope->getType($arg->value);
+					if ($arg->unpack) {
+						$constantArrays = $argType->getConstantArrays();
+						if (count($constantArrays) > 0) {
+							foreach ($constantArrays as $constantArray) {
+								$valueTypes = $constantArray->getValueTypes();
+								foreach ($valueTypes as $valueType) {
+									$callbackParameters[] = new DummyParameter('item', $scope->getIterableValueType($valueType), false, PassedByReference::createNo(), false, null);
+								}
+							}
+						}
+					} else {
+						$callbackParameters[] = new DummyParameter('item', $scope->getIterableValueType($argType), false, PassedByReference::createNo(), false, null);
+					}
+				}
+				$parameters[0] = new NativeParameterReflection(
+					$parameters[0]->getName(),
+					$parameters[0]->isOptional(),
+					new UnionType([
+						new CallableType($callbackParameters, new MixedType(), false),
+						new NullType(),
+					]),
+					$parameters[0]->passedByReference(),
+					$parameters[0]->isVariadic(),
+					$parameters[0]->getDefaultValue(),
+				);
+				$parametersAcceptors = [
+					new FunctionVariant(
+						$acceptor->getTemplateTypeMap(),
+						$acceptor->getResolvedTemplateTypeMap(),
+						$parameters,
+						$acceptor->isVariadic(),
+						$acceptor->getReturnType(),
+						$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+					),
+				];
+			}
+
+			if (count($args) >= 3 && (bool) $args[0]->getAttribute(CurlSetOptArgVisitor::ATTRIBUTE_NAME)) {
+				$optType = $scope->getType($args[1]->value);
+				if ($optType instanceof ConstantIntegerType) {
+					$optValueType = self::getCurlOptValueType($optType->getValue());
+
+					if ($optValueType !== null) {
+						$acceptor = $parametersAcceptors[0];
+						$parameters = $acceptor->getParameters();
+
+						$parameters[2] = new NativeParameterReflection(
+							$parameters[2]->getName(),
+							$parameters[2]->isOptional(),
+							$optValueType,
+							$parameters[2]->passedByReference(),
+							$parameters[2]->isVariadic(),
+							$parameters[2]->getDefaultValue(),
+						);
+
+						$parametersAcceptors = [
+							new FunctionVariant(
+								$acceptor->getTemplateTypeMap(),
+								$acceptor->getResolvedTemplateTypeMap(),
+								array_values($parameters),
+								$acceptor->isVariadic(),
+								$acceptor->getReturnType(),
+								$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+							),
+						];
+					}
+				}
+			}
+
+			if (isset($args[0]) && (bool) $args[0]->getAttribute(ArrayFilterArgVisitor::ATTRIBUTE_NAME)) {
+				if (isset($args[2])) {
+					$mode = $scope->getType($args[2]->value);
+					if ($mode instanceof ConstantIntegerType) {
+						if ($mode->getValue() === ARRAY_FILTER_USE_KEY) {
+							$arrayFilterParameters = [
+								new DummyParameter('key', $scope->getIterableKeyType($scope->getType($args[0]->value)), false, PassedByReference::createNo(), false, null),
+							];
+						} elseif ($mode->getValue() === ARRAY_FILTER_USE_BOTH) {
+							$arrayFilterParameters = [
+								new DummyParameter('item', $scope->getIterableValueType($scope->getType($args[0]->value)), false, PassedByReference::createNo(), false, null),
+								new DummyParameter('key', $scope->getIterableKeyType($scope->getType($args[0]->value)), false, PassedByReference::createNo(), false, null),
+							];
+						}
+					}
+				}
+
+				$acceptor = $parametersAcceptors[0];
+				$parameters = $acceptor->getParameters();
+				$parameters[1] = new NativeParameterReflection(
+					$parameters[1]->getName(),
+					$parameters[1]->isOptional(),
+					new UnionType([
+						new CallableType(
+							$arrayFilterParameters ?? [
+								new DummyParameter('item', $scope->getIterableValueType($scope->getType($args[0]->value)), false, PassedByReference::createNo(), false, null),
+							],
+							new BooleanType(),
+							false,
+						),
+						new NullType(),
+					]),
+					$parameters[1]->passedByReference(),
+					$parameters[1]->isVariadic(),
+					$parameters[1]->getDefaultValue(),
+				);
+				$parametersAcceptors = [
+					new FunctionVariant(
+						$acceptor->getTemplateTypeMap(),
+						$acceptor->getResolvedTemplateTypeMap(),
+						array_values($parameters),
+						$acceptor->isVariadic(),
+						$acceptor->getReturnType(),
+						$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+					),
+				];
+			}
+
+			if (isset($args[0]) && (bool) $args[0]->getAttribute(ArrayWalkArgVisitor::ATTRIBUTE_NAME)) {
+				$arrayWalkParameters = [
+					new DummyParameter('item', $scope->getIterableValueType($scope->getType($args[0]->value)), false, PassedByReference::createReadsArgument(), false, null),
+					new DummyParameter('key', $scope->getIterableKeyType($scope->getType($args[0]->value)), false, PassedByReference::createNo(), false, null),
+				];
+				if (isset($args[2])) {
+					$arrayWalkParameters[] = new DummyParameter('arg', $scope->getType($args[2]->value), false, PassedByReference::createNo(), false, null);
+				}
+
+				$acceptor = $parametersAcceptors[0];
+				$parameters = $acceptor->getParameters();
+				$parameters[1] = new NativeParameterReflection(
+					$parameters[1]->getName(),
+					$parameters[1]->isOptional(),
+					new CallableType($arrayWalkParameters, new MixedType(), false),
+					$parameters[1]->passedByReference(),
+					$parameters[1]->isVariadic(),
+					$parameters[1]->getDefaultValue(),
+				);
+				$parametersAcceptors = [
+					new FunctionVariant(
+						$acceptor->getTemplateTypeMap(),
+						$acceptor->getResolvedTemplateTypeMap(),
+						array_values($parameters),
+						$acceptor->isVariadic(),
+						$acceptor->getReturnType(),
+						$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+					),
+				];
+			}
+
+			if (isset($args[0]) && (bool) $args[0]->getAttribute(ArrayFindArgVisitor::ATTRIBUTE_NAME)) {
+				$acceptor = $parametersAcceptors[0];
+				$parameters = $acceptor->getParameters();
+				$argType = $scope->getType($args[0]->value);
+				$parameters[1] = new NativeParameterReflection(
+					$parameters[1]->getName(),
+					$parameters[1]->isOptional(),
+					new CallableType(
+						[
+							new DummyParameter('value', $scope->getIterableValueType($argType), false, PassedByReference::createNo(), false, null),
+							new DummyParameter('key', $scope->getIterableKeyType($argType), false, PassedByReference::createNo(), false, null),
+						],
+						new BooleanType(),
+						false,
+					),
+					$parameters[1]->passedByReference(),
+					$parameters[1]->isVariadic(),
+					$parameters[1]->getDefaultValue(),
+				);
+				$parametersAcceptors = [
+					new FunctionVariant(
+						$acceptor->getTemplateTypeMap(),
+						$acceptor->getResolvedTemplateTypeMap(),
+						array_values($parameters),
+						$acceptor->isVariadic(),
+						$acceptor->getReturnType(),
+						$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+					),
+				];
+			}
+
+			if (isset($args[0])) {
+				$closureBindToVar = $args[0]->getAttribute(ClosureBindToVarVisitor::ATTRIBUTE_NAME);
+				if (
+					$closureBindToVar !== null
+					&& $closureBindToVar instanceof Node\Expr\Variable
+					&& is_string($closureBindToVar->name)
+				) {
+					$varType = $scope->getType($closureBindToVar);
+					if ((new ObjectType(Closure::class))->isSuperTypeOf($varType)->yes()) {
+						$inFunction = $scope->getFunction();
+						if ($inFunction !== null) {
+							$closureThisParameters = [];
+							foreach ($inFunction->getParameters() as $parameter) {
+								if ($parameter->getClosureThisType() === null) {
+									continue;
+								}
+								$closureThisParameters[$parameter->getName()] = $parameter->getClosureThisType();
+							}
+							if (array_key_exists($closureBindToVar->name, $closureThisParameters)) {
+								if ($scope->hasExpressionType(new ParameterVariableOriginalValueExpr($closureBindToVar->name))->yes()) {
+									$acceptor = $parametersAcceptors[0];
+									$parameters = $acceptor->getParameters();
+									$parameters[0] = new NativeParameterReflection(
+										$parameters[0]->getName(),
+										$parameters[0]->isOptional(),
+										$closureThisParameters[$closureBindToVar->name],
+										$parameters[0]->passedByReference(),
+										$parameters[0]->isVariadic(),
+										$parameters[0]->getDefaultValue(),
+									);
+									$parametersAcceptors = [
+										new FunctionVariant(
+											$acceptor->getTemplateTypeMap(),
+											$acceptor->getResolvedTemplateTypeMap(),
+											$parameters,
+											$acceptor->isVariadic(),
+											$acceptor->getReturnType(),
+											$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+										),
+									];
+								}
+							}
+						}
+					}
+				}
+
+				if (
+					$args[0]->getAttribute(ClosureBindArgVisitor::ATTRIBUTE_NAME) !== null
+					&& $args[0]->value instanceof Node\Expr\Variable
+					&& is_string($args[0]->value->name)
+				) {
+					$closureVarName = $args[0]->value->name;
+					$inFunction = $scope->getFunction();
+					if ($inFunction !== null) {
+						$closureThisParameters = [];
+						foreach ($inFunction->getParameters() as $parameter) {
+							if ($parameter->getClosureThisType() === null) {
+								continue;
+							}
+							$closureThisParameters[$parameter->getName()] = $parameter->getClosureThisType();
+						}
+						if (array_key_exists($closureVarName, $closureThisParameters)) {
+							if ($scope->hasExpressionType(new ParameterVariableOriginalValueExpr($closureVarName))->yes()) {
+								$acceptor = $parametersAcceptors[0];
+								$parameters = $acceptor->getParameters();
+								$parameters[1] = new NativeParameterReflection(
+									$parameters[1]->getName(),
+									$parameters[1]->isOptional(),
+									$closureThisParameters[$closureVarName],
+									$parameters[1]->passedByReference(),
+									$parameters[1]->isVariadic(),
+									$parameters[1]->getDefaultValue(),
+								);
+								$parametersAcceptors = [
+									new FunctionVariant(
+										$acceptor->getTemplateTypeMap(),
+										$acceptor->getResolvedTemplateTypeMap(),
+										array_values($parameters),
+										$acceptor->isVariadic(),
+										$acceptor->getReturnType(),
+										$acceptor instanceof ExtendedParametersAcceptor ? $acceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+									),
+								];
+							}
+						}
+					}
+				}
+			}
+		}
+
+		if (count($parametersAcceptors) === 1) {
+			$acceptor = $parametersAcceptors[0];
+			if (!self::hasAcceptorTemplateOrLateResolvableType($acceptor)) {
+				return $acceptor;
+			}
+		}
+
+		$reorderedArgs = $args;
+		$parameters = null;
+		$singleParametersAcceptor = null;
+		if (count($parametersAcceptors) === 1) {
+			$reorderedArgs = ArgumentsNormalizer::reorderArgs($parametersAcceptors[0], $args);
+			$singleParametersAcceptor = $parametersAcceptors[0];
+		}
+
+		$hasName = false;
+		foreach ($reorderedArgs ?? $args as $i => $arg) {
+			$originalArg = $arg->getAttribute(ArgumentsNormalizer::ORIGINAL_ARG_ATTRIBUTE) ?? $arg;
+			$parameter = null;
+			if ($singleParametersAcceptor !== null) {
+				$parameters = $singleParametersAcceptor->getParameters();
+				if (isset($parameters[$i])) {
+					$parameter = $parameters[$i];
+				} elseif (count($parameters) > 0 && $singleParametersAcceptor->isVariadic()) {
+					$parameter = $parameters[count($parameters) - 1];
+				}
+			}
+
+			if ($parameter !== null && $scope instanceof MutatingScope) {
+				$scope = $scope->pushInFunctionCall(null, $parameter);
+			}
+
+			$type = $scope->getType($originalArg->value);
+
+			if ($parameter !== null && $scope instanceof MutatingScope) {
+				$scope = $scope->popInFunctionCall();
+			}
+
+			if ($originalArg->name !== null) {
+				$index = $originalArg->name->toString();
+				$hasName = true;
+			} else {
+				$index = $i;
+			}
+			if ($originalArg->unpack) {
+				$unpack = true;
+				$types[$index] = $type->getIterableValueType();
+			} else {
+				$types[$index] = $type;
+			}
+		}
+
+		if ($hasName && $namedArgumentsVariants !== null) {
+			return self::selectFromTypes($types, $namedArgumentsVariants, $unpack);
+		}
+
+		return self::selectFromTypes($types, $parametersAcceptors, $unpack);
+	}
+
+	private static function hasAcceptorTemplateOrLateResolvableType(ParametersAcceptor $acceptor): bool
+	{
+		if (self::hasTemplateOrLateResolvableType($acceptor->getReturnType())) {
+			return true;
+		}
+
+		foreach ($acceptor->getParameters() as $parameter) {
+			if (
+				$parameter instanceof ExtendedParameterReflection
+				&& $parameter->getOutType() !== null
+				&& self::hasTemplateOrLateResolvableType($parameter->getOutType())
+			) {
+				return true;
+			}
+
+			if (
+				$parameter instanceof ExtendedParameterReflection
+				&& $parameter->getClosureThisType() !== null
+				&& self::hasTemplateOrLateResolvableType($parameter->getClosureThisType())
+			) {
+				return true;
+			}
+
+			if (!self::hasTemplateOrLateResolvableType($parameter->getType())) {
+				continue;
+			}
+
+			return true;
+		}
+
+		return false;
+	}
+
+	private static function hasTemplateOrLateResolvableType(Type $type): bool
+	{
+		$has = false;
+		TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$has): Type {
+			if ($type instanceof TemplateType || $type instanceof LateResolvableType) {
+				$has = true;
+				return $type;
+			}
+
+			return $traverse($type);
+		});
+
+		return $has;
+	}
+
+	/**
+	 * @param array<int|string, Type> $types
+	 * @param ParametersAcceptor[] $parametersAcceptors
+	 */
+	public static function selectFromTypes(
+		array $types,
+		array $parametersAcceptors,
+		bool $unpack,
+	): ParametersAcceptor
+	{
+		if (count($parametersAcceptors) === 1) {
+			return GenericParametersAcceptorResolver::resolve($types, $parametersAcceptors[0]);
+		}
+
+		if (count($parametersAcceptors) === 0) {
+			throw new ShouldNotHappenException(
+				'getVariants() must return at least one variant.',
+			);
+		}
+
+		$typesCount = count($types);
+		$acceptableAcceptors = [];
+
+		foreach ($parametersAcceptors as $parametersAcceptor) {
+			if ($unpack) {
+				$acceptableAcceptors[] = $parametersAcceptor;
+				continue;
+			}
+
+			$functionParametersMinCount = 0;
+			$functionParametersMaxCount = 0;
+			foreach ($parametersAcceptor->getParameters() as $parameter) {
+				if (!$parameter->isOptional()) {
+					$functionParametersMinCount++;
+				}
+
+				$functionParametersMaxCount++;
+			}
+
+			if ($typesCount < $functionParametersMinCount) {
+				continue;
+			}
+
+			if (
+				!$parametersAcceptor->isVariadic()
+				&& $typesCount > $functionParametersMaxCount
+			) {
+				continue;
+			}
+
+			$acceptableAcceptors[] = $parametersAcceptor;
+		}
+
+		if (count($acceptableAcceptors) === 0) {
+			return GenericParametersAcceptorResolver::resolve($types, self::combineAcceptors($parametersAcceptors));
+		}
+
+		if (count($acceptableAcceptors) === 1) {
+			return GenericParametersAcceptorResolver::resolve($types, $acceptableAcceptors[0]);
+		}
+
+		$winningAcceptors = [];
+		$winningCertainty = null;
+		foreach ($acceptableAcceptors as $acceptableAcceptor) {
+			$isSuperType = TrinaryLogic::createYes();
+			$acceptableAcceptor = GenericParametersAcceptorResolver::resolve($types, $acceptableAcceptor);
+			foreach ($acceptableAcceptor->getParameters() as $i => $parameter) {
+				if (!isset($types[$i])) {
+					if (!$unpack || count($types) <= 0) {
+						break;
+					}
+
+					$type = $types[array_key_last($types)];
+				} else {
+					$type = $types[$i];
+				}
+
+				if ($parameter->getType() instanceof MixedType) {
+					$isSuperType = $isSuperType->and(TrinaryLogic::createMaybe());
+				} else {
+					$isSuperType = $isSuperType->and($parameter->getType()->isSuperTypeOf($type)->result);
+				}
+			}
+
+			if ($isSuperType->no()) {
+				continue;
+			}
+
+			if ($winningCertainty === null) {
+				$winningAcceptors[] = $acceptableAcceptor;
+				$winningCertainty = $isSuperType;
+			} else {
+				$comparison = $winningCertainty->compareTo($isSuperType);
+				if ($comparison === $isSuperType) {
+					$winningAcceptors = [$acceptableAcceptor];
+					$winningCertainty = $isSuperType;
+				} elseif ($comparison === null) {
+					$winningAcceptors[] = $acceptableAcceptor;
+				}
+			}
+		}
+
+		if (count($winningAcceptors) === 0) {
+			return GenericParametersAcceptorResolver::resolve($types, self::combineAcceptors($acceptableAcceptors));
+		}
+
+		return GenericParametersAcceptorResolver::resolve($types, self::combineAcceptors($winningAcceptors));
+	}
+
+	/**
+	 * @param ParametersAcceptor[] $acceptors
+	 */
+	public static function combineAcceptors(array $acceptors): ExtendedParametersAcceptor
+	{
+		if (count($acceptors) === 0) {
+			throw new ShouldNotHappenException(
+				'getVariants() must return at least one variant.',
+			);
+		}
+		if (count($acceptors) === 1) {
+			return self::wrapAcceptor($acceptors[0]);
+		}
+
+		$minimumNumberOfParameters = null;
+		foreach ($acceptors as $acceptor) {
+			$acceptorParametersMinCount = 0;
+			foreach ($acceptor->getParameters() as $parameter) {
+				if ($parameter->isOptional()) {
+					continue;
+				}
+
+				$acceptorParametersMinCount++;
+			}
+
+			if ($minimumNumberOfParameters !== null && $minimumNumberOfParameters <= $acceptorParametersMinCount) {
+				continue;
+			}
+
+			$minimumNumberOfParameters = $acceptorParametersMinCount;
+		}
+
+		$parameters = [];
+		$isVariadic = false;
+		$returnTypes = [];
+		$phpDocReturnTypes = [];
+		$nativeReturnTypes = [];
+		$callableOccurred = false;
+		$throwPoints = [];
+		$isPure = TrinaryLogic::createNo();
+		$impurePoints = [];
+		$invalidateExpressions = [];
+		$usedVariables = [];
+		$acceptsNamedArguments = TrinaryLogic::createNo();
+
+		foreach ($acceptors as $acceptor) {
+			$returnTypes[] = $acceptor->getReturnType();
+
+			if ($acceptor instanceof ExtendedParametersAcceptor) {
+				$phpDocReturnTypes[] = $acceptor->getPhpDocReturnType();
+				$nativeReturnTypes[] = $acceptor->getNativeReturnType();
+			}
+			if ($acceptor instanceof CallableParametersAcceptor) {
+				$callableOccurred = true;
+				$throwPoints = array_merge($throwPoints, $acceptor->getThrowPoints());
+				$isPure = $isPure->or($acceptor->isPure());
+				$impurePoints = array_merge($impurePoints, $acceptor->getImpurePoints());
+				$invalidateExpressions = array_merge($invalidateExpressions, $acceptor->getInvalidateExpressions());
+				$usedVariables = array_merge($usedVariables, $acceptor->getUsedVariables());
+				$acceptsNamedArguments = $acceptsNamedArguments->or($acceptor->acceptsNamedArguments());
+			}
+			$isVariadic = $isVariadic || $acceptor->isVariadic();
+
+			foreach ($acceptor->getParameters() as $i => $parameter) {
+				if (!isset($parameters[$i])) {
+					$parameters[$i] = new ExtendedDummyParameter(
+						$parameter->getName(),
+						$parameter->getType(),
+						$i + 1 > $minimumNumberOfParameters,
+						$parameter->passedByReference(),
+						$parameter->isVariadic(),
+						$parameter->getDefaultValue(),
+						$parameter instanceof ExtendedParameterReflection ? $parameter->getNativeType() : new MixedType(),
+						$parameter instanceof ExtendedParameterReflection ? $parameter->getPhpDocType() : new MixedType(),
+						$parameter instanceof ExtendedParameterReflection ? $parameter->getOutType() : null,
+						$parameter instanceof ExtendedParameterReflection ? $parameter->isImmediatelyInvokedCallable() : TrinaryLogic::createMaybe(),
+						$parameter instanceof ExtendedParameterReflection ? $parameter->getClosureThisType() : null,
+						$parameter instanceof ExtendedParameterReflection ? $parameter->getAttributes() : [],
+					);
+					continue;
+				}
+
+				$isVariadic = $parameters[$i]->isVariadic() || $parameter->isVariadic();
+				$defaultValueLeft = $parameters[$i]->getDefaultValue();
+				$defaultValueRight = $parameter->getDefaultValue();
+				if ($defaultValueLeft !== null && $defaultValueRight !== null) {
+					$defaultValue = TypeCombinator::union($defaultValueLeft, $defaultValueRight);
+				} else {
+					$defaultValue = null;
+				}
+
+				$type = TypeCombinator::union($parameters[$i]->getType(), $parameter->getType());
+				$nativeType = $parameters[$i]->getNativeType();
+				$phpDocType = $parameters[$i]->getPhpDocType();
+				$outType = $parameters[$i]->getOutType();
+				$immediatelyInvokedCallable = $parameters[$i]->isImmediatelyInvokedCallable();
+				$closureThisType = $parameters[$i]->getClosureThisType();
+				$attributes = $parameters[$i]->getAttributes();
+				if ($parameter instanceof ExtendedParameterReflection) {
+					$nativeType = TypeCombinator::union($nativeType, $parameter->getNativeType());
+					$phpDocType = TypeCombinator::union($phpDocType, $parameter->getPhpDocType());
+
+					if ($parameter->getOutType() !== null) {
+						$outType = $outType === null ? null : TypeCombinator::union($outType, $parameter->getOutType());
+					} else {
+						$outType = null;
+					}
+
+					if ($parameter->getClosureThisType() !== null && $closureThisType !== null) {
+						$closureThisType = TypeCombinator::union($closureThisType, $parameter->getClosureThisType());
+					} else {
+						$closureThisType = null;
+					}
+
+					$immediatelyInvokedCallable = $parameter->isImmediatelyInvokedCallable()->or($immediatelyInvokedCallable);
+					$attributes = array_merge($attributes, $parameter->getAttributes());
+				} else {
+					$nativeType = new MixedType();
+					$phpDocType = $type;
+					$outType = null;
+					$immediatelyInvokedCallable = TrinaryLogic::createMaybe();
+					$closureThisType = null;
+				}
+
+				$parameters[$i] = new ExtendedDummyParameter(
+					$parameters[$i]->getName() !== $parameter->getName() ? sprintf('%s|%s', $parameters[$i]->getName(), $parameter->getName()) : $parameter->getName(),
+					$type,
+					$i + 1 > $minimumNumberOfParameters,
+					$parameters[$i]->passedByReference()->combine($parameter->passedByReference()),
+					$isVariadic,
+					$defaultValue,
+					$nativeType,
+					$phpDocType,
+					$outType,
+					$immediatelyInvokedCallable,
+					$closureThisType,
+					$attributes,
+				);
+
+				if ($isVariadic) {
+					$parameters = array_slice($parameters, 0, $i + 1);
+					break;
+				}
+			}
+		}
+
+		$returnType = TypeCombinator::union(...$returnTypes);
+		$phpDocReturnType = $phpDocReturnTypes === [] ? null : TypeCombinator::union(...$phpDocReturnTypes);
+		$nativeReturnType = $nativeReturnTypes === [] ? null : TypeCombinator::union(...$nativeReturnTypes);
+
+		if ($callableOccurred) {
+			return new ExtendedCallableFunctionVariant(
+				TemplateTypeMap::createEmpty(),
+				null,
+				array_values($parameters),
+				$isVariadic,
+				$returnType,
+				$phpDocReturnType ?? $returnType,
+				$nativeReturnType ?? new MixedType(),
+				null,
+				$throwPoints,
+				$isPure,
+				$impurePoints,
+				$invalidateExpressions,
+				$usedVariables,
+				$acceptsNamedArguments,
+			);
+		}
+
+		return new ExtendedFunctionVariant(
+			TemplateTypeMap::createEmpty(),
+			null,
+			array_values($parameters),
+			$isVariadic,
+			$returnType,
+			$phpDocReturnType ?? $returnType,
+			$nativeReturnType ?? new MixedType(),
+		);
+	}
+
+	private static function wrapAcceptor(ParametersAcceptor $acceptor): ExtendedParametersAcceptor
+	{
+		if ($acceptor instanceof ExtendedParametersAcceptor) {
+			return $acceptor;
+		}
+
+		if ($acceptor instanceof CallableParametersAcceptor) {
+			return new ExtendedCallableFunctionVariant(
+				$acceptor->getTemplateTypeMap(),
+				$acceptor->getResolvedTemplateTypeMap(),
+				array_map(static fn (ParameterReflection $parameter): ExtendedParameterReflection => self::wrapParameter($parameter), $acceptor->getParameters()),
+				$acceptor->isVariadic(),
+				$acceptor->getReturnType(),
+				$acceptor->getReturnType(),
+				new MixedType(),
+				TemplateTypeVarianceMap::createEmpty(),
+				$acceptor->getThrowPoints(),
+				$acceptor->isPure(),
+				$acceptor->getImpurePoints(),
+				$acceptor->getInvalidateExpressions(),
+				$acceptor->getUsedVariables(),
+				$acceptor->acceptsNamedArguments(),
+			);
+		}
+
+		return new ExtendedFunctionVariant(
+			$acceptor->getTemplateTypeMap(),
+			$acceptor->getResolvedTemplateTypeMap(),
+			array_map(static fn (ParameterReflection $parameter): ExtendedParameterReflection => self::wrapParameter($parameter), $acceptor->getParameters()),
+			$acceptor->isVariadic(),
+			$acceptor->getReturnType(),
+			$acceptor->getReturnType(),
+			new MixedType(),
+			TemplateTypeVarianceMap::createEmpty(),
+		);
+	}
+
+	private static function wrapParameter(ParameterReflection $parameter): ExtendedParameterReflection
+	{
+		return $parameter instanceof ExtendedParameterReflection ? $parameter : new ExtendedDummyParameter(
+			$parameter->getName(),
+			$parameter->getType(),
+			$parameter->isOptional(),
+			$parameter->passedByReference(),
+			$parameter->isVariadic(),
+			$parameter->getDefaultValue(),
+			new MixedType(),
+			$parameter->getType(),
+			null,
+			TrinaryLogic::createMaybe(),
+			null,
+			[],
+		);
+	}
+
+	private static function getCurlOptValueType(int $curlOpt): ?Type
+	{
+		if (defined('CURLOPT_SSL_VERIFYHOST') && $curlOpt === CURLOPT_SSL_VERIFYHOST) {
+			return new UnionType([new ConstantIntegerType(0), new ConstantIntegerType(2)]);
+		}
+
+		$boolConstants = [
+			'CURLOPT_AUTOREFERER',
+			'CURLOPT_COOKIESESSION',
+			'CURLOPT_CERTINFO',
+			'CURLOPT_CONNECT_ONLY',
+			'CURLOPT_CRLF',
+			'CURLOPT_DISALLOW_USERNAME_IN_URL',
+			'CURLOPT_DNS_SHUFFLE_ADDRESSES',
+			'CURLOPT_HAPROXYPROTOCOL',
+			'CURLOPT_SSH_COMPRESSION',
+			'CURLOPT_DNS_USE_GLOBAL_CACHE',
+			'CURLOPT_FAILONERROR',
+			'CURLOPT_SSL_FALSESTART',
+			'CURLOPT_FILETIME',
+			'CURLOPT_FOLLOWLOCATION',
+			'CURLOPT_FORBID_REUSE',
+			'CURLOPT_FRESH_CONNECT',
+			'CURLOPT_FTP_USE_EPRT',
+			'CURLOPT_FTP_USE_EPSV',
+			'CURLOPT_FTP_CREATE_MISSING_DIRS',
+			'CURLOPT_FTPAPPEND',
+			'CURLOPT_TCP_NODELAY',
+			'CURLOPT_FTPASCII',
+			'CURLOPT_FTPLISTONLY',
+			'CURLOPT_HEADER',
+			'CURLOPT_HTTP09_ALLOWED',
+			'CURLOPT_HTTPGET',
+			'CURLOPT_HTTPPROXYTUNNEL',
+			'CURLOPT_HTTP_CONTENT_DECODING',
+			'CURLOPT_KEEP_SENDING_ON_ERROR',
+			'CURLOPT_MUTE',
+			'CURLOPT_NETRC',
+			'CURLOPT_NOBODY',
+			'CURLOPT_NOPROGRESS',
+			'CURLOPT_NOSIGNAL',
+			'CURLOPT_PATH_AS_IS',
+			'CURLOPT_PIPEWAIT',
+			'CURLOPT_POST',
+			'CURLOPT_PUT',
+			'CURLOPT_RETURNTRANSFER',
+			'CURLOPT_SASL_IR',
+			'CURLOPT_SSL_ENABLE_ALPN',
+			'CURLOPT_SSL_ENABLE_NPN',
+			'CURLOPT_SSL_VERIFYPEER',
+			'CURLOPT_SSL_VERIFYSTATUS',
+			'CURLOPT_PROXY_SSL_VERIFYPEER',
+			'CURLOPT_SUPPRESS_CONNECT_HEADERS',
+			'CURLOPT_TCP_FASTOPEN',
+			'CURLOPT_TFTP_NO_OPTIONS',
+			'CURLOPT_TRANSFERTEXT',
+			'CURLOPT_UNRESTRICTED_AUTH',
+			'CURLOPT_UPLOAD',
+			'CURLOPT_VERBOSE',
+		];
+		foreach ($boolConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new BooleanType();
+			}
+		}
+
+		$intConstants = [
+			'CURLOPT_BUFFERSIZE',
+			'CURLOPT_CONNECTTIMEOUT',
+			'CURLOPT_CONNECTTIMEOUT_MS',
+			'CURLOPT_DNS_CACHE_TIMEOUT',
+			'CURLOPT_EXPECT_100_TIMEOUT_MS',
+			'CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS',
+			'CURLOPT_FTPSSLAUTH',
+			'CURLOPT_HEADEROPT',
+			'CURLOPT_HTTP_VERSION',
+			'CURLOPT_HTTPAUTH',
+			'CURLOPT_INFILESIZE',
+			'CURLOPT_LOW_SPEED_LIMIT',
+			'CURLOPT_LOW_SPEED_TIME',
+			'CURLOPT_MAXCONNECTS',
+			'CURLOPT_MAXREDIRS',
+			'CURLOPT_PORT',
+			'CURLOPT_POSTREDIR',
+			'CURLOPT_PROTOCOLS',
+			'CURLOPT_PROXYAUTH',
+			'CURLOPT_PROXYPORT',
+			'CURLOPT_PROXYTYPE',
+			'CURLOPT_REDIR_PROTOCOLS',
+			'CURLOPT_RESUME_FROM',
+			'CURLOPT_SOCKS5_AUTH',
+			'CURLOPT_SSL_OPTIONS',
+			'CURLOPT_SSL_VERIFYHOST',
+			'CURLOPT_SSLVERSION',
+			'CURLOPT_PROXY_SSL_OPTIONS',
+			'CURLOPT_PROXY_SSL_VERIFYHOST',
+			'CURLOPT_PROXY_SSLVERSION',
+			'CURLOPT_STREAM_WEIGHT',
+			'CURLOPT_TCP_KEEPALIVE',
+			'CURLOPT_TCP_KEEPIDLE',
+			'CURLOPT_TCP_KEEPINTVL',
+			'CURLOPT_TIMECONDITION',
+			'CURLOPT_TIMEOUT',
+			'CURLOPT_TIMEOUT_MS',
+			'CURLOPT_TIMEVALUE',
+			'CURLOPT_TIMEVALUE_LARGE',
+			'CURLOPT_MAX_RECV_SPEED_LARGE',
+			'CURLOPT_SSH_AUTH_TYPES',
+			'CURLOPT_IPRESOLVE',
+			'CURLOPT_FTP_FILEMETHOD',
+		];
+		foreach ($intConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new IntegerType();
+			}
+		}
+
+		$nullableStringConstants = [
+			'CURLOPT_CUSTOMREQUEST',
+			'CURLOPT_DNS_INTERFACE',
+			'CURLOPT_DNS_LOCAL_IP4',
+			'CURLOPT_DNS_LOCAL_IP6',
+			'CURLOPT_DOH_URL',
+			'CURLOPT_FTP_ACCOUNT',
+			'CURLOPT_FTPPORT',
+			'CURLOPT_HSTS',
+			'CURLOPT_KRBLEVEL',
+			'CURLOPT_RANGE',
+			'CURLOPT_RTSP_SESSION_ID',
+			'CURLOPT_UNIX_SOCKET_PATH',
+			'CURLOPT_XOAUTH2_BEARER',
+		];
+		foreach ($nullableStringConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new UnionType([
+					new NullType(),
+					TypeCombinator::intersect(
+						new StringType(),
+						new AccessoryNonEmptyStringType(),
+					),
+				]);
+			}
+		}
+
+		$nonEmptyStringConstants = [
+			'CURLOPT_ABSTRACT_UNIX_SOCKET',
+			'CURLOPT_ALTSVC',
+			'CURLOPT_AWS_SIGV4',
+			'CURLOPT_CAINFO',
+			'CURLOPT_CAPATH',
+			'CURLOPT_COOKIE',
+			'CURLOPT_COOKIEJAR',
+			'CURLOPT_COOKIELIST',
+			'CURLOPT_DEFAULT_PROTOCOL',
+			'CURLOPT_DNS_SERVERS',
+			'CURLOPT_EGDSOCKET',
+			'CURLOPT_FTP_ALTERNATIVE_TO_USER',
+			'CURLOPT_INTERFACE',
+			'CURLOPT_KEYPASSWD',
+			'CURLOPT_KRB4LEVEL',
+			'CURLOPT_LOGIN_OPTIONS',
+			'CURLOPT_MAIL_AUTH',
+			'CURLOPT_MAIL_FROM',
+			'CURLOPT_NOPROXY',
+			'CURLOPT_PASSWORD',
+			'CURLOPT_PINNEDPUBLICKEY',
+			'CURLOPT_PROTOCOLS_STR',
+			'CURLOPT_PROXY_CAINFO',
+			'CURLOPT_PROXY_CAPATH',
+			'CURLOPT_PROXY_CRLFILE',
+			'CURLOPT_PROXY_ISSUERCERT',
+			'CURLOPT_PROXY_KEYPASSWD',
+			'CURLOPT_PROXY_PINNEDPUBLICKEY',
+			'CURLOPT_PROXY_SERVICE_NAME',
+			'CURLOPT_PROXY_SSL_CIPHER_LIST',
+			'CURLOPT_PROXY_SSLCERT',
+			'CURLOPT_PROXY_SSLCERTTYPE',
+			'CURLOPT_PROXY_SSLKEY',
+			'CURLOPT_PROXY_SSLKEYTYPE',
+			'CURLOPT_PROXY_TLS13_CIPHERS',
+			'CURLOPT_PROXY_TLSAUTH_PASSWORD',
+			'CURLOPT_PROXY_TLSAUTH_TYPE',
+			'CURLOPT_PROXY_TLSAUTH_USERNAME',
+			'CURLOPT_PROXYPASSWORD',
+			'CURLOPT_PROXYUSERNAME',
+			'CURLOPT_PROXYUSERPWD',
+			'CURLOPT_RANDOM_FILE',
+			'CURLOPT_REDIR_PROTOCOLS_STR',
+			'CURLOPT_REFERER',
+			'CURLOPT_REQUEST_TARGET',
+			'CURLOPT_RTSP_STREAM_URI',
+			'CURLOPT_RTSP_TRANSPORT',
+			'CURLOPT_SASL_AUTHZID',
+			'CURLOPT_SERVICE_NAME',
+			'CURLOPT_SOCKS5_GSSAPI_SERVICE',
+			'CURLOPT_SSH_HOST_PUBLIC_KEY_MD5',
+			'CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256',
+			'CURLOPT_SSH_PRIVATE_KEYFILE',
+			'CURLOPT_SSH_PUBLIC_KEYFILE',
+			'CURLOPT_SSL_CIPHER_LIST',
+			'CURLOPT_SSL_EC_CURVES',
+			'CURLOPT_SSLCERT',
+			'CURLOPT_SSLCERTPASSWD',
+			'CURLOPT_SSLCERTTYPE',
+			'CURLOPT_SSLENGINE',
+			'CURLOPT_SSLENGINE_DEFAULT',
+			'CURLOPT_SSLKEY',
+			'CURLOPT_SSLKEYPASSWD',
+			'CURLOPT_SSLKEYTYPE',
+			'CURLOPT_TLS13_CIPHERS',
+			'CURLOPT_TLSAUTH_PASSWORD',
+			'CURLOPT_TLSAUTH_TYPE',
+			'CURLOPT_TLSAUTH_USERNAME',
+			'CURLOPT_TRANSFER_ENCODING',
+			'CURLOPT_URL',
+			'CURLOPT_USERAGENT',
+			'CURLOPT_USERNAME',
+			'CURLOPT_USERPWD',
+		];
+		foreach ($nonEmptyStringConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return TypeCombinator::intersect(
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+				);
+			}
+		}
+
+		$stringConstants = [
+			'CURLOPT_COOKIEFILE',
+			'CURLOPT_ENCODING', // Alias: CURLOPT_ACCEPT_ENCODING
+			'CURLOPT_PRE_PROXY',
+			'CURLOPT_PRIVATE',
+			'CURLOPT_PROXY',
+		];
+		foreach ($stringConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new StringType();
+			}
+		}
+
+		$intArrayStringKeysConstants = [
+			'CURLOPT_HTTPHEADER',
+		];
+		foreach ($intArrayStringKeysConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new ArrayType(new IntegerType(), new StringType());
+			}
+		}
+
+		$arrayConstants = [
+			'CURLOPT_CONNECT_TO',
+			'CURLOPT_HTTP200ALIASES',
+			'CURLOPT_POSTQUOTE',
+			'CURLOPT_PROXYHEADER',
+			'CURLOPT_QUOTE',
+			'CURLOPT_RESOLVE',
+		];
+		foreach ($arrayConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new ArrayType(new MixedType(), new MixedType());
+			}
+		}
+
+		$arrayOrStringConstants = [
+			'CURLOPT_POSTFIELDS',
+		];
+		foreach ($arrayOrStringConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new UnionType([
+					new StringType(),
+					new ArrayType(new MixedType(), new MixedType()),
+				]);
+			}
+		}
+
+		$resourceConstants = [
+			'CURLOPT_FILE',
+			'CURLOPT_INFILE',
+			'CURLOPT_STDERR',
+			'CURLOPT_WRITEHEADER',
+		];
+		foreach ($resourceConstants as $constName) {
+			if (defined($constName) && constant($constName) === $curlOpt) {
+				return new ResourceType();
+			}
+		}
+
+		// unknown constant
+		return null;
+	}
+
+}
diff --git a/src/Reflection/PassedByReference.php b/src/Reflection/PassedByReference.php
new file mode 100644
index 00000000..919ad944
--- /dev/null
+++ b/src/Reflection/PassedByReference.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use function array_key_exists;
+
+/**
+ * @api
+ */
+final class PassedByReference
+{
+
+	private const NO = 1;
+	private const READS_ARGUMENT = 2;
+	private const CREATES_NEW_VARIABLE = 3;
+
+	/** @var self[] */
+	private static array $registry = [];
+
+	private function __construct(private int $value)
+	{
+	}
+
+	private static function create(int $value): self
+	{
+		if (!array_key_exists($value, self::$registry)) {
+			self::$registry[$value] = new self($value);
+		}
+
+		return self::$registry[$value];
+	}
+
+	public static function createNo(): self
+	{
+		return self::create(self::NO);
+	}
+
+	public static function createCreatesNewVariable(): self
+	{
+		return self::create(self::CREATES_NEW_VARIABLE);
+	}
+
+	public static function createReadsArgument(): self
+	{
+		return self::create(self::READS_ARGUMENT);
+	}
+
+	public function no(): bool
+	{
+		return $this->value === self::NO;
+	}
+
+	public function yes(): bool
+	{
+		return !$this->no();
+	}
+
+	public function equals(self $other): bool
+	{
+		return $this->value === $other->value;
+	}
+
+	public function createsNewVariable(): bool
+	{
+		return $this->value === self::CREATES_NEW_VARIABLE;
+	}
+
+	public function combine(self $other): self
+	{
+		if ($this->value > $other->value) {
+			return $this;
+		} elseif ($this->value < $other->value) {
+			return $other;
+		}
+
+		return $this;
+	}
+
+}
diff --git a/src/Reflection/Php/ClosureCallMethodReflection.php b/src/Reflection/Php/ClosureCallMethodReflection.php
new file mode 100644
index 00000000..ac4dbc9c
--- /dev/null
+++ b/src/Reflection/Php/ClosureCallMethodReflection.php
@@ -0,0 +1,196 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use function array_map;
+use function array_unshift;
+use function is_bool;
+
+final class ClosureCallMethodReflection implements ExtendedMethodReflection
+{
+
+	public function __construct(
+		private ExtendedMethodReflection $nativeMethodReflection,
+		private ClosureType $closureType,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->nativeMethodReflection->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->nativeMethodReflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->nativeMethodReflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->nativeMethodReflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->nativeMethodReflection->getDocComment();
+	}
+
+	public function getName(): string
+	{
+		return $this->nativeMethodReflection->getName();
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this->nativeMethodReflection->getPrototype();
+	}
+
+	public function getVariants(): array
+	{
+		$parameters = $this->closureType->getParameters();
+		$newThis = new NativeParameterReflection(
+			'newThis',
+			false,
+			new ObjectWithoutClassType(),
+			PassedByReference::createNo(),
+			false,
+			null,
+		);
+
+		array_unshift($parameters, $newThis);
+
+		return [
+			new ExtendedFunctionVariant(
+				$this->closureType->getTemplateTypeMap(),
+				$this->closureType->getResolvedTemplateTypeMap(),
+				array_map(static fn (ParameterReflection $parameter): ExtendedParameterReflection => new ExtendedDummyParameter(
+					$parameter->getName(),
+					$parameter->getType(),
+					$parameter->isOptional(),
+					$parameter->passedByReference(),
+					$parameter->isVariadic(),
+					$parameter->getDefaultValue(),
+					new MixedType(),
+					$parameter->getType(),
+					null,
+					TrinaryLogic::createMaybe(),
+					null,
+					[],
+				), $parameters),
+				$this->closureType->isVariadic(),
+				$this->closureType->getReturnType(),
+				$this->closureType->getReturnType(),
+				new MixedType(),
+				$this->closureType->getCallSiteVarianceMap(),
+			),
+		];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->nativeMethodReflection->getDeprecatedDescription();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->isFinal();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->isFinalByKeyword();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->isInternal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->nativeMethodReflection->getThrowType();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->hasSideEffects();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->nativeMethodReflection->getAsserts();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->acceptsNamedArguments();
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return $this->nativeMethodReflection->getSelfOutType();
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->returnsByReference();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		$abstract = $this->nativeMethodReflection->isAbstract();
+		if (is_bool($abstract)) {
+			return TrinaryLogic::createFromBoolean($abstract);
+		}
+
+		return $abstract;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->nativeMethodReflection->isPure();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->nativeMethodReflection->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Php/ClosureCallUnresolvedMethodPrototypeReflection.php b/src/Reflection/Php/ClosureCallUnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..753a6821
--- /dev/null
+++ b/src/Reflection/Php/ClosureCallUnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\Type;
+
+final class ClosureCallUnresolvedMethodPrototypeReflection implements UnresolvedMethodPrototypeReflection
+{
+
+	public function __construct(private UnresolvedMethodPrototypeReflection $prototype, private ClosureType $closure)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedMethodPrototypeReflection
+	{
+		return new self($this->prototype->doNotResolveTemplateTypeMapToBounds(), $this->closure);
+	}
+
+	public function getNakedMethod(): ExtendedMethodReflection
+	{
+		return $this->getTransformedMethod();
+	}
+
+	public function getTransformedMethod(): ExtendedMethodReflection
+	{
+		return new ClosureCallMethodReflection($this->prototype->getTransformedMethod(), $this->closure);
+	}
+
+	public function withCalledOnType(Type $type): UnresolvedMethodPrototypeReflection
+	{
+		return new self($this->prototype->withCalledOnType($type), $this->closure);
+	}
+
+}
diff --git a/src/Reflection/Php/DummyParameter.php b/src/Reflection/Php/DummyParameter.php
new file mode 100644
index 00000000..a1e9cebf
--- /dev/null
+++ b/src/Reflection/Php/DummyParameter.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Type\Type;
+
+class DummyParameter implements ParameterReflection
+{
+
+	private PassedByReference $passedByReference;
+
+	public function __construct(private string $name, private Type $type, private bool $optional, ?PassedByReference $passedByReference, private bool $variadic, private ?Type $defaultValue)
+	{
+		$this->passedByReference = $passedByReference ?? PassedByReference::createNo();
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->optional;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+}
diff --git a/src/Reflection/Php/EnumAllowedSubTypesClassReflectionExtension.php b/src/Reflection/Php/EnumAllowedSubTypesClassReflectionExtension.php
new file mode 100644
index 00000000..4f1bcb4c
--- /dev/null
+++ b/src/Reflection/Php/EnumAllowedSubTypesClassReflectionExtension.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\AllowedSubTypesClassReflectionExtension;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use function array_keys;
+
+final class EnumAllowedSubTypesClassReflectionExtension implements AllowedSubTypesClassReflectionExtension
+{
+
+	public function supports(ClassReflection $classReflection): bool
+	{
+		return $classReflection->isEnum();
+	}
+
+	public function getAllowedSubTypes(ClassReflection $classReflection): array
+	{
+		$cases = [];
+		foreach (array_keys($classReflection->getEnumCases()) as $name) {
+			$cases[] = new EnumCaseObjectType($classReflection->getName(), $name);
+		}
+
+		return $cases;
+	}
+
+}
diff --git a/src/Reflection/Php/EnumCasesMethodReflection.php b/src/Reflection/Php/EnumCasesMethodReflection.php
new file mode 100644
index 00000000..5004d9fb
--- /dev/null
+++ b/src/Reflection/Php/EnumCasesMethodReflection.php
@@ -0,0 +1,160 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class EnumCasesMethodReflection implements ExtendedMethodReflection
+{
+
+	public function __construct(private ClassReflection $declaringClass, private Type $returnType)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return true;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getName(): string
+	{
+		return 'cases';
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		$unitEnum = $this->declaringClass->getAncestorWithClassName('UnitEnum');
+		if ($unitEnum === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $unitEnum->getNativeMethod('cases');
+	}
+
+	public function getVariants(): array
+	{
+		return [
+			new ExtendedFunctionVariant(
+				TemplateTypeMap::createEmpty(),
+				TemplateTypeMap::createEmpty(),
+				[],
+				false,
+				$this->returnType,
+				new MixedType(),
+				$this->returnType,
+			),
+		];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return null;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->declaringClass->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Php/EnumPropertyReflection.php b/src/Reflection/Php/EnumPropertyReflection.php
new file mode 100644
index 00000000..f55fc14c
--- /dev/null
+++ b/src/Reflection/Php/EnumPropertyReflection.php
@@ -0,0 +1,146 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class EnumPropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function __construct(private ClassReflection $declaringClass, private Type $type)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->type;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return true;
+	}
+
+	public function isReadable(): bool
+	{
+		return true;
+	}
+
+	public function isWritable(): bool
+	{
+		return false;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Php/EnumUnresolvedPropertyPrototypeReflection.php b/src/Reflection/Php/EnumUnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..4458ef00
--- /dev/null
+++ b/src/Reflection/Php/EnumUnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\Type\Type;
+
+final class EnumUnresolvedPropertyPrototypeReflection implements UnresolvedPropertyPrototypeReflection
+{
+
+	public function __construct(private EnumPropertyReflection $property)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedPropertyPrototypeReflection
+	{
+		return $this;
+	}
+
+	public function getNakedProperty(): ExtendedPropertyReflection
+	{
+		return $this->property;
+	}
+
+	public function getTransformedProperty(): ExtendedPropertyReflection
+	{
+		return $this->property;
+	}
+
+	public function withFechedOnType(Type $type): UnresolvedPropertyPrototypeReflection
+	{
+		return $this;
+	}
+
+}
diff --git a/src/Reflection/Php/ExitFunctionReflection.php b/src/Reflection/Php/ExitFunctionReflection.php
new file mode 100644
index 00000000..33d1b368
--- /dev/null
+++ b/src/Reflection/Php/ExitFunctionReflection.php
@@ -0,0 +1,147 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+
+final class ExitFunctionReflection implements FunctionReflection
+{
+
+	public function __construct(private string $name)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getFileName(): ?string
+	{
+		return null;
+	}
+
+	public function getVariants(): array
+	{
+		$parameterType = new UnionType([
+			new StringType(),
+			new IntegerType(),
+		]);
+		return [
+			new ExtendedFunctionVariant(
+				TemplateTypeMap::createEmpty(),
+				TemplateTypeMap::createEmpty(),
+				[
+					new ExtendedDummyParameter(
+						'status',
+						$parameterType,
+						true,
+						PassedByReference::createNo(),
+						false,
+						new ConstantIntegerType(0),
+						$parameterType,
+						new MixedType(),
+						null,
+						TrinaryLogic::createNo(),
+						null,
+						[],
+					),
+				],
+				false,
+				new NeverType(true),
+				new MixedType(),
+				new NeverType(true),
+				TemplateTypeVarianceMap::createEmpty(),
+			),
+		];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>
+	 */
+	public function getNamedArgumentsVariants(): array
+	{
+		return $this->getVariants();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return null;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isBuiltin(): bool
+	{
+		return true;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Php/ExtendedDummyParameter.php b/src/Reflection/Php/ExtendedDummyParameter.php
new file mode 100644
index 00000000..ff3a4f91
--- /dev/null
+++ b/src/Reflection/Php/ExtendedDummyParameter.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class ExtendedDummyParameter extends DummyParameter implements ExtendedParameterReflection
+{
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		string $name,
+		Type $type,
+		bool $optional,
+		?PassedByReference $passedByReference,
+		bool $variadic,
+		?Type $defaultValue,
+		private Type $nativeType,
+		private Type $phpDocType,
+		private ?Type $outType,
+		private TrinaryLogic $immediatelyInvokedCallable,
+		private ?Type $closureThisType,
+		private array $attributes,
+	)
+	{
+		parent::__construct($name, $type, $optional, $passedByReference, $variadic, $defaultValue);
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->phpDocType;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return !$this->nativeType instanceof MixedType || $this->nativeType->isExplicitMixed();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->nativeType;
+	}
+
+	public function getOutType(): ?Type
+	{
+		return $this->outType;
+	}
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic
+	{
+		return $this->immediatelyInvokedCallable;
+	}
+
+	public function getClosureThisType(): ?Type
+	{
+		return $this->closureThisType;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpClassReflectionExtension.php b/src/Reflection/Php/PhpClassReflectionExtension.php
new file mode 100644
index 00000000..01f5131d
--- /dev/null
+++ b/src/Reflection/Php/PhpClassReflectionExtension.php
@@ -0,0 +1,1225 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Declare_;
+use PhpParser\Node\Stmt\Namespace_;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Analyser\ScopeContext;
+use PHPStan\Analyser\ScopeFactory;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionProperty;
+use PHPStan\Parser\Parser;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\Reflection\Annotations\AnnotationsMethodsClassReflectionExtension;
+use PHPStan\Reflection\Annotations\AnnotationsPropertiesClassReflectionExtension;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\MethodsClassReflectionExtension;
+use PHPStan\Reflection\Native\ExtendedNativeParameterReflection;
+use PHPStan\Reflection\Native\NativeMethodReflection;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\SignatureMap\FunctionSignature;
+use PHPStan\Reflection\SignatureMap\ParameterSignature;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypehintHelper;
+use function array_key_exists;
+use function array_keys;
+use function array_map;
+use function array_slice;
+use function count;
+use function explode;
+use function implode;
+use function is_array;
+use function sprintf;
+use function strtolower;
+
+final class PhpClassReflectionExtension
+	implements PropertiesClassReflectionExtension, MethodsClassReflectionExtension
+{
+
+	/** @var ExtendedPropertyReflection[][] */
+	private array $propertiesIncludingAnnotations = [];
+
+	/** @var PhpPropertyReflection[][] */
+	private array $nativeProperties = [];
+
+	/** @var ExtendedMethodReflection[][] */
+	private array $methodsIncludingAnnotations = [];
+
+	/** @var ExtendedMethodReflection[][] */
+	private array $nativeMethods = [];
+
+	/** @var array<string, array<string, Type>> */
+	private array $propertyTypesCache = [];
+
+	/** @var array<string, true> */
+	private array $inferClassConstructorPropertyTypesInProcess = [];
+
+	public function __construct(
+		private ScopeFactory $scopeFactory,
+		private NodeScopeResolver $nodeScopeResolver,
+		private PhpMethodReflectionFactory $methodReflectionFactory,
+		private PhpDocInheritanceResolver $phpDocInheritanceResolver,
+		private AnnotationsMethodsClassReflectionExtension $annotationsMethodsClassReflectionExtension,
+		private AnnotationsPropertiesClassReflectionExtension $annotationsPropertiesClassReflectionExtension,
+		private SignatureMapProvider $signatureMapProvider,
+		private Parser $parser,
+		private StubPhpDocProvider $stubPhpDocProvider,
+		private ReflectionProvider\ReflectionProviderProvider $reflectionProviderProvider,
+		private FileTypeMapper $fileTypeMapper,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private bool $inferPrivatePropertyTypeFromConstructor,
+	)
+	{
+	}
+
+	public function evictPrivateSymbols(string $classCacheKey): void
+	{
+		foreach ($this->propertiesIncludingAnnotations as $key => $properties) {
+			if ($key !== $classCacheKey) {
+				continue;
+			}
+			foreach ($properties as $name => $property) {
+				if (!$property->isPrivate()) {
+					continue;
+				}
+				unset($this->propertiesIncludingAnnotations[$key][$name]);
+			}
+		}
+		foreach ($this->nativeProperties as $key => $properties) {
+			if ($key !== $classCacheKey) {
+				continue;
+			}
+			foreach ($properties as $name => $property) {
+				if (!$property->isPrivate()) {
+					continue;
+				}
+				unset($this->nativeProperties[$key][$name]);
+			}
+		}
+		foreach ($this->methodsIncludingAnnotations as $key => $methods) {
+			if ($key !== $classCacheKey) {
+				continue;
+			}
+			foreach ($methods as $name => $method) {
+				if (!$method->isPrivate()) {
+					continue;
+				}
+				unset($this->methodsIncludingAnnotations[$key][$name]);
+			}
+		}
+		foreach ($this->nativeMethods as $key => $methods) {
+			if ($key !== $classCacheKey) {
+				continue;
+			}
+			foreach ($methods as $name => $method) {
+				if (!$method->isPrivate()) {
+					continue;
+				}
+				unset($this->nativeMethods[$key][$name]);
+			}
+		}
+	}
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		return $classReflection->getNativeReflection()->hasProperty($propertyName);
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): ExtendedPropertyReflection
+	{
+		if (!isset($this->propertiesIncludingAnnotations[$classReflection->getCacheKey()][$propertyName])) {
+			$this->propertiesIncludingAnnotations[$classReflection->getCacheKey()][$propertyName] = $this->createProperty($classReflection, $propertyName, true);
+		}
+
+		return $this->propertiesIncludingAnnotations[$classReflection->getCacheKey()][$propertyName];
+	}
+
+	public function getNativeProperty(ClassReflection $classReflection, string $propertyName): PhpPropertyReflection
+	{
+		if (!isset($this->nativeProperties[$classReflection->getCacheKey()][$propertyName])) {
+			/** @var PhpPropertyReflection $property */
+			$property = $this->createProperty($classReflection, $propertyName, false);
+			$this->nativeProperties[$classReflection->getCacheKey()][$propertyName] = $property;
+		}
+
+		return $this->nativeProperties[$classReflection->getCacheKey()][$propertyName];
+	}
+
+	private function createProperty(
+		ClassReflection $classReflection,
+		string $propertyName,
+		bool $includingAnnotations,
+	): ExtendedPropertyReflection
+	{
+		$propertyReflection = $classReflection->getNativeReflection()->getProperty($propertyName);
+		$propertyName = $propertyReflection->getName();
+		$declaringClassName = $propertyReflection->getDeclaringClass()->getName();
+		$declaringClassReflection = $classReflection->getAncestorWithClassName($declaringClassName);
+		if ($declaringClassReflection === null) {
+			throw new ShouldNotHappenException(sprintf(
+				'Internal error: Expected to find an ancestor with class name %s on %s, but none was found.',
+				$declaringClassName,
+				$classReflection->getName(),
+			));
+		}
+
+		if ($declaringClassReflection->isEnum()) {
+			if (
+				$propertyName === 'name'
+				|| ($declaringClassReflection->isBackedEnum() && $propertyName === 'value')
+			) {
+				$types = [];
+				foreach (array_keys($classReflection->getEnumCases()) as $name) {
+					if ($propertyName === 'name') {
+						$types[] = new ConstantStringType($name);
+						continue;
+					}
+
+					$case = $classReflection->getEnumCase($name);
+					$value = $case->getBackingValueType();
+					if ($value === null) {
+						throw new ShouldNotHappenException();
+					}
+
+					$types[] = $value;
+				}
+
+				return new PhpPropertyReflection($declaringClassReflection, null, null, TypeCombinator::union(...$types), $classReflection->getNativeReflection()->getProperty($propertyName), null, null, null, false, false, false, false, []);
+			}
+		}
+
+		$deprecatedDescription = null;
+		$isDeprecated = false;
+		$isInternal = false;
+		$isReadOnlyByPhpDoc = $classReflection->isImmutable();
+		$isAllowedPrivateMutation = false;
+
+		if (
+			$includingAnnotations
+			&& !$declaringClassReflection->isEnum()
+			&& $this->annotationsPropertiesClassReflectionExtension->hasProperty($classReflection, $propertyName)
+		) {
+			$hierarchyDistances = $classReflection->getClassHierarchyDistances();
+			$annotationProperty = $this->annotationsPropertiesClassReflectionExtension->getProperty($classReflection, $propertyName);
+			if (!isset($hierarchyDistances[$annotationProperty->getDeclaringClass()->getName()])) {
+				throw new ShouldNotHappenException();
+			}
+
+			$distanceDeclaringClass = $propertyReflection->getDeclaringClass()->getName();
+			$propertyTrait = $this->findPropertyTrait($propertyReflection);
+			if ($propertyTrait !== null) {
+				$distanceDeclaringClass = $propertyTrait;
+			}
+			if (!isset($hierarchyDistances[$distanceDeclaringClass])) {
+				throw new ShouldNotHappenException();
+			}
+
+			if ($hierarchyDistances[$annotationProperty->getDeclaringClass()->getName()] <= $hierarchyDistances[$distanceDeclaringClass]) {
+				return $annotationProperty;
+			}
+		}
+
+		$docComment = $propertyReflection->getDocComment() !== false
+			? $propertyReflection->getDocComment()
+			: null;
+
+		$phpDocType = null;
+		$resolvedPhpDoc = null;
+		$declaringTraitName = $this->findPropertyTrait($propertyReflection);
+		$constructorName = null;
+		if ($propertyReflection->isPromoted()) {
+			if ($declaringClassReflection->hasConstructor()) {
+				$constructorName = $declaringClassReflection->getConstructor()->getName();
+			}
+		}
+
+		if ($constructorName === null) {
+			$resolvedPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForProperty(
+				$docComment,
+				$declaringClassReflection,
+				$declaringClassReflection->getFileName(),
+				$declaringTraitName,
+				$propertyName,
+			);
+		} elseif ($docComment !== null) {
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$declaringClassReflection->getFileName(),
+				$declaringClassName,
+				$declaringTraitName,
+				$constructorName,
+				$docComment,
+			);
+		}
+		$phpDocBlockClassReflection = $declaringClassReflection;
+
+		if ($resolvedPhpDoc !== null) {
+			$varTags = $resolvedPhpDoc->getVarTags();
+			if (isset($varTags[0]) && count($varTags) === 1) {
+				$phpDocType = $varTags[0]->getType();
+			} elseif (isset($varTags[$propertyName])) {
+				$phpDocType = $varTags[$propertyName]->getType();
+			}
+
+			$phpDocType = $phpDocType !== null ? TemplateTypeHelper::resolveTemplateTypes(
+				$phpDocType,
+				$phpDocBlockClassReflection->getActiveTemplateTypeMap(),
+				$phpDocBlockClassReflection->getCallSiteVarianceMap(),
+				TemplateTypeVariance::createInvariant(),
+			) : null;
+			$deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag() !== null ? $resolvedPhpDoc->getDeprecatedTag()->getMessage() : null;
+			$isDeprecated = $resolvedPhpDoc->isDeprecated();
+			$isInternal = $resolvedPhpDoc->isInternal();
+			$isReadOnlyByPhpDoc = $isReadOnlyByPhpDoc || $resolvedPhpDoc->isReadOnly();
+			$isAllowedPrivateMutation = $resolvedPhpDoc->isAllowedPrivateMutation();
+		}
+
+		if ($phpDocType === null) {
+			if (isset($constructorName)) {
+				$constructorDocComment = $declaringClassReflection->getConstructor()->getDocComment();
+				$nativeClassReflection = $declaringClassReflection->getNativeReflection();
+				$positionalParameterNames = [];
+				if ($nativeClassReflection->getConstructor() !== null) {
+					$positionalParameterNames = array_map(static fn (ReflectionParameter $parameter): string => $parameter->getName(), $nativeClassReflection->getConstructor()->getParameters());
+				}
+				$resolvedConstructorPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForMethod(
+					$constructorDocComment,
+					$declaringClassReflection->getFileName(),
+					$declaringClassReflection,
+					$declaringTraitName,
+					$constructorName,
+					$positionalParameterNames,
+				);
+				$paramTags = $resolvedConstructorPhpDoc->getParamTags();
+				if (isset($paramTags[$propertyReflection->getName()])) {
+					$phpDocType = $paramTags[$propertyReflection->getName()]->getType();
+				}
+			}
+		}
+
+		if (
+			$phpDocType === null
+			&& $this->inferPrivatePropertyTypeFromConstructor
+			&& $declaringClassReflection->getFileName() !== null
+			&& $propertyReflection->isPrivate()
+			&& !$propertyReflection->isPromoted()
+			&& !$propertyReflection->hasType()
+			&& $declaringClassReflection->hasConstructor()
+			&& $declaringClassReflection->getConstructor()->getDeclaringClass()->getName() === $declaringClassReflection->getName()
+		) {
+			$phpDocType = $this->inferPrivatePropertyType(
+				$propertyReflection->getName(),
+				$declaringClassReflection->getConstructor(),
+			);
+		}
+
+		$nativeType = null;
+		if ($propertyReflection->getType() !== null) {
+			$nativeType = $propertyReflection->getType();
+		}
+
+		$declaringTrait = null;
+		$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+		if (
+			$declaringTraitName !== null && $reflectionProvider->hasClass($declaringTraitName)
+		) {
+			$declaringTrait = $reflectionProvider->getClass($declaringTraitName);
+		}
+
+		$getHook = null;
+		$setHook = null;
+
+		$betterReflection = $propertyReflection->getBetterReflection();
+		if ($betterReflection->hasHook('get')) {
+			$betterReflectionGetHook = $betterReflection->getHook('get');
+			if ($betterReflectionGetHook === null) {
+				throw new ShouldNotHappenException();
+			}
+			$getHook = $this->createUserlandMethodReflection(
+				$declaringClassReflection,
+				$declaringClassReflection,
+				new ReflectionMethod($betterReflectionGetHook),
+				$declaringTraitName,
+			);
+
+			if ($phpDocType !== null) {
+				$getHookMethodReflectionVariant = $getHook->getOnlyVariant();
+				$getHookMethodReflectionVariantPhpDocReturnType = $getHookMethodReflectionVariant->getPhpDocReturnType();
+				if (
+					$getHookMethodReflectionVariantPhpDocReturnType instanceof MixedType
+					&& !$getHookMethodReflectionVariantPhpDocReturnType instanceof TemplateMixedType
+					&& !$getHookMethodReflectionVariantPhpDocReturnType->isExplicitMixed()
+				) {
+					$getHook = $getHook->changePropertyGetHookPhpDocType($phpDocType);
+				}
+			}
+		}
+
+		if ($betterReflection->hasHook('set')) {
+			$betterReflectionSetHook = $betterReflection->getHook('set');
+			if ($betterReflectionSetHook === null) {
+				throw new ShouldNotHappenException();
+			}
+			$setHook = $this->createUserlandMethodReflection(
+				$declaringClassReflection,
+				$declaringClassReflection,
+				new ReflectionMethod($betterReflectionSetHook),
+				$declaringTraitName,
+			);
+
+			if ($phpDocType !== null) {
+				$setHookMethodReflectionVariant = $setHook->getOnlyVariant();
+				$setHookMethodReflectionParameters = $setHookMethodReflectionVariant->getParameters();
+				if (isset($setHookMethodReflectionParameters[0])) {
+					$setHookMethodReflectionParameter = $setHookMethodReflectionParameters[0];
+					$setHookMethodReflectionParameterPhpDocType = $setHookMethodReflectionParameter->getPhpDocType();
+					if (
+						$setHookMethodReflectionParameterPhpDocType instanceof MixedType
+						&& !$setHookMethodReflectionParameterPhpDocType instanceof TemplateMixedType
+						&& !$setHookMethodReflectionParameterPhpDocType->isExplicitMixed()
+					) {
+						$setHook = $setHook->changePropertySetHookPhpDocType($setHookMethodReflectionParameter->getName(), $phpDocType);
+					}
+				}
+			}
+		}
+
+		return new PhpPropertyReflection(
+			$declaringClassReflection,
+			$declaringTrait,
+			$nativeType,
+			$phpDocType,
+			$propertyReflection,
+			$getHook,
+			$setHook,
+			$deprecatedDescription,
+			$isDeprecated,
+			$isInternal,
+			$isReadOnlyByPhpDoc,
+			$isAllowedPrivateMutation,
+			$this->attributeReflectionFactory->fromNativeReflection($propertyReflection->getAttributes(), InitializerExprContext::fromClass($declaringClassReflection->getName(), $declaringClassReflection->getFileName())),
+		);
+	}
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		return $classReflection->getNativeReflection()->hasMethod($methodName);
+	}
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): ExtendedMethodReflection
+	{
+		if (isset($this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$methodName])) {
+			return $this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$methodName];
+		}
+
+		$nativeMethodReflection = $classReflection->getNativeReflection()->getMethod($methodName);
+		if (!isset($this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$nativeMethodReflection->getName()])) {
+			$method = $this->createMethod($classReflection, $nativeMethodReflection, true);
+			$this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$nativeMethodReflection->getName()] = $method;
+			if ($nativeMethodReflection->getName() !== $methodName) {
+				$this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$methodName] = $method;
+			}
+		}
+
+		return $this->methodsIncludingAnnotations[$classReflection->getCacheKey()][$nativeMethodReflection->getName()];
+	}
+
+	public function hasNativeMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		return $this->hasMethod($classReflection, $methodName);
+	}
+
+	public function getNativeMethod(ClassReflection $classReflection, string $methodName): ExtendedMethodReflection
+	{
+		if (isset($this->nativeMethods[$classReflection->getCacheKey()][$methodName])) {
+			return $this->nativeMethods[$classReflection->getCacheKey()][$methodName];
+		}
+
+		if (!$classReflection->getNativeReflection()->hasMethod($methodName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nativeMethodReflection = $classReflection->getNativeReflection()->getMethod($methodName);
+
+		if (!isset($this->nativeMethods[$classReflection->getCacheKey()][$nativeMethodReflection->getName()])) {
+			$method = $this->createMethod($classReflection, $nativeMethodReflection, false);
+			$this->nativeMethods[$classReflection->getCacheKey()][$nativeMethodReflection->getName()] = $method;
+		}
+
+		return $this->nativeMethods[$classReflection->getCacheKey()][$nativeMethodReflection->getName()];
+	}
+
+	private function createMethod(
+		ClassReflection $classReflection,
+		ReflectionMethod $methodReflection,
+		bool $includingAnnotations,
+	): ExtendedMethodReflection
+	{
+		if ($includingAnnotations && $this->annotationsMethodsClassReflectionExtension->hasMethod($classReflection, $methodReflection->getName())) {
+			$hierarchyDistances = $classReflection->getClassHierarchyDistances();
+			$annotationMethod = $this->annotationsMethodsClassReflectionExtension->getMethod($classReflection, $methodReflection->getName());
+			if (!isset($hierarchyDistances[$annotationMethod->getDeclaringClass()->getName()])) {
+				throw new ShouldNotHappenException();
+			}
+
+			$distanceDeclaringClass = $methodReflection->getDeclaringClass()->getName();
+			$methodTrait = $this->findMethodTrait($methodReflection);
+			if ($methodTrait !== null) {
+				$distanceDeclaringClass = $methodTrait;
+			}
+			if (!isset($hierarchyDistances[$distanceDeclaringClass])) {
+				throw new ShouldNotHappenException();
+			}
+
+			if ($hierarchyDistances[$annotationMethod->getDeclaringClass()->getName()] <= $hierarchyDistances[$distanceDeclaringClass]) {
+				return $annotationMethod;
+			}
+		}
+		$declaringClassName = $methodReflection->getDeclaringClass()->getName();
+		$declaringClass = $classReflection->getAncestorWithClassName($declaringClassName);
+
+		if ($declaringClass === null) {
+			throw new ShouldNotHappenException(sprintf(
+				'Internal error: Expected to find an ancestor with class name %s on %s, but none was found.',
+				$declaringClassName,
+				$classReflection->getName(),
+			));
+		}
+
+		if (
+			$declaringClass->isEnum()
+			&& $declaringClass->getName() !== 'UnitEnum'
+			&& strtolower($methodReflection->getName()) === 'cases'
+		) {
+			$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+			foreach (array_keys($classReflection->getEnumCases()) as $name) {
+				$arrayBuilder->setOffsetValueType(null, new EnumCaseObjectType($classReflection->getName(), $name));
+			}
+
+			return new EnumCasesMethodReflection($declaringClass, $arrayBuilder->getArray());
+		}
+
+		if ($this->signatureMapProvider->hasMethodSignature($declaringClassName, $methodReflection->getName())) {
+			$variantsByType = ['positional' => []];
+			$throwType = null;
+			$asserts = Assertions::createEmpty();
+			$acceptsNamedArguments = true;
+			$selfOutType = null;
+			$phpDocComment = null;
+			$methodSignaturesResult = $this->signatureMapProvider->getMethodSignatures($declaringClassName, $methodReflection->getName(), $methodReflection);
+			foreach ($methodSignaturesResult as $signatureType => $methodSignatures) {
+				if ($methodSignatures === null) {
+					continue;
+				}
+
+				foreach ($methodSignatures as $methodSignature) {
+					$phpDocParameterNameMapping = [];
+					foreach ($methodSignature->getParameters() as $parameter) {
+						$phpDocParameterNameMapping[$parameter->getName()] = $parameter->getName();
+					}
+					$stubPhpDocReturnType = null;
+					$stubPhpDocParameterTypes = [];
+					$stubPhpDocParameterVariadicity = [];
+					$phpDocParameterTypes = [];
+					$phpDocReturnType = null;
+					$stubPhpDocPair = null;
+					$stubPhpParameterOutTypes = [];
+					$phpDocParameterOutTypes = [];
+					$immediatelyInvokedCallableParameters = [];
+					$closureThisParameters = [];
+					$stubImmediatelyInvokedCallableParameters = [];
+					$stubClosureThisParameters = [];
+					if (count($methodSignatures) === 1) {
+						$stubPhpDocPair = $this->findMethodPhpDocIncludingAncestors($declaringClass, $declaringClass, $methodReflection->getName(), array_map(static fn (ParameterSignature $parameterSignature): string => $parameterSignature->getName(), $methodSignature->getParameters()));
+						if ($stubPhpDocPair !== null) {
+							[$stubPhpDoc, $stubDeclaringClass] = $stubPhpDocPair;
+							$templateTypeMap = $stubDeclaringClass->getActiveTemplateTypeMap();
+							$callSiteVarianceMap = $stubDeclaringClass->getCallSiteVarianceMap();
+							$returnTag = $stubPhpDoc->getReturnTag();
+							$stubImmediatelyInvokedCallableParameters = array_map(static fn (bool $immediate) => TrinaryLogic::createFromBoolean($immediate), $stubPhpDoc->getParamsImmediatelyInvokedCallable());
+							if ($returnTag !== null) {
+								$stubPhpDocReturnType = TemplateTypeHelper::resolveTemplateTypes(
+									$returnTag->getType(),
+									$templateTypeMap,
+									$callSiteVarianceMap,
+									TemplateTypeVariance::createCovariant(),
+								);
+							}
+
+							$stubClosureThisParameters = array_map(static fn ($tag) => $tag->getType(), $stubPhpDoc->getParamClosureThisTags());
+							foreach ($stubPhpDoc->getParamTags() as $name => $paramTag) {
+								$stubPhpDocParameterTypes[$name] = TemplateTypeHelper::resolveTemplateTypes(
+									$paramTag->getType(),
+									$templateTypeMap,
+									$callSiteVarianceMap,
+									TemplateTypeVariance::createContravariant(),
+								);
+								$stubPhpDocParameterVariadicity[$name] = $paramTag->isVariadic();
+							}
+
+							$throwsTag = $stubPhpDoc->getThrowsTag();
+							if ($throwsTag !== null) {
+								$throwType = $throwsTag->getType();
+							}
+
+							$asserts = Assertions::createFromResolvedPhpDocBlock($stubPhpDoc);
+							$acceptsNamedArguments = $stubPhpDoc->acceptsNamedArguments();
+
+							$selfOutTypeTag = $stubPhpDoc->getSelfOutTag();
+							if ($selfOutTypeTag !== null) {
+								$selfOutType = $selfOutTypeTag->getType();
+							}
+
+							foreach ($stubPhpDoc->getParamOutTags() as $name => $paramOutTag) {
+								$stubPhpParameterOutTypes[$name] = TemplateTypeHelper::resolveTemplateTypes(
+									$paramOutTag->getType(),
+									$templateTypeMap,
+									$callSiteVarianceMap,
+									TemplateTypeVariance::createCovariant(),
+								);
+							}
+
+							if ($declaringClassName === $stubDeclaringClass->getName() && $stubPhpDoc->hasPhpDocString()) {
+								$phpDocComment = $stubPhpDoc->getPhpDocString();
+							}
+						}
+					}
+					if ($stubPhpDocPair === null && $methodReflection->getDocComment() !== false) {
+						$filename = $methodReflection->getFileName();
+						if ($filename !== false) {
+							$phpDocBlock = $this->fileTypeMapper->getResolvedPhpDoc(
+								$filename,
+								$declaringClassName,
+								null,
+								$methodReflection->getName(),
+								$methodReflection->getDocComment(),
+							);
+							$throwsTag = $phpDocBlock->getThrowsTag();
+							if ($throwsTag !== null) {
+								$throwType = $throwsTag->getType();
+							}
+							$returnTag = $phpDocBlock->getReturnTag();
+							if ($returnTag !== null && count($methodSignatures) === 1) {
+								$phpDocReturnType = $returnTag->getType();
+							}
+							$immediatelyInvokedCallableParameters = array_map(static fn ($immediate) => TrinaryLogic::createFromBoolean($immediate), $phpDocBlock->getParamsImmediatelyInvokedCallable());
+							$closureThisParameters = array_map(static fn ($tag) => $tag->getType(), $phpDocBlock->getParamClosureThisTags());
+							foreach ($phpDocBlock->getParamTags() as $name => $paramTag) {
+								$phpDocParameterTypes[$name] = $paramTag->getType();
+							}
+							$asserts = Assertions::createFromResolvedPhpDocBlock($phpDocBlock);
+							$acceptsNamedArguments = $phpDocBlock->acceptsNamedArguments();
+
+							$selfOutTypeTag = $phpDocBlock->getSelfOutTag();
+							if ($selfOutTypeTag !== null) {
+								$selfOutType = $selfOutTypeTag->getType();
+							}
+
+							if ($phpDocBlock->hasPhpDocString()) {
+								$phpDocComment = $phpDocBlock->getPhpDocString();
+							}
+
+							foreach ($phpDocBlock->getParamOutTags() as $name => $paramOutTag) {
+								$phpDocParameterOutTypes[$name] = $paramOutTag->getType();
+							}
+
+							$signatureParameters = $methodSignature->getParameters();
+							foreach ($methodReflection->getParameters() as $paramI => $reflectionParameter) {
+								if (!array_key_exists($paramI, $signatureParameters)) {
+									continue;
+								}
+
+								$phpDocParameterNameMapping[$signatureParameters[$paramI]->getName()] = $reflectionParameter->getName();
+							}
+						}
+					}
+					$variantsByType[$signatureType][] = $this->createNativeMethodVariant($methodSignature, $stubPhpDocParameterTypes, $stubPhpDocParameterVariadicity, $stubPhpDocReturnType, $phpDocParameterTypes, $phpDocReturnType, $phpDocParameterNameMapping, $stubPhpParameterOutTypes, $phpDocParameterOutTypes, $stubImmediatelyInvokedCallableParameters, $immediatelyInvokedCallableParameters, $stubClosureThisParameters, $closureThisParameters, $signatureType !== 'named');
+				}
+			}
+
+			if ($this->signatureMapProvider->hasMethodMetadata($declaringClassName, $methodReflection->getName())) {
+				$hasSideEffects = TrinaryLogic::createFromBoolean($this->signatureMapProvider->getMethodMetadata($declaringClassName, $methodReflection->getName())['hasSideEffects']);
+			} else {
+				$hasSideEffects = TrinaryLogic::createMaybe();
+			}
+			return new NativeMethodReflection(
+				$this->reflectionProviderProvider->getReflectionProvider(),
+				$declaringClass,
+				$methodReflection,
+				$variantsByType['positional'],
+				$variantsByType['named'] ?? null,
+				$hasSideEffects,
+				$throwType,
+				$asserts,
+				$acceptsNamedArguments,
+				$selfOutType,
+				$phpDocComment,
+				$this->attributeReflectionFactory->fromNativeReflection($methodReflection->getAttributes(), InitializerExprContext::fromClassMethod($declaringClassName, null, $methodReflection->getName(), null)),
+			);
+		}
+
+		return $this->createUserlandMethodReflection(
+			$declaringClass,
+			$declaringClass,
+			$methodReflection,
+			$this->findMethodTrait($methodReflection),
+		);
+	}
+
+	public function createUserlandMethodReflection(ClassReflection $fileDeclaringClass, ClassReflection $actualDeclaringClass, ReflectionMethod $methodReflection, ?string $declaringTraitName): PhpMethodReflection
+	{
+		$resolvedPhpDoc = null;
+		$stubPhpDocPair = $this->findMethodPhpDocIncludingAncestors($fileDeclaringClass, $fileDeclaringClass, $methodReflection->getName(), array_map(static fn (ReflectionParameter $parameter): string => $parameter->getName(), $methodReflection->getParameters()));
+		$phpDocBlockClassReflection = $fileDeclaringClass;
+
+		$methodDeclaringClass = $methodReflection->getBetterReflection()->getDeclaringClass();
+
+		if ($stubPhpDocPair === null && $methodDeclaringClass->isTrait()) {
+			if (! $methodReflection->getDeclaringClass()->isTrait() || $methodDeclaringClass->getName() !== $methodReflection->getDeclaringClass()->getName()) {
+				$stubPhpDocPair = $this->findMethodPhpDocIncludingAncestors(
+					$this->reflectionProviderProvider->getReflectionProvider()->getClass($methodDeclaringClass->getName()),
+					$this->reflectionProviderProvider->getReflectionProvider()->getClass($methodReflection->getDeclaringClass()->getName()),
+					$methodReflection->getName(),
+					array_map(
+						static fn (ReflectionParameter $parameter): string => $parameter->getName(),
+						$methodReflection->getParameters(),
+					),
+				);
+			}
+		}
+
+		if ($stubPhpDocPair !== null) {
+			[$resolvedPhpDoc, $phpDocBlockClassReflection] = $stubPhpDocPair;
+		}
+
+		if ($resolvedPhpDoc === null) {
+			$docComment = $methodReflection->getDocComment() !== false ? $methodReflection->getDocComment() : null;
+			$positionalParameterNames = array_map(static fn (ReflectionParameter $parameter): string => $parameter->getName(), $methodReflection->getParameters());
+
+			$resolvedPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForMethod(
+				$docComment,
+				$actualDeclaringClass->getFileName(),
+				$actualDeclaringClass,
+				$declaringTraitName,
+				$methodReflection->getName(),
+				$positionalParameterNames,
+			);
+			$phpDocBlockClassReflection = $fileDeclaringClass;
+		}
+
+		$declaringTrait = null;
+		$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+		if (
+			$declaringTraitName !== null && $reflectionProvider->hasClass($declaringTraitName)
+		) {
+			$declaringTrait = $reflectionProvider->getClass($declaringTraitName);
+		}
+
+		$phpDocParameterTypes = [];
+		if ($methodReflection->isConstructor()) {
+			foreach ($methodReflection->getParameters() as $parameter) {
+				if (!$parameter->isPromoted()) {
+					continue;
+				}
+
+				if (!$methodReflection->getDeclaringClass()->hasProperty($parameter->getName())) {
+					continue;
+				}
+
+				$parameterProperty = $methodReflection->getDeclaringClass()->getProperty($parameter->getName());
+				if (!$parameterProperty->isPromoted()) {
+					continue;
+				}
+				if ($parameterProperty->getDocComment() === false) {
+					continue;
+				}
+
+				$propertyDocblock = $this->fileTypeMapper->getResolvedPhpDoc(
+					$fileDeclaringClass->getFileName(),
+					$fileDeclaringClass->getName(),
+					$declaringTraitName,
+					$methodReflection->getName(),
+					$parameterProperty->getDocComment(),
+				);
+				$varTags = $propertyDocblock->getVarTags();
+				if (isset($varTags[0]) && count($varTags) === 1) {
+					$phpDocType = $varTags[0]->getType();
+				} elseif (isset($varTags[$parameter->getName()])) {
+					$phpDocType = $varTags[$parameter->getName()]->getType();
+				} else {
+					continue;
+				}
+
+				$phpDocParameterTypes[$parameter->getName()] = $phpDocType;
+			}
+		}
+
+		$templateTypeMap = $resolvedPhpDoc->getTemplateTypeMap();
+		$immediatelyInvokedCallableParameters = array_map(static fn (bool $immediate) => TrinaryLogic::createFromBoolean($immediate), $resolvedPhpDoc->getParamsImmediatelyInvokedCallable());
+		$closureThisParameters = array_map(static fn ($tag) => $tag->getType(), $resolvedPhpDoc->getParamClosureThisTags());
+
+		foreach ($resolvedPhpDoc->getParamTags() as $paramName => $paramTag) {
+			if (array_key_exists($paramName, $phpDocParameterTypes)) {
+				continue;
+			}
+			$phpDocParameterTypes[$paramName] = $paramTag->getType();
+		}
+		foreach ($phpDocParameterTypes as $paramName => $paramType) {
+			$phpDocParameterTypes[$paramName] = TemplateTypeHelper::resolveTemplateTypes(
+				$paramType,
+				$phpDocBlockClassReflection->getActiveTemplateTypeMap(),
+				$phpDocBlockClassReflection->getCallSiteVarianceMap(),
+				TemplateTypeVariance::createContravariant(),
+			);
+		}
+
+		$phpDocParameterOutTypes = [];
+		foreach ($resolvedPhpDoc->getParamOutTags() as $paramName => $paramOutTag) {
+			$phpDocParameterOutTypes[$paramName] = TemplateTypeHelper::resolveTemplateTypes(
+				$paramOutTag->getType(),
+				$phpDocBlockClassReflection->getActiveTemplateTypeMap(),
+				$phpDocBlockClassReflection->getCallSiteVarianceMap(),
+				TemplateTypeVariance::createCovariant(),
+			);
+		}
+
+		$nativeReturnType = TypehintHelper::decideTypeFromReflection(
+			$methodReflection->getReturnType(),
+			null,
+			$actualDeclaringClass,
+		);
+		$phpDocReturnType = $this->getPhpDocReturnType($phpDocBlockClassReflection, $resolvedPhpDoc, $nativeReturnType);
+		$phpDocThrowType = $resolvedPhpDoc->getThrowsTag() !== null ? $resolvedPhpDoc->getThrowsTag()->getType() : null;
+		$deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag() !== null ? $resolvedPhpDoc->getDeprecatedTag()->getMessage() : null;
+		$isDeprecated = $resolvedPhpDoc->isDeprecated();
+		$isInternal = $resolvedPhpDoc->isInternal();
+		$isFinal = $resolvedPhpDoc->isFinal();
+		$isPure = $resolvedPhpDoc->isPure();
+		$asserts = Assertions::createFromResolvedPhpDocBlock($resolvedPhpDoc);
+		$acceptsNamedArguments = $resolvedPhpDoc->acceptsNamedArguments();
+		$selfOutType = $resolvedPhpDoc->getSelfOutTag() !== null ? $resolvedPhpDoc->getSelfOutTag()->getType() : null;
+		$phpDocComment = null;
+		if ($resolvedPhpDoc->hasPhpDocString()) {
+			$phpDocComment = $resolvedPhpDoc->getPhpDocString();
+		}
+
+		return $this->methodReflectionFactory->create(
+			$actualDeclaringClass,
+			$declaringTrait,
+			$methodReflection,
+			$templateTypeMap,
+			$phpDocParameterTypes,
+			$phpDocReturnType,
+			$phpDocThrowType,
+			$deprecatedDescription,
+			$isDeprecated,
+			$isInternal,
+			$isFinal,
+			$isPure,
+			$asserts,
+			$selfOutType,
+			$phpDocComment,
+			$phpDocParameterOutTypes,
+			$immediatelyInvokedCallableParameters,
+			$closureThisParameters,
+			$acceptsNamedArguments,
+			$this->attributeReflectionFactory->fromNativeReflection($methodReflection->getAttributes(), InitializerExprContext::fromClassMethod($actualDeclaringClass->getName(), $declaringTraitName, $methodReflection->getName(), $actualDeclaringClass->getFileName())),
+		);
+	}
+
+	/**
+	 * @param array<string, Type> $stubPhpDocParameterTypes
+	 * @param array<string, bool> $stubPhpDocParameterVariadicity
+	 * @param array<string, Type> $phpDocParameterTypes
+	 * @param array<string, string> $phpDocParameterNameMapping
+	 * @param array<string, Type> $stubPhpDocParameterOutTypes
+	 * @param array<string, Type> $phpDocParameterOutTypes
+	 * @param array<string, TrinaryLogic> $stubImmediatelyInvokedCallableParameters
+	 * @param array<string, TrinaryLogic> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $stubClosureThisParameters
+	 * @param array<string, Type> $closureThisParameters
+	 */
+	private function createNativeMethodVariant(
+		FunctionSignature $methodSignature,
+		array $stubPhpDocParameterTypes,
+		array $stubPhpDocParameterVariadicity,
+		?Type $stubPhpDocReturnType,
+		array $phpDocParameterTypes,
+		?Type $phpDocReturnType,
+		array $phpDocParameterNameMapping,
+		array $stubPhpDocParameterOutTypes,
+		array $phpDocParameterOutTypes,
+		array $stubImmediatelyInvokedCallableParameters,
+		array $immediatelyInvokedCallableParameters,
+		array $stubClosureThisParameters,
+		array $closureThisParameters,
+		bool $usePhpDocParameterNames,
+	): ExtendedFunctionVariant
+	{
+		$parameters = [];
+		foreach ($methodSignature->getParameters() as $parameterSignature) {
+			$type = null;
+			$phpDocType = null;
+			$parameterOutType = null;
+
+			$phpDocParameterName = $phpDocParameterNameMapping[$parameterSignature->getName()] ?? $parameterSignature->getName();
+
+			if (isset($stubPhpDocParameterTypes[$parameterSignature->getName()])) {
+				$type = $stubPhpDocParameterTypes[$parameterSignature->getName()];
+				$phpDocType = $stubPhpDocParameterTypes[$parameterSignature->getName()];
+			} elseif (isset($phpDocParameterTypes[$phpDocParameterName])) {
+				$phpDocType = $phpDocParameterTypes[$phpDocParameterName];
+			}
+
+			if (isset($stubPhpDocParameterOutTypes[$parameterSignature->getName()])) {
+				$parameterOutType = $stubPhpDocParameterOutTypes[$parameterSignature->getName()];
+			} elseif (isset($phpDocParameterOutTypes[$phpDocParameterName])) {
+				$parameterOutType = $phpDocParameterOutTypes[$phpDocParameterName];
+			}
+
+			if (isset($stubImmediatelyInvokedCallableParameters[$parameterSignature->getName()])) {
+				$immediatelyInvoked = $stubImmediatelyInvokedCallableParameters[$parameterSignature->getName()];
+			} elseif (isset($immediatelyInvokedCallableParameters[$phpDocParameterName])) {
+				$immediatelyInvoked = $immediatelyInvokedCallableParameters[$phpDocParameterName];
+			} else {
+				$immediatelyInvoked = TrinaryLogic::createMaybe();
+			}
+
+			$closureThisType = null;
+			if (isset($stubClosureThisParameters[$parameterSignature->getName()])) {
+				$closureThisType = $stubClosureThisParameters[$parameterSignature->getName()];
+			} elseif (isset($closureThisParameters[$phpDocParameterName])) {
+				$closureThisType = $closureThisParameters[$phpDocParameterName];
+			}
+
+			$parameters[] = new ExtendedNativeParameterReflection(
+				$usePhpDocParameterNames
+					? $phpDocParameterName
+					: $parameterSignature->getName(),
+				$parameterSignature->isOptional(),
+				$type ?? $parameterSignature->getType(),
+				$phpDocType ?? new MixedType(),
+				$parameterSignature->getNativeType(),
+				$parameterSignature->passedByReference(),
+				$stubPhpDocParameterVariadicity[$parameterSignature->getName()] ?? $parameterSignature->isVariadic(),
+				$parameterSignature->getDefaultValue(),
+				$parameterOutType ?? $parameterSignature->getOutType(),
+				$immediatelyInvoked,
+				$closureThisType,
+				[],
+			);
+		}
+
+		if ($stubPhpDocReturnType !== null) {
+			$returnType = $stubPhpDocReturnType;
+			$phpDocReturnType = $stubPhpDocReturnType;
+		} else {
+			$returnType = TypehintHelper::decideType($methodSignature->getReturnType(), $phpDocReturnType);
+		}
+
+		return new ExtendedFunctionVariant(
+			TemplateTypeMap::createEmpty(),
+			null,
+			$parameters,
+			$methodSignature->isVariadic(),
+			$returnType,
+			$phpDocReturnType ?? new MixedType(),
+			$methodSignature->getNativeReturnType(),
+		);
+	}
+
+	private function findPropertyTrait(ReflectionProperty $propertyReflection): ?string
+	{
+		$declaringClass = $propertyReflection->getBetterReflection()->getDeclaringClass();
+		if ($declaringClass->isTrait()) {
+			if ($propertyReflection->getDeclaringClass()->isTrait() && $propertyReflection->getDeclaringClass()->getName() === $declaringClass->getName()) {
+				return null;
+			}
+
+			return $declaringClass->getName();
+		}
+
+		return null;
+	}
+
+	private function findMethodTrait(
+		ReflectionMethod $methodReflection,
+	): ?string
+	{
+		$declaringClass = $methodReflection->getBetterReflection()->getDeclaringClass();
+		if ($declaringClass->isTrait()) {
+			if ($methodReflection->getDeclaringClass()->isTrait() && $declaringClass->getName() === $methodReflection->getDeclaringClass()->getName()) {
+				return null;
+			}
+
+			return $declaringClass->getName();
+		}
+
+		return null;
+	}
+
+	private function inferPrivatePropertyType(
+		string $propertyName,
+		MethodReflection $constructor,
+	): ?Type
+	{
+		$declaringClassName = $constructor->getDeclaringClass()->getName();
+		if (isset($this->inferClassConstructorPropertyTypesInProcess[$declaringClassName])) {
+			return null;
+		}
+		$this->inferClassConstructorPropertyTypesInProcess[$declaringClassName] = true;
+		$propertyTypes = $this->inferAndCachePropertyTypes($constructor);
+		unset($this->inferClassConstructorPropertyTypesInProcess[$declaringClassName]);
+		if (array_key_exists($propertyName, $propertyTypes)) {
+			return $propertyTypes[$propertyName];
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return array<string, Type>
+	 */
+	private function inferAndCachePropertyTypes(
+		MethodReflection $constructor,
+	): array
+	{
+		$declaringClass = $constructor->getDeclaringClass();
+		if (isset($this->propertyTypesCache[$declaringClass->getName()])) {
+			return $this->propertyTypesCache[$declaringClass->getName()];
+		}
+		if ($declaringClass->getFileName() === null) {
+			return $this->propertyTypesCache[$declaringClass->getName()] = [];
+		}
+
+		$fileName = $declaringClass->getFileName();
+		$nodes = $this->parser->parseFile($fileName);
+		$classNode = $this->findClassNode($declaringClass->getName(), $nodes);
+		if ($classNode === null) {
+			return $this->propertyTypesCache[$declaringClass->getName()] = [];
+		}
+
+		$methodNode = $this->findConstructorNode($constructor->getName(), $classNode->stmts);
+		if ($methodNode === null || $methodNode->stmts === null || count($methodNode->stmts) === 0) {
+			return $this->propertyTypesCache[$declaringClass->getName()] = [];
+		}
+
+		$classNameParts = explode('\\', $declaringClass->getName());
+		$namespace = null;
+		if (count($classNameParts) > 1) {
+			$namespace = implode('\\', array_slice($classNameParts, 0, -1));
+		}
+
+		$classScope = $this->scopeFactory->create(ScopeContext::create($fileName));
+		if ($namespace !== null) {
+			$classScope = $classScope->enterNamespace($namespace);
+		}
+		$classScope = $classScope->enterClass($declaringClass);
+		[$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, $isFinal, $isPure, $acceptsNamedArguments, , $phpDocComment, $asserts, $selfOutType, $phpDocParameterOutTypes] = $this->nodeScopeResolver->getPhpDocs($classScope, $methodNode);
+		$methodScope = $classScope->enterClassMethod(
+			$methodNode,
+			$templateTypeMap,
+			$phpDocParameterTypes,
+			$phpDocReturnType,
+			$phpDocThrowType,
+			$deprecatedDescription,
+			$isDeprecated,
+			$isInternal,
+			$isFinal,
+			$isPure,
+			$acceptsNamedArguments,
+			$asserts,
+			$selfOutType,
+			$phpDocComment,
+			$phpDocParameterOutTypes,
+			$phpDocImmediatelyInvokedCallableParameters,
+			$phpDocClosureThisTypeParameters,
+		);
+
+		$propertyTypes = [];
+		foreach ($methodNode->stmts as $statement) {
+			if (!$statement instanceof Node\Stmt\Expression) {
+				continue;
+			}
+
+			$expr = $statement->expr;
+			if (!$expr instanceof Node\Expr\Assign) {
+				continue;
+			}
+
+			if (!$expr->var instanceof Node\Expr\PropertyFetch) {
+				continue;
+			}
+
+			$propertyFetch = $expr->var;
+			if (
+				!$propertyFetch->var instanceof Node\Expr\Variable
+				|| $propertyFetch->var->name !== 'this'
+				|| !$propertyFetch->name instanceof Node\Identifier
+			) {
+				continue;
+			}
+
+			$propertyType = $methodScope->getType($expr->expr);
+			if ($propertyType instanceof ErrorType || $propertyType instanceof NeverType) {
+				continue;
+			}
+
+			$propertyType = $propertyType->generalize(GeneralizePrecision::lessSpecific());
+			if ($propertyType->isConstantArray()->yes()) {
+				$propertyType = new ArrayType(new MixedType(true), new MixedType(true));
+			}
+
+			$propertyTypes[$propertyFetch->name->toString()] = $propertyType;
+		}
+
+		return $this->propertyTypesCache[$declaringClass->getName()] = $propertyTypes;
+	}
+
+	/**
+	 * @param Node[] $nodes
+	 */
+	private function findClassNode(string $className, array $nodes): ?Class_
+	{
+		foreach ($nodes as $node) {
+			if (
+				$node instanceof Class_
+				&& $node->namespacedName !== null
+				&& $node->namespacedName->toString() === $className
+			) {
+				return $node;
+			}
+			if (
+				!$node instanceof Namespace_
+				&& !$node instanceof Declare_
+			) {
+				continue;
+			}
+			$subNodeNames = $node->getSubNodeNames();
+			foreach ($subNodeNames as $subNodeName) {
+				$subNode = $node->{$subNodeName};
+				if (!is_array($subNode)) {
+					$subNode = [$subNode];
+				}
+				$result = $this->findClassNode($className, $subNode);
+				if ($result === null) {
+					continue;
+				}
+				return $result;
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * @param Node\Stmt[] $classStatements
+	 */
+	private function findConstructorNode(string $methodName, array $classStatements): ?ClassMethod
+	{
+		foreach ($classStatements as $statement) {
+			if (
+				$statement instanceof ClassMethod
+				&& $statement->name->toString() === $methodName
+			) {
+				return $statement;
+			}
+		}
+		return null;
+	}
+
+	private function getPhpDocReturnType(ClassReflection $phpDocBlockClassReflection, ResolvedPhpDocBlock $resolvedPhpDoc, Type $nativeReturnType): ?Type
+	{
+		$returnTag = $resolvedPhpDoc->getReturnTag();
+
+		if ($returnTag === null) {
+			return null;
+		}
+
+		$phpDocReturnType = $returnTag->getType();
+		$phpDocReturnType = TemplateTypeHelper::resolveTemplateTypes(
+			$phpDocReturnType,
+			$phpDocBlockClassReflection->getActiveTemplateTypeMap(),
+			$phpDocBlockClassReflection->getCallSiteVarianceMap(),
+			TemplateTypeVariance::createCovariant(),
+		);
+
+		if ($returnTag->isExplicit() || $nativeReturnType->isSuperTypeOf($phpDocReturnType)->yes()) {
+			return $phpDocReturnType;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param array<int, string> $positionalParameterNames
+	 * @return array{ResolvedPhpDocBlock, ClassReflection}|null
+	 */
+	private function findMethodPhpDocIncludingAncestors(
+		ClassReflection $declaringClass,
+		ClassReflection $implementingClass,
+		string $methodName,
+		array $positionalParameterNames,
+	): ?array
+	{
+		$declaringClassName = $declaringClass->getName();
+		$resolved = $this->stubPhpDocProvider->findMethodPhpDoc($declaringClassName, $implementingClass->getName(), $methodName, $positionalParameterNames);
+		if ($resolved !== null) {
+			return [$resolved, $declaringClass];
+		}
+		if (!$this->stubPhpDocProvider->isKnownClass($declaringClassName)) {
+			return null;
+		}
+
+		$ancestors = $declaringClass->getAncestors();
+		foreach ($ancestors as $ancestor) {
+			if ($ancestor->getName() === $declaringClassName) {
+				continue;
+			}
+			if (!$ancestor->hasNativeMethod($methodName)) {
+				continue;
+			}
+
+			$resolved = $this->stubPhpDocProvider->findMethodPhpDoc($ancestor->getName(), $ancestor->getName(), $methodName, $positionalParameterNames);
+			if ($resolved === null) {
+				continue;
+			}
+
+			return [$resolved, $ancestor];
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpFunctionFromParserNodeReflection.php b/src/Reflection/Php/PhpFunctionFromParserNodeReflection.php
new file mode 100644
index 00000000..8ed20253
--- /dev/null
+++ b/src/Reflection/Php/PhpFunctionFromParserNodeReflection.php
@@ -0,0 +1,338 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\FunctionLike;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use function array_reverse;
+use function is_array;
+use function is_string;
+
+/**
+ * @api
+ */
+class PhpFunctionFromParserNodeReflection implements FunctionReflection, ExtendedParametersAcceptor
+{
+
+	/** @var Function_|ClassMethod|Node\PropertyHook */
+	private Node\FunctionLike $functionLike;
+
+	/** @var list<ExtendedFunctionVariant>|null */
+	private ?array $variants = null;
+
+	/**
+	 * @param Function_|ClassMethod|Node\PropertyHook $functionLike
+	 * @param Type[] $realParameterTypes
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $realParameterDefaultValues
+	 * @param array<string, list<AttributeReflection>> $parameterAttributes
+	 * @param Type[] $parameterOutTypes
+	 * @param array<string, bool> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		FunctionLike $functionLike,
+		private string $fileName,
+		private TemplateTypeMap $templateTypeMap,
+		private array $realParameterTypes,
+		private array $phpDocParameterTypes,
+		private array $realParameterDefaultValues,
+		private array $parameterAttributes,
+		private Type $realReturnType,
+		private ?Type $phpDocReturnType,
+		private ?Type $throwType,
+		private ?string $deprecatedDescription,
+		private bool $isDeprecated,
+		private bool $isInternal,
+		protected ?bool $isPure,
+		private bool $acceptsNamedArguments,
+		private Assertions $assertions,
+		private ?string $phpDocComment,
+		private array $parameterOutTypes,
+		private array $immediatelyInvokedCallableParameters,
+		private array $phpDocClosureThisTypeParameters,
+		private array $attributes,
+	)
+	{
+		$this->functionLike = $functionLike;
+	}
+
+	protected function getFunctionLike(): FunctionLike
+	{
+		return $this->functionLike;
+	}
+
+	public function getFileName(): string
+	{
+		return $this->fileName;
+	}
+
+	public function getName(): string
+	{
+		if ($this->functionLike instanceof ClassMethod) {
+			return $this->functionLike->name->name;
+		}
+
+		if (!$this->functionLike instanceof Function_) {
+			// PropertyHook is handled in PhpMethodFromParserNodeReflection subclass
+			throw new ShouldNotHappenException();
+		}
+
+		if ($this->functionLike->namespacedName === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return (string) $this->functionLike->namespacedName;
+	}
+
+	public function getVariants(): array
+	{
+		if ($this->variants === null) {
+			$this->variants = [
+				new ExtendedFunctionVariant(
+					$this->getTemplateTypeMap(),
+					$this->getResolvedTemplateTypeMap(),
+					$this->getParameters(),
+					$this->isVariadic(),
+					$this->getReturnType(),
+					$this->getPhpDocReturnType(),
+					$this->getNativeReturnType(),
+				),
+			];
+		}
+
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this;
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		$parameters = [];
+		$isOptional = true;
+
+		/** @var Node\Param $parameter */
+		foreach (array_reverse($this->functionLike->getParams()) as $parameter) {
+			if ($parameter->default === null && !$parameter->variadic) {
+				$isOptional = false;
+			}
+
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (isset($this->immediatelyInvokedCallableParameters[$parameter->var->name])) {
+				$immediatelyInvokedCallable = TrinaryLogic::createFromBoolean($this->immediatelyInvokedCallableParameters[$parameter->var->name]);
+			} else {
+				$immediatelyInvokedCallable = TrinaryLogic::createMaybe();
+			}
+
+			if (isset($this->phpDocClosureThisTypeParameters[$parameter->var->name])) {
+				$closureThisType = $this->phpDocClosureThisTypeParameters[$parameter->var->name];
+			} else {
+				$closureThisType = null;
+			}
+
+			$parameters[] = new PhpParameterFromParserNodeReflection(
+				$parameter->var->name,
+				$isOptional,
+				$this->realParameterTypes[$parameter->var->name],
+				$this->phpDocParameterTypes[$parameter->var->name] ?? null,
+				$parameter->byRef
+					? PassedByReference::createCreatesNewVariable()
+					: PassedByReference::createNo(),
+				$this->realParameterDefaultValues[$parameter->var->name] ?? null,
+				$parameter->variadic,
+				$this->parameterOutTypes[$parameter->var->name] ?? null,
+				$immediatelyInvokedCallable,
+				$closureThisType,
+				$this->parameterAttributes[$parameter->var->name] ?? [],
+			);
+		}
+
+		return array_reverse($parameters);
+	}
+
+	public function isVariadic(): bool
+	{
+		foreach ($this->functionLike->getParams() as $parameter) {
+			if ($parameter->variadic) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function getReturnType(): Type
+	{
+		return TypehintHelper::decideType($this->realReturnType, $this->phpDocReturnType);
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		return $this->phpDocReturnType ?? new MixedType();
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->realReturnType;
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return TemplateTypeVarianceMap::createEmpty();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->isDeprecated) {
+			return $this->deprecatedDescription;
+		}
+
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isDeprecated);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isInternal);
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->throwType;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if ($this->getReturnType()->isVoid()->yes()) {
+			return TrinaryLogic::createYes();
+		}
+		if ($this->isPure !== null) {
+			return TrinaryLogic::createFromBoolean(!$this->isPure);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isBuiltin(): bool
+	{
+		return false;
+	}
+
+	public function isGenerator(): bool
+	{
+		return $this->nodeIsOrContainsYield($this->functionLike);
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->acceptsNamedArguments);
+	}
+
+	private function nodeIsOrContainsYield(Node $node): bool
+	{
+		if ($node instanceof Node\Expr\Yield_) {
+			return true;
+		}
+
+		if ($node instanceof Node\Expr\YieldFrom) {
+			return true;
+		}
+
+		foreach ($node->getSubNodeNames() as $nodeName) {
+			$nodeProperty = $node->$nodeName;
+
+			if ($nodeProperty instanceof Node && $this->nodeIsOrContainsYield($nodeProperty)) {
+				return true;
+			}
+
+			if (!is_array($nodeProperty)) {
+				continue;
+			}
+
+			foreach ($nodeProperty as $nodePropertyArrayItem) {
+				if ($nodePropertyArrayItem instanceof Node && $this->nodeIsOrContainsYield($nodePropertyArrayItem)) {
+					return true;
+				}
+			}
+		}
+
+		return false;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->assertions;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->phpDocComment;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->functionLike->returnsByRef());
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->isPure === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createFromBoolean($this->isPure);
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpFunctionReflection.php b/src/Reflection/Php/PhpFunctionReflection.php
new file mode 100644
index 00000000..9d456b3c
--- /dev/null
+++ b/src/Reflection/Php/PhpFunctionReflection.php
@@ -0,0 +1,278 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\Internal\DeprecatedAttributeHelper;
+use PHPStan\Parser\Parser;
+use PHPStan\Parser\VariadicFunctionsVisitor;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use function array_key_exists;
+use function array_map;
+use function count;
+use function is_array;
+use function is_file;
+
+final class PhpFunctionReflection implements FunctionReflection
+{
+
+	/** @var list<ExtendedFunctionVariant>|null */
+	private ?array $variants = null;
+
+	private ?bool $containsVariadicCalls = null;
+
+	/**
+	 * @param array<string, Type> $phpDocParameterTypes
+	 * @param array<string, Type> $phpDocParameterOutTypes
+	 * @param array<string, bool> $phpDocParameterImmediatelyInvokedCallable
+	 * @param array<string, Type> $phpDocParameterClosureThisTypes
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionFunction $reflection,
+		private Parser $parser,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private TemplateTypeMap $templateTypeMap,
+		private array $phpDocParameterTypes,
+		private ?Type $phpDocReturnType,
+		private ?Type $phpDocThrowType,
+		private ?string $deprecatedDescription,
+		private bool $isDeprecated,
+		private bool $isInternal,
+		private ?string $filename,
+		private ?bool $isPure,
+		private Assertions $asserts,
+		private bool $acceptsNamedArguments,
+		private ?string $phpDocComment,
+		private array $phpDocParameterOutTypes,
+		private array $phpDocParameterImmediatelyInvokedCallable,
+		private array $phpDocParameterClosureThisTypes,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getFileName(): ?string
+	{
+		if ($this->filename === null) {
+			return null;
+		}
+
+		if (!is_file($this->filename)) {
+			return null;
+		}
+
+		return $this->filename;
+	}
+
+	public function getVariants(): array
+	{
+		if ($this->variants === null) {
+			$this->variants = [
+				new ExtendedFunctionVariant(
+					$this->templateTypeMap,
+					null,
+					$this->getParameters(),
+					$this->isVariadic(),
+					$this->getReturnType(),
+					$this->getPhpDocReturnType(),
+					$this->getNativeReturnType(),
+				),
+			];
+		}
+
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	private function getParameters(): array
+	{
+		return array_map(function (ReflectionParameter $reflection): PhpParameterReflection {
+			if (array_key_exists($reflection->getName(), $this->phpDocParameterImmediatelyInvokedCallable)) {
+				$immediatelyInvokedCallable = TrinaryLogic::createFromBoolean($this->phpDocParameterImmediatelyInvokedCallable[$reflection->getName()]);
+			} else {
+				$immediatelyInvokedCallable = TrinaryLogic::createMaybe();
+			}
+			return new PhpParameterReflection(
+				$this->initializerExprTypeResolver,
+				$reflection,
+				$this->phpDocParameterTypes[$reflection->getName()] ?? null,
+				null,
+				$this->phpDocParameterOutTypes[$reflection->getName()] ?? null,
+				$immediatelyInvokedCallable,
+				$this->phpDocParameterClosureThisTypes[$reflection->getName()] ?? null,
+				$this->attributeReflectionFactory->fromNativeReflection($reflection->getAttributes(), InitializerExprContext::fromReflectionParameter($reflection)),
+			);
+		}, $this->reflection->getParameters());
+	}
+
+	private function isVariadic(): bool
+	{
+		$isNativelyVariadic = $this->reflection->isVariadic();
+		if (!$isNativelyVariadic && $this->reflection->getFileName() !== false && !$this->isBuiltin()) {
+			$filename = $this->reflection->getFileName();
+
+			if ($this->containsVariadicCalls !== null) {
+				return $this->containsVariadicCalls;
+			}
+
+			if (array_key_exists($this->reflection->getName(), VariadicFunctionsVisitor::$cache)) {
+				return $this->containsVariadicCalls = VariadicFunctionsVisitor::$cache[$this->reflection->getName()];
+			}
+
+			$nodes = $this->parser->parseFile($filename);
+			if (count($nodes) > 0) {
+				$variadicFunctions = $nodes[0]->getAttribute(VariadicFunctionsVisitor::ATTRIBUTE_NAME);
+
+				if (
+					is_array($variadicFunctions)
+					&& array_key_exists($this->reflection->getName(), $variadicFunctions)
+				) {
+					return $this->containsVariadicCalls = $variadicFunctions[$this->reflection->getName()];
+				}
+			}
+
+			return $this->containsVariadicCalls = false;
+		}
+
+		return $isNativelyVariadic;
+	}
+
+	private function getReturnType(): Type
+	{
+		return TypehintHelper::decideTypeFromReflection(
+			$this->reflection->getReturnType(),
+			$this->phpDocReturnType,
+		);
+	}
+
+	private function getPhpDocReturnType(): Type
+	{
+		if ($this->phpDocReturnType !== null) {
+			return $this->phpDocReturnType;
+		}
+
+		return new MixedType();
+	}
+
+	private function getNativeReturnType(): Type
+	{
+		return TypehintHelper::decideTypeFromReflection($this->reflection->getReturnType());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->isDeprecated) {
+			return $this->deprecatedDescription;
+		}
+
+		if ($this->reflection->isDeprecated()) {
+			$attributes = $this->reflection->getBetterReflection()->getAttributes();
+			return DeprecatedAttributeHelper::getDeprecatedDescription($attributes);
+		}
+
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(
+			$this->isDeprecated || $this->reflection->isDeprecated(),
+		);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isInternal);
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->phpDocThrowType;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if ($this->getReturnType()->isVoid()->yes()) {
+			return TrinaryLogic::createYes();
+		}
+		if ($this->isPure !== null) {
+			return TrinaryLogic::createFromBoolean(!$this->isPure);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->isPure === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createFromBoolean($this->isPure);
+	}
+
+	public function isBuiltin(): bool
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->asserts;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->phpDocComment;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->returnsReference());
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->acceptsNamedArguments);
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpMethodFromParserNodeReflection.php b/src/Reflection/Php/PhpMethodFromParserNodeReflection.php
new file mode 100644
index 00000000..846726e1
--- /dev/null
+++ b/src/Reflection/Php/PhpMethodFromParserNodeReflection.php
@@ -0,0 +1,300 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassMethod;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MissingMethodFromReflectionException;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VoidType;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @api
+ */
+final class PhpMethodFromParserNodeReflection extends PhpFunctionFromParserNodeReflection implements ExtendedMethodReflection
+{
+
+	/**
+	 * @param Type[] $realParameterTypes
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $realParameterDefaultValues
+	 * @param array<string, list<AttributeReflection>> $parameterAttributes
+	 * @param array<string, bool> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private ClassMethod|Node\PropertyHook $classMethod,
+		private ?string $hookForProperty,
+		string $fileName,
+		TemplateTypeMap $templateTypeMap,
+		array $realParameterTypes,
+		array $phpDocParameterTypes,
+		array $realParameterDefaultValues,
+		array $parameterAttributes,
+		Type $realReturnType,
+		?Type $phpDocReturnType,
+		?Type $throwType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		bool $isInternal,
+		private bool $isFinal,
+		?bool $isPure,
+		bool $acceptsNamedArguments,
+		Assertions $assertions,
+		private ?Type $selfOutType,
+		?string $phpDocComment,
+		array $parameterOutTypes,
+		array $immediatelyInvokedCallableParameters,
+		array $phpDocClosureThisTypeParameters,
+		private bool $isConstructor,
+		array $attributes,
+	)
+	{
+		if ($this->classMethod instanceof Node\PropertyHook) {
+			if ($this->hookForProperty === null) {
+				throw new ShouldNotHappenException('Hook was provided but property was not');
+			}
+		} elseif ($this->hookForProperty !== null) {
+			throw new ShouldNotHappenException('Hooked property was provided but hook was not');
+		}
+
+		$name = strtolower($classMethod->name->name);
+		if ($this->isConstructor) {
+			$realReturnType = new VoidType();
+		}
+		if (in_array($name, ['__destruct', '__unset', '__wakeup', '__clone'], true)) {
+			$realReturnType = new VoidType();
+		}
+		if ($name === '__tostring') {
+			$realReturnType = new StringType();
+		}
+		if ($name === '__isset') {
+			$realReturnType = new BooleanType();
+		}
+		if ($name === '__sleep') {
+			$realReturnType = new ArrayType(new IntegerType(), new StringType());
+		}
+		if ($name === '__set_state') {
+			$realReturnType = TypeCombinator::intersect(new ObjectWithoutClassType(), $realReturnType);
+		}
+		if ($name === '__set') {
+			$realReturnType = new VoidType();
+		}
+
+		if ($name === '__debuginfo') {
+			$realReturnType = TypeCombinator::intersect(TypeCombinator::addNull(
+				new ArrayType(new MixedType(true), new MixedType(true)),
+			), $realReturnType);
+		}
+
+		if ($name === '__unserialize') {
+			$realReturnType = new VoidType();
+		}
+		if ($name === '__serialize') {
+			$realReturnType = new ArrayType(new MixedType(true), new MixedType(true));
+		}
+
+		parent::__construct(
+			$classMethod,
+			$fileName,
+			$templateTypeMap,
+			$realParameterTypes,
+			$phpDocParameterTypes,
+			$realParameterDefaultValues,
+			$parameterAttributes,
+			$realReturnType,
+			$phpDocReturnType,
+			$throwType,
+			$deprecatedDescription,
+			$isDeprecated,
+			$isInternal,
+			$isPure,
+			$acceptsNamedArguments,
+			$assertions,
+			$phpDocComment,
+			$parameterOutTypes,
+			$immediatelyInvokedCallableParameters,
+			$phpDocClosureThisTypeParameters,
+			$attributes,
+		);
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		try {
+			return $this->declaringClass->getNativeMethod($this->getClassMethod()->name->name)->getPrototype();
+		} catch (MissingMethodFromReflectionException) {
+			return $this;
+		}
+	}
+
+	private function getClassMethod(): ClassMethod|Node\PropertyHook
+	{
+		/** @var Node\Stmt\ClassMethod|Node\PropertyHook $functionLike */
+		$functionLike = $this->getFunctionLike();
+		return $functionLike;
+	}
+
+	public function getName(): string
+	{
+		$function = $this->getFunctionLike();
+		if (!$function instanceof Node\PropertyHook) {
+			return parent::getName();
+		}
+
+		if ($this->hookForProperty === null) {
+			throw new ShouldNotHappenException('Hook was provided but property was not');
+		}
+
+		return sprintf('$%s::%s', $this->hookForProperty, $function->name->toString());
+	}
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getHookedPropertyName()
+	 * @phpstan-assert-if-true !null $this->getPropertyHookName()
+	 */
+	public function isPropertyHook(): bool
+	{
+		return $this->hookForProperty !== null;
+	}
+
+	public function getHookedPropertyName(): ?string
+	{
+		return $this->hookForProperty;
+	}
+
+	/**
+	 * @return 'get'|'set'|null
+	 */
+	public function getPropertyHookName(): ?string
+	{
+		$function = $this->getFunctionLike();
+		if (!$function instanceof Node\PropertyHook) {
+			return null;
+		}
+
+		$name = $function->name->toLowerString();
+		if (!in_array($name, ['get', 'set'], true)) {
+			throw new ShouldNotHappenException(sprintf('Unknown property hook: %s', $name));
+		}
+
+		return $name;
+	}
+
+	public function isStatic(): bool
+	{
+		$method = $this->getClassMethod();
+		if ($method instanceof Node\PropertyHook) {
+			return false;
+		}
+
+		return $method->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		$method = $this->getClassMethod();
+		if ($method instanceof Node\PropertyHook) {
+			return false;
+		}
+
+		return $method->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		$method = $this->getClassMethod();
+		if ($method instanceof Node\PropertyHook) {
+			return true;
+		}
+
+		return $method->isPublic();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		$method = $this->getClassMethod();
+		if ($method instanceof Node\PropertyHook) {
+			return TrinaryLogic::createFromBoolean($method->isFinal());
+		}
+
+		return TrinaryLogic::createFromBoolean($method->isFinal() || $this->isFinal);
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->getClassMethod()->isFinal());
+	}
+
+	public function isBuiltin(): bool
+	{
+		return false;
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return $this->selfOutType;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->getClassMethod()->returnsByRef());
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		$method = $this->getClassMethod();
+		if ($method instanceof Node\PropertyHook) {
+			return TrinaryLogic::createFromBoolean($method->body === null);
+		}
+
+		return TrinaryLogic::createFromBoolean($method->isAbstract());
+	}
+
+	public function isConstructor(): bool
+	{
+		return $this->isConstructor;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if (
+			strtolower($this->getName()) !== '__construct'
+			&& $this->getReturnType()->isVoid()->yes()
+		) {
+			return TrinaryLogic::createYes();
+		}
+		if ($this->isPure !== null) {
+			return TrinaryLogic::createFromBoolean(!$this->isPure);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+}
diff --git a/src/Reflection/Php/PhpMethodReflection.php b/src/Reflection/Php/PhpMethodReflection.php
new file mode 100644
index 00000000..d9a1008f
--- /dev/null
+++ b/src/Reflection/Php/PhpMethodReflection.php
@@ -0,0 +1,529 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\Internal\DeprecatedAttributeHelper;
+use PHPStan\Parser\Parser;
+use PHPStan\Parser\VariadicMethodsVisitor;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\MethodPrototypeReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use PHPStan\Type\VoidType;
+use ReflectionException;
+use function array_key_exists;
+use function array_map;
+use function count;
+use function explode;
+use function in_array;
+use function is_array;
+use function sprintf;
+use function strtolower;
+use const PHP_VERSION_ID;
+
+/**
+ * @api
+ */
+final class PhpMethodReflection implements ExtendedMethodReflection
+{
+
+	/** @var list<PhpParameterReflection>|null */
+	private ?array $parameters = null;
+
+	private ?Type $returnType = null;
+
+	private ?Type $nativeReturnType = null;
+
+	/** @var list<ExtendedFunctionVariant>|null */
+	private ?array $variants = null;
+
+	private ?bool $containsVariadicCalls = null;
+
+	/**
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $phpDocParameterOutTypes
+	 * @param array<string, TrinaryLogic> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ClassReflection $declaringClass,
+		private ?ClassReflection $declaringTrait,
+		private ReflectionMethod $reflection,
+		private ReflectionProvider $reflectionProvider,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+		private Parser $parser,
+		private TemplateTypeMap $templateTypeMap,
+		private array $phpDocParameterTypes,
+		private ?Type $phpDocReturnType,
+		private ?Type $phpDocThrowType,
+		private ?string $deprecatedDescription,
+		private bool $isDeprecated,
+		private bool $isInternal,
+		private bool $isFinal,
+		private ?bool $isPure,
+		private Assertions $asserts,
+		private bool $acceptsNamedArguments,
+		private ?Type $selfOutType,
+		private ?string $phpDocComment,
+		private array $phpDocParameterOutTypes,
+		private array $immediatelyInvokedCallableParameters,
+		private array $phpDocClosureThisTypeParameters,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function getDeclaringTrait(): ?ClassReflection
+	{
+		return $this->declaringTrait;
+	}
+
+	/**
+	 * @return self|MethodPrototypeReflection
+	 */
+	public function getPrototype(): ClassMemberReflection
+	{
+		try {
+			$prototypeMethod = $this->reflection->getPrototype();
+			$prototypeDeclaringClass = $this->declaringClass->getAncestorWithClassName($prototypeMethod->getDeclaringClass()->getName());
+			if ($prototypeDeclaringClass === null) {
+				$prototypeDeclaringClass = $this->reflectionProvider->getClass($prototypeMethod->getDeclaringClass()->getName());
+			}
+
+			if (!$prototypeDeclaringClass->hasNativeMethod($prototypeMethod->getName())) {
+				return $this;
+			}
+
+			$tentativeReturnType = null;
+			if ($prototypeMethod->getTentativeReturnType() !== null) {
+				$tentativeReturnType = TypehintHelper::decideTypeFromReflection($prototypeMethod->getTentativeReturnType(), null, $prototypeDeclaringClass);
+			}
+
+			return new MethodPrototypeReflection(
+				$prototypeMethod->getName(),
+				$prototypeDeclaringClass,
+				$prototypeMethod->isStatic(),
+				$prototypeMethod->isPrivate(),
+				$prototypeMethod->isPublic(),
+				$prototypeMethod->isAbstract(),
+				$prototypeMethod->isFinal(),
+				$prototypeMethod->isInternal(),
+				$prototypeDeclaringClass->getNativeMethod($prototypeMethod->getName())->getVariants(),
+				$tentativeReturnType,
+			);
+		} catch (ReflectionException) {
+			return $this;
+		}
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function getName(): string
+	{
+		$name = $this->reflection->getName();
+		$lowercaseName = strtolower($name);
+		if ($lowercaseName === $name) {
+			if (PHP_VERSION_ID >= 80000) {
+				return $name;
+			}
+
+			// fix for https://bugs.php.net/bug.php?id=74939
+			foreach ($this->getDeclaringClass()->getNativeReflection()->getTraitAliases() as $traitTarget) {
+				$correctName = $this->getMethodNameWithCorrectCase($name, $traitTarget);
+				if ($correctName !== null) {
+					$name = $correctName;
+					break;
+				}
+			}
+		}
+
+		return $name;
+	}
+
+	private function getMethodNameWithCorrectCase(string $lowercaseMethodName, string $traitTarget): ?string
+	{
+		$trait = explode('::', $traitTarget)[0];
+		$traitReflection = $this->reflectionProvider->getClass($trait)->getNativeReflection();
+		foreach ($traitReflection->getTraitAliases() as $methodAlias => $aliasTraitTarget) {
+			if ($lowercaseMethodName === strtolower($methodAlias)) {
+				return $methodAlias;
+			}
+
+			$correctName = $this->getMethodNameWithCorrectCase($lowercaseMethodName, $aliasTraitTarget);
+			if ($correctName !== null) {
+				return $correctName;
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return list<ExtendedParametersAcceptor>
+	 */
+	public function getVariants(): array
+	{
+		if ($this->variants === null) {
+			$this->variants = [
+				new ExtendedFunctionVariant(
+					$this->templateTypeMap,
+					null,
+					$this->getParameters(),
+					$this->isVariadic(),
+					$this->getReturnType(),
+					$this->getPhpDocReturnType(),
+					$this->getNativeReturnType(),
+				),
+			];
+		}
+
+		return $this->variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	/**
+	 * @return list<ExtendedParameterReflection>
+	 */
+	private function getParameters(): array
+	{
+		if ($this->parameters === null) {
+			$this->parameters = array_map(fn (ReflectionParameter $reflection): PhpParameterReflection => new PhpParameterReflection(
+				$this->initializerExprTypeResolver,
+				$reflection,
+				$this->phpDocParameterTypes[$reflection->getName()] ?? null,
+				$this->getDeclaringClass(),
+				$this->phpDocParameterOutTypes[$reflection->getName()] ?? null,
+				$this->immediatelyInvokedCallableParameters[$reflection->getName()] ?? TrinaryLogic::createMaybe(),
+				$this->phpDocClosureThisTypeParameters[$reflection->getName()] ?? null,
+				$this->attributeReflectionFactory->fromNativeReflection($reflection->getAttributes(), InitializerExprContext::fromReflectionParameter($reflection)),
+			), $this->reflection->getParameters());
+		}
+
+		return $this->parameters;
+	}
+
+	private function isVariadic(): bool
+	{
+		$isNativelyVariadic = $this->reflection->isVariadic();
+		$declaringClass = $this->declaringClass;
+		$filename = $this->declaringClass->getFileName();
+		if ($this->declaringTrait !== null) {
+			$declaringClass = $this->declaringTrait;
+			$filename = $this->declaringTrait->getFileName();
+		}
+
+		if (!$isNativelyVariadic && $filename !== null && !$this->declaringClass->isBuiltin()) {
+			if ($this->containsVariadicCalls !== null) {
+				return $this->containsVariadicCalls;
+			}
+
+			$className = $declaringClass->getName();
+			if ($declaringClass->isAnonymous()) {
+				$className = sprintf('%s:%s:%s', VariadicMethodsVisitor::ANONYMOUS_CLASS_PREFIX, $declaringClass->getNativeReflection()->getStartLine(), $declaringClass->getNativeReflection()->getEndLine());
+			}
+			if (array_key_exists($className, VariadicMethodsVisitor::$cache)) {
+				if (array_key_exists($this->reflection->getName(), VariadicMethodsVisitor::$cache[$className])) {
+					return $this->containsVariadicCalls = VariadicMethodsVisitor::$cache[$className][$this->reflection->getName()];
+				}
+
+				return $this->containsVariadicCalls = false;
+			}
+
+			$nodes = $this->parser->parseFile($filename);
+			if (count($nodes) > 0) {
+				$variadicMethods = $nodes[0]->getAttribute(VariadicMethodsVisitor::ATTRIBUTE_NAME);
+
+				if (
+					is_array($variadicMethods)
+					&& array_key_exists($className, $variadicMethods)
+					&& array_key_exists($this->reflection->getName(), $variadicMethods[$className])
+				) {
+					return $this->containsVariadicCalls = $variadicMethods[$className][$this->reflection->getName()];
+				}
+			}
+
+			return $this->containsVariadicCalls = false;
+		}
+
+		return $isNativelyVariadic;
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	private function getReturnType(): Type
+	{
+		if ($this->returnType === null) {
+			$name = strtolower($this->getName());
+			$returnType = $this->reflection->getReturnType();
+			if ($returnType === null) {
+				if (in_array($name, ['__construct', '__destruct', '__unset', '__wakeup', '__clone'], true)) {
+					return $this->returnType = TypehintHelper::decideType(new VoidType(), $this->phpDocReturnType);
+				}
+				if ($name === '__tostring') {
+					return $this->returnType = TypehintHelper::decideType(new StringType(), $this->phpDocReturnType);
+				}
+				if ($name === '__isset') {
+					return $this->returnType = TypehintHelper::decideType(new BooleanType(), $this->phpDocReturnType);
+				}
+				if ($name === '__sleep') {
+					return $this->returnType = TypehintHelper::decideType(new ArrayType(new IntegerType(), new StringType()), $this->phpDocReturnType);
+				}
+				if ($name === '__set_state') {
+					return $this->returnType = TypehintHelper::decideType(new ObjectWithoutClassType(), $this->phpDocReturnType);
+				}
+			}
+
+			$this->returnType = TypehintHelper::decideTypeFromReflection(
+				$returnType,
+				$this->phpDocReturnType,
+				$this->declaringClass,
+			);
+		}
+
+		return $this->returnType;
+	}
+
+	private function getPhpDocReturnType(): Type
+	{
+		if ($this->phpDocReturnType !== null) {
+			return $this->phpDocReturnType;
+		}
+
+		return new MixedType();
+	}
+
+	private function getNativeReturnType(): Type
+	{
+		if ($this->nativeReturnType === null) {
+			$this->nativeReturnType = TypehintHelper::decideTypeFromReflection(
+				$this->reflection->getReturnType(),
+				null,
+				$this->declaringClass,
+			);
+		}
+
+		return $this->nativeReturnType;
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->isDeprecated) {
+			return $this->deprecatedDescription;
+		}
+
+		if ($this->reflection->isDeprecated()) {
+			$attributes = $this->reflection->getBetterReflection()->getAttributes();
+			return DeprecatedAttributeHelper::getDeprecatedDescription($attributes);
+		}
+
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		if ($this->isDeprecated) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createFromBoolean($this->reflection->isDeprecated());
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isInternal || $this->reflection->isInternal());
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isFinal || $this->reflection->isFinal());
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isFinal());
+	}
+
+	public function isAbstract(): bool
+	{
+		return $this->reflection->isAbstract();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->phpDocThrowType;
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		if (
+			strtolower($this->getName()) !== '__construct'
+			&& $this->getReturnType()->isVoid()->yes()
+		) {
+			return TrinaryLogic::createYes();
+		}
+		if ($this->isPure !== null) {
+			return TrinaryLogic::createFromBoolean(!$this->isPure);
+		}
+
+		if ((new ThisType($this->declaringClass))->isSuperTypeOf($this->getReturnType())->yes()) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->asserts;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(
+			$this->declaringClass->acceptsNamedArguments() && $this->acceptsNamedArguments,
+		);
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return $this->selfOutType;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->phpDocComment;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->returnsReference());
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		if ($this->isPure === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createFromBoolean($this->isPure);
+	}
+
+	public function changePropertyGetHookPhpDocType(Type $phpDocType): self
+	{
+		return new self(
+			$this->initializerExprTypeResolver,
+			$this->declaringClass,
+			$this->declaringTrait,
+			$this->reflection,
+			$this->reflectionProvider,
+			$this->attributeReflectionFactory,
+			$this->parser,
+			$this->templateTypeMap,
+			$this->phpDocParameterTypes,
+			$phpDocType,
+			$this->phpDocThrowType,
+			$this->deprecatedDescription,
+			$this->isDeprecated,
+			$this->isInternal,
+			$this->isFinal,
+			$this->isPure,
+			$this->asserts,
+			$this->acceptsNamedArguments,
+			$this->selfOutType,
+			$this->phpDocComment,
+			$this->phpDocParameterOutTypes,
+			$this->immediatelyInvokedCallableParameters,
+			$this->phpDocClosureThisTypeParameters,
+			$this->attributes,
+		);
+	}
+
+	public function changePropertySetHookPhpDocType(string $parameterName, Type $phpDocType): self
+	{
+		$phpDocParameterTypes = $this->phpDocParameterTypes;
+		$phpDocParameterTypes[$parameterName] = $phpDocType;
+
+		return new self(
+			$this->initializerExprTypeResolver,
+			$this->declaringClass,
+			$this->declaringTrait,
+			$this->reflection,
+			$this->reflectionProvider,
+			$this->attributeReflectionFactory,
+			$this->parser,
+			$this->templateTypeMap,
+			$phpDocParameterTypes,
+			$this->phpDocReturnType,
+			$this->phpDocThrowType,
+			$this->deprecatedDescription,
+			$this->isDeprecated,
+			$this->isInternal,
+			$this->isFinal,
+			$this->isPure,
+			$this->asserts,
+			$this->acceptsNamedArguments,
+			$this->selfOutType,
+			$this->phpDocComment,
+			$this->phpDocParameterOutTypes,
+			$this->immediatelyInvokedCallableParameters,
+			$this->phpDocClosureThisTypeParameters,
+			$this->attributes,
+		);
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpMethodReflectionFactory.php b/src/Reflection/Php/PhpMethodReflectionFactory.php
new file mode 100644
index 00000000..f98d7f35
--- /dev/null
+++ b/src/Reflection/Php/PhpMethodReflectionFactory.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Type;
+
+interface PhpMethodReflectionFactory
+{
+
+	/**
+	 * @param Type[] $phpDocParameterTypes
+	 * @param Type[] $phpDocParameterOutTypes
+	 * @param array<string, TrinaryLogic> $immediatelyInvokedCallableParameters
+	 * @param array<string, Type> $phpDocClosureThisTypeParameters
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function create(
+		ClassReflection $declaringClass,
+		?ClassReflection $declaringTrait,
+		ReflectionMethod $reflection,
+		TemplateTypeMap $templateTypeMap,
+		array $phpDocParameterTypes,
+		?Type $phpDocReturnType,
+		?Type $phpDocThrowType,
+		?string $deprecatedDescription,
+		bool $isDeprecated,
+		bool $isInternal,
+		bool $isFinal,
+		?bool $isPure,
+		Assertions $asserts,
+		?Type $selfOutType,
+		?string $phpDocComment,
+		array $phpDocParameterOutTypes,
+		array $immediatelyInvokedCallableParameters,
+		array $phpDocClosureThisTypeParameters,
+		bool $acceptsNamedArguments,
+		array $attributes,
+	): PhpMethodReflection;
+
+}
diff --git a/src/Reflection/Php/PhpParameterFromParserNodeReflection.php b/src/Reflection/Php/PhpParameterFromParserNodeReflection.php
new file mode 100644
index 00000000..87378a48
--- /dev/null
+++ b/src/Reflection/Php/PhpParameterFromParserNodeReflection.php
@@ -0,0 +1,117 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypehintHelper;
+
+final class PhpParameterFromParserNodeReflection implements ExtendedParameterReflection
+{
+
+	private ?Type $type = null;
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private string $name,
+		private bool $optional,
+		private Type $realType,
+		private ?Type $phpDocType,
+		private PassedByReference $passedByReference,
+		private ?Type $defaultValue,
+		private bool $variadic,
+		private ?Type $outType,
+		private TrinaryLogic $immediatelyInvokedCallable,
+		private ?Type $closureThisType,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->optional;
+	}
+
+	public function getType(): Type
+	{
+		if ($this->type === null) {
+			$phpDocType = $this->phpDocType;
+			if ($phpDocType !== null && $this->defaultValue !== null) {
+				if ($this->defaultValue->isNull()->yes()) {
+					$inferred = $phpDocType->inferTemplateTypes($this->defaultValue);
+					if ($inferred->isEmpty()) {
+						$phpDocType = TypeCombinator::addNull($phpDocType);
+					}
+				}
+			}
+			$this->type = TypehintHelper::decideType($this->realType, $phpDocType);
+		}
+
+		return $this->type;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->phpDocType ?? new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return !$this->realType instanceof MixedType || $this->realType->isExplicitMixed();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->realType;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+	public function getOutType(): ?Type
+	{
+		return $this->outType;
+	}
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic
+	{
+		return $this->immediatelyInvokedCallable;
+	}
+
+	public function getClosureThisType(): ?Type
+	{
+		return $this->closureThisType;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpParameterReflection.php b/src/Reflection/Php/PhpParameterReflection.php
new file mode 100644
index 00000000..f9117531
--- /dev/null
+++ b/src/Reflection/Php/PhpParameterReflection.php
@@ -0,0 +1,152 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypehintHelper;
+
+final class PhpParameterReflection implements ExtendedParameterReflection
+{
+
+	private ?Type $type = null;
+
+	private ?Type $nativeType = null;
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionParameter $reflection,
+		private ?Type $phpDocType,
+		private ?ClassReflection $declaringClass,
+		private ?Type $outType,
+		private TrinaryLogic $immediatelyInvokedCallable,
+		private ?Type $closureThisType,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->reflection->isOptional();
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getType(): Type
+	{
+		if ($this->type === null) {
+			$phpDocType = $this->phpDocType;
+			if (
+				$phpDocType !== null
+				&& $this->reflection->isDefaultValueAvailable()
+			) {
+				$defaultValueType = $this->initializerExprTypeResolver->getType(
+					$this->reflection->getDefaultValueExpression(),
+					InitializerExprContext::fromReflectionParameter($this->reflection),
+				);
+				if ($defaultValueType->isNull()->yes()) {
+					$phpDocType = TypeCombinator::addNull($phpDocType);
+				}
+			}
+
+			$this->type = TypehintHelper::decideTypeFromReflection(
+				$this->reflection->getType(),
+				$phpDocType,
+				$this->declaringClass,
+				$this->isVariadic(),
+			);
+		}
+
+		return $this->type;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->reflection->isPassedByReference()
+			? PassedByReference::createCreatesNewVariable()
+			: PassedByReference::createNo();
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->reflection->isVariadic();
+	}
+
+	public function getPhpDocType(): Type
+	{
+		if ($this->phpDocType !== null) {
+			return $this->phpDocType;
+		}
+
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->reflection->getType() !== null;
+	}
+
+	public function getNativeType(): Type
+	{
+		if ($this->nativeType === null) {
+			$this->nativeType = TypehintHelper::decideTypeFromReflection(
+				$this->reflection->getType(),
+				null,
+				$this->declaringClass,
+				$this->isVariadic(),
+			);
+		}
+
+		return $this->nativeType;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		if ($this->reflection->isDefaultValueAvailable()) {
+			return $this->initializerExprTypeResolver->getType(
+				$this->reflection->getDefaultValueExpression(),
+				InitializerExprContext::fromReflectionParameter($this->reflection),
+			);
+		}
+
+		return null;
+	}
+
+	public function getOutType(): ?Type
+	{
+		return $this->outType;
+	}
+
+	public function isImmediatelyInvokedCallable(): TrinaryLogic
+	{
+		return $this->immediatelyInvokedCallable;
+	}
+
+	public function getClosureThisType(): ?Type
+	{
+		return $this->closureThisType;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/PhpPropertyReflection.php b/src/Reflection/Php/PhpPropertyReflection.php
new file mode 100644
index 00000000..d3fe5a06
--- /dev/null
+++ b/src/Reflection/Php/PhpPropertyReflection.php
@@ -0,0 +1,292 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionProperty;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType;
+use PHPStan\Reflection\AttributeReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\MissingMethodFromReflectionException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class PhpPropertyReflection implements ExtendedPropertyReflection
+{
+
+	private ?Type $finalNativeType = null;
+
+	private ?Type $type = null;
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private ?ClassReflection $declaringTrait,
+		private ReflectionUnionType|ReflectionNamedType|ReflectionIntersectionType|null $nativeType,
+		private ?Type $phpDocType,
+		private ReflectionProperty $reflection,
+		private ?ExtendedMethodReflection $getHook,
+		private ?ExtendedMethodReflection $setHook,
+		private ?string $deprecatedDescription,
+		private bool $isDeprecated,
+		private bool $isInternal,
+		private bool $isReadOnlyByPhpDoc,
+		private bool $isAllowedPrivateMutation,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function getDeclaringTrait(): ?ClassReflection
+	{
+		return $this->declaringTrait;
+	}
+
+	public function getDocComment(): ?string
+	{
+		$docComment = $this->reflection->getDocComment();
+		if ($docComment === false) {
+			return null;
+		}
+
+		return $docComment;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function isReadOnly(): bool
+	{
+		return $this->reflection->isReadOnly();
+	}
+
+	public function isReadOnlyByPhpDoc(): bool
+	{
+		return $this->isReadOnlyByPhpDoc;
+	}
+
+	public function getReadableType(): Type
+	{
+		if ($this->type === null) {
+			$this->type = TypehintHelper::decideTypeFromReflection(
+				$this->nativeType,
+				$this->phpDocType,
+				$this->declaringClass,
+			);
+		}
+
+		return $this->type;
+	}
+
+	public function getWritableType(): Type
+	{
+		if ($this->hasHook('set')) {
+			$setHookVariant = $this->getHook('set')->getOnlyVariant();
+			$parameters = $setHookVariant->getParameters();
+			if (isset($parameters[0])) {
+				return $parameters[0]->getType();
+			}
+		}
+
+		return $this->getReadableType();
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		if ($this->isStatic()) {
+			return true;
+		}
+
+		if ($this->isVirtual()->yes()) {
+			return false;
+		}
+
+		if ($this->hasHook('get')) {
+			return false;
+		}
+
+		if ($this->hasHook('set')) {
+			return false;
+		}
+
+		return true;
+	}
+
+	public function isPromoted(): bool
+	{
+		return $this->reflection->isPromoted();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->phpDocType !== null;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		if ($this->phpDocType !== null) {
+			return $this->phpDocType;
+		}
+
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->nativeType !== null;
+	}
+
+	public function getNativeType(): Type
+	{
+		if ($this->finalNativeType === null) {
+			$this->finalNativeType = TypehintHelper::decideTypeFromReflection(
+				$this->nativeType,
+				null,
+				$this->declaringClass,
+			);
+		}
+
+		return $this->finalNativeType;
+	}
+
+	public function isReadable(): bool
+	{
+		if ($this->isStatic()) {
+			return true;
+		}
+
+		if (!$this->isVirtual()->yes()) {
+			return true;
+		}
+
+		return $this->hasHook('get');
+	}
+
+	public function isWritable(): bool
+	{
+		if ($this->isStatic()) {
+			return true;
+		}
+
+		if (!$this->isVirtual()->yes()) {
+			return true;
+		}
+
+		return $this->hasHook('set');
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->isDeprecated) {
+			return $this->deprecatedDescription;
+		}
+
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isDeprecated);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isInternal);
+	}
+
+	public function isAllowedPrivateMutation(): bool
+	{
+		return $this->isAllowedPrivateMutation;
+	}
+
+	public function getNativeReflection(): ReflectionProperty
+	{
+		return $this->reflection;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isAbstract());
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isFinal());
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->reflection->isVirtual());
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		if ($hookType === 'get') {
+			return $this->getHook !== null;
+		}
+
+		return $this->setHook !== null;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		if ($hookType === 'get') {
+			if ($this->getHook === null) {
+				throw new MissingMethodFromReflectionException($this->declaringClass->getName(), sprintf('$%s::get', $this->reflection->getName()));
+			}
+
+			return $this->getHook;
+		}
+
+		if ($this->setHook === null) {
+			throw new MissingMethodFromReflectionException($this->declaringClass->getName(), sprintf('$%s::set', $this->reflection->getName()));
+		}
+
+		return $this->setHook;
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->reflection->isProtectedSet();
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->reflection->isPrivateSet();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/Php/SimpleXMLElementProperty.php b/src/Reflection/Php/SimpleXMLElementProperty.php
new file mode 100644
index 00000000..2eba011f
--- /dev/null
+++ b/src/Reflection/Php/SimpleXMLElementProperty.php
@@ -0,0 +1,160 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class SimpleXMLElementProperty implements ExtendedPropertyReflection
+{
+
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private Type $type,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getWritableType(): Type
+	{
+		return TypeCombinator::union(
+			$this->type,
+			new IntegerType(),
+			new FloatType(),
+			new StringType(),
+			new BooleanType(),
+		);
+	}
+
+	public function isReadable(): bool
+	{
+		return true;
+	}
+
+	public function isWritable(): bool
+	{
+		return true;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return false;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Php/Soap/SoapClientMethodReflection.php b/src/Reflection/Php/Soap/SoapClientMethodReflection.php
new file mode 100644
index 00000000..0ce28703
--- /dev/null
+++ b/src/Reflection/Php/Soap/SoapClientMethodReflection.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Reflection\Php\Soap;
+return;
+
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\FunctionVariant;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+
+final class SoapClientMethodReflection implements MethodReflection
+{
+
+	public function __construct(private ClassReflection $declaringClass, private string $name)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function getVariants(): array
+	{
+		return [
+			new FunctionVariant(
+				TemplateTypeMap::createEmpty(),
+				TemplateTypeMap::createEmpty(),
+				[],
+				true,
+				new MixedType(true),
+			),
+		];
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getThrowType(): Type
+	{
+		return new ObjectType('SoapFault');
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+}
diff --git a/src/Reflection/Php/Soap/SoapClientMethodsClassReflectionExtension.php b/src/Reflection/Php/Soap/SoapClientMethodsClassReflectionExtension.php
new file mode 100644
index 00000000..ce0e6ee2
--- /dev/null
+++ b/src/Reflection/Php/Soap/SoapClientMethodsClassReflectionExtension.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Reflection\Php\Soap;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\MethodsClassReflectionExtension;
+
+final class SoapClientMethodsClassReflectionExtension implements MethodsClassReflectionExtension
+{
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		return $classReflection->getName() === 'SoapClient' || $classReflection->isSubclassOf('SoapClient');
+	}
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): MethodReflection
+	{
+		return new SoapClientMethodReflection($classReflection, $methodName);
+	}
+
+}
diff --git a/src/Reflection/Php/UniversalObjectCrateProperty.php b/src/Reflection/Php/UniversalObjectCrateProperty.php
new file mode 100644
index 00000000..f63ded02
--- /dev/null
+++ b/src/Reflection/Php/UniversalObjectCrateProperty.php
@@ -0,0 +1,150 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class UniversalObjectCrateProperty implements ExtendedPropertyReflection
+{
+
+	public function __construct(
+		private ClassReflection $declaringClass,
+		private Type $readableType,
+		private Type $writableType,
+	)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->readableType;
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->writableType;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return true;
+	}
+
+	public function isReadable(): bool
+	{
+		return true;
+	}
+
+	public function isWritable(): bool
+	{
+		return true;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/Php/UniversalObjectCratesClassReflectionExtension.php b/src/Reflection/Php/UniversalObjectCratesClassReflectionExtension.php
new file mode 100644
index 00000000..9dd7c3b2
--- /dev/null
+++ b/src/Reflection/Php/UniversalObjectCratesClassReflectionExtension.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Reflection\Php;
+return;
+
+use PHPStan\Reflection\Annotations\AnnotationsPropertiesClassReflectionExtension;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\MixedType;
+
+final class UniversalObjectCratesClassReflectionExtension
+	implements PropertiesClassReflectionExtension
+{
+
+	/**
+	 * @param list<string> $classes
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private array $classes,
+		private AnnotationsPropertiesClassReflectionExtension $annotationClassReflection,
+	)
+	{
+	}
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		return self::isUniversalObjectCrateImplementation(
+			$this->reflectionProvider,
+			$this->classes,
+			$classReflection,
+		);
+	}
+
+	public static function isUniversalObjectCrate(
+		ReflectionProvider $reflectionProvider,
+		ClassReflection $classReflection,
+	): bool
+	{
+		return self::isUniversalObjectCrateImplementation(
+			$reflectionProvider,
+			$reflectionProvider->getUniversalObjectCratesClasses(),
+			$classReflection,
+		);
+	}
+
+	/**
+	 * @param list<string> $classes
+	 */
+	private static function isUniversalObjectCrateImplementation(
+		ReflectionProvider $reflectionProvider,
+		array $classes,
+		ClassReflection $classReflection,
+	): bool
+	{
+		foreach ($classes as $className) {
+			if (!$reflectionProvider->hasClass($className)) {
+				continue;
+			}
+
+			if (
+				$classReflection->getName() === $className
+				|| $classReflection->isSubclassOf($className)
+			) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): PropertyReflection
+	{
+		if ($this->annotationClassReflection->hasProperty($classReflection, $propertyName)) {
+			return $this->annotationClassReflection->getProperty($classReflection, $propertyName);
+		}
+
+		if ($classReflection->hasNativeMethod('__get')) {
+			$readableType = $classReflection->getNativeMethod('__get')->getOnlyVariant()->getReturnType();
+		} else {
+			$readableType = new MixedType();
+		}
+
+		if ($classReflection->hasNativeMethod('__set')) {
+			$writableType = $classReflection->getNativeMethod('__set')->getOnlyVariant()->getParameters()[1]->getType();
+		} else {
+			$writableType = new MixedType();
+		}
+
+		return new UniversalObjectCrateProperty($classReflection, $readableType, $writableType);
+	}
+
+}
diff --git a/src/Reflection/PhpVersionStaticAccessor.php b/src/Reflection/PhpVersionStaticAccessor.php
new file mode 100644
index 00000000..e21e6cc9
--- /dev/null
+++ b/src/Reflection/PhpVersionStaticAccessor.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\ShouldNotHappenException;
+
+final class PhpVersionStaticAccessor
+{
+
+	private static ?PhpVersion $instance = null;
+
+	private function __construct()
+	{
+	}
+
+	public static function registerInstance(PhpVersion $phpVersion): void
+	{
+		self::$instance = $phpVersion;
+	}
+
+	public static function getInstance(): PhpVersion
+	{
+		if (self::$instance === null) {
+			throw new ShouldNotHappenException();
+		}
+		return self::$instance;
+	}
+
+}
diff --git a/src/Reflection/PropertiesClassReflectionExtension.php b/src/Reflection/PropertiesClassReflectionExtension.php
new file mode 100644
index 00000000..f8b218b2
--- /dev/null
+++ b/src/Reflection/PropertiesClassReflectionExtension.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+/**
+ * This is the interface custom properties class reflection extensions implement.
+ *
+ * To register it in the configuration file use the `phpstan.broker.propertiesClassReflectionExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyPropertiesClassReflectionExtension
+ *		tags:
+ *			- phpstan.broker.propertiesClassReflectionExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/class-reflection-extensions
+ *
+ * @api
+ */
+interface PropertiesClassReflectionExtension
+{
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool;
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): PropertyReflection;
+
+}
diff --git a/src/Reflection/PropertyReflection.php b/src/Reflection/PropertyReflection.php
new file mode 100644
index 00000000..09d07685
--- /dev/null
+++ b/src/Reflection/PropertyReflection.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/** @api */
+interface PropertyReflection extends ClassMemberReflection
+{
+
+	public function getReadableType(): Type;
+
+	public function getWritableType(): Type;
+
+	public function canChangeTypeAfterAssignment(): bool;
+
+	public function isReadable(): bool;
+
+	public function isWritable(): bool;
+
+	public function isDeprecated(): TrinaryLogic;
+
+	public function getDeprecatedDescription(): ?string;
+
+	public function isInternal(): TrinaryLogic;
+
+}
diff --git a/src/Reflection/RealClassClassConstantReflection.php b/src/Reflection/RealClassClassConstantReflection.php
new file mode 100644
index 00000000..6d8a033c
--- /dev/null
+++ b/src/Reflection/RealClassClassConstantReflection.php
@@ -0,0 +1,157 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClassConstant;
+use PHPStan\Internal\DeprecatedAttributeHelper;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+
+final class RealClassClassConstantReflection implements ClassConstantReflection
+{
+
+	private ?Type $valueType = null;
+
+	/**
+	 * @param list<AttributeReflection> $attributes
+	 */
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ClassReflection $declaringClass,
+		private ReflectionClassConstant $reflection,
+		private ?Type $nativeType,
+		private ?Type $phpDocType,
+		private ?string $deprecatedDescription,
+		private bool $isDeprecated,
+		private bool $isInternal,
+		private bool $isFinal,
+		private array $attributes,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getFileName(): ?string
+	{
+		return $this->declaringClass->getFileName();
+	}
+
+	public function getValueExpr(): Expr
+	{
+		return $this->reflection->getValueExpression();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->phpDocType !== null;
+	}
+
+	public function getPhpDocType(): ?Type
+	{
+		return $this->phpDocType;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->nativeType !== null;
+	}
+
+	public function getNativeType(): ?Type
+	{
+		return $this->nativeType;
+	}
+
+	public function getValueType(): Type
+	{
+		if ($this->valueType === null) {
+			if ($this->phpDocType !== null) {
+				if ($this->nativeType !== null) {
+					return $this->valueType = TypehintHelper::decideType(
+						$this->nativeType,
+						$this->phpDocType,
+					);
+				}
+
+				return $this->phpDocType;
+			} elseif ($this->nativeType !== null) {
+				return $this->nativeType;
+			}
+
+			$this->valueType = $this->initializerExprTypeResolver->getType($this->getValueExpr(), InitializerExprContext::fromClassReflection($this->declaringClass));
+		}
+
+		return $this->valueType;
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->declaringClass;
+	}
+
+	public function isStatic(): bool
+	{
+		return true;
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function isFinal(): bool
+	{
+		return $this->isFinal || $this->reflection->isFinal();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isDeprecated || $this->reflection->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		if ($this->isDeprecated) {
+			return $this->deprecatedDescription;
+		}
+
+		if ($this->reflection->isDeprecated()) {
+			$attributes = $this->reflection->getBetterReflection()->getAttributes();
+			return DeprecatedAttributeHelper::getDeprecatedDescription($attributes);
+		}
+
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->isInternal);
+	}
+
+	public function getDocComment(): ?string
+	{
+		$docComment = $this->reflection->getDocComment();
+		if ($docComment === false) {
+			return null;
+		}
+
+		return $docComment;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->attributes;
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider.php b/src/Reflection/ReflectionProvider.php
new file mode 100644
index 00000000..9515f89d
--- /dev/null
+++ b/src/Reflection/ReflectionProvider.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+
+/** @api */
+interface ReflectionProvider
+{
+
+	/** @phpstan-assert-if-true =class-string $className */
+	public function hasClass(string $className): bool;
+
+	public function getClass(string $className): ClassReflection;
+
+	public function getClassName(string $className): string;
+
+	public function getAnonymousClassReflection(
+		Node\Stmt\Class_ $classNode,
+		Scope $scope,
+	): ClassReflection;
+
+	/** @return list<string> */
+	public function getUniversalObjectCratesClasses(): array;
+
+	public function hasFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool;
+
+	public function getFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): FunctionReflection;
+
+	public function resolveFunctionName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string;
+
+	public function hasConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool;
+
+	public function getConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ConstantReflection;
+
+	public function resolveConstantName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string;
+
+}
diff --git a/src/Reflection/ReflectionProvider/DirectReflectionProviderProvider.php b/src/Reflection/ReflectionProvider/DirectReflectionProviderProvider.php
new file mode 100644
index 00000000..13680819
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/DirectReflectionProviderProvider.php
@@ -0,0 +1,20 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+
+final class DirectReflectionProviderProvider implements ReflectionProviderProvider
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProvider;
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider/DummyReflectionProvider.php b/src/Reflection/ReflectionProvider/DummyReflectionProvider.php
new file mode 100644
index 00000000..0eaafc78
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/DummyReflectionProvider.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ConstantReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+
+final class DummyReflectionProvider implements ReflectionProvider
+{
+
+	public function hasClass(string $className): bool
+	{
+		return false;
+	}
+
+	public function getClass(string $className): ClassReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getClassName(string $className): string
+	{
+		return $className;
+	}
+
+	public function getAnonymousClassReflection(Node\Stmt\Class_ $classNode, Scope $scope): ClassReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUniversalObjectCratesClasses(): array
+	{
+		return [];
+	}
+
+	public function hasFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return false;
+	}
+
+	public function getFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): FunctionReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function resolveFunctionName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		return null;
+	}
+
+	public function hasConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return false;
+	}
+
+	public function getConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ConstantReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function resolveConstantName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		return null;
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider/LazyReflectionProviderProvider.php b/src/Reflection/ReflectionProvider/LazyReflectionProviderProvider.php
new file mode 100644
index 00000000..40c4c6e3
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/LazyReflectionProviderProvider.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Reflection\ReflectionProvider;
+
+final class LazyReflectionProviderProvider implements ReflectionProviderProvider
+{
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->container->getByType(ReflectionProvider::class);
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider/MemoizingReflectionProvider.php b/src/Reflection/ReflectionProvider/MemoizingReflectionProvider.php
new file mode 100644
index 00000000..807d7b0e
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/MemoizingReflectionProvider.php
@@ -0,0 +1,100 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ConstantReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\ReflectionProvider;
+use function strtolower;
+
+final class MemoizingReflectionProvider implements ReflectionProvider
+{
+
+	/** @var array<string, bool> */
+	private array $hasClasses = [];
+
+	/** @var array<string, ClassReflection> */
+	private array $classes = [];
+
+	/** @var array<string, string> */
+	private array $classNames = [];
+
+	public function __construct(private ReflectionProvider $provider)
+	{
+	}
+
+	public function hasClass(string $className): bool
+	{
+		if (isset($this->hasClasses[$className])) {
+			return $this->hasClasses[$className];
+		}
+
+		return $this->hasClasses[$className] = $this->provider->hasClass($className);
+	}
+
+	public function getClass(string $className): ClassReflection
+	{
+		$lowerClassName = strtolower($className);
+		if (isset($this->classes[$lowerClassName])) {
+			return $this->classes[$lowerClassName];
+		}
+
+		return $this->classes[$lowerClassName] = $this->provider->getClass($className);
+	}
+
+	public function getClassName(string $className): string
+	{
+		$lowerClassName = strtolower($className);
+		if (isset($this->classNames[$lowerClassName])) {
+			return $this->classNames[$lowerClassName];
+		}
+
+		return $this->classNames[$lowerClassName] = $this->provider->getClassName($className);
+	}
+
+	public function getAnonymousClassReflection(Node\Stmt\Class_ $classNode, Scope $scope): ClassReflection
+	{
+		return $this->provider->getAnonymousClassReflection($classNode, $scope);
+	}
+
+	public function getUniversalObjectCratesClasses(): array
+	{
+		return $this->provider->getUniversalObjectCratesClasses();
+	}
+
+	public function hasFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return $this->provider->hasFunction($nameNode, $namespaceAnswerer);
+	}
+
+	public function getFunction(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): FunctionReflection
+	{
+		return $this->provider->getFunction($nameNode, $namespaceAnswerer);
+	}
+
+	public function resolveFunctionName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		return $this->provider->resolveFunctionName($nameNode, $namespaceAnswerer);
+	}
+
+	public function hasConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): bool
+	{
+		return $this->provider->hasConstant($nameNode, $namespaceAnswerer);
+	}
+
+	public function getConstant(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ConstantReflection
+	{
+		return $this->provider->getConstant($nameNode, $namespaceAnswerer);
+	}
+
+	public function resolveConstantName(Node\Name $nameNode, ?NamespaceAnswerer $namespaceAnswerer): ?string
+	{
+		return $this->provider->resolveConstantName($nameNode, $namespaceAnswerer);
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider/ReflectionProviderFactory.php b/src/Reflection/ReflectionProvider/ReflectionProviderFactory.php
new file mode 100644
index 00000000..4c345309
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/ReflectionProviderFactory.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+
+final class ReflectionProviderFactory
+{
+
+	public function __construct(
+		private ReflectionProvider $staticReflectionProvider,
+	)
+	{
+	}
+
+	public function create(): ReflectionProvider
+	{
+		return new MemoizingReflectionProvider($this->staticReflectionProvider);
+	}
+
+}
diff --git a/src/Reflection/ReflectionProvider/ReflectionProviderProvider.php b/src/Reflection/ReflectionProvider/ReflectionProviderProvider.php
new file mode 100644
index 00000000..a79918e2
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/ReflectionProviderProvider.php
@@ -0,0 +1,13 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+
+interface ReflectionProviderProvider
+{
+
+	public function getReflectionProvider(): ReflectionProvider;
+
+}
diff --git a/src/Reflection/ReflectionProvider/SetterReflectionProviderProvider.php b/src/Reflection/ReflectionProvider/SetterReflectionProviderProvider.php
new file mode 100644
index 00000000..a03d4ad1
--- /dev/null
+++ b/src/Reflection/ReflectionProvider/SetterReflectionProviderProvider.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Reflection\ReflectionProvider;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+
+final class SetterReflectionProviderProvider implements ReflectionProviderProvider
+{
+
+	private ReflectionProvider $reflectionProvider;
+
+	public function setReflectionProvider(ReflectionProvider $reflectionProvider): void
+	{
+		$this->reflectionProvider = $reflectionProvider;
+	}
+
+	public function getReflectionProvider(): ReflectionProvider
+	{
+		return $this->reflectionProvider;
+	}
+
+}
diff --git a/src/Reflection/ReflectionProviderStaticAccessor.php b/src/Reflection/ReflectionProviderStaticAccessor.php
new file mode 100644
index 00000000..3bf5a994
--- /dev/null
+++ b/src/Reflection/ReflectionProviderStaticAccessor.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\ShouldNotHappenException;
+
+final class ReflectionProviderStaticAccessor
+{
+
+	private static ?ReflectionProvider $instance = null;
+
+	private function __construct()
+	{
+	}
+
+	public static function registerInstance(ReflectionProvider $reflectionProvider): void
+	{
+		self::$instance = $reflectionProvider;
+	}
+
+	public static function getInstance(): ReflectionProvider
+	{
+		if (self::$instance === null) {
+			throw new ShouldNotHappenException();
+		}
+		return self::$instance;
+	}
+
+}
diff --git a/src/Reflection/RequireExtension/RequireExtendsMethodsClassReflectionExtension.php b/src/Reflection/RequireExtension/RequireExtendsMethodsClassReflectionExtension.php
new file mode 100644
index 00000000..3255e449
--- /dev/null
+++ b/src/Reflection/RequireExtension/RequireExtendsMethodsClassReflectionExtension.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Reflection\RequireExtension;
+return;
+
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodsClassReflectionExtension;
+use PHPStan\ShouldNotHappenException;
+
+final class RequireExtendsMethodsClassReflectionExtension implements MethodsClassReflectionExtension
+{
+
+	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
+	{
+		return $this->findMethod($classReflection, $methodName) !== null;
+	}
+
+	public function getMethod(ClassReflection $classReflection, string $methodName): ExtendedMethodReflection
+	{
+		$method = $this->findMethod($classReflection, $methodName);
+		if ($method === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $method;
+	}
+
+	private function findMethod(ClassReflection $classReflection, string $methodName): ?ExtendedMethodReflection
+	{
+		if (!$classReflection->isInterface()) {
+			return null;
+		}
+
+		$extendsTags = $classReflection->getRequireExtendsTags();
+		foreach ($extendsTags as $extendsTag) {
+			$type = $extendsTag->getType();
+
+			if (!$type->hasMethod($methodName)->yes()) {
+				continue;
+			}
+
+			return $type->getMethod($methodName, new OutOfClassScope());
+		}
+
+		$interfaces = $classReflection->getInterfaces();
+		foreach ($interfaces as $interface) {
+			$method = $this->findMethod($interface, $methodName);
+			if ($method !== null) {
+				return $method;
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/RequireExtension/RequireExtendsPropertiesClassReflectionExtension.php b/src/Reflection/RequireExtension/RequireExtendsPropertiesClassReflectionExtension.php
new file mode 100644
index 00000000..9d13391b
--- /dev/null
+++ b/src/Reflection/RequireExtension/RequireExtendsPropertiesClassReflectionExtension.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Reflection\RequireExtension;
+return;
+
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\ShouldNotHappenException;
+
+final class RequireExtendsPropertiesClassReflectionExtension implements PropertiesClassReflectionExtension
+{
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		return $this->findProperty($classReflection, $propertyName) !== null;
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): ExtendedPropertyReflection
+	{
+		$property = $this->findProperty($classReflection, $propertyName);
+		if ($property === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $property;
+	}
+
+	private function findProperty(ClassReflection $classReflection, string $propertyName): ?ExtendedPropertyReflection
+	{
+		if (!$classReflection->isInterface()) {
+			return null;
+		}
+
+		$requireExtendsTags = $classReflection->getRequireExtendsTags();
+		foreach ($requireExtendsTags as $requireExtendsTag) {
+			$type = $requireExtendsTag->getType();
+
+			if (!$type->hasProperty($propertyName)->yes()) {
+				continue;
+			}
+
+			return $type->getProperty($propertyName, new OutOfClassScope());
+		}
+
+		$interfaces = $classReflection->getInterfaces();
+		foreach ($interfaces as $interface) {
+			$property = $this->findProperty($interface, $propertyName);
+			if ($property !== null) {
+				return $property;
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/ResolvedFunctionVariant.php b/src/Reflection/ResolvedFunctionVariant.php
new file mode 100644
index 00000000..76168505
--- /dev/null
+++ b/src/Reflection/ResolvedFunctionVariant.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Type\Type;
+
+interface ResolvedFunctionVariant extends ExtendedParametersAcceptor
+{
+
+	public function getOriginalParametersAcceptor(): ParametersAcceptor;
+
+	public function getReturnTypeWithUnresolvableTemplateTypes(): Type;
+
+	public function getPhpDocReturnTypeWithUnresolvableTemplateTypes(): Type;
+
+}
diff --git a/src/Reflection/ResolvedFunctionVariantWithCallable.php b/src/Reflection/ResolvedFunctionVariantWithCallable.php
new file mode 100644
index 00000000..0f24b56c
--- /dev/null
+++ b/src/Reflection/ResolvedFunctionVariantWithCallable.php
@@ -0,0 +1,121 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+final class ResolvedFunctionVariantWithCallable implements ResolvedFunctionVariant, CallableParametersAcceptor
+{
+
+	/**
+	 * @param SimpleThrowPoint[] $throwPoints
+	 * @param SimpleImpurePoint[] $impurePoints
+	 * @param InvalidateExprNode[] $invalidateExpressions
+	 * @param string[] $usedVariables
+	 */
+	public function __construct(
+		private ResolvedFunctionVariant $parametersAcceptor,
+		private array $throwPoints,
+		private TrinaryLogic $isPure,
+		private array $impurePoints,
+		private array $invalidateExpressions,
+		private array $usedVariables,
+		private TrinaryLogic $acceptsNamedArguments,
+	)
+	{
+	}
+
+	public function getOriginalParametersAcceptor(): ParametersAcceptor
+	{
+		return $this->parametersAcceptor->getOriginalParametersAcceptor();
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->parametersAcceptor->getTemplateTypeMap();
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->parametersAcceptor->getResolvedTemplateTypeMap();
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->parametersAcceptor->getCallSiteVarianceMap();
+	}
+
+	public function getParameters(): array
+	{
+		return $this->parametersAcceptor->getParameters();
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->parametersAcceptor->isVariadic();
+	}
+
+	public function getReturnTypeWithUnresolvableTemplateTypes(): Type
+	{
+		return $this->parametersAcceptor->getReturnTypeWithUnresolvableTemplateTypes();
+	}
+
+	public function getPhpDocReturnTypeWithUnresolvableTemplateTypes(): Type
+	{
+		return $this->parametersAcceptor->getPhpDocReturnTypeWithUnresolvableTemplateTypes();
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->parametersAcceptor->getReturnType();
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		return $this->parametersAcceptor->getPhpDocReturnType();
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->parametersAcceptor->getNativeReturnType();
+	}
+
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->isPure;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return $this->invalidateExpressions;
+	}
+
+	public function getUsedVariables(): array
+	{
+		return $this->usedVariables;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->acceptsNamedArguments;
+	}
+
+}
diff --git a/src/Reflection/ResolvedFunctionVariantWithOriginal.php b/src/Reflection/ResolvedFunctionVariantWithOriginal.php
new file mode 100644
index 00000000..0681bbac
--- /dev/null
+++ b/src/Reflection/ResolvedFunctionVariantWithOriginal.php
@@ -0,0 +1,301 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\NonAcceptingNeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use function array_key_exists;
+use function array_map;
+
+final class ResolvedFunctionVariantWithOriginal implements ResolvedFunctionVariant
+{
+
+	/** @var list<ExtendedParameterReflection>|null */
+	private ?array $parameters = null;
+
+	private ?Type $returnTypeWithUnresolvableTemplateTypes = null;
+
+	private ?Type $phpDocReturnTypeWithUnresolvableTemplateTypes = null;
+
+	private ?Type $returnType = null;
+
+	private ?Type $phpDocReturnType = null;
+
+	/**
+	 * @param array<string, Type> $passedArgs
+	 */
+	public function __construct(
+		private ExtendedParametersAcceptor $parametersAcceptor,
+		private TemplateTypeMap $resolvedTemplateTypeMap,
+		private TemplateTypeVarianceMap $callSiteVarianceMap,
+		private array $passedArgs,
+	)
+	{
+	}
+
+	public function getOriginalParametersAcceptor(): ParametersAcceptor
+	{
+		return $this->parametersAcceptor;
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->parametersAcceptor->getTemplateTypeMap();
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->resolvedTemplateTypeMap;
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->callSiteVarianceMap;
+	}
+
+	public function getParameters(): array
+	{
+		$parameters = $this->parameters;
+
+		if ($parameters === null) {
+			$parameters = array_map(
+				function (ExtendedParameterReflection $param): ExtendedParameterReflection {
+					$paramType = TypeUtils::resolveLateResolvableTypes(
+						TemplateTypeHelper::resolveTemplateTypes(
+							$this->resolveConditionalTypesForParameter($param->getType()),
+							$this->resolvedTemplateTypeMap,
+							$this->callSiteVarianceMap,
+							TemplateTypeVariance::createContravariant(),
+						),
+						false,
+					);
+
+					$paramOutType = $param->getOutType();
+					if ($paramOutType !== null) {
+						$paramOutType = TypeUtils::resolveLateResolvableTypes(
+							TemplateTypeHelper::resolveTemplateTypes(
+								$this->resolveConditionalTypesForParameter($paramOutType),
+								$this->resolvedTemplateTypeMap,
+								$this->callSiteVarianceMap,
+								TemplateTypeVariance::createCovariant(),
+							),
+							false,
+						);
+					}
+
+					$closureThisType = $param->getClosureThisType();
+					if ($closureThisType !== null) {
+						$closureThisType = TypeUtils::resolveLateResolvableTypes(
+							TemplateTypeHelper::resolveTemplateTypes(
+								$this->resolveConditionalTypesForParameter($closureThisType),
+								$this->resolvedTemplateTypeMap,
+								$this->callSiteVarianceMap,
+								TemplateTypeVariance::createCovariant(),
+							),
+							false,
+						);
+					}
+
+					return new ExtendedDummyParameter(
+						$param->getName(),
+						$paramType,
+						$param->isOptional(),
+						$param->passedByReference(),
+						$param->isVariadic(),
+						$param->getDefaultValue(),
+						$param->getNativeType(),
+						$param->getPhpDocType(),
+						$paramOutType,
+						$param->isImmediatelyInvokedCallable(),
+						$closureThisType,
+						$param->getAttributes(),
+					);
+				},
+				$this->parametersAcceptor->getParameters(),
+			);
+
+			$this->parameters = $parameters;
+		}
+
+		return $parameters;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->parametersAcceptor->isVariadic();
+	}
+
+	public function getReturnTypeWithUnresolvableTemplateTypes(): Type
+	{
+		return $this->returnTypeWithUnresolvableTemplateTypes ??=
+			$this->resolveConditionalTypesForParameter(
+				$this->resolveResolvableTemplateTypes($this->parametersAcceptor->getReturnType(), TemplateTypeVariance::createCovariant()),
+			);
+	}
+
+	public function getPhpDocReturnTypeWithUnresolvableTemplateTypes(): Type
+	{
+		return $this->phpDocReturnTypeWithUnresolvableTemplateTypes ??=
+			$this->resolveConditionalTypesForParameter(
+				$this->resolveResolvableTemplateTypes($this->parametersAcceptor->getPhpDocReturnType(), TemplateTypeVariance::createCovariant()),
+			);
+	}
+
+	public function getReturnType(): Type
+	{
+		$type = $this->returnType;
+
+		if ($type === null) {
+			$type = TypeUtils::resolveLateResolvableTypes(
+				TemplateTypeHelper::resolveTemplateTypes(
+					$this->getReturnTypeWithUnresolvableTemplateTypes(),
+					$this->resolvedTemplateTypeMap,
+					$this->callSiteVarianceMap,
+					TemplateTypeVariance::createCovariant(),
+				),
+				false,
+			);
+
+			$this->returnType = $type;
+		}
+
+		return $type;
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		$type = $this->phpDocReturnType;
+
+		if ($type === null) {
+			$type = TypeUtils::resolveLateResolvableTypes(
+				TemplateTypeHelper::resolveTemplateTypes(
+					$this->getPhpDocReturnTypeWithUnresolvableTemplateTypes(),
+					$this->resolvedTemplateTypeMap,
+					$this->callSiteVarianceMap,
+					TemplateTypeVariance::createCovariant(),
+				),
+				false,
+			);
+
+			$this->phpDocReturnType = $type;
+		}
+
+		return $type;
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->parametersAcceptor->getNativeReturnType();
+	}
+
+	private function resolveResolvableTemplateTypes(Type $type, TemplateTypeVariance $positionVariance): Type
+	{
+		$references = $type->getReferencedTemplateTypes($positionVariance);
+
+		$objectCb = function (Type $type, callable $traverse) use ($references): Type {
+			if (
+				$type instanceof TemplateType
+				&& !$type->isArgument()
+				&& $type->getScope()->getFunctionName() !== null
+			) {
+				$newType = $this->resolvedTemplateTypeMap->getType($type->getName());
+				if ($newType === null || $newType instanceof ErrorType) {
+					return $traverse($type);
+				}
+
+				$newType = TemplateTypeHelper::generalizeInferredTemplateType($type, $newType);
+				$variance = TemplateTypeVariance::createInvariant();
+				foreach ($references as $reference) {
+					// this uses identity to distinguish between different occurrences of the same template type
+					// see https://github.com/phpstan/phpstan-src/pull/2485#discussion_r1328555397 for details
+					if ($reference->getType() === $type) {
+						$variance = $reference->getPositionVariance();
+						break;
+					}
+				}
+
+				$callSiteVariance = $this->callSiteVarianceMap->getVariance($type->getName());
+				if ($callSiteVariance === null || $callSiteVariance->invariant()) {
+					return $newType;
+				}
+
+				if (!$callSiteVariance->covariant() && $variance->covariant()) {
+					return $traverse($type->getBound());
+				}
+
+				if (!$callSiteVariance->contravariant() && $variance->contravariant()) {
+					return new NonAcceptingNeverType();
+				}
+
+				return $newType;
+			}
+
+			return $traverse($type);
+		};
+
+		return TypeTraverser::map($type, function (Type $type, callable $traverse) use ($references, $objectCb): Type {
+			if ($type instanceof GenericObjectType || $type instanceof GenericStaticType) {
+				return TypeTraverser::map($type, $objectCb);
+			}
+
+			if ($type instanceof TemplateType && !$type->isArgument()) {
+				$newType = $this->resolvedTemplateTypeMap->getType($type->getName());
+				if ($newType === null || $newType instanceof ErrorType) {
+					return $traverse($type);
+				}
+
+				$variance = TemplateTypeVariance::createInvariant();
+				foreach ($references as $reference) {
+					// this uses identity to distinguish between different occurrences of the same template type
+					// see https://github.com/phpstan/phpstan-src/pull/2485#discussion_r1328555397 for details
+					if ($reference->getType() === $type) {
+						$variance = $reference->getPositionVariance();
+						break;
+					}
+				}
+
+				$callSiteVariance = $this->callSiteVarianceMap->getVariance($type->getName());
+				if ($callSiteVariance === null || $callSiteVariance->invariant()) {
+					return $newType;
+				}
+
+				if (!$callSiteVariance->covariant() && $variance->covariant()) {
+					return $traverse($type->getBound());
+				}
+
+				if (!$callSiteVariance->contravariant() && $variance->contravariant()) {
+					return new NonAcceptingNeverType();
+				}
+
+				return $newType;
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	private function resolveConditionalTypesForParameter(Type $type): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+			if ($type instanceof ConditionalTypeForParameter && array_key_exists($type->getParameterName(), $this->passedArgs)) {
+				$type = $type->toConditional($this->passedArgs[$type->getParameterName()]);
+			}
+
+			return $traverse($type);
+		});
+	}
+
+}
diff --git a/src/Reflection/ResolvedMethodReflection.php b/src/Reflection/ResolvedMethodReflection.php
new file mode 100644
index 00000000..2a87a423
--- /dev/null
+++ b/src/Reflection/ResolvedMethodReflection.php
@@ -0,0 +1,223 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+use function is_bool;
+
+final class ResolvedMethodReflection implements ExtendedMethodReflection
+{
+
+	/** @var list<ExtendedParametersAcceptor>|null */
+	private ?array $variants = null;
+
+	/** @var list<ExtendedParametersAcceptor>|null */
+	private ?array $namedArgumentVariants = null;
+
+	private ?Assertions $asserts = null;
+
+	private Type|false|null $selfOutType = false;
+
+	public function __construct(
+		private ExtendedMethodReflection $reflection,
+		private TemplateTypeMap $resolvedTemplateTypeMap,
+		private TemplateTypeVarianceMap $callSiteVarianceMap,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->reflection->getName();
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this->reflection->getPrototype();
+	}
+
+	public function getVariants(): array
+	{
+		$variants = $this->variants;
+		if ($variants !== null) {
+			return $variants;
+		}
+
+		return $this->variants = $this->resolveVariants($this->reflection->getVariants());
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		$variants = $this->namedArgumentVariants;
+		if ($variants !== null) {
+			return $variants;
+		}
+
+		$innerVariants = $this->reflection->getNamedArgumentsVariants();
+		if ($innerVariants === null) {
+			return null;
+		}
+
+		return $this->namedArgumentVariants = $this->resolveVariants($innerVariants);
+	}
+
+	/**
+	 * @param ExtendedParametersAcceptor[] $variants
+	 * @return list<ResolvedFunctionVariant>
+	 */
+	private function resolveVariants(array $variants): array
+	{
+		$result = [];
+		foreach ($variants as $variant) {
+			$result[] = new ResolvedFunctionVariantWithOriginal(
+				$variant,
+				$this->resolvedTemplateTypeMap,
+				$this->callSiteVarianceMap,
+				[],
+			);
+		}
+
+		return $result;
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->reflection->getDeclaringClass();
+	}
+
+	public function getDeclaringTrait(): ?ClassReflection
+	{
+		if ($this->reflection instanceof PhpMethodReflection) {
+			return $this->reflection->getDeclaringTrait();
+		}
+
+		return null;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->reflection->getDocComment();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->reflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->reflection->getDeprecatedDescription();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->reflection->isFinal();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return $this->reflection->isFinalByKeyword();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->reflection->getThrowType();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return $this->reflection->hasSideEffects();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->reflection->isPure();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return $this->asserts ??= $this->reflection->getAsserts()->mapTypes(fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
+			$type,
+			$this->resolvedTemplateTypeMap,
+			$this->callSiteVarianceMap,
+			TemplateTypeVariance::createInvariant(),
+		));
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->reflection->acceptsNamedArguments();
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		if ($this->selfOutType === false) {
+			$selfOutType = $this->reflection->getSelfOutType();
+			if ($selfOutType !== null) {
+				$selfOutType = TemplateTypeHelper::resolveTemplateTypes(
+					$selfOutType,
+					$this->resolvedTemplateTypeMap,
+					$this->callSiteVarianceMap,
+					TemplateTypeVariance::createInvariant(),
+				);
+			}
+
+			$this->selfOutType = $selfOutType;
+		}
+
+		return $this->selfOutType;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return $this->reflection->returnsByReference();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		$abstract = $this->reflection->isAbstract();
+		if (is_bool($abstract)) {
+			return TrinaryLogic::createFromBoolean($abstract);
+		}
+
+		return $abstract;
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->reflection->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/ResolvedPropertyReflection.php b/src/Reflection/ResolvedPropertyReflection.php
new file mode 100644
index 00000000..47361040
--- /dev/null
+++ b/src/Reflection/ResolvedPropertyReflection.php
@@ -0,0 +1,212 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+
+final class ResolvedPropertyReflection implements WrapperPropertyReflection
+{
+
+	private ?Type $readableType = null;
+
+	private ?Type $writableType = null;
+
+	public function __construct(
+		private ExtendedPropertyReflection $reflection,
+		private TemplateTypeMap $templateTypeMap,
+		private TemplateTypeVarianceMap $callSiteVarianceMap,
+	)
+	{
+	}
+
+	public function getOriginalReflection(): ExtendedPropertyReflection
+	{
+		return $this->reflection;
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->reflection->getDeclaringClass();
+	}
+
+	public function getDeclaringTrait(): ?ClassReflection
+	{
+		if ($this->reflection instanceof PhpPropertyReflection) {
+			return $this->reflection->getDeclaringTrait();
+		}
+
+		return null;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->reflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->reflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->reflection->isPublic();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->reflection->hasPhpDocType();
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->reflection->getPhpDocType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->reflection->hasNativeType();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->reflection->getNativeType();
+	}
+
+	public function getReadableType(): Type
+	{
+		$type = $this->readableType;
+		if ($type !== null) {
+			return $type;
+		}
+
+		$type = TemplateTypeHelper::resolveTemplateTypes(
+			$this->reflection->getReadableType(),
+			$this->templateTypeMap,
+			$this->callSiteVarianceMap,
+			TemplateTypeVariance::createCovariant(),
+		);
+		$type = TemplateTypeHelper::resolveTemplateTypes(
+			$type,
+			$this->templateTypeMap,
+			$this->callSiteVarianceMap,
+			TemplateTypeVariance::createCovariant(),
+		);
+
+		$this->readableType = $type;
+
+		return $type;
+	}
+
+	public function getWritableType(): Type
+	{
+		$type = $this->writableType;
+		if ($type !== null) {
+			return $type;
+		}
+
+		$type = TemplateTypeHelper::resolveTemplateTypes(
+			$this->reflection->getWritableType(),
+			$this->templateTypeMap,
+			$this->callSiteVarianceMap,
+			TemplateTypeVariance::createContravariant(),
+		);
+		$type = TemplateTypeHelper::resolveTemplateTypes(
+			$type,
+			$this->templateTypeMap,
+			$this->callSiteVarianceMap,
+			TemplateTypeVariance::createContravariant(),
+		);
+
+		$this->writableType = $type;
+
+		return $type;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->reflection->canChangeTypeAfterAssignment();
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->reflection->isReadable();
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->reflection->isWritable();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->reflection->getDocComment();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->reflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->reflection->getDeprecatedDescription();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->reflection->isInternal();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return $this->reflection->isAbstract();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->reflection->isFinal();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return $this->reflection->isVirtual();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return $this->reflection->hasHook($hookType);
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		return new ResolvedMethodReflection(
+			$this->reflection->getHook($hookType),
+			$this->templateTypeMap,
+			$this->callSiteVarianceMap,
+		);
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->reflection->isProtectedSet();
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->reflection->isPrivateSet();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->reflection->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/FunctionSignature.php b/src/Reflection/SignatureMap/FunctionSignature.php
new file mode 100644
index 00000000..2ba48142
--- /dev/null
+++ b/src/Reflection/SignatureMap/FunctionSignature.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\Type\Type;
+
+final class FunctionSignature
+{
+
+	/**
+	 * @param list<ParameterSignature> $parameters
+	 */
+	public function __construct(
+		private array $parameters,
+		private Type $returnType,
+		private Type $nativeReturnType,
+		private bool $variadic,
+	)
+	{
+	}
+
+	/**
+	 * @return list<ParameterSignature>
+	 */
+	public function getParameters(): array
+	{
+		return $this->parameters;
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->returnType;
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return $this->nativeReturnType;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/FunctionSignatureMapProvider.php b/src/Reflection/SignatureMap/FunctionSignatureMapProvider.php
new file mode 100644
index 00000000..29618e21
--- /dev/null
+++ b/src/Reflection/SignatureMap/FunctionSignatureMapProvider.php
@@ -0,0 +1,263 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\TypehintHelper;
+use ReflectionFunctionAbstract;
+use function array_change_key_case;
+use function array_key_exists;
+use function array_keys;
+use function is_array;
+use function sprintf;
+use function strtolower;
+use const CASE_LOWER;
+
+final class FunctionSignatureMapProvider implements SignatureMapProvider
+{
+
+	/** @var array<string, mixed[]> */
+	private static array $signatureMaps = [];
+
+	/** @var array<string, array{hasSideEffects: bool}>|null */
+	private static ?array $functionMetadata = null;
+
+	public function __construct(
+		private SignatureMapParser $parser,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private PhpVersion $phpVersion,
+		private bool $stricterFunctionMap,
+	)
+	{
+	}
+
+	public function hasMethodSignature(string $className, string $methodName): bool
+	{
+		return $this->hasFunctionSignature(sprintf('%s::%s', $className, $methodName));
+	}
+
+	public function hasFunctionSignature(string $name): bool
+	{
+		return array_key_exists(strtolower($name), $this->getSignatureMap());
+	}
+
+	public function getMethodSignatures(string $className, string $methodName, ?ReflectionMethod $reflectionMethod): array
+	{
+		return $this->getFunctionSignatures(sprintf('%s::%s', $className, $methodName), $className, $reflectionMethod);
+	}
+
+	public function getFunctionSignatures(string $functionName, ?string $className, ?ReflectionFunctionAbstract $reflectionFunction): array
+	{
+		$functionName = strtolower($functionName);
+
+		$signatures = [$this->createSignature($functionName, $className, $reflectionFunction)];
+		$i = 1;
+		$variantFunctionName = $functionName . '\'' . $i;
+		while ($this->hasFunctionSignature($variantFunctionName)) {
+			$signatures[] = $this->createSignature($variantFunctionName, $className, $reflectionFunction);
+			$i++;
+			$variantFunctionName = $functionName . '\'' . $i;
+		}
+
+		return ['positional' => $signatures, 'named' => null];
+	}
+
+	private function createSignature(string $functionName, ?string $className, ?ReflectionFunctionAbstract $reflectionFunction): FunctionSignature
+	{
+		if (!$reflectionFunction instanceof ReflectionMethod && !$reflectionFunction instanceof ReflectionFunction && $reflectionFunction !== null) {
+			throw new ShouldNotHappenException();
+		}
+		$signatureMap = self::getSignatureMap();
+		$signature = $this->parser->getFunctionSignature(
+			$signatureMap[$functionName],
+			$className,
+		);
+		$parameters = [];
+		foreach ($signature->getParameters() as $i => $parameter) {
+			if ($reflectionFunction === null) {
+				$parameters[] = $parameter;
+				continue;
+			}
+			$nativeParameters = $reflectionFunction->getParameters();
+			if (!array_key_exists($i, $nativeParameters)) {
+				$parameters[] = $parameter;
+				continue;
+			}
+
+			$parameters[] = new ParameterSignature(
+				$parameter->getName(),
+				$parameter->isOptional(),
+				$parameter->getType(),
+				TypehintHelper::decideTypeFromReflection($nativeParameters[$i]->getType()),
+				$parameter->passedByReference(),
+				$parameter->isVariadic(),
+				$nativeParameters[$i]->isDefaultValueAvailable() ? $this->initializerExprTypeResolver->getType(
+					$nativeParameters[$i]->getDefaultValueExpression(),
+					InitializerExprContext::fromReflectionParameter($nativeParameters[$i]),
+				) : null,
+				$parameter->getOutType(),
+			);
+		}
+
+		if ($reflectionFunction === null) {
+			$nativeReturnType = new MixedType();
+		} else {
+			$nativeReturnType = TypehintHelper::decideTypeFromReflection($reflectionFunction->getReturnType());
+		}
+
+		return new FunctionSignature(
+			$parameters,
+			$signature->getReturnType(),
+			$nativeReturnType,
+			$signature->isVariadic(),
+		);
+	}
+
+	public function hasMethodMetadata(string $className, string $methodName): bool
+	{
+		return $this->hasFunctionMetadata(sprintf('%s::%s', $className, $methodName));
+	}
+
+	public function hasFunctionMetadata(string $name): bool
+	{
+		$signatureMap = self::getFunctionMetadataMap();
+		return array_key_exists(strtolower($name), $signatureMap);
+	}
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getMethodMetadata(string $className, string $methodName): array
+	{
+		return $this->getFunctionMetadata(sprintf('%s::%s', $className, $methodName));
+	}
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getFunctionMetadata(string $functionName): array
+	{
+		$functionName = strtolower($functionName);
+
+		if (!$this->hasFunctionMetadata($functionName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		return self::getFunctionMetadataMap()[$functionName];
+	}
+
+	/**
+	 * @return array<string, array{hasSideEffects: bool}>
+	 */
+	private static function getFunctionMetadataMap(): array
+	{
+		if (self::$functionMetadata === null) {
+			/** @var array<string, array{hasSideEffects: bool}> $metadata */
+			$metadata = require __DIR__ . '/../../../resources/functionMetadata.php';
+			self::$functionMetadata = array_change_key_case($metadata, CASE_LOWER);
+		}
+
+		return self::$functionMetadata;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getSignatureMap(): array
+	{
+		$cacheKey = sprintf('%d-%d', $this->phpVersion->getVersionId(), $this->stricterFunctionMap ? 1 : 0);
+		if (array_key_exists($cacheKey, self::$signatureMaps)) {
+			return self::$signatureMaps[$cacheKey];
+		}
+
+		$signatureMap = require __DIR__ . '/../../../resources/functionMap.php';
+		if (!is_array($signatureMap)) {
+			throw new ShouldNotHappenException('Signature map could not be loaded.');
+		}
+
+		$signatureMap = array_change_key_case($signatureMap, CASE_LOWER);
+
+		if ($this->stricterFunctionMap) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_bleedingEdge.php');
+		}
+
+		if ($this->phpVersion->getVersionId() >= 70400) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php74delta.php');
+		}
+
+		if ($this->phpVersion->getVersionId() >= 80000) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php80delta.php');
+
+			if ($this->stricterFunctionMap) {
+				$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php80delta_bleedingEdge.php');
+			}
+		}
+
+		if ($this->phpVersion->getVersionId() >= 80100) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php81delta.php');
+		}
+
+		if ($this->phpVersion->getVersionId() >= 80200) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php82delta.php');
+		}
+
+		if ($this->phpVersion->getVersionId() >= 80300) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php83delta.php');
+		}
+
+		if ($this->phpVersion->getVersionId() >= 80400) {
+			$signatureMap = $this->computeSignatureMapFile($signatureMap, __DIR__ . '/../../../resources/functionMap_php84delta.php');
+		}
+
+		return self::$signatureMaps[$cacheKey] = $signatureMap;
+	}
+
+	/**
+	 * @param array<string, mixed> $signatureMap
+	 * @return array<string, mixed>
+	 */
+	private function computeSignatureMapFile(array $signatureMap, string $file): array
+	{
+		$signatureMapDelta = include $file;
+		if (!is_array($signatureMapDelta)) {
+			throw new ShouldNotHappenException(sprintf('Signature map file "%s" could not be loaded.', $file));
+		}
+
+		return $this->computeSignatureMap($signatureMap, $signatureMapDelta);
+	}
+
+	/**
+	 * @param array<string, mixed> $signatureMap
+	 * @param array<string, array<string, mixed>> $delta
+	 * @return array<string, mixed>
+	 */
+	private function computeSignatureMap(array $signatureMap, array $delta): array
+	{
+		foreach (array_keys($delta['old']) as $key) {
+			unset($signatureMap[strtolower($key)]);
+		}
+		foreach ($delta['new'] as $key => $signature) {
+			$signatureMap[strtolower($key)] = $signature;
+		}
+
+		return $signatureMap;
+	}
+
+	public function hasClassConstantMetadata(string $className, string $constantName): bool
+	{
+		return false;
+	}
+
+	public function getClassConstantMetadata(string $className, string $constantName): array
+	{
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/NativeFunctionReflectionProvider.php b/src/Reflection/SignatureMap/NativeFunctionReflectionProvider.php
new file mode 100644
index 00000000..507a3eb0
--- /dev/null
+++ b/src/Reflection/SignatureMap/NativeFunctionReflectionProvider.php
@@ -0,0 +1,195 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\BetterReflection\Identifier\Exception\InvalidIdentifierName;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionFunction;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\Native\ExtendedNativeParameterReflection;
+use PHPStan\Reflection\Native\NativeFunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use function array_key_exists;
+use function array_map;
+use function strtolower;
+
+final class NativeFunctionReflectionProvider
+{
+
+	/** @var NativeFunctionReflection[] */
+	private array $functionMap = [];
+
+	public function __construct(
+		private SignatureMapProvider $signatureMapProvider,
+		private Reflector $reflector,
+		private FileTypeMapper $fileTypeMapper,
+		private StubPhpDocProvider $stubPhpDocProvider,
+		private AttributeReflectionFactory $attributeReflectionFactory,
+	)
+	{
+	}
+
+	public function findFunctionReflection(string $functionName): ?NativeFunctionReflection
+	{
+		$lowerCasedFunctionName = strtolower($functionName);
+		$realFunctionName = $lowerCasedFunctionName;
+		if (isset($this->functionMap[$lowerCasedFunctionName])) {
+			return $this->functionMap[$lowerCasedFunctionName];
+		}
+
+		if (!$this->signatureMapProvider->hasFunctionSignature($lowerCasedFunctionName)) {
+			return null;
+		}
+
+		$throwType = null;
+		$reflectionFunctionAdapter = null;
+		$isDeprecated = false;
+		$phpDocReturnType = null;
+		$asserts = Assertions::createEmpty();
+		$docComment = null;
+		$returnsByReference = TrinaryLogic::createMaybe();
+		$acceptsNamedArguments = true;
+		$fileName = null;
+		$attributes = [];
+		try {
+			$reflectionFunction = $this->reflector->reflectFunction($functionName);
+			$reflectionFunctionAdapter = new ReflectionFunction($reflectionFunction);
+			$attributes = $reflectionFunctionAdapter->getAttributes();
+			$returnsByReference = TrinaryLogic::createFromBoolean($reflectionFunctionAdapter->returnsReference());
+			$realFunctionName = $reflectionFunction->getName();
+			$isDeprecated = $reflectionFunction->isDeprecated();
+			if ($reflectionFunction->getFileName() !== null) {
+				$fileName = $reflectionFunction->getFileName();
+				$docComment = $reflectionFunction->getDocComment();
+				if ($docComment !== null) {
+					$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc($fileName, null, null, $reflectionFunction->getName(), $docComment);
+					$throwsTag = $resolvedPhpDoc->getThrowsTag();
+					if ($throwsTag !== null) {
+						$throwType = $throwsTag->getType();
+					}
+				}
+			}
+		} catch (IdentifierNotFound | InvalidIdentifierName) {
+			// pass
+		}
+
+		$functionSignaturesResult = $this->signatureMapProvider->getFunctionSignatures($lowerCasedFunctionName, null, $reflectionFunctionAdapter);
+
+		$phpDoc = $this->stubPhpDocProvider->findFunctionPhpDoc($lowerCasedFunctionName, array_map(static fn (ParameterSignature $parameter): string => $parameter->getName(), $functionSignaturesResult['positional'][0]->getParameters()));
+		if ($phpDoc !== null) {
+			if ($phpDoc->hasPhpDocString()) {
+				$docComment = $phpDoc->getPhpDocString();
+			}
+			if ($phpDoc->getThrowsTag() !== null) {
+				$throwType = $phpDoc->getThrowsTag()->getType();
+			}
+			$asserts = Assertions::createFromResolvedPhpDocBlock($phpDoc);
+			$phpDocReturnType = $this->getReturnTypeFromPhpDoc($phpDoc);
+			$acceptsNamedArguments = $phpDoc->acceptsNamedArguments();
+		}
+
+		$variantsByType = ['positional' => []];
+		foreach ($functionSignaturesResult as $signatureType => $functionSignatures) {
+			foreach ($functionSignatures ?? [] as $functionSignature) {
+				$variantsByType[$signatureType][] = new ExtendedFunctionVariant(
+					TemplateTypeMap::createEmpty(),
+					null,
+					array_map(static function (ParameterSignature $parameterSignature) use ($phpDoc): ExtendedNativeParameterReflection {
+						$type = $parameterSignature->getType();
+
+						$phpDocType = null;
+						$immediatelyInvokedCallable = TrinaryLogic::createMaybe();
+						$closureThisType = null;
+						if ($phpDoc !== null) {
+							if (array_key_exists($parameterSignature->getName(), $phpDoc->getParamTags())) {
+								$phpDocType = $phpDoc->getParamTags()[$parameterSignature->getName()]->getType();
+							}
+							if (array_key_exists($parameterSignature->getName(), $phpDoc->getParamsImmediatelyInvokedCallable())) {
+								$immediatelyInvokedCallable = TrinaryLogic::createFromBoolean($phpDoc->getParamsImmediatelyInvokedCallable()[$parameterSignature->getName()]);
+							}
+							if (array_key_exists($parameterSignature->getName(), $phpDoc->getParamClosureThisTags())) {
+								$closureThisType = $phpDoc->getParamClosureThisTags()[$parameterSignature->getName()]->getType();
+							}
+						}
+
+						return new ExtendedNativeParameterReflection(
+							$parameterSignature->getName(),
+							$parameterSignature->isOptional(),
+							TypehintHelper::decideType($type, $phpDocType),
+							$phpDocType ?? new MixedType(),
+							$type,
+							$parameterSignature->passedByReference(),
+							$parameterSignature->isVariadic(),
+							$parameterSignature->getDefaultValue(),
+							$phpDoc !== null ? NativeFunctionReflectionProvider::getParamOutTypeFromPhpDoc($parameterSignature->getName(), $phpDoc) : null,
+							$immediatelyInvokedCallable,
+							$closureThisType,
+							[],
+						);
+					}, $functionSignature->getParameters()),
+					$functionSignature->isVariadic(),
+					TypehintHelper::decideType($functionSignature->getReturnType(), $phpDocReturnType),
+					$phpDocReturnType ?? new MixedType(),
+					$functionSignature->getReturnType(),
+				);
+			}
+		}
+
+		if ($this->signatureMapProvider->hasFunctionMetadata($lowerCasedFunctionName)) {
+			$hasSideEffects = TrinaryLogic::createFromBoolean($this->signatureMapProvider->getFunctionMetadata($lowerCasedFunctionName)['hasSideEffects']);
+		} else {
+			$hasSideEffects = TrinaryLogic::createMaybe();
+		}
+
+		$functionReflection = new NativeFunctionReflection(
+			$realFunctionName,
+			$variantsByType['positional'],
+			$variantsByType['named'] ?? null,
+			$throwType,
+			$hasSideEffects,
+			$isDeprecated,
+			$asserts,
+			$docComment,
+			$returnsByReference,
+			$acceptsNamedArguments,
+			$this->attributeReflectionFactory->fromNativeReflection($attributes, InitializerExprContext::fromFunction($realFunctionName, $fileName)),
+		);
+		$this->functionMap[$lowerCasedFunctionName] = $functionReflection;
+
+		return $functionReflection;
+	}
+
+	private function getReturnTypeFromPhpDoc(ResolvedPhpDocBlock $phpDoc): ?Type
+	{
+		$returnTag = $phpDoc->getReturnTag();
+		if ($returnTag === null) {
+			return null;
+		}
+
+		return $returnTag->getType();
+	}
+
+	private static function getParamOutTypeFromPhpDoc(string $paramName, ResolvedPhpDocBlock $stubPhpDoc): ?Type
+	{
+		$paramOutTags = $stubPhpDoc->getParamOutTags();
+
+		if (array_key_exists($paramName, $paramOutTags)) {
+			return $paramOutTags[$paramName]->getType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/ParameterSignature.php b/src/Reflection/SignatureMap/ParameterSignature.php
new file mode 100644
index 00000000..13072c4a
--- /dev/null
+++ b/src/Reflection/SignatureMap/ParameterSignature.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Type\Type;
+
+final class ParameterSignature
+{
+
+	public function __construct(
+		private string $name,
+		private bool $optional,
+		private Type $type,
+		private Type $nativeType,
+		private PassedByReference $passedByReference,
+		private bool $variadic,
+		private ?Type $defaultValue,
+		private ?Type $outType,
+	)
+	{
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->optional;
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->nativeType;
+	}
+
+	public function passedByReference(): PassedByReference
+	{
+		return $this->passedByReference;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getDefaultValue(): ?Type
+	{
+		return $this->defaultValue;
+	}
+
+	public function getOutType(): ?Type
+	{
+		return $this->outType;
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/Php8SignatureMapProvider.php b/src/Reflection/SignatureMap/Php8SignatureMapProvider.php
new file mode 100644
index 00000000..00a2423f
--- /dev/null
+++ b/src/Reflection/SignatureMap/Php8SignatureMapProvider.php
@@ -0,0 +1,512 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PhpParser\Node\AttributeGroup;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Php8StubsMap;
+use PHPStan\PhpDoc\Tag\ParamTag;
+use PHPStan\Reflection\BetterReflection\SourceLocator\FileNodesFetcher;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use ReflectionFunctionAbstract;
+use function array_key_exists;
+use function array_map;
+use function count;
+use function explode;
+use function is_string;
+use function sprintf;
+use function strtolower;
+
+final class Php8SignatureMapProvider implements SignatureMapProvider
+{
+
+	private const DIRECTORY = __DIR__ . '/../../../vendor/phpstan/php-8-stubs';
+
+	/** @var array<string, array<string, array{ClassMethod, string}>> */
+	private array $methodNodes = [];
+
+	/** @var array<string, array<string, Type|null>> */
+	private array $constantTypes = [];
+
+	private Php8StubsMap $map;
+
+	public function __construct(
+		private FunctionSignatureMapProvider $functionSignatureMapProvider,
+		private FileNodesFetcher $fileNodesFetcher,
+		private FileTypeMapper $fileTypeMapper,
+		private PhpVersion $phpVersion,
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionProviderProvider $reflectionProviderProvider,
+	)
+	{
+		$this->map = new Php8StubsMap($phpVersion->getVersionId());
+	}
+
+	public function hasMethodSignature(string $className, string $methodName): bool
+	{
+		$lowerClassName = strtolower($className);
+		if ($lowerClassName === 'backedenum') {
+			return false;
+		}
+		if (!array_key_exists($lowerClassName, $this->map->classes)) {
+			return $this->functionSignatureMapProvider->hasMethodSignature($className, $methodName);
+		}
+
+		if ($this->findMethodNode($className, $methodName) === null) {
+			return $this->functionSignatureMapProvider->hasMethodSignature($className, $methodName);
+		}
+
+		return true;
+	}
+
+	/**
+	 * @return array{ClassMethod, string}|null
+	 */
+	private function findMethodNode(string $className, string $methodName): ?array
+	{
+		$lowerClassName = strtolower($className);
+		$lowerMethodName = strtolower($methodName);
+		if (isset($this->methodNodes[$lowerClassName][$lowerMethodName])) {
+			return $this->methodNodes[$lowerClassName][$lowerMethodName];
+		}
+
+		$stubFile = self::DIRECTORY . '/' . $this->map->classes[$lowerClassName];
+		$nodes = $this->fileNodesFetcher->fetchNodes($stubFile);
+		$classes = $nodes->getClassNodes();
+		if (count($classes) !== 1) {
+			throw new ShouldNotHappenException(sprintf('Class %s stub not found in %s.', $className, $stubFile));
+		}
+
+		$class = $classes[$lowerClassName];
+		if (count($class) !== 1) {
+			throw new ShouldNotHappenException(sprintf('Class %s stub not found in %s.', $className, $stubFile));
+		}
+
+		foreach ($class[0]->getNode()->stmts as $stmt) {
+			if (!$stmt instanceof ClassMethod) {
+				continue;
+			}
+
+			if ($stmt->name->toLowerString() === $lowerMethodName) {
+				if (!$this->isForCurrentVersion($stmt->attrGroups)) {
+					continue;
+				}
+				return $this->methodNodes[$lowerClassName][$lowerMethodName] = [$stmt, $stubFile];
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param AttributeGroup[] $attrGroups
+	 */
+	private function isForCurrentVersion(array $attrGroups): bool
+	{
+		foreach ($attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				if ($attr->name->toString() === 'Until') {
+					$arg = $attr->args[0]->value;
+					if (!$arg instanceof String_) {
+						throw new ShouldNotHappenException();
+					}
+					$parts = explode('.', $arg->value);
+					$versionId = (int) $parts[0] * 10000 + (int) ($parts[1] ?? 0) * 100 + (int) ($parts[2] ?? 0);
+					if ($this->phpVersion->getVersionId() >= $versionId) {
+						return false;
+					}
+				}
+				if ($attr->name->toString() !== 'Since') {
+					continue;
+				}
+
+				$arg = $attr->args[0]->value;
+				if (!$arg instanceof String_) {
+					throw new ShouldNotHappenException();
+				}
+				$parts = explode('.', $arg->value);
+				$versionId = (int) $parts[0] * 10000 + (int) ($parts[1] ?? 0) * 100 + (int) ($parts[2] ?? 0);
+				if ($this->phpVersion->getVersionId() < $versionId) {
+					return false;
+				}
+			}
+		}
+
+		return true;
+	}
+
+	public function hasFunctionSignature(string $name): bool
+	{
+		$lowerName = strtolower($name);
+		if (!array_key_exists($lowerName, $this->map->functions)) {
+			return $this->functionSignatureMapProvider->hasFunctionSignature($name);
+		}
+
+		return true;
+	}
+
+	public function getMethodSignatures(string $className, string $methodName, ?ReflectionMethod $reflectionMethod): array
+	{
+		$lowerClassName = strtolower($className);
+		if (!array_key_exists($lowerClassName, $this->map->classes)) {
+			return $this->functionSignatureMapProvider->getMethodSignatures($className, $methodName, $reflectionMethod);
+		}
+
+		$methodNode = $this->findMethodNode($className, $methodName);
+		if ($methodNode === null) {
+			return $this->functionSignatureMapProvider->getMethodSignatures($className, $methodName, $reflectionMethod);
+		}
+
+		[$methodNode, $stubFile] = $methodNode;
+
+		$signature = $this->getSignature($methodNode, $className, $stubFile);
+		if ($this->functionSignatureMapProvider->hasMethodSignature($className, $methodName)) {
+			$functionMapSignatures = $this->functionSignatureMapProvider->getMethodSignatures($className, $methodName, $reflectionMethod);
+
+			return $this->getMergedSignatures($signature, $functionMapSignatures);
+		}
+
+		return ['positional' => [$signature], 'named' => null];
+	}
+
+	public function getFunctionSignatures(string $functionName, ?string $className, ReflectionFunctionAbstract|null $reflectionFunction): array
+	{
+		$lowerName = strtolower($functionName);
+		if (!array_key_exists($lowerName, $this->map->functions)) {
+			return $this->functionSignatureMapProvider->getFunctionSignatures($functionName, $className, $reflectionFunction);
+		}
+
+		$stubFile = self::DIRECTORY . '/' . $this->map->functions[$lowerName];
+		$nodes = $this->fileNodesFetcher->fetchNodes($stubFile);
+		$functions = $nodes->getFunctionNodes();
+		if (!array_key_exists($lowerName, $functions)) {
+			throw new ShouldNotHappenException(sprintf('Function %s stub not found in %s.', $functionName, $stubFile));
+		}
+		foreach ($functions[$lowerName] as $functionNode) {
+			if (!$this->isForCurrentVersion($functionNode->getNode()->getAttrGroups())) {
+				continue;
+			}
+
+			$signature = $this->getSignature($functionNode->getNode(), null, $stubFile);
+			if ($this->functionSignatureMapProvider->hasFunctionSignature($functionName)) {
+				$functionMapSignatures = $this->functionSignatureMapProvider->getFunctionSignatures($functionName, $className, $reflectionFunction);
+
+				return $this->getMergedSignatures($signature, $functionMapSignatures);
+			}
+
+			return ['positional' => [$signature], 'named' => null];
+		}
+
+		throw new ShouldNotHappenException(sprintf('Function %s stub not found in %s.', $functionName, $stubFile));
+	}
+
+	/**
+	 * @param array{positional: array<int, FunctionSignature>, named: ?array<int, FunctionSignature>} $functionMapSignatures
+	 * @return array{positional: array<int, FunctionSignature>, named: ?array<int, FunctionSignature>}
+	 */
+	private function getMergedSignatures(FunctionSignature $nativeSignature, array $functionMapSignatures): array
+	{
+		if (count($functionMapSignatures['positional']) === 1) {
+			return ['positional' => [$this->mergeSignatures($nativeSignature, $functionMapSignatures['positional'][0])], 'named' => null];
+		}
+
+		if (count($functionMapSignatures['positional']) === 0) {
+			return ['positional' => [], 'named' => null];
+		}
+
+		$nativeParams = $nativeSignature->getParameters();
+		$namedArgumentsVariants = [];
+		$allParamNamesMatchNative = true;
+		foreach ($functionMapSignatures['positional'] as $functionMapSignature) {
+			$isPrevParamVariadic = false;
+			$hasMiddleVariadicParam = false;
+			// avoid weird functions like array_diff_uassoc
+			foreach ($functionMapSignature->getParameters() as $i => $functionParam) {
+				$nativeParam = $nativeParams[$i] ?? null;
+				$allParamNamesMatchNative = $allParamNamesMatchNative && $nativeParam !== null && $functionParam->getName() === $nativeParam->getName();
+				$hasMiddleVariadicParam = $hasMiddleVariadicParam || $isPrevParamVariadic;
+				$isPrevParamVariadic = $functionParam->isVariadic() || (
+					$nativeParam !== null
+						? $nativeParam->isVariadic()
+						: false
+					);
+			}
+
+			if ($hasMiddleVariadicParam) {
+				continue;
+			}
+
+			$parameters = [];
+			foreach ($functionMapSignature->getParameters() as $i => $functionParam) {
+				if (!array_key_exists($i, $nativeParams)) {
+					continue 2;
+				}
+
+				// it seems that variadic parameters cannot be named in native functions/methods.
+				$nativeParam = $nativeParams[$i];
+				if ($nativeParam->isVariadic()) {
+					break;
+				}
+
+				$parameters[] = new ParameterSignature(
+					$nativeParam->getName(),
+					$functionParam->isOptional(),
+					$functionParam->getType(),
+					$functionParam->getNativeType(),
+					$functionParam->passedByReference(),
+					$functionParam->isVariadic(),
+					$functionParam->getDefaultValue(),
+					$functionParam->getOutType(),
+				);
+			}
+
+			$namedArgumentsVariants[] = new FunctionSignature(
+				$parameters,
+				$functionMapSignature->getReturnType(),
+				$functionMapSignature->getNativeReturnType(),
+				$functionMapSignature->isVariadic(),
+			);
+		}
+
+		if ($allParamNamesMatchNative || count($namedArgumentsVariants) === 0) {
+			$namedArgumentsVariants = null;
+		}
+
+		return ['positional' => $functionMapSignatures['positional'], 'named' => $namedArgumentsVariants];
+	}
+
+	private function mergeSignatures(FunctionSignature $nativeSignature, FunctionSignature $functionMapSignature): FunctionSignature
+	{
+		$parameters = [];
+		foreach ($nativeSignature->getParameters() as $i => $nativeParameter) {
+			if (!array_key_exists($i, $functionMapSignature->getParameters())) {
+				$parameters[] = $nativeParameter;
+				continue;
+			}
+
+			$functionMapParameter = $functionMapSignature->getParameters()[$i];
+			$nativeParameterType = $nativeParameter->getNativeType();
+			$parameters[] = new ParameterSignature(
+				$nativeParameter->getName(),
+				$nativeParameter->isOptional(),
+				TypehintHelper::decideType(
+					$nativeParameterType,
+					TypehintHelper::decideType(
+						$nativeParameter->getType(),
+						$functionMapParameter->getType(),
+					),
+				),
+				$nativeParameterType,
+				$nativeParameter->passedByReference()->yes() ? $functionMapParameter->passedByReference() : $nativeParameter->passedByReference(),
+				$nativeParameter->isVariadic(),
+				$nativeParameter->getDefaultValue(),
+				$nativeParameter->getOutType(),
+			);
+		}
+
+		$nativeReturnType = $nativeSignature->getNativeReturnType();
+		if ($nativeReturnType instanceof MixedType && !$nativeReturnType->isExplicitMixed()) {
+			$returnType = $functionMapSignature->getReturnType();
+		} else {
+			$returnType = TypehintHelper::decideType(
+				$nativeReturnType,
+				TypehintHelper::decideType(
+					$nativeSignature->getReturnType(),
+					$functionMapSignature->getReturnType(),
+				),
+			);
+		}
+
+		return new FunctionSignature(
+			$parameters,
+			$returnType,
+			$nativeReturnType,
+			$nativeSignature->isVariadic(),
+		);
+	}
+
+	public function hasMethodMetadata(string $className, string $methodName): bool
+	{
+		return $this->functionSignatureMapProvider->hasMethodMetadata($className, $methodName);
+	}
+
+	public function hasFunctionMetadata(string $name): bool
+	{
+		return $this->functionSignatureMapProvider->hasFunctionMetadata($name);
+	}
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getMethodMetadata(string $className, string $methodName): array
+	{
+		return $this->functionSignatureMapProvider->getMethodMetadata($className, $methodName);
+	}
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getFunctionMetadata(string $functionName): array
+	{
+		return $this->functionSignatureMapProvider->getFunctionMetadata($functionName);
+	}
+
+	private function getSignature(
+		ClassMethod|Function_ $function,
+		?string $className,
+		string $stubFile,
+	): FunctionSignature
+	{
+		$phpDocParameterTypes = null;
+		$phpDocReturnType = null;
+		if ($function->getDocComment() !== null) {
+			if ($function instanceof ClassMethod) {
+				$functionName = $function->name->toString();
+			} elseif ($function->namespacedName !== null) {
+				$functionName = $function->namespacedName->toString();
+			} else {
+				throw new ShouldNotHappenException();
+			}
+			$phpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$stubFile,
+				$className,
+				null,
+				$functionName,
+				$function->getDocComment()->getText(),
+			);
+			$phpDocParameterTypes = array_map(static fn (ParamTag $param): Type => $param->getType(), $phpDoc->getParamTags());
+			if ($phpDoc->getReturnTag() !== null) {
+				$phpDocReturnType = $phpDoc->getReturnTag()->getType();
+			}
+		}
+
+		$classReflection = null;
+		if ($className !== null) {
+			$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+			$classReflection = $reflectionProvider->getClass($className);
+		}
+
+		$parameters = [];
+		$variadic = false;
+		foreach ($function->getParams() as $param) {
+			$name = $param->var;
+			if (!$name instanceof Variable || !is_string($name->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$parameterType = ParserNodeTypeToPHPStanType::resolve($param->type, $classReflection);
+			$parameters[] = new ParameterSignature(
+				$name->name,
+				$param->default !== null || $param->variadic,
+				TypehintHelper::decideType($parameterType, $phpDocParameterTypes[$name->name] ?? null),
+				$parameterType,
+				$param->byRef ? PassedByReference::createCreatesNewVariable() : PassedByReference::createNo(),
+				$param->variadic,
+				$param->default !== null ? $this->initializerExprTypeResolver->getType(
+					$param->default,
+					InitializerExprContext::fromStubParameter($className, $stubFile, $function),
+				) : null,
+				null,
+			);
+
+			$variadic = $variadic || $param->variadic;
+		}
+
+		$returnType = ParserNodeTypeToPHPStanType::resolve($function->getReturnType(), $classReflection);
+
+		return new FunctionSignature(
+			$parameters,
+			TypehintHelper::decideType($returnType, $phpDocReturnType ?? null),
+			$returnType,
+			$variadic,
+		);
+	}
+
+	public function hasClassConstantMetadata(string $className, string $constantName): bool
+	{
+		$lowerClassName = strtolower($className);
+		if (!array_key_exists($lowerClassName, $this->map->classes)) {
+			return false;
+		}
+
+		return $this->findConstantType($className, $constantName) !== null;
+	}
+
+	public function getClassConstantMetadata(string $className, string $constantName): array
+	{
+		$lowerClassName = strtolower($className);
+		if (!array_key_exists($lowerClassName, $this->map->classes)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$type = $this->findConstantType($className, $constantName);
+		if ($type === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return [
+			'nativeType' => $type,
+		];
+	}
+
+	private function findConstantType(string $className, string $constantName): ?Type
+	{
+		$lowerClassName = strtolower($className);
+		$lowerConstantName = strtolower($constantName);
+		if (isset($this->constantTypes[$lowerClassName][$lowerConstantName])) {
+			return $this->constantTypes[$lowerClassName][$lowerConstantName];
+		}
+
+		$stubFile = self::DIRECTORY . '/' . $this->map->classes[$lowerClassName];
+		$nodes = $this->fileNodesFetcher->fetchNodes($stubFile);
+		$classes = $nodes->getClassNodes();
+		if (count($classes) !== 1) {
+			throw new ShouldNotHappenException(sprintf('Class %s stub not found in %s.', $className, $stubFile));
+		}
+
+		$class = $classes[$lowerClassName];
+		if (count($class) !== 1) {
+			throw new ShouldNotHappenException(sprintf('Class %s stub not found in %s.', $className, $stubFile));
+		}
+
+		foreach ($class[0]->getNode()->stmts as $stmt) {
+			if (!$stmt instanceof ClassConst) {
+				continue;
+			}
+
+			foreach ($stmt->consts as $const) {
+				if ($const->name->toString() !== $constantName) {
+					continue;
+				}
+
+				if (!$this->isForCurrentVersion($stmt->attrGroups)) {
+					continue;
+				}
+
+				if ($stmt->type === null) {
+					return null;
+				}
+
+				return $this->constantTypes[$lowerClassName][$lowerConstantName] = ParserNodeTypeToPHPStanType::resolve($stmt->type, null);
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/SignatureMapParser.php b/src/Reflection/SignatureMap/SignatureMapParser.php
new file mode 100644
index 00000000..3ee43777
--- /dev/null
+++ b/src/Reflection/SignatureMap/SignatureMapParser.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\TypeStringResolver;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use function array_slice;
+use function str_starts_with;
+use function substr;
+
+final class SignatureMapParser
+{
+
+	private TypeStringResolver $typeStringResolver;
+
+	public function __construct(
+		TypeStringResolver $typeNodeResolver,
+	)
+	{
+		$this->typeStringResolver = $typeNodeResolver;
+	}
+
+	/**
+	 * @param mixed[] $map
+	 */
+	public function getFunctionSignature(array $map, ?string $className): FunctionSignature
+	{
+		$parameterSignatures = $this->getParameters(array_slice($map, 1));
+		$hasVariadic = false;
+		foreach ($parameterSignatures as $parameterSignature) {
+			if ($parameterSignature->isVariadic()) {
+				$hasVariadic = true;
+				break;
+			}
+		}
+		return new FunctionSignature(
+			$parameterSignatures,
+			$this->getTypeFromString($map[0], $className),
+			new MixedType(),
+			$hasVariadic,
+		);
+	}
+
+	private function getTypeFromString(string $typeString, ?string $className): Type
+	{
+		if ($typeString === '') {
+			return new MixedType(true);
+		}
+
+		return $this->typeStringResolver->resolve($typeString, new NameScope(null, [], $className));
+	}
+
+	/**
+	 * @param array<string, string> $parameterMap
+	 * @return list<ParameterSignature>
+	 */
+	private function getParameters(array $parameterMap): array
+	{
+		$parameterSignatures = [];
+		foreach ($parameterMap as $parameterName => $typeString) {
+			[$name, $isOptional, $passedByReference, $isVariadic] = $this->getParameterInfoFromName($parameterName);
+			$parameterSignatures[] = new ParameterSignature(
+				$name,
+				$isOptional,
+				$this->getTypeFromString($typeString, null),
+				new MixedType(),
+				$passedByReference,
+				$isVariadic,
+				null,
+				null,
+			);
+		}
+
+		return $parameterSignatures;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	private function getParameterInfoFromName(string $parameterNameString): array
+	{
+		$matches = Strings::match(
+			$parameterNameString,
+			'#^(?P<reference>&(?:\.\.\.)?r?w?_?)?(?P<variadic>\.\.\.)?(?P<name>[^=]+)?(?P<optional>=)?($)#',
+		);
+		if ($matches === null || !isset($matches['optional'])) {
+			throw new ShouldNotHappenException();
+		}
+
+		$isVariadic = $matches['variadic'] !== '';
+
+		$reference = $matches['reference'];
+		if (str_starts_with($reference, '&...')) {
+			$reference = '&' . substr($reference, 4);
+			$isVariadic = true;
+		}
+		if (str_starts_with($reference, '&rw')) {
+			$passedByReference = PassedByReference::createReadsArgument();
+		} elseif (str_starts_with($reference, '&')) {
+			$passedByReference = PassedByReference::createCreatesNewVariable();
+		} else {
+			$passedByReference = PassedByReference::createNo();
+		}
+
+		$isOptional = $isVariadic || $matches['optional'] !== '';
+
+		$name = $matches['name'] !== '' ? $matches['name'] : '...';
+
+		return [$name, $isOptional, $passedByReference, $isVariadic];
+	}
+
+}
diff --git a/src/Reflection/SignatureMap/SignatureMapProvider.php b/src/Reflection/SignatureMap/SignatureMapProvider.php
new file mode 100644
index 00000000..4eb30a01
--- /dev/null
+++ b/src/Reflection/SignatureMap/SignatureMapProvider.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\Type\Type;
+use ReflectionFunctionAbstract;
+
+interface SignatureMapProvider
+{
+
+	public function hasMethodSignature(string $className, string $methodName): bool;
+
+	public function hasFunctionSignature(string $name): bool;
+
+	/** @return array{positional: array<int, FunctionSignature>, named: ?array<int, FunctionSignature>} */
+	public function getMethodSignatures(string $className, string $methodName, ?ReflectionMethod $reflectionMethod): array;
+
+	/** @return array{positional: array<int, FunctionSignature>, named: ?array<int, FunctionSignature>} */
+	public function getFunctionSignatures(string $functionName, ?string $className, ?ReflectionFunctionAbstract $reflectionFunction): array;
+
+	public function hasMethodMetadata(string $className, string $methodName): bool;
+
+	public function hasFunctionMetadata(string $name): bool;
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getMethodMetadata(string $className, string $methodName): array;
+
+	/**
+	 * @return array{hasSideEffects: bool}
+	 */
+	public function getFunctionMetadata(string $functionName): array;
+
+	public function hasClassConstantMetadata(string $className, string $constantName): bool;
+
+	/**
+	 * @return array{nativeType: Type}
+	 */
+	public function getClassConstantMetadata(string $className, string $constantName): array;
+
+}
diff --git a/src/Reflection/SignatureMap/SignatureMapProviderFactory.php b/src/Reflection/SignatureMap/SignatureMapProviderFactory.php
new file mode 100644
index 00000000..a2dfab33
--- /dev/null
+++ b/src/Reflection/SignatureMap/SignatureMapProviderFactory.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Reflection\SignatureMap;
+return;
+
+use PHPStan\Php\PhpVersion;
+
+final class SignatureMapProviderFactory
+{
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private FunctionSignatureMapProvider $functionSignatureMapProvider,
+		private Php8SignatureMapProvider $php8SignatureMapProvider,
+	)
+	{
+	}
+
+	public function create(): SignatureMapProvider
+	{
+		if ($this->phpVersion->getVersionId() < 80000) {
+			return $this->functionSignatureMapProvider;
+		}
+
+		return $this->php8SignatureMapProvider;
+	}
+
+}
diff --git a/src/Reflection/TrivialParametersAcceptor.php b/src/Reflection/TrivialParametersAcceptor.php
new file mode 100644
index 00000000..f3ae9b19
--- /dev/null
+++ b/src/Reflection/TrivialParametersAcceptor.php
@@ -0,0 +1,102 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class TrivialParametersAcceptor implements ExtendedParametersAcceptor, CallableParametersAcceptor
+{
+
+	/** @api */
+	public function __construct(private string $callableName = 'callable')
+	{
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return TemplateTypeVarianceMap::createEmpty();
+	}
+
+	public function getParameters(): array
+	{
+		return [];
+	}
+
+	public function isVariadic(): bool
+	{
+		return true;
+	}
+
+	public function getReturnType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getPhpDocReturnType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getNativeReturnType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getThrowPoints(): array
+	{
+		return [];
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getImpurePoints(): array
+	{
+		return [
+			new SimpleImpurePoint(
+				'functionCall',
+				sprintf('call to a %s', $this->callableName),
+				false,
+			),
+		];
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return [];
+	}
+
+	public function getUsedVariables(): array
+	{
+		return [];
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+}
diff --git a/src/Reflection/Type/CallbackUnresolvedMethodPrototypeReflection.php b/src/Reflection/Type/CallbackUnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..98b63545
--- /dev/null
+++ b/src/Reflection/Type/CallbackUnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,145 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Dummy\ChangedTypeMethodReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\Reflection\ResolvedMethodReflection;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+
+final class CallbackUnresolvedMethodPrototypeReflection implements UnresolvedMethodPrototypeReflection
+{
+
+	/** @var callable(Type): Type */
+	private $transformStaticTypeCallback;
+
+	private ?ExtendedMethodReflection $transformedMethod = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param callable(Type): Type $transformStaticTypeCallback
+	 */
+	public function __construct(
+		private ExtendedMethodReflection $methodReflection,
+		private ClassReflection $resolvedDeclaringClass,
+		private bool $resolveTemplateTypeMapToBounds,
+		callable $transformStaticTypeCallback,
+	)
+	{
+		$this->transformStaticTypeCallback = $transformStaticTypeCallback;
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedMethodPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self(
+			$this->methodReflection,
+			$this->resolvedDeclaringClass,
+			false,
+			$this->transformStaticTypeCallback,
+		);
+	}
+
+	public function getNakedMethod(): ExtendedMethodReflection
+	{
+		return $this->methodReflection;
+	}
+
+	public function getTransformedMethod(): ExtendedMethodReflection
+	{
+		if ($this->transformedMethod !== null) {
+			return $this->transformedMethod;
+		}
+		$templateTypeMap = $this->resolvedDeclaringClass->getActiveTemplateTypeMap();
+		$callSiteVarianceMap = $this->resolvedDeclaringClass->getCallSiteVarianceMap();
+
+		return $this->transformedMethod = new ResolvedMethodReflection(
+			$this->transformMethodWithStaticType($this->resolvedDeclaringClass, $this->methodReflection),
+			$this->resolveTemplateTypeMapToBounds ? $templateTypeMap->resolveToBounds() : $templateTypeMap,
+			$callSiteVarianceMap,
+		);
+	}
+
+	public function withCalledOnType(Type $type): UnresolvedMethodPrototypeReflection
+	{
+		return new CalledOnTypeUnresolvedMethodPrototypeReflection(
+			$this->methodReflection,
+			$this->resolvedDeclaringClass,
+			$this->resolveTemplateTypeMapToBounds,
+			$type,
+		);
+	}
+
+	private function transformMethodWithStaticType(ClassReflection $declaringClass, ExtendedMethodReflection $method): ExtendedMethodReflection
+	{
+		$selfOutType = $method->getSelfOutType() !== null ? $this->transformStaticType($method->getSelfOutType()) : null;
+		$variantFn = function (ExtendedParametersAcceptor $acceptor) use (&$selfOutType): ExtendedParametersAcceptor {
+			$originalReturnType = $acceptor->getReturnType();
+			if ($originalReturnType instanceof ThisType && $selfOutType !== null) {
+				$returnType = TypeCombinator::intersect($selfOutType, $this->transformStaticType($originalReturnType));
+				$selfOutType = $returnType;
+			} else {
+				$returnType = $this->transformStaticType($originalReturnType);
+			}
+			return new ExtendedFunctionVariant(
+				$acceptor->getTemplateTypeMap(),
+				$acceptor->getResolvedTemplateTypeMap(),
+				array_map(
+					fn (ExtendedParameterReflection $parameter): ExtendedParameterReflection => new ExtendedDummyParameter(
+						$parameter->getName(),
+						$this->transformStaticType($parameter->getType()),
+						$parameter->isOptional(),
+						$parameter->passedByReference(),
+						$parameter->isVariadic(),
+						$parameter->getDefaultValue(),
+						$parameter->getNativeType(),
+						$this->transformStaticType($parameter->getPhpDocType()),
+						$parameter->getOutType() !== null ? $this->transformStaticType($parameter->getOutType()) : null,
+						$parameter->isImmediatelyInvokedCallable(),
+						$parameter->getClosureThisType() !== null ? $this->transformStaticType($parameter->getClosureThisType()) : null,
+						$parameter->getAttributes(),
+					),
+					$acceptor->getParameters(),
+				),
+				$acceptor->isVariadic(),
+				$returnType,
+				$this->transformStaticType($acceptor->getPhpDocReturnType()),
+				$this->transformStaticType($acceptor->getNativeReturnType()),
+				$acceptor->getCallSiteVarianceMap(),
+			);
+		};
+		$variants = array_map($variantFn, $method->getVariants());
+		$namedArgumentVariants = $method->getNamedArgumentsVariants();
+		$namedArgumentVariants = $namedArgumentVariants !== null
+			? array_map($variantFn, $namedArgumentVariants)
+			: null;
+
+		return new ChangedTypeMethodReflection(
+			$declaringClass,
+			$method,
+			$variants,
+			$namedArgumentVariants,
+			$selfOutType,
+		);
+	}
+
+	private function transformStaticType(Type $type): Type
+	{
+		$callback = $this->transformStaticTypeCallback;
+		return $callback($type);
+	}
+
+}
diff --git a/src/Reflection/Type/CallbackUnresolvedPropertyPrototypeReflection.php b/src/Reflection/Type/CallbackUnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..69b06327
--- /dev/null
+++ b/src/Reflection/Type/CallbackUnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Dummy\ChangedTypePropertyReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\ResolvedPropertyReflection;
+use PHPStan\Type\Type;
+
+final class CallbackUnresolvedPropertyPrototypeReflection implements UnresolvedPropertyPrototypeReflection
+{
+
+	/** @var callable(Type): Type */
+	private $transformStaticTypeCallback;
+
+	private ?ExtendedPropertyReflection $transformedProperty = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param callable(Type): Type $transformStaticTypeCallback
+	 */
+	public function __construct(
+		private ExtendedPropertyReflection $propertyReflection,
+		private ClassReflection $resolvedDeclaringClass,
+		private bool $resolveTemplateTypeMapToBounds,
+		callable $transformStaticTypeCallback,
+	)
+	{
+		$this->transformStaticTypeCallback = $transformStaticTypeCallback;
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedPropertyPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self(
+			$this->propertyReflection,
+			$this->resolvedDeclaringClass,
+			false,
+			$this->transformStaticTypeCallback,
+		);
+	}
+
+	public function getNakedProperty(): ExtendedPropertyReflection
+	{
+		return $this->propertyReflection;
+	}
+
+	public function getTransformedProperty(): ExtendedPropertyReflection
+	{
+		if ($this->transformedProperty !== null) {
+			return $this->transformedProperty;
+		}
+		$templateTypeMap = $this->resolvedDeclaringClass->getActiveTemplateTypeMap();
+		$callSiteVarianceMap = $this->resolvedDeclaringClass->getCallSiteVarianceMap();
+
+		return $this->transformedProperty = new ResolvedPropertyReflection(
+			$this->transformPropertyWithStaticType($this->resolvedDeclaringClass, $this->propertyReflection),
+			$this->resolveTemplateTypeMapToBounds ? $templateTypeMap->resolveToBounds() : $templateTypeMap,
+			$callSiteVarianceMap,
+		);
+	}
+
+	public function withFechedOnType(Type $type): UnresolvedPropertyPrototypeReflection
+	{
+		return new CalledOnTypeUnresolvedPropertyPrototypeReflection(
+			$this->propertyReflection,
+			$this->resolvedDeclaringClass,
+			$this->resolveTemplateTypeMapToBounds,
+			$type,
+		);
+	}
+
+	private function transformPropertyWithStaticType(ClassReflection $declaringClass, ExtendedPropertyReflection $property): ExtendedPropertyReflection
+	{
+		$readableType = $this->transformStaticType($property->getReadableType());
+		$writableType = $this->transformStaticType($property->getWritableType());
+		$phpDocType = $this->transformStaticType($property->getPhpDocType());
+		$nativeType = $this->transformStaticType($property->getNativeType());
+
+		return new ChangedTypePropertyReflection($declaringClass, $property, $readableType, $writableType, $phpDocType, $nativeType);
+	}
+
+	private function transformStaticType(Type $type): Type
+	{
+		$callback = $this->transformStaticTypeCallback;
+		return $callback($type);
+	}
+
+}
diff --git a/src/Reflection/Type/CalledOnTypeUnresolvedMethodPrototypeReflection.php b/src/Reflection/Type/CalledOnTypeUnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..c2f81f41
--- /dev/null
+++ b/src/Reflection/Type/CalledOnTypeUnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,155 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Dummy\ChangedTypeMethodReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\Reflection\ResolvedMethodReflection;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use function array_map;
+use function count;
+
+final class CalledOnTypeUnresolvedMethodPrototypeReflection implements UnresolvedMethodPrototypeReflection
+{
+
+	private ?ExtendedMethodReflection $transformedMethod = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	public function __construct(
+		private ExtendedMethodReflection $methodReflection,
+		private ClassReflection $resolvedDeclaringClass,
+		private bool $resolveTemplateTypeMapToBounds,
+		private Type $calledOnType,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedMethodPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self(
+			$this->methodReflection,
+			$this->resolvedDeclaringClass,
+			false,
+			$this->calledOnType,
+		);
+	}
+
+	public function getNakedMethod(): ExtendedMethodReflection
+	{
+		return $this->methodReflection;
+	}
+
+	public function getTransformedMethod(): ExtendedMethodReflection
+	{
+		if ($this->transformedMethod !== null) {
+			return $this->transformedMethod;
+		}
+		$templateTypeMap = $this->resolvedDeclaringClass->getActiveTemplateTypeMap();
+		$callSiteVarianceMap = $this->resolvedDeclaringClass->getCallSiteVarianceMap();
+
+		return $this->transformedMethod = new ResolvedMethodReflection(
+			$this->transformMethodWithStaticType($this->resolvedDeclaringClass, $this->methodReflection),
+			$this->resolveTemplateTypeMapToBounds ? $templateTypeMap->resolveToBounds() : $templateTypeMap,
+			$callSiteVarianceMap,
+		);
+	}
+
+	public function withCalledOnType(Type $type): UnresolvedMethodPrototypeReflection
+	{
+		return new self(
+			$this->methodReflection,
+			$this->resolvedDeclaringClass,
+			$this->resolveTemplateTypeMapToBounds,
+			$type,
+		);
+	}
+
+	private function transformMethodWithStaticType(ClassReflection $declaringClass, ExtendedMethodReflection $method): ExtendedMethodReflection
+	{
+		$selfOutType = $method->getSelfOutType() !== null ? $this->transformStaticType($method->getSelfOutType()) : null;
+		$variantFn = function (ExtendedParametersAcceptor $acceptor) use ($selfOutType): ExtendedParametersAcceptor {
+			$originalReturnType = $acceptor->getReturnType();
+			if ($originalReturnType instanceof ThisType && $selfOutType !== null) {
+				$returnType = $selfOutType;
+			} else {
+				$returnType = $this->transformStaticType($originalReturnType);
+			}
+			return new ExtendedFunctionVariant(
+				$acceptor->getTemplateTypeMap(),
+				$acceptor->getResolvedTemplateTypeMap(),
+				array_map(
+					fn (ExtendedParameterReflection $parameter): ExtendedParameterReflection => new ExtendedDummyParameter(
+						$parameter->getName(),
+						$this->transformStaticType($parameter->getType()),
+						$parameter->isOptional(),
+						$parameter->passedByReference(),
+						$parameter->isVariadic(),
+						$parameter->getDefaultValue(),
+						$parameter->getNativeType(),
+						$this->transformStaticType($parameter->getPhpDocType()),
+						$parameter->getOutType() !== null ? $this->transformStaticType($parameter->getOutType()) : null,
+						$parameter->isImmediatelyInvokedCallable(),
+						$parameter->getClosureThisType() !== null ? $this->transformStaticType($parameter->getClosureThisType()) : null,
+						$parameter->getAttributes(),
+					),
+					$acceptor->getParameters(),
+				),
+				$acceptor->isVariadic(),
+				$returnType,
+				$this->transformStaticType($acceptor->getPhpDocReturnType()),
+				$this->transformStaticType($acceptor->getNativeReturnType()),
+				$acceptor->getCallSiteVarianceMap(),
+			);
+		};
+		$variants = array_map($variantFn, $method->getVariants());
+		$namedArgumentsVariants = $method->getNamedArgumentsVariants();
+		$namedArgumentsVariants = $namedArgumentsVariants !== null
+			? array_map($variantFn, $namedArgumentsVariants)
+			: null;
+
+		return new ChangedTypeMethodReflection(
+			$declaringClass,
+			$method,
+			$variants,
+			$namedArgumentsVariants,
+			$selfOutType,
+		);
+	}
+
+	private function transformStaticType(Type $type): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+			if ($type instanceof GenericStaticType) {
+				$calledOnTypeReflections = $this->calledOnType->getObjectClassReflections();
+				if (count($calledOnTypeReflections) === 1) {
+					$calledOnTypeReflection = $calledOnTypeReflections[0];
+
+					return $traverse($type->changeBaseClass($calledOnTypeReflection)->getStaticObjectType());
+				}
+
+				return $this->calledOnType;
+			}
+			if ($type instanceof StaticType) {
+				return $this->calledOnType;
+			}
+
+			return $traverse($type);
+		});
+	}
+
+}
diff --git a/src/Reflection/Type/CalledOnTypeUnresolvedPropertyPrototypeReflection.php b/src/Reflection/Type/CalledOnTypeUnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..95f0ba05
--- /dev/null
+++ b/src/Reflection/Type/CalledOnTypeUnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Dummy\ChangedTypePropertyReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\ResolvedPropertyReflection;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+
+final class CalledOnTypeUnresolvedPropertyPrototypeReflection implements UnresolvedPropertyPrototypeReflection
+{
+
+	private ?ExtendedPropertyReflection $transformedProperty = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	public function __construct(
+		private ExtendedPropertyReflection $propertyReflection,
+		private ClassReflection $resolvedDeclaringClass,
+		private bool $resolveTemplateTypeMapToBounds,
+		private Type $fetchedOnType,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedPropertyPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self(
+			$this->propertyReflection,
+			$this->resolvedDeclaringClass,
+			false,
+			$this->fetchedOnType,
+		);
+	}
+
+	public function getNakedProperty(): ExtendedPropertyReflection
+	{
+		return $this->propertyReflection;
+	}
+
+	public function getTransformedProperty(): ExtendedPropertyReflection
+	{
+		if ($this->transformedProperty !== null) {
+			return $this->transformedProperty;
+		}
+		$templateTypeMap = $this->resolvedDeclaringClass->getActiveTemplateTypeMap();
+		$callSiteVarianceMap = $this->resolvedDeclaringClass->getCallSiteVarianceMap();
+
+		return $this->transformedProperty = new ResolvedPropertyReflection(
+			$this->transformPropertyWithStaticType($this->resolvedDeclaringClass, $this->propertyReflection),
+			$this->resolveTemplateTypeMapToBounds ? $templateTypeMap->resolveToBounds() : $templateTypeMap,
+			$callSiteVarianceMap,
+		);
+	}
+
+	public function withFechedOnType(Type $type): UnresolvedPropertyPrototypeReflection
+	{
+		return new self(
+			$this->propertyReflection,
+			$this->resolvedDeclaringClass,
+			$this->resolveTemplateTypeMapToBounds,
+			$type,
+		);
+	}
+
+	private function transformPropertyWithStaticType(ClassReflection $declaringClass, ExtendedPropertyReflection $property): ExtendedPropertyReflection
+	{
+		$readableType = $this->transformStaticType($property->getReadableType());
+		$writableType = $this->transformStaticType($property->getWritableType());
+		$phpDocType = $this->transformStaticType($property->getPhpDocType());
+		$nativeType = $this->transformStaticType($property->getNativeType());
+
+		return new ChangedTypePropertyReflection($declaringClass, $property, $readableType, $writableType, $phpDocType, $nativeType);
+	}
+
+	private function transformStaticType(Type $type): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+			if ($type instanceof StaticType) {
+				return $this->fetchedOnType;
+			}
+
+			return $traverse($type);
+		});
+	}
+
+}
diff --git a/src/Reflection/Type/IntersectionTypeMethodReflection.php b/src/Reflection/Type/IntersectionTypeMethodReflection.php
new file mode 100644
index 00000000..b64a778b
--- /dev/null
+++ b/src/Reflection/Type/IntersectionTypeMethodReflection.php
@@ -0,0 +1,227 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function count;
+use function implode;
+use function is_bool;
+
+final class IntersectionTypeMethodReflection implements ExtendedMethodReflection
+{
+
+	/**
+	 * @param ExtendedMethodReflection[] $methods
+	 */
+	public function __construct(private string $methodName, private array $methods)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->methods[0]->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		foreach ($this->methods as $method) {
+			if ($method->isStatic()) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		foreach ($this->methods as $method) {
+			if (!$method->isPrivate()) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function isPublic(): bool
+	{
+		foreach ($this->methods as $method) {
+			if ($method->isPublic()) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function getName(): string
+	{
+		return $this->methodName;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function getVariants(): array
+	{
+		$returnType = TypeCombinator::intersect(...array_map(static fn (MethodReflection $method): Type => TypeCombinator::intersect(...array_map(static fn (ParametersAcceptor $acceptor): Type => $acceptor->getReturnType(), $method->getVariants())), $this->methods));
+		$phpDocReturnType = TypeCombinator::intersect(...array_map(static fn (MethodReflection $method): Type => TypeCombinator::intersect(...array_map(static fn (ParametersAcceptor $acceptor): Type => $acceptor->getPhpDocReturnType(), $method->getVariants())), $this->methods));
+		$nativeReturnType = TypeCombinator::intersect(...array_map(static fn (MethodReflection $method): Type => TypeCombinator::intersect(...array_map(static fn (ParametersAcceptor $acceptor): Type => $acceptor->getNativeReturnType(), $method->getVariants())), $this->methods));
+
+		return array_map(static fn (ExtendedParametersAcceptor $acceptor): ExtendedParametersAcceptor => new ExtendedFunctionVariant(
+			$acceptor->getTemplateTypeMap(),
+			$acceptor->getResolvedTemplateTypeMap(),
+			$acceptor->getParameters(),
+			$acceptor->isVariadic(),
+			$returnType,
+			$phpDocReturnType,
+			$nativeReturnType,
+			$acceptor->getCallSiteVarianceMap(),
+		), $this->methods[0]->getVariants());
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		$variants = $this->getVariants();
+		if (count($variants) !== 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $variants[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		$descriptions = [];
+		foreach ($this->methods as $method) {
+			if (!$method->isDeprecated()->yes()) {
+				continue;
+			}
+			$description = $method->getDeprecatedDescription();
+			if ($description === null) {
+				continue;
+			}
+
+			$descriptions[] = $description;
+		}
+
+		if (count($descriptions) === 0) {
+			return null;
+		}
+
+		return implode(' ', $descriptions);
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isFinal());
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->isFinalByKeyword());
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isInternal());
+	}
+
+	public function getThrowType(): ?Type
+	{
+		$types = [];
+
+		foreach ($this->methods as $method) {
+			$type = $method->getThrowType();
+			if ($type === null) {
+				continue;
+			}
+
+			$types[] = $type;
+		}
+
+		if (count($types) === 0) {
+			return null;
+		}
+
+		return TypeCombinator::intersect(...$types);
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->hasSideEffects());
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->isPure());
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		$assertions = Assertions::createEmpty();
+
+		foreach ($this->methods as $method) {
+			$assertions = $assertions->intersectWith($method->getAsserts());
+		}
+
+		return $assertions;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->returnsByReference());
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => is_bool($method->isAbstract()) ? TrinaryLogic::createFromBoolean($method->isAbstract()) : $method->isAbstract());
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->methods[0]->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Type/IntersectionTypePropertyReflection.php b/src/Reflection/Type/IntersectionTypePropertyReflection.php
new file mode 100644
index 00000000..7fc42795
--- /dev/null
+++ b/src/Reflection/Type/IntersectionTypePropertyReflection.php
@@ -0,0 +1,199 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function count;
+use function implode;
+
+final class IntersectionTypePropertyReflection implements ExtendedPropertyReflection
+{
+
+	/**
+	 * @param ExtendedPropertyReflection[] $properties
+	 */
+	public function __construct(private array $properties)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->properties[0]->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isStatic());
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPrivate());
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPublic());
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		$descriptions = [];
+		foreach ($this->properties as $property) {
+			if (!$property->isDeprecated()->yes()) {
+				continue;
+			}
+			$description = $property->getDeprecatedDescription();
+			if ($description === null) {
+				continue;
+			}
+
+			$descriptions[] = $description;
+		}
+
+		if (count($descriptions) === 0) {
+			return null;
+		}
+
+		return implode(' ', $descriptions);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isInternal());
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasPhpDocType());
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return TypeCombinator::intersect(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getPhpDocType(), $this->properties));
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasNativeType());
+	}
+
+	public function getNativeType(): Type
+	{
+		return TypeCombinator::intersect(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getNativeType(), $this->properties));
+	}
+
+	public function getReadableType(): Type
+	{
+		return TypeCombinator::intersect(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getReadableType(), $this->properties));
+	}
+
+	public function getWritableType(): Type
+	{
+		return TypeCombinator::intersect(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getWritableType(), $this->properties));
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->canChangeTypeAfterAssignment());
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isReadable());
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isWritable());
+	}
+
+	/**
+	 * @param callable(ExtendedPropertyReflection): bool $cb
+	 */
+	private function computeResult(callable $cb): bool
+	{
+		$result = false;
+		foreach ($this->properties as $property) {
+			$result = $result || $cb($property);
+		}
+
+		return $result;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isAbstract());
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isFinal());
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isVirtual());
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasHook($hookType));
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		$hooks = [];
+		foreach ($this->properties as $property) {
+			if (!$property->hasHook($hookType)) {
+				continue;
+			}
+
+			$hooks[] = $property->getHook($hookType);
+		}
+
+		if (count($hooks) === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (count($hooks) === 1) {
+			return $hooks[0];
+		}
+
+		return new IntersectionTypeMethodReflection($hooks[0]->getName(), $hooks);
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isProtectedSet());
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPrivateSet());
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->properties[0]->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Type/IntersectionTypeUnresolvedMethodPrototypeReflection.php b/src/Reflection/Type/IntersectionTypeUnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..b999cb29
--- /dev/null
+++ b/src/Reflection/Type/IntersectionTypeUnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class IntersectionTypeUnresolvedMethodPrototypeReflection implements UnresolvedMethodPrototypeReflection
+{
+
+	private ?ExtendedMethodReflection $transformedMethod = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param UnresolvedMethodPrototypeReflection[] $methodPrototypes
+	 */
+	public function __construct(
+		private string $methodName,
+		private array $methodPrototypes,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedMethodPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self($this->methodName, array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): UnresolvedMethodPrototypeReflection => $prototype->doNotResolveTemplateTypeMapToBounds(), $this->methodPrototypes));
+	}
+
+	public function getNakedMethod(): ExtendedMethodReflection
+	{
+		return $this->getTransformedMethod();
+	}
+
+	public function getTransformedMethod(): ExtendedMethodReflection
+	{
+		if ($this->transformedMethod !== null) {
+			return $this->transformedMethod;
+		}
+		$methods = array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): MethodReflection => $prototype->getTransformedMethod(), $this->methodPrototypes);
+
+		return $this->transformedMethod = new IntersectionTypeMethodReflection($this->methodName, $methods);
+	}
+
+	public function withCalledOnType(Type $type): UnresolvedMethodPrototypeReflection
+	{
+		return new self($this->methodName, array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): UnresolvedMethodPrototypeReflection => $prototype->withCalledOnType($type), $this->methodPrototypes));
+	}
+
+}
diff --git a/src/Reflection/Type/IntersectionTypeUnresolvedPropertyPrototypeReflection.php b/src/Reflection/Type/IntersectionTypeUnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..d3a0f490
--- /dev/null
+++ b/src/Reflection/Type/IntersectionTypeUnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class IntersectionTypeUnresolvedPropertyPrototypeReflection implements UnresolvedPropertyPrototypeReflection
+{
+
+	private ?ExtendedPropertyReflection $transformedProperty = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param UnresolvedPropertyPrototypeReflection[] $propertyPrototypes
+	 */
+	public function __construct(
+		private string $propertyName,
+		private array $propertyPrototypes,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedPropertyPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self($this->propertyName, array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): UnresolvedPropertyPrototypeReflection => $prototype->doNotResolveTemplateTypeMapToBounds(), $this->propertyPrototypes));
+	}
+
+	public function getNakedProperty(): ExtendedPropertyReflection
+	{
+		return $this->getTransformedProperty();
+	}
+
+	public function getTransformedProperty(): ExtendedPropertyReflection
+	{
+		if ($this->transformedProperty !== null) {
+			return $this->transformedProperty;
+		}
+		$properties = array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): PropertyReflection => $prototype->getTransformedProperty(), $this->propertyPrototypes);
+
+		return $this->transformedProperty = new IntersectionTypePropertyReflection($properties);
+	}
+
+	public function withFechedOnType(Type $type): UnresolvedPropertyPrototypeReflection
+	{
+		return new self($this->propertyName, array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): UnresolvedPropertyPrototypeReflection => $prototype->withFechedOnType($type), $this->propertyPrototypes));
+	}
+
+}
diff --git a/src/Reflection/Type/UnionTypeMethodReflection.php b/src/Reflection/Type/UnionTypeMethodReflection.php
new file mode 100644
index 00000000..58edd1e0
--- /dev/null
+++ b/src/Reflection/Type/UnionTypeMethodReflection.php
@@ -0,0 +1,204 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\Assertions;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function array_merge;
+use function count;
+use function implode;
+use function is_bool;
+
+final class UnionTypeMethodReflection implements ExtendedMethodReflection
+{
+
+	/**
+	 * @param ExtendedMethodReflection[] $methods
+	 */
+	public function __construct(private string $methodName, private array $methods)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->methods[0]->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		foreach ($this->methods as $method) {
+			if (!$method->isStatic()) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function isPrivate(): bool
+	{
+		foreach ($this->methods as $method) {
+			if ($method->isPrivate()) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		foreach ($this->methods as $method) {
+			if (!$method->isPublic()) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function getName(): string
+	{
+		return $this->methodName;
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this;
+	}
+
+	public function getVariants(): array
+	{
+		$variants = array_merge(...array_map(static fn (MethodReflection $method) => $method->getVariants(), $this->methods));
+
+		return [ParametersAcceptorSelector::combineAcceptors($variants)];
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		$descriptions = [];
+		foreach ($this->methods as $method) {
+			if (!$method->isDeprecated()->yes()) {
+				continue;
+			}
+			$description = $method->getDeprecatedDescription();
+			if ($description === null) {
+				continue;
+			}
+
+			$descriptions[] = $description;
+		}
+
+		if (count($descriptions) === 0) {
+			return null;
+		}
+
+		return implode(' ', $descriptions);
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isFinal());
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->isFinalByKeyword());
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->isInternal());
+	}
+
+	public function getThrowType(): ?Type
+	{
+		$types = [];
+
+		foreach ($this->methods as $method) {
+			$type = $method->getThrowType();
+			if ($type === null) {
+				continue;
+			}
+
+			$types[] = $type;
+		}
+
+		if (count($types) === 0) {
+			return null;
+		}
+
+		return TypeCombinator::union(...$types);
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (MethodReflection $method): TrinaryLogic => $method->hasSideEffects());
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->isPure());
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => $method->returnsByReference());
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->methods, static fn (ExtendedMethodReflection $method): TrinaryLogic => is_bool($method->isAbstract()) ? TrinaryLogic::createFromBoolean($method->isAbstract()) : $method->isAbstract());
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->methods[0]->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Type/UnionTypePropertyReflection.php b/src/Reflection/Type/UnionTypePropertyReflection.php
new file mode 100644
index 00000000..3f7a435e
--- /dev/null
+++ b/src/Reflection/Type/UnionTypePropertyReflection.php
@@ -0,0 +1,199 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function count;
+use function implode;
+
+final class UnionTypePropertyReflection implements ExtendedPropertyReflection
+{
+
+	/**
+	 * @param ExtendedPropertyReflection[] $properties
+	 */
+	public function __construct(private array $properties)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->properties[0]->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isStatic());
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPrivate());
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPublic());
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isDeprecated());
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		$descriptions = [];
+		foreach ($this->properties as $property) {
+			if (!$property->isDeprecated()->yes()) {
+				continue;
+			}
+			$description = $property->getDeprecatedDescription();
+			if ($description === null) {
+				continue;
+			}
+
+			$descriptions[] = $description;
+		}
+
+		if (count($descriptions) === 0) {
+			return null;
+		}
+
+		return implode(' ', $descriptions);
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isInternal());
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasPhpDocType());
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return TypeCombinator::union(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getPhpDocType(), $this->properties));
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasNativeType());
+	}
+
+	public function getNativeType(): Type
+	{
+		return TypeCombinator::union(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getNativeType(), $this->properties));
+	}
+
+	public function getReadableType(): Type
+	{
+		return TypeCombinator::union(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getReadableType(), $this->properties));
+	}
+
+	public function getWritableType(): Type
+	{
+		return TypeCombinator::union(...array_map(static fn (ExtendedPropertyReflection $property): Type => $property->getWritableType(), $this->properties));
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->canChangeTypeAfterAssignment());
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isReadable());
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isWritable());
+	}
+
+	/**
+	 * @param callable(ExtendedPropertyReflection): bool $cb
+	 */
+	private function computeResult(callable $cb): bool
+	{
+		$result = true;
+		foreach ($this->properties as $property) {
+			$result = $result && $cb($property);
+		}
+
+		return $result;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isAbstract());
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isFinal());
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isVirtual());
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->hasHook($hookType));
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		$hooks = [];
+		foreach ($this->properties as $property) {
+			if (!$property->hasHook($hookType)) {
+				continue;
+			}
+
+			$hooks[] = $property->getHook($hookType);
+		}
+
+		if (count($hooks) === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (count($hooks) === 1) {
+			return $hooks[0];
+		}
+
+		return new UnionTypeMethodReflection($hooks[0]->getName(), $hooks);
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isProtectedSet());
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->computeResult(static fn (ExtendedPropertyReflection $property) => $property->isPrivateSet());
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->properties[0]->getAttributes();
+	}
+
+}
diff --git a/src/Reflection/Type/UnionTypeUnresolvedMethodPrototypeReflection.php b/src/Reflection/Type/UnionTypeUnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..c1905241
--- /dev/null
+++ b/src/Reflection/Type/UnionTypeUnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class UnionTypeUnresolvedMethodPrototypeReflection implements UnresolvedMethodPrototypeReflection
+{
+
+	private ?ExtendedMethodReflection $transformedMethod = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param UnresolvedMethodPrototypeReflection[] $methodPrototypes
+	 */
+	public function __construct(
+		private string $methodName,
+		private array $methodPrototypes,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedMethodPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self($this->methodName, array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): UnresolvedMethodPrototypeReflection => $prototype->doNotResolveTemplateTypeMapToBounds(), $this->methodPrototypes));
+	}
+
+	public function getNakedMethod(): ExtendedMethodReflection
+	{
+		return $this->getTransformedMethod();
+	}
+
+	public function getTransformedMethod(): ExtendedMethodReflection
+	{
+		if ($this->transformedMethod !== null) {
+			return $this->transformedMethod;
+		}
+
+		$methods = array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): MethodReflection => $prototype->getTransformedMethod(), $this->methodPrototypes);
+
+		return $this->transformedMethod = new UnionTypeMethodReflection($this->methodName, $methods);
+	}
+
+	public function withCalledOnType(Type $type): UnresolvedMethodPrototypeReflection
+	{
+		return new self($this->methodName, array_map(static fn (UnresolvedMethodPrototypeReflection $prototype): UnresolvedMethodPrototypeReflection => $prototype->withCalledOnType($type), $this->methodPrototypes));
+	}
+
+}
diff --git a/src/Reflection/Type/UnionTypeUnresolvedPropertyPrototypeReflection.php b/src/Reflection/Type/UnionTypeUnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..7fc3a404
--- /dev/null
+++ b/src/Reflection/Type/UnionTypeUnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class UnionTypeUnresolvedPropertyPrototypeReflection implements UnresolvedPropertyPrototypeReflection
+{
+
+	private ?ExtendedPropertyReflection $transformedProperty = null;
+
+	private ?self $cachedDoNotResolveTemplateTypeMapToBounds = null;
+
+	/**
+	 * @param UnresolvedPropertyPrototypeReflection[] $propertyPrototypes
+	 */
+	public function __construct(
+		private string $propertyName,
+		private array $propertyPrototypes,
+	)
+	{
+	}
+
+	public function doNotResolveTemplateTypeMapToBounds(): UnresolvedPropertyPrototypeReflection
+	{
+		if ($this->cachedDoNotResolveTemplateTypeMapToBounds !== null) {
+			return $this->cachedDoNotResolveTemplateTypeMapToBounds;
+		}
+		return $this->cachedDoNotResolveTemplateTypeMapToBounds = new self($this->propertyName, array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): UnresolvedPropertyPrototypeReflection => $prototype->doNotResolveTemplateTypeMapToBounds(), $this->propertyPrototypes));
+	}
+
+	public function getNakedProperty(): ExtendedPropertyReflection
+	{
+		return $this->getTransformedProperty();
+	}
+
+	public function getTransformedProperty(): ExtendedPropertyReflection
+	{
+		if ($this->transformedProperty !== null) {
+			return $this->transformedProperty;
+		}
+
+		$methods = array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): PropertyReflection => $prototype->getTransformedProperty(), $this->propertyPrototypes);
+
+		return $this->transformedProperty = new UnionTypePropertyReflection($methods);
+	}
+
+	public function withFechedOnType(Type $type): UnresolvedPropertyPrototypeReflection
+	{
+		return new self($this->propertyName, array_map(static fn (UnresolvedPropertyPrototypeReflection $prototype): UnresolvedPropertyPrototypeReflection => $prototype->withFechedOnType($type), $this->propertyPrototypes));
+	}
+
+}
diff --git a/src/Reflection/Type/UnresolvedMethodPrototypeReflection.php b/src/Reflection/Type/UnresolvedMethodPrototypeReflection.php
new file mode 100644
index 00000000..2959836a
--- /dev/null
+++ b/src/Reflection/Type/UnresolvedMethodPrototypeReflection.php
@@ -0,0 +1,20 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Type\Type;
+
+interface UnresolvedMethodPrototypeReflection
+{
+
+	public function doNotResolveTemplateTypeMapToBounds(): self;
+
+	public function getNakedMethod(): ExtendedMethodReflection;
+
+	public function getTransformedMethod(): ExtendedMethodReflection;
+
+	public function withCalledOnType(Type $type): self;
+
+}
diff --git a/src/Reflection/Type/UnresolvedPropertyPrototypeReflection.php b/src/Reflection/Type/UnresolvedPropertyPrototypeReflection.php
new file mode 100644
index 00000000..593402c9
--- /dev/null
+++ b/src/Reflection/Type/UnresolvedPropertyPrototypeReflection.php
@@ -0,0 +1,20 @@
+<?php 
+
+namespace PHPStan\Reflection\Type;
+return;
+
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Type\Type;
+
+interface UnresolvedPropertyPrototypeReflection
+{
+
+	public function doNotResolveTemplateTypeMapToBounds(): self;
+
+	public function getNakedProperty(): ExtendedPropertyReflection;
+
+	public function getTransformedProperty(): ExtendedPropertyReflection;
+
+	public function withFechedOnType(Type $type): self;
+
+}
diff --git a/src/Reflection/WrappedExtendedMethodReflection.php b/src/Reflection/WrappedExtendedMethodReflection.php
new file mode 100644
index 00000000..afb8926a
--- /dev/null
+++ b/src/Reflection/WrappedExtendedMethodReflection.php
@@ -0,0 +1,172 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\Reflection\Php\ExtendedDummyParameter;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class WrappedExtendedMethodReflection implements ExtendedMethodReflection
+{
+
+	public function __construct(private MethodReflection $method)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->method->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->method->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->method->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->method->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->method->getDocComment();
+	}
+
+	public function getName(): string
+	{
+		return $this->method->getName();
+	}
+
+	public function getPrototype(): ClassMemberReflection
+	{
+		return $this->method->getPrototype();
+	}
+
+	public function getVariants(): array
+	{
+		$variants = [];
+		foreach ($this->method->getVariants() as $variant) {
+			if ($variant instanceof ExtendedParametersAcceptor) {
+				$variants[] = $variant;
+				continue;
+			}
+
+			$variants[] = new ExtendedFunctionVariant(
+				$variant->getTemplateTypeMap(),
+				$variant->getResolvedTemplateTypeMap(),
+				array_map(static fn (ParameterReflection $parameter): ExtendedParameterReflection => $parameter instanceof ExtendedParameterReflection ? $parameter : new ExtendedDummyParameter(
+					$parameter->getName(),
+					$parameter->getType(),
+					$parameter->isOptional(),
+					$parameter->passedByReference(),
+					$parameter->isVariadic(),
+					$parameter->getDefaultValue(),
+					new MixedType(),
+					$parameter->getType(),
+					null,
+					TrinaryLogic::createMaybe(),
+					null,
+					[],
+				), $variant->getParameters()),
+				$variant->isVariadic(),
+				$variant->getReturnType(),
+				$variant->getReturnType(),
+				new MixedType(),
+				TemplateTypeVarianceMap::createEmpty(),
+			);
+		}
+
+		return $variants;
+	}
+
+	public function getOnlyVariant(): ExtendedParametersAcceptor
+	{
+		return $this->getVariants()[0];
+	}
+
+	public function getNamedArgumentsVariants(): ?array
+	{
+		return null;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->method->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->method->getDeprecatedDescription();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->method->isFinal();
+	}
+
+	public function isFinalByKeyword(): TrinaryLogic
+	{
+		return $this->isFinal();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->method->isInternal();
+	}
+
+	public function getThrowType(): ?Type
+	{
+		return $this->method->getThrowType();
+	}
+
+	public function hasSideEffects(): TrinaryLogic
+	{
+		return $this->method->hasSideEffects();
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getAsserts(): Assertions
+	{
+		return Assertions::createEmpty();
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->getDeclaringClass()->acceptsNamedArguments());
+	}
+
+	public function getSelfOutType(): ?Type
+	{
+		return null;
+	}
+
+	public function returnsByReference(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/WrappedExtendedPropertyReflection.php b/src/Reflection/WrappedExtendedPropertyReflection.php
new file mode 100644
index 00000000..e9143f71
--- /dev/null
+++ b/src/Reflection/WrappedExtendedPropertyReflection.php
@@ -0,0 +1,143 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+final class WrappedExtendedPropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function __construct(private PropertyReflection $property)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->property->getDeclaringClass();
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->property->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->property->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->property->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->property->getDocComment();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return false;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->property->getReadableType();
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->property->getWritableType();
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->property->canChangeTypeAfterAssignment();
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->property->isReadable();
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->property->isWritable();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->property->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->property->getDeprecatedDescription();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->property->isInternal();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Reflection/WrapperPropertyReflection.php b/src/Reflection/WrapperPropertyReflection.php
new file mode 100644
index 00000000..383aaa80
--- /dev/null
+++ b/src/Reflection/WrapperPropertyReflection.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Reflection;
+return;
+
+interface WrapperPropertyReflection extends ExtendedPropertyReflection
+{
+
+	public function getOriginalReflection(): ExtendedPropertyReflection;
+
+}
diff --git a/src/Rules/Api/ApiClassConstFetchRule.php b/src/Rules/Api/ApiClassConstFetchRule.php
new file mode 100644
index 00000000..705bdefb
--- /dev/null
+++ b/src/Rules/Api/ApiClassConstFetchRule.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @implements Rule<Node\Expr\ClassConstFetch>
+ */
+final class ApiClassConstFetchRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ClassConstFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($node->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $classReflection->getName(), $classReflection->getFileName())) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Accessing %s::%s is not covered by backward compatibility promise. The class might change in a minor PHPStan version.',
+			$classReflection->getDisplayName(),
+			$node->name->toString(),
+		))->identifier('phpstanApi.classConstant')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		$docBlock = $classReflection->getResolvedPhpDoc();
+		if ($docBlock !== null) {
+			foreach ($docBlock->getPhpDocNodes() as $phpDocNode) {
+				$apiTags = $phpDocNode->getTagsByName('@api');
+				if (count($apiTags) > 0) {
+					return [];
+				}
+			}
+		}
+
+		if ($node->name->toLowerString() === 'class') {
+			foreach ($classReflection->getNativeReflection()->getMethods() as $methodReflection) {
+				$methodDocComment = $methodReflection->getDocComment();
+				if ($methodDocComment === false) {
+					continue;
+				}
+
+				if (!str_contains($methodDocComment, '@api')) {
+					continue;
+				}
+
+				return [];
+			}
+		}
+
+		return [$ruleError];
+	}
+
+}
diff --git a/src/Rules/Api/ApiClassExtendsRule.php b/src/Rules/Api/ApiClassExtendsRule.php
new file mode 100644
index 00000000..0b4818e2
--- /dev/null
+++ b/src/Rules/Api/ApiClassExtendsRule.php
@@ -0,0 +1,77 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Class_>
+ */
+final class ApiClassExtendsRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Class_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->extends === null) {
+			return [];
+		}
+
+		$extendedClassName = (string) $node->extends;
+		if (!$this->reflectionProvider->hasClass($extendedClassName)) {
+			return [];
+		}
+
+		$extendedClassReflection = $this->reflectionProvider->getClass($extendedClassName);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $extendedClassReflection->getName(), $extendedClassReflection->getFileName())) {
+			return [];
+		}
+
+		if ($extendedClassReflection->getName() === MutatingScope::class) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Extending %s is not covered by backward compatibility promise. The class might change in a minor PHPStan version.',
+			$extendedClassReflection->getDisplayName(),
+		))->identifier('phpstanApi.class')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		$docBlock = $extendedClassReflection->getResolvedPhpDoc();
+		if ($docBlock === null) {
+			return [$ruleError];
+		}
+
+		foreach ($docBlock->getPhpDocNodes() as $phpDocNode) {
+			$apiTags = $phpDocNode->getTagsByName('@api');
+			if (count($apiTags) > 0) {
+				return [];
+			}
+		}
+
+		return [$ruleError];
+	}
+
+}
diff --git a/src/Rules/Api/ApiClassImplementsRule.php b/src/Rules/Api/ApiClassImplementsRule.php
new file mode 100644
index 00000000..9762469a
--- /dev/null
+++ b/src/Rules/Api/ApiClassImplementsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_merge;
+use function count;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Class_>
+ */
+final class ApiClassImplementsRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Class_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($node->implements as $implements) {
+			$errors = array_merge($errors, $this->checkName($scope, $implements));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkName(Scope $scope, Node\Name $name): array
+	{
+		$implementedClassName = (string) $name;
+		if (!$this->reflectionProvider->hasClass($implementedClassName)) {
+			return [];
+		}
+
+		$implementedClassReflection = $this->reflectionProvider->getClass($implementedClassName);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $implementedClassReflection->getName(), $implementedClassReflection->getFileName())) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Implementing %s is not covered by backward compatibility promise. The interface might change in a minor PHPStan version.',
+			$implementedClassReflection->getDisplayName(),
+		))->identifier('phpstanApi.interface')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		if (in_array($implementedClassReflection->getName(), BcUncoveredInterface::CLASSES, true)) {
+			return [$ruleError];
+		}
+
+		$docBlock = $implementedClassReflection->getResolvedPhpDoc();
+		if ($docBlock === null) {
+			return [$ruleError];
+		}
+
+		foreach ($docBlock->getPhpDocNodes() as $phpDocNode) {
+			$apiTags = $phpDocNode->getTagsByName('@api');
+			if (count($apiTags) > 0) {
+				return [];
+			}
+		}
+
+		return [$ruleError];
+	}
+
+}
diff --git a/src/Rules/Api/ApiInstanceofRule.php b/src/Rules/Api/ApiInstanceofRule.php
new file mode 100644
index 00000000..5635b3c9
--- /dev/null
+++ b/src/Rules/Api/ApiInstanceofRule.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\Instanceof_>
+ */
+final class ApiInstanceofRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Instanceof_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($node->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $classReflection->getName(), $classReflection->getFileName())) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Asking about instanceof %s is not covered by backward compatibility promise. The %s might change in a minor PHPStan version.',
+			$classReflection->getDisplayName(),
+			strtolower($classReflection->getClassTypeDescription()),
+		))
+			->identifier(sprintf('phpstanApi.%s', strtolower($classReflection->getClassTypeDescription())))
+			->tip(sprintf(
+				"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+				'https://github.com/phpstan/phpstan/discussions',
+			))->build();
+
+		$docBlock = $classReflection->getResolvedPhpDoc();
+		if ($docBlock === null) {
+			return [$ruleError];
+		}
+
+		foreach ($docBlock->getPhpDocNodes() as $phpDocNode) {
+			$apiTags = $phpDocNode->getTagsByName('@api');
+			if (count($apiTags) > 0) {
+				return $this->processCoveredClass($node, $scope, $classReflection);
+			}
+		}
+
+		return [$ruleError];
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processCoveredClass(Node\Expr\Instanceof_ $node, Scope $scope, ClassReflection $classReflection): array
+	{
+		if ($classReflection->getName() === Type::class || $classReflection->isSubclassOf(Type::class)) {
+			return [];
+		}
+		if ($classReflection->isInterface()) {
+			return [];
+		}
+
+		$instanceofType = $scope->getType($node);
+		if ($instanceofType->isTrue()->or($instanceofType->isFalse())->yes()) {
+			return [];
+		}
+
+		$classType = new ObjectType($classReflection->getName(), null, $classReflection);
+
+		$exprType = $scope->getType($node->expr);
+		if ($exprType instanceof UnionType) {
+			foreach ($exprType->getTypes() as $innerType) {
+				if ($innerType->getObjectClassNames() !== [] && $classType->isSuperTypeOf($innerType)->yes()) {
+					return [];
+				}
+			}
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Although %s is covered by backward compatibility promise, this instanceof assumption might break because it\'s not guaranteed to always stay the same.',
+				$classReflection->getDisplayName(),
+			))->identifier('phpstanApi.instanceofAssumption')->tip(sprintf(
+				"In case of questions how to solve this correctly, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+				'https://github.com/phpstan/phpstan/discussions',
+			))->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Api/ApiInstanceofTypeRule.php b/src/Rules/Api/ApiInstanceofTypeRule.php
new file mode 100644
index 00000000..2115a2e3
--- /dev/null
+++ b/src/Rules/Api/ApiInstanceofTypeRule.php
@@ -0,0 +1,158 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Instanceof_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\TypeTraverserInstanceofVisitor;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\HasMethodType;
+use PHPStan\Type\Accessory\HasOffsetType;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IterableType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\TypeWithClassName;
+use PHPStan\Type\VoidType;
+use function array_key_exists;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Instanceof_>
+ */
+final class ApiInstanceofTypeRule implements Rule
+{
+
+	private const MAP = [
+		TypeWithClassName::class => 'Type::getObjectClassNames() or Type::getObjectClassReflections()',
+		EnumCaseObjectType::class => 'Type::getEnumCases()',
+		ConstantArrayType::class => 'Type::getConstantArrays()',
+		ArrayType::class => 'Type::isArray() or Type::getArrays()',
+		ConstantStringType::class => 'Type::getConstantStrings()',
+		StringType::class => 'Type::isString()',
+		ClassStringType::class => 'Type::isClassStringType()',
+		IntegerType::class => 'Type::isInteger()',
+		FloatType::class => 'Type::isFloat()',
+		NullType::class => 'Type::isNull()',
+		VoidType::class => 'Type::isVoid()',
+		BooleanType::class => 'Type::isBoolean()',
+		ConstantBooleanType::class => 'Type::isTrue() or Type::isFalse()',
+		CallableType::class => 'Type::isCallable() and Type::getCallableParametersAcceptors()',
+		IterableType::class => 'Type::isIterable()',
+		ObjectWithoutClassType::class => 'Type::isObject()',
+		ObjectType::class => 'Type::isObject() or Type::getObjectClassNames()',
+		GenericClassStringType::class => 'Type::isClassStringType() and Type::getClassStringObjectType()',
+		GenericObjectType::class => null,
+		IntersectionType::class => null,
+		ConstantScalarType::class => 'Type::isConstantScalarValue() or Type::getConstantScalarTypes() or Type::getConstantScalarValues()',
+		ObjectShapeType::class => 'Type::isObject() and Type::hasProperty()',
+
+		// accessory types
+		NonEmptyArrayType::class => 'Type::isIterableAtLeastOnce()',
+		OversizedArrayType::class => 'Type::isOversizedArray()',
+		AccessoryArrayListType::class => 'Type::isList()',
+		AccessoryNumericStringType::class => 'Type::isNumericString()',
+		AccessoryLiteralStringType::class => 'Type::isLiteralString()',
+		AccessoryLowercaseStringType::class => 'Type::isLowercaseString()',
+		AccessoryUppercaseStringType::class => 'Type::isUppercaseString()',
+		AccessoryNonEmptyStringType::class => 'Type::isNonEmptyString()',
+		AccessoryNonFalsyStringType::class => 'Type::isNonFalsyString()',
+		HasMethodType::class => 'Type::hasMethod()',
+		HasPropertyType::class => 'Type::hasProperty()',
+		HasOffsetType::class => 'Type::hasOffsetValueType()',
+		AccessoryType::class => 'methods on PHPStan\\Type\\Type',
+	];
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Instanceof_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		if ($node->getAttribute(TypeTraverserInstanceofVisitor::ATTRIBUTE_NAME, false) === true) {
+			return [];
+		}
+
+		$lowerMap = [];
+		foreach (self::MAP as $className => $method) {
+			$lowerMap[strtolower($className)] = $method;
+		}
+
+		$className = $scope->resolveName($node->class);
+		$lowerClassName = strtolower($className);
+		if (!array_key_exists($lowerClassName, $lowerMap)) {
+			return [];
+		}
+
+		if ($this->reflectionProvider->hasClass($className)) {
+			$classReflection = $this->reflectionProvider->getClass($className);
+			if ($classReflection->isSubclassOf(AccessoryType::class)) {
+				if ($className === $classReflection->getName()) {
+					return [];
+				}
+			}
+		}
+
+		$tip = 'Learn more: <fg=cyan>https://phpstan.org/blog/why-is-instanceof-type-wrong-and-getting-deprecated</>';
+		if ($lowerMap[$lowerClassName] === null) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Doing instanceof %s is error-prone and deprecated.',
+					$className,
+				))->identifier('phpstanApi.instanceofType')->tip($tip)->build(),
+			];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Doing instanceof %s is error-prone and deprecated. Use %s instead.',
+				$className,
+				$lowerMap[$lowerClassName],
+			))->identifier('phpstanApi.instanceofType')->tip($tip)->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Api/ApiInstantiationRule.php b/src/Rules/Api/ApiInstantiationRule.php
new file mode 100644
index 00000000..3ec072ec
--- /dev/null
+++ b/src/Rules/Api/ApiInstantiationRule.php
@@ -0,0 +1,77 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @implements Rule<Node\Expr\New_>
+ */
+final class ApiInstantiationRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\New_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($node->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $classReflection->getName(), $classReflection->getFileName())) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Creating new %s is not covered by backward compatibility promise. The class might change in a minor PHPStan version.',
+			$classReflection->getDisplayName(),
+		))->identifier('phpstanApi.constructor')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		if (!$classReflection->hasConstructor()) {
+			return [$ruleError];
+		}
+
+		$constructor = $classReflection->getConstructor();
+		$docComment = $constructor->getDocComment();
+		if ($docComment === null) {
+			return [$ruleError];
+		}
+
+		if (!str_contains($docComment, '@api')) {
+			return [$ruleError];
+		}
+
+		if ($constructor->getDeclaringClass()->getName() !== $classReflection->getName()) {
+			return [$ruleError];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Api/ApiInterfaceExtendsRule.php b/src/Rules/Api/ApiInterfaceExtendsRule.php
new file mode 100644
index 00000000..66334ffd
--- /dev/null
+++ b/src/Rules/Api/ApiInterfaceExtendsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Interface_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_merge;
+use function count;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Interface_>
+ */
+final class ApiInterfaceExtendsRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Interface_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($node->extends as $extends) {
+			$errors = array_merge($errors, $this->checkName($scope, $extends));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkName(Scope $scope, Node\Name $name): array
+	{
+		$extendedInterface = (string) $name;
+		if (!$this->reflectionProvider->hasClass($extendedInterface)) {
+			return [];
+		}
+
+		$extendedInterfaceReflection = $this->reflectionProvider->getClass($extendedInterface);
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $extendedInterfaceReflection->getName(), $extendedInterfaceReflection->getFileName())) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Extending %s is not covered by backward compatibility promise. The interface might change in a minor PHPStan version.',
+			$extendedInterfaceReflection->getDisplayName(),
+		))->identifier('phpstanApi.interface')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		if (in_array($extendedInterfaceReflection->getName(), BcUncoveredInterface::CLASSES, true)) {
+			return [$ruleError];
+		}
+
+		$docBlock = $extendedInterfaceReflection->getResolvedPhpDoc();
+		if ($docBlock === null) {
+			return [$ruleError];
+		}
+
+		foreach ($docBlock->getPhpDocNodes() as $phpDocNode) {
+			$apiTags = $phpDocNode->getTagsByName('@api');
+			if (count($apiTags) > 0) {
+				return [];
+			}
+		}
+
+		return [$ruleError];
+	}
+
+}
diff --git a/src/Rules/Api/ApiMethodCallRule.php b/src/Rules/Api/ApiMethodCallRule.php
new file mode 100644
index 00000000..65e97287
--- /dev/null
+++ b/src/Rules/Api/ApiMethodCallRule.php
@@ -0,0 +1,83 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @implements Rule<Node\Expr\MethodCall>
+ */
+final class ApiMethodCallRule implements Rule
+{
+
+	public function __construct(private ApiRuleHelper $apiRuleHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\MethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		$methodReflection = $scope->getMethodReflection($scope->getType($node->var), $node->name->toString());
+		if ($methodReflection === null) {
+			return [];
+		}
+
+		$declaringClass = $methodReflection->getDeclaringClass();
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $declaringClass->getName(), $declaringClass->getFileName())) {
+			return [];
+		}
+
+		if ($this->isCovered($methodReflection)) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Calling %s::%s() is not covered by backward compatibility promise. The method might change in a minor PHPStan version.',
+			$declaringClass->getDisplayName(),
+			$methodReflection->getName(),
+		))->identifier('phpstanApi.method')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		return [$ruleError];
+	}
+
+	private function isCovered(MethodReflection $methodReflection): bool
+	{
+		$declaringClass = $methodReflection->getDeclaringClass();
+		$classDocBlock = $declaringClass->getResolvedPhpDoc();
+		if ($classDocBlock !== null) {
+			foreach ($classDocBlock->getPhpDocNodes() as $phpDocNode) {
+				$apiTags = $phpDocNode->getTagsByName('@api');
+				if (count($apiTags) > 0) {
+					return true;
+				}
+			}
+		}
+
+		$methodDocComment = $methodReflection->getDocComment();
+		if ($methodDocComment === null) {
+			return false;
+		}
+
+		return str_contains($methodDocComment, '@api');
+	}
+
+}
diff --git a/src/Rules/Api/ApiRuleHelper.php b/src/Rules/Api/ApiRuleHelper.php
new file mode 100644
index 00000000..e00310f9
--- /dev/null
+++ b/src/Rules/Api/ApiRuleHelper.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PHPStan\Analyser\Scope;
+use PHPStan\File\ParentDirectoryRelativePathHelper;
+use function dirname;
+use function pathinfo;
+use function str_starts_with;
+use function stripos;
+use function strtolower;
+use const PATHINFO_BASENAME;
+
+final class ApiRuleHelper
+{
+
+	public function isPhpStanCode(Scope $scope, string $namespace, ?string $declaringFile): bool
+	{
+		$scopeNamespace = $scope->getNamespace();
+		if ($scopeNamespace === null) {
+			return $this->isPhpStanName($namespace);
+		}
+
+		if ($this->isPhpStanName($scopeNamespace)) {
+			if (!$this->isPhpStanName($namespace)) {
+				return false;
+			}
+
+			if ($declaringFile !== null) {
+				$scopeFile = $scope->getFile();
+				$dir = dirname($scopeFile);
+				$helper = new ParentDirectoryRelativePathHelper($dir);
+				$pathParts = $helper->getFilenameParts($declaringFile);
+				$directories = $this->createAbsoluteDirectories($dir, $pathParts);
+				foreach ($directories as $directory) {
+					if (pathinfo($directory, PATHINFO_BASENAME) === 'vendor') {
+						return true;
+					}
+				}
+			}
+
+			return false;
+		}
+
+		return $this->isPhpStanName($namespace);
+	}
+
+	/**
+	 * @param string[] $parts
+	 * @return string[]
+	 */
+	private function createAbsoluteDirectories(string $currentDirectory, array $parts): array
+	{
+		$directories = [];
+		foreach ($parts as $part) {
+			if ($part === '..') {
+				$currentDirectory = dirname($currentDirectory);
+				$directories[] = $currentDirectory;
+				continue;
+			}
+
+			$currentDirectory .= '/' . $part;
+			$directories[] = $currentDirectory;
+		}
+
+		return $directories;
+	}
+
+	public function isPhpStanName(string $namespace): bool
+	{
+		if (strtolower($namespace) === 'phpstan') {
+			return true;
+		}
+
+		if (str_starts_with($namespace, 'PHPStan\\PhpDocParser\\')) {
+			return false;
+		}
+
+		if (str_starts_with($namespace, 'PHPStan\\BetterReflection\\')) {
+			return false;
+		}
+
+		return stripos($namespace, 'PHPStan\\') === 0;
+	}
+
+}
diff --git a/src/Rules/Api/ApiStaticCallRule.php b/src/Rules/Api/ApiStaticCallRule.php
new file mode 100644
index 00000000..85459c34
--- /dev/null
+++ b/src/Rules/Api/ApiStaticCallRule.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @implements Rule<Node\Expr\StaticCall>
+ */
+final class ApiStaticCallRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\StaticCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($node->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		$methodName = $node->name->toString();
+		if (!$classReflection->hasNativeMethod($methodName)) {
+			return [];
+		}
+
+		$methodReflection = $classReflection->getNativeMethod($methodName);
+		$declaringClass = $methodReflection->getDeclaringClass();
+		if (!$this->apiRuleHelper->isPhpStanCode($scope, $declaringClass->getName(), $declaringClass->getFileName())) {
+			return [];
+		}
+
+		if ($this->isCovered($methodReflection)) {
+			return [];
+		}
+
+		$ruleError = RuleErrorBuilder::message(sprintf(
+			'Calling %s::%s() is not covered by backward compatibility promise. The method might change in a minor PHPStan version.',
+			$declaringClass->getDisplayName(),
+			$methodReflection->getName(),
+		))->identifier('phpstanApi.method')->tip(sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		))->build();
+
+		return [$ruleError];
+	}
+
+	private function isCovered(MethodReflection $methodReflection): bool
+	{
+		$declaringClass = $methodReflection->getDeclaringClass();
+		$classDocBlock = $declaringClass->getResolvedPhpDoc();
+		if ($methodReflection->getName() !== '__construct' && $classDocBlock !== null) {
+			foreach ($classDocBlock->getPhpDocNodes() as $phpDocNode) {
+				$apiTags = $phpDocNode->getTagsByName('@api');
+				if (count($apiTags) > 0) {
+					return true;
+				}
+			}
+		}
+
+		$methodDocComment = $methodReflection->getDocComment();
+		if ($methodDocComment === null) {
+			return false;
+		}
+
+		return str_contains($methodDocComment, '@api');
+	}
+
+}
diff --git a/src/Rules/Api/ApiTraitUseRule.php b/src/Rules/Api/ApiTraitUseRule.php
new file mode 100644
index 00000000..445d42e6
--- /dev/null
+++ b/src/Rules/Api/ApiTraitUseRule.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\TraitUse>
+ */
+final class ApiTraitUseRule implements Rule
+{
+
+	public function __construct(
+		private ApiRuleHelper $apiRuleHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\TraitUse::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		$tip = sprintf(
+			"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
+			'https://github.com/phpstan/phpstan/discussions',
+		);
+		foreach ($node->traits as $traitName) {
+			$traitName = $traitName->toString();
+			if (!$this->reflectionProvider->hasClass($traitName)) {
+				continue;
+			}
+
+			$traitReflection = $this->reflectionProvider->getClass($traitName);
+			if (!$this->apiRuleHelper->isPhpStanCode($scope, $traitReflection->getName(), $traitReflection->getFileName())) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Using %s is not covered by backward compatibility promise. The trait might change in a minor PHPStan version.',
+				$traitReflection->getDisplayName(),
+			))->identifier('phpstanApi.trait')->tip($tip)->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Api/BcUncoveredInterface.php b/src/Rules/Api/BcUncoveredInterface.php
new file mode 100644
index 00000000..05aed513
--- /dev/null
+++ b/src/Rules/Api/BcUncoveredInterface.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PHPStan\Analyser\Scope;
+use PHPStan\Command\Output;
+use PHPStan\Command\OutputStyle;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\Node\ReturnStatementsNode;
+use PHPStan\Node\VirtualNode;
+use PHPStan\PhpDoc\Tag\TypedTag;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassMemberReflection;
+use PHPStan\Reflection\ConstantReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\NamespaceAnswerer;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeWithClassName;
+
+final class BcUncoveredInterface
+{
+
+	public const CLASSES = [
+		Type::class,
+		CompoundType::class,
+		TemplateType::class,
+		TypedTag::class,
+		TypeWithClassName::class,
+		VirtualNode::class,
+		ReflectionProvider::class,
+		Scope::class,
+		FunctionReflection::class,
+		ExtendedMethodReflection::class,
+		ExtendedPropertyReflection::class,
+		ExtendedParametersAcceptor::class,
+		ExtendedParameterReflection::class,
+		CallableParametersAcceptor::class,
+		FileRuleError::class,
+		IdentifierRuleError::class,
+		LineRuleError::class,
+		MetadataRuleError::class,
+		NonIgnorableRuleError::class,
+		RuleError::class,
+		TipRuleError::class,
+		Output::class,
+		ClassMemberReflection::class,
+		ConstantReflection::class,
+		ClassConstantReflection::class,
+		ClassMemberAccessAnswerer::class,
+		NamespaceAnswerer::class,
+		Container::class,
+		OutputStyle::class,
+		ReturnStatementsNode::class,
+	];
+
+}
diff --git a/src/Rules/Api/GetTemplateTypeRule.php b/src/Rules/Api/GetTemplateTypeRule.php
new file mode 100644
index 00000000..2617d30f
--- /dev/null
+++ b/src/Rules/Api/GetTemplateTypeRule.php
@@ -0,0 +1,82 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Type;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodCall>
+ */
+final class GetTemplateTypeRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$args = $node->getArgs();
+		if (count($args) < 2) {
+			return [];
+		}
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		if ($node->name->toLowerString() !== 'gettemplatetype') {
+			return [];
+		}
+
+		$calledOnType = $scope->getType($node->var);
+		$methodReflection = $scope->getMethodReflection($calledOnType, $node->name->toString());
+		if ($methodReflection === null) {
+			return [];
+		}
+
+		if (!$methodReflection->getDeclaringClass()->is(Type::class)) {
+			return [];
+		}
+
+		$classType = $scope->getType($args[0]->value);
+		$templateType = $scope->getType($args[1]->value);
+		$errors = [];
+		foreach ($classType->getConstantStrings() as $classNameType) {
+			if (!$this->reflectionProvider->hasClass($classNameType->getValue())) {
+				continue;
+			}
+			$classReflection = $this->reflectionProvider->getClass($classNameType->getValue());
+			$templateTypeMap = $classReflection->getTemplateTypeMap();
+			foreach ($templateType->getConstantStrings() as $templateTypeName) {
+				if ($templateTypeMap->hasType($templateTypeName->getValue())) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Call to %s::%s() references unknown template type %s on class %s.',
+					$methodReflection->getDeclaringClass()->getDisplayName(),
+					$methodReflection->getName(),
+					$templateTypeName->getValue(),
+					$classReflection->getDisplayName(),
+				))->identifier('phpstanApi.getTemplateType')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Api/NodeConnectingVisitorAttributesRule.php b/src/Rules/Api/NodeConnectingVisitorAttributesRule.php
new file mode 100644
index 00000000..670e5fdd
--- /dev/null
+++ b/src/Rules/Api/NodeConnectingVisitorAttributesRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ObjectType;
+use function array_keys;
+use function in_array;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<MethodCall>
+ */
+final class NodeConnectingVisitorAttributesRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return MethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+		if ($node->name->toLowerString() !== 'getattribute') {
+			return [];
+		}
+		$calledOnType = $scope->getType($node->var);
+		if (!(new ObjectType(Node::class))->isSuperTypeOf($calledOnType)->yes()) {
+			return [];
+		}
+		$args = $node->getArgs();
+		if (!isset($args[0])) {
+			return [];
+		}
+		$argType = $scope->getType($args[0]->value);
+		if (!$argType instanceof ConstantStringType) {
+			return [];
+		}
+		if (!in_array($argType->getValue(), ['parent', 'previous', 'next'], true)) {
+			return [];
+		}
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		$hasPhpStanInterface = false;
+		foreach (array_keys($classReflection->getInterfaces()) as $interfaceName) {
+			if (!str_starts_with($interfaceName, 'PHPStan\\')) {
+				continue;
+			}
+
+			$hasPhpStanInterface = true;
+		}
+
+		if (!$hasPhpStanInterface) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Node attribute \'%s\' is no longer available.', $argType->getValue()))
+				->identifier('phpParser.nodeConnectingAttribute')
+				->tip('See: https://phpstan.org/blog/preprocessing-ast-for-custom-rules')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Api/OldPhpParser4ClassRule.php b/src/Rules/Api/OldPhpParser4ClassRule.php
new file mode 100644
index 00000000..3f7ad23d
--- /dev/null
+++ b/src/Rules/Api/OldPhpParser4ClassRule.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_change_key_case;
+use function array_key_exists;
+use function array_keys;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<Name>
+ */
+final class OldPhpParser4ClassRule implements Rule
+{
+
+	private const NAME_MAPPING = [
+		// from https://github.com/nikic/PHP-Parser/blob/master/UPGRADE-5.0.md#renamed-nodes
+		'PhpParser\Node\Scalar\LNumber' => Node\Scalar\Int_::class,
+		'PhpParser\Node\Scalar\DNumber' => Node\Scalar\Float_::class,
+		'PhpParser\Node\Scalar\Encapsed' => Node\Scalar\InterpolatedString::class,
+		'PhpParser\Node\Scalar\EncapsedStringPart' => Node\InterpolatedStringPart::class,
+		'PhpParser\Node\Expr\ArrayItem' => Node\ArrayItem::class,
+		'PhpParser\Node\Expr\ClosureUse' => Node\ClosureUse::class,
+		'PhpParser\Node\Stmt\DeclareDeclare' => Node\DeclareItem::class,
+		'PhpParser\Node\Stmt\PropertyProperty' => Node\PropertyItem::class,
+		'PhpParser\Node\Stmt\StaticVar' => Node\StaticVar::class,
+		'PhpParser\Node\Stmt\UseUse' => Node\UseItem::class,
+	];
+
+	public function getNodeType(): string
+	{
+		return Name::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$nameMapping = array_change_key_case(self::NAME_MAPPING);
+		$lowerName = $node->toLowerString();
+		if (!array_key_exists($lowerName, $nameMapping)) {
+			return [];
+		}
+
+		$newName = $nameMapping[$lowerName];
+
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		$hasPhpStanInterface = false;
+		foreach (array_keys($classReflection->getInterfaces()) as $interfaceName) {
+			if (!str_starts_with($interfaceName, 'PHPStan\\')) {
+				continue;
+			}
+
+			$hasPhpStanInterface = true;
+		}
+
+		if (!$hasPhpStanInterface) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Class %s not found. It has been renamed to %s in PHP-Parser v5.',
+				$node->toString(),
+				$newName,
+			))->identifier('phpParser.classRenamed')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Api/PhpStanNamespaceIn3rdPartyPackageRule.php b/src/Rules/Api/PhpStanNamespaceIn3rdPartyPackageRule.php
new file mode 100644
index 00000000..8c0ebac5
--- /dev/null
+++ b/src/Rules/Api/PhpStanNamespaceIn3rdPartyPackageRule.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\File\CouldNotReadFileException;
+use PHPStan\File\FileReader;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function dirname;
+use function is_dir;
+use function is_file;
+use function str_starts_with;
+
+/**
+ * @implements Rule<Node\Stmt\Namespace_>
+ */
+final class PhpStanNamespaceIn3rdPartyPackageRule implements Rule
+{
+
+	public function __construct(private ApiRuleHelper $apiRuleHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Namespace_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$namespace = null;
+		if ($node->name !== null) {
+			$namespace = $node->name->toString();
+		}
+		if ($namespace === null || !$this->apiRuleHelper->isPhpStanName($namespace)) {
+			return [];
+		}
+
+		$composerJson = $this->findComposerJsonContents(dirname($scope->getFile()));
+		if ($composerJson === null) {
+			return [];
+		}
+
+		$packageName = $composerJson['name'] ?? null;
+		if ($packageName !== null && str_starts_with($packageName, 'phpstan/')) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Declaring PHPStan namespace is not allowed in 3rd party packages.')
+				->identifier('phpstanApi.phpstanNamespace')
+				->tip("See:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise")
+				->build(),
+		];
+	}
+
+	/**
+	 * @return mixed[]|null
+	 */
+	private function findComposerJsonContents(string $fromDirectory): ?array
+	{
+		if (!is_dir($fromDirectory)) {
+			return null;
+		}
+
+		$composerJsonPath = $fromDirectory . '/composer.json';
+		if (!is_file($composerJsonPath)) {
+			$dirName = dirname($fromDirectory);
+			if ($dirName !== $fromDirectory) {
+				return $this->findComposerJsonContents($dirName);
+			}
+
+			return null;
+		}
+
+		try {
+			return Json::decode(FileReader::read($composerJsonPath), Json::FORCE_ARRAY);
+		} catch (JsonException) {
+			return null;
+		} catch (CouldNotReadFileException) {
+			return null;
+		}
+	}
+
+}
diff --git a/src/Rules/Api/RuntimeReflectionFunctionRule.php b/src/Rules/Api/RuntimeReflectionFunctionRule.php
new file mode 100644
index 00000000..13fbe680
--- /dev/null
+++ b/src/Rules/Api/RuntimeReflectionFunctionRule.php
@@ -0,0 +1,77 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_keys;
+use function in_array;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class RuntimeReflectionFunctionRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		if (!in_array($functionReflection->getName(), [
+			'is_a',
+			'is_subclass_of',
+			'class_parents',
+			'class_implements',
+			'class_uses',
+		], true)) {
+			return [];
+		}
+
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		$hasPhpStanInterface = false;
+		foreach (array_keys($classReflection->getInterfaces()) as $interfaceName) {
+			if (!str_starts_with($interfaceName, 'PHPStan\\')) {
+				continue;
+			}
+
+			$hasPhpStanInterface = true;
+		}
+
+		if (!$hasPhpStanInterface) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf('Function %s() is a runtime reflection concept that might not work in PHPStan because it uses fully static reflection engine. Use objects retrieved from ReflectionProvider instead.', $functionReflection->getName()),
+			)->identifier('phpstanApi.runtimeReflection')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Api/RuntimeReflectionInstantiationRule.php b/src/Rules/Api/RuntimeReflectionInstantiationRule.php
new file mode 100644
index 00000000..28cf9e22
--- /dev/null
+++ b/src/Rules/Api/RuntimeReflectionInstantiationRule.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Rules\Api;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use ReflectionClass;
+use ReflectionClassConstant;
+use ReflectionExtension;
+use ReflectionFunction;
+use ReflectionGenerator;
+use ReflectionMethod;
+use ReflectionObject;
+use ReflectionParameter;
+use ReflectionProperty;
+use ReflectionZendExtension;
+use function array_keys;
+use function in_array;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<Node\Expr\New_>
+ */
+final class RuntimeReflectionInstantiationRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\New_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($node->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!in_array($classReflection->getName(), [
+			ReflectionMethod::class,
+			ReflectionClass::class,
+			ReflectionClassConstant::class,
+			'ReflectionEnum',
+			'ReflectionEnumBackedCase',
+			ReflectionZendExtension::class,
+			ReflectionExtension::class,
+			ReflectionFunction::class,
+			ReflectionObject::class,
+			ReflectionParameter::class,
+			ReflectionProperty::class,
+			ReflectionGenerator::class,
+			'ReflectionFiber',
+		], true)) {
+			return [];
+		}
+
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		$scopeClassReflection = $scope->getClassReflection();
+		$hasPhpStanInterface = false;
+		foreach (array_keys($scopeClassReflection->getInterfaces()) as $interfaceName) {
+			if (!str_starts_with($interfaceName, 'PHPStan\\')) {
+				continue;
+			}
+
+			$hasPhpStanInterface = true;
+		}
+
+		if (!$hasPhpStanInterface) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf('Creating new %s is a runtime reflection concept that might not work in PHPStan because it uses fully static reflection engine. Use objects retrieved from ReflectionProvider instead.', $classReflection->getName()),
+			)->identifier('phpstanApi.runtimeReflection')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/AllowedArrayKeysTypes.php b/src/Rules/Arrays/AllowedArrayKeysTypes.php
new file mode 100644
index 00000000..708a8ff9
--- /dev/null
+++ b/src/Rules/Arrays/AllowedArrayKeysTypes.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+
+final class AllowedArrayKeysTypes
+{
+
+	public static function getType(): Type
+	{
+		return new UnionType([
+			new IntegerType(),
+			new StringType(),
+			new FloatType(),
+			new BooleanType(),
+			new NullType(),
+		]);
+	}
+
+	public static function narrowOffsetKeyType(Type $varType, Type $keyType): ?Type
+	{
+		if (!$varType->isArray()->yes() || $varType->isIterableAtLeastOnce()->no()) {
+			return null;
+		}
+
+		$varIterableKeyType = $varType->getIterableKeyType();
+
+		if ($varIterableKeyType->isConstantScalarValue()->yes()) {
+			$narrowedKey = TypeCombinator::union(
+				$varIterableKeyType,
+				TypeCombinator::remove($varIterableKeyType->toString(), new ConstantStringType('')),
+			);
+
+			if (!$varType->hasOffsetValueType(new ConstantIntegerType(0))->no()) {
+				$narrowedKey = TypeCombinator::union(
+					$narrowedKey,
+					new ConstantBooleanType(false),
+				);
+			}
+
+			if (!$varType->hasOffsetValueType(new ConstantIntegerType(1))->no()) {
+				$narrowedKey = TypeCombinator::union(
+					$narrowedKey,
+					new ConstantBooleanType(true),
+				);
+			}
+
+			if (!$varType->hasOffsetValueType(new ConstantStringType(''))->no()) {
+				$narrowedKey = TypeCombinator::addNull($narrowedKey);
+			}
+
+			if (!$varIterableKeyType->isNumericString()->no() || !$varIterableKeyType->isInteger()->no()) {
+				$narrowedKey = TypeCombinator::union($narrowedKey, new FloatType());
+			}
+
+			return $narrowedKey;
+		} elseif ($varIterableKeyType->isInteger()->yes() && $keyType->isString()->yes()) {
+			return TypeCombinator::intersect($varIterableKeyType->toString(), $keyType);
+		}
+
+		return new MixedType(
+			false,
+			new UnionType([
+				new ArrayType(new MixedType(), new MixedType()),
+				new ObjectWithoutClassType(),
+				new ResourceType(),
+			]),
+		);
+	}
+
+}
diff --git a/src/Rules/Arrays/ArrayDestructuringRule.php b/src/Rules/Arrays/ArrayDestructuringRule.php
new file mode 100644
index 00000000..e3d2446a
--- /dev/null
+++ b/src/Rules/Arrays/ArrayDestructuringRule.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use ArrayAccess;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Assign;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Assign>
+ */
+final class ArrayDestructuringRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private NonexistentOffsetInArrayDimFetchCheck $nonexistentOffsetInArrayDimFetchCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Assign::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->var instanceof Node\Expr\List_) {
+			return [];
+		}
+
+		return $this->getErrors(
+			$scope,
+			$node->var,
+			$node->expr,
+		);
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function getErrors(Scope $scope, Node\Expr\List_ $var, Expr $expr): array
+	{
+		$exprTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$expr,
+			'',
+			static fn (Type $varType): bool => $varType->isArray()->yes() || (new ObjectType(ArrayAccess::class))->isSuperTypeOf($varType)->yes(),
+		);
+		$exprType = $exprTypeResult->getType();
+		if ($exprType instanceof ErrorType) {
+			return [];
+		}
+		if (!$exprType->isArray()->yes() && !(new ObjectType(ArrayAccess::class))->isSuperTypeOf($exprType)->yes()) {
+			return [
+				RuleErrorBuilder::message(sprintf('Cannot use array destructuring on %s.', $exprType->describe(VerbosityLevel::typeOnly())))
+					->identifier('offsetAccess.nonArray')
+					->build(),
+			];
+		}
+
+		$errors = [];
+		$i = 0;
+		foreach ($var->items as $item) {
+			if ($item === null) {
+				$i++;
+				continue;
+			}
+
+			$keyExpr = null;
+			if ($item->key === null) {
+				$keyType = new ConstantIntegerType($i);
+				$keyExpr = new Node\Scalar\Int_($i);
+			} else {
+				$keyType = $scope->getType($item->key);
+				$keyExpr = new TypeExpr($keyType);
+			}
+
+			$itemErrors = $this->nonexistentOffsetInArrayDimFetchCheck->check(
+				$scope,
+				$expr,
+				'',
+				$keyType,
+			);
+			$errors = array_merge($errors, $itemErrors);
+
+			if (!$item->value instanceof Node\Expr\List_) {
+				$i++;
+				continue;
+			}
+
+			$errors = array_merge($errors, $this->getErrors(
+				$scope,
+				$item->value,
+				new Expr\ArrayDimFetch($expr, $keyExpr),
+			));
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Arrays/ArrayUnpackingRule.php b/src/Rules/Arrays/ArrayUnpackingRule.php
new file mode 100644
index 00000000..c701afe2
--- /dev/null
+++ b/src/Rules/Arrays/ArrayUnpackingRule.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\ArrayItem;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<ArrayItem>
+ */
+final class ArrayUnpackingRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion, private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ArrayItem::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->unpack === false || $this->phpVersion->supportsArrayUnpackingWithStringKeys()) {
+			return [];
+		}
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			new GetIterableKeyTypeExpr($node->value),
+			'',
+			static fn (Type $type): bool => $type->isString()->no(),
+		);
+
+		$keyType = $typeResult->getType();
+		if ($keyType instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$isString = $keyType->isString();
+		if ($isString->no()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Array unpacking cannot be used on an array with %sstring keys: %s',
+				$isString->yes() ? '' : 'potential ',
+				$scope->getType($node->value)->describe(VerbosityLevel::value()),
+			))->identifier('arrayUnpacking.stringOffset')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/DeadForeachRule.php b/src/Rules/Arrays/DeadForeachRule.php
new file mode 100644
index 00000000..317927ec
--- /dev/null
+++ b/src/Rules/Arrays/DeadForeachRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\Foreach_>
+ */
+final class DeadForeachRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Foreach_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$iterableType = $scope->getType($node->expr);
+		if ($iterableType->isIterable()->no()) {
+			return [];
+		}
+
+		if (!$iterableType->isIterableAtLeastOnce()->no()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Empty array passed to foreach.')
+				->identifier('foreach.emptyArray')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/DuplicateKeysInLiteralArraysRule.php b/src/Rules/Arrays/DuplicateKeysInLiteralArraysRule.php
new file mode 100644
index 00000000..2caa66d9
--- /dev/null
+++ b/src/Rules/Arrays/DuplicateKeysInLiteralArraysRule.php
@@ -0,0 +1,122 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\LiteralArrayNode;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ConstantScalarType;
+use function array_keys;
+use function count;
+use function implode;
+use function max;
+use function sprintf;
+use function var_export;
+
+/**
+ * @implements Rule<LiteralArrayNode>
+ */
+final class DuplicateKeysInLiteralArraysRule implements Rule
+{
+
+	public function __construct(
+		private ExprPrinter $exprPrinter,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return LiteralArrayNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$values = [];
+		$duplicateKeys = [];
+		$printedValues = [];
+		$valueLines = [];
+
+		/**
+		 * @var int|false|null $autoGeneratedIndex
+		 * - An int value represent the biggest integer used as array key.
+		 *   When no key is provided this value + 1 will be used.
+		 * - Null is used as initializer instead of 0 to avoid issue with negative keys.
+		 * - False means a non-scalar value was encountered and we cannot be sure of the next keys.
+		 */
+		$autoGeneratedIndex = null;
+		foreach ($node->getItemNodes() as $itemNode) {
+			$item = $itemNode->getArrayItem();
+			if ($item === null) {
+				$autoGeneratedIndex = false;
+				continue;
+			}
+
+			$key = $item->key;
+			if ($key === null) {
+				if ($autoGeneratedIndex === false) {
+					continue;
+				}
+
+				if ($autoGeneratedIndex === null) {
+					$autoGeneratedIndex = 0;
+					$keyType = new ConstantIntegerType(0);
+				} else {
+					$keyType = new ConstantIntegerType(++$autoGeneratedIndex);
+				}
+			} else {
+				$keyType = $itemNode->getScope()->getType($key);
+
+				$arrayKeyValue = $keyType->toArrayKey();
+				if ($arrayKeyValue instanceof ConstantIntegerType) {
+					$autoGeneratedIndex = $autoGeneratedIndex === null
+						? $arrayKeyValue->getValue()
+						: max($autoGeneratedIndex, $arrayKeyValue->getValue());
+				}
+			}
+
+			if (!$keyType instanceof ConstantScalarType) {
+				$autoGeneratedIndex = false;
+				continue;
+			}
+
+			$value = $keyType->getValue();
+			$printedValue = $key !== null
+				? $this->exprPrinter->printExpr($key)
+				: $value;
+
+			$printedValues[$value][] = $printedValue;
+
+			if (!isset($valueLines[$value])) {
+				$valueLines[$value] = $item->getStartLine();
+			}
+
+			$previousCount = count($values);
+			$values[$value] = $printedValue;
+			if ($previousCount !== count($values)) {
+				continue;
+			}
+
+			$duplicateKeys[$value] = true;
+		}
+
+		$messages = [];
+		foreach (array_keys($duplicateKeys) as $value) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Array has %d %s with value %s (%s).',
+				count($printedValues[$value]),
+				count($printedValues[$value]) === 1 ? 'duplicate key' : 'duplicate keys',
+				var_export($value, true),
+				implode(', ', $printedValues[$value]),
+			))->identifier('array.duplicateKey')->line($valueLines[$value])->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Arrays/InvalidKeyInArrayDimFetchRule.php b/src/Rules/Arrays/InvalidKeyInArrayDimFetchRule.php
new file mode 100644
index 00000000..62addab0
--- /dev/null
+++ b/src/Rules/Arrays/InvalidKeyInArrayDimFetchRule.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\ArrayDimFetch>
+ */
+final class InvalidKeyInArrayDimFetchRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrayDimFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->dim === null) {
+			return [];
+		}
+
+		$dimensionType = $scope->getType($node->dim);
+		if ($dimensionType instanceof MixedType) {
+			return [];
+		}
+
+		$varType = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->var,
+			'',
+			static fn (Type $varType): bool => $varType->isArray()->no() || AllowedArrayKeysTypes::getType()->isSuperTypeOf($dimensionType)->yes(),
+		)->getType();
+
+		if ($varType instanceof ErrorType || $varType->isArray()->no()) {
+			return [];
+		}
+
+		$isSuperType = AllowedArrayKeysTypes::getType()->isSuperTypeOf($dimensionType);
+		if ($isSuperType->yes() || ($isSuperType->maybe() && !$this->reportMaybes)) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf('%s array key type %s.', $isSuperType->no() ? 'Invalid' : 'Possibly invalid', $dimensionType->describe(VerbosityLevel::typeOnly())),
+			)->identifier('offsetAccess.invalidOffset')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/InvalidKeyInArrayItemRule.php b/src/Rules/Arrays/InvalidKeyInArrayItemRule.php
new file mode 100644
index 00000000..ba48b613
--- /dev/null
+++ b/src/Rules/Arrays/InvalidKeyInArrayItemRule.php
@@ -0,0 +1,54 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\ArrayItem>
+ */
+final class InvalidKeyInArrayItemRule implements Rule
+{
+
+	public function __construct(private bool $reportMaybes)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\ArrayItem::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->key === null) {
+			return [];
+		}
+
+		$dimensionType = $scope->getType($node->key);
+		$isSuperType = AllowedArrayKeysTypes::getType()->isSuperTypeOf($dimensionType);
+		if ($isSuperType->no()) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Invalid array key type %s.', $dimensionType->describe(VerbosityLevel::typeOnly())),
+				)->identifier('array.invalidKey')->build(),
+			];
+		} elseif ($this->reportMaybes && $isSuperType->maybe() && !$dimensionType instanceof MixedType) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Possibly invalid array key type %s.', $dimensionType->describe(VerbosityLevel::typeOnly())),
+				)->identifier('array.invalidKey')->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Arrays/IterableInForeachRule.php b/src/Rules/Arrays/IterableInForeachRule.php
new file mode 100644
index 00000000..32f6c106
--- /dev/null
+++ b/src/Rules/Arrays/IterableInForeachRule.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InForeachNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InForeachNode>
+ */
+final class IterableInForeachRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InForeachNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$originalNode->expr,
+			'Iterating over an object of an unknown class %s.',
+			static fn (Type $type): bool => $type->isIterable()->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+		if ($type->isIterable()->yes()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Argument of an invalid type %s supplied for foreach, only iterables are supported.',
+				$type->describe(VerbosityLevel::typeOnly()),
+			))->identifier('foreach.nonIterable')->line($originalNode->expr->getStartLine())->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchCheck.php b/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchCheck.php
new file mode 100644
index 00000000..820b1c90
--- /dev/null
+++ b/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchCheck.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+final class NonexistentOffsetInArrayDimFetchCheck
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $reportMaybes,
+		private bool $reportPossiblyNonexistentGeneralArrayOffset,
+		private bool $reportPossiblyNonexistentConstantArrayOffset,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Scope $scope,
+		Expr $var,
+		string $unknownClassPattern,
+		Type $dimType,
+	): array
+	{
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $var),
+			$unknownClassPattern,
+			static fn (Type $type): bool => $type->hasOffsetValueType($dimType)->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		if ($scope->isInExpressionAssign($var) || $scope->isUndefinedExpressionAllowed($var)) {
+			return [];
+		}
+
+		if ($type->hasOffsetValueType($dimType)->no()) {
+			return [
+				RuleErrorBuilder::message(sprintf('Offset %s does not exist on %s.', $dimType->describe(count($dimType->getConstantStrings()) > 0 ? VerbosityLevel::precise() : VerbosityLevel::value()), $type->describe(VerbosityLevel::value())))
+					->identifier('offsetAccess.notFound')
+					->build(),
+			];
+		}
+
+		if ($this->reportMaybes) {
+			$report = false;
+
+			if ($type instanceof BenevolentUnionType) {
+				$flattenedTypes = [$type];
+			} else {
+				$flattenedTypes = TypeUtils::flattenTypes($type);
+			}
+			foreach ($flattenedTypes as $innerType) {
+				if (
+					$this->reportPossiblyNonexistentGeneralArrayOffset
+					&& $innerType->isArray()->yes()
+					&& !$innerType->isConstantArray()->yes()
+					&& !$innerType->hasOffsetValueType($dimType)->yes()
+				) {
+					$report = true;
+					break;
+				}
+				if (
+					$this->reportPossiblyNonexistentConstantArrayOffset
+					&& $innerType->isConstantArray()->yes()
+					&& !$innerType->hasOffsetValueType($dimType)->yes()
+				) {
+					$report = true;
+					break;
+				}
+				if ($dimType instanceof UnionType) {
+					if ($innerType->hasOffsetValueType($dimType)->no()) {
+						$report = true;
+						break;
+					}
+					continue;
+				}
+				foreach (TypeUtils::flattenTypes($dimType) as $innerDimType) {
+					if ($innerType->hasOffsetValueType($innerDimType)->no()) {
+						$report = true;
+						break 2;
+					}
+				}
+			}
+
+			if ($report) {
+				return [
+					RuleErrorBuilder::message(sprintf('Offset %s might not exist on %s.', $dimType->describe(count($dimType->getConstantStrings()) > 0 ? VerbosityLevel::precise() : VerbosityLevel::value()), $type->describe(VerbosityLevel::value())))
+						->identifier('offsetAccess.notFound')
+						->build(),
+				];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchRule.php b/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchRule.php
new file mode 100644
index 00000000..58efc5e7
--- /dev/null
+++ b/src/Rules/Arrays/NonexistentOffsetInArrayDimFetchRule.php
@@ -0,0 +1,108 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\ArrayDimFetch>
+ */
+final class NonexistentOffsetInArrayDimFetchRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private NonexistentOffsetInArrayDimFetchCheck $nonexistentOffsetInArrayDimFetchCheck,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrayDimFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->dim !== null) {
+			$dimType = $scope->getType($node->dim);
+			$unknownClassPattern = sprintf('Access to offset %s on an unknown class %%s.', SprintfHelper::escapeFormatString($dimType->describe(VerbosityLevel::value())));
+		} else {
+			$dimType = null;
+			$unknownClassPattern = 'Access to an offset on an unknown class %s.';
+		}
+
+		$isOffsetAccessibleTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $node->var),
+			$unknownClassPattern,
+			static fn (Type $type): bool => $type->isOffsetAccessible()->yes(),
+		);
+		$isOffsetAccessibleType = $isOffsetAccessibleTypeResult->getType();
+		if ($isOffsetAccessibleType instanceof ErrorType) {
+			return $isOffsetAccessibleTypeResult->getUnknownClassErrors();
+		}
+
+		if ($scope->hasExpressionType($node)->yes()) {
+			return [];
+		}
+
+		$isOffsetAccessible = $isOffsetAccessibleType->isOffsetAccessible();
+
+		if ($scope->isInExpressionAssign($node) && $isOffsetAccessible->yes()) {
+			return [];
+		}
+
+		if ($scope->isUndefinedExpressionAllowed($node) && $isOffsetAccessibleType->isOffsetAccessLegal()->yes()) {
+			return [];
+		}
+
+		if (!$isOffsetAccessible->yes()) {
+			if ($isOffsetAccessible->no() || $this->reportMaybes) {
+				if ($dimType !== null) {
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'Cannot access offset %s on %s.',
+							$dimType->describe(count($dimType->getConstantStrings()) > 0 ? VerbosityLevel::precise() : VerbosityLevel::value()),
+							$isOffsetAccessibleType->describe(VerbosityLevel::value()),
+						))->identifier('offsetAccess.nonOffsetAccessible')->build(),
+					];
+				}
+
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Cannot access an offset on %s.',
+						$isOffsetAccessibleType->describe(VerbosityLevel::typeOnly()),
+					))->identifier('offsetAccess.nonOffsetAccessible')->build(),
+				];
+			}
+
+			return [];
+		}
+
+		if ($dimType === null) {
+			return [];
+		}
+
+		return $this->nonexistentOffsetInArrayDimFetchCheck->check(
+			$scope,
+			$node->var,
+			$unknownClassPattern,
+			$dimType,
+		);
+	}
+
+}
diff --git a/src/Rules/Arrays/OffsetAccessAssignOpRule.php b/src/Rules/Arrays/OffsetAccessAssignOpRule.php
new file mode 100644
index 00000000..592e71ae
--- /dev/null
+++ b/src/Rules/Arrays/OffsetAccessAssignOpRule.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\AssignOp>
+ */
+final class OffsetAccessAssignOpRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\AssignOp::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->var instanceof ArrayDimFetch) {
+			return [];
+		}
+
+		$arrayDimFetch = $node->var;
+
+		$potentialDimType = null;
+		if ($arrayDimFetch->dim !== null) {
+			$potentialDimType = $scope->getType($arrayDimFetch->dim);
+		}
+
+		$varTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$arrayDimFetch->var,
+			'',
+			static function (Type $varType) use ($potentialDimType): bool {
+				$arrayDimType = $varType->setOffsetValueType($potentialDimType, new MixedType());
+				return !($arrayDimType instanceof ErrorType);
+			},
+		);
+		$varType = $varTypeResult->getType();
+
+		if ($arrayDimFetch->dim !== null) {
+			$dimTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				$arrayDimFetch->dim,
+				'',
+				static function (Type $dimType) use ($varType): bool {
+					$arrayDimType = $varType->setOffsetValueType($dimType, new MixedType());
+					return !($arrayDimType instanceof ErrorType);
+				},
+			);
+			$dimType = $dimTypeResult->getType();
+			if ($varType->hasOffsetValueType($dimType)->no()) {
+				return [];
+			}
+		} else {
+			$dimType = $potentialDimType;
+		}
+
+		$resultType = $varType->setOffsetValueType($dimType, new MixedType());
+		if (!($resultType instanceof ErrorType)) {
+			return [];
+		}
+
+		if ($dimType === null) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot assign new offset to %s.',
+					$varType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('offsetAssign.dimType')->build(),
+			];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Cannot assign offset %s to %s.',
+				$dimType->describe(VerbosityLevel::value()),
+				$varType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('offsetAssign.dimType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/OffsetAccessAssignmentRule.php b/src/Rules/Arrays/OffsetAccessAssignmentRule.php
new file mode 100644
index 00000000..e25016ac
--- /dev/null
+++ b/src/Rules/Arrays/OffsetAccessAssignmentRule.php
@@ -0,0 +1,99 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\ArrayDimFetch>
+ */
+final class OffsetAccessAssignmentRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrayDimFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInExpressionAssign($node)) {
+			return [];
+		}
+
+		$potentialDimType = null;
+		if ($node->dim !== null) {
+			$potentialDimType = $scope->getType($node->dim);
+		}
+
+		$varTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $node->var),
+			'',
+			static function (Type $varType) use ($potentialDimType): bool {
+				$arrayDimType = $varType->setOffsetValueType($potentialDimType, new MixedType());
+				return !($arrayDimType instanceof ErrorType);
+			},
+		);
+		$varType = $varTypeResult->getType();
+		if ($varType instanceof ErrorType) {
+			return [];
+		}
+		if (!$varType->isOffsetAccessible()->yes()) {
+			return [];
+		}
+
+		if ($node->dim !== null) {
+			$dimTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				$node->dim,
+				'',
+				static function (Type $dimType) use ($varType): bool {
+					$arrayDimType = $varType->setOffsetValueType($dimType, new MixedType());
+					return !($arrayDimType instanceof ErrorType);
+				},
+			);
+			$dimType = $dimTypeResult->getType();
+		} else {
+			$dimType = $potentialDimType;
+		}
+
+		$resultType = $varType->setOffsetValueType($dimType, new MixedType());
+		if (!($resultType instanceof ErrorType)) {
+			return [];
+		}
+
+		if ($dimType === null) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot assign new offset to %s.',
+					$varType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('offsetAssign.dimType')->build(),
+			];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Cannot assign offset %s to %s.',
+				$dimType->describe(VerbosityLevel::value()),
+				$varType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('offsetAssign.dimType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/OffsetAccessValueAssignmentRule.php b/src/Rules/Arrays/OffsetAccessValueAssignmentRule.php
new file mode 100644
index 00000000..9a919a9d
--- /dev/null
+++ b/src/Rules/Arrays/OffsetAccessValueAssignmentRule.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Assign;
+use PhpParser\Node\Expr\AssignOp;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Expr>
+ */
+final class OffsetAccessValueAssignmentRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Assign
+			&& !$node instanceof AssignOp
+			&& !$node instanceof Expr\AssignRef
+		) {
+			return [];
+		}
+
+		if (!$node->var instanceof Expr\ArrayDimFetch) {
+			return [];
+		}
+
+		$arrayDimFetch = $node->var;
+		$varType = $scope->getType($arrayDimFetch->var);
+		if ($varType->isObject()->no()) {
+			return [];
+		}
+
+		if ($node instanceof Assign || $node instanceof Expr\AssignRef) {
+			$assignedValueType = $scope->getType($node->expr);
+		} else {
+			$assignedValueType = $scope->getType($node);
+		}
+
+		$arrayTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$arrayDimFetch->var,
+			'',
+			static function (Type $varType) use ($assignedValueType): bool {
+				$result = $varType->setOffsetValueType(new MixedType(), $assignedValueType);
+				return !($result instanceof ErrorType);
+			},
+		);
+		$arrayType = $arrayTypeResult->getType();
+		if ($arrayType instanceof ErrorType) {
+			return [];
+		}
+		$isOffsetAccessible = $arrayType->isOffsetAccessible();
+		if (!$isOffsetAccessible->yes()) {
+			return [];
+		}
+		$resultType = $arrayType->setOffsetValueType(new MixedType(), $assignedValueType);
+		if (!$resultType instanceof ErrorType) {
+			return [];
+		}
+
+		$originalArrayType = $scope->getType($arrayDimFetch->var);
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'%s does not accept %s.',
+				$originalArrayType->describe(VerbosityLevel::value()),
+				$assignedValueType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('offsetAssign.valueType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/OffsetAccessWithoutDimForReadingRule.php b/src/Rules/Arrays/OffsetAccessWithoutDimForReadingRule.php
new file mode 100644
index 00000000..43400048
--- /dev/null
+++ b/src/Rules/Arrays/OffsetAccessWithoutDimForReadingRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Expr\ArrayDimFetch>
+ */
+final class OffsetAccessWithoutDimForReadingRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrayDimFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->isInExpressionAssign($node)) {
+			return [];
+		}
+
+		if ($node->dim !== null) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Cannot use [] for reading.')
+				->identifier('offsetAccess.noDim')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Arrays/UnpackIterableInArrayRule.php b/src/Rules/Arrays/UnpackIterableInArrayRule.php
new file mode 100644
index 00000000..e2e77516
--- /dev/null
+++ b/src/Rules/Arrays/UnpackIterableInArrayRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Arrays;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\LiteralArrayNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<LiteralArrayNode>
+ */
+final class UnpackIterableInArrayRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return LiteralArrayNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($node->getItemNodes() as $itemNode) {
+			$item = $itemNode->getArrayItem();
+			if ($item === null) {
+				continue;
+			}
+			if (!$item->unpack) {
+				continue;
+			}
+
+			$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				$item->value,
+				'',
+				static fn (Type $type): bool => $type->isIterable()->yes(),
+			);
+			$type = $typeResult->getType();
+			if ($type instanceof ErrorType) {
+				continue;
+			}
+
+			if ($type->isIterable()->yes()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Only iterables can be unpacked, %s given.',
+				$type->describe(VerbosityLevel::typeOnly()),
+			))->identifier('arrayUnpacking.nonIterable')->line($item->getStartLine())->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/AttributesCheck.php b/src/Rules/AttributesCheck.php
new file mode 100644
index 00000000..1edda061
--- /dev/null
+++ b/src/Rules/AttributesCheck.php
@@ -0,0 +1,168 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use Attribute;
+use PhpParser\Node\AttributeGroup;
+use PhpParser\Node\Expr\New_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use function array_key_exists;
+use function count;
+use function sprintf;
+use function strtolower;
+
+final class AttributesCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private FunctionCallParametersCheck $functionCallParametersCheck,
+		private ClassNameCheck $classCheck,
+		private bool $deprecationRulesInstalled,
+	)
+	{
+	}
+
+	/**
+	 * @param AttributeGroup[] $attrGroups
+	 * @param int-mask-of<Attribute::TARGET_*> $requiredTarget
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Scope $scope,
+		array $attrGroups,
+		int $requiredTarget,
+		string $targetName,
+	): array
+	{
+		$errors = [];
+		$alreadyPresent = [];
+		foreach ($attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attribute) {
+				$name = $attribute->name->toString();
+				if (!$this->reflectionProvider->hasClass($name)) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Attribute class %s does not exist.', $name))
+						->line($attribute->getStartLine())
+						->identifier('attribute.notFound')
+						->build();
+					continue;
+				}
+
+				$attributeClass = $this->reflectionProvider->getClass($name);
+				if (!$attributeClass->isAttributeClass()) {
+					$errors[] = RuleErrorBuilder::message(sprintf('%s %s is not an Attribute class.', $attributeClass->getClassTypeDescription(), $attributeClass->getDisplayName()))
+						->identifier('attribute.notAttribute')
+						->line($attribute->getStartLine())
+						->build();
+					continue;
+				}
+
+				if ($attributeClass->isAbstract()) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Attribute class %s is abstract.', $name))
+						->identifier('attribute.abstract')
+						->line($attribute->getStartLine())
+						->build();
+				}
+
+				foreach ($this->classCheck->checkClassNames([new ClassNameNodePair($name, $attribute)]) as $caseSensitivityError) {
+					$errors[] = $caseSensitivityError;
+				}
+
+				$flags = $attributeClass->getAttributeClassFlags();
+				if (($flags & $requiredTarget) === 0) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Attribute class %s does not have the %s target.', $name, $targetName))
+						->identifier('attribute.target')
+						->line($attribute->getStartLine())
+						->build();
+				}
+
+				if (($flags & Attribute::IS_REPEATABLE) === 0) {
+					$loweredName = strtolower($name);
+					if (array_key_exists($loweredName, $alreadyPresent)) {
+						$errors[] = RuleErrorBuilder::message(sprintf('Attribute class %s is not repeatable but is already present above the %s.', $name, $targetName))
+							->identifier('attribute.nonRepeatable')
+							->line($attribute->getStartLine())
+							->build();
+					}
+
+					$alreadyPresent[$loweredName] = true;
+				}
+
+				if ($this->deprecationRulesInstalled && $attributeClass->isDeprecated()) {
+					if ($attributeClass->getDeprecatedDescription() !== null) {
+						$deprecatedError = sprintf('Attribute class %s is deprecated: %s', $name, $attributeClass->getDeprecatedDescription());
+					} else {
+						$deprecatedError = sprintf('Attribute class %s is deprecated.', $name);
+					}
+					$errors[] = RuleErrorBuilder::message($deprecatedError)
+						->identifier('attribute.deprecated')
+						->line($attribute->getStartLine())
+						->build();
+				}
+
+				if (!$attributeClass->hasConstructor()) {
+					if (count($attribute->args) > 0) {
+						$errors[] = RuleErrorBuilder::message(sprintf('Attribute class %s does not have a constructor and must be instantiated without any parameters.', $name))
+							->identifier('attribute.noConstructor')
+							->line($attribute->getStartLine())
+							->build();
+					}
+					continue;
+				}
+
+				$attributeConstructor = $attributeClass->getConstructor();
+				if (!$attributeConstructor->isPublic()) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Constructor of attribute class %s is not public.', $name))
+						->identifier('attribute.constructorNotPublic')
+						->line($attribute->getStartLine())
+						->build();
+				}
+
+				$attributeClassName = SprintfHelper::escapeFormatString($attributeClass->getDisplayName());
+
+				$nodeAttributes = $attribute->getAttributes();
+				$nodeAttributes['isAttribute'] = true;
+
+				$parameterErrors = $this->functionCallParametersCheck->check(
+					ParametersAcceptorSelector::selectFromArgs(
+						$scope,
+						$attribute->args,
+						$attributeConstructor->getVariants(),
+						$attributeConstructor->getNamedArgumentsVariants(),
+					),
+					$scope,
+					$attributeConstructor->getDeclaringClass()->isBuiltin(),
+					new New_($attribute->name, $attribute->args, $nodeAttributes),
+					'attribute',
+					$attributeConstructor->acceptsNamedArguments(),
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameter, %d required.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameters, %d required.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameter, at least %d required.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameters, at least %d required.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameter, %d-%d required.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %d parameters, %d-%d required.',
+					'%s of attribute class ' . $attributeClassName . ' constructor expects %s, %s given.',
+					'', // constructor does not have a return type
+					'%s of attribute class ' . $attributeClassName . ' constructor is passed by reference, so it expects variables only',
+					'Unable to resolve the template type %s in instantiation of attribute class ' . $attributeClassName,
+					'Missing parameter $%s in call to ' . $attributeClassName . ' constructor.',
+					'Unknown parameter $%s in call to ' . $attributeClassName . ' constructor.',
+					'Return type of call to ' . $attributeClassName . ' constructor contains unresolvable type.',
+					'%s of attribute class ' . $attributeClassName . ' constructor contains unresolvable type.',
+					'Attribute class ' . $attributeClassName . ' constructor invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+				);
+
+				foreach ($parameterErrors as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Cast/EchoRule.php b/src/Rules/Cast/EchoRule.php
new file mode 100644
index 00000000..9288a85a
--- /dev/null
+++ b/src/Rules/Cast/EchoRule.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\Cast;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Echo_>
+ */
+final class EchoRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Echo_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = [];
+
+		foreach ($node->exprs as $key => $expr) {
+			$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				$expr,
+				'',
+				static fn (Type $type): bool => !$type->toString() instanceof ErrorType,
+			);
+
+			if ($typeResult->getType() instanceof ErrorType
+				|| !$typeResult->getType()->toString() instanceof ErrorType
+			) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Parameter #%d (%s) of echo cannot be converted to string.',
+				$key + 1,
+				$typeResult->getType()->describe(VerbosityLevel::value()),
+			))->identifier('echo.nonString')->line($expr->getStartLine())->build();
+		}
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Cast/InvalidCastRule.php b/src/Rules/Cast/InvalidCastRule.php
new file mode 100644
index 00000000..ac43282e
--- /dev/null
+++ b/src/Rules/Cast/InvalidCastRule.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Rules\Cast;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function get_class;
+use function sprintf;
+use function strtolower;
+use function substr;
+
+/**
+ * @implements Rule<Node\Expr\Cast>
+ */
+final class InvalidCastRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Cast::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$castTypeCallback = static function (Type $type) use ($node): ?array {
+			if ($node instanceof Node\Expr\Cast\Int_) {
+				return [$type->toInteger(), 'int'];
+			} elseif ($node instanceof Node\Expr\Cast\Bool_) {
+				return [$type->toBoolean(), 'bool'];
+			} elseif ($node instanceof Node\Expr\Cast\Double) {
+				return [$type->toFloat(), 'double'];
+			} elseif ($node instanceof Node\Expr\Cast\String_) {
+				return [$type->toString(), 'string'];
+			}
+
+			return null;
+		};
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->expr,
+			'',
+			static function (Type $type) use ($castTypeCallback): bool {
+				$castResult = $castTypeCallback($type);
+				if ($castResult === null) {
+					return true;
+				}
+
+				[$castType] = $castResult;
+
+				return !$castType instanceof ErrorType;
+			},
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return [];
+		}
+
+		$castResult = $castTypeCallback($type);
+		if ($castResult === null) {
+			return [];
+		}
+
+		[$castType, $castIdentifier] = $castResult;
+
+		if ($castType instanceof ErrorType) {
+			$classReflection = $this->reflectionProvider->getClass(get_class($node));
+			$shortName = $classReflection->getNativeReflection()->getShortName();
+			$shortName = strtolower($shortName);
+			if ($shortName === 'double') {
+				$shortName = 'float';
+			} else {
+				$shortName = substr($shortName, 0, -1);
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot cast %s to %s.',
+					$scope->getType($node->expr)->describe(VerbosityLevel::value()),
+					$shortName,
+				))->identifier(sprintf('cast.%s', $castIdentifier))->line($node->getStartLine())->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Cast/InvalidPartOfEncapsedStringRule.php b/src/Rules/Cast/InvalidPartOfEncapsedStringRule.php
new file mode 100644
index 00000000..054c22b3
--- /dev/null
+++ b/src/Rules/Cast/InvalidPartOfEncapsedStringRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Cast;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Scalar\InterpolatedString>
+ */
+final class InvalidPartOfEncapsedStringRule implements Rule
+{
+
+	public function __construct(
+		private ExprPrinter $exprPrinter,
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Scalar\InterpolatedString::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = [];
+		foreach ($node->parts as $part) {
+			if ($part instanceof Node\InterpolatedStringPart) {
+				continue;
+			}
+
+			$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				$part,
+				'',
+				static fn (Type $type): bool => !$type->toString() instanceof ErrorType,
+			);
+			$partType = $typeResult->getType();
+			if ($partType instanceof ErrorType) {
+				continue;
+			}
+
+			$stringPartType = $partType->toString();
+			if (!$stringPartType instanceof ErrorType) {
+				continue;
+			}
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Part %s (%s) of encapsed string cannot be cast to string.',
+				$this->exprPrinter->printExpr($part),
+				$partType->describe(VerbosityLevel::value()),
+			))->identifier('encapsedStringPart.nonString')->line($part->getStartLine())->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Cast/PrintRule.php b/src/Rules/Cast/PrintRule.php
new file mode 100644
index 00000000..f50f39e0
--- /dev/null
+++ b/src/Rules/Cast/PrintRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Cast;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Print_>
+ */
+final class PrintRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Print_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->expr,
+			'',
+			static fn (Type $type): bool => !$type->toString() instanceof ErrorType,
+		);
+
+		if (!$typeResult->getType() instanceof ErrorType
+			&& $typeResult->getType()->toString() instanceof ErrorType
+		) {
+			return [RuleErrorBuilder::message(sprintf(
+				'Parameter %s of print cannot be converted to string.',
+				$typeResult->getType()->describe(VerbosityLevel::value()),
+			))->identifier('print.nonString')->line($node->expr->getStartLine())->build()];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Cast/UnsetCastRule.php b/src/Rules/Cast/UnsetCastRule.php
new file mode 100644
index 00000000..4b674ae7
--- /dev/null
+++ b/src/Rules/Cast/UnsetCastRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\Cast;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Expr\Cast\Unset_>
+ */
+final class UnsetCastRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Cast\Unset_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($this->phpVersion->supportsUnsetCast()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('The (unset) cast is no longer supported in PHP 8.0 and later.')
+				->identifier('cast.unset')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/ClassCaseSensitivityCheck.php b/src/Rules/ClassCaseSensitivityCheck.php
new file mode 100644
index 00000000..b79b4e2e
--- /dev/null
+++ b/src/Rules/ClassCaseSensitivityCheck.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+use function sprintf;
+use function strtolower;
+
+final class ClassCaseSensitivityCheck
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider, private bool $checkInternalClassCaseSensitivity)
+	{
+	}
+
+	/**
+	 * @param ClassNameNodePair[] $pairs
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkClassNames(array $pairs): array
+	{
+		$errors = [];
+		foreach ($pairs as $pair) {
+			$className = $pair->getClassName();
+			if (!$this->reflectionProvider->hasClass($className)) {
+				continue;
+			}
+			$classReflection = $this->reflectionProvider->getClass($className);
+			if (!$this->checkInternalClassCaseSensitivity && $classReflection->isBuiltin()) {
+				continue; // skip built-in classes
+			}
+			$realClassName = $classReflection->getName();
+			if (strtolower($realClassName) !== strtolower($className)) {
+				continue; // skip class alias
+			}
+			if ($realClassName === $className) {
+				continue;
+			}
+
+			$typeName = $classReflection->getClassTypeDescription();
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s %s referenced with incorrect case: %s.',
+				$typeName,
+				$realClassName,
+				$className,
+			))
+				->identifier(sprintf('%s.nameCase', strtolower($typeName)))
+				->line($pair->getNode()->getStartLine())
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/ClassForbiddenNameCheck.php b/src/Rules/ClassForbiddenNameCheck.php
new file mode 100644
index 00000000..24ac149f
--- /dev/null
+++ b/src/Rules/ClassForbiddenNameCheck.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PHPStan\Classes\ForbiddenClassNameExtension;
+use PHPStan\DependencyInjection\Container;
+use function array_map;
+use function array_merge;
+use function sprintf;
+use function str_starts_with;
+use function strlen;
+use function strpos;
+use function substr;
+
+final class ClassForbiddenNameCheck
+{
+
+	private const INTERNAL_CLASS_PREFIXES = [
+		'PHPStan' => '_PHPStan_',
+		'Rector' => 'RectorPrefix',
+		'PHP-Scoper' => '_PhpScoper',
+		'PHPUnit' => 'PHPUnitPHAR',
+		'Box' => '_HumbugBox',
+	];
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	/**
+	 * @param ClassNameNodePair[] $pairs
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkClassNames(array $pairs): array
+	{
+		$extensions = $this->container->getServicesByTag(ForbiddenClassNameExtension::EXTENSION_TAG);
+
+		$classPrefixes = array_merge(
+			self::INTERNAL_CLASS_PREFIXES,
+			...array_map(
+				static fn (ForbiddenClassNameExtension $extension): array => $extension->getClassPrefixes(),
+				$extensions,
+			),
+		);
+
+		$errors = [];
+		foreach ($pairs as $pair) {
+			$className = $pair->getClassName();
+
+			$projectName = null;
+			$withoutPrefixClassName = null;
+			foreach ($classPrefixes as $project => $prefix) {
+				if (!str_starts_with($className, $prefix)) {
+					continue;
+				}
+
+				$projectName = $project;
+				$withoutPrefixClassName = substr($className, strlen($prefix));
+
+				if (strpos($withoutPrefixClassName, '\\') === false) {
+					continue;
+				}
+
+				$withoutPrefixClassName = substr($withoutPrefixClassName, strpos($withoutPrefixClassName, '\\'));
+			}
+
+			if ($projectName === null) {
+				continue;
+			}
+
+			$error = RuleErrorBuilder::message(sprintf(
+				'Referencing prefixed %s class: %s.',
+				$projectName,
+				$className,
+			))
+				->line($pair->getNode()->getStartLine())
+				->identifier('class.prefixed')
+				->nonIgnorable();
+
+			if ($withoutPrefixClassName !== null) {
+				$error->tip(sprintf(
+					'This is most likely unintentional. Did you mean to type %s?',
+					$withoutPrefixClassName,
+				));
+			}
+
+			$errors[] = $error->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/ClassNameCheck.php b/src/Rules/ClassNameCheck.php
new file mode 100644
index 00000000..d7cac511
--- /dev/null
+++ b/src/Rules/ClassNameCheck.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+final class ClassNameCheck
+{
+
+	public function __construct(
+		private ClassCaseSensitivityCheck $classCaseSensitivityCheck,
+		private ClassForbiddenNameCheck $classForbiddenNameCheck,
+	)
+	{
+	}
+
+	/**
+	 * @param ClassNameNodePair[] $pairs
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkClassNames(array $pairs, bool $checkClassCaseSensitivity = true): array
+	{
+		$errors = [];
+
+		if ($checkClassCaseSensitivity) {
+			foreach ($this->classCaseSensitivityCheck->checkClassNames($pairs) as $error) {
+				$errors[] = $error;
+			}
+		}
+		foreach ($this->classForbiddenNameCheck->checkClassNames($pairs) as $error) {
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/ClassNameNodePair.php b/src/Rules/ClassNameNodePair.php
new file mode 100644
index 00000000..a1fd1dcd
--- /dev/null
+++ b/src/Rules/ClassNameNodePair.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+
+final class ClassNameNodePair
+{
+
+	public function __construct(private string $className, private Node $node)
+	{
+	}
+
+	public function getClassName(): string
+	{
+		return $this->className;
+	}
+
+	public function getNode(): Node
+	{
+		return $this->node;
+	}
+
+}
diff --git a/src/Rules/Classes/AccessPrivateConstantThroughStaticRule.php b/src/Rules/Classes/AccessPrivateConstantThroughStaticRule.php
new file mode 100644
index 00000000..547768bf
--- /dev/null
+++ b/src/Rules/Classes/AccessPrivateConstantThroughStaticRule.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\ClassConstFetch>
+ */
+final class AccessPrivateConstantThroughStaticRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ClassConstFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+		if (!$node->class instanceof Name) {
+			return [];
+		}
+
+		$constantName = $node->name->name;
+		$className = $node->class;
+		if ($className->toLowerString() !== 'static') {
+			return [];
+		}
+
+		$classType = $scope->resolveTypeByName($className);
+		if (!$classType->hasConstant($constantName)->yes()) {
+			return [];
+		}
+
+		$constant = $classType->getConstant($constantName);
+		if (!$constant->isPrivate()) {
+			return [];
+		}
+
+		if ($scope->isInClass() && $scope->getClassReflection()->isFinal()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Unsafe access to private constant %s::%s through static::.',
+				$constant->getDeclaringClass()->getDisplayName(),
+				$constantName,
+			))->identifier('staticClassAccess.privateConstant')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Classes/AllowedSubTypesRule.php b/src/Rules/Classes/AllowedSubTypesRule.php
new file mode 100644
index 00000000..838a9ccf
--- /dev/null
+++ b/src/Rules/Classes/AllowedSubTypesRule.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_values;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class AllowedSubTypesRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	/**
+	 * @param InClassNode $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$className = $classReflection->getName();
+
+		$parents = array_values($classReflection->getImmediateInterfaces());
+		$parentClass = $classReflection->getParentClass();
+		if ($parentClass !== null) {
+			$parents[] = $parentClass;
+		}
+
+		$messages = [];
+
+		foreach ($parents as $parentReflection) {
+			$allowedSubTypes = $parentReflection->getAllowedSubTypes();
+			if ($allowedSubTypes === null) {
+				continue;
+			}
+
+			foreach ($allowedSubTypes as $allowedSubType) {
+				if (!$allowedSubType->isObject()->yes()) {
+					continue;
+				}
+
+				if ($allowedSubType->getObjectClassNames() === [$className]) {
+					continue 2;
+				}
+			}
+
+			$identifierType = strtolower($classReflection->getClassTypeDescription());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Type %s is not allowed to be a subtype of %s.',
+				$className,
+				$parentReflection->getName(),
+			))->identifier(sprintf('%s.disallowedSubtype', $identifierType))->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ClassAttributesRule.php b/src/Rules/Classes/ClassAttributesRule.php
new file mode 100644
index 00000000..d9a3d257
--- /dev/null
+++ b/src/Rules/Classes/ClassAttributesRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class ClassAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classLikeNode = $node->getOriginalNode();
+
+		$errors = $this->attributesCheck->check(
+			$scope,
+			$classLikeNode->attrGroups,
+			Attribute::TARGET_CLASS,
+			'class',
+		);
+
+		$classReflection = $node->getClassReflection();
+		if (
+			$classReflection->isReadOnly()
+			|| $classReflection->isEnum()
+			|| $classReflection->isInterface()
+		) {
+			$typeName = 'readonly class';
+			$identifier = 'class.allowDynamicPropertiesReadonly';
+			if ($classReflection->isEnum()) {
+				$typeName = 'enum';
+				$identifier = 'enum.allowDynamicProperties';
+			}
+			if ($classReflection->isInterface()) {
+				$typeName = 'interface';
+				$identifier = 'interface.allowDynamicProperties';
+			}
+
+			if (count($classReflection->getNativeReflection()->getAttributes('AllowDynamicProperties')) > 0) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Attribute class AllowDynamicProperties cannot be used with %s.', $typeName))
+					->identifier($identifier)
+					->nonIgnorable()
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/ClassConstantAttributesRule.php b/src/Rules/Classes/ClassConstantAttributesRule.php
new file mode 100644
index 00000000..063b4075
--- /dev/null
+++ b/src/Rules/Classes/ClassConstantAttributesRule.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class ClassConstantAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->attrGroups,
+			Attribute::TARGET_CLASS_CONSTANT,
+			'class constant',
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/ClassConstantRule.php b/src/Rules/Classes/ClassConstantRule.php
new file mode 100644
index 00000000..b6c0fbb3
--- /dev/null
+++ b/src/Rules/Classes/ClassConstantRule.php
@@ -0,0 +1,208 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\ClassConstFetch>
+ */
+final class ClassConstantRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+		private ClassNameCheck $classCheck,
+		private PhpVersion $phpVersion,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassConstFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+		$constantName = $node->name->name;
+
+		$class = $node->class;
+		$messages = [];
+		if ($class instanceof Node\Name) {
+			$className = (string) $class;
+			$lowercasedClassName = strtolower($className);
+			if (in_array($lowercasedClassName, ['self', 'static'], true)) {
+				if (!$scope->isInClass()) {
+					return [
+						RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $className))
+							->identifier(sprintf('outOfClass.%s', $lowercasedClassName))
+							->build(),
+					];
+				}
+
+				$classType = $scope->resolveTypeByName($class);
+			} elseif ($lowercasedClassName === 'parent') {
+				if (!$scope->isInClass()) {
+					return [
+						RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $className))
+							->identifier(sprintf('outOfClass.%s', $lowercasedClassName))
+							->build(),
+					];
+				}
+				$currentClassReflection = $scope->getClassReflection();
+				if ($currentClassReflection->getParentClass() === null) {
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'Access to parent::%s but %s does not extend any class.',
+							$constantName,
+							$currentClassReflection->getDisplayName(),
+						))->identifier('class.noParent')->build(),
+					];
+				}
+				$classType = $scope->resolveTypeByName($class);
+			} else {
+				if (!$this->reflectionProvider->hasClass($className)) {
+					if ($scope->isInClassExists($className)) {
+						return [];
+					}
+
+					if (strtolower($constantName) === 'class') {
+						return [
+							RuleErrorBuilder::message(sprintf('Class %s not found.', $className))
+								->identifier('class.notFound')
+								->discoveringSymbolsTip()
+								->build(),
+						];
+					}
+
+					return [
+						RuleErrorBuilder::message(
+							sprintf('Access to constant %s on an unknown class %s.', $constantName, $className),
+						)
+							->identifier('class.notFound')
+							->discoveringSymbolsTip()
+							->build(),
+					];
+				}
+
+				$messages = $this->classCheck->checkClassNames([new ClassNameNodePair($className, $class)]);
+
+				$classType = $scope->resolveTypeByName($class);
+			}
+
+			if (strtolower($constantName) === 'class') {
+				return $messages;
+			}
+		} else {
+			$classTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $class),
+				sprintf('Access to constant %s on an unknown class %%s.', SprintfHelper::escapeFormatString($constantName)),
+				static fn (Type $type): bool => $type->canAccessConstants()->yes() && $type->hasConstant($constantName)->yes(),
+			);
+			$classType = $classTypeResult->getType();
+			if ($classType instanceof ErrorType) {
+				return $classTypeResult->getUnknownClassErrors();
+			}
+
+			if (strtolower($constantName) === 'class') {
+				if (!$this->phpVersion->supportsClassConstantOnExpression()) {
+					return [
+						RuleErrorBuilder::message('Accessing ::class constant on an expression is supported only on PHP 8.0 and later.')
+							->identifier('classConstant.notSupported')
+							->nonIgnorable()
+							->build(),
+					];
+				}
+
+				if (!$class instanceof Node\Scalar\String_ && $classType->isString()->yes()) {
+					return [
+						RuleErrorBuilder::message('Accessing ::class constant on a dynamic string is not supported in PHP.')
+							->identifier('classConstant.dynamicString')
+							->nonIgnorable()
+							->build(),
+					];
+				}
+			}
+		}
+
+		if ($classType->isString()->yes()) {
+			return $messages;
+		}
+
+		$typeForDescribe = $classType;
+		if ($classType instanceof ThisType) {
+			$typeForDescribe = $classType->getStaticObjectType();
+		}
+		$classType = TypeCombinator::remove($classType, new StringType());
+
+		if (!$classType->canAccessConstants()->yes()) {
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot access constant %s on %s.',
+					$constantName,
+					$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+				))->identifier('classConstant.nonObject')->build(),
+			]);
+		}
+
+		if (strtolower($constantName) === 'class' || $scope->hasExpressionType($node)->yes()) {
+			return $messages;
+		}
+
+		if (!$classType->hasConstant($constantName)->yes()) {
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Access to undefined constant %s::%s.',
+					$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+					$constantName,
+				))->identifier('classConstant.notFound')->build(),
+			]);
+		}
+
+		$constantReflection = $classType->getConstant($constantName);
+		if (!$scope->canAccessConstant($constantReflection)) {
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Access to %s constant %s of class %s.',
+					$constantReflection->isPrivate() ? 'private' : 'protected',
+					$constantName,
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+				))->identifier(sprintf(
+					'classConstant.%s',
+					$constantReflection->isPrivate() ? 'private' : 'protected',
+				))->build(),
+			]);
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/DuplicateClassDeclarationRule.php b/src/Rules/Classes/DuplicateClassDeclarationRule.php
new file mode 100644
index 00000000..e54112fd
--- /dev/null
+++ b/src/Rules/Classes/DuplicateClassDeclarationRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\ReflectionClass;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_filter;
+use function array_map;
+use function count;
+use function implode;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class DuplicateClassDeclarationRule implements Rule
+{
+
+	public function __construct(private Reflector $reflector, private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$thisClass = $node->getClassReflection();
+		$className = $thisClass->getName();
+		$allClasses = $this->reflector->reflectAllClasses();
+		$filteredClasses = [];
+		foreach ($allClasses as $reflectionClass) {
+			if ($reflectionClass->getName() !== $className) {
+				continue;
+			}
+
+			$filteredClasses[] = $reflectionClass;
+		}
+
+		if (count($filteredClasses) < 2) {
+			return [];
+		}
+
+		$filteredClasses = array_filter($filteredClasses, static fn (ReflectionClass $class) => $class->getStartLine() !== $thisClass->getNativeReflection()->getStartLine());
+
+		$identifierType = strtolower($thisClass->getClassTypeDescription());
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				"Class %s declared multiple times:\n%s",
+				$thisClass->getDisplayName(),
+				implode("\n", array_map(fn (ReflectionClass $class) => sprintf('- %s:%d', $this->relativePathHelper->getRelativePath($class->getFileName() ?? 'unknown'), $class->getStartLine()), $filteredClasses)),
+			))->identifier(sprintf('%s.duplicate', $identifierType))->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Classes/DuplicateDeclarationRule.php b/src/Rules/Classes/DuplicateDeclarationRule.php
new file mode 100644
index 00000000..baeccead
--- /dev/null
+++ b/src/Rules/Classes/DuplicateDeclarationRule.php
@@ -0,0 +1,134 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\EnumCase;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function is_string;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class DuplicateDeclarationRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+
+		$identifierType = strtolower($classReflection->getClassTypeDescription());
+
+		$errors = [];
+
+		$declaredClassConstantsOrEnumCases = [];
+		foreach ($node->getOriginalNode()->stmts as $stmtNode) {
+			if ($stmtNode instanceof EnumCase) {
+				if (array_key_exists($stmtNode->name->name, $declaredClassConstantsOrEnumCases)) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Cannot redeclare enum case %s::%s.',
+						$classReflection->getDisplayName(),
+						$stmtNode->name->name,
+					))->identifier(sprintf('%s.duplicateEnumCase', $identifierType))
+						->line($stmtNode->getStartLine())
+						->nonIgnorable()
+						->build();
+				} else {
+					$declaredClassConstantsOrEnumCases[$stmtNode->name->name] = true;
+				}
+			} elseif ($stmtNode instanceof ClassConst) {
+				foreach ($stmtNode->consts as $classConstNode) {
+					if (array_key_exists($classConstNode->name->name, $declaredClassConstantsOrEnumCases)) {
+						$errors[] = RuleErrorBuilder::message(sprintf(
+							'Cannot redeclare constant %s::%s.',
+							$classReflection->getDisplayName(),
+							$classConstNode->name->name,
+						))->identifier(sprintf('%s.duplicateConstant', $identifierType))
+							->line($classConstNode->getStartLine())
+							->nonIgnorable()
+							->build();
+					} else {
+						$declaredClassConstantsOrEnumCases[$classConstNode->name->name] = true;
+					}
+				}
+			}
+		}
+
+		$declaredProperties = [];
+		foreach ($node->getOriginalNode()->getProperties() as $propertyDecl) {
+			foreach ($propertyDecl->props as $property) {
+				if (array_key_exists($property->name->name, $declaredProperties)) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Cannot redeclare property %s::$%s.',
+						$classReflection->getDisplayName(),
+						$property->name->name,
+					))->identifier(sprintf('%s.duplicateProperty', $identifierType))
+						->line($property->getStartLine())
+						->nonIgnorable()
+						->build();
+				} else {
+					$declaredProperties[$property->name->name] = true;
+				}
+			}
+		}
+
+		$declaredFunctions = [];
+		foreach ($node->getOriginalNode()->getMethods() as $method) {
+			if ($method->name->toLowerString() === '__construct') {
+				foreach ($method->params as $param) {
+					if ($param->flags === 0) {
+						continue;
+					}
+
+					if (!$param->var instanceof Node\Expr\Variable || !is_string($param->var->name)) {
+						throw new ShouldNotHappenException();
+					}
+
+					$propertyName = $param->var->name;
+
+					if (array_key_exists($propertyName, $declaredProperties)) {
+						$errors[] = RuleErrorBuilder::message(sprintf(
+							'Cannot redeclare property %s::$%s.',
+							$classReflection->getDisplayName(),
+							$propertyName,
+						))->identifier(sprintf('%s.duplicateProperty', $identifierType))
+							->line($param->getStartLine())
+							->nonIgnorable()
+							->build();
+					} else {
+						$declaredProperties[$propertyName] = true;
+					}
+				}
+			}
+			if (array_key_exists(strtolower($method->name->name), $declaredFunctions)) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Cannot redeclare method %s::%s().',
+					$classReflection->getDisplayName(),
+					$method->name->name,
+				))->identifier(sprintf('%s.duplicateMethod', $identifierType))
+					->line($method->getStartLine())
+					->nonIgnorable()
+					->build();
+			} else {
+				$declaredFunctions[strtolower($method->name->name)] = true;
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/EnumSanityRule.php b/src/Rules/Classes/EnumSanityRule.php
new file mode 100644
index 00000000..4a606fb7
--- /dev/null
+++ b/src/Rules/Classes/EnumSanityRule.php
@@ -0,0 +1,227 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\VerbosityLevel;
+use Serializable;
+use function array_key_exists;
+use function count;
+use function implode;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class EnumSanityRule implements Rule
+{
+
+	private const ALLOWED_MAGIC_METHODS = [
+		'__call' => true,
+		'__callstatic' => true,
+		'__invoke' => true,
+	];
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$classReflection->isEnum()) {
+			return [];
+		}
+
+		/** @var Node\Stmt\Enum_ $enumNode */
+		$enumNode = $node->getOriginalNode();
+
+		$errors = [];
+
+		foreach ($enumNode->getMethods() as $methodNode) {
+			$lowercasedMethodName = $methodNode->name->toLowerString();
+			if ($methodNode->isMagic()) {
+				if ($lowercasedMethodName === '__construct') {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s contains constructor.',
+						$classReflection->getDisplayName(),
+					))
+						->identifier('enum.constructor')
+						->line($methodNode->getStartLine())
+						->nonIgnorable()
+						->build();
+				} elseif ($lowercasedMethodName === '__destruct') {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s contains destructor.',
+						$classReflection->getDisplayName(),
+					))
+						->identifier('enum.destructor')
+						->line($methodNode->getStartLine())
+						->nonIgnorable()
+						->build();
+				} elseif (!array_key_exists($lowercasedMethodName, self::ALLOWED_MAGIC_METHODS)) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s contains magic method %s().',
+						$classReflection->getDisplayName(),
+						$methodNode->name->name,
+					))
+						->identifier('enum.magicMethod')
+						->line($methodNode->getStartLine())
+						->nonIgnorable()
+						->build();
+				}
+			}
+
+			if ($lowercasedMethodName === 'cases') {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Enum %s cannot redeclare native method %s().',
+					$classReflection->getDisplayName(),
+					$methodNode->name->name,
+				))
+					->identifier('enum.methodRedeclaration')
+					->line($methodNode->getStartLine())
+					->nonIgnorable()
+					->build();
+			}
+
+			if ($enumNode->scalarType === null) {
+				continue;
+			}
+
+			if (!in_array($lowercasedMethodName, ['from', 'tryfrom'], true)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Enum %s cannot redeclare native method %s().',
+				$classReflection->getDisplayName(),
+				$methodNode->name->name,
+			))
+				->identifier('enum.methodRedeclaration')
+				->line($methodNode->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		if (
+			$enumNode->scalarType !== null
+			&& !in_array($enumNode->scalarType->name, ['int', 'string'], true)
+		) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Backed enum %s can have only "int" or "string" type.',
+				$classReflection->getDisplayName(),
+			))
+				->identifier('enum.backingType')
+				->line($enumNode->scalarType->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		if ($classReflection->implementsInterface(Serializable::class)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Enum %s cannot implement the Serializable interface.',
+				$classReflection->getDisplayName(),
+			))
+				->identifier('enum.serializable')
+				->line($enumNode->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		$enumCases = [];
+		foreach ($enumNode->stmts as $stmt) {
+			if (!$stmt instanceof Node\Stmt\EnumCase) {
+				continue;
+			}
+			$caseName = $stmt->name->name;
+
+			if ($stmt->expr instanceof Node\Scalar\Int_ || $stmt->expr instanceof Node\Scalar\String_) {
+				if ($enumNode->scalarType === null) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s is not backed, but case %s has value %s.',
+						$classReflection->getDisplayName(),
+						$caseName,
+						$stmt->expr->value,
+					))
+						->identifier('enum.caseWithValue')
+						->line($stmt->getStartLine())
+						->nonIgnorable()
+						->build();
+				} else {
+					$caseValue = $stmt->expr->value;
+
+					if (!isset($enumCases[$caseValue])) {
+						$enumCases[$caseValue] = [];
+					}
+
+					$enumCases[$caseValue][] = $caseName;
+				}
+			}
+
+			if ($enumNode->scalarType === null) {
+				continue;
+			}
+
+			if ($stmt->expr === null) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Enum case %s::%s does not have a value but the enum is backed with the "%s" type.',
+					$classReflection->getDisplayName(),
+					$caseName,
+					$enumNode->scalarType->name,
+				))
+					->identifier('enum.missingCase')
+					->line($stmt->getStartLine())
+					->nonIgnorable()
+					->build();
+				continue;
+			}
+
+			$exprType = $scope->getType($stmt->expr);
+			$scalarType = $enumNode->scalarType->toLowerString() === 'int' ? new IntegerType() : new StringType();
+			if ($scalarType->isSuperTypeOf($exprType)->yes()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Enum case %s::%s value %s does not match the "%s" type.',
+				$classReflection->getDisplayName(),
+				$caseName,
+				$exprType->describe(VerbosityLevel::value()),
+				$scalarType->describe(VerbosityLevel::typeOnly()),
+			))
+				->identifier('enum.caseType')
+				->line($stmt->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		foreach ($enumCases as $caseValue => $caseNames) {
+			if (count($caseNames) <= 1) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Enum %s has duplicate value %s for cases %s.',
+				$classReflection->getDisplayName(),
+				$caseValue,
+				implode(', ', $caseNames),
+			))
+				->identifier('enum.duplicateValue')
+				->line($enumNode->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassInClassExtendsRule.php b/src/Rules/Classes/ExistingClassInClassExtendsRule.php
new file mode 100644
index 00000000..c2aa54f8
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassInClassExtendsRule.php
@@ -0,0 +1,132 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Class_>
+ */
+final class ExistingClassInClassExtendsRule implements Rule
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Class_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->extends === null) {
+			return [];
+		}
+		$extendedClassName = (string) $node->extends;
+		$messages = $this->classCheck->checkClassNames([new ClassNameNodePair($extendedClassName, $node->extends)]);
+		$currentClassName = null;
+		if (isset($node->namespacedName)) {
+			$currentClassName = (string) $node->namespacedName;
+		}
+		if (!$this->reflectionProvider->hasClass($extendedClassName)) {
+			if (!$scope->isInClassExists($extendedClassName)) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends unknown class %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$extendedClassName,
+				))
+					->identifier('class.notFound')
+					->nonIgnorable()
+					->discoveringSymbolsTip()
+					->build();
+			}
+		} else {
+			$reflection = $this->reflectionProvider->getClass($extendedClassName);
+			if ($reflection->isInterface()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends interface %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$reflection->getDisplayName(),
+				))
+					->identifier('class.extendsInterface')
+					->nonIgnorable()
+					->build();
+			} elseif ($reflection->isTrait()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends trait %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$reflection->getDisplayName(),
+				))
+					->identifier('class.extendsTrait')
+					->nonIgnorable()
+					->build();
+			} elseif ($reflection->isEnum()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends enum %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$reflection->getDisplayName(),
+				))
+					->identifier('class.extendsEnum')
+					->nonIgnorable()
+					->build();
+			} elseif ($reflection->isFinalByKeyword()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends final class %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$reflection->getDisplayName(),
+				))
+					->identifier('class.extendsFinal')
+					->nonIgnorable()
+					->build();
+			} elseif ($reflection->isFinal()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s extends @final class %s.',
+					$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+					$reflection->getDisplayName(),
+				))
+					->identifier('class.extendsFinalByPhpDoc')
+					->build();
+			}
+
+			if ($reflection->isClass()) {
+				if ($node->isReadonly()) {
+					if (!$reflection->isReadOnly()) {
+						$messages[] = RuleErrorBuilder::message(sprintf(
+							'%s extends non-readonly class %s.',
+							$currentClassName !== null ? sprintf('Readonly class %s', $currentClassName) : 'Anonymous readonly class',
+							$reflection->getDisplayName(),
+						))
+							->identifier('class.readOnly')
+							->nonIgnorable()
+							->build();
+					}
+				} elseif ($reflection->isReadOnly()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'%s extends readonly class %s.',
+						$currentClassName !== null ? sprintf('Non-readonly class %s', $currentClassName) : 'Anonymous non-readonly class',
+						$reflection->getDisplayName(),
+					))
+						->identifier('class.nonReadOnly')
+						->nonIgnorable()
+						->build();
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassInInstanceOfRule.php b/src/Rules/Classes/ExistingClassInInstanceOfRule.php
new file mode 100644
index 00000000..f888e184
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassInInstanceOfRule.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Instanceof_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\Instanceof_>
+ */
+final class ExistingClassInInstanceOfRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Instanceof_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$class = $node->class;
+		if (!($class instanceof Node\Name)) {
+			return [];
+		}
+
+		$name = (string) $class;
+		$lowercaseName = strtolower($name);
+
+		if (in_array($lowercaseName, [
+			'self',
+			'static',
+			'parent',
+		], true)) {
+			if (!$scope->isInClass()) {
+				return [
+					RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $lowercaseName))
+						->identifier(sprintf('outOfClass.%s', $lowercaseName))
+						->line($class->getStartLine())
+						->build(),
+				];
+			}
+
+			return [];
+		}
+
+		$errors = [];
+
+		if (!$this->reflectionProvider->hasClass($name)) {
+			if ($scope->isInClassExists($name)) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf('Class %s not found.', $name))
+					->identifier('class.notFound')
+					->line($class->getStartLine())
+					->discoveringSymbolsTip()
+					->build(),
+			];
+		}
+
+		$errors = array_merge(
+			$errors,
+			$this->classCheck->checkClassNames(
+				[new ClassNameNodePair($name, $class)],
+				$this->checkClassCaseSensitivity,
+			),
+		);
+
+		$classReflection = $this->reflectionProvider->getClass($name);
+
+		if ($classReflection->isTrait()) {
+			$expressionType = $scope->getType($node->expr);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Instanceof between %s and trait %s will always evaluate to false.',
+				$expressionType->describe(VerbosityLevel::typeOnly()),
+				$name,
+			))->identifier('instanceof.trait')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassInTraitUseRule.php b/src/Rules/Classes/ExistingClassInTraitUseRule.php
new file mode 100644
index 00000000..b0a23919
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassInTraitUseRule.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function array_map;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\TraitUse>
+ */
+final class ExistingClassInTraitUseRule implements Rule
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\TraitUse::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = $this->classCheck->checkClassNames(
+			array_map(static fn (Node\Name $traitName): ClassNameNodePair => new ClassNameNodePair((string) $traitName, $traitName), $node->traits),
+		);
+
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$classReflection = $scope->getClassReflection();
+		if ($classReflection->isInterface()) {
+			if (!$scope->isInTrait()) {
+				foreach ($node->traits as $trait) {
+					$messages[] = RuleErrorBuilder::message(sprintf('Interface %s uses trait %s.', $classReflection->getName(), (string) $trait))
+						->identifier('interface.traitUse')
+						->nonIgnorable()
+						->build();
+				}
+			}
+		} else {
+			if ($scope->isInTrait()) {
+				$currentName = sprintf('Trait %s', $scope->getTraitReflection()->getName());
+			} else {
+				if ($classReflection->isAnonymous()) {
+					$currentName = 'Anonymous class';
+				} else {
+					$currentName = sprintf('Class %s', $classReflection->getName());
+				}
+			}
+			foreach ($node->traits as $trait) {
+				$traitName = (string) $trait;
+				if (!$this->reflectionProvider->hasClass($traitName)) {
+					$messages[] = RuleErrorBuilder::message(sprintf('%s uses unknown trait %s.', $currentName, $traitName))
+						->identifier('trait.notFound')
+						->nonIgnorable()
+						->discoveringSymbolsTip()
+						->build();
+				} else {
+					$reflection = $this->reflectionProvider->getClass($traitName);
+					if ($reflection->isClass()) {
+						$messages[] = RuleErrorBuilder::message(sprintf('%s uses class %s.', $currentName, $reflection->getDisplayName()))
+							->identifier('traitUse.class')
+							->nonIgnorable()
+							->build();
+					} elseif ($reflection->isInterface()) {
+						$messages[] = RuleErrorBuilder::message(sprintf('%s uses interface %s.', $currentName, $reflection->getDisplayName()))
+							->identifier('traitUse.interface')
+							->nonIgnorable()
+							->build();
+					} elseif ($reflection->isEnum()) {
+						$messages[] = RuleErrorBuilder::message(sprintf('%s uses enum %s.', $currentName, $reflection->getDisplayName()))
+							->identifier('traitUse.enum')
+							->nonIgnorable()
+							->build();
+					}
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassesInClassImplementsRule.php b/src/Rules/Classes/ExistingClassesInClassImplementsRule.php
new file mode 100644
index 00000000..c6518ace
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassesInClassImplementsRule.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_map;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Class_>
+ */
+final class ExistingClassesInClassImplementsRule implements Rule
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Class_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = $this->classCheck->checkClassNames(
+			array_map(static fn (Node\Name $interfaceName): ClassNameNodePair => new ClassNameNodePair((string) $interfaceName, $interfaceName), $node->implements),
+		);
+
+		$currentClassName = null;
+		if (isset($node->namespacedName)) {
+			$currentClassName = (string) $node->namespacedName;
+		}
+
+		foreach ($node->implements as $implements) {
+			$implementedClassName = (string) $implements;
+			if (!$this->reflectionProvider->hasClass($implementedClassName)) {
+				if (!$scope->isInClassExists($implementedClassName)) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'%s implements unknown interface %s.',
+						$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+						$implementedClassName,
+					))
+						->identifier('interface.notFound')
+						->nonIgnorable()
+						->discoveringSymbolsTip()
+						->build();
+				}
+			} else {
+				$reflection = $this->reflectionProvider->getClass($implementedClassName);
+				if ($reflection->isClass()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'%s implements class %s.',
+						$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+						$reflection->getDisplayName(),
+					))
+						->identifier('classImplements.class')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isTrait()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'%s implements trait %s.',
+						$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+						$reflection->getDisplayName(),
+					))
+						->identifier('classImplements.trait')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isEnum()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'%s implements enum %s.',
+						$currentClassName !== null ? sprintf('Class %s', $currentClassName) : 'Anonymous class',
+						$reflection->getDisplayName(),
+					))
+						->identifier('classImplements.enum')
+						->nonIgnorable()
+						->build();
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassesInEnumImplementsRule.php b/src/Rules/Classes/ExistingClassesInEnumImplementsRule.php
new file mode 100644
index 00000000..dd9764a4
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassesInEnumImplementsRule.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_map;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Enum_>
+ */
+final class ExistingClassesInEnumImplementsRule implements Rule
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Enum_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = $this->classCheck->checkClassNames(
+			array_map(static fn (Node\Name $interfaceName): ClassNameNodePair => new ClassNameNodePair((string) $interfaceName, $interfaceName), $node->implements),
+		);
+
+		$currentEnumName = (string) $node->namespacedName;
+
+		foreach ($node->implements as $implements) {
+			$implementedClassName = (string) $implements;
+			if (!$this->reflectionProvider->hasClass($implementedClassName)) {
+				if (!$scope->isInClassExists($implementedClassName)) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s implements unknown interface %s.',
+						$currentEnumName,
+						$implementedClassName,
+					))
+						->identifier('interface.notFound')
+						->nonIgnorable()
+						->discoveringSymbolsTip()
+						->build();
+				}
+			} else {
+				$reflection = $this->reflectionProvider->getClass($implementedClassName);
+				if ($reflection->isClass()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s implements class %s.',
+						$currentEnumName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('enumImplements.class')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isTrait()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s implements trait %s.',
+						$currentEnumName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('enumImplements.trait')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isEnum()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Enum %s implements enum %s.',
+						$currentEnumName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('enumImplements.enum')
+						->nonIgnorable()
+						->build();
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ExistingClassesInInterfaceExtendsRule.php b/src/Rules/Classes/ExistingClassesInInterfaceExtendsRule.php
new file mode 100644
index 00000000..a410ce8b
--- /dev/null
+++ b/src/Rules/Classes/ExistingClassesInInterfaceExtendsRule.php
@@ -0,0 +1,93 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_map;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Interface_>
+ */
+final class ExistingClassesInInterfaceExtendsRule implements Rule
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Interface_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = $this->classCheck->checkClassNames(
+			array_map(static fn (Node\Name $interfaceName): ClassNameNodePair => new ClassNameNodePair((string) $interfaceName, $interfaceName), $node->extends),
+		);
+
+		$currentInterfaceName = (string) $node->namespacedName;
+		foreach ($node->extends as $extends) {
+			$extendedInterfaceName = (string) $extends;
+			if (!$this->reflectionProvider->hasClass($extendedInterfaceName)) {
+				if (!$scope->isInClassExists($extendedInterfaceName)) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Interface %s extends unknown interface %s.',
+						$currentInterfaceName,
+						$extendedInterfaceName,
+					))
+						->identifier('interface.notFound')
+						->nonIgnorable()
+						->discoveringSymbolsTip()
+						->build();
+				}
+			} else {
+				$reflection = $this->reflectionProvider->getClass($extendedInterfaceName);
+				if ($reflection->isClass()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Interface %s extends class %s.',
+						$currentInterfaceName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('interfaceExtends.class')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isTrait()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Interface %s extends trait %s.',
+						$currentInterfaceName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('interfaceExtends.trait')
+						->nonIgnorable()
+						->build();
+				} elseif ($reflection->isEnum()) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						'Interface %s extends enum %s.',
+						$currentInterfaceName,
+						$reflection->getDisplayName(),
+					))
+						->identifier('interfaceExtends.enum')
+						->nonIgnorable()
+						->build();
+				}
+			}
+
+			return $messages;
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/ImpossibleInstanceOfRule.php b/src/Rules/Classes/ImpossibleInstanceOfRule.php
new file mode 100644
index 00000000..e2757847
--- /dev/null
+++ b/src/Rules/Classes/ImpossibleInstanceOfRule.php
@@ -0,0 +1,114 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Instanceof_>
+ */
+final class ImpossibleInstanceOfRule implements Rule
+{
+
+	public function __construct(
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Instanceof_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$instanceofType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node) : $scope->getNativeType($node);
+		if (!$instanceofType instanceof ConstantBooleanType) {
+			return [];
+		}
+
+		if ($node->class instanceof Node\Name) {
+			$className = $scope->resolveName($node->class);
+			$classType = new ObjectType($className);
+		} else {
+			$classType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node->class) : $scope->getNativeType($node->class);
+			$allowed = TypeCombinator::union(
+				new StringType(),
+				new ObjectWithoutClassType(),
+			);
+			if (!$allowed->isSuperTypeOf($classType)->yes()) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Instanceof between %s and %s results in an error.',
+						$scope->getType($node->expr)->describe(VerbosityLevel::typeOnly()),
+						$classType->describe(VerbosityLevel::typeOnly()),
+					))->identifier('instanceof.invalidExprType')->build(),
+				];
+			}
+		}
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$instanceofTypeWithoutPhpDocs = $scope->getNativeType($node);
+			if ($instanceofTypeWithoutPhpDocs instanceof ConstantBooleanType) {
+				return $ruleErrorBuilder;
+			}
+
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		if (!$instanceofType->getValue()) {
+			$exprType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node->expr) : $scope->getNativeType($node->expr);
+
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Instanceof between %s and %s will always evaluate to false.',
+					$exprType->describe(VerbosityLevel::typeOnly()),
+					$classType->describe(VerbosityLevel::getRecommendedLevelByType($classType)),
+				)))->identifier('instanceof.alwaysFalse')->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$exprType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node->expr) : $scope->getNativeType($node->expr);
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Instanceof between %s and %s will always evaluate to true.',
+			$exprType->describe(VerbosityLevel::typeOnly()),
+			$classType->describe(VerbosityLevel::getRecommendedLevelByType($classType)),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		$errorBuilder->identifier('instanceof.alwaysTrue');
+
+		return [$errorBuilder->build()];
+	}
+
+}
diff --git a/src/Rules/Classes/InstantiationCallableRule.php b/src/Rules/Classes/InstantiationCallableRule.php
new file mode 100644
index 00000000..509af0b7
--- /dev/null
+++ b/src/Rules/Classes/InstantiationCallableRule.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InstantiationCallableNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<InstantiationCallableNode>
+ */
+final class InstantiationCallableRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InstantiationCallableNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return [
+			RuleErrorBuilder::message('Cannot create callable from the new operator.')
+				->identifier('callable.notSupported')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Classes/InstantiationRule.php b/src/Rules/Classes/InstantiationRule.php
new file mode 100644
index 00000000..3384c414
--- /dev/null
+++ b/src/Rules/Classes/InstantiationRule.php
@@ -0,0 +1,277 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\New_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantStringType;
+use function array_filter;
+use function array_map;
+use function array_merge;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\New_>
+ */
+final class InstantiationRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private FunctionCallParametersCheck $check,
+		private ClassNameCheck $classCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return New_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($this->getClassNames($node, $scope) as [$class, $isName]) {
+			$errors = array_merge($errors, $this->checkClassName($class, $isName, $node, $scope));
+		}
+		return $errors;
+	}
+
+	/**
+	 * @param Node\Expr\New_ $node
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkClassName(string $class, bool $isName, Node $node, Scope $scope): array
+	{
+		$lowercasedClass = strtolower($class);
+		$messages = [];
+		$isStatic = false;
+		if ($lowercasedClass === 'static') {
+			if (!$scope->isInClass()) {
+				return [
+					RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $class))
+						->identifier('outOfClass.static')
+						->build(),
+				];
+			}
+
+			$isStatic = true;
+			$classReflection = $scope->getClassReflection();
+			if (!$classReflection->isFinal()) {
+				if (!$classReflection->hasConstructor()) {
+					return [];
+				}
+
+				$constructor = $classReflection->getConstructor();
+				if (
+					!$constructor->getPrototype()->getDeclaringClass()->isInterface()
+					&& $constructor instanceof PhpMethodReflection
+					&& !$constructor->isFinal()->yes()
+					&& !$constructor->getPrototype()->isAbstract()
+				) {
+					return [];
+				}
+			}
+		} elseif ($lowercasedClass === 'self') {
+			if (!$scope->isInClass()) {
+				return [
+					RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $class))
+						->identifier('outOfClass.self')
+						->build(),
+				];
+			}
+			$classReflection = $scope->getClassReflection();
+		} elseif ($lowercasedClass === 'parent') {
+			if (!$scope->isInClass()) {
+				return [
+					RuleErrorBuilder::message(sprintf('Using %s outside of class scope.', $class))
+						->identifier('outOfClass.parent')
+						->build(),
+				];
+			}
+			if ($scope->getClassReflection()->getParentClass() === null) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'%s::%s() calls new parent but %s does not extend any class.',
+						$scope->getClassReflection()->getDisplayName(),
+						$scope->getFunctionName(),
+						$scope->getClassReflection()->getDisplayName(),
+					))->identifier('class.noParent')->build(),
+				];
+			}
+			$classReflection = $scope->getClassReflection()->getParentClass();
+		} else {
+			if (!$this->reflectionProvider->hasClass($class)) {
+				if ($scope->isInClassExists($class)) {
+					return [];
+				}
+
+				return [
+					RuleErrorBuilder::message(sprintf('Instantiated class %s not found.', $class))
+						->identifier('class.notFound')
+						->discoveringSymbolsTip()
+						->build(),
+				];
+			}
+
+			$messages = $this->classCheck->checkClassNames([
+				new ClassNameNodePair($class, $node->class),
+			]);
+
+			$classReflection = $this->reflectionProvider->getClass($class);
+		}
+
+		if ($classReflection->isEnum() && $isName) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Cannot instantiate enum %s.', $classReflection->getDisplayName()),
+				)->identifier('new.enum')->build(),
+			];
+		}
+
+		if (!$isStatic && $classReflection->isInterface() && $isName) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Cannot instantiate interface %s.', $classReflection->getDisplayName()),
+				)->identifier('new.interface')->build(),
+			];
+		}
+
+		if (!$isStatic && $classReflection->isAbstract() && $isName) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Instantiated class %s is abstract.', $classReflection->getDisplayName()),
+				)->identifier('new.abstract')->build(),
+			];
+		}
+
+		if (!$isName) {
+			return [];
+		}
+
+		if (!$classReflection->hasConstructor()) {
+			if (count($node->getArgs()) > 0) {
+				return array_merge($messages, [
+					RuleErrorBuilder::message(sprintf(
+						'Class %s does not have a constructor and must be instantiated without any parameters.',
+						$classReflection->getDisplayName(),
+					))->identifier('new.noConstructor')->build(),
+				]);
+			}
+
+			return $messages;
+		}
+
+		$constructorReflection = $classReflection->getConstructor();
+		if (!$scope->canCallMethod($constructorReflection)) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Cannot instantiate class %s via %s constructor %s::%s().',
+				$classReflection->getDisplayName(),
+				$constructorReflection->isPrivate() ? 'private' : 'protected',
+				$constructorReflection->getDeclaringClass()->getDisplayName(),
+				$constructorReflection->getName(),
+			))
+				->identifier(sprintf('new.%sConstructor', $constructorReflection->isPrivate() ? 'private' : 'protected'))
+				->build();
+		}
+
+		$classDisplayName = SprintfHelper::escapeFormatString($classReflection->getDisplayName());
+
+		return array_merge($messages, $this->check->check(
+			ParametersAcceptorSelector::selectFromArgs(
+				$scope,
+				$node->getArgs(),
+				$constructorReflection->getVariants(),
+				$constructorReflection->getNamedArgumentsVariants(),
+			),
+			$scope,
+			$constructorReflection->getDeclaringClass()->isBuiltin(),
+			$node,
+			'new',
+			$constructorReflection->acceptsNamedArguments(),
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameter, %d required.',
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameters, %d required.',
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameter, at least %d required.',
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameters, at least %d required.',
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameter, %d-%d required.',
+			'Class ' . $classDisplayName . ' constructor invoked with %d parameters, %d-%d required.',
+			'%s of class ' . $classDisplayName . ' constructor expects %s, %s given.',
+			'', // constructor does not have a return type
+			' %s of class ' . $classDisplayName . ' constructor is passed by reference, so it expects variables only',
+			'Unable to resolve the template type %s in instantiation of class ' . $classDisplayName,
+			'Missing parameter $%s in call to ' . $classDisplayName . ' constructor.',
+			'Unknown parameter $%s in call to ' . $classDisplayName . ' constructor.',
+			'Return type of call to ' . $classDisplayName . ' constructor contains unresolvable type.',
+			'%s of class ' . $classDisplayName . ' constructor contains unresolvable type.',
+			'Class ' . $classDisplayName . ' constructor invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+		));
+	}
+
+	/**
+	 * @param Node\Expr\New_ $node
+	 * @return array<int, array{string, bool}>
+	 */
+	private function getClassNames(Node $node, Scope $scope): array
+	{
+		if ($node->class instanceof Node\Name) {
+			return [[(string) $node->class, true]];
+		}
+
+		if ($node->class instanceof Node\Stmt\Class_) {
+			$classNames = $scope->getType($node)->getObjectClassNames();
+			if ($classNames === []) {
+				throw new ShouldNotHappenException();
+			}
+
+			return array_map(
+				static fn (string $className) => [$className, true],
+				$classNames,
+			);
+		}
+
+		$type = $scope->getType($node->class);
+
+		if ($type->isClassString()->yes()) {
+			$concretes = array_filter(
+				$type->getClassStringObjectType()->getObjectClassReflections(),
+				static fn (ClassReflection $classReflection): bool => !$classReflection->isAbstract() && !$classReflection->isInterface(),
+			);
+
+			if (count($concretes) > 0) {
+				return array_map(
+					static fn (ClassReflection $classReflection): array => [$classReflection->getName(), true],
+					$concretes,
+				);
+			}
+		}
+
+		return array_merge(
+			array_map(
+				static fn (ConstantStringType $type): array => [$type->getValue(), true],
+				$type->getConstantStrings(),
+			),
+			array_map(
+				static fn (string $name): array => [$name, false],
+				$type->getObjectClassNames(),
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/InvalidPromotedPropertiesRule.php b/src/Rules/Classes/InvalidPromotedPropertiesRule.php
new file mode 100644
index 00000000..56939a31
--- /dev/null
+++ b/src/Rules/Classes/InvalidPromotedPropertiesRule.php
@@ -0,0 +1,104 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\FunctionLike>
+ */
+final class InvalidPromotedPropertiesRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\FunctionLike::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$hasPromotedProperties = false;
+
+		foreach ($node->getParams() as $param) {
+			if ($param->flags !== 0) {
+				$hasPromotedProperties = true;
+				break;
+			}
+
+			if ($param->hooks === []) {
+				continue;
+			}
+
+			$hasPromotedProperties = true;
+			break;
+		}
+
+		if (!$hasPromotedProperties) {
+			return [];
+		}
+
+		if (!$this->phpVersion->supportsPromotedProperties()) {
+			return [
+				RuleErrorBuilder::message(
+					'Promoted properties are supported only on PHP 8.0 and later.',
+				)->identifier('property.promotedNotSupported')->nonIgnorable()->build(),
+			];
+		}
+
+		if (
+			!$node instanceof Node\Stmt\ClassMethod
+			|| (
+				$node->name->toLowerString() !== '__construct'
+				&& $node->getAttribute('originalTraitMethodName') !== '__construct')
+		) {
+			return [
+				RuleErrorBuilder::message(
+					'Promoted properties can be in constructor only.',
+				)->identifier('property.invalidPromoted')->nonIgnorable()->build(),
+			];
+		}
+
+		if ($node->getStmts() === null) {
+			return [
+				RuleErrorBuilder::message(
+					'Promoted properties are not allowed in abstract constructors.',
+				)->identifier('property.invalidPromoted')->nonIgnorable()->build(),
+			];
+		}
+
+		$errors = [];
+		foreach ($node->getParams() as $param) {
+			if ($param->flags === 0) {
+				continue;
+			}
+
+			if (!$param->var instanceof Node\Expr\Variable || !is_string($param->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (!$param->variadic) {
+				continue;
+			}
+
+			$propertyName = $param->var->name;
+			$errors[] = RuleErrorBuilder::message(
+				sprintf('Promoted property parameter $%s can not be variadic.', $propertyName),
+			)->identifier('property.invalidPromoted')->nonIgnorable()->line($param->getStartLine())->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/LocalTypeAliasesCheck.php b/src/Rules/Classes/LocalTypeAliasesCheck.php
new file mode 100644
index 00000000..8ab34c54
--- /dev/null
+++ b/src/Rules/Classes/LocalTypeAliasesCheck.php
@@ -0,0 +1,360 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Analyser\NameScope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\PhpDoc\TypeNodeResolver;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\CircularTypeAliasErrorType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function array_key_exists;
+use function array_merge;
+use function in_array;
+use function sprintf;
+
+final class LocalTypeAliasesCheck
+{
+
+	/**
+	 * @param array<string, string> $globalTypeAliases
+	 */
+	public function __construct(
+		private array $globalTypeAliases,
+		private ReflectionProvider $reflectionProvider,
+		private TypeNodeResolver $typeNodeResolver,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private ClassNameCheck $classCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private bool $checkMissingTypehints,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(ClassReflection $reflection, ClassLike $node): array
+	{
+		$errors = [];
+		foreach ($this->checkInTraitDefinitionContext($reflection) as $error) {
+			$errors[] = $error;
+		}
+		foreach ($this->checkInTraitUseContext($reflection, $reflection, $node) as $error) {
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitDefinitionContext(ClassReflection $reflection): array
+	{
+		$phpDoc = $reflection->getResolvedPhpDoc();
+		if ($phpDoc === null) {
+			return [];
+		}
+
+		$nameScope = $phpDoc->getNullableNameScope();
+		$resolveName = static function (string $name) use ($nameScope): string {
+			if ($nameScope === null) {
+				return $name;
+			}
+
+			return $nameScope->resolveStringName($name);
+		};
+
+		$errors = [];
+		$className = $reflection->getDisplayName();
+
+		$importedAliases = [];
+
+		foreach ($phpDoc->getTypeAliasImportTags() as $typeAliasImportTag) {
+			$aliasName = $typeAliasImportTag->getImportedAs() ?? $typeAliasImportTag->getImportedAlias();
+			$importedAlias = $typeAliasImportTag->getImportedAlias();
+			$importedFromClassName = $typeAliasImportTag->getImportedFrom();
+
+			if (!$this->reflectionProvider->hasClass($importedFromClassName)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Cannot import type alias %s: class %s does not exist.', $importedAlias, $importedFromClassName))
+					->identifier('class.notFound')
+					->build();
+				continue;
+			}
+
+			$importedFromReflection = $this->reflectionProvider->getClass($importedFromClassName);
+			$typeAliases = $importedFromReflection->getTypeAliases();
+
+			if (!array_key_exists($importedAlias, $typeAliases)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Cannot import type alias %s: type alias does not exist in %s.', $importedAlias, $importedFromClassName))
+					->identifier('typeAlias.notFound')
+					->build();
+				continue;
+			}
+
+			$resolvedName = $resolveName($aliasName);
+			if ($this->reflectionProvider->hasClass($resolveName($aliasName))) {
+				$classReflection = $this->reflectionProvider->getClass($resolvedName);
+				$classLikeDescription = 'a class';
+				if ($classReflection->isInterface()) {
+					$classLikeDescription = 'an interface';
+				} elseif ($classReflection->isTrait()) {
+					$classLikeDescription = 'a trait';
+				} elseif ($classReflection->isEnum()) {
+					$classLikeDescription = 'an enum';
+				}
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s already exists as %s in scope of %s.', $aliasName, $classLikeDescription, $className))
+					->identifier('typeAlias.duplicate')
+					->build();
+				continue;
+			}
+
+			if (array_key_exists($aliasName, $this->globalTypeAliases)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s already exists as a global type alias.', $aliasName))->identifier('typeAlias.duplicate')->build();
+				continue;
+			}
+
+			$importedAs = $typeAliasImportTag->getImportedAs();
+			if ($importedAs !== null && !$this->isAliasNameValid($importedAs, $nameScope)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Imported type alias %s has an invalid name: %s.', $importedAlias, $importedAs))->identifier('typeAlias.invalidName')->build();
+				continue;
+			}
+
+			$importedAliases[] = $aliasName;
+		}
+
+		foreach ($phpDoc->getTypeAliasTags() as $typeAliasTag) {
+			$aliasName = $typeAliasTag->getAliasName();
+
+			if (in_array($aliasName, $importedAliases, true)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s overwrites an imported type alias of the same name.', $aliasName))->identifier('typeAlias.duplicate')->build();
+				continue;
+			}
+
+			$resolvedName = $resolveName($aliasName);
+			if ($this->reflectionProvider->hasClass($resolvedName)) {
+				$classReflection = $this->reflectionProvider->getClass($resolvedName);
+				$classLikeDescription = 'a class';
+				if ($classReflection->isInterface()) {
+					$classLikeDescription = 'an interface';
+				} elseif ($classReflection->isTrait()) {
+					$classLikeDescription = 'a trait';
+				} elseif ($classReflection->isEnum()) {
+					$classLikeDescription = 'an enum';
+				}
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s already exists as %s in scope of %s.', $aliasName, $classLikeDescription, $className))->identifier('typeAlias.duplicate')->build();
+				continue;
+			}
+
+			if (array_key_exists($aliasName, $this->globalTypeAliases)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s already exists as a global type alias.', $aliasName))->identifier('typeAlias.duplicate')->build();
+				continue;
+			}
+
+			if (!$this->isAliasNameValid($aliasName, $nameScope)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias has an invalid name: %s.', $aliasName))
+					->identifier('typeAlias.invalidName')
+					->build();
+				continue;
+			}
+
+			$resolvedType = $typeAliasTag->getTypeAlias()->resolve($this->typeNodeResolver);
+			if ($this->hasErrorType($resolvedType, $aliasName, $errors)) {
+				continue;
+			}
+
+			if (!$this->checkMissingTypehints) {
+				continue;
+			}
+
+			foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($resolvedType) as $iterableType) {
+				$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s has type alias %s with no value type specified in iterable type %s.',
+					$reflection->getClassTypeDescription(),
+					$reflection->getDisplayName(),
+					$aliasName,
+					$iterableTypeDescription,
+				))
+					->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+					->identifier('missingType.iterableValue')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($resolvedType) as [$name, $genericTypeNames]) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s has type alias %s with generic %s but does not specify its types: %s',
+					$reflection->getClassTypeDescription(),
+					$reflection->getDisplayName(),
+					$aliasName,
+					$name,
+					$genericTypeNames,
+				))
+					->identifier('missingType.generics')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($resolvedType) as $callableType) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s has type alias %s with no signature specified for %s.',
+					$reflection->getClassTypeDescription(),
+					$reflection->getDisplayName(),
+					$aliasName,
+					$callableType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('missingType.callable')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitUseContext(
+		ClassReflection $reflection,
+		ClassReflection $implementingClassReflection,
+		ClassLike $node,
+	): array
+	{
+		if ($reflection->getNativeReflection()->getName() === $implementingClassReflection->getName()) {
+			$phpDoc = $reflection->getResolvedPhpDoc();
+		} else {
+			$phpDoc = $reflection->getTraitContextResolvedPhpDoc($implementingClassReflection);
+		}
+		if ($phpDoc === null) {
+			return [];
+		}
+
+		$errors = [];
+
+		foreach ($phpDoc->getTypeAliasTags() as $typeAliasTag) {
+			$aliasName = $typeAliasTag->getAliasName();
+			$resolvedType = $typeAliasTag->getTypeAlias()->resolve($this->typeNodeResolver);
+			$throwawayErrors = [];
+			if ($this->hasErrorType($resolvedType, $aliasName, $throwawayErrors)) {
+				continue;
+			}
+			foreach ($resolvedType->getReferencedClasses() as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s contains unknown class %s.', $aliasName, $class))
+						->identifier('class.notFound')
+						->discoveringSymbolsTip()
+						->build();
+				} elseif ($this->reflectionProvider->getClass($class)->isTrait()) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s contains invalid type %s.', $aliasName, $class))
+						->identifier('typeAlias.trait')
+						->build();
+				} else {
+					$errors = array_merge(
+						$errors,
+						$this->classCheck->checkClassNames([
+							new ClassNameNodePair($class, $node),
+						], $this->checkClassCaseSensitivity),
+					);
+				}
+			}
+
+			if ($this->unresolvableTypeHelper->containsUnresolvableType($resolvedType)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Type alias %s contains unresolvable type.', $aliasName))
+					->identifier('typeAlias.unresolvableType')
+					->build();
+			}
+
+			$escapedTypeAlias = SprintfHelper::escapeFormatString($aliasName);
+			$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+				$resolvedType,
+				sprintf(
+					'Type alias %s contains generic type %%s but %%s %%s is not generic.',
+					$escapedTypeAlias,
+				),
+				sprintf(
+					'Generic type %%s in type alias %s does not specify all template types of %%s %%s: %%s',
+					$escapedTypeAlias,
+				),
+				sprintf(
+					'Generic type %%s in type alias %s specifies %%d template types, but %%s %%s supports only %%d: %%s',
+					$escapedTypeAlias,
+				),
+				sprintf(
+					'Type %%s in generic type %%s in type alias %s is not subtype of template type %%s of %%s %%s.',
+					$escapedTypeAlias,
+				),
+				sprintf(
+					'Call-site variance of %%s in generic type %%s in type alias %s is in conflict with %%s template type %%s of %%s %%s.',
+					$escapedTypeAlias,
+				),
+				sprintf(
+					'Call-site variance of %%s in generic type %%s in type alias %s is redundant, template type %%s of %%s %%s has the same variance.',
+					$escapedTypeAlias,
+				),
+			));
+		}
+
+		return $errors;
+	}
+
+	private function isAliasNameValid(string $aliasName, ?NameScope $nameScope): bool
+	{
+		if ($nameScope === null) {
+			return true;
+		}
+
+		$aliasNameResolvedType = $this->typeNodeResolver->resolve(new IdentifierTypeNode($aliasName), $nameScope->bypassTypeAliases());
+		return ($aliasNameResolvedType->isObject()->yes() && !in_array($aliasName, ['self', 'parent'], true))
+			|| $aliasNameResolvedType instanceof TemplateType; // aliases take precedence over type parameters, this is reported by other rules using TemplateTypeCheck
+	}
+
+	/**
+	 * @param list<IdentifierRuleError> $errors
+	 * @param-out list<IdentifierRuleError> $errors
+	 */
+	private function hasErrorType(Type $type, string $aliasName, array &$errors): bool
+	{
+		$foundError = false;
+		TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$errors, &$foundError, $aliasName): Type {
+			if ($foundError) {
+				return $type;
+			}
+
+			if ($type instanceof CircularTypeAliasErrorType) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Circular definition detected in type alias %s.', $aliasName))
+					->identifier('typeAlias.circular')
+					->build();
+				$foundError = true;
+				return $type;
+			}
+
+			if ($type instanceof ErrorType) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Invalid type definition detected in type alias %s.', $aliasName))
+					->identifier('typeAlias.invalidType')
+					->build();
+				$foundError = true;
+				return $type;
+			}
+
+			return $traverse($type);
+		});
+
+		return $foundError;
+	}
+
+}
diff --git a/src/Rules/Classes/LocalTypeAliasesRule.php b/src/Rules/Classes/LocalTypeAliasesRule.php
new file mode 100644
index 00000000..71b5a505
--- /dev/null
+++ b/src/Rules/Classes/LocalTypeAliasesRule.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class LocalTypeAliasesRule implements Rule
+{
+
+	public function __construct(private LocalTypeAliasesCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->check($node->getClassReflection(), $node->getOriginalNode());
+	}
+
+}
diff --git a/src/Rules/Classes/LocalTypeTraitAliasesRule.php b/src/Rules/Classes/LocalTypeTraitAliasesRule.php
new file mode 100644
index 00000000..2e910b35
--- /dev/null
+++ b/src/Rules/Classes/LocalTypeTraitAliasesRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class LocalTypeTraitAliasesRule implements Rule
+{
+
+	public function __construct(private LocalTypeAliasesCheck $check, private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$traitName = $node->namespacedName;
+		if ($traitName === null) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasClass($traitName->toString())) {
+			return [];
+		}
+
+		return $this->check->checkInTraitDefinitionContext($this->reflectionProvider->getClass($traitName->toString()));
+	}
+
+}
diff --git a/src/Rules/Classes/LocalTypeTraitUseAliasesRule.php b/src/Rules/Classes/LocalTypeTraitUseAliasesRule.php
new file mode 100644
index 00000000..1bc1020f
--- /dev/null
+++ b/src/Rules/Classes/LocalTypeTraitUseAliasesRule.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InTraitNode>
+ */
+final class LocalTypeTraitUseAliasesRule implements Rule
+{
+
+	public function __construct(private LocalTypeAliasesCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InTraitNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->checkInTraitUseContext(
+			$node->getTraitReflection(),
+			$node->getImplementingClassReflection(),
+			$node->getOriginalNode(),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/MethodTagCheck.php b/src/Rules/Classes/MethodTagCheck.php
new file mode 100644
index 00000000..ba2201a5
--- /dev/null
+++ b/src/Rules/Classes/MethodTagCheck.php
@@ -0,0 +1,265 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+final class MethodTagCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		ClassReflection $classReflection,
+		ClassLike $node,
+	): array
+	{
+		$errors = [];
+		foreach ($classReflection->getMethodTags() as $methodName => $methodTag) {
+			$i = 0;
+			foreach ($methodTag->getParameters() as $parameterName => $parameterTag) {
+				$i++;
+				$parameterDescription = sprintf('parameter #%d $%s', $i, $parameterName);
+				foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $parameterDescription, $parameterTag->getType()) as $error) {
+					$errors[] = $error;
+				}
+				foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $parameterDescription, $parameterTag->getType(), $node) as $error) {
+					$errors[] = $error;
+				}
+
+				if ($parameterTag->getDefaultValue() === null) {
+					continue;
+				}
+
+				$defaultValueDescription = sprintf('%s default value', $parameterDescription);
+				foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $defaultValueDescription, $parameterTag->getDefaultValue()) as $error) {
+					$errors[] = $error;
+				}
+				foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $defaultValueDescription, $parameterTag->getDefaultValue(), $node) as $error) {
+					$errors[] = $error;
+				}
+			}
+
+			$returnTypeDescription = 'return type';
+			foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $returnTypeDescription, $methodTag->getReturnType()) as $error) {
+				$errors[] = $error;
+			}
+			foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $returnTypeDescription, $methodTag->getReturnType(), $node) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitDefinitionContext(ClassReflection $classReflection): array
+	{
+		$errors = [];
+		foreach ($classReflection->getMethodTags() as $methodName => $methodTag) {
+			$i = 0;
+			foreach ($methodTag->getParameters() as $parameterName => $parameterTag) {
+				$i++;
+				$parameterDescription = sprintf('parameter #%d $%s', $i, $parameterName);
+				foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $parameterDescription, $parameterTag->getType()) as $error) {
+					$errors[] = $error;
+				}
+
+				if ($parameterTag->getDefaultValue() === null) {
+					continue;
+				}
+
+				$defaultValueDescription = sprintf('%s default value', $parameterDescription);
+				foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $defaultValueDescription, $parameterTag->getDefaultValue()) as $error) {
+					$errors[] = $error;
+				}
+			}
+
+			$returnTypeDescription = 'return type';
+			foreach ($this->checkMethodTypeInTraitDefinitionContext($classReflection, $methodName, $returnTypeDescription, $methodTag->getReturnType()) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitUseContext(
+		ClassReflection $classReflection,
+		ClassReflection $implementingClass,
+		ClassLike $node,
+	): array
+	{
+		$phpDoc = $classReflection->getTraitContextResolvedPhpDoc($implementingClass);
+		if ($phpDoc === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($phpDoc->getMethodTags() as $methodName => $methodTag) {
+			$i = 0;
+			foreach ($methodTag->getParameters() as $parameterName => $parameterTag) {
+				$i++;
+				$parameterDescription = sprintf('parameter #%d $%s', $i, $parameterName);
+				foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $parameterDescription, $parameterTag->getType(), $node) as $error) {
+					$errors[] = $error;
+				}
+
+				if ($parameterTag->getDefaultValue() === null) {
+					continue;
+				}
+
+				$defaultValueDescription = sprintf('%s default value', $parameterDescription);
+				foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $defaultValueDescription, $parameterTag->getDefaultValue(), $node) as $error) {
+					$errors[] = $error;
+				}
+			}
+
+			$returnTypeDescription = 'return type';
+			foreach ($this->checkMethodTypeInTraitUseContext($classReflection, $methodName, $returnTypeDescription, $methodTag->getReturnType(), $node) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkMethodTypeInTraitDefinitionContext(ClassReflection $classReflection, string $methodName, string $description, Type $type): array
+	{
+		if (!$this->checkMissingTypehints) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($type) as [$innerName, $genericTypeNames]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @method for method %s::%s() %s contains generic %s but does not specify its types: %s',
+				$classReflection->getDisplayName(),
+				$methodName,
+				$description,
+				$innerName,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($type) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s %s has PHPDoc tag @method for method %s() %s with no value type specified in iterable type %s.',
+				$classReflection->getClassTypeDescription(),
+				$classReflection->getDisplayName(),
+				$methodName,
+				$description,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($type) as $callableType) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s %s has PHPDoc tag @method for method %s() %s with no signature specified for %s.',
+				$classReflection->getClassTypeDescription(),
+				$classReflection->getDisplayName(),
+				$methodName,
+				$description,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkMethodTypeInTraitUseContext(ClassReflection $classReflection, string $methodName, string $description, Type $type, ClassLike $node): array
+	{
+		$errors = [];
+		foreach ($type->getReferencedClasses() as $class) {
+			if (!$this->reflectionProvider->hasClass($class)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @method for method %s::%s() %s contains unknown class %s.', $classReflection->getDisplayName(), $methodName, $description, $class))
+					->identifier('class.notFound')
+					->discoveringSymbolsTip()
+					->build();
+			} elseif ($this->reflectionProvider->getClass($class)->isTrait()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @method for method %s::%s() %s contains invalid type %s.', $classReflection->getDisplayName(), $methodName, $description, $class))
+					->identifier('methodTag.trait')
+					->build();
+			} else {
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $node),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+		}
+
+		if ($this->unresolvableTypeHelper->containsUnresolvableType($type)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @method for method %s::%s() %s contains unresolvable type.',
+				$classReflection->getDisplayName(),
+				$methodName,
+				$description,
+			))->identifier('methodTag.unresolvableType')->build();
+		}
+
+		$escapedClassName = SprintfHelper::escapeFormatString($classReflection->getDisplayName());
+		$escapedMethodName = SprintfHelper::escapeFormatString($methodName);
+		$escapedDescription = SprintfHelper::escapeFormatString($description);
+
+		return array_merge(
+			$errors,
+			$this->genericObjectTypeCheck->check(
+				$type,
+				sprintf('PHPDoc tag @method for method %s::%s() %s contains generic type %%s but %%s %%s is not generic.', $escapedClassName, $escapedMethodName, $escapedDescription),
+				sprintf('Generic type %%s in PHPDoc tag @method for method %s::%s() %s does not specify all template types of %%s %%s: %%s', $escapedClassName, $escapedMethodName, $escapedDescription),
+				sprintf('Generic type %%s in PHPDoc tag @method for method %s::%s() %s specifies %%d template types, but %%s %%s supports only %%d: %%s', $escapedClassName, $escapedMethodName, $escapedDescription),
+				sprintf('Type %%s in generic type %%s in PHPDoc tag @method for method %s::%s() %s is not subtype of template type %%s of %%s %%s.', $escapedClassName, $escapedMethodName, $escapedDescription),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @method for method %s::%s() %s is in conflict with %%s template type %%s of %%s %%s.', $escapedClassName, $escapedMethodName, $escapedDescription),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @method for method %s::%s() %s is redundant, template type %%s of %%s %%s has the same variance.', $escapedClassName, $escapedMethodName, $escapedDescription),
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/MethodTagRule.php b/src/Rules/Classes/MethodTagRule.php
new file mode 100644
index 00000000..16df54f9
--- /dev/null
+++ b/src/Rules/Classes/MethodTagRule.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class MethodTagRule implements Rule
+{
+
+	public function __construct(private MethodTagCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->check(
+			$node->getClassReflection(),
+			$node->getOriginalNode(),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/MethodTagTraitRule.php b/src/Rules/Classes/MethodTagTraitRule.php
new file mode 100644
index 00000000..0a6e785f
--- /dev/null
+++ b/src/Rules/Classes/MethodTagTraitRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class MethodTagTraitRule implements Rule
+{
+
+	public function __construct(private MethodTagCheck $check, private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$traitName = $node->namespacedName;
+		if ($traitName === null) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasClass($traitName->toString())) {
+			return [];
+		}
+
+		return $this->check->checkInTraitDefinitionContext($this->reflectionProvider->getClass($traitName->toString()));
+	}
+
+}
diff --git a/src/Rules/Classes/MethodTagTraitUseRule.php b/src/Rules/Classes/MethodTagTraitUseRule.php
new file mode 100644
index 00000000..2cb6ffc4
--- /dev/null
+++ b/src/Rules/Classes/MethodTagTraitUseRule.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InTraitNode>
+ */
+final class MethodTagTraitUseRule implements Rule
+{
+
+	public function __construct(private MethodTagCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InTraitNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->checkInTraitUseContext(
+			$node->getTraitReflection(),
+			$node->getImplementingClassReflection(),
+			$node->getOriginalNode(),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/MixinCheck.php b/src/Rules/Classes/MixinCheck.php
new file mode 100644
index 00000000..add78d24
--- /dev/null
+++ b/src/Rules/Classes/MixinCheck.php
@@ -0,0 +1,171 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+final class MixinCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(ClassReflection $classReflection, ClassLike $node): array
+	{
+		$errors = [];
+		foreach ($this->checkInTraitDefinitionContext($classReflection) as $error) {
+			$errors[] = $error;
+		}
+
+		foreach ($this->checkInTraitUseContext($classReflection, $classReflection, $node) as $error) {
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitDefinitionContext(ClassReflection $classReflection): array
+	{
+		$errors = [];
+		foreach ($classReflection->getMixinTags() as $mixinTag) {
+			$type = $mixinTag->getType();
+			if (!$type->canCallMethods()->yes() || !$type->canAccessProperties()->yes()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @mixin contains non-object type %s.', $type->describe(VerbosityLevel::typeOnly())))
+					->identifier('mixin.nonObject')
+					->build();
+				continue;
+			}
+
+			if (!$this->checkMissingTypehints) {
+				continue;
+			}
+
+			foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($type) as $iterableType) {
+				$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s has PHPDoc tag @mixin with no value type specified in iterable type %s.',
+					$classReflection->getClassTypeDescription(),
+					$classReflection->getDisplayName(),
+					$iterableTypeDescription,
+				))
+					->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+					->identifier('missingType.iterableValue')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($type) as [$innerName, $genericTypeNames]) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @mixin contains generic %s but does not specify its types: %s',
+					$innerName,
+					$genericTypeNames,
+				))
+					->identifier('missingType.generics')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($type) as $callableType) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s has PHPDoc tag @mixin with no signature specified for %s.',
+					$classReflection->getClassTypeDescription(),
+					$classReflection->getDisplayName(),
+					$callableType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('missingType.callable')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitUseContext(
+		ClassReflection $reflection,
+		ClassReflection $implementingClassReflection,
+		ClassLike $node,
+	): array
+	{
+		if ($reflection->getNativeReflection()->getName() === $implementingClassReflection->getName()) {
+			$phpDoc = $reflection->getResolvedPhpDoc();
+		} else {
+			$phpDoc = $reflection->getTraitContextResolvedPhpDoc($implementingClassReflection);
+		}
+		if ($phpDoc === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($phpDoc->getMixinTags() as $mixinTag) {
+			$type = $mixinTag->getType();
+			if (
+				$this->unresolvableTypeHelper->containsUnresolvableType($type)
+			) {
+				$errors[] = RuleErrorBuilder::message('PHPDoc tag @mixin contains unresolvable type.')
+					->identifier('mixin.unresolvableType')
+					->build();
+				continue;
+			}
+
+			$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+				$type,
+				'PHPDoc tag @mixin contains generic type %s but %s %s is not generic.',
+				'Generic type %s in PHPDoc tag @mixin does not specify all template types of %s %s: %s',
+				'Generic type %s in PHPDoc tag @mixin specifies %d template types, but %s %s supports only %d: %s',
+				'Type %s in generic type %s in PHPDoc tag @mixin is not subtype of template type %s of %s %s.',
+				'Call-site variance of %s in generic type %s in PHPDoc tag @mixin is in conflict with %s template type %s of %s %s.',
+				'Call-site variance of %s in generic type %s in PHPDoc tag @mixin is redundant, template type %s of %s %s has the same variance.',
+			));
+
+			foreach ($type->getReferencedClasses() as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @mixin contains unknown class %s.', $class))
+						->identifier('class.notFound')
+						->discoveringSymbolsTip()
+						->build();
+				} elseif ($this->reflectionProvider->getClass($class)->isTrait()) {
+					$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @mixin contains invalid type %s.', $class))
+						->identifier('mixin.trait')
+						->build();
+				} else {
+					$errors = array_merge(
+						$errors,
+						$this->classCheck->checkClassNames([
+							new ClassNameNodePair($class, $node),
+						], $this->checkClassCaseSensitivity),
+					);
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/MixinRule.php b/src/Rules/Classes/MixinRule.php
new file mode 100644
index 00000000..9d86fc06
--- /dev/null
+++ b/src/Rules/Classes/MixinRule.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class MixinRule implements Rule
+{
+
+	public function __construct(private MixinCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->check($node->getClassReflection(), $node->getOriginalNode());
+	}
+
+}
diff --git a/src/Rules/Classes/MixinTraitRule.php b/src/Rules/Classes/MixinTraitRule.php
new file mode 100644
index 00000000..98b77362
--- /dev/null
+++ b/src/Rules/Classes/MixinTraitRule.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class MixinTraitRule implements Rule
+{
+
+	public function __construct(private MixinCheck $check, private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$traitName = $node->namespacedName;
+		if ($traitName === null) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasClass($traitName->toString())) {
+			return [];
+		}
+
+		return $this->check->checkInTraitDefinitionContext(
+			$this->reflectionProvider->getClass($traitName->toString()),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/MixinTraitUseRule.php b/src/Rules/Classes/MixinTraitUseRule.php
new file mode 100644
index 00000000..26ba6d63
--- /dev/null
+++ b/src/Rules/Classes/MixinTraitUseRule.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InTraitNode>
+ */
+final class MixinTraitUseRule implements Rule
+{
+
+	public function __construct(private MixinCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InTraitNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->checkInTraitUseContext(
+			$node->getTraitReflection(),
+			$node->getImplementingClassReflection(),
+			$node->getOriginalNode(),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/NewStaticRule.php b/src/Rules/Classes/NewStaticRule.php
new file mode 100644
index 00000000..7c21ec0b
--- /dev/null
+++ b/src/Rules/Classes/NewStaticRule.php
@@ -0,0 +1,82 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\New_>
+ */
+final class NewStaticRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\New_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		if (strtolower($node->class->toString()) !== 'static') {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		if ($classReflection->isFinal()) {
+			return [];
+		}
+
+		$messages = [
+			RuleErrorBuilder::message('Unsafe usage of new static().')
+				->identifier('new.static')
+				->tip('See: https://phpstan.org/blog/solving-phpstan-error-unsafe-usage-of-new-static')
+				->build(),
+		];
+		if (!$classReflection->hasConstructor()) {
+			return $messages;
+		}
+
+		$constructor = $classReflection->getConstructor();
+		if ($constructor->getPrototype()->getDeclaringClass()->isInterface()) {
+			return [];
+		}
+
+		if ($constructor->getDeclaringClass()->hasConsistentConstructor()) {
+			return [];
+		}
+
+		foreach ($classReflection->getImmediateInterfaces() as $interface) {
+			if ($interface->hasConstructor()) {
+				return [];
+			}
+		}
+
+		if ($constructor instanceof PhpMethodReflection) {
+			if ($constructor->isFinal()->yes()) {
+				return [];
+			}
+
+			$prototype = $constructor->getPrototype();
+			if ($prototype->isAbstract()) {
+				return [];
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Classes/NonClassAttributeClassRule.php b/src/Rules/Classes/NonClassAttributeClassRule.php
new file mode 100644
index 00000000..67d28734
--- /dev/null
+++ b/src/Rules/Classes/NonClassAttributeClassRule.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class NonClassAttributeClassRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		foreach ($originalNode->attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				$name = $attr->name->toLowerString();
+				if ($name === 'attribute') {
+					return $this->check($scope);
+				}
+			}
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function check(Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+		$classReflection = $scope->getClassReflection();
+		if (!$classReflection->isClass()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'%s cannot be an Attribute class.',
+					$classReflection->getClassTypeDescription(),
+				))
+					->identifier(sprintf('attribute.%s', strtolower($classReflection->getClassTypeDescription())))
+					->build(),
+			];
+		}
+		if ($classReflection->isAbstract()) {
+			return [
+				RuleErrorBuilder::message(sprintf('Abstract class %s cannot be an Attribute class.', $classReflection->getDisplayName()))
+					->identifier('attribute.abstract')
+					->build(),
+			];
+		}
+
+		if (!$classReflection->hasConstructor()) {
+			return [];
+		}
+
+		if (!$classReflection->getConstructor()->isPublic()) {
+			return [
+				RuleErrorBuilder::message(sprintf('Attribute class %s constructor must be public.', $classReflection->getDisplayName()))
+					->identifier('attribute.constructorNotPublic')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Classes/PropertyTagCheck.php b/src/Rules/Classes/PropertyTagCheck.php
new file mode 100644
index 00000000..93438275
--- /dev/null
+++ b/src/Rules/Classes/PropertyTagCheck.php
@@ -0,0 +1,246 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\PhpDoc\Tag\PropertyTag;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+final class PropertyTagCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		ClassReflection $classReflection,
+		ClassLike $node,
+	): array
+	{
+		$errors = [];
+		foreach ($classReflection->getPropertyTags() as $propertyName => $propertyTag) {
+			[$types, $tagName] = $this->getTypesAndTagName($propertyTag);
+			foreach ($types as $type) {
+				foreach ($this->checkPropertyTypeInTraitDefinitionContext($classReflection, $propertyName, $tagName, $type) as $error) {
+					$errors[] = $error;
+				}
+				foreach ($this->checkPropertyTypeInTraitUseContext($classReflection, $propertyName, $tagName, $type, $node) as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitDefinitionContext(ClassReflection $classReflection): array
+	{
+		$errors = [];
+		foreach ($classReflection->getPropertyTags() as $propertyName => $propertyTag) {
+			[$types, $tagName] = $this->getTypesAndTagName($propertyTag);
+			foreach ($types as $type) {
+				foreach ($this->checkPropertyTypeInTraitDefinitionContext($classReflection, $propertyName, $tagName, $type) as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkInTraitUseContext(
+		ClassReflection $classReflection,
+		ClassReflection $implementingClass,
+		ClassLike $node,
+	): array
+	{
+		$phpDoc = $classReflection->getTraitContextResolvedPhpDoc($implementingClass);
+		if ($phpDoc === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($phpDoc->getPropertyTags() as $propertyName => $propertyTag) {
+			[$types, $tagName] = $this->getTypesAndTagName($propertyTag);
+			foreach ($types as $type) {
+				foreach ($this->checkPropertyTypeInTraitUseContext($classReflection, $propertyName, $tagName, $type, $node) as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return array{list<Type>, string}
+	 */
+	private function getTypesAndTagName(PropertyTag $propertyTag): array
+	{
+		$readableType = $propertyTag->getReadableType();
+		$writableType = $propertyTag->getWritableType();
+
+		$types = [];
+		$tagName = '@property';
+		if ($readableType !== null) {
+			if ($writableType !== null) {
+				if ($writableType->equals($readableType)) {
+					$types[] = $readableType;
+				} else {
+					$types[] = $readableType;
+					$types[] = $writableType;
+				}
+			} else {
+				$tagName = '@property-read';
+				$types[] = $readableType;
+			}
+		} elseif ($writableType !== null) {
+			$tagName = '@property-write';
+			$types[] = $writableType;
+		} else {
+			throw new ShouldNotHappenException();
+		}
+
+		return [$types, $tagName];
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkPropertyTypeInTraitDefinitionContext(ClassReflection $classReflection, string $propertyName, string $tagName, Type $type): array
+	{
+		if (!$this->checkMissingTypehints) {
+			return [];
+		}
+
+		$errors = [];
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($type) as [$innerName, $genericTypeNames]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag %s for property %s::$%s contains generic %s but does not specify its types: %s',
+				$tagName,
+				$classReflection->getDisplayName(),
+				$propertyName,
+				$innerName,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($type) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s %s has PHPDoc tag %s for property $%s with no value type specified in iterable type %s.',
+				$classReflection->getClassTypeDescription(),
+				$classReflection->getDisplayName(),
+				$tagName,
+				$propertyName,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($type) as $callableType) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s %s has PHPDoc tag %s for property $%s with no signature specified for %s.',
+				$classReflection->getClassTypeDescription(),
+				$classReflection->getDisplayName(),
+				$tagName,
+				$propertyName,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkPropertyTypeInTraitUseContext(ClassReflection $classReflection, string $propertyName, string $tagName, Type $type, ClassLike $node): array
+	{
+		$errors = [];
+		foreach ($type->getReferencedClasses() as $class) {
+			if (!$this->reflectionProvider->hasClass($class)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag %s for property %s::$%s contains unknown class %s.', $tagName, $classReflection->getDisplayName(), $propertyName, $class))
+					->identifier('class.notFound')
+					->discoveringSymbolsTip()
+					->build();
+			} elseif ($this->reflectionProvider->getClass($class)->isTrait()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag %s for property %s::$%s contains invalid type %s.', $tagName, $classReflection->getDisplayName(), $propertyName, $class))
+					->identifier('propertyTag.trait')
+					->build();
+			} else {
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $node),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+		}
+
+		if ($this->unresolvableTypeHelper->containsUnresolvableType($type)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag %s for property %s::$%s contains unresolvable type.',
+				$tagName,
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))->identifier('propertyTag.unresolvableType')->build();
+		}
+
+		$escapedClassName = SprintfHelper::escapeFormatString($classReflection->getDisplayName());
+		$escapedPropertyName = SprintfHelper::escapeFormatString($propertyName);
+		$escapedTagName = SprintfHelper::escapeFormatString($tagName);
+
+		return array_merge(
+			$errors,
+			$this->genericObjectTypeCheck->check(
+				$type,
+				sprintf('PHPDoc tag %s for property %s::$%s contains generic type %%s but %%s %%s is not generic.', $escapedTagName, $escapedClassName, $escapedPropertyName),
+				sprintf('Generic type %%s in PHPDoc tag %s for property %s::$%s does not specify all template types of %%s %%s: %%s', $escapedTagName, $escapedClassName, $escapedPropertyName),
+				sprintf('Generic type %%s in PHPDoc tag %s for property %s::$%s specifies %%d template types, but %%s %%s supports only %%d: %%s', $escapedTagName, $escapedClassName, $escapedPropertyName),
+				sprintf('Type %%s in generic type %%s in PHPDoc tag %s for property %s::$%s is not subtype of template type %%s of %%s %%s.', $escapedTagName, $escapedClassName, $escapedPropertyName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag %s for property %s::$%s is in conflict with %%s template type %%s of %%s %%s.', $escapedTagName, $escapedClassName, $escapedPropertyName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag %s for property %s::$%s is redundant, template type %%s of %%s %%s has the same variance.', $escapedTagName, $escapedClassName, $escapedPropertyName),
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/PropertyTagRule.php b/src/Rules/Classes/PropertyTagRule.php
new file mode 100644
index 00000000..446d24ac
--- /dev/null
+++ b/src/Rules/Classes/PropertyTagRule.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class PropertyTagRule implements Rule
+{
+
+	public function __construct(private PropertyTagCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->check($node->getClassReflection(), $node->getOriginalNode());
+	}
+
+}
diff --git a/src/Rules/Classes/PropertyTagTraitRule.php b/src/Rules/Classes/PropertyTagTraitRule.php
new file mode 100644
index 00000000..4118f752
--- /dev/null
+++ b/src/Rules/Classes/PropertyTagTraitRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class PropertyTagTraitRule implements Rule
+{
+
+	public function __construct(private PropertyTagCheck $check, private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$traitName = $node->namespacedName;
+		if ($traitName === null) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasClass($traitName->toString())) {
+			return [];
+		}
+
+		return $this->check->checkInTraitDefinitionContext($this->reflectionProvider->getClass($traitName->toString()));
+	}
+
+}
diff --git a/src/Rules/Classes/PropertyTagTraitUseRule.php b/src/Rules/Classes/PropertyTagTraitUseRule.php
new file mode 100644
index 00000000..aa79efc4
--- /dev/null
+++ b/src/Rules/Classes/PropertyTagTraitUseRule.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InTraitNode>
+ */
+final class PropertyTagTraitUseRule implements Rule
+{
+
+	public function __construct(private PropertyTagCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InTraitNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->checkInTraitUseContext(
+			$node->getTraitReflection(),
+			$node->getImplementingClassReflection(),
+			$node->getOriginalNode(),
+		);
+	}
+
+}
diff --git a/src/Rules/Classes/ReadOnlyClassRule.php b/src/Rules/Classes/ReadOnlyClassRule.php
new file mode 100644
index 00000000..41786933
--- /dev/null
+++ b/src/Rules/Classes/ReadOnlyClassRule.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class ReadOnlyClassRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$classReflection->isReadOnly()) {
+			return [];
+		}
+		if ($classReflection->isAnonymous()) {
+			if ($this->phpVersion->supportsReadOnlyAnonymousClasses()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message('Anonymous readonly classes are supported only on PHP 8.3 and later.')
+					->identifier('classConstant.nativeTypeNotSupported')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		if ($this->phpVersion->supportsReadOnlyClasses()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Readonly classes are supported only on PHP 8.2 and later.')
+				->identifier('classConstant.nativeTypeNotSupported')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Classes/RequireExtendsRule.php b/src/Rules/Classes/RequireExtendsRule.php
new file mode 100644
index 00000000..019f54b7
--- /dev/null
+++ b/src/Rules/Classes/RequireExtendsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class RequireExtendsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+
+		if ($classReflection->isInterface()) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($classReflection->getInterfaces() as $interface) {
+			$extendsTags = $interface->getRequireExtendsTags();
+			foreach ($extendsTags as $extendsTag) {
+				$type = $extendsTag->getType();
+				if (!$type instanceof ObjectType) {
+					continue;
+				}
+
+				if ($classReflection->is($type->getClassName())) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(
+					sprintf(
+						'Interface %s requires implementing class to extend %s, but %s does not.',
+						$interface->getDisplayName(),
+						$type->describe(VerbosityLevel::typeOnly()),
+						$classReflection->getDisplayName(),
+					),
+				)
+					->identifier('class.missingExtends')
+					->build();
+			}
+		}
+
+		foreach ($classReflection->getTraits(true) as $trait) {
+			$extendsTags = $trait->getRequireExtendsTags();
+			foreach ($extendsTags as $extendsTag) {
+				$type = $extendsTag->getType();
+				if (!$type instanceof ObjectType) {
+					continue;
+				}
+
+				if ($classReflection->is($type->getClassName())) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(
+					sprintf(
+						'Trait %s requires using class to extend %s, but %s does not.',
+						$trait->getDisplayName(),
+						$type->describe(VerbosityLevel::typeOnly()),
+						$classReflection->getDisplayName(),
+					),
+				)
+					->identifier('class.missingExtends')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/RequireImplementsRule.php b/src/Rules/Classes/RequireImplementsRule.php
new file mode 100644
index 00000000..caa1123a
--- /dev/null
+++ b/src/Rules/Classes/RequireImplementsRule.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class RequireImplementsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+
+		$errors = [];
+		foreach ($classReflection->getTraits(true) as $trait) {
+			$implementsTags = $trait->getRequireImplementsTags();
+			foreach ($implementsTags as $implementsTag) {
+				$type = $implementsTag->getType();
+				if (!$type instanceof ObjectType) {
+					continue;
+				}
+
+				if ($classReflection->implementsInterface($type->getClassName())) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(
+					sprintf(
+						'Trait %s requires using class to implement %s, but %s does not.',
+						$trait->getDisplayName(),
+						$type->describe(VerbosityLevel::typeOnly()),
+						$classReflection->getDisplayName(),
+					),
+				)
+					->identifier('class.missingImplements')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Classes/TraitAttributeClassRule.php b/src/Rules/Classes/TraitAttributeClassRule.php
new file mode 100644
index 00000000..45698b77
--- /dev/null
+++ b/src/Rules/Classes/TraitAttributeClassRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class TraitAttributeClassRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		foreach ($node->attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				$name = $attr->name->toLowerString();
+				if ($name === 'attribute') {
+					return [
+						RuleErrorBuilder::message('Trait cannot be an Attribute class.')
+							->identifier('attribute.trait')
+							->build(),
+					];
+				}
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Classes/UnusedConstructorParametersRule.php b/src/Rules/Classes/UnusedConstructorParametersRule.php
new file mode 100644
index 00000000..ab137b3a
--- /dev/null
+++ b/src/Rules/Classes/UnusedConstructorParametersRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Classes;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Param;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\UnusedFunctionParametersCheck;
+use PHPStan\ShouldNotHappenException;
+use function array_filter;
+use function array_map;
+use function array_values;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class UnusedConstructorParametersRule implements Rule
+{
+
+	public function __construct(private UnusedFunctionParametersCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$originalNode = $node->getOriginalNode();
+		if (strtolower($method->getName()) !== '__construct' || $originalNode->stmts === null) {
+			return [];
+		}
+
+		if (count($originalNode->params) === 0) {
+			return [];
+		}
+
+		$message = sprintf(
+			'Constructor of class %s has an unused parameter $%%s.',
+			SprintfHelper::escapeFormatString($node->getClassReflection()->getDisplayName()),
+		);
+		if ($node->getClassReflection()->isAnonymous()) {
+			$message = 'Constructor of an anonymous class has an unused parameter $%s.';
+		}
+
+		return $this->check->getUnusedParameters(
+			$scope,
+			array_map(static function (Param $parameter): Variable {
+				if (!$parameter->var instanceof Variable) {
+					throw new ShouldNotHappenException();
+				}
+				return $parameter->var;
+			}, array_values(array_filter($originalNode->params, static fn (Param $parameter): bool => $parameter->flags === 0))),
+			$originalNode->stmts,
+			$message,
+			'constructor.unusedParameter',
+		);
+	}
+
+}
diff --git a/src/Rules/Comparison/BooleanAndConstantConditionRule.php b/src/Rules/Comparison/BooleanAndConstantConditionRule.php
new file mode 100644
index 00000000..b6121576
--- /dev/null
+++ b/src/Rules/Comparison/BooleanAndConstantConditionRule.php
@@ -0,0 +1,160 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\BooleanAndNode;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<BooleanAndNode>
+ */
+final class BooleanAndConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return BooleanAndNode::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$errors = [];
+		$originalNode = $node->getOriginalNode();
+		$nodeText = $originalNode->getOperatorSigil();
+		$leftType = $this->helper->getBooleanType($scope, $originalNode->left);
+		$identifierType = $originalNode instanceof Node\Expr\BinaryOp\BooleanAnd ? 'booleanAnd' : 'logicalAnd';
+		if ($leftType instanceof ConstantBooleanType) {
+			$addTipLeft = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $originalNode): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $originalNode->left);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$leftType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipLeft(RuleErrorBuilder::message(sprintf(
+					'Left side of %s is always %s.',
+					$nodeText,
+					$leftType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('%s.leftAlways%s', $identifierType, $leftType->getValue() ? 'True' : 'False'))
+					->line($originalNode->left->getStartLine());
+				if ($leftType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$errors[] = $errorBuilder->build();
+			}
+		}
+
+		$rightScope = $node->getRightScope();
+		$rightType = $this->helper->getBooleanType(
+			$rightScope,
+			$originalNode->right,
+		);
+		if ($rightType instanceof ConstantBooleanType && !$scope->isInFirstLevelStatement()) {
+			$addTipRight = function (RuleErrorBuilder $ruleErrorBuilder) use ($rightScope, $originalNode): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType(
+					$rightScope,
+					$originalNode->right,
+				);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$rightType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipRight(RuleErrorBuilder::message(sprintf(
+					'Right side of %s is always %s.',
+					$nodeText,
+					$rightType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('%s.rightAlways%s', $identifierType, $rightType->getValue() ? 'True' : 'False'))
+					->line($originalNode->right->getStartLine());
+				if ($rightType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$errors[] = $errorBuilder->build();
+			}
+		}
+
+		if (count($errors) === 0 && !$scope->isInFirstLevelStatement()) {
+			$nodeType = $this->treatPhpDocTypesAsCertain ? $scope->getType($originalNode) : $scope->getNativeType($originalNode);
+			if ($nodeType instanceof ConstantBooleanType) {
+				$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $originalNode): RuleErrorBuilder {
+					if (!$this->treatPhpDocTypesAsCertain) {
+						return $ruleErrorBuilder;
+					}
+
+					$booleanNativeType = $scope->getNativeType($originalNode);
+					if ($booleanNativeType instanceof ConstantBooleanType) {
+						return $ruleErrorBuilder;
+					}
+					if (!$this->treatPhpDocTypesAsCertainTip) {
+						return $ruleErrorBuilder;
+					}
+
+					return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+				};
+
+				$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+				if (!$nodeType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+						'Result of %s is always %s.',
+						$nodeText,
+						$nodeType->getValue() ? 'true' : 'false',
+					)));
+					if ($nodeType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+						$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+					}
+
+					$errorBuilder->identifier(sprintf('%s.always%s', $identifierType, $nodeType->getValue() ? 'True' : 'False'));
+
+					$errors[] = $errorBuilder->build();
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Comparison/BooleanNotConstantConditionRule.php b/src/Rules/Comparison/BooleanNotConstantConditionRule.php
new file mode 100644
index 00000000..36cd5673
--- /dev/null
+++ b/src/Rules/Comparison/BooleanNotConstantConditionRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\BooleanNot>
+ */
+final class BooleanNotConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\BooleanNot::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->expr);
+		if ($exprType instanceof ConstantBooleanType) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->expr);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if ($exprType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+					'Negated boolean expression is always %s.',
+					$exprType->getValue() ? 'false' : 'true',
+				)))->line($node->expr->getStartLine());
+				if (!$exprType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+
+				$errorBuilder->identifier(sprintf('booleanNot.always%s', $exprType->getValue() ? 'False' : 'True'));
+
+				return [
+					$errorBuilder->build(),
+				];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/BooleanOrConstantConditionRule.php b/src/Rules/Comparison/BooleanOrConstantConditionRule.php
new file mode 100644
index 00000000..7c5fc5e9
--- /dev/null
+++ b/src/Rules/Comparison/BooleanOrConstantConditionRule.php
@@ -0,0 +1,160 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\BooleanOrNode;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<BooleanOrNode>
+ */
+final class BooleanOrConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return BooleanOrNode::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$originalNode = $node->getOriginalNode();
+		$nodeText = $originalNode->getOperatorSigil();
+		$messages = [];
+		$leftType = $this->helper->getBooleanType($scope, $originalNode->left);
+		$identifierType = $originalNode instanceof Node\Expr\BinaryOp\BooleanOr ? 'booleanOr' : 'logicalOr';
+		if ($leftType instanceof ConstantBooleanType) {
+			$addTipLeft = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $originalNode): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $originalNode->left);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$leftType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipLeft(RuleErrorBuilder::message(sprintf(
+					'Left side of %s is always %s.',
+					$nodeText,
+					$leftType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('%s.leftAlways%s', $identifierType, $leftType->getValue() ? 'True' : 'False'))
+					->line($originalNode->left->getStartLine());
+				if ($leftType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$messages[] = $errorBuilder->build();
+			}
+		}
+
+		$rightScope = $node->getRightScope();
+		$rightType = $this->helper->getBooleanType(
+			$rightScope,
+			$originalNode->right,
+		);
+		if ($rightType instanceof ConstantBooleanType && !$scope->isInFirstLevelStatement()) {
+			$addTipRight = function (RuleErrorBuilder $ruleErrorBuilder) use ($rightScope, $originalNode): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType(
+					$rightScope,
+					$originalNode->right,
+				);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$rightType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipRight(RuleErrorBuilder::message(sprintf(
+					'Right side of %s is always %s.',
+					$nodeText,
+					$rightType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('%s.rightAlways%s', $identifierType, $rightType->getValue() ? 'True' : 'False'))
+					->line($originalNode->right->getStartLine());
+				if ($rightType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$messages[] = $errorBuilder->build();
+			}
+		}
+
+		if (count($messages) === 0 && !$scope->isInFirstLevelStatement()) {
+			$nodeType = $this->treatPhpDocTypesAsCertain ? $scope->getType($originalNode) : $scope->getNativeType($originalNode);
+			if ($nodeType instanceof ConstantBooleanType) {
+				$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $originalNode): RuleErrorBuilder {
+					if (!$this->treatPhpDocTypesAsCertain) {
+						return $ruleErrorBuilder;
+					}
+
+					$booleanNativeType = $scope->getNativeType($originalNode);
+					if ($booleanNativeType instanceof ConstantBooleanType) {
+						return $ruleErrorBuilder;
+					}
+					if (!$this->treatPhpDocTypesAsCertainTip) {
+						return $ruleErrorBuilder;
+					}
+
+					return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+				};
+
+				$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+				if (!$nodeType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+						'Result of %s is always %s.',
+						$nodeText,
+						$nodeType->getValue() ? 'true' : 'false',
+					)));
+					if ($nodeType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+						$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+					}
+
+					$errorBuilder->identifier(sprintf('%s.always%s', $identifierType, $nodeType->getValue() ? 'True' : 'False'));
+
+					$messages[] = $errorBuilder->build();
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Comparison/ConstantConditionRuleHelper.php b/src/Rules/Comparison/ConstantConditionRuleHelper.php
new file mode 100644
index 00000000..32f4f1b8
--- /dev/null
+++ b/src/Rules/Comparison/ConstantConditionRuleHelper.php
@@ -0,0 +1,86 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Type\BooleanType;
+
+final class ConstantConditionRuleHelper
+{
+
+	public function __construct(
+		private ImpossibleCheckTypeHelper $impossibleCheckTypeHelper,
+		private bool $treatPhpDocTypesAsCertain,
+	)
+	{
+	}
+
+	public function shouldSkip(Scope $scope, Expr $expr): bool
+	{
+		if (
+			$expr instanceof Expr\BinaryOp\Equal
+			|| $expr instanceof Expr\BinaryOp\NotEqual
+		) {
+			return true;
+		}
+
+		if (
+			$expr instanceof Expr\Instanceof_
+			|| $expr instanceof Expr\BinaryOp\Identical
+			|| $expr instanceof Expr\BinaryOp\NotIdentical
+			|| $expr instanceof Expr\BooleanNot
+			|| $expr instanceof Expr\BinaryOp\BooleanOr
+			|| $expr instanceof Expr\BinaryOp\BooleanAnd
+			|| $expr instanceof Expr\Ternary
+			|| $expr instanceof Expr\Isset_
+			|| $expr instanceof Expr\Empty_
+			|| $expr instanceof Expr\BinaryOp\Greater
+			|| $expr instanceof Expr\BinaryOp\GreaterOrEqual
+			|| $expr instanceof Expr\BinaryOp\Smaller
+			|| $expr instanceof Expr\BinaryOp\SmallerOrEqual
+		) {
+			// already checked by different rules
+			return true;
+		}
+
+		if (
+			$expr instanceof FuncCall
+			|| $expr instanceof MethodCall
+			|| $expr instanceof Expr\StaticCall
+		) {
+			$isAlways = $this->impossibleCheckTypeHelper->findSpecifiedType($scope, $expr);
+			if ($isAlways !== null) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public function getBooleanType(Scope $scope, Expr $expr): BooleanType
+	{
+		if ($this->shouldSkip($scope, $expr)) {
+			return new BooleanType();
+		}
+
+		if ($this->treatPhpDocTypesAsCertain) {
+			return $scope->getType($expr)->toBoolean();
+		}
+
+		return $scope->getNativeType($expr)->toBoolean();
+	}
+
+	public function getNativeBooleanType(Scope $scope, Expr $expr): BooleanType
+	{
+		if ($this->shouldSkip($scope, $expr)) {
+			return new BooleanType();
+		}
+
+		return $scope->getNativeType($expr)->toBoolean();
+	}
+
+}
diff --git a/src/Rules/Comparison/ConstantLooseComparisonRule.php b/src/Rules/Comparison/ConstantLooseComparisonRule.php
new file mode 100644
index 00000000..4b2ae0cc
--- /dev/null
+++ b/src/Rules/Comparison/ConstantLooseComparisonRule.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\BinaryOp>
+ */
+final class ConstantLooseComparisonRule implements Rule
+{
+
+	public function __construct(
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\BinaryOp::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node instanceof Node\Expr\BinaryOp\Equal && !$node instanceof Node\Expr\BinaryOp\NotEqual) {
+			return [];
+		}
+
+		$nodeType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node) : $scope->getNativeType($node);
+		if (!$nodeType instanceof ConstantBooleanType) {
+			return [];
+		}
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$instanceofTypeWithoutPhpDocs = $scope->getNativeType($node);
+			if ($instanceofTypeWithoutPhpDocs instanceof ConstantBooleanType) {
+				return $ruleErrorBuilder;
+			}
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		if (!$nodeType->getValue()) {
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Loose comparison using %s between %s and %s will always evaluate to false.',
+					$node->getOperatorSigil(),
+					$scope->getType($node->left)->describe(VerbosityLevel::value()),
+					$scope->getType($node->right)->describe(VerbosityLevel::value()),
+				)))->identifier(sprintf('%s.alwaysFalse', $node instanceof Node\Expr\BinaryOp\Equal ? 'equal' : 'notEqual'))->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Loose comparison using %s between %s and %s will always evaluate to true.',
+			$node->getOperatorSigil(),
+			$scope->getType($node->left)->describe(VerbosityLevel::value()),
+			$scope->getType($node->right)->describe(VerbosityLevel::value()),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		$errorBuilder->identifier(sprintf('%s.alwaysTrue', $node instanceof Node\Expr\BinaryOp\Equal ? 'equal' : 'notEqual'));
+
+		return [$errorBuilder->build()];
+	}
+
+}
diff --git a/src/Rules/Comparison/DoWhileLoopConstantConditionRule.php b/src/Rules/Comparison/DoWhileLoopConstantConditionRule.php
new file mode 100644
index 00000000..93a0fd9f
--- /dev/null
+++ b/src/Rules/Comparison/DoWhileLoopConstantConditionRule.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Scalar\Int_;
+use PhpParser\Node\Stmt\Break_;
+use PhpParser\Node\Stmt\Continue_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\DoWhileLoopConditionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<DoWhileLoopConditionNode>
+ */
+final class DoWhileLoopConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return DoWhileLoopConditionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->getCond());
+		if ($exprType instanceof ConstantBooleanType) {
+			if ($exprType->getValue()) {
+				foreach ($node->getExitPoints() as $exitPoint) {
+					$statement = $exitPoint->getStatement();
+					if ($statement instanceof Break_) {
+						return [];
+					}
+					if (!$statement instanceof Continue_) {
+						return [];
+					}
+					if ($statement->num === null) {
+						continue;
+					}
+					if (!$statement->num instanceof Int_) {
+						continue;
+					}
+					$value = $statement->num->value;
+					if ($value === 1) {
+						continue;
+					}
+
+					if ($value > 1) {
+						return [];
+					}
+				}
+			}
+
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->getCond());
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Do-while loop condition is always %s.',
+					$exprType->getValue() ? 'true' : 'false',
+				)))
+					->line($node->getCond()->getStartLine())
+					->identifier(sprintf('doWhile.always%s', $exprType->getValue() ? 'True' : 'False'))
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/ElseIfConstantConditionRule.php b/src/Rules/Comparison/ElseIfConstantConditionRule.php
new file mode 100644
index 00000000..8b9a5274
--- /dev/null
+++ b/src/Rules/Comparison/ElseIfConstantConditionRule.php
@@ -0,0 +1,77 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ElseIf_>
+ */
+final class ElseIfConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ElseIf_::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->cond);
+		if ($exprType instanceof ConstantBooleanType) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->cond);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->cond->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$exprType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+					'Elseif condition is always %s.',
+					$exprType->getValue() ? 'true' : 'false',
+				)))->line($node->cond->getStartLine());
+
+				if ($exprType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+
+				$errorBuilder->identifier(sprintf('elseif.always%s', $exprType->getValue() ? 'True' : 'False'));
+
+				return [$errorBuilder->build()];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/IfConstantConditionRule.php b/src/Rules/Comparison/IfConstantConditionRule.php
new file mode 100644
index 00000000..52030271
--- /dev/null
+++ b/src/Rules/Comparison/IfConstantConditionRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\If_>
+ */
+final class IfConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\If_::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->cond);
+		if ($exprType instanceof ConstantBooleanType) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->cond);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'If condition is always %s.',
+					$exprType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('if.always%s', $exprType->getValue() ? 'True' : 'False'))
+					->line($node->cond->getStartLine())->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/ImpossibleCheckTypeFunctionCallRule.php b/src/Rules/Comparison/ImpossibleCheckTypeFunctionCallRule.php
new file mode 100644
index 00000000..ab437ab6
--- /dev/null
+++ b/src/Rules/Comparison/ImpossibleCheckTypeFunctionCallRule.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ImpossibleCheckTypeFunctionCallRule implements Rule
+{
+
+	public function __construct(
+		private ImpossibleCheckTypeHelper $impossibleCheckTypeHelper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		$functionName = (string) $node->name;
+		if (strtolower($functionName) === 'is_a') {
+			return [];
+		}
+		$isAlways = $this->impossibleCheckTypeHelper->findSpecifiedType($scope, $node);
+		if ($isAlways === null) {
+			return [];
+		}
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$isAlways = $this->impossibleCheckTypeHelper->doNotTreatPhpDocTypesAsCertain()->findSpecifiedType($scope, $node);
+			if ($isAlways !== null) {
+				return $ruleErrorBuilder;
+			}
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		if (!$isAlways) {
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Call to function %s()%s will always evaluate to false.',
+					$functionName,
+					$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+				)))->identifier('function.impossibleType')->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Call to function %s()%s will always evaluate to true.',
+			$functionName,
+			$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		$errorBuilder->identifier('function.alreadyNarrowedType');
+
+		return [$errorBuilder->build()];
+	}
+
+}
diff --git a/src/Rules/Comparison/ImpossibleCheckTypeHelper.php b/src/Rules/Comparison/ImpossibleCheckTypeHelper.php
new file mode 100644
index 00000000..fbe28cc2
--- /dev/null
+++ b/src/Rules/Comparison/ImpossibleCheckTypeHelper.php
@@ -0,0 +1,423 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\TypeWithClassName;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function array_pop;
+use function count;
+use function implode;
+use function in_array;
+use function is_string;
+use function sprintf;
+use function strtolower;
+
+final class ImpossibleCheckTypeHelper
+{
+
+	/**
+	 * @param string[] $universalObjectCratesClasses
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private TypeSpecifier $typeSpecifier,
+		private array $universalObjectCratesClasses,
+		private bool $treatPhpDocTypesAsCertain,
+	)
+	{
+	}
+
+	public function findSpecifiedType(
+		Scope $scope,
+		Expr $node,
+	): ?bool
+	{
+		if ($node instanceof FuncCall) {
+			if ($node->isFirstClassCallable()) {
+				return null;
+			}
+			$argsCount = count($node->getArgs());
+			if ($node->name instanceof Node\Name) {
+				$functionName = strtolower((string) $node->name);
+				if ($functionName === 'assert' && $argsCount >= 1) {
+					$arg = $node->getArgs()[0]->value;
+					$assertValue = ($this->treatPhpDocTypesAsCertain ? $scope->getType($arg) : $scope->getNativeType($arg))->toBoolean();
+					if (!$assertValue instanceof ConstantBooleanType) {
+						return null;
+					}
+
+					return $assertValue->getValue();
+				}
+				if (in_array($functionName, [
+					'class_exists',
+					'interface_exists',
+					'trait_exists',
+					'enum_exists',
+				], true)) {
+					return null;
+				}
+				if (in_array($functionName, ['count', 'sizeof'], true)) {
+					return null;
+				} elseif ($functionName === 'defined') {
+					return null;
+				} elseif ($functionName === 'array_search') {
+					return null;
+				} elseif ($functionName === 'in_array' && $argsCount >= 2) {
+					$haystackArg = $node->getArgs()[1]->value;
+					$haystackType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($haystackArg) : $scope->getNativeType($haystackArg));
+					if ($haystackType instanceof MixedType) {
+						return null;
+					}
+
+					if (!$haystackType->isArray()->yes()) {
+						return null;
+					}
+
+					$needleArg = $node->getArgs()[0]->value;
+					$needleType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($needleArg) : $scope->getNativeType($needleArg));
+
+					$isStrictComparison = false;
+					if ($argsCount >= 3) {
+						$strictNodeType = $scope->getType($node->getArgs()[2]->value);
+						$isStrictComparison = $strictNodeType->isTrue()->yes();
+					}
+
+					$isStrictComparison = $isStrictComparison
+						|| $needleType->isEnum()->yes()
+						|| $haystackType->getIterableValueType()->isEnum()->yes();
+
+					if (!$isStrictComparison) {
+						return null;
+					}
+
+					$valueType = $haystackType->getIterableValueType();
+					$constantNeedleTypesCount = count($needleType->getFiniteTypes());
+					$constantHaystackTypesCount = count($valueType->getFiniteTypes());
+					$isNeedleSupertype = $needleType->isSuperTypeOf($valueType);
+					if ($haystackType->isConstantArray()->no()) {
+						if ($haystackType->isIterableAtLeastOnce()->yes()) {
+							// In this case the generic implementation via typeSpecifier fails, because the argument types cannot be narrowed down.
+							if ($constantNeedleTypesCount === 1 && $constantHaystackTypesCount === 1) {
+								if ($isNeedleSupertype->yes()) {
+									return true;
+								}
+								if ($isNeedleSupertype->no()) {
+									return false;
+								}
+							}
+
+							return null;
+						}
+					}
+
+					if (!$haystackType instanceof ConstantArrayType || count($haystackType->getValueTypes()) > 0) {
+						$haystackArrayTypes = $haystackType->getArrays();
+						if (count($haystackArrayTypes) === 1 && $haystackArrayTypes[0]->getIterableValueType() instanceof NeverType) {
+							return null;
+						}
+
+						if ($isNeedleSupertype->maybe() || $isNeedleSupertype->yes()) {
+							foreach ($haystackArrayTypes as $haystackArrayType) {
+								if ($haystackArrayType instanceof ConstantArrayType) {
+									foreach ($haystackArrayType->getValueTypes() as $i => $haystackArrayValueType) {
+										if ($haystackArrayType->isOptionalKey($i)) {
+											continue;
+										}
+
+										foreach ($haystackArrayValueType->getConstantScalarTypes() as $constantScalarType) {
+											if ($constantScalarType->isSuperTypeOf($needleType)->yes()) {
+												continue 3;
+											}
+										}
+									}
+								} else {
+									foreach ($haystackArrayType->getIterableValueType()->getConstantScalarTypes() as $constantScalarType) {
+										if ($constantScalarType->isSuperTypeOf($needleType)->yes()) {
+											continue 2;
+										}
+									}
+								}
+
+								return null;
+							}
+						}
+
+						if ($isNeedleSupertype->yes()) {
+							$hasConstantNeedleTypes = $constantNeedleTypesCount > 0;
+							$hasConstantHaystackTypes = $constantHaystackTypesCount > 0;
+							if (
+								(!$hasConstantNeedleTypes && !$hasConstantHaystackTypes)
+								|| $hasConstantNeedleTypes !== $hasConstantHaystackTypes
+							) {
+								return null;
+							}
+						}
+					}
+				} elseif ($functionName === 'method_exists' && $argsCount >= 2) {
+					$objectArg = $node->getArgs()[0]->value;
+					$objectType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($objectArg) : $scope->getNativeType($objectArg));
+
+					if ($objectType instanceof ConstantStringType
+						&& !$this->reflectionProvider->hasClass($objectType->getValue())
+					) {
+						return false;
+					}
+
+					$methodArg = $node->getArgs()[1]->value;
+					$methodType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($methodArg) : $scope->getNativeType($methodArg));
+
+					if ($methodType instanceof ConstantStringType) {
+						if ($objectType instanceof ConstantStringType) {
+							$objectType = new ObjectType($objectType->getValue());
+						}
+
+						if ($objectType->getObjectClassNames() !== []) {
+							if ($objectType->hasMethod($methodType->getValue())->yes()) {
+								return true;
+							}
+
+							if ($objectType->hasMethod($methodType->getValue())->no()) {
+								return false;
+							}
+						}
+
+						$genericType = TypeTraverser::map($objectType, static function (Type $type, callable $traverse): Type {
+							if ($type instanceof UnionType || $type instanceof IntersectionType) {
+								return $traverse($type);
+							}
+							if ($type instanceof GenericClassStringType) {
+								return $type->getGenericType();
+							}
+							return new MixedType();
+						});
+
+						if ($genericType instanceof TypeWithClassName) {
+							if ($genericType->hasMethod($methodType->getValue())->yes()) {
+								return true;
+							}
+
+							$classReflection = $genericType->getClassReflection();
+							if (
+								$classReflection !== null
+								&& $classReflection->isFinal()
+								&& $genericType->hasMethod($methodType->getValue())->no()) {
+								return false;
+							}
+						}
+					}
+				}
+			}
+		}
+
+		if (!$scope instanceof MutatingScope) {
+			throw new ShouldNotHappenException();
+		}
+
+		$typeSpecifierScope = $this->treatPhpDocTypesAsCertain ? $scope : $scope->doNotTreatPhpDocTypesAsCertain();
+		$specifiedTypes = $this->typeSpecifier->specifyTypesInCondition($typeSpecifierScope, $node, $this->determineContext($typeSpecifierScope, $node));
+
+		// don't validate types on overwrite
+		if ($specifiedTypes->shouldOverwrite()) {
+			return null;
+		}
+
+		$sureTypes = $specifiedTypes->getSureTypes();
+		$sureNotTypes = $specifiedTypes->getSureNotTypes();
+
+		$rootExpr = $specifiedTypes->getRootExpr();
+		if ($rootExpr !== null) {
+			if (self::isSpecified($typeSpecifierScope, $node, $rootExpr)) {
+				return null;
+			}
+
+			$rootExprType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($rootExpr) : $scope->getNativeType($rootExpr));
+			if ($rootExprType instanceof ConstantBooleanType) {
+				return $rootExprType->getValue();
+			}
+
+			return null;
+		}
+
+		$results = [];
+
+		foreach ($sureTypes as $sureType) {
+			if (self::isSpecified($typeSpecifierScope, $node, $sureType[0])) {
+				$results[] = TrinaryLogic::createMaybe();
+				continue;
+			}
+
+			if ($this->treatPhpDocTypesAsCertain) {
+				$argumentType = $scope->getType($sureType[0]);
+			} else {
+				$argumentType = $scope->getNativeType($sureType[0]);
+			}
+
+			/** @var Type $resultType */
+			$resultType = $sureType[1];
+
+			$results[] = $resultType->isSuperTypeOf($argumentType)->result;
+		}
+
+		foreach ($sureNotTypes as $sureNotType) {
+			if (self::isSpecified($typeSpecifierScope, $node, $sureNotType[0])) {
+				$results[] = TrinaryLogic::createMaybe();
+				continue;
+			}
+
+			if ($this->treatPhpDocTypesAsCertain) {
+				$argumentType = $scope->getType($sureNotType[0]);
+			} else {
+				$argumentType = $scope->getNativeType($sureNotType[0]);
+			}
+
+			/** @var Type $resultType */
+			$resultType = $sureNotType[1];
+
+			$results[] = $resultType->isSuperTypeOf($argumentType)->negate()->result;
+		}
+
+		if (count($results) === 0) {
+			return null;
+		}
+
+		$result = TrinaryLogic::createYes()->and(...$results);
+		return $result->maybe() ? null : $result->yes();
+	}
+
+	private static function isSpecified(Scope $scope, Expr $node, Expr $expr): bool
+	{
+		if ($expr === $node) {
+			return true;
+		}
+
+		if ($expr instanceof Expr\Variable) {
+			return is_string($expr->name) && !$scope->hasVariableType($expr->name)->yes();
+		}
+
+		if ($expr instanceof Expr\BooleanNot) {
+			return self::isSpecified($scope, $node, $expr->expr);
+		}
+
+		if ($expr instanceof Expr\BinaryOp) {
+			return self::isSpecified($scope, $node, $expr->left) || self::isSpecified($scope, $node, $expr->right);
+		}
+
+		return (
+			$node instanceof FuncCall
+			|| $node instanceof MethodCall
+			|| $node instanceof Expr\StaticCall
+		) && $scope->hasExpressionType($expr)->yes();
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 */
+	public function getArgumentsDescription(
+		Scope $scope,
+		array $args,
+	): string
+	{
+		if (count($args) === 0) {
+			return '';
+		}
+
+		$descriptions = array_map(fn (Arg $arg): string => ($this->treatPhpDocTypesAsCertain ? $scope->getType($arg->value) : $scope->getNativeType($arg->value))->describe(VerbosityLevel::value()), $args);
+
+		if (count($descriptions) < 3) {
+			return sprintf(' with %s', implode(' and ', $descriptions));
+		}
+
+		$lastDescription = array_pop($descriptions);
+
+		return sprintf(
+			' with arguments %s and %s',
+			implode(', ', $descriptions),
+			$lastDescription,
+		);
+	}
+
+	public function doNotTreatPhpDocTypesAsCertain(): self
+	{
+		if (!$this->treatPhpDocTypesAsCertain) {
+			return $this;
+		}
+
+		return new self(
+			$this->reflectionProvider,
+			$this->typeSpecifier,
+			$this->universalObjectCratesClasses,
+			false,
+		);
+	}
+
+	private function determineContext(Scope $scope, Expr $node): TypeSpecifierContext
+	{
+		if ($node instanceof Expr\CallLike && $node->isFirstClassCallable()) {
+			return TypeSpecifierContext::createTruthy();
+		}
+
+		if ($node instanceof FuncCall && $node->name instanceof Node\Name) {
+			if ($this->reflectionProvider->hasFunction($node->name, $scope)) {
+				$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+				$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $node->getArgs(), $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
+				$returnType = TypeUtils::resolveLateResolvableTypes($parametersAcceptor->getReturnType());
+
+				return $returnType->isVoid()->yes() ? TypeSpecifierContext::createNull() : TypeSpecifierContext::createTruthy();
+			}
+		} elseif ($node instanceof MethodCall && $node->name instanceof Node\Identifier) {
+			$methodCalledOnType = $scope->getType($node->var);
+			$methodReflection = $scope->getMethodReflection($methodCalledOnType, $node->name->name);
+			if ($methodReflection !== null) {
+				$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $node->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
+				$returnType = TypeUtils::resolveLateResolvableTypes($parametersAcceptor->getReturnType());
+
+				return $returnType->isVoid()->yes() ? TypeSpecifierContext::createNull() : TypeSpecifierContext::createTruthy();
+			}
+		} elseif ($node instanceof StaticCall && $node->name instanceof Node\Identifier) {
+			if ($node->class instanceof Node\Name) {
+				$calleeType = $scope->resolveTypeByName($node->class);
+			} else {
+				$calleeType = $scope->getType($node->class);
+			}
+
+			$staticMethodReflection = $scope->getMethodReflection($calleeType, $node->name->name);
+			if ($staticMethodReflection !== null) {
+				$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $node->getArgs(), $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
+				$returnType = TypeUtils::resolveLateResolvableTypes($parametersAcceptor->getReturnType());
+
+				return $returnType->isVoid()->yes() ? TypeSpecifierContext::createNull() : TypeSpecifierContext::createTruthy();
+			}
+		}
+
+		return TypeSpecifierContext::createTruthy();
+	}
+
+}
diff --git a/src/Rules/Comparison/ImpossibleCheckTypeMethodCallRule.php b/src/Rules/Comparison/ImpossibleCheckTypeMethodCallRule.php
new file mode 100644
index 00000000..aa2a8d3b
--- /dev/null
+++ b/src/Rules/Comparison/ImpossibleCheckTypeMethodCallRule.php
@@ -0,0 +1,111 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\MethodCall>
+ */
+final class ImpossibleCheckTypeMethodCallRule implements Rule
+{
+
+	public function __construct(
+		private ImpossibleCheckTypeHelper $impossibleCheckTypeHelper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\MethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		$isAlways = $this->impossibleCheckTypeHelper->findSpecifiedType($scope, $node);
+		if ($isAlways === null) {
+			return [];
+		}
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$isAlways = $this->impossibleCheckTypeHelper->doNotTreatPhpDocTypesAsCertain()->findSpecifiedType($scope, $node);
+			if ($isAlways !== null) {
+				return $ruleErrorBuilder;
+			}
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		if (!$isAlways) {
+			$method = $this->getMethod($node->var, $node->name->name, $scope);
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Call to method %s::%s()%s will always evaluate to false.',
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+				)))->identifier('method.impossibleType')->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$method = $this->getMethod($node->var, $node->name->name, $scope);
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Call to method %s::%s()%s will always evaluate to true.',
+			$method->getDeclaringClass()->getDisplayName(),
+			$method->getName(),
+			$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		$errorBuilder->identifier('method.alreadyNarrowedType');
+
+		return [$errorBuilder->build()];
+	}
+
+	private function getMethod(
+		Expr $var,
+		string $methodName,
+		Scope $scope,
+	): MethodReflection
+	{
+		$calledOnType = $scope->getType($var);
+		$method = $scope->getMethodReflection($calledOnType, $methodName);
+		if ($method === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $method;
+	}
+
+}
diff --git a/src/Rules/Comparison/ImpossibleCheckTypeStaticMethodCallRule.php b/src/Rules/Comparison/ImpossibleCheckTypeStaticMethodCallRule.php
new file mode 100644
index 00000000..9fc10fea
--- /dev/null
+++ b/src/Rules/Comparison/ImpossibleCheckTypeStaticMethodCallRule.php
@@ -0,0 +1,121 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\StaticCall>
+ */
+final class ImpossibleCheckTypeStaticMethodCallRule implements Rule
+{
+
+	public function __construct(
+		private ImpossibleCheckTypeHelper $impossibleCheckTypeHelper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\StaticCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		$isAlways = $this->impossibleCheckTypeHelper->findSpecifiedType($scope, $node);
+		if ($isAlways === null) {
+			return [];
+		}
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$isAlways = $this->impossibleCheckTypeHelper->doNotTreatPhpDocTypesAsCertain()->findSpecifiedType($scope, $node);
+			if ($isAlways !== null) {
+				return $ruleErrorBuilder;
+			}
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		if (!$isAlways) {
+			$method = $this->getMethod($node->class, $node->name->name, $scope);
+
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Call to static method %s::%s()%s will always evaluate to false.',
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+				)))->identifier('staticMethod.impossibleType')->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$method = $this->getMethod($node->class, $node->name->name, $scope);
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Call to static method %s::%s()%s will always evaluate to true.',
+			$method->getDeclaringClass()->getDisplayName(),
+			$method->getName(),
+			$this->impossibleCheckTypeHelper->getArgumentsDescription($scope, $node->getArgs()),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		$errorBuilder->identifier('staticMethod.alreadyNarrowedType');
+
+		return [$errorBuilder->build()];
+	}
+
+	/**
+	 * @param Node\Name|Expr $class
+	 * @throws ShouldNotHappenException
+	 */
+	private function getMethod(
+		$class,
+		string $methodName,
+		Scope $scope,
+	): MethodReflection
+	{
+		if ($class instanceof Node\Name) {
+			$calledOnType = $scope->resolveTypeByName($class);
+		} else {
+			$calledOnType = $scope->getType($class);
+		}
+
+		$method = $scope->getMethodReflection($calledOnType, $methodName);
+		if ($method === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $method;
+	}
+
+}
diff --git a/src/Rules/Comparison/LogicalXorConstantConditionRule.php b/src/Rules/Comparison/LogicalXorConstantConditionRule.php
new file mode 100644
index 00000000..6c78bb4d
--- /dev/null
+++ b/src/Rules/Comparison/LogicalXorConstantConditionRule.php
@@ -0,0 +1,110 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp\LogicalXor;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<LogicalXor>
+ */
+final class LogicalXorConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return LogicalXor::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		$leftType = $this->helper->getBooleanType($scope, $node->left);
+		if ($leftType instanceof ConstantBooleanType) {
+			$addTipLeft = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->left);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$leftType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipLeft(RuleErrorBuilder::message(sprintf(
+					'Left side of xor is always %s.',
+					$leftType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('logicalXor.leftAlways%s', $leftType->getValue() ? 'True' : 'False'))
+					->line($node->left->getStartLine());
+				if ($leftType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$errors[] = $errorBuilder->build();
+			}
+		}
+
+		$rightType = $this->helper->getBooleanType($scope, $node->right);
+		if ($rightType instanceof ConstantBooleanType) {
+			$addTipRight = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType(
+					$scope,
+					$node->right,
+				);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+			if (!$rightType->getValue() || $isLast !== true || $this->reportAlwaysTrueInLastCondition) {
+				$errorBuilder = $addTipRight(RuleErrorBuilder::message(sprintf(
+					'Right side of xor is always %s.',
+					$rightType->getValue() ? 'true' : 'false',
+				)))
+					->identifier(sprintf('logicalXor.rightAlways%s', $rightType->getValue() ? 'True' : 'False'))
+					->line($node->right->getStartLine());
+				if ($rightType->getValue() && $isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+				$errors[] = $errorBuilder->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Comparison/MatchExpressionRule.php b/src/Rules/Comparison/MatchExpressionRule.php
new file mode 100644
index 00000000..a3d866ad
--- /dev/null
+++ b/src/Rules/Comparison/MatchExpressionRule.php
@@ -0,0 +1,175 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MatchExpressionNode;
+use PHPStan\Parser\TryCatchTypeVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use UnhandledMatchError;
+use function array_map;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<MatchExpressionNode>
+ */
+final class MatchExpressionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $constantConditionRuleHelper,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertain,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MatchExpressionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$matchCondition = $node->getCondition();
+		$matchConditionType = $scope->getType($matchCondition);
+		$nextArmIsDeadForType = false;
+		$nextArmIsDeadForNativeType = false;
+		$errors = [];
+		$armsCount = count($node->getArms());
+		$hasDefault = false;
+		foreach ($node->getArms() as $i => $arm) {
+			if (
+				$nextArmIsDeadForNativeType
+				|| ($nextArmIsDeadForType && $this->treatPhpDocTypesAsCertain)
+			) {
+				continue;
+			}
+			$armConditions = $arm->getConditions();
+			if (count($armConditions) === 0) {
+				$hasDefault = true;
+			}
+			foreach ($armConditions as $armCondition) {
+				$armConditionScope = $armCondition->getScope();
+				$armConditionExpr = new Node\Expr\BinaryOp\Identical(
+					$matchCondition,
+					$armCondition->getCondition(),
+				);
+
+				$armConditionResult = $armConditionScope->getType($armConditionExpr);
+				if (!$armConditionResult instanceof ConstantBooleanType) {
+					continue;
+				}
+				if ($armConditionResult->getValue()) {
+					$nextArmIsDeadForType = true;
+				}
+
+				if (!$this->treatPhpDocTypesAsCertain) {
+					$armConditionNativeResult = $armConditionScope->getNativeType($armConditionExpr);
+					if (!$armConditionNativeResult instanceof ConstantBooleanType) {
+						continue;
+					}
+					if ($armConditionNativeResult->getValue()) {
+						$nextArmIsDeadForNativeType = true;
+					}
+				}
+
+				if ($matchConditionType instanceof ConstantBooleanType) {
+					$armConditionStandaloneResult = $this->constantConditionRuleHelper->getBooleanType($armConditionScope, $armCondition->getCondition());
+					if (!$armConditionStandaloneResult instanceof ConstantBooleanType) {
+						continue;
+					}
+				}
+
+				$armLine = $armCondition->getLine();
+				if (!$armConditionResult->getValue()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Match arm comparison between %s and %s is always false.',
+						$armConditionScope->getType($matchCondition)->describe(VerbosityLevel::value()),
+						$armConditionScope->getType($armCondition->getCondition())->describe(VerbosityLevel::value()),
+					))->line($armLine)->identifier('match.alwaysFalse')->build();
+					continue;
+				}
+
+				if ($i === $armsCount - 1 && !$this->reportAlwaysTrueInLastCondition) {
+					continue;
+				}
+				$errorBuilder = RuleErrorBuilder::message(sprintf(
+					'Match arm comparison between %s and %s is always true.',
+					$armConditionScope->getType($matchCondition)->describe(VerbosityLevel::value()),
+					$armConditionScope->getType($armCondition->getCondition())->describe(VerbosityLevel::value()),
+				))->line($armLine);
+				if ($i !== $armsCount - 1 && !$this->reportAlwaysTrueInLastCondition) {
+					$errorBuilder->tip('Remove remaining cases below this one and this error will disappear too.');
+				}
+
+				$errorBuilder->identifier('match.alwaysTrue');
+
+				$errors[] = $errorBuilder->build();
+			}
+		}
+
+		if (!$hasDefault && !$nextArmIsDeadForType) {
+			$remainingType = $node->getEndScope()->getType($matchCondition);
+			$cases = $remainingType->getEnumCases();
+			$casesCount = count($cases);
+			if ($casesCount > 1) {
+				$remainingType = new UnionType($cases);
+			}
+			if ($casesCount === 1) {
+				$remainingType = $cases[0];
+			}
+			if (
+				!$remainingType instanceof NeverType
+				&& !$this->isUnhandledMatchErrorCaught($node)
+				&& !$this->hasUnhandledMatchErrorThrowsTag($scope)
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Match expression does not handle remaining %s: %s',
+					$remainingType instanceof UnionType ? 'values' : 'value',
+					$remainingType->describe(VerbosityLevel::value()),
+				))->identifier('match.unhandled')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	private function isUnhandledMatchErrorCaught(Node $node): bool
+	{
+		$tryCatchTypes = $node->getAttribute(TryCatchTypeVisitor::ATTRIBUTE_NAME);
+		if ($tryCatchTypes === null) {
+			return false;
+		}
+
+		$tryCatchType = TypeCombinator::union(...array_map(static fn (string $class) => new ObjectType($class), $tryCatchTypes));
+
+		return $tryCatchType->isSuperTypeOf(new ObjectType(UnhandledMatchError::class))->yes();
+	}
+
+	private function hasUnhandledMatchErrorThrowsTag(Scope $scope): bool
+	{
+		$function = $scope->getFunction();
+		if ($function === null) {
+			return false;
+		}
+
+		$throwsType = $function->getThrowType();
+		if ($throwsType === null) {
+			return false;
+		}
+
+		return $throwsType->isSuperTypeOf(new ObjectType(UnhandledMatchError::class))->yes();
+	}
+
+}
diff --git a/src/Rules/Comparison/NumberComparisonOperatorsConstantConditionRule.php b/src/Rules/Comparison/NumberComparisonOperatorsConstantConditionRule.php
new file mode 100644
index 00000000..7b0c4be6
--- /dev/null
+++ b/src/Rules/Comparison/NumberComparisonOperatorsConstantConditionRule.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\VerbosityLevel;
+use function get_class;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\BinaryOp>
+ */
+final class NumberComparisonOperatorsConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return BinaryOp::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		if (
+			!$node instanceof BinaryOp\Greater
+			&& !$node instanceof BinaryOp\GreaterOrEqual
+			&& !$node instanceof BinaryOp\Smaller
+			&& !$node instanceof BinaryOp\SmallerOrEqual
+		) {
+			return [];
+		}
+
+		$exprType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node) : $scope->getNativeType($node);
+		if ($exprType instanceof ConstantBooleanType) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $scope->getNativeType($node);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			switch (get_class($node)) {
+				case BinaryOp\Greater::class:
+					$nodeType = 'greater';
+					break;
+				case BinaryOp\GreaterOrEqual::class:
+					$nodeType = 'greaterOrEqual';
+					break;
+				case BinaryOp\Smaller::class:
+					$nodeType = 'smaller';
+					break;
+				case BinaryOp\SmallerOrEqual::class:
+					$nodeType = 'smallerOrEqual';
+					break;
+				default:
+					throw new ShouldNotHappenException();
+			}
+
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Comparison operation "%s" between %s and %s is always %s.',
+					$node->getOperatorSigil(),
+					$scope->getType($node->left)->describe(VerbosityLevel::value()),
+					$scope->getType($node->right)->describe(VerbosityLevel::value()),
+					$exprType->getValue() ? 'true' : 'false',
+				)))->identifier(sprintf('%s.always%s', $nodeType, $exprType->getValue() ? 'True' : 'False'))->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/StrictComparisonOfDifferentTypesRule.php b/src/Rules/Comparison/StrictComparisonOfDifferentTypesRule.php
new file mode 100644
index 00000000..6e43de25
--- /dev/null
+++ b/src/Rules/Comparison/StrictComparisonOfDifferentTypesRule.php
@@ -0,0 +1,150 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\RicherScopeGetTypeHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\LastConditionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\BinaryOp>
+ */
+final class StrictComparisonOfDifferentTypesRule implements Rule
+{
+
+	public function __construct(
+		private RicherScopeGetTypeHelper $richerScopeGetTypeHelper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $reportAlwaysTrueInLastCondition,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\BinaryOp::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope instanceof MutatingScope) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($node instanceof Node\Expr\BinaryOp\Identical) {
+			$nodeTypeResult = $this->richerScopeGetTypeHelper->getIdenticalResult($this->treatPhpDocTypesAsCertain ? $scope : $scope->doNotTreatPhpDocTypesAsCertain(), $node);
+		} elseif ($node instanceof Node\Expr\BinaryOp\NotIdentical) {
+			$nodeTypeResult = $this->richerScopeGetTypeHelper->getNotIdenticalResult($this->treatPhpDocTypesAsCertain ? $scope : $scope->doNotTreatPhpDocTypesAsCertain(), $node);
+		} else {
+			return [];
+		}
+
+		$nodeType = $nodeTypeResult->type;
+		if (!$nodeType instanceof ConstantBooleanType) {
+			return [];
+		}
+
+		$leftType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node->left) : $scope->getNativeType($node->left);
+		$rightType = $this->treatPhpDocTypesAsCertain ? $scope->getType($node->right) : $scope->getNativeType($node->right);
+
+		$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node, $nodeTypeResult): RuleErrorBuilder {
+			$reasons = $nodeTypeResult->reasons;
+			if (count($reasons) > 0) {
+				return $ruleErrorBuilder->acceptsReasonsTip($reasons);
+			}
+
+			if (!$this->treatPhpDocTypesAsCertain) {
+				return $ruleErrorBuilder;
+			}
+
+			$instanceofTypeWithoutPhpDocs = $scope->getNativeType($node);
+			if ($instanceofTypeWithoutPhpDocs instanceof ConstantBooleanType) {
+				return $ruleErrorBuilder;
+			}
+			if (!$this->treatPhpDocTypesAsCertainTip) {
+				return $ruleErrorBuilder;
+			}
+
+			return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+		};
+
+		$verbosity = VerbosityLevel::value();
+
+		if (
+			(
+				$leftType->isConstantScalarValue()->yes()
+				&& !$leftType->isString()->no()
+				&& !$rightType->isConstantScalarValue()->yes()
+				&& !$rightType->isString()->no()
+				&& (
+					TrinaryLogic::extremeIdentity($leftType->isLowercaseString(), $rightType->isLowercaseString())->maybe()
+					|| TrinaryLogic::extremeIdentity($leftType->isUppercaseString(), $rightType->isUppercaseString())->maybe()
+				)
+			) || (
+				$rightType->isConstantScalarValue()->yes()
+				&& !$rightType->isString()->no()
+				&& !$leftType->isConstantScalarValue()->yes()
+				&& !$leftType->isString()->no()
+				&& (
+					TrinaryLogic::extremeIdentity($leftType->isLowercaseString(), $rightType->isLowercaseString())->maybe()
+					|| TrinaryLogic::extremeIdentity($leftType->isUppercaseString(), $rightType->isUppercaseString())->maybe()
+				)
+			)
+		) {
+			$verbosity = VerbosityLevel::precise();
+		}
+
+		if (!$nodeType->getValue()) {
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Strict comparison using %s between %s and %s will always evaluate to false.',
+					$node->getOperatorSigil(),
+					$leftType->describe($verbosity),
+					$rightType->describe($verbosity),
+				)))->identifier(sprintf('%s.alwaysFalse', $node instanceof Node\Expr\BinaryOp\Identical ? 'identical' : 'notIdentical'))->build(),
+			];
+		}
+
+		$isLast = $node->getAttribute(LastConditionVisitor::ATTRIBUTE_NAME);
+		if ($isLast === true && !$this->reportAlwaysTrueInLastCondition) {
+			return [];
+		}
+
+		$errorBuilder = $addTip(RuleErrorBuilder::message(sprintf(
+			'Strict comparison using %s between %s and %s will always evaluate to true.',
+			$node->getOperatorSigil(),
+			$leftType->describe($verbosity),
+			$rightType->describe($verbosity),
+		)));
+		if ($isLast === false && !$this->reportAlwaysTrueInLastCondition) {
+			$errorBuilder->addTip('Remove remaining cases below this one and this error will disappear too.');
+		}
+
+		if (
+			$leftType->isEnum()->yes()
+			&& $rightType->isEnum()->yes()
+			&& $node->getAttribute(LastConditionVisitor::ATTRIBUTE_IS_MATCH_NAME, false) !== true
+		) {
+			$errorBuilder->addTip('Use match expression instead. PHPStan will report unhandled enum cases.');
+		}
+
+		$errorBuilder->identifier(sprintf('%s.alwaysTrue', $node instanceof Node\Expr\BinaryOp\Identical ? 'identical' : 'notIdentical'));
+
+		return [
+			$errorBuilder->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Comparison/TernaryOperatorConstantConditionRule.php b/src/Rules/Comparison/TernaryOperatorConstantConditionRule.php
new file mode 100644
index 00000000..3bf0ec6a
--- /dev/null
+++ b/src/Rules/Comparison/TernaryOperatorConstantConditionRule.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Ternary>
+ */
+final class TernaryOperatorConstantConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Ternary::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->cond);
+		if ($exprType instanceof ConstantBooleanType) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->cond);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+			return [
+				$addTip(RuleErrorBuilder::message(sprintf(
+					'Ternary operator condition is always %s.',
+					$exprType->getValue() ? 'true' : 'false',
+				)))->identifier(sprintf('ternary.always%s', $exprType->getValue() ? 'True' : 'False'))->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/UsageOfVoidMatchExpressionRule.php b/src/Rules/Comparison/UsageOfVoidMatchExpressionRule.php
new file mode 100644
index 00000000..15c0c7d4
--- /dev/null
+++ b/src/Rules/Comparison/UsageOfVoidMatchExpressionRule.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Expr\Match_>
+ */
+final class UsageOfVoidMatchExpressionRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Match_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInFirstLevelStatement()) {
+			$matchResultType = $scope->getKeepVoidType($node);
+			if ($matchResultType->isVoid()->yes()) {
+				return [RuleErrorBuilder::message('Result of match expression (void) is used.')->identifier('match.void')->build()];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/WhileLoopAlwaysFalseConditionRule.php b/src/Rules/Comparison/WhileLoopAlwaysFalseConditionRule.php
new file mode 100644
index 00000000..ee07001c
--- /dev/null
+++ b/src/Rules/Comparison/WhileLoopAlwaysFalseConditionRule.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\While_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+
+/**
+ * @implements Rule<While_>
+ */
+final class WhileLoopAlwaysFalseConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return While_::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		$exprType = $this->helper->getBooleanType($scope, $node->cond);
+		if ($exprType->isFalse()->yes()) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $node): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $node->cond);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			return [
+				$addTip(RuleErrorBuilder::message('While loop condition is always false.'))->line($node->cond->getStartLine())
+					->identifier('while.alwaysFalse')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Comparison/WhileLoopAlwaysTrueConditionRule.php b/src/Rules/Comparison/WhileLoopAlwaysTrueConditionRule.php
new file mode 100644
index 00000000..da6c285b
--- /dev/null
+++ b/src/Rules/Comparison/WhileLoopAlwaysTrueConditionRule.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Rules\Comparison;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Scalar\Int_;
+use PhpParser\Node\Stmt\Break_;
+use PhpParser\Node\Stmt\Continue_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\BreaklessWhileLoopNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+
+/**
+ * @implements Rule<BreaklessWhileLoopNode>
+ */
+final class WhileLoopAlwaysTrueConditionRule implements Rule
+{
+
+	public function __construct(
+		private ConstantConditionRuleHelper $helper,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return BreaklessWhileLoopNode::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		foreach ($node->getExitPoints() as $exitPoint) {
+			$statement = $exitPoint->getStatement();
+			if ($statement instanceof Break_) {
+				return [];
+			}
+			if (!$statement instanceof Continue_) {
+				return [];
+			}
+			if ($statement->num === null) {
+				continue;
+			}
+			if (!$statement->num instanceof Int_) {
+				continue;
+			}
+			$value = $statement->num->value;
+			if ($value === 1) {
+				continue;
+			}
+
+			if ($value > 1) {
+				return [];
+			}
+		}
+		$originalNode = $node->getOriginalNode();
+		$exprType = $this->helper->getBooleanType($scope, $originalNode->cond);
+		if ($exprType->isTrue()->yes()) {
+			$addTip = function (RuleErrorBuilder $ruleErrorBuilder) use ($scope, $originalNode): RuleErrorBuilder {
+				if (!$this->treatPhpDocTypesAsCertain) {
+					return $ruleErrorBuilder;
+				}
+
+				$booleanNativeType = $this->helper->getNativeBooleanType($scope, $originalNode->cond);
+				if ($booleanNativeType instanceof ConstantBooleanType) {
+					return $ruleErrorBuilder;
+				}
+				if (!$this->treatPhpDocTypesAsCertainTip) {
+					return $ruleErrorBuilder;
+				}
+
+				return $ruleErrorBuilder->treatPhpDocTypesAsCertainTip();
+			};
+
+			return [
+				$addTip(RuleErrorBuilder::message('While loop condition is always true.'))->line($originalNode->cond->getStartLine())
+					->identifier('while.alwaysTrue')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Constants/AlwaysUsedClassConstantsExtension.php b/src/Rules/Constants/AlwaysUsedClassConstantsExtension.php
new file mode 100644
index 00000000..489a2749
--- /dev/null
+++ b/src/Rules/Constants/AlwaysUsedClassConstantsExtension.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PHPStan\Reflection\ClassConstantReflection;
+
+/**
+ * This is the extension interface to implement if you want to describe
+ * always-used class constant.
+ *
+ * To register it in the configuration file use the `phpstan.constants.alwaysUsedClassConstantsExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.constants.alwaysUsedClassConstantsExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/always-used-class-constants
+ *
+ * @api
+ */
+interface AlwaysUsedClassConstantsExtension
+{
+
+	public function isAlwaysUsed(ClassConstantReflection $constant): bool;
+
+}
diff --git a/src/Rules/Constants/AlwaysUsedClassConstantsExtensionProvider.php b/src/Rules/Constants/AlwaysUsedClassConstantsExtensionProvider.php
new file mode 100644
index 00000000..2ece358c
--- /dev/null
+++ b/src/Rules/Constants/AlwaysUsedClassConstantsExtensionProvider.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+interface AlwaysUsedClassConstantsExtensionProvider
+{
+
+	public const EXTENSION_TAG = 'phpstan.constants.alwaysUsedClassConstantsExtension';
+
+	/**
+	 * @return AlwaysUsedClassConstantsExtension[]
+	 */
+	public function getExtensions(): array;
+
+}
diff --git a/src/Rules/Constants/ClassAsClassConstantRule.php b/src/Rules/Constants/ClassAsClassConstantRule.php
new file mode 100644
index 00000000..bb56a519
--- /dev/null
+++ b/src/Rules/Constants/ClassAsClassConstantRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class ClassAsClassConstantRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+
+		foreach ($node->consts as $const) {
+			if ($const->name->toLowerString() !== 'class') {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message('A class constant must not be called \'class\'; it is reserved for class name fetching.')
+				->line($const->getStartLine())
+				->identifier('classConstant.class')
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Constants/ConstantRule.php b/src/Rules/Constants/ConstantRule.php
new file mode 100644
index 00000000..4222c8b3
--- /dev/null
+++ b/src/Rules/Constants/ConstantRule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\ConstFetch>
+ */
+final class ConstantRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ConstFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->hasConstant($node->name)) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Constant %s not found.',
+					(string) $node->name,
+				))
+					->identifier('constant.notFound')
+					->discoveringSymbolsTip()
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Constants/DynamicClassConstantFetchRule.php b/src/Rules/Constants/DynamicClassConstantFetchRule.php
new file mode 100644
index 00000000..93b3ab46
--- /dev/null
+++ b/src/Rules/Constants/DynamicClassConstantFetchRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassConstFetch>
+ */
+final class DynamicClassConstantFetchRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion, private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassConstFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Expr) {
+			return [];
+		}
+
+		if (!$this->phpVersion->supportsDynamicClassConstantFetch()) {
+			return [
+				RuleErrorBuilder::message('Fetching class constants with a dynamic name is supported only on PHP 8.3 and later.')
+					->identifier('classConstant.dynamicFetch')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->name,
+			'',
+			static fn (Type $type): bool => $type->isString()->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return [];
+		}
+		if ($type->isString()->yes()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Class constant name in dynamic fetch can only be a string, %s given.',
+				$type->describe(VerbosityLevel::typeOnly()),
+			))->identifier('classConstant.nameType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Constants/FinalConstantRule.php b/src/Rules/Constants/FinalConstantRule.php
new file mode 100644
index 00000000..8d8c5d12
--- /dev/null
+++ b/src/Rules/Constants/FinalConstantRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassConst;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/** @implements Rule<ClassConst> */
+final class FinalConstantRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->isFinal()) {
+			return [];
+		}
+
+		if ($this->phpVersion->supportsFinalConstants()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Final class constants are supported only on PHP 8.1 and later.')
+				->identifier('classConstant.finalNotSupported')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Constants/LazyAlwaysUsedClassConstantsExtensionProvider.php b/src/Rules/Constants/LazyAlwaysUsedClassConstantsExtensionProvider.php
new file mode 100644
index 00000000..78d9dbfe
--- /dev/null
+++ b/src/Rules/Constants/LazyAlwaysUsedClassConstantsExtensionProvider.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyAlwaysUsedClassConstantsExtensionProvider implements AlwaysUsedClassConstantsExtensionProvider
+{
+
+	/** @var AlwaysUsedClassConstantsExtension[]|null */
+	private ?array $extensions = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getExtensions(): array
+	{
+		if ($this->extensions === null) {
+			$this->extensions = $this->container->getServicesByTag(AlwaysUsedClassConstantsExtensionProvider::EXTENSION_TAG);
+		}
+
+		return $this->extensions;
+	}
+
+}
diff --git a/src/Rules/Constants/MagicConstantContextRule.php b/src/Rules/Constants/MagicConstantContextRule.php
new file mode 100644
index 00000000..31b59780
--- /dev/null
+++ b/src/Rules/Constants/MagicConstantContextRule.php
@@ -0,0 +1,76 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Scalar\MagicConst;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\MagicConstantParamDefaultVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/** @implements Rule<MagicConst> */
+final class MagicConstantContextRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return MagicConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		// test cases https://3v4l.org/ZUvvr
+
+		if ($node instanceof MagicConst\Class_) {
+			if ($scope->isInClass()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Magic constant %s is always empty outside a class.', $node->getName()),
+				)->identifier('magicConstant.outOfClass')->build(),
+			];
+		} elseif ($node instanceof MagicConst\Trait_) {
+			if ($scope->isInTrait()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Magic constant %s is always empty outside a trait.', $node->getName()),
+				)->identifier('magicConstant.outOfTrait')->build(),
+			];
+		} elseif ($node instanceof MagicConst\Method || $node instanceof MagicConst\Function_) {
+			if ($scope->getFunctionName() !== null) {
+				return [];
+			}
+			if ($scope->isInAnonymousFunction()) {
+				return [];
+			}
+
+			if ((bool) $node->getAttribute(MagicConstantParamDefaultVisitor::ATTRIBUTE_NAME)) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Magic constant %s is always empty outside a function.', $node->getName()),
+				)->identifier('magicConstant.outOfFunction')->build(),
+			];
+		} elseif ($node instanceof MagicConst\Namespace_) {
+			if ($scope->getNamespace() === null) {
+				return [
+					RuleErrorBuilder::message(
+						sprintf('Magic constant %s is always empty in global namespace.', $node->getName()),
+					)->identifier('magicConstant.outOfNamespace')->build(),
+				];
+			}
+		}
+		return [];
+	}
+
+}
diff --git a/src/Rules/Constants/MissingClassConstantTypehintRule.php b/src/Rules/Constants/MissingClassConstantTypehintRule.php
new file mode 100644
index 00000000..89d215fc
--- /dev/null
+++ b/src/Rules/Constants/MissingClassConstantTypehintRule.php
@@ -0,0 +1,97 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class MissingClassConstantTypehintRule implements Rule
+{
+
+	public function __construct(private MissingTypehintCheck $missingTypehintCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$errors = [];
+		foreach ($node->consts as $const) {
+			$constantName = $const->name->toString();
+			$errors = array_merge($errors, $this->processSingleConstant($scope->getClassReflection(), $constantName));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleConstant(ClassReflection $classReflection, string $constantName): array
+	{
+		$constantReflection = $classReflection->getConstant($constantName);
+		$constantType = $constantReflection->getPhpDocType();
+		if ($constantType === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($constantType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s type has no value type specified in iterable type %s.',
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantName,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($constantType) as [$name, $genericTypeNames]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s with generic %s does not specify its types: %s',
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantName,
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($constantType) as $callableType) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s type has no signature specified for %s.',
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantName,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Constants/NativeTypedClassConstantRule.php b/src/Rules/Constants/NativeTypedClassConstantRule.php
new file mode 100644
index 00000000..e262a2c6
--- /dev/null
+++ b/src/Rules/Constants/NativeTypedClassConstantRule.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class NativeTypedClassConstantRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->type === null) {
+			return [];
+		}
+
+		if ($this->phpVersion->supportsNativeTypesInClassConstants()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Class constants with native types are supported only on PHP 8.3 and later.')
+				->identifier('classConstant.nativeTypeNotSupported')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Constants/OverridingConstantRule.php b/src/Rules/Constants/OverridingConstantRule.php
new file mode 100644
index 00000000..7239cfaa
--- /dev/null
+++ b/src/Rules/Constants/OverridingConstantRule.php
@@ -0,0 +1,173 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class OverridingConstantRule implements Rule
+{
+
+	public function __construct(
+		private bool $checkPhpDocMethodSignatures,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$errors = [];
+		foreach ($node->consts as $const) {
+			$constantName = $const->name->toString();
+			$errors = array_merge($errors, $this->processSingleConstant($scope->getClassReflection(), $constantName));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleConstant(ClassReflection $classReflection, string $constantName): array
+	{
+		$prototype = $this->findPrototype($classReflection, $constantName);
+		if ($prototype === null) {
+			return [];
+		}
+
+		$constantReflection = $classReflection->getConstant($constantName);
+		$errors = [];
+		if ($prototype->isFinal()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s overrides final constant %s::%s.',
+				$classReflection->getDisplayName(),
+				$constantReflection->getName(),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$prototype->getName(),
+			))->identifier('classConstant.final')->nonIgnorable()->build();
+		}
+
+		if ($prototype->isPublic()) {
+			if (!$constantReflection->isPublic()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s constant %s::%s overriding public constant %s::%s should also be public.',
+					$constantReflection->isPrivate() ? 'Private' : 'Protected',
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+					$constantReflection->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$prototype->getName(),
+				))->identifier('classConstant.visibility')->nonIgnorable()->build();
+			}
+		} elseif ($constantReflection->isPrivate()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Private constant %s::%s overriding protected constant %s::%s should be protected or public.',
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantReflection->getName(),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$prototype->getName(),
+			))->identifier('classConstant.visibility')->nonIgnorable()->build();
+		}
+
+		if (!$this->checkPhpDocMethodSignatures) {
+			return $errors;
+		}
+
+		$prototypeNativeType = $prototype->getNativeType();
+		$constantNativeType = $constantReflection->getNativeType();
+		if ($prototypeNativeType !== null) {
+			if ($constantNativeType !== null) {
+				if (!$prototypeNativeType->isSuperTypeOf($constantNativeType)->yes()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Native type %s of constant %s::%s is not covariant with native type %s of constant %s::%s.',
+						$constantNativeType->describe(VerbosityLevel::typeOnly()),
+						$constantReflection->getDeclaringClass()->getDisplayName(),
+						$constantReflection->getName(),
+						$prototypeNativeType->describe(VerbosityLevel::typeOnly()),
+						$prototype->getDeclaringClass()->getDisplayName(),
+						$prototype->getName(),
+					))->identifier('classConstant.nativeType')->nonIgnorable()->build();
+				}
+			} else {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Constant %s::%s overriding constant %s::%s (%s) should also have native type %s.',
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+					$constantReflection->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$prototype->getName(),
+					$prototypeNativeType->describe(VerbosityLevel::typeOnly()),
+					$prototypeNativeType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('classConstant.missingNativeType')->nonIgnorable()->build();
+			}
+		}
+
+		if (!$prototype->hasPhpDocType()) {
+			return $errors;
+		}
+
+		if (!$constantReflection->hasPhpDocType()) {
+			return $errors;
+		}
+
+		if (!$prototype->getValueType()->isSuperTypeOf($constantReflection->getValueType())->yes()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Type %s of constant %s::%s is not covariant with type %s of constant %s::%s.',
+				$constantReflection->getValueType()->describe(VerbosityLevel::value()),
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantReflection->getName(),
+				$prototype->getValueType()->describe(VerbosityLevel::value()),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$prototype->getName(),
+			))->identifier('classConstant.type')->build();
+		}
+
+		return $errors;
+	}
+
+	private function findPrototype(ClassReflection $classReflection, string $constantName): ?ClassConstantReflection
+	{
+		foreach ($classReflection->getImmediateInterfaces() as $immediateInterface) {
+			if ($immediateInterface->hasConstant($constantName)) {
+				return $immediateInterface->getConstant($constantName);
+			}
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		if ($parentClass === null) {
+			return null;
+		}
+
+		if (!$parentClass->hasConstant($constantName)) {
+			return null;
+		}
+
+		$constant = $parentClass->getConstant($constantName);
+		if ($constant->isPrivate()) {
+			return null;
+		}
+
+		return $constant;
+	}
+
+}
diff --git a/src/Rules/Constants/ValueAssignedToClassConstantRule.php b/src/Rules/Constants/ValueAssignedToClassConstantRule.php
new file mode 100644
index 00000000..d449746a
--- /dev/null
+++ b/src/Rules/Constants/ValueAssignedToClassConstantRule.php
@@ -0,0 +1,129 @@
+<?php 
+
+namespace PHPStan\Rules\Constants;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class ValueAssignedToClassConstantRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nativeType = null;
+		if ($node->type !== null) {
+			$nativeType = ParserNodeTypeToPHPStanType::resolve($node->type, $scope->getClassReflection());
+		}
+
+		$errors = [];
+		foreach ($node->consts as $const) {
+			$constantName = $const->name->toString();
+			$errors = array_merge($errors, $this->processSingleConstant(
+				$scope->getClassReflection(),
+				$constantName,
+				$scope->getType($const->value),
+				$nativeType,
+			));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleConstant(ClassReflection $classReflection, string $constantName, Type $valueExprType, ?Type $nativeType): array
+	{
+		$constantReflection = $classReflection->getConstant($constantName);
+		$phpDocType = $constantReflection->getPhpDocType();
+		if ($phpDocType === null) {
+			if ($nativeType === null) {
+				return [];
+			}
+
+			$accepts = $nativeType->accepts($valueExprType, true);
+			if ($accepts->yes()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Constant %s::%s (%s) does not accept value %s.',
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+					$constantName,
+					$nativeType->describe(VerbosityLevel::typeOnly()),
+					$valueExprType->describe(VerbosityLevel::value()),
+				))->acceptsReasonsTip($accepts->reasons)->nonIgnorable()->identifier('classConstant.value')->build(),
+			];
+		} elseif ($nativeType === null) {
+			$isSuperType = $phpDocType->isSuperTypeOf($valueExprType);
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($phpDocType, $valueExprType);
+			if ($isSuperType->no()) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag @var for constant %s::%s with type %s is incompatible with value %s.',
+						$constantReflection->getDeclaringClass()->getDisplayName(),
+						$constantName,
+						$phpDocType->describe($verbosity),
+						$valueExprType->describe(VerbosityLevel::value()),
+					))->identifier('classConstant.phpDocType')->build(),
+				];
+
+			} elseif ($isSuperType->maybe()) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag @var for constant %s::%s with type %s is not subtype of value %s.',
+						$constantReflection->getDeclaringClass()->getDisplayName(),
+						$constantName,
+						$phpDocType->describe($verbosity),
+						$valueExprType->describe(VerbosityLevel::value()),
+					))->identifier('classConstant.phpDocType')->build(),
+				];
+			}
+
+			return [];
+		}
+
+		$type = $constantReflection->getValueType();
+		$accepts = $type->accepts($valueExprType, true);
+		if ($accepts->yes()) {
+			return [];
+		}
+
+		$verbosity = VerbosityLevel::getRecommendedLevelByType($type, $valueExprType);
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s (%s) does not accept value %s.',
+				$constantReflection->getDeclaringClass()->getDisplayName(),
+				$constantName,
+				$type->describe(VerbosityLevel::typeOnly()),
+				$valueExprType->describe($verbosity),
+			))->acceptsReasonsTip($accepts->reasons)->identifier('classConstant.value')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/DateTimeInstantiationRule.php b/src/Rules/DateTimeInstantiationRule.php
new file mode 100644
index 00000000..0a683179
--- /dev/null
+++ b/src/Rules/DateTimeInstantiationRule.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use DateTime;
+use PhpParser\Node;
+use PhpParser\Node\Expr\New_;
+use PHPStan\Analyser\Scope;
+use Throwable;
+use function count;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\New_>
+ */
+final class DateTimeInstantiationRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return New_::class;
+	}
+
+	/**
+	 * @param New_ $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->class instanceof Node\Name) {
+			return [];
+		}
+
+		$lowerClassName = strtolower((string) $node->class);
+		if (
+			count($node->getArgs()) === 0
+			|| !in_array($lowerClassName, ['datetime', 'datetimeimmutable'], true)
+		) {
+			return [];
+		}
+
+		$arg = $scope->getType($node->getArgs()[0]->value);
+		$errors = [];
+
+		foreach ($arg->getConstantStrings() as $constantString) {
+			$dateString = $constantString->getValue();
+			try {
+				new DateTime($dateString);
+			} catch (Throwable) {
+				// an exception is thrown for errors only but we want to catch warnings too
+			}
+			$lastErrors = DateTime::getLastErrors();
+			if ($lastErrors === false) {
+				continue;
+			}
+
+			foreach ($lastErrors['errors'] as $error) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Instantiating %s with %s produces an error: %s',
+					$lowerClassName === 'datetime' ? 'DateTime' : 'DateTimeImmutable',
+					$dateString,
+					$error,
+				))->identifier(sprintf('new.%s', $lowerClassName === 'datetime' ? 'dateTime' : 'dateTimeImmutable'))->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/CallToConstructorStatementWithoutImpurePointsRule.php b/src/Rules/DeadCode/CallToConstructorStatementWithoutImpurePointsRule.php
new file mode 100644
index 00000000..90f78d7b
--- /dev/null
+++ b/src/Rules/DeadCode/CallToConstructorStatementWithoutImpurePointsRule.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class CallToConstructorStatementWithoutImpurePointsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classesWithConstructors = [];
+		foreach ($node->get(ConstructorWithoutImpurePointsCollector::class) as [$class]) {
+			$classesWithConstructors[strtolower($class)] = $class;
+		}
+
+		$errors = [];
+		foreach ($node->get(PossiblyPureNewCollector::class) as $filePath => $data) {
+			foreach ($data as [$class, $line]) {
+				$lowerClass = strtolower($class);
+				if (!array_key_exists($lowerClass, $classesWithConstructors)) {
+					continue;
+				}
+
+				$originalClassName = $classesWithConstructors[$lowerClass];
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Call to new %s() on a separate line has no effect.',
+					$originalClassName,
+				))->file($filePath)
+					->line($line)
+					->identifier('new.resultUnused')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/CallToFunctionStatementWithoutImpurePointsRule.php b/src/Rules/DeadCode/CallToFunctionStatementWithoutImpurePointsRule.php
new file mode 100644
index 00000000..86c60583
--- /dev/null
+++ b/src/Rules/DeadCode/CallToFunctionStatementWithoutImpurePointsRule.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class CallToFunctionStatementWithoutImpurePointsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functions = [];
+		foreach ($node->get(FunctionWithoutImpurePointsCollector::class) as [$functionName]) {
+			$functions[strtolower($functionName)] = $functionName;
+		}
+
+		$errors = [];
+		foreach ($node->get(PossiblyPureFuncCallCollector::class) as $filePath => $data) {
+			foreach ($data as [$func, $line]) {
+				$lowerFunc = strtolower($func);
+				if (!array_key_exists($lowerFunc, $functions)) {
+					continue;
+				}
+
+				$originalFunctionName = $functions[$lowerFunc];
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Call to function %s() on a separate line has no effect.',
+					$originalFunctionName,
+				))->file($filePath)
+					->line($line)
+					->identifier('function.resultUnused')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/CallToMethodStatementWithoutImpurePointsRule.php b/src/Rules/DeadCode/CallToMethodStatementWithoutImpurePointsRule.php
new file mode 100644
index 00000000..8de2cde4
--- /dev/null
+++ b/src/Rules/DeadCode/CallToMethodStatementWithoutImpurePointsRule.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class CallToMethodStatementWithoutImpurePointsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methods = [];
+		foreach ($node->get(MethodWithoutImpurePointsCollector::class) as $collected) {
+			foreach ($collected as [$className, $methodName, $classDisplayName]) {
+				$className = strtolower($className);
+
+				if (!array_key_exists($className, $methods)) {
+					$methods[$className] = [];
+				}
+				$methods[$className][strtolower($methodName)] = $classDisplayName . '::' . $methodName;
+			}
+		}
+
+		$errors = [];
+		foreach ($node->get(PossiblyPureMethodCallCollector::class) as $filePath => $data) {
+			foreach ($data as [$classNames, $method, $line]) {
+				$originalMethodName = null;
+				foreach ($classNames as $className) {
+					$className = strtolower($className);
+
+					if (!array_key_exists($className, $methods)) {
+						continue 2;
+					}
+
+					$lowerMethod = strtolower($method);
+					if (!array_key_exists($lowerMethod, $methods[$className])) {
+						continue 2;
+					}
+
+					$originalMethodName = $methods[$className][$lowerMethod];
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Call to method %s() on a separate line has no effect.',
+					$originalMethodName,
+				))->file($filePath)
+					->line($line)
+					->identifier('method.resultUnused')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/CallToStaticMethodStatementWithoutImpurePointsRule.php b/src/Rules/DeadCode/CallToStaticMethodStatementWithoutImpurePointsRule.php
new file mode 100644
index 00000000..e6ad104a
--- /dev/null
+++ b/src/Rules/DeadCode/CallToStaticMethodStatementWithoutImpurePointsRule.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class CallToStaticMethodStatementWithoutImpurePointsRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methods = [];
+		foreach ($node->get(MethodWithoutImpurePointsCollector::class) as $collected) {
+			foreach ($collected as [$className, $methodName, $classDisplayName]) {
+				$lowerClassName = strtolower($className);
+
+				if (!array_key_exists($lowerClassName, $methods)) {
+					$methods[$lowerClassName] = [];
+				}
+				$methods[$lowerClassName][strtolower($methodName)] = $classDisplayName . '::' . $methodName;
+			}
+		}
+
+		$errors = [];
+		foreach ($node->get(PossiblyPureStaticCallCollector::class) as $filePath => $data) {
+			foreach ($data as [$className, $method, $line]) {
+				$lowerClassName = strtolower($className);
+
+				if (!array_key_exists($lowerClassName, $methods)) {
+					continue;
+				}
+
+				$lowerMethod = strtolower($method);
+				if (!array_key_exists($lowerMethod, $methods[$lowerClassName])) {
+					continue;
+				}
+
+				$originalMethodName = $methods[$lowerClassName][$lowerMethod];
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Call to %s() on a separate line has no effect.',
+					$originalMethodName,
+				))->file($filePath)
+					->line($line)
+					->identifier('staticMethod.resultUnused')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/ConstructorWithoutImpurePointsCollector.php b/src/Rules/DeadCode/ConstructorWithoutImpurePointsCollector.php
new file mode 100644
index 00000000..1a377b60
--- /dev/null
+++ b/src/Rules/DeadCode/ConstructorWithoutImpurePointsCollector.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use PHPStan\Node\MethodReturnStatementsNode;
+use function count;
+
+/**
+ * @implements Collector<MethodReturnStatementsNode, string>
+ */
+final class ConstructorWithoutImpurePointsCollector implements Collector
+{
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		$method = $node->getMethodReflection();
+		if (!$method->isConstructor()) {
+			return null;
+		}
+
+		if (!$method->isPure()->maybe()) {
+			return null;
+		}
+
+		if (count($node->getImpurePoints()) !== 0) {
+			return null;
+		}
+
+		if (count($node->getStatementResult()->getThrowPoints()) !== 0) {
+			return null;
+		}
+
+		foreach ($method->getParameters() as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+
+			return null;
+		}
+
+		if (count($method->getAsserts()->getAll()) !== 0) {
+			return null;
+		}
+
+		return $method->getDeclaringClass()->getName();
+	}
+
+}
diff --git a/src/Rules/DeadCode/FunctionWithoutImpurePointsCollector.php b/src/Rules/DeadCode/FunctionWithoutImpurePointsCollector.php
new file mode 100644
index 00000000..74182ab6
--- /dev/null
+++ b/src/Rules/DeadCode/FunctionWithoutImpurePointsCollector.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use function count;
+
+/**
+ * @implements Collector<FunctionReturnStatementsNode, string>
+ */
+final class FunctionWithoutImpurePointsCollector implements Collector
+{
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		$function = $node->getFunctionReflection();
+		if (!$function->isPure()->maybe()) {
+			return null;
+		}
+		if (!$function->hasSideEffects()->maybe()) {
+			return null;
+		}
+
+		if (count($node->getImpurePoints()) !== 0) {
+			return null;
+		}
+
+		if (count($node->getStatementResult()->getThrowPoints()) !== 0) {
+			return null;
+		}
+
+		foreach ($function->getParameters() as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+
+			return null;
+		}
+
+		if (count($function->getAsserts()->getAll()) !== 0) {
+			return null;
+		}
+
+		return $function->getName();
+	}
+
+}
diff --git a/src/Rules/DeadCode/MethodWithoutImpurePointsCollector.php b/src/Rules/DeadCode/MethodWithoutImpurePointsCollector.php
new file mode 100644
index 00000000..3379e934
--- /dev/null
+++ b/src/Rules/DeadCode/MethodWithoutImpurePointsCollector.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use PHPStan\Node\MethodReturnStatementsNode;
+use function count;
+
+/**
+ * @implements Collector<MethodReturnStatementsNode, array{class-string, string, string}>
+ */
+final class MethodWithoutImpurePointsCollector implements Collector
+{
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		$method = $node->getMethodReflection();
+		if (!$method->isPure()->maybe()) {
+			return null;
+		}
+		if (!$method->hasSideEffects()->maybe()) {
+			return null;
+		}
+
+		if (count($node->getImpurePoints()) !== 0) {
+			return null;
+		}
+
+		if (count($node->getStatementResult()->getThrowPoints()) !== 0) {
+			return null;
+		}
+
+		foreach ($method->getParameters() as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+
+			return null;
+		}
+
+		if (count($method->getAsserts()->getAll()) !== 0) {
+			return null;
+		}
+
+		if ($method->isConstructor()) {
+			return null;
+		}
+
+		return [$method->getDeclaringClass()->getName(), $method->getName(), $method->getDeclaringClass()->getDisplayName()];
+	}
+
+}
diff --git a/src/Rules/DeadCode/NoopRule.php b/src/Rules/DeadCode/NoopRule.php
new file mode 100644
index 00000000..7b4f8f6d
--- /dev/null
+++ b/src/Rules/DeadCode/NoopRule.php
@@ -0,0 +1,139 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\NoopExpressionNode;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function preg_split;
+use function sprintf;
+
+/**
+ * @implements Rule<NoopExpressionNode>
+ */
+final class NoopRule implements Rule
+{
+
+	public function __construct(private ExprPrinter $exprPrinter)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NoopExpressionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$expr = $node->getOriginalExpr();
+		if ($expr instanceof Node\Expr\BinaryOp\LogicalXor) {
+			return [
+				RuleErrorBuilder::message(
+					'Unused result of "xor" operator.',
+				)->line($expr->getStartLine())
+					->tip('This operator has unexpected precedence, try disambiguating the logic with parentheses ().')
+					->identifier('logicalXor.resultUnused')
+					->build(),
+			];
+		}
+
+		if ($expr instanceof Node\Expr\BinaryOp\LogicalAnd || $expr instanceof Node\Expr\BinaryOp\LogicalOr) {
+			$identifierType = $expr instanceof Node\Expr\BinaryOp\LogicalAnd ? 'logicalAnd' : 'logicalOr';
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Unused result of "%s" operator.',
+					$expr->getOperatorSigil(),
+				))->line($expr->getStartLine())
+					->tip('This operator has unexpected precedence, try disambiguating the logic with parentheses ().')
+					->identifier(sprintf('%s.resultUnused', $identifierType))
+					->build(),
+			];
+		}
+
+		if ($node->hasAssign()) {
+			return [];
+		}
+
+		if ($expr instanceof Node\Expr\BinaryOp\BooleanAnd || $expr instanceof Node\Expr\BinaryOp\BooleanOr) {
+			$identifierType = $expr instanceof Node\Expr\BinaryOp\BooleanAnd ? 'booleanAnd' : 'booleanOr';
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Unused result of "%s" operator.',
+					$expr->getOperatorSigil(),
+				))->line($expr->getStartLine())
+					->identifier(sprintf('%s.resultUnused', $identifierType))
+					->build(),
+			];
+		}
+
+		if ($expr instanceof Node\Expr\Ternary) {
+			return [
+				RuleErrorBuilder::message('Unused result of ternary operator.')
+					->line($expr->getStartLine())
+					->identifier('ternary.resultUnused')
+					->build(),
+			];
+		}
+
+		if ($expr instanceof Node\Expr\FuncCall) {
+			if ($expr->name instanceof Node\Name) {
+				// handled by CallToFunctionStatementWithoutSideEffectsRule
+				return [];
+			}
+
+			$nameType = $scope->getType($expr->name);
+			if (!$nameType->isCallable()->yes()) {
+				return [];
+			}
+		}
+
+		if ($expr instanceof Node\Expr\New_ && $expr->class instanceof Node\Name) {
+			// handled by CallToConstructorStatementWithoutSideEffectsRule
+			return [];
+		}
+
+		if (
+			$expr instanceof Node\Expr\NullsafeMethodCall
+			|| $expr instanceof Node\Expr\MethodCall
+			|| $expr instanceof Node\Expr\StaticCall
+		) {
+			// handled by *WithoutSideEffectsRule rules
+			return [];
+		}
+
+		if (
+			$expr instanceof Node\Expr\Assign
+			|| $expr instanceof Node\Expr\AssignOp
+			|| $expr instanceof Node\Expr\AssignRef
+		) {
+			return [];
+		}
+
+		if ($expr instanceof Node\Expr\Closure) {
+			return [];
+		}
+
+		$exprString = $this->exprPrinter->printExpr($expr);
+		$exprStringLines = preg_split('~\R~', $exprString, 2);
+		if ($exprStringLines !== false && count($exprStringLines) > 1) {
+			$exprString = $exprStringLines[0] . '…';
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Expression "%s" on a separate line does not do anything.',
+				$exprString,
+			))->line($expr->getStartLine())
+				->identifier('expr.resultUnused')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/DeadCode/PossiblyPureFuncCallCollector.php b/src/Rules/DeadCode/PossiblyPureFuncCallCollector.php
new file mode 100644
index 00000000..b1f31ff6
--- /dev/null
+++ b/src/Rules/DeadCode/PossiblyPureFuncCallCollector.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Expression;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use PHPStan\Reflection\ReflectionProvider;
+
+/**
+ * @implements Collector<Node\Stmt\Expression, array{string, int}>
+ */
+final class PossiblyPureFuncCallCollector implements Collector
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expression::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		if (!$node->expr instanceof Node\Expr\FuncCall) {
+			return null;
+		}
+		if (!$node->expr->name instanceof Node\Name) {
+			return null;
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->expr->name, $scope)) {
+			return null;
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->expr->name, $scope);
+		if (!$functionReflection->isPure()->maybe()) {
+			return null;
+		}
+		if (!$functionReflection->hasSideEffects()->maybe()) {
+			return null;
+		}
+
+		return [$functionReflection->getName(), $node->getStartLine()];
+	}
+
+}
diff --git a/src/Rules/DeadCode/PossiblyPureMethodCallCollector.php b/src/Rules/DeadCode/PossiblyPureMethodCallCollector.php
new file mode 100644
index 00000000..a0adce06
--- /dev/null
+++ b/src/Rules/DeadCode/PossiblyPureMethodCallCollector.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Expression;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+
+/**
+ * @implements Collector<Node\Stmt\Expression, array{non-empty-list<class-string>, string, int}>
+ */
+final class PossiblyPureMethodCallCollector implements Collector
+{
+
+	public function __construct()
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expression::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		if (!$node->expr instanceof Node\Expr\MethodCall) {
+			return null;
+		}
+		if (!$node->expr->name instanceof Node\Identifier) {
+			return null;
+		}
+
+		$methodName = $node->expr->name->toString();
+		$calledOnType = $scope->getType($node->expr->var);
+		if (!$calledOnType->hasMethod($methodName)->yes()) {
+			return null;
+		}
+
+		$classNames = [];
+		$methodReflection = null;
+		foreach ($calledOnType->getObjectClassReflections() as $classReflection) {
+			if (!$classReflection->hasMethod($methodName)) {
+				return null;
+			}
+
+			$methodReflection = $classReflection->getMethod($methodName, $scope);
+			if (
+				!$methodReflection->isPrivate()
+				&& !$methodReflection->isFinal()->yes()
+				&& !$methodReflection->getDeclaringClass()->isFinal()
+			) {
+				if (!$classReflection->isFinal()) {
+					return null;
+				}
+			}
+			if (!$methodReflection->isPure()->maybe()) {
+				return null;
+			}
+			if (!$methodReflection->hasSideEffects()->maybe()) {
+				return null;
+			}
+
+			$classNames[] = $methodReflection->getDeclaringClass()->getName();
+		}
+
+		if ($methodReflection === null) {
+			return null;
+		}
+
+		return [$classNames, $methodReflection->getName(), $node->getStartLine()];
+	}
+
+}
diff --git a/src/Rules/DeadCode/PossiblyPureNewCollector.php b/src/Rules/DeadCode/PossiblyPureNewCollector.php
new file mode 100644
index 00000000..7efa11c5
--- /dev/null
+++ b/src/Rules/DeadCode/PossiblyPureNewCollector.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Expression;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use PHPStan\Reflection\ReflectionProvider;
+use function strtolower;
+
+/**
+ * @implements Collector<Expression, array{string, int}>
+ */
+final class PossiblyPureNewCollector implements Collector
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expression::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		if (!$node->expr instanceof Node\Expr\New_) {
+			return null;
+		}
+
+		if (!$node->expr->class instanceof Node\Name) {
+			return null;
+		}
+
+		$className = $node->expr->class->toString();
+
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return null;
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!$classReflection->hasConstructor()) {
+			return null;
+		}
+
+		$constructor = $classReflection->getConstructor();
+		if (strtolower($constructor->getName()) !== '__construct') {
+			return null;
+		}
+
+		if (!$constructor->isPure()->maybe()) {
+			return null;
+		}
+
+		return [$constructor->getDeclaringClass()->getName(), $node->getStartLine()];
+	}
+
+}
diff --git a/src/Rules/DeadCode/PossiblyPureStaticCallCollector.php b/src/Rules/DeadCode/PossiblyPureStaticCallCollector.php
new file mode 100644
index 00000000..68be003d
--- /dev/null
+++ b/src/Rules/DeadCode/PossiblyPureStaticCallCollector.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Expression;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+
+/**
+ * @implements Collector<Node\Stmt\Expression, array{class-string, string, int}>
+ */
+final class PossiblyPureStaticCallCollector implements Collector
+{
+
+	public function __construct()
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expression::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		if (!$node->expr instanceof Node\Expr\StaticCall) {
+			return null;
+		}
+		if (!$node->expr->name instanceof Node\Identifier) {
+			return null;
+		}
+
+		if (!$node->expr->class instanceof Node\Name) {
+			return null;
+		}
+
+		$methodName = $node->expr->name->toString();
+		$calledOnType = $scope->resolveTypeByName($node->expr->class);
+		$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
+
+		if ($methodReflection === null) {
+			return null;
+		}
+		if (!$methodReflection->isPure()->maybe()) {
+			return null;
+		}
+		if (!$methodReflection->hasSideEffects()->maybe()) {
+			return null;
+		}
+
+		return [$methodReflection->getDeclaringClass()->getName(), $methodReflection->getName(), $node->getStartLine()];
+	}
+
+}
diff --git a/src/Rules/DeadCode/UnreachableStatementRule.php b/src/Rules/DeadCode/UnreachableStatementRule.php
new file mode 100644
index 00000000..aa5df90e
--- /dev/null
+++ b/src/Rules/DeadCode/UnreachableStatementRule.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\UnreachableStatementNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<UnreachableStatementNode>
+ */
+final class UnreachableStatementRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return UnreachableStatementNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return [
+			RuleErrorBuilder::message('Unreachable statement - code above always terminates.')
+				->identifier('deadCode.unreachable')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/DeadCode/UnusedPrivateConstantRule.php b/src/Rules/DeadCode/UnusedPrivateConstantRule.php
new file mode 100644
index 00000000..9f7dd21f
--- /dev/null
+++ b/src/Rules/DeadCode/UnusedPrivateConstantRule.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassConstantsNode;
+use PHPStan\Rules\Constants\AlwaysUsedClassConstantsExtensionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassConstantsNode>
+ */
+final class UnusedPrivateConstantRule implements Rule
+{
+
+	public function __construct(private AlwaysUsedClassConstantsExtensionProvider $extensionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassConstantsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getClass() instanceof Node\Stmt\Class_ && !$node->getClass() instanceof Node\Stmt\Enum_) {
+			return [];
+		}
+
+		$classReflection = $node->getClassReflection();
+		$classType = new ObjectType($classReflection->getName(), null, $classReflection);
+
+		$constants = [];
+		foreach ($node->getConstants() as $constant) {
+			if (!$constant->isPrivate()) {
+				continue;
+			}
+
+			foreach ($constant->consts as $const) {
+				$constantName = $const->name->toString();
+
+				$constantReflection = $classReflection->getConstant($constantName);
+				foreach ($this->extensionProvider->getExtensions() as $extension) {
+					if ($extension->isAlwaysUsed($constantReflection)) {
+						continue 2;
+					}
+				}
+
+				$constants[$constantName] = $const;
+			}
+		}
+
+		foreach ($node->getFetches() as $fetch) {
+			$fetchNode = $fetch->getNode();
+
+			$fetchScope = $fetch->getScope();
+			if ($fetchNode->class instanceof Node\Name) {
+				$fetchedOnClass = $fetchScope->resolveTypeByName($fetchNode->class);
+			} else {
+				$fetchedOnClass = $fetchScope->getType($fetchNode->class);
+			}
+
+			if (!$fetchNode->name instanceof Node\Identifier) {
+				if (!$classType->isSuperTypeOf($fetchedOnClass)->no()) {
+					$constants = [];
+					break;
+				}
+				continue;
+			}
+
+			$constantReflection = $fetchScope->getConstantReflection($fetchedOnClass, $fetchNode->name->toString());
+			if ($constantReflection === null) {
+				if (!$classType->isSuperTypeOf($fetchedOnClass)->no()) {
+					unset($constants[$fetchNode->name->toString()]);
+				}
+				continue;
+			}
+
+			if ($constantReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+				if (!$classType->isSuperTypeOf($fetchedOnClass)->no()) {
+					unset($constants[$fetchNode->name->toString()]);
+				}
+				continue;
+			}
+
+			unset($constants[$fetchNode->name->toString()]);
+		}
+
+		$errors = [];
+		foreach ($constants as $constantName => $constantNode) {
+			$errors[] = RuleErrorBuilder::message(sprintf('Constant %s::%s is unused.', $classReflection->getDisplayName(), $constantName))
+				->line($constantNode->getStartLine())
+				->identifier('classConstant.unused')
+				->tip(sprintf('See: %s', 'https://phpstan.org/developing-extensions/always-used-class-constants'))
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/UnusedPrivateMethodRule.php b/src/Rules/DeadCode/UnusedPrivateMethodRule.php
new file mode 100644
index 00000000..30e300be
--- /dev/null
+++ b/src/Rules/DeadCode/UnusedPrivateMethodRule.php
@@ -0,0 +1,196 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Identifier;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassMethodsNode;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Methods\AlwaysUsedMethodExtensionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ObjectType;
+use function array_map;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<ClassMethodsNode>
+ */
+final class UnusedPrivateMethodRule implements Rule
+{
+
+	public function __construct(private AlwaysUsedMethodExtensionProvider $extensionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassMethodsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getClass() instanceof Node\Stmt\Class_ && !$node->getClass() instanceof Node\Stmt\Enum_) {
+			return [];
+		}
+		$classReflection = $node->getClassReflection();
+		$classType = new ObjectType($classReflection->getName(), null, $classReflection);
+		$constructor = null;
+		if ($classReflection->hasConstructor()) {
+			$constructor = $classReflection->getConstructor();
+		}
+
+		$methods = [];
+		foreach ($node->getMethods() as $method) {
+			if (!$method->getNode()->isPrivate()) {
+				continue;
+			}
+			if ($method->isDeclaredInTrait()) {
+				continue;
+			}
+			$methodName = $method->getNode()->name->toString();
+			if ($constructor !== null && $constructor->getName() === $methodName) {
+				continue;
+			}
+			if (strtolower($methodName) === '__clone') {
+				continue;
+			}
+
+			$methodReflection = $classReflection->getNativeMethod($methodName);
+			foreach ($this->extensionProvider->getExtensions() as $extension) {
+				if ($extension->isAlwaysUsed($methodReflection)) {
+					continue 2;
+				}
+			}
+
+			$methods[strtolower($methodName)] = $method;
+		}
+
+		$arrayCalls = [];
+		foreach ($node->getMethodCalls() as $methodCall) {
+			$methodCallNode = $methodCall->getNode();
+			if ($methodCallNode instanceof Node\Expr\Array_) {
+				$arrayCalls[] = $methodCall;
+				continue;
+			}
+			$callScope = $methodCall->getScope();
+			if ($methodCallNode->name instanceof Identifier) {
+				$methodNames = [$methodCallNode->name->toString()];
+			} else {
+				$methodNameType = $callScope->getType($methodCallNode->name);
+				$strings = $methodNameType->getConstantStrings();
+				if (count($strings) === 0) {
+					// handle subtractions of a dynamic method call
+					foreach ($methods as $lowerMethodName => $method) {
+						if ((new ConstantStringType($method->getNode()->name->toString()))->isSuperTypeOf($methodNameType)->no()) {
+							continue;
+						}
+
+						unset($methods[$lowerMethodName]);
+					}
+
+					continue;
+				}
+
+				$methodNames = array_map(static fn (ConstantStringType $type): string => $type->getValue(), $strings);
+			}
+
+			if ($methodCallNode instanceof Node\Expr\MethodCall) {
+				$calledOnType = $callScope->getType($methodCallNode->var);
+			} else {
+				if ($methodCallNode->class instanceof Node\Name) {
+					$calledOnType = $callScope->resolveTypeByName($methodCallNode->class);
+				} else {
+					$calledOnType = $callScope->getType($methodCallNode->class);
+				}
+			}
+
+			$inMethod = $callScope->getFunction();
+			if (!$inMethod instanceof MethodReflection) {
+				continue;
+			}
+
+			foreach ($methodNames as $methodName) {
+				$methodReflection = $callScope->getMethodReflection($calledOnType, $methodName);
+				if ($methodReflection === null) {
+					if (!$classType->isSuperTypeOf($calledOnType)->no()) {
+						unset($methods[strtolower($methodName)]);
+					}
+					continue;
+				}
+				if ($methodReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+					if (!$classType->isSuperTypeOf($calledOnType)->no()) {
+						unset($methods[strtolower($methodName)]);
+					}
+					continue;
+				}
+				if ($inMethod->getName() === $methodName) {
+					continue;
+				}
+				unset($methods[strtolower($methodName)]);
+			}
+		}
+
+		if (count($methods) > 0) {
+			foreach ($arrayCalls as $arrayCall) {
+				/** @var Node\Expr\Array_ $array */
+				$array = $arrayCall->getNode();
+				$arrayScope = $arrayCall->getScope();
+				$arrayType = $arrayScope->getType($array);
+				if (!$arrayType->isCallable()->yes()) {
+					continue;
+				}
+				foreach ($arrayType->getConstantArrays() as $constantArray) {
+					foreach ($constantArray->findTypeAndMethodNames() as $typeAndMethod) {
+						if ($typeAndMethod->isUnknown()) {
+							return [];
+						}
+						if (!$typeAndMethod->getCertainty()->yes()) {
+							return [];
+						}
+
+						$calledOnType = $typeAndMethod->getType();
+						$methodReflection = $arrayScope->getMethodReflection($calledOnType, $typeAndMethod->getMethod());
+						if ($methodReflection === null) {
+							continue;
+						}
+
+						if ($methodReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+							continue;
+						}
+
+						$inMethod = $arrayScope->getFunction();
+						if (!$inMethod instanceof MethodReflection) {
+							continue;
+						}
+						if ($inMethod->getName() === $typeAndMethod->getMethod()) {
+							continue;
+						}
+						unset($methods[strtolower($typeAndMethod->getMethod())]);
+					}
+				}
+			}
+		}
+
+		$errors = [];
+		foreach ($methods as $method) {
+			$originalMethodName = $method->getNode()->name->toString();
+			$methodType = 'Method';
+			if ($method->getNode()->isStatic()) {
+				$methodType = 'Static method';
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf('%s %s::%s() is unused.', $methodType, $classReflection->getDisplayName(), $originalMethodName))
+				->line($method->getNode()->getStartLine())
+				->identifier('method.unused')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/DeadCode/UnusedPrivatePropertyRule.php b/src/Rules/DeadCode/UnusedPrivatePropertyRule.php
new file mode 100644
index 00000000..b22bf4fb
--- /dev/null
+++ b/src/Rules/DeadCode/UnusedPrivatePropertyRule.php
@@ -0,0 +1,240 @@
+<?php 
+
+namespace PHPStan\Rules\DeadCode;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Node\Property\PropertyRead;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ObjectType;
+use function array_key_exists;
+use function array_map;
+use function count;
+use function is_string;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class UnusedPrivatePropertyRule implements Rule
+{
+
+	/**
+	 * @param string[] $alwaysWrittenTags
+	 * @param string[] $alwaysReadTags
+	 */
+	public function __construct(
+		private ReadWritePropertiesExtensionProvider $extensionProvider,
+		private array $alwaysWrittenTags,
+		private array $alwaysReadTags,
+		private bool $checkUninitializedProperties,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getClass() instanceof Node\Stmt\Class_) {
+			return [];
+		}
+		$classReflection = $node->getClassReflection();
+		$classType = new ObjectType($classReflection->getName(), null, $classReflection);
+		$properties = [];
+		foreach ($node->getProperties() as $property) {
+			if (!$property->isPrivate()) {
+				continue;
+			}
+			if ($property->isDeclaredInTrait()) {
+				continue;
+			}
+
+			$alwaysRead = false;
+			$alwaysWritten = false;
+			if ($property->getPhpDoc() !== null) {
+				$text = $property->getPhpDoc();
+				foreach ($this->alwaysReadTags as $tag) {
+					if (!str_contains($text, $tag)) {
+						continue;
+					}
+
+					$alwaysRead = true;
+					break;
+				}
+
+				foreach ($this->alwaysWrittenTags as $tag) {
+					if (!str_contains($text, $tag)) {
+						continue;
+					}
+
+					$alwaysWritten = true;
+					break;
+				}
+			}
+
+			$propertyName = $property->getName();
+			if (!$alwaysRead || !$alwaysWritten) {
+				if (!$classReflection->hasNativeProperty($propertyName)) {
+					continue;
+				}
+
+				$propertyReflection = $classReflection->getNativeProperty($propertyName);
+
+				foreach ($this->extensionProvider->getExtensions() as $extension) {
+					if ($alwaysRead && $alwaysWritten) {
+						break;
+					}
+					if (!$alwaysRead && $extension->isAlwaysRead($propertyReflection, $propertyName)) {
+						$alwaysRead = true;
+					}
+					if ($alwaysWritten || !$extension->isAlwaysWritten($propertyReflection, $propertyName)) {
+						continue;
+					}
+
+					$alwaysWritten = true;
+				}
+			}
+
+			$read = $alwaysRead;
+			$written = $alwaysWritten || $property->getDefault() !== null;
+			$properties[$propertyName] = [
+				'read' => $read,
+				'written' => $written,
+				'node' => $property,
+			];
+		}
+
+		foreach ($node->getPropertyUsages() as $usage) {
+			$usageScope = $usage->getScope();
+			$fetch = $usage->getFetch();
+			if ($fetch->name instanceof Node\Identifier) {
+				$propertyName = $fetch->name->toString();
+				$propertyNames = [$propertyName];
+				if (
+					$usageScope->getFunction() !== null
+					&& $fetch instanceof Node\Expr\PropertyFetch
+					&& $fetch->var instanceof Node\Expr\Variable
+					&& is_string($fetch->var->name)
+					&& $fetch->var->name === 'this'
+				) {
+					$methodReflection = $usageScope->getFunction();
+					if (
+						$methodReflection instanceof PhpMethodFromParserNodeReflection
+						&& $methodReflection->isPropertyHook()
+						&& $methodReflection->getHookedPropertyName() === $propertyName
+					) {
+						continue;
+					}
+				}
+			} else {
+				$propertyNameType = $usageScope->getType($fetch->name);
+				$strings = $propertyNameType->getConstantStrings();
+				if (count($strings) === 0) {
+					// handle subtractions of a dynamic property fetch
+					foreach ($properties as $propertyName => $data) {
+						if ((new ConstantStringType($propertyName))->isSuperTypeOf($propertyNameType)->no()) {
+							continue;
+						}
+
+						unset($properties[$propertyName]);
+					}
+
+					continue;
+				}
+
+				$propertyNames = array_map(static fn (ConstantStringType $type): string => $type->getValue(), $strings);
+			}
+
+			if ($fetch instanceof Node\Expr\PropertyFetch) {
+				$fetchedOnType = $usageScope->getType($fetch->var);
+			} else {
+				if ($fetch->class instanceof Node\Name) {
+					$fetchedOnType = $usageScope->resolveTypeByName($fetch->class);
+				} else {
+					$fetchedOnType = $usageScope->getType($fetch->class);
+				}
+			}
+
+			foreach ($propertyNames as $propertyName) {
+				if (!array_key_exists($propertyName, $properties)) {
+					continue;
+				}
+				$propertyReflection = $usageScope->getPropertyReflection($fetchedOnType, $propertyName);
+				if ($propertyReflection === null) {
+					if (!$classType->isSuperTypeOf($fetchedOnType)->no()) {
+						if ($usage instanceof PropertyRead) {
+							$properties[$propertyName]['read'] = true;
+						} else {
+							$properties[$propertyName]['written'] = true;
+						}
+					}
+					continue;
+				}
+				if ($propertyReflection->getDeclaringClass()->getName() !== $classReflection->getName()) {
+					if (!$classType->isSuperTypeOf($fetchedOnType)->no()) {
+						if ($usage instanceof PropertyRead) {
+							$properties[$propertyName]['read'] = true;
+						} else {
+							$properties[$propertyName]['written'] = true;
+						}
+					}
+					continue;
+				}
+
+				if ($usage instanceof PropertyRead) {
+					$properties[$propertyName]['read'] = true;
+				} else {
+					$properties[$propertyName]['written'] = true;
+				}
+			}
+		}
+
+		[$uninitializedProperties] = $node->getUninitializedProperties($scope, []);
+
+		$errors = [];
+		foreach ($properties as $name => $data) {
+			$propertyNode = $data['node'];
+			if ($propertyNode->isStatic()) {
+				$propertyName = sprintf('Static property %s::$%s', $classReflection->getDisplayName(), $name);
+			} else {
+				$propertyName = sprintf('Property %s::$%s', $classReflection->getDisplayName(), $name);
+			}
+			$tip = sprintf('See: %s', 'https://phpstan.org/developing-extensions/always-read-written-properties');
+			if (!$data['read']) {
+				if (!$data['written']) {
+					$errors[] = RuleErrorBuilder::message(sprintf('%s is unused.', $propertyName))
+						->line($propertyNode->getStartLine())
+						->tip($tip)
+						->identifier('property.unused')
+						->build();
+				} else {
+					$errors[] = RuleErrorBuilder::message(sprintf('%s is never read, only written.', $propertyName))
+						->line($propertyNode->getStartLine())
+						->identifier('property.onlyWritten')
+						->tip($tip)
+						->build();
+				}
+			} elseif (!$data['written'] && (!array_key_exists($name, $uninitializedProperties) || !$this->checkUninitializedProperties)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('%s is never written, only read.', $propertyName))
+					->line($propertyNode->getStartLine())
+					->identifier('property.onlyRead')
+					->tip($tip)
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Debug/DebugScopeRule.php b/src/Rules/Debug/DebugScopeRule.php
new file mode 100644
index 00000000..19d7144b
--- /dev/null
+++ b/src/Rules/Debug/DebugScopeRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Debug;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function implode;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class DebugScopeRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		$functionName = $this->reflectionProvider->resolveFunctionName($node->name, $scope);
+		if ($functionName === null) {
+			return [];
+		}
+
+		if (strtolower($functionName) !== 'phpstan\debugscope') {
+			return [];
+		}
+
+		if (!$scope instanceof MutatingScope) {
+			return [];
+		}
+
+		$parts = [];
+		foreach ($scope->debug() as $key => $row) {
+			$parts[] = sprintf('%s: %s', $key, $row);
+		}
+
+		if (count($parts) === 0) {
+			$parts[] = 'Scope is empty';
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				implode("\n", $parts),
+			)->nonIgnorable()->identifier('phpstan.debugScope')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Debug/DumpPhpDocTypeRule.php b/src/Rules/Debug/DumpPhpDocTypeRule.php
new file mode 100644
index 00000000..ff550638
--- /dev/null
+++ b/src/Rules/Debug/DumpPhpDocTypeRule.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Rules\Debug;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\PhpDocParser\Printer\Printer;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class DumpPhpDocTypeRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider, private Printer $printer)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		$functionName = $this->reflectionProvider->resolveFunctionName($node->name, $scope);
+		if ($functionName === null) {
+			return [];
+		}
+
+		if (strtolower($functionName) !== 'phpstan\dumpphpdoctype') {
+			return [];
+		}
+
+		if (count($node->getArgs()) === 0) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf(
+					'Dumped type: %s',
+					$this->printer->print($scope->getType($node->getArgs()[0]->value)->toPhpDocNode()),
+				),
+			)->nonIgnorable()->identifier('phpstan.dumpPhpDocType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Debug/DumpTypeRule.php b/src/Rules/Debug/DumpTypeRule.php
new file mode 100644
index 00000000..36e1e645
--- /dev/null
+++ b/src/Rules/Debug/DumpTypeRule.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Rules\Debug;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class DumpTypeRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		$functionName = $this->reflectionProvider->resolveFunctionName($node->name, $scope);
+		if ($functionName === null) {
+			return [];
+		}
+
+		if (strtolower($functionName) !== 'phpstan\dumptype') {
+			return [];
+		}
+
+		if (count($node->getArgs()) === 0) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf(
+					'Dumped type: %s',
+					$scope->getType($node->getArgs()[0]->value)->describe(VerbosityLevel::precise()),
+				),
+			)->nonIgnorable()->identifier('phpstan.dumpType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Debug/FileAssertRule.php b/src/Rules/Debug/FileAssertRule.php
new file mode 100644
index 00000000..0d62430d
--- /dev/null
+++ b/src/Rules/Debug/FileAssertRule.php
@@ -0,0 +1,203 @@
+<?php 
+
+namespace PHPStan\Rules\Debug;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class FileAssertRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$function = $this->reflectionProvider->getFunction($node->name, $scope);
+		if ($function->getName() === 'PHPStan\\Testing\\assertType') {
+			return $this->processAssertType($node->getArgs(), $scope);
+		}
+
+		if ($function->getName() === 'PHPStan\\Testing\\assertNativeType') {
+			return $this->processAssertNativeType($node->getArgs(), $scope);
+		}
+
+		if ($function->getName() === 'PHPStan\\Testing\\assertVariableCertainty') {
+			return $this->processAssertVariableCertainty($node->getArgs(), $scope);
+		}
+
+		return [];
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processAssertType(array $args, Scope $scope): array
+	{
+		if (count($args) !== 2) {
+			return [];
+		}
+
+		$expectedTypeStrings = $scope->getType($args[0]->value)->getConstantStrings();
+		if (count($expectedTypeStrings) !== 1) {
+			return [
+				RuleErrorBuilder::message('Expected type must be a literal string.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		$expressionType = $scope->getType($args[1]->value)->describe(VerbosityLevel::precise());
+		if ($expectedTypeStrings[0]->getValue() === $expressionType) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Expected type %s, actual: %s', $expectedTypeStrings[0]->getValue(), $expressionType))
+				->nonIgnorable()
+				->identifier('phpstan.type')
+				->build(),
+		];
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processAssertNativeType(array $args, Scope $scope): array
+	{
+		if (count($args) !== 2) {
+			return [];
+		}
+
+		$expectedTypeStrings = $scope->getNativeType($args[0]->value)->getConstantStrings();
+		if (count($expectedTypeStrings) !== 1) {
+			return [
+				RuleErrorBuilder::message('Expected native type must be a literal string.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		$expressionType = $scope->getNativeType($args[1]->value)->describe(VerbosityLevel::precise());
+		if ($expectedTypeStrings[0]->getValue() === $expressionType) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Expected native type %s, actual: %s', $expectedTypeStrings[0]->getValue(), $expressionType))
+				->nonIgnorable()
+				->identifier('phpstan.nativeType')
+				->build(),
+		];
+	}
+
+	/**
+	 * @param Node\Arg[] $args
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processAssertVariableCertainty(array $args, Scope $scope): array
+	{
+		if (count($args) !== 2) {
+			return [];
+		}
+
+		$certainty = $args[0]->value;
+		if (!$certainty instanceof StaticCall) {
+			return [
+				RuleErrorBuilder::message('First argument of %s() must be TrinaryLogic call')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+		if (!$certainty->class instanceof Node\Name) {
+			return [
+				RuleErrorBuilder::message('Invalid TrinaryLogic call.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		if ($certainty->class->toString() !== 'PHPStan\\TrinaryLogic') {
+			return [
+				RuleErrorBuilder::message('Invalid TrinaryLogic call.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		if (!$certainty->name instanceof Node\Identifier) {
+			return [
+				RuleErrorBuilder::message('Invalid TrinaryLogic call.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		// @phpstan-ignore staticMethod.dynamicName
+		$expectedCertaintyValue = TrinaryLogic::{$certainty->name->toString()}();
+		$variable = $args[1]->value;
+		if ($variable instanceof Node\Expr\Variable && is_string($variable->name)) {
+			$actualCertaintyValue = $scope->hasVariableType($variable->name);
+			$variableDescription = sprintf('variable $%s', $variable->name);
+		} elseif ($variable instanceof Node\Expr\ArrayDimFetch && $variable->dim !== null) {
+			$offset = $scope->getType($variable->dim);
+			$actualCertaintyValue = $scope->getType($variable->var)->hasOffsetValueType($offset);
+			$variableDescription = sprintf('offset %s', $offset->describe(VerbosityLevel::precise()));
+		} else {
+			return [
+				RuleErrorBuilder::message('Invalid assertVariableCertainty call.')
+					->nonIgnorable()
+					->identifier('phpstan.unknownExpectation')
+					->build(),
+			];
+		}
+
+		if ($expectedCertaintyValue->equals($actualCertaintyValue)) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Expected %s certainty %s, actual: %s', $variableDescription, $expectedCertaintyValue->describe(), $actualCertaintyValue->describe()))
+				->nonIgnorable()
+				->identifier('phpstan.variable')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/DirectRegistry.php b/src/Rules/DirectRegistry.php
new file mode 100644
index 00000000..a8ea6114
--- /dev/null
+++ b/src/Rules/DirectRegistry.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use function class_implements;
+use function class_parents;
+
+final class DirectRegistry implements Registry
+{
+
+	/** @var Rule[][] */
+	private array $rules = [];
+
+	/** @var Rule[][] */
+	private array $cache = [];
+
+	/**
+	 * @param Rule[] $rules
+	 */
+	public function __construct(array $rules)
+	{
+		foreach ($rules as $rule) {
+			$this->rules[$rule->getNodeType()][] = $rule;
+		}
+	}
+
+	/**
+	 * @template TNodeType of Node
+	 * @param class-string<TNodeType> $nodeType
+	 * @return array<Rule<TNodeType>>
+	 */
+	public function getRules(string $nodeType): array
+	{
+		if (!isset($this->cache[$nodeType])) {
+			$parentNodeTypes = [$nodeType] + class_parents($nodeType) + class_implements($nodeType);
+
+			$rules = [];
+			foreach ($parentNodeTypes as $parentNodeType) {
+				foreach ($this->rules[$parentNodeType] ?? [] as $rule) {
+					$rules[] = $rule;
+				}
+			}
+
+			$this->cache[$nodeType] = $rules;
+		}
+
+		/**
+		 * @var array<Rule<TNodeType>> $selectedRules
+		 */
+		$selectedRules = $this->cache[$nodeType];
+
+		return $selectedRules;
+	}
+
+}
diff --git a/src/Rules/EnumCases/EnumCaseAttributesRule.php b/src/Rules/EnumCases/EnumCaseAttributesRule.php
new file mode 100644
index 00000000..becc81b7
--- /dev/null
+++ b/src/Rules/EnumCases/EnumCaseAttributesRule.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\EnumCases;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\EnumCase>
+ */
+final class EnumCaseAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\EnumCase::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->attrGroups,
+			Attribute::TARGET_CLASS_CONSTANT,
+			'class constant',
+		);
+	}
+
+}
diff --git a/src/Rules/Exceptions/CatchWithUnthrownExceptionRule.php b/src/Rules/Exceptions/CatchWithUnthrownExceptionRule.php
new file mode 100644
index 00000000..b409bdd7
--- /dev/null
+++ b/src/Rules/Exceptions/CatchWithUnthrownExceptionRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CatchWithUnthrownExceptionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<CatchWithUnthrownExceptionNode>
+ */
+final class CatchWithUnthrownExceptionRule implements Rule
+{
+
+	public function __construct(
+		private ExceptionTypeResolver $exceptionTypeResolver,
+		private bool $reportUncheckedExceptionDeadCatch,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return CatchWithUnthrownExceptionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->getCaughtType() instanceof NeverType) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Dead catch - %s is already caught above.', $node->getOriginalCaughtType()->describe(VerbosityLevel::typeOnly())),
+				)
+					->line($node->getStartLine())
+					->identifier('catch.alreadyCaught')
+					->build(),
+			];
+		}
+
+		if (!$this->reportUncheckedExceptionDeadCatch) {
+			$isCheckedException = false;
+			foreach ($node->getCaughtType()->getObjectClassNames() as $objectClassName) {
+				if ($this->exceptionTypeResolver->isCheckedException($objectClassName, $scope)) {
+					$isCheckedException = true;
+					break;
+				}
+			}
+
+			if (!$isCheckedException) {
+				return [];
+			}
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				sprintf('Dead catch - %s is never thrown in the try block.', $node->getCaughtType()->describe(VerbosityLevel::typeOnly())),
+			)
+				->line($node->getStartLine())
+				->identifier('catch.neverThrown')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Exceptions/CaughtExceptionExistenceRule.php b/src/Rules/Exceptions/CaughtExceptionExistenceRule.php
new file mode 100644
index 00000000..631bebf3
--- /dev/null
+++ b/src/Rules/Exceptions/CaughtExceptionExistenceRule.php
@@ -0,0 +1,74 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Catch_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use Throwable;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Catch_>
+ */
+final class CaughtExceptionExistenceRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Catch_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($node->types as $class) {
+			$className = (string) $class;
+			if (!$this->reflectionProvider->hasClass($className)) {
+				if ($scope->isInClassExists($className)) {
+					continue;
+				}
+				$errors[] = RuleErrorBuilder::message(sprintf('Caught class %s not found.', $className))
+					->line($class->getStartLine())
+					->identifier('class.notFound')
+					->discoveringSymbolsTip()
+					->build();
+				continue;
+			}
+
+			$classReflection = $this->reflectionProvider->getClass($className);
+			if (!$classReflection->isInterface() && !$classReflection->implementsInterface(Throwable::class)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Caught class %s is not an exception.', $classReflection->getDisplayName()))
+					->line($class->getStartLine())
+					->identifier('catch.notThrowable')
+					->build();
+			}
+
+			$errors = array_merge(
+				$errors,
+				$this->classCheck->checkClassNames(
+					[new ClassNameNodePair($className, $class)],
+					$this->checkClassCaseSensitivity,
+				),
+			);
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/DefaultExceptionTypeResolver.php b/src/Rules/Exceptions/DefaultExceptionTypeResolver.php
new file mode 100644
index 00000000..07fdba36
--- /dev/null
+++ b/src/Rules/Exceptions/DefaultExceptionTypeResolver.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use function count;
+
+/**
+ * @api
+ */
+final class DefaultExceptionTypeResolver implements ExceptionTypeResolver
+{
+
+	/**
+	 * @param string[] $uncheckedExceptionRegexes
+	 * @param string[] $uncheckedExceptionClasses
+	 * @param string[] $checkedExceptionRegexes
+	 * @param string[] $checkedExceptionClasses
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private array $uncheckedExceptionRegexes,
+		private array $uncheckedExceptionClasses,
+		private array $checkedExceptionRegexes,
+		private array $checkedExceptionClasses,
+	)
+	{
+	}
+
+	public function isCheckedException(string $className, Scope $scope): bool
+	{
+		foreach ($this->uncheckedExceptionRegexes as $regex) {
+			if (Strings::match($className, $regex) !== null) {
+				return false;
+			}
+		}
+
+		foreach ($this->uncheckedExceptionClasses as $uncheckedExceptionClass) {
+			if ($className === $uncheckedExceptionClass) {
+				return false;
+			}
+		}
+
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return $this->isCheckedExceptionInternal($className);
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		foreach ($this->uncheckedExceptionClasses as $uncheckedExceptionClass) {
+			if ($classReflection->getName() === $uncheckedExceptionClass) {
+				return false;
+			}
+
+			if (!$classReflection->isSubclassOf($uncheckedExceptionClass)) {
+				continue;
+			}
+
+			return false;
+		}
+
+		return $this->isCheckedExceptionInternal($className);
+	}
+
+	private function isCheckedExceptionInternal(string $className): bool
+	{
+		foreach ($this->checkedExceptionRegexes as $regex) {
+			if (Strings::match($className, $regex) !== null) {
+				return true;
+			}
+		}
+
+		foreach ($this->checkedExceptionClasses as $checkedExceptionClass) {
+			if ($className === $checkedExceptionClass) {
+				return true;
+			}
+		}
+
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return count($this->checkedExceptionRegexes) === 0 && count($this->checkedExceptionClasses) === 0;
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		foreach ($this->checkedExceptionClasses as $checkedExceptionClass) {
+			if ($classReflection->getName() === $checkedExceptionClass) {
+				return true;
+			}
+
+			if (!$classReflection->isSubclassOf($checkedExceptionClass)) {
+				continue;
+			}
+
+			return true;
+		}
+
+		return count($this->checkedExceptionRegexes) === 0 && count($this->checkedExceptionClasses) === 0;
+	}
+
+}
diff --git a/src/Rules/Exceptions/ExceptionTypeResolver.php b/src/Rules/Exceptions/ExceptionTypeResolver.php
new file mode 100644
index 00000000..a449fdae
--- /dev/null
+++ b/src/Rules/Exceptions/ExceptionTypeResolver.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PHPStan\Analyser\Scope;
+
+/**
+ * @api
+ *
+ * This interface allows you to write custom logic that can dynamically decide
+ * whether an exception is checked or unchecked type.
+ *
+ * Because the interface accepts a Scope, you can ask about the place in the code where
+ * it's being decided - a file, a namespace or a class name.
+ *
+ * There can only be a single ExceptionTypeResolver per project, and you can register it
+ * in your configuration file like this:
+ *
+ * ```
+ *  services:
+ *      exceptionTypeResolver!:
+ *          class: PHPStan\Rules\Exceptions\ExceptionTypeResolver
+ *  ```
+ *
+ * You can also take advantage of the `PHPStan\Rules\Exceptions\DefaultExceptionTypeResolver`
+ * by injecting it into the constructor of your ExceptionTypeResolver
+ * and delegate the logic of the classes and places you don't care about.
+ *
+ * DefaultExceptionTypeResolver decides the type of the exception based on configuration
+ * parameters like `exceptions.uncheckedExceptionClasses` etc.
+ *
+ * Learn more: https://phpstan.org/blog/bring-your-exceptions-under-control
+ */
+interface ExceptionTypeResolver
+{
+
+	public function isCheckedException(string $className, Scope $scope): bool;
+
+}
diff --git a/src/Rules/Exceptions/MissingCheckedExceptionInFunctionThrowsRule.php b/src/Rules/Exceptions/MissingCheckedExceptionInFunctionThrowsRule.php
new file mode 100644
index 00000000..1cb99487
--- /dev/null
+++ b/src/Rules/Exceptions/MissingCheckedExceptionInFunctionThrowsRule.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class MissingCheckedExceptionInFunctionThrowsRule implements Rule
+{
+
+	public function __construct(private MissingCheckedExceptionInThrowsCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$functionReflection = $node->getFunctionReflection();
+
+		$errors = [];
+		foreach ($this->check->check($functionReflection->getThrowType(), $statementResult->getThrowPoints()) as [$className, $throwPointNode]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() throws checked exception %s but it\'s missing from the PHPDoc @throws tag.',
+				$functionReflection->getName(),
+				$className,
+			))
+				->line($throwPointNode->getStartLine())
+				->identifier('missingType.checkedException')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/MissingCheckedExceptionInMethodThrowsRule.php b/src/Rules/Exceptions/MissingCheckedExceptionInMethodThrowsRule.php
new file mode 100644
index 00000000..9698f8ce
--- /dev/null
+++ b/src/Rules/Exceptions/MissingCheckedExceptionInMethodThrowsRule.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class MissingCheckedExceptionInMethodThrowsRule implements Rule
+{
+
+	public function __construct(private MissingCheckedExceptionInThrowsCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$methodReflection = $node->getMethodReflection();
+
+		$errors = [];
+		foreach ($this->check->check($methodReflection->getThrowType(), $statementResult->getThrowPoints()) as [$className, $throwPointNode]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() throws checked exception %s but it\'s missing from the PHPDoc @throws tag.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$className,
+			))
+				->line($throwPointNode->getStartLine())
+				->identifier('missingType.checkedException')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/MissingCheckedExceptionInPropertyHookThrowsRule.php b/src/Rules/Exceptions/MissingCheckedExceptionInPropertyHookThrowsRule.php
new file mode 100644
index 00000000..c7a95f7f
--- /dev/null
+++ b/src/Rules/Exceptions/MissingCheckedExceptionInPropertyHookThrowsRule.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyHookReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<PropertyHookReturnStatementsNode>
+ */
+final class MissingCheckedExceptionInPropertyHookThrowsRule implements Rule
+{
+
+	public function __construct(private MissingCheckedExceptionInThrowsCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyHookReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$hookReflection = $node->getHookReflection();
+
+		if (!$hookReflection->isPropertyHook()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$errors = [];
+		foreach ($this->check->check($hookReflection->getThrowType(), $statementResult->getThrowPoints()) as [$className, $throwPointNode]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s hook for property %s::$%s throws checked exception %s but it\'s missing from the PHPDoc @throws tag.',
+				ucfirst($hookReflection->getPropertyHookName()),
+				$hookReflection->getDeclaringClass()->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+				$className,
+			))
+				->line($throwPointNode->getStartLine())
+				->identifier('missingType.checkedException')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/MissingCheckedExceptionInThrowsCheck.php b/src/Rules/Exceptions/MissingCheckedExceptionInThrowsCheck.php
new file mode 100644
index 00000000..9f836b57
--- /dev/null
+++ b/src/Rules/Exceptions/MissingCheckedExceptionInThrowsCheck.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\ThrowPoint;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use Throwable;
+
+final class MissingCheckedExceptionInThrowsCheck
+{
+
+	public function __construct(private ExceptionTypeResolver $exceptionTypeResolver)
+	{
+	}
+
+	/**
+	 * @param ThrowPoint[] $throwPoints
+	 * @return array<int, array{string, Node\Expr|Node\Stmt}>
+	 */
+	public function check(?Type $throwType, array $throwPoints): array
+	{
+		if ($throwType === null) {
+			$throwType = new NeverType();
+		}
+
+		$classes = [];
+		foreach ($throwPoints as $throwPoint) {
+			if (!$throwPoint->isExplicit()) {
+				continue;
+			}
+
+			foreach (TypeUtils::flattenTypes($throwPoint->getType()) as $throwPointType) {
+				if ($throwPointType->isSuperTypeOf(new ObjectType(Throwable::class))->yes()) {
+					continue;
+				}
+				if ($throwType->isSuperTypeOf($throwPointType)->yes()) {
+					continue;
+				}
+
+				$isCheckedException = TrinaryLogic::createNo()->lazyOr(
+					$throwPointType->getObjectClassNames(),
+					fn (string $objectClassName) => TrinaryLogic::createFromBoolean($this->exceptionTypeResolver->isCheckedException($objectClassName, $throwPoint->getScope())),
+				);
+				if ($isCheckedException->no()) {
+					continue;
+				}
+
+				$classes[] = [$throwPointType->describe(VerbosityLevel::typeOnly()), $throwPoint->getNode()];
+			}
+		}
+
+		return $classes;
+	}
+
+}
diff --git a/src/Rules/Exceptions/NoncapturingCatchRule.php b/src/Rules/Exceptions/NoncapturingCatchRule.php
new file mode 100644
index 00000000..f2c4e479
--- /dev/null
+++ b/src/Rules/Exceptions/NoncapturingCatchRule.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\Catch_>
+ */
+final class NoncapturingCatchRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Catch_::class;
+	}
+
+	/**
+	 * @param Node\Stmt\Catch_ $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->getPhpVersion()->supportsNoncapturingCatches()->yes()) {
+			return [];
+		}
+
+		if ($node->var !== null) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Non-capturing catch is supported only on PHP 8.0 and later.')
+				->nonIgnorable()
+				->identifier('catch.nonCapturingNotSupported')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Exceptions/OverwrittenExitPointByFinallyRule.php b/src/Rules/Exceptions/OverwrittenExitPointByFinallyRule.php
new file mode 100644
index 00000000..c052471c
--- /dev/null
+++ b/src/Rules/Exceptions/OverwrittenExitPointByFinallyRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FinallyExitPointsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<FinallyExitPointsNode>
+ */
+final class OverwrittenExitPointByFinallyRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FinallyExitPointsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (count($node->getTryCatchExitPoints()) === 0) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($node->getTryCatchExitPoints() as $exitPoint) {
+			$errors[] = RuleErrorBuilder::message(sprintf('This %s is overwritten by a different one in the finally block below.', $this->describeExitPoint($exitPoint->getStatement())))
+				->line($exitPoint->getStatement()->getStartLine())
+				->identifier('finally.exitPoint')
+				->build();
+		}
+
+		foreach ($node->getFinallyExitPoints() as $exitPoint) {
+			$errors[] = RuleErrorBuilder::message(sprintf('The overwriting %s is on this line.', $this->describeExitPoint($exitPoint->getStatement())))
+				->line($exitPoint->getStatement()->getStartLine())
+				->identifier('finally.exitPoint')
+				->build();
+		}
+
+		return $errors;
+	}
+
+	private function describeExitPoint(Node\Stmt $stmt): string
+	{
+		if ($stmt instanceof Node\Stmt\Return_) {
+			return 'return';
+		}
+
+		if ($stmt instanceof Node\Stmt\Expression && $stmt->expr instanceof Node\Expr\Throw_) {
+			return 'throw';
+		}
+
+		if ($stmt instanceof Node\Stmt\Continue_) {
+			return 'continue';
+		}
+
+		if ($stmt instanceof Node\Stmt\Break_) {
+			return 'break';
+		}
+
+		return 'exit point';
+	}
+
+}
diff --git a/src/Rules/Exceptions/ThrowExprTypeRule.php b/src/Rules/Exceptions/ThrowExprTypeRule.php
new file mode 100644
index 00000000..6a426767
--- /dev/null
+++ b/src/Rules/Exceptions/ThrowExprTypeRule.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use Throwable;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Throw_>
+ */
+final class ThrowExprTypeRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Throw_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$throwableType = new ObjectType(Throwable::class);
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->expr,
+			'Throwing object of an unknown class %s.',
+			static fn (Type $type): bool => $throwableType->isSuperTypeOf($type)->yes(),
+		);
+
+		$foundType = $typeResult->getType();
+		if ($foundType instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$isSuperType = $throwableType->isSuperTypeOf($foundType);
+		if ($isSuperType->yes()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Invalid type %s to throw.',
+				$foundType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('throw.notThrowable')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Exceptions/ThrowExpressionRule.php b/src/Rules/Exceptions/ThrowExpressionRule.php
new file mode 100644
index 00000000..8a5889dd
--- /dev/null
+++ b/src/Rules/Exceptions/ThrowExpressionRule.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\StandaloneThrowExprVisitor;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Expr\Throw_>
+ */
+final class ThrowExpressionRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Throw_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($this->phpVersion->supportsThrowExpression()) {
+			return [];
+		}
+
+		if ($node->getAttribute(StandaloneThrowExprVisitor::ATTRIBUTE_NAME) === true) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Throw expression is supported only on PHP 8.0 and later.')->nonIgnorable()
+				->identifier('throw.notSupported')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Exceptions/ThrowsVoidFunctionWithExplicitThrowPointRule.php b/src/Rules/Exceptions/ThrowsVoidFunctionWithExplicitThrowPointRule.php
new file mode 100644
index 00000000..917842b0
--- /dev/null
+++ b/src/Rules/Exceptions/ThrowsVoidFunctionWithExplicitThrowPointRule.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class ThrowsVoidFunctionWithExplicitThrowPointRule implements Rule
+{
+
+	public function __construct(
+		private ExceptionTypeResolver $exceptionTypeResolver,
+		private bool $missingCheckedExceptionInThrows,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$functionReflection = $node->getFunctionReflection();
+
+		if ($functionReflection->getThrowType() === null || !$functionReflection->getThrowType()->isVoid()->yes()) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($statementResult->getThrowPoints() as $throwPoint) {
+			if (!$throwPoint->isExplicit()) {
+				continue;
+			}
+
+			foreach (TypeUtils::flattenTypes($throwPoint->getType()) as $throwPointType) {
+				$isCheckedException = TrinaryLogic::createFromBoolean($this->missingCheckedExceptionInThrows)->lazyAnd(
+					$throwPointType->getObjectClassNames(),
+					fn (string $objectClassName) => TrinaryLogic::createFromBoolean($this->exceptionTypeResolver->isCheckedException($objectClassName, $throwPoint->getScope())),
+				);
+				if ($isCheckedException->yes()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Function %s() throws exception %s but the PHPDoc contains @throws void.',
+					$functionReflection->getName(),
+					$throwPointType->describe(VerbosityLevel::typeOnly()),
+				))
+					->line($throwPoint->getNode()->getStartLine())
+					->identifier('throws.void')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/ThrowsVoidMethodWithExplicitThrowPointRule.php b/src/Rules/Exceptions/ThrowsVoidMethodWithExplicitThrowPointRule.php
new file mode 100644
index 00000000..dc423d03
--- /dev/null
+++ b/src/Rules/Exceptions/ThrowsVoidMethodWithExplicitThrowPointRule.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class ThrowsVoidMethodWithExplicitThrowPointRule implements Rule
+{
+
+	public function __construct(
+		private ExceptionTypeResolver $exceptionTypeResolver,
+		private bool $missingCheckedExceptionInThrows,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$methodReflection = $node->getMethodReflection();
+
+		if ($methodReflection->getThrowType() === null || !$methodReflection->getThrowType()->isVoid()->yes()) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($statementResult->getThrowPoints() as $throwPoint) {
+			if (!$throwPoint->isExplicit()) {
+				continue;
+			}
+
+			foreach (TypeUtils::flattenTypes($throwPoint->getType()) as $throwPointType) {
+				$isCheckedException = TrinaryLogic::createFromBoolean($this->missingCheckedExceptionInThrows)->lazyAnd(
+					$throwPointType->getObjectClassNames(),
+					fn (string $objectClassName) => TrinaryLogic::createFromBoolean($this->exceptionTypeResolver->isCheckedException($objectClassName, $throwPoint->getScope())),
+				);
+				if ($isCheckedException->yes()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Method %s::%s() throws exception %s but the PHPDoc contains @throws void.',
+					$methodReflection->getDeclaringClass()->getDisplayName(),
+					$methodReflection->getName(),
+					$throwPointType->describe(VerbosityLevel::typeOnly()),
+				))
+					->line($throwPoint->getNode()->getStartLine())
+					->identifier('throws.void')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/ThrowsVoidPropertyHookWithExplicitThrowPointRule.php b/src/Rules/Exceptions/ThrowsVoidPropertyHookWithExplicitThrowPointRule.php
new file mode 100644
index 00000000..b9a8c1d9
--- /dev/null
+++ b/src/Rules/Exceptions/ThrowsVoidPropertyHookWithExplicitThrowPointRule.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyHookReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<PropertyHookReturnStatementsNode>
+ */
+final class ThrowsVoidPropertyHookWithExplicitThrowPointRule implements Rule
+{
+
+	public function __construct(
+		private ExceptionTypeResolver $exceptionTypeResolver,
+		private bool $missingCheckedExceptionInThrows,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyHookReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$hookReflection = $node->getHookReflection();
+
+		if ($hookReflection->getThrowType() === null || !$hookReflection->getThrowType()->isVoid()->yes()) {
+			return [];
+		}
+
+		if ($hookReflection->getPropertyHookName() === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		$errors = [];
+		foreach ($statementResult->getThrowPoints() as $throwPoint) {
+			if (!$throwPoint->isExplicit()) {
+				continue;
+			}
+
+			foreach (TypeUtils::flattenTypes($throwPoint->getType()) as $throwPointType) {
+				$isCheckedException = TrinaryLogic::createFromBoolean($this->missingCheckedExceptionInThrows)->lazyAnd(
+					$throwPointType->getObjectClassNames(),
+					fn (string $objectClassName) => TrinaryLogic::createFromBoolean($this->exceptionTypeResolver->isCheckedException($objectClassName, $throwPoint->getScope())),
+				);
+				if ($isCheckedException->yes()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s hook for property %s::$%s throws exception %s but the PHPDoc contains @throws void.',
+					ucfirst($hookReflection->getPropertyHookName()),
+					$hookReflection->getDeclaringClass()->getDisplayName(),
+					$hookReflection->getHookedPropertyName(),
+					$throwPointType->describe(VerbosityLevel::typeOnly()),
+				))
+					->line($throwPoint->getNode()->getStartLine())
+					->identifier('throws.void')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/TooWideFunctionThrowTypeRule.php b/src/Rules/Exceptions/TooWideFunctionThrowTypeRule.php
new file mode 100644
index 00000000..1e6a233b
--- /dev/null
+++ b/src/Rules/Exceptions/TooWideFunctionThrowTypeRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class TooWideFunctionThrowTypeRule implements Rule
+{
+
+	public function __construct(private TooWideThrowTypeCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		$functionReflection = $node->getFunctionReflection();
+
+		$throwType = $functionReflection->getThrowType();
+		if ($throwType === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($this->check->check($throwType, $statementResult->getThrowPoints()) as $throwClass) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() has %s in PHPDoc @throws tag but it\'s not thrown.',
+				$functionReflection->getName(),
+				$throwClass,
+			))
+				->identifier('throws.unusedType')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/TooWideMethodThrowTypeRule.php b/src/Rules/Exceptions/TooWideMethodThrowTypeRule.php
new file mode 100644
index 00000000..f65a44ff
--- /dev/null
+++ b/src/Rules/Exceptions/TooWideMethodThrowTypeRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\FileTypeMapper;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class TooWideMethodThrowTypeRule implements Rule
+{
+
+	public function __construct(private FileTypeMapper $fileTypeMapper, private TooWideThrowTypeCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$statementResult = $node->getStatementResult();
+		$methodReflection = $node->getMethodReflection();
+		$classReflection = $node->getClassReflection();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$classReflection->getName(),
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$methodReflection->getName(),
+			$docComment->getText(),
+		);
+
+		if ($resolvedPhpDoc->getThrowsTag() === null) {
+			return [];
+		}
+
+		$throwType = $resolvedPhpDoc->getThrowsTag()->getType();
+
+		$errors = [];
+		foreach ($this->check->check($throwType, $statementResult->getThrowPoints()) as $throwClass) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s in PHPDoc @throws tag but it\'s not thrown.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$throwClass,
+			))
+				->identifier('throws.unusedType')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/TooWidePropertyHookThrowTypeRule.php b/src/Rules/Exceptions/TooWidePropertyHookThrowTypeRule.php
new file mode 100644
index 00000000..c516caa9
--- /dev/null
+++ b/src/Rules/Exceptions/TooWidePropertyHookThrowTypeRule.php
@@ -0,0 +1,75 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyHookReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<PropertyHookReturnStatementsNode>
+ */
+final class TooWidePropertyHookThrowTypeRule implements Rule
+{
+
+	public function __construct(private FileTypeMapper $fileTypeMapper, private TooWideThrowTypeCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyHookReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$statementResult = $node->getStatementResult();
+		$hookReflection = $node->getHookReflection();
+		if ($hookReflection->getPropertyHookName() === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		$classReflection = $node->getClassReflection();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$classReflection->getName(),
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$hookReflection->getName(),
+			$docComment->getText(),
+		);
+
+		if ($resolvedPhpDoc->getThrowsTag() === null) {
+			return [];
+		}
+
+		$throwType = $resolvedPhpDoc->getThrowsTag()->getType();
+
+		$errors = [];
+		foreach ($this->check->check($throwType, $statementResult->getThrowPoints()) as $throwClass) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'%s hook for property %s::$%s has %s in PHPDoc @throws tag but it\'s not thrown.',
+				ucfirst($hookReflection->getPropertyHookName()),
+				$hookReflection->getDeclaringClass()->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+				$throwClass,
+			))
+				->identifier('throws.unusedType')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Exceptions/TooWideThrowTypeCheck.php b/src/Rules/Exceptions/TooWideThrowTypeCheck.php
new file mode 100644
index 00000000..68c7fe86
--- /dev/null
+++ b/src/Rules/Exceptions/TooWideThrowTypeCheck.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Rules\Exceptions;
+return;
+
+use PHPStan\Analyser\ThrowPoint;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+
+final class TooWideThrowTypeCheck
+{
+
+	public function __construct(private bool $implicitThrows)
+	{
+	}
+
+	/**
+	 * @param ThrowPoint[] $throwPoints
+	 * @return string[]
+	 */
+	public function check(Type $throwType, array $throwPoints): array
+	{
+		if ($throwType->isVoid()->yes()) {
+			return [];
+		}
+
+		$throwPointType = TypeCombinator::union(...array_map(function (ThrowPoint $throwPoint): Type {
+			if (!$this->implicitThrows && !$throwPoint->isExplicit()) {
+				return new NeverType();
+			}
+
+			return $throwPoint->getType();
+		}, $throwPoints));
+
+		$throwClasses = [];
+		foreach (TypeUtils::flattenTypes($throwType) as $type) {
+			if (!$throwPointType instanceof NeverType && !$type->isSuperTypeOf($throwPointType)->no()) {
+				continue;
+			}
+
+			$throwClasses[] = $type->describe(VerbosityLevel::typeOnly());
+		}
+
+		return $throwClasses;
+	}
+
+}
diff --git a/src/Rules/FileRuleError.php b/src/Rules/FileRuleError.php
new file mode 100644
index 00000000..9fb8fd57
--- /dev/null
+++ b/src/Rules/FileRuleError.php
@@ -0,0 +1,14 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface FileRuleError extends RuleError
+{
+
+	public function getFile(): string;
+
+	public function getFileDescription(): string;
+
+}
diff --git a/src/Rules/FoundTypeResult.php b/src/Rules/FoundTypeResult.php
new file mode 100644
index 00000000..6c1e27a5
--- /dev/null
+++ b/src/Rules/FoundTypeResult.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class FoundTypeResult
+{
+
+	/**
+	 * @param string[] $referencedClasses
+	 * @param list<IdentifierRuleError> $unknownClassErrors
+	 */
+	public function __construct(
+		private Type $type,
+		private array $referencedClasses,
+		private array $unknownClassErrors,
+		private ?string $tip,
+	)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getReferencedClasses(): array
+	{
+		return $this->referencedClasses;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function getUnknownClassErrors(): array
+	{
+		return $this->unknownClassErrors;
+	}
+
+	public function getTip(): ?string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/FunctionCallParametersCheck.php b/src/Rules/FunctionCallParametersCheck.php
new file mode 100644
index 00000000..30501d2d
--- /dev/null
+++ b/src/Rules/FunctionCallParametersCheck.php
@@ -0,0 +1,659 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ResolvedFunctionVariant;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ConditionalType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function array_fill;
+use function array_key_exists;
+use function count;
+use function implode;
+use function in_array;
+use function is_int;
+use function is_string;
+use function max;
+use function sprintf;
+
+final class FunctionCallParametersCheck
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private NullsafeCheck $nullsafeCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private bool $checkArgumentTypes,
+		private bool $checkArgumentsPassedByReference,
+		private bool $checkExtraArguments,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @param 'attribute'|'callable'|'method'|'staticMethod'|'function'|'new' $nodeType
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		ParametersAcceptor $parametersAcceptor,
+		Scope $scope,
+		bool $isBuiltin,
+		Node\Expr\FuncCall|Node\Expr\MethodCall|Node\Expr\StaticCall|Node\Expr\New_ $funcCall,
+		string $nodeType,
+		TrinaryLogic $acceptsNamedArguments,
+		string $singleInsufficientParameterMessage,
+		string $pluralInsufficientParametersMessage,
+		string $singleInsufficientParameterInVariadicFunctionMessage,
+		string $pluralInsufficientParametersInVariadicFunctionMessage,
+		string $singleInsufficientParameterWithOptionalParametersMessage,
+		string $pluralInsufficientParametersWithOptionalParametersMessage,
+		string $wrongArgumentTypeMessage,
+		string $voidReturnTypeUsed,
+		string $parameterPassedByReferenceMessage,
+		string $unresolvableTemplateTypeMessage,
+		string $missingParameterMessage,
+		string $unknownParameterMessage,
+		string $unresolvableReturnTypeMessage,
+		string $unresolvableParameterTypeMessage,
+		string $namedArgumentMessage,
+	): array
+	{
+		$functionParametersMinCount = 0;
+		$functionParametersMaxCount = 0;
+		foreach ($parametersAcceptor->getParameters() as $parameter) {
+			if (!$parameter->isOptional()) {
+				$functionParametersMinCount++;
+			}
+
+			$functionParametersMaxCount++;
+		}
+
+		if ($parametersAcceptor->isVariadic()) {
+			$functionParametersMaxCount = -1;
+		}
+
+		/** @var array<int, array{Expr, Type|null, bool, string|null, int}> $arguments */
+		$arguments = [];
+		/** @var array<int, Node\Arg> $args */
+		$args = $funcCall->getArgs();
+		$hasNamedArguments = false;
+		$hasUnpackedArgument = false;
+		$errors = [];
+		foreach ($args as $arg) {
+			$argumentName = null;
+			if ($arg->name !== null) {
+				$hasNamedArguments = true;
+				$argumentName = $arg->name->toString();
+			}
+
+			if ($hasNamedArguments && $arg->unpack) {
+				$errors[] = RuleErrorBuilder::message('Named argument cannot be followed by an unpacked (...) argument.')
+					->identifier('argument.unpackAfterNamed')
+					->line($arg->getStartLine())
+					->nonIgnorable()
+					->build();
+			}
+			if ($hasUnpackedArgument && !$arg->unpack) {
+				if ($argumentName === null || !$scope->getPhpVersion()->supportsNamedArgumentAfterUnpackedArgument()->yes()) {
+					$errors[] = RuleErrorBuilder::message('Unpacked argument (...) cannot be followed by a non-unpacked argument.')
+						->identifier('argument.nonUnpackAfterUnpacked')
+						->line($arg->getStartLine())
+						->nonIgnorable()
+						->build();
+				}
+			}
+			if ($arg->unpack) {
+				$hasUnpackedArgument = true;
+			}
+			if ($arg->unpack) {
+				$type = $scope->getType($arg->value);
+				$arrays = $type->getConstantArrays();
+				if (count($arrays) > 0) {
+					$maxKeys = null;
+					foreach ($arrays as $array) {
+						$countType = $array->getArraySize();
+						if ($countType instanceof ConstantIntegerType) {
+							$keysCount = $countType->getValue();
+						} elseif ($countType instanceof IntegerRangeType) {
+							$keysCount = $countType->getMax();
+							if ($keysCount === null) {
+								throw new ShouldNotHappenException();
+							}
+						} else {
+							throw new ShouldNotHappenException();
+						}
+						if ($maxKeys !== null && $keysCount >= $maxKeys) {
+							continue;
+						}
+
+						$maxKeys = $keysCount;
+					}
+
+					for ($j = 0; $j < $maxKeys; $j++) {
+						$types = [];
+						$commonKey = null;
+						$isOptionalKey = false;
+						foreach ($arrays as $constantArray) {
+							$isOptionalKey = in_array($j, $constantArray->getOptionalKeys(), true);
+							$types[] = $constantArray->getValueTypes()[$j];
+							$keyType = $constantArray->getKeyTypes()[$j];
+							if ($commonKey === null) {
+								$commonKey = $keyType->getValue();
+							} elseif ($commonKey !== $keyType->getValue()) {
+								$commonKey = false;
+							}
+						}
+						$keyArgumentName = null;
+						if (is_string($commonKey)) {
+							$keyArgumentName = $commonKey;
+							$hasNamedArguments = true;
+						}
+						if ($isOptionalKey) {
+							continue;
+						}
+
+						$arguments[] = [
+							$arg->value,
+							TypeCombinator::union(...$types),
+							false,
+							$keyArgumentName,
+							$arg->getStartLine(),
+						];
+					}
+				} else {
+					$arguments[] = [
+						$arg->value,
+						$type->getIterableValueType(),
+						true,
+						null,
+						$arg->getStartLine(),
+					];
+				}
+				continue;
+			}
+
+			$arguments[] = [
+				$arg->value,
+				null,
+				false,
+				$argumentName,
+				$arg->getStartLine(),
+			];
+		}
+
+		if ($hasNamedArguments && !$scope->getPhpVersion()->supportsNamedArguments()->yes() && !(bool) $funcCall->getAttribute('isAttribute', false)) {
+			$errors[] = RuleErrorBuilder::message('Named arguments are supported only on PHP 8.0 and later.')
+				->identifier('argument.namedNotSupported')
+				->line($funcCall->getStartLine())
+				->nonIgnorable()
+				->build();
+		}
+
+		if (!$hasNamedArguments) {
+			$invokedParametersCount = count($arguments);
+			foreach ($arguments as [$argumentValue, $argumentValueType, $unpack, $argumentName]) {
+				if ($unpack) {
+					$invokedParametersCount = max($functionParametersMinCount, $functionParametersMaxCount);
+					break;
+				}
+			}
+
+			if (
+				$invokedParametersCount < $functionParametersMinCount
+				|| ($this->checkExtraArguments && $invokedParametersCount > $functionParametersMaxCount)
+			) {
+				if ($functionParametersMinCount === $functionParametersMaxCount) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$invokedParametersCount === 1 ? $singleInsufficientParameterMessage : $pluralInsufficientParametersMessage,
+						$invokedParametersCount,
+						$functionParametersMinCount,
+					))
+						->identifier('arguments.count')
+						->line($funcCall->getStartLine())
+						->build();
+				} elseif ($functionParametersMaxCount === -1 && $invokedParametersCount < $functionParametersMinCount) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$invokedParametersCount === 1 ? $singleInsufficientParameterInVariadicFunctionMessage : $pluralInsufficientParametersInVariadicFunctionMessage,
+						$invokedParametersCount,
+						$functionParametersMinCount,
+					))
+						->identifier('arguments.count')
+						->line($funcCall->getStartLine())
+						->build();
+				} elseif ($functionParametersMaxCount !== -1) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$invokedParametersCount === 1 ? $singleInsufficientParameterWithOptionalParametersMessage : $pluralInsufficientParametersWithOptionalParametersMessage,
+						$invokedParametersCount,
+						$functionParametersMinCount,
+						$functionParametersMaxCount,
+					))
+						->identifier('arguments.count')
+						->line($funcCall->getStartLine())
+						->build();
+				}
+			}
+		}
+
+		if (
+			!$funcCall instanceof Node\Expr\New_
+			&& !$scope->isInFirstLevelStatement()
+			&& $scope->getKeepVoidType($funcCall)->isVoid()->yes()
+		) {
+			$errors[] = RuleErrorBuilder::message($voidReturnTypeUsed)
+				->identifier(sprintf('%s.void', $nodeType))
+				->line($funcCall->getStartLine())
+				->build();
+		}
+
+		[$addedErrors, $argumentsWithParameters] = $this->processArguments($parametersAcceptor, $funcCall->getStartLine(), $isBuiltin, $arguments, $hasNamedArguments, $missingParameterMessage, $unknownParameterMessage);
+		foreach ($addedErrors as $error) {
+			$errors[] = $error;
+		}
+
+		if (!$this->checkArgumentTypes && !$this->checkArgumentsPassedByReference) {
+			return $errors;
+		}
+
+		foreach ($argumentsWithParameters as $i => [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, $parameter, $originalParameter]) {
+			if ($this->checkArgumentTypes && $unpack) {
+				$iterableTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+					$scope,
+					$argumentValue,
+					'',
+					static fn (Type $type): bool => $type->isIterable()->yes(),
+				);
+				$iterableTypeResultType = $iterableTypeResult->getType();
+				if (
+					!$iterableTypeResultType instanceof ErrorType
+					&& !$iterableTypeResultType->isIterable()->yes()
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Only iterables can be unpacked, %s given in argument #%d.',
+						$iterableTypeResultType->describe(VerbosityLevel::typeOnly()),
+						$i + 1,
+					))->identifier('argument.unpackNonIterable')->line($argumentLine)->build();
+				}
+			}
+
+			if ($parameter === null) {
+				continue;
+			}
+
+			if ($argumentValueType === null) {
+				if ($scope instanceof MutatingScope) {
+					$scope = $scope->pushInFunctionCall(null, $parameter);
+				}
+				$argumentValueType = $scope->getType($argumentValue);
+
+				if ($scope instanceof MutatingScope) {
+					$scope = $scope->popInFunctionCall();
+				}
+			}
+
+			if (!$acceptsNamedArguments->yes()) {
+				if ($argumentName !== null) {
+					$errors[] = RuleErrorBuilder::message(sprintf($namedArgumentMessage, sprintf('named argument $%s', $argumentName)))
+						->identifier('argument.named')
+						->line($argumentLine)
+						->build();
+				} elseif ($unpack) {
+					$unpackedArrayType = $scope->getType($argumentValue);
+					$hasStringKey = $unpackedArrayType->getIterableKeyType()->isString();
+					if (!$hasStringKey->no()) {
+						$errors[] = RuleErrorBuilder::message(sprintf($namedArgumentMessage, sprintf('unpacked array with %s', $hasStringKey->yes() ? 'string key' : 'possibly string key')))
+							->identifier('argument.named')
+							->line($argumentLine)
+							->build();
+					}
+				}
+			}
+
+			if ($this->checkArgumentTypes) {
+				$parameterType = TypeUtils::resolveLateResolvableTypes($parameter->getType());
+
+				if (
+					!$parameter->passedByReference()->createsNewVariable()
+					|| (!$isBuiltin && !$argumentValueType instanceof ErrorType)
+				) {
+					$accepts = $this->ruleLevelHelper->accepts($parameterType, $argumentValueType, $scope->isDeclareStrictTypes());
+
+					if (!$accepts->result) {
+						$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($parameterType, $argumentValueType);
+						$errors[] = RuleErrorBuilder::message(sprintf(
+							$wrongArgumentTypeMessage,
+							$this->describeParameter($parameter, $argumentName ?? $i + 1),
+							$parameterType->describe($verbosityLevel),
+							$argumentValueType->describe($verbosityLevel),
+						))
+							->identifier('argument.type')
+							->line($argumentLine)
+							->acceptsReasonsTip($accepts->reasons)
+							->build();
+					}
+				}
+
+				if (
+					$originalParameter !== null
+					&& !$this->unresolvableTypeHelper->containsUnresolvableType($originalParameter->getType())
+					&& $this->unresolvableTypeHelper->containsUnresolvableType($parameterType)
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$unresolvableParameterTypeMessage,
+						$this->describeParameter($parameter, $argumentName === null ? $i + 1 : null),
+					))->identifier('argument.unresolvableType')->line($argumentLine)->build();
+				}
+
+				if (
+					$parameter instanceof ExtendedParameterReflection
+					&& $parameter->getClosureThisType() !== null
+					&& ($argumentValue instanceof Expr\Closure || $argumentValue instanceof Expr\ArrowFunction)
+					&& $argumentValue->static
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$wrongArgumentTypeMessage,
+						$this->describeParameter($parameter, $argumentName === null ? $i + 1 : null),
+						'bindable closure',
+						'static closure',
+					))
+						->identifier('argument.staticClosure')
+						->line($argumentLine)
+						->build();
+				}
+			}
+
+			if (
+				!$this->checkArgumentsPassedByReference
+				|| !$parameter->passedByReference()->yes()
+			) {
+				continue;
+			}
+
+			if ($this->nullsafeCheck->containsNullSafe($argumentValue)) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					$parameterPassedByReferenceMessage,
+					$this->describeParameter($parameter, $argumentName === null ? $i + 1 : null),
+				))
+					->identifier('argument.byRef')
+					->line($argumentLine)
+					->build();
+				continue;
+			}
+
+			if (
+				$argumentValue instanceof Node\Expr\PropertyFetch
+				|| $argumentValue instanceof Node\Expr\StaticPropertyFetch) {
+				$propertyReflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($argumentValue, $scope);
+				foreach ($propertyReflections as $propertyReflection) {
+					$nativePropertyReflection = $propertyReflection->getNativeReflection();
+					if ($nativePropertyReflection === null) {
+						continue;
+					}
+					if (!$nativePropertyReflection->isReadOnly()) {
+						continue;
+					}
+
+					if ($nativePropertyReflection->isStatic()) {
+						$propertyDescription = sprintf('static readonly property %s::$%s', $propertyReflection->getDeclaringClass()->getDisplayName(), $propertyReflection->getName());
+					} else {
+						$propertyDescription = sprintf('readonly property %s::$%s', $propertyReflection->getDeclaringClass()->getDisplayName(), $propertyReflection->getName());
+					}
+
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'%s is passed by reference so it does not accept %s.',
+						$this->describeParameter($parameter, $argumentName === null ? $i + 1 : null),
+						$propertyDescription,
+					))->identifier('argument.byRef')->line($argumentLine)->build();
+				}
+			}
+
+			if ($argumentValue instanceof Node\Expr\Variable
+				|| $argumentValue instanceof Node\Expr\ArrayDimFetch
+				|| $argumentValue instanceof Node\Expr\PropertyFetch
+				|| $argumentValue instanceof Node\Expr\StaticPropertyFetch) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				$parameterPassedByReferenceMessage,
+				$this->describeParameter($parameter, $argumentName === null ? $i + 1 : null),
+			))->identifier('argument.byRef')->line($argumentLine)->build();
+		}
+
+		if ($this->checkMissingTypehints && $parametersAcceptor instanceof ResolvedFunctionVariant) {
+			$originalParametersAcceptor = $parametersAcceptor->getOriginalParametersAcceptor();
+			$resolvedTypes = $parametersAcceptor->getResolvedTemplateTypeMap()->getTypes();
+			if (count($resolvedTypes) > 0) {
+				$returnTemplateTypes = [];
+				TypeTraverser::map(
+					$parametersAcceptor->getReturnTypeWithUnresolvableTemplateTypes(),
+					static function (Type $type, callable $traverse) use (&$returnTemplateTypes): Type {
+						while ($type instanceof ConditionalType && $type->isResolvable()) {
+							$type = $type->resolve();
+						}
+
+						if ($type instanceof TemplateType && $type->getDefault() === null) {
+							$returnTemplateTypes[$type->getName()] = true;
+							return $type;
+						}
+
+						return $traverse($type);
+					},
+				);
+
+				$parameterTemplateTypes = [];
+				foreach ($originalParametersAcceptor->getParameters() as $parameter) {
+					TypeTraverser::map($parameter->getType(), static function (Type $type, callable $traverse) use (&$parameterTemplateTypes): Type {
+						if ($type instanceof TemplateType && $type->getDefault() === null) {
+							$parameterTemplateTypes[$type->getName()] = true;
+							return $type;
+						}
+
+						return $traverse($type);
+					});
+				}
+
+				foreach ($resolvedTypes as $name => $type) {
+					if (
+						!($type instanceof ErrorType)
+						&& (
+							!$type instanceof NeverType
+							|| $type->isExplicit()
+						)
+					) {
+						continue;
+					}
+
+					if (!array_key_exists($name, $returnTemplateTypes)) {
+						continue;
+					}
+
+					if (!array_key_exists($name, $parameterTemplateTypes)) {
+						continue;
+					}
+
+					$errors[] = RuleErrorBuilder::message(sprintf($unresolvableTemplateTypeMessage, $name))
+						->identifier('argument.templateType')
+						->line($funcCall->getStartLine())
+						->tip('See: https://phpstan.org/blog/solving-phpstan-error-unable-to-resolve-template-type')
+						->build();
+				}
+			}
+
+			if (
+				!$this->unresolvableTypeHelper->containsUnresolvableType($originalParametersAcceptor->getReturnType())
+				&& $this->unresolvableTypeHelper->containsUnresolvableType($parametersAcceptor->getReturnType())
+			) {
+				$errors[] = RuleErrorBuilder::message($unresolvableReturnTypeMessage)
+					->identifier(sprintf('%s.unresolvableReturnType', $nodeType))
+					->line($funcCall->getStartLine())
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param array<int, array{Expr, Type|null, bool, string|null, int}> $arguments
+	 * @return array{list<IdentifierRuleError>, array<int, array{Expr, Type|null, bool, (string|null), int, (ParameterReflection|null), (ParameterReflection|null)}>}
+	 */
+	private function processArguments(
+		ParametersAcceptor $parametersAcceptor,
+		int $line,
+		bool $isBuiltin,
+		array $arguments,
+		bool $hasNamedArguments,
+		string $missingParameterMessage,
+		string $unknownParameterMessage,
+	): array
+	{
+		$parameters = $parametersAcceptor->getParameters();
+		$originalParameters = $parametersAcceptor instanceof ResolvedFunctionVariant
+			? $parametersAcceptor->getOriginalParametersAcceptor()->getParameters()
+			: array_fill(0, count($parameters), null);
+		$parametersByName = [];
+		$originalParametersByName = [];
+		$unusedParametersByName = [];
+		$errors = [];
+		foreach ($parameters as $i => $parameter) {
+			$parametersByName[$parameter->getName()] = $parameter;
+			$originalParametersByName[$parameter->getName()] = $originalParameters[$i];
+
+			if ($parameter->isVariadic()) {
+				continue;
+			}
+
+			$unusedParametersByName[$parameter->getName()] = $parameter;
+		}
+
+		$newArguments = [];
+
+		$namedArgumentAlreadyOccurred = false;
+		foreach ($arguments as $i => [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine]) {
+			if ($argumentName === null) {
+				if (!isset($parameters[$i])) {
+					if (!$parametersAcceptor->isVariadic() || count($parameters) === 0) {
+						$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, null, null];
+						break;
+					}
+
+					$parameter = $parameters[count($parameters) - 1];
+					$originalParameter = $originalParameters[count($originalParameters) - 1];
+					if (!$parameter->isVariadic()) {
+						$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, null, null];
+						break; // func_get_args
+					}
+				} else {
+					$parameter = $parameters[$i];
+					$originalParameter = $originalParameters[$i];
+				}
+			} elseif (array_key_exists($argumentName, $parametersByName)) {
+				$namedArgumentAlreadyOccurred = true;
+				$parameter = $parametersByName[$argumentName];
+				$originalParameter = $originalParametersByName[$argumentName];
+			} else {
+				$namedArgumentAlreadyOccurred = true;
+
+				$parametersCount = count($parameters);
+				if (
+					!$parametersAcceptor->isVariadic()
+					|| $parametersCount <= 0
+					|| $isBuiltin
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf($unknownParameterMessage, $argumentName))
+						->identifier('argument.unknown')
+						->line($argumentLine)
+						->build();
+					$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, null, null];
+					continue;
+				}
+
+				$parameter = $parameters[$parametersCount - 1];
+				$originalParameter = $originalParameters[$parametersCount - 1];
+			}
+
+			if ($namedArgumentAlreadyOccurred && $argumentName === null && !$unpack) {
+				$errors[] = RuleErrorBuilder::message('Named argument cannot be followed by a positional argument.')
+					->identifier('argument.positionalAfterNamed')
+					->line($argumentLine)
+					->nonIgnorable()
+					->build();
+				$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, null, null];
+				continue;
+			}
+
+			$newArguments[$i] = [$argumentValue, $argumentValueType, $unpack, $argumentName, $argumentLine, $parameter, $originalParameter];
+
+			if (
+				$hasNamedArguments
+				&& !$parameter->isVariadic()
+				&& !array_key_exists($parameter->getName(), $unusedParametersByName)
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Argument for parameter $%s has already been passed.', $parameter->getName()))
+					->identifier('argument.duplicate')
+					->line($argumentLine)
+					->build();
+				continue;
+			}
+
+			unset($unusedParametersByName[$parameter->getName()]);
+		}
+
+		if ($hasNamedArguments) {
+			foreach ($unusedParametersByName as $parameter) {
+				if ($parameter->isOptional()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf($missingParameterMessage, sprintf('%s (%s)', $parameter->getName(), $parameter->getType()->describe(VerbosityLevel::typeOnly()))))
+					->identifier('argument.missing')
+					->line($line)
+					->build();
+			}
+		}
+
+		return [$errors, $newArguments];
+	}
+
+	private function describeParameter(ParameterReflection $parameter, int|string|null $positionOrNamed): string
+	{
+		$parts = [];
+		if (is_int($positionOrNamed)) {
+			$parts[] = 'Parameter #' . $positionOrNamed;
+		} elseif ($parameter->isVariadic() && is_string($positionOrNamed)) {
+			$parts[] = 'Named argument ' . $positionOrNamed . ' for variadic parameter';
+		} else {
+			$parts[] = 'Parameter';
+		}
+
+		$name = $parameter->getName();
+		if ($name !== '') {
+			$parts[] = ($parameter->isVariadic() ? '...$' : '$') . $name;
+		}
+
+		return implode(' ', $parts);
+	}
+
+}
diff --git a/src/Rules/FunctionDefinitionCheck.php b/src/Rules/FunctionDefinitionCheck.php
new file mode 100644
index 00000000..82141656
--- /dev/null
+++ b/src/Rules/FunctionDefinitionCheck.php
@@ -0,0 +1,733 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\ComplexType;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\FunctionLike;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\IntersectionType;
+use PhpParser\Node\Name;
+use PhpParser\Node\NullableType;
+use PhpParser\Node\Param;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PhpParser\Node\UnionType;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Printer\NodeTypePrinter;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\NonexistentParentClassType;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function array_filter;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function count;
+use function in_array;
+use function is_string;
+use function sprintf;
+use function strtolower;
+
+final class FunctionDefinitionCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private PhpVersion $phpVersion,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkThisOnly,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkFunction(
+		Function_ $function,
+		PhpFunctionFromParserNodeReflection $functionReflection,
+		string $parameterMessage,
+		string $returnMessage,
+		string $unionTypesMessage,
+		string $templateTypeMissingInParameterMessage,
+		string $unresolvableParameterTypeMessage,
+		string $unresolvableReturnTypeMessage,
+	): array
+	{
+		return $this->checkParametersAcceptor(
+			$functionReflection,
+			$function,
+			$parameterMessage,
+			$returnMessage,
+			$unionTypesMessage,
+			$templateTypeMissingInParameterMessage,
+			$unresolvableParameterTypeMessage,
+			$unresolvableReturnTypeMessage,
+		);
+	}
+
+	/**
+	 * @param Node\Param[] $parameters
+	 * @param Node\Identifier|Node\Name|Node\ComplexType|null $returnTypeNode
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkAnonymousFunction(
+		Scope $scope,
+		array $parameters,
+		$returnTypeNode,
+		string $parameterMessage,
+		string $returnMessage,
+		string $unionTypesMessage,
+		string $unresolvableParameterTypeMessage,
+		string $unresolvableReturnTypeMessage,
+	): array
+	{
+		$errors = [];
+		$unionTypeReported = false;
+		foreach ($parameters as $i => $param) {
+			if ($param->type === null) {
+				continue;
+			}
+			if (
+				!$unionTypeReported
+				&& $param->type instanceof UnionType
+				&& !$this->phpVersion->supportsNativeUnionTypes()
+			) {
+				$errors[] = RuleErrorBuilder::message($unionTypesMessage)
+					->line($param->getStartLine())
+					->identifier('parameter.unionTypeNotSupported')
+					->nonIgnorable()
+					->build();
+				$unionTypeReported = true;
+			}
+
+			if (!$param->var instanceof Variable || !is_string($param->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$implicitlyNullableTypeError = $this->checkImplicitlyNullableType(
+				$param->type,
+				$param->default,
+				$i + 1,
+				$param->getStartLine(),
+				$param->var->name,
+			);
+			if ($implicitlyNullableTypeError !== null) {
+				$errors[] = $implicitlyNullableTypeError;
+			}
+
+			$type = $scope->getFunctionType($param->type, false, false);
+			if ($type->isVoid()->yes()) {
+				$errors[] = RuleErrorBuilder::message(sprintf($parameterMessage, $param->var->name, 'void'))
+					->line($param->type->getStartLine())
+					->identifier('parameter.void')
+					->nonIgnorable()
+					->build();
+			}
+			if (
+				$this->phpVersion->supportsPureIntersectionTypes()
+				&& $this->unresolvableTypeHelper->containsUnresolvableType($type)
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf($unresolvableParameterTypeMessage, $param->var->name))
+					->line($param->type->getStartLine())
+					->identifier('parameter.unresolvableNativeType')
+					->nonIgnorable()
+					->build();
+			}
+
+			foreach ($type->getReferencedClasses() as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf($parameterMessage, $param->var->name, $class))
+					->line($param->type->getStartLine())
+					->identifier('class.notFound')
+					->build();
+					continue;
+				}
+
+				$classReflection = $this->reflectionProvider->getClass($class);
+				if ($classReflection->isTrait()) {
+					$errors[] = RuleErrorBuilder::message(sprintf($parameterMessage, $param->var->name, $class))
+						->line($param->type->getStartLine())
+						->identifier('parameter.trait')
+						->build();
+					continue;
+				}
+
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $param->type),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+		}
+
+		if ($this->phpVersion->deprecatesRequiredParameterAfterOptional()) {
+			$errors = array_merge($errors, $this->checkRequiredParameterAfterOptional($parameters));
+		}
+
+		if ($returnTypeNode === null) {
+			return $errors;
+		}
+
+		if (
+			!$unionTypeReported
+			&& $returnTypeNode instanceof UnionType
+			&& !$this->phpVersion->supportsNativeUnionTypes()
+		) {
+			$errors[] = RuleErrorBuilder::message($unionTypesMessage)
+				->line($returnTypeNode->getStartLine())
+				->identifier('return.unionTypeNotSupported')
+				->nonIgnorable()
+				->build();
+		}
+
+		$returnType = $scope->getFunctionType($returnTypeNode, false, false);
+		if (
+			$this->phpVersion->supportsPureIntersectionTypes()
+			&& $this->unresolvableTypeHelper->containsUnresolvableType($returnType)
+		) {
+			$errors[] = RuleErrorBuilder::message($unresolvableReturnTypeMessage)
+				->line($returnTypeNode->getStartLine())
+				->identifier('return.unresolvableNativeType')
+				->nonIgnorable()
+				->build();
+		}
+
+		foreach ($returnType->getReferencedClasses() as $returnTypeClass) {
+			if (!$this->reflectionProvider->hasClass($returnTypeClass)) {
+				$errors[] = RuleErrorBuilder::message(sprintf($returnMessage, $returnTypeClass))
+					->line($returnTypeNode->getStartLine())
+					->identifier('class.notFound')
+					->build();
+				continue;
+			}
+
+			if ($this->reflectionProvider->getClass($returnTypeClass)->isTrait()) {
+				$errors[] = RuleErrorBuilder::message(sprintf($returnMessage, $returnTypeClass))
+					->line($returnTypeNode->getStartLine())
+					->identifier('return.trait')
+					->build();
+				continue;
+			}
+
+			$errors = array_merge(
+				$errors,
+				$this->classCheck->checkClassNames([
+					new ClassNameNodePair($returnTypeClass, $returnTypeNode),
+				], $this->checkClassCaseSensitivity),
+			);
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkClassMethod(
+		PhpMethodFromParserNodeReflection $methodReflection,
+		ClassMethod|Node\PropertyHook $methodNode,
+		string $parameterMessage,
+		string $returnMessage,
+		string $unionTypesMessage,
+		string $templateTypeMissingInParameterMessage,
+		string $unresolvableParameterTypeMessage,
+		string $unresolvableReturnTypeMessage,
+		string $selfOutMessage,
+	): array
+	{
+		$errors = $this->checkParametersAcceptor(
+			$methodReflection,
+			$methodNode,
+			$parameterMessage,
+			$returnMessage,
+			$unionTypesMessage,
+			$templateTypeMissingInParameterMessage,
+			$unresolvableParameterTypeMessage,
+			$unresolvableReturnTypeMessage,
+		);
+
+		$selfOutType = $methodReflection->getSelfOutType();
+		if ($selfOutType !== null) {
+			$selfOutTypeReferencedClasses = $selfOutType->getReferencedClasses();
+
+			foreach ($selfOutTypeReferencedClasses as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf($selfOutMessage, $class))
+						->line($methodNode->getStartLine())
+						->identifier('class.notFound')
+						->build();
+					continue;
+				}
+				if (!$this->reflectionProvider->getClass($class)->isTrait()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf($selfOutMessage, $class))
+					->line($methodNode->getStartLine())
+					->identifier('selfOut.trait')
+					->build();
+			}
+
+			$errors = array_merge(
+				$errors,
+				$this->classCheck->checkClassNames(
+					array_map(static fn (string $class): ClassNameNodePair => new ClassNameNodePair($class, $methodNode), $selfOutTypeReferencedClasses),
+					$this->checkClassCaseSensitivity,
+				),
+			);
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkParametersAcceptor(
+		ParametersAcceptor $parametersAcceptor,
+		FunctionLike $functionNode,
+		string $parameterMessage,
+		string $returnMessage,
+		string $unionTypesMessage,
+		string $templateTypeMissingInParameterMessage,
+		string $unresolvableParameterTypeMessage,
+		string $unresolvableReturnTypeMessage,
+	): array
+	{
+		$errors = [];
+		$parameterNodes = $functionNode->getParams();
+		if (!$this->phpVersion->supportsNativeUnionTypes()) {
+			$unionTypeReported = false;
+			foreach ($parameterNodes as $parameterNode) {
+				if (!$parameterNode->type instanceof UnionType) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message($unionTypesMessage)
+					->line($parameterNode->getStartLine())
+					->identifier('parameter.unionTypeNotSupported')
+					->nonIgnorable()
+					->build();
+				$unionTypeReported = true;
+				break;
+			}
+
+			if (!$unionTypeReported && $functionNode->getReturnType() instanceof UnionType) {
+				$errors[] = RuleErrorBuilder::message($unionTypesMessage)
+					->line($functionNode->getReturnType()->getStartLine())
+					->identifier('return.unionTypeNotSupported')
+					->nonIgnorable()
+					->build();
+			}
+		}
+
+		foreach ($parameterNodes as $i => $parameterNode) {
+			if (!$parameterNode->var instanceof Variable || !is_string($parameterNode->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$implicitlyNullableTypeError = $this->checkImplicitlyNullableType($parameterNode->type, $parameterNode->default, $i + 1, $parameterNode->getStartLine(), $parameterNode->var->name);
+			if ($implicitlyNullableTypeError === null) {
+				continue;
+			}
+
+			$errors[] = $implicitlyNullableTypeError;
+		}
+
+		if ($this->phpVersion->deprecatesRequiredParameterAfterOptional()) {
+			$errors = array_merge($errors, $this->checkRequiredParameterAfterOptional($parameterNodes));
+		}
+
+		$returnTypeNode = $functionNode->getReturnType() ?? $functionNode;
+		foreach ($parametersAcceptor->getParameters() as $parameter) {
+			$referencedClasses = $this->getParameterReferencedClasses($parameter);
+			$parameterNode = null;
+			$parameterNodeCallback = function () use ($parameter, $parameterNodes, &$parameterNode): Param {
+				if ($parameterNode === null) {
+					$parameterNode = $this->getParameterNode($parameter->getName(), $parameterNodes);
+				}
+
+				return $parameterNode;
+			};
+			if ($parameter instanceof ExtendedParameterReflection) {
+				$parameterVar = $parameterNodeCallback()->var;
+				if (!$parameterVar instanceof Variable || !is_string($parameterVar->name)) {
+					throw new ShouldNotHappenException();
+				}
+				if ($parameter->getNativeType()->isVoid()->yes()) {
+					$errors[] = RuleErrorBuilder::message(sprintf($parameterMessage, $parameterVar->name, 'void'))
+						->line($parameterNodeCallback()->getStartLine())
+						->identifier('parameter.void')
+						->nonIgnorable()
+						->build();
+				}
+				if (
+					$this->phpVersion->supportsPureIntersectionTypes()
+					&& $this->unresolvableTypeHelper->containsUnresolvableType($parameter->getNativeType())
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf($unresolvableParameterTypeMessage, $parameterVar->name))
+						->line($parameterNodeCallback()->getStartLine())
+						->identifier('parameter.unresolvableNativeType')
+						->nonIgnorable()
+						->build();
+				}
+			}
+			foreach ($referencedClasses as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						$parameterMessage,
+						$parameter->getName(),
+						$class,
+					))
+						->line($parameterNodeCallback()->getStartLine())
+						->identifier('class.notFound')
+						->build();
+					continue;
+				}
+				if (!$this->reflectionProvider->getClass($class)->isTrait()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					$parameterMessage,
+					$parameter->getName(),
+					$class,
+				))
+					->line($parameterNodeCallback()->getStartLine())
+					->identifier('parameter.trait')
+					->build();
+			}
+
+			$errors = array_merge(
+				$errors,
+				$this->classCheck->checkClassNames(
+					array_map(static fn (string $class): ClassNameNodePair => new ClassNameNodePair($class, $parameterNodeCallback()), $referencedClasses),
+					$this->checkClassCaseSensitivity,
+				),
+			);
+			if (!($parameter->getType() instanceof NonexistentParentClassType)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf($parameterMessage, $parameter->getName(), $parameter->getType()->describe(VerbosityLevel::typeOnly())))
+				->line($parameterNodeCallback()->getStartLine())
+				->identifier('parameter.noParent')
+				->build();
+		}
+
+		if ($this->phpVersion->supportsPureIntersectionTypes() && $functionNode->getReturnType() !== null) {
+			$nativeReturnType = ParserNodeTypeToPHPStanType::resolve($functionNode->getReturnType(), null);
+			if ($this->unresolvableTypeHelper->containsUnresolvableType($nativeReturnType)) {
+				$errors[] = RuleErrorBuilder::message($unresolvableReturnTypeMessage)
+					->nonIgnorable()
+					->line($returnTypeNode->getStartLine())
+					->identifier('return.unresolvableNativeType')
+					->build();
+			}
+		}
+
+		$returnTypeReferencedClasses = $this->getReturnTypeReferencedClasses($parametersAcceptor);
+
+		foreach ($returnTypeReferencedClasses as $class) {
+			if (!$this->reflectionProvider->hasClass($class)) {
+				$errors[] = RuleErrorBuilder::message(sprintf($returnMessage, $class))
+					->line($returnTypeNode->getStartLine())
+					->identifier('class.notFound')
+					->build();
+				continue;
+			}
+			if (!$this->reflectionProvider->getClass($class)->isTrait()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf($returnMessage, $class))
+				->line($returnTypeNode->getStartLine())
+				->identifier('return.trait')
+				->build();
+		}
+
+		$errors = array_merge(
+			$errors,
+			$this->classCheck->checkClassNames(
+				array_map(static fn (string $class): ClassNameNodePair => new ClassNameNodePair($class, $returnTypeNode), $returnTypeReferencedClasses),
+				$this->checkClassCaseSensitivity,
+			),
+		);
+		if ($parametersAcceptor->getReturnType() instanceof NonexistentParentClassType) {
+			$errors[] = RuleErrorBuilder::message(sprintf($returnMessage, $parametersAcceptor->getReturnType()->describe(VerbosityLevel::typeOnly())))
+				->line($returnTypeNode->getStartLine())
+				->identifier('return.noParent')
+				->build();
+		}
+
+		$templateTypeMap = $parametersAcceptor->getTemplateTypeMap();
+		$templateTypes = $templateTypeMap->getTypes();
+		if (count($templateTypes) > 0) {
+			foreach ($parametersAcceptor->getParameters() as $parameter) {
+				TypeTraverser::map($parameter->getType(), static function (Type $type, callable $traverse) use (&$templateTypes): Type {
+					if ($type instanceof TemplateType) {
+						unset($templateTypes[$type->getName()]);
+						return $traverse($type);
+					}
+
+					return $traverse($type);
+				});
+			}
+
+			$returnType = $parametersAcceptor->getReturnType();
+			if ($returnType instanceof ConditionalTypeForParameter && !$returnType->isNegated()) {
+				TypeTraverser::map($returnType, static function (Type $type, callable $traverse) use (&$templateTypes): Type {
+					if ($type instanceof TemplateType) {
+						unset($templateTypes[$type->getName()]);
+						return $traverse($type);
+					}
+
+					return $traverse($type);
+				});
+			}
+
+			foreach (array_keys($templateTypes) as $templateTypeName) {
+				$errors[] = RuleErrorBuilder::message(sprintf($templateTypeMissingInParameterMessage, $templateTypeName))
+					->identifier('method.templateTypeNotInParameter')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param Param[] $parameterNodes
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkRequiredParameterAfterOptional(array $parameterNodes): array
+	{
+		/** @var string|null $optionalParameter */
+		$optionalParameter = null;
+		$errors = [];
+		$targetPhpVersion = null;
+		foreach ($parameterNodes as $parameterNode) {
+			if (!$parameterNode->var instanceof Variable) {
+				throw new ShouldNotHappenException();
+			}
+			if (!is_string($parameterNode->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$parameterName = $parameterNode->var->name;
+			if ($optionalParameter !== null && $parameterNode->default === null && !$parameterNode->variadic) {
+				$errors[] = RuleErrorBuilder::message(
+					sprintf(
+						'Deprecated in PHP %s: Required parameter $%s follows optional parameter $%s.',
+						$targetPhpVersion ?? '8.0',
+						$parameterName,
+						$optionalParameter,
+					),
+				)->line($parameterNode->getStartLine())
+					->identifier('parameter.requiredAfterOptional')
+					->build();
+				$targetPhpVersion = null;
+				continue;
+			}
+			if ($parameterNode->default === null) {
+				continue;
+			}
+			if ($parameterNode->type === null) {
+				$optionalParameter = $parameterName;
+				continue;
+			}
+
+			$defaultValue = $parameterNode->default;
+			if (!$defaultValue instanceof ConstFetch) {
+				$optionalParameter = $parameterName;
+				continue;
+			}
+
+			$constantName = $defaultValue->name->toLowerString();
+			if ($constantName === 'null') {
+				if (!$this->phpVersion->deprecatesRequiredParameterAfterOptionalNullableAndDefaultNull()) {
+					continue;
+				}
+
+				$parameterNodeType = $parameterNode->type;
+
+				if ($parameterNodeType instanceof NullableType) {
+					$targetPhpVersion = '8.1';
+				}
+
+				if ($this->phpVersion->deprecatesRequiredParameterAfterOptionalUnionOrMixed()) {
+					$types = [];
+
+					if ($parameterNodeType instanceof UnionType) {
+						$types = $parameterNodeType->types;
+					} elseif ($parameterNodeType instanceof Identifier) {
+						$types = [$parameterNodeType];
+					}
+
+					$nullOrMixed = array_filter($types, static fn (Identifier|Name|IntersectionType $type): bool => $type instanceof Identifier && (in_array($type->name, ['null', 'mixed'], true)));
+
+					if (0 < count($nullOrMixed)) {
+						$targetPhpVersion = '8.3';
+					}
+				}
+
+				if ($targetPhpVersion === null) {
+					continue;
+				}
+			}
+
+			$optionalParameter = $parameterName;
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param Param[] $parameterNodes
+	 */
+	private function getParameterNode(
+		string $parameterName,
+		array $parameterNodes,
+	): Param
+	{
+		foreach ($parameterNodes as $param) {
+			if ($param->var instanceof Node\Expr\Error) {
+				continue;
+			}
+
+			if (!is_string($param->var->name)) {
+				continue;
+			}
+
+			if ($param->var->name === $parameterName) {
+				return $param;
+			}
+		}
+
+		throw new ShouldNotHappenException(sprintf('Parameter %s not found.', $parameterName));
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function getParameterReferencedClasses(ParameterReflection $parameter): array
+	{
+		if (!$parameter instanceof ExtendedParameterReflection) {
+			return $parameter->getType()->getReferencedClasses();
+		}
+
+		if ($this->checkThisOnly) {
+			return $parameter->getNativeType()->getReferencedClasses();
+		}
+
+		$moreClasses = [];
+		if ($parameter->getOutType() !== null) {
+			$moreClasses = array_merge($moreClasses, $parameter->getOutType()->getReferencedClasses());
+		}
+		if ($parameter->getClosureThisType() !== null) {
+			$moreClasses = array_merge($moreClasses, $parameter->getClosureThisType()->getReferencedClasses());
+		}
+
+		return array_merge(
+			$parameter->getNativeType()->getReferencedClasses(),
+			$parameter->getPhpDocType()->getReferencedClasses(),
+			$moreClasses,
+		);
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function getReturnTypeReferencedClasses(ParametersAcceptor $parametersAcceptor): array
+	{
+		if (!$parametersAcceptor instanceof ExtendedParametersAcceptor) {
+			return $parametersAcceptor->getReturnType()->getReferencedClasses();
+		}
+
+		if ($this->checkThisOnly) {
+			return $parametersAcceptor->getNativeReturnType()->getReferencedClasses();
+		}
+
+		return array_merge(
+			$parametersAcceptor->getNativeReturnType()->getReferencedClasses(),
+			$parametersAcceptor->getPhpDocReturnType()->getReferencedClasses(),
+		);
+	}
+
+	private function checkImplicitlyNullableType(
+		Identifier|Name|ComplexType|null $type,
+		?Node\Expr $default,
+		int $order,
+		int $line,
+		string $name,
+	): ?IdentifierRuleError
+	{
+		if (!$default instanceof ConstFetch) {
+			return null;
+		}
+
+		if ($default->name->toLowerString() !== 'null') {
+			return null;
+		}
+
+		if ($type === null) {
+			return null;
+		}
+
+		if ($type instanceof NullableType || $type instanceof IntersectionType) {
+			return null;
+		}
+
+		if (!$this->phpVersion->deprecatesImplicitlyNullableParameterTypes()) {
+			return null;
+		}
+
+		if ($type instanceof Identifier && strtolower($type->name) === 'mixed') {
+			return null;
+		}
+
+		if ($type instanceof Identifier && strtolower($type->name) === 'null') {
+			return null;
+		}
+		if ($type instanceof Name && $type->toLowerString() === 'null') {
+			return null;
+		}
+
+		if ($type instanceof UnionType) {
+			foreach ($type->types as $innerType) {
+				if ($innerType instanceof Identifier && strtolower($innerType->name) === 'null') {
+					return null;
+				}
+			}
+		}
+
+		return RuleErrorBuilder::message(sprintf(
+			'Deprecated in PHP 8.4: Parameter #%d $%s (%s) is implicitly nullable via default value null.',
+			$order,
+			$name,
+			NodeTypePrinter::printType($type),
+		))->line($line)
+			->identifier('parameter.implicitlyNullable')
+			->build();
+	}
+
+}
diff --git a/src/Rules/FunctionReturnTypeCheck.php b/src/Rules/FunctionReturnTypeCheck.php
new file mode 100644
index 00000000..be52c5d9
--- /dev/null
+++ b/src/Rules/FunctionReturnTypeCheck.php
@@ -0,0 +1,112 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use Generator;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+final class FunctionReturnTypeCheck
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkReturnType(
+		Scope $scope,
+		Type $returnType,
+		?Expr $returnValue,
+		Node $returnNode,
+		string $emptyReturnStatementMessage,
+		string $voidMessage,
+		string $typeMismatchMessage,
+		string $neverMessage,
+		bool $isGenerator,
+	): array
+	{
+		$returnType = TypeUtils::resolveLateResolvableTypes($returnType);
+
+		if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+			return [
+				RuleErrorBuilder::message($neverMessage)
+					->line($returnNode->getStartLine())
+					->identifier('return.never')
+					->build(),
+			];
+		}
+
+		if ($isGenerator) {
+			$returnType = $returnType->getTemplateType(Generator::class, 'TReturn');
+			if ($returnType instanceof ErrorType) {
+				return [];
+			}
+		}
+
+		$isVoidSuperType = $returnType->isVoid();
+		$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType, null);
+		if ($returnValue === null) {
+			if (!$isVoidSuperType->no()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$emptyReturnStatementMessage,
+					$returnType->describe($verbosityLevel),
+				))
+					->line($returnNode->getStartLine())
+					->identifier('return.empty')
+					->build(),
+			];
+		}
+
+		if ($returnNode instanceof Expr\Yield_ || $returnNode instanceof Expr\YieldFrom) {
+			return [];
+		}
+
+		$returnValueType = $scope->getType($returnValue);
+		$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType, $returnValueType);
+
+		if ($isVoidSuperType->yes()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$voidMessage,
+					$returnValueType->describe($verbosityLevel),
+				))
+					->line($returnNode->getStartLine())
+					->identifier('return.void')
+					->build(),
+			];
+		}
+
+		$accepts = $this->ruleLevelHelper->accepts($returnType, $returnValueType, $scope->isDeclareStrictTypes());
+		if (!$accepts->result) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$typeMismatchMessage,
+					$returnType->describe($verbosityLevel),
+					$returnValueType->describe($verbosityLevel),
+				))
+					->line($returnNode->getStartLine())
+					->identifier('return.type')
+					->acceptsReasonsTip($accepts->reasons)
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/ArrayFilterRule.php b/src/Rules/Functions/ArrayFilterRule.php
new file mode 100644
index 00000000..1df75b67
--- /dev/null
+++ b/src/Rules/Functions/ArrayFilterRule.php
@@ -0,0 +1,139 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ArrayFilterRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		if ($functionReflection->getName() !== 'array_filter') {
+			return [];
+		}
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$node->getArgs(),
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+		if ($normalizedFuncCall === null) {
+			return [];
+		}
+
+		$args = $normalizedFuncCall->getArgs();
+		if (count($args) !== 1) {
+			return [];
+		}
+
+		if ($this->treatPhpDocTypesAsCertain) {
+			$arrayType = $scope->getType($args[0]->value);
+		} else {
+			$arrayType = $scope->getNativeType($args[0]->value);
+		}
+
+		if ($arrayType->isIterableAtLeastOnce()->no()) {
+			$message = 'Parameter #1 $array (%s) to function array_filter is empty, call has no effect.';
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				$message,
+				$arrayType->describe(VerbosityLevel::value()),
+			))->identifier('arrayFilter.empty');
+			if ($this->treatPhpDocTypesAsCertain) {
+				$nativeArrayType = $scope->getNativeType($args[0]->value);
+				if ($this->treatPhpDocTypesAsCertainTip && !$nativeArrayType->isIterableAtLeastOnce()->no()) {
+					$errorBuilder->treatPhpDocTypesAsCertainTip();
+				}
+			}
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		$falsyType = StaticTypeFactory::falsey();
+		$isSuperType = $falsyType->isSuperTypeOf($arrayType->getIterableValueType());
+
+		if ($isSuperType->no()) {
+			$message = 'Parameter #1 $array (%s) to function array_filter does not contain falsy values, the array will always stay the same.';
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				$message,
+				$arrayType->describe(VerbosityLevel::value()),
+			))->identifier('arrayFilter.same');
+
+			if ($this->treatPhpDocTypesAsCertain) {
+				$nativeArrayType = $scope->getNativeType($args[0]->value);
+				$isNativeSuperType = $falsyType->isSuperTypeOf($nativeArrayType->getIterableValueType());
+				if ($this->treatPhpDocTypesAsCertainTip && !$isNativeSuperType->no()) {
+					$errorBuilder->treatPhpDocTypesAsCertainTip();
+				}
+			}
+
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		if ($isSuperType->yes()) {
+			$message = 'Parameter #1 $array (%s) to function array_filter contains falsy values only, the result will always be an empty array.';
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				$message,
+				$arrayType->describe(VerbosityLevel::value()),
+			))->identifier('arrayFilter.alwaysEmpty');
+
+			if ($this->treatPhpDocTypesAsCertain) {
+				$nativeArrayType = $scope->getNativeType($args[0]->value);
+				$isNativeSuperType = $falsyType->isSuperTypeOf($nativeArrayType->getIterableValueType());
+				if ($this->treatPhpDocTypesAsCertainTip && !$isNativeSuperType->yes()) {
+					$errorBuilder->treatPhpDocTypesAsCertainTip();
+				}
+			}
+
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/ArrayValuesRule.php b/src/Rules/Functions/ArrayValuesRule.php
new file mode 100644
index 00000000..fda8bbf9
--- /dev/null
+++ b/src/Rules/Functions/ArrayValuesRule.php
@@ -0,0 +1,115 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ArrayValuesRule implements Rule
+{
+
+	public function __construct(
+		private readonly ReflectionProvider $reflectionProvider,
+		private readonly bool $treatPhpDocTypesAsCertain,
+		private bool $treatPhpDocTypesAsCertainTip,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		if ($functionReflection->getName() !== 'array_values') {
+			return [];
+		}
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$node->getArgs(),
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+
+		if ($normalizedFuncCall === null) {
+			return [];
+		}
+
+		$args = $normalizedFuncCall->getArgs();
+		if (count($args) === 0) {
+			return [];
+		}
+
+		if ($this->treatPhpDocTypesAsCertain) {
+			$arrayType = $scope->getType($args[0]->value);
+		} else {
+			$arrayType = $scope->getNativeType($args[0]->value);
+		}
+
+		if ($arrayType->isIterableAtLeastOnce()->no()) {
+			$message = 'Parameter #1 $array (%s) to function array_values is empty, call has no effect.';
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				$message,
+				$arrayType->describe(VerbosityLevel::value()),
+			))->identifier('arrayValues.empty');
+			if ($this->treatPhpDocTypesAsCertain) {
+				$nativeArrayType = $scope->getNativeType($args[0]->value);
+				if ($this->treatPhpDocTypesAsCertainTip && !$nativeArrayType->isIterableAtLeastOnce()->no()) {
+					$errorBuilder->treatPhpDocTypesAsCertainTip();
+				}
+			}
+
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		if ($arrayType->isList()->yes()) {
+			$message = 'Parameter #1 $array (%s) of array_values is already a list, call has no effect.';
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				$message,
+				$arrayType->describe(VerbosityLevel::value()),
+			))->identifier('arrayValues.list');
+			if ($this->treatPhpDocTypesAsCertain) {
+				$nativeArrayType = $scope->getNativeType($args[0]->value);
+				if ($this->treatPhpDocTypesAsCertainTip && !$nativeArrayType->isList()->yes()) {
+					$errorBuilder->treatPhpDocTypesAsCertainTip();
+				}
+			}
+
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/ArrowFunctionAttributesRule.php b/src/Rules/Functions/ArrowFunctionAttributesRule.php
new file mode 100644
index 00000000..afcdee7a
--- /dev/null
+++ b/src/Rules/Functions/ArrowFunctionAttributesRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InArrowFunctionNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InArrowFunctionNode>
+ */
+final class ArrowFunctionAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InArrowFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->getOriginalNode()->attrGroups,
+			Attribute::TARGET_FUNCTION,
+			'function',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/ArrowFunctionReturnNullsafeByRefRule.php b/src/Rules/Functions/ArrowFunctionReturnNullsafeByRefRule.php
new file mode 100644
index 00000000..f24f1e3c
--- /dev/null
+++ b/src/Rules/Functions/ArrowFunctionReturnNullsafeByRefRule.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\NullsafeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Expr\ArrowFunction>
+ */
+final class ArrowFunctionReturnNullsafeByRefRule implements Rule
+{
+
+	public function __construct(private NullsafeCheck $nullsafeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrowFunction::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->byRef) {
+			return [];
+		}
+
+		if (!$this->nullsafeCheck->containsNullSafe($node->expr)) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('Nullsafe cannot be returned by reference.')
+				->nonIgnorable()
+				->identifier('nullsafe.byRef')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Functions/ArrowFunctionReturnTypeRule.php b/src/Rules/Functions/ArrowFunctionReturnTypeRule.php
new file mode 100644
index 00000000..abb80899
--- /dev/null
+++ b/src/Rules/Functions/ArrowFunctionReturnTypeRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Generator;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InArrowFunctionNode;
+use PHPStan\Rules\FunctionReturnTypeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+
+/**
+ * @implements Rule<InArrowFunctionNode>
+ */
+final class ArrowFunctionReturnTypeRule implements Rule
+{
+
+	public function __construct(private FunctionReturnTypeCheck $returnTypeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InArrowFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInAnonymousFunction()) {
+			throw new ShouldNotHappenException();
+		}
+
+		/** @var Type $returnType */
+		$returnType = $scope->getAnonymousFunctionReturnType();
+		$generatorType = new ObjectType(Generator::class);
+
+		$originalNode = $node->getOriginalNode();
+		$isVoidSuperType = $returnType->isVoid();
+		if ($originalNode->returnType === null && $isVoidSuperType->yes()) {
+			return [];
+		}
+
+		$exprType = $scope->getType($originalNode->expr);
+		if (
+			$returnType instanceof NeverType
+			&& $returnType->isExplicit()
+			&& $exprType instanceof NeverType
+			&& $exprType->isExplicit()
+		) {
+			return [];
+		}
+
+		return $this->returnTypeCheck->checkReturnType(
+			$scope,
+			$returnType,
+			$originalNode->expr,
+			$originalNode->expr,
+			'Anonymous function should return %s but empty return statement found.',
+			'Anonymous function with return type void returns %s but should not return anything.',
+			'Anonymous function should return %s but returns %s.',
+			'Anonymous function should never return but return statement found.',
+			$generatorType->isSuperTypeOf($returnType)->yes(),
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/CallCallablesRule.php b/src/Rules/Functions/CallCallablesRule.php
new file mode 100644
index 00000000..acc25cd4
--- /dev/null
+++ b/src/Rules/Functions/CallCallablesRule.php
@@ -0,0 +1,143 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\InaccessibleMethod;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function count;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class CallCallablesRule implements Rule
+{
+
+	public function __construct(
+		private FunctionCallParametersCheck $check,
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(
+		Node $node,
+		Scope $scope,
+	): array
+	{
+		if (!$node->name instanceof Node\Expr) {
+			return [];
+		}
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $node->name),
+			'Invoking callable on an unknown class %s.',
+			static fn (Type $type): bool => $type->isCallable()->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$isCallable = $type->isCallable();
+		if ($isCallable->no()) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Trying to invoke %s but it\'s not a callable.', $type->describe(VerbosityLevel::value())),
+				)->identifier('callable.nonCallable')->build(),
+			];
+		}
+		if ($this->reportMaybes && $isCallable->maybe()) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Trying to invoke %s but it might not be a callable.', $type->describe(VerbosityLevel::value())),
+				)->identifier('callable.nonCallable')->build(),
+			];
+		}
+
+		$parametersAcceptors = $type->getCallableParametersAcceptors($scope);
+		$messages = [];
+
+		$acceptsNamedArguments = TrinaryLogic::createYes();
+		foreach ($parametersAcceptors as $parametersAcceptor) {
+			$acceptsNamedArguments = $acceptsNamedArguments->and($parametersAcceptor->acceptsNamedArguments());
+		}
+
+		if (
+			count($parametersAcceptors) === 1
+			&& $parametersAcceptors[0] instanceof InaccessibleMethod
+		) {
+			$method = $parametersAcceptors[0]->getMethod();
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Call to %s method %s() of class %s.',
+				$method->isPrivate() ? 'private' : 'protected',
+				$method->getName(),
+				$method->getDeclaringClass()->getDisplayName(),
+			))->identifier('callable.inaccessibleMethod')->build();
+		}
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$node->getArgs(),
+			$parametersAcceptors,
+			null,
+		);
+
+		if ($type instanceof ClosureType) {
+			$callableDescription = 'closure';
+		} else {
+			$callableDescription = sprintf('callable %s', SprintfHelper::escapeFormatString($type->describe(VerbosityLevel::value())));
+		}
+
+		return array_merge(
+			$messages,
+			$this->check->check(
+				$parametersAcceptor,
+				$scope,
+				false,
+				$node,
+				'callable',
+				$acceptsNamedArguments,
+				ucfirst($callableDescription) . ' invoked with %d parameter, %d required.',
+				ucfirst($callableDescription) . ' invoked with %d parameters, %d required.',
+				ucfirst($callableDescription) . ' invoked with %d parameter, at least %d required.',
+				ucfirst($callableDescription) . ' invoked with %d parameters, at least %d required.',
+				ucfirst($callableDescription) . ' invoked with %d parameter, %d-%d required.',
+				ucfirst($callableDescription) . ' invoked with %d parameters, %d-%d required.',
+				'%s of ' . $callableDescription . ' expects %s, %s given.',
+				'Result of ' . $callableDescription . ' (void) is used.',
+				'%s of ' . $callableDescription . ' is passed by reference, so it expects variables only.',
+				'Unable to resolve the template type %s in call to ' . $callableDescription,
+				'Missing parameter $%s in call to ' . $callableDescription . '.',
+				'Unknown parameter $%s in call to ' . $callableDescription . '.',
+				'Return type of call to ' . $callableDescription . ' contains unresolvable type.',
+				'%s of ' . $callableDescription . ' contains unresolvable type.',
+				ucfirst($callableDescription) . ' invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/CallToFunctionParametersRule.php b/src/Rules/Functions/CallToFunctionParametersRule.php
new file mode 100644
index 00000000..ccf06777
--- /dev/null
+++ b/src/Rules/Functions/CallToFunctionParametersRule.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class CallToFunctionParametersRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider, private FunctionCallParametersCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$function = $this->reflectionProvider->getFunction($node->name, $scope);
+		$functionName = SprintfHelper::escapeFormatString($function->getName());
+
+		return $this->check->check(
+			ParametersAcceptorSelector::selectFromArgs(
+				$scope,
+				$node->getArgs(),
+				$function->getVariants(),
+				$function->getNamedArgumentsVariants(),
+			),
+			$scope,
+			$function->isBuiltin(),
+			$node,
+			'function',
+			$function->acceptsNamedArguments(),
+			'Function ' . $functionName . ' invoked with %d parameter, %d required.',
+			'Function ' . $functionName . ' invoked with %d parameters, %d required.',
+			'Function ' . $functionName . ' invoked with %d parameter, at least %d required.',
+			'Function ' . $functionName . ' invoked with %d parameters, at least %d required.',
+			'Function ' . $functionName . ' invoked with %d parameter, %d-%d required.',
+			'Function ' . $functionName . ' invoked with %d parameters, %d-%d required.',
+			'%s of function ' . $functionName . ' expects %s, %s given.',
+			'Result of function ' . $functionName . ' (void) is used.',
+			'%s of function ' . $functionName . ' is passed by reference, so it expects variables only.',
+			'Unable to resolve the template type %s in call to function ' . $functionName,
+			'Missing parameter $%s in call to function ' . $functionName . '.',
+			'Unknown parameter $%s in call to function ' . $functionName . '.',
+			'Return type of call to function ' . $functionName . ' contains unresolvable type.',
+			'%s of function ' . $functionName . ' contains unresolvable type.',
+			'Function ' . $functionName . ' invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/CallToFunctionStatementWithoutSideEffectsRule.php b/src/Rules/Functions/CallToFunctionStatementWithoutSideEffectsRule.php
new file mode 100644
index 00000000..65e9bbc5
--- /dev/null
+++ b/src/Rules/Functions/CallToFunctionStatementWithoutSideEffectsRule.php
@@ -0,0 +1,141 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Expression>
+ */
+final class CallToFunctionStatementWithoutSideEffectsRule implements Rule
+{
+
+	private const SIDE_EFFECT_FLIP_PARAMETERS = [
+		// functionName => [name, pos, testName]
+		'print_r' => ['return', 1, 'isTruthy'],
+		'var_export' => ['return', 1, 'isTruthy'],
+		'highlight_string' => ['return', 1, 'isTruthy'],
+
+	];
+
+	public const PHPSTAN_TESTING_FUNCTIONS = [
+		'PHPStan\\dumpType',
+		'PHPStan\\dumpPhpDocType',
+		'PHPStan\\debugScope',
+		'PHPStan\\Testing\\assertType',
+		'PHPStan\\Testing\\assertNativeType',
+		'PHPStan\\Testing\\assertVariableCertainty',
+	];
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Expression::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->expr instanceof Node\Expr\FuncCall) {
+			return [];
+		}
+
+		$funcCall = $node->expr;
+		if (!($funcCall->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($funcCall->name, $scope)) {
+			return [];
+		}
+
+		$function = $this->reflectionProvider->getFunction($funcCall->name, $scope);
+		$functionName = $function->getName();
+		$functionHasSideEffects = !$function->hasSideEffects()->no();
+
+		if (in_array($functionName, self::PHPSTAN_TESTING_FUNCTIONS, true)) {
+			return [];
+		}
+
+		if (isset(self::SIDE_EFFECT_FLIP_PARAMETERS[$functionName])) {
+			[
+				$flipParameterName,
+				$flipParameterPosition,
+				$testName,
+			] = self::SIDE_EFFECT_FLIP_PARAMETERS[$functionName];
+
+			$sideEffectFlipped = false;
+			$hasNamedParameter = false;
+			$checker = [
+				'isNotNull' => static fn (Type $type) => $type->isNull()->no(),
+				'isTruthy' => static fn (Type $type) => $type->toBoolean()->isTrue()->yes(),
+			][$testName];
+
+			foreach ($funcCall->getRawArgs() as $i => $arg) {
+				if (!$arg instanceof Arg) {
+					return [];
+				}
+
+				$isFlipParameter = false;
+
+				if ($arg->name !== null) {
+					$hasNamedParameter = true;
+					if ($arg->name->name === $flipParameterName) {
+						$isFlipParameter = true;
+					}
+				}
+
+				if (!$hasNamedParameter && $i === $flipParameterPosition) {
+					$isFlipParameter = true;
+				}
+
+				if ($isFlipParameter) {
+					$sideEffectFlipped = $checker($scope->getType($arg->value));
+					break;
+				}
+			}
+
+			if (!$sideEffectFlipped) {
+				return [];
+			}
+
+			$functionHasSideEffects = false;
+		}
+
+		if (!$functionHasSideEffects || $node->expr->isFirstClassCallable()) {
+			if (!$node->expr->isFirstClassCallable()) {
+				$throwsType = $function->getThrowType();
+				if ($throwsType !== null && !$throwsType->isVoid()->yes()) {
+					return [];
+				}
+			}
+
+			$functionResult = $scope->getType($funcCall);
+			if ($functionResult instanceof NeverType && $functionResult->isExplicit()) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Call to function %s() on a separate line has no effect.',
+					$function->getName(),
+				))->identifier('function.resultUnused')->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/CallToNonExistentFunctionRule.php b/src/Rules/Functions/CallToNonExistentFunctionRule.php
new file mode 100644
index 00000000..b3e6b53a
--- /dev/null
+++ b/src/Rules/Functions/CallToNonExistentFunctionRule.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class CallToNonExistentFunctionRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private bool $checkFunctionNameCase,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			if ($scope->isInFunctionExists($node->name->toString())) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf('Function %s not found.', (string) $node->name))->identifier('function.notFound')->discoveringSymbolsTip()->build(),
+			];
+		}
+
+		$function = $this->reflectionProvider->getFunction($node->name, $scope);
+		$name = (string) $node->name;
+
+		if ($this->checkFunctionNameCase) {
+			/** @var string $calledFunctionName */
+			$calledFunctionName = $this->reflectionProvider->resolveFunctionName($node->name, $scope);
+			if (
+				strtolower($function->getName()) === strtolower($calledFunctionName)
+				&& $function->getName() !== $calledFunctionName
+			) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Call to function %s() with incorrect case: %s',
+						$function->getName(),
+						$name,
+					))->identifier('function.nameCase')->build(),
+				];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/CallUserFuncRule.php b/src/Rules/Functions/CallUserFuncRule.php
new file mode 100644
index 00000000..5a1a8189
--- /dev/null
+++ b/src/Rules/Functions/CallUserFuncRule.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\Rule;
+use function count;
+use function ucfirst;
+
+/**
+ * @implements Rule<FuncCall>
+ */
+final class CallUserFuncRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private FunctionCallParametersCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		if (count($node->getArgs()) === 0) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		if ($functionReflection->getName() !== 'call_user_func') {
+			return [];
+		}
+
+		$result = ArgumentsNormalizer::reorderCallUserFuncArguments(
+			$node,
+			$scope,
+		);
+		if ($result === null) {
+			return [];
+		}
+		[$parametersAcceptor, $funcCall, $acceptsNamedArguments] = $result;
+
+		$callableDescription = 'callable passed to call_user_func()';
+
+		return $this->check->check(
+			$parametersAcceptor,
+			$scope,
+			false,
+			$funcCall,
+			'function',
+			$acceptsNamedArguments,
+			ucfirst($callableDescription) . ' invoked with %d parameter, %d required.',
+			ucfirst($callableDescription) . ' invoked with %d parameters, %d required.',
+			ucfirst($callableDescription) . ' invoked with %d parameter, at least %d required.',
+			ucfirst($callableDescription) . ' invoked with %d parameters, at least %d required.',
+			ucfirst($callableDescription) . ' invoked with %d parameter, %d-%d required.',
+			ucfirst($callableDescription) . ' invoked with %d parameters, %d-%d required.',
+			'%s of ' . $callableDescription . ' expects %s, %s given.',
+			'Result of ' . $callableDescription . ' (void) is used.',
+			'%s of ' . $callableDescription . ' is passed by reference, so it expects variables only.',
+			'Unable to resolve the template type %s in call to ' . $callableDescription,
+			'Missing parameter $%s in call to ' . $callableDescription . '.',
+			'Unknown parameter $%s in call to ' . $callableDescription . '.',
+			'Return type of call to ' . $callableDescription . ' contains unresolvable type.',
+			'%s of ' . $callableDescription . ' contains unresolvable type.',
+			ucfirst($callableDescription) . ' invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/ClosureAttributesRule.php b/src/Rules/Functions/ClosureAttributesRule.php
new file mode 100644
index 00000000..356c0185
--- /dev/null
+++ b/src/Rules/Functions/ClosureAttributesRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClosureNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClosureNode>
+ */
+final class ClosureAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClosureNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->getOriginalNode()->attrGroups,
+			Attribute::TARGET_FUNCTION,
+			'function',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/ClosureReturnTypeRule.php b/src/Rules/Functions/ClosureReturnTypeRule.php
new file mode 100644
index 00000000..9b56c9ea
--- /dev/null
+++ b/src/Rules/Functions/ClosureReturnTypeRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClosureReturnStatementsNode;
+use PHPStan\Rules\FunctionReturnTypeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+/**
+ * @implements Rule<ClosureReturnStatementsNode>
+ */
+final class ClosureReturnTypeRule implements Rule
+{
+
+	public function __construct(private FunctionReturnTypeCheck $returnTypeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClosureReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInAnonymousFunction()) {
+			return [];
+		}
+
+		/** @var Type $returnType */
+		$returnType = $scope->getAnonymousFunctionReturnType();
+		$containsNull = TypeCombinator::containsNull($returnType);
+		$hasNativeTypehint = $node->getClosureExpr()->returnType !== null;
+
+		$messages = [];
+		foreach ($node->getReturnStatements() as $returnStatement) {
+			$returnNode = $returnStatement->getReturnNode();
+			$returnExpr = $returnNode->expr;
+			if ($returnExpr === null && $containsNull && !$hasNativeTypehint) {
+				$returnExpr = new Node\Expr\ConstFetch(new Node\Name\FullyQualified('null'));
+			}
+			$returnMessages = $this->returnTypeCheck->checkReturnType(
+				$returnStatement->getScope(),
+				$returnType,
+				$returnExpr,
+				$returnNode,
+				'Anonymous function should return %s but empty return statement found.',
+				'Anonymous function with return type void returns %s but should not return anything.',
+				'Anonymous function should return %s but returns %s.',
+				'Anonymous function should never return but return statement found.',
+				$node->isGenerator(),
+			);
+
+			foreach ($returnMessages as $returnMessage) {
+				$messages[] = $returnMessage;
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Functions/DefineParametersRule.php b/src/Rules/Functions/DefineParametersRule.php
new file mode 100644
index 00000000..3101f6ef
--- /dev/null
+++ b/src/Rules/Functions/DefineParametersRule.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class DefineParametersRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+		if ($this->phpVersion->supportsCaseInsensitiveConstantNames()) {
+			return [];
+		}
+		$name = strtolower((string) $node->name);
+		if ($name !== 'define') {
+			return [];
+		}
+		$args = $node->getArgs();
+		$argsCount = count($args);
+		// Expects 2 or 3, 1 arg is caught by CallToFunctionParametersRule
+		if ($argsCount < 3) {
+			return [];
+		}
+		return [
+			RuleErrorBuilder::message(
+				'Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported.',
+			)
+				->line($node->getStartLine())
+				->identifier('argument.unused')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Functions/DuplicateFunctionDeclarationRule.php b/src/Rules/Functions/DuplicateFunctionDeclarationRule.php
new file mode 100644
index 00000000..2f32f47f
--- /dev/null
+++ b/src/Rules/Functions/DuplicateFunctionDeclarationRule.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\ReflectionFunction;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\File\RelativePathHelper;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_map;
+use function count;
+use function implode;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class DuplicateFunctionDeclarationRule implements Rule
+{
+
+	public function __construct(private Reflector $reflector, private RelativePathHelper $relativePathHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$thisFunction = $node->getFunctionReflection();
+		$allFunctions = $this->reflector->reflectAllFunctions();
+		$filteredFunctions = [];
+		foreach ($allFunctions as $reflectionFunction) {
+			if ($reflectionFunction->getName() !== $thisFunction->getName()) {
+				continue;
+			}
+
+			$filteredFunctions[] = $reflectionFunction;
+		}
+
+		if (count($filteredFunctions) < 2) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				"Function %s declared multiple times:\n%s",
+				$thisFunction->getName(),
+				implode("\n", array_map(fn (ReflectionFunction $function) => sprintf('- %s:%d', $this->relativePathHelper->getRelativePath($function->getFileName() ?? 'unknown'), $function->getStartLine()), $filteredFunctions)),
+			))->identifier('function.duplicate')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Functions/ExistingClassesInArrowFunctionTypehintsRule.php b/src/Rules/Functions/ExistingClassesInArrowFunctionTypehintsRule.php
new file mode 100644
index 00000000..feff07db
--- /dev/null
+++ b/src/Rules/Functions/ExistingClassesInArrowFunctionTypehintsRule.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\NonAcceptingNeverType;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use function array_merge;
+
+/**
+ * @implements Rule<Node\Expr\ArrowFunction>
+ */
+final class ExistingClassesInArrowFunctionTypehintsRule implements Rule
+{
+
+	public function __construct(private FunctionDefinitionCheck $check, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\ArrowFunction::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = [];
+		if ($node->returnType !== null && !$this->phpVersion->supportsNeverReturnTypeInArrowFunction()) {
+			$returnType = ParserNodeTypeToPHPStanType::resolve($node->returnType, $scope->isInClass() ? $scope->getClassReflection() : null);
+			if ($returnType instanceof NonAcceptingNeverType) {
+				$messages[] = RuleErrorBuilder::message('Never return type in arrow function is supported only on PHP 8.2 and later.')
+					->identifier('return.neverTypeNotSupported')
+					->nonIgnorable()
+					->build();
+			}
+		}
+
+		return array_merge($messages, $this->check->checkAnonymousFunction(
+			$scope,
+			$node->getParams(),
+			$node->getReturnType(),
+			'Parameter $%s of anonymous function has invalid type %s.',
+			'Anonymous function has invalid return type %s.',
+			'Anonymous function uses native union types but they\'re supported only on PHP 8.0 and later.',
+			'Parameter $%s of anonymous function has unresolvable native type.',
+			'Anonymous function has unresolvable native return type.',
+		));
+	}
+
+}
diff --git a/src/Rules/Functions/ExistingClassesInClosureTypehintsRule.php b/src/Rules/Functions/ExistingClassesInClosureTypehintsRule.php
new file mode 100644
index 00000000..2485d65a
--- /dev/null
+++ b/src/Rules/Functions/ExistingClassesInClosureTypehintsRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Closure;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Expr\Closure>
+ */
+final class ExistingClassesInClosureTypehintsRule implements Rule
+{
+
+	public function __construct(private FunctionDefinitionCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Closure::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->checkAnonymousFunction(
+			$scope,
+			$node->getParams(),
+			$node->getReturnType(),
+			'Parameter $%s of anonymous function has invalid type %s.',
+			'Anonymous function has invalid return type %s.',
+			'Anonymous function uses native union types but they\'re supported only on PHP 8.0 and later.',
+			'Parameter $%s of anonymous function has unresolvable native type.',
+			'Anonymous function has unresolvable native return type.',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/ExistingClassesInTypehintsRule.php b/src/Rules/Functions/ExistingClassesInTypehintsRule.php
new file mode 100644
index 00000000..c3c03c56
--- /dev/null
+++ b/src/Rules/Functions/ExistingClassesInTypehintsRule.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class ExistingClassesInTypehintsRule implements Rule
+{
+
+	public function __construct(private FunctionDefinitionCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functionName = SprintfHelper::escapeFormatString($node->getFunctionReflection()->getName());
+
+		return $this->check->checkFunction(
+			$node->getOriginalNode(),
+			$node->getFunctionReflection(),
+			sprintf(
+				'Parameter $%%s of function %s() has invalid type %%s.',
+				$functionName,
+			),
+			sprintf(
+				'Function %s() has invalid return type %%s.',
+				$functionName,
+			),
+			sprintf('Function %s() uses native union types but they\'re supported only on PHP 8.0 and later.', $functionName),
+			sprintf('Template type %%s of function %s() is not referenced in a parameter.', $functionName),
+			sprintf(
+				'Parameter $%%s of function %s() has unresolvable native type.',
+				$functionName,
+			),
+			sprintf(
+				'Function %s() has unresolvable native return type.',
+				$functionName,
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/FunctionAttributesRule.php b/src/Rules/Functions/FunctionAttributesRule.php
new file mode 100644
index 00000000..d9dbf3f7
--- /dev/null
+++ b/src/Rules/Functions/FunctionAttributesRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class FunctionAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->getOriginalNode()->attrGroups,
+			Attribute::TARGET_FUNCTION,
+			'function',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/FunctionCallableRule.php b/src/Rules/Functions/FunctionCallableRule.php
new file mode 100644
index 00000000..0573145c
--- /dev/null
+++ b/src/Rules/Functions/FunctionCallableRule.php
@@ -0,0 +1,114 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionCallableNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<FunctionCallableNode>
+ */
+final class FunctionCallableRule implements Rule
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider, private RuleLevelHelper $ruleLevelHelper, private PhpVersion $phpVersion, private bool $checkFunctionNameCase, private bool $reportMaybes)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionCallableNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$this->phpVersion->supportsFirstClassCallables()) {
+			return [
+				RuleErrorBuilder::message('First-class callables are supported only on PHP 8.1 and later.')
+					->nonIgnorable()
+					->identifier('callable.notSupported')
+					->build(),
+			];
+		}
+
+		$functionName = $node->getName();
+		if ($functionName instanceof Node\Name) {
+			$functionNameName = $functionName->toString();
+			if ($this->reflectionProvider->hasFunction($functionName, $scope)) {
+				if ($this->checkFunctionNameCase) {
+					$function = $this->reflectionProvider->getFunction($functionName, $scope);
+
+					/** @var string $calledFunctionName */
+					$calledFunctionName = $this->reflectionProvider->resolveFunctionName($functionName, $scope);
+					if (
+						strtolower($function->getName()) === strtolower($calledFunctionName)
+						&& $function->getName() !== $calledFunctionName
+					) {
+						return [
+							RuleErrorBuilder::message(sprintf(
+								'Call to function %s() with incorrect case: %s',
+								$function->getName(),
+								$functionNameName,
+							))->identifier('function.nameCase')->build(),
+						];
+					}
+				}
+
+				return [];
+			}
+
+			if ($scope->isInFunctionExists($functionNameName)) {
+				return [];
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf('Function %s not found.', $functionNameName))
+					->identifier('function.notFound')
+					->build(),
+			];
+		}
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $functionName),
+			'Creating callable from an unknown class %s.',
+			static fn (Type $type): bool => $type->isCallable()->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$isCallable = $type->isCallable();
+		if ($isCallable->no()) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Creating callable from %s but it\'s not a callable.', $type->describe(VerbosityLevel::value())),
+				)->identifier('callable.nonCallable')->build(),
+			];
+		}
+		if ($this->reportMaybes && $isCallable->maybe()) {
+			return [
+				RuleErrorBuilder::message(
+					sprintf('Creating callable from %s but it might not be a callable.', $type->describe(VerbosityLevel::value())),
+				)->identifier('callable.nonCallable')->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/ImplodeParameterCastableToStringRule.php b/src/Rules/Functions/ImplodeParameterCastableToStringRule.php
new file mode 100644
index 00000000..cb9a850d
--- /dev/null
+++ b/src/Rules/Functions/ImplodeParameterCastableToStringRule.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ParameterCastableToStringCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function array_key_exists;
+use function count;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ImplodeParameterCastableToStringRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ParameterCastableToStringCheck $parameterCastableToStringCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$functionName = $functionReflection->getName();
+		if (!in_array($functionName, ['implode', 'join'], true)) {
+			return [];
+		}
+
+		$origArgs = $node->getArgs();
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$origArgs,
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+
+		if ($normalizedFuncCall === null) {
+			return [];
+		}
+
+		$normalizedArgs = $normalizedFuncCall->getArgs();
+		$errorMessage = 'Parameter %s of function %s expects array<string>, %s given.';
+		if (count($normalizedArgs) === 1) {
+			$argsToCheck = [0 => $normalizedArgs[0]];
+		} elseif (count($normalizedArgs) === 2) {
+			$argsToCheck = [1 => $normalizedArgs[1]];
+		} else {
+			return [];
+		}
+
+		$origNamedArgs = [];
+		foreach ($origArgs as $arg) {
+			if ($arg->unpack || $arg->name === null) {
+				continue;
+			}
+
+			$origNamedArgs[$arg->name->toString()] = $arg;
+		}
+
+		$errors = [];
+
+		foreach ($argsToCheck as $argIdx => $arg) {
+			// implode has weird variants, so $array has to be fixed. It's especially weird with named arguments.
+			if (array_key_exists('array', $origNamedArgs)) {
+				$argName = '$array';
+			} elseif (array_key_exists('separator', $origNamedArgs) && count($origArgs) === 1) {
+				$argName = '$separator';
+			} else {
+				$argName = sprintf('#%d $array', $argIdx + 1);
+			}
+
+			$error = $this->parameterCastableToStringCheck->checkParameter(
+				$arg,
+				$scope,
+				$errorMessage,
+				static fn (Type $t) => $t->toString(),
+				$functionName,
+				$argName,
+			);
+
+			if ($error === null) {
+				continue;
+			}
+
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/IncompatibleArrowFunctionDefaultParameterTypeRule.php b/src/Rules/Functions/IncompatibleArrowFunctionDefaultParameterTypeRule.php
new file mode 100644
index 00000000..9a122d2a
--- /dev/null
+++ b/src/Rules/Functions/IncompatibleArrowFunctionDefaultParameterTypeRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InArrowFunctionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<InArrowFunctionNode>
+ */
+final class IncompatibleArrowFunctionDefaultParameterTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InArrowFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$parameters = $node->getClosureType()->getParameters();
+
+		$errors = [];
+		foreach ($node->getOriginalNode()->getParams() as $paramI => $param) {
+			if ($param->default === null) {
+				continue;
+			}
+			if (
+				$param->var instanceof Node\Expr\Error
+				|| !is_string($param->var->name)
+			) {
+				throw new ShouldNotHappenException();
+			}
+
+			$defaultValueType = $scope->getType($param->default);
+			$parameterType = $parameters[$paramI]->getType();
+			$parameterType = TemplateTypeHelper::resolveToBounds($parameterType);
+
+			$accepts = $parameterType->accepts($defaultValueType, true);
+			if ($accepts->yes()) {
+				continue;
+			}
+
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($parameterType, $defaultValueType);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Default value of the parameter #%d $%s (%s) of anonymous function is incompatible with type %s.',
+				$paramI + 1,
+				$param->var->name,
+				$defaultValueType->describe($verbosityLevel),
+				$parameterType->describe($verbosityLevel),
+			))
+				->line($param->getStartLine())
+				->identifier('parameter.defaultValue')
+				->acceptsReasonsTip($accepts->reasons)
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/IncompatibleClosureDefaultParameterTypeRule.php b/src/Rules/Functions/IncompatibleClosureDefaultParameterTypeRule.php
new file mode 100644
index 00000000..e5ba29bd
--- /dev/null
+++ b/src/Rules/Functions/IncompatibleClosureDefaultParameterTypeRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClosureNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<InClosureNode>
+ */
+final class IncompatibleClosureDefaultParameterTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClosureNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$parameters = $node->getClosureType()->getParameters();
+
+		$errors = [];
+		foreach ($node->getOriginalNode()->getParams() as $paramI => $param) {
+			if ($param->default === null) {
+				continue;
+			}
+			if (
+				$param->var instanceof Node\Expr\Error
+				|| !is_string($param->var->name)
+			) {
+				throw new ShouldNotHappenException();
+			}
+
+			$defaultValueType = $scope->getType($param->default);
+			$parameterType = $parameters[$paramI]->getType();
+			$parameterType = TemplateTypeHelper::resolveToBounds($parameterType);
+
+			$accepts = $parameterType->accepts($defaultValueType, true);
+			if ($accepts->yes()) {
+				continue;
+			}
+
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($parameterType, $defaultValueType);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Default value of the parameter #%d $%s (%s) of anonymous function is incompatible with type %s.',
+				$paramI + 1,
+				$param->var->name,
+				$defaultValueType->describe($verbosityLevel),
+				$parameterType->describe($verbosityLevel),
+			))
+				->line($param->getStartLine())
+				->identifier('parameter.defaultValue')
+				->acceptsReasonsTip($accepts->reasons)
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/IncompatibleDefaultParameterTypeRule.php b/src/Rules/Functions/IncompatibleDefaultParameterTypeRule.php
new file mode 100644
index 00000000..17185188
--- /dev/null
+++ b/src/Rules/Functions/IncompatibleDefaultParameterTypeRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class IncompatibleDefaultParameterTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$function = $node->getFunctionReflection();
+		$errors = [];
+		foreach ($node->getOriginalNode()->getParams() as $paramI => $param) {
+			if ($param->default === null) {
+				continue;
+			}
+			if (
+				$param->var instanceof Node\Expr\Error
+				|| !is_string($param->var->name)
+			) {
+				throw new ShouldNotHappenException();
+			}
+
+			$defaultValueType = $scope->getType($param->default);
+			$parameterType = $function->getParameters()[$paramI]->getType();
+			$parameterType = TemplateTypeHelper::resolveToBounds($parameterType);
+
+			$accepts = $parameterType->accepts($defaultValueType, true);
+			if ($accepts->yes()) {
+				continue;
+			}
+
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($parameterType, $defaultValueType);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Default value of the parameter #%d $%s (%s) of function %s() is incompatible with type %s.',
+				$paramI + 1,
+				$param->var->name,
+				$defaultValueType->describe($verbosityLevel),
+				$function->getName(),
+				$parameterType->describe($verbosityLevel),
+			))
+				->line($param->getStartLine())
+				->identifier('parameter.defaultValue')
+				->acceptsReasonsTip($accepts->reasons)
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/InnerFunctionRule.php b/src/Rules/Functions/InnerFunctionRule.php
new file mode 100644
index 00000000..8816b876
--- /dev/null
+++ b/src/Rules/Functions/InnerFunctionRule.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\Function_>
+ */
+final class InnerFunctionRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Function_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->getFunction() === null) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				'Inner named functions are not supported by PHPStan. Consider refactoring to an anonymous function, class method, or a top-level-defined function. See issue #165 (https://github.com/phpstan/phpstan/issues/165) for more details.',
+			)->identifier('function.inner')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Functions/InvalidLexicalVariablesInClosureUseRule.php b/src/Rules/Functions/InvalidLexicalVariablesInClosureUseRule.php
new file mode 100644
index 00000000..c3e579fe
--- /dev/null
+++ b/src/Rules/Functions/InvalidLexicalVariablesInClosureUseRule.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_filter;
+use function array_map;
+use function in_array;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Closure>
+ */
+final class InvalidLexicalVariablesInClosureUseRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Closure::class;
+	}
+
+	/**
+	 * @param Node\Expr\Closure $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		$params = array_filter(array_map(
+			static function (Node\Param $param) {
+				if (!$param->var instanceof Node\Expr\Variable) {
+					return false;
+				}
+
+				if (!is_string($param->var->name)) {
+					return false;
+				}
+
+				return $param->var->name;
+			},
+			$node->getParams(),
+		), static fn ($name) => $name !== false);
+
+		foreach ($node->uses as $use) {
+			if (!is_string($use->var->name)) {
+				continue;
+			}
+
+			$var = $use->var->name;
+
+			if ($var === 'this') {
+				$errors[] = RuleErrorBuilder::message('Cannot use $this as lexical variable.')
+					->line($use->getStartLine())
+					->identifier('closure.useThis')
+					->nonIgnorable()
+					->build();
+				continue;
+			}
+
+			if (in_array($var, Scope::SUPERGLOBAL_VARIABLES, true)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Cannot use superglobal variable $%s as lexical variable.', $var))
+					->line($use->getStartLine())
+					->identifier('closure.useSuperGlobal')
+					->nonIgnorable()
+					->build();
+				continue;
+			}
+
+			if (!in_array($var, $params, true)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Cannot use lexical variable $%s since a parameter with the same name already exists.', $var))
+				->line($use->getStartLine())
+				->identifier('closure.useDuplicate')
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/MissingFunctionParameterTypehintRule.php b/src/Rules/Functions/MissingFunctionParameterTypehintRule.php
new file mode 100644
index 00000000..4a2b5ecf
--- /dev/null
+++ b/src/Rules/Functions/MissingFunctionParameterTypehintRule.php
@@ -0,0 +1,117 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class MissingFunctionParameterTypehintRule implements Rule
+{
+
+	public function __construct(
+		private MissingTypehintCheck $missingTypehintCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functionReflection = $node->getFunctionReflection();
+		$messages = [];
+
+		foreach ($functionReflection->getParameters() as $parameterReflection) {
+			foreach ($this->checkFunctionParameter($functionReflection, sprintf('parameter $%s', $parameterReflection->getName()), $parameterReflection->getType()) as $parameterMessage) {
+				$messages[] = $parameterMessage;
+			}
+
+			if ($parameterReflection->getClosureThisType() !== null) {
+				foreach ($this->checkFunctionParameter($functionReflection, sprintf('@param-closure-this PHPDoc tag for parameter $%s', $parameterReflection->getName()), $parameterReflection->getClosureThisType()) as $parameterMessage) {
+					$messages[] = $parameterMessage;
+				}
+			}
+
+			if ($parameterReflection->getOutType() === null) {
+				continue;
+			}
+
+			foreach ($this->checkFunctionParameter($functionReflection, sprintf('@param-out PHPDoc tag for parameter $%s', $parameterReflection->getName()), $parameterReflection->getOutType()) as $parameterMessage) {
+				$messages[] = $parameterMessage;
+			}
+		}
+
+		return $messages;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkFunctionParameter(FunctionReflection $functionReflection, string $parameterMessage, Type $parameterType): array
+	{
+		if ($parameterType instanceof MixedType && !$parameterType->isExplicitMixed()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Function %s() has %s with no type specified.',
+					$functionReflection->getName(),
+					$parameterMessage,
+				))->identifier('missingType.parameter')->build(),
+			];
+		}
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($parameterType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() has %s with no value type specified in iterable type %s.',
+				$functionReflection->getName(),
+				$parameterMessage,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($parameterType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() has %s with generic %s but does not specify its types: %s',
+				$functionReflection->getName(),
+				$parameterMessage,
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($parameterType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() has %s with no signature specified for %s.',
+				$functionReflection->getName(),
+				$parameterMessage,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Functions/MissingFunctionReturnTypehintRule.php b/src/Rules/Functions/MissingFunctionReturnTypehintRule.php
new file mode 100644
index 00000000..9b064b24
--- /dev/null
+++ b/src/Rules/Functions/MissingFunctionReturnTypehintRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class MissingFunctionReturnTypehintRule implements Rule
+{
+
+	public function __construct(
+		private MissingTypehintCheck $missingTypehintCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functionReflection = $node->getFunctionReflection();
+		$returnType = $functionReflection->getReturnType();
+
+		if ($returnType instanceof MixedType && !$returnType->isExplicitMixed()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Function %s() has no return type specified.',
+					$functionReflection->getName(),
+				))->identifier('missingType.return')->build(),
+			];
+		}
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($returnType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf('Function %s() return type has no value type specified in iterable type %s.', $functionReflection->getName(), $iterableTypeDescription))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($returnType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() return type with generic %s does not specify its types: %s',
+				$functionReflection->getName(),
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($returnType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() return type has no signature specified for %s.',
+				$functionReflection->getName(),
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Functions/ParamAttributesRule.php b/src/Rules/Functions/ParamAttributesRule.php
new file mode 100644
index 00000000..3706f232
--- /dev/null
+++ b/src/Rules/Functions/ParamAttributesRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Param>
+ */
+final class ParamAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Param::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$targetName = 'parameter';
+		$targetType = Attribute::TARGET_PARAMETER;
+		if ($node->flags !== 0) {
+			$targetName = 'parameter or property';
+			$targetType |= Attribute::TARGET_PROPERTY;
+		}
+
+		return $this->attributesCheck->check(
+			$scope,
+			$node->attrGroups,
+			$targetType,
+			$targetName,
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/ParameterCastableToNumberRule.php b/src/Rules/Functions/ParameterCastableToNumberRule.php
new file mode 100644
index 00000000..44d033b2
--- /dev/null
+++ b/src/Rules/Functions/ParameterCastableToNumberRule.php
@@ -0,0 +1,85 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ParameterCastableToStringCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ParameterCastableToNumberRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ParameterCastableToStringCheck $parameterCastableToStringCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$functionName = $functionReflection->getName();
+
+		if (!in_array($functionName, ['array_sum', 'array_product'], true)) {
+			return [];
+		}
+
+		$origArgs = $node->getArgs();
+
+		if (count($origArgs) !== 1) {
+			return [];
+		}
+
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$origArgs,
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$errorMessage = 'Parameter %s of function %s expects an array of values castable to number, %s given.';
+		$functionParameters = $parametersAcceptor->getParameters();
+		$error = $this->parameterCastableToStringCheck->checkParameter(
+			$origArgs[0],
+			$scope,
+			$errorMessage,
+			static fn (Type $t) => $t->toNumber(),
+			$functionName,
+			$this->parameterCastableToStringCheck->getParameterName(
+				$origArgs[0],
+				0,
+				$functionParameters[0] ?? null,
+			),
+		);
+
+		return $error !== null
+			? [$error]
+			: [];
+	}
+
+}
diff --git a/src/Rules/Functions/ParameterCastableToStringRule.php b/src/Rules/Functions/ParameterCastableToStringRule.php
new file mode 100644
index 00000000..cee2b33e
--- /dev/null
+++ b/src/Rules/Functions/ParameterCastableToStringRule.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ParameterCastableToStringCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function array_key_exists;
+use function in_array;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class ParameterCastableToStringRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ParameterCastableToStringCheck $parameterCastableToStringCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$functionName = $functionReflection->getName();
+		$checkAllArgsFunctions = ['array_intersect', 'array_intersect_assoc', 'array_diff', 'array_diff_assoc'];
+		$checkFirstArgFunctions = [
+			'array_combine',
+			'natcasesort',
+			'natsort',
+			'array_count_values',
+			'array_fill_keys',
+		];
+
+		if (
+			!in_array($functionName, $checkAllArgsFunctions, true)
+			&& !in_array($functionName, $checkFirstArgFunctions, true)
+		) {
+			return [];
+		}
+
+		$origArgs = $node->getArgs();
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$origArgs,
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$errorMessage = 'Parameter %s of function %s expects an array of values castable to string, %s given.';
+		$functionParameters = $parametersAcceptor->getParameters();
+
+		if (in_array($functionName, $checkAllArgsFunctions, true)) {
+			$argsToCheck = $origArgs;
+		} elseif (in_array($functionName, $checkFirstArgFunctions, true)) {
+			$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+
+			if ($normalizedFuncCall === null) {
+				return [];
+			}
+
+			$normalizedArgs = $normalizedFuncCall->getArgs();
+			if (!array_key_exists(0, $normalizedArgs)) {
+				return [];
+			}
+			$argsToCheck = [0 => $normalizedArgs[0]];
+		} else {
+			return [];
+		}
+
+		$errors = [];
+
+		foreach ($argsToCheck as $argIdx => $arg) {
+			$error = $this->parameterCastableToStringCheck->checkParameter(
+				$arg,
+				$scope,
+				$errorMessage,
+				static fn (Type $t) => $t->toString(),
+				$functionName,
+				$this->parameterCastableToStringCheck->getParameterName(
+					$arg,
+					$argIdx,
+					$functionParameters[$argIdx] ?? null,
+				),
+			);
+
+			if ($error === null) {
+				continue;
+			}
+
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/PrintfArrayParametersRule.php b/src/Rules/Functions/PrintfArrayParametersRule.php
new file mode 100644
index 00000000..bf20f270
--- /dev/null
+++ b/src/Rules/Functions/PrintfArrayParametersRule.php
@@ -0,0 +1,189 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+use function max;
+use function min;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class PrintfArrayParametersRule implements Rule
+{
+
+	public function __construct(
+		private PrintfHelper $printfHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$name = $functionReflection->getName();
+		if (!in_array($name, ['vprintf', 'vsprintf'], true)) {
+			return [];
+		}
+
+		$args = $node->getArgs();
+		$argsCount = count($args);
+		if ($argsCount < 1) {
+			return []; // caught by CallToFunctionParametersRule
+		}
+
+		$formatArgType = $scope->getType($args[0]->value);
+		$placeHoldersCounts = [];
+		foreach ($formatArgType->getConstantStrings() as $formatString) {
+			$format = $formatString->getValue();
+
+			$placeHoldersCounts[] = $this->printfHelper->getPrintfPlaceholdersCount($format);
+		}
+
+		if ($placeHoldersCounts === []) {
+			return [];
+		}
+
+		$minCount = min($placeHoldersCounts);
+		$maxCount = max($placeHoldersCounts);
+		if ($minCount === $maxCount) {
+			$placeHoldersCount = new ConstantIntegerType($minCount);
+		} else {
+			$placeHoldersCount = IntegerRangeType::fromInterval($minCount, $maxCount);
+
+			if (!$placeHoldersCount instanceof IntegerRangeType && !$placeHoldersCount instanceof ConstantIntegerType) {
+				return [];
+			}
+		}
+
+		$formatArgsCounts = [];
+		if (isset($args[1])) {
+			$formatArgsType = $scope->getType($args[1]->value);
+
+			$constantArrays = $formatArgsType->getConstantArrays();
+			if ($constantArrays === []) {
+				$formatArgsCounts[] = new IntegerType();
+			}
+			foreach ($constantArrays as $constantArray) {
+				$formatArgsCounts[] = $constantArray->getArraySize();
+			}
+		}
+
+		if ($formatArgsCounts === []) {
+			$formatArgsCount = new ConstantIntegerType(0);
+		} else {
+			$formatArgsCount = TypeCombinator::union(...$formatArgsCounts);
+
+			if (!$formatArgsCount instanceof IntegerRangeType && !$formatArgsCount instanceof ConstantIntegerType) {
+				return [];
+			}
+		}
+
+		if (!$this->placeholdersMatchesArgsCount($placeHoldersCount, $formatArgsCount)) {
+
+			if ($placeHoldersCount instanceof IntegerRangeType) {
+				$placeholders = $this->getIntegerRangeAsString($placeHoldersCount);
+				$singlePlaceholder = false;
+			} else {
+				$placeholders = $placeHoldersCount->getValue();
+				$singlePlaceholder = $placeholders === 1;
+			}
+
+			if ($formatArgsCount instanceof IntegerRangeType) {
+				$values = $this->getIntegerRangeAsString($formatArgsCount);
+				$singleValue = false;
+			} else {
+				$values = $formatArgsCount->getValue();
+				$singleValue = $values === 1;
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					sprintf(
+						'%s, %s.',
+						$singlePlaceholder ? 'Call to %s contains %d placeholder' : 'Call to %s contains %s placeholders',
+						$singleValue ? '%d value given' : '%s values given',
+					),
+					$name,
+					$placeholders,
+					$values,
+				))->identifier(sprintf('argument.%s', $name))->build(),
+			];
+		}
+
+		return [];
+	}
+
+	private function placeholdersMatchesArgsCount(ConstantIntegerType|IntegerRangeType $placeHoldersCount, ConstantIntegerType|IntegerRangeType $formatArgsCount): bool
+	{
+		if ($placeHoldersCount instanceof ConstantIntegerType) {
+			if ($formatArgsCount instanceof ConstantIntegerType) {
+				return $placeHoldersCount->getValue() === $formatArgsCount->getValue();
+			}
+
+			// Zero placeholders + array
+			if ($placeHoldersCount->getValue() === 0) {
+				return true;
+			}
+
+			return false;
+		}
+
+		if (
+			$formatArgsCount instanceof IntegerRangeType
+			&& IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($placeHoldersCount)->yes()
+		) {
+			if ($formatArgsCount->getMin() !== null && $formatArgsCount->getMax() !== null) {
+				// constant array
+				return $placeHoldersCount->isSuperTypeOf($formatArgsCount)->yes();
+			}
+
+			// general array
+			return IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($formatArgsCount)->yes();
+		}
+
+		return false;
+	}
+
+	private function getIntegerRangeAsString(IntegerRangeType $range): string
+	{
+		if ($range->getMin() !== null && $range->getMax() !== null) {
+			return $range->getMin() . '-' . $range->getMax();
+		} elseif ($range->getMin() !== null) {
+			return $range->getMin() . ' or more';
+		} elseif ($range->getMax() !== null) {
+			return $range->getMax() . ' or less';
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Rules/Functions/PrintfHelper.php b/src/Rules/Functions/PrintfHelper.php
new file mode 100644
index 00000000..88ea4952
--- /dev/null
+++ b/src/Rules/Functions/PrintfHelper.php
@@ -0,0 +1,76 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Php\PhpVersion;
+use function array_filter;
+use function count;
+use function max;
+use function sprintf;
+use function strlen;
+use const PREG_SET_ORDER;
+
+final class PrintfHelper
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getPrintfPlaceholdersCount(string $format): int
+	{
+		return $this->getPlaceholdersCount('(?:[bs%s]|l?[cdeEgfFGouxX])', $format);
+	}
+
+	public function getScanfPlaceholdersCount(string $format): int
+	{
+		return $this->getPlaceholdersCount('(?:[cdDeEfinosuxX%s]|\[[^\]]+\])', $format);
+	}
+
+	private function getPlaceholdersCount(string $specifiersPattern, string $format): int
+	{
+		$addSpecifier = '';
+		if ($this->phpVersion->supportsHhPrintfSpecifier()) {
+			$addSpecifier .= 'hH';
+		}
+
+		$specifiers = sprintf($specifiersPattern, $addSpecifier);
+
+		$pattern = '~(?<before>%*)%(?:(?<position>\d+)\$)?[-+]?(?:[ 0]|(?:\'[^%]))?(?<width>\*)?-?\d*(?:\.(?:\d+|(?<precision>\*))?)?' . $specifiers . '~';
+
+		$matches = Strings::matchAll($format, $pattern, PREG_SET_ORDER);
+
+		if (count($matches) === 0) {
+			return 0;
+		}
+
+		$placeholders = array_filter($matches, static fn (array $match): bool => strlen($match['before']) % 2 === 0);
+
+		if (count($placeholders) === 0) {
+			return 0;
+		}
+
+		$maxPositionedNumber = 0;
+		$maxOrdinaryNumber = 0;
+		foreach ($placeholders as $placeholder) {
+			if (isset($placeholder['width']) && $placeholder['width'] !== '') {
+				$maxOrdinaryNumber++;
+			}
+
+			if (isset($placeholder['precision']) && $placeholder['precision'] !== '') {
+				$maxOrdinaryNumber++;
+			}
+
+			if (isset($placeholder['position']) && $placeholder['position'] !== '') {
+				$maxPositionedNumber = max((int) $placeholder['position'], $maxPositionedNumber);
+			} else {
+				$maxOrdinaryNumber++;
+			}
+		}
+
+		return max($maxPositionedNumber, $maxOrdinaryNumber);
+	}
+
+}
diff --git a/src/Rules/Functions/PrintfParametersRule.php b/src/Rules/Functions/PrintfParametersRule.php
new file mode 100644
index 00000000..31d4b920
--- /dev/null
+++ b/src/Rules/Functions/PrintfParametersRule.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function count;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class PrintfParametersRule implements Rule
+{
+
+	private const FORMAT_ARGUMENT_POSITIONS = [
+		'printf' => 0,
+		'sprintf' => 0,
+		'sscanf' => 1,
+		'fscanf' => 1,
+	];
+	private const MINIMUM_NUMBER_OF_ARGUMENTS = [
+		'printf' => 1,
+		'sprintf' => 1,
+		'sscanf' => 3,
+		'fscanf' => 3,
+	];
+
+	public function __construct(
+		private PrintfHelper $printfHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$name = $functionReflection->getName();
+		if (!array_key_exists($name, self::FORMAT_ARGUMENT_POSITIONS)) {
+			return [];
+		}
+
+		$formatArgumentPosition = self::FORMAT_ARGUMENT_POSITIONS[$name];
+
+		$args = $node->getArgs();
+		foreach ($args as $arg) {
+			if ($arg->unpack) {
+				return [];
+			}
+		}
+		$argsCount = count($args);
+		if ($argsCount < self::MINIMUM_NUMBER_OF_ARGUMENTS[$name]) {
+			return []; // caught by CallToFunctionParametersRule
+		}
+
+		$formatArgType = $scope->getType($args[$formatArgumentPosition]->value);
+		$maxPlaceHoldersCount = null;
+		foreach ($formatArgType->getConstantStrings() as $formatString) {
+			$format = $formatString->getValue();
+
+			if (in_array($name, ['sprintf', 'printf'], true)) {
+				$tempPlaceHoldersCount = $this->printfHelper->getPrintfPlaceholdersCount($format);
+			} else {
+				$tempPlaceHoldersCount = $this->printfHelper->getScanfPlaceholdersCount($format);
+			}
+
+			if ($maxPlaceHoldersCount === null) {
+				$maxPlaceHoldersCount = $tempPlaceHoldersCount;
+			} elseif ($tempPlaceHoldersCount > $maxPlaceHoldersCount) {
+				$maxPlaceHoldersCount = $tempPlaceHoldersCount;
+			}
+		}
+
+		if ($maxPlaceHoldersCount === null) {
+			return [];
+		}
+
+		$argsCount -= $formatArgumentPosition;
+
+		if ($argsCount !== $maxPlaceHoldersCount + 1) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					sprintf(
+						'%s, %s.',
+						$maxPlaceHoldersCount === 1 ? 'Call to %s contains %d placeholder' : 'Call to %s contains %d placeholders',
+						$argsCount - 1 === 1 ? '%d value given' : '%d values given',
+					),
+					$name,
+					$maxPlaceHoldersCount,
+					$argsCount - 1,
+				))->identifier(sprintf('argument.%s', $name))->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/RandomIntParametersRule.php b/src/Rules/Functions/RandomIntParametersRule.php
new file mode 100644
index 00000000..d12f3ecc
--- /dev/null
+++ b/src/Rules/Functions/RandomIntParametersRule.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\VerbosityLevel;
+use function array_values;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class RandomIntParametersRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private PhpVersion $phpVersion,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if ($this->reflectionProvider->resolveFunctionName($node->name, $scope) !== 'random_int') {
+			return [];
+		}
+
+		$args = array_values($node->getArgs());
+		if (count($args) < 2) {
+			return [];
+		}
+
+		$minType = $scope->getType($args[0]->value)->toInteger();
+		$maxType = $scope->getType($args[1]->value)->toInteger();
+
+		if (
+			!$minType instanceof ConstantIntegerType && !$minType instanceof IntegerRangeType
+			|| !$maxType instanceof ConstantIntegerType && !$maxType instanceof IntegerRangeType
+		) {
+			return [];
+		}
+
+		$isSmaller = $maxType->isSmallerThan($minType, $this->phpVersion);
+
+		if ($isSmaller->yes() || $isSmaller->maybe() && $this->reportMaybes) {
+			$message = 'Parameter #1 $min (%s) of function random_int expects lower number than parameter #2 $max (%s).';
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$message,
+					$minType->describe(VerbosityLevel::value()),
+					$maxType->describe(VerbosityLevel::value()),
+				))->identifier('argument.type')->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/RedefinedParametersRule.php b/src/Rules/Functions/RedefinedParametersRule.php
new file mode 100644
index 00000000..b3159ddc
--- /dev/null
+++ b/src/Rules/Functions/RedefinedParametersRule.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\FunctionLike>
+ */
+final class RedefinedParametersRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\FunctionLike::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$params = $node->getParams();
+
+		if (count($params) <= 1) {
+			return [];
+		}
+
+		$vars = [];
+		$errors = [];
+
+		foreach ($params as $param) {
+			if (!$param->var instanceof Node\Expr\Variable) {
+				continue;
+			}
+
+			if (!is_string($param->var->name)) {
+				continue;
+			}
+
+			$var = $param->var->name;
+
+			if (!isset($vars[$var])) {
+				$vars[$var] = true;
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Redefinition of parameter $%s.', $var))
+				->identifier('parameter.duplicate')
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/ReturnNullsafeByRefRule.php b/src/Rules/Functions/ReturnNullsafeByRefRule.php
new file mode 100644
index 00000000..555232ba
--- /dev/null
+++ b/src/Rules/Functions/ReturnNullsafeByRefRule.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ReturnStatementsNode;
+use PHPStan\Rules\NullsafeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<ReturnStatementsNode>
+ */
+final class ReturnNullsafeByRefRule implements Rule
+{
+
+	public function __construct(private NullsafeCheck $nullsafeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->returnsByRef()) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($node->getReturnStatements() as $returnStatement) {
+			$returnNode = $returnStatement->getReturnNode();
+			if ($returnNode->expr === null) {
+				continue;
+			}
+
+			if (!$this->nullsafeCheck->containsNullSafe($returnNode->expr)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message('Nullsafe cannot be returned by reference.')
+				->line($returnNode->getStartLine())
+				->identifier('nullsafe.byRef')
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/ReturnTypeRule.php b/src/Rules/Functions/ReturnTypeRule.php
new file mode 100644
index 00000000..c5290287
--- /dev/null
+++ b/src/Rules/Functions/ReturnTypeRule.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Return_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\FunctionReturnTypeCheck;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Return_>
+ */
+final class ReturnTypeRule implements Rule
+{
+
+	public function __construct(
+		private FunctionReturnTypeCheck $returnTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Return_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->getFunction() === null) {
+			return [];
+		}
+
+		if ($scope->isInAnonymousFunction()) {
+			return [];
+		}
+
+		$function = $scope->getFunction();
+		if ($function instanceof MethodReflection) {
+			return [];
+		}
+
+		return $this->returnTypeCheck->checkReturnType(
+			$scope,
+			$function->getReturnType(),
+			$node->expr,
+			$node,
+			sprintf(
+				'Function %s() should return %%s but empty return statement found.',
+				$function->getName(),
+			),
+			sprintf(
+				'Function %s() with return type void returns %%s but should not return anything.',
+				$function->getName(),
+			),
+			sprintf(
+				'Function %s() should return %%s but returns %%s.',
+				$function->getName(),
+			),
+			sprintf(
+				'Function %s() should never return but return statement found.',
+				$function->getName(),
+			),
+			$function->isGenerator(),
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/SortParameterCastableToStringRule.php b/src/Rules/Functions/SortParameterCastableToStringRule.php
new file mode 100644
index 00000000..9676d69d
--- /dev/null
+++ b/src/Rules/Functions/SortParameterCastableToStringRule.php
@@ -0,0 +1,151 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ParameterCastableToStringCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use function array_key_exists;
+use function in_array;
+use const SORT_FLAG_CASE;
+use const SORT_LOCALE_STRING;
+use const SORT_NATURAL;
+use const SORT_NUMERIC;
+use const SORT_REGULAR;
+use const SORT_STRING;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class SortParameterCastableToStringRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ParameterCastableToStringCheck $parameterCastableToStringCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->name instanceof Node\Name)) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		$functionName = $functionReflection->getName();
+
+		if (!in_array($functionName, ['array_unique', 'sort', 'rsort', 'asort', 'arsort'], true)) {
+			return [];
+		}
+
+		$origArgs = $node->getArgs();
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$origArgs,
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$functionParameters = $parametersAcceptor->getParameters();
+
+		$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $node);
+
+		if ($normalizedFuncCall === null) {
+			return [];
+		}
+
+		$normalizedArgs = $normalizedFuncCall->getArgs();
+		if (!array_key_exists(0, $normalizedArgs)) {
+			return [];
+		}
+
+		$argsToCheck = [0 => $normalizedArgs[0]];
+		$flags = null;
+		if (array_key_exists(1, $normalizedArgs)) {
+			$flags = $scope->getType($normalizedArgs[1]->value);
+		} elseif (array_key_exists(1, $functionParameters)) {
+			$flags = $functionParameters[1]->getDefaultValue();
+		}
+
+		if ($flags === null || $flags->equals(new ConstantIntegerType(SORT_REGULAR))) {
+			return [];
+		}
+
+		$constantIntFlags = TypeUtils::getConstantIntegers($flags);
+		$mustBeCastableToString = $mustBeCastableToFloat = $constantIntFlags === [];
+
+		foreach ($constantIntFlags as $flag) {
+			if ($flag->getValue() === SORT_NUMERIC) {
+				$mustBeCastableToFloat = true;
+			} elseif (in_array($flag->getValue() & (~SORT_FLAG_CASE), [SORT_STRING, SORT_LOCALE_STRING, SORT_NATURAL], true)) {
+				$mustBeCastableToString = true;
+			}
+		}
+
+		if ($mustBeCastableToString && !$mustBeCastableToFloat) {
+			$errorMessage = 'Parameter %s of function %s expects an array of values castable to string, %s given.';
+			$castFn = static fn (Type $t) => $t->toString();
+		} elseif ($mustBeCastableToString) {
+			$errorMessage = 'Parameter %s of function %s expects an array of values castable to string and float, %s given.';
+			$castFn = static function (Type $t): Type {
+				$float = $t->toFloat();
+
+				return $float instanceof ErrorType
+					? $float
+					: $t->toString();
+			};
+		} elseif ($mustBeCastableToFloat) {
+			$errorMessage = 'Parameter %s of function %s expects an array of values castable to float, %s given.';
+			$castFn = static fn (Type $t) => $t->toFloat();
+		} else {
+			return [];
+		}
+
+		$errors = [];
+
+		foreach ($argsToCheck as $argIdx => $arg) {
+			$error = $this->parameterCastableToStringCheck->checkParameter(
+				$arg,
+				$scope,
+				$errorMessage,
+				$castFn,
+				$functionName,
+				$this->parameterCastableToStringCheck->getParameterName(
+					$arg,
+					$argIdx,
+					$functionParameters[$argIdx] ?? null,
+				),
+			);
+
+			if ($error === null) {
+				continue;
+			}
+
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Functions/UnusedClosureUsesRule.php b/src/Rules/Functions/UnusedClosureUsesRule.php
new file mode 100644
index 00000000..e525a291
--- /dev/null
+++ b/src/Rules/Functions/UnusedClosureUsesRule.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\UnusedFunctionParametersCheck;
+use function array_map;
+use function count;
+
+/**
+ * @implements Rule<Node\Expr\Closure>
+ */
+final class UnusedClosureUsesRule implements Rule
+{
+
+	public function __construct(private UnusedFunctionParametersCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Closure::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (count($node->uses) === 0) {
+			return [];
+		}
+
+		return $this->check->getUnusedParameters(
+			$scope,
+			array_map(static fn (Node\ClosureUse $use): Node\Expr\Variable => $use->var, $node->uses),
+			$node->stmts,
+			'Anonymous function has an unused use $%s.',
+			'closure.unusedUse',
+		);
+	}
+
+}
diff --git a/src/Rules/Functions/UselessFunctionReturnValueRule.php b/src/Rules/Functions/UselessFunctionReturnValueRule.php
new file mode 100644
index 00000000..509acdea
--- /dev/null
+++ b/src/Rules/Functions/UselessFunctionReturnValueRule.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class UselessFunctionReturnValueRule implements Rule
+{
+
+	private const USELESS_FUNCTIONS = [
+		'var_export' => 'null',
+		'print_r' => 'true',
+		'highlight_string' => 'true',
+	];
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $funcCall, Scope $scope): array
+	{
+		if (!($funcCall->name instanceof Node\Name) || $scope->isInFirstLevelStatement()) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($funcCall->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($funcCall->name, $scope);
+
+		if (!array_key_exists($functionReflection->getName(), self::USELESS_FUNCTIONS)) {
+			return [];
+		}
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$funcCall->getArgs(),
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$reorderedFuncCall = ArgumentsNormalizer::reorderFuncArguments(
+			$parametersAcceptor,
+			$funcCall,
+		);
+
+		if ($reorderedFuncCall === null) {
+			return [];
+		}
+		$reorderedArgs = $reorderedFuncCall->getArgs();
+
+		if (count($reorderedArgs) === 1 || (count($reorderedArgs) >= 2 && $scope->getType($reorderedArgs[1]->value)->isFalse()->yes())) {
+			return [RuleErrorBuilder::message(
+				sprintf(
+					'Return value of function %s() is always %s and the result is printed instead of being returned. Pass in true as parameter #%d $%s to return the output instead.',
+					$functionReflection->getName(),
+					self::USELESS_FUNCTIONS[$functionReflection->getName()],
+					2,
+					$parametersAcceptor->getParameters()[1]->getName(),
+				),
+			)
+				->identifier('function.uselessReturnValue')
+				->line($funcCall->getStartLine())
+				->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Functions/VariadicParametersDeclarationRule.php b/src/Rules/Functions/VariadicParametersDeclarationRule.php
new file mode 100644
index 00000000..cdaba9a4
--- /dev/null
+++ b/src/Rules/Functions/VariadicParametersDeclarationRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Functions;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+
+/**
+ * @implements Rule<Node\FunctionLike>
+ */
+final class VariadicParametersDeclarationRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\FunctionLike::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$parameters = $node->getParams();
+		$paramCount = count($parameters);
+
+		if ($paramCount === 0) {
+			return [];
+		}
+
+		$errors = [];
+
+		foreach ($parameters as $index => $parameter) {
+			if (!$parameter->variadic) {
+				continue;
+			}
+
+			if ($paramCount - 1 === $index) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message('Only the last parameter can be variadic.')
+				->nonIgnorable()
+				->identifier('parameter.variadicNotLast')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Generators/YieldFromTypeRule.php b/src/Rules/Generators/YieldFromTypeRule.php
new file mode 100644
index 00000000..e8313a73
--- /dev/null
+++ b/src/Rules/Generators/YieldFromTypeRule.php
@@ -0,0 +1,146 @@
+<?php 
+
+namespace PHPStan\Rules\Generators;
+return;
+
+use Generator;
+use PhpParser\Node;
+use PhpParser\Node\Expr\YieldFrom;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\YieldFrom>
+ */
+final class YieldFromTypeRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return YieldFrom::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$exprType = $scope->getType($node->expr);
+		$isIterable = $exprType->isIterable();
+		$messagePattern = 'Argument of an invalid type %s passed to yield from, only iterables are supported.';
+		if ($isIterable->no()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$messagePattern,
+					$exprType->describe(VerbosityLevel::typeOnly()),
+				))
+					->line($node->expr->getStartLine())
+					->identifier('generator.nonIterable')
+					->build(),
+			];
+		} elseif (
+			!$exprType instanceof MixedType
+			&& $this->reportMaybes
+			&& $isIterable->maybe()
+		) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					$messagePattern,
+					$exprType->describe(VerbosityLevel::typeOnly()),
+				))
+					->line($node->expr->getStartLine())
+					->identifier('generator.nonIterable')
+					->build(),
+			];
+		}
+
+		$anonymousFunctionReturnType = $scope->getAnonymousFunctionReturnType();
+		$scopeFunction = $scope->getFunction();
+		if ($anonymousFunctionReturnType !== null) {
+			$returnType = $anonymousFunctionReturnType;
+		} elseif ($scopeFunction !== null) {
+			$returnType = $scopeFunction->getReturnType();
+		} else {
+			return []; // already reported by YieldInGeneratorRule
+		}
+
+		if ($returnType instanceof MixedType) {
+			return [];
+		}
+
+		$messages = [];
+		$acceptsKey = $this->ruleLevelHelper->accepts($returnType->getIterableKeyType(), $exprType->getIterableKeyType(), $scope->isDeclareStrictTypes());
+		if (!$acceptsKey->result) {
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType->getIterableKeyType(), $exprType->getIterableKeyType());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects key type %s, %s given.',
+				$returnType->getIterableKeyType()->describe($verbosityLevel),
+				$exprType->getIterableKeyType()->describe($verbosityLevel),
+			))
+				->line($node->expr->getStartLine())
+				->identifier('generator.keyType')
+				->acceptsReasonsTip($acceptsKey->reasons)
+				->build();
+		}
+
+		$acceptsValue = $this->ruleLevelHelper->accepts($returnType->getIterableValueType(), $exprType->getIterableValueType(), $scope->isDeclareStrictTypes());
+		if (!$acceptsValue->result) {
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType->getIterableValueType(), $exprType->getIterableValueType());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects value type %s, %s given.',
+				$returnType->getIterableValueType()->describe($verbosityLevel),
+				$exprType->getIterableValueType()->describe($verbosityLevel),
+			))
+				->line($node->expr->getStartLine())
+				->identifier('generator.valueType')
+				->acceptsReasonsTip($acceptsValue->reasons)
+				->build();
+		}
+
+		$scopeFunction = $scope->getFunction();
+		if ($scopeFunction === null) {
+			return $messages;
+		}
+
+		$currentReturnType = $scopeFunction->getReturnType();
+		$exprSendType = $exprType->getTemplateType(Generator::class, 'TSend');
+		$thisSendType = $currentReturnType->getTemplateType(Generator::class, 'TSend');
+		if ($exprSendType instanceof ErrorType || $thisSendType instanceof ErrorType) {
+			return $messages;
+		}
+
+		$isSuperType = $exprSendType->isSuperTypeOf($thisSendType);
+		if ($isSuperType->no()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects delegated TSend type %s, %s given.',
+				$exprSendType->describe(VerbosityLevel::typeOnly()),
+				$thisSendType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('generator.sendType')->build();
+		} elseif ($this->reportMaybes && !$isSuperType->yes()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects delegated TSend type %s, %s given.',
+				$exprSendType->describe(VerbosityLevel::typeOnly()),
+				$thisSendType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('generator.sendType')->build();
+		}
+
+		if (!$scope->isInFirstLevelStatement() && $scope->getType($node)->isVoid()->yes()) {
+			$messages[] = RuleErrorBuilder::message('Result of yield from (void) is used.')
+				->identifier('generator.void')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generators/YieldInGeneratorRule.php b/src/Rules/Generators/YieldInGeneratorRule.php
new file mode 100644
index 00000000..16b627b8
--- /dev/null
+++ b/src/Rules/Generators/YieldInGeneratorRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Generators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class YieldInGeneratorRule implements Rule
+{
+
+	public function __construct(private bool $reportMaybes)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node instanceof Node\Expr\Yield_ && !$node instanceof Node\Expr\YieldFrom) {
+			return [];
+		}
+
+		$anonymousFunctionReturnType = $scope->getAnonymousFunctionReturnType();
+		$scopeFunction = $scope->getFunction();
+		if ($anonymousFunctionReturnType !== null) {
+			$returnType = $anonymousFunctionReturnType;
+		} elseif ($scopeFunction !== null) {
+			$returnType = $scopeFunction->getReturnType();
+		} else {
+			return [
+				RuleErrorBuilder::message('Yield can be used only inside a function.')
+					->identifier('generator.outOfFunction')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		if ($returnType instanceof MixedType) {
+			return [];
+		}
+
+		if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+			$isSuperType = TrinaryLogic::createNo();
+		} else {
+			$isSuperType = $returnType->isIterable()->and(TrinaryLogic::createFromBoolean(
+				!$returnType->isArray()->yes(),
+			));
+		}
+		if ($isSuperType->yes()) {
+			return [];
+		}
+
+		if ($isSuperType->maybe() && !$this->reportMaybes) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Yield can be used only with these return types: %s.',
+				'Generator, Iterator, Traversable, iterable',
+			))->identifier('generator.returnType')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Generators/YieldTypeRule.php b/src/Rules/Generators/YieldTypeRule.php
new file mode 100644
index 00000000..11d77c57
--- /dev/null
+++ b/src/Rules/Generators/YieldTypeRule.php
@@ -0,0 +1,97 @@
+<?php 
+
+namespace PHPStan\Rules\Generators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Yield_>
+ */
+final class YieldTypeRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Yield_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$anonymousFunctionReturnType = $scope->getAnonymousFunctionReturnType();
+		$scopeFunction = $scope->getFunction();
+		if ($anonymousFunctionReturnType !== null) {
+			$returnType = $anonymousFunctionReturnType;
+		} elseif ($scopeFunction !== null) {
+			$returnType = $scopeFunction->getReturnType();
+		} else {
+			return []; // already reported by YieldInGeneratorRule
+		}
+
+		if ($returnType instanceof MixedType) {
+			return [];
+		}
+
+		if ($node->key === null) {
+			$keyType = new IntegerType();
+		} else {
+			$keyType = $scope->getType($node->key);
+		}
+
+		$messages = [];
+		$acceptsKey = $this->ruleLevelHelper->accepts($returnType->getIterableKeyType(), $keyType, $scope->isDeclareStrictTypes());
+		if (!$acceptsKey->result) {
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType->getIterableKeyType(), $keyType);
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects key type %s, %s given.',
+				$returnType->getIterableKeyType()->describe($verbosityLevel),
+				$keyType->describe($verbosityLevel),
+			))
+				->acceptsReasonsTip($acceptsKey->reasons)
+				->identifier('generator.keyType')
+				->build();
+		}
+
+		if ($node->value === null) {
+			$valueType = new NullType();
+		} else {
+			$valueType = $scope->getType($node->value);
+		}
+
+		$acceptsValue = $this->ruleLevelHelper->accepts($returnType->getIterableValueType(), $valueType, $scope->isDeclareStrictTypes());
+		if (!$acceptsValue->result) {
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($returnType->getIterableValueType(), $valueType);
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Generator expects value type %s, %s given.',
+				$returnType->getIterableValueType()->describe($verbosityLevel),
+				$valueType->describe($verbosityLevel),
+			))
+				->acceptsReasonsTip($acceptsValue->reasons)
+				->identifier('generator.valueType')
+				->build();
+		}
+		if (!$scope->isInFirstLevelStatement() && $scope->getType($node)->isVoid()->yes()) {
+			$messages[] = RuleErrorBuilder::message('Result of yield (void) is used.')
+				->identifier('generator.void')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generics/ClassAncestorsRule.php b/src/Rules/Generics/ClassAncestorsRule.php
new file mode 100644
index 00000000..88a1294c
--- /dev/null
+++ b/src/Rules/Generics/ClassAncestorsRule.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function array_map;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class ClassAncestorsRule implements Rule
+{
+
+	public function __construct(
+		private GenericAncestorsCheck $genericAncestorsCheck,
+		private CrossCheckInterfacesHelper $crossCheckInterfacesHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		if (!$originalNode instanceof Node\Stmt\Class_) {
+			return [];
+		}
+		$classReflection = $node->getClassReflection();
+		if ($classReflection->isAnonymous()) {
+			return [];
+		}
+		$className = $classReflection->getName();
+		$escapedClassName = SprintfHelper::escapeFormatString($className);
+
+		$extendsErrors = $this->genericAncestorsCheck->check(
+			$originalNode->extends !== null ? [$originalNode->extends] : [],
+			array_map(static fn (ExtendsTag $tag): Type => $tag->getType(), $classReflection->getExtendsTags()),
+			sprintf('Class %s @extends tag contains incompatible type %%s.', $escapedClassName),
+			sprintf('Class %s @extends tag contains unresolvable type.', $className),
+			sprintf('Class %s has @extends tag, but does not extend any class.', $escapedClassName),
+			sprintf('The @extends tag of class %s describes %%s but the class extends %%s.', $escapedClassName),
+			'PHPDoc tag @extends contains generic type %s but %s %s is not generic.',
+			'Generic type %s in PHPDoc tag @extends does not specify all template types of %s %s: %s',
+			'Generic type %s in PHPDoc tag @extends specifies %d template types, but %s %s supports only %d: %s',
+			'Type %s in generic type %s in PHPDoc tag @extends is not subtype of template type %s of %s %s.',
+			'Call-site variance annotation of %s in generic type %s in PHPDoc tag @extends is not allowed.',
+			'PHPDoc tag @extends has invalid type %s.',
+			sprintf('Class %s extends generic class %%s but does not specify its types: %%s', $escapedClassName),
+			sprintf('in extended type %%s of class %s', $escapedClassName),
+		);
+
+		$implementsErrors = $this->genericAncestorsCheck->check(
+			$originalNode->implements,
+			array_map(static fn (ImplementsTag $tag): Type => $tag->getType(), $classReflection->getImplementsTags()),
+			sprintf('Class %s @implements tag contains incompatible type %%s.', $escapedClassName),
+			sprintf('Class %s @implements tag contains unresolvable type.', $className),
+			sprintf('Class %s has @implements tag, but does not implement any interface.', $escapedClassName),
+			sprintf('The @implements tag of class %s describes %%s but the class implements: %%s', $escapedClassName),
+			'PHPDoc tag @implements contains generic type %s but %s %s is not generic.',
+			'Generic type %s in PHPDoc tag @implements does not specify all template types of %s %s: %s',
+			'Generic type %s in PHPDoc tag @implements specifies %d template types, but %s %s supports only %d: %s',
+			'Type %s in generic type %s in PHPDoc tag @implements is not subtype of template type %s of %s %s.',
+			'Call-site variance annotation of %s in generic type %s in PHPDoc tag @implements is not allowed.',
+			'PHPDoc tag @implements has invalid type %s.',
+			sprintf('Class %s implements generic interface %%s but does not specify its types: %%s', $escapedClassName),
+			sprintf('in implemented type %%s of class %s', $escapedClassName),
+		);
+
+		foreach ($this->crossCheckInterfacesHelper->check($classReflection) as $error) {
+			$implementsErrors[] = $error;
+		}
+
+		return array_merge($extendsErrors, $implementsErrors);
+	}
+
+}
diff --git a/src/Rules/Generics/ClassTemplateTypeRule.php b/src/Rules/Generics/ClassTemplateTypeRule.php
new file mode 100644
index 00000000..77ac03cd
--- /dev/null
+++ b/src/Rules/Generics/ClassTemplateTypeRule.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class ClassTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$classReflection->isClass()) {
+			return [];
+		}
+		$className = $classReflection->getName();
+		if ($classReflection->isAnonymous()) {
+			$displayName = 'anonymous class';
+		} else {
+			$displayName = 'class ' . SprintfHelper::escapeFormatString($classReflection->getDisplayName());
+		}
+
+		return $this->templateTypeCheck->check(
+			$scope,
+			$node,
+			TemplateTypeScope::createWithClass($className),
+			$classReflection->getTemplateTags(),
+			sprintf('PHPDoc tag @template for %s cannot have existing class %%s as its name.', $displayName),
+			sprintf('PHPDoc tag @template for %s cannot have existing type alias %%s as its name.', $displayName),
+			sprintf('PHPDoc tag @template %%s for %s has invalid bound type %%s.', $displayName),
+			sprintf('PHPDoc tag @template %%s for %s with bound type %%s is not supported.', $displayName),
+			sprintf('PHPDoc tag @template %%s for %s has invalid default type %%s.', $displayName),
+			sprintf('Default type %%s in PHPDoc tag @template %%s for %s is not subtype of bound type %%s.', $displayName),
+			sprintf('PHPDoc tag @template %%s for %s does not have a default type but follows an optional @template %%s.', $displayName),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/CrossCheckInterfacesHelper.php b/src/Rules/Generics/CrossCheckInterfacesHelper.php
new file mode 100644
index 00000000..51c5d53a
--- /dev/null
+++ b/src/Rules/Generics/CrossCheckInterfacesHelper.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function array_key_exists;
+use function sprintf;
+
+final class CrossCheckInterfacesHelper
+{
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(ClassReflection $classReflection): array
+	{
+		$interfaceTemplateTypeMaps = [];
+		$errors = [];
+		$check = static function (ClassReflection $classReflection, bool $first) use (&$interfaceTemplateTypeMaps, &$check, &$errors): void {
+			foreach ($classReflection->getInterfaces() as $interface) {
+				if (!$interface->isGeneric()) {
+					continue;
+				}
+
+				if (array_key_exists($interface->getName(), $interfaceTemplateTypeMaps)) {
+					$otherMap = $interfaceTemplateTypeMaps[$interface->getName()];
+					foreach ($interface->getActiveTemplateTypeMap()->getTypes() as $name => $type) {
+						$otherType = $otherMap->getType($name);
+						if ($otherType === null) {
+							continue;
+						}
+
+						if ($type->equals($otherType)) {
+							continue;
+						}
+
+						$errors[] = RuleErrorBuilder::message(sprintf(
+							'%s specifies template type %s of interface %s as %s but it\'s already specified as %s.',
+							$classReflection->isInterface() ? sprintf('Interface %s', $classReflection->getName()) : sprintf('Class %s', $classReflection->getName()),
+							$name,
+							$interface->getName(),
+							$type->describe(VerbosityLevel::value()),
+							$otherType->describe(VerbosityLevel::value()),
+						))->identifier('generics.interfaceConflict')->build();
+					}
+					continue;
+				}
+
+				$interfaceTemplateTypeMaps[$interface->getName()] = $interface->getActiveTemplateTypeMap();
+			}
+
+			$parent = $classReflection->getParentClass();
+			$checkParents = true;
+			if ($first && $parent !== null) {
+				$extendsTags = $classReflection->getExtendsTags();
+				if (!array_key_exists($parent->getName(), $extendsTags)) {
+					$checkParents = false;
+				}
+			}
+
+			if ($checkParents) {
+				while ($parent !== null) {
+					$check($parent, false);
+					$parent = $parent->getParentClass();
+				}
+			}
+
+			$interfaceTags = [];
+			if ($first) {
+				if ($classReflection->isInterface()) {
+					$interfaceTags = $classReflection->getExtendsTags();
+				} else {
+					$interfaceTags = $classReflection->getImplementsTags();
+				}
+			}
+			foreach ($classReflection->getInterfaces() as $interface) {
+				if ($first) {
+					if (!array_key_exists($interface->getName(), $interfaceTags)) {
+						continue;
+					}
+				}
+				$check($interface, false);
+			}
+		};
+
+		$check($classReflection, true);
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Generics/EnumAncestorsRule.php b/src/Rules/Generics/EnumAncestorsRule.php
new file mode 100644
index 00000000..3259df27
--- /dev/null
+++ b/src/Rules/Generics/EnumAncestorsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function array_map;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class EnumAncestorsRule implements Rule
+{
+
+	public function __construct(
+		private GenericAncestorsCheck $genericAncestorsCheck,
+		private CrossCheckInterfacesHelper $crossCheckInterfacesHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		if (!$originalNode instanceof Node\Stmt\Enum_) {
+			return [];
+		}
+		$classReflection = $node->getClassReflection();
+
+		$enumName = $classReflection->getName();
+		$escapedEnumName = SprintfHelper::escapeFormatString($enumName);
+
+		$extendsErrors = $this->genericAncestorsCheck->check(
+			[],
+			array_map(static fn (ExtendsTag $tag): Type => $tag->getType(), $classReflection->getExtendsTags()),
+			sprintf('Enum %s @extends tag contains incompatible type %%s.', $escapedEnumName),
+			sprintf('Enum %s @extends tag contains unresolvable type.', $enumName),
+			sprintf('Enum %s has @extends tag, but cannot extend anything.', $escapedEnumName),
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+		);
+
+		$implementsErrors = $this->genericAncestorsCheck->check(
+			$originalNode->implements,
+			array_map(static fn (ImplementsTag $tag): Type => $tag->getType(), $classReflection->getImplementsTags()),
+			sprintf('Enum %s @implements tag contains incompatible type %%s.', $escapedEnumName),
+			sprintf('Enum %s @implements tag contains unresolvable type.', $enumName),
+			sprintf('Enum %s has @implements tag, but does not implement any interface.', $escapedEnumName),
+			sprintf('The @implements tag of eunm %s describes %%s but the enum implements: %%s', $escapedEnumName),
+			'PHPDoc tag @implements contains generic type %s but %s %s is not generic.',
+			'Generic type %s in PHPDoc tag @implements does not specify all template types of %s %s: %s',
+			'Generic type %s in PHPDoc tag @implements specifies %d template types, but %s %s supports only %d: %s',
+			'Type %s in generic type %s in PHPDoc tag @implements is not subtype of template type %s of %s %s.',
+			'Call-site variance annotation of %s in generic type %s in PHPDoc tag @implements is not allowed.',
+			'PHPDoc tag @implements has invalid type %s.',
+			sprintf('Enum %s implements generic interface %%s but does not specify its types: %%s', $escapedEnumName),
+			sprintf('in implemented type %%s of enum %s', $escapedEnumName),
+		);
+
+		foreach ($this->crossCheckInterfacesHelper->check($classReflection) as $error) {
+			$implementsErrors[] = $error;
+		}
+
+		return array_merge($extendsErrors, $implementsErrors);
+	}
+
+}
diff --git a/src/Rules/Generics/EnumTemplateTypeRule.php b/src/Rules/Generics/EnumTemplateTypeRule.php
new file mode 100644
index 00000000..7c07e7c9
--- /dev/null
+++ b/src/Rules/Generics/EnumTemplateTypeRule.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class EnumTemplateTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$classReflection->isEnum()) {
+			return [];
+		}
+
+		$templateTagsCount = count($classReflection->getTemplateTags());
+		if ($templateTagsCount === 0) {
+			return [];
+		}
+
+		$className = $classReflection->getDisplayName();
+
+		return [
+			RuleErrorBuilder::message(sprintf('Enum %s has PHPDoc @template tag%s but enums cannot be generic.', $className, $templateTagsCount === 1 ? '' : 's'))
+				->identifier('enum.generic')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Generics/FunctionSignatureVarianceRule.php b/src/Rules/Generics/FunctionSignatureVarianceRule.php
new file mode 100644
index 00000000..2a7e45c5
--- /dev/null
+++ b/src/Rules/Generics/FunctionSignatureVarianceRule.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class FunctionSignatureVarianceRule implements Rule
+{
+
+	public function __construct(private VarianceCheck $varianceCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functionReflection = $node->getFunctionReflection();
+		$functionName = $functionReflection->getName();
+
+		return $this->varianceCheck->checkParametersAcceptor(
+			$functionReflection,
+			sprintf('in parameter %%s of function %s()', SprintfHelper::escapeFormatString($functionName)),
+			sprintf('in param-out type of parameter %%s of function %s()', SprintfHelper::escapeFormatString($functionName)),
+			sprintf('in return type of function %s()', $functionName),
+			sprintf('in function %s()', $functionName),
+			false,
+			false,
+			'function',
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/FunctionTemplateTypeRule.php b/src/Rules/Generics/FunctionTemplateTypeRule.php
new file mode 100644
index 00000000..0d46bbfe
--- /dev/null
+++ b/src/Rules/Generics/FunctionTemplateTypeRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Function_>
+ */
+final class FunctionTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Function_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		if (!isset($node->namespacedName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$functionName = (string) $node->namespacedName;
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			null,
+			null,
+			$functionName,
+			$docComment->getText(),
+		);
+
+		$escapedFunctionName = SprintfHelper::escapeFormatString($functionName);
+
+		return $this->templateTypeCheck->check(
+			$scope,
+			$node,
+			TemplateTypeScope::createWithFunction($functionName),
+			$resolvedPhpDoc->getTemplateTags(),
+			sprintf('PHPDoc tag @template for function %s() cannot have existing class %%s as its name.', $escapedFunctionName),
+			sprintf('PHPDoc tag @template for function %s() cannot have existing type alias %%s as its name.', $escapedFunctionName),
+			sprintf('PHPDoc tag @template %%s for function %s() has invalid bound type %%s.', $escapedFunctionName),
+			sprintf('PHPDoc tag @template %%s for function %s() with bound type %%s is not supported.', $escapedFunctionName),
+			sprintf('PHPDoc tag @template %%s for function %s() has invalid default type %%s.', $escapedFunctionName),
+			sprintf('Default type %%s in PHPDoc tag @template %%s for function %s() is not subtype of bound type %%s.', $escapedFunctionName),
+			sprintf('PHPDoc tag @template %%s for function %s() does not have a default type but follows an optional @template %%s.', $escapedFunctionName),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/GenericAncestorsCheck.php b/src/Rules/Generics/GenericAncestorsCheck.php
new file mode 100644
index 00000000..cbd76c6f
--- /dev/null
+++ b/src/Rules/Generics/GenericAncestorsCheck.php
@@ -0,0 +1,197 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TypeProjectionHelper;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_fill_keys;
+use function array_filter;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function count;
+use function implode;
+use function in_array;
+use function sprintf;
+
+final class GenericAncestorsCheck
+{
+
+	/**
+	 * @param string[] $skipCheckGenericClasses
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private VarianceCheck $varianceCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private array $skipCheckGenericClasses,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @param array<Node\Name> $nameNodes
+	 * @param array<Type> $ancestorTypes
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		array $nameNodes,
+		array $ancestorTypes,
+		string $incompatibleTypeMessage,
+		string $unresolvableTypeMessage,
+		string $noNamesMessage,
+		string $noRelatedNameMessage,
+		string $classNotGenericMessage,
+		string $notEnoughTypesMessage,
+		string $extraTypesMessage,
+		string $typeIsNotSubtypeMessage,
+		string $typeProjectionIsNotAllowedMessage,
+		string $invalidTypeMessage,
+		string $genericClassInNonGenericObjectType,
+		string $invalidVarianceMessage,
+	): array
+	{
+		$names = array_fill_keys(array_map(static fn (Name $nameNode): string => $nameNode->toString(), $nameNodes), true);
+
+		$unusedNames = $names;
+
+		$messages = [];
+		foreach ($ancestorTypes as $ancestorType) {
+			if (!$ancestorType instanceof GenericObjectType) {
+				$messages[] = RuleErrorBuilder::message(sprintf($incompatibleTypeMessage, $ancestorType->describe(VerbosityLevel::typeOnly())))
+					->identifier('generics.notCompatible')
+					->build();
+				continue;
+			}
+
+			$ancestorTypeClassName = $ancestorType->getClassName();
+			if (!isset($names[$ancestorTypeClassName])) {
+				if (count($names) === 0) {
+					$messages[] = RuleErrorBuilder::message($noNamesMessage)
+						->identifier('generics.noParent')
+						->build();
+				} else {
+					$messages[] = RuleErrorBuilder::message(sprintf($noRelatedNameMessage, $ancestorTypeClassName, implode(', ', array_keys($names))))
+						->identifier('generics.wrongParent')
+						->build();
+				}
+
+				continue;
+			}
+
+			unset($unusedNames[$ancestorTypeClassName]);
+
+			$genericObjectTypeCheckMessages = $this->genericObjectTypeCheck->check(
+				$ancestorType,
+				$classNotGenericMessage,
+				$notEnoughTypesMessage,
+				$extraTypesMessage,
+				$typeIsNotSubtypeMessage,
+				'',
+				'',
+			);
+			$messages = array_merge($messages, $genericObjectTypeCheckMessages);
+
+			if ($this->unresolvableTypeHelper->containsUnresolvableType($ancestorType)) {
+				$messages[] = RuleErrorBuilder::message($unresolvableTypeMessage)
+					->identifier('generics.unresolvable')
+					->build();
+			}
+
+			foreach ($ancestorType->getReferencedClasses() as $referencedClass) {
+				if (!$this->reflectionProvider->hasClass($referencedClass)) {
+					$messages[] = RuleErrorBuilder::message(sprintf($invalidTypeMessage, $referencedClass))
+						->identifier('class.notFound')
+						->build();
+					continue;
+				}
+
+				if ($referencedClass === $ancestorType->getClassName()) {
+					continue;
+				}
+
+				$classReflection = $this->reflectionProvider->getClass($referencedClass);
+				if (!$classReflection->isTrait()) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf($invalidTypeMessage, $referencedClass))
+					->identifier('generics.trait')
+					->build();
+			}
+
+			$variance = TemplateTypeVariance::createStatic();
+			$messageContext = sprintf(
+				$invalidVarianceMessage,
+				$ancestorType->describe(VerbosityLevel::typeOnly()),
+			);
+			foreach ($this->varianceCheck->check($variance, $ancestorType, $messageContext) as $message) {
+				$messages[] = $message;
+			}
+
+			foreach ($ancestorType->getVariances() as $index => $typeVariance) {
+				if ($typeVariance->invariant()) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$typeProjectionIsNotAllowedMessage,
+					TypeProjectionHelper::describe($ancestorType->getTypes()[$index], $typeVariance, VerbosityLevel::typeOnly()),
+					$ancestorType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('generics.callSiteVarianceNotAllowed')->build();
+			}
+		}
+
+		if ($this->checkMissingTypehints) {
+			foreach (array_keys($unusedNames) as $unusedName) {
+				if (!$this->reflectionProvider->hasClass($unusedName)) {
+					continue;
+				}
+
+				$unusedNameClassReflection = $this->reflectionProvider->getClass($unusedName);
+				if (in_array($unusedNameClassReflection->getName(), $this->skipCheckGenericClasses, true)) {
+					continue;
+				}
+				if (!$unusedNameClassReflection->isGeneric()) {
+					continue;
+				}
+
+				$templateTypes = $unusedNameClassReflection->getTemplateTypeMap()->getTypes();
+				$templateTypesCount = count($templateTypes);
+				$requiredTemplateTypesCount = count(array_filter($templateTypes, static fn (Type $type) => $type instanceof TemplateType && $type->getDefault() === null));
+				if ($requiredTemplateTypesCount === 0) {
+					continue;
+				}
+
+				$templateTypesList = implode(', ', array_keys($templateTypes));
+				if ($requiredTemplateTypesCount !== $templateTypesCount) {
+					$templateTypesList .= sprintf(' (%d-%d required)', $requiredTemplateTypesCount, $templateTypesCount);
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$genericClassInNonGenericObjectType,
+					$unusedName,
+					$templateTypesList,
+				))
+					->identifier('missingType.generics')
+					->build();
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generics/GenericObjectTypeCheck.php b/src/Rules/Generics/GenericObjectTypeCheck.php
new file mode 100644
index 00000000..6971ecae
--- /dev/null
+++ b/src/Rules/Generics/GenericObjectTypeCheck.php
@@ -0,0 +1,193 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Generic\TypeProjectionHelper;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function array_filter;
+use function array_keys;
+use function array_values;
+use function count;
+use function implode;
+use function sprintf;
+use function strtolower;
+
+final class GenericObjectTypeCheck
+{
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Type $phpDocType,
+		string $classNotGenericMessage,
+		string $notEnoughTypesMessage,
+		string $extraTypesMessage,
+		string $typeIsNotSubtypeMessage,
+		string $typeProjectionHasConflictingVarianceMessage,
+		string $typeProjectionIsRedundantMessage,
+	): array
+	{
+		$genericTypes = $this->getGenericTypes($phpDocType);
+		$messages = [];
+		foreach ($genericTypes as $genericType) {
+			$classReflection = $genericType->getClassReflection();
+			if ($classReflection === null) {
+				continue;
+			}
+
+			$classLikeDescription = strtolower($classReflection->getClassTypeDescription());
+			if (!$classReflection->isGeneric()) {
+				$messages[] = RuleErrorBuilder::message(sprintf($classNotGenericMessage, $genericType->describe(VerbosityLevel::typeOnly()), $classLikeDescription, $classReflection->getDisplayName()))
+					->identifier('generics.notGeneric')
+					->build();
+				continue;
+			}
+
+			$templateTypes = array_values($classReflection->getTemplateTypeMap()->getTypes());
+
+			$genericTypeTypes = $genericType->getTypes();
+			$genericTypeVariances = $genericType->getVariances();
+			$templateTypesCount = count($templateTypes);
+			$genericTypeTypesCount = count($genericTypeTypes);
+			$requiredTemplateTypesCount = count(array_filter($templateTypes, static fn (Type $type) => $type instanceof TemplateType && $type->getDefault() === null));
+			if ($requiredTemplateTypesCount > $genericTypeTypesCount) {
+				$templateTypesList = implode(', ', array_keys($classReflection->getTemplateTypeMap()->getTypes()));
+				if ($requiredTemplateTypesCount !== $templateTypesCount) {
+					$templateTypesList .= sprintf(' (%d-%d required).', $requiredTemplateTypesCount, $templateTypesCount);
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$notEnoughTypesMessage,
+					$genericType->describe(VerbosityLevel::typeOnly()),
+					$classLikeDescription,
+					$classReflection->getDisplayName(false),
+					$templateTypesList,
+				))->identifier('generics.lessTypes')->build();
+			} elseif ($templateTypesCount < $genericTypeTypesCount) {
+				$templateTypesList = implode(', ', array_keys($classReflection->getTemplateTypeMap()->getTypes()));
+				if ($requiredTemplateTypesCount !== $templateTypesCount) {
+					$templateTypesList .= sprintf(' (%d-%d required)', $requiredTemplateTypesCount, $templateTypesCount);
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$extraTypesMessage,
+					$genericType->describe(VerbosityLevel::typeOnly()),
+					$genericTypeTypesCount,
+					$classLikeDescription,
+					$classReflection->getDisplayName(false),
+					$templateTypesCount,
+					$templateTypesList,
+				))->identifier('generics.moreTypes')->build();
+			}
+
+			for ($i = 0; $i < $templateTypesCount; $i++) {
+				if (!isset($genericTypeTypes[$i])) {
+					continue;
+				}
+
+				$templateType = $templateTypes[$i];
+				$genericTypeType = $genericTypeTypes[$i];
+
+				$genericTypeVariance = $genericTypeVariances[$i] ?? TemplateTypeVariance::createInvariant();
+				if ($templateType instanceof TemplateType && !$genericTypeVariance->invariant()) {
+					if ($genericTypeVariance->equals($templateType->getVariance())) {
+						$messages[] = RuleErrorBuilder::message(sprintf(
+							$typeProjectionIsRedundantMessage,
+							TypeProjectionHelper::describe($genericTypeType, $genericTypeVariance, VerbosityLevel::typeOnly()),
+							$genericType->describe(VerbosityLevel::typeOnly()),
+							$templateType->describe(VerbosityLevel::typeOnly()),
+							$classLikeDescription,
+							$classReflection->getDisplayName(false),
+						))
+							->identifier('generics.callSiteVarianceRedundant')
+							->tip('You can safely remove the call-site variance annotation.')
+							->build();
+					} elseif (!$genericTypeVariance->validPosition($templateType->getVariance())) {
+						$messages[] = RuleErrorBuilder::message(sprintf(
+							$typeProjectionHasConflictingVarianceMessage,
+							TypeProjectionHelper::describe($genericTypeType, $genericTypeVariance, VerbosityLevel::typeOnly()),
+							$genericType->describe(VerbosityLevel::typeOnly()),
+							$templateType->getVariance()->describe(),
+							$templateType->describe(VerbosityLevel::typeOnly()),
+							$classLikeDescription,
+							$classReflection->getDisplayName(false),
+						))->identifier('generics.callSiteVarianceConflict')->build();
+					}
+				}
+
+				$boundType = TemplateTypeHelper::resolveToBounds($templateType);
+				if ($boundType->isSuperTypeOf($genericTypeType)->yes()) {
+					if (!$templateType instanceof TemplateType) {
+						continue;
+					}
+					$map = $templateType->inferTemplateTypes($genericTypeType);
+					for ($j = 0; $j < $templateTypesCount; $j++) {
+						if ($i === $j) {
+							continue;
+						}
+
+						$templateTypes[$j] = TemplateTypeHelper::resolveTemplateTypes(
+							$templateTypes[$j],
+							$map,
+							TemplateTypeVarianceMap::createEmpty(),
+							TemplateTypeVariance::createStatic(),
+						);
+					}
+					continue;
+				}
+
+				if ($genericTypeVariance->bivariant()) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$typeIsNotSubtypeMessage,
+					$genericTypeType->describe(VerbosityLevel::typeOnly()),
+					$genericType->describe(VerbosityLevel::typeOnly()),
+					$templateType->describe(VerbosityLevel::typeOnly()),
+					$classLikeDescription,
+					$classReflection->getDisplayName(false),
+				))->identifier('generics.notSubtype')->build();
+			}
+		}
+
+		return $messages;
+	}
+
+	/**
+	 * @return list<GenericObjectType|GenericStaticType>
+	 */
+	private function getGenericTypes(Type $phpDocType): array
+	{
+		$genericObjectTypes = [];
+		TypeTraverser::map($phpDocType, static function (Type $type, callable $traverse) use (&$genericObjectTypes): Type {
+			if ($type instanceof GenericObjectType || $type instanceof GenericStaticType) {
+				$resolvedType = TemplateTypeHelper::resolveToBounds($type);
+				if (!$resolvedType instanceof GenericObjectType && !$resolvedType instanceof GenericStaticType) {
+					throw new ShouldNotHappenException();
+				}
+				$genericObjectTypes[] = $resolvedType;
+				$traverse($type);
+				return $type;
+			}
+			$traverse($type);
+			return $type;
+		});
+
+		return $genericObjectTypes;
+	}
+
+}
diff --git a/src/Rules/Generics/InterfaceAncestorsRule.php b/src/Rules/Generics/InterfaceAncestorsRule.php
new file mode 100644
index 00000000..062a184d
--- /dev/null
+++ b/src/Rules/Generics/InterfaceAncestorsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\PhpDoc\Tag\ExtendsTag;
+use PHPStan\PhpDoc\Tag\ImplementsTag;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+use function array_map;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class InterfaceAncestorsRule implements Rule
+{
+
+	public function __construct(
+		private GenericAncestorsCheck $genericAncestorsCheck,
+		private CrossCheckInterfacesHelper $crossCheckInterfacesHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		if (!$originalNode instanceof Node\Stmt\Interface_) {
+			return [];
+		}
+		$classReflection = $node->getClassReflection();
+
+		$interfaceName = $classReflection->getName();
+		$escapedInterfaceName = SprintfHelper::escapeFormatString($interfaceName);
+
+		$extendsErrors = $this->genericAncestorsCheck->check(
+			$originalNode->extends,
+			array_map(static fn (ExtendsTag $tag): Type => $tag->getType(), $classReflection->getExtendsTags()),
+			sprintf('Interface %s @extends tag contains incompatible type %%s.', $escapedInterfaceName),
+			sprintf('Interface %s @extends tag contains unresolvable type.', $interfaceName),
+			sprintf('Interface %s has @extends tag, but does not extend any interface.', $escapedInterfaceName),
+			sprintf('The @extends tag of interface %s describes %%s but the interface extends: %%s', $escapedInterfaceName),
+			'PHPDoc tag @extends contains generic type %s but %s %s is not generic.',
+			'Generic type %s in PHPDoc tag @extends does not specify all template types of %s %s: %s',
+			'Generic type %s in PHPDoc tag @extends specifies %d template types, but %s %s supports only %d: %s',
+			'Type %s in generic type %s in PHPDoc tag @extends is not subtype of template type %s of %s %s.',
+			'Call-site variance annotation of %s in generic type %s in PHPDoc tag @extends is not allowed.',
+			'PHPDoc tag @extends has invalid type %s.',
+			sprintf('Interface %s extends generic interface %%s but does not specify its types: %%s', $escapedInterfaceName),
+			sprintf('in extended type %%s of interface %s', $escapedInterfaceName),
+		);
+
+		$implementsErrors = $this->genericAncestorsCheck->check(
+			[],
+			array_map(static fn (ImplementsTag $tag): Type => $tag->getType(), $classReflection->getImplementsTags()),
+			sprintf('Interface %s @implements tag contains incompatible type %%s.', $escapedInterfaceName),
+			sprintf('Interface %s @implements tag contains unresolvable type.', $interfaceName),
+			sprintf('Interface %s has @implements tag, but can not implement any interface, must extend from it.', $escapedInterfaceName),
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+		);
+
+		foreach ($this->crossCheckInterfacesHelper->check($classReflection) as $error) {
+			$implementsErrors[] = $error;
+		}
+
+		return array_merge($extendsErrors, $implementsErrors);
+	}
+
+}
diff --git a/src/Rules/Generics/InterfaceTemplateTypeRule.php b/src/Rules/Generics/InterfaceTemplateTypeRule.php
new file mode 100644
index 00000000..48bf1e69
--- /dev/null
+++ b/src/Rules/Generics/InterfaceTemplateTypeRule.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class InterfaceTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$classReflection->isInterface()) {
+			return [];
+		}
+		$interfaceName = $classReflection->getName();
+
+		$escapadInterfaceName = SprintfHelper::escapeFormatString($interfaceName);
+
+		return $this->templateTypeCheck->check(
+			$scope,
+			$node,
+			TemplateTypeScope::createWithClass($interfaceName),
+			$classReflection->getTemplateTags(),
+			sprintf('PHPDoc tag @template for interface %s cannot have existing class %%s as its name.', $escapadInterfaceName),
+			sprintf('PHPDoc tag @template for interface %s cannot have existing type alias %%s as its name.', $escapadInterfaceName),
+			sprintf('PHPDoc tag @template %%s for interface %s has invalid bound type %%s.', $escapadInterfaceName),
+			sprintf('PHPDoc tag @template %%s for interface %s with bound type %%s is not supported.', $escapadInterfaceName),
+			sprintf('PHPDoc tag @template %%s for interface %s has invalid default type %%s.', $escapadInterfaceName),
+			sprintf('Default type %%s in PHPDoc tag @template %%s for interface %s is not subtype of bound type %%s.', $escapadInterfaceName),
+			sprintf('PHPDoc tag @template %%s for interface %s does not have a default type but follows an optional @template %%s.', $escapadInterfaceName),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/MethodSignatureVarianceRule.php b/src/Rules/Generics/MethodSignatureVarianceRule.php
new file mode 100644
index 00000000..e9ac2127
--- /dev/null
+++ b/src/Rules/Generics/MethodSignatureVarianceRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MethodSignatureVarianceRule implements Rule
+{
+
+	public function __construct(private VarianceCheck $varianceCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+
+		return $this->varianceCheck->checkParametersAcceptor(
+			$method,
+			sprintf('in parameter %%s of method %s::%s()', SprintfHelper::escapeFormatString($method->getDeclaringClass()->getDisplayName()), SprintfHelper::escapeFormatString($method->getName())),
+			sprintf('in param-out type of parameter %%s of method %s::%s()', SprintfHelper::escapeFormatString($method->getDeclaringClass()->getDisplayName()), SprintfHelper::escapeFormatString($method->getName())),
+			sprintf('in return type of method %s::%s()', $method->getDeclaringClass()->getDisplayName(), $method->getName()),
+			sprintf('in method %s::%s()', $method->getDeclaringClass()->getDisplayName(), $method->getName()),
+			$method->isStatic(),
+			$method->isPrivate() || $method->getName() === '__construct',
+			'method',
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/MethodTagTemplateTypeCheck.php b/src/Rules/Generics/MethodTagTemplateTypeCheck.php
new file mode 100644
index 00000000..b65af8e4
--- /dev/null
+++ b/src/Rules/Generics/MethodTagTemplateTypeCheck.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node\Stmt\ClassLike;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\VerbosityLevel;
+use function array_keys;
+use function array_merge;
+use function sprintf;
+
+final class MethodTagTemplateTypeCheck
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		ClassReflection $classReflection,
+		Scope $scope,
+		ClassLike $node,
+		string $docComment,
+	): array
+	{
+		$className = $classReflection->getDisplayName();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$classReflection->getName(),
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			null,
+			$docComment,
+		);
+
+		$messages = [];
+		$escapedClassName = SprintfHelper::escapeFormatString($className);
+		$classTemplateTypes = $classReflection->getTemplateTypeMap()->getTypes();
+
+		foreach ($resolvedPhpDoc->getMethodTags() as $methodName => $methodTag) {
+			$methodTemplateTags = $methodTag->getTemplateTags();
+			$escapedMethodName = SprintfHelper::escapeFormatString($methodName);
+
+			$messages = array_merge($messages, $this->templateTypeCheck->check(
+				$scope,
+				$node,
+				TemplateTypeScope::createWithMethod($className, $methodName),
+				$methodTemplateTags,
+				sprintf('PHPDoc tag @method template for method %s::%s() cannot have existing class %%s as its name.', $escapedClassName, $escapedMethodName),
+				sprintf('PHPDoc tag @method template for method %s::%s() cannot have existing type alias %%s as its name.', $escapedClassName, $escapedMethodName),
+				sprintf('PHPDoc tag @method template %%s for method %s::%s() has invalid bound type %%s.', $escapedClassName, $escapedMethodName),
+				sprintf('PHPDoc tag @method template %%s for method %s::%s() with bound type %%s is not supported.', $escapedClassName, $escapedMethodName),
+				sprintf('PHPDoc tag @method template %%s for method %s::%s() has invalid default type %%s', $escapedClassName, $escapedMethodName),
+				sprintf('Default type %%s in PHPDoc tag @method template %%s for method %s::%s() is not subtype of bound type %%s', $escapedClassName, $escapedMethodName),
+				sprintf('PHPDoc tag @template %%s for method %s::%s() does not have a default type but follows an optional @template %%s.', $escapedClassName, $escapedMethodName),
+			));
+
+			foreach (array_keys($methodTemplateTags) as $name) {
+				if (!isset($classTemplateTypes[$name])) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @method template %s for method %s::%s() shadows @template %s for class %s.', $name, $className, $methodName, $classTemplateTypes[$name]->describe(VerbosityLevel::typeOnly()), $classReflection->getDisplayName(false)))
+					->identifier('methodTag.shadowTemplate')
+					->build();
+			}
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generics/MethodTagTemplateTypeRule.php b/src/Rules/Generics/MethodTagTemplateTypeRule.php
new file mode 100644
index 00000000..1bb8e004
--- /dev/null
+++ b/src/Rules/Generics/MethodTagTemplateTypeRule.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class MethodTagTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private MethodTagTemplateTypeCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		return $this->check->check(
+			$node->getClassReflection(),
+			$scope,
+			$node->getOriginalNode(),
+			$docComment->getText(),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/MethodTagTemplateTypeTraitRule.php b/src/Rules/Generics/MethodTagTemplateTypeTraitRule.php
new file mode 100644
index 00000000..21250179
--- /dev/null
+++ b/src/Rules/Generics/MethodTagTemplateTypeTraitRule.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class MethodTagTemplateTypeTraitRule implements Rule
+{
+
+	public function __construct(
+		private MethodTagTemplateTypeCheck $check,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$traitName = $node->namespacedName;
+		if ($traitName === null) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasClass($traitName->toString())) {
+			return [];
+		}
+
+		return $this->check->check(
+			$this->reflectionProvider->getClass($traitName->toString()),
+			$scope,
+			$node,
+			$docComment->getText(),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/MethodTemplateTypeRule.php b/src/Rules/Generics/MethodTemplateTypeRule.php
new file mode 100644
index 00000000..0be89bdc
--- /dev/null
+++ b/src/Rules/Generics/MethodTemplateTypeRule.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\VerbosityLevel;
+use function array_keys;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassMethod>
+ */
+final class MethodTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassMethod::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$classReflection = $scope->getClassReflection();
+		$className = $classReflection->getDisplayName();
+		$methodName = $node->name->toString();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$classReflection->getName(),
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$methodName,
+			$docComment->getText(),
+		);
+
+		$methodTemplateTags = $resolvedPhpDoc->getTemplateTags();
+		$escapedClassName = SprintfHelper::escapeFormatString($className);
+		$escapedMethodName = SprintfHelper::escapeFormatString($methodName);
+		$messages = $this->templateTypeCheck->check(
+			$scope,
+			$node,
+			TemplateTypeScope::createWithMethod($className, $methodName),
+			$methodTemplateTags,
+			sprintf('PHPDoc tag @template for method %s::%s() cannot have existing class %%s as its name.', $escapedClassName, $escapedMethodName),
+			sprintf('PHPDoc tag @template for method %s::%s() cannot have existing type alias %%s as its name.', $escapedClassName, $escapedMethodName),
+			sprintf('PHPDoc tag @template %%s for method %s::%s() has invalid bound type %%s.', $escapedClassName, $escapedMethodName),
+			sprintf('PHPDoc tag @template %%s for method %s::%s() with bound type %%s is not supported.', $escapedClassName, $escapedMethodName),
+			sprintf('PHPDoc tag @template %%s for method %s::%s() has invalid default type %%s.', $escapedClassName, $escapedMethodName),
+			sprintf('Default type %%s in PHPDoc tag @template %%s for method %s::%s() is not subtype of bound type %%s.', $escapedClassName, $escapedMethodName),
+			sprintf('PHPDoc tag @template %%s for method %s::%s() does not have a default type but follows an optional @template %%s.', $escapedClassName, $escapedMethodName),
+		);
+
+		$classTemplateTypes = $classReflection->getTemplateTypeMap()->getTypes();
+		foreach (array_keys($methodTemplateTags) as $name) {
+			if (!isset($classTemplateTypes[$name])) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @template %s for method %s::%s() shadows @template %s for class %s.', $name, $className, $methodName, $classTemplateTypes[$name]->describe(VerbosityLevel::typeOnly()), $classReflection->getDisplayName(false)))
+				->identifier('method.shadowTemplate')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generics/PropertyVarianceRule.php b/src/Rules/Generics/PropertyVarianceRule.php
new file mode 100644
index 00000000..a9d6a157
--- /dev/null
+++ b/src/Rules/Generics/PropertyVarianceRule.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class PropertyVarianceRule implements Rule
+{
+
+	public function __construct(
+		private VarianceCheck $varianceCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+
+		if (!$classReflection->hasNativeProperty($node->getName())) {
+			return [];
+		}
+
+		$propertyReflection = $classReflection->getNativeProperty($node->getName());
+
+		if ($propertyReflection->isPrivate()) {
+			return [];
+		}
+
+		$variance = $node->isReadOnly() || $node->isReadOnlyByPhpDoc()
+			? TemplateTypeVariance::createCovariant()
+			: TemplateTypeVariance::createInvariant();
+
+		return $this->varianceCheck->check(
+			$variance,
+			$propertyReflection->getReadableType(),
+			sprintf('in property %s::$%s', SprintfHelper::escapeFormatString($classReflection->getDisplayName()), SprintfHelper::escapeFormatString($node->getName())),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/TemplateTypeCheck.php b/src/Rules/Generics/TemplateTypeCheck.php
new file mode 100644
index 00000000..d14769aa
--- /dev/null
+++ b/src/Rules/Generics/TemplateTypeCheck.php
@@ -0,0 +1,213 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\KeyOfType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\TypeAliasResolver;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function array_merge;
+use function get_class;
+use function sprintf;
+
+final class TemplateTypeCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private TypeAliasResolver $typeAliasResolver,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string, TemplateTag> $templateTags
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Scope $scope,
+		Node $node,
+		TemplateTypeScope $templateTypeScope,
+		array $templateTags,
+		string $sameTemplateTypeNameAsClassMessage,
+		string $sameTemplateTypeNameAsTypeMessage,
+		string $invalidBoundTypeMessage,
+		string $notSupportedBoundMessage,
+		string $invalidDefaultTypeMessage,
+		string $defaultNotSubtypeOfBoundMessage,
+		string $requiredTypeAfterOptionalMessage,
+	): array
+	{
+		$messages = [];
+		$templateTagWithDefaultType = null;
+		foreach ($templateTags as $templateTag) {
+			$templateTagName = $scope->resolveName(new Node\Name($templateTag->getName()));
+			if ($this->reflectionProvider->hasClass($templateTagName)) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$sameTemplateTypeNameAsClassMessage,
+					$templateTagName,
+				))->identifier('generics.existingClass')->build();
+			}
+			if ($this->typeAliasResolver->hasTypeAlias($templateTagName, $templateTypeScope->getClassName())) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$sameTemplateTypeNameAsTypeMessage,
+					$templateTagName,
+				))->identifier('generics.existingTypeAlias')->build();
+			}
+			$boundType = $templateTag->getBound();
+			foreach ($boundType->getReferencedClasses() as $referencedClass) {
+				if (!$this->reflectionProvider->hasClass($referencedClass)) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						$invalidBoundTypeMessage,
+						$templateTagName,
+						$referencedClass,
+					))->identifier('class.notFound')->build();
+					continue;
+				}
+				if (!$this->reflectionProvider->getClass($referencedClass)->isTrait()) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$invalidBoundTypeMessage,
+					$templateTagName,
+					$referencedClass,
+				))->identifier('generics.traitBound')->build();
+			}
+
+			$classNameNodePairs = array_map(static fn (string $referencedClass): ClassNameNodePair => new ClassNameNodePair($referencedClass, $node), $boundType->getReferencedClasses());
+			$messages = array_merge($messages, $this->classCheck->checkClassNames($classNameNodePairs, $this->checkClassCaseSensitivity));
+
+			$boundTypeClass = get_class($boundType);
+			if (
+				$boundTypeClass !== MixedType::class
+				&& $boundTypeClass !== ConstantArrayType::class
+				&& $boundTypeClass !== ArrayType::class
+				&& $boundTypeClass !== ConstantStringType::class
+				&& $boundTypeClass !== StringType::class
+				&& $boundTypeClass !== ConstantIntegerType::class
+				&& $boundTypeClass !== IntegerType::class
+				&& $boundTypeClass !== FloatType::class
+				&& $boundTypeClass !== BooleanType::class
+				&& $boundTypeClass !== ObjectWithoutClassType::class
+				&& $boundTypeClass !== ObjectType::class
+				&& $boundTypeClass !== ObjectShapeType::class
+				&& $boundTypeClass !== GenericObjectType::class
+				&& $boundTypeClass !== KeyOfType::class
+				&& !$boundType instanceof UnionType
+				&& !$boundType instanceof IntersectionType
+				&& !$boundType instanceof TemplateType
+			) {
+				$messages[] = RuleErrorBuilder::message(sprintf($notSupportedBoundMessage, $templateTagName, $boundType->describe(VerbosityLevel::typeOnly())))
+					->identifier('generics.notSupportedBound')
+					->build();
+			}
+
+			$escapedTemplateTagName = SprintfHelper::escapeFormatString($templateTagName);
+			$genericObjectErrors = $this->genericObjectTypeCheck->check(
+				$boundType,
+				sprintf('PHPDoc tag @template %s bound contains generic type %%s but %%s %%s is not generic.', $escapedTemplateTagName),
+				sprintf('PHPDoc tag @template %s bound has type %%s which does not specify all template types of %%s %%s: %%s', $escapedTemplateTagName),
+				sprintf('PHPDoc tag @template %s bound has type %%s which specifies %%d template types, but %%s %%s supports only %%d: %%s', $escapedTemplateTagName),
+				sprintf('Type %%s in generic type %%s in PHPDoc tag @template %s is not subtype of template type %%s of %%s %%s.', $escapedTemplateTagName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @template %s is in conflict with %%s template type %%s of %%s %%s.', $escapedTemplateTagName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @template %s is redundant, template type %%s of %%s %%s has the same variance.', $escapedTemplateTagName),
+			);
+			foreach ($genericObjectErrors as $genericObjectError) {
+				$messages[] = $genericObjectError;
+			}
+
+			$defaultType = $templateTag->getDefault();
+			if ($defaultType === null) {
+				if ($templateTagWithDefaultType !== null) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						$requiredTypeAfterOptionalMessage,
+						$templateTagName,
+						$templateTagWithDefaultType,
+					))->identifier('generics.requiredTypeAfterOptional')->build();
+				}
+
+				continue;
+			}
+
+			$templateTagWithDefaultType = $templateTagName;
+
+			foreach ($defaultType->getReferencedClasses() as $referencedClass) {
+				if (!$this->reflectionProvider->hasClass($referencedClass)) {
+					$messages[] = RuleErrorBuilder::message(sprintf(
+						$invalidDefaultTypeMessage,
+						$templateTagName,
+						$referencedClass,
+					))->identifier('class.notFound')->build();
+					continue;
+				}
+				if (!$this->reflectionProvider->getClass($referencedClass)->isTrait()) {
+					continue;
+				}
+
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					$invalidDefaultTypeMessage,
+					$templateTagName,
+					$referencedClass,
+				))->identifier('generics.traitBound')->build();
+			}
+
+			$classNameNodePairs = array_map(static fn (string $referencedClass): ClassNameNodePair => new ClassNameNodePair($referencedClass, $node), $defaultType->getReferencedClasses());
+			$messages = array_merge($messages, $this->classCheck->checkClassNames($classNameNodePairs, $this->checkClassCaseSensitivity));
+
+			$genericDefaultErrors = $this->genericObjectTypeCheck->check(
+				$defaultType,
+				sprintf('PHPDoc tag @template %s default contains generic type %%s but class %%s is not generic.', $escapedTemplateTagName),
+				sprintf('PHPDoc tag @template %s default has type %%s which does not specify all template types of class %%s: %%s', $escapedTemplateTagName),
+				sprintf('PHPDoc tag @template %s default has type %%s which specifies %%d template types, but class %%s supports only %%d: %%s', $escapedTemplateTagName),
+				sprintf('Type %%s in generic type %%s in PHPDoc tag @template %s default is not subtype of template type %%s of class %%s.', $escapedTemplateTagName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @template %s default is in conflict with %%s template type %%s of %%s %%s.', $escapedTemplateTagName),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag @template %s default is redundant, template type %%s of %%s %%s has the same variance.', $escapedTemplateTagName),
+			);
+			foreach ($genericDefaultErrors as $genericDefaultError) {
+				$messages[] = $genericDefaultError;
+			}
+
+			if (!$boundType->accepts($defaultType, $scope->isDeclareStrictTypes())->no()) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf($defaultNotSubtypeOfBoundMessage, $defaultType->describe(VerbosityLevel::typeOnly()), $templateTagName, $boundType->describe(VerbosityLevel::typeOnly())))
+				->identifier('generics.templateDefaultOutOfBounds')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Generics/TraitTemplateTypeRule.php b/src/Rules/Generics/TraitTemplateTypeRule.php
new file mode 100644
index 00000000..635ea39c
--- /dev/null
+++ b/src/Rules/Generics/TraitTemplateTypeRule.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class TraitTemplateTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		if (!isset($node->namespacedName)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$traitName = (string) $node->namespacedName;
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$traitName,
+			null,
+			null,
+			$docComment->getText(),
+		);
+
+		$escapedTraitName = SprintfHelper::escapeFormatString($traitName);
+
+		return $this->templateTypeCheck->check(
+			$scope,
+			$node,
+			TemplateTypeScope::createWithClass($traitName),
+			$resolvedPhpDoc->getTemplateTags(),
+			sprintf('PHPDoc tag @template for trait %s cannot have existing class %%s as its name.', $escapedTraitName),
+			sprintf('PHPDoc tag @template for trait %s cannot have existing type alias %%s as its name.', $escapedTraitName),
+			sprintf('PHPDoc tag @template %%s for trait %s has invalid bound type %%s.', $escapedTraitName),
+			sprintf('PHPDoc tag @template %%s for trait %s with bound type %%s is not supported.', $escapedTraitName),
+			sprintf('PHPDoc tag @template %%s for trait %s has invalid default type %%s.', $escapedTraitName),
+			sprintf('Default type %%s in PHPDoc tag @template %%s for trait %s is not subtype of bound type %%s.', $escapedTraitName),
+			sprintf('PHPDoc tag @template %%s for trait %s does not have a default type but follows an optional @template %%s.', $escapedTraitName),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/UsedTraitsRule.php b/src/Rules/Generics/UsedTraitsRule.php
new file mode 100644
index 00000000..43fcd6e9
--- /dev/null
+++ b/src/Rules/Generics/UsedTraitsRule.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\PhpDoc\Tag\UsesTag;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Type;
+use function array_map;
+use function sprintf;
+use function strtolower;
+use function ucfirst;
+
+/**
+ * @implements Rule<Node\Stmt\TraitUse>
+ */
+final class UsedTraitsRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private GenericAncestorsCheck $genericAncestorsCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\TraitUse::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$className = $scope->getClassReflection()->getName();
+		$traitName = null;
+		if ($scope->isInTrait()) {
+			$traitName = $scope->getTraitReflection()->getName();
+		}
+		$useTags = [];
+		$docComment = $node->getDocComment();
+		if ($docComment !== null) {
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$scope->getFile(),
+				$className,
+				$traitName,
+				null,
+				$docComment->getText(),
+			);
+			$useTags = $resolvedPhpDoc->getUsesTags();
+		}
+
+		$typeDescription = strtolower($scope->getClassReflection()->getClassTypeDescription());
+		$description = sprintf('%s %s', $typeDescription, SprintfHelper::escapeFormatString($className));
+		if ($traitName !== null) {
+			$typeDescription = 'trait';
+			$description = sprintf('%s %s', $typeDescription, SprintfHelper::escapeFormatString($traitName));
+		}
+
+		$escapedDescription = SprintfHelper::escapeFormatString($description);
+		$upperCaseDescription = ucfirst($description);
+		$escapedUpperCaseDescription = SprintfHelper::escapeFormatString($upperCaseDescription);
+
+		return $this->genericAncestorsCheck->check(
+			$node->traits,
+			array_map(static fn (UsesTag $tag): Type => $tag->getType(), $useTags),
+			sprintf('%s @use tag contains incompatible type %%s.', $escapedUpperCaseDescription),
+			sprintf('%s @use tag contains unresolvable type.', $upperCaseDescription),
+			sprintf('%s has @use tag, but does not use any trait.', $upperCaseDescription),
+			sprintf('The @use tag of %s describes %%s but the %s uses %%s.', $escapedDescription, $typeDescription),
+			'PHPDoc tag @use contains generic type %s but %s %s is not generic.',
+			'Generic type %s in PHPDoc tag @use does not specify all template types of %s %s: %s',
+			'Generic type %s in PHPDoc tag @use specifies %d template types, but %s %s supports only %d: %s',
+			'Type %s in generic type %s in PHPDoc tag @use is not subtype of template type %s of %s %s.',
+			'Call-site variance annotation of %s in generic type %s in PHPDoc tag @use is not allowed.',
+			'PHPDoc tag @use has invalid type %s.',
+			sprintf('%s uses generic trait %%s but does not specify its types: %%s', $escapedUpperCaseDescription),
+			sprintf('in used type %%s of %s', $escapedDescription),
+		);
+	}
+
+}
diff --git a/src/Rules/Generics/VarianceCheck.php b/src/Rules/Generics/VarianceCheck.php
new file mode 100644
index 00000000..9e0a2cd0
--- /dev/null
+++ b/src/Rules/Generics/VarianceCheck.php
@@ -0,0 +1,111 @@
+<?php 
+
+namespace PHPStan\Rules\Generics;
+return;
+
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Type;
+use function sprintf;
+
+final class VarianceCheck
+{
+
+	/**
+	 * @param 'function'|'method' $identifier
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkParametersAcceptor(
+		ExtendedParametersAcceptor $parametersAcceptor,
+		string $parameterTypeMessage,
+		string $parameterOutTypeMessage,
+		string $returnTypeMessage,
+		string $generalMessage,
+		bool $isStatic,
+		bool $isPrivate,
+		string $identifier,
+	): array
+	{
+		$errors = [];
+
+		foreach ($parametersAcceptor->getTemplateTypeMap()->getTypes() as $templateType) {
+			if (!$templateType instanceof TemplateType
+				|| $templateType->getScope()->getFunctionName() === null
+				|| $templateType->getVariance()->invariant()
+			) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Variance annotation is only allowed for type parameters of classes and interfaces, but occurs in template type %s in %s.',
+				$templateType->getName(),
+				$generalMessage,
+			))->identifier(sprintf('%s.variance', $identifier))->build();
+		}
+
+		if ($isPrivate) {
+			return $errors;
+		}
+
+		$covariant = TemplateTypeVariance::createCovariant();
+		$parameterVariance = TemplateTypeVariance::createContravariant();
+
+		foreach ($parametersAcceptor->getParameters() as $parameterReflection) {
+			$type = $parameterReflection->getType();
+			$message = sprintf($parameterTypeMessage, $parameterReflection->getName());
+			foreach ($this->check($parameterVariance, $type, $message) as $error) {
+				$errors[] = $error;
+			}
+
+			$paramOutType = $parameterReflection->getOutType();
+			if ($paramOutType === null) {
+				continue;
+			}
+
+			$outMessage = sprintf($parameterOutTypeMessage, $parameterReflection->getName());
+			foreach ($this->check($covariant, $paramOutType, $outMessage) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		$type = $parametersAcceptor->getReturnType();
+		foreach ($this->check($covariant, $type, $returnTypeMessage) as $error) {
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	/** @return list<IdentifierRuleError> */
+	public function check(TemplateTypeVariance $positionVariance, Type $type, string $messageContext): array
+	{
+		$errors = [];
+
+		foreach ($type->getReferencedTemplateTypes($positionVariance) as $reference) {
+			$referredType = $reference->getType();
+			if (($referredType->getScope()->getFunctionName() !== null && !$referredType->getVariance()->invariant())
+				|| $this->isTemplateTypeVarianceValid($reference->getPositionVariance(), $referredType)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Template type %s is declared as %s, but occurs in %s position %s.',
+				$referredType->getName(),
+				$referredType->getVariance()->describe(),
+				$reference->getPositionVariance()->describe(),
+				$messageContext,
+			))->identifier('generics.variance')->build();
+		}
+
+		return $errors;
+	}
+
+	private function isTemplateTypeVarianceValid(TemplateTypeVariance $positionVariance, TemplateType $type): bool
+	{
+		return $positionVariance->validPosition($type->getVariance());
+	}
+
+}
diff --git a/src/Rules/IdentifierRuleError.php b/src/Rules/IdentifierRuleError.php
new file mode 100644
index 00000000..de4c379f
--- /dev/null
+++ b/src/Rules/IdentifierRuleError.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface IdentifierRuleError extends RuleError
+{
+
+	public function getIdentifier(): string;
+
+}
diff --git a/src/Rules/Ignore/IgnoreParseErrorRule.php b/src/Rules/Ignore/IgnoreParseErrorRule.php
new file mode 100644
index 00000000..1fa4fcff
--- /dev/null
+++ b/src/Rules/Ignore/IgnoreParseErrorRule.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Rules\Ignore;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FileNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<FileNode>
+ */
+final class IgnoreParseErrorRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FileNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$nodes = $node->getNodes();
+		if (count($nodes) === 0) {
+			return [];
+		}
+
+		$firstNode = $nodes[0];
+		$parseErrors = $firstNode->getAttribute('linesToIgnoreParseErrors', []);
+		$errors = [];
+		foreach ($parseErrors as $line => $lineParseErrors) {
+			foreach ($lineParseErrors as $parseError) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Parse error in @phpstan-ignore: %s', $parseError))
+					->line($line)
+					->identifier('ignore.parseError')
+					->nonIgnorable()
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/IssetCheck.php b/src/Rules/IssetCheck.php
new file mode 100644
index 00000000..1e95ed20
--- /dev/null
+++ b/src/Rules/IssetCheck.php
@@ -0,0 +1,298 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Properties\PropertyDescriptor;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @phpstan-type ErrorIdentifier = 'empty'|'isset'|'nullCoalesce'
+ */
+final class IssetCheck
+{
+
+	public function __construct(
+		private PropertyDescriptor $propertyDescriptor,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private bool $checkAdvancedIsset,
+		private bool $treatPhpDocTypesAsCertain,
+	)
+	{
+	}
+
+	/**
+	 * @param ErrorIdentifier $identifier
+	 * @param callable(Type): ?string $typeMessageCallback
+	 */
+	public function check(Expr $expr, Scope $scope, string $operatorDescription, string $identifier, callable $typeMessageCallback, ?IdentifierRuleError $error = null): ?IdentifierRuleError
+	{
+		// mirrored in PHPStan\Analyser\MutatingScope::issetCheck()
+		if ($expr instanceof Node\Expr\Variable && is_string($expr->name)) {
+			$hasVariable = $scope->hasVariableType($expr->name);
+			if ($hasVariable->maybe()) {
+				return null;
+			}
+
+			if ($error === null) {
+				if ($hasVariable->yes()) {
+					if ($expr->name === '_SESSION') {
+						return null;
+					}
+
+					$type = $this->treatPhpDocTypesAsCertain ? $scope->getType($expr) : $scope->getNativeType($expr);
+					if (!$type instanceof NeverType) {
+						return $this->generateError(
+							$type,
+							sprintf('Variable $%s %s always exists and', $expr->name, $operatorDescription),
+							$typeMessageCallback,
+							$identifier,
+							'variable',
+						);
+					}
+				}
+
+				return RuleErrorBuilder::message(sprintf('Variable $%s %s is never defined.', $expr->name, $operatorDescription))
+					->identifier(sprintf('%s.variable', $identifier))
+					->build();
+			}
+
+			return $error;
+		} elseif ($expr instanceof Node\Expr\ArrayDimFetch && $expr->dim !== null) {
+			$type = $this->treatPhpDocTypesAsCertain
+				? $scope->getType($expr->var)
+				: $scope->getNativeType($expr->var);
+			if (!$type->isOffsetAccessible()->yes()) {
+				return $error ?? $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+			}
+
+			$dimType = $this->treatPhpDocTypesAsCertain
+				? $scope->getType($expr->dim)
+				: $scope->getNativeType($expr->dim);
+			$hasOffsetValue = $type->hasOffsetValueType($dimType);
+			if ($hasOffsetValue->no()) {
+				if (!$this->checkAdvancedIsset) {
+					return null;
+				}
+
+				return RuleErrorBuilder::message(
+					sprintf(
+						'Offset %s on %s %s does not exist.',
+						$dimType->describe(VerbosityLevel::value()),
+						$type->describe(VerbosityLevel::value()),
+						$operatorDescription,
+					),
+				)->identifier(sprintf('%s.offset', $identifier))->build();
+			}
+
+			// If offset cannot be null, store this error message and see if one of the earlier offsets is.
+			// E.g. $array['a']['b']['c'] ?? null; is a valid coalesce if a OR b or C might be null.
+			if ($hasOffsetValue->yes() || $scope->hasExpressionType($expr)->yes()) {
+				if (!$this->checkAdvancedIsset) {
+					return null;
+				}
+
+				$error ??= $this->generateError($type->getOffsetValueType($dimType), sprintf(
+					'Offset %s on %s %s always exists and',
+					$dimType->describe(VerbosityLevel::value()),
+					$type->describe(VerbosityLevel::value()),
+					$operatorDescription,
+				), $typeMessageCallback, $identifier, 'offset');
+
+				if ($error !== null) {
+					return $this->check($expr->var, $scope, $operatorDescription, $identifier, $typeMessageCallback, $error);
+				}
+			}
+
+			// Has offset, it is nullable
+			return null;
+
+		} elseif ($expr instanceof Node\Expr\PropertyFetch || $expr instanceof Node\Expr\StaticPropertyFetch) {
+
+			$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($expr, $scope);
+
+			if ($propertyReflection === null) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->checkUndefined($expr->class, $scope, $operatorDescription, $identifier);
+				}
+
+				return null;
+			}
+
+			if (!$propertyReflection->isNative()) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->checkUndefined($expr->class, $scope, $operatorDescription, $identifier);
+				}
+
+				return null;
+			}
+
+			if ($propertyReflection->hasNativeType() && !$propertyReflection->isVirtual()->yes()) {
+				if (!$scope->hasExpressionType($expr)->yes()) {
+					if ($expr instanceof Node\Expr\PropertyFetch) {
+						return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+					}
+
+					if ($expr->class instanceof Expr) {
+						return $this->checkUndefined($expr->class, $scope, $operatorDescription, $identifier);
+					}
+
+					return null;
+				}
+			}
+
+			$propertyDescription = $this->propertyDescriptor->describeProperty($propertyReflection, $scope, $expr);
+			$propertyType = $propertyReflection->getWritableType();
+			if ($error !== null) {
+				return $error;
+			}
+			if (!$this->checkAdvancedIsset) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->checkUndefined($expr->class, $scope, $operatorDescription, $identifier);
+				}
+
+				return null;
+			}
+
+			$error = $this->generateError(
+				$propertyReflection->getWritableType(),
+				sprintf('%s (%s) %s', $propertyDescription, $propertyType->describe(VerbosityLevel::typeOnly()), $operatorDescription),
+				$typeMessageCallback,
+				$identifier,
+				'property',
+			);
+
+			if ($error !== null) {
+				if ($expr instanceof Node\Expr\PropertyFetch) {
+					return $this->check($expr->var, $scope, $operatorDescription, $identifier, $typeMessageCallback, $error);
+				}
+
+				if ($expr->class instanceof Expr) {
+					return $this->check($expr->class, $scope, $operatorDescription, $identifier, $typeMessageCallback, $error);
+				}
+			}
+
+			return $error;
+		}
+
+		if ($error !== null) {
+			return $error;
+		}
+
+		if (!$this->checkAdvancedIsset) {
+			return null;
+		}
+
+		$error = $this->generateError(
+			$this->treatPhpDocTypesAsCertain ? $scope->getType($expr) : $scope->getNativeType($expr),
+			sprintf('Expression %s', $operatorDescription),
+			$typeMessageCallback,
+			$identifier,
+			'expr',
+		);
+		if ($error !== null) {
+			return $error;
+		}
+
+		if ($expr instanceof Expr\NullsafePropertyFetch) {
+			if ($expr->name instanceof Node\Identifier) {
+				return RuleErrorBuilder::message(sprintf('Using nullsafe property access "?->%s" %s is unnecessary. Use -> instead.', $expr->name->name, $operatorDescription))
+					->identifier('nullsafe.neverNull')
+					->build();
+			}
+
+			return RuleErrorBuilder::message(sprintf('Using nullsafe property access "?->(Expression)" %s is unnecessary. Use -> instead.', $operatorDescription))
+				->identifier('nullsafe.neverNull')
+				->build();
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param ErrorIdentifier $identifier
+	 */
+	private function checkUndefined(Expr $expr, Scope $scope, string $operatorDescription, string $identifier): ?IdentifierRuleError
+	{
+		if ($expr instanceof Node\Expr\Variable && is_string($expr->name)) {
+			$hasVariable = $scope->hasVariableType($expr->name);
+			if (!$hasVariable->no()) {
+				return null;
+			}
+
+			return RuleErrorBuilder::message(sprintf('Variable $%s %s is never defined.', $expr->name, $operatorDescription))
+				->identifier(sprintf('%s.variable', $identifier))
+				->build();
+		}
+
+		if ($expr instanceof Node\Expr\ArrayDimFetch && $expr->dim !== null) {
+			$type = $this->treatPhpDocTypesAsCertain ? $scope->getType($expr->var) : $scope->getNativeType($expr->var);
+			$dimType = $this->treatPhpDocTypesAsCertain ? $scope->getType($expr->dim) : $scope->getNativeType($expr->dim);
+			$hasOffsetValue = $type->hasOffsetValueType($dimType);
+			if (!$type->isOffsetAccessible()->yes()) {
+				return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+			}
+
+			if (!$hasOffsetValue->no()) {
+				return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+			}
+
+			return RuleErrorBuilder::message(
+				sprintf(
+					'Offset %s on %s %s does not exist.',
+					$dimType->describe(VerbosityLevel::value()),
+					$type->describe(VerbosityLevel::value()),
+					$operatorDescription,
+				),
+			)->identifier(sprintf('%s.offset', $identifier))->build();
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			return $this->checkUndefined($expr->var, $scope, $operatorDescription, $identifier);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			return $this->checkUndefined($expr->class, $scope, $operatorDescription, $identifier);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param callable(Type): ?string $typeMessageCallback
+	 * @param ErrorIdentifier $identifier
+	 * @param 'variable'|'offset'|'property'|'expr' $identifierSecondPart
+	 */
+	private function generateError(Type $type, string $message, callable $typeMessageCallback, string $identifier, string $identifierSecondPart): ?IdentifierRuleError
+	{
+		$typeMessage = $typeMessageCallback($type);
+		if ($typeMessage === null) {
+			return null;
+		}
+
+		return RuleErrorBuilder::message(
+			sprintf('%s %s.', $message, $typeMessage),
+		)->identifier(sprintf('%s.%s', $identifier, $identifierSecondPart))->build();
+	}
+
+}
diff --git a/src/Rules/Keywords/ContinueBreakInLoopRule.php b/src/Rules/Keywords/ContinueBreakInLoopRule.php
new file mode 100644
index 00000000..343037a7
--- /dev/null
+++ b/src/Rules/Keywords/ContinueBreakInLoopRule.php
@@ -0,0 +1,83 @@
+<?php 
+
+namespace PHPStan\Rules\Keywords;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt;
+use PHPStan\Analyser\Scope;
+use PHPStan\Parser\ParentStmtTypesVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_reverse;
+use function sprintf;
+
+/**
+ * @implements Rule<Stmt>
+ */
+final class ContinueBreakInLoopRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Stmt::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node instanceof Stmt\Continue_ && !$node instanceof Stmt\Break_) {
+			return [];
+		}
+
+		if (!$node->num instanceof Node\Scalar\Int_) {
+			$value = 1;
+		} else {
+			$value = $node->num->value;
+		}
+
+		$parentStmtTypes = array_reverse($node->getAttribute(ParentStmtTypesVisitor::ATTRIBUTE_NAME));
+		foreach ($parentStmtTypes as $parentStmtType) {
+			if ($parentStmtType === Stmt\Case_::class) {
+				continue;
+			}
+			if ($parentStmtType === Node\Expr\Closure::class) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Keyword %s used outside of a loop or a switch statement.',
+						$node instanceof Stmt\Continue_ ? 'continue' : 'break',
+					))
+						->nonIgnorable()
+						->identifier(sprintf('%s.outOfLoop', $node instanceof Stmt\Continue_ ? 'continue' : 'break'))
+						->build(),
+				];
+			}
+			if (
+				$parentStmtType === Stmt\For_::class
+				|| $parentStmtType === Stmt\Foreach_::class
+				|| $parentStmtType === Stmt\Do_::class
+				|| $parentStmtType === Stmt\While_::class
+				|| $parentStmtType === Stmt\Switch_::class
+			) {
+				$value--;
+			}
+			if ($value === 0) {
+				break;
+			}
+		}
+
+		if ($value > 0) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Keyword %s used outside of a loop or a switch statement.',
+					$node instanceof Stmt\Continue_ ? 'continue' : 'break',
+				))
+					->nonIgnorable()
+					->identifier(sprintf('%s.outOfLoop', $node instanceof Stmt\Continue_ ? 'continue' : 'break'))
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Keywords/DeclareStrictTypesRule.php b/src/Rules/Keywords/DeclareStrictTypesRule.php
new file mode 100644
index 00000000..657d6419
--- /dev/null
+++ b/src/Rules/Keywords/DeclareStrictTypesRule.php
@@ -0,0 +1,81 @@
+<?php 
+
+namespace PHPStan\Rules\Keywords;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Parser\DeclarePositionVisitor;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Stmt\Declare_>
+ */
+final class DeclareStrictTypesRule implements Rule
+{
+
+	public function __construct(
+		private readonly ExprPrinter $exprPrinter,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Stmt\Declare_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$declaresStrictTypes = false;
+		foreach ($node->declares as $declare) {
+			if (
+				$declare->key->name !== 'strict_types'
+			) {
+				continue;
+			}
+
+			if (
+				!$declare->value instanceof Node\Scalar\Int_
+				|| !in_array($declare->value->value, [0, 1], true)
+			) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						sprintf(
+							'Declare strict_types must have 0 or 1 as its value, %s given.',
+							$this->exprPrinter->printExpr($declare->value),
+						),
+					))->identifier('declareStrictTypes.value')->nonIgnorable()->build(),
+				];
+			}
+
+			$declaresStrictTypes = true;
+			break;
+		}
+
+		if ($declaresStrictTypes === false) {
+			return [];
+		}
+
+		if (!$node->hasAttribute(DeclarePositionVisitor::ATTRIBUTE_NAME)) {
+			return [];
+		}
+
+		$isFirstStatement = (bool) $node->getAttribute(DeclarePositionVisitor::ATTRIBUTE_NAME);
+		if ($isFirstStatement) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Declare strict_types must be the very first statement.',
+			))->identifier('declareStrictTypes.notFirst')->nonIgnorable()->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Keywords/RequireFileExistsRule.php b/src/Rules/Keywords/RequireFileExistsRule.php
new file mode 100644
index 00000000..cf355fe2
--- /dev/null
+++ b/src/Rules/Keywords/RequireFileExistsRule.php
@@ -0,0 +1,138 @@
+<?php 
+
+namespace PHPStan\Rules\Keywords;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Include_;
+use PHPStan\Analyser\Scope;
+use PHPStan\File\FileHelper;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function array_merge;
+use function dirname;
+use function explode;
+use function get_include_path;
+use function is_file;
+use function sprintf;
+use const PATH_SEPARATOR;
+
+/**
+ * @implements Rule<Include_>
+ */
+final class RequireFileExistsRule implements Rule
+{
+
+	public function __construct(private string $currentWorkingDirectory)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Include_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		$paths = $this->resolveFilePaths($node, $scope);
+
+		foreach ($paths as $path) {
+			if ($this->doesFileExist($path, $scope)) {
+				continue;
+			}
+
+			$errors[] = $this->getErrorMessage($node, $path);
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * We cannot use `stream_resolve_include_path` as it works based on the calling script.
+	 * This method simulates the behavior of `stream_resolve_include_path` but for the given scope.
+	 * The priority order is the following:
+	 * 	1. The current working directory.
+	 * 	2. The include path.
+	 *  3. The path of the script that is being executed.
+	 */
+	private function doesFileExist(string $path, Scope $scope): bool
+	{
+		$directories = array_merge(
+			[$this->currentWorkingDirectory],
+			explode(PATH_SEPARATOR, get_include_path()),
+			[dirname($scope->getFile())],
+		);
+
+		foreach ($directories as $directory) {
+			if ($this->doesFileExistForDirectory($path, $directory)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	private function doesFileExistForDirectory(string $path, string $workingDirectory): bool
+	{
+		$fileHelper = new FileHelper($workingDirectory);
+		$absolutePath = $fileHelper->absolutizePath($path);
+
+		return is_file($absolutePath);
+	}
+
+	private function getErrorMessage(Include_ $node, string $filePath): IdentifierRuleError
+	{
+		$message = 'Path in %s() "%s" is not a file or it does not exist.';
+
+		switch ($node->type) {
+			case Include_::TYPE_REQUIRE:
+				$type = 'require';
+				$identifierType = 'require';
+				break;
+			case Include_::TYPE_REQUIRE_ONCE:
+				$type = 'require_once';
+				$identifierType = 'requireOnce';
+				break;
+			case Include_::TYPE_INCLUDE:
+				$type = 'include';
+				$identifierType = 'include';
+				break;
+			case Include_::TYPE_INCLUDE_ONCE:
+				$type = 'include_once';
+				$identifierType = 'includeOnce';
+				break;
+			default:
+				throw new ShouldNotHappenException('Rule should have already validated the node type.');
+		}
+
+		$identifier = sprintf('%s.fileNotFound', $identifierType);
+
+		return RuleErrorBuilder::message(
+			sprintf(
+				$message,
+				$type,
+				$filePath,
+			),
+		)->identifier($identifier)->build();
+	}
+
+	/**
+	 * @return array<string>
+	 */
+	private function resolveFilePaths(Include_ $node, Scope $scope): array
+	{
+		$paths = [];
+		$type = $scope->getType($node->expr);
+		$constantStrings = $type->getConstantStrings();
+
+		foreach ($constantStrings as $constantString) {
+			$paths[] = $constantString->getValue();
+		}
+
+		return $paths;
+	}
+
+}
diff --git a/src/Rules/LazyRegistry.php b/src/Rules/LazyRegistry.php
new file mode 100644
index 00000000..df36e182
--- /dev/null
+++ b/src/Rules/LazyRegistry.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PHPStan\DependencyInjection\Container;
+use function class_implements;
+use function class_parents;
+
+final class LazyRegistry implements Registry
+{
+
+	public const RULE_TAG = 'phpstan.rules.rule';
+
+	/** @var Rule[][]|null */
+	private ?array $rules = null;
+
+	/** @var Rule[][] */
+	private array $cache = [];
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	/**
+	 * @template TNodeType of Node
+	 * @param class-string<TNodeType> $nodeType
+	 * @return array<Rule<TNodeType>>
+	 */
+	public function getRules(string $nodeType): array
+	{
+		if (!isset($this->cache[$nodeType])) {
+			$parentNodeTypes = [$nodeType] + class_parents($nodeType) + class_implements($nodeType);
+
+			$rules = [];
+			$rulesFromContainer = $this->getRulesFromContainer();
+			foreach ($parentNodeTypes as $parentNodeType) {
+				foreach ($rulesFromContainer[$parentNodeType] ?? [] as $rule) {
+					$rules[] = $rule;
+				}
+			}
+
+			$this->cache[$nodeType] = $rules;
+		}
+
+		/**
+		 * @var array<Rule<TNodeType>> $selectedRules
+		 */
+		$selectedRules = $this->cache[$nodeType];
+
+		return $selectedRules;
+	}
+
+	/**
+	 * @return Rule[][]
+	 */
+	private function getRulesFromContainer(): array
+	{
+		if ($this->rules !== null) {
+			return $this->rules;
+		}
+
+		$rules = [];
+		foreach ($this->container->getServicesByTag(self::RULE_TAG) as $rule) {
+			$rules[$rule->getNodeType()][] = $rule;
+		}
+
+		return $this->rules = $rules;
+	}
+
+}
diff --git a/src/Rules/LineRuleError.php b/src/Rules/LineRuleError.php
new file mode 100644
index 00000000..d168a413
--- /dev/null
+++ b/src/Rules/LineRuleError.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface LineRuleError extends RuleError
+{
+
+	public function getLine(): int;
+
+}
diff --git a/src/Rules/MetadataRuleError.php b/src/Rules/MetadataRuleError.php
new file mode 100644
index 00000000..49150aba
--- /dev/null
+++ b/src/Rules/MetadataRuleError.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface MetadataRuleError extends RuleError
+{
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array;
+
+}
diff --git a/src/Rules/Methods/AbstractMethodInNonAbstractClassRule.php b/src/Rules/Methods/AbstractMethodInNonAbstractClassRule.php
new file mode 100644
index 00000000..91f50913
--- /dev/null
+++ b/src/Rules/Methods/AbstractMethodInNonAbstractClassRule.php
@@ -0,0 +1,76 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassMethod>
+ */
+final class AbstractMethodInNonAbstractClassRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassMethod::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$class = $scope->getClassReflection();
+
+		if (!$class->isAbstract() && $node->isAbstract()) {
+			if ($class->isEnum()) {
+				$lowercasedMethodName = $node->name->toLowerString();
+				if ($lowercasedMethodName === 'cases') {
+					return [];
+				}
+				if ($class->isBackedEnum()) {
+					if (in_array($lowercasedMethodName, ['from', 'tryfrom'], true)) {
+						return [];
+					}
+				}
+			}
+
+			$description = $class->getClassTypeDescription();
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'%s %s contains abstract method %s().',
+					$description === 'Class' ? 'Non-abstract class' : $description,
+					$class->getDisplayName(),
+					$node->name->toString(),
+				))
+					->nonIgnorable()
+					->identifier('method.abstract')
+					->build(),
+			];
+		}
+
+		if (!$class->isAbstract() && !$class->isInterface() && $node->getStmts() === null) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Non-abstract method %s::%s() must contain a body.',
+					$class->getDisplayName(),
+					$node->name->toString(),
+				))
+					->nonIgnorable()
+					->identifier('method.nonAbstract')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Methods/AbstractPrivateMethodRule.php b/src/Rules/Methods/AbstractPrivateMethodRule.php
new file mode 100644
index 00000000..6d5c23fa
--- /dev/null
+++ b/src/Rules/Methods/AbstractPrivateMethodRule.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/** @implements Rule<InClassMethodNode> */
+final class AbstractPrivateMethodRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+
+		if (!$method->isPrivate()) {
+			return [];
+		}
+
+		if (!$method->isAbstract()->yes()) {
+			return [];
+		}
+
+		if ($scope->isInTrait()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		if ($classReflection === null) {
+			return [];
+		}
+
+		if (!$classReflection->isAbstract() && !$classReflection->isInterface()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Private method %s::%s() cannot be abstract.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))
+				->identifier('method.abstractPrivate')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/AlwaysUsedMethodExtension.php b/src/Rules/Methods/AlwaysUsedMethodExtension.php
new file mode 100644
index 00000000..9f69fd19
--- /dev/null
+++ b/src/Rules/Methods/AlwaysUsedMethodExtension.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PHPStan\Reflection\ExtendedMethodReflection;
+
+/**
+ * This is the extension interface to implement if you want to describe an always-used class method.
+ *
+ * To register it in the configuration file use the `phpstan.methods.alwaysUsedMethodExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.methods.alwaysUsedMethodExtension
+ * ```
+ *
+ * @api
+ */
+interface AlwaysUsedMethodExtension
+{
+
+	public function isAlwaysUsed(ExtendedMethodReflection $methodReflection): bool;
+
+}
diff --git a/src/Rules/Methods/AlwaysUsedMethodExtensionProvider.php b/src/Rules/Methods/AlwaysUsedMethodExtensionProvider.php
new file mode 100644
index 00000000..007be761
--- /dev/null
+++ b/src/Rules/Methods/AlwaysUsedMethodExtensionProvider.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+interface AlwaysUsedMethodExtensionProvider
+{
+
+	public const EXTENSION_TAG = 'phpstan.methods.alwaysUsedMethodExtension';
+
+	/**
+	 * @return AlwaysUsedMethodExtension[]
+	 */
+	public function getExtensions(): array;
+
+}
diff --git a/src/Rules/Methods/CallMethodsRule.php b/src/Rules/Methods/CallMethodsRule.php
new file mode 100644
index 00000000..d333e56e
--- /dev/null
+++ b/src/Rules/Methods/CallMethodsRule.php
@@ -0,0 +1,79 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\Rule;
+use function array_merge;
+
+/**
+ * @implements Rule<Node\Expr\MethodCall>
+ */
+final class CallMethodsRule implements Rule
+{
+
+	public function __construct(
+		private MethodCallCheck $methodCallCheck,
+		private FunctionCallParametersCheck $parametersCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		$methodName = $node->name->name;
+
+		[$errors, $methodReflection] = $this->methodCallCheck->check($scope, $methodName, $node->var);
+		if ($methodReflection === null) {
+			return $errors;
+		}
+
+		$declaringClass = $methodReflection->getDeclaringClass();
+		$messagesMethodName = SprintfHelper::escapeFormatString($declaringClass->getDisplayName() . '::' . $methodReflection->getName() . '()');
+
+		return array_merge($errors, $this->parametersCheck->check(
+			ParametersAcceptorSelector::selectFromArgs(
+				$scope,
+				$node->getArgs(),
+				$methodReflection->getVariants(),
+				$methodReflection->getNamedArgumentsVariants(),
+			),
+			$scope,
+			$declaringClass->isBuiltin(),
+			$node,
+			'method',
+			$methodReflection->acceptsNamedArguments(),
+			'Method ' . $messagesMethodName . ' invoked with %d parameter, %d required.',
+			'Method ' . $messagesMethodName . ' invoked with %d parameters, %d required.',
+			'Method ' . $messagesMethodName . ' invoked with %d parameter, at least %d required.',
+			'Method ' . $messagesMethodName . ' invoked with %d parameters, at least %d required.',
+			'Method ' . $messagesMethodName . ' invoked with %d parameter, %d-%d required.',
+			'Method ' . $messagesMethodName . ' invoked with %d parameters, %d-%d required.',
+			'%s of method ' . $messagesMethodName . ' expects %s, %s given.',
+			'Result of method ' . $messagesMethodName . ' (void) is used.',
+			'%s of method ' . $messagesMethodName . ' is passed by reference, so it expects variables only.',
+			'Unable to resolve the template type %s in call to method ' . $messagesMethodName,
+			'Missing parameter $%s in call to method ' . $messagesMethodName . '.',
+			'Unknown parameter $%s in call to method ' . $messagesMethodName . '.',
+			'Return type of call to method ' . $messagesMethodName . ' contains unresolvable type.',
+			'%s of method ' . $messagesMethodName . ' contains unresolvable type.',
+			'Method ' . $messagesMethodName . ' invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+		));
+	}
+
+}
diff --git a/src/Rules/Methods/CallPrivateMethodThroughStaticRule.php b/src/Rules/Methods/CallPrivateMethodThroughStaticRule.php
new file mode 100644
index 00000000..272d6c19
--- /dev/null
+++ b/src/Rules/Methods/CallPrivateMethodThroughStaticRule.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<StaticCall>
+ */
+final class CallPrivateMethodThroughStaticRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return StaticCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+		if (!$node->class instanceof Name) {
+			return [];
+		}
+
+		$methodName = $node->name->name;
+		$className = $node->class;
+		if ($className->toLowerString() !== 'static') {
+			return [];
+		}
+
+		$classType = $scope->resolveTypeByName($className);
+		if (!$classType->hasMethod($methodName)->yes()) {
+			return [];
+		}
+
+		$method = $classType->getMethod($methodName, $scope);
+		if (!$method->isPrivate()) {
+			return [];
+		}
+
+		if ($scope->isInClass() && $scope->getClassReflection()->isFinal()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Unsafe call to private method %s::%s() through static::.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('staticClassAccess.privateMethod')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/CallStaticMethodsRule.php b/src/Rules/Methods/CallStaticMethodsRule.php
new file mode 100644
index 00000000..2f2f6ff5
--- /dev/null
+++ b/src/Rules/Methods/CallStaticMethodsRule.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Rules\FunctionCallParametersCheck;
+use PHPStan\Rules\Rule;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\StaticCall>
+ */
+final class CallStaticMethodsRule implements Rule
+{
+
+	public function __construct(
+		private StaticMethodCallCheck $methodCallCheck,
+		private FunctionCallParametersCheck $parametersCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return StaticCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Identifier) {
+			return [];
+		}
+		$methodName = $node->name->name;
+
+		[$errors, $method] = $this->methodCallCheck->check($scope, $methodName, $node->class);
+		if ($method === null) {
+			return $errors;
+		}
+
+		$displayMethodName = SprintfHelper::escapeFormatString(sprintf(
+			'%s %s',
+			$method->isStatic() ? 'Static method' : 'Method',
+			$method->getDeclaringClass()->getDisplayName() . '::' . $method->getName() . '()',
+		));
+		$lowercasedMethodName = SprintfHelper::escapeFormatString(sprintf(
+			'%s %s',
+			$method->isStatic() ? 'static method' : 'method',
+			$method->getDeclaringClass()->getDisplayName() . '::' . $method->getName() . '()',
+		));
+
+		$errors = array_merge($errors, $this->parametersCheck->check(
+			ParametersAcceptorSelector::selectFromArgs(
+				$scope,
+				$node->getArgs(),
+				$method->getVariants(),
+				$method->getNamedArgumentsVariants(),
+			),
+			$scope,
+			$method->getDeclaringClass()->isBuiltin(),
+			$node,
+			'staticMethod',
+			$method->acceptsNamedArguments(),
+			$displayMethodName . ' invoked with %d parameter, %d required.',
+			$displayMethodName . ' invoked with %d parameters, %d required.',
+			$displayMethodName . ' invoked with %d parameter, at least %d required.',
+			$displayMethodName . ' invoked with %d parameters, at least %d required.',
+			$displayMethodName . ' invoked with %d parameter, %d-%d required.',
+			$displayMethodName . ' invoked with %d parameters, %d-%d required.',
+			'%s of ' . $lowercasedMethodName . ' expects %s, %s given.',
+			'Result of ' . $lowercasedMethodName . ' (void) is used.',
+			'%s of ' . $lowercasedMethodName . ' is passed by reference, so it expects variables only.',
+			'Unable to resolve the template type %s in call to method ' . $lowercasedMethodName,
+			'Missing parameter $%s in call to ' . $lowercasedMethodName . '.',
+			'Unknown parameter $%s in call to ' . $lowercasedMethodName . '.',
+			'Return type of call to ' . $lowercasedMethodName . ' contains unresolvable type.',
+			'%s of ' . $lowercasedMethodName . ' contains unresolvable type.',
+			$displayMethodName . ' invoked with %s, but it\'s not allowed because of @no-named-arguments.',
+		));
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Methods/CallToConstructorStatementWithoutSideEffectsRule.php b/src/Rules/Methods/CallToConstructorStatementWithoutSideEffectsRule.php
new file mode 100644
index 00000000..fabc3a99
--- /dev/null
+++ b/src/Rules/Methods/CallToConstructorStatementWithoutSideEffectsRule.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\NoopExpressionNode;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\NeverType;
+use function sprintf;
+
+/**
+ * @implements Rule<NoopExpressionNode>
+ */
+final class CallToConstructorStatementWithoutSideEffectsRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NoopExpressionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$instantiation = $node->getOriginalExpr();
+		if (!$instantiation instanceof Node\Expr\New_) {
+			return [];
+		}
+
+		if (!$instantiation->class instanceof Node\Name) {
+			return [];
+		}
+
+		$className = $scope->resolveName($instantiation->class);
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if (!$classReflection->hasConstructor()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Call to new %s() on a separate line has no effect.',
+					$classReflection->getDisplayName(),
+				))->identifier('new.resultUnused')->build(),
+			];
+		}
+
+		$constructor = $classReflection->getConstructor();
+		$methodResult = $scope->getType($instantiation);
+		if ($methodResult instanceof NeverType && $methodResult->isExplicit()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Call to %s::%s() on a separate line has no effect.',
+				$classReflection->getDisplayName(),
+				$constructor->getName(),
+			))->identifier('new.resultUnused')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/CallToMethodStatementWithoutSideEffectsRule.php b/src/Rules/Methods/CallToMethodStatementWithoutSideEffectsRule.php
new file mode 100644
index 00000000..67c28eec
--- /dev/null
+++ b/src/Rules/Methods/CallToMethodStatementWithoutSideEffectsRule.php
@@ -0,0 +1,82 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\NoopExpressionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use function sprintf;
+
+/**
+ * @implements Rule<NoopExpressionNode>
+ */
+final class CallToMethodStatementWithoutSideEffectsRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NoopExpressionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methodCall = $node->getOriginalExpr();
+		if ($methodCall instanceof Node\Expr\NullsafeMethodCall) {
+			$scope = $scope->filterByTruthyValue(new Node\Expr\BinaryOp\NotIdentical($methodCall->var, new Node\Expr\ConstFetch(new Node\Name('null'))));
+		} elseif (!$methodCall instanceof Node\Expr\MethodCall) {
+			return [];
+		}
+
+		if (!$methodCall->name instanceof Node\Identifier) {
+			return [];
+		}
+		$methodName = $methodCall->name->toString();
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $methodCall->var),
+			'',
+			static fn (Type $type): bool => $type->canCallMethods()->yes() && $type->hasMethod($methodName)->yes(),
+		);
+		$calledOnType = $typeResult->getType();
+		if ($calledOnType instanceof ErrorType) {
+			return [];
+		}
+		if (!$calledOnType->canCallMethods()->yes()) {
+			return [];
+		}
+
+		if (!$calledOnType->hasMethod($methodName)->yes()) {
+			return [];
+		}
+
+		$methodResult = $scope->getType($methodCall);
+		if ($methodResult instanceof NeverType && $methodResult->isExplicit()) {
+			return [];
+		}
+
+		$method = $calledOnType->getMethod($methodName, $scope);
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Call to %s %s::%s() on a separate line has no effect.',
+				$method->isStatic() ? 'static method' : 'method',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('method.resultUnused')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/CallToStaticMethodStatementWithoutSideEffectsRule.php b/src/Rules/Methods/CallToStaticMethodStatementWithoutSideEffectsRule.php
new file mode 100644
index 00000000..1ce81ac6
--- /dev/null
+++ b/src/Rules/Methods/CallToStaticMethodStatementWithoutSideEffectsRule.php
@@ -0,0 +1,104 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\NoopExpressionNode;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<NoopExpressionNode>
+ */
+final class CallToStaticMethodStatementWithoutSideEffectsRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NoopExpressionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$staticCall = $node->getOriginalExpr();
+		if (!$staticCall instanceof Node\Expr\StaticCall) {
+			return [];
+		}
+
+		if (!$staticCall->name instanceof Node\Identifier) {
+			return [];
+		}
+
+		$methodName = $staticCall->name->toString();
+		if ($staticCall->class instanceof Node\Name) {
+			$className = $scope->resolveName($staticCall->class);
+			if (!$this->reflectionProvider->hasClass($className)) {
+				return [];
+			}
+
+			$calledOnType = new ObjectType($className);
+		} else {
+			$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $staticCall->class),
+				'',
+				static fn (Type $type): bool => $type->canCallMethods()->yes() && $type->hasMethod($methodName)->yes(),
+			);
+			$calledOnType = $typeResult->getType();
+			if ($calledOnType instanceof ErrorType) {
+				return [];
+			}
+		}
+
+		if (!$calledOnType->canCallMethods()->yes()) {
+			return [];
+		}
+
+		if (!$calledOnType->hasMethod($methodName)->yes()) {
+			return [];
+		}
+
+		$method = $calledOnType->getMethod($methodName, $scope);
+		if (
+			(
+				strtolower($method->getName()) === '__construct'
+				|| strtolower($method->getName()) === strtolower($method->getDeclaringClass()->getName())
+			)
+		) {
+			return [];
+		}
+
+		$methodResult = $scope->getType($staticCall);
+		if ($methodResult instanceof NeverType && $methodResult->isExplicit()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Call to %s %s::%s() on a separate line has no effect.',
+				$method->isStatic() ? 'static method' : 'method',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('staticMethod.resultUnused')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/ConsistentConstructorRule.php b/src/Rules/Methods/ConsistentConstructorRule.php
new file mode 100644
index 00000000..dac0903f
--- /dev/null
+++ b/src/Rules/Methods/ConsistentConstructorRule.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Reflection\Dummy\DummyConstructorReflection;
+use PHPStan\Rules\Rule;
+use function array_merge;
+use function strtolower;
+
+/** @implements Rule<InClassMethodNode> */
+final class ConsistentConstructorRule implements Rule
+{
+
+	public function __construct(
+		private MethodParameterComparisonHelper $methodParameterComparisonHelper,
+		private MethodVisibilityComparisonHelper $methodVisibilityComparisonHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		if (strtolower($method->getName()) !== '__construct') {
+			return [];
+		}
+
+		$parent = $method->getDeclaringClass()->getParentClass();
+
+		if ($parent === null) {
+			return [];
+		}
+
+		if ($parent->hasConstructor()) {
+			$parentConstructor = $parent->getConstructor();
+		} else {
+			$parentConstructor = new DummyConstructorReflection($parent);
+		}
+
+		if (! $parentConstructor->getDeclaringClass()->hasConsistentConstructor()) {
+			return [];
+		}
+
+		return array_merge(
+			$this->methodParameterComparisonHelper->compare($parentConstructor, $parentConstructor->getDeclaringClass(), $method, true),
+			$this->methodVisibilityComparisonHelper->compare($parentConstructor, $parentConstructor->getDeclaringClass(), $method),
+		);
+	}
+
+}
diff --git a/src/Rules/Methods/ConstructorReturnTypeRule.php b/src/Rules/Methods/ConstructorReturnTypeRule.php
new file mode 100644
index 00000000..bf3e937c
--- /dev/null
+++ b/src/Rules/Methods/ConstructorReturnTypeRule.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class ConstructorReturnTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$methodNode = $node->getOriginalNode();
+		if ($scope->isInTrait()) {
+			$originalMethodName = $methodNode->getAttribute('originalTraitMethodName');
+			if (
+				$originalMethodName === '__construct'
+				&& $methodNode->returnType !== null
+			) {
+				return [
+					RuleErrorBuilder::message(sprintf('Original constructor of trait %s has a return type.', $scope->getTraitReflection()->getDisplayName()))
+						->identifier('constructor.returnType')
+						->nonIgnorable()
+						->build(),
+				];
+			}
+		}
+		if (!$classReflection->hasConstructor()) {
+			return [];
+		}
+
+		$constructorReflection = $classReflection->getConstructor();
+		$methodReflection = $node->getMethodReflection();
+		if ($methodReflection->getName() !== $constructorReflection->getName()) {
+			return [];
+		}
+
+		if ($methodNode->returnType === null) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Constructor of class %s has a return type.', $classReflection->getDisplayName()))
+				->identifier('constructor.returnType')
+				->nonIgnorable()
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/DirectAlwaysUsedMethodExtensionProvider.php b/src/Rules/Methods/DirectAlwaysUsedMethodExtensionProvider.php
new file mode 100644
index 00000000..61dc47a6
--- /dev/null
+++ b/src/Rules/Methods/DirectAlwaysUsedMethodExtensionProvider.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+final class DirectAlwaysUsedMethodExtensionProvider implements AlwaysUsedMethodExtensionProvider
+{
+
+	/**
+	 * @param AlwaysUsedMethodExtension[] $extensions
+	 */
+	public function __construct(private array $extensions)
+	{
+	}
+
+	public function getExtensions(): array
+	{
+		return $this->extensions;
+	}
+
+}
diff --git a/src/Rules/Methods/ExistingClassesInTypehintsRule.php b/src/Rules/Methods/ExistingClassesInTypehintsRule.php
new file mode 100644
index 00000000..154247df
--- /dev/null
+++ b/src/Rules/Methods/ExistingClassesInTypehintsRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class ExistingClassesInTypehintsRule implements Rule
+{
+
+	public function __construct(private FunctionDefinitionCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methodReflection = $node->getMethodReflection();
+		$className = SprintfHelper::escapeFormatString($node->getClassReflection()->getDisplayName());
+		$methodName = SprintfHelper::escapeFormatString($methodReflection->getName());
+
+		return $this->check->checkClassMethod(
+			$methodReflection,
+			$node->getOriginalNode(),
+			sprintf(
+				'Parameter $%%s of method %s::%s() has invalid type %%s.',
+				$className,
+				$methodName,
+			),
+			sprintf(
+				'Method %s::%s() has invalid return type %%s.',
+				$className,
+				$methodName,
+			),
+			sprintf('Method %s::%s() uses native union types but they\'re supported only on PHP 8.0 and later.', $className, $methodName),
+			sprintf('Template type %%s of method %s::%s() is not referenced in a parameter.', $className, $methodName),
+			sprintf(
+				'Parameter $%%s of method %s::%s() has unresolvable native type.',
+				$className,
+				$methodName,
+			),
+			sprintf(
+				'Method %s::%s() has unresolvable native return type.',
+				$className,
+				$methodName,
+			),
+			sprintf(
+				'Method %s::%s() has invalid @phpstan-self-out type %%s.',
+				$className,
+				$methodName,
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Methods/FinalPrivateMethodRule.php b/src/Rules/Methods/FinalPrivateMethodRule.php
new file mode 100644
index 00000000..849716a6
--- /dev/null
+++ b/src/Rules/Methods/FinalPrivateMethodRule.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/** @implements Rule<InClassMethodNode> */
+final class FinalPrivateMethodRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		if ($scope->getPhpVersion()->producesWarningForFinalPrivateMethods()->no()) {
+			return [];
+		}
+
+		if ($method->getName() === '__construct') {
+			return [];
+		}
+
+		if (!$method->isFinal()->yes() || !$method->isPrivate()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Private method %s::%s() cannot be final as it is never overridden by other classes.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('method.finalPrivate')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/IncompatibleDefaultParameterTypeRule.php b/src/Rules/Methods/IncompatibleDefaultParameterTypeRule.php
new file mode 100644
index 00000000..c974ae50
--- /dev/null
+++ b/src/Rules/Methods/IncompatibleDefaultParameterTypeRule.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class IncompatibleDefaultParameterTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$errors = [];
+		foreach ($node->getOriginalNode()->getParams() as $paramI => $param) {
+			if ($param->default === null) {
+				continue;
+			}
+			if (
+				$param->var instanceof Node\Expr\Error
+				|| !is_string($param->var->name)
+			) {
+				throw new ShouldNotHappenException();
+			}
+
+			$defaultValueType = $scope->getType($param->default);
+			$parameter = $method->getParameters()[$paramI];
+			$parameterType = $parameter->getType();
+			$parameterType = TemplateTypeHelper::resolveToBounds($parameterType);
+
+			$accepts = $parameterType->accepts($defaultValueType, true);
+			if ($accepts->yes()) {
+				continue;
+			}
+
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($parameterType, $defaultValueType);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Default value of the parameter #%d $%s (%s) of method %s::%s() is incompatible with type %s.',
+				$paramI + 1,
+				$param->var->name,
+				$defaultValueType->describe($verbosityLevel),
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$parameterType->describe($verbosityLevel),
+			))
+				->line($param->getStartLine())
+				->identifier('parameter.defaultValue')
+				->acceptsReasonsTip($accepts->reasons)
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Methods/LazyAlwaysUsedMethodExtensionProvider.php b/src/Rules/Methods/LazyAlwaysUsedMethodExtensionProvider.php
new file mode 100644
index 00000000..929f5f75
--- /dev/null
+++ b/src/Rules/Methods/LazyAlwaysUsedMethodExtensionProvider.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyAlwaysUsedMethodExtensionProvider implements AlwaysUsedMethodExtensionProvider
+{
+
+	/** @var AlwaysUsedMethodExtension[]|null */
+	private ?array $extensions = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getExtensions(): array
+	{
+		return $this->extensions ??= $this->container->getServicesByTag(static::EXTENSION_TAG);
+	}
+
+}
diff --git a/src/Rules/Methods/MethodAttributesRule.php b/src/Rules/Methods/MethodAttributesRule.php
new file mode 100644
index 00000000..ba39dba3
--- /dev/null
+++ b/src/Rules/Methods/MethodAttributesRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MethodAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->getOriginalNode()->attrGroups,
+			Attribute::TARGET_METHOD,
+			'method',
+		);
+	}
+
+}
diff --git a/src/Rules/Methods/MethodCallCheck.php b/src/Rules/Methods/MethodCallCheck.php
new file mode 100644
index 00000000..97ccd545
--- /dev/null
+++ b/src/Rules/Methods/MethodCallCheck.php
@@ -0,0 +1,151 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+use function strtolower;
+
+final class MethodCallCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $checkFunctionNameCase,
+		private bool $reportMagicMethods,
+	)
+	{
+	}
+
+	/**
+	 * @return array{list<IdentifierRuleError>, ExtendedMethodReflection|null}
+	 */
+	public function check(
+		Scope $scope,
+		string $methodName,
+		Expr $var,
+	): array
+	{
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $var),
+			sprintf('Call to method %s() on an unknown class %%s.', SprintfHelper::escapeFormatString($methodName)),
+			static fn (Type $type): bool => $type->canCallMethods()->yes() && $type->hasMethod($methodName)->yes(),
+		);
+
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return [$typeResult->getUnknownClassErrors(), null];
+		}
+
+		$typeForDescribe = $type;
+		if ($type instanceof StaticType) {
+			$typeForDescribe = $type->getStaticObjectType();
+		}
+		if (!$type->canCallMethods()->yes() || $type->isClassString()->yes()) {
+			return [
+				[
+					RuleErrorBuilder::message(sprintf(
+						'Cannot call method %s() on %s.',
+						$methodName,
+						$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+					))->identifier('method.nonObject')->build(),
+				],
+				null,
+			];
+		}
+
+		if (!$type->hasMethod($methodName)->yes()) {
+			$directClassNames = $typeResult->getReferencedClasses();
+			if (!$this->reportMagicMethods) {
+				foreach ($directClassNames as $className) {
+					if (!$this->reflectionProvider->hasClass($className)) {
+						continue;
+					}
+
+					$classReflection = $this->reflectionProvider->getClass($className);
+					if ($classReflection->hasNativeMethod('__call')) {
+						return [[], null];
+					}
+				}
+			}
+
+			if (count($directClassNames) === 1) {
+				$referencedClass = $directClassNames[0];
+				$methodClassReflection = $this->reflectionProvider->getClass($referencedClass);
+				$parentClassReflection = $methodClassReflection->getParentClass();
+				while ($parentClassReflection !== null) {
+					if ($parentClassReflection->hasMethod($methodName)) {
+						$methodReflection = $parentClassReflection->getMethod($methodName, $scope);
+						return [
+							[
+								RuleErrorBuilder::message(sprintf(
+									'Call to private method %s() of parent class %s.',
+									$methodReflection->getName(),
+									$parentClassReflection->getDisplayName(),
+								))->identifier('method.private')->build(),
+							],
+							$methodReflection,
+						];
+					}
+
+					$parentClassReflection = $parentClassReflection->getParentClass();
+				}
+			}
+
+			return [
+				[
+					RuleErrorBuilder::message(sprintf(
+						'Call to an undefined method %s::%s().',
+						$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+						$methodName,
+					))->identifier('method.notFound')->build(),
+				],
+				null,
+			];
+		}
+
+		$methodReflection = $type->getMethod($methodName, $scope);
+		$declaringClass = $methodReflection->getDeclaringClass();
+		$messagesMethodName = SprintfHelper::escapeFormatString($declaringClass->getDisplayName() . '::' . $methodReflection->getName() . '()');
+		$errors = [];
+		if (!$scope->canCallMethod($methodReflection)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Call to %s method %s() of class %s.',
+				$methodReflection->isPrivate() ? 'private' : 'protected',
+				$methodReflection->getName(),
+				$declaringClass->getDisplayName(),
+			))
+				->identifier(sprintf('method.%s', $methodReflection->isPrivate() ? 'private' : 'protected'))
+				->build();
+		}
+
+		if (
+			$this->checkFunctionNameCase
+			&& strtolower($methodReflection->getName()) === strtolower($methodName)
+			&& $methodReflection->getName() !== $methodName
+		) {
+			$errors[] = RuleErrorBuilder::message(
+				sprintf('Call to method %s with incorrect case: %s', $messagesMethodName, $methodName),
+			)->identifier('method.nameCase')->build();
+		}
+
+		return [$errors, $methodReflection];
+	}
+
+}
diff --git a/src/Rules/Methods/MethodCallableRule.php b/src/Rules/Methods/MethodCallableRule.php
new file mode 100644
index 00000000..afa96e4a
--- /dev/null
+++ b/src/Rules/Methods/MethodCallableRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\MethodCallableNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodCallableNode>
+ */
+final class MethodCallableRule implements Rule
+{
+
+	public function __construct(private MethodCallCheck $methodCallCheck, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodCallableNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$this->phpVersion->supportsFirstClassCallables()) {
+			return [
+				RuleErrorBuilder::message('First-class callables are supported only on PHP 8.1 and later.')
+					->nonIgnorable()
+					->identifier('callable.notSupported')
+					->build(),
+			];
+		}
+
+		$methodName = $node->getName();
+		if (!$methodName instanceof Node\Identifier) {
+			return [];
+		}
+
+		$methodNameName = $methodName->toString();
+
+		[$errors, $methodReflection] = $this->methodCallCheck->check($scope, $methodNameName, $node->getVar());
+		if ($methodReflection === null) {
+			return $errors;
+		}
+
+		$declaringClass = $methodReflection->getDeclaringClass();
+		if ($declaringClass->hasNativeMethod($methodNameName)) {
+			return $errors;
+		}
+
+		$messagesMethodName = SprintfHelper::escapeFormatString($declaringClass->getDisplayName() . '::' . $methodReflection->getName() . '()');
+
+		$errors[] = RuleErrorBuilder::message(sprintf('Creating callable from a non-native method %s.', $messagesMethodName))
+			->identifier('callable.nonNativeMethod')
+			->build();
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Methods/MethodParameterComparisonHelper.php b/src/Rules/Methods/MethodParameterComparisonHelper.php
new file mode 100644
index 00000000..70e001d3
--- /dev/null
+++ b/src/Rules/Methods/MethodParameterComparisonHelper.php
@@ -0,0 +1,411 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\IterableType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use Traversable;
+use function array_key_exists;
+use function array_slice;
+use function count;
+use function sprintf;
+
+final class MethodParameterComparisonHelper
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function compare(ExtendedMethodReflection $prototype, ClassReflection $prototypeDeclaringClass, PhpMethodFromParserNodeReflection $method, bool $ignorable): array
+	{
+		/** @var list<IdentifierRuleError> $messages */
+		$messages = [];
+		$prototypeVariant = $prototype->getVariants()[0];
+
+		$methodParameters = $method->getParameters();
+
+		$prototypeAfterVariadic = false;
+		foreach ($prototypeVariant->getParameters() as $i => $prototypeParameter) {
+			if (!array_key_exists($i, $methodParameters)) {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Method %s::%s() overrides method %s::%s() but misses parameter #%d $%s.',
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+				))->identifier('parameter.missing');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+
+				continue;
+			}
+
+			$methodParameter = $methodParameters[$i];
+			if ($prototypeParameter->passedByReference()->no()) {
+				if (!$methodParameter->passedByReference()->no()) {
+					$error = RuleErrorBuilder::message(sprintf(
+						'Parameter #%d $%s of method %s::%s() is passed by reference but parameter #%d $%s of method %s::%s() is not passed by reference.',
+						$i + 1,
+						$methodParameter->getName(),
+						$method->getDeclaringClass()->getDisplayName(),
+						$method->getName(),
+						$i + 1,
+						$prototypeParameter->getName(),
+						$prototypeDeclaringClass->getDisplayName(true),
+						$prototype->getName(),
+					))->identifier('parameter.byRef');
+
+					if (! $ignorable) {
+						$error->nonIgnorable();
+					}
+
+					$messages[] = $error->build();
+				}
+			} elseif ($methodParameter->passedByReference()->no()) {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s of method %s::%s() is not passed by reference but parameter #%d $%s of method %s::%s() is passed by reference.',
+					$i + 1,
+					$methodParameter->getName(),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))->identifier('parameter.notByRef');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+			}
+
+			if ($prototypeParameter->isVariadic()) {
+				$prototypeAfterVariadic = true;
+				if (!$methodParameter->isVariadic()) {
+					if (!$methodParameter->isOptional()) {
+						if (count($methodParameters) !== $i + 1) {
+							$error = RuleErrorBuilder::message(sprintf(
+								'Parameter #%d $%s of method %s::%s() is not optional.',
+								$i + 1,
+								$methodParameter->getName(),
+								$method->getDeclaringClass()->getDisplayName(),
+								$method->getName(),
+							))->identifier('parameter.notOptional');
+
+							if (! $ignorable) {
+								$error->nonIgnorable();
+							}
+
+							$messages[] = $error->build();
+
+							continue;
+						}
+
+						$error = RuleErrorBuilder::message(sprintf(
+							'Parameter #%d $%s of method %s::%s() is not variadic but parameter #%d $%s of method %s::%s() is variadic.',
+							$i + 1,
+							$methodParameter->getName(),
+							$method->getDeclaringClass()->getDisplayName(),
+							$method->getName(),
+							$i + 1,
+							$prototypeParameter->getName(),
+							$prototypeDeclaringClass->getDisplayName(true),
+							$prototype->getName(),
+						))->identifier('parameter.notVariadic');
+
+						if (! $ignorable) {
+							$error->nonIgnorable();
+						}
+
+						$messages[] = $error->build();
+
+						continue;
+					} elseif (count($methodParameters) === $i + 1) {
+						$error = RuleErrorBuilder::message(sprintf(
+							'Parameter #%d $%s of method %s::%s() is not variadic.',
+							$i + 1,
+							$methodParameter->getName(),
+							$method->getDeclaringClass()->getDisplayName(),
+							$method->getName(),
+						))->identifier('parameter.notVariadic');
+
+						if (! $ignorable) {
+							$error->nonIgnorable();
+						}
+
+						$messages[] = $error->build();
+					}
+				}
+			} elseif ($methodParameter->isVariadic()) {
+				if ($this->phpVersion->supportsLessOverridenParametersWithVariadic()) {
+					$remainingPrototypeParameters = array_slice($prototypeVariant->getParameters(), $i);
+					foreach ($remainingPrototypeParameters as $j => $remainingPrototypeParameter) {
+						if ($methodParameter->getNativeType()->isSuperTypeOf($remainingPrototypeParameter->getNativeType())->yes()) {
+							continue;
+						}
+
+						$error = RuleErrorBuilder::message(sprintf(
+							'Parameter #%d ...$%s (%s) of method %s::%s() is not contravariant with parameter #%d $%s (%s) of method %s::%s().',
+							$i + 1,
+							$methodParameter->getName(),
+							$methodParameter->getNativeType()->describe(VerbosityLevel::typeOnly()),
+							$method->getDeclaringClass()->getDisplayName(),
+							$method->getName(),
+							$i + $j + 1,
+							$remainingPrototypeParameter->getName(),
+							$remainingPrototypeParameter->getNativeType()->describe(VerbosityLevel::typeOnly()),
+							$prototypeDeclaringClass->getDisplayName(true),
+							$prototype->getName(),
+						))->identifier('method.childParameterType');
+
+						if (! $ignorable) {
+							$error->nonIgnorable();
+						}
+
+						$messages[] = $error->build();
+					}
+					break;
+				}
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s of method %s::%s() is variadic but parameter #%d $%s of method %s::%s() is not variadic.',
+					$i + 1,
+					$methodParameter->getName(),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))->identifier('parameter.variadic');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+
+				continue;
+			}
+
+			if ($prototypeParameter->isOptional() && !$methodParameter->isOptional()) {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s of method %s::%s() is required but parameter #%d $%s of method %s::%s() is optional.',
+					$i + 1,
+					$methodParameter->getName(),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))->identifier('parameter.notOptional');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+			}
+
+			$methodParameterType = $methodParameter->getNativeType();
+
+			$prototypeParameterType = $prototypeParameter->getNativeType();
+			if (!$this->phpVersion->supportsParameterTypeWidening()) {
+				if (!$methodParameterType->equals($prototypeParameterType)) {
+					$error = RuleErrorBuilder::message(sprintf(
+						'Parameter #%d $%s (%s) of method %s::%s() does not match parameter #%d $%s (%s) of method %s::%s().',
+						$i + 1,
+						$methodParameter->getName(),
+						$methodParameterType->describe(VerbosityLevel::typeOnly()),
+						$method->getDeclaringClass()->getDisplayName(),
+						$method->getName(),
+						$i + 1,
+						$prototypeParameter->getName(),
+						$prototypeParameterType->describe(VerbosityLevel::typeOnly()),
+						$prototypeDeclaringClass->getDisplayName(true),
+						$prototype->getName(),
+					))->identifier('method.childParameterType');
+
+					if (! $ignorable) {
+						$error->nonIgnorable();
+					}
+
+					$messages[] = $error->build();
+				}
+				continue;
+			}
+
+			if ($this->isParameterTypeCompatible($methodParameterType, $prototypeParameterType, $this->phpVersion->supportsParameterContravariance())) {
+				continue;
+			}
+
+			if ($this->phpVersion->supportsParameterContravariance()) {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s (%s) of method %s::%s() is not contravariant with parameter #%d $%s (%s) of method %s::%s().',
+					$i + 1,
+					$methodParameter->getName(),
+					$methodParameterType->describe(VerbosityLevel::typeOnly()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+					$prototypeParameterType->describe(VerbosityLevel::typeOnly()),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))->identifier('method.childParameterType');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+			} else {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s (%s) of method %s::%s() is not compatible with parameter #%d $%s (%s) of method %s::%s().',
+					$i + 1,
+					$methodParameter->getName(),
+					$methodParameterType->describe(VerbosityLevel::typeOnly()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$i + 1,
+					$prototypeParameter->getName(),
+					$prototypeParameterType->describe(VerbosityLevel::typeOnly()),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))->identifier('method.childParameterType');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+			}
+		}
+
+		if (!isset($i)) {
+			$i = -1;
+		}
+
+		foreach ($methodParameters as $j => $methodParameter) {
+			if ($j <= $i) {
+				continue;
+			}
+
+			if (
+				$j === count($methodParameters) - 1
+				&& $prototypeAfterVariadic
+				&& !$methodParameter->isVariadic()
+			) {
+				$error = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s of method %s::%s() is not variadic.',
+					$j + 1,
+					$methodParameter->getName(),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+				))->identifier('parameter.notVariadic');
+
+				if (! $ignorable) {
+					$error->nonIgnorable();
+				}
+
+				$messages[] = $error->build();
+
+				continue;
+			}
+
+			if ($methodParameter->isOptional()) {
+				continue;
+			}
+
+			$error = RuleErrorBuilder::message(sprintf(
+				'Parameter #%d $%s of method %s::%s() is not optional.',
+				$j + 1,
+				$methodParameter->getName(),
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('parameter.notOptional');
+
+			if (! $ignorable) {
+				$error->nonIgnorable();
+			}
+
+			$messages[] = $error->build();
+
+			continue;
+		}
+
+		return $messages;
+	}
+
+	public function isParameterTypeCompatible(Type $methodParameterType, Type $prototypeParameterType, bool $supportsContravariance): bool
+	{
+		return $this->isTypeCompatible($methodParameterType, $prototypeParameterType, $supportsContravariance, false);
+	}
+
+	public function isReturnTypeCompatible(Type $methodParameterType, Type $prototypeParameterType, bool $supportsCovariance): bool
+	{
+		return $this->isTypeCompatible($methodParameterType, $prototypeParameterType, $supportsCovariance, true);
+	}
+
+	private function isTypeCompatible(Type $methodParameterType, Type $prototypeParameterType, bool $supportsContravariance, bool $considerMixedExplicitness): bool
+	{
+		if ($methodParameterType instanceof MixedType) {
+			if ($considerMixedExplicitness && $prototypeParameterType instanceof MixedType) {
+				return !$methodParameterType->isExplicitMixed() || $prototypeParameterType->isExplicitMixed();
+			}
+
+			return true;
+		}
+
+		if (!$supportsContravariance) {
+			if (TypeCombinator::containsNull($methodParameterType)) {
+				$prototypeParameterType = TypeCombinator::removeNull($prototypeParameterType);
+			}
+			$methodParameterType = TypeCombinator::removeNull($methodParameterType);
+			if ($methodParameterType->equals($prototypeParameterType)) {
+				return true;
+			}
+
+			if ($methodParameterType instanceof IterableType) {
+				if ($prototypeParameterType instanceof ArrayType) {
+					return true;
+				}
+				if ($prototypeParameterType instanceof ConstantArrayType) {
+					return true;
+				}
+				if ($prototypeParameterType->isObject()->yes() && $prototypeParameterType->getObjectClassNames() === [Traversable::class]) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+
+		return $methodParameterType->isSuperTypeOf($prototypeParameterType)->yes();
+	}
+
+}
diff --git a/src/Rules/Methods/MethodSignatureRule.php b/src/Rules/Methods/MethodSignatureRule.php
new file mode 100644
index 00000000..2069abf7
--- /dev/null
+++ b/src/Rules/Methods/MethodSignatureRule.php
@@ -0,0 +1,292 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\Php\PhpClassReflectionExtension;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypehintHelper;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function min;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MethodSignatureRule implements Rule
+{
+
+	public function __construct(
+		private PhpClassReflectionExtension $phpClassReflectionExtension,
+		private bool $reportMaybes,
+		private bool $reportStatic,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$methodName = $method->getName();
+		if ($methodName === '__construct') {
+			return [];
+		}
+		if (!$this->reportStatic && $method->isStatic()) {
+			return [];
+		}
+		if ($method->isPrivate()) {
+			return [];
+		}
+		$errors = [];
+		$declaringClass = $method->getDeclaringClass();
+		foreach ($this->collectParentMethods($methodName, $method->getDeclaringClass()) as [$parentMethod, $parentMethodDeclaringClass]) {
+			$parentVariants = $parentMethod->getVariants();
+			if (count($parentVariants) !== 1) {
+				continue;
+			}
+			$parentVariant = $parentVariants[0];
+			[$returnTypeCompatibility, $returnType, $parentReturnType] = $this->checkReturnTypeCompatibility($declaringClass, $method, $parentVariant);
+			if ($returnTypeCompatibility->no() || (!$returnTypeCompatibility->yes() && $this->reportMaybes)) {
+				$builder = RuleErrorBuilder::message(sprintf(
+					'Return type (%s) of method %s::%s() should be %s with return type (%s) of method %s::%s()',
+					$returnType->describe(VerbosityLevel::value()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$returnTypeCompatibility->no() ? 'compatible' : 'covariant',
+					$parentReturnType->describe(VerbosityLevel::value()),
+					$parentMethodDeclaringClass->getDisplayName(),
+					$parentMethod->getName(),
+				))->identifier('method.childReturnType');
+				if (
+					$parentMethod->getDeclaringClass()->getName() === Rule::class
+					&& strtolower($methodName) === 'processnode'
+				) {
+					$ruleErrorType = new ObjectType(RuleError::class);
+					$identifierRuleErrorType = new ObjectType(IdentifierRuleError::class);
+					$listOfIdentifierRuleErrors = new IntersectionType([
+						new ArrayType(IntegerRangeType::fromInterval(0, null), $identifierRuleErrorType),
+						new AccessoryArrayListType(),
+					]);
+					if ($listOfIdentifierRuleErrors->isSuperTypeOf($parentReturnType)->yes()) {
+						$returnValueType = $returnType->getIterableValueType();
+						if (!$returnValueType->isString()->no()) {
+							$builder->tip('Rules can no longer return plain strings. See: https://phpstan.org/blog/using-rule-error-builder');
+						} elseif (
+							$ruleErrorType->isSuperTypeOf($returnValueType)->yes()
+							&& !$identifierRuleErrorType->isSuperTypeOf($returnValueType)->yes()
+						) {
+							$builder->tip('Errors are missing identifiers. See: https://phpstan.org/blog/using-rule-error-builder');
+						} elseif (!$returnType->isList()->yes()) {
+							$builder->tip('Return type must be a list. See: https://phpstan.org/blog/using-rule-error-builder');
+						}
+					}
+				}
+				$errors[] = $builder->build();
+			}
+
+			$parameterResults = $this->checkParameterTypeCompatibility($declaringClass, $method->getParameters(), $parentVariant->getParameters());
+			foreach ($parameterResults as $parameterIndex => [$parameterResult, $parameterType, $parentParameterType]) {
+				if ($parameterResult->yes()) {
+					continue;
+				}
+				if (!$parameterResult->no() && !$this->reportMaybes) {
+					continue;
+				}
+				$parameter = $method->getParameters()[$parameterIndex];
+				$parentParameter = $parentVariant->getParameters()[$parameterIndex];
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Parameter #%d $%s (%s) of method %s::%s() should be %s with parameter $%s (%s) of method %s::%s()',
+					$parameterIndex + 1,
+					$parameter->getName(),
+					$parameterType->describe(VerbosityLevel::value()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$parameterResult->no() ? 'compatible' : 'contravariant',
+					$parentParameter->getName(),
+					$parentParameterType->describe(VerbosityLevel::value()),
+					$parentMethodDeclaringClass->getDisplayName(),
+					$parentMethod->getName(),
+				))->identifier('method.childParameterType')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<array{ExtendedMethodReflection, ClassReflection}>
+	 */
+	private function collectParentMethods(string $methodName, ClassReflection $class): array
+	{
+		$parentMethods = [];
+
+		$parentClass = $class->getParentClass();
+		if ($parentClass !== null && $parentClass->hasNativeMethod($methodName)) {
+			$parentMethod = $parentClass->getNativeMethod($methodName);
+			if (!$parentMethod->isPrivate()) {
+				$parentMethods[] = [$parentMethod, $parentMethod->getDeclaringClass()];
+			}
+		}
+
+		foreach ($class->getInterfaces() as $interface) {
+			if (!$interface->hasNativeMethod($methodName)) {
+				continue;
+			}
+
+			$method = $interface->getNativeMethod($methodName);
+			$parentMethods[] = [$method, $method->getDeclaringClass()];
+		}
+
+		foreach ($class->getTraits(true) as $trait) {
+			$nativeTraitReflection = $trait->getNativeReflection();
+			if (!$nativeTraitReflection->hasMethod($methodName)) {
+				continue;
+			}
+
+			$methodReflection = $nativeTraitReflection->getMethod($methodName);
+			$isAbstract = $methodReflection->isAbstract();
+			if (!$isAbstract) {
+				continue;
+			}
+
+			$declaringTrait = $trait->getNativeMethod($methodName)->getDeclaringClass();
+			$parentMethods[] = [
+				$this->phpClassReflectionExtension->createUserlandMethodReflection(
+					$trait,
+					$class,
+					$methodReflection,
+					$declaringTrait->getName(),
+				),
+				$declaringTrait,
+			];
+		}
+
+		return $parentMethods;
+	}
+
+	/**
+	 * @return array{TrinaryLogic, Type, Type}
+	 */
+	private function checkReturnTypeCompatibility(
+		ClassReflection $declaringClass,
+		ExtendedParametersAcceptor $currentVariant,
+		ExtendedParametersAcceptor $parentVariant,
+	): array
+	{
+		$returnType = TypehintHelper::decideType(
+			$currentVariant->getNativeReturnType(),
+			TemplateTypeHelper::resolveToBounds($currentVariant->getPhpDocReturnType()),
+		);
+		$originalParentReturnType = TypehintHelper::decideType(
+			$parentVariant->getNativeReturnType(),
+			TemplateTypeHelper::resolveToBounds($parentVariant->getPhpDocReturnType()),
+		);
+		$parentReturnType = $this->transformStaticType($declaringClass, $originalParentReturnType);
+		// Allow adding `void` return type hints when the parent defines no return type
+		if ($returnType->isVoid()->yes() && $parentReturnType instanceof MixedType) {
+			return [TrinaryLogic::createYes(), $returnType, $parentReturnType];
+		}
+
+		// We can return anything
+		if ($parentReturnType->isVoid()->yes()) {
+			return [TrinaryLogic::createYes(), $returnType, $parentReturnType];
+		}
+
+		return [$parentReturnType->isSuperTypeOf($returnType)->result, TypehintHelper::decideType(
+			$currentVariant->getNativeReturnType(),
+			$currentVariant->getPhpDocReturnType(),
+		), $originalParentReturnType];
+	}
+
+	/**
+	 * @param ExtendedParameterReflection[] $parameters
+	 * @param ExtendedParameterReflection[] $parentParameters
+	 * @return array<int, array{TrinaryLogic, Type, Type}>
+	 */
+	private function checkParameterTypeCompatibility(
+		ClassReflection $declaringClass,
+		array $parameters,
+		array $parentParameters,
+	): array
+	{
+		$parameterResults = [];
+
+		$numberOfParameters = min(count($parameters), count($parentParameters));
+		for ($i = 0; $i < $numberOfParameters; $i++) {
+			$parameter = $parameters[$i];
+			$parentParameter = $parentParameters[$i];
+
+			$parameterType = TypehintHelper::decideType(
+				$parameter->getNativeType(),
+				TemplateTypeHelper::resolveToBounds($parameter->getPhpDocType()),
+			);
+			$originalParameterType = TypehintHelper::decideType(
+				$parentParameter->getNativeType(),
+				TemplateTypeHelper::resolveToBounds($parentParameter->getPhpDocType()),
+			);
+			$parentParameterType = $this->transformStaticType($declaringClass, $originalParameterType);
+
+			$parameterResults[] = [$parameterType->isSuperTypeOf($parentParameterType)->result, TypehintHelper::decideType(
+				$parameter->getNativeType(),
+				$parameter->getPhpDocType(),
+			), $originalParameterType];
+		}
+
+		return $parameterResults;
+	}
+
+	private function transformStaticType(ClassReflection $declaringClass, Type $type): Type
+	{
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($declaringClass): Type {
+			if ($type instanceof GenericStaticType) {
+				if ($declaringClass->isFinal()) {
+					$changedType = $type->changeBaseClass($declaringClass)->getStaticObjectType();
+				} else {
+					$changedType = $type->changeBaseClass($declaringClass);
+				}
+				return $traverse($changedType);
+			}
+
+			if ($type instanceof StaticType) {
+				if ($declaringClass->isFinal()) {
+					$changedType = new ObjectType($declaringClass->getName());
+				} else {
+					$changedType = $type->changeBaseClass($declaringClass);
+				}
+				return $traverse($changedType);
+			}
+
+			return $traverse($type);
+		});
+	}
+
+}
diff --git a/src/Rules/Methods/MethodVisibilityComparisonHelper.php b/src/Rules/Methods/MethodVisibilityComparisonHelper.php
new file mode 100644
index 00000000..89cc2f01
--- /dev/null
+++ b/src/Rules/Methods/MethodVisibilityComparisonHelper.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+final class MethodVisibilityComparisonHelper
+{
+
+	/** @return list<IdentifierRuleError> */
+	public function compare(ExtendedMethodReflection $prototype, ClassReflection $prototypeDeclaringClass, PhpMethodFromParserNodeReflection $method): array
+	{
+		/** @var list<IdentifierRuleError> $messages */
+		$messages = [];
+
+		if ($prototype->isPublic()) {
+			if (!$method->isPublic()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s method %s::%s() overriding public method %s::%s() should also be public.',
+					$method->isPrivate() ? 'Private' : 'Protected',
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))
+					->nonIgnorable()
+					->identifier('method.visibility')
+					->build();
+			}
+		} elseif ($method->isPrivate()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Private method %s::%s() overriding protected method %s::%s() should be protected or public.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$prototypeDeclaringClass->getDisplayName(true),
+				$prototype->getName(),
+			))
+				->nonIgnorable()
+				->identifier('method.visibility')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/MethodVisibilityInInterfaceRule.php b/src/Rules/Methods/MethodVisibilityInInterfaceRule.php
new file mode 100644
index 00000000..11ca68a0
--- /dev/null
+++ b/src/Rules/Methods/MethodVisibilityInInterfaceRule.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/** @implements Rule<InClassMethodNode> */
+final class MethodVisibilityInInterfaceRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+
+		if ($method->isPublic()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		if ($classReflection === null) {
+			return [];
+		}
+
+		if (!$classReflection->isInterface()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() cannot use non-public visibility in interface.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+			))->identifier('method.visibility')->nonIgnorable()->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/MissingMagicSerializationMethodsRule.php b/src/Rules/Methods/MissingMagicSerializationMethodsRule.php
new file mode 100644
index 00000000..70dc8d75
--- /dev/null
+++ b/src/Rules/Methods/MissingMagicSerializationMethodsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\Node\InClassNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use Serializable;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class MissingMagicSerializationMethodsRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpversion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if (!$this->phpversion->serializableRequiresMagicMethods()) {
+			return [];
+		}
+		if (!$classReflection->implementsInterface(Serializable::class)) {
+			return [];
+		}
+		if ($classReflection->isAbstract() || $classReflection->isInterface() || $classReflection->isEnum()) {
+			return [];
+		}
+
+		$messages = [];
+
+		try {
+			$nativeMethods = $classReflection->getNativeReflection()->getMethods();
+		} catch (IdentifierNotFound) {
+			return [];
+		}
+
+		$missingMagicSerialize = true;
+		$missingMagicUnserialize = true;
+		foreach ($nativeMethods as $method) {
+			if (strtolower($method->getName()) === '__serialize') {
+				$missingMagicSerialize = false;
+			}
+			if (strtolower($method->getName()) !== '__unserialize') {
+				continue;
+			}
+
+			$missingMagicUnserialize = false;
+		}
+
+		if ($missingMagicSerialize) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Non-abstract class %s implements the Serializable interface, but does not implement __serialize().',
+				$classReflection->getDisplayName(),
+			))
+				->tip('See https://wiki.php.net/rfc/phase_out_serializable')
+				->identifier('class.serializable')
+				->build();
+		}
+		if ($missingMagicUnserialize) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Non-abstract class %s implements the Serializable interface, but does not implement __unserialize().',
+				$classReflection->getDisplayName(),
+			))
+				->tip('See https://wiki.php.net/rfc/phase_out_serializable')
+				->identifier('class.serializable')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/MissingMethodImplementationRule.php b/src/Rules/Methods/MissingMethodImplementationRule.php
new file mode 100644
index 00000000..26102c16
--- /dev/null
+++ b/src/Rules/Methods/MissingMethodImplementationRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflector\Exception\IdentifierNotFound;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class MissingMethodImplementationRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		if ($classReflection->isInterface()) {
+			return [];
+		}
+		if ($classReflection->isAbstract()) {
+			return [];
+		}
+
+		$messages = [];
+
+		try {
+			$nativeMethods = $classReflection->getNativeReflection()->getMethods();
+		} catch (IdentifierNotFound) {
+			return [];
+		}
+		foreach ($nativeMethods as $method) {
+			if (!$method->isAbstract()) {
+				continue;
+			}
+
+			$declaringClass = $method->getDeclaringClass();
+
+			$classLikeDescription = 'Non-abstract class';
+			if ($classReflection->isEnum()) {
+				$classLikeDescription = 'Enum';
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'%s %s contains abstract method %s() from %s %s.',
+				$classLikeDescription,
+				$classReflection->getDisplayName(),
+				$method->getName(),
+				$declaringClass->isInterface() ? 'interface' : 'class',
+				$declaringClass->getName(),
+			))->nonIgnorable()->identifier('method.abstract')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/MissingMethodParameterTypehintRule.php b/src/Rules/Methods/MissingMethodParameterTypehintRule.php
new file mode 100644
index 00000000..af5b65fa
--- /dev/null
+++ b/src/Rules/Methods/MissingMethodParameterTypehintRule.php
@@ -0,0 +1,121 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MissingMethodParameterTypehintRule implements Rule
+{
+
+	public function __construct(
+		private MissingTypehintCheck $missingTypehintCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methodReflection = $node->getMethodReflection();
+		$messages = [];
+
+		foreach ($methodReflection->getParameters() as $parameterReflection) {
+			foreach ($this->checkMethodParameter($methodReflection, sprintf('parameter $%s', $parameterReflection->getName()), $parameterReflection->getType()) as $parameterMessage) {
+				$messages[] = $parameterMessage;
+			}
+
+			if ($parameterReflection->getClosureThisType() !== null) {
+				foreach ($this->checkMethodParameter($methodReflection, sprintf('@param-closure-this PHPDoc tag for parameter $%s', $parameterReflection->getName()), $parameterReflection->getClosureThisType()) as $parameterMessage) {
+					$messages[] = $parameterMessage;
+				}
+			}
+
+			if ($parameterReflection->getOutType() === null) {
+				continue;
+			}
+
+			foreach ($this->checkMethodParameter($methodReflection, sprintf('@param-out PHPDoc tag for parameter $%s', $parameterReflection->getName()), $parameterReflection->getOutType()) as $parameterMessage) {
+				$messages[] = $parameterMessage;
+			}
+		}
+
+		return $messages;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkMethodParameter(MethodReflection $methodReflection, string $parameterMessage, Type $parameterType): array
+	{
+		if ($parameterType instanceof MixedType && !$parameterType->isExplicitMixed()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Method %s::%s() has %s with no type specified.',
+					$methodReflection->getDeclaringClass()->getDisplayName(),
+					$methodReflection->getName(),
+					$parameterMessage,
+				))->identifier('missingType.parameter')->build(),
+			];
+		}
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($parameterType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with no value type specified in iterable type %s.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$parameterMessage,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($parameterType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with generic %s but does not specify its types: %s',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$parameterMessage,
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($parameterType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with no signature specified for %s.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$parameterMessage,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/MissingMethodReturnTypehintRule.php b/src/Rules/Methods/MissingMethodReturnTypehintRule.php
new file mode 100644
index 00000000..99648995
--- /dev/null
+++ b/src/Rules/Methods/MissingMethodReturnTypehintRule.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MissingMethodReturnTypehintRule implements Rule
+{
+
+	public function __construct(private MissingTypehintCheck $missingTypehintCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methodReflection = $node->getMethodReflection();
+		if ($scope->isInTrait()) {
+			$methodNode = $node->getOriginalNode();
+			$originalMethodName = $methodNode->getAttribute('originalTraitMethodName');
+			if ($originalMethodName === '__construct') {
+				return [];
+			}
+		}
+		$returnType = $methodReflection->getReturnType();
+
+		if ($returnType instanceof MixedType && !$returnType->isExplicitMixed()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Method %s::%s() has no return type specified.',
+					$methodReflection->getDeclaringClass()->getDisplayName(),
+					$methodReflection->getName(),
+				))->identifier('missingType.return')->build(),
+			];
+		}
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($returnType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() return type has no value type specified in iterable type %s.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($returnType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() return type with generic %s does not specify its types: %s',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($returnType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() return type has no signature specified for %s.',
+				$methodReflection->getDeclaringClass()->getDisplayName(),
+				$methodReflection->getName(),
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/MissingMethodSelfOutTypeRule.php b/src/Rules/Methods/MissingMethodSelfOutTypeRule.php
new file mode 100644
index 00000000..a6c19e19
--- /dev/null
+++ b/src/Rules/Methods/MissingMethodSelfOutTypeRule.php
@@ -0,0 +1,85 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MissingMethodSelfOutTypeRule implements Rule
+{
+
+	public function __construct(
+		private MissingTypehintCheck $missingTypehintCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$methodReflection = $node->getMethodReflection();
+		$selfOutType = $methodReflection->getSelfOutType();
+
+		if ($selfOutType === null) {
+			return [];
+		}
+
+		$classReflection = $methodReflection->getDeclaringClass();
+		$phpDocTagMessage = 'PHPDoc tag @phpstan-self-out';
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($selfOutType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with no value type specified in iterable type %s.',
+				$classReflection->getDisplayName(),
+				$methodReflection->getName(),
+				$phpDocTagMessage,
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($selfOutType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with generic %s but does not specify its types: %s',
+				$classReflection->getDisplayName(),
+				$methodReflection->getName(),
+				$phpDocTagMessage,
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($selfOutType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() has %s with no signature specified for %s.',
+				$classReflection->getDisplayName(),
+				$methodReflection->getName(),
+				$phpDocTagMessage,
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Methods/NullsafeMethodCallRule.php b/src/Rules/Methods/NullsafeMethodCallRule.php
new file mode 100644
index 00000000..b2280840
--- /dev/null
+++ b/src/Rules/Methods/NullsafeMethodCallRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\NullsafeMethodCall>
+ */
+final class NullsafeMethodCallRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\NullsafeMethodCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$calledOnType = $scope->getType($node->var);
+		if (!$calledOnType->isNull()->no()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Using nullsafe method call on non-nullable type %s. Use -> instead.', $calledOnType->describe(VerbosityLevel::typeOnly())))
+				->identifier('nullsafe.neverNull')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Methods/OverridingMethodRule.php b/src/Rules/Methods/OverridingMethodRule.php
new file mode 100644
index 00000000..b428a99a
--- /dev/null
+++ b/src/Rules/Methods/OverridingMethodRule.php
@@ -0,0 +1,393 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedFunctionVariant;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodPrototypeReflection;
+use PHPStan\Reflection\Native\NativeMethodReflection;
+use PHPStan\Reflection\Php\PhpClassReflectionExtension;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function count;
+use function is_bool;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class OverridingMethodRule implements Rule
+{
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private MethodSignatureRule $methodSignatureRule,
+		private bool $checkPhpDocMethodSignatures,
+		private MethodParameterComparisonHelper $methodParameterComparisonHelper,
+		private MethodVisibilityComparisonHelper $methodVisibilityComparisonHelper,
+		private PhpClassReflectionExtension $phpClassReflectionExtension,
+		private bool $checkMissingOverrideMethodAttribute,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$prototypeData = $this->findPrototype($node->getClassReflection(), $method->getName());
+		if ($prototypeData === null) {
+			if (strtolower($method->getName()) === '__construct') {
+				$parent = $method->getDeclaringClass()->getParentClass();
+				if ($parent !== null && $parent->hasConstructor()) {
+					$parentConstructor = $parent->getConstructor();
+					if ($parentConstructor->isFinalByKeyword()->yes()) {
+						return $this->addErrors([
+							RuleErrorBuilder::message(sprintf(
+								'Method %s::%s() overrides final method %s::%s().',
+								$method->getDeclaringClass()->getDisplayName(),
+								$method->getName(),
+								$parent->getDisplayName(true),
+								$parentConstructor->getName(),
+							))
+								->nonIgnorable()
+								->identifier('method.parentMethodFinal')
+								->build(),
+						], $node, $scope);
+					}
+					if ($parentConstructor->isFinal()->yes()) {
+						return $this->addErrors([
+							RuleErrorBuilder::message(sprintf(
+								'Method %s::%s() overrides @final method %s::%s().',
+								$method->getDeclaringClass()->getDisplayName(),
+								$method->getName(),
+								$parent->getDisplayName(true),
+								$parentConstructor->getName(),
+							))->identifier('method.parentMethodFinalByPhpDoc')
+								->build(),
+						], $node, $scope);
+					}
+				}
+			}
+
+			if ($this->phpVersion->supportsOverrideAttribute() && $this->hasOverrideAttribute($node->getOriginalNode())) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Method %s::%s() has #[\Override] attribute but does not override any method.',
+						$method->getDeclaringClass()->getDisplayName(),
+						$method->getName(),
+					))
+						->nonIgnorable()
+						->identifier('method.override')
+						->build(),
+				];
+			}
+
+			return [];
+		}
+
+		[$prototype, $prototypeDeclaringClass, $checkVisibility] = $prototypeData;
+
+		$messages = [];
+		if (
+			$this->phpVersion->supportsOverrideAttribute()
+			&& $this->checkMissingOverrideMethodAttribute
+			&& !$this->hasOverrideAttribute($node->getOriginalNode())
+		) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() overrides method %s::%s() but is missing the #[\Override] attribute.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$prototypeDeclaringClass->getDisplayName(true),
+				$prototype->getName(),
+			))->identifier('method.missingOverride')->build();
+		}
+		if ($prototype->isFinalByKeyword()->yes()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() overrides final method %s::%s().',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$prototypeDeclaringClass->getDisplayName(true),
+				$prototype->getName(),
+			))
+				->nonIgnorable()
+				->identifier('method.parentMethodFinal')
+				->build();
+		} elseif ($prototype->isFinal()->yes()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() overrides @final method %s::%s().',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$prototypeDeclaringClass->getDisplayName(true),
+				$prototype->getName(),
+			))->identifier('method.parentMethodFinalByPhpDoc')
+				->build();
+		}
+
+		if ($prototype->isStatic()) {
+			if (!$method->isStatic()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'Non-static method %s::%s() overrides static method %s::%s().',
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))
+					->nonIgnorable()
+					->identifier('method.nonStatic')
+					->build();
+			}
+		} elseif ($method->isStatic()) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Static method %s::%s() overrides non-static method %s::%s().',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$prototypeDeclaringClass->getDisplayName(true),
+				$prototype->getName(),
+			))
+				->nonIgnorable()
+				->identifier('method.static')
+				->build();
+		}
+
+		if ($checkVisibility) {
+			$messages = array_merge($messages, $this->methodVisibilityComparisonHelper->compare($prototype, $prototypeDeclaringClass, $method));
+		}
+
+		$prototypeVariants = $prototype->getVariants();
+		if (count($prototypeVariants) !== 1) {
+			return $this->addErrors($messages, $node, $scope);
+		}
+
+		$prototypeVariant = $prototypeVariants[0];
+
+		$methodReturnType = $method->getNativeReturnType();
+
+		$realPrototype = $method->getPrototype();
+
+		if (
+			$realPrototype instanceof MethodPrototypeReflection
+			&& $this->phpVersion->hasTentativeReturnTypes()
+			&& $realPrototype->getTentativeReturnType() !== null
+			&& !$this->hasReturnTypeWillChangeAttribute($node->getOriginalNode())
+			&& count($prototypeDeclaringClass->getNativeReflection()->getMethod($prototype->getName())->getAttributes('ReturnTypeWillChange')) === 0
+		) {
+			if (!$this->methodParameterComparisonHelper->isReturnTypeCompatible($realPrototype->getTentativeReturnType(), $method->getNativeReturnType(), true)) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'Return type %s of method %s::%s() is not covariant with tentative return type %s of method %s::%s().',
+					$methodReturnType->describe(VerbosityLevel::typeOnly()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$realPrototype->getTentativeReturnType()->describe(VerbosityLevel::typeOnly()),
+					$realPrototype->getDeclaringClass()->getDisplayName(true),
+					$realPrototype->getName(),
+				))
+					->tip('Make it covariant, or use the #[\ReturnTypeWillChange] attribute to temporarily suppress the error.')
+					->nonIgnorable()
+					->identifier('method.tentativeReturnType')
+					->build();
+			}
+		}
+
+		$messages = array_merge($messages, $this->methodParameterComparisonHelper->compare($prototype, $prototypeDeclaringClass, $method, false));
+
+		if (!$prototypeVariant instanceof ExtendedFunctionVariant) {
+			return $this->addErrors($messages, $node, $scope);
+		}
+
+		$prototypeReturnType = $prototypeVariant->getNativeReturnType();
+		$reportReturnType = true;
+		if ($this->phpVersion->hasTentativeReturnTypes()) {
+			$reportReturnType = !$realPrototype instanceof MethodPrototypeReflection || $realPrototype->getTentativeReturnType() === null || $prototype->isInternal()->no();
+		} else {
+			if ($realPrototype instanceof MethodPrototypeReflection && $realPrototype->isInternal()) {
+				if ($prototype->isInternal()->yes() && $prototypeDeclaringClass->getName() !== $realPrototype->getDeclaringClass()->getName()) {
+					$realPrototypeVariant = $realPrototype->getVariants()[0];
+					if (
+						$prototypeReturnType instanceof MixedType
+						&& !$prototypeReturnType->isExplicitMixed()
+						&& (!$realPrototypeVariant->getReturnType() instanceof MixedType || $realPrototypeVariant->getReturnType()->isExplicitMixed())
+					) {
+						$reportReturnType = false;
+					}
+				}
+
+				if ($reportReturnType && $prototype->isInternal()->yes()) {
+					$reportReturnType = !$this->hasReturnTypeWillChangeAttribute($node->getOriginalNode());
+				}
+			}
+		}
+
+		if (
+			$reportReturnType
+			&& !$this->methodParameterComparisonHelper->isReturnTypeCompatible($prototypeReturnType, $methodReturnType, $this->phpVersion->supportsReturnCovariance())
+		) {
+			if ($this->phpVersion->supportsReturnCovariance()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'Return type %s of method %s::%s() is not covariant with return type %s of method %s::%s().',
+					$methodReturnType->describe(VerbosityLevel::typeOnly()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$prototypeReturnType->describe(VerbosityLevel::typeOnly()),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))
+					->nonIgnorable()
+					->identifier('method.childReturnType')
+					->build();
+			} else {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'Return type %s of method %s::%s() is not compatible with return type %s of method %s::%s().',
+					$methodReturnType->describe(VerbosityLevel::typeOnly()),
+					$method->getDeclaringClass()->getDisplayName(),
+					$method->getName(),
+					$prototypeReturnType->describe(VerbosityLevel::typeOnly()),
+					$prototypeDeclaringClass->getDisplayName(true),
+					$prototype->getName(),
+				))
+					->nonIgnorable()
+					->identifier('method.childReturnType')
+					->build();
+			}
+		}
+
+		return $this->addErrors($messages, $node, $scope);
+	}
+
+	/**
+	 * @param list<IdentifierRuleError> $errors
+	 * @return list<IdentifierRuleError>
+	 */
+	private function addErrors(
+		array $errors,
+		InClassMethodNode $classMethod,
+		Scope $scope,
+	): array
+	{
+		if (count($errors) > 0) {
+			return $errors;
+		}
+
+		if (!$this->checkPhpDocMethodSignatures) {
+			return $errors;
+		}
+
+		return $this->methodSignatureRule->processNode($classMethod, $scope);
+	}
+
+	private function hasReturnTypeWillChangeAttribute(Node\Stmt\ClassMethod $method): bool
+	{
+		foreach ($method->attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				if ($attr->name->toLowerString() === 'returntypewillchange') {
+					return true;
+				}
+			}
+		}
+
+		return false;
+	}
+
+	private function hasOverrideAttribute(Node\Stmt\ClassMethod $method): bool
+	{
+		foreach ($method->attrGroups as $attrGroup) {
+			foreach ($attrGroup->attrs as $attr) {
+				if ($attr->name->toLowerString() === 'override') {
+					return true;
+				}
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * @return array{ExtendedMethodReflection, ClassReflection, bool}|null
+	 */
+	private function findPrototype(ClassReflection $classReflection, string $methodName): ?array
+	{
+		foreach ($classReflection->getImmediateInterfaces() as $immediateInterface) {
+			if ($immediateInterface->hasNativeMethod($methodName)) {
+				$method = $immediateInterface->getNativeMethod($methodName);
+				return [$method, $method->getDeclaringClass(), true];
+			}
+		}
+
+		if ($this->phpVersion->supportsAbstractTraitMethods()) {
+			foreach ($classReflection->getTraits(true) as $trait) {
+				$nativeTraitReflection = $trait->getNativeReflection();
+				if (!$nativeTraitReflection->hasMethod($methodName)) {
+					continue;
+				}
+
+				$methodReflection = $nativeTraitReflection->getMethod($methodName);
+				$isAbstract = $methodReflection->isAbstract();
+				if ($isAbstract) {
+					$declaringTrait = $trait->getNativeMethod($methodName)->getDeclaringClass();
+					return [
+						$this->phpClassReflectionExtension->createUserlandMethodReflection(
+							$trait,
+							$classReflection,
+							$methodReflection,
+							$declaringTrait->getName(),
+						),
+						$declaringTrait,
+						false,
+					];
+				}
+			}
+		}
+
+		$parentClass = $classReflection->getParentClass();
+		if ($parentClass === null) {
+			return null;
+		}
+
+		if (!$parentClass->hasNativeMethod($methodName)) {
+			return null;
+		}
+
+		$method = $parentClass->getNativeMethod($methodName);
+		if ($method->isPrivate()) {
+			return null;
+		}
+
+		$declaringClass = $method->getDeclaringClass();
+		if ($declaringClass->hasConstructor()) {
+			if ($method->getName() === $declaringClass->getConstructor()->getName()) {
+				$prototype = $method->getPrototype();
+				if ($prototype instanceof PhpMethodReflection || $prototype instanceof MethodPrototypeReflection || $prototype instanceof NativeMethodReflection) {
+					$abstract = $prototype->isAbstract();
+					if (is_bool($abstract)) {
+						if (!$abstract) {
+							return null;
+						}
+					} elseif (!$abstract->yes()) {
+						return null;
+					}
+				}
+			} elseif (strtolower($methodName) === '__construct') {
+				return null;
+			}
+		}
+
+		return [$method, $method->getDeclaringClass(), true];
+	}
+
+}
diff --git a/src/Rules/Methods/ReturnTypeRule.php b/src/Rules/Methods/ReturnTypeRule.php
new file mode 100644
index 00000000..edaf19dd
--- /dev/null
+++ b/src/Rules/Methods/ReturnTypeRule.php
@@ -0,0 +1,131 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Return_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\FunctionReturnTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\TipRuleError;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\ObjectType;
+use function count;
+use function sprintf;
+use function strtolower;
+use function ucfirst;
+
+/**
+ * @implements Rule<Node\Stmt\Return_>
+ */
+final class ReturnTypeRule implements Rule
+{
+
+	public function __construct(private FunctionReturnTypeCheck $returnTypeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Return_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->getFunction() === null) {
+			return [];
+		}
+
+		if ($scope->isInAnonymousFunction()) {
+			return [];
+		}
+
+		$method = $scope->getFunction();
+		if (!$method instanceof PhpMethodFromParserNodeReflection) {
+			return [];
+		}
+
+		if ($method->isPropertyHook()) {
+			$methodDescription = sprintf(
+				'%s hook for property %s::$%s',
+				ucfirst($method->getPropertyHookName()),
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getHookedPropertyName(),
+			);
+		} else {
+			$methodDescription = sprintf('Method %s::%s()', $method->getDeclaringClass()->getDisplayName(), $method->getName());
+		}
+
+		$returnType = $method->getReturnType();
+		$errors = $this->returnTypeCheck->checkReturnType(
+			$scope,
+			$returnType,
+			$node->expr,
+			$node,
+			sprintf(
+				'%s should return %%s but empty return statement found.',
+				$methodDescription,
+			),
+			sprintf(
+				'%s with return type void returns %%s but should not return anything.',
+				$methodDescription,
+			),
+			sprintf(
+				'%s should return %%s but returns %%s.',
+				$methodDescription,
+			),
+			sprintf(
+				'%s should never return but return statement found.',
+				$methodDescription,
+			),
+			$method->isGenerator(),
+		);
+
+		if (
+			count($errors) === 1
+			&& $errors[0]->getIdentifier() === 'return.type'
+			&& !$errors[0] instanceof TipRuleError
+			&& $errors[0] instanceof LineRuleError
+			&& $method->getDeclaringClass()->isSubclassOf(Rule::class)
+			&& strtolower($method->getName()) === 'processnode'
+			&& $node->expr !== null
+		) {
+			$ruleErrorType = new ObjectType(RuleError::class);
+			$identifierRuleErrorType = new ObjectType(IdentifierRuleError::class);
+			$listOfIdentifierRuleErrors = new IntersectionType([
+				new ArrayType(IntegerRangeType::fromInterval(0, null), $identifierRuleErrorType),
+				new AccessoryArrayListType(),
+			]);
+			if (!$listOfIdentifierRuleErrors->isSuperTypeOf($returnType)->yes()) {
+				return $errors;
+			}
+
+			$returnValueType = $scope->getType($node->expr)->getIterableValueType();
+			$builder = RuleErrorBuilder::message($errors[0]->getMessage())
+				->line($errors[0]->getLine())
+				->identifier($errors[0]->getIdentifier());
+			if (!$returnValueType->isString()->no()) {
+				$builder->tip('Rules can no longer return plain strings. See: https://phpstan.org/blog/using-rule-error-builder');
+			} elseif (
+				$ruleErrorType->isSuperTypeOf($returnValueType)->yes()
+				&& !$identifierRuleErrorType->isSuperTypeOf($returnValueType)->yes()
+			) {
+				$builder->tip('Error is missing an identifier. See: https://phpstan.org/blog/using-rule-error-builder');
+			}
+
+			$errors = [$builder->build()];
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Methods/StaticMethodCallCheck.php b/src/Rules/Methods/StaticMethodCallCheck.php
new file mode 100644
index 00000000..481158a4
--- /dev/null
+++ b/src/Rules/Methods/StaticMethodCallCheck.php
@@ -0,0 +1,302 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use DOMDocument;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\Native\NativeMethodReflection;
+use PHPStan\Reflection\Php\PhpMethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+final class StaticMethodCallCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+		private ClassNameCheck $classCheck,
+		private bool $checkFunctionNameCase,
+		private bool $reportMagicMethods,
+	)
+	{
+	}
+
+	/**
+	 * @param Name|Expr $class
+	 * @return array{list<IdentifierRuleError>, ExtendedMethodReflection|null}
+	 */
+	public function check(
+		Scope $scope,
+		string $methodName,
+		$class,
+	): array
+	{
+		$errors = [];
+		$isAbstract = false;
+		if ($class instanceof Name) {
+			$classStringType = $scope->getType(new Expr\ClassConstFetch($class, 'class'));
+			if ($classStringType->hasMethod($methodName)->yes()) {
+				return [[], null];
+			}
+
+			$className = (string) $class;
+			$lowercasedClassName = strtolower($className);
+			if (in_array($lowercasedClassName, ['self', 'static'], true)) {
+				if (!$scope->isInClass()) {
+					return [
+						[
+							RuleErrorBuilder::message(sprintf(
+								'Calling %s::%s() outside of class scope.',
+								$className,
+								$methodName,
+							))->identifier(sprintf('outOfClass.%s', $lowercasedClassName))->build(),
+						],
+						null,
+					];
+				}
+				$classType = $scope->resolveTypeByName($class);
+			} elseif ($lowercasedClassName === 'parent') {
+				if (!$scope->isInClass()) {
+					return [
+						[
+							RuleErrorBuilder::message(sprintf(
+								'Calling %s::%s() outside of class scope.',
+								$className,
+								$methodName,
+							))->identifier(sprintf('outOfClass.parent'))->build(),
+						],
+						null,
+					];
+				}
+				$currentClassReflection = $scope->getClassReflection();
+				if ($currentClassReflection->getParentClass() === null) {
+					return [
+						[
+							RuleErrorBuilder::message(sprintf(
+								'%s::%s() calls parent::%s() but %s does not extend any class.',
+								$scope->getClassReflection()->getDisplayName(),
+								$scope->getFunctionName(),
+								$methodName,
+								$scope->getClassReflection()->getDisplayName(),
+							))->identifier('class.noParent')->build(),
+						],
+						null,
+					];
+				}
+
+				if ($scope->getFunctionName() === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				$classType = $scope->resolveTypeByName($class);
+			} else {
+				if (!$this->reflectionProvider->hasClass($className)) {
+					if ($scope->isInClassExists($className)) {
+						return [[], null];
+					}
+
+					return [
+						[
+							RuleErrorBuilder::message(sprintf(
+								'Call to static method %s() on an unknown class %s.',
+								$methodName,
+								$className,
+							))->identifier('class.notFound')->discoveringSymbolsTip()->build(),
+						],
+						null,
+					];
+				}
+
+				$errors = $this->classCheck->checkClassNames([new ClassNameNodePair($className, $class)]);
+
+				$classType = $scope->resolveTypeByName($class);
+			}
+
+			$classReflection = $classType->getClassReflection();
+			if ($classReflection !== null && $classReflection->hasNativeMethod($methodName) && $lowercasedClassName !== 'static') {
+				$nativeMethodReflection = $classReflection->getNativeMethod($methodName);
+				if ($nativeMethodReflection instanceof PhpMethodReflection || $nativeMethodReflection instanceof NativeMethodReflection) {
+					$isAbstract = $nativeMethodReflection->isAbstract();
+					if ($isAbstract instanceof TrinaryLogic) {
+						$isAbstract = $isAbstract->yes();
+					}
+				}
+			}
+		} else {
+			$classTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $class),
+				sprintf('Call to static method %s() on an unknown class %%s.', SprintfHelper::escapeFormatString($methodName)),
+				static fn (Type $type): bool => $type->canCallMethods()->yes() && $type->hasMethod($methodName)->yes(),
+			);
+			$classType = $classTypeResult->getType();
+			if ($classType instanceof ErrorType) {
+				return [$classTypeResult->getUnknownClassErrors(), null];
+			}
+		}
+
+		if ($classType instanceof GenericClassStringType) {
+			$classType = $classType->getGenericType();
+			if (!$classType->isObject()->yes()) {
+				return [[], null];
+			}
+		} elseif ($classType->isString()->yes()) {
+			return [[], null];
+		}
+
+		$typeForDescribe = $classType;
+		if ($classType instanceof StaticType) {
+			$typeForDescribe = $classType->getStaticObjectType();
+		}
+		$classType = TypeCombinator::remove($classType, new StringType());
+
+		if (!$classType->canCallMethods()->yes()) {
+			return [
+				array_merge($errors, [
+					RuleErrorBuilder::message(sprintf(
+						'Cannot call static method %s() on %s.',
+						$methodName,
+						$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+					))->identifier('staticMethod.nonObject')->build(),
+				]),
+				null,
+			];
+		}
+
+		if (!$classType->hasMethod($methodName)->yes()) {
+			if (!$this->reportMagicMethods) {
+				foreach ($classType->getObjectClassNames() as $className) {
+					if (!$this->reflectionProvider->hasClass($className)) {
+						continue;
+					}
+
+					$classReflection = $this->reflectionProvider->getClass($className);
+					if ($classReflection->hasNativeMethod('__callStatic')) {
+						return [[], null];
+					}
+				}
+			}
+
+			return [
+				array_merge($errors, [
+					RuleErrorBuilder::message(sprintf(
+						'Call to an undefined static method %s::%s().',
+						$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+						$methodName,
+					))->identifier('staticMethod.notFound')->build(),
+				]),
+				null,
+			];
+		}
+
+		$method = $classType->getMethod($methodName, $scope);
+		if (!$method->isStatic()) {
+			$function = $scope->getFunction();
+
+			$scopeIsInMethodClassOrSubClass = TrinaryLogic::createFromBoolean($scope->isInClass())->lazyAnd(
+				$classType->getObjectClassNames(),
+				static fn (string $objectClassName) => TrinaryLogic::createFromBoolean(
+					$scope->isInClass()
+					&& ($scope->getClassReflection()->getName() === $objectClassName || $scope->getClassReflection()->isSubclassOf($objectClassName)),
+				),
+			);
+			if (
+				!$function instanceof MethodReflection
+				|| $function->isStatic()
+				|| $scopeIsInMethodClassOrSubClass->no()
+			) {
+				// per php-src docs, this method can be called statically, even if declared non-static
+				if (strtolower($method->getName()) === 'loadhtml' && $method->getDeclaringClass()->getName() === DOMDocument::class) {
+					return [[], null];
+				}
+
+				return [
+					array_merge($errors, [
+						RuleErrorBuilder::message(sprintf(
+							'Static call to instance method %s::%s().',
+							$method->getDeclaringClass()->getDisplayName(),
+							$method->getName(),
+						))->identifier('method.staticCall')->build(),
+					]),
+					$method,
+				];
+			}
+		}
+
+		if (!$scope->canCallMethod($method)) {
+			$errors = array_merge($errors, [
+				RuleErrorBuilder::message(sprintf(
+					'Call to %s %s %s() of class %s.',
+					$method->isPrivate() ? 'private' : 'protected',
+					$method->isStatic() ? 'static method' : 'method',
+					$method->getName(),
+					$method->getDeclaringClass()->getDisplayName(),
+				))
+					->identifier(sprintf('staticMethod.%s', $method->isPrivate() ? 'private' : 'protected'))
+					->build(),
+			]);
+		}
+
+		if ($isAbstract) {
+			return [
+				[
+					RuleErrorBuilder::message(sprintf(
+						'Cannot call abstract%s method %s::%s().',
+						$method->isStatic() ? ' static' : '',
+						$method->getDeclaringClass()->getDisplayName(),
+						$method->getName(),
+					))->identifier(sprintf(
+						'%s.callToAbstract',
+						$method->isStatic() ? 'staticMethod' : 'method',
+					))->build(),
+				],
+				$method,
+			];
+		}
+
+		$lowercasedMethodName = SprintfHelper::escapeFormatString(sprintf(
+			'%s %s',
+			$method->isStatic() ? 'static method' : 'method',
+			$method->getDeclaringClass()->getDisplayName() . '::' . $method->getName() . '()',
+		));
+
+		if (
+			$this->checkFunctionNameCase
+			&& $method->getName() !== $methodName
+		) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Call to %s with incorrect case: %s',
+				$lowercasedMethodName,
+				$methodName,
+			))->identifier('staticMethod.nameCase')->build();
+		}
+
+		return [$errors, $method];
+	}
+
+}
diff --git a/src/Rules/Methods/StaticMethodCallableRule.php b/src/Rules/Methods/StaticMethodCallableRule.php
new file mode 100644
index 00000000..892b4e73
--- /dev/null
+++ b/src/Rules/Methods/StaticMethodCallableRule.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Rules\Methods;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\StaticMethodCallableNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<StaticMethodCallableNode>
+ */
+final class StaticMethodCallableRule implements Rule
+{
+
+	public function __construct(private StaticMethodCallCheck $methodCallCheck, private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return StaticMethodCallableNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$this->phpVersion->supportsFirstClassCallables()) {
+			return [
+				RuleErrorBuilder::message('First-class callables are supported only on PHP 8.1 and later.')
+					->nonIgnorable()
+					->identifier('callable.notSupported')
+					->build(),
+			];
+		}
+
+		$methodName = $node->getName();
+		if (!$methodName instanceof Node\Identifier) {
+			return [];
+		}
+
+		$methodNameName = $methodName->toString();
+
+		[$errors, $methodReflection] = $this->methodCallCheck->check($scope, $methodNameName, $node->getClass());
+		if ($methodReflection === null) {
+			return $errors;
+		}
+
+		$declaringClass = $methodReflection->getDeclaringClass();
+		if ($declaringClass->hasNativeMethod($methodNameName)) {
+			return $errors;
+		}
+
+		$messagesMethodName = SprintfHelper::escapeFormatString($declaringClass->getDisplayName() . '::' . $methodReflection->getName() . '()');
+
+		$errors[] = RuleErrorBuilder::message(sprintf('Creating callable from a non-native static method %s.', $messagesMethodName))
+			->identifier('callable.nonNativeMethod')
+			->build();
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Missing/MissingReturnRule.php b/src/Rules/Missing/MissingReturnRule.php
new file mode 100644
index 00000000..d68ab267
--- /dev/null
+++ b/src/Rules/Missing/MissingReturnRule.php
@@ -0,0 +1,152 @@
+<?php 
+
+namespace PHPStan\Rules\Missing;
+return;
+
+use Generator;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ExecutionEndNode;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use PHPStan\Type\VoidType;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<ExecutionEndNode>
+ */
+final class MissingReturnRule implements Rule
+{
+
+	public function __construct(
+		private bool $checkExplicitMixedMissingReturn,
+		private bool $checkPhpDocMissingReturn,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ExecutionEndNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$statementResult = $node->getStatementResult();
+		if ($statementResult->isAlwaysTerminating()) {
+			return [];
+		}
+
+		$anonymousFunctionReturnType = $scope->getAnonymousFunctionReturnType();
+		$scopeFunction = $scope->getFunction();
+		if ($anonymousFunctionReturnType !== null) {
+			$returnType = $anonymousFunctionReturnType;
+			$description = 'Anonymous function';
+			if (!$node->hasNativeReturnTypehint()) {
+				return [];
+			}
+		} elseif ($scopeFunction !== null) {
+			$returnType = $scopeFunction->getReturnType();
+			if ($scopeFunction instanceof PhpMethodFromParserNodeReflection) {
+				if (!$scopeFunction->isPropertyHook()) {
+					$description = sprintf('Method %s::%s()', $scopeFunction->getDeclaringClass()->getDisplayName(), $scopeFunction->getName());
+				} else {
+					$description = sprintf('%s hook for property %s::$%s', ucfirst($scopeFunction->getPropertyHookName()), $scopeFunction->getDeclaringClass()->getDisplayName(), $scopeFunction->getHookedPropertyName());
+				}
+			} else {
+				$description = sprintf('Function %s()', $scopeFunction->getName());
+			}
+		} else {
+			throw new ShouldNotHappenException();
+		}
+
+		$returnType = TypeUtils::resolveLateResolvableTypes($returnType);
+
+		$isVoidSuperType = $returnType->isSuperTypeOf(new VoidType());
+		if ($isVoidSuperType->yes() && !$returnType instanceof MixedType) {
+			return [];
+		}
+
+		if ($statementResult->hasYield()) {
+			if ($this->checkPhpDocMissingReturn) {
+				$generatorReturnType = $returnType->getTemplateType(Generator::class, 'TReturn');
+				if (!$generatorReturnType instanceof ErrorType) {
+					$returnType = $generatorReturnType;
+					if ($returnType->isVoid()->yes()) {
+						return [];
+					}
+					if (!$returnType instanceof MixedType) {
+						return [
+							RuleErrorBuilder::message(
+								sprintf('%s should return %s but return statement is missing.', $description, $returnType->describe(VerbosityLevel::typeOnly())),
+							)
+								->line($node->getNode()->getStartLine())
+								->identifier('return.missing')
+								->build(),
+						];
+					}
+				}
+			}
+			return [];
+		}
+
+		if (
+			!$node->hasNativeReturnTypehint()
+			&& !$this->checkPhpDocMissingReturn
+			&& TypeCombinator::containsNull($returnType)
+		) {
+			return [];
+		}
+
+		if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+			$errorBuilder = RuleErrorBuilder::message(sprintf('%s should always throw an exception or terminate script execution but doesn\'t do that.', $description))->line($node->getNode()->getStartLine());
+
+			if ($node->hasNativeReturnTypehint()) {
+				$errorBuilder->nonIgnorable();
+			}
+
+			$errorBuilder->identifier('return.never');
+
+			return [
+				$errorBuilder->build(),
+			];
+		}
+
+		if (
+			$returnType instanceof MixedType
+			&& !$returnType instanceof TemplateMixedType
+			&& !$node->hasNativeReturnTypehint()
+			&& (
+				!$returnType->isExplicitMixed()
+				|| !$this->checkExplicitMixedMissingReturn
+			)
+		) {
+			return [];
+		}
+
+		$errorBuilder = RuleErrorBuilder::message(
+			sprintf('%s should return %s but return statement is missing.', $description, $returnType->describe(VerbosityLevel::typeOnly())),
+		)->line($node->getNode()->getStartLine());
+
+		if ($node->hasNativeReturnTypehint()) {
+			$errorBuilder->nonIgnorable();
+		}
+
+		$errorBuilder->identifier('return.missing');
+
+		return [
+			$errorBuilder->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/MissingTypehintCheck.php b/src/Rules/MissingTypehintCheck.php
new file mode 100644
index 00000000..2d37d207
--- /dev/null
+++ b/src/Rules/MissingTypehintCheck.php
@@ -0,0 +1,185 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use Closure;
+use Generator;
+use Iterator;
+use IteratorAggregate;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\ConditionalType;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use Traversable;
+use function array_filter;
+use function array_keys;
+use function array_merge;
+use function count;
+use function implode;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+final class MissingTypehintCheck
+{
+
+	public const MISSING_ITERABLE_VALUE_TYPE_TIP = 'See: https://phpstan.org/blog/solving-phpstan-no-value-type-specified-in-iterable-type';
+
+	private const ITERABLE_GENERIC_CLASS_NAMES = [
+		Traversable::class,
+		Iterator::class,
+		IteratorAggregate::class,
+		Generator::class,
+	];
+
+	/**
+	 * @param string[] $skipCheckGenericClasses
+	 */
+	public function __construct(
+		private bool $checkMissingCallableSignature,
+		private array $skipCheckGenericClasses,
+	)
+	{
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	public function getIterableTypesWithMissingValueTypehint(Type $type): array
+	{
+		$iterablesWithMissingValueTypehint = [];
+		TypeTraverser::map($type, function (Type $type, callable $traverse) use (&$iterablesWithMissingValueTypehint): Type {
+			if ($type instanceof TemplateType) {
+				return $type;
+			}
+			if ($type instanceof AccessoryType) {
+				return $type;
+			}
+			if ($type instanceof ConditionalType || $type instanceof ConditionalTypeForParameter) {
+				$iterablesWithMissingValueTypehint = array_merge(
+					$iterablesWithMissingValueTypehint,
+					$this->getIterableTypesWithMissingValueTypehint($type->getIf()),
+					$this->getIterableTypesWithMissingValueTypehint($type->getElse()),
+				);
+
+				return $type;
+			}
+			if ($type->isIterable()->yes()) {
+				$iterableValue = $type->getIterableValueType();
+				if ($iterableValue instanceof MixedType && !$iterableValue->isExplicitMixed()) {
+					$iterablesWithMissingValueTypehint[] = $type;
+				}
+				if ($type instanceof IntersectionType) {
+					if ($type->isList()->yes()) {
+						return $traverse($type->getIterableValueType());
+					}
+
+					return $type;
+				}
+			}
+			return $traverse($type);
+		});
+
+		return $iterablesWithMissingValueTypehint;
+	}
+
+	/**
+	 * @return array<int, array{string, string}>
+	 */
+	public function getNonGenericObjectTypesWithGenericClass(Type $type): array
+	{
+		$objectTypes = [];
+		TypeTraverser::map($type, function (Type $type, callable $traverse) use (&$objectTypes): Type {
+			if ($type instanceof GenericObjectType || $type instanceof GenericStaticType) {
+				$traverse($type);
+				return $type;
+			}
+			if ($type instanceof TemplateType) {
+				return $type;
+			}
+			if ($type instanceof ObjectType) {
+				$classReflection = $type->getClassReflection();
+				if ($classReflection === null) {
+					return $type;
+				}
+				if (in_array($classReflection->getName(), self::ITERABLE_GENERIC_CLASS_NAMES, true)) {
+					// checked by getIterableTypesWithMissingValueTypehint() already
+					return $type;
+				}
+				if (in_array($classReflection->getName(), $this->skipCheckGenericClasses, true)) {
+					return $type;
+				}
+				if ($classReflection->isTrait()) {
+					return $type;
+				}
+				if (!$classReflection->isGeneric()) {
+					return $type;
+				}
+
+				$resolvedType = TemplateTypeHelper::resolveToBounds($type);
+				if (!$resolvedType instanceof ObjectType) {
+					throw new ShouldNotHappenException();
+				}
+
+				$templateTypes = $classReflection->getTemplateTypeMap()->getTypes();
+				$templateTypesCount = count($templateTypes);
+				$requiredTemplateTypesCount = count(array_filter($templateTypes, static fn (Type $type) => $type instanceof TemplateType && $type->getDefault() === null));
+				if ($requiredTemplateTypesCount === 0) {
+					return $type;
+				}
+
+				$templateTypesList = implode(', ', array_keys($templateTypes));
+				if ($requiredTemplateTypesCount !== $templateTypesCount) {
+					$templateTypesList .= sprintf(' (%d-%d required)', $requiredTemplateTypesCount, $templateTypesCount);
+				}
+
+				$objectTypes[] = [
+					sprintf('%s %s', strtolower($classReflection->getClassTypeDescription()), $classReflection->getDisplayName(false)),
+					$templateTypesList,
+				];
+				return $type;
+			}
+
+			return $traverse($type);
+		});
+
+		return $objectTypes;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	public function getCallablesWithMissingSignature(Type $type): array
+	{
+		if (!$this->checkMissingCallableSignature) {
+			return [];
+		}
+
+		$result = [];
+		TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$result): Type {
+			if (
+				($type instanceof CallableType && $type->isCommonCallable())
+				|| ($type instanceof ClosureType && $type->isCommonCallable())
+				|| ($type instanceof ObjectType && $type->getClassName() === Closure::class)
+			) {
+				$result[] = $type;
+			}
+			return $traverse($type);
+		});
+
+		return $result;
+	}
+
+}
diff --git a/src/Rules/Names/UsedNamesRule.php b/src/Rules/Names/UsedNamesRule.php
new file mode 100644
index 00000000..15e511d9
--- /dev/null
+++ b/src/Rules/Names/UsedNamesRule.php
@@ -0,0 +1,150 @@
+<?php 
+
+namespace PHPStan\Rules\Names;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
+use PhpParser\Node\Stmt\Enum_;
+use PhpParser\Node\Stmt\GroupUse;
+use PhpParser\Node\Stmt\Interface_;
+use PhpParser\Node\Stmt\Namespace_;
+use PhpParser\Node\Stmt\Trait_;
+use PhpParser\Node\Stmt\Use_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FileNode;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<FileNode>
+ */
+final class UsedNamesRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FileNode::class;
+	}
+
+	/**
+	 * @param FileNode $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$usedNames = [];
+		$errors = [];
+		foreach ($node->getNodes() as $oneNode) {
+			if ($oneNode instanceof Namespace_) {
+				$namespaceName = $oneNode->name !== null ? $oneNode->name->toString() : '';
+				foreach ($oneNode->stmts as $stmt) {
+					foreach ($this->findErrorsForNode($stmt, $namespaceName, $usedNames) as $error) {
+						$errors[] = $error;
+					}
+				}
+				continue;
+			}
+
+			foreach ($this->findErrorsForNode($oneNode, '', $usedNames) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param array<string, string[]> $usedNames
+	 * @return list<IdentifierRuleError>
+	 */
+	private function findErrorsForNode(Node $node, string $namespace, array &$usedNames): array
+	{
+		$lowerNamespace = strtolower($namespace);
+		if ($node instanceof Use_) {
+			if ($this->shouldBeIgnored($node)) {
+				return [];
+			}
+			return $this->findErrorsInUses($node->uses, '', $lowerNamespace, $usedNames);
+		}
+
+		if ($node instanceof GroupUse) {
+			if ($this->shouldBeIgnored($node)) {
+				return [];
+			}
+			$useGroupPrefix = $node->prefix->toString();
+			return $this->findErrorsInUses($node->uses, $useGroupPrefix, $lowerNamespace, $usedNames);
+		}
+
+		if ($node instanceof ClassLike) {
+			if ($node->name === null) {
+				return [];
+			}
+			$type = 'class';
+			if ($node instanceof Interface_) {
+				$type = 'interface';
+			} elseif ($node instanceof Trait_) {
+				$type = 'trait';
+			} elseif ($node instanceof Enum_) {
+				$type = 'enum';
+			}
+			$name = $node->name->toLowerString();
+			if (in_array($name, $usedNames[$lowerNamespace] ?? [], true)) {
+				return [
+					RuleErrorBuilder::message(sprintf(
+						'Cannot declare %s %s because the name is already in use.',
+						$type,
+						$namespace !== '' ? $namespace . '\\' . $node->name->toString() : $node->name->toString(),
+					))
+						->identifier(sprintf('%s.nameInUse', $type))
+						->line($node->getStartLine())
+						->nonIgnorable()
+						->build(),
+				];
+			}
+			$usedNames[$lowerNamespace][] = $name;
+			return [];
+		}
+
+		return [];
+	}
+
+	/**
+	 * @param Node\UseItem[] $uses
+	 * @param array<string, string[]> $usedNames
+	 * @return list<IdentifierRuleError>
+	 */
+	private function findErrorsInUses(array $uses, string $useGroupPrefix, string $lowerNamespace, array &$usedNames): array
+	{
+		$errors = [];
+		foreach ($uses as $use) {
+			if ($this->shouldBeIgnored($use)) {
+				continue;
+			}
+			$useAlias = $use->getAlias()->toLowerString();
+			if (in_array($useAlias, $usedNames[$lowerNamespace] ?? [], true)) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Cannot use %s as %s because the name is already in use.',
+					$useGroupPrefix !== '' ? $useGroupPrefix . '\\' . $use->name->toString() : $use->name->toString(),
+					$use->getAlias()->toString(),
+				))
+					->identifier('use.nameInUse')
+					->line($use->getStartLine())
+					->nonIgnorable()
+					->build();
+				continue;
+			}
+			$usedNames[$lowerNamespace][] = $useAlias;
+		}
+		return $errors;
+	}
+
+	private function shouldBeIgnored(Use_|GroupUse|Node\UseItem $use): bool
+	{
+		return in_array($use->type, [Use_::TYPE_FUNCTION, Use_::TYPE_CONSTANT], true);
+	}
+
+}
diff --git a/src/Rules/Namespaces/ExistingNamesInGroupUseRule.php b/src/Rules/Namespaces/ExistingNamesInGroupUseRule.php
new file mode 100644
index 00000000..cfd465ee
--- /dev/null
+++ b/src/Rules/Namespaces/ExistingNamesInGroupUseRule.php
@@ -0,0 +1,132 @@
+<?php 
+
+namespace PHPStan\Rules\Namespaces;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Use_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function count;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Stmt\GroupUse>
+ */
+final class ExistingNamesInGroupUseRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private bool $checkFunctionNameCase,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\GroupUse::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		foreach ($node->uses as $use) {
+			$error = null;
+
+			/** @var Node\Name $name */
+			$name = Node\Name::concat($node->prefix, $use->name, ['startLine' => $use->getStartLine()]);
+			if (
+				$node->type === Use_::TYPE_CONSTANT
+				|| $use->type === Use_::TYPE_CONSTANT
+			) {
+				$error = $this->checkConstant($name);
+			} elseif (
+				$node->type === Use_::TYPE_FUNCTION
+				|| $use->type === Use_::TYPE_FUNCTION
+			) {
+				$error = $this->checkFunction($name);
+			} elseif ($use->type === Use_::TYPE_NORMAL) {
+				$error = $this->checkClass($name);
+			} else {
+				throw new ShouldNotHappenException();
+			}
+
+			if ($error === null) {
+				continue;
+			}
+
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	private function checkConstant(Node\Name $name): ?IdentifierRuleError
+	{
+		if (!$this->reflectionProvider->hasConstant($name, null)) {
+			return RuleErrorBuilder::message(sprintf('Used constant %s not found.', (string) $name))
+				->discoveringSymbolsTip()
+				->line($name->getStartLine())
+				->identifier('constant.notFound')
+				->build();
+		}
+
+		return null;
+	}
+
+	private function checkFunction(Node\Name $name): ?IdentifierRuleError
+	{
+		if (!$this->reflectionProvider->hasFunction($name, null)) {
+			return RuleErrorBuilder::message(sprintf('Used function %s not found.', (string) $name))
+				->discoveringSymbolsTip()
+				->line($name->getStartLine())
+				->identifier('function.notFound')
+				->build();
+		}
+
+		if ($this->checkFunctionNameCase) {
+			$functionReflection = $this->reflectionProvider->getFunction($name, null);
+			$realName = $functionReflection->getName();
+			$usedName = (string) $name;
+			if (
+				strtolower($realName) === strtolower($usedName)
+				&& $realName !== $usedName
+			) {
+				return RuleErrorBuilder::message(sprintf(
+					'Function %s used with incorrect case: %s.',
+					$realName,
+					$usedName,
+				))
+					->line($name->getStartLine())
+					->identifier('function.nameCase')
+					->build();
+			}
+		}
+
+		return null;
+	}
+
+	private function checkClass(Node\Name $name): ?IdentifierRuleError
+	{
+		$errors = $this->classCheck->checkClassNames([
+			new ClassNameNodePair((string) $name, $name),
+		]);
+		if (count($errors) === 0) {
+			return null;
+		} elseif (count($errors) === 1) {
+			return $errors[0];
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Rules/Namespaces/ExistingNamesInUseRule.php b/src/Rules/Namespaces/ExistingNamesInUseRule.php
new file mode 100644
index 00000000..afa5181d
--- /dev/null
+++ b/src/Rules/Namespaces/ExistingNamesInUseRule.php
@@ -0,0 +1,131 @@
+<?php 
+
+namespace PHPStan\Rules\Namespaces;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use function array_map;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Stmt\Use_>
+ */
+final class ExistingNamesInUseRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private bool $checkFunctionNameCase,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Use_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->type === Node\Stmt\Use_::TYPE_UNKNOWN) {
+			throw new ShouldNotHappenException();
+		}
+
+		foreach ($node->uses as $use) {
+			if ($use->type !== Node\Stmt\Use_::TYPE_UNKNOWN) {
+				throw new ShouldNotHappenException();
+			}
+		}
+
+		if ($node->type === Node\Stmt\Use_::TYPE_CONSTANT) {
+			return $this->checkConstants($node->uses);
+		}
+
+		if ($node->type === Node\Stmt\Use_::TYPE_FUNCTION) {
+			return $this->checkFunctions($node->uses);
+		}
+
+		return $this->checkClasses($node->uses);
+	}
+
+	/**
+	 * @param Node\UseItem[] $uses
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkConstants(array $uses): array
+	{
+		$errors = [];
+		foreach ($uses as $use) {
+			if ($this->reflectionProvider->hasConstant($use->name, null)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Used constant %s not found.', (string) $use->name))
+				->line($use->name->getStartLine())
+				->identifier('constant.notFound')
+				->discoveringSymbolsTip()
+				->build();
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param Node\UseItem[] $uses
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkFunctions(array $uses): array
+	{
+		$errors = [];
+		foreach ($uses as $use) {
+			if (!$this->reflectionProvider->hasFunction($use->name, null)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Used function %s not found.', (string) $use->name))
+					->line($use->name->getStartLine())
+					->identifier('function.notFound')
+					->discoveringSymbolsTip()
+					->build();
+			} elseif ($this->checkFunctionNameCase) {
+				$functionReflection = $this->reflectionProvider->getFunction($use->name, null);
+				$realName = $functionReflection->getName();
+				$usedName = (string) $use->name;
+				if (
+					strtolower($realName) === strtolower($usedName)
+					&& $realName !== $usedName
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Function %s used with incorrect case: %s.',
+						$realName,
+						$usedName,
+					))
+						->line($use->name->getStartLine())
+						->identifier('function.nameCase')
+						->build();
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param Node\UseItem[] $uses
+	 * @return list<IdentifierRuleError>
+	 */
+	private function checkClasses(array $uses): array
+	{
+		return $this->classCheck->checkClassNames(
+			array_map(static fn (Node\UseItem $use): ClassNameNodePair => new ClassNameNodePair((string) $use->name, $use->name), $uses),
+		);
+	}
+
+}
diff --git a/src/Rules/NonIgnorableRuleError.php b/src/Rules/NonIgnorableRuleError.php
new file mode 100644
index 00000000..a42474a5
--- /dev/null
+++ b/src/Rules/NonIgnorableRuleError.php
@@ -0,0 +1,10 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface NonIgnorableRuleError extends RuleError
+{
+
+}
diff --git a/src/Rules/NullsafeCheck.php b/src/Rules/NullsafeCheck.php
new file mode 100644
index 00000000..03d936eb
--- /dev/null
+++ b/src/Rules/NullsafeCheck.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node\Expr;
+
+final class NullsafeCheck
+{
+
+	public function containsNullSafe(Expr $expr): bool
+	{
+		if (
+			$expr instanceof Expr\NullsafePropertyFetch
+			|| $expr instanceof Expr\NullsafeMethodCall
+		) {
+			return true;
+		}
+
+		if ($expr instanceof Expr\ArrayDimFetch) {
+			return $this->containsNullSafe($expr->var);
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			return $this->containsNullSafe($expr->var);
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
+			return $this->containsNullSafe($expr->class);
+		}
+
+		if ($expr instanceof Expr\MethodCall) {
+			return $this->containsNullSafe($expr->var);
+		}
+
+		if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
+			return $this->containsNullSafe($expr->class);
+		}
+
+		if ($expr instanceof Expr\List_) {
+			foreach ($expr->items as $item) {
+				if ($item === null) {
+					continue;
+				}
+
+				if ($item->key !== null && $this->containsNullSafe($item->key)) {
+					return true;
+				}
+
+				if ($this->containsNullSafe($item->value)) {
+					return true;
+				}
+			}
+		}
+
+		return false;
+	}
+
+}
diff --git a/src/Rules/Operators/InvalidAssignVarRule.php b/src/Rules/Operators/InvalidAssignVarRule.php
new file mode 100644
index 00000000..7fe33436
--- /dev/null
+++ b/src/Rules/Operators/InvalidAssignVarRule.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Rules\Operators;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Assign;
+use PhpParser\Node\Expr\AssignOp;
+use PhpParser\Node\Expr\AssignRef;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\NullsafeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Expr>
+ */
+final class InvalidAssignVarRule implements Rule
+{
+
+	public function __construct(private NullsafeCheck $nullsafeCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Assign
+			&& !$node instanceof AssignOp
+			&& !$node instanceof AssignRef
+		) {
+			return [];
+		}
+
+		if ($this->nullsafeCheck->containsNullSafe($node->var)) {
+			return [
+				RuleErrorBuilder::message('Nullsafe operator cannot be on left side of assignment.')
+					->identifier('nullsafe.assign')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		if ($node instanceof AssignRef && $this->nullsafeCheck->containsNullSafe($node->expr)) {
+			return [
+				RuleErrorBuilder::message('Nullsafe operator cannot be on right side of assignment by reference.')
+					->identifier('nullsafe.byRef')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		if ($this->containsNonAssignableExpression($node->var)) {
+			return [
+				RuleErrorBuilder::message('Expression on left side of assignment is not assignable.')
+					->identifier('assign.invalidExpr')
+					->nonIgnorable()
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+	private function containsNonAssignableExpression(Expr $expr): bool
+	{
+		if ($expr instanceof Expr\Variable) {
+			return false;
+		}
+
+		if ($expr instanceof Expr\PropertyFetch) {
+			return false;
+		}
+
+		if ($expr instanceof Expr\ArrayDimFetch) {
+			return false;
+		}
+
+		if ($expr instanceof Expr\StaticPropertyFetch) {
+			return false;
+		}
+
+		if ($expr instanceof Expr\List_) {
+			foreach ($expr->items as $item) {
+				if ($item === null) {
+					continue;
+				}
+				if (!$this->containsNonAssignableExpression($item->value)) {
+					continue;
+				}
+
+				return true;
+			}
+
+			return false;
+		}
+
+		return true;
+	}
+
+}
diff --git a/src/Rules/Operators/InvalidBinaryOperationRule.php b/src/Rules/Operators/InvalidBinaryOperationRule.php
new file mode 100644
index 00000000..c5846796
--- /dev/null
+++ b/src/Rules/Operators/InvalidBinaryOperationRule.php
@@ -0,0 +1,124 @@
+<?php 
+
+namespace PHPStan\Rules\Operators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+use function strlen;
+use function substr;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class InvalidBinaryOperationRule implements Rule
+{
+
+	public function __construct(
+		private ExprPrinter $exprPrinter,
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Node\Expr\BinaryOp
+			&& !$node instanceof Node\Expr\AssignOp
+		) {
+			return [];
+		}
+
+		$leftName = '__PHPSTAN__LEFT__';
+		$rightName = '__PHPSTAN__RIGHT__';
+		$leftVariable = new Node\Expr\Variable($leftName);
+		$rightVariable = new Node\Expr\Variable($rightName);
+		if ($node instanceof Node\Expr\AssignOp) {
+			$identifier = 'assignOp';
+			$newNode = clone $node;
+			$newNode->setAttribute('phpstan_cache_printer', null);
+			$left = $node->var;
+			$right = $node->expr;
+			$newNode->var = $leftVariable;
+			$newNode->expr = $rightVariable;
+		} else {
+			$identifier = 'binaryOp';
+			$newNode = clone $node;
+			$newNode->setAttribute('phpstan_cache_printer', null);
+			$left = $node->left;
+			$right = $node->right;
+			$newNode->left = $leftVariable;
+			$newNode->right = $rightVariable;
+		}
+
+		if ($node instanceof Node\Expr\AssignOp\Concat || $node instanceof Node\Expr\BinaryOp\Concat) {
+			$callback = static fn (Type $type): bool => !$type->toString() instanceof ErrorType;
+		} elseif ($node instanceof Node\Expr\AssignOp\Plus || $node instanceof Node\Expr\BinaryOp\Plus) {
+			$callback = static fn (Type $type): bool => !$type->toNumber() instanceof ErrorType || $type->isArray()->yes();
+		} else {
+			$callback = static fn (Type $type): bool => !$type->toNumber() instanceof ErrorType;
+		}
+
+		$leftType = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$left,
+			'',
+			$callback,
+		)->getType();
+		if ($leftType instanceof ErrorType) {
+			return [];
+		}
+
+		$rightType = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$right,
+			'',
+			$callback,
+		)->getType();
+		if ($rightType instanceof ErrorType) {
+			return [];
+		}
+
+		if (!$scope instanceof MutatingScope) {
+			throw new ShouldNotHappenException();
+		}
+
+		$scope = $scope
+			->assignVariable($leftName, $leftType, $leftType, TrinaryLogic::createYes())
+			->assignVariable($rightName, $rightType, $rightType, TrinaryLogic::createYes());
+
+		if (!$scope->getType($newNode) instanceof ErrorType) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Binary operation "%s" between %s and %s results in an error.',
+				substr(substr($this->exprPrinter->printExpr($newNode), strlen($leftName) + 2), 0, -(strlen($rightName) + 2)),
+				$scope->getType($left)->describe(VerbosityLevel::value()),
+				$scope->getType($right)->describe(VerbosityLevel::value()),
+			))
+				->line($left->getStartLine())
+				->identifier(sprintf('%s.invalid', $identifier))
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Operators/InvalidComparisonOperationRule.php b/src/Rules/Operators/InvalidComparisonOperationRule.php
new file mode 100644
index 00000000..4100518f
--- /dev/null
+++ b/src/Rules/Operators/InvalidComparisonOperationRule.php
@@ -0,0 +1,168 @@
+<?php 
+
+namespace PHPStan\Rules\Operators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function get_class;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\BinaryOp>
+ */
+final class InvalidComparisonOperationRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\BinaryOp::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Node\Expr\BinaryOp\Equal
+			&& !$node instanceof Node\Expr\BinaryOp\NotEqual
+			&& !$node instanceof Node\Expr\BinaryOp\Smaller
+			&& !$node instanceof Node\Expr\BinaryOp\SmallerOrEqual
+			&& !$node instanceof Node\Expr\BinaryOp\Greater
+			&& !$node instanceof Node\Expr\BinaryOp\GreaterOrEqual
+			&& !$node instanceof Node\Expr\BinaryOp\Spaceship
+		) {
+			return [];
+		}
+
+		if ($this->isNumberType($scope, $node->left) && $this->isNumberType($scope, $node->right)) {
+			return [];
+		}
+
+		if (
+			($this->isNumberType($scope, $node->left) && (
+				$this->isPossiblyNullableObjectType($scope, $node->right) || $this->isPossiblyNullableArrayType($scope, $node->right)
+			))
+			|| ($this->isNumberType($scope, $node->right) && (
+				$this->isPossiblyNullableObjectType($scope, $node->left) || $this->isPossiblyNullableArrayType($scope, $node->left)
+			))
+		) {
+			switch (get_class($node)) {
+				case Node\Expr\BinaryOp\Equal::class:
+					$nodeType = 'equal';
+					break;
+				case Node\Expr\BinaryOp\NotEqual::class:
+					$nodeType = 'notEqual';
+					break;
+				case Node\Expr\BinaryOp\Greater::class:
+					$nodeType = 'greater';
+					break;
+				case Node\Expr\BinaryOp\GreaterOrEqual::class:
+					$nodeType = 'greaterOrEqual';
+					break;
+				case Node\Expr\BinaryOp\Smaller::class:
+					$nodeType = 'smaller';
+					break;
+				case Node\Expr\BinaryOp\SmallerOrEqual::class:
+					$nodeType = 'smallerOrEqual';
+					break;
+				case Node\Expr\BinaryOp\Spaceship::class:
+					$nodeType = 'spaceship';
+					break;
+				default:
+					throw new ShouldNotHappenException();
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Comparison operation "%s" between %s and %s results in an error.',
+					$node->getOperatorSigil(),
+					$scope->getType($node->left)->describe(VerbosityLevel::value()),
+					$scope->getType($node->right)->describe(VerbosityLevel::value()),
+				))
+					->line($node->left->getStartLine())
+					->identifier(sprintf('%s.invalid', $nodeType))
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+	private function isNumberType(Scope $scope, Node\Expr $expr): bool
+	{
+		$acceptedType = new UnionType([new IntegerType(), new FloatType()]);
+		$onlyNumber = static fn (Type $type): bool => $acceptedType->isSuperTypeOf($type)->yes();
+
+		$type = $this->ruleLevelHelper->findTypeToCheck($scope, $expr, '', $onlyNumber)->getType();
+
+		if (
+			$type instanceof ErrorType
+			|| !$type->equals($scope->getType($expr))
+		) {
+			return false;
+		}
+
+		// SimpleXMLElement can be cast to number union type
+		return !$acceptedType->isSuperTypeOf($type)->no() || $acceptedType->equals($type->toNumber());
+	}
+
+	private function isPossiblyNullableObjectType(Scope $scope, Node\Expr $expr): bool
+	{
+		$acceptedType = new ObjectWithoutClassType();
+
+		$type = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$expr,
+			'',
+			static fn (Type $type): bool => $acceptedType->isSuperTypeOf($type)->yes(),
+		)->getType();
+
+		if ($type instanceof ErrorType) {
+			return false;
+		}
+
+		if (TypeCombinator::containsNull($type) && !$type->isNull()->yes()) {
+			$type = TypeCombinator::removeNull($type);
+		}
+
+		$isSuperType = $acceptedType->isSuperTypeOf($type);
+		if ($type instanceof BenevolentUnionType) {
+			return !$isSuperType->no();
+		}
+
+		return $isSuperType->yes();
+	}
+
+	private function isPossiblyNullableArrayType(Scope $scope, Node\Expr $expr): bool
+	{
+		$type = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$expr,
+			'',
+			static fn (Type $type): bool => $type->isArray()->yes(),
+		)->getType();
+
+		if (TypeCombinator::containsNull($type) && !$type->isNull()->yes()) {
+			$type = TypeCombinator::removeNull($type);
+		}
+
+		return !($type instanceof ErrorType) && $type->isArray()->yes();
+	}
+
+}
diff --git a/src/Rules/Operators/InvalidIncDecOperationRule.php b/src/Rules/Operators/InvalidIncDecOperationRule.php
new file mode 100644
index 00000000..d7a9aed3
--- /dev/null
+++ b/src/Rules/Operators/InvalidIncDecOperationRule.php
@@ -0,0 +1,113 @@
+<?php 
+
+namespace PHPStan\Rules\Operators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function get_class;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class InvalidIncDecOperationRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Node\Expr\PreInc
+			&& !$node instanceof Node\Expr\PostInc
+			&& !$node instanceof Node\Expr\PreDec
+			&& !$node instanceof Node\Expr\PostDec
+		) {
+			return [];
+		}
+
+		switch (get_class($node)) {
+			case Node\Expr\PreInc::class:
+				$nodeType = 'preInc';
+				break;
+			case Node\Expr\PostInc::class:
+				$nodeType = 'postInc';
+				break;
+			case Node\Expr\PreDec::class:
+				$nodeType = 'preDec';
+				break;
+			case Node\Expr\PostDec::class:
+				$nodeType = 'postDec';
+				break;
+			default:
+				throw new ShouldNotHappenException();
+		}
+
+		$operatorString = $node instanceof Node\Expr\PreInc || $node instanceof Node\Expr\PostInc ? '++' : '--';
+
+		if (
+			!$node->var instanceof Node\Expr\Variable
+			&& !$node->var instanceof Node\Expr\ArrayDimFetch
+			&& !$node->var instanceof Node\Expr\PropertyFetch
+			&& !$node->var instanceof Node\Expr\StaticPropertyFetch
+		) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot use %s on a non-variable.',
+					$operatorString,
+				))
+					->line($node->var->getStartLine())
+					->identifier(sprintf('%s.expr', $nodeType))
+					->build(),
+			];
+		}
+
+		$allowedTypes = new UnionType([new BooleanType(), new FloatType(), new IntegerType(), new StringType(), new NullType(), new ObjectType('SimpleXMLElement')]);
+		$varType = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->var,
+			'',
+			static fn (Type $type): bool => $allowedTypes->isSuperTypeOf($type)->yes(),
+		)->getType();
+
+		if ($varType instanceof ErrorType || $allowedTypes->isSuperTypeOf($varType)->yes()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Cannot use %s on %s.',
+				$operatorString,
+				$varType->describe(VerbosityLevel::value()),
+			))
+				->line($node->var->getStartLine())
+				->identifier(sprintf('%s.type', $nodeType))
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Operators/InvalidUnaryOperationRule.php b/src/Rules/Operators/InvalidUnaryOperationRule.php
new file mode 100644
index 00000000..d62f7fbe
--- /dev/null
+++ b/src/Rules/Operators/InvalidUnaryOperationRule.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Rules\Operators;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class InvalidUnaryOperationRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!$node instanceof Node\Expr\UnaryPlus
+			&& !$node instanceof Node\Expr\UnaryMinus
+			&& !$node instanceof Node\Expr\BitwiseNot
+		) {
+			return [];
+		}
+
+		$varName = '__PHPSTAN__LEFT__';
+		$variable = new Node\Expr\Variable($varName);
+		$newNode = clone $node;
+		$newNode->setAttribute('phpstan_cache_printer', null);
+		$newNode->expr = $variable;
+
+		if ($node instanceof Node\Expr\BitwiseNot) {
+			$callback = static fn (Type $type): bool => $type->isString()->yes() || $type->isInteger()->yes() || $type->isFloat()->yes();
+		} else {
+			$callback = static fn (Type $type): bool => !$type->toNumber() instanceof ErrorType;
+		}
+
+		$exprType = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->expr,
+			'',
+			$callback,
+		)->getType();
+		if ($exprType instanceof ErrorType) {
+			return [];
+		}
+
+		if (!$scope instanceof MutatingScope) {
+			throw new ShouldNotHappenException();
+		}
+
+		$scope = $scope->assignVariable($varName, $exprType, $exprType, TrinaryLogic::createYes());
+		if (!$scope->getType($newNode) instanceof ErrorType) {
+			return [];
+		}
+
+		if ($node instanceof Node\Expr\UnaryPlus) {
+			$operator = '+';
+		} elseif ($node instanceof Node\Expr\UnaryMinus) {
+			$operator = '-';
+		} else {
+			$operator = '~';
+		}
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Unary operation "%s" on %s results in an error.',
+				$operator,
+				$scope->getType($node->expr)->describe(VerbosityLevel::value()),
+			))
+				->line($node->expr->getStartLine())
+				->identifier('unaryOp.invalid')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/ParameterCastableToStringCheck.php b/src/Rules/ParameterCastableToStringCheck.php
new file mode 100644
index 00000000..9e433e6c
--- /dev/null
+++ b/src/Rules/ParameterCastableToStringCheck.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node\Arg;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+final class ParameterCastableToStringCheck
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	/** @param callable(Type): Type $castFn */
+	public function checkParameter(
+		Arg $parameter,
+		Scope $scope,
+		string $errorMessageTemplate,
+		callable $castFn,
+		string $functionName,
+		string $parameterName,
+	): ?IdentifierRuleError
+	{
+		if ($parameter->unpack) {
+			return null;
+		}
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$parameter->value,
+			'',
+			static fn (Type $type): bool => $type->isArray()->yes() && !$castFn($type->getIterableValueType()) instanceof ErrorType,
+		);
+
+		if (
+			! $typeResult->getType()->isArray()->yes()
+			|| !$castFn($typeResult->getType()->getIterableValueType()) instanceof ErrorType
+		) {
+			return null;
+		}
+
+		return RuleErrorBuilder::message(
+			sprintf($errorMessageTemplate, $parameterName, $functionName, $typeResult->getType()->describe(VerbosityLevel::typeOnly())),
+		)->identifier('argument.type')->build();
+	}
+
+	public function getParameterName(Arg $parameter, int $parameterIdx, ?ParameterReflection $parameterReflection): string
+	{
+		if ($parameterReflection === null) {
+			return sprintf('#%d', $parameterIdx + 1);
+		}
+
+		$paramName = $parameterReflection->getName();
+		$origParameter = $parameter->getAttributes()[ArgumentsNormalizer::ORIGINAL_ARG_ATTRIBUTE] ?? null;
+
+		if (!$origParameter instanceof Arg) {
+			$origParameter = $parameter;
+		}
+
+		return $origParameter->name !== null
+			? sprintf('$%s', $paramName)
+			: sprintf('#%d $%s', $parameterIdx + 1, $paramName);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/AssertRuleHelper.php b/src/Rules/PhpDoc/AssertRuleHelper.php
new file mode 100644
index 00000000..0be53709
--- /dev/null
+++ b/src/Rules/PhpDoc/AssertRuleHelper.php
@@ -0,0 +1,210 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Function_;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\PhpDoc\Tag\AssertTag;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function array_key_exists;
+use function array_merge;
+use function sprintf;
+use function substr;
+
+final class AssertRuleHelper
+{
+
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionProvider $reflectionProvider,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private ClassNameCheck $classCheck,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Function_|ClassMethod $node,
+		ExtendedMethodReflection|FunctionReflection $reflection,
+		ParametersAcceptor $acceptor,
+	): array
+	{
+		$parametersByName = [];
+		foreach ($acceptor->getParameters() as $parameter) {
+			$parametersByName[$parameter->getName()] = $parameter->getType();
+		}
+
+		if ($reflection instanceof ExtendedMethodReflection && !$reflection->isStatic()) {
+			$class = $reflection->getDeclaringClass();
+			$parametersByName['this'] = new ObjectType($class->getName(), null, $class);
+		}
+
+		$context = InitializerExprContext::createEmpty();
+
+		$errors = [];
+		foreach ($reflection->getAsserts()->getAll() as $assert) {
+			$parameterName = substr($assert->getParameter()->getParameterName(), 1);
+			if (!array_key_exists($parameterName, $parametersByName)) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Assert references unknown parameter $%s.', $parameterName))
+					->identifier('parameter.notFound')
+					->build();
+				continue;
+			}
+
+			if (!$assert->isExplicit()) {
+				continue;
+			}
+
+			$assertedExpr = $assert->getParameter()->getExpr(new TypeExpr($parametersByName[$parameterName]));
+			$assertedExprType = $this->initializerExprTypeResolver->getType($assertedExpr, $context);
+			$assertedExprString = $assert->getParameter()->describe();
+			if ($assertedExprType instanceof ErrorType) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Assert references unknown %s.', $assertedExprString))
+					->identifier('assert.unknownExpr')
+					->build();
+				continue;
+			}
+
+			$assertedType = $assert->getType();
+
+			$tagName = [
+				AssertTag::NULL => '@phpstan-assert',
+				AssertTag::IF_TRUE => '@phpstan-assert-if-true',
+				AssertTag::IF_FALSE => '@phpstan-assert-if-false',
+			][$assert->getIf()];
+
+			if ($this->unresolvableTypeHelper->containsUnresolvableType($assertedType)) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s for %s contains unresolvable type.',
+					$tagName,
+					$assertedExprString,
+				))->identifier('assert.unresolvableType')->build();
+				continue;
+			}
+
+			$isSuperType = $assertedType->isSuperTypeOf($assertedExprType);
+			if (!$isSuperType->maybe()) {
+				if ($assert->isNegated() ? $isSuperType->yes() : $isSuperType->no()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Asserted %stype %s for %s with type %s can never happen.',
+						$assert->isNegated() ? 'negated ' : '',
+						$assertedType->describe(VerbosityLevel::precise()),
+						$assertedExprString,
+						$assertedExprType->describe(VerbosityLevel::precise()),
+					))->identifier('assert.impossibleType')->build();
+				} elseif ($assert->isNegated() ? $isSuperType->no() : $isSuperType->yes()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Asserted %stype %s for %s with type %s does not narrow down the type.',
+						$assert->isNegated() ? 'negated ' : '',
+						$assertedType->describe(VerbosityLevel::precise()),
+						$assertedExprString,
+						$assertedExprType->describe(VerbosityLevel::precise()),
+					))->identifier('assert.alreadyNarrowedType')->build();
+				}
+			}
+
+			foreach ($assertedType->getReferencedClasses() as $class) {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s for %s contains unknown class %s.',
+						$tagName,
+						$assertedExprString,
+						$class,
+					))->identifier('class.notFound')->build();
+					continue;
+				}
+
+				$classReflection = $this->reflectionProvider->getClass($class);
+				if ($classReflection->isTrait()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s for %s contains invalid type %s.',
+						$tagName,
+						$assertedExprString,
+						$class,
+					))->identifier('assert.trait')->build();
+					continue;
+				}
+
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $node),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+
+			$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+				$assertedType,
+				sprintf('PHPDoc tag %s for %s contains generic type %%s but %%s %%s is not generic.', $tagName, $assertedExprString),
+				sprintf('Generic type %%s in PHPDoc tag %s for %s does not specify all template types of %%s %%s: %%s', $tagName, $assertedExprString),
+				sprintf('Generic type %%s in PHPDoc tag %s for %s specifies %%d template types, but %%s %%s supports only %%d: %%s', $tagName, $assertedExprString),
+				sprintf('Type %%s in generic type %%s in PHPDoc tag %s for %s is not subtype of template type %%s of %%s %%s.', $tagName, $assertedExprString),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag %s for %s is in conflict with %%s template type %%s of %%s %%s.', $tagName, $assertedExprString),
+				sprintf('Call-site variance of %%s in generic type %%s in PHPDoc tag %s for %s is redundant, template type %%s of %%s %%s has the same variance.', $tagName, $assertedExprString),
+			));
+
+			if (!$this->checkMissingTypehints) {
+				continue;
+			}
+
+			foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($assertedType) as $iterableType) {
+				$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s for %s has no value type specified in iterable type %s.',
+					$tagName,
+					$assertedExprString,
+					$iterableTypeDescription,
+				))
+					->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+					->identifier('missingType.iterableValue')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($assertedType) as [$innerName, $genericTypeNames]) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s for %s contains generic %s but does not specify its types: %s',
+					$tagName,
+					$assertedExprString,
+					$innerName,
+					$genericTypeNames,
+				))
+					->identifier('missingType.generics')
+					->build();
+			}
+
+			foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($assertedType) as $callableType) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s for %s has no signature specified for %s.',
+					$tagName,
+					$assertedExprString,
+					$callableType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('missingType.callable')->build();
+			}
+		}
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/ConditionalReturnTypeRuleHelper.php b/src/Rules/PhpDoc/ConditionalReturnTypeRuleHelper.php
new file mode 100644
index 00000000..533a1e91
--- /dev/null
+++ b/src/Rules/PhpDoc/ConditionalReturnTypeRuleHelper.php
@@ -0,0 +1,129 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ConditionalType;
+use PHPStan\Type\ConditionalTypeForParameter;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function array_key_exists;
+use function count;
+use function sprintf;
+use function substr;
+
+final class ConditionalReturnTypeRuleHelper
+{
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(ExtendedParametersAcceptor $acceptor): array
+	{
+		$conditionalTypes = [];
+		$parametersByName = [];
+		foreach ($acceptor->getParameters() as $parameter) {
+			TypeTraverser::map($parameter->getType(), static function (Type $type, callable $traverse) use (&$conditionalTypes): Type {
+				if ($type instanceof ConditionalType || $type instanceof ConditionalTypeForParameter) {
+					$conditionalTypes[] = $type;
+				}
+
+				return $traverse($type);
+			});
+
+			if ($parameter->getOutType() !== null) {
+				TypeTraverser::map($parameter->getOutType(), static function (Type $type, callable $traverse) use (&$conditionalTypes): Type {
+					if ($type instanceof ConditionalType || $type instanceof ConditionalTypeForParameter) {
+						$conditionalTypes[] = $type;
+					}
+
+					return $traverse($type);
+				});
+			}
+
+			if ($parameter->getClosureThisType() !== null) {
+				TypeTraverser::map($parameter->getClosureThisType(), static function (Type $type, callable $traverse) use (&$conditionalTypes): Type {
+					if ($type instanceof ConditionalType || $type instanceof ConditionalTypeForParameter) {
+						$conditionalTypes[] = $type;
+					}
+
+					return $traverse($type);
+				});
+			}
+
+			$parametersByName[$parameter->getName()] = $parameter;
+		}
+
+		TypeTraverser::map($acceptor->getReturnType(), static function (Type $type, callable $traverse) use (&$conditionalTypes): Type {
+			if ($type instanceof ConditionalType || $type instanceof ConditionalTypeForParameter) {
+				$conditionalTypes[] = $type;
+			}
+
+			return $traverse($type);
+		});
+
+		$errors = [];
+		foreach ($conditionalTypes as $conditionalType) {
+			if ($conditionalType instanceof ConditionalType) {
+				$subjectType = $conditionalType->getSubject();
+				if ($subjectType instanceof StaticType) {
+					continue;
+				}
+				$templateTypes = [];
+				TypeTraverser::map($subjectType, static function (Type $type, callable $traverse) use (&$templateTypes): Type {
+					if ($type instanceof TemplateType) {
+						$templateTypes[] = $type;
+						return $type;
+					}
+
+					return $traverse($type);
+				});
+
+				if (count($templateTypes) === 0) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Conditional return type uses subject type %s which is not part of PHPDoc @template tags.', $subjectType->describe(VerbosityLevel::typeOnly())))
+						->identifier('conditionalType.subjectNotFound')
+						->build();
+					continue;
+				}
+			} else {
+				$parameterName = substr($conditionalType->getParameterName(), 1);
+				if (!array_key_exists($parameterName, $parametersByName)) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Conditional return type references unknown parameter $%s.', $parameterName))
+						->identifier('parameter.notFound')
+						->build();
+					continue;
+				}
+				$subjectType = $parametersByName[$parameterName]->getType();
+			}
+
+			$targetType = $conditionalType->getTarget();
+			$isTargetSuperType = $targetType->isSuperTypeOf($subjectType);
+			if ($isTargetSuperType->maybe()) {
+				continue;
+			}
+
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($subjectType, $targetType);
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Condition "%s" in conditional return type is always %s.',
+				sprintf('%s %s %s', $subjectType->describe($verbosity), $conditionalType->isNegated() ? 'is not' : 'is', $targetType->describe($verbosity)),
+				$conditionalType->isNegated()
+					? ($isTargetSuperType->yes() ? 'false' : 'true')
+					: ($isTargetSuperType->yes() ? 'true' : 'false'),
+			))
+				->identifier(sprintf('conditionalType.always%s', $conditionalType->isNegated()
+					? ($isTargetSuperType->yes() ? 'False' : 'True')
+					: ($isTargetSuperType->yes() ? 'True' : 'False')))
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/FunctionAssertRule.php b/src/Rules/PhpDoc/FunctionAssertRule.php
new file mode 100644
index 00000000..e2029670
--- /dev/null
+++ b/src/Rules/PhpDoc/FunctionAssertRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\Rule;
+use function count;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class FunctionAssertRule implements Rule
+{
+
+	public function __construct(private AssertRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$function = $node->getFunctionReflection();
+		$variants = $function->getVariants();
+		if (count($variants) !== 1) {
+			return [];
+		}
+
+		return $this->helper->check($node->getOriginalNode(), $function, $variants[0]);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/FunctionConditionalReturnTypeRule.php b/src/Rules/PhpDoc/FunctionConditionalReturnTypeRule.php
new file mode 100644
index 00000000..1484a454
--- /dev/null
+++ b/src/Rules/PhpDoc/FunctionConditionalReturnTypeRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Rules\Rule;
+use function count;
+
+/**
+ * @implements Rule<InFunctionNode>
+ */
+final class FunctionConditionalReturnTypeRule implements Rule
+{
+
+	public function __construct(private ConditionalReturnTypeRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$function = $node->getFunctionReflection();
+		$variants = $function->getVariants();
+		if (count($variants) !== 1) {
+			return [];
+		}
+
+		return $this->helper->check($variants[0]);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/GenericCallableRuleHelper.php b/src/Rules/PhpDoc/GenericCallableRuleHelper.php
new file mode 100644
index 00000000..5f76dece
--- /dev/null
+++ b/src/Rules/PhpDoc/GenericCallableRuleHelper.php
@@ -0,0 +1,121 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\Generics\TemplateTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\Generic\TemplateTypeScope;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+use function array_keys;
+use function sprintf;
+
+final class GenericCallableRuleHelper
+{
+
+	public function __construct(
+		private TemplateTypeCheck $templateTypeCheck,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string, TemplateTag> $functionTemplateTags
+	 *
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Node $node,
+		Scope $scope,
+		string $location,
+		Type $callableType,
+		?string $functionName,
+		array $functionTemplateTags,
+		?ClassReflection $classReflection,
+	): array
+	{
+		$errors = [];
+
+		TypeTraverser::map($callableType, function (Type $type, callable $traverse) use (&$errors, $node, $scope, $location, $functionName, $functionTemplateTags, $classReflection) {
+			if (!($type instanceof CallableType || $type instanceof ClosureType)) {
+				return $traverse($type);
+			}
+
+			$typeDescription = $type->describe(VerbosityLevel::precise());
+
+			$errors = $this->templateTypeCheck->check(
+				$scope,
+				$node,
+				TemplateTypeScope::createWithAnonymousFunction(),
+				$type->getTemplateTags(),
+				sprintf('PHPDoc tag %s template of %s cannot have existing class %%s as its name.', $location, $typeDescription),
+				sprintf('PHPDoc tag %s template of %s cannot have existing type alias %%s as its name.', $location, $typeDescription),
+				sprintf('PHPDoc tag %s template %%s of %s has invalid bound type %%s.', $location, $typeDescription),
+				sprintf('PHPDoc tag %s template %%s of %s with bound type %%s is not supported.', $location, $typeDescription),
+				sprintf('PHPDoc tag %s template %%s of %s has invalid default type %%s.', $location, $typeDescription),
+				sprintf('Default type %%s in PHPDoc tag %s template %%s of %s is not subtype of bound type %%s.', $location, $typeDescription),
+				sprintf('PHPDoc tag %s template %%s of %s does not have a default type but follows an optional template %%s.', $location, $typeDescription),
+			);
+
+			$templateTags = $type->getTemplateTags();
+
+			$classDescription = null;
+			if ($classReflection !== null) {
+				$classDescription = $classReflection->getDisplayName();
+			}
+
+			if ($functionName !== null) {
+				$functionDescription = sprintf('function %s', $functionName);
+				if ($classReflection !== null) {
+					$functionDescription = sprintf('method %s::%s', $classDescription, $functionName);
+				}
+
+				foreach (array_keys($functionTemplateTags) as $name) {
+					if (!isset($templateTags[$name])) {
+						continue;
+					}
+
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s template %s of %s shadows @template %s for %s.',
+						$location,
+						$name,
+						$typeDescription,
+						$name,
+						$functionDescription,
+					))->identifier('callable.shadowTemplate')->build();
+				}
+			}
+
+			if ($classReflection !== null) {
+				foreach (array_keys($classReflection->getTemplateTags()) as $name) {
+					if (!isset($templateTags[$name])) {
+						continue;
+					}
+
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s template %s of %s shadows @template %s for class %s.',
+						$location,
+						$name,
+						$typeDescription,
+						$name,
+						$classDescription,
+					))->identifier('callable.shadowTemplate')->build();
+				}
+			}
+
+			return $traverse($type);
+		});
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatibleClassConstantPhpDocTypeRule.php b/src/Rules/PhpDoc/IncompatibleClassConstantPhpDocTypeRule.php
new file mode 100644
index 00000000..3ae6a9b6
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatibleClassConstantPhpDocTypeRule.php
@@ -0,0 +1,139 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class IncompatibleClassConstantPhpDocTypeRule implements Rule
+{
+
+	public function __construct(
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$nativeType = null;
+		if ($node->type !== null) {
+			$nativeType = ParserNodeTypeToPHPStanType::resolve($node->type, $scope->getClassReflection());
+		}
+
+		$errors = [];
+		foreach ($node->consts as $const) {
+			$constantName = $const->name->toString();
+			$errors = array_merge($errors, $this->processSingleConstant($scope->getClassReflection(), $nativeType, $constantName));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleConstant(ClassReflection $classReflection, ?Type $nativeType, string $constantName): array
+	{
+		$constantReflection = $classReflection->getConstant($constantName);
+		$phpDocType = $constantReflection->getPhpDocType();
+		if ($phpDocType === null) {
+			return [];
+		}
+
+		$errors = [];
+		if (
+			$this->unresolvableTypeHelper->containsUnresolvableType($phpDocType)
+		) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @var for constant %s::%s contains unresolvable type.',
+				$constantReflection->getDeclaringClass()->getName(),
+				$constantName,
+			))->identifier('classConstant.unresolvableType')->build();
+		} elseif ($nativeType !== null) {
+			$isSuperType = $nativeType->isSuperTypeOf($phpDocType);
+			if ($isSuperType->no()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @var for constant %s::%s with type %s is incompatible with native type %s.',
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+					$constantName,
+					$phpDocType->describe(VerbosityLevel::typeOnly()),
+					$nativeType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('classConstant.phpDocType')->build();
+
+			} elseif ($isSuperType->maybe()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @var for constant %s::%s with type %s is not subtype of native type %s.',
+					$constantReflection->getDeclaringClass()->getDisplayName(),
+					$constantName,
+					$phpDocType->describe(VerbosityLevel::typeOnly()),
+					$nativeType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('classConstant.phpDocType')->build();
+			}
+		}
+
+		$className = SprintfHelper::escapeFormatString($constantReflection->getDeclaringClass()->getDisplayName());
+		$escapedConstantName = SprintfHelper::escapeFormatString($constantName);
+
+		return array_merge($errors, $this->genericObjectTypeCheck->check(
+			$phpDocType,
+			sprintf(
+				'PHPDoc tag @var for constant %s::%s contains generic type %%s but %%s %%s is not generic.',
+				$className,
+				$escapedConstantName,
+			),
+			sprintf(
+				'Generic type %%s in PHPDoc tag @var for constant %s::%s does not specify all template types of %%s %%s: %%s',
+				$className,
+				$escapedConstantName,
+			),
+			sprintf(
+				'Generic type %%s in PHPDoc tag @var for constant %s::%s specifies %%d template types, but %%s %%s supports only %%d: %%s',
+				$className,
+				$escapedConstantName,
+			),
+			sprintf(
+				'Type %%s in generic type %%s in PHPDoc tag @var for constant %s::%s is not subtype of template type %%s of %%s %%s.',
+				$className,
+				$escapedConstantName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in PHPDoc tag @var for constant %s::%s is in conflict with %%s template type %%s of %%s %%s.',
+				$className,
+				$escapedConstantName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in PHPDoc tag @var for constant %s::%s is redundant, template type %%s of %%s %%s has the same variance.',
+				$className,
+				$escapedConstantName,
+			),
+		));
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatibleParamImmediatelyInvokedCallableRule.php b/src/Rules/PhpDoc/IncompatibleParamImmediatelyInvokedCallableRule.php
new file mode 100644
index 00000000..f5bcbb2a
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatibleParamImmediatelyInvokedCallableRule.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\FunctionLike;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+use function trim;
+
+/**
+ * @implements Rule<FunctionLike>
+ */
+final class IncompatibleParamImmediatelyInvokedCallableRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionLike::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node instanceof Node\Stmt\ClassMethod) {
+			$functionName = $node->name->name;
+		} elseif ($node instanceof Node\Stmt\Function_) {
+			$functionName = trim($scope->getNamespace() . '\\' . $node->name->name, '\\');
+		} else {
+			return [];
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$functionName,
+			$docComment->getText(),
+		);
+		$nativeParameterTypes = [];
+		foreach ($node->getParams() as $parameter) {
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$nativeParameterTypes[$parameter->var->name] = $scope->getFunctionType(
+				$parameter->type,
+				$scope->isParameterValueNullable($parameter),
+				false,
+			);
+		}
+
+		$errors = [];
+		foreach ($resolvedPhpDoc->getParamsImmediatelyInvokedCallable() as $parameterName => $immediately) {
+			$tagName = $immediately ? '@param-immediately-invoked-callable' : '@param-later-invoked-callable';
+			if (!isset($nativeParameterTypes[$parameterName])) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s references unknown parameter: $%s',
+					$tagName,
+					$parameterName,
+				))->identifier('parameter.notFound')->build();
+			} elseif ($nativeParameterTypes[$parameterName]->isCallable()->no()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s is for parameter $%s with non-callable type %s.',
+					$tagName,
+					$parameterName,
+					$nativeParameterTypes[$parameterName]->describe(VerbosityLevel::typeOnly()),
+				))->identifier(sprintf(
+					'%s.nonCallable',
+					$immediately ? 'paramImmediatelyInvokedCallable' : 'paramLaterInvokedCallable',
+				))->build();
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatiblePhpDocTypeCheck.php b/src/Rules/PhpDoc/IncompatiblePhpDocTypeCheck.php
new file mode 100644
index 00000000..b67f2b6a
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatiblePhpDocTypeCheck.php
@@ -0,0 +1,237 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\Tag\ParamOutTag;
+use PHPStan\PhpDoc\Tag\ParamTag;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function in_array;
+use function sprintf;
+
+final class IncompatiblePhpDocTypeCheck
+{
+
+	public function __construct(
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private GenericCallableRuleHelper $genericCallableRuleHelper,
+	)
+	{
+	}
+
+	/**
+	 * @param array<string, Type> $nativeParameterTypes
+	 * @param array<string, bool> $byRefParameters
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		Scope $scope,
+		Node $node,
+		ResolvedPhpDocBlock $resolvedPhpDoc,
+		string $functionName,
+		array $nativeParameterTypes,
+		array $byRefParameters,
+		Type $nativeReturnType,
+	): array
+	{
+		$errors = [];
+
+		foreach (['@param' => $resolvedPhpDoc->getParamTags(), '@param-out' => $resolvedPhpDoc->getParamOutTags(), '@param-closure-this' => $resolvedPhpDoc->getParamClosureThisTags()] as $tagName => $parameters) {
+			foreach ($parameters as $parameterName => $phpDocParamTag) {
+				$phpDocParamType = $phpDocParamTag->getType();
+
+				if (!isset($nativeParameterTypes[$parameterName])) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s references unknown parameter: $%s',
+						$tagName,
+						$parameterName,
+					))->identifier('parameter.notFound')->build();
+
+				} elseif (
+					$this->unresolvableTypeHelper->containsUnresolvableType($phpDocParamType)
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag %s for parameter $%s contains unresolvable type.',
+						$tagName,
+						$parameterName,
+					))->identifier('parameter.unresolvableType')->build();
+
+				} else {
+					$nativeParamType = $nativeParameterTypes[$parameterName];
+					if (
+						$phpDocParamTag instanceof ParamTag
+						&& $phpDocParamTag->isVariadic()
+						&& $phpDocParamType->isArray()->yes()
+						&& $nativeParamType->isArray()->no()
+					) {
+						$phpDocParamType = $phpDocParamType->getIterableValueType();
+					}
+
+					$escapedParameterName = SprintfHelper::escapeFormatString($parameterName);
+					$escapedTagName = SprintfHelper::escapeFormatString($tagName);
+
+					$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+						$phpDocParamType,
+						sprintf(
+							'PHPDoc tag %s for parameter $%s contains generic type %%s but %%s %%s is not generic.',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+						sprintf(
+							'Generic type %%s in PHPDoc tag %s for parameter $%s does not specify all template types of %%s %%s: %%s',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+						sprintf(
+							'Generic type %%s in PHPDoc tag %s for parameter $%s specifies %%d template types, but %%s %%s supports only %%d: %%s',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+						sprintf(
+							'Type %%s in generic type %%s in PHPDoc tag %s for parameter $%s is not subtype of template type %%s of %%s %%s.',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+						sprintf(
+							'Call-site variance of %%s in generic type %%s in PHPDoc tag %s for parameter $%s is in conflict with %%s template type %%s of %%s %%s.',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+						sprintf(
+							'Call-site variance of %%s in generic type %%s in PHPDoc tag %s for parameter $%s is redundant, template type %%s of %%s %%s has the same variance.',
+							$escapedTagName,
+							$escapedParameterName,
+						),
+					));
+
+					$errors = array_merge($errors, $this->genericCallableRuleHelper->check(
+						$node,
+						$scope,
+						sprintf('%s for parameter $%s', $escapedTagName, $escapedParameterName),
+						$phpDocParamType,
+						$functionName,
+						$resolvedPhpDoc->getTemplateTags(),
+						$scope->isInClass() ? $scope->getClassReflection() : null,
+					));
+
+					if ($phpDocParamTag instanceof ParamOutTag) {
+						if (!$byRefParameters[$parameterName]) {
+							$errors[] = RuleErrorBuilder::message(sprintf(
+								'Parameter $%s for PHPDoc tag %s is not passed by reference.',
+								$parameterName,
+								$tagName,
+							))->identifier('parameter.notByRef')->build();
+
+						}
+						continue;
+					}
+
+					if (in_array($tagName, ['@param', '@param-out'], true)) {
+						$isParamSuperType = $nativeParamType->isSuperTypeOf($phpDocParamType);
+						if ($isParamSuperType->no()) {
+							$errors[] = RuleErrorBuilder::message(sprintf(
+								'PHPDoc tag %s for parameter $%s with type %s is incompatible with native type %s.',
+								$tagName,
+								$parameterName,
+								$phpDocParamType->describe(VerbosityLevel::typeOnly()),
+								$nativeParamType->describe(VerbosityLevel::typeOnly()),
+							))->identifier('parameter.phpDocType')->build();
+
+						} elseif ($isParamSuperType->maybe()) {
+							$errorBuilder = RuleErrorBuilder::message(sprintf(
+								'PHPDoc tag %s for parameter $%s with type %s is not subtype of native type %s.',
+								$tagName,
+								$parameterName,
+								$phpDocParamType->describe(VerbosityLevel::typeOnly()),
+								$nativeParamType->describe(VerbosityLevel::typeOnly()),
+							))->identifier('parameter.phpDocType');
+							if ($phpDocParamType instanceof TemplateType) {
+								$errorBuilder->tip(sprintf('Write @template %s of %s to fix this.', $phpDocParamType->getName(), $nativeParamType->describe(VerbosityLevel::typeOnly())));
+							}
+
+							$errors[] = $errorBuilder->build();
+						}
+					}
+
+					if ($tagName === '@param-closure-this') {
+						$isNonClosure = (new ClosureType())->isSuperTypeOf($nativeParamType)->no();
+						if ($isNonClosure) {
+							$errors[] = RuleErrorBuilder::message(sprintf(
+								'PHPDoc tag %s is for parameter $%s with non-Closure type %s.',
+								$tagName,
+								$parameterName,
+								$nativeParamType->describe(VerbosityLevel::typeOnly()),
+							))->identifier('paramClosureThis.nonClosure')->build();
+						}
+					}
+				}
+			}
+		}
+
+		if ($resolvedPhpDoc->getReturnTag() !== null) {
+			$phpDocReturnType = $resolvedPhpDoc->getReturnTag()->getType();
+
+			if (
+				$this->unresolvableTypeHelper->containsUnresolvableType($phpDocReturnType)
+			) {
+				$errors[] = RuleErrorBuilder::message('PHPDoc tag @return contains unresolvable type.')->identifier('return.unresolvableType')->build();
+
+			} else {
+				$isReturnSuperType = $nativeReturnType->isSuperTypeOf($phpDocReturnType);
+				$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+					$phpDocReturnType,
+					'PHPDoc tag @return contains generic type %s but %s %s is not generic.',
+					'Generic type %s in PHPDoc tag @return does not specify all template types of %s %s: %s',
+					'Generic type %s in PHPDoc tag @return specifies %d template types, but %s %s supports only %d: %s',
+					'Type %s in generic type %s in PHPDoc tag @return is not subtype of template type %s of %s %s.',
+					'Call-site variance of %s in generic type %s in PHPDoc tag @return is in conflict with %s template type %s of %s %s.',
+					'Call-site variance of %s in generic type %s in PHPDoc tag @return is redundant, template type %s of %s %s has the same variance.',
+				));
+				if ($isReturnSuperType->no()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag @return with type %s is incompatible with native type %s.',
+						$phpDocReturnType->describe(VerbosityLevel::typeOnly()),
+						$nativeReturnType->describe(VerbosityLevel::typeOnly()),
+					))->identifier('return.phpDocType')->build();
+
+				} elseif ($isReturnSuperType->maybe()) {
+					$errorBuilder = RuleErrorBuilder::message(sprintf(
+						'PHPDoc tag @return with type %s is not subtype of native type %s.',
+						$phpDocReturnType->describe(VerbosityLevel::typeOnly()),
+						$nativeReturnType->describe(VerbosityLevel::typeOnly()),
+					))->identifier('return.phpDocType');
+					if ($phpDocReturnType instanceof TemplateType) {
+						$errorBuilder->tip(sprintf('Write @template %s of %s to fix this.', $phpDocReturnType->getName(), $nativeReturnType->describe(VerbosityLevel::typeOnly())));
+					}
+
+					$errors[] = $errorBuilder->build();
+				}
+
+				$errors = array_merge($errors, $this->genericCallableRuleHelper->check(
+					$node,
+					$scope,
+					'@return',
+					$phpDocReturnType,
+					$functionName,
+					$resolvedPhpDoc->getTemplateTags(),
+					$scope->isInClass() ? $scope->getClassReflection() : null,
+				));
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatiblePhpDocTypeRule.php b/src/Rules/PhpDoc/IncompatiblePhpDocTypeRule.php
new file mode 100644
index 00000000..8f9e11e7
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatiblePhpDocTypeRule.php
@@ -0,0 +1,110 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Type;
+use function is_string;
+use function trim;
+
+/**
+ * @implements Rule<Node\FunctionLike>
+ */
+final class IncompatiblePhpDocTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private IncompatiblePhpDocTypeCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\FunctionLike::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node instanceof Node\Stmt\ClassMethod) {
+			$functionName = $node->name->name;
+		} elseif ($node instanceof Node\Stmt\Function_) {
+			$functionName = trim($scope->getNamespace() . '\\' . $node->name->name, '\\');
+		} else {
+			return [];
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$functionName,
+			$docComment->getText(),
+		);
+
+		return $this->check->check(
+			$scope,
+			$node,
+			$resolvedPhpDoc,
+			$functionName,
+			$this->getNativeParameterTypes($node, $scope),
+			$this->getByRefParameters($node),
+			$this->getNativeReturnType($node, $scope),
+		);
+	}
+
+	/**
+	 * @return array<string, Type>
+	 */
+	private function getNativeParameterTypes(Node\FunctionLike $node, Scope $scope): array
+	{
+		$nativeParameterTypes = [];
+		foreach ($node->getParams() as $parameter) {
+			$isNullable = $scope->isParameterValueNullable($parameter);
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$nativeParameterTypes[$parameter->var->name] = $scope->getFunctionType(
+				$parameter->type,
+				$isNullable,
+				false,
+			);
+		}
+
+		return $nativeParameterTypes;
+	}
+
+	/**
+	 * @return array<string, bool>
+	 */
+	private function getByRefParameters(Node\FunctionLike $node): array
+	{
+		$nativeParameterTypes = [];
+		foreach ($node->getParams() as $parameter) {
+			if (!$parameter->var instanceof Variable || !is_string($parameter->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$nativeParameterTypes[$parameter->var->name] = $parameter->byRef;
+		}
+
+		return $nativeParameterTypes;
+	}
+
+	private function getNativeReturnType(Node\FunctionLike $node, Scope $scope): Type
+	{
+		return $scope->getFunctionType($node->getReturnType(), false, false);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatiblePropertyHookPhpDocTypeRule.php b/src/Rules/PhpDoc/IncompatiblePropertyHookPhpDocTypeRule.php
new file mode 100644
index 00000000..6fb33362
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatiblePropertyHookPhpDocTypeRule.php
@@ -0,0 +1,86 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Type;
+
+/**
+ * @implements Rule<InPropertyHookNode>
+ */
+final class IncompatiblePropertyHookPhpDocTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private IncompatiblePhpDocTypeCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InPropertyHookNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$hookReflection = $node->getHookReflection();
+
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$node->getClassReflection()->getName(),
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$hookReflection->getName(),
+			$docComment->getText(),
+		);
+
+		return $this->check->check(
+			$scope,
+			$node,
+			$resolvedPhpDoc,
+			$hookReflection->getName(),
+			$this->getNativeParameterTypes($hookReflection),
+			$this->getByRefParameters($hookReflection),
+			$hookReflection->getNativeReturnType(),
+		);
+	}
+
+	/**
+	 * @return array<string, Type>
+	 */
+	private function getNativeParameterTypes(PhpMethodFromParserNodeReflection $node): array
+	{
+		$parameters = [];
+		foreach ($node->getParameters() as $parameter) {
+			$parameters[$parameter->getName()] = $parameter->getNativeType();
+		}
+
+		return $parameters;
+	}
+
+	/**
+	 * @return array<string, false>
+	 */
+	private function getByRefParameters(PhpMethodFromParserNodeReflection $node): array
+	{
+		$parameters = [];
+		foreach ($node->getParameters() as $parameter) {
+			$parameters[$parameter->getName()] = false;
+		}
+
+		return $parameters;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatiblePropertyPhpDocTypeRule.php b/src/Rules/PhpDoc/IncompatiblePropertyPhpDocTypeRule.php
new file mode 100644
index 00000000..097a12bc
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatiblePropertyPhpDocTypeRule.php
@@ -0,0 +1,154 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class IncompatiblePropertyPhpDocTypeRule implements Rule
+{
+
+	public function __construct(
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private GenericCallableRuleHelper $genericCallableRuleHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$phpDocType = $node->getPhpDocType();
+		if ($phpDocType === null) {
+			return [];
+		}
+
+		$propertyName = $node->getName();
+
+		$description = 'PHPDoc tag @var';
+		if ($node->isPromoted()) {
+			$description = 'PHPDoc type';
+		}
+
+		$classReflection = $node->getClassReflection();
+
+		$messages = [];
+		if (
+			$this->unresolvableTypeHelper->containsUnresolvableType($phpDocType)
+		) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'%s for property %s::$%s contains unresolvable type.',
+				$description,
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))->identifier('property.unresolvableType')->build();
+		}
+
+		$nativeType = $node->getNativeType();
+		if ($nativeType !== null) {
+			$isSuperType = $nativeType->isSuperTypeOf($phpDocType);
+			if ($isSuperType->no()) {
+				$messages[] = RuleErrorBuilder::message(sprintf(
+					'%s for property %s::$%s with type %s is incompatible with native type %s.',
+					$description,
+					$classReflection->getDisplayName(),
+					$propertyName,
+					$phpDocType->describe(VerbosityLevel::typeOnly()),
+					$nativeType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('property.phpDocType')->build();
+
+			} elseif ($isSuperType->maybe()) {
+				$errorBuilder = RuleErrorBuilder::message(sprintf(
+					'%s for property %s::$%s with type %s is not subtype of native type %s.',
+					$description,
+					$classReflection->getDisplayName(),
+					$propertyName,
+					$phpDocType->describe(VerbosityLevel::typeOnly()),
+					$nativeType->describe(VerbosityLevel::typeOnly()),
+				))->identifier('property.phpDocType');
+
+				if ($phpDocType instanceof TemplateType) {
+					$errorBuilder->tip(sprintf('Write @template %s of %s to fix this.', $phpDocType->getName(), $nativeType->describe(VerbosityLevel::typeOnly())));
+				}
+
+				$messages[] = $errorBuilder->build();
+			}
+		}
+
+		$className = SprintfHelper::escapeFormatString($classReflection->getDisplayName());
+		$escapedPropertyName = SprintfHelper::escapeFormatString($propertyName);
+
+		if ($node->isPromoted() === false) {
+			$messages = array_merge($messages, $this->genericCallableRuleHelper->check(
+				$node,
+				$scope,
+				'@var',
+				$phpDocType,
+				null,
+				[],
+				$classReflection,
+			));
+		}
+
+		$messages = array_merge($messages, $this->genericObjectTypeCheck->check(
+			$phpDocType,
+			sprintf(
+				'%s for property %s::$%s contains generic type %%s but %%s %%s is not generic.',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+			sprintf(
+				'Generic type %%s in %s for property %s::$%s does not specify all template types of %%s %%s: %%s',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+			sprintf(
+				'Generic type %%s in %s for property %s::$%s specifies %%d template types, but %%s %%s supports only %%d: %%s',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+			sprintf(
+				'Type %%s in generic type %%s in %s for property %s::$%s is not subtype of template type %%s of %%s %%s.',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in %s for property %s::$%s is in conflict with %%s template type %%s of %%s %%s.',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in %s for property %s::$%s is redundant, template type %%s of %%s %%s has the same variance.',
+				$description,
+				$className,
+				$escapedPropertyName,
+			),
+		));
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/IncompatibleSelfOutTypeRule.php b/src/Rules/PhpDoc/IncompatibleSelfOutTypeRule.php
new file mode 100644
index 00000000..2ec0a35b
--- /dev/null
+++ b/src/Rules/PhpDoc/IncompatibleSelfOutTypeRule.php
@@ -0,0 +1,104 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class IncompatibleSelfOutTypeRule implements Rule
+{
+
+	public function __construct(
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$selfOutType = $method->getSelfOutType();
+
+		if ($selfOutType === null) {
+			return [];
+		}
+
+		$classReflection = $method->getDeclaringClass();
+		$classType = new ObjectType($classReflection->getName(), null, $classReflection);
+
+		$errors = [];
+		if (!$classType->isSuperTypeOf($selfOutType)->yes()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Self-out type %s of method %s::%s is not subtype of %s.',
+				$selfOutType->describe(VerbosityLevel::precise()),
+				$classReflection->getDisplayName(),
+				$method->getName(),
+				$classType->describe(VerbosityLevel::precise()),
+			))->identifier('selfOut.type')->build();
+		}
+
+		if ($method->isStatic()) {
+			$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-self-out is not supported above static method %s::%s().', $classReflection->getName(), $method->getName()))
+				->identifier('selfOut.static')
+				->build();
+		}
+
+		if ($this->unresolvableTypeHelper->containsUnresolvableType($selfOutType)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @phpstan-self-out for method %s::%s() contains unresolvable type.',
+				$classReflection->getDisplayName(),
+				$method->getName(),
+			))->identifier('selfOut.unresolvableType')->build();
+		}
+
+		$escapedTagName = SprintfHelper::escapeFormatString('@phpstan-self-out');
+
+		return array_merge($errors, $this->genericObjectTypeCheck->check(
+			$selfOutType,
+			sprintf(
+				'PHPDoc tag %s contains generic type %%s but %%s %%s is not generic.',
+				$escapedTagName,
+			),
+			sprintf(
+				'Generic type %%s in PHPDoc tag %s does not specify all template types of %%s %%s: %%s',
+				$escapedTagName,
+			),
+			sprintf(
+				'Generic type %%s in PHPDoc tag %s specifies %%d template types, but %%s %%s supports only %%d: %%s',
+				$escapedTagName,
+			),
+			sprintf(
+				'Type %%s in generic type %%s in PHPDoc tag %s is not subtype of template type %%s of %%s %%s.',
+				$escapedTagName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in PHPDoc tag %s is in conflict with %%s template type %%s of %%s %%s.',
+				$escapedTagName,
+			),
+			sprintf(
+				'Call-site variance of %%s in generic type %%s in PHPDoc tag %s is redundant, template type %%s of %%s %%s has the same variance.',
+				$escapedTagName,
+			),
+		));
+	}
+
+}
diff --git a/src/Rules/PhpDoc/InvalidPHPStanDocTagRule.php b/src/Rules/PhpDoc/InvalidPHPStanDocTagRule.php
new file mode 100644
index 00000000..30280937
--- /dev/null
+++ b/src/Rules/PhpDoc/InvalidPHPStanDocTagRule.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\VirtualNode;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\PhpDocParser;
+use PHPStan\PhpDocParser\Parser\TokenIterator;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function in_array;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<NodeAbstract>
+ */
+final class InvalidPHPStanDocTagRule implements Rule
+{
+
+	private const POSSIBLE_PHPSTAN_TAGS = [
+		'@phpstan-param',
+		'@phpstan-param-out',
+		'@phpstan-var',
+		'@phpstan-extends',
+		'@phpstan-implements',
+		'@phpstan-use',
+		'@phpstan-template',
+		'@phpstan-template-contravariant',
+		'@phpstan-template-covariant',
+		'@phpstan-return',
+		'@phpstan-throws',
+		'@phpstan-ignore',
+		'@phpstan-ignore-next-line',
+		'@phpstan-ignore-line',
+		'@phpstan-method',
+		'@phpstan-pure',
+		'@phpstan-impure',
+		'@phpstan-immutable',
+		'@phpstan-type',
+		'@phpstan-import-type',
+		'@phpstan-property',
+		'@phpstan-property-read',
+		'@phpstan-property-write',
+		'@phpstan-consistent-constructor',
+		'@phpstan-assert',
+		'@phpstan-assert-if-true',
+		'@phpstan-assert-if-false',
+		'@phpstan-self-out',
+		'@phpstan-this-out',
+		'@phpstan-allow-private-mutation',
+		'@phpstan-readonly',
+		'@phpstan-readonly-allow-private-mutation',
+		'@phpstan-require-extends',
+		'@phpstan-require-implements',
+		'@phpstan-param-immediately-invoked-callable',
+		'@phpstan-param-later-invoked-callable',
+		'@phpstan-param-closure-this',
+	];
+
+	public function __construct(
+		private Lexer $phpDocLexer,
+		private PhpDocParser $phpDocParser,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NodeAbstract::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		// mirrored with InvalidPhpDocTagValueRule
+		if ($node instanceof VirtualNode) {
+			return [];
+		}
+		if (!$node instanceof Node\Stmt && !$node instanceof Node\PropertyHook) {
+			return [];
+		}
+		if ($node instanceof Node\Stmt\Expression) {
+			if (!$node->expr instanceof Node\Expr\Assign && !$node->expr instanceof Node\Expr\AssignRef) {
+				return [];
+			}
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+		$phpDocString = $docComment->getText();
+		$tokens = new TokenIterator($this->phpDocLexer->tokenize($phpDocString));
+		$phpDocNode = $this->phpDocParser->parse($tokens);
+
+		$errors = [];
+		foreach ($phpDocNode->getTags() as $phpDocTag) {
+			if (!str_starts_with($phpDocTag->name, '@phpstan-')
+				|| in_array($phpDocTag->name, self::POSSIBLE_PHPSTAN_TAGS, true)
+			) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Unknown PHPDoc tag: %s',
+				$phpDocTag->name,
+			))
+				->line(PhpDocLineHelper::detectLine($node, $phpDocTag))
+				->identifier('phpDoc.phpstanTag')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/InvalidPhpDocTagValueRule.php b/src/Rules/PhpDoc/InvalidPhpDocTagValueRule.php
new file mode 100644
index 00000000..38c86789
--- /dev/null
+++ b/src/Rules/PhpDoc/InvalidPhpDocTagValueRule.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\VirtualNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\InvalidTagValueNode;
+use PHPStan\PhpDocParser\Ast\PhpDoc\TypeAliasTagValueNode;
+use PHPStan\PhpDocParser\Ast\Type\InvalidTypeNode;
+use PHPStan\PhpDocParser\Lexer\Lexer;
+use PHPStan\PhpDocParser\Parser\PhpDocParser;
+use PHPStan\PhpDocParser\Parser\TokenIterator;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+use function str_starts_with;
+
+/**
+ * @implements Rule<NodeAbstract>
+ */
+final class InvalidPhpDocTagValueRule implements Rule
+{
+
+	public function __construct(
+		private Lexer $phpDocLexer,
+		private PhpDocParser $phpDocParser,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NodeAbstract::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		// mirrored with InvalidPHPStanDocTagRule
+		if ($node instanceof VirtualNode) {
+			return [];
+		}
+		if (!$node instanceof Node\Stmt && !$node instanceof Node\PropertyHook) {
+			return [];
+		}
+		if ($node instanceof Node\Stmt\Expression) {
+			if (!$node->expr instanceof Node\Expr\Assign && !$node->expr instanceof Node\Expr\AssignRef) {
+				return [];
+			}
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$phpDocString = $docComment->getText();
+		$tokens = new TokenIterator($this->phpDocLexer->tokenize($phpDocString));
+		$phpDocNode = $this->phpDocParser->parse($tokens);
+
+		$errors = [];
+		foreach ($phpDocNode->getTags() as $phpDocTag) {
+			if (str_starts_with($phpDocTag->name, '@phan-') || str_starts_with($phpDocTag->name, '@psalm-')) {
+				continue;
+			}
+
+			if ($phpDocTag->value instanceof TypeAliasTagValueNode) {
+				if (!$phpDocTag->value->type instanceof InvalidTypeNode) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag %s %s has invalid value: %s',
+					$phpDocTag->name,
+					$phpDocTag->value->alias,
+					$phpDocTag->value->type->getException()->getMessage(),
+				))
+					->line(PhpDocLineHelper::detectLine($node, $phpDocTag))
+					->identifier('phpDoc.parseError')->build();
+
+				continue;
+			} elseif (!($phpDocTag->value instanceof InvalidTagValueNode)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag %s has invalid value (%s): %s',
+				$phpDocTag->name,
+				$phpDocTag->value->value,
+				$phpDocTag->value->exception->getMessage(),
+			))
+				->line(PhpDocLineHelper::detectLine($node, $phpDocTag))
+				->identifier('phpDoc.parseError')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/InvalidPhpDocVarTagTypeRule.php b/src/Rules/PhpDoc/InvalidPhpDocVarTagTypeRule.php
new file mode 100644
index 00000000..e4dc50e4
--- /dev/null
+++ b/src/Rules/PhpDoc/InvalidPhpDocVarTagTypeRule.php
@@ -0,0 +1,161 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Generics\GenericObjectTypeCheck;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function array_merge;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt>
+ */
+final class InvalidPhpDocVarTagTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private GenericObjectTypeCheck $genericObjectTypeCheck,
+		private MissingTypehintCheck $missingTypehintCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkMissingVarTagTypehint,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			$node instanceof Node\Stmt\Property
+			|| $node instanceof Node\Stmt\ClassConst
+			|| $node instanceof Node\Stmt\Const_
+		) {
+			return [];
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$function = $scope->getFunction();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$function !== null ? $function->getName() : null,
+			$docComment->getText(),
+		);
+
+		$errors = [];
+		foreach ($resolvedPhpDoc->getVarTags() as $name => $varTag) {
+			$varTagType = $varTag->getType();
+			$identifier = 'PHPDoc tag @var';
+			if (is_string($name)) {
+				$identifier .= sprintf(' for variable $%s', $name);
+			}
+			if (
+				$this->unresolvableTypeHelper->containsUnresolvableType($varTagType)
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf('%s contains unresolvable type.', $identifier))
+					->line($docComment->getStartLine())
+					->identifier('varTag.unresolvableType')
+					->build();
+				continue;
+			}
+
+			if ($this->checkMissingVarTagTypehint) {
+				foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($varTagType) as $iterableType) {
+					$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'%s has no value type specified in iterable type %s.',
+						$identifier,
+						$iterableTypeDescription,
+					))
+						->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+						->identifier('missingType.iterableValue')
+						->build();
+				}
+
+				foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($varTagType) as [$innerName, $genericTypeNames]) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'%s contains generic %s but does not specify its types: %s',
+						$identifier,
+						$innerName,
+						$genericTypeNames,
+					))
+						->identifier('missingType.generics')
+						->build();
+				}
+			}
+
+			$escapedIdentifier = SprintfHelper::escapeFormatString($identifier);
+			$errors = array_merge($errors, $this->genericObjectTypeCheck->check(
+				$varTagType,
+				sprintf('%s contains generic type %%s but %%s %%s is not generic.', $escapedIdentifier),
+				sprintf('Generic type %%s in %s does not specify all template types of %%s %%s: %%s', $escapedIdentifier),
+				sprintf('Generic type %%s in %s specifies %%d template types, but %%s %%s supports only %%d: %%s', $escapedIdentifier),
+				sprintf('Type %%s in generic type %%s in %s is not subtype of template type %%s of %%s %%s.', $escapedIdentifier),
+				sprintf('Call-site variance of %%s in generic type %%s in %s is in conflict with %%s template type %%s of %%s %%s.', $escapedIdentifier),
+				sprintf('Call-site variance of %%s in generic type %%s in %s is redundant, template type %%s of %%s %%s has the same variance.', $escapedIdentifier),
+			));
+
+			$referencedClasses = $varTagType->getReferencedClasses();
+			foreach ($referencedClasses as $referencedClass) {
+				if ($this->reflectionProvider->hasClass($referencedClass)) {
+					if ($this->reflectionProvider->getClass($referencedClass)->isTrait()) {
+						$errors[] = RuleErrorBuilder::message(sprintf(
+							sprintf('%s has invalid type %%s.', $identifier),
+							$referencedClass,
+						))->identifier('varTag.trait')->build();
+					}
+					continue;
+				}
+
+				if ($scope->isInClassExists($referencedClass)) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					sprintf('%s contains unknown class %%s.', $identifier),
+					$referencedClass,
+				))
+					->identifier('class.notFound')
+					->discoveringSymbolsTip()
+					->build();
+			}
+
+			$errors = array_merge(
+				$errors,
+				$this->classCheck->checkClassNames(
+					array_map(static fn (string $class): ClassNameNodePair => new ClassNameNodePair($class, $node), $referencedClasses),
+					$this->checkClassCaseSensitivity,
+				),
+			);
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/InvalidThrowsPhpDocValueRule.php b/src/Rules/PhpDoc/InvalidThrowsPhpDocValueRule.php
new file mode 100644
index 00000000..018d2201
--- /dev/null
+++ b/src/Rules/PhpDoc/InvalidThrowsPhpDocValueRule.php
@@ -0,0 +1,113 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use Throwable;
+use function sprintf;
+
+/**
+ * @implements Rule<NodeAbstract>
+ */
+final class InvalidThrowsPhpDocValueRule implements Rule
+{
+
+	public function __construct(private FileTypeMapper $fileTypeMapper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return NodeAbstract::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node instanceof Node\Stmt) {
+			if ($node instanceof Node\Stmt\Function_ || $node instanceof Node\Stmt\ClassMethod) {
+				return []; // is handled by virtual nodes
+			}
+		} elseif (!$node instanceof InPropertyHookNode) {
+			return [];
+		}
+
+		$docComment = $node->getDocComment();
+		if ($docComment === null) {
+			return [];
+		}
+
+		$functionName = null;
+		if ($scope->getFunction() !== null) {
+			$functionName = $scope->getFunction()->getName();
+		}
+
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$functionName,
+			$docComment->getText(),
+		);
+
+		if ($resolvedPhpDoc->getThrowsTag() === null) {
+			return [];
+		}
+
+		$phpDocThrowsType = $resolvedPhpDoc->getThrowsTag()->getType();
+		if ($phpDocThrowsType->isVoid()->yes()) {
+			return [];
+		}
+
+		if ($this->isThrowsValid($phpDocThrowsType)) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @throws with type %s is not subtype of Throwable',
+				$phpDocThrowsType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('throws.notThrowable')->build(),
+		];
+	}
+
+	private function isThrowsValid(Type $phpDocThrowsType): bool
+	{
+		$throwType = new ObjectType(Throwable::class);
+		if ($phpDocThrowsType instanceof UnionType) {
+			foreach ($phpDocThrowsType->getTypes() as $innerType) {
+				if (!$this->isThrowsValid($innerType)) {
+					return false;
+				}
+			}
+
+			return true;
+		}
+
+		$toIntersectWith = [];
+		foreach ($phpDocThrowsType->getObjectClassReflections() as $classReflection) {
+			if (!$classReflection->isInterface()) {
+				continue;
+			}
+			foreach ($classReflection->getRequireExtendsTags() as $requireExtendsTag) {
+				$toIntersectWith[] = $requireExtendsTag->getType();
+			}
+		}
+
+		return $throwType->isSuperTypeOf(
+			TypeCombinator::intersect($phpDocThrowsType, ...$toIntersectWith),
+		)->yes();
+	}
+
+}
diff --git a/src/Rules/PhpDoc/MethodAssertRule.php b/src/Rules/PhpDoc/MethodAssertRule.php
new file mode 100644
index 00000000..52ed0ee5
--- /dev/null
+++ b/src/Rules/PhpDoc/MethodAssertRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use function count;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MethodAssertRule implements Rule
+{
+
+	public function __construct(private AssertRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$variants = $method->getVariants();
+		if (count($variants) !== 1) {
+			return [];
+		}
+
+		return $this->helper->check($node->getOriginalNode(), $method, $variants[0]);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/MethodConditionalReturnTypeRule.php b/src/Rules/PhpDoc/MethodConditionalReturnTypeRule.php
new file mode 100644
index 00000000..c0f824cd
--- /dev/null
+++ b/src/Rules/PhpDoc/MethodConditionalReturnTypeRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Rules\Rule;
+use function count;
+
+/**
+ * @implements Rule<InClassMethodNode>
+ */
+final class MethodConditionalReturnTypeRule implements Rule
+{
+
+	public function __construct(private ConditionalReturnTypeRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassMethodNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+		$variants = $method->getVariants();
+		if (count($variants) !== 1) {
+			return [];
+		}
+
+		return $this->helper->check($variants[0]);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/PhpDocLineHelper.php b/src/Rules/PhpDoc/PhpDocLineHelper.php
new file mode 100644
index 00000000..b441d3ce
--- /dev/null
+++ b/src/Rules/PhpDoc/PhpDocLineHelper.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node as PhpParserNode;
+use PHPStan\PhpDocParser\Ast\Node as PhpDocNode;
+
+final class PhpDocLineHelper
+{
+
+	/**
+	 * This method returns exact line of e.g. `@param` tag in PHPDoc so that it can be used for precise error reporting
+	 * - exact position is available only when bleedingEdge is enabled
+	 * - otherwise, it falls back to given node start line
+	 */
+	public static function detectLine(PhpParserNode $node, PhpDocNode $phpDocNode): int
+	{
+		$phpDocTagLine = $phpDocNode->getAttribute('startLine');
+		$phpDoc = $node->getDocComment();
+
+		if ($phpDocTagLine === null || $phpDoc === null) {
+			return $node->getStartLine();
+		}
+
+		return $phpDoc->getStartLine() + $phpDocTagLine - 1;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/RequireExtendsCheck.php b/src/Rules/PhpDoc/RequireExtendsCheck.php
new file mode 100644
index 00000000..cdde0dc3
--- /dev/null
+++ b/src/Rules/PhpDoc/RequireExtendsCheck.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\PhpDoc\Tag\RequireExtendsTag;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function count;
+use function sprintf;
+use function strtolower;
+
+final class RequireExtendsCheck
+{
+
+	public function __construct(
+		private ClassNameCheck $classCheck,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	/**
+	 * @param  array<RequireExtendsTag> $extendsTags
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkExtendsTags(Node $node, array $extendsTags): array
+	{
+		$errors = [];
+
+		if (count($extendsTags) > 1) {
+			$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-extends can only be used once.'))
+				->identifier('requireExtends.duplicate')
+				->build();
+		}
+
+		foreach ($extendsTags as $extendsTag) {
+			$type = $extendsTag->getType();
+			if (!$type instanceof ObjectType) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-extends contains non-object type %s.', $type->describe(VerbosityLevel::typeOnly())))
+					->identifier('requireExtends.nonObject')
+					->build();
+				continue;
+			}
+
+			$class = $type->getClassName();
+			$referencedClassReflection = $type->getClassReflection();
+
+			if ($referencedClassReflection === null) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-extends contains unknown class %s.', $class))
+					->discoveringSymbolsTip()
+					->identifier('class.notFound')
+					->build();
+				continue;
+			}
+
+			if (!$referencedClassReflection->isClass()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-extends cannot contain non-class type %s.', $class))
+					->identifier(sprintf('requireExtends.%s', strtolower($referencedClassReflection->getClassTypeDescription())))
+					->build();
+			} elseif ($referencedClassReflection->isFinal()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-extends cannot contain final class %s.', $class))
+					->identifier('requireExtends.finalClass')
+					->build();
+			} else {
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $node),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/RequireExtendsDefinitionClassRule.php b/src/Rules/PhpDoc/RequireExtendsDefinitionClassRule.php
new file mode 100644
index 00000000..cc9d6d79
--- /dev/null
+++ b/src/Rules/PhpDoc/RequireExtendsDefinitionClassRule.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class RequireExtendsDefinitionClassRule implements Rule
+{
+
+	public function __construct(
+		private RequireExtendsCheck $requireExtendsCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$extendsTags = $classReflection->getRequireExtendsTags();
+
+		if (count($extendsTags) === 0) {
+			return [];
+		}
+
+		if (!$classReflection->isInterface()) {
+			return [
+				RuleErrorBuilder::message('PHPDoc tag @phpstan-require-extends is only valid on trait or interface.')
+					->identifier(sprintf('requireExtends.on%s', $classReflection->getClassTypeDescription()))
+					->build(),
+			];
+		}
+
+		return $this->requireExtendsCheck->checkExtendsTags($node, $extendsTags);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/RequireExtendsDefinitionTraitRule.php b/src/Rules/PhpDoc/RequireExtendsDefinitionTraitRule.php
new file mode 100644
index 00000000..8731bcab
--- /dev/null
+++ b/src/Rules/PhpDoc/RequireExtendsDefinitionTraitRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class RequireExtendsDefinitionTraitRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RequireExtendsCheck $requireExtendsCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			$node->namespacedName === null
+			|| !$this->reflectionProvider->hasClass($node->namespacedName->toString())
+		) {
+			return [];
+		}
+
+		$traitReflection = $this->reflectionProvider->getClass($node->namespacedName->toString());
+		$extendsTags = $traitReflection->getRequireExtendsTags();
+
+		return $this->requireExtendsCheck->checkExtendsTags($node, $extendsTags);
+	}
+
+}
diff --git a/src/Rules/PhpDoc/RequireImplementsDefinitionClassRule.php b/src/Rules/PhpDoc/RequireImplementsDefinitionClassRule.php
new file mode 100644
index 00000000..c0dccb79
--- /dev/null
+++ b/src/Rules/PhpDoc/RequireImplementsDefinitionClassRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InClassNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<InClassNode>
+ */
+final class RequireImplementsDefinitionClassRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InClassNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$implementsTags = $classReflection->getRequireImplementsTags();
+
+		if (count($implementsTags) === 0) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('PHPDoc tag @phpstan-require-implements is only valid on trait.')
+				->identifier(sprintf('requireImplements.on%s', $classReflection->getClassTypeDescription()))
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/PhpDoc/RequireImplementsDefinitionTraitRule.php b/src/Rules/PhpDoc/RequireImplementsDefinitionTraitRule.php
new file mode 100644
index 00000000..a04daa3f
--- /dev/null
+++ b/src/Rules/PhpDoc/RequireImplementsDefinitionTraitRule.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Stmt\Trait_>
+ */
+final class RequireImplementsDefinitionTraitRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private bool $checkClassCaseSensitivity,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			$node->namespacedName === null
+			|| !$this->reflectionProvider->hasClass($node->namespacedName->toString())
+		) {
+			return [];
+		}
+
+		$traitReflection = $this->reflectionProvider->getClass($node->namespacedName->toString());
+		$implementsTags = $traitReflection->getRequireImplementsTags();
+
+		$errors = [];
+		foreach ($implementsTags as $implementsTag) {
+			$type = $implementsTag->getType();
+			if (!$type instanceof ObjectType) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-implements contains non-object type %s.', $type->describe(VerbosityLevel::typeOnly())))
+					->identifier('requireImplements.nonObject')
+					->build();
+				continue;
+			}
+
+			$class = $type->getClassName();
+			$referencedClassReflection = $type->getClassReflection();
+			if ($referencedClassReflection === null) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-implements contains unknown class %s.', $class))
+					->discoveringSymbolsTip()
+					->identifier('class.notFound')
+					->build();
+				continue;
+			}
+
+			if (!$referencedClassReflection->isInterface()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('PHPDoc tag @phpstan-require-implements cannot contain non-interface type %s.', $class))
+					->identifier(sprintf('requireImplements.%s', strtolower($referencedClassReflection->getClassTypeDescription())))
+					->build();
+			} else {
+				$errors = array_merge(
+					$errors,
+					$this->classCheck->checkClassNames([
+						new ClassNameNodePair($class, $node),
+					], $this->checkClassCaseSensitivity),
+				);
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/UnresolvableTypeHelper.php b/src/Rules/PhpDoc/UnresolvableTypeHelper.php
new file mode 100644
index 00000000..1e83e9ea
--- /dev/null
+++ b/src/Rules/PhpDoc/UnresolvableTypeHelper.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+
+final class UnresolvableTypeHelper
+{
+
+	public function containsUnresolvableType(Type $type): bool
+	{
+		$containsUnresolvable = false;
+		TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$containsUnresolvable): Type {
+			if ($type instanceof ErrorType) {
+				$containsUnresolvable = true;
+				return $type;
+			}
+			if ($type instanceof NeverType && !$type->isExplicit()) {
+				$containsUnresolvable = true;
+				return $type;
+			}
+
+			return $traverse($type);
+		});
+
+		return $containsUnresolvable;
+	}
+
+}
diff --git a/src/Rules/PhpDoc/VarTagChangedExpressionTypeRule.php b/src/Rules/PhpDoc/VarTagChangedExpressionTypeRule.php
new file mode 100644
index 00000000..1609c248
--- /dev/null
+++ b/src/Rules/PhpDoc/VarTagChangedExpressionTypeRule.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\VarTagChangedExpressionTypeNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<VarTagChangedExpressionTypeNode>
+ */
+final class VarTagChangedExpressionTypeRule implements Rule
+{
+
+	public function __construct(private VarTagTypeRuleHelper $varTagTypeRuleHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return VarTagChangedExpressionTypeNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->varTagTypeRuleHelper->checkExprType($scope, $node->getExpr(), $node->getVarTag()->getType());
+	}
+
+}
diff --git a/src/Rules/PhpDoc/VarTagTypeRuleHelper.php b/src/Rules/PhpDoc/VarTagTypeRuleHelper.php
new file mode 100644
index 00000000..90260867
--- /dev/null
+++ b/src/Rules/PhpDoc/VarTagTypeRuleHelper.php
@@ -0,0 +1,193 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\GetOffsetValueTypeExpr;
+use PHPStan\PhpDoc\Tag\VarTag;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function array_key_exists;
+use function count;
+use function is_string;
+use function sprintf;
+
+final class VarTagTypeRuleHelper
+{
+
+	public function __construct(private bool $checkTypeAgainstPhpDocType, private bool $strictWideningCheck)
+	{
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @param string[] $assignedVariables
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkVarType(Scope $scope, Node\Expr $var, Node\Expr $expr, array $varTags, array $assignedVariables): array
+	{
+		$errors = [];
+
+		if ($var instanceof Expr\Variable && is_string($var->name)) {
+			if (array_key_exists($var->name, $varTags)) {
+				$varTagType = $varTags[$var->name]->getType();
+			} elseif (count($assignedVariables) === 1 && array_key_exists(0, $varTags)) {
+				$varTagType = $varTags[0]->getType();
+			} else {
+				return [];
+			}
+
+			return $this->checkExprType($scope, $expr, $varTagType);
+		} elseif ($var instanceof Expr\List_ || $var instanceof Expr\Array_) {
+			foreach ($var->items as $i => $arrayItem) {
+				if ($arrayItem === null) {
+					continue;
+				}
+				if ($arrayItem->key === null) {
+					$dimExpr = new Node\Scalar\Int_($i);
+				} else {
+					$dimExpr = $arrayItem->key;
+				}
+
+				$itemErrors = $this->checkVarType($scope, $arrayItem->value, new GetOffsetValueTypeExpr($expr, $dimExpr), $varTags, $assignedVariables);
+				foreach ($itemErrors as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function checkExprType(Scope $scope, Node\Expr $expr, Type $varTagType): array
+	{
+		$errors = [];
+		$exprNativeType = $scope->getNativeType($expr);
+		$containsPhpStanType = $this->containsPhpStanType($varTagType);
+		if ($this->shouldVarTagTypeBeReported($expr, $exprNativeType, $varTagType)) {
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($exprNativeType, $varTagType);
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'PHPDoc tag @var with type %s is not subtype of native type %s.',
+				$varTagType->describe($verbosity),
+				$exprNativeType->describe($verbosity),
+			))->identifier('varTag.nativeType')->build();
+		} else {
+			$exprType = $scope->getType($expr);
+			if (
+				$this->shouldVarTagTypeBeReported($expr, $exprType, $varTagType)
+				&& ($this->checkTypeAgainstPhpDocType || $containsPhpStanType)
+			) {
+				$verbosity = VerbosityLevel::getRecommendedLevelByType($exprType, $varTagType);
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @var with type %s is not subtype of type %s.',
+					$varTagType->describe($verbosity),
+					$exprType->describe($verbosity),
+				))->identifier('varTag.type')->build();
+			}
+		}
+
+		if (count($errors) === 0 && $containsPhpStanType) {
+			$exprType = $scope->getType($expr);
+			if (!$exprType->equals($varTagType)) {
+				$verbosity = VerbosityLevel::getRecommendedLevelByType($exprType, $varTagType);
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @var assumes the expression with type %s is always %s but it\'s error-prone and dangerous.',
+					$exprType->describe($verbosity),
+					$varTagType->describe($verbosity),
+				))->identifier('phpstanApi.varTagAssumption')->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	private function containsPhpStanType(Type $type): bool
+	{
+		$classReflections = TypeUtils::toBenevolentUnion($type)->getObjectClassReflections();
+		foreach ($classReflections as $classReflection) {
+			if (!$classReflection->isSubclassOf(Type::class)) {
+				continue;
+			}
+
+			return true;
+		}
+
+		return false;
+	}
+
+	private function shouldVarTagTypeBeReported(Node\Expr $expr, Type $type, Type $varTagType): bool
+	{
+		if ($expr instanceof Expr\Array_) {
+			if ($expr->items === []) {
+				$type = new ArrayType(new MixedType(), new MixedType());
+			}
+
+			return $type->isSuperTypeOf($varTagType)->no();
+		}
+
+		if ($expr instanceof Expr\ConstFetch) {
+			return $type->isSuperTypeOf($varTagType)->no();
+		}
+
+		if ($expr instanceof Node\Scalar) {
+			return $type->isSuperTypeOf($varTagType)->no();
+		}
+
+		if ($expr instanceof Expr\New_) {
+			if ($type instanceof GenericObjectType) {
+				$type = new ObjectType($type->getClassName());
+			}
+		}
+
+		return $this->checkType($type, $varTagType);
+	}
+
+	private function checkType(Type $type, Type $varTagType, int $depth = 0): bool
+	{
+		if ($this->strictWideningCheck) {
+			return !$type->isSuperTypeOf($varTagType)->yes();
+		}
+
+		if ($type->isConstantArray()->yes()) {
+			if ($type->isIterableAtLeastOnce()->no()) {
+				$type = new ArrayType(new MixedType(), new MixedType());
+				return $type->isSuperTypeOf($varTagType)->no();
+			}
+		}
+
+		if ($type->isIterable()->yes() && $varTagType->isIterable()->yes()) {
+			if ($type->isSuperTypeOf($varTagType)->no()) {
+				return true;
+			}
+
+			$innerType = $type->getIterableValueType();
+			$innerVarTagType = $varTagType->getIterableValueType();
+
+			if ($type->equals($innerType) || $varTagType->equals($innerVarTagType)) {
+				return !$innerType->isSuperTypeOf($innerVarTagType)->yes();
+			}
+
+			return $this->checkType($innerType, $innerVarTagType, $depth + 1);
+		}
+
+		if ($type->isConstantValue()->yes() && $depth === 0) {
+			return $type->isSuperTypeOf($varTagType)->no();
+		}
+
+		return !$type->isSuperTypeOf($varTagType)->yes();
+	}
+
+}
diff --git a/src/Rules/PhpDoc/WrongVariableNameInVarTagRule.php b/src/Rules/PhpDoc/WrongVariableNameInVarTagRule.php
new file mode 100644
index 00000000..efa11e61
--- /dev/null
+++ b/src/Rules/PhpDoc/WrongVariableNameInVarTagRule.php
@@ -0,0 +1,415 @@
+<?php 
+
+namespace PHPStan\Rules\PhpDoc;
+return;
+
+use PhpParser\Comment\Doc;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
+use PHPStan\Node\Expr\GetIterableValueTypeExpr;
+use PHPStan\Node\InClassMethodNode;
+use PHPStan\Node\InClassNode;
+use PHPStan\Node\InFunctionNode;
+use PHPStan\Node\VirtualNode;
+use PHPStan\PhpDoc\Tag\VarTag;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function count;
+use function implode;
+use function in_array;
+use function is_int;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt>
+ */
+final class WrongVariableNameInVarTagRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+		private VarTagTypeRuleHelper $varTagTypeRuleHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			$node instanceof Node\Stmt\Property
+			|| $node instanceof Node\Stmt\ClassConst
+			|| $node instanceof Node\Stmt\Const_
+			|| ($node instanceof VirtualNode && !$node instanceof InFunctionNode && !$node instanceof InClassMethodNode && !$node instanceof InClassNode)
+		) {
+			return [];
+		}
+
+		$varTags = [];
+		$function = $scope->getFunction();
+		foreach ($node->getComments() as $comment) {
+			if (!$comment instanceof Doc) {
+				continue;
+			}
+			$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+				$scope->getFile(),
+				$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+				$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+				$function !== null ? $function->getName() : null,
+				$comment->getText(),
+			);
+			foreach ($resolvedPhpDoc->getVarTags() as $key => $varTag) {
+				$varTags[$key] = $varTag;
+			}
+		}
+
+		if (count($varTags) === 0) {
+			return [];
+		}
+
+		if ($node instanceof Node\Stmt\Foreach_) {
+			return $this->processForeach($scope, $node->expr, $node->keyVar, $node->valueVar, $varTags);
+		}
+
+		if ($node instanceof Node\Stmt\Static_) {
+			return $this->processStatic($scope, $node->vars, $varTags);
+		}
+
+		if ($node instanceof Node\Stmt\Expression) {
+			if ($node->expr instanceof Expr\Throw_) {
+				return $this->processStmt($scope, $varTags, $node->expr);
+			}
+			return $this->processExpression($scope, $node->expr, $varTags);
+		}
+
+		if ($node instanceof Node\Stmt\Return_) {
+			return $this->processStmt($scope, $varTags, $node->expr);
+		}
+
+		if ($node instanceof Node\Stmt\Global_) {
+			return $this->processGlobal($scope, $node, $varTags);
+		}
+
+		if ($node instanceof InClassNode || $node instanceof InClassMethodNode || $node instanceof InFunctionNode) {
+			$description = 'a function';
+			$originalNode = $node->getOriginalNode();
+			if ($originalNode instanceof Node\Stmt\Interface_) {
+				$description = 'an interface';
+			} elseif ($originalNode instanceof Node\Stmt\Class_) {
+				$description = 'a class';
+			} elseif ($originalNode instanceof Node\Stmt\Enum_) {
+				$description = 'an enum';
+			} elseif ($originalNode instanceof Node\Stmt\Trait_) {
+				throw new ShouldNotHappenException();
+			} elseif ($originalNode instanceof Node\Stmt\ClassMethod) {
+				$description = 'a method';
+			}
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'PHPDoc tag @var above %s has no effect.',
+					$description,
+				))->identifier('varTag.misplaced')->build(),
+			];
+		}
+
+		return $this->processStmt($scope, $varTags, null);
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processAssign(Scope $scope, Node\Expr $var, Node\Expr $expr, array $varTags): array
+	{
+		$errors = [];
+		$hasMultipleMessage = false;
+		$assignedVariables = $this->getAssignedVariables($var);
+		foreach (array_keys($varTags) as $key) {
+			if (is_int($key)) {
+				if (count($varTags) !== 1) {
+					if (!$hasMultipleMessage) {
+						$errors[] = RuleErrorBuilder::message('Multiple PHPDoc @var tags above single variable assignment are not supported.')
+							->identifier('varTag.multipleTags')
+							->build();
+						$hasMultipleMessage = true;
+					}
+				} elseif (count($assignedVariables) !== 1) {
+					$errors[] = RuleErrorBuilder::message(
+						'PHPDoc tag @var above assignment does not specify variable name.',
+					)->identifier('varTag.noVariable')->build();
+				}
+				continue;
+			}
+
+			if (!$scope->hasVariableType($key)->no()) {
+				continue;
+			}
+
+			if (in_array($key, $assignedVariables, true)) {
+				continue;
+			}
+
+			if (count($assignedVariables) === 1 && count($varTags) === 1) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Variable $%s in PHPDoc tag @var does not match assigned variable $%s.',
+					$key,
+					$assignedVariables[0],
+				))->identifier('varTag.differentVariable')->build();
+			} else {
+				$errors[] = RuleErrorBuilder::message(sprintf('Variable $%s in PHPDoc tag @var does not exist.', $key))
+					->identifier('varTag.variableNotFound')
+					->build();
+			}
+		}
+
+		if (count($errors) === 0) {
+			foreach ($this->varTagTypeRuleHelper->checkVarType($scope, $var, $expr, $varTags, $assignedVariables) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function getAssignedVariables(Expr $expr): array
+	{
+		if ($expr instanceof Expr\Variable) {
+			if (is_string($expr->name)) {
+				return [$expr->name];
+			}
+
+			return [];
+		}
+
+		if ($expr instanceof Expr\List_) {
+			$names = [];
+			foreach ($expr->items as $item) {
+				if ($item === null) {
+					continue;
+				}
+
+				$names = array_merge($names, $this->getAssignedVariables($item->value));
+			}
+
+			return $names;
+		}
+
+		return [];
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processForeach(Scope $scope, Node\Expr $iterateeExpr, ?Node\Expr $keyVar, Node\Expr $valueVar, array $varTags): array
+	{
+		$variableNames = [];
+		if ($iterateeExpr instanceof Node\Expr\Variable && is_string($iterateeExpr->name)) {
+			$variableNames[] = $iterateeExpr->name;
+		}
+		if ($keyVar instanceof Node\Expr\Variable && is_string($keyVar->name)) {
+			$variableNames[] = $keyVar->name;
+		}
+		$variableNames = array_merge($variableNames, $this->getAssignedVariables($valueVar));
+
+		$errors = [];
+		foreach (array_keys($varTags) as $name) {
+			if (is_int($name)) {
+				if (count($variableNames) === 1) {
+					continue;
+				}
+				$errors[] = RuleErrorBuilder::message(
+					'PHPDoc tag @var above foreach loop does not specify variable name.',
+				)->identifier('varTag.noVariable')->build();
+				continue;
+			}
+
+			if (in_array($name, $variableNames, true)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Variable $%s in PHPDoc tag @var does not match any variable in the foreach loop: %s',
+				$name,
+				implode(', ', array_map(static fn (string $name): string => sprintf('$%s', $name), $variableNames)),
+			))->identifier('varTag.differentVariable')->build();
+		}
+
+		foreach ($this->varTagTypeRuleHelper->checkVarType($scope, $iterateeExpr, $iterateeExpr, $varTags, $variableNames) as $error) {
+			$errors[] = $error;
+		}
+		if ($keyVar !== null) {
+			foreach ($this->varTagTypeRuleHelper->checkVarType($scope, $keyVar, new GetIterableKeyTypeExpr($iterateeExpr), $varTags, $variableNames) as $error) {
+				$errors[] = $error;
+			}
+		}
+		foreach ($this->varTagTypeRuleHelper->checkVarType($scope, $valueVar, new GetIterableValueTypeExpr($iterateeExpr), $varTags, $variableNames) as $error) {
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processExpression(Scope $scope, Expr $expr, array $varTags): array
+	{
+		if ($expr instanceof Node\Expr\Assign || $expr instanceof Node\Expr\AssignRef) {
+			return $this->processAssign($scope, $expr->var, $expr->expr, $varTags);
+		}
+
+		return $this->processStmt($scope, $varTags, null);
+	}
+
+	/**
+	 * @param Node\Stmt\StaticVar[] $vars
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processStatic(Scope $scope, array $vars, array $varTags): array
+	{
+		$variableNames = [];
+		foreach ($vars as $var) {
+			if (!is_string($var->var->name)) {
+				continue;
+			}
+
+			$variableNames[] = $var->var->name;
+		}
+
+		$errors = [];
+		foreach (array_keys($varTags) as $name) {
+			if (is_int($name)) {
+				if (count($vars) === 1) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(
+					'PHPDoc tag @var above multiple static variables does not specify variable name.',
+				)->identifier('varTag.noVariable')->build();
+				continue;
+			}
+
+			if (in_array($name, $variableNames, true)) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Variable $%s in PHPDoc tag @var does not match any static variable: %s',
+				$name,
+				implode(', ', array_map(static fn (string $name): string => sprintf('$%s', $name), $variableNames)),
+			))->identifier('varTag.differentVariable')->build();
+		}
+
+		foreach ($vars as $var) {
+			if ($var->default === null) {
+				continue;
+			}
+			foreach ($this->varTagTypeRuleHelper->checkVarType($scope, $var->var, $var->default, $varTags, $variableNames) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processStmt(Scope $scope, array $varTags, ?Expr $defaultExpr): array
+	{
+		$errors = [];
+
+		$variableLessVarTags = [];
+		foreach ($varTags as $name => $varTag) {
+			if (is_int($name)) {
+				$variableLessVarTags[] = $varTag;
+				continue;
+			}
+
+			if (!$scope->hasVariableType($name)->no()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Variable $%s in PHPDoc tag @var does not exist.', $name))
+				->identifier('varTag.variableNotFound')
+				->build();
+		}
+
+		if (count($variableLessVarTags) !== 1 || $defaultExpr === null) {
+			if (count($variableLessVarTags) > 0) {
+				$errors[] = RuleErrorBuilder::message('PHPDoc tag @var does not specify variable name.')
+					->identifier('varTag.noVariable')
+					->build();
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param VarTag[] $varTags
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processGlobal(Scope $scope, Node\Stmt\Global_ $node, array $varTags): array
+	{
+		$variableNames = [];
+		foreach ($node->vars as $var) {
+			if (!$var instanceof Expr\Variable) {
+				continue;
+			}
+			if (!is_string($var->name)) {
+				continue;
+			}
+
+			$variableNames[$var->name] = true;
+		}
+
+		$errors = [];
+		foreach (array_keys($varTags) as $name) {
+			if (is_int($name)) {
+				if (count($variableNames) === 1) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(
+					'PHPDoc tag @var above multiple global variables does not specify variable name.',
+				)->identifier('varTag.noVariable')->build();
+				continue;
+			}
+
+			if (isset($variableNames[$name])) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Variable $%s in PHPDoc tag @var does not match any global variable: %s',
+				$name,
+				implode(', ', array_map(static fn (string $name): string => sprintf('$%s', $name), array_keys($variableNames))),
+			))->identifier('varTag.differentVariable')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Playground/FunctionNeverRule.php b/src/Rules/Playground/FunctionNeverRule.php
new file mode 100644
index 00000000..65120a5a
--- /dev/null
+++ b/src/Rules/Playground/FunctionNeverRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class FunctionNeverRule implements Rule
+{
+
+	public function __construct(private NeverRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (count($node->getReturnStatements()) > 0) {
+			return [];
+		}
+
+		$function = $node->getFunctionReflection();
+
+		$returnType = $function->getReturnType();
+		$helperResult = $this->helper->shouldReturnNever($node, $returnType);
+		if ($helperResult === false) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Function %s() always %s, it should have return type "never".',
+				$function->getName(),
+				count($helperResult) === 0 ? 'throws an exception' : 'terminates script execution',
+			))->identifier('phpstanPlayground.never')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Playground/MethodNeverRule.php b/src/Rules/Playground/MethodNeverRule.php
new file mode 100644
index 00000000..6185e9e6
--- /dev/null
+++ b/src/Rules/Playground/MethodNeverRule.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class MethodNeverRule implements Rule
+{
+
+	public function __construct(private NeverRuleHelper $helper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (count($node->getReturnStatements()) > 0) {
+			return [];
+		}
+
+		$method = $node->getMethodReflection();
+
+		$returnType = $method->getReturnType();
+		$helperResult = $this->helper->shouldReturnNever($node, $returnType);
+		if ($helperResult === false) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() always %s, it should have return type "never".',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				count($helperResult) === 0 ? 'throws an exception' : 'terminates script execution',
+			))->identifier('phpstanPlayground.never')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Playground/NeverRuleHelper.php b/src/Rules/Playground/NeverRuleHelper.php
new file mode 100644
index 00000000..25670a48
--- /dev/null
+++ b/src/Rules/Playground/NeverRuleHelper.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Node\ReturnStatementsNode;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+
+final class NeverRuleHelper
+{
+
+	/**
+	 * @return list<Node>|false
+	 */
+	public function shouldReturnNever(ReturnStatementsNode $node, Type $returnType): array|false
+	{
+		if ($returnType instanceof NeverType && $returnType->isExplicit()) {
+			return false;
+		}
+
+		if ($node->isGenerator()) {
+			return false;
+		}
+
+		$other = [];
+		foreach ($node->getExecutionEnds() as $executionEnd) {
+			if ($executionEnd->getStatementResult()->isAlwaysTerminating()) {
+				$executionEndNode = $executionEnd->getNode();
+				if (!$executionEndNode instanceof Node\Stmt\Expression) {
+					$other[] = $executionEnd->getNode();
+					continue;
+				}
+
+				if ($executionEndNode->expr instanceof Node\Expr\Throw_) {
+					continue;
+				}
+
+				$other[] = $executionEnd->getNode();
+				continue;
+			}
+
+			return false;
+		}
+
+		return $other;
+	}
+
+}
diff --git a/src/Rules/Playground/NoPhpCodeRule.php b/src/Rules/Playground/NoPhpCodeRule.php
new file mode 100644
index 00000000..e34fce83
--- /dev/null
+++ b/src/Rules/Playground/NoPhpCodeRule.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FileNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+
+/**
+ * @implements Rule<FileNode>
+ */
+final class NoPhpCodeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FileNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (count($node->getNodes()) !== 1) {
+			return [];
+		}
+
+		$html = $node->getNodes()[0];
+		if (!$html instanceof Node\Stmt\InlineHTML) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message('The example does not contain any PHP code. Did you forget the opening <?php tag?')
+				->identifier('phpstanPlayground.noPhp')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Playground/NotAnalysedTraitRule.php b/src/Rules/Playground/NotAnalysedTraitRule.php
new file mode 100644
index 00000000..b4f6860d
--- /dev/null
+++ b/src/Rules/Playground/NotAnalysedTraitRule.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\Traits\TraitDeclarationCollector;
+use PHPStan\Rules\Traits\TraitUseCollector;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class NotAnalysedTraitRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$traitDeclarationData = $node->get(TraitDeclarationCollector::class);
+		$traitUseData = $node->get(TraitUseCollector::class);
+
+		$declaredTraits = [];
+		foreach ($traitDeclarationData as $file => $declaration) {
+			foreach ($declaration as [$name, $line]) {
+				$declaredTraits[strtolower($name)] = [$file, $name, $line];
+			}
+		}
+
+		foreach ($traitUseData as $usedNamesData) {
+			foreach ($usedNamesData as $usedNames) {
+				foreach ($usedNames as $usedName) {
+					unset($declaredTraits[strtolower($usedName)]);
+				}
+			}
+		}
+
+		$errors = [];
+		foreach ($declaredTraits as [$file, $name, $line]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Trait %s is used zero times and is not analysed.',
+				$name,
+			))
+				->identifier('phpstanPlayground.traitUnused')
+				->file($file)
+				->line($line)
+				->tip('See: https://phpstan.org/blog/how-phpstan-analyses-traits')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Playground/PromoteParameterRule.php b/src/Rules/Playground/PromoteParameterRule.php
new file mode 100644
index 00000000..fed4371e
--- /dev/null
+++ b/src/Rules/Playground/PromoteParameterRule.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @template TNodeType of Node
+ * @implements Rule<TNodeType>
+ */
+final class PromoteParameterRule implements Rule
+{
+
+	/**
+	 * @param Rule<TNodeType> $rule
+	 * @param class-string<TNodeType>  $nodeType
+	 */
+	public function __construct(
+		private Rule $rule,
+		private string $nodeType,
+		private bool $parameterValue,
+		private string $parameterName,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return $this->nodeType;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($this->parameterValue) {
+			return [];
+		}
+
+		if ($this->nodeType !== $this->rule->getNodeType()) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($this->rule->processNode($node, $scope) as $error) {
+			$builder = RuleErrorBuilder::message($error->getMessage())
+				->identifier('phpstanPlayground.configParameter')
+				->tip(sprintf('This error would be reported if the <fg=cyan>%s: true</> parameter was enabled in your <fg=cyan>%%configurationFile%%</>.', $this->parameterName));
+			if ($error instanceof LineRuleError) {
+				$builder->line($error->getLine());
+			}
+			$errors[] = $builder->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Playground/StaticVarWithoutTypeRule.php b/src/Rules/Playground/StaticVarWithoutTypeRule.php
new file mode 100644
index 00000000..489daead
--- /dev/null
+++ b/src/Rules/Playground/StaticVarWithoutTypeRule.php
@@ -0,0 +1,82 @@
+<?php 
+
+namespace PHPStan\Rules\Playground;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FileTypeMapper;
+use function count;
+use function is_string;
+
+/**
+ * @implements Rule<Node\Stmt\Static_>
+ */
+final class StaticVarWithoutTypeRule implements Rule
+{
+
+	public function __construct(
+		private FileTypeMapper $fileTypeMapper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Static_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$docComment = $node->getDocComment();
+		$ruleError = RuleErrorBuilder::message('Static variable needs to be typed with PHPDoc @var tag.')
+			->identifier('phpstanPlayground.staticWithoutType')
+			->build();
+		if ($docComment === null) {
+			return [$ruleError];
+		}
+		$variableNames = [];
+		foreach ($node->vars as $var) {
+			if (!is_string($var->var->name)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$variableNames[] = $var->var->name;
+		}
+
+		$function = $scope->getFunction();
+		$resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
+			$scope->getFile(),
+			$scope->isInClass() ? $scope->getClassReflection()->getName() : null,
+			$scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
+			$function !== null ? $function->getName() : null,
+			$docComment->getText(),
+		);
+		$varTags = [];
+		foreach ($resolvedPhpDoc->getVarTags() as $key => $varTag) {
+			$varTags[$key] = $varTag;
+		}
+
+		if (count($varTags) === 0) {
+			return [$ruleError];
+		}
+
+		if (count($variableNames) === 1 && count($varTags) === 1 && isset($varTags[0])) {
+			return [];
+		}
+
+		foreach ($variableNames as $variableName) {
+			if (isset($varTags[$variableName])) {
+				continue;
+			}
+
+			return [$ruleError];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Properties/AccessPrivatePropertyThroughStaticRule.php b/src/Rules/Properties/AccessPrivatePropertyThroughStaticRule.php
new file mode 100644
index 00000000..94139654
--- /dev/null
+++ b/src/Rules/Properties/AccessPrivatePropertyThroughStaticRule.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\StaticPropertyFetch>
+ */
+final class AccessPrivatePropertyThroughStaticRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\StaticPropertyFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\VarLikeIdentifier) {
+			return [];
+		}
+		if (!$node->class instanceof Name) {
+			return [];
+		}
+
+		$propertyName = $node->name->name;
+		$className = $node->class;
+		if ($className->toLowerString() !== 'static') {
+			return [];
+		}
+
+		$classType = $scope->resolveTypeByName($className);
+		if (!$classType->hasProperty($propertyName)->yes()) {
+			return [];
+		}
+
+		$property = $classType->getProperty($propertyName, $scope);
+		if (!$property->isPrivate()) {
+			return [];
+		}
+		if (!$property->isStatic()) {
+			return [];
+		}
+
+		if ($scope->isInClass() && $scope->getClassReflection()->isFinal()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Unsafe access to private property %s::$%s through static::.',
+				$property->getDeclaringClass()->getDisplayName(),
+				$propertyName,
+			))->identifier('staticClassAccess.privateProperty')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Properties/AccessPropertiesCheck.php b/src/Rules/Properties/AccessPropertiesCheck.php
new file mode 100644
index 00000000..f845cfe6
--- /dev/null
+++ b/src/Rules/Properties/AccessPropertiesCheck.php
@@ -0,0 +1,202 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Identifier;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function array_merge;
+use function count;
+use function sprintf;
+
+final class AccessPropertiesCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+		private PhpVersion $phpVersion,
+		private bool $reportMagicProperties,
+		private bool $checkDynamicProperties,
+	)
+	{
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(PropertyFetch $node, Scope $scope, bool $write): array
+	{
+		if ($node->name instanceof Identifier) {
+			$names = [$node->name->name];
+		} else {
+			$names = array_map(static fn (ConstantStringType $type): string => $type->getValue(), $scope->getType($node->name)->getConstantStrings());
+		}
+
+		$errors = [];
+		foreach ($names as $name) {
+			$errors = array_merge($errors, $this->processSingleProperty($scope, $node, $name, $write));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleProperty(Scope $scope, PropertyFetch $node, string $name, bool $write): array
+	{
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $node->var),
+			sprintf('Access to property $%s on an unknown class %%s.', SprintfHelper::escapeFormatString($name)),
+			static fn (Type $type): bool => $type->canAccessProperties()->yes() && $type->hasProperty($name)->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		if ($scope->isInExpressionAssign($node)) {
+			return [];
+		}
+
+		$typeForDescribe = $type;
+		if ($type instanceof StaticType) {
+			$typeForDescribe = $type->getStaticObjectType();
+		}
+
+		if ($type->canAccessProperties()->no() || $type->canAccessProperties()->maybe() && !$scope->isUndefinedExpressionAllowed($node)) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot access property $%s on %s.',
+					$name,
+					$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+				))->identifier('property.nonObject')->build(),
+			];
+		}
+
+		$has = $type->hasProperty($name);
+		if (!$has->no() && $this->canAccessUndefinedProperties($scope, $node)) {
+			return [];
+		}
+
+		if (!$has->yes()) {
+			if ($scope->hasExpressionType($node)->yes()) {
+				return [];
+			}
+
+			$classNames = $type->getObjectClassNames();
+			if (!$this->reportMagicProperties) {
+				foreach ($classNames as $className) {
+					if (!$this->reflectionProvider->hasClass($className)) {
+						continue;
+					}
+
+					$classReflection = $this->reflectionProvider->getClass($className);
+					if (
+						$classReflection->hasNativeMethod('__get')
+						|| $classReflection->hasNativeMethod('__set')
+					) {
+						return [];
+					}
+				}
+			}
+
+			if (count($classNames) === 1) {
+				$propertyClassReflection = $this->reflectionProvider->getClass($classNames[0]);
+				$parentClassReflection = $propertyClassReflection->getParentClass();
+				while ($parentClassReflection !== null) {
+					if ($parentClassReflection->hasProperty($name)) {
+						if ($write) {
+							if ($scope->canWriteProperty($parentClassReflection->getProperty($name, $scope))) {
+								return [];
+							}
+						} elseif ($scope->canReadProperty($parentClassReflection->getProperty($name, $scope))) {
+							return [];
+						}
+
+						return [
+							RuleErrorBuilder::message(sprintf(
+								'Access to private property $%s of parent class %s.',
+								$name,
+								$parentClassReflection->getDisplayName(),
+							))->identifier('property.private')->build(),
+						];
+					}
+
+					$parentClassReflection = $parentClassReflection->getParentClass();
+				}
+			}
+
+			$ruleErrorBuilder = RuleErrorBuilder::message(sprintf(
+				'Access to an undefined property %s::$%s.',
+				$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+				$name,
+			))->identifier('property.notFound');
+			if ($typeResult->getTip() !== null) {
+				$ruleErrorBuilder->tip($typeResult->getTip());
+			} else {
+				$ruleErrorBuilder->tip('Learn more: <fg=cyan>https://phpstan.org/blog/solving-phpstan-access-to-undefined-property</>');
+			}
+
+			return [
+				$ruleErrorBuilder->build(),
+			];
+		}
+
+		$propertyReflection = $type->getProperty($name, $scope);
+		if ($write) {
+			if ($scope->canWriteProperty($propertyReflection)) {
+				return [];
+			}
+		} elseif ($scope->canReadProperty($propertyReflection)) {
+			return [];
+		}
+
+		if (
+			!$this->phpVersion->supportsAsymmetricVisibility()
+			|| !$write
+			|| (!$propertyReflection->isPrivateSet() && !$propertyReflection->isProtectedSet())
+		) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Access to %s property %s::$%s.',
+					$propertyReflection->isPrivate() ? 'private' : 'protected',
+					$type->describe(VerbosityLevel::typeOnly()),
+					$name,
+				))->identifier(sprintf('property.%s', $propertyReflection->isPrivate() ? 'private' : 'protected'))->build(),
+			];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Assign to %s property %s::$%s.',
+				$propertyReflection->isPrivateSet() ? 'private(set)' : 'protected(set)',
+				$type->describe(VerbosityLevel::typeOnly()),
+				$name,
+			))->identifier(sprintf('assign.property%s', $propertyReflection->isPrivateSet() ? 'PrivateSet' : 'ProtectedSet'))->build(),
+		];
+	}
+
+	private function canAccessUndefinedProperties(Scope $scope, Expr $node): bool
+	{
+		return $scope->isUndefinedExpressionAllowed($node) && !$this->checkDynamicProperties;
+	}
+
+}
diff --git a/src/Rules/Properties/AccessPropertiesInAssignRule.php b/src/Rules/Properties/AccessPropertiesInAssignRule.php
new file mode 100644
index 00000000..342e1a50
--- /dev/null
+++ b/src/Rules/Properties/AccessPropertiesInAssignRule.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class AccessPropertiesInAssignRule implements Rule
+{
+
+	public function __construct(private AccessPropertiesCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getPropertyFetch() instanceof Node\Expr\PropertyFetch) {
+			return [];
+		}
+
+		if ($node->isAssignOp()) {
+			return [];
+		}
+
+		return $this->check->check($node->getPropertyFetch(), $scope, true);
+	}
+
+}
diff --git a/src/Rules/Properties/AccessPropertiesRule.php b/src/Rules/Properties/AccessPropertiesRule.php
new file mode 100644
index 00000000..a4ff3463
--- /dev/null
+++ b/src/Rules/Properties/AccessPropertiesRule.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\PropertyFetch;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Expr\PropertyFetch>
+ */
+final class AccessPropertiesRule implements Rule
+{
+
+	public function __construct(private AccessPropertiesCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->check->check($node, $scope, false);
+	}
+
+}
diff --git a/src/Rules/Properties/AccessStaticPropertiesInAssignRule.php b/src/Rules/Properties/AccessStaticPropertiesInAssignRule.php
new file mode 100644
index 00000000..1edb631a
--- /dev/null
+++ b/src/Rules/Properties/AccessStaticPropertiesInAssignRule.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class AccessStaticPropertiesInAssignRule implements Rule
+{
+
+	public function __construct(private AccessStaticPropertiesRule $accessStaticPropertiesRule)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getPropertyFetch() instanceof Node\Expr\StaticPropertyFetch) {
+			return [];
+		}
+
+		if ($node->isAssignOp()) {
+			return [];
+		}
+
+		return $this->accessStaticPropertiesRule->processNode($node->getPropertyFetch(), $scope);
+	}
+
+}
diff --git a/src/Rules/Properties/AccessStaticPropertiesRule.php b/src/Rules/Properties/AccessStaticPropertiesRule.php
new file mode 100644
index 00000000..5b669795
--- /dev/null
+++ b/src/Rules/Properties/AccessStaticPropertiesRule.php
@@ -0,0 +1,245 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\NullsafeOperatorHelper;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\ThisType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function array_merge;
+use function count;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\StaticPropertyFetch>
+ */
+final class AccessStaticPropertiesRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RuleLevelHelper $ruleLevelHelper,
+		private ClassNameCheck $classCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return StaticPropertyFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->name instanceof Node\VarLikeIdentifier) {
+			$names = [$node->name->name];
+		} else {
+			$names = array_map(static fn (ConstantStringType $type): string => $type->getValue(), $scope->getType($node->name)->getConstantStrings());
+		}
+
+		$errors = [];
+		foreach ($names as $name) {
+			$errors = array_merge($errors, $this->processSingleProperty($scope, $node, $name));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleProperty(Scope $scope, StaticPropertyFetch $node, string $name): array
+	{
+		$messages = [];
+		if ($node->class instanceof Name) {
+			$class = (string) $node->class;
+			$lowercasedClass = strtolower($class);
+			if (in_array($lowercasedClass, ['self', 'static'], true)) {
+				if (!$scope->isInClass()) {
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'Accessing %s::$%s outside of class scope.',
+							$class,
+							$name,
+						))->identifier(sprintf('outOfClass.%s', $lowercasedClass))->build(),
+					];
+				}
+				$classType = $scope->resolveTypeByName($node->class);
+			} elseif ($lowercasedClass === 'parent') {
+				if (!$scope->isInClass()) {
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'Accessing %s::$%s outside of class scope.',
+							$class,
+							$name,
+						))->identifier('outOfClass.parent')->build(),
+					];
+				}
+				if ($scope->getClassReflection()->getParentClass() === null) {
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'%s::%s() accesses parent::$%s but %s does not extend any class.',
+							$scope->getClassReflection()->getDisplayName(),
+							$scope->getFunctionName(),
+							$name,
+							$scope->getClassReflection()->getDisplayName(),
+						))->identifier('class.noParent')->build(),
+					];
+				}
+
+				$classType = $scope->resolveTypeByName($node->class);
+			} else {
+				if (!$this->reflectionProvider->hasClass($class)) {
+					if ($scope->isInClassExists($class)) {
+						return [];
+					}
+
+					return [
+						RuleErrorBuilder::message(sprintf(
+							'Access to static property $%s on an unknown class %s.',
+							$name,
+							$class,
+						))
+							->discoveringSymbolsTip()
+							->identifier('class.notFound')
+							->build(),
+					];
+				}
+
+				$messages = $this->classCheck->checkClassNames([new ClassNameNodePair($class, $node->class)]);
+
+				$classType = $scope->resolveTypeByName($node->class);
+			}
+		} else {
+			$classTypeResult = $this->ruleLevelHelper->findTypeToCheck(
+				$scope,
+				NullsafeOperatorHelper::getNullsafeShortcircuitedExprRespectingScope($scope, $node->class),
+				sprintf('Access to static property $%s on an unknown class %%s.', SprintfHelper::escapeFormatString($name)),
+				static fn (Type $type): bool => $type->canAccessProperties()->yes() && $type->hasProperty($name)->yes(),
+			);
+			$classType = $classTypeResult->getType();
+			if ($classType instanceof ErrorType) {
+				return $classTypeResult->getUnknownClassErrors();
+			}
+		}
+
+		if ($classType->isString()->yes()) {
+			return [];
+		}
+
+		$typeForDescribe = $classType;
+		if ($classType instanceof ThisType) {
+			$typeForDescribe = $classType->getStaticObjectType();
+		}
+		$classType = TypeCombinator::remove($classType, new StringType());
+
+		if ($scope->isInExpressionAssign($node)) {
+			return [];
+		}
+
+		if ($classType->canAccessProperties()->no() || $classType->canAccessProperties()->maybe() && !$scope->isUndefinedExpressionAllowed($node)) {
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot access static property $%s on %s.',
+					$name,
+					$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+				))->identifier('staticProperty.nonObject')->build(),
+			]);
+		}
+
+		$has = $classType->hasProperty($name);
+		if (!$has->no() && $scope->isUndefinedExpressionAllowed($node)) {
+			return [];
+		}
+
+		if (!$has->yes()) {
+			if ($scope->hasExpressionType($node)->yes()) {
+				return $messages;
+			}
+
+			$classNames = $classType->getObjectClassNames();
+			if (count($classNames) === 1) {
+				$propertyClassReflection = $this->reflectionProvider->getClass($classNames[0]);
+				$parentClassReflection = $propertyClassReflection->getParentClass();
+
+				while ($parentClassReflection !== null) {
+					if ($parentClassReflection->hasProperty($name)) {
+						if ($scope->canReadProperty($parentClassReflection->getProperty($name, $scope))) {
+							return [];
+						}
+						return [
+							RuleErrorBuilder::message(sprintf(
+								'Access to private static property $%s of parent class %s.',
+								$name,
+								$parentClassReflection->getDisplayName(),
+							))->identifier('staticProperty.private')->build(),
+						];
+					}
+
+					$parentClassReflection = $parentClassReflection->getParentClass();
+				}
+			}
+
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Access to an undefined static property %s::$%s.',
+					$typeForDescribe->describe(VerbosityLevel::typeOnly()),
+					$name,
+				))->identifier('staticProperty.notFound')->build(),
+			]);
+		}
+
+		$property = $classType->getProperty($name, $scope);
+		if (!$property->isStatic()) {
+			$hasPropertyTypes = TypeUtils::getHasPropertyTypes($classType);
+			foreach ($hasPropertyTypes as $hasPropertyType) {
+				if ($hasPropertyType->getPropertyName() === $name) {
+					return [];
+				}
+			}
+
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Static access to instance property %s::$%s.',
+					$property->getDeclaringClass()->getDisplayName(),
+					$name,
+				))->identifier('property.staticAccess')->build(),
+			]);
+		}
+
+		if (!$scope->canReadProperty($property)) {
+			return array_merge($messages, [
+				RuleErrorBuilder::message(sprintf(
+					'Access to %s property $%s of class %s.',
+					$property->isPrivate() ? 'private' : 'protected',
+					$name,
+					$property->getDeclaringClass()->getDisplayName(),
+				))->identifier(sprintf('staticProperty.%s', $property->isPrivate() ? 'private' : 'protected'))->build(),
+			]);
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Properties/DefaultValueTypesAssignedToPropertiesRule.php b/src/Rules/Properties/DefaultValueTypesAssignedToPropertiesRule.php
new file mode 100644
index 00000000..4ff0333d
--- /dev/null
+++ b/src/Rules/Properties/DefaultValueTypesAssignedToPropertiesRule.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class DefaultValueTypesAssignedToPropertiesRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$default = $node->getDefault();
+		if ($default === null) {
+			return [];
+		}
+
+		$classReflection = $node->getClassReflection();
+
+		$propertyReflection = $classReflection->getNativeProperty($node->getName());
+		$propertyType = $propertyReflection->getWritableType();
+		if (!$propertyReflection->hasNativeType()) {
+			if ($default instanceof Node\Expr\ConstFetch && $default->name->toLowerString() === 'null') {
+				return [];
+			}
+		}
+		$defaultValueType = $scope->getType($default);
+		$accepts = $this->ruleLevelHelper->accepts($propertyType, $defaultValueType, true);
+		if ($accepts->result) {
+			return [];
+		}
+
+		$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($propertyType, $defaultValueType);
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'%s %s::$%s (%s) does not accept default value of type %s.',
+				$node->isStatic() ? 'Static property' : 'Property',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+				$propertyType->describe($verbosityLevel),
+				$defaultValueType->describe($verbosityLevel),
+			))
+				->identifier('property.defaultValue')
+				->acceptsReasonsTip($accepts->reasons)
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Properties/DirectReadWritePropertiesExtensionProvider.php b/src/Rules/Properties/DirectReadWritePropertiesExtensionProvider.php
new file mode 100644
index 00000000..28fc2815
--- /dev/null
+++ b/src/Rules/Properties/DirectReadWritePropertiesExtensionProvider.php
@@ -0,0 +1,24 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+final class DirectReadWritePropertiesExtensionProvider implements ReadWritePropertiesExtensionProvider
+{
+
+	/**
+	 * @param ReadWritePropertiesExtension[] $extensions
+	 */
+	public function __construct(private array $extensions)
+	{
+	}
+
+	/**
+	 * @return ReadWritePropertiesExtension[]
+	 */
+	public function getExtensions(): array
+	{
+		return $this->extensions;
+	}
+
+}
diff --git a/src/Rules/Properties/ExistingClassesInPropertiesRule.php b/src/Rules/Properties/ExistingClassesInPropertiesRule.php
new file mode 100644
index 00000000..db179208
--- /dev/null
+++ b/src/Rules/Properties/ExistingClassesInPropertiesRule.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\ClassNameCheck;
+use PHPStan\Rules\ClassNameNodePair;
+use PHPStan\Rules\PhpDoc\UnresolvableTypeHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_map;
+use function array_merge;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class ExistingClassesInPropertiesRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private ClassNameCheck $classCheck,
+		private UnresolvableTypeHelper $unresolvableTypeHelper,
+		private PhpVersion $phpVersion,
+		private bool $checkClassCaseSensitivity,
+		private bool $checkThisOnly,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyReflection = $node->getClassReflection()->getNativeProperty($node->getName());
+		if ($this->checkThisOnly) {
+			$referencedClasses = $propertyReflection->getNativeType()->getReferencedClasses();
+		} else {
+			$referencedClasses = array_merge(
+				$propertyReflection->getNativeType()->getReferencedClasses(),
+				$propertyReflection->getPhpDocType()->getReferencedClasses(),
+			);
+		}
+
+		$errors = [];
+		foreach ($referencedClasses as $referencedClass) {
+			if ($this->reflectionProvider->hasClass($referencedClass)) {
+				if ($this->reflectionProvider->getClass($referencedClass)->isTrait()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Property %s::$%s has invalid type %s.',
+						$propertyReflection->getDeclaringClass()->getDisplayName(),
+						$node->getName(),
+						$referencedClass,
+					))->identifier('property.trait')->build();
+				}
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s has unknown class %s as its type.',
+				$propertyReflection->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+				$referencedClass,
+			))->identifier('class.notFound')->discoveringSymbolsTip()->build();
+		}
+
+		$errors = array_merge(
+			$errors,
+			$this->classCheck->checkClassNames(
+				array_map(static fn (string $class): ClassNameNodePair => new ClassNameNodePair($class, $node), $referencedClasses),
+				$this->checkClassCaseSensitivity,
+			),
+		);
+
+		if (
+			$this->phpVersion->supportsPureIntersectionTypes()
+			&& $this->unresolvableTypeHelper->containsUnresolvableType($propertyReflection->getNativeType())
+		) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s has unresolvable native type.',
+				$propertyReflection->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.unresolvableNativeType')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ExistingClassesInPropertyHookTypehintsRule.php b/src/Rules/Properties/ExistingClassesInPropertyHookTypehintsRule.php
new file mode 100644
index 00000000..61e714bf
--- /dev/null
+++ b/src/Rules/Properties/ExistingClassesInPropertyHookTypehintsRule.php
@@ -0,0 +1,88 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\SprintfHelper;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Rules\FunctionDefinitionCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\ShouldNotHappenException;
+use function sprintf;
+use function ucfirst;
+
+/**
+ * @implements Rule<InPropertyHookNode>
+ */
+final class ExistingClassesInPropertyHookTypehintsRule implements Rule
+{
+
+	public function __construct(private FunctionDefinitionCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InPropertyHookNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$hookReflection = $node->getHookReflection();
+		if (!$hookReflection->isPropertyHook()) {
+			throw new ShouldNotHappenException();
+		}
+		$className = SprintfHelper::escapeFormatString($node->getClassReflection()->getDisplayName());
+		$hookName = $hookReflection->getPropertyHookName();
+		$propertyName = SprintfHelper::escapeFormatString($hookReflection->getHookedPropertyName());
+
+		$originalHookNode = $node->getOriginalNode();
+		if ($hookReflection->getPropertyHookName() === 'set' && $originalHookNode->params === []) {
+			$originalHookNode = clone $originalHookNode;
+			$originalHookNode->params = [
+				new Node\Param(new Variable('value'), null, null),
+			];
+		}
+
+		return $this->check->checkClassMethod(
+			$hookReflection,
+			$originalHookNode,
+			sprintf(
+				'Parameter $%%s of %s hook for property %s::$%s has invalid type %%s.',
+				$hookName,
+				$className,
+				$propertyName,
+			),
+			sprintf(
+				'%s hook for property %s::$%s has invalid return type %%s.',
+				ucfirst($hookName),
+				$className,
+				$propertyName,
+			),
+			sprintf('%s hook for property %s::$%s uses native union types but they\'re supported only on PHP 8.0 and later.', $hookName, $className, $propertyName),
+			sprintf('Template type %%s of %s hook for property %s::$%s is not referenced in a parameter.', $hookName, $className, $propertyName),
+			sprintf(
+				'Parameter $%%s of %s hook for property %s::$%s has unresolvable native type.',
+				$hookName,
+				$className,
+				$propertyName,
+			),
+			sprintf(
+				'%s hook for property %s::$%s has unresolvable native return type.',
+				ucfirst($hookName),
+				$className,
+				$propertyName,
+			),
+			sprintf(
+				'%s hook for property %s::$%s has invalid @phpstan-self-out type %%s.',
+				ucfirst($hookName),
+				$className,
+				$propertyName,
+			),
+		);
+	}
+
+}
diff --git a/src/Rules/Properties/FoundPropertyReflection.php b/src/Rules/Properties/FoundPropertyReflection.php
new file mode 100644
index 00000000..49228105
--- /dev/null
+++ b/src/Rules/Properties/FoundPropertyReflection.php
@@ -0,0 +1,182 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+use PHPStan\Reflection\WrapperPropertyReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+final class FoundPropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function __construct(
+		private ExtendedPropertyReflection $originalPropertyReflection,
+		private Scope $scope,
+		private string $propertyName,
+		private Type $readableType,
+		private Type $writableType,
+	)
+	{
+	}
+
+	public function getScope(): Scope
+	{
+		return $this->scope;
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		return $this->originalPropertyReflection->getDeclaringClass();
+	}
+
+	public function getName(): string
+	{
+		return $this->propertyName;
+	}
+
+	public function isStatic(): bool
+	{
+		return $this->originalPropertyReflection->isStatic();
+	}
+
+	public function isPrivate(): bool
+	{
+		return $this->originalPropertyReflection->isPrivate();
+	}
+
+	public function isPublic(): bool
+	{
+		return $this->originalPropertyReflection->isPublic();
+	}
+
+	public function getDocComment(): ?string
+	{
+		return $this->originalPropertyReflection->getDocComment();
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return $this->originalPropertyReflection->hasPhpDocType();
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->originalPropertyReflection->getPhpDocType();
+	}
+
+	public function hasNativeType(): bool
+	{
+		return $this->originalPropertyReflection->hasNativeType();
+	}
+
+	public function getNativeType(): Type
+	{
+		return $this->originalPropertyReflection->getNativeType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->readableType;
+	}
+
+	public function getWritableType(): Type
+	{
+		return $this->writableType;
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return $this->originalPropertyReflection->canChangeTypeAfterAssignment();
+	}
+
+	public function isReadable(): bool
+	{
+		return $this->originalPropertyReflection->isReadable();
+	}
+
+	public function isWritable(): bool
+	{
+		return $this->originalPropertyReflection->isWritable();
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return $this->originalPropertyReflection->isDeprecated();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return $this->originalPropertyReflection->getDeprecatedDescription();
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return $this->originalPropertyReflection->isInternal();
+	}
+
+	public function isNative(): bool
+	{
+		return $this->getNativeReflection() !== null;
+	}
+
+	public function getNativeReflection(): ?PhpPropertyReflection
+	{
+		$reflection = $this->originalPropertyReflection;
+		while ($reflection instanceof WrapperPropertyReflection) {
+			$reflection = $reflection->getOriginalReflection();
+		}
+
+		if (!$reflection instanceof PhpPropertyReflection) {
+			return null;
+		}
+
+		return $reflection;
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return $this->originalPropertyReflection->isAbstract();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return $this->originalPropertyReflection->isFinal();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return $this->originalPropertyReflection->isVirtual();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return $this->originalPropertyReflection->hasHook($hookType);
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		return $this->originalPropertyReflection->getHook($hookType);
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return $this->originalPropertyReflection->isProtectedSet();
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return $this->originalPropertyReflection->isPrivateSet();
+	}
+
+	public function getAttributes(): array
+	{
+		return $this->originalPropertyReflection->getAttributes();
+	}
+
+}
diff --git a/src/Rules/Properties/GetNonVirtualPropertyHookReadRule.php b/src/Rules/Properties/GetNonVirtualPropertyHookReadRule.php
new file mode 100644
index 00000000..413133e1
--- /dev/null
+++ b/src/Rules/Properties/GetNonVirtualPropertyHookReadRule.php
@@ -0,0 +1,129 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Node\Property\PropertyRead;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_key_exists;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class GetNonVirtualPropertyHookReadRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$reads = [];
+		$classReflection = $node->getClassReflection();
+		foreach ($node->getPropertyUsages() as $propertyUsage) {
+			if (!$propertyUsage instanceof PropertyRead) {
+				continue;
+			}
+
+			$fetch = $propertyUsage->getFetch();
+			if (!$fetch instanceof Node\Expr\PropertyFetch) {
+				continue;
+			}
+
+			if (!$fetch->name instanceof Node\Identifier) {
+				continue;
+			}
+
+			$propertyName = $fetch->name->toString();
+			if (!$fetch->var instanceof Node\Expr\Variable || $fetch->var->name !== 'this') {
+				continue;
+			}
+
+			$usageScope = $propertyUsage->getScope();
+			$inFunction = $usageScope->getFunction();
+			if (!$inFunction instanceof PhpMethodFromParserNodeReflection) {
+				continue;
+			}
+
+			if (!$inFunction->isPropertyHook()) {
+				continue;
+			}
+
+			if ($inFunction->getPropertyHookName() !== 'get') {
+				continue;
+			}
+
+			if ($propertyName !== $inFunction->getHookedPropertyName()) {
+				continue;
+			}
+
+			$reads[$propertyName] = true;
+		}
+
+		$errors = [];
+		foreach ($node->getProperties() as $propertyNode) {
+			$hasGetHook = false;
+			foreach ($propertyNode->getHooks() as $hook) {
+				if ($hook->name->toLowerString() !== 'get') {
+					continue;
+				}
+
+				$hasGetHook = true;
+				break;
+			}
+
+			if (!$hasGetHook) {
+				continue;
+			}
+
+			if (array_key_exists($propertyNode->getName(), $reads)) {
+				continue;
+			}
+
+			$propertyReflection = $classReflection->getNativeProperty($propertyNode->getName());
+			if ($propertyReflection->isVirtual()->yes()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Get hook for non-virtual property %s::$%s does not read its value.',
+				$classReflection->getDisplayName(),
+				$propertyNode->getName(),
+			))
+				->line($this->getGetHookLine($propertyNode))
+				->identifier('propertyGetHook.noRead')
+				->build();
+		}
+
+		return $errors;
+	}
+
+	private function getGetHookLine(ClassPropertyNode $propertyNode): int
+	{
+		$getHook = null;
+		foreach ($propertyNode->getHooks() as $hook) {
+			if ($hook->name->toLowerString() !== 'get') {
+				continue;
+			}
+
+			$getHook = $hook;
+			break;
+		}
+
+		if ($getHook === null) {
+			return $propertyNode->getStartLine();
+		}
+
+		return $getHook->getStartLine();
+	}
+
+}
diff --git a/src/Rules/Properties/InvalidCallablePropertyTypeRule.php b/src/Rules/Properties/InvalidCallablePropertyTypeRule.php
new file mode 100644
index 00000000..2e2ecdbc
--- /dev/null
+++ b/src/Rules/Properties/InvalidCallablePropertyTypeRule.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class InvalidCallablePropertyTypeRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$propertyReflection = $classReflection->getNativeProperty($node->getName());
+
+		if (!$propertyReflection->hasNativeType()) {
+			return [];
+		}
+
+		$nativeType = $propertyReflection->getNativeType();
+		$callableTypes = [];
+
+		TypeTraverser::map($nativeType, static function (Type $type, callable $traverse) use (&$callableTypes): Type {
+			if ($type instanceof UnionType || $type instanceof IntersectionType) {
+				return $traverse($type);
+			}
+
+			if ($type instanceof CallableType) {
+				$callableTypes[] = $type;
+			}
+
+			return $type;
+		});
+
+		if ($callableTypes === []) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s cannot have callable in its type declaration.',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.callableType')->nonIgnorable()->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Properties/LazyReadWritePropertiesExtensionProvider.php b/src/Rules/Properties/LazyReadWritePropertiesExtensionProvider.php
new file mode 100644
index 00000000..c167db63
--- /dev/null
+++ b/src/Rules/Properties/LazyReadWritePropertiesExtensionProvider.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyReadWritePropertiesExtensionProvider implements ReadWritePropertiesExtensionProvider
+{
+
+	/** @var ReadWritePropertiesExtension[]|null */
+	private ?array $extensions = null;
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getExtensions(): array
+	{
+		if ($this->extensions === null) {
+			$this->extensions = $this->container->getServicesByTag(ReadWritePropertiesExtensionProvider::EXTENSION_TAG);
+		}
+
+		return $this->extensions;
+	}
+
+}
diff --git a/src/Rules/Properties/MissingPropertyTypehintRule.php b/src/Rules/Properties/MissingPropertyTypehintRule.php
new file mode 100644
index 00000000..e9850b33
--- /dev/null
+++ b/src/Rules/Properties/MissingPropertyTypehintRule.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class MissingPropertyTypehintRule implements Rule
+{
+
+	public function __construct(private MissingTypehintCheck $missingTypehintCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyReflection = $node->getClassReflection()->getNativeProperty($node->getName());
+
+		if ($propertyReflection->isPromoted()) {
+			return [];
+		}
+
+		$propertyType = $propertyReflection->getReadableType();
+
+		if ($propertyType instanceof MixedType && !$propertyType->isExplicitMixed()) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Property %s::$%s has no type specified.',
+					$propertyReflection->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('missingType.property')->build(),
+			];
+		}
+
+		$messages = [];
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($propertyType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s type has no value type specified in iterable type %s.',
+				$propertyReflection->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($propertyType) as [$name, $genericTypeNames]) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s with generic %s does not specify its types: %s',
+				$propertyReflection->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($propertyType) as $callableType) {
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s type has no signature specified for %s.',
+				$propertyReflection->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Properties/MissingReadOnlyByPhpDocPropertyAssignRule.php b/src/Rules/Properties/MissingReadOnlyByPhpDocPropertyAssignRule.php
new file mode 100644
index 00000000..5fd4db8e
--- /dev/null
+++ b/src/Rules/Properties/MissingReadOnlyByPhpDocPropertyAssignRule.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Reflection\ConstructorsHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class MissingReadOnlyByPhpDocPropertyAssignRule implements Rule
+{
+
+	public function __construct(
+		private ConstructorsHelper $constructorsHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		[$properties, $prematureAccess, $additionalAssigns] = $node->getUninitializedProperties($scope, $this->constructorsHelper->getConstructors($classReflection));
+
+		$errors = [];
+		foreach ($properties as $propertyName => $propertyNode) {
+			if (!$propertyNode->isReadOnlyByPhpDoc() || $propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Class %s has an uninitialized @readonly property $%s. Assign it in the constructor.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($propertyNode->getStartLine())
+				->identifier('property.uninitializedReadonlyByPhpDoc')
+				->build();
+		}
+
+		foreach ($prematureAccess as [$propertyName, $line, $propertyNode, $file, $fileDescription]) {
+			if (!$propertyNode->isReadOnlyByPhpDoc() || $propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Access to an uninitialized @readonly property %s::$%s.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->identifier('property.uninitializedReadonlyByPhpDoc')
+				->line($line)
+				->file($file, $fileDescription)
+				->build();
+		}
+
+		foreach ($additionalAssigns as [$propertyName, $line, $propertyNode]) {
+			if (!$propertyNode->isReadOnlyByPhpDoc() || $propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'@readonly property %s::$%s is already assigned.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))->identifier('assign.readOnlyPropertyByPhpDoc')->line($line)->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/MissingReadOnlyPropertyAssignRule.php b/src/Rules/Properties/MissingReadOnlyPropertyAssignRule.php
new file mode 100644
index 00000000..d70a3521
--- /dev/null
+++ b/src/Rules/Properties/MissingReadOnlyPropertyAssignRule.php
@@ -0,0 +1,83 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Reflection\ConstructorsHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class MissingReadOnlyPropertyAssignRule implements Rule
+{
+
+	public function __construct(
+		private ConstructorsHelper $constructorsHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		[$properties, $prematureAccess, $additionalAssigns] = $node->getUninitializedProperties($scope, $this->constructorsHelper->getConstructors($classReflection));
+
+		$errors = [];
+		foreach ($properties as $propertyName => $propertyNode) {
+			if (!$propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Class %s has an uninitialized readonly property $%s. Assign it in the constructor.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($propertyNode->getStartLine())
+				->identifier('property.uninitializedReadonly')
+				->build();
+		}
+
+		foreach ($prematureAccess as [$propertyName, $line, $propertyNode, $file, $fileDescription]) {
+			if (!$propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Access to an uninitialized readonly property %s::$%s.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($line)
+				->file($file, $fileDescription)
+				->identifier('property.uninitializedReadonly')
+				->build();
+		}
+
+		foreach ($additionalAssigns as [$propertyName, $line, $propertyNode]) {
+			if (!$propertyNode->isReadOnly()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Readonly property %s::$%s is already assigned.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($line)
+				->identifier('assign.readOnlyProperty')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/NullsafePropertyFetchRule.php b/src/Rules/Properties/NullsafePropertyFetchRule.php
new file mode 100644
index 00000000..4cdf51d4
--- /dev/null
+++ b/src/Rules/Properties/NullsafePropertyFetchRule.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\NullsafePropertyFetch>
+ */
+final class NullsafePropertyFetchRule implements Rule
+{
+
+	public function __construct()
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\NullsafePropertyFetch::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$calledOnType = $scope->getType($node->var);
+		if (!$calledOnType->isNull()->no()) {
+			return [];
+		}
+
+		if ($scope->isUndefinedExpressionAllowed($node)) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf('Using nullsafe property access on non-nullable type %s. Use -> instead.', $calledOnType->describe(VerbosityLevel::typeOnly())))
+				->identifier('nullsafe.neverNull')
+				->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Properties/OverridingPropertyRule.php b/src/Rules/Properties/OverridingPropertyRule.php
new file mode 100644
index 00000000..7e30b3f3
--- /dev/null
+++ b/src/Rules/Properties/OverridingPropertyRule.php
@@ -0,0 +1,346 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\PhpPropertyReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class OverridingPropertyRule implements Rule
+{
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private bool $checkPhpDocMethodSignatures,
+		private bool $reportMaybes,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		$prototype = $this->findPrototype($classReflection, $node->getName());
+		if ($prototype === null) {
+			return [];
+		}
+
+		$errors = [];
+		if ($prototype->isStatic()) {
+			if (!$node->isStatic()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Non-static property %s::$%s overrides static property %s::$%s.',
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('property.nonStatic')->nonIgnorable()->build();
+			}
+		} elseif ($node->isStatic()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Static property %s::$%s overrides non-static property %s::$%s.',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.static')->nonIgnorable()->build();
+		}
+
+		if ($prototype->isReadOnly()) {
+			if (!$node->isReadOnly()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Readwrite property %s::$%s overrides readonly property %s::$%s.',
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('property.readWrite')->nonIgnorable()->build();
+			}
+		} elseif ($node->isReadOnly()) {
+			if (
+				!$this->phpVersion->supportsPropertyHooks()
+				|| $prototype->isWritable()
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Readonly property %s::$%s overrides readwrite property %s::$%s.',
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('property.readOnly')->nonIgnorable()->build();
+			}
+		}
+
+		$propertyReflection = $classReflection->getNativeProperty($node->getName());
+		if ($this->phpVersion->supportsPropertyHooks()) {
+			if ($prototype->isReadable()) {
+				if (!$propertyReflection->isReadable()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Property %s::$%s overriding readable property %s::$%s also has to be readable.',
+						$classReflection->getDisplayName(),
+						$node->getName(),
+						$prototype->getDeclaringClass()->getDisplayName(),
+						$node->getName(),
+					))->identifier('property.notReadable')->nonIgnorable()->build();
+				}
+			}
+			if ($prototype->isWritable()) {
+				if (!$propertyReflection->isWritable()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'Property %s::$%s overriding writable property %s::$%s also has to be writable.',
+						$classReflection->getDisplayName(),
+						$node->getName(),
+						$prototype->getDeclaringClass()->getDisplayName(),
+						$node->getName(),
+					))->identifier('property.notWritable')->nonIgnorable()->build();
+				}
+			}
+		}
+
+		if ($prototype->isPublic()) {
+			if (!$node->isPublic()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s property %s::$%s overriding public property %s::$%s should also be public.',
+					$node->isPrivate() ? 'Private' : 'Protected',
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('property.visibility')->nonIgnorable()->build();
+			}
+		} elseif ($node->isPrivate()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Private property %s::$%s overriding protected property %s::$%s should be protected or public.',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.visibility')->nonIgnorable()->build();
+		}
+
+		if ($prototype->isFinal()->yes()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s overrides final property %s::$%s.',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.parentPropertyFinal')
+				->nonIgnorable()
+				->build();
+		}
+
+		$typeErrors = [];
+		$nativeType = $node->getNativeType();
+		if ($prototype->hasNativeType()) {
+			if ($nativeType === null) {
+				$typeErrors[] = RuleErrorBuilder::message(sprintf(
+					'Property %s::$%s overriding property %s::$%s (%s) should also have native type %s.',
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+					$prototype->getNativeType()->describe(VerbosityLevel::typeOnly()),
+					$prototype->getNativeType()->describe(VerbosityLevel::typeOnly()),
+				))->identifier('property.missingNativeType')->nonIgnorable()->build();
+			} else {
+				if (!$prototype->getNativeType()->equals($nativeType)) {
+					if (
+						$this->phpVersion->supportsPropertyHooks()
+						&& ($prototype->isVirtual()->yes() || $prototype->isAbstract()->yes())
+						&& (!$prototype->isReadable() || !$prototype->isWritable())
+					) {
+						if (!$prototype->isReadable()) {
+							if (!$nativeType->isSuperTypeOf($prototype->getNativeType())->yes()) {
+								$typeErrors[] = RuleErrorBuilder::message(sprintf(
+									'Type %s of property %s::$%s is not contravariant with type %s of overridden property %s::$%s.',
+									$nativeType->describe(VerbosityLevel::typeOnly()),
+									$classReflection->getDisplayName(),
+									$node->getName(),
+									$prototype->getNativeType()->describe(VerbosityLevel::typeOnly()),
+									$prototype->getDeclaringClass()->getDisplayName(),
+									$node->getName(),
+								))->identifier('property.nativeType')->nonIgnorable()->build();
+							}
+						} elseif (!$prototype->getNativeType()->isSuperTypeOf($nativeType)->yes()) {
+							$typeErrors[] = RuleErrorBuilder::message(sprintf(
+								'Type %s of property %s::$%s is not covariant with type %s of overridden property %s::$%s.',
+								$nativeType->describe(VerbosityLevel::typeOnly()),
+								$classReflection->getDisplayName(),
+								$node->getName(),
+								$prototype->getNativeType()->describe(VerbosityLevel::typeOnly()),
+								$prototype->getDeclaringClass()->getDisplayName(),
+								$node->getName(),
+							))->identifier('property.nativeType')->nonIgnorable()->build();
+						}
+					} else {
+						$typeErrors[] = RuleErrorBuilder::message(sprintf(
+							'Type %s of property %s::$%s is not the same as type %s of overridden property %s::$%s.',
+							$nativeType->describe(VerbosityLevel::typeOnly()),
+							$classReflection->getDisplayName(),
+							$node->getName(),
+							$prototype->getNativeType()->describe(VerbosityLevel::typeOnly()),
+							$prototype->getDeclaringClass()->getDisplayName(),
+							$node->getName(),
+						))->identifier('property.nativeType')->nonIgnorable()->build();
+					}
+				}
+			}
+		} elseif ($nativeType !== null) {
+			$typeErrors[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s (%s) overriding property %s::$%s should not have a native type.',
+				$classReflection->getDisplayName(),
+				$node->getName(),
+				$nativeType->describe(VerbosityLevel::typeOnly()),
+				$prototype->getDeclaringClass()->getDisplayName(),
+				$node->getName(),
+			))->identifier('property.extraNativeType')->nonIgnorable()->build();
+		}
+
+		$errors = array_merge($errors, $typeErrors);
+
+		if (!$this->checkPhpDocMethodSignatures) {
+			return $errors;
+		}
+
+		if (count($typeErrors) > 0) {
+			return $errors;
+		}
+
+		if ($prototype->getReadableType()->equals($propertyReflection->getReadableType())) {
+			return $errors;
+		}
+
+		$verbosity = VerbosityLevel::getRecommendedLevelByType($prototype->getReadableType(), $propertyReflection->getReadableType());
+
+		if (
+			$this->phpVersion->supportsPropertyHooks()
+			&& ($prototype->isVirtual()->yes() || $prototype->isAbstract()->yes())
+			&& (!$prototype->isReadable() || !$prototype->isWritable())
+		) {
+			if (!$prototype->isReadable()) {
+				if (!$propertyReflection->getReadableType()->isSuperTypeOf($prototype->getReadableType())->yes()) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'PHPDoc type %s of property %s::$%s is not contravariant with PHPDoc type %s of overridden property %s::$%s.',
+						$propertyReflection->getReadableType()->describe($verbosity),
+						$classReflection->getDisplayName(),
+						$node->getName(),
+						$prototype->getReadableType()->describe($verbosity),
+						$prototype->getDeclaringClass()->getDisplayName(),
+						$node->getName(),
+					))->identifier('property.phpDocType')->tip(sprintf(
+						"You can fix 3rd party PHPDoc types with stub files:\n   %s",
+						'<fg=cyan>https://phpstan.org/user-guide/stub-files</>',
+					))->build();
+				}
+			} elseif (!$prototype->getReadableType()->isSuperTypeOf($propertyReflection->getReadableType())->yes()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'PHPDoc type %s of property %s::$%s is not covariant with PHPDoc type %s of overridden property %s::$%s.',
+					$propertyReflection->getReadableType()->describe($verbosity),
+					$classReflection->getDisplayName(),
+					$node->getName(),
+					$prototype->getReadableType()->describe($verbosity),
+					$prototype->getDeclaringClass()->getDisplayName(),
+					$node->getName(),
+				))->identifier('property.phpDocType')->tip(sprintf(
+					"You can fix 3rd party PHPDoc types with stub files:\n   %s",
+					'<fg=cyan>https://phpstan.org/user-guide/stub-files</>',
+				))->build();
+			}
+
+			return $errors;
+		}
+
+		$isSuperType = $prototype->getReadableType()->isSuperTypeOf($propertyReflection->getReadableType());
+		$canBeTurnedOffError = RuleErrorBuilder::message(sprintf(
+			'PHPDoc type %s of property %s::$%s is not the same as PHPDoc type %s of overridden property %s::$%s.',
+			$propertyReflection->getReadableType()->describe($verbosity),
+			$classReflection->getDisplayName(),
+			$node->getName(),
+			$prototype->getReadableType()->describe($verbosity),
+			$prototype->getDeclaringClass()->getDisplayName(),
+			$node->getName(),
+		))->identifier('property.phpDocType')->tip(sprintf(
+			"You can fix 3rd party PHPDoc types with stub files:\n   %s\n   This error can be turned off by setting\n   %s",
+			'<fg=cyan>https://phpstan.org/user-guide/stub-files</>',
+			'<fg=cyan>reportMaybesInPropertyPhpDocTypes: false</> in your <fg=cyan>%configurationFile%</>.',
+		))->build();
+		$cannotBeTurnedOffError = RuleErrorBuilder::message(sprintf(
+			'PHPDoc type %s of property %s::$%s is %s PHPDoc type %s of overridden property %s::$%s.',
+			$propertyReflection->getReadableType()->describe($verbosity),
+			$classReflection->getDisplayName(),
+			$node->getName(),
+			$this->reportMaybes ? 'not the same as' : 'not covariant with',
+			$prototype->getReadableType()->describe($verbosity),
+			$prototype->getDeclaringClass()->getDisplayName(),
+			$node->getName(),
+		))->identifier('property.phpDocType')->tip(sprintf(
+			"You can fix 3rd party PHPDoc types with stub files:\n   %s",
+			'<fg=cyan>https://phpstan.org/user-guide/stub-files</>',
+		))->build();
+		if ($this->reportMaybes) {
+			if (!$isSuperType->yes()) {
+				$errors[] = $cannotBeTurnedOffError;
+			} else {
+				$errors[] = $canBeTurnedOffError;
+			}
+		} else {
+			if (!$isSuperType->yes()) {
+				$errors[] = $cannotBeTurnedOffError;
+			}
+		}
+
+		return $errors;
+	}
+
+	private function findPrototype(ClassReflection $classReflection, string $propertyName): ?PhpPropertyReflection
+	{
+		$parentClass = $classReflection->getParentClass();
+		if ($parentClass === null) {
+			return $this->findPrototypeInInterfaces($classReflection, $propertyName);
+		}
+
+		if (!$parentClass->hasNativeProperty($propertyName)) {
+			return $this->findPrototypeInInterfaces($classReflection, $propertyName);
+		}
+
+		$property = $parentClass->getNativeProperty($propertyName);
+		if ($property->isPrivate()) {
+			return $this->findPrototypeInInterfaces($classReflection, $propertyName);
+		}
+
+		return $property;
+	}
+
+	private function findPrototypeInInterfaces(ClassReflection $classReflection, string $propertyName): ?PhpPropertyReflection
+	{
+		foreach ($classReflection->getInterfaces() as $interface) {
+			if (!$interface->hasNativeProperty($propertyName)) {
+				continue;
+			}
+
+			return $interface->getNativeProperty($propertyName);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Rules/Properties/PropertiesInInterfaceRule.php b/src/Rules/Properties/PropertiesInInterfaceRule.php
new file mode 100644
index 00000000..e1907378
--- /dev/null
+++ b/src/Rules/Properties/PropertiesInInterfaceRule.php
@@ -0,0 +1,102 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class PropertiesInInterfaceRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->getClassReflection()->isInterface()) {
+			return [];
+		}
+
+		if (!$this->phpVersion->supportsPropertyHooks()) {
+			return [
+				RuleErrorBuilder::message('Interfaces cannot include properties.')
+					->nonIgnorable()
+					->identifier('property.inInterface')
+					->build(),
+			];
+		}
+
+		if (!$node->hasHooks()) {
+			return [
+				RuleErrorBuilder::message('Interfaces can only include hooked properties.')
+					->nonIgnorable()
+					->identifier('property.nonHookedInInterface')
+					->build(),
+			];
+		}
+
+		if (!$node->isPublic()) {
+			return [
+				RuleErrorBuilder::message('Interfaces cannot include non-public properties.')
+					->nonIgnorable()
+					->identifier('property.nonPublicInInterface')
+					->build(),
+			];
+		}
+
+		if ($node->isReadOnly()) {
+			return [
+				RuleErrorBuilder::message('Interfaces cannot include readonly hooked properties.')
+					->nonIgnorable()
+					->identifier('property.readOnlyInInterface')
+					->build(),
+			];
+		}
+
+		if ($node->isStatic()) {
+			return [
+				RuleErrorBuilder::message('Hooked properties cannot be static.')
+					->nonIgnorable()
+					->identifier('property.hookedStatic')
+					->build(),
+			];
+		}
+
+		if ($this->hasAnyHookBody($node)) {
+			return [
+				RuleErrorBuilder::message('Interfaces cannot include property hooks with bodies.')
+					->nonIgnorable()
+					->identifier('property.hookBodyInInterface')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+	private function hasAnyHookBody(ClassPropertyNode $node): bool
+	{
+		foreach ($node->getHooks() as $hook) {
+			if ($hook->body !== null) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyAssignRefRule.php b/src/Rules/Properties/PropertyAssignRefRule.php
new file mode 100644
index 00000000..10dd2fca
--- /dev/null
+++ b/src/Rules/Properties/PropertyAssignRefRule.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\AssignRef>
+ */
+final class PropertyAssignRefRule implements Rule
+{
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\AssignRef::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$this->phpVersion->supportsAsymmetricVisibility()) {
+			return [];
+		}
+
+		if (!$node->expr instanceof Node\Expr\PropertyFetch) {
+			return [];
+		}
+
+		$propertyFetch = $node->expr;
+
+		$errors = [];
+		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+		foreach ($reflections as $propertyReflection) {
+			$nativeReflection = $propertyReflection->getNativeReflection();
+			if ($nativeReflection === null) {
+				continue;
+			}
+			if ($scope->canWriteProperty($propertyReflection)) {
+				continue;
+			}
+
+			$declaringClass = $nativeReflection->getDeclaringClass();
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Property %s::$%s with %s visibility is assigned by reference.',
+				$declaringClass->getDisplayName(),
+				$propertyReflection->getName(),
+				$propertyReflection->isPrivateSet() ? 'private(set)' : (
+					$propertyReflection->isProtectedSet() ? 'protected(set)' : (
+						$propertyReflection->isPrivate() ? 'private' : 'protected'
+					)
+				),
+			))
+				->identifier('property.assignByRef')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyAttributesRule.php b/src/Rules/Properties/PropertyAttributesRule.php
new file mode 100644
index 00000000..234752d5
--- /dev/null
+++ b/src/Rules/Properties/PropertyAttributesRule.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<Node\Stmt\Property>
+ */
+final class PropertyAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Property::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->attrGroups,
+			Attribute::TARGET_PROPERTY,
+			'property',
+		);
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyDescriptor.php b/src/Rules/Properties/PropertyDescriptor.php
new file mode 100644
index 00000000..118a49d5
--- /dev/null
+++ b/src/Rules/Properties/PropertyDescriptor.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+final class PropertyDescriptor
+{
+
+	/**
+	 * @param Node\Expr\PropertyFetch|Node\Expr\StaticPropertyFetch $propertyFetch
+	 */
+	public function describeProperty(PropertyReflection $property, Scope $scope, $propertyFetch): string
+	{
+		if ($propertyFetch instanceof Node\Expr\PropertyFetch) {
+			$fetchedOnType = $scope->getType($propertyFetch->var);
+			$declaringClassType = new ObjectType($property->getDeclaringClass()->getName());
+			if ($declaringClassType->isSuperTypeOf($fetchedOnType)->yes()) {
+				$classDescription = $property->getDeclaringClass()->getDisplayName();
+			} else {
+				$classDescription = $fetchedOnType->describe(VerbosityLevel::typeOnly());
+			}
+		} else {
+			$classDescription = $property->getDeclaringClass()->getDisplayName();
+		}
+
+		/** @var Node\Identifier $name */
+		$name = $propertyFetch->name;
+		if (!$property->isStatic()) {
+			return sprintf('Property %s::$%s', $classDescription, $name->name);
+		}
+
+		return sprintf('Static property %s::$%s', $classDescription, $name->name);
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyHookAttributesRule.php b/src/Rules/Properties/PropertyHookAttributesRule.php
new file mode 100644
index 00000000..f4d0e371
--- /dev/null
+++ b/src/Rules/Properties/PropertyHookAttributesRule.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+
+/**
+ * @implements Rule<InPropertyHookNode>
+ */
+final class PropertyHookAttributesRule implements Rule
+{
+
+	public function __construct(private AttributesCheck $attributesCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InPropertyHookNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return $this->attributesCheck->check(
+			$scope,
+			$node->getOriginalNode()->attrGroups,
+			Attribute::TARGET_METHOD,
+			'method',
+		);
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyInClassRule.php b/src/Rules/Properties/PropertyInClassRule.php
new file mode 100644
index 00000000..db56243e
--- /dev/null
+++ b/src/Rules/Properties/PropertyInClassRule.php
@@ -0,0 +1,143 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class PropertyInClassRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+
+		if (!$classReflection->isClass()) {
+			return [];
+		}
+
+		if (!$this->phpVersion->supportsPropertyHooks()) {
+			if ($node->hasHooks()) {
+				return [
+					RuleErrorBuilder::message('Property hooks are supported only on PHP 8.4 and later.')
+						->nonIgnorable()
+						->identifier('property.hooksNotSupported')
+						->build(),
+				];
+			}
+
+			return [];
+		}
+
+		if ($node->isAbstract()) {
+			if (!$node->hasHooks()) {
+				return [
+					RuleErrorBuilder::message('Only hooked properties can be declared abstract.')
+						->nonIgnorable()
+						->identifier('property.abstractNonHooked')
+						->build(),
+				];
+			}
+
+			if (!$this->isAtLeastOneHookBodyEmpty($node)) {
+				return [
+					RuleErrorBuilder::message('Abstract properties must specify at least one abstract hook.')
+						->nonIgnorable()
+						->identifier('property.abstractWithoutAbstractHook')
+						->build(),
+				];
+			}
+
+			if (!$classReflection->isAbstract()) {
+				return [
+					RuleErrorBuilder::message('Non-abstract classes cannot include abstract properties.')
+						->nonIgnorable()
+						->identifier('property.abstract')
+						->build(),
+				];
+			}
+		} elseif (!$this->doAllHooksHaveBody($node)) {
+			return [
+				RuleErrorBuilder::message('Non-abstract properties cannot include hooks without bodies.')
+					->nonIgnorable()
+					->identifier('property.hookWithoutBody')
+					->build(),
+			];
+		}
+
+		if ($node->isReadOnly()) {
+			if ($node->hasHooks()) {
+				return [
+					RuleErrorBuilder::message('Hooked properties cannot be readonly.')
+						->nonIgnorable()
+						->identifier('property.hookReadOnly')
+						->build(),
+				];
+			}
+		}
+
+		if ($node->isStatic()) {
+			if ($node->hasHooks()) {
+				return [
+					RuleErrorBuilder::message('Hooked properties cannot be static.')
+						->nonIgnorable()
+						->identifier('property.hookedStatic')
+						->build(),
+				];
+			}
+		}
+
+		if ($node->isVirtual()) {
+			if ($node->getDefault() !== null) {
+				return [
+					RuleErrorBuilder::message('Virtual hooked properties cannot have a default value.')
+						->nonIgnorable()
+						->identifier('property.virtualDefault')
+						->build(),
+				];
+			}
+		}
+
+		return [];
+	}
+
+	private function doAllHooksHaveBody(ClassPropertyNode $node): bool
+	{
+		foreach ($node->getHooks() as $hook) {
+			if ($hook->body === null) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	private function isAtLeastOneHookBodyEmpty(ClassPropertyNode $node): bool
+	{
+		foreach ($node->getHooks() as $hook) {
+			if ($hook->body === null) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+}
diff --git a/src/Rules/Properties/PropertyReflectionFinder.php b/src/Rules/Properties/PropertyReflectionFinder.php
new file mode 100644
index 00000000..ef732c5a
--- /dev/null
+++ b/src/Rules/Properties/PropertyReflectionFinder.php
@@ -0,0 +1,127 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\VarLikeIdentifier;
+use PHPStan\Analyser\Scope;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Type;
+use function array_map;
+
+final class PropertyReflectionFinder
+{
+
+	/**
+	 * @param Node\Expr\PropertyFetch|Node\Expr\StaticPropertyFetch $propertyFetch
+	 * @return FoundPropertyReflection[]
+	 */
+	public function findPropertyReflectionsFromNode($propertyFetch, Scope $scope): array
+	{
+		if ($propertyFetch instanceof Node\Expr\PropertyFetch) {
+			if ($propertyFetch->name instanceof Node\Identifier) {
+				$names = [$propertyFetch->name->name];
+			} else {
+				$names = array_map(static fn (ConstantStringType $name): string => $name->getValue(), $scope->getType($propertyFetch->name)->getConstantStrings());
+			}
+
+			$reflections = [];
+			$propertyHolderType = $scope->getType($propertyFetch->var);
+			foreach ($names as $name) {
+				$reflection = $this->findPropertyReflection(
+					$propertyHolderType,
+					$name,
+					$propertyFetch->name instanceof Expr ? $scope->filterByTruthyValue(new Expr\BinaryOp\Identical(
+						$propertyFetch->name,
+						new String_($name),
+					)) : $scope,
+				);
+				if ($reflection === null) {
+					continue;
+				}
+
+				$reflections[] = $reflection;
+			}
+
+			return $reflections;
+		}
+
+		if ($propertyFetch->class instanceof Node\Name) {
+			$propertyHolderType = $scope->resolveTypeByName($propertyFetch->class);
+		} else {
+			$propertyHolderType = $scope->getType($propertyFetch->class);
+		}
+
+		if ($propertyFetch->name instanceof VarLikeIdentifier) {
+			$names = [$propertyFetch->name->name];
+		} else {
+			$names = array_map(static fn (ConstantStringType $name): string => $name->getValue(), $scope->getType($propertyFetch->name)->getConstantStrings());
+		}
+
+		$reflections = [];
+		foreach ($names as $name) {
+			$reflection = $this->findPropertyReflection(
+				$propertyHolderType,
+				$name,
+				$propertyFetch->name instanceof Expr ? $scope->filterByTruthyValue(new Expr\BinaryOp\Identical(
+					$propertyFetch->name,
+					new String_($name),
+				)) : $scope,
+			);
+			if ($reflection === null) {
+				continue;
+			}
+
+			$reflections[] = $reflection;
+		}
+
+		return $reflections;
+	}
+
+	/**
+	 * @param Node\Expr\PropertyFetch|Node\Expr\StaticPropertyFetch $propertyFetch
+	 */
+	public function findPropertyReflectionFromNode($propertyFetch, Scope $scope): ?FoundPropertyReflection
+	{
+		if ($propertyFetch instanceof Node\Expr\PropertyFetch) {
+			if (!$propertyFetch->name instanceof Node\Identifier) {
+				return null;
+			}
+			$propertyHolderType = $scope->getType($propertyFetch->var);
+			return $this->findPropertyReflection($propertyHolderType, $propertyFetch->name->name, $scope);
+		}
+
+		if (!$propertyFetch->name instanceof Node\Identifier) {
+			return null;
+		}
+
+		if ($propertyFetch->class instanceof Node\Name) {
+			$propertyHolderType = $scope->resolveTypeByName($propertyFetch->class);
+		} else {
+			$propertyHolderType = $scope->getType($propertyFetch->class);
+		}
+
+		return $this->findPropertyReflection($propertyHolderType, $propertyFetch->name->name, $scope);
+	}
+
+	private function findPropertyReflection(Type $propertyHolderType, string $propertyName, Scope $scope): ?FoundPropertyReflection
+	{
+		if (!$propertyHolderType->hasProperty($propertyName)->yes()) {
+			return null;
+		}
+
+		$originalProperty = $propertyHolderType->getProperty($propertyName, $scope);
+
+		return new FoundPropertyReflection(
+			$originalProperty,
+			$scope,
+			$propertyName,
+			$originalProperty->getReadableType(),
+			$originalProperty->getWritableType(),
+		);
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRefRule.php b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRefRule.php
new file mode 100644
index 00000000..98d808ad
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRefRule.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\AssignRef>
+ */
+final class ReadOnlyByPhpDocPropertyAssignRefRule implements Rule
+{
+
+	public function __construct(private PropertyReflectionFinder $propertyReflectionFinder)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\AssignRef::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->expr instanceof Node\Expr\PropertyFetch && !$node->expr instanceof Node\Expr\StaticPropertyFetch) {
+			return [];
+		}
+
+		$propertyFetch = $node->expr;
+
+		$errors = [];
+		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+		foreach ($reflections as $propertyReflection) {
+			$nativeReflection = $propertyReflection->getNativeReflection();
+			if ($nativeReflection === null) {
+				continue;
+			}
+			if (!$scope->canWriteProperty($propertyReflection)) {
+				continue;
+			}
+			if (!$nativeReflection->isReadOnlyByPhpDoc() || $nativeReflection->isReadOnly()) {
+				continue;
+			}
+
+			$declaringClass = $nativeReflection->getDeclaringClass();
+			$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned by reference.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+				->identifier('property.readOnlyByPhpDocAssignByRef')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php
new file mode 100644
index 00000000..21e0b75e
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Reflection\ConstructorsHelper;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\TypeUtils;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class ReadOnlyByPhpDocPropertyAssignRule implements Rule
+{
+
+	public function __construct(
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private ConstructorsHelper $constructorsHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyFetch = $node->getPropertyFetch();
+		if (!$propertyFetch instanceof Node\Expr\PropertyFetch) {
+			return [];
+		}
+
+		$inFunction = $scope->getFunction();
+		if (
+			$inFunction instanceof PhpMethodFromParserNodeReflection
+			&& $inFunction->isPropertyHook()
+			&& $propertyFetch->var instanceof Node\Expr\Variable
+			&& $propertyFetch->var->name === 'this'
+			&& $propertyFetch->name instanceof Node\Identifier
+			&& $inFunction->getHookedPropertyName() === $propertyFetch->name->toString()
+		) {
+			return [];
+		}
+
+		$errors = [];
+		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+		foreach ($reflections as $propertyReflection) {
+			$nativeReflection = $propertyReflection->getNativeReflection();
+			if ($nativeReflection === null) {
+				continue;
+			}
+			if (!$scope->canWriteProperty($propertyReflection)) {
+				continue;
+			}
+			if (!$nativeReflection->isReadOnlyByPhpDoc() || $nativeReflection->isReadOnly()) {
+				continue;
+			}
+
+			$declaringClass = $nativeReflection->getDeclaringClass();
+
+			if (!$scope->isInClass()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+					->identifier('property.readOnlyByPhpDocAssignOutOfClass')
+					->build();
+				continue;
+			}
+
+			$scopeClassReflection = $scope->getClassReflection();
+			if ($scopeClassReflection->getName() !== $declaringClass->getName()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+					->identifier('property.readOnlyByPhpDocAssignOutOfClass')
+					->build();
+				continue;
+			}
+
+			$scopeMethod = $scope->getFunction();
+			if (!$scopeMethod instanceof MethodReflection) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (
+				in_array($scopeMethod->getName(), $this->constructorsHelper->getConstructors($scopeClassReflection), true)
+				|| strtolower($scopeMethod->getName()) === '__unserialize'
+			) {
+				if (TypeUtils::findThisType($scope->getType($propertyFetch->var)) === null) {
+					$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is not assigned on $this.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+						->identifier('property.readOnlyByPhpDocAssignNotOnThis')
+						->build();
+				}
+
+				continue;
+			}
+
+			if ($nativeReflection->isAllowedPrivateMutation()) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of the constructor.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+				->identifier('property.readOnlyByPhpDocAssignNotInConstructor')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyByPhpDocPropertyRule.php b/src/Rules/Properties/ReadOnlyByPhpDocPropertyRule.php
new file mode 100644
index 00000000..917f0f7a
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyByPhpDocPropertyRule.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class ReadOnlyByPhpDocPropertyRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!($node->isReadOnlyByPhpDoc() && !$node->isAllowedPrivateMutation()) || $node->isReadOnly()) {
+			return [];
+		}
+
+		$errors = [];
+		if ($node->getDefault() !== null) {
+			 $errors[] = RuleErrorBuilder::message('@readonly property cannot have a default value.')
+				 ->identifier('property.readOnlyByPhpDocDefaultValue')
+				 ->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyPropertyAssignRefRule.php b/src/Rules/Properties/ReadOnlyPropertyAssignRefRule.php
new file mode 100644
index 00000000..a62c345e
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyPropertyAssignRefRule.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\AssignRef>
+ */
+final class ReadOnlyPropertyAssignRefRule implements Rule
+{
+
+	public function __construct(private PropertyReflectionFinder $propertyReflectionFinder)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\AssignRef::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->expr instanceof Node\Expr\PropertyFetch) {
+			return [];
+		}
+
+		$propertyFetch = $node->expr;
+
+		$errors = [];
+		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+		foreach ($reflections as $propertyReflection) {
+			$nativeReflection = $propertyReflection->getNativeReflection();
+			if ($nativeReflection === null) {
+				continue;
+			}
+			if (!$scope->canWriteProperty($propertyReflection)) {
+				continue;
+			}
+			if (!$nativeReflection->isReadOnly()) {
+				continue;
+			}
+
+			$declaringClass = $nativeReflection->getDeclaringClass();
+			$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned by reference.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+				->identifier('property.readOnlyAssignByRef')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyPropertyAssignRule.php b/src/Rules/Properties/ReadOnlyPropertyAssignRule.php
new file mode 100644
index 00000000..1a9a2fdf
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyPropertyAssignRule.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Reflection\ConstructorsHelper;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\TypeUtils;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class ReadOnlyPropertyAssignRule implements Rule
+{
+
+	public function __construct(
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private ConstructorsHelper $constructorsHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyFetch = $node->getPropertyFetch();
+		if (!$propertyFetch instanceof Node\Expr\PropertyFetch) {
+			return [];
+		}
+
+		$errors = [];
+		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+		foreach ($reflections as $propertyReflection) {
+			$nativeReflection = $propertyReflection->getNativeReflection();
+			if ($nativeReflection === null) {
+				continue;
+			}
+			if (!$scope->canWriteProperty($propertyReflection)) {
+				continue;
+			}
+			if (!$nativeReflection->isReadOnly()) {
+				continue;
+			}
+
+			$declaringClass = $nativeReflection->getDeclaringClass();
+
+			if (!$scope->isInClass()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+					->identifier('property.readOnlyAssignOutOfClass')
+					->build();
+				continue;
+			}
+
+			$scopeClassReflection = $scope->getClassReflection();
+			if ($scopeClassReflection->getName() !== $declaringClass->getName()) {
+				$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+					->identifier('property.readOnlyAssignOutOfClass')
+					->build();
+				continue;
+			}
+
+			$scopeMethod = $scope->getFunction();
+			if (!$scopeMethod instanceof MethodReflection) {
+				throw new ShouldNotHappenException();
+			}
+
+			if (
+				in_array($scopeMethod->getName(), $this->constructorsHelper->getConstructors($scopeClassReflection), true)
+				|| strtolower($scopeMethod->getName()) === '__unserialize'
+			) {
+				if (TypeUtils::findThisType($scope->getType($propertyFetch->var)) === null) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is not assigned on $this.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+						->identifier('property.readOnlyAssignNotOnThis')
+						->build();
+				}
+
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of the constructor.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+				->identifier('property.readOnlyAssignNotInConstructor')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadOnlyPropertyRule.php b/src/Rules/Properties/ReadOnlyPropertyRule.php
new file mode 100644
index 00000000..d239593b
--- /dev/null
+++ b/src/Rules/Properties/ReadOnlyPropertyRule.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<ClassPropertyNode>
+ */
+final class ReadOnlyPropertyRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertyNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->isReadOnly()) {
+			return [];
+		}
+
+		$errors = [];
+		if (!$this->phpVersion->supportsReadOnlyProperties()) {
+			 $errors[] = RuleErrorBuilder::message('Readonly properties are supported only on PHP 8.1 and later.')->nonIgnorable()
+				 ->identifier('property.readOnlyNotSupported')
+				 ->build();
+		}
+
+		if ($node->getNativeType() === null) {
+			 $errors[] = RuleErrorBuilder::message('Readonly property must have a native type.')
+				 ->identifier('property.readOnlyNoNativeType')
+				 ->nonIgnorable()
+				 ->build();
+		}
+
+		if ($node->getDefault() !== null) {
+			 $errors[] = RuleErrorBuilder::message('Readonly property cannot have a default value.')->nonIgnorable()
+				 ->identifier('property.readOnlyDefaultValue')
+				 ->build();
+		}
+
+		if ($node->isStatic()) {
+			$errors[] = RuleErrorBuilder::message('Readonly property cannot be static.')->nonIgnorable()
+				->identifier('property.readOnlyStatic')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/ReadWritePropertiesExtension.php b/src/Rules/Properties/ReadWritePropertiesExtension.php
new file mode 100644
index 00000000..a322a3b5
--- /dev/null
+++ b/src/Rules/Properties/ReadWritePropertiesExtension.php
@@ -0,0 +1,35 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PHPStan\Reflection\ExtendedPropertyReflection;
+
+/**
+ * This is the extension interface to implement if you want to describe
+ * always-read or always-written properties.
+ *
+ * To register it in the configuration file use the `phpstan.properties.readWriteExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.properties.readWriteExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/always-read-written-properties
+ *
+ * @api
+ */
+interface ReadWritePropertiesExtension
+{
+
+	public function isAlwaysRead(ExtendedPropertyReflection $property, string $propertyName): bool;
+
+	public function isAlwaysWritten(ExtendedPropertyReflection $property, string $propertyName): bool;
+
+	public function isInitialized(ExtendedPropertyReflection $property, string $propertyName): bool;
+
+}
diff --git a/src/Rules/Properties/ReadWritePropertiesExtensionProvider.php b/src/Rules/Properties/ReadWritePropertiesExtensionProvider.php
new file mode 100644
index 00000000..06bdecfd
--- /dev/null
+++ b/src/Rules/Properties/ReadWritePropertiesExtensionProvider.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+interface ReadWritePropertiesExtensionProvider
+{
+
+	public const EXTENSION_TAG = 'phpstan.properties.readWriteExtension';
+
+	/**
+	 * @return ReadWritePropertiesExtension[]
+	 */
+	public function getExtensions(): array;
+
+}
diff --git a/src/Rules/Properties/ReadingWriteOnlyPropertiesRule.php b/src/Rules/Properties/ReadingWriteOnlyPropertiesRule.php
new file mode 100644
index 00000000..ab61ceec
--- /dev/null
+++ b/src/Rules/Properties/ReadingWriteOnlyPropertiesRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class ReadingWriteOnlyPropertiesRule implements Rule
+{
+
+	public function __construct(
+		private PropertyDescriptor $propertyDescriptor,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private RuleLevelHelper $ruleLevelHelper,
+		private bool $checkThisOnly,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (
+			!($node instanceof Node\Expr\PropertyFetch)
+			&& !($node instanceof Node\Expr\StaticPropertyFetch)
+		) {
+			return [];
+		}
+
+		if (
+			$node instanceof Node\Expr\PropertyFetch
+			&& $this->checkThisOnly
+			&& !$this->ruleLevelHelper->isThis($node->var)
+		) {
+			return [];
+		}
+
+		if ($scope->isInExpressionAssign($node)) {
+			return [];
+		}
+
+		$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($node, $scope);
+		if ($propertyReflection === null) {
+			return [];
+		}
+		if (!$scope->canReadProperty($propertyReflection)) {
+			return [];
+		}
+
+		if (!$propertyReflection->isReadable()) {
+			$propertyDescription = $this->propertyDescriptor->describeProperty($propertyReflection, $scope, $node);
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'%s is not readable.',
+					$propertyDescription,
+				))
+					->identifier('property.writeOnly')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Properties/SetNonVirtualPropertyHookAssignRule.php b/src/Rules/Properties/SetNonVirtualPropertyHookAssignRule.php
new file mode 100644
index 00000000..0d03e197
--- /dev/null
+++ b/src/Rules/Properties/SetNonVirtualPropertyHookAssignRule.php
@@ -0,0 +1,94 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\PropertyInitializationExpr;
+use PHPStan\Node\PropertyHookReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\NeverType;
+use function sprintf;
+
+/**
+ * @implements Rule<PropertyHookReturnStatementsNode>
+ */
+final class SetNonVirtualPropertyHookAssignRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return PropertyHookReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$hookNode = $node->getPropertyHookNode();
+		if ($hookNode->name->toLowerString() !== 'set') {
+			return [];
+		}
+
+		$hookReflection = $node->getHookReflection();
+		if (!$hookReflection->isPropertyHook()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$propertyName = $hookReflection->getHookedPropertyName();
+		$classReflection = $node->getClassReflection();
+		$propertyReflection = $node->getPropertyReflection();
+		if ($propertyReflection->isVirtual()->yes()) {
+			return [];
+		}
+
+		$finalHookScope = null;
+		foreach ($node->getExecutionEnds() as $executionEnd) {
+			$statementResult = $executionEnd->getStatementResult();
+			$endNode = $executionEnd->getNode();
+			if ($statementResult->isAlwaysTerminating()) {
+				if ($endNode instanceof Node\Stmt\Expression) {
+					$exprType = $statementResult->getScope()->getType($endNode->expr);
+					if ($exprType instanceof NeverType && $exprType->isExplicit()) {
+						continue;
+					}
+				}
+			}
+			if ($finalHookScope === null) {
+				$finalHookScope = $statementResult->getScope();
+				continue;
+			}
+
+			$finalHookScope = $finalHookScope->mergeWith($statementResult->getScope());
+		}
+
+		foreach ($node->getReturnStatements() as $returnStatement) {
+			if ($finalHookScope === null) {
+				$finalHookScope = $returnStatement->getScope();
+				continue;
+			}
+			$finalHookScope = $finalHookScope->mergeWith($returnStatement->getScope());
+		}
+
+		if ($finalHookScope === null) {
+			return [];
+		}
+
+		$initExpr = new PropertyInitializationExpr($propertyName);
+		$hasInit = $finalHookScope->hasExpressionType($initExpr);
+		if ($hasInit->yes()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Set hook for non-virtual property %s::$%s does not %sassign value to it.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+				$hasInit->maybe() ? 'always ' : '',
+			))->identifier('propertySetHook.noAssign')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Properties/SetPropertyHookParameterRule.php b/src/Rules/Properties/SetPropertyHookParameterRule.php
new file mode 100644
index 00000000..b66c502e
--- /dev/null
+++ b/src/Rules/Properties/SetPropertyHookParameterRule.php
@@ -0,0 +1,158 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InPropertyHookNode;
+use PHPStan\Rules\MissingTypehintCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<InPropertyHookNode>
+ */
+final class SetPropertyHookParameterRule implements Rule
+{
+
+	public function __construct(
+		private MissingTypehintCheck $missingTypehintCheck,
+		private bool $checkPhpDocMethodSignatures,
+		private bool $checkMissingTypehints,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InPropertyHookNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$hookReflection = $node->getHookReflection();
+		if (!$hookReflection->isPropertyHook()) {
+			return [];
+		}
+
+		if ($hookReflection->getPropertyHookName() !== 'set') {
+			return [];
+		}
+
+		$propertyReflection = $node->getPropertyReflection();
+		$parameters = $hookReflection->getParameters();
+		if (!isset($parameters[0])) {
+			throw new ShouldNotHappenException();
+		}
+
+		$classReflection = $node->getClassReflection();
+
+		$errors = [];
+		$parameter = $parameters[0];
+		if (!$propertyReflection->hasNativeType()) {
+			if ($parameter->hasNativeType()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Parameter $%s of set hook has a native type but the property %s::$%s does not.',
+					$parameter->getName(),
+					$classReflection->getDisplayName(),
+					$hookReflection->getHookedPropertyName(),
+				))->identifier('propertySetHook.nativeParameterType')
+					->nonIgnorable()
+					->build();
+			}
+		} elseif (!$parameter->hasNativeType()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Parameter $%s of set hook does not have a native type but the property %s::$%s does.',
+				$parameter->getName(),
+				$classReflection->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+			))->identifier('propertySetHook.nativeParameterType')
+				->nonIgnorable()
+				->build();
+		} else {
+			if (!$parameter->getNativeType()->isSuperTypeOf($propertyReflection->getNativeType())->yes()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Native type %s of set hook parameter $%s is not contravariant with native type %s of property %s::$%s.',
+					$parameter->getNativeType()->describe(VerbosityLevel::typeOnly()),
+					$parameter->getName(),
+					$propertyReflection->getNativeType()->describe(VerbosityLevel::typeOnly()),
+					$classReflection->getDisplayName(),
+					$hookReflection->getHookedPropertyName(),
+				))->identifier('propertySetHook.nativeParameterType')
+					->nonIgnorable()
+					->build();
+			}
+		}
+
+		if (!$this->checkPhpDocMethodSignatures || count($errors) > 0) {
+			return $errors;
+		}
+
+		$parameterType = $parameter->getType();
+
+		if (!$parameterType->isSuperTypeOf($propertyReflection->getReadableType())->yes()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Type %s of set hook parameter $%s is not contravariant with type %s of property %s::$%s.',
+				$parameterType->describe(VerbosityLevel::value()),
+				$parameter->getName(),
+				$propertyReflection->getReadableType()->describe(VerbosityLevel::value()),
+				$classReflection->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+			))->identifier('propertySetHook.parameterType')
+				->build();
+		}
+
+		if (!$this->checkMissingTypehints) {
+			return $errors;
+		}
+
+		if ($parameter->getNativeType()->equals($propertyReflection->getReadableType())) {
+			return $errors;
+		}
+
+		foreach ($this->missingTypehintCheck->getIterableTypesWithMissingValueTypehint($parameterType) as $iterableType) {
+			$iterableTypeDescription = $iterableType->describe(VerbosityLevel::typeOnly());
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Set hook for property %s::$%s has parameter $%s with no value type specified in iterable type %s.',
+				$classReflection->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+				$parameter->getName(),
+				$iterableTypeDescription,
+			))
+				->tip(MissingTypehintCheck::MISSING_ITERABLE_VALUE_TYPE_TIP)
+				->identifier('missingType.iterableValue')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getNonGenericObjectTypesWithGenericClass($parameterType) as [$name, $genericTypeNames]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Set hook for property %s::$%s has parameter $%s with generic %s but does not specify its types: %s',
+				$classReflection->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+				$parameter->getName(),
+				$name,
+				$genericTypeNames,
+			))
+				->identifier('missingType.generics')
+				->build();
+		}
+
+		foreach ($this->missingTypehintCheck->getCallablesWithMissingSignature($parameterType) as $callableType) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Set hook for property %s::$%s has parameter $%s with no signature specified for %s.',
+				$classReflection->getDisplayName(),
+				$hookReflection->getHookedPropertyName(),
+				$parameter->getName(),
+				$callableType->describe(VerbosityLevel::typeOnly()),
+			))->identifier('missingType.callable')->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/TypesAssignedToPropertiesRule.php b/src/Rules/Properties/TypesAssignedToPropertiesRule.php
new file mode 100644
index 00000000..e7b125c1
--- /dev/null
+++ b/src/Rules/Properties/TypesAssignedToPropertiesRule.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Expr\StaticPropertyFetch;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class TypesAssignedToPropertiesRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyFetch = $node->getPropertyFetch();
+		$propertyReflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
+
+		$errors = [];
+		foreach ($propertyReflections as $propertyReflection) {
+			$errors = array_merge($errors, $this->processSingleProperty(
+				$propertyReflection,
+				$propertyFetch,
+				$node->getAssignedExpr(),
+			));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleProperty(
+		FoundPropertyReflection $propertyReflection,
+		PropertyFetch|StaticPropertyFetch $fetch,
+		Node\Expr $assignedExpr,
+	): array
+	{
+		if (!$propertyReflection->isWritable()) {
+			return [];
+		}
+
+		$scope = $propertyReflection->getScope();
+		$inFunction = $scope->getFunction();
+		if (
+			$fetch instanceof PropertyFetch
+			&& $fetch->var instanceof Node\Expr\Variable
+			&& is_string($fetch->var->name)
+			&& $fetch->var->name === 'this'
+			&& $fetch->name instanceof Node\Identifier
+			&& $inFunction instanceof PhpMethodFromParserNodeReflection
+			&& $inFunction->isPropertyHook()
+			&& $inFunction->getHookedPropertyName() === $fetch->name->toString()
+		) {
+			$propertyType = $propertyReflection->getReadableType();
+		} else {
+			$propertyType = $propertyReflection->getWritableType();
+		}
+
+		$assignedValueType = $scope->getType($assignedExpr);
+
+		$accepts = $this->ruleLevelHelper->accepts($propertyType, $assignedValueType, $scope->isDeclareStrictTypes());
+		if (!$accepts->result) {
+			$propertyDescription = $this->describePropertyByName($propertyReflection, $propertyReflection->getName());
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($propertyType, $assignedValueType);
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'%s (%s) does not accept %s.',
+					$propertyDescription,
+					$propertyType->describe($verbosityLevel),
+					$assignedValueType->describe($verbosityLevel),
+				))
+					->identifier('assign.propertyType')
+					->acceptsReasonsTip($accepts->reasons)
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+	private function describePropertyByName(PropertyReflection $property, string $propertyName): string
+	{
+		if (!$property->isStatic()) {
+			return sprintf('Property %s::$%s', $property->getDeclaringClass()->getDisplayName(), $propertyName);
+		}
+
+		return sprintf('Static property %s::$%s', $property->getDeclaringClass()->getDisplayName(), $propertyName);
+	}
+
+}
diff --git a/src/Rules/Properties/UninitializedPropertyRule.php b/src/Rules/Properties/UninitializedPropertyRule.php
new file mode 100644
index 00000000..eeef71dc
--- /dev/null
+++ b/src/Rules/Properties/UninitializedPropertyRule.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Reflection\ConstructorsHelper;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class UninitializedPropertyRule implements Rule
+{
+
+	public function __construct(
+		private ConstructorsHelper $constructorsHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$classReflection = $node->getClassReflection();
+		[$properties, $prematureAccess] = $node->getUninitializedProperties($scope, $this->constructorsHelper->getConstructors($classReflection));
+
+		$errors = [];
+		foreach ($properties as $propertyName => $propertyNode) {
+			if ($propertyNode->isReadOnly() || $propertyNode->isReadOnlyByPhpDoc()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Class %s has an uninitialized property $%s. Give it default value or assign it in the constructor.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($propertyNode->getStartLine())
+				->identifier('property.uninitialized')
+				->build();
+		}
+
+		foreach ($prematureAccess as [$propertyName, $line, $propertyNode, $file, $fileDescription]) {
+			if ($propertyNode->isReadOnly() || $propertyNode->isReadOnlyByPhpDoc()) {
+				continue;
+			}
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Access to an uninitialized property %s::$%s.',
+				$classReflection->getDisplayName(),
+				$propertyName,
+			))
+				->line($line)
+				->file($file, $fileDescription)
+				->identifier('property.uninitialized')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Properties/WritingToReadOnlyPropertiesRule.php b/src/Rules/Properties/WritingToReadOnlyPropertiesRule.php
new file mode 100644
index 00000000..52ffe826
--- /dev/null
+++ b/src/Rules/Properties/WritingToReadOnlyPropertiesRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Properties;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\PropertyAssignNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use function sprintf;
+
+/**
+ * @implements Rule<PropertyAssignNode>
+ */
+final class WritingToReadOnlyPropertiesRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+		private PropertyDescriptor $propertyDescriptor,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+		private bool $checkThisOnly,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return PropertyAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$propertyFetch = $node->getPropertyFetch();
+		if (
+			$propertyFetch instanceof Node\Expr\PropertyFetch
+			&& $this->checkThisOnly
+			&& !$this->ruleLevelHelper->isThis($propertyFetch->var)
+		) {
+			return [];
+		}
+
+		$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($propertyFetch, $scope);
+		if ($propertyReflection === null) {
+			return [];
+		}
+
+		if (!$scope->canWriteProperty($propertyReflection)) {
+			return [];
+		}
+
+		if (!$propertyReflection->isWritable()) {
+			$propertyDescription = $this->propertyDescriptor->describeProperty($propertyReflection, $scope, $propertyFetch);
+
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'%s is not writable.',
+					$propertyDescription,
+				))->identifier('assign.propertyReadOnly')->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Pure/FunctionPurityCheck.php b/src/Rules/Pure/FunctionPurityCheck.php
new file mode 100644
index 00000000..538f1e38
--- /dev/null
+++ b/src/Rules/Pure/FunctionPurityCheck.php
@@ -0,0 +1,144 @@
+<?php 
+
+namespace PHPStan\Rules\Pure;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt;
+use PHPStan\Analyser\ImpurePoint;
+use PHPStan\Analyser\ThrowPoint;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Rules\Functions\CallToFunctionStatementWithoutSideEffectsRule;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Type;
+use function array_filter;
+use function count;
+use function in_array;
+use function lcfirst;
+use function sprintf;
+
+final class FunctionPurityCheck
+{
+
+	/**
+	 * @param 'Function'|'Method' $identifier
+	 * @param ExtendedParameterReflection[] $parameters
+	 * @param ImpurePoint[] $impurePoints
+	 * @param ThrowPoint[] $throwPoints
+	 * @param Stmt[] $statements
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		string $functionDescription,
+		string $identifier,
+		FunctionReflection|ExtendedMethodReflection $functionReflection,
+		array $parameters,
+		Type $returnType,
+		array $impurePoints,
+		array $throwPoints,
+		array $statements,
+		bool $isConstructor,
+	): array
+	{
+		$errors = [];
+		$isPure = $functionReflection->isPure();
+
+		if ($isPure->yes()) {
+			foreach ($parameters as $parameter) {
+				if (!$parameter->passedByReference()->createsNewVariable()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s is marked as pure but parameter $%s is passed by reference.',
+					$functionDescription,
+					$parameter->getName(),
+				))->identifier(sprintf('pure%s.parameterByRef', $identifier))->build();
+			}
+
+			if ($returnType->isVoid()->yes() && !$isConstructor) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s is marked as pure but returns void.',
+					$functionDescription,
+				))->identifier(sprintf('pure%s.void', $identifier))->build();
+			}
+
+			foreach ($impurePoints as $impurePoint) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s %s in pure %s.',
+					$impurePoint->isCertain() ? 'Impure' : 'Possibly impure',
+					$impurePoint->getDescription(),
+					lcfirst($functionDescription),
+				))
+					->line($impurePoint->getNode()->getStartLine())
+					->identifier(sprintf(
+						'%s.%s',
+						$impurePoint->isCertain() ? 'impure' : 'possiblyImpure',
+						$impurePoint->getIdentifier(),
+					))
+					->build();
+			}
+		} elseif ($isPure->no()) {
+			if (
+				count($throwPoints) === 0
+				&& count($impurePoints) === 0
+				&& count($functionReflection->getAsserts()->getAll()) === 0
+			) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s is marked as impure but does not have any side effects.',
+					$functionDescription,
+				))->identifier(sprintf('impure%s.pure', $identifier))->build();
+			}
+		} elseif ($returnType->isVoid()->yes()) {
+			if (
+				count($throwPoints) === 0
+				&& count($impurePoints) === 0
+				&& !$isConstructor
+				&& (!$functionReflection instanceof ExtendedMethodReflection || $functionReflection->isPrivate())
+				&& count($functionReflection->getAsserts()->getAll()) === 0
+			) {
+				$hasByRef = false;
+				foreach ($parameters as $parameter) {
+					if (!$parameter->passedByReference()->createsNewVariable()) {
+						continue;
+					}
+
+					$hasByRef = true;
+					break;
+				}
+
+				$statements = array_filter($statements, static function (Stmt $stmt): bool {
+					if ($stmt instanceof Stmt\Nop) {
+						return false;
+					}
+
+					if (!$stmt instanceof Stmt\Expression) {
+						return true;
+					}
+					if (!$stmt->expr instanceof FuncCall) {
+						return true;
+					}
+					if (!$stmt->expr->name instanceof Name) {
+						return true;
+					}
+
+					return !in_array($stmt->expr->name->toString(), CallToFunctionStatementWithoutSideEffectsRule::PHPSTAN_TESTING_FUNCTIONS, true);
+				});
+
+				if (!$hasByRef && count($statements) > 0) {
+					$errors[] = RuleErrorBuilder::message(sprintf(
+						'%s returns void but does not have any side effects.',
+						$functionDescription,
+					))->identifier('void.pure')->build();
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Pure/PureFunctionRule.php b/src/Rules/Pure/PureFunctionRule.php
new file mode 100644
index 00000000..a009aca7
--- /dev/null
+++ b/src/Rules/Pure/PureFunctionRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\Pure;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class PureFunctionRule implements Rule
+{
+
+	public function __construct(private FunctionPurityCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$function = $node->getFunctionReflection();
+
+		return $this->check->check(
+			sprintf('Function %s()', $function->getName()),
+			'Function',
+			$function,
+			$function->getParameters(),
+			$function->getReturnType(),
+			$node->getImpurePoints(),
+			$node->getStatementResult()->getThrowPoints(),
+			$node->getStatements(),
+			false,
+		);
+	}
+
+}
diff --git a/src/Rules/Pure/PureMethodRule.php b/src/Rules/Pure/PureMethodRule.php
new file mode 100644
index 00000000..1231277e
--- /dev/null
+++ b/src/Rules/Pure/PureMethodRule.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\Pure;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class PureMethodRule implements Rule
+{
+
+	public function __construct(private FunctionPurityCheck $check)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$method = $node->getMethodReflection();
+
+		return $this->check->check(
+			sprintf('Method %s::%s()', $method->getDeclaringClass()->getDisplayName(), $method->getName()),
+			'Method',
+			$method,
+			$method->getParameters(),
+			$method->getReturnType(),
+			$node->getImpurePoints(),
+			$node->getStatementResult()->getThrowPoints(),
+			$node->getStatements(),
+			$method->isConstructor(),
+		);
+	}
+
+}
diff --git a/src/Rules/Regexp/RegularExpressionPatternRule.php b/src/Rules/Regexp/RegularExpressionPatternRule.php
new file mode 100644
index 00000000..5a66cbec
--- /dev/null
+++ b/src/Rules/Regexp/RegularExpressionPatternRule.php
@@ -0,0 +1,133 @@
+<?php 
+
+namespace PHPStan\Rules\Regexp;
+return;
+
+use Nette\Utils\RegexpException;
+use Nette\Utils\Strings;
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Regex\RegexExpressionHelper;
+use function in_array;
+use function sprintf;
+use function str_starts_with;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class RegularExpressionPatternRule implements Rule
+{
+
+	public function __construct(
+		private RegexExpressionHelper $regexExpressionHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$patterns = $this->extractPatterns($node, $scope);
+
+		$errors = [];
+		foreach ($patterns as $pattern) {
+			$errorMessage = $this->validatePattern($pattern);
+			if ($errorMessage === null) {
+				continue;
+			}
+
+			$errors[] = RuleErrorBuilder::message(sprintf('Regex pattern is invalid: %s', $errorMessage))->identifier('regexp.pattern')->build();
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	private function extractPatterns(FuncCall $functionCall, Scope $scope): array
+	{
+		if (!$functionCall->name instanceof Node\Name) {
+			return [];
+		}
+		$functionName = strtolower((string) $functionCall->name);
+		if (!str_starts_with($functionName, 'preg_')) {
+			return [];
+		}
+
+		if (!isset($functionCall->getArgs()[0])) {
+			return [];
+		}
+		$patternNode = $functionCall->getArgs()[0]->value;
+		$patternType = $scope->getType($patternNode);
+
+		$patternStrings = [];
+
+		if (
+			in_array($functionName, [
+				'preg_match',
+				'preg_match_all',
+				'preg_split',
+				'preg_grep',
+				'preg_replace',
+				'preg_replace_callback',
+				'preg_filter',
+			], true)
+		) {
+			if ($patternNode instanceof Node\Expr\BinaryOp\Concat) {
+				$patternType = $this->regexExpressionHelper->resolvePatternConcat($patternNode, $scope);
+			}
+			foreach ($patternType->getConstantStrings() as $constantStringType) {
+				$patternStrings[] = $constantStringType->getValue();
+			}
+		}
+
+		if (
+			in_array($functionName, [
+				'preg_replace',
+				'preg_replace_callback',
+				'preg_filter',
+			], true)
+		) {
+			foreach ($patternType->getConstantArrays() as $constantArrayType) {
+				foreach ($constantArrayType->getValueTypes() as $arrayKeyType) {
+					foreach ($arrayKeyType->getConstantStrings() as $constantString) {
+						$patternStrings[] = $constantString->getValue();
+					}
+				}
+			}
+		}
+
+		if ($functionName === 'preg_replace_callback_array') {
+			foreach ($patternType->getConstantArrays() as $constantArrayType) {
+				foreach ($constantArrayType->getKeyTypes() as $arrayKeyType) {
+					foreach ($arrayKeyType->getConstantStrings() as $constantString) {
+						$patternStrings[] = $constantString->getValue();
+					}
+				}
+			}
+		}
+
+		return $patternStrings;
+	}
+
+	private function validatePattern(string $pattern): ?string
+	{
+		try {
+			Strings::match('', $pattern);
+		} catch (RegexpException $e) {
+			return $e->getMessage();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Rules/Regexp/RegularExpressionQuotingRule.php b/src/Rules/Regexp/RegularExpressionQuotingRule.php
new file mode 100644
index 00000000..f1b0ee9e
--- /dev/null
+++ b/src/Rules/Regexp/RegularExpressionQuotingRule.php
@@ -0,0 +1,243 @@
+<?php 
+
+namespace PHPStan\Rules\Regexp;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp\Concat;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\ArgumentsNormalizer;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Regex\RegexExpressionHelper;
+use function array_filter;
+use function array_merge;
+use function array_values;
+use function count;
+use function in_array;
+use function sprintf;
+use function strlen;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class RegularExpressionQuotingRule implements Rule
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private RegexExpressionHelper $regexExpressionHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node->name instanceof Node\Name) {
+			return [];
+		}
+
+		if (!$this->reflectionProvider->hasFunction($node->name, $scope)) {
+			return [];
+		}
+
+		$functionReflection = $this->reflectionProvider->getFunction($node->name, $scope);
+		if (
+			!in_array($functionReflection->getName(), [
+				'preg_match',
+				'preg_match_all',
+				'preg_filter',
+				'preg_grep',
+				'preg_replace',
+				'preg_replace_callback',
+				'preg_split',
+			], true)
+		) {
+			return [];
+		}
+
+		$normalizedArgs = $this->getNormalizedArgs($node, $scope, $functionReflection);
+		if ($normalizedArgs === null) {
+			return [];
+		}
+		if (!isset($normalizedArgs[0])) {
+			return [];
+		}
+		if (!$normalizedArgs[0]->value instanceof Concat) {
+			return [];
+		}
+
+		$patternDelimiters = $this->regexExpressionHelper->getPatternDelimiters($normalizedArgs[0]->value, $scope);
+		return $this->validateQuoteDelimiters($normalizedArgs[0]->value, $scope, $patternDelimiters);
+	}
+
+	/**
+	 * @param string[] $patternDelimiters
+	 *
+	 * @return list<IdentifierRuleError>
+	 */
+	private function validateQuoteDelimiters(Concat $concat, Scope $scope, array $patternDelimiters): array
+	{
+		if ($patternDelimiters === []) {
+			return [];
+		}
+
+		$errors = [];
+		if (
+			$concat->left instanceof FuncCall
+			&& $concat->left->name instanceof Name
+			&& $concat->left->name->toLowerString() === 'preg_quote'
+		) {
+			$pregError = $this->validatePregQuote($concat->left, $scope, $patternDelimiters);
+			if ($pregError !== null) {
+				$errors[] = $pregError;
+			}
+		} elseif ($concat->left instanceof Concat) {
+			$errors = array_merge($errors, $this->validateQuoteDelimiters($concat->left, $scope, $patternDelimiters));
+		}
+
+		if (
+			$concat->right instanceof FuncCall
+			&& $concat->right->name instanceof Name
+			&& $concat->right->name->toLowerString() === 'preg_quote'
+		) {
+			$pregError = $this->validatePregQuote($concat->right, $scope, $patternDelimiters);
+			if ($pregError !== null) {
+				$errors[] = $pregError;
+			}
+		} elseif ($concat->right instanceof Concat) {
+			$errors = array_merge($errors, $this->validateQuoteDelimiters($concat->right, $scope, $patternDelimiters));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param string[] $patternDelimiters
+	 */
+	private function validatePregQuote(FuncCall $pregQuote, Scope $scope, array $patternDelimiters): ?IdentifierRuleError
+	{
+		if (!$pregQuote->name instanceof Node\Name) {
+			return null;
+		}
+
+		if (!$this->reflectionProvider->hasFunction($pregQuote->name, $scope)) {
+			return null;
+		}
+		$functionReflection = $this->reflectionProvider->getFunction($pregQuote->name, $scope);
+
+		$args = $this->getNormalizedArgs($pregQuote, $scope, $functionReflection);
+		if ($args === null) {
+			return null;
+		}
+
+		$patternDelimiters = $this->removeDefaultEscapedDelimiters($patternDelimiters);
+		if ($patternDelimiters === []) {
+			return null;
+		}
+
+		if (count($args) === 1) {
+			if (count($patternDelimiters) === 1) {
+				return RuleErrorBuilder::message(sprintf('Call to preg_quote() is missing delimiter %s to be effective.', $patternDelimiters[0]))
+					->line($pregQuote->getStartLine())
+					->identifier('argument.invalidPregQuote')
+					->build();
+			}
+
+			return RuleErrorBuilder::message('Call to preg_quote() is missing delimiter parameter to be effective.')
+				->line($pregQuote->getStartLine())
+				->identifier('argument.invalidPregQuote')
+				->build();
+		}
+
+		if (count($args) >= 2) {
+
+			foreach ($scope->getType($args[1]->value)->getConstantStrings() as $quoteDelimiterType) {
+				$quoteDelimiter = $quoteDelimiterType->getValue();
+
+				$quoteDelimiters = $this->removeDefaultEscapedDelimiters([$quoteDelimiter]);
+				if ($quoteDelimiters === []) {
+					continue;
+				}
+
+				if (count($quoteDelimiters) !== 1) {
+					throw new ShouldNotHappenException();
+				}
+				$quoteDelimiter = $quoteDelimiters[0];
+
+				if (!in_array($quoteDelimiter, $patternDelimiters, true)) {
+					if (count($patternDelimiters) === 1) {
+						return RuleErrorBuilder::message(sprintf('Call to preg_quote() uses invalid delimiter %s while pattern uses %s.', $quoteDelimiter, $patternDelimiters[0]))
+							->line($pregQuote->getStartLine())
+							->identifier('argument.invalidPregQuote')
+							->build();
+					}
+
+					return RuleErrorBuilder::message(sprintf('Call to preg_quote() uses invalid delimiter %s.', $quoteDelimiter))
+						->line($pregQuote->getStartLine())
+						->identifier('argument.invalidPregQuote')
+						->build();
+				}
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param string[] $delimiters
+	 *
+	 * @return list<string>
+	 */
+	private function removeDefaultEscapedDelimiters(array $delimiters): array
+	{
+		return array_values(array_filter($delimiters, fn (string $delimiter): bool => !$this->isDefaultEscaped($delimiter)));
+	}
+
+	private function isDefaultEscaped(string $delimiter): bool
+	{
+		if (strlen($delimiter) !== 1) {
+			return false;
+		}
+
+		return in_array(
+			$delimiter,
+			// these delimiters are escaped, no matter what preg_quote() 2nd arg looks like
+			['.', '\\',  '+', '*', '?', '[', '^', ']', '$', '(', ')', '{', '}', '=', '!', '<', '>', '|', ':', '-', '#'],
+			true,
+		);
+	}
+
+	/**
+	 * @return Node\Arg[]|null
+	 */
+	private function getNormalizedArgs(FuncCall $functionCall, Scope $scope, FunctionReflection $functionReflection): ?array
+	{
+		$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+			$functionReflection->getNamedArgumentsVariants(),
+		);
+
+		$normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $functionCall);
+		if ($normalizedFuncCall === null) {
+			return null;
+		}
+
+		return $normalizedFuncCall->getArgs();
+	}
+
+}
diff --git a/src/Rules/Registry.php b/src/Rules/Registry.php
new file mode 100644
index 00000000..dc245cea
--- /dev/null
+++ b/src/Rules/Registry.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+
+interface Registry
+{
+
+	/**
+	 * @template TNodeType of Node
+	 * @param class-string<TNodeType> $nodeType
+	 * @return array<Rule<TNodeType>>
+	 */
+	public function getRules(string $nodeType): array;
+
+}
diff --git a/src/Rules/Rule.php b/src/Rules/Rule.php
new file mode 100644
index 00000000..46093178
--- /dev/null
+++ b/src/Rules/Rule.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+
+/**
+ * This is the interface custom rules implement. To register it in the configuration file
+ * use the `phpstan.rules.rule` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\MyRule
+ *		tags:
+ *			- phpstan.rules.rule
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/rules
+ *
+ * @api
+ * @template TNodeType of Node
+ */
+interface Rule
+{
+
+	/**
+	 * @return class-string<TNodeType>
+	 */
+	public function getNodeType(): string;
+
+	/**
+	 * @param TNodeType $node
+	 * @return list<IdentifierRuleError>
+	 */
+	public function processNode(Node $node, Scope $scope): array;
+
+}
diff --git a/src/Rules/RuleError.php b/src/Rules/RuleError.php
new file mode 100644
index 00000000..de5b46a6
--- /dev/null
+++ b/src/Rules/RuleError.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface RuleError
+{
+
+	public function getMessage(): string;
+
+}
diff --git a/src/Rules/RuleErrorBuilder.php b/src/Rules/RuleErrorBuilder.php
new file mode 100644
index 00000000..2b9148b5
--- /dev/null
+++ b/src/Rules/RuleErrorBuilder.php
@@ -0,0 +1,285 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\ShouldNotHappenException;
+use function array_map;
+use function class_exists;
+use function count;
+use function implode;
+use function is_file;
+use function sprintf;
+
+/**
+ * @api
+ * @template-covariant T of RuleError
+ */
+final class RuleErrorBuilder
+{
+
+	private const TYPE_MESSAGE = 1;
+	private const TYPE_LINE = 2;
+	private const TYPE_FILE = 4;
+	private const TYPE_TIP = 8;
+	private const TYPE_IDENTIFIER = 16;
+	private const TYPE_METADATA = 32;
+	private const TYPE_NON_IGNORABLE = 64;
+
+	private int $type;
+
+	/** @var mixed[] */
+	private array $properties;
+
+	/** @var list<string> */
+	private array $tips = [];
+
+	private function __construct(string $message)
+	{
+		$this->properties['message'] = $message;
+		$this->type = self::TYPE_MESSAGE;
+	}
+
+	/**
+	 * @return array<int, array{string, array<array{string|null, string|null, string|null}>}>
+	 */
+	public static function getRuleErrorTypes(): array
+	{
+		return [
+			self::TYPE_MESSAGE => [
+				RuleError::class,
+				[
+					[
+						'message',
+						'string',
+						'string',
+					],
+				],
+			],
+			self::TYPE_LINE => [
+				LineRuleError::class,
+				[
+					[
+						'line',
+						'int',
+						'int',
+					],
+				],
+			],
+			self::TYPE_FILE => [
+				FileRuleError::class,
+				[
+					[
+						'file',
+						'string',
+						'string',
+					],
+					[
+						'fileDescription',
+						'string',
+						'string',
+					],
+				],
+			],
+			self::TYPE_TIP => [
+				TipRuleError::class,
+				[
+					[
+						'tip',
+						'string',
+						'string',
+					],
+				],
+			],
+			self::TYPE_IDENTIFIER => [
+				IdentifierRuleError::class,
+				[
+					[
+						'identifier',
+						'string',
+						'string',
+					],
+				],
+			],
+			self::TYPE_METADATA => [
+				MetadataRuleError::class,
+				[
+					[
+						'metadata',
+						'array',
+						'mixed[]',
+					],
+				],
+			],
+			self::TYPE_NON_IGNORABLE => [
+				NonIgnorableRuleError::class,
+				[],
+			],
+		];
+	}
+
+	/**
+	 * @return self<RuleError>
+	 */
+	public static function message(string $message): self
+	{
+		return new self($message);
+	}
+
+	/**
+	 * @phpstan-this-out self<T&LineRuleError>
+	 * @return self<T&LineRuleError>
+	 */
+	public function line(int $line): self
+	{
+		$this->properties['line'] = $line;
+		$this->type |= self::TYPE_LINE;
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&FileRuleError>
+	 * @return self<T&FileRuleError>
+	 */
+	public function file(string $file, ?string $fileDescription = null): self
+	{
+		if (!is_file($file)) {
+			throw new ShouldNotHappenException(sprintf('File %s does not exist.', $file));
+		}
+		$this->properties['file'] = $file;
+		$this->properties['fileDescription'] = $fileDescription ?? $file;
+		$this->type |= self::TYPE_FILE;
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&TipRuleError>
+	 * @return self<T&TipRuleError>
+	 */
+	public function tip(string $tip): self
+	{
+		$this->tips = [$tip];
+		$this->type |= self::TYPE_TIP;
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&TipRuleError>
+	 * @return self<T&TipRuleError>
+	 */
+	public function addTip(string $tip): self
+	{
+		$this->tips[] = $tip;
+		$this->type |= self::TYPE_TIP;
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&TipRuleError>
+	 * @return self<T&TipRuleError>
+	 */
+	public function discoveringSymbolsTip(): self
+	{
+		return $this->tip('Learn more at https://phpstan.org/user-guide/discovering-symbols');
+	}
+
+	/**
+	 * @param list<string> $reasons
+	 * @phpstan-this-out self<T&TipRuleError>
+	 * @return self<T&TipRuleError>
+	 */
+	public function acceptsReasonsTip(array $reasons): self
+	{
+		foreach ($reasons as $reason) {
+			$this->addTip($reason);
+		}
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&TipRuleError>
+	 * @return self<T&TipRuleError>
+	 */
+	public function treatPhpDocTypesAsCertainTip(): self
+	{
+		return $this->tip('Because the type is coming from a PHPDoc, you can turn off this check by setting <fg=cyan>treatPhpDocTypesAsCertain: false</> in your <fg=cyan>%configurationFile%</>.');
+	}
+
+	/**
+	 * Sets an error identifier.
+	 *
+	 * List of all current error identifiers in PHPStan: https://phpstan.org/error-identifiers
+	 *
+	 * @phpstan-this-out self<T&IdentifierRuleError>
+	 * @return self<T&IdentifierRuleError>
+	 */
+	public function identifier(string $identifier): self
+	{
+		if (!Error::validateIdentifier($identifier)) {
+			throw new ShouldNotHappenException(sprintf('Invalid identifier: %s, error identifiers must match /%s/', $identifier, Error::PATTERN_IDENTIFIER));
+		}
+
+		$this->properties['identifier'] = $identifier;
+		$this->type |= self::TYPE_IDENTIFIER;
+
+		return $this;
+	}
+
+	/**
+	 * @param mixed[] $metadata
+	 * @phpstan-this-out self<T&MetadataRuleError>
+	 * @return self<T&MetadataRuleError>
+	 */
+	public function metadata(array $metadata): self
+	{
+		$this->properties['metadata'] = $metadata;
+		$this->type |= self::TYPE_METADATA;
+
+		return $this;
+	}
+
+	/**
+	 * @phpstan-this-out self<T&NonIgnorableRuleError>
+	 * @return self<T&NonIgnorableRuleError>
+	 */
+	public function nonIgnorable(): self
+	{
+		$this->type |= self::TYPE_NON_IGNORABLE;
+
+		return $this;
+	}
+
+	/**
+	 * @return T
+	 */
+	public function build(): RuleError
+	{
+		/** @var class-string<T> $className */
+		$className = sprintf('PHPStan\\Rules\\RuleErrors\\RuleError%d', $this->type);
+		if (!class_exists($className)) {
+			throw new ShouldNotHappenException(sprintf('Class %s does not exist.', $className));
+		}
+
+		$ruleError = new $className();
+		foreach ($this->properties as $propertyName => $value) {
+			$ruleError->{$propertyName} = $value;
+		}
+
+		if (count($this->tips) > 0) {
+			if (count($this->tips) === 1) {
+				$ruleError->tip = $this->tips[0];
+			} else {
+				$ruleError->tip = implode("\n", array_map(static fn (string $tip) => sprintf('• %s', $tip), $this->tips));
+			}
+		}
+
+		return $ruleError;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError1.php b/src/Rules/RuleErrors/RuleError1.php
new file mode 100644
index 00000000..b28b0a79
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError1.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError1 implements RuleError
+{
+
+	public string $message;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError101.php b/src/Rules/RuleErrors/RuleError101.php
new file mode 100644
index 00000000..8bc0a297
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError101.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError101 implements RuleError, FileRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError103.php b/src/Rules/RuleErrors/RuleError103.php
new file mode 100644
index 00000000..f46d5c2d
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError103.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError103 implements RuleError, LineRuleError, FileRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError105.php b/src/Rules/RuleErrors/RuleError105.php
new file mode 100644
index 00000000..e2152168
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError105.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError105 implements RuleError, TipRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError107.php b/src/Rules/RuleErrors/RuleError107.php
new file mode 100644
index 00000000..a2768961
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError107.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError107 implements RuleError, LineRuleError, TipRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError109.php b/src/Rules/RuleErrors/RuleError109.php
new file mode 100644
index 00000000..fb11c3be
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError109.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError109 implements RuleError, FileRuleError, TipRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError11.php b/src/Rules/RuleErrors/RuleError11.php
new file mode 100644
index 00000000..bdb304ea
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError11.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError11 implements RuleError, LineRuleError, TipRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError111.php b/src/Rules/RuleErrors/RuleError111.php
new file mode 100644
index 00000000..d8aad0b4
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError111.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError111 implements RuleError, LineRuleError, FileRuleError, TipRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError113.php b/src/Rules/RuleErrors/RuleError113.php
new file mode 100644
index 00000000..12cd2b78
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError113.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError113 implements RuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError115.php b/src/Rules/RuleErrors/RuleError115.php
new file mode 100644
index 00000000..7e0292dd
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError115.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError115 implements RuleError, LineRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError117.php b/src/Rules/RuleErrors/RuleError117.php
new file mode 100644
index 00000000..af873f86
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError117.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError117 implements RuleError, FileRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError119.php b/src/Rules/RuleErrors/RuleError119.php
new file mode 100644
index 00000000..81d1197e
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError119.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError119 implements RuleError, LineRuleError, FileRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError121.php b/src/Rules/RuleErrors/RuleError121.php
new file mode 100644
index 00000000..89f3cc00
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError121.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError121 implements RuleError, TipRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError123.php b/src/Rules/RuleErrors/RuleError123.php
new file mode 100644
index 00000000..161c8d97
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError123.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError123 implements RuleError, LineRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError125.php b/src/Rules/RuleErrors/RuleError125.php
new file mode 100644
index 00000000..0a2301bf
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError125.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError125 implements RuleError, FileRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError127.php b/src/Rules/RuleErrors/RuleError127.php
new file mode 100644
index 00000000..6ac96cce
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError127.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError127 implements RuleError, LineRuleError, FileRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError13.php b/src/Rules/RuleErrors/RuleError13.php
new file mode 100644
index 00000000..3199a5ae
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError13.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError13 implements RuleError, FileRuleError, TipRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError15.php b/src/Rules/RuleErrors/RuleError15.php
new file mode 100644
index 00000000..b4c78251
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError15.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError15 implements RuleError, LineRuleError, FileRuleError, TipRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError17.php b/src/Rules/RuleErrors/RuleError17.php
new file mode 100644
index 00000000..ba5fdb38
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError17.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError17 implements RuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError19.php b/src/Rules/RuleErrors/RuleError19.php
new file mode 100644
index 00000000..ba75523a
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError19.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError19 implements RuleError, LineRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError21.php b/src/Rules/RuleErrors/RuleError21.php
new file mode 100644
index 00000000..d7e00255
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError21.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError21 implements RuleError, FileRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError23.php b/src/Rules/RuleErrors/RuleError23.php
new file mode 100644
index 00000000..b78819af
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError23.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError23 implements RuleError, LineRuleError, FileRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError25.php b/src/Rules/RuleErrors/RuleError25.php
new file mode 100644
index 00000000..98b261cb
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError25.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError25 implements RuleError, TipRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError27.php b/src/Rules/RuleErrors/RuleError27.php
new file mode 100644
index 00000000..cc02e858
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError27.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError27 implements RuleError, LineRuleError, TipRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError29.php b/src/Rules/RuleErrors/RuleError29.php
new file mode 100644
index 00000000..3958e271
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError29.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError29 implements RuleError, FileRuleError, TipRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError3.php b/src/Rules/RuleErrors/RuleError3.php
new file mode 100644
index 00000000..2e5694c5
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError3.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError3 implements RuleError, LineRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError31.php b/src/Rules/RuleErrors/RuleError31.php
new file mode 100644
index 00000000..c9f7e8b4
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError31.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError31 implements RuleError, LineRuleError, FileRuleError, TipRuleError, IdentifierRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError33.php b/src/Rules/RuleErrors/RuleError33.php
new file mode 100644
index 00000000..c23995e7
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError33.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError33 implements RuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError35.php b/src/Rules/RuleErrors/RuleError35.php
new file mode 100644
index 00000000..d4aa4e95
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError35.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError35 implements RuleError, LineRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError37.php b/src/Rules/RuleErrors/RuleError37.php
new file mode 100644
index 00000000..dd0d700a
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError37.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError37 implements RuleError, FileRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError39.php b/src/Rules/RuleErrors/RuleError39.php
new file mode 100644
index 00000000..2223196f
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError39.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError39 implements RuleError, LineRuleError, FileRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError41.php b/src/Rules/RuleErrors/RuleError41.php
new file mode 100644
index 00000000..de70255e
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError41.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError41 implements RuleError, TipRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError43.php b/src/Rules/RuleErrors/RuleError43.php
new file mode 100644
index 00000000..8d164cfe
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError43.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError43 implements RuleError, LineRuleError, TipRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError45.php b/src/Rules/RuleErrors/RuleError45.php
new file mode 100644
index 00000000..5a5f300f
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError45.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError45 implements RuleError, FileRuleError, TipRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError47.php b/src/Rules/RuleErrors/RuleError47.php
new file mode 100644
index 00000000..b8cd17d1
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError47.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError47 implements RuleError, LineRuleError, FileRuleError, TipRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError49.php b/src/Rules/RuleErrors/RuleError49.php
new file mode 100644
index 00000000..b2932d7e
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError49.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError49 implements RuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError5.php b/src/Rules/RuleErrors/RuleError5.php
new file mode 100644
index 00000000..d37d1dc7
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError5.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError5 implements RuleError, FileRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError51.php b/src/Rules/RuleErrors/RuleError51.php
new file mode 100644
index 00000000..2911bcaa
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError51.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError51 implements RuleError, LineRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError53.php b/src/Rules/RuleErrors/RuleError53.php
new file mode 100644
index 00000000..c6bc5879
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError53.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError53 implements RuleError, FileRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError55.php b/src/Rules/RuleErrors/RuleError55.php
new file mode 100644
index 00000000..32061ba4
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError55.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError55 implements RuleError, LineRuleError, FileRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError57.php b/src/Rules/RuleErrors/RuleError57.php
new file mode 100644
index 00000000..a1923a62
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError57.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError57 implements RuleError, TipRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError59.php b/src/Rules/RuleErrors/RuleError59.php
new file mode 100644
index 00000000..2efc5e4d
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError59.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError59 implements RuleError, LineRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError61.php b/src/Rules/RuleErrors/RuleError61.php
new file mode 100644
index 00000000..04f29405
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError61.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError61 implements RuleError, FileRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError63.php b/src/Rules/RuleErrors/RuleError63.php
new file mode 100644
index 00000000..87e4f86e
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError63.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError63 implements RuleError, LineRuleError, FileRuleError, TipRuleError, IdentifierRuleError, MetadataRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError65.php b/src/Rules/RuleErrors/RuleError65.php
new file mode 100644
index 00000000..c8ceb02c
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError65.php
@@ -0,0 +1,22 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError65 implements RuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError67.php b/src/Rules/RuleErrors/RuleError67.php
new file mode 100644
index 00000000..26c26def
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError67.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError67 implements RuleError, LineRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError69.php b/src/Rules/RuleErrors/RuleError69.php
new file mode 100644
index 00000000..fcda633d
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError69.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError69 implements RuleError, FileRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError7.php b/src/Rules/RuleErrors/RuleError7.php
new file mode 100644
index 00000000..13c0c1aa
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError7.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError7 implements RuleError, LineRuleError, FileRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError71.php b/src/Rules/RuleErrors/RuleError71.php
new file mode 100644
index 00000000..c44595f4
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError71.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError71 implements RuleError, LineRuleError, FileRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError73.php b/src/Rules/RuleErrors/RuleError73.php
new file mode 100644
index 00000000..c3098c46
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError73.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError73 implements RuleError, TipRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError75.php b/src/Rules/RuleErrors/RuleError75.php
new file mode 100644
index 00000000..0c81d8f7
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError75.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError75 implements RuleError, LineRuleError, TipRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError77.php b/src/Rules/RuleErrors/RuleError77.php
new file mode 100644
index 00000000..9382fd2b
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError77.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError77 implements RuleError, FileRuleError, TipRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError79.php b/src/Rules/RuleErrors/RuleError79.php
new file mode 100644
index 00000000..2262e0de
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError79.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError79 implements RuleError, LineRuleError, FileRuleError, TipRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError81.php b/src/Rules/RuleErrors/RuleError81.php
new file mode 100644
index 00000000..fd79d8b8
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError81.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError81 implements RuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError83.php b/src/Rules/RuleErrors/RuleError83.php
new file mode 100644
index 00000000..56b17e03
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError83.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError83 implements RuleError, LineRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError85.php b/src/Rules/RuleErrors/RuleError85.php
new file mode 100644
index 00000000..7ac9561f
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError85.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError85 implements RuleError, FileRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError87.php b/src/Rules/RuleErrors/RuleError87.php
new file mode 100644
index 00000000..8c96dd1f
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError87.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError87 implements RuleError, LineRuleError, FileRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError89.php b/src/Rules/RuleErrors/RuleError89.php
new file mode 100644
index 00000000..36582092
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError89.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError89 implements RuleError, TipRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError9.php b/src/Rules/RuleErrors/RuleError9.php
new file mode 100644
index 00000000..b344b1f0
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError9.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError9 implements RuleError, TipRuleError
+{
+
+	public string $message;
+
+	public string $tip;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError91.php b/src/Rules/RuleErrors/RuleError91.php
new file mode 100644
index 00000000..cdb45140
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError91.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError91 implements RuleError, LineRuleError, TipRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError93.php b/src/Rules/RuleErrors/RuleError93.php
new file mode 100644
index 00000000..074ef2df
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError93.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError93 implements RuleError, FileRuleError, TipRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError95.php b/src/Rules/RuleErrors/RuleError95.php
new file mode 100644
index 00000000..a788201a
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError95.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\FileRuleError;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+use PHPStan\Rules\TipRuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError95 implements RuleError, LineRuleError, FileRuleError, TipRuleError, IdentifierRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	public string $file;
+
+	public string $fileDescription;
+
+	public string $tip;
+
+	public string $identifier;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	public function getFile(): string
+	{
+		return $this->file;
+	}
+
+	public function getFileDescription(): string
+	{
+		return $this->fileDescription;
+	}
+
+	public function getTip(): string
+	{
+		return $this->tip;
+	}
+
+	public function getIdentifier(): string
+	{
+		return $this->identifier;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError97.php b/src/Rules/RuleErrors/RuleError97.php
new file mode 100644
index 00000000..c7b0520f
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError97.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError97 implements RuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleErrors/RuleError99.php b/src/Rules/RuleErrors/RuleError99.php
new file mode 100644
index 00000000..1ec91701
--- /dev/null
+++ b/src/Rules/RuleErrors/RuleError99.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Rules\RuleErrors;
+return;
+
+use PHPStan\Rules\LineRuleError;
+use PHPStan\Rules\MetadataRuleError;
+use PHPStan\Rules\NonIgnorableRuleError;
+use PHPStan\Rules\RuleError;
+
+/**
+ * @internal Use PHPStan\Rules\RuleErrorBuilder instead.
+ */
+final class RuleError99 implements RuleError, LineRuleError, MetadataRuleError, NonIgnorableRuleError
+{
+
+	public string $message;
+
+	public int $line;
+
+	/** @var mixed[] */
+	public array $metadata;
+
+	public function getMessage(): string
+	{
+		return $this->message;
+	}
+
+	public function getLine(): int
+	{
+		return $this->line;
+	}
+
+	/**
+	 * @return mixed[]
+	 */
+	public function getMetadata(): array
+	{
+		return $this->metadata;
+	}
+
+}
diff --git a/src/Rules/RuleLevelHelper.php b/src/Rules/RuleLevelHelper.php
new file mode 100644
index 00000000..1fe70e02
--- /dev/null
+++ b/src/Rules/RuleLevelHelper.php
@@ -0,0 +1,320 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StrictMixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function count;
+use function sprintf;
+
+final class RuleLevelHelper
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private bool $checkNullables,
+		private bool $checkThisOnly,
+		private bool $checkUnionTypes,
+		private bool $checkExplicitMixed,
+		private bool $checkImplicitMixed,
+		private bool $checkBenevolentUnionTypes,
+	)
+	{
+	}
+
+	/** @api */
+	public function isThis(Expr $expression): bool
+	{
+		return $expression instanceof Expr\Variable && $expression->name === 'this';
+	}
+
+	private function transformCommonType(Type $type): Type
+	{
+		if (!$this->checkExplicitMixed && !$this->checkImplicitMixed) {
+			return $type;
+		}
+
+		return TypeTraverser::map($type, function (Type $type, callable $traverse) {
+			if ($type instanceof TemplateMixedType) {
+				if ($this->checkExplicitMixed) {
+					return $type->toStrictMixedType();
+				}
+			}
+			if (
+				$type instanceof MixedType
+				&& (
+					($type->isExplicitMixed() && $this->checkExplicitMixed)
+					|| (!$type->isExplicitMixed() && $this->checkImplicitMixed)
+				)
+			) {
+				return new StrictMixedType();
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	/**
+	 * @return array{Type, bool}
+	 */
+	private function transformAcceptedType(Type $acceptingType, Type $acceptedType): array
+	{
+		$checkForUnion = $this->checkUnionTypes;
+		$acceptedType = TypeTraverser::map($acceptedType, function (Type $acceptedType, callable $traverse) use ($acceptingType, &$checkForUnion): Type {
+			if ($acceptedType instanceof CallableType) {
+				if ($acceptedType->isCommonCallable()) {
+					return $acceptedType;
+				}
+
+				return new CallableType(
+					$acceptedType->getParameters(),
+					$traverse($this->transformCommonType($acceptedType->getReturnType())),
+					$acceptedType->isVariadic(),
+					$acceptedType->getTemplateTypeMap(),
+					$acceptedType->getResolvedTemplateTypeMap(),
+					$acceptedType->getTemplateTags(),
+					$acceptedType->isPure(),
+				);
+			}
+
+			if ($acceptedType instanceof ClosureType) {
+				if ($acceptedType->isCommonCallable()) {
+					return $acceptedType;
+				}
+
+				return new ClosureType(
+					$acceptedType->getParameters(),
+					$traverse($this->transformCommonType($acceptedType->getReturnType())),
+					$acceptedType->isVariadic(),
+					$acceptedType->getTemplateTypeMap(),
+					$acceptedType->getResolvedTemplateTypeMap(),
+					$acceptedType->getCallSiteVarianceMap(),
+					$acceptedType->getTemplateTags(),
+					$acceptedType->getThrowPoints(),
+					$acceptedType->getImpurePoints(),
+					$acceptedType->getInvalidateExpressions(),
+					$acceptedType->getUsedVariables(),
+					$acceptedType->acceptsNamedArguments(),
+				);
+			}
+
+			if (
+				!$this->checkNullables
+				&& !$acceptingType instanceof NullType
+				&& !$acceptedType instanceof NullType
+				&& !$acceptedType instanceof BenevolentUnionType
+			) {
+				return $traverse(TypeCombinator::removeNull($acceptedType));
+			}
+
+			if ($this->checkBenevolentUnionTypes) {
+				if ($acceptedType instanceof BenevolentUnionType) {
+					$checkForUnion = true;
+					return $traverse(TypeUtils::toStrictUnion($acceptedType));
+				}
+			}
+
+			return $traverse($this->transformCommonType($acceptedType));
+		});
+
+		return [$acceptedType, $checkForUnion];
+	}
+
+	/** @api */
+	public function accepts(Type $acceptingType, Type $acceptedType, bool $strictTypes): RuleLevelHelperAcceptsResult
+	{
+		[$acceptedType, $checkForUnion] = $this->transformAcceptedType($acceptingType, $acceptedType);
+		$acceptingType = $this->transformCommonType($acceptingType);
+
+		$accepts = $acceptingType->accepts($acceptedType, $strictTypes);
+
+		return new RuleLevelHelperAcceptsResult(
+			$checkForUnion ? $accepts->yes() : !$accepts->no(),
+			$accepts->reasons,
+		);
+	}
+
+	/**
+	 * @api
+	 * @param callable(Type $type): bool $unionTypeCriteriaCallback
+	 */
+	public function findTypeToCheck(
+		Scope $scope,
+		Expr $var,
+		string $unknownClassErrorPattern,
+		callable $unionTypeCriteriaCallback,
+	): FoundTypeResult
+	{
+		if ($this->checkThisOnly && !$this->isThis($var)) {
+			return new FoundTypeResult(new ErrorType(), [], [], null);
+		}
+		$type = $scope->getType($var);
+
+		return $this->findTypeToCheckImplementation($scope, $var, $type, $unknownClassErrorPattern, $unionTypeCriteriaCallback, true);
+	}
+
+	/** @param callable(Type $type): bool $unionTypeCriteriaCallback */
+	private function findTypeToCheckImplementation(
+		Scope $scope,
+		Expr $var,
+		Type $type,
+		string $unknownClassErrorPattern,
+		callable $unionTypeCriteriaCallback,
+		bool $isTopLevel = false,
+	): FoundTypeResult
+	{
+		if (!$this->checkNullables && !$type->isNull()->yes()) {
+			$type = TypeCombinator::removeNull($type);
+		}
+
+		if (
+			($this->checkExplicitMixed || $this->checkImplicitMixed)
+			&& $type instanceof MixedType
+			&& ($type->isExplicitMixed() ? $this->checkExplicitMixed : $this->checkImplicitMixed)
+		) {
+			return new FoundTypeResult(
+				$type instanceof TemplateMixedType
+					? $type->toStrictMixedType()
+					: new StrictMixedType(),
+				[],
+				[],
+				null,
+			);
+		}
+
+		if ($type instanceof MixedType || $type instanceof NeverType) {
+			return new FoundTypeResult(new ErrorType(), [], [], null);
+		}
+
+		$errors = [];
+		$hasClassExistsClass = false;
+		$directClassNames = [];
+
+		if ($isTopLevel) {
+			$directClassNames = $type->getObjectClassNames();
+			foreach ($directClassNames as $referencedClass) {
+				if ($this->reflectionProvider->hasClass($referencedClass)) {
+					$classReflection = $this->reflectionProvider->getClass($referencedClass);
+					if (!$classReflection->isTrait()) {
+						continue;
+					}
+				}
+
+				if ($scope->isInClassExists($referencedClass)) {
+					$hasClassExistsClass = true;
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf($unknownClassErrorPattern, $referencedClass))
+					->line($var->getStartLine())
+					->identifier('class.notFound')
+					->discoveringSymbolsTip()
+					->build();
+			}
+		}
+
+		if (count($errors) > 0 || $hasClassExistsClass) {
+			return new FoundTypeResult(new ErrorType(), [], $errors, null);
+		}
+
+		if (!$this->checkUnionTypes && $type->isObject()->yes() && count($type->getObjectClassNames()) === 0) {
+			return new FoundTypeResult(new ErrorType(), [], [], null);
+		}
+
+		if ($type instanceof UnionType) {
+			$shouldFilterUnion = (
+				!$this->checkUnionTypes
+				&& !$type instanceof BenevolentUnionType
+			) || (
+				!$this->checkBenevolentUnionTypes
+				&& $type instanceof BenevolentUnionType
+			);
+
+			$newTypes = [];
+
+			foreach ($type->getTypes() as $innerType) {
+				if ($shouldFilterUnion && !$unionTypeCriteriaCallback($innerType)) {
+					continue;
+				}
+
+				$newTypes[] = $this->findTypeToCheckImplementation(
+					$scope,
+					$var,
+					$innerType,
+					$unknownClassErrorPattern,
+					$unionTypeCriteriaCallback,
+				)->getType();
+			}
+
+			if (count($newTypes) > 0) {
+				$newUnion = TypeCombinator::union(...$newTypes);
+				if (
+					!$this->checkBenevolentUnionTypes
+					&& $type instanceof BenevolentUnionType
+				) {
+					$newUnion = TypeUtils::toBenevolentUnion($newUnion);
+				}
+
+				return new FoundTypeResult($newUnion, $directClassNames, [], null);
+			}
+		}
+
+		if ($type instanceof IntersectionType) {
+			$newTypes = [];
+
+			$changed = false;
+			foreach ($type->getTypes() as $innerType) {
+				if ($innerType instanceof TemplateMixedType) {
+					$changed = true;
+					$newTypes[] = $this->findTypeToCheckImplementation(
+						$scope,
+						$var,
+						$innerType->toStrictMixedType(),
+						$unknownClassErrorPattern,
+						$unionTypeCriteriaCallback,
+					)->getType();
+					continue;
+				}
+				$newTypes[] = $innerType;
+			}
+
+			if ($changed) {
+				return new FoundTypeResult(TypeCombinator::intersect(...$newTypes), $directClassNames, [], null);
+			}
+		}
+
+		$tip = null;
+		if (
+			$type instanceof UnionType
+			&& count($type->getTypes()) === 2
+			&& $type->getTypes()[0] instanceof ObjectType
+			&& $type->getTypes()[1] instanceof ObjectType
+			&& $type->getTypes()[0]->getClassName() === 'PhpParser\\Node\\Arg'
+			&& $type->getTypes()[1]->getClassName() === 'PhpParser\\Node\\VariadicPlaceholder'
+			&& !$unionTypeCriteriaCallback($type)
+		) {
+			$tip = 'Use <fg=cyan>->getArgs()</> instead of <fg=cyan>->args</>.';
+		}
+
+		return new FoundTypeResult($type, $directClassNames, [], $tip);
+	}
+
+}
diff --git a/src/Rules/RuleLevelHelperAcceptsResult.php b/src/Rules/RuleLevelHelperAcceptsResult.php
new file mode 100644
index 00000000..4d70b875
--- /dev/null
+++ b/src/Rules/RuleLevelHelperAcceptsResult.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use function array_merge;
+
+/**
+ * @api
+ */
+final class RuleLevelHelperAcceptsResult
+{
+
+	/**
+	 * @param list<string> $reasons
+	 */
+	public function __construct(
+		public readonly bool $result,
+		public readonly array $reasons,
+	)
+	{
+	}
+
+	public function and(self $other): self
+	{
+		return new self(
+			$this->result && $other->result,
+			array_merge($this->reasons, $other->reasons),
+		);
+	}
+
+	/**
+	 * @param callable(string): string $cb
+	 */
+	public function decorateReasons(callable $cb): self
+	{
+		$reasons = [];
+		foreach ($this->reasons as $reason) {
+			$reasons[] = $cb($reason);
+		}
+
+		return new self($this->result, $reasons);
+	}
+
+}
diff --git a/src/Rules/TipRuleError.php b/src/Rules/TipRuleError.php
new file mode 100644
index 00000000..b84d9b56
--- /dev/null
+++ b/src/Rules/TipRuleError.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+/** @api */
+interface TipRuleError extends RuleError
+{
+
+	public function getTip(): string;
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideArrowFunctionReturnTypehintRule.php b/src/Rules/TooWideTypehints/TooWideArrowFunctionReturnTypehintRule.php
new file mode 100644
index 00000000..5800fffe
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideArrowFunctionReturnTypehintRule.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InArrowFunctionNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<InArrowFunctionNode>
+ */
+final class TooWideArrowFunctionReturnTypehintRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return InArrowFunctionNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$arrowFunction = $node->getOriginalNode();
+		if ($arrowFunction->returnType === null) {
+			return [];
+		}
+
+		$expr = $arrowFunction->expr;
+		if ($expr instanceof Node\Expr\YieldFrom || $expr instanceof Node\Expr\Yield_) {
+			return [];
+		}
+
+		$functionReturnType = $scope->getFunctionType($arrowFunction->returnType, false, false);
+		if (!$functionReturnType instanceof UnionType) {
+			return [];
+		}
+
+		$returnType = $scope->getType($expr);
+		if ($returnType->isNull()->yes()) {
+			return [];
+		}
+		$messages = [];
+		foreach ($functionReturnType->getTypes() as $type) {
+			if (!$type->isSuperTypeOf($returnType)->no()) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Anonymous function never returns %s so it can be removed from the return type.',
+				$type->describe(VerbosityLevel::getRecommendedLevelByType($type)),
+			))->identifier('return.unusedType')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideClosureReturnTypehintRule.php b/src/Rules/TooWideTypehints/TooWideClosureReturnTypehintRule.php
new file mode 100644
index 00000000..375f55a6
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideClosureReturnTypehintRule.php
@@ -0,0 +1,84 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClosureReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<ClosureReturnStatementsNode>
+ */
+final class TooWideClosureReturnTypehintRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return ClosureReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$closureExpr = $node->getClosureExpr();
+		if ($closureExpr->returnType === null) {
+			return [];
+		}
+
+		$statementResult = $node->getStatementResult();
+		if ($statementResult->hasYield()) {
+			return [];
+		}
+
+		$returnStatements = $node->getReturnStatements();
+		if (count($returnStatements) === 0) {
+			return [];
+		}
+
+		$closureReturnType = $scope->getFunctionType($closureExpr->returnType, false, false);
+		if (!$closureReturnType instanceof UnionType) {
+			return [];
+		}
+
+		$returnTypes = [];
+		foreach ($returnStatements as $returnStatement) {
+			$returnNode = $returnStatement->getReturnNode();
+			if ($returnNode->expr === null) {
+				continue;
+			}
+
+			$returnTypes[] = $returnStatement->getScope()->getType($returnNode->expr);
+		}
+
+		if (count($returnTypes) === 0) {
+			return [];
+		}
+
+		$returnType = TypeCombinator::union(...$returnTypes);
+		if ($returnType->isNull()->yes()) {
+			return [];
+		}
+
+		$messages = [];
+		foreach ($closureReturnType->getTypes() as $type) {
+			if (!$type->isSuperTypeOf($returnType)->no()) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Anonymous function never returns %s so it can be removed from the return type.',
+				$type->describe(VerbosityLevel::getRecommendedLevelByType($type)),
+			))->identifier('return.unusedType')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideFunctionParameterOutTypeRule.php b/src/Rules/TooWideTypehints/TooWideFunctionParameterOutTypeRule.php
new file mode 100644
index 00000000..9917d615
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideFunctionParameterOutTypeRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class TooWideFunctionParameterOutTypeRule implements Rule
+{
+
+	public function __construct(
+		private TooWideParameterOutTypeCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$inFunction = $node->getFunctionReflection();
+
+		return $this->check->check(
+			$node->getExecutionEnds(),
+			$node->getReturnStatements(),
+			$inFunction->getParameters(),
+			sprintf('Function %s()', $inFunction->getName()),
+		);
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideFunctionReturnTypehintRule.php b/src/Rules/TooWideTypehints/TooWideFunctionReturnTypehintRule.php
new file mode 100644
index 00000000..a4179e3f
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideFunctionReturnTypehintRule.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FunctionReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use PHPStan\Type\VoidType;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<FunctionReturnStatementsNode>
+ */
+final class TooWideFunctionReturnTypehintRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FunctionReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$function = $node->getFunctionReflection();
+
+		$functionReturnType = $function->getReturnType();
+		$functionReturnType = TypeUtils::resolveLateResolvableTypes($functionReturnType);
+		if (!$functionReturnType instanceof UnionType) {
+			return [];
+		}
+		$statementResult = $node->getStatementResult();
+		if ($statementResult->hasYield()) {
+			return [];
+		}
+
+		$returnStatements = $node->getReturnStatements();
+		if (count($returnStatements) === 0) {
+			return [];
+		}
+
+		$returnTypes = [];
+		foreach ($returnStatements as $returnStatement) {
+			$returnNode = $returnStatement->getReturnNode();
+			if ($returnNode->expr === null) {
+				$returnTypes[] = new VoidType();
+				continue;
+			}
+
+			$returnTypes[] = $returnStatement->getScope()->getType($returnNode->expr);
+		}
+
+		if (!$statementResult->isAlwaysTerminating()) {
+			$returnTypes[] = new VoidType();
+		}
+
+		$returnType = TypeCombinator::union(...$returnTypes);
+
+		$messages = [];
+		foreach ($functionReturnType->getTypes() as $type) {
+			if (!$type->isSuperTypeOf($returnType)->no()) {
+				continue;
+			}
+
+			if ($type->isNull()->yes() && !$node->hasNativeReturnTypehint()) {
+				foreach ($node->getExecutionEnds() as $executionEnd) {
+					if ($executionEnd->getStatementResult()->isAlwaysTerminating()) {
+						continue;
+					}
+
+					continue 2;
+				}
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Function %s() never returns %s so it can be removed from the return type.',
+				$function->getName(),
+				$type->describe(VerbosityLevel::getRecommendedLevelByType($type)),
+			))->identifier('return.unusedType')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideMethodParameterOutTypeRule.php b/src/Rules/TooWideTypehints/TooWideMethodParameterOutTypeRule.php
new file mode 100644
index 00000000..5a6f846a
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideMethodParameterOutTypeRule.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class TooWideMethodParameterOutTypeRule implements Rule
+{
+
+	public function __construct(
+		private TooWideParameterOutTypeCheck $check,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$inMethod = $node->getMethodReflection();
+
+		return $this->check->check(
+			$node->getExecutionEnds(),
+			$node->getReturnStatements(),
+			$inMethod->getParameters(),
+			sprintf('Method %s::%s()', $inMethod->getDeclaringClass()->getDisplayName(), $inMethod->getName()),
+		);
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideMethodReturnTypehintRule.php b/src/Rules/TooWideTypehints/TooWideMethodReturnTypehintRule.php
new file mode 100644
index 00000000..a1e13d35
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideMethodReturnTypehintRule.php
@@ -0,0 +1,120 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\MethodReturnStatementsNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use PHPStan\Type\VoidType;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<MethodReturnStatementsNode>
+ */
+final class TooWideMethodReturnTypehintRule implements Rule
+{
+
+	public function __construct(private bool $checkProtectedAndPublicMethods)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return MethodReturnStatementsNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($scope->isInTrait()) {
+			return [];
+		}
+		$method = $node->getMethodReflection();
+		$isFirstDeclaration = $method->getPrototype()->getDeclaringClass() === $method->getDeclaringClass();
+		if (!$method->isPrivate()) {
+			if (!$method->getDeclaringClass()->isFinal() && !$method->isFinal()->yes()) {
+				if (!$this->checkProtectedAndPublicMethods) {
+					return [];
+				}
+
+				if ($isFirstDeclaration) {
+					return [];
+				}
+			}
+		}
+
+		$methodReturnType = $method->getReturnType();
+		$methodReturnType = TypeUtils::resolveLateResolvableTypes($methodReturnType);
+		if (!$methodReturnType instanceof UnionType) {
+			return [];
+		}
+		$statementResult = $node->getStatementResult();
+		if ($statementResult->hasYield()) {
+			return [];
+		}
+
+		$returnStatements = $node->getReturnStatements();
+		if (count($returnStatements) === 0) {
+			return [];
+		}
+
+		$returnTypes = [];
+		foreach ($returnStatements as $returnStatement) {
+			$returnNode = $returnStatement->getReturnNode();
+			if ($returnNode->expr === null) {
+				$returnTypes[] = new VoidType();
+				continue;
+			}
+
+			$returnTypes[] = $returnStatement->getScope()->getType($returnNode->expr);
+		}
+
+		if (!$statementResult->isAlwaysTerminating()) {
+			$returnTypes[] = new VoidType();
+		}
+
+		$returnType = TypeCombinator::union(...$returnTypes);
+		if (
+			!$method->isPrivate()
+			&& ($returnType->isNull()->yes() || $returnType instanceof ConstantBooleanType)
+			&& !$isFirstDeclaration
+		) {
+			return [];
+		}
+
+		$messages = [];
+		foreach ($methodReturnType->getTypes() as $type) {
+			if (!$type->isSuperTypeOf($returnType)->no()) {
+				continue;
+			}
+
+			if ($type->isNull()->yes() && !$node->hasNativeReturnTypehint()) {
+				foreach ($node->getExecutionEnds() as $executionEnd) {
+					if ($executionEnd->getStatementResult()->isAlwaysTerminating()) {
+						continue;
+					}
+
+					continue 2;
+				}
+			}
+
+			$messages[] = RuleErrorBuilder::message(sprintf(
+				'Method %s::%s() never returns %s so it can be removed from the return type.',
+				$method->getDeclaringClass()->getDisplayName(),
+				$method->getName(),
+				$type->describe(VerbosityLevel::getRecommendedLevelByType($type)),
+			))->identifier('return.unusedType')->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWideParameterOutTypeCheck.php b/src/Rules/TooWideTypehints/TooWideParameterOutTypeCheck.php
new file mode 100644
index 00000000..54662835
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWideParameterOutTypeCheck.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ExecutionEndNode;
+use PHPStan\Node\ReturnStatement;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+final class TooWideParameterOutTypeCheck
+{
+
+	/**
+	 * @param list<ExecutionEndNode> $executionEnds
+	 * @param list<ReturnStatement> $returnStatements
+	 * @param ExtendedParameterReflection[] $parameters
+	 * @return list<IdentifierRuleError>
+	 */
+	public function check(
+		array $executionEnds,
+		array $returnStatements,
+		array $parameters,
+		string $functionDescription,
+	): array
+	{
+		$finalScope = null;
+		foreach ($executionEnds as $executionEnd) {
+			$endScope = $executionEnd->getStatementResult()->getScope();
+			if ($finalScope === null) {
+				$finalScope = $endScope;
+				continue;
+			}
+
+			$finalScope = $finalScope->mergeWith($endScope);
+		}
+
+		foreach ($returnStatements as $statement) {
+			if ($finalScope === null) {
+				$finalScope = $statement->getScope();
+				continue;
+			}
+
+			$finalScope = $finalScope->mergeWith($statement->getScope());
+		}
+
+		if ($finalScope === null) {
+			return [];
+		}
+
+		$errors = [];
+		foreach ($parameters as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+
+			foreach ($this->processSingleParameter($finalScope, $functionDescription, $parameter) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleParameter(
+		Scope $scope,
+		string $functionDescription,
+		ExtendedParameterReflection $parameter,
+	): array
+	{
+		$isParamOutType = true;
+		$outType = $parameter->getOutType();
+		if ($outType === null) {
+			$isParamOutType = false;
+			$outType = $parameter->getType();
+		}
+
+		$outType = TypeUtils::resolveLateResolvableTypes($outType);
+		if (!$outType instanceof UnionType) {
+			return [];
+		}
+
+		$variableExpr = new Variable($parameter->getName());
+		$variableType = $scope->getType($variableExpr);
+
+		$messages = [];
+		foreach ($outType->getTypes() as $type) {
+			if (!$type->isSuperTypeOf($variableType)->no()) {
+				continue;
+			}
+
+			$errorBuilder = RuleErrorBuilder::message(sprintf(
+				'%s never assigns %s to &$%s so it can be removed from the %s.',
+				$functionDescription,
+				$type->describe(VerbosityLevel::getRecommendedLevelByType($type)),
+				$parameter->getName(),
+				$isParamOutType ? '@param-out type' : 'by-ref type',
+			))->identifier(sprintf('%s.unusedType', $isParamOutType ? 'paramOut' : 'parameterByRef'));
+			if (!$isParamOutType) {
+				$errorBuilder->tip('You can narrow the parameter out type with @param-out PHPDoc tag.');
+			}
+
+			$messages[] = $errorBuilder->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/TooWideTypehints/TooWidePropertyTypeRule.php b/src/Rules/TooWideTypehints/TooWidePropertyTypeRule.php
new file mode 100644
index 00000000..e9f15727
--- /dev/null
+++ b/src/Rules/TooWideTypehints/TooWidePropertyTypeRule.php
@@ -0,0 +1,136 @@
+<?php 
+
+namespace PHPStan\Rules\TooWideTypehints;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertiesNode;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\NullType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/**
+ * @implements Rule<ClassPropertiesNode>
+ */
+final class TooWidePropertyTypeRule implements Rule
+{
+
+	public function __construct(
+		private ReadWritePropertiesExtensionProvider $extensionProvider,
+		private PropertyReflectionFinder $propertyReflectionFinder,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ClassPropertiesNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$errors = [];
+		$classReflection = $node->getClassReflection();
+
+		foreach ($node->getProperties() as $property) {
+			if (!$property->isPrivate()) {
+				continue;
+			}
+			if ($property->isDeclaredInTrait()) {
+				continue;
+			}
+			if ($property->isPromoted()) {
+				continue;
+			}
+			$propertyName = $property->getName();
+			if (!$classReflection->hasNativeProperty($propertyName)) {
+				continue;
+			}
+
+			$propertyReflection = $classReflection->getNativeProperty($propertyName);
+			$propertyType = $propertyReflection->getWritableType();
+			if (!$propertyType instanceof UnionType) {
+				continue;
+			}
+			foreach ($this->extensionProvider->getExtensions() as $extension) {
+				if ($extension->isAlwaysRead($propertyReflection, $propertyName)) {
+					continue 2;
+				}
+				if ($extension->isAlwaysWritten($propertyReflection, $propertyName)) {
+					continue 2;
+				}
+				if ($extension->isInitialized($propertyReflection, $propertyName)) {
+					continue 2;
+				}
+			}
+
+			$assignedTypes = [];
+			foreach ($node->getPropertyAssigns() as $assign) {
+				$assignNode = $assign->getAssign();
+				$assignPropertyReflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($assignNode->getPropertyFetch(), $assign->getScope());
+				foreach ($assignPropertyReflections as $assignPropertyReflection) {
+					if ($propertyName !== $assignPropertyReflection->getName()) {
+						continue;
+					}
+					if ($propertyReflection->getDeclaringClass()->getName() !== $assignPropertyReflection->getDeclaringClass()->getName()) {
+						continue;
+					}
+
+					$assignedTypes[] = $assignPropertyReflection->getScope()->getType($assignNode->getAssignedExpr());
+				}
+			}
+
+			if ($property->getDefault() !== null) {
+				$assignedTypes[] = $scope->getType($property->getDefault());
+			}
+
+			if (count($assignedTypes) === 0) {
+				continue;
+			}
+
+			$assignedType = TypeCombinator::union(...$assignedTypes);
+			$propertyDescription = $this->describePropertyByName($propertyReflection, $propertyName);
+			$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($propertyType, $assignedType);
+			foreach ($propertyType->getTypes() as $type) {
+				if (!$type->isSuperTypeOf($assignedType)->no()) {
+					continue;
+				}
+
+				if ($property->getNativeType() === null && (new NullType())->isSuperTypeOf($type)->yes()) {
+					continue;
+				}
+
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'%s (%s) is never assigned %s so it can be removed from the property type.',
+					$propertyDescription,
+					$propertyType->describe($verbosityLevel),
+					$type->describe($verbosityLevel),
+				))
+					->identifier('property.unusedType')
+					->line($property->getStartLine())
+					->build();
+			}
+
+		}
+		return $errors;
+	}
+
+	private function describePropertyByName(PropertyReflection $property, string $propertyName): string
+	{
+		if (!$property->isStatic()) {
+			return sprintf('Property %s::$%s', $property->getDeclaringClass()->getDisplayName(), $propertyName);
+		}
+
+		return sprintf('Static property %s::$%s', $property->getDeclaringClass()->getDisplayName(), $propertyName);
+	}
+
+}
diff --git a/src/Rules/Traits/ConflictingTraitConstantsRule.php b/src/Rules/Traits/ConflictingTraitConstantsRule.php
new file mode 100644
index 00000000..f07cd1cb
--- /dev/null
+++ b/src/Rules/Traits/ConflictingTraitConstantsRule.php
@@ -0,0 +1,253 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClassConstant;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\ParserNodeTypeToPHPStanType;
+use PHPStan\Type\TypehintHelper;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class ConflictingTraitConstantsRule implements Rule
+{
+
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$scope->isInClass()) {
+			return [];
+		}
+
+		$classReflection = $scope->getClassReflection();
+		$traitConstants = [];
+		foreach ($classReflection->getTraits(true) as $trait) {
+			foreach ($trait->getNativeReflection()->getReflectionConstants() as $constant) {
+				$traitConstants[] = $constant;
+			}
+		}
+
+		$errors = [];
+		foreach ($node->consts as $const) {
+			foreach ($traitConstants as $traitConstant) {
+				if ($traitConstant->getName() !== $const->name->toString()) {
+					continue;
+				}
+
+				foreach ($this->processSingleConstant($classReflection, $traitConstant, $node, $const->value) as $error) {
+					$errors[] = $error;
+				}
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleConstant(ClassReflection $classReflection, ReflectionClassConstant $traitConstant, Node\Stmt\ClassConst $classConst, Node\Expr $valueExpr): array
+	{
+		$errors = [];
+		if ($traitConstant->isPublic()) {
+			if ($classConst->isProtected()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Protected constant %s::%s overriding public constant %s::%s should also be public.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			} elseif ($classConst->isPrivate()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Private constant %s::%s overriding public constant %s::%s should also be public.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			}
+		} elseif ($traitConstant->isProtected()) {
+			if ($classConst->isPublic()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Public constant %s::%s overriding protected constant %s::%s should also be protected.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			} elseif ($classConst->isPrivate()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Private constant %s::%s overriding protected constant %s::%s should also be protected.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			}
+		} elseif ($traitConstant->isPrivate()) {
+			if ($classConst->isPublic()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Public constant %s::%s overriding private constant %s::%s should also be private.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			} elseif ($classConst->isProtected()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Protected constant %s::%s overriding private constant %s::%s should also be private.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.visibility')
+					->build();
+			}
+		}
+
+		if ($traitConstant->isFinal()) {
+			if (!$classConst->isFinal()) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Non-final constant %s::%s overriding final constant %s::%s should also be final.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.nonFinal')
+					->build();
+			}
+		} elseif ($classConst->isFinal()) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Final constant %s::%s overriding non-final constant %s::%s should also be non-final.',
+				$classReflection->getDisplayName(),
+				$traitConstant->getName(),
+				$traitConstant->getDeclaringClass()->getName(),
+				$traitConstant->getName(),
+			))
+				->nonIgnorable()
+				->identifier('classConstant.final')
+				->build();
+		}
+
+		$traitNativeType = $traitConstant->getType();
+		$constantNativeType = $classConst->type;
+		$traitDeclaringClass = $traitConstant->getDeclaringClass();
+		if ($traitNativeType === null) {
+			if ($constantNativeType !== null) {
+				$constantNativeTypeType = ParserNodeTypeToPHPStanType::resolve($constantNativeType, $classReflection);
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Constant %s::%s (%s) overriding constant %s::%s should not have a native type.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$constantNativeTypeType->describe(VerbosityLevel::typeOnly()),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.nativeType')
+					->build();
+			}
+		} elseif ($constantNativeType === null) {
+			$traitNativeTypeType = TypehintHelper::decideTypeFromReflection($traitNativeType, null, $this->reflectionProvider->getClass($traitDeclaringClass->getName()));
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s overriding constant %s::%s (%s) should also have native type %s.',
+				$classReflection->getDisplayName(),
+				$traitConstant->getName(),
+				$traitConstant->getDeclaringClass()->getName(),
+				$traitConstant->getName(),
+				$traitNativeTypeType->describe(VerbosityLevel::typeOnly()),
+				$traitNativeTypeType->describe(VerbosityLevel::typeOnly()),
+			))
+				->nonIgnorable()
+				->identifier('classConstant.missingNativeType')
+				->build();
+		} else {
+			$traitNativeTypeType = TypehintHelper::decideTypeFromReflection($traitNativeType, null, $this->reflectionProvider->getClass($traitDeclaringClass->getName()));
+			$constantNativeTypeType = ParserNodeTypeToPHPStanType::resolve($constantNativeType, $classReflection);
+			if (!$traitNativeTypeType->equals($constantNativeTypeType)) {
+				$errors[] = RuleErrorBuilder::message(sprintf(
+					'Constant %s::%s (%s) overriding constant %s::%s (%s) should have the same native type %s.',
+					$classReflection->getDisplayName(),
+					$traitConstant->getName(),
+					$constantNativeTypeType->describe(VerbosityLevel::typeOnly()),
+					$traitConstant->getDeclaringClass()->getName(),
+					$traitConstant->getName(),
+					$traitNativeTypeType->describe(VerbosityLevel::typeOnly()),
+					$traitNativeTypeType->describe(VerbosityLevel::typeOnly()),
+				))
+					->nonIgnorable()
+					->identifier('classConstant.nativeType')
+					->build();
+			}
+		}
+
+		$classConstantValueType = $this->initializerExprTypeResolver->getType($valueExpr, InitializerExprContext::fromClassReflection($classReflection));
+		$traitConstantValueType = $this->initializerExprTypeResolver->getType(
+			$traitConstant->getValueExpression(),
+			InitializerExprContext::fromClass(
+				$traitDeclaringClass->getName(),
+				$traitDeclaringClass->getFileName() !== false ? $traitDeclaringClass->getFileName() : null,
+			),
+		);
+		if (!$classConstantValueType->equals($traitConstantValueType)) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Constant %s::%s with value %s overriding constant %s::%s with different value %s should have the same value.',
+				$classReflection->getDisplayName(),
+				$traitConstant->getName(),
+				$classConstantValueType->describe(VerbosityLevel::value()),
+				$traitConstant->getDeclaringClass()->getName(),
+				$traitConstant->getName(),
+				$traitConstantValueType->describe(VerbosityLevel::value()),
+			))
+				->nonIgnorable()
+				->identifier('classConstant.value')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Traits/ConstantsInTraitsRule.php b/src/Rules/Traits/ConstantsInTraitsRule.php
new file mode 100644
index 00000000..ddeb12ca
--- /dev/null
+++ b/src/Rules/Traits/ConstantsInTraitsRule.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+
+/**
+ * @implements Rule<Node\Stmt\ClassConst>
+ */
+final class ConstantsInTraitsRule implements Rule
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\ClassConst::class;
+	}
+
+	/**
+	 * @param Node\Stmt\ClassConst $node
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($this->phpVersion->supportsConstantsInTraits()) {
+			return [];
+		}
+
+		if (!$scope->isInTrait()) {
+			return [];
+		}
+
+		return [
+			RuleErrorBuilder::message(
+				'Constant is declared inside a trait but is only supported on PHP 8.2 and later.',
+			)->identifier('classConstant.inTrait')->nonIgnorable()->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Traits/NotAnalysedTraitRule.php b/src/Rules/Traits/NotAnalysedTraitRule.php
new file mode 100644
index 00000000..0ecf325e
--- /dev/null
+++ b/src/Rules/Traits/NotAnalysedTraitRule.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\CollectedDataNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<CollectedDataNode>
+ */
+final class NotAnalysedTraitRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return CollectedDataNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->isOnlyFilesAnalysis()) {
+			return [];
+		}
+
+		$traitDeclarationData = $node->get(TraitDeclarationCollector::class);
+		$traitUseData = $node->get(TraitUseCollector::class);
+
+		$declaredTraits = [];
+		foreach ($traitDeclarationData as $file => $declaration) {
+			foreach ($declaration as [$name, $line]) {
+				$declaredTraits[strtolower($name)] = [$file, $name, $line];
+			}
+		}
+
+		foreach ($traitUseData as $usedNamesData) {
+			foreach ($usedNamesData as $usedNames) {
+				foreach ($usedNames as $usedName) {
+					unset($declaredTraits[strtolower($usedName)]);
+				}
+			}
+		}
+
+		$errors = [];
+		foreach ($declaredTraits as [$file, $name, $line]) {
+			$errors[] = RuleErrorBuilder::message(sprintf(
+				'Trait %s is used zero times and is not analysed.',
+				$name,
+			))
+				->file($file)
+				->line($line)
+				->identifier('trait.unused')
+				->tip('See: https://phpstan.org/blog/how-phpstan-analyses-traits')
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Traits/TraitAttributesRule.php b/src/Rules/Traits/TraitAttributesRule.php
new file mode 100644
index 00000000..5479fa2b
--- /dev/null
+++ b/src/Rules/Traits/TraitAttributesRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use Attribute;
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\InTraitNode;
+use PHPStan\Rules\AttributesCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+
+/**
+ * @implements Rule<InTraitNode>
+ */
+final class TraitAttributesRule implements Rule
+{
+
+	public function __construct(
+		private AttributesCheck $attributesCheck,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return InTraitNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$originalNode = $node->getOriginalNode();
+		$errors = $this->attributesCheck->check(
+			$scope,
+			$originalNode->attrGroups,
+			Attribute::TARGET_CLASS,
+			'class',
+		);
+
+		if (count($node->getTraitReflection()->getNativeReflection()->getAttributes('AllowDynamicProperties')) > 0) {
+			$errors[] = RuleErrorBuilder::message('Attribute class AllowDynamicProperties cannot be used with trait.')
+				->identifier('trait.allowDynamicProperties')
+				->nonIgnorable()
+				->build();
+		}
+
+		return $errors;
+	}
+
+}
diff --git a/src/Rules/Traits/TraitDeclarationCollector.php b/src/Rules/Traits/TraitDeclarationCollector.php
new file mode 100644
index 00000000..c0999188
--- /dev/null
+++ b/src/Rules/Traits/TraitDeclarationCollector.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+
+/**
+ * @implements Collector<Node\Stmt\Trait_, array{string, int}>
+ */
+final class TraitDeclarationCollector implements Collector
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Trait_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope)
+	{
+		if ($node->namespacedName === null) {
+			return null;
+		}
+
+		return [$node->namespacedName->toString(), $node->getStartLine()];
+	}
+
+}
diff --git a/src/Rules/Traits/TraitUseCollector.php b/src/Rules/Traits/TraitUseCollector.php
new file mode 100644
index 00000000..c22b82f7
--- /dev/null
+++ b/src/Rules/Traits/TraitUseCollector.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Rules\Traits;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Collectors\Collector;
+use function array_map;
+use function array_values;
+
+/**
+ * @implements Collector<Node\Stmt\TraitUse, list<string>>
+ */
+final class TraitUseCollector implements Collector
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\TraitUse::class;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function processNode(Node $node, Scope $scope): array
+	{
+		return array_values(array_map(static fn (Node\Name $traitName) => $traitName->toString(), $node->traits));
+	}
+
+}
diff --git a/src/Rules/Types/InvalidTypesInUnionRule.php b/src/Rules/Types/InvalidTypesInUnionRule.php
new file mode 100644
index 00000000..78d62241
--- /dev/null
+++ b/src/Rules/Types/InvalidTypesInUnionRule.php
@@ -0,0 +1,126 @@
+<?php 
+
+namespace PHPStan\Rules\Types;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ClassPropertyNode;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function array_merge;
+use function in_array;
+use function sprintf;
+
+/**
+ * @implements Rule<Node>
+ */
+final class InvalidTypesInUnionRule implements Rule
+{
+
+	private const ONLY_STANDALONE_TYPES = [
+		'mixed',
+		'never',
+		'void',
+	];
+
+	public function getNodeType(): string
+	{
+		return Node::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!$node instanceof Node\FunctionLike && !$node instanceof ClassPropertyNode) {
+			return [];
+		}
+
+		if ($node instanceof Node\FunctionLike) {
+			return $this->processFunctionLikeNode($node);
+		}
+
+		return $this->processClassPropertyNode($node);
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processFunctionLikeNode(Node\FunctionLike $functionLike): array
+	{
+		$errors = [];
+
+		foreach ($functionLike->getParams() as $param) {
+			if (!$param->type instanceof Node\ComplexType) {
+				continue;
+			}
+
+			$errors = array_merge($errors, $this->processComplexType($param->type));
+		}
+
+		if ($functionLike->getReturnType() instanceof Node\ComplexType) {
+			$errors = array_merge($errors, $this->processComplexType($functionLike->getReturnType()));
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processClassPropertyNode(ClassPropertyNode $classPropertyNode): array
+	{
+		if (!$classPropertyNode->getNativeTypeNode() instanceof Node\ComplexType) {
+			return [];
+		}
+
+		return $this->processComplexType($classPropertyNode->getNativeTypeNode());
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processComplexType(Node\ComplexType $complexType): array
+	{
+		if (!$complexType instanceof Node\UnionType && !$complexType instanceof Node\NullableType) {
+			return [];
+		}
+
+		if ($complexType instanceof Node\UnionType) {
+			foreach ($complexType->types as $type) {
+				if (!$type instanceof Node\Identifier) {
+					continue;
+				}
+
+				$typeString = $type->toLowerString();
+				if (in_array($typeString, self::ONLY_STANDALONE_TYPES, true)) {
+					return [
+						RuleErrorBuilder::message(sprintf('Type %s cannot be part of a union type declaration.', $type->toString()))
+							->line($complexType->getStartLine())
+							->identifier(sprintf('unionType.%s', $typeString))
+							->nonIgnorable()
+							->build(),
+					];
+				}
+			}
+
+			return [];
+		}
+
+		if ($complexType->type instanceof Node\Identifier) {
+			$complexTypeString = $complexType->type->toLowerString();
+			if (in_array($complexTypeString, self::ONLY_STANDALONE_TYPES, true)) {
+				return [
+					RuleErrorBuilder::message(sprintf('Type %s cannot be part of a nullable type declaration.', $complexType->type->toString()))
+						->line($complexType->getStartLine())
+						->identifier(sprintf('nullableType.%s', $complexTypeString))
+						->nonIgnorable()
+						->build(),
+				];
+			}
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/UnusedFunctionParametersCheck.php b/src/Rules/UnusedFunctionParametersCheck.php
new file mode 100644
index 00000000..39146406
--- /dev/null
+++ b/src/Rules/UnusedFunctionParametersCheck.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Rules;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantStringType;
+use function array_combine;
+use function array_map;
+use function array_merge;
+use function is_array;
+use function is_string;
+use function sprintf;
+
+final class UnusedFunctionParametersCheck
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private bool $reportExactLine,
+	)
+	{
+	}
+
+	/**
+	 * @param Variable[] $parameterVars
+	 * @param Node[] $statements
+	 * @param 'constructor.unusedParameter'|'closure.unusedUse' $identifier
+	 * @return list<IdentifierRuleError>
+	 */
+	public function getUnusedParameters(
+		Scope $scope,
+		array $parameterVars,
+		array $statements,
+		string $unusedParameterMessage,
+		string $identifier,
+	): array
+	{
+		$parameterNames = array_map(static function (Variable $variable): string {
+			if (!is_string($variable->name)) {
+				throw new ShouldNotHappenException();
+			}
+			return $variable->name;
+		}, $parameterVars);
+		$unusedParameters = array_combine($parameterNames, $parameterVars);
+		foreach ($this->getUsedVariables($scope, $statements) as $variableName) {
+			if (!isset($unusedParameters[$variableName])) {
+				continue;
+			}
+
+			unset($unusedParameters[$variableName]);
+		}
+		$errors = [];
+		foreach ($unusedParameters as $name => $variable) {
+			$errorBuilder = RuleErrorBuilder::message(sprintf($unusedParameterMessage, $name))->identifier($identifier);
+			if ($this->reportExactLine) {
+				$errorBuilder->line($variable->getStartLine());
+			}
+			$errors[] = $errorBuilder->build();
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @param Node[]|Node|scalar|null $node
+	 * @return string[]
+	 */
+	private function getUsedVariables(Scope $scope, $node): array
+	{
+		$variableNames = [];
+		if ($node instanceof Node) {
+			if ($node instanceof Node\Expr\FuncCall && $node->name instanceof Node\Name) {
+				$functionName = $this->reflectionProvider->resolveFunctionName($node->name, $scope);
+				if ($functionName === 'func_get_args' || $functionName === 'get_defined_vars') {
+					return $scope->getDefinedVariables();
+				}
+			}
+			if ($node instanceof Variable && is_string($node->name) && $node->name !== 'this') {
+				return [$node->name];
+			}
+			if ($node instanceof Node\ClosureUse && is_string($node->var->name)) {
+				return [$node->var->name];
+			}
+			if (
+				$node instanceof Node\Expr\FuncCall
+				&& $node->name instanceof Node\Name
+				&& (string) $node->name === 'compact'
+			) {
+				foreach ($node->getArgs() as $arg) {
+					$argType = $scope->getType($arg->value);
+					if (!($argType instanceof ConstantStringType)) {
+						continue;
+					}
+
+					$variableNames[] = $argType->getValue();
+				}
+			}
+			foreach ($node->getSubNodeNames() as $subNodeName) {
+				if ($node instanceof Node\Expr\Closure && $subNodeName !== 'uses') {
+					continue;
+				}
+				$subNode = $node->{$subNodeName};
+				$variableNames = array_merge($variableNames, $this->getUsedVariables($scope, $subNode));
+			}
+		} elseif (is_array($node)) {
+			foreach ($node as $subNode) {
+				$variableNames = array_merge($variableNames, $this->getUsedVariables($scope, $subNode));
+			}
+		}
+
+		return $variableNames;
+	}
+
+}
diff --git a/src/Rules/Variables/CompactVariablesRule.php b/src/Rules/Variables/CompactVariablesRule.php
new file mode 100644
index 00000000..fec4adf5
--- /dev/null
+++ b/src/Rules/Variables/CompactVariablesRule.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Type;
+use function array_merge;
+use function sprintf;
+use function strtolower;
+
+/**
+ * @implements Rule<Node\Expr\FuncCall>
+ */
+final class CompactVariablesRule implements Rule
+{
+
+	public function __construct(private bool $checkMaybeUndefinedVariables)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\FuncCall::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if ($node->name instanceof Node\Expr) {
+			return [];
+		}
+
+		$functionName = strtolower($node->name->toString());
+
+		if ($functionName !== 'compact') {
+			return [];
+		}
+
+		$functionArguments = $node->getArgs();
+		$messages = [];
+
+		foreach ($functionArguments as $argument) {
+			$argumentType = $scope->getType($argument->value);
+			$constantStrings = $this->findConstantStrings($argumentType);
+			foreach ($constantStrings as $constantString) {
+				$variableName = $constantString->getValue();
+				$scopeHasVariable = $scope->hasVariableType($variableName);
+
+				if ($scopeHasVariable->no()) {
+					$messages[] = RuleErrorBuilder::message(
+						sprintf('Call to function compact() contains undefined variable $%s.', $variableName),
+					)->identifier('variable.undefined')->line($argument->getStartLine())->build();
+				} elseif ($this->checkMaybeUndefinedVariables && $scopeHasVariable->maybe()) {
+					$messages[] = RuleErrorBuilder::message(
+						sprintf('Call to function compact() contains possibly undefined variable $%s.', $variableName),
+					)->identifier('variable.undefined')->line($argument->getStartLine())->build();
+				}
+			}
+		}
+
+		return $messages;
+	}
+
+	/**
+	 * @return array<int, ConstantStringType>
+	 */
+	private function findConstantStrings(Type $type): array
+	{
+		if ($type instanceof ConstantStringType) {
+			return [$type];
+		}
+
+		if ($type instanceof ConstantArrayType) {
+			$result = [];
+			foreach ($type->getValueTypes() as $valueType) {
+				$constantStrings = $this->findConstantStrings($valueType);
+				$result = array_merge($result, $constantStrings);
+			}
+
+			return $result;
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Variables/DefinedVariableRule.php b/src/Rules/Variables/DefinedVariableRule.php
new file mode 100644
index 00000000..8f19054a
--- /dev/null
+++ b/src/Rules/Variables/DefinedVariableRule.php
@@ -0,0 +1,73 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function in_array;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Variable>
+ */
+final class DefinedVariableRule implements Rule
+{
+
+	public function __construct(
+		private bool $cliArgumentsVariablesRegistered,
+		private bool $checkMaybeUndefinedVariables,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Variable::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		if (!is_string($node->name)) {
+			return [];
+		}
+
+		if ($this->cliArgumentsVariablesRegistered && in_array($node->name, [
+			'argc',
+			'argv',
+		], true)) {
+			$isInMain = !$scope->isInClass() && !$scope->isInAnonymousFunction() && $scope->getFunction() === null;
+			if ($isInMain) {
+				return [];
+			}
+		}
+
+		if ($scope->isInExpressionAssign($node) || $scope->isUndefinedExpressionAllowed($node)) {
+			return [];
+		}
+
+		if ($scope->hasVariableType($node->name)->no()) {
+			return [
+				RuleErrorBuilder::message(sprintf('Undefined variable: $%s', $node->name))
+					->identifier('variable.undefined')
+					->build(),
+			];
+		} elseif (
+			$this->checkMaybeUndefinedVariables
+			&& !$scope->hasVariableType($node->name)->yes()
+		) {
+			return [
+				RuleErrorBuilder::message(sprintf('Variable $%s might not be defined.', $node->name))
+					->identifier('variable.undefined')
+					->build(),
+			];
+		}
+
+		return [];
+	}
+
+}
diff --git a/src/Rules/Variables/EmptyRule.php b/src/Rules/Variables/EmptyRule.php
new file mode 100644
index 00000000..0a239f43
--- /dev/null
+++ b/src/Rules/Variables/EmptyRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\IssetCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+
+/**
+ * @implements Rule<Node\Expr\Empty_>
+ */
+final class EmptyRule implements Rule
+{
+
+	public function __construct(private IssetCheck $issetCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Empty_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$error = $this->issetCheck->check($node->expr, $scope, 'in empty()', 'empty', static function (Type $type): ?string {
+			$isNull = $type->isNull();
+			if ($isNull->maybe()) {
+				return null;
+			}
+			$isFalsey = $type->toBoolean()->isFalse();
+			if ($isFalsey->maybe()) {
+				return null;
+			}
+
+			if ($isNull->yes()) {
+				if ($isFalsey->yes()) {
+					return 'is always falsy';
+				}
+				if ($isFalsey->no()) {
+					return 'is not falsy';
+				}
+
+				return 'is always null';
+			}
+
+			if ($isFalsey->yes()) {
+				return 'is always falsy';
+			}
+
+			if ($isFalsey->no()) {
+				return 'is not falsy';
+			}
+
+			return 'is not nullable';
+		});
+
+		if ($error === null) {
+			return [];
+		}
+
+		return [$error];
+	}
+
+}
diff --git a/src/Rules/Variables/IssetRule.php b/src/Rules/Variables/IssetRule.php
new file mode 100644
index 00000000..452d48c8
--- /dev/null
+++ b/src/Rules/Variables/IssetRule.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\IssetCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+
+/**
+ * @implements Rule<Node\Expr\Isset_>
+ */
+final class IssetRule implements Rule
+{
+
+	public function __construct(private IssetCheck $issetCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr\Isset_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$messages = [];
+		foreach ($node->vars as $var) {
+			$error = $this->issetCheck->check($var, $scope, 'in isset()', 'isset', static function (Type $type): ?string {
+				$isNull = $type->isNull();
+				if ($isNull->maybe()) {
+					return null;
+				}
+
+				if ($isNull->yes()) {
+					return 'is always null';
+				}
+
+				return 'is not nullable';
+			});
+			if ($error === null) {
+				continue;
+			}
+			$messages[] = $error;
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/Rules/Variables/NullCoalesceRule.php b/src/Rules/Variables/NullCoalesceRule.php
new file mode 100644
index 00000000..f4804775
--- /dev/null
+++ b/src/Rules/Variables/NullCoalesceRule.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\IssetCheck;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\Type;
+
+/**
+ * @implements Rule<Node\Expr>
+ */
+final class NullCoalesceRule implements Rule
+{
+
+	public function __construct(private IssetCheck $issetCheck)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Node\Expr::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$typeMessageCallback = static function (Type $type): ?string {
+			$isNull = $type->isNull();
+			if ($isNull->maybe()) {
+				return null;
+			}
+
+			if ($isNull->yes()) {
+				return 'is always null';
+			}
+
+			return 'is not nullable';
+		};
+
+		if ($node instanceof Node\Expr\BinaryOp\Coalesce) {
+			$error = $this->issetCheck->check($node->left, $scope, 'on left side of ??', 'nullCoalesce', $typeMessageCallback);
+		} elseif ($node instanceof Node\Expr\AssignOp\Coalesce) {
+			$error = $this->issetCheck->check($node->var, $scope, 'on left side of ??=', 'nullCoalesce', $typeMessageCallback);
+		} else {
+			return [];
+		}
+
+		if ($error === null) {
+			return [];
+		}
+
+		return [$error];
+	}
+
+}
diff --git a/src/Rules/Variables/ParameterOutAssignedTypeRule.php b/src/Rules/Variables/ParameterOutAssignedTypeRule.php
new file mode 100644
index 00000000..52dcd8b8
--- /dev/null
+++ b/src/Rules/Variables/ParameterOutAssignedTypeRule.php
@@ -0,0 +1,121 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\VariableAssignNode;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<VariableAssignNode>
+ */
+final class ParameterOutAssignedTypeRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return VariableAssignNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$inFunction = $scope->getFunction();
+		if ($inFunction === null) {
+			return [];
+		}
+
+		if ($scope->isInAnonymousFunction()) {
+			return [];
+		}
+
+		$variable = $node->getVariable();
+		if (!is_string($variable->name)) {
+			return [];
+		}
+
+		$parameters = $inFunction->getParameters();
+		$foundParameter = null;
+		foreach ($parameters as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+			if ($parameter->getName() !== $variable->name) {
+				continue;
+			}
+
+			$foundParameter = $parameter;
+			break;
+		}
+
+		if ($foundParameter === null) {
+			return [];
+		}
+
+		$isParamOutType = true;
+		$outType = $foundParameter->getOutType();
+		if ($outType === null) {
+			$isParamOutType = false;
+			$outType = $foundParameter->getType();
+		}
+
+		$outType = TypeUtils::resolveLateResolvableTypes($outType);
+
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->getAssignedExpr(),
+			'',
+			static fn (Type $type): bool => $outType->isSuperTypeOf($type)->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$assignedExprType = $scope->getType($node->getAssignedExpr());
+		if ($outType->isSuperTypeOf($assignedExprType)->yes()) {
+			return [];
+		}
+
+		if ($inFunction instanceof ExtendedMethodReflection) {
+			$functionDescription = sprintf('method %s::%s()', $inFunction->getDeclaringClass()->getDisplayName(), $inFunction->getName());
+		} else {
+			$functionDescription = sprintf('function %s()', $inFunction->getName());
+		}
+
+		$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($outType, $assignedExprType);
+		$errorBuilder = RuleErrorBuilder::message(sprintf(
+			'Parameter &$%s %s of %s expects %s, %s given.',
+			$foundParameter->getName(),
+			$isParamOutType ? '@param-out type' : 'by-ref type',
+			$functionDescription,
+			$outType->describe($verbosityLevel),
+			$assignedExprType->describe($verbosityLevel),
+		))->identifier(sprintf('%s.type', $isParamOutType ? 'paramOut' : 'parameterByRef'));
+
+		if (!$isParamOutType) {
+			$errorBuilder->tip('You can change the parameter out type with @param-out PHPDoc tag.');
+		}
+
+		return [
+			$errorBuilder->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Variables/ParameterOutExecutionEndTypeRule.php b/src/Rules/Variables/ParameterOutExecutionEndTypeRule.php
new file mode 100644
index 00000000..e36ec162
--- /dev/null
+++ b/src/Rules/Variables/ParameterOutExecutionEndTypeRule.php
@@ -0,0 +1,133 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\ExecutionEndNode;
+use PHPStan\Node\Expr\ParameterVariableOriginalValueExpr;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedParameterReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @implements Rule<ExecutionEndNode>
+ */
+final class ParameterOutExecutionEndTypeRule implements Rule
+{
+
+	public function __construct(
+		private RuleLevelHelper $ruleLevelHelper,
+	)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return ExecutionEndNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$inFunction = $scope->getFunction();
+		if ($inFunction === null) {
+			return [];
+		}
+
+		if ($scope->isInAnonymousFunction()) {
+			return [];
+		}
+
+		$endNode = $node->getNode();
+		if ($endNode instanceof Node\Stmt\Expression) {
+			$endNodeExpr = $endNode->expr;
+			$endNodeExprType = $scope->getType($endNodeExpr);
+			if ($endNodeExprType instanceof NeverType && $endNodeExprType->isExplicit()) {
+				return [];
+			}
+		}
+
+		$parameters = $inFunction->getParameters();
+		$errors = [];
+		foreach ($parameters as $parameter) {
+			if (!$parameter->passedByReference()->createsNewVariable()) {
+				continue;
+			}
+
+			foreach ($this->processSingleParameter($scope, $inFunction, $parameter) as $error) {
+				$errors[] = $error;
+			}
+		}
+
+		return $errors;
+	}
+
+	/**
+	 * @return list<IdentifierRuleError>
+	 */
+	private function processSingleParameter(
+		Scope $scope,
+		FunctionReflection|ExtendedMethodReflection $inFunction,
+		ExtendedParameterReflection $parameter,
+	): array
+	{
+		$outType = $parameter->getOutType();
+		if ($outType === null) {
+			return [];
+		}
+
+		if ($scope->hasExpressionType(new ParameterVariableOriginalValueExpr($parameter->getName()))->no()) {
+			return [];
+		}
+
+		$outType = TypeUtils::resolveLateResolvableTypes($outType);
+
+		$variableExpr = new Node\Expr\Variable($parameter->getName());
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$variableExpr,
+			'',
+			static fn (Type $type): bool => $outType->isSuperTypeOf($type)->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+
+		$assignedExprType = $scope->getType($variableExpr);
+		if ($outType->isSuperTypeOf($assignedExprType)->yes()) {
+			return [];
+		}
+
+		if ($inFunction instanceof ExtendedMethodReflection) {
+			$functionDescription = sprintf('method %s::%s()', $inFunction->getDeclaringClass()->getDisplayName(), $inFunction->getName());
+		} else {
+			$functionDescription = sprintf('function %s()', $inFunction->getName());
+		}
+
+		$verbosityLevel = VerbosityLevel::getRecommendedLevelByType($outType, $assignedExprType);
+		$errorBuilder = RuleErrorBuilder::message(sprintf(
+			'Parameter &$%s @param-out type of %s expects %s, %s given.',
+			$parameter->getName(),
+			$functionDescription,
+			$outType->describe($verbosityLevel),
+			$assignedExprType->describe($verbosityLevel),
+		))->identifier(sprintf('paramOut.type'));
+
+		return [
+			$errorBuilder->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Variables/UnsetRule.php b/src/Rules/Variables/UnsetRule.php
new file mode 100644
index 00000000..87ab3405
--- /dev/null
+++ b/src/Rules/Variables/UnsetRule.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\IdentifierRuleError;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Stmt\Unset_>
+ */
+final class UnsetRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return Node\Stmt\Unset_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$functionArguments = $node->vars;
+		$errors = [];
+
+		foreach ($functionArguments as $argument) {
+			$error = $this->canBeUnset($argument, $scope);
+			if ($error === null) {
+				continue;
+			}
+
+			$errors[] = $error;
+		}
+
+		return $errors;
+	}
+
+	private function canBeUnset(Node $node, Scope $scope): ?IdentifierRuleError
+	{
+		if ($node instanceof Node\Expr\Variable && is_string($node->name)) {
+			$hasVariable = $scope->hasVariableType($node->name);
+			if ($hasVariable->no()) {
+				return RuleErrorBuilder::message(
+					sprintf('Call to function unset() contains undefined variable $%s.', $node->name),
+				)
+					->line($node->getStartLine())
+					->identifier('unset.variable')
+					->build();
+			}
+		} elseif ($node instanceof Node\Expr\ArrayDimFetch && $node->dim !== null) {
+			$type = $scope->getType($node->var);
+			$dimType = $scope->getType($node->dim);
+
+			if ($type->isOffsetAccessible()->no() || $type->hasOffsetValueType($dimType)->no()) {
+				return RuleErrorBuilder::message(
+					sprintf(
+						'Cannot unset offset %s on %s.',
+						$dimType->describe(VerbosityLevel::value()),
+						$type->describe(VerbosityLevel::value()),
+					),
+				)
+					->line($node->getStartLine())
+					->identifier('unset.offset')
+					->build();
+			}
+
+			return $this->canBeUnset($node->var, $scope);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Rules/Variables/VariableCloningRule.php b/src/Rules/Variables/VariableCloningRule.php
new file mode 100644
index 00000000..374c5713
--- /dev/null
+++ b/src/Rules/Variables/VariableCloningRule.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Rules\Variables;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Clone_;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use PHPStan\Rules\RuleLevelHelper;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function is_string;
+use function sprintf;
+
+/**
+ * @implements Rule<Node\Expr\Clone_>
+ */
+final class VariableCloningRule implements Rule
+{
+
+	public function __construct(private RuleLevelHelper $ruleLevelHelper)
+	{
+	}
+
+	public function getNodeType(): string
+	{
+		return Clone_::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$typeResult = $this->ruleLevelHelper->findTypeToCheck(
+			$scope,
+			$node->expr,
+			'Cloning object of an unknown class %s.',
+			static fn (Type $type): bool => $type->isCloneable()->yes(),
+		);
+		$type = $typeResult->getType();
+		if ($type instanceof ErrorType) {
+			return $typeResult->getUnknownClassErrors();
+		}
+		if ($type->isCloneable()->yes()) {
+			return [];
+		}
+
+		if ($node->expr instanceof Variable && is_string($node->expr->name)) {
+			return [
+				RuleErrorBuilder::message(sprintf(
+					'Cannot clone non-object variable $%s of type %s.',
+					$node->expr->name,
+					$type->describe(VerbosityLevel::typeOnly()),
+				))->identifier('clone.nonObject')->build(),
+			];
+		}
+
+		return [
+			RuleErrorBuilder::message(sprintf(
+				'Cannot clone %s.',
+				$type->describe(VerbosityLevel::typeOnly()),
+			))->identifier('clone.nonObject')->build(),
+		];
+	}
+
+}
diff --git a/src/Rules/Whitespace/FileWhitespaceRule.php b/src/Rules/Whitespace/FileWhitespaceRule.php
new file mode 100644
index 00000000..29d32f3a
--- /dev/null
+++ b/src/Rules/Whitespace/FileWhitespaceRule.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Rules\Whitespace;
+return;
+
+use Nette\Utils\Strings;
+use PhpParser\Node;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor;
+use PhpParser\NodeVisitorAbstract;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\FileNode;
+use PHPStan\Rules\Rule;
+use PHPStan\Rules\RuleErrorBuilder;
+use function count;
+
+/**
+ * @implements Rule<FileNode>
+ */
+final class FileWhitespaceRule implements Rule
+{
+
+	public function getNodeType(): string
+	{
+		return FileNode::class;
+	}
+
+	public function processNode(Node $node, Scope $scope): array
+	{
+		$nodes = $node->getNodes();
+		if (count($nodes) === 0) {
+			return [];
+		}
+
+		$firstNode = $nodes[0];
+		$messages = [];
+		if ($firstNode instanceof Node\Stmt\InlineHTML && $firstNode->value === "\xef\xbb\xbf") {
+			$messages[] = RuleErrorBuilder::message('File begins with UTF-8 BOM character. This may cause problems when running the code in the web browser.')
+				->identifier('whitespace.bom')
+				->build();
+		}
+
+		$nodeTraverser = new NodeTraverser();
+		$visitor = new class () extends NodeVisitorAbstract {
+
+			/** @var Node[] */
+			private array $lastNodes = [];
+
+			/**
+			 * @return int|null
+			 */
+			public function enterNode(Node $node)
+			{
+				if ($node instanceof Node\Stmt\Declare_) {
+					if ($node->stmts !== null && count($node->stmts) > 0) {
+						$this->lastNodes[] = $node->stmts[count($node->stmts) - 1];
+					}
+					return null;
+				}
+				if ($node instanceof Node\Stmt\Namespace_) {
+					if (count($node->stmts) > 0) {
+						$this->lastNodes[] = $node->stmts[count($node->stmts) - 1];
+					}
+					return null;
+				}
+				return NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN;
+			}
+
+			/**
+			 * @return Node[]
+			 */
+			public function getLastNodes(): array
+			{
+				return $this->lastNodes;
+			}
+
+		};
+		$nodeTraverser->addVisitor($visitor);
+		$nodeTraverser->traverse($nodes);
+
+		$lastNodes = $visitor->getLastNodes();
+		$lastNodes[] = $nodes[count($nodes) - 1];
+		foreach ($lastNodes as $lastNode) {
+			if (!$lastNode instanceof Node\Stmt\InlineHTML || Strings::match($lastNode->value, '#^(\s+)$#') === null) {
+				continue;
+			}
+
+			$messages[] = RuleErrorBuilder::message('File ends with a trailing whitespace. This may cause problems when running the code in the web browser. Remove the closing ?> mark or remove the whitespace.')->line($lastNode->getStartLine())
+				->identifier('whitespace.fileEnd')
+				->build();
+		}
+
+		return $messages;
+	}
+
+}
diff --git a/src/ShouldNotHappenException.php b/src/ShouldNotHappenException.php
new file mode 100644
index 00000000..0db43a84
--- /dev/null
+++ b/src/ShouldNotHappenException.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+use Exception;
+
+final class ShouldNotHappenException extends Exception
+{
+
+	/** @api */
+	public function __construct(string $message = 'Internal error.')
+	{
+		parent::__construct($message);
+	}
+
+}
diff --git a/src/Testing/ErrorFormatterTestCase.php b/src/Testing/ErrorFormatterTestCase.php
new file mode 100644
index 00000000..197e4d1f
--- /dev/null
+++ b/src/Testing/ErrorFormatterTestCase.php
@@ -0,0 +1,140 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use PHPStan\Analyser\Error;
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\ErrorsConsoleStyle;
+use PHPStan\Command\Output;
+use PHPStan\Command\Symfony\SymfonyOutput;
+use PHPStan\Command\Symfony\SymfonyStyle;
+use PHPStan\ShouldNotHappenException;
+use Symfony\Component\Console\Input\StringInput;
+use Symfony\Component\Console\Output\StreamOutput;
+use function array_map;
+use function array_slice;
+use function explode;
+use function fopen;
+use function implode;
+use function in_array;
+use function is_int;
+use function range;
+use function rewind;
+use function rtrim;
+use function stream_get_contents;
+
+abstract class ErrorFormatterTestCase extends PHPStanTestCase
+{
+
+	protected const DIRECTORY_PATH = '/data/folder/with space/and unicode 😃/project';
+
+	private const KIND_DECORATED = 'decorated';
+	private const KIND_PLAIN = 'plain';
+	private const KIND_VERBOSE = '+verbose';
+	private const KIND_NOT_VERBOSE = '+not-verbose';
+
+	/** @var array<string, StreamOutput> */
+	private array $outputStream = [];
+
+	/** @var array<string, Output> */
+	private array $output = [];
+
+	private function getOutputStream(bool $decorated = false, bool $verbose = false): StreamOutput
+	{
+		$kind = $decorated ? self::KIND_DECORATED : self::KIND_PLAIN;
+		$kind .= $verbose ? self::KIND_VERBOSE : self::KIND_NOT_VERBOSE;
+
+		if (!isset($this->outputStream[$kind])) {
+			$resource = fopen('php://memory', 'w', false);
+			if ($resource === false) {
+				throw new ShouldNotHappenException();
+			}
+			$verbosity = $verbose ? StreamOutput::VERBOSITY_VERBOSE : StreamOutput::VERBOSITY_NORMAL;
+			$this->outputStream[$kind] = new StreamOutput($resource, $verbosity, $decorated);
+		}
+
+		return $this->outputStream[$kind];
+	}
+
+	protected function getOutput(bool $decorated = false, bool $verbose = false): Output
+	{
+		$kind = $decorated ? self::KIND_DECORATED : self::KIND_PLAIN;
+		$kind .= $verbose ? self::KIND_VERBOSE : self::KIND_NOT_VERBOSE;
+
+		if (!isset($this->output[$kind])) {
+			$outputStream = $this->getOutputStream($decorated, $verbose);
+			$errorConsoleStyle = new ErrorsConsoleStyle(new StringInput(''), $outputStream);
+			$this->output[$kind] = new SymfonyOutput($outputStream, new SymfonyStyle($errorConsoleStyle));
+		}
+
+		return $this->output[$kind];
+	}
+
+	protected function getOutputContent(bool $decorated = false, bool $verbose = false): string
+	{
+		rewind($this->getOutputStream($decorated, $verbose)->getStream());
+
+		$contents = stream_get_contents($this->getOutputStream($decorated, $verbose)->getStream());
+		if ($contents === false) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $this->rtrimMultiline($contents);
+	}
+
+	/**
+	 * @param array{int, int}|int $numFileErrors
+	 */
+	protected function getAnalysisResult(array|int $numFileErrors, int $numGenericErrors): AnalysisResult
+	{
+		if (is_int($numFileErrors)) {
+			$offsetFileErrors = 0;
+		} else {
+			[$offsetFileErrors, $numFileErrors] = $numFileErrors;
+		}
+
+		if (!in_array($numFileErrors, range(0, 6), true) ||
+			!in_array($offsetFileErrors, range(0, 6), true) ||
+			!in_array($numGenericErrors, range(0, 2), true)
+		) {
+			throw new ShouldNotHappenException();
+		}
+
+		$fileErrors = array_slice([
+			new Error('Foo', self::DIRECTORY_PATH . '/folder with unicode 😃/file name with "spaces" and unicode 😃.php', 4),
+			new Error('Foo<Bar>', self::DIRECTORY_PATH . '/foo.php', 1),
+			new Error("Bar\nBar2", self::DIRECTORY_PATH . '/foo.php', 5, true, null, null, 'a tip'),
+			new Error("Bar\nBar2", self::DIRECTORY_PATH . '/folder with unicode 😃/file name with "spaces" and unicode 😃.php', 2),
+			new Error("Bar\nBar2", self::DIRECTORY_PATH . '/foo.php', null),
+			new Error('Foobar\\Buz', self::DIRECTORY_PATH . '/foo.php', 5, true, null, null, 'a tip', null, null, 'foobar.buz'),
+		], $offsetFileErrors, $numFileErrors);
+
+		$genericErrors = array_slice([
+			'first generic error',
+			'second generic<error>',
+		], 0, $numGenericErrors);
+
+		return new AnalysisResult(
+			$fileErrors,
+			$genericErrors,
+			[],
+			[],
+			[],
+			false,
+			null,
+			true,
+			0,
+			false,
+			[],
+		);
+	}
+
+	private function rtrimMultiline(string $output): string
+	{
+		$result = array_map(static fn (string $line): string => rtrim($line, " \r\n"), explode("\n", $output));
+
+		return implode("\n", $result);
+	}
+
+}
diff --git a/src/Testing/LevelsTestCase.php b/src/Testing/LevelsTestCase.php
new file mode 100644
index 00000000..ffde9dca
--- /dev/null
+++ b/src/Testing/LevelsTestCase.php
@@ -0,0 +1,210 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+use PHPStan\File\FileHelper;
+use PHPStan\File\FileWriter;
+use PHPStan\ShouldNotHappenException;
+use PHPUnit\Framework\AssertionFailedError;
+use PHPUnit\Framework\TestCase;
+use function array_merge;
+use function count;
+use function escapeshellarg;
+use function escapeshellcmd;
+use function exec;
+use function implode;
+use function method_exists;
+use function putenv;
+use function range;
+use function sprintf;
+use function unlink;
+use const DIRECTORY_SEPARATOR;
+use const PHP_BINARY;
+
+/** @api */
+abstract class LevelsTestCase extends TestCase
+{
+
+	/**
+	 * @return array<array<string>>
+	 */
+	abstract public static function dataTopics(): array;
+
+	abstract public function getDataPath(): string;
+
+	abstract public function getPhpStanExecutablePath(): string;
+
+	abstract public function getPhpStanConfigPath(): ?string;
+
+	protected function getResultSuffix(): string
+	{
+		return '';
+	}
+
+	protected function shouldAutoloadAnalysedFile(): bool
+	{
+		return true;
+	}
+
+	/**
+	 * @dataProvider dataTopics
+	 */
+	public function testLevels(
+		string $topic,
+	): void
+	{
+		$file = sprintf('%s' . DIRECTORY_SEPARATOR . '%s.php', $this->getDataPath(), $topic);
+		$command = escapeshellcmd($this->getPhpStanExecutablePath());
+		$configPath = $this->getPhpStanConfigPath();
+		$fileHelper = new FileHelper(__DIR__ . '/../..');
+
+		$previousMessages = [];
+
+		$exceptions = [];
+
+		exec(sprintf('%s %s clear-result-cache %s 2>&1', escapeshellarg(PHP_BINARY), $command, $configPath !== null ? '--configuration ' . escapeshellarg($configPath) : ''), $clearResultCacheOutputLines, $clearResultCacheExitCode);
+		if ($clearResultCacheExitCode !== 0) {
+			throw new ShouldNotHappenException('Could not clear result cache: ' . implode("\n", $clearResultCacheOutputLines));
+		}
+
+		putenv('__PHPSTAN_FORCE_VALIDATE_STUB_FILES=1');
+
+		foreach (range(0, 10) as $level) {
+			unset($outputLines);
+			exec(sprintf('%s %s analyse --no-progress --error-format=prettyJson --level=%d %s %s %s', escapeshellarg(PHP_BINARY), $command, $level, $configPath !== null ? '--configuration ' . escapeshellarg($configPath) : '', $this->shouldAutoloadAnalysedFile() ? sprintf('--autoload-file %s', escapeshellarg($file)) : '', escapeshellarg($file)), $outputLines);
+
+			$output = implode("\n", $outputLines);
+
+			try {
+				$actualJson = Json::decode($output, Json::FORCE_ARRAY);
+			} catch (JsonException) {
+				throw new JsonException(sprintf('Cannot decode: %s', $output));
+			}
+			if (count($actualJson['files']) > 0) {
+				$normalizedFilePath = $fileHelper->normalizePath($file);
+				if (!isset($actualJson['files'][$normalizedFilePath])) {
+					$messagesBeforeDiffing = [];
+				} else {
+					$messagesBeforeDiffing = $actualJson['files'][$normalizedFilePath]['messages'];
+				}
+
+				foreach ($this->getAdditionalAnalysedFiles() as $additionalAnalysedFile) {
+					$normalizedAdditionalFilePath = $fileHelper->normalizePath($additionalAnalysedFile);
+					if (!isset($actualJson['files'][$normalizedAdditionalFilePath])) {
+						continue;
+					}
+
+					$messagesBeforeDiffing = array_merge($messagesBeforeDiffing, $actualJson['files'][$normalizedAdditionalFilePath]['messages']);
+				}
+			} else {
+				$messagesBeforeDiffing = [];
+			}
+
+			$messages = [];
+			foreach ($messagesBeforeDiffing as $message) {
+				foreach ($previousMessages as $lastMessage) {
+					if (
+						$message['message'] === $lastMessage['message']
+						&& $message['line'] === $lastMessage['line']
+					) {
+						continue 2;
+					}
+				}
+
+				unset($message['tip']);
+				unset($message['identifier']);
+
+				$messages[] = $message;
+			}
+
+			$missingMessages = [];
+			foreach ($previousMessages as $previousMessage) {
+				foreach ($messagesBeforeDiffing as $message) {
+					if (
+						$previousMessage['message'] === $message['message']
+						&& $previousMessage['line'] === $message['line']
+					) {
+						continue 2;
+					}
+				}
+
+				unset($previousMessage['tip']);
+
+				$missingMessages[] = $previousMessage;
+			}
+
+			$previousMessages = array_merge($previousMessages, $messages);
+			$expectedJsonFile = sprintf('%s/%s-%d%s.json', $this->getDataPath(), $topic, $level, $this->getResultSuffix());
+
+			$exception = $this->compareFiles($expectedJsonFile, $messages);
+			if ($exception !== null) {
+				$exceptions[] = $exception;
+			}
+
+			$expectedJsonMissingFile = sprintf('%s/%s-%d-missing%s.json', $this->getDataPath(), $topic, $level, $this->getResultSuffix());
+			$exception = $this->compareFiles($expectedJsonMissingFile, $missingMessages);
+			if ($exception === null) {
+				continue;
+			}
+
+			$exceptions[] = $exception;
+		}
+
+		if (count($exceptions) > 0) {
+			throw $exceptions[0];
+		}
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getAdditionalAnalysedFiles(): array
+	{
+		return [];
+	}
+
+	/**
+	 * @param string[] $expectedMessages
+	 */
+	private function compareFiles(string $expectedJsonFile, array $expectedMessages): ?AssertionFailedError
+	{
+		if (count($expectedMessages) === 0) {
+			try {
+				self::ourCustomAssertFileDoesNotExist($expectedJsonFile);
+				return null;
+			} catch (AssertionFailedError $e) {
+				unlink($expectedJsonFile);
+				return $e;
+			}
+		}
+
+		$actualOutput = Json::encode($expectedMessages, Json::PRETTY);
+
+		try {
+			$this->assertJsonStringEqualsJsonFile(
+				$expectedJsonFile,
+				$actualOutput,
+			);
+		} catch (AssertionFailedError $e) {
+			FileWriter::write($expectedJsonFile, $actualOutput);
+			return $e;
+		}
+
+		return null;
+	}
+
+	public static function ourCustomAssertFileDoesNotExist(string $filename, string $message = ''): void
+	{
+		// this method is no longer called assertFileDoesNotExist because this method is final in PHPUnit 10
+		if (!method_exists(parent::class, 'assertFileDoesNotExist')) {
+			parent::assertFileNotExists($filename, $message);
+			return;
+		}
+
+		parent::assertFileDoesNotExist($filename, $message);
+	}
+
+}
diff --git a/src/Testing/PHPStanTestCase.php b/src/Testing/PHPStanTestCase.php
new file mode 100644
index 00000000..05da3639
--- /dev/null
+++ b/src/Testing/PHPStanTestCase.php
@@ -0,0 +1,251 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use PHPStan\Analyser\ConstantResolver;
+use PHPStan\Analyser\DirectInternalScopeFactory;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Analyser\RicherScopeGetTypeHelper;
+use PHPStan\Analyser\ScopeFactory;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\DependencyInjection\Container;
+use PHPStan\DependencyInjection\ContainerFactory;
+use PHPStan\DependencyInjection\Reflection\ClassReflectionExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\DynamicReturnTypeExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\ExpressionTypeResolverExtensionRegistryProvider;
+use PHPStan\DependencyInjection\Type\OperatorTypeSpecifyingExtensionRegistryProvider;
+use PHPStan\File\FileHelper;
+use PHPStan\Internal\DirectoryCreator;
+use PHPStan\Internal\DirectoryCreatorException;
+use PHPStan\Node\Printer\ExprPrinter;
+use PHPStan\Parser\Parser;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\TypeNodeResolver;
+use PHPStan\PhpDoc\TypeStringResolver;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Reflection\ReflectionProvider\DirectReflectionProviderProvider;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\Type\Constant\OversizedArrayBuilder;
+use PHPStan\Type\TypeAliasResolver;
+use PHPStan\Type\UsefulTypeAliasResolver;
+use PHPUnit\Framework\ExpectationFailedException;
+use PHPUnit\Framework\TestCase;
+use function array_merge;
+use function count;
+use function implode;
+use function rtrim;
+use function sha1;
+use function sprintf;
+use function sys_get_temp_dir;
+use const DIRECTORY_SEPARATOR;
+use const PHP_VERSION_ID;
+
+/** @api */
+abstract class PHPStanTestCase extends TestCase
+{
+
+	/** @var array<string, Container> */
+	private static array $containers = [];
+
+	/** @api */
+	public static function getContainer(): Container
+	{
+		$additionalConfigFiles = static::getAdditionalConfigFiles();
+		$additionalConfigFiles[] = __DIR__ . '/TestCase.neon';
+		$cacheKey = sha1(implode("\n", $additionalConfigFiles));
+
+		if (!isset(self::$containers[$cacheKey])) {
+			$tmpDir = sys_get_temp_dir() . '/phpstan-tests';
+			try {
+				DirectoryCreator::ensureDirectoryExists($tmpDir, 0777);
+			} catch (DirectoryCreatorException $e) {
+				self::fail($e->getMessage());
+			}
+
+			$rootDir = __DIR__ . '/../..';
+			$fileHelper = new FileHelper($rootDir);
+			$rootDir = $fileHelper->normalizePath($rootDir, '/');
+			$containerFactory = new ContainerFactory($rootDir);
+			$container = $containerFactory->create($tmpDir, array_merge([
+				$containerFactory->getConfigDirectory() . '/config.level8.neon',
+			], $additionalConfigFiles), []);
+			self::$containers[$cacheKey] = $container;
+
+			foreach ($container->getParameter('bootstrapFiles') as $bootstrapFile) {
+				(static function (string $file) use ($container): void {
+					require_once $file;
+				})($bootstrapFile);
+			}
+
+			if (PHP_VERSION_ID >= 80000) {
+				require_once __DIR__ . '/../../stubs/runtime/Enum/UnitEnum.php';
+				require_once __DIR__ . '/../../stubs/runtime/Enum/BackedEnum.php';
+				require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnum.php';
+				require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnumUnitCase.php';
+				require_once __DIR__ . '/../../stubs/runtime/Enum/ReflectionEnumBackedCase.php';
+			}
+		} else {
+			ContainerFactory::postInitializeContainer(self::$containers[$cacheKey]);
+		}
+
+		return self::$containers[$cacheKey];
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public static function getAdditionalConfigFiles(): array
+	{
+		return [];
+	}
+
+	public static function getParser(): Parser
+	{
+		/** @var Parser $parser */
+		$parser = self::getContainer()->getService('defaultAnalysisParser');
+		return $parser;
+	}
+
+	/** @api */
+	public static function createReflectionProvider(): ReflectionProvider
+	{
+		return self::getContainer()->getByType(ReflectionProvider::class);
+	}
+
+	public static function getReflector(): Reflector
+	{
+		return self::getContainer()->getService('betterReflectionReflector');
+	}
+
+	public static function getClassReflectionExtensionRegistryProvider(): ClassReflectionExtensionRegistryProvider
+	{
+		return self::getContainer()->getByType(ClassReflectionExtensionRegistryProvider::class);
+	}
+
+	/**
+	 * @param string[] $dynamicConstantNames
+	 */
+	public static function createScopeFactory(ReflectionProvider $reflectionProvider, TypeSpecifier $typeSpecifier, array $dynamicConstantNames = []): ScopeFactory
+	{
+		$container = self::getContainer();
+
+		if (count($dynamicConstantNames) === 0) {
+			$dynamicConstantNames = $container->getParameter('dynamicConstantNames');
+		}
+
+		$reflectionProviderProvider = new DirectReflectionProviderProvider($reflectionProvider);
+		$composerPhpVersionFactory = $container->getByType(ComposerPhpVersionFactory::class);
+		$constantResolver = new ConstantResolver($reflectionProviderProvider, $dynamicConstantNames, null, $composerPhpVersionFactory);
+
+		$initializerExprTypeResolver = new InitializerExprTypeResolver(
+			$constantResolver,
+			$reflectionProviderProvider,
+			$container->getByType(PhpVersion::class),
+			$container->getByType(OperatorTypeSpecifyingExtensionRegistryProvider::class),
+			new OversizedArrayBuilder(),
+			$container->getParameter('usePathConstantsAsConstantString'),
+		);
+
+		return new ScopeFactory(
+			new DirectInternalScopeFactory(
+				$reflectionProvider,
+				$initializerExprTypeResolver,
+				$container->getByType(DynamicReturnTypeExtensionRegistryProvider::class),
+				$container->getByType(ExpressionTypeResolverExtensionRegistryProvider::class),
+				$container->getByType(ExprPrinter::class),
+				$typeSpecifier,
+				new PropertyReflectionFinder(),
+				self::getParser(),
+				$container->getByType(NodeScopeResolver::class),
+				new RicherScopeGetTypeHelper($initializerExprTypeResolver),
+				$container->getByType(PhpVersion::class),
+				$container->getByType(AttributeReflectionFactory::class),
+				$container->getParameter('phpVersion'),
+				$constantResolver,
+			),
+		);
+	}
+
+	/**
+	 * @param array<string, string> $globalTypeAliases
+	 */
+	public static function createTypeAliasResolver(array $globalTypeAliases, ReflectionProvider $reflectionProvider): TypeAliasResolver
+	{
+		$container = self::getContainer();
+
+		return new UsefulTypeAliasResolver(
+			$globalTypeAliases,
+			$container->getByType(TypeStringResolver::class),
+			$container->getByType(TypeNodeResolver::class),
+			$reflectionProvider,
+		);
+	}
+
+	protected function shouldTreatPhpDocTypesAsCertain(): bool
+	{
+		return true;
+	}
+
+	public static function getFileHelper(): FileHelper
+	{
+		return self::getContainer()->getByType(FileHelper::class);
+	}
+
+	/**
+	 * Provides a DIRECTORY_SEPARATOR agnostic assertion helper, to compare file paths.
+	 *
+	 */
+	protected function assertSamePaths(string $expected, string $actual, string $message = ''): void
+	{
+		$expected = $this->getFileHelper()->normalizePath($expected);
+		$actual = $this->getFileHelper()->normalizePath($actual);
+
+		$this->assertSame($expected, $actual, $message);
+	}
+
+	/**
+	 * @param Error[]|string[] $errors
+	 */
+	protected function assertNoErrors(array $errors): void
+	{
+		try {
+			$this->assertCount(0, $errors);
+		} catch (ExpectationFailedException $e) {
+			$messages = [];
+			foreach ($errors as $error) {
+				if ($error instanceof Error) {
+					$messages[] = sprintf("- %s\n  in %s on line %d\n", rtrim($error->getMessage(), '.'), $error->getFile(), $error->getLine());
+				} else {
+					$messages[] = $error;
+				}
+			}
+
+			$this->fail($e->getMessage() . "\n\nEmitted errors:\n" . implode("\n", $messages));
+		}
+	}
+
+	protected function skipIfNotOnWindows(): void
+	{
+		if (DIRECTORY_SEPARATOR === '\\') {
+			return;
+		}
+
+		self::markTestSkipped();
+	}
+
+	protected function skipIfNotOnUnix(): void
+	{
+		if (DIRECTORY_SEPARATOR === '/') {
+			return;
+		}
+
+		self::markTestSkipped();
+	}
+
+}
diff --git a/src/Testing/RuleTestCase.php b/src/Testing/RuleTestCase.php
new file mode 100644
index 00000000..2dcbaed1
--- /dev/null
+++ b/src/Testing/RuleTestCase.php
@@ -0,0 +1,227 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Analyser;
+use PHPStan\Analyser\AnalyserResultFinalizer;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\FileAnalyser;
+use PHPStan\Analyser\InternalError;
+use PHPStan\Analyser\LocalIgnoresProcessor;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Analyser\RuleErrorTransformer;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Collectors\Collector;
+use PHPStan\Collectors\Registry as CollectorRegistry;
+use PHPStan\Dependency\DependencyResolver;
+use PHPStan\DependencyInjection\Type\DynamicThrowTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterClosureTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterOutTypeExtensionProvider;
+use PHPStan\File\FileHelper;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\Rules\DirectRegistry as DirectRuleRegistry;
+use PHPStan\Rules\Properties\DirectReadWritePropertiesExtensionProvider;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtension;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\Rules\Rule;
+use PHPStan\Type\FileTypeMapper;
+use function array_map;
+use function count;
+use function implode;
+use function sprintf;
+
+/**
+ * @api
+ * @template TRule of Rule
+ */
+abstract class RuleTestCase extends PHPStanTestCase
+{
+
+	private ?Analyser $analyser = null;
+
+	/**
+	 * @return TRule
+	 */
+	abstract protected function getRule(): Rule;
+
+	/**
+	 * @return array<Collector<Node, mixed>>
+	 */
+	protected function getCollectors(): array
+	{
+		return [];
+	}
+
+	/**
+	 * @return ReadWritePropertiesExtension[]
+	 */
+	protected function getReadWritePropertiesExtensions(): array
+	{
+		return [];
+	}
+
+	protected function getTypeSpecifier(): TypeSpecifier
+	{
+		return self::getContainer()->getService('typeSpecifier');
+	}
+
+	private function getAnalyser(DirectRuleRegistry $ruleRegistry): Analyser
+	{
+		if ($this->analyser === null) {
+			$collectorRegistry = new CollectorRegistry($this->getCollectors());
+
+			$reflectionProvider = $this->createReflectionProvider();
+			$typeSpecifier = $this->getTypeSpecifier();
+
+			$readWritePropertiesExtensions = $this->getReadWritePropertiesExtensions();
+			$nodeScopeResolver = new NodeScopeResolver(
+				$reflectionProvider,
+				self::getContainer()->getByType(InitializerExprTypeResolver::class),
+				self::getReflector(),
+				self::getClassReflectionExtensionRegistryProvider(),
+				self::getContainer()->getByType(ParameterOutTypeExtensionProvider::class),
+				$this->getParser(),
+				self::getContainer()->getByType(FileTypeMapper::class),
+				self::getContainer()->getByType(StubPhpDocProvider::class),
+				self::getContainer()->getByType(PhpVersion::class),
+				self::getContainer()->getByType(SignatureMapProvider::class),
+				self::getContainer()->getByType(AttributeReflectionFactory::class),
+				self::getContainer()->getByType(PhpDocInheritanceResolver::class),
+				self::getContainer()->getByType(FileHelper::class),
+				$typeSpecifier,
+				self::getContainer()->getByType(DynamicThrowTypeExtensionProvider::class),
+				$readWritePropertiesExtensions !== [] ? new DirectReadWritePropertiesExtensionProvider($readWritePropertiesExtensions) : self::getContainer()->getByType(ReadWritePropertiesExtensionProvider::class),
+				self::getContainer()->getByType(ParameterClosureTypeExtensionProvider::class),
+				self::createScopeFactory($reflectionProvider, $typeSpecifier),
+				$this->shouldPolluteScopeWithLoopInitialAssignments(),
+				$this->shouldPolluteScopeWithAlwaysIterableForeach(),
+				self::getContainer()->getParameter('polluteScopeWithBlock'),
+				[],
+				[],
+				self::getContainer()->getParameter('universalObjectCratesClasses'),
+				self::getContainer()->getParameter('exceptions')['implicitThrows'],
+				$this->shouldTreatPhpDocTypesAsCertain(),
+			);
+			$fileAnalyser = new FileAnalyser(
+				$this->createScopeFactory($reflectionProvider, $typeSpecifier),
+				$nodeScopeResolver,
+				$this->getParser(),
+				self::getContainer()->getByType(DependencyResolver::class),
+				new RuleErrorTransformer(),
+				new LocalIgnoresProcessor(),
+			);
+			$this->analyser = new Analyser(
+				$fileAnalyser,
+				$ruleRegistry,
+				$collectorRegistry,
+				$nodeScopeResolver,
+				50,
+			);
+		}
+
+		return $this->analyser;
+	}
+
+	/**
+	 * @param string[] $files
+	 * @param list<array{0: string, 1: int, 2?: string|null}> $expectedErrors
+	 */
+	public function analyse(array $files, array $expectedErrors): void
+	{
+		$actualErrors = $this->gatherAnalyserErrors($files);
+		$strictlyTypedSprintf = static function (int $line, string $message, ?string $tip): string {
+			$message = sprintf('%02d: %s', $line, $message);
+			if ($tip !== null) {
+				$message .= "\n    💡 " . $tip;
+			}
+
+			return $message;
+		};
+
+		$expectedErrors = array_map(
+			static fn (array $error): string => $strictlyTypedSprintf($error[1], $error[0], $error[2] ?? null),
+			$expectedErrors,
+		);
+
+		$actualErrors = array_map(
+			static function (Error $error) use ($strictlyTypedSprintf): string {
+				$line = $error->getLine();
+				if ($line === null) {
+					return $strictlyTypedSprintf(-1, $error->getMessage(), $error->getTip());
+				}
+				return $strictlyTypedSprintf($line, $error->getMessage(), $error->getTip());
+			},
+			$actualErrors,
+		);
+
+		$this->assertSame(implode("\n", $expectedErrors) . "\n", implode("\n", $actualErrors) . "\n");
+	}
+
+	/**
+	 * @param string[] $files
+	 * @return list<Error>
+	 */
+	public function gatherAnalyserErrors(array $files): array
+	{
+		$ruleRegistry = new DirectRuleRegistry([
+			$this->getRule(),
+		]);
+		$files = array_map([$this->getFileHelper(), 'normalizePath'], $files);
+		$analyserResult = $this->getAnalyser($ruleRegistry)->analyse(
+			$files,
+			null,
+			null,
+			true,
+		);
+		if (count($analyserResult->getInternalErrors()) > 0) {
+			$this->fail(implode("\n", array_map(static fn (InternalError $internalError) => $internalError->getMessage(), $analyserResult->getInternalErrors())));
+		}
+
+		if ($this->shouldFailOnPhpErrors() && count($analyserResult->getAllPhpErrors()) > 0) {
+			$this->fail(implode("\n", array_map(
+				static fn (Error $error): string => sprintf('%s on %s:%d', $error->getMessage(), $error->getFile(), $error->getLine()),
+				$analyserResult->getAllPhpErrors(),
+			)));
+		}
+
+		$finalizer = new AnalyserResultFinalizer(
+			$ruleRegistry,
+			new RuleErrorTransformer(),
+			$this->createScopeFactory($this->createReflectionProvider(), $this->getTypeSpecifier()),
+			new LocalIgnoresProcessor(),
+			true,
+		);
+
+		return $finalizer->finalize($analyserResult, false, true)->getAnalyserResult()->getUnorderedErrors();
+	}
+
+	protected function shouldPolluteScopeWithLoopInitialAssignments(): bool
+	{
+		return false;
+	}
+
+	protected function shouldPolluteScopeWithAlwaysIterableForeach(): bool
+	{
+		return true;
+	}
+
+	protected function shouldFailOnPhpErrors(): bool
+	{
+		return true;
+	}
+
+	public static function getAdditionalConfigFiles(): array
+	{
+		return [
+			__DIR__ . '/../../conf/bleedingEdge.neon',
+		];
+	}
+
+}
diff --git a/src/Testing/TestCaseSourceLocatorFactory.php b/src/Testing/TestCaseSourceLocatorFactory.php
new file mode 100644
index 00000000..225139b3
--- /dev/null
+++ b/src/Testing/TestCaseSourceLocatorFactory.php
@@ -0,0 +1,92 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use Composer\Autoload\ClassLoader;
+use PhpParser\Parser;
+use PHPStan\BetterReflection\SourceLocator\Ast\Locator;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\PhpStormStubsSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\ReflectionSourceStubber;
+use PHPStan\BetterReflection\SourceLocator\Type\AggregateSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\EvaledCodeSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\MemoizingSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\PhpInternalSourceLocator;
+use PHPStan\BetterReflection\SourceLocator\Type\SourceLocator;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\BetterReflection\SourceLocator\AutoloadSourceLocator;
+use PHPStan\Reflection\BetterReflection\SourceLocator\ComposerJsonAndInstalledJsonSourceLocatorMaker;
+use PHPStan\Reflection\BetterReflection\SourceLocator\FileNodesFetcher;
+use PHPStan\Reflection\BetterReflection\SourceLocator\PhpVersionBlacklistSourceLocator;
+use ReflectionClass;
+use function dirname;
+use function is_file;
+use function serialize;
+use function sha1;
+
+final class TestCaseSourceLocatorFactory
+{
+
+	/** @var array<string, list<SourceLocator>> */
+	private static array $composerSourceLocatorsCache = [];
+
+	/**
+	 * @param string[] $fileExtensions
+	 * @param array{analyse?: array<int, string>, analyseAndScan?: array<int, string>}|null $excludePaths
+	 */
+	public function __construct(
+		private ComposerJsonAndInstalledJsonSourceLocatorMaker $composerJsonAndInstalledJsonSourceLocatorMaker,
+		private Parser $phpParser,
+		private Parser $php8Parser,
+		private FileNodesFetcher $fileNodesFetcher,
+		private PhpStormStubsSourceStubber $phpstormStubsSourceStubber,
+		private ReflectionSourceStubber $reflectionSourceStubber,
+		private PhpVersion $phpVersion,
+		private array $fileExtensions,
+		private ?array $excludePaths,
+	)
+	{
+	}
+
+	public function create(): SourceLocator
+	{
+		$classLoaders = ClassLoader::getRegisteredLoaders();
+		$classLoaderReflection = new ReflectionClass(ClassLoader::class);
+		$cacheKey = sha1(serialize([
+			$this->phpVersion->getVersionId(),
+			$this->fileExtensions,
+			$this->excludePaths,
+		]));
+		if ($classLoaderReflection->hasProperty('vendorDir') && ! isset(self::$composerSourceLocatorsCache[$cacheKey])) {
+			$composerLocators = [];
+			$vendorDirProperty = $classLoaderReflection->getProperty('vendorDir');
+			$vendorDirProperty->setAccessible(true);
+			foreach ($classLoaders as $classLoader) {
+				$composerProjectPath = dirname($vendorDirProperty->getValue($classLoader));
+				if (!is_file($composerProjectPath . '/composer.json')) {
+					continue;
+				}
+
+				$composerSourceLocator = $this->composerJsonAndInstalledJsonSourceLocatorMaker->create($composerProjectPath);
+				if ($composerSourceLocator === null) {
+					continue;
+				}
+				$composerLocators[] = $composerSourceLocator;
+			}
+
+			self::$composerSourceLocatorsCache[$cacheKey] = $composerLocators;
+		}
+
+		$locators = self::$composerSourceLocatorsCache[$cacheKey] ?? [];
+		$astLocator = new Locator($this->phpParser);
+		$astPhp8Locator = new Locator($this->php8Parser);
+
+		$locators[] = new PhpInternalSourceLocator($astPhp8Locator, $this->phpstormStubsSourceStubber);
+		$locators[] = new AutoloadSourceLocator($this->fileNodesFetcher, true);
+		$locators[] = new PhpVersionBlacklistSourceLocator(new PhpInternalSourceLocator($astLocator, $this->reflectionSourceStubber), $this->phpstormStubsSourceStubber);
+		$locators[] = new PhpVersionBlacklistSourceLocator(new EvaledCodeSourceLocator($astLocator, $this->reflectionSourceStubber), $this->phpstormStubsSourceStubber);
+
+		return new MemoizingSourceLocator(new AggregateSourceLocator($locators));
+	}
+
+}
diff --git a/src/Testing/TypeInferenceTestCase.php b/src/Testing/TypeInferenceTestCase.php
new file mode 100644
index 00000000..bc7dd7b1
--- /dev/null
+++ b/src/Testing/TypeInferenceTestCase.php
@@ -0,0 +1,368 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\NodeScopeResolver;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\ScopeContext;
+use PHPStan\DependencyInjection\Type\DynamicThrowTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterClosureTypeExtensionProvider;
+use PHPStan\DependencyInjection\Type\ParameterOutTypeExtensionProvider;
+use PHPStan\File\FileHelper;
+use PHPStan\File\SystemAgnosticSimpleRelativePathHelper;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\PhpDocInheritanceResolver;
+use PHPStan\PhpDoc\StubPhpDocProvider;
+use PHPStan\Reflection\AttributeReflectionFactory;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
+use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\FileTypeMapper;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use Symfony\Component\Finder\Finder;
+use function array_map;
+use function array_merge;
+use function count;
+use function fclose;
+use function fgets;
+use function fopen;
+use function in_array;
+use function is_dir;
+use function is_string;
+use function preg_match;
+use function sprintf;
+use function stripos;
+use function strpos;
+use function strtolower;
+use function version_compare;
+use const PHP_VERSION;
+
+/** @api */
+abstract class TypeInferenceTestCase extends PHPStanTestCase
+{
+
+	/**
+	 * @param callable(Node , Scope ): void $callback
+	 * @param string[] $dynamicConstantNames
+	 */
+	public static function processFile(
+		string $file,
+		callable $callback,
+		array $dynamicConstantNames = [],
+	): void
+	{
+		$reflectionProvider = self::createReflectionProvider();
+		$typeSpecifier = self::getContainer()->getService('typeSpecifier');
+		$fileHelper = self::getContainer()->getByType(FileHelper::class);
+		$resolver = new NodeScopeResolver(
+			$reflectionProvider,
+			self::getContainer()->getByType(InitializerExprTypeResolver::class),
+			self::getReflector(),
+			self::getClassReflectionExtensionRegistryProvider(),
+			self::getContainer()->getByType(ParameterOutTypeExtensionProvider::class),
+			self::getParser(),
+			self::getContainer()->getByType(FileTypeMapper::class),
+			self::getContainer()->getByType(StubPhpDocProvider::class),
+			self::getContainer()->getByType(PhpVersion::class),
+			self::getContainer()->getByType(SignatureMapProvider::class),
+			self::getContainer()->getByType(AttributeReflectionFactory::class),
+			self::getContainer()->getByType(PhpDocInheritanceResolver::class),
+			self::getContainer()->getByType(FileHelper::class),
+			$typeSpecifier,
+			self::getContainer()->getByType(DynamicThrowTypeExtensionProvider::class),
+			self::getContainer()->getByType(ReadWritePropertiesExtensionProvider::class),
+			self::getContainer()->getByType(ParameterClosureTypeExtensionProvider::class),
+			self::createScopeFactory($reflectionProvider, $typeSpecifier),
+			self::getContainer()->getParameter('polluteScopeWithLoopInitialAssignments'),
+			self::getContainer()->getParameter('polluteScopeWithAlwaysIterableForeach'),
+			self::getContainer()->getParameter('polluteScopeWithBlock'),
+			static::getEarlyTerminatingMethodCalls(),
+			static::getEarlyTerminatingFunctionCalls(),
+			self::getContainer()->getParameter('universalObjectCratesClasses'),
+			self::getContainer()->getParameter('exceptions')['implicitThrows'],
+			self::getContainer()->getParameter('treatPhpDocTypesAsCertain'),
+		);
+		$resolver->setAnalysedFiles(array_map(static fn (string $file): string => $fileHelper->normalizePath($file), array_merge([$file], static::getAdditionalAnalysedFiles())));
+
+		$scopeFactory = self::createScopeFactory($reflectionProvider, $typeSpecifier, $dynamicConstantNames);
+		$scope = $scopeFactory->create(ScopeContext::create($file));
+
+		$resolver->processNodes(
+			self::getParser()->parseFile($file),
+			$scope,
+			$callback,
+		);
+	}
+
+	/**
+	 * @api
+	 * @param mixed ...$args
+	 */
+	public function assertFileAsserts(
+		string $assertType,
+		string $file,
+		...$args,
+	): void
+	{
+		if ($assertType === 'type') {
+			if ($args[0] instanceof Type) {
+				// backward compatibility
+				$expectedType = $args[0];
+				$this->assertInstanceOf(ConstantScalarType::class, $expectedType);
+				$expected = $expectedType->getValue();
+				$actualType = $args[1];
+				$actual = $actualType->describe(VerbosityLevel::precise());
+			} else {
+				$expected = $args[0];
+				$actual = $args[1];
+			}
+
+			$this->assertSame(
+				$expected,
+				$actual,
+				sprintf('Expected type %s, got type %s in %s on line %d.', $expected, $actual, $file, $args[2]),
+			);
+		} elseif ($assertType === 'variableCertainty') {
+			$expectedCertainty = $args[0];
+			$actualCertainty = $args[1];
+			$variableName = $args[2];
+			$this->assertTrue(
+				$expectedCertainty->equals($actualCertainty),
+				sprintf('Expected %s, actual certainty of %s is %s in %s on line %d.', $expectedCertainty->describe(), $variableName, $actualCertainty->describe(), $file, $args[3]),
+			);
+		}
+	}
+
+	/**
+	 * @api
+	 * @return array<string, mixed[]>
+	 */
+	public static function gatherAssertTypes(string $file): array
+	{
+		$fileHelper = self::getContainer()->getByType(FileHelper::class);
+
+		$relativePathHelper = new SystemAgnosticSimpleRelativePathHelper($fileHelper);
+
+		$file = $fileHelper->normalizePath($file);
+
+		$asserts = [];
+		self::processFile($file, static function (Node $node, Scope $scope) use (&$asserts, $file, $relativePathHelper): void {
+			if (!$node instanceof Node\Expr\FuncCall) {
+				return;
+			}
+
+			$nameNode = $node->name;
+			if (!$nameNode instanceof Name) {
+				return;
+			}
+
+			$functionName = $nameNode->toString();
+			if (in_array(strtolower($functionName), ['asserttype', 'assertnativetype', 'assertvariablecertainty'], true)) {
+				self::fail(sprintf(
+					'Missing use statement for %s() in %s on line %d.',
+					$functionName,
+					$relativePathHelper->getRelativePath($file),
+					$node->getStartLine(),
+				));
+			} elseif ($functionName === 'PHPStan\\Testing\\assertType') {
+				$expectedType = $scope->getType($node->getArgs()[0]->value);
+				if (!$expectedType instanceof ConstantScalarType) {
+					self::fail(sprintf(
+						'Expected type must be a literal string, %s given in %s on line %d.',
+						$expectedType->describe(VerbosityLevel::precise()),
+						$relativePathHelper->getRelativePath($file),
+						$node->getStartLine(),
+					));
+				}
+				$actualType = $scope->getType($node->getArgs()[1]->value);
+				$assert = ['type', $file, $expectedType->getValue(), $actualType->describe(VerbosityLevel::precise()), $node->getStartLine()];
+			} elseif ($functionName === 'PHPStan\\Testing\\assertNativeType') {
+				$expectedType = $scope->getType($node->getArgs()[0]->value);
+				if (!$expectedType instanceof ConstantScalarType) {
+					self::fail(sprintf(
+						'Expected type must be a literal string, %s given in %s on line %d.',
+						$expectedType->describe(VerbosityLevel::precise()),
+						$relativePathHelper->getRelativePath($file),
+						$node->getStartLine(),
+					));
+				}
+
+				$actualType = $scope->getNativeType($node->getArgs()[1]->value);
+				$assert = ['type', $file, $expectedType->getValue(), $actualType->describe(VerbosityLevel::precise()), $node->getStartLine()];
+			} elseif ($functionName === 'PHPStan\\Testing\\assertVariableCertainty') {
+				$certainty = $node->getArgs()[0]->value;
+				if (!$certainty instanceof StaticCall) {
+					self::fail(sprintf('First argument of %s() must be TrinaryLogic call', $functionName));
+				}
+				if (!$certainty->class instanceof Node\Name) {
+					self::fail(sprintf('ERROR: Invalid TrinaryLogic call.'));
+				}
+
+				if ($certainty->class->toString() !== 'PHPStan\\TrinaryLogic') {
+					self::fail(sprintf('ERROR: Invalid TrinaryLogic call.'));
+				}
+
+				if (!$certainty->name instanceof Node\Identifier) {
+					self::fail(sprintf('ERROR: Invalid TrinaryLogic call.'));
+				}
+
+				// @phpstan-ignore staticMethod.dynamicName
+				$expectedertaintyValue = TrinaryLogic::{$certainty->name->toString()}();
+				$variable = $node->getArgs()[1]->value;
+				if ($variable instanceof Node\Expr\Variable && is_string($variable->name)) {
+					$actualCertaintyValue = $scope->hasVariableType($variable->name);
+					$variableDescription = sprintf('variable $%s', $variable->name);
+				} elseif ($variable instanceof Node\Expr\ArrayDimFetch && $variable->dim !== null) {
+					$offset = $scope->getType($variable->dim);
+					$actualCertaintyValue = $scope->getType($variable->var)->hasOffsetValueType($offset);
+					$variableDescription = sprintf('offset %s', $offset->describe(VerbosityLevel::precise()));
+				} else {
+					self::fail(sprintf('ERROR: Invalid assertVariableCertainty call.'));
+				}
+
+				$assert = ['variableCertainty', $file, $expectedertaintyValue, $actualCertaintyValue, $variableDescription, $node->getStartLine()];
+			} else {
+				$correctFunction = null;
+
+				$assertFunctions = [
+					'assertType' => 'PHPStan\\Testing\\assertType',
+					'assertNativeType' => 'PHPStan\\Testing\\assertNativeType',
+					'assertVariableCertainty' => 'PHPStan\\Testing\\assertVariableCertainty',
+				];
+				foreach ($assertFunctions as $assertFn => $fqFunctionName) {
+					if (stripos($functionName, $assertFn) === false) {
+						continue;
+					}
+
+					$correctFunction = $fqFunctionName;
+				}
+
+				if ($correctFunction === null) {
+					return;
+				}
+
+				self::fail(sprintf(
+					'Function %s imported with wrong namespace %s called in %s on line %d.',
+					$correctFunction,
+					$functionName,
+					$relativePathHelper->getRelativePath($file),
+					$node->getStartLine(),
+				));
+			}
+
+			if (count($node->getArgs()) !== 2) {
+				self::fail(sprintf(
+					'ERROR: Wrong %s() call in %s on line %d.',
+					$functionName,
+					$relativePathHelper->getRelativePath($file),
+					$node->getStartLine(),
+				));
+			}
+
+			$asserts[$file . ':' . $node->getStartLine()] = $assert;
+		});
+
+		if (count($asserts) === 0) {
+			self::fail(sprintf('File %s does not contain any asserts', $file));
+		}
+
+		return $asserts;
+	}
+
+	/**
+	 * @api
+	 * @return array<string, mixed[]>
+	 */
+	public static function gatherAssertTypesFromDirectory(string $directory): array
+	{
+		$asserts = [];
+		foreach (self::findTestDataFilesFromDirectory($directory) as $path) {
+			foreach (self::gatherAssertTypes($path) as $key => $assert) {
+				$asserts[$key] = $assert;
+			}
+		}
+
+		return $asserts;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public static function findTestDataFilesFromDirectory(string $directory): array
+	{
+		if (!is_dir($directory)) {
+			self::fail(sprintf('Directory %s does not exist.', $directory));
+		}
+
+		$finder = new Finder();
+		$finder->followLinks();
+		$files = [];
+		foreach ($finder->files()->name('*.php')->in($directory) as $fileInfo) {
+			$path = $fileInfo->getPathname();
+			if (self::isFileLintSkipped($path)) {
+				continue;
+			}
+			$files[] = $path;
+		}
+
+		return $files;
+	}
+
+	/**
+	 * From https://github.com/php-parallel-lint/PHP-Parallel-Lint/blob/0c2706086ac36dce31967cb36062ff8915fe03f7/bin/skip-linting.php
+	 *
+	 * Copyright (c) 2012, Jakub Onderka
+	 */
+	private static function isFileLintSkipped(string $file): bool
+	{
+		$f = @fopen($file, 'r');
+		if ($f !== false) {
+			$firstLine = fgets($f);
+			if ($firstLine === false) {
+				return false;
+			}
+
+			// ignore shebang line
+			if (strpos($firstLine, '#!') === 0) {
+				$firstLine = fgets($f);
+				if ($firstLine === false) {
+					return false;
+				}
+			}
+
+			@fclose($f);
+
+			if (preg_match('~<?php\\s*\\/\\/\s*lint\s*([^\d\s]+)\s*([^\s]+)\s*~i', $firstLine, $m) === 1) {
+				return version_compare(PHP_VERSION, $m[2], $m[1]) === false;
+			}
+		}
+
+		return false;
+	}
+
+	/** @return string[] */
+	protected static function getAdditionalAnalysedFiles(): array
+	{
+		return [];
+	}
+
+	/** @return string[][] */
+	protected static function getEarlyTerminatingMethodCalls(): array
+	{
+		return [];
+	}
+
+	/** @return string[] */
+	protected static function getEarlyTerminatingFunctionCalls(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Testing/functions.php b/src/Testing/functions.php
new file mode 100644
index 00000000..a780927e
--- /dev/null
+++ b/src/Testing/functions.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Testing;
+return;
+
+use PHPStan\TrinaryLogic;
+
+/**
+ * Asserts the static type of a value.
+ *
+ * @phpstan-pure
+ * @param mixed $value
+ * @return mixed
+ *
+ * @throws void
+ */
+function assertType(string $type, $value) // phpcs:ignore
+{
+	return null;
+}
+
+/**
+ * Asserts the static type of a value.
+ *
+ * The difference from assertType() is that it doesn't resolve
+ * method/function parameter phpDocs.
+ *
+ * @phpstan-pure
+ * @param mixed $value
+ * @return mixed
+ *
+ * @throws void
+ */
+function assertNativeType(string $type, $value) // phpcs:ignore
+{
+	return null;
+}
+
+/**
+ * @phpstan-pure
+ * @param mixed $variable
+ * @return mixed
+ *
+ * @throws void
+ */
+function assertVariableCertainty(TrinaryLogic $certainty, $variable) // phpcs:ignore
+{
+	return null;
+}
diff --git a/src/TrinaryLogic.php b/src/TrinaryLogic.php
new file mode 100644
index 00000000..ae2d1f18
--- /dev/null
+++ b/src/TrinaryLogic.php
@@ -0,0 +1,255 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function array_column;
+use function max;
+use function min;
+
+/**
+ * @api
+ * @see https://phpstan.org/developing-extensions/trinary-logic
+ */
+final class TrinaryLogic
+{
+
+	private const YES = 1;
+	private const MAYBE = 0;
+	private const NO = -1;
+
+	/** @var self[] */
+	private static array $registry = [];
+
+	private function __construct(private int $value)
+	{
+	}
+
+	public static function createYes(): self
+	{
+		return self::$registry[self::YES] ??= new self(self::YES);
+	}
+
+	public static function createNo(): self
+	{
+		return self::$registry[self::NO] ??= new self(self::NO);
+	}
+
+	public static function createMaybe(): self
+	{
+		return self::$registry[self::MAYBE] ??= new self(self::MAYBE);
+	}
+
+	public static function createFromBoolean(bool $value): self
+	{
+		$yesNo = $value ? self::YES : self::NO;
+		return self::$registry[$yesNo] ??= new self($yesNo);
+	}
+
+	private static function create(int $value): self
+	{
+		self::$registry[$value] ??= new self($value);
+		return self::$registry[$value];
+	}
+
+	public function yes(): bool
+	{
+		return $this->value === self::YES;
+	}
+
+	public function maybe(): bool
+	{
+		return $this->value === self::MAYBE;
+	}
+
+	public function no(): bool
+	{
+		return $this->value === self::NO;
+	}
+
+	public function toBooleanType(): BooleanType
+	{
+		if ($this->value === self::MAYBE) {
+			return new BooleanType();
+		}
+
+		return new ConstantBooleanType($this->value === self::YES);
+	}
+
+	public function and(self ...$operands): self
+	{
+		$operandValues = array_column($operands, 'value');
+		$operandValues[] = $this->value;
+		return self::create(min($operandValues));
+	}
+
+	/**
+	 * @template T
+	 * @param T[] $objects
+	 * @param callable(T): self $callback
+	 */
+	public function lazyAnd(
+		array $objects,
+		callable $callback,
+	): self
+	{
+		if ($this->no()) {
+			return $this;
+		}
+
+		$results = [];
+		foreach ($objects as $object) {
+			$result = $callback($object);
+			if ($result->no()) {
+				return $result;
+			}
+
+			$results[] = $result;
+		}
+
+		return $this->and(...$results);
+	}
+
+	public function or(self ...$operands): self
+	{
+		$operandValues = array_column($operands, 'value');
+		$operandValues[] = $this->value;
+		return self::create(max($operandValues));
+	}
+
+	/**
+	 * @template T
+	 * @param T[] $objects
+	 * @param callable(T): self $callback
+	 */
+	public function lazyOr(
+		array $objects,
+		callable $callback,
+	): self
+	{
+		if ($this->yes()) {
+			return $this;
+		}
+
+		$results = [];
+		foreach ($objects as $object) {
+			$result = $callback($object);
+			if ($result->yes()) {
+				return $result;
+			}
+
+			$results[] = $result;
+		}
+
+		return $this->or(...$results);
+	}
+
+	public static function extremeIdentity(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+		$operandValues = array_column($operands, 'value');
+		$min = min($operandValues);
+		$max = max($operandValues);
+		return self::create($min === $max ? $min : self::MAYBE);
+	}
+
+	/**
+	 * @template T
+	 * @param T[] $objects
+	 * @param callable(T): self $callback
+	 */
+	public static function lazyExtremeIdentity(
+		array $objects,
+		callable $callback,
+	): self
+	{
+		if ($objects === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$lastResult = null;
+		foreach ($objects as $object) {
+			$result = $callback($object);
+			if ($lastResult === null) {
+				$lastResult = $result;
+				continue;
+			}
+			if ($lastResult->equals($result)) {
+				continue;
+			}
+
+			return self::createMaybe();
+		}
+
+		return $lastResult;
+	}
+
+	public static function maxMin(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+		$operandValues = array_column($operands, 'value');
+		return self::create(max($operandValues) > 0 ? 1 : min($operandValues));
+	}
+
+	/**
+	 * @template T
+	 * @param T[] $objects
+	 * @param callable(T): self $callback
+	 */
+	public static function lazyMaxMin(
+		array $objects,
+		callable $callback,
+	): self
+	{
+		$results = [];
+		foreach ($objects as $object) {
+			$result = $callback($object);
+			if ($result->yes()) {
+				return $result;
+			}
+
+			$results[] = $result;
+		}
+
+		return self::maxMin(...$results);
+	}
+
+	public function negate(): self
+	{
+		return self::create(-$this->value);
+	}
+
+	public function equals(self $other): bool
+	{
+		return $this === $other;
+	}
+
+	public function compareTo(self $other): ?self
+	{
+		if ($this->value > $other->value) {
+			return $this;
+		} elseif ($other->value > $this->value) {
+			return $other;
+		}
+
+		return null;
+	}
+
+	public function describe(): string
+	{
+		static $labels = [
+			self::NO => 'No',
+			self::MAYBE => 'Maybe',
+			self::YES => 'Yes',
+		];
+
+		return $labels[$this->value];
+	}
+
+}
diff --git a/src/Type/AcceptsResult.php b/src/Type/AcceptsResult.php
new file mode 100644
index 00000000..f83b4056
--- /dev/null
+++ b/src/Type/AcceptsResult.php
@@ -0,0 +1,131 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use function array_map;
+use function array_merge;
+use function array_unique;
+use function array_values;
+
+/**
+ * @api
+ */
+final class AcceptsResult
+{
+
+	/**
+	 * @api
+	 * @param list<string> $reasons
+	 */
+	public function __construct(
+		public readonly TrinaryLogic $result,
+		public readonly array $reasons,
+	)
+	{
+	}
+
+	public function yes(): bool
+	{
+		return $this->result->yes();
+	}
+
+	public function maybe(): bool
+	{
+		return $this->result->maybe();
+	}
+
+	public function no(): bool
+	{
+		return $this->result->no();
+	}
+
+	public static function createYes(): self
+	{
+		return new self(TrinaryLogic::createYes(), []);
+	}
+
+	/**
+	 * @param list<string> $reasons
+	 */
+	public static function createNo(array $reasons = []): self
+	{
+		return new self(TrinaryLogic::createNo(), $reasons);
+	}
+
+	public static function createMaybe(): self
+	{
+		return new self(TrinaryLogic::createMaybe(), []);
+	}
+
+	public static function createFromBoolean(bool $value): self
+	{
+		return new self(TrinaryLogic::createFromBoolean($value), []);
+	}
+
+	public function and(self $other): self
+	{
+		return new self(
+			$this->result->and($other->result),
+			array_values(array_unique(array_merge($this->reasons, $other->reasons))),
+		);
+	}
+
+	public function or(self $other): self
+	{
+		return new self(
+			$this->result->or($other->result),
+			array_values(array_unique(array_merge($this->reasons, $other->reasons))),
+		);
+	}
+
+	/**
+	 * @param callable(string): string $cb
+	 */
+	public function decorateReasons(callable $cb): self
+	{
+		$reasons = [];
+		foreach ($this->reasons as $reason) {
+			$reasons[] = $cb($reason);
+		}
+
+		return new self($this->result, $reasons);
+	}
+
+	public static function extremeIdentity(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$result = TrinaryLogic::extremeIdentity(...array_map(static fn (self $result) => $result->result, $operands));
+		$reasons = [];
+		foreach ($operands as $operand) {
+			foreach ($operand->reasons as $reason) {
+				$reasons[] = $reason;
+			}
+		}
+
+		return new self($result, array_values(array_unique($reasons)));
+	}
+
+	public static function maxMin(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$result = TrinaryLogic::maxMin(...array_map(static fn (self $result) => $result->result, $operands));
+		$reasons = [];
+		foreach ($operands as $operand) {
+			foreach ($operand->reasons as $reason) {
+				$reasons[] = $reason;
+			}
+		}
+
+		return new self($result, array_values(array_unique($reasons)));
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryArrayListType.php b/src/Type/Accessory/AccessoryArrayListType.php
new file mode 100644
index 00000000..e0c6f265
--- /dev/null
+++ b/src/Type/Accessory/AccessoryArrayListType.php
@@ -0,0 +1,503 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+/** @api */
+class AccessoryArrayListType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonObjectTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		$isArray = $type->isArray();
+		$isList = $type->isList();
+
+		return new AcceptsResult($isArray->and($isList), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return new IsSuperTypeOfResult($type->isArray()->and($type->isList()), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isArray()->and($otherType->isList()), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'list';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $this->getIterableKeyType()->isSuperTypeOf($offsetType)->result->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($offsetType === null || (new ConstantIntegerType(0))->isSuperTypeOf($offsetType)->yes()) {
+			return $this;
+		}
+
+		return new ErrorType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		if ((new ConstantIntegerType(0))->isSuperTypeOf($offsetType)->yes()) {
+			return $this;
+		}
+
+		return new ErrorType();
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return $this;
+		}
+
+		return new ErrorType();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this;
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this;
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new MixedType();
+	}
+
+	public function flipArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		if ($otherArraysType->isList()->yes()) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function popArray(): Type
+	{
+		return $this;
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		if ($preserveKeys->no()) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new MixedType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this;
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this;
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if ($preserveKeys->no()) {
+			return $this;
+		}
+
+		if ((new ConstantIntegerType(0))->isSuperTypeOf($offsetType)->yes()) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new ConstantIntegerType(0);
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantIntegerType(0),
+			new ConstantIntegerType(1),
+		);
+	}
+
+	public function toFloat(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantFloatType(0.0),
+			new ConstantFloatType(1.0),
+		);
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return $this;
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('list');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryLiteralStringType.php b/src/Type/Accessory/AccessoryLiteralStringType.php
new file mode 100644
index 00000000..247f0f92
--- /dev/null
+++ b/src/Type/Accessory/AccessoryLiteralStringType.php
@@ -0,0 +1,375 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryLiteralStringType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+	use NonRemoveableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof MixedType) {
+			return AcceptsResult::createNo();
+		}
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isLiteralString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isLiteralString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isLiteralString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'literal-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new StringType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		if ($valueType->isLiteralString()->yes()) {
+			return $this;
+		}
+
+		return new StringType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('literal-string');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryLowercaseStringType.php b/src/Type/Accessory/AccessoryLowercaseStringType.php
new file mode 100644
index 00000000..ba559fe0
--- /dev/null
+++ b/src/Type/Accessory/AccessoryLowercaseStringType.php
@@ -0,0 +1,380 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryLowercaseStringType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+	use NonRemoveableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isLowercaseString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isLowercaseString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isLowercaseString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'lowercase-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new IntersectionType([new StringType(), new AccessoryLowercaseStringType()]);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		if ($valueType->isLowercaseString()->yes()) {
+			return $this;
+		}
+
+		return new StringType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if (
+			$type->isString()->yes()
+			&& $type->isLowercaseString()->no()
+			&& ($type->isNumericString()->no() || $this->isNumericString()->no())
+		) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('lowercase-string');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryNonEmptyStringType.php b/src/Type/Accessory/AccessoryNonEmptyStringType.php
new file mode 100644
index 00000000..20beeed1
--- /dev/null
+++ b/src/Type/Accessory/AccessoryNonEmptyStringType.php
@@ -0,0 +1,385 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryNonEmptyStringType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedBooleanTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isNonEmptyString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type->isNonFalsyString()->yes()) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isNonEmptyString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isNonEmptyString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'non-empty-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		if ((new ConstantIntegerType(0))->isSuperTypeOf($offsetType)->yes()) {
+			return new IntersectionType([new StringType(), new AccessoryNonEmptyStringType()]);
+		}
+
+		return new StringType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isNull()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		if ($type->isString()->yes() && $type->isNonEmptyString()->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ConstantStringType && $typeToRemove->getValue() === '0') {
+			return TypeCombinator::intersect($this, new AccessoryNonFalsyStringType());
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('non-empty-string');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryNonFalsyStringType.php b/src/Type/Accessory/AccessoryNonFalsyStringType.php
new file mode 100644
index 00000000..a5d452d2
--- /dev/null
+++ b/src/Type/Accessory/AccessoryNonFalsyStringType.php
@@ -0,0 +1,374 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryNonFalsyStringType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+	use NonRemoveableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isNonFalsyString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isNonFalsyString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		if ($otherType instanceof AccessoryNonEmptyStringType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isNonFalsyString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'non-falsy-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new StringType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		if ($valueType->isNonFalsyString()->yes()) {
+			return $this;
+		}
+
+		return new StringType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		$falseyTypes = StaticTypeFactory::falsey();
+		if ($falseyTypes->isSuperTypeOf($type)->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('non-falsy-string');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryNumericStringType.php b/src/Type/Accessory/AccessoryNumericStringType.php
new file mode 100644
index 00000000..670b0772
--- /dev/null
+++ b/src/Type/Accessory/AccessoryNumericStringType.php
@@ -0,0 +1,387 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryNumericStringType implements CompoundType, AccessoryType
+{
+
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isNumericString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isNumericString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isNumericString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		if ($acceptingType->isNonFalsyString()->yes()) {
+			return AcceptsResult::createMaybe();
+		}
+
+		if ($acceptingType->isNonEmptyString()->yes()) {
+			return AcceptsResult::createYes();
+		}
+
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'numeric-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new StringType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new UnionType([
+			$this->toInteger(),
+			$this->toFloat(),
+		]);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isNull()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		if ($type->isString()->yes() && $type->isNumericString()->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ConstantStringType && $typeToRemove->getValue() === '0') {
+			return TypeCombinator::intersect($this, new AccessoryNonFalsyStringType());
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('numeric-string');
+	}
+
+}
diff --git a/src/Type/Accessory/AccessoryType.php b/src/Type/Accessory/AccessoryType.php
new file mode 100644
index 00000000..44789663
--- /dev/null
+++ b/src/Type/Accessory/AccessoryType.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Type\Type;
+
+interface AccessoryType extends Type
+{
+
+}
diff --git a/src/Type/Accessory/AccessoryUppercaseStringType.php b/src/Type/Accessory/AccessoryUppercaseStringType.php
new file mode 100644
index 00000000..1509520c
--- /dev/null
+++ b/src/Type/Accessory/AccessoryUppercaseStringType.php
@@ -0,0 +1,380 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class AccessoryUppercaseStringType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonObjectTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGenericTypeTrait;
+	use NonRemoveableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isUppercaseString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return new IsSuperTypeOfResult($type->isUppercaseString(), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isUppercaseString(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'uppercase-string';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new IntersectionType([new StringType(), new AccessoryUppercaseStringType()]);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$stringOffset = (new StringType())->setOffsetValueType($offsetType, $valueType, $unionValues);
+
+		if ($stringOffset instanceof ErrorType) {
+			return $stringOffset;
+		}
+
+		if ($valueType->isUppercaseString()->yes()) {
+			return $this;
+		}
+
+		return new StringType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if (
+			$type->isString()->yes()
+			&& $type->isUppercaseString()->no()
+			&& ($type->isNumericString()->no() || $this->isNumericString()->no())
+		) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new StringType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('uppercase-string');
+	}
+
+}
diff --git a/src/Type/Accessory/HasMethodType.php b/src/Type/Accessory/HasMethodType.php
new file mode 100644
index 00000000..e84b4ecf
--- /dev/null
+++ b/src/Type/Accessory/HasMethodType.php
@@ -0,0 +1,200 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\Dummy\DummyMethodReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\ObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+use function strtolower;
+
+class HasMethodType implements AccessoryType, CompoundType
+{
+
+	use ObjectTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct(private string $methodName)
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	private function getCanonicalMethodName(): string
+	{
+		return strtolower($this->methodName);
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createFromBoolean($this->equals($type));
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		return new IsSuperTypeOfResult($type->hasMethod($this->methodName), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		if ($this->isCallable()->yes() && $otherType->isCallable()->yes()) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($otherType instanceof self) {
+			$limit = IsSuperTypeOfResult::createYes();
+		} else {
+			$limit = IsSuperTypeOfResult::createMaybe();
+		}
+
+		return $limit->and(new IsSuperTypeOfResult($otherType->hasMethod($this->methodName), []));
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->getCanonicalMethodName() === $type->getCanonicalMethodName();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('hasMethod(%s)', $this->methodName);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		if ($this->getCanonicalMethodName() === strtolower($methodName)) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$method = new DummyMethodReflection($this->methodName);
+		return new CallbackUnresolvedMethodPrototypeReflection(
+			$method,
+			$method->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		if ($this->getCanonicalMethodName() === '__invoke') {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function toString(): Type
+	{
+		if ($this->getCanonicalMethodName() === '__tostring') {
+			return new StringType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [
+			new TrivialParametersAcceptor(),
+		];
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode(''); // no PHPDoc representation
+	}
+
+}
diff --git a/src/Type/Accessory/HasOffsetType.php b/src/Type/Accessory/HasOffsetType.php
new file mode 100644
index 00000000..5e2fe182
--- /dev/null
+++ b/src/Type/Accessory/HasOffsetType.php
@@ -0,0 +1,427 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Traits\MaybeArrayTypeTrait;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\MaybeIterableTypeTrait;
+use PHPStan\Type\Traits\MaybeObjectTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+class HasOffsetType implements CompoundType, AccessoryType
+{
+
+	use MaybeArrayTypeTrait;
+	use MaybeCallableTypeTrait;
+	use MaybeIterableTypeTrait;
+	use MaybeObjectTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/**
+	 * @api
+	 */
+	public function __construct(private ConstantStringType|ConstantIntegerType $offsetType)
+	{
+	}
+
+	/**
+	 * @return ConstantStringType|ConstantIntegerType
+	 */
+	public function getOffsetType(): Type
+	{
+		return $this->offsetType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isOffsetAccessible()->and($type->hasOffsetValueType($this->offsetType)), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+		return new IsSuperTypeOfResult($type->isOffsetAccessible()->and($type->hasOffsetValueType($this->offsetType)), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		$result = new IsSuperTypeOfResult($otherType->isOffsetAccessible()->and($otherType->hasOffsetValueType($this->offsetType)), []);
+
+		return $result
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->offsetType->equals($type->offsetType);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('hasOffset(%s)', $this->offsetType->describe($level));
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($offsetType->isConstantScalarValue()->yes() && $offsetType->equals($this->offsetType)) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		if ($this->offsetType->isSuperTypeOf($offsetType)->yes()) {
+			return new ErrorType();
+		}
+		return $this;
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		if ($otherArraysType->hasOffsetValueType($this->offsetType)->yes()) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		if ($preserveKeys->yes()) {
+			return $this;
+		}
+
+		return new NonEmptyArrayType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if (
+			$this->offsetType->isSuperTypeOf($offsetType)->yes()
+			&& ($lengthType->isNull()->yes() || IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($lengthType)->yes())
+		) {
+			return $preserveKeys->yes()
+				? TypeCombinator::intersect($this, new NonEmptyArrayType())
+				: new NonEmptyArrayType();
+		}
+
+		return new MixedType();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		if ($this->offsetType->isString()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode(''); // no PHPDoc representation
+	}
+
+}
diff --git a/src/Type/Accessory/HasOffsetValueType.php b/src/Type/Accessory/HasOffsetValueType.php
new file mode 100644
index 00000000..4be71e1b
--- /dev/null
+++ b/src/Type/Accessory/HasOffsetValueType.php
@@ -0,0 +1,487 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Traits\MaybeArrayTypeTrait;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\MaybeIterableTypeTrait;
+use PHPStan\Type\Traits\MaybeObjectTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+class HasOffsetValueType implements CompoundType, AccessoryType
+{
+
+	use MaybeArrayTypeTrait;
+	use MaybeCallableTypeTrait;
+	use MaybeIterableTypeTrait;
+	use MaybeObjectTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(private ConstantStringType|ConstantIntegerType $offsetType, private Type $valueType)
+	{
+	}
+
+	public function getOffsetType(): ConstantStringType|ConstantIntegerType
+	{
+		return $this->offsetType;
+	}
+
+	public function getValueType(): Type
+	{
+		return $this->valueType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult(
+			$type->isOffsetAccessible()
+				->and($type->hasOffsetValueType($this->offsetType))
+				->and($this->valueType->accepts($type->getOffsetValueType($this->offsetType), $strictTypes)->result),
+			[],
+		);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		$result = new IsSuperTypeOfResult($type->isOffsetAccessible()->and($type->hasOffsetValueType($this->offsetType)), []);
+
+		return $result
+			->and($this->valueType->isSuperTypeOf($type->getOffsetValueType($this->offsetType)));
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		$result = new IsSuperTypeOfResult($otherType->isOffsetAccessible()->and($otherType->hasOffsetValueType($this->offsetType)), []);
+
+		return $result
+			->and($otherType->getOffsetValueType($this->offsetType)->isSuperTypeOf($this->valueType))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->offsetType->equals($type->offsetType)
+			&& $this->valueType->equals($type->valueType);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('hasOffsetValue(%s, %s)', $this->offsetType->describe($level), $this->valueType->describe($level));
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($offsetType->isConstantScalarValue()->yes() && $offsetType->equals($this->offsetType)) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($offsetType->isConstantScalarValue()->yes() && $offsetType->equals($this->offsetType)) {
+			return $this->valueType;
+		}
+
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($offsetType === null) {
+			return $this;
+		}
+
+		if (!$offsetType->equals($this->offsetType)) {
+			return $this;
+		}
+
+		if (!$offsetType instanceof ConstantIntegerType && !$offsetType instanceof ConstantStringType) {
+			throw new ShouldNotHappenException();
+		}
+
+		return new self($offsetType, $valueType);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new self($this->offsetType, $valueType);
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		if ($this->offsetType->isSuperTypeOf($offsetType)->yes()) {
+			return new ErrorType();
+		}
+		return $this;
+	}
+
+	public function getKeysArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function flipArray(): Type
+	{
+		$valueType = $this->valueType->toArrayKey();
+		if ($valueType instanceof ConstantIntegerType || $valueType instanceof ConstantStringType) {
+			return new self($valueType, $this->offsetType);
+		}
+
+		return new MixedType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		if ($otherArraysType->hasOffsetValueType($this->offsetType)->yes()) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		if ($preserveKeys->yes()) {
+			return $this;
+		}
+
+		return new NonEmptyArrayType();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		if (
+			$needleType instanceof ConstantScalarType && $this->valueType instanceof ConstantScalarType
+			&& $needleType->getValue() === $this->valueType->getValue()
+		) {
+			return $this->offsetType;
+		}
+
+		return new MixedType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return new NonEmptyArrayType();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if (
+			$this->offsetType->isSuperTypeOf($offsetType)->yes()
+			&& ($lengthType->isNull()->yes() || IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($lengthType)->yes())
+		) {
+			return $preserveKeys->yes()
+				? TypeCombinator::intersect($this, new NonEmptyArrayType())
+				: new NonEmptyArrayType();
+		}
+
+		return new MixedType();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		if ($this->offsetType->isString()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$newValueType = $cb($this->valueType);
+		if ($newValueType === $this->valueType) {
+			return $this;
+		}
+
+		return new self($this->offsetType, $newValueType);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$newValueType = $cb($this->valueType, $right->getOffsetValueType($this->offsetType));
+		if ($newValueType === $this->valueType) {
+			return $this;
+		}
+
+		return new self($this->offsetType, $newValueType);
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode(''); // no PHPDoc representation
+	}
+
+}
diff --git a/src/Type/Accessory/HasPropertyType.php b/src/Type/Accessory/HasPropertyType.php
new file mode 100644
index 00000000..f1492bc2
--- /dev/null
+++ b/src/Type/Accessory/HasPropertyType.php
@@ -0,0 +1,159 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\ObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+class HasPropertyType implements AccessoryType, CompoundType
+{
+
+	use ObjectTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct(private string $propertyName)
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function getPropertyName(): string
+	{
+		return $this->propertyName;
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createFromBoolean($this->equals($type));
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		return new IsSuperTypeOfResult($type->hasProperty($this->propertyName), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		if ($otherType instanceof self) {
+			$limit = IsSuperTypeOfResult::createYes();
+		} else {
+			$limit = IsSuperTypeOfResult::createMaybe();
+		}
+
+		return $limit->and(new IsSuperTypeOfResult($otherType->hasProperty($this->propertyName), []));
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->propertyName === $type->propertyName;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('hasProperty(%s)', $this->propertyName);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		if ($this->propertyName === $propertyName) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [new TrivialParametersAcceptor()];
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode(''); // no PHPDoc representation
+	}
+
+}
diff --git a/src/Type/Accessory/NonEmptyArrayType.php b/src/Type/Accessory/NonEmptyArrayType.php
new file mode 100644
index 00000000..d3fb4af1
--- /dev/null
+++ b/src/Type/Accessory/NonEmptyArrayType.php
@@ -0,0 +1,479 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class NonEmptyArrayType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonObjectTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		$isArray = $type->isArray();
+		$isIterableAtLeastOnce = $type->isIterableAtLeastOnce();
+
+		return new AcceptsResult($isArray->and($isIterableAtLeastOnce), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return new IsSuperTypeOfResult($type->isArray()->and($type->isIterableAtLeastOnce()), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isArray()->and($otherType->isIterableAtLeastOnce()), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'non-empty-array';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this;
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this;
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function flipArray(): Type
+	{
+		return $this;
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return new MixedType();
+	}
+
+	public function popArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new MixedType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this;
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if (
+			(new ConstantIntegerType(0))->isSuperTypeOf($offsetType)->yes()
+			&& ($lengthType->isNull()->yes() || IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($lengthType)->yes())
+		) {
+			return $this;
+		}
+
+		return new MixedType();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getArraySize(): Type
+	{
+		return IntegerRangeType::fromInterval(1, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isArray()->yes() && $type->isIterableAtLeastOnce()->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ConstantIntegerType(1);
+	}
+
+	public function toFloat(): Type
+	{
+		return new ConstantFloatType(1.0);
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return $this;
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('non-empty-array');
+	}
+
+}
diff --git a/src/Type/Accessory/OversizedArrayType.php b/src/Type/Accessory/OversizedArrayType.php
new file mode 100644
index 00000000..a9a64598
--- /dev/null
+++ b/src/Type/Accessory/OversizedArrayType.php
@@ -0,0 +1,463 @@
+<?php 
+
+namespace PHPStan\Type\Accessory;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+
+class OversizedArrayType implements CompoundType, AccessoryType
+{
+
+	use MaybeCallableTypeTrait;
+	use NonObjectTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isArray()->and($type->isIterableAtLeastOnce()), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->equals($type)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return new IsSuperTypeOfResult($type->isArray()->and($type->isOversizedArray()), []);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof UnionType || $otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isArray()->and($otherType->isOversizedArray()), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'oversized-array';
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this;
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this;
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function flipArray(): Type
+	{
+		return $this;
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return $this;
+	}
+
+	public function popArray(): Type
+	{
+		return $this;
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new MixedType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this;
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this;
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ConstantIntegerType(1);
+	}
+
+	public function toFloat(): Type
+	{
+		return new ConstantFloatType(1.0);
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new MixedType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode(''); // no PHPDoc representation
+	}
+
+}
diff --git a/src/Type/ArrayType.php b/src/Type/ArrayType.php
new file mode 100644
index 00000000..ebfb15ee
--- /dev/null
+++ b/src/Type/ArrayType.php
@@ -0,0 +1,572 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\HasOffsetValueType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateStrictMixedType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\ArrayTypeTrait;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function array_merge;
+use function count;
+use function sprintf;
+
+/** @api */
+class ArrayType implements Type
+{
+
+	use ArrayTypeTrait;
+	use MaybeCallableTypeTrait;
+	use NonObjectTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private Type $keyType;
+
+	/** @api */
+	public function __construct(Type $keyType, private Type $itemType)
+	{
+		if ($keyType->describe(VerbosityLevel::value()) === '(int|string)') {
+			$keyType = new MixedType();
+		}
+		if ($keyType instanceof StrictMixedType && !$keyType instanceof TemplateStrictMixedType) {
+			$keyType = new UnionType([new StringType(), new IntegerType()]);
+		}
+
+		$this->keyType = $keyType;
+	}
+
+	public function getKeyType(): Type
+	{
+		return $this->keyType;
+	}
+
+	public function getItemType(): Type
+	{
+		return $this->itemType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return array_merge(
+			$this->keyType->getReferencedClasses(),
+			$this->getItemType()->getReferencedClasses(),
+		);
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if ($type instanceof ConstantArrayType) {
+			$result = AcceptsResult::createYes();
+			$thisKeyType = $this->keyType;
+			$itemType = $this->getItemType();
+			foreach ($type->getKeyTypes() as $i => $keyType) {
+				$valueType = $type->getValueTypes()[$i];
+				$acceptsKey = $thisKeyType->accepts($keyType, $strictTypes);
+				$acceptsValue = $itemType->accepts($valueType, $strictTypes);
+				$result = $result->and($acceptsKey)->and($acceptsValue);
+			}
+
+			return $result;
+		}
+
+		if ($type instanceof ArrayType) {
+			return $this->getItemType()->accepts($type->getItemType(), $strictTypes)
+				->and($this->keyType->accepts($type->keyType, $strictTypes));
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self || $type instanceof ConstantArrayType) {
+			return $this->getItemType()->isSuperTypeOf($type->getItemType())
+				->and($this->getIterableKeyType()->isSuperTypeOf($type->getIterableKeyType()));
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->getItemType()->equals($type->getIterableValueType())
+			&& $this->keyType->equals($type->keyType);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$isMixedKeyType = $this->keyType instanceof MixedType && $this->keyType->describe(VerbosityLevel::precise()) === 'mixed' && !$this->keyType->isExplicitMixed();
+		$isMixedItemType = $this->itemType instanceof MixedType && $this->itemType->describe(VerbosityLevel::precise()) === 'mixed' && !$this->itemType->isExplicitMixed();
+
+		$valueHandler = function () use ($level, $isMixedKeyType, $isMixedItemType): string {
+			if ($isMixedKeyType || $this->keyType instanceof NeverType) {
+				if ($isMixedItemType || $this->itemType instanceof NeverType) {
+					return 'array';
+				}
+
+				return sprintf('array<%s>', $this->itemType->describe($level));
+			}
+
+			return sprintf('array<%s, %s>', $this->keyType->describe($level), $this->itemType->describe($level));
+		};
+
+		return $level->handle(
+			$valueHandler,
+			$valueHandler,
+			function () use ($level, $isMixedKeyType, $isMixedItemType): string {
+				if ($isMixedKeyType) {
+					if ($isMixedItemType) {
+						return 'array';
+					}
+
+					return sprintf('array<%s>', $this->itemType->describe($level));
+				}
+
+				return sprintf('array<%s, %s>', $this->keyType->describe($level), $this->itemType->describe($level));
+			},
+		);
+	}
+
+	public function generalizeValues(): self
+	{
+		return new self($this->keyType, $this->itemType->generalize(GeneralizePrecision::lessSpecific()));
+	}
+
+	public function getKeysArray(): Type
+	{
+		return TypeCombinator::intersect(new self(new IntegerType(), $this->getIterableKeyType()), new AccessoryArrayListType());
+	}
+
+	public function getValuesArray(): Type
+	{
+		return TypeCombinator::intersect(new self(new IntegerType(), $this->itemType), new AccessoryArrayListType());
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		$keyType = $this->keyType;
+		if ($keyType instanceof MixedType && !$keyType instanceof TemplateMixedType) {
+			return new BenevolentUnionType([new IntegerType(), new StringType()]);
+		}
+		if ($keyType instanceof StrictMixedType) {
+			return new BenevolentUnionType([new IntegerType(), new StringType()]);
+		}
+
+		return $keyType;
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		if (IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($this->getKeyType())->no()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isInteger()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		$offsetType = $offsetType->toArrayKey();
+
+		if ($this->getKeyType()->isSuperTypeOf($offsetType)->no()
+			&& ($offsetType->isString()->no() || !$offsetType->isConstantScalarValue()->no())
+		) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		$offsetType = $offsetType->toArrayKey();
+		if ($this->getKeyType()->isSuperTypeOf($offsetType)->no()
+			&& ($offsetType->isString()->no() || !$offsetType->isConstantScalarValue()->no())
+		) {
+			return new ErrorType();
+		}
+
+		$type = $this->getItemType();
+		if ($type instanceof ErrorType) {
+			return new MixedType();
+		}
+
+		return $type;
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($offsetType === null) {
+			$isKeyTypeInteger = $this->keyType->isInteger();
+			if ($isKeyTypeInteger->no()) {
+				$offsetType = new IntegerType();
+			} elseif ($isKeyTypeInteger->yes()) {
+				$offsetType = $this->keyType;
+			} else {
+				$integerTypes = [];
+				TypeTraverser::map($this->keyType, static function (Type $type, callable $traverse) use (&$integerTypes): Type {
+					if ($type instanceof UnionType) {
+						return $traverse($type);
+					}
+
+					$isInteger = $type->isInteger();
+					if ($isInteger->yes()) {
+						$integerTypes[] = $type;
+					}
+
+					return $type;
+				});
+				if (count($integerTypes) === 0) {
+					$offsetType = $this->keyType;
+				} else {
+					$offsetType = TypeCombinator::union(...$integerTypes);
+				}
+			}
+		} else {
+			$offsetType = $offsetType->toArrayKey();
+		}
+
+		if ($offsetType instanceof ConstantStringType || $offsetType instanceof ConstantIntegerType) {
+			if ($offsetType->isSuperTypeOf($this->keyType)->yes()) {
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+				$builder->setOffsetValueType($offsetType, $valueType);
+				return $builder->getArray();
+			}
+
+			return TypeCombinator::intersect(
+				new self(
+					TypeCombinator::union($this->keyType, $offsetType),
+					TypeCombinator::union($this->itemType, $valueType),
+				),
+				new HasOffsetValueType($offsetType, $valueType),
+				new NonEmptyArrayType(),
+			);
+		}
+
+		return TypeCombinator::intersect(
+			new self(
+				TypeCombinator::union($this->keyType, $offsetType),
+				$unionValues ? TypeCombinator::union($this->itemType, $valueType) : $valueType,
+			),
+			new NonEmptyArrayType(),
+		);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new self(
+			$this->keyType,
+			TypeCombinator::union($this->itemType, $valueType),
+		);
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		$offsetType = $offsetType->toArrayKey();
+
+		if (
+			($offsetType instanceof ConstantIntegerType || $offsetType instanceof ConstantStringType)
+			&& !$this->keyType->isSuperTypeOf($offsetType)->no()
+		) {
+			$keyType = TypeCombinator::remove($this->keyType, $offsetType);
+			if ($keyType instanceof NeverType) {
+				return new ConstantArrayType([], []);
+			}
+
+			return new self($keyType, $this->itemType);
+		}
+
+		return $this;
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		$itemType = $this->getItemType();
+		if ($itemType->isInteger()->no()) {
+			$stringKeyType = $itemType->toString();
+			if ($stringKeyType instanceof ErrorType) {
+				return $stringKeyType;
+			}
+
+			return new ArrayType($stringKeyType, $valueType);
+		}
+
+		return new ArrayType($itemType, $valueType);
+	}
+
+	public function flipArray(): Type
+	{
+		return new self($this->getIterableValueType()->toArrayKey(), $this->getIterableKeyType());
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		$isKeySuperType = $otherArraysType->getIterableKeyType()->isSuperTypeOf($this->getIterableKeyType());
+		if ($isKeySuperType->no()) {
+			return ConstantArrayTypeBuilder::createEmpty()->getArray();
+		}
+
+		if ($isKeySuperType->yes()) {
+			return $this;
+		}
+
+		return new self($otherArraysType->getIterableKeyType(), $this->getIterableValueType());
+	}
+
+	public function popArray(): Type
+	{
+		return $this;
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return TypeCombinator::union($this->getIterableKeyType(), new ConstantBooleanType(false));
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this;
+	}
+
+	public function shuffleArray(): Type
+	{
+		return TypeCombinator::intersect(new self(new IntegerType(), $this->itemType), new AccessoryArrayListType());
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this;
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe()->and($this->itemType->isString());
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		if ($this->isCallable()->no()) {
+			throw new ShouldNotHappenException();
+		}
+
+		return [new TrivialParametersAcceptor()];
+	}
+
+	public function toInteger(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantIntegerType(0),
+			new ConstantIntegerType(1),
+		);
+	}
+
+	public function toFloat(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantFloatType(0.0),
+			new ConstantFloatType(1.0),
+		);
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if ($receivedType->isArray()->yes()) {
+			$keyTypeMap = $this->getIterableKeyType()->inferTemplateTypes($receivedType->getIterableKeyType());
+			$itemTypeMap = $this->getItemType()->inferTemplateTypes($receivedType->getIterableValueType());
+
+			return $keyTypeMap->union($itemTypeMap);
+		}
+
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$variance = $positionVariance->compose(TemplateTypeVariance::createCovariant());
+
+		return array_merge(
+			$this->getIterableKeyType()->getReferencedTemplateTypes($variance),
+			$this->getItemType()->getReferencedTemplateTypes($variance),
+		);
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$keyType = $cb($this->keyType);
+		$itemType = $cb($this->itemType);
+
+		if ($keyType !== $this->keyType || $itemType !== $this->itemType) {
+			if ($keyType instanceof NeverType && $itemType instanceof NeverType) {
+				return new ConstantArrayType([], []);
+			}
+
+			return new self($keyType, $itemType);
+		}
+
+		return $this;
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		$isMixedKeyType = $this->keyType instanceof MixedType && $this->keyType->describe(VerbosityLevel::precise()) === 'mixed' && !$this->keyType->isExplicitMixed();
+		$isMixedItemType = $this->itemType instanceof MixedType && $this->itemType->describe(VerbosityLevel::precise()) === 'mixed' && !$this->itemType->isExplicitMixed();
+
+		if ($isMixedKeyType) {
+			if ($isMixedItemType) {
+				return new IdentifierTypeNode('array');
+			}
+
+			return new GenericTypeNode(
+				new IdentifierTypeNode('array'),
+				[
+					$this->itemType->toPhpDocNode(),
+				],
+			);
+		}
+
+		return new GenericTypeNode(
+			new IdentifierTypeNode('array'),
+			[
+				$this->keyType->toPhpDocNode(),
+				$this->itemType->toPhpDocNode(),
+			],
+		);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$keyType = $cb($this->keyType, $right->getIterableKeyType());
+		$itemType = $cb($this->itemType, $right->getIterableValueType());
+
+		if ($keyType !== $this->keyType || $itemType !== $this->itemType) {
+			if ($keyType instanceof NeverType && $itemType instanceof NeverType) {
+				return new ConstantArrayType([], []);
+			}
+
+			return new self($keyType, $itemType);
+		}
+
+		return $this;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove->isConstantArray()->yes() && $typeToRemove->isIterableAtLeastOnce()->no()) {
+			return TypeCombinator::intersect($this, new NonEmptyArrayType());
+		}
+
+		if ($typeToRemove instanceof NonEmptyArrayType) {
+			return new ConstantArrayType([], []);
+		}
+
+		return null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Type/BenevolentUnionType.php b/src/Type/BenevolentUnionType.php
new file mode 100644
index 00000000..4771670b
--- /dev/null
+++ b/src/Type/BenevolentUnionType.php
@@ -0,0 +1,182 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use function count;
+
+/** @api */
+class BenevolentUnionType extends UnionType
+{
+
+	/**
+	 * @api
+	 * @param Type[] $types
+	 */
+	public function __construct(array $types, bool $normalized = false)
+	{
+		parent::__construct($types, $normalized);
+	}
+
+	public function filterTypes(callable $filterCb): Type
+	{
+		$result = parent::filterTypes($filterCb);
+		if (!$result instanceof self && $result instanceof UnionType) {
+			return TypeUtils::toBenevolentUnion($result);
+		}
+
+		return $result;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return '(' . parent::describe($level) . ')';
+	}
+
+	protected function unionTypes(callable $getType): Type
+	{
+		$resultTypes = [];
+		foreach ($this->getTypes() as $type) {
+			$result = $getType($type);
+			if ($result instanceof ErrorType) {
+				continue;
+			}
+
+			$resultTypes[] = $result;
+		}
+
+		if (count($resultTypes) === 0) {
+			return new ErrorType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$resultTypes));
+	}
+
+	protected function pickFromTypes(
+		callable $getValues,
+		callable $criteria,
+	): array
+	{
+		$values = [];
+		foreach ($this->getTypes() as $type) {
+			$innerValues = $getValues($type);
+			if ($innerValues === [] && $criteria($type)) {
+				return [];
+			}
+
+			foreach ($innerValues as $innerType) {
+				$values[] = $innerType;
+			}
+		}
+
+		return $values;
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		$types = [];
+		foreach ($this->getTypes() as $innerType) {
+			$valueType = $innerType->getOffsetValueType($offsetType);
+			if ($valueType instanceof ErrorType) {
+				continue;
+			}
+
+			$types[] = $valueType;
+		}
+
+		if (count($types) === 0) {
+			return new ErrorType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
+	}
+
+	protected function unionResults(callable $getResult): TrinaryLogic
+	{
+		return TrinaryLogic::createNo()->lazyOr($this->getTypes(), $getResult);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		$result = AcceptsResult::createNo();
+		foreach ($this->getTypes() as $innerType) {
+			$result = $result->or($acceptingType->accepts($innerType, $strictTypes));
+		}
+
+		return $result;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+
+		foreach ($this->getTypes() as $type) {
+			$types = $types->benevolentUnion($type->inferTemplateTypes($receivedType));
+		}
+
+		return $types;
+	}
+
+	public function inferTemplateTypesOn(Type $templateType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+
+		foreach ($this->getTypes() as $type) {
+			$types = $types->benevolentUnion($templateType->inferTemplateTypes($type));
+		}
+
+		return $types;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		foreach ($this->getTypes() as $type) {
+			$newType = $cb($type);
+			if ($type !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		if (!$right instanceof UnionType) {
+			return $this;
+		}
+
+		if (count($this->getTypes()) !== count($right->getTypes())) {
+			return $this;
+		}
+
+		foreach ($this->getSortedTypes() as $i => $leftType) {
+			$rightType = $right->getSortedTypes()[$i];
+			$newType = $cb($leftType, $rightType);
+			if ($leftType !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
+		}
+
+		return $this;
+	}
+
+}
diff --git a/src/Type/BitwiseFlagHelper.php b/src/Type/BitwiseFlagHelper.php
new file mode 100644
index 00000000..8a9da074
--- /dev/null
+++ b/src/Type/BitwiseFlagHelper.php
@@ -0,0 +1,108 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\BinaryOp\BitwiseOr;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Name\FullyQualified;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantIntegerType;
+
+final class BitwiseFlagHelper
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	/**
+	 * @param non-empty-string $constName
+	 */
+	public function bitwiseOrContainsConstant(Expr $expr, Scope $scope, string $constName): TrinaryLogic
+	{
+		if ($expr instanceof ConstFetch) {
+			if (((string) $expr->name) === $constName) {
+				return TrinaryLogic::createYes();
+			}
+
+			$resolveConstantName = $this->reflectionProvider->resolveConstantName($expr->name, $scope);
+			if ($resolveConstantName !== null) {
+				if ($resolveConstantName === $constName) {
+					return TrinaryLogic::createYes();
+				}
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		if ($expr instanceof BitwiseOr) {
+			return TrinaryLogic::createFromBoolean($this->bitwiseOrContainsConstant($expr->left, $scope, $constName)->yes() ||
+				$this->bitwiseOrContainsConstant($expr->right, $scope, $constName)->yes());
+		}
+
+		$fqcn = new FullyQualified($constName);
+		if ($this->reflectionProvider->hasConstant($fqcn, $scope)) {
+			$constant = $this->reflectionProvider->getConstant($fqcn, $scope);
+
+			$valueType = $constant->getValueType();
+
+			if ($valueType instanceof ConstantIntegerType) {
+				return $this->exprContainsIntFlag($expr, $scope, $valueType->getValue());
+			}
+		}
+
+		return TrinaryLogic::createNo();
+	}
+
+	private function exprContainsIntFlag(Expr $expr, Scope $scope, int $flag): TrinaryLogic
+	{
+		$exprType = $scope->getType($expr);
+
+		if ($exprType instanceof UnionType) {
+			$allTypesContainFlag = true;
+			$someTypesContainFlag = false;
+			foreach ($exprType->getTypes() as $type) {
+				$containsFlag = $this->typeContainsIntFlag($type, $flag);
+				if (!$containsFlag->yes()) {
+					$allTypesContainFlag = false;
+				}
+
+				if (!$containsFlag->yes() && !$containsFlag->maybe()) {
+					continue;
+				}
+
+				$someTypesContainFlag = true;
+			}
+
+			if ($allTypesContainFlag) {
+				return TrinaryLogic::createYes();
+			}
+			if ($someTypesContainFlag) {
+				return TrinaryLogic::createMaybe();
+			}
+			return TrinaryLogic::createNo();
+		}
+
+		return $this->typeContainsIntFlag($exprType, $flag);
+	}
+
+	private function typeContainsIntFlag(Type $type, int $flag): TrinaryLogic
+	{
+		if ($type instanceof ConstantIntegerType) {
+			if (($type->getValue() & $flag) === $flag) {
+				return TrinaryLogic::createYes();
+			}
+			return TrinaryLogic::createNo();
+		}
+
+		if ($type->isInteger()->yes() || $type instanceof MixedType) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createNo();
+	}
+
+}
diff --git a/src/Type/BooleanType.php b/src/Type/BooleanType.php
new file mode 100644
index 00000000..51d61529
--- /dev/null
+++ b/src/Type/BooleanType.php
@@ -0,0 +1,194 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+
+/** @api */
+class BooleanType implements Type
+{
+
+	use JustNullableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGenericTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [new ConstantBooleanType(true), new ConstantBooleanType(false)];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [true, false];
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'bool';
+	}
+
+	public function toNumber(): Type
+	{
+		return $this->toInteger();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toString(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantStringType(''),
+			new ConstantStringType('1'),
+		);
+	}
+
+	public function toInteger(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantIntegerType(0),
+			new ConstantIntegerType(1),
+		);
+	}
+
+	public function toFloat(): Type
+	{
+		return TypeCombinator::union(
+			new ConstantFloatType(0.0),
+			new ConstantFloatType(1.0),
+		);
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new UnionType([new ConstantIntegerType(0), new ConstantIntegerType(1)]);
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ConstantBooleanType) {
+			return new ConstantBooleanType(!$typeToRemove->getValue());
+		}
+
+		return null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [
+			new ConstantBooleanType(true),
+			new ConstantBooleanType(false),
+		];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return ExponentiateHelper::exponentiate($this, $exponent);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('bool');
+	}
+
+	public function toTrinaryLogic(): TrinaryLogic
+	{
+		if ($this->isTrue()->yes()) {
+			return TrinaryLogic::createYes();
+		}
+		if ($this->isFalse()->yes()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+}
diff --git a/src/Type/CallableType.php b/src/Type/CallableType.php
new file mode 100644
index 00000000..886a422d
--- /dev/null
+++ b/src/Type/CallableType.php
@@ -0,0 +1,682 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use Closure;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeParameterNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\PhpDocParser\Printer\Printer;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Reflection\Php\DummyParameter;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Traits\MaybeArrayTypeTrait;
+use PHPStan\Type\Traits\MaybeIterableTypeTrait;
+use PHPStan\Type\Traits\MaybeObjectTypeTrait;
+use PHPStan\Type\Traits\MaybeOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use function array_map;
+use function array_merge;
+use function count;
+
+/** @api */
+class CallableType implements CompoundType, CallableParametersAcceptor
+{
+
+	use MaybeArrayTypeTrait;
+	use MaybeIterableTypeTrait;
+	use MaybeObjectTypeTrait;
+	use MaybeOffsetAccessibleTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @var list<ParameterReflection> */
+	private array $parameters;
+
+	private Type $returnType;
+
+	private bool $isCommonCallable;
+
+	private TemplateTypeMap $templateTypeMap;
+
+	private TemplateTypeMap $resolvedTemplateTypeMap;
+
+	private TrinaryLogic $isPure;
+
+	/**
+	 * @api
+	 * @param list<ParameterReflection>|null $parameters
+	 * @param array<non-empty-string, TemplateTag> $templateTags
+	 */
+	public function __construct(
+		?array $parameters = null,
+		?Type $returnType = null,
+		private bool $variadic = true,
+		?TemplateTypeMap $templateTypeMap = null,
+		?TemplateTypeMap $resolvedTemplateTypeMap = null,
+		private array $templateTags = [],
+		?TrinaryLogic $isPure = null,
+	)
+	{
+		$this->parameters = $parameters ?? [];
+		$this->returnType = $returnType ?? new MixedType();
+		$this->isCommonCallable = $parameters === null && $returnType === null;
+		$this->templateTypeMap = $templateTypeMap ?? TemplateTypeMap::createEmpty();
+		$this->resolvedTemplateTypeMap = $resolvedTemplateTypeMap ?? TemplateTypeMap::createEmpty();
+		$this->isPure = $isPure ?? TrinaryLogic::createMaybe();
+	}
+
+	/**
+	 * @return array<non-empty-string, TemplateTag>
+	 */
+	public function getTemplateTags(): array
+	{
+		return $this->templateTags;
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		return $this->isPure;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = [];
+		foreach ($this->parameters as $parameter) {
+			$classes = array_merge($classes, $parameter->getType()->getReferencedClasses());
+		}
+
+		return array_merge($classes, $this->returnType->getReferencedClasses());
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType && !$type instanceof self) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return $this->isSuperTypeOfInternal($type, true)->toAcceptsResult();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType && !$type instanceof self) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return $this->isSuperTypeOfInternal($type, false);
+	}
+
+	private function isSuperTypeOfInternal(Type $type, bool $treatMixedAsAny): IsSuperTypeOfResult
+	{
+		$isCallable = new IsSuperTypeOfResult($type->isCallable(), []);
+		if ($isCallable->no()) {
+			return $isCallable;
+		}
+
+		static $scope;
+		if ($scope === null) {
+			$scope = new OutOfClassScope();
+		}
+
+		if ($this->isCommonCallable) {
+			if ($this->isPure()->yes()) {
+				$typePure = TrinaryLogic::createYes();
+				foreach ($type->getCallableParametersAcceptors($scope) as $variant) {
+					$typePure = $typePure->and($variant->isPure());
+				}
+
+				return $isCallable->and(new IsSuperTypeOfResult($typePure, []));
+			}
+
+			return $isCallable;
+		}
+
+		$variantsResult = null;
+		foreach ($type->getCallableParametersAcceptors($scope) as $variant) {
+			$isSuperType = CallableTypeHelper::isParametersAcceptorSuperTypeOf($this, $variant, $treatMixedAsAny);
+			if ($variantsResult === null) {
+				$variantsResult = $isSuperType;
+			} else {
+				$variantsResult = $variantsResult->or($isSuperType);
+			}
+		}
+
+		if ($variantsResult === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $isCallable->and($variantsResult);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof IntersectionType || $otherType instanceof UnionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($otherType->isCallable(), []))
+			->and($otherType instanceof self ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		return $this->describe(VerbosityLevel::precise()) === $type->describe(VerbosityLevel::precise());
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'callable',
+			function (): string {
+				$printer = new Printer();
+				$selfWithoutParameterNames = new self(
+					array_map(static fn (ParameterReflection $p): ParameterReflection => new DummyParameter(
+						'',
+						$p->getType(),
+						$p->isOptional() && !$p->isVariadic(),
+						PassedByReference::createNo(),
+						$p->isVariadic(),
+						$p->getDefaultValue(),
+					), $this->parameters),
+					$this->returnType,
+					$this->variadic,
+					$this->templateTypeMap,
+					$this->resolvedTemplateTypeMap,
+					$this->templateTags,
+					$this->isPure,
+				);
+
+				return $printer->print($selfWithoutParameterNames->toPhpDocNode());
+			},
+		);
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [$this];
+	}
+
+	public function getThrowPoints(): array
+	{
+		return [
+			SimpleThrowPoint::createImplicit(),
+		];
+	}
+
+	public function getImpurePoints(): array
+	{
+		$pure = $this->isPure();
+		if ($pure->yes()) {
+			return [];
+		}
+
+		return [
+			new SimpleImpurePoint(
+				'functionCall',
+				'call to a callable',
+				$pure->no(),
+			),
+		];
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return [];
+	}
+
+	public function getUsedVariables(): array
+	{
+		return [];
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ArrayType(new MixedType(), new MixedType());
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return TypeCombinator::union($this, new StringType(), new ArrayType(new MixedType(true), new MixedType(true)), new ObjectType(Closure::class));
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->resolvedTemplateTypeMap;
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return TemplateTypeVarianceMap::createEmpty();
+	}
+
+	/**
+	 * @return list<ParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		return $this->parameters;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->returnType;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if (! $receivedType->isCallable()->yes()) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$parametersAcceptors = $receivedType->getCallableParametersAcceptors(new OutOfClassScope());
+
+		$typeMap = TemplateTypeMap::createEmpty();
+
+		foreach ($parametersAcceptors as $parametersAcceptor) {
+			$typeMap = $typeMap->union($this->inferTemplateTypesOnParametersAcceptor($parametersAcceptor));
+		}
+
+		return $typeMap;
+	}
+
+	private function inferTemplateTypesOnParametersAcceptor(ParametersAcceptor $parametersAcceptor): TemplateTypeMap
+	{
+		$typeMap = TemplateTypeMap::createEmpty();
+		$args = $parametersAcceptor->getParameters();
+		$returnType = $parametersAcceptor->getReturnType();
+
+		foreach ($this->getParameters() as $i => $param) {
+			$paramType = $param->getType();
+			if (isset($args[$i])) {
+				$argType = $args[$i]->getType();
+			} elseif ($paramType instanceof TemplateType) {
+				$argType = TemplateTypeHelper::resolveToBounds($paramType);
+			} else {
+				$argType = new NeverType();
+			}
+
+			$typeMap = $typeMap->union($paramType->inferTemplateTypes($argType)->convertToLowerBoundTypes());
+		}
+
+		return $typeMap->union($this->getReturnType()->inferTemplateTypes($returnType));
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$references = $this->getReturnType()->getReferencedTemplateTypes(
+			$positionVariance->compose(TemplateTypeVariance::createCovariant()),
+		);
+
+		$paramVariance = $positionVariance->compose(TemplateTypeVariance::createContravariant());
+
+		foreach ($this->getParameters() as $param) {
+			foreach ($param->getType()->getReferencedTemplateTypes($paramVariance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		if ($this->isCommonCallable) {
+			return $this;
+		}
+
+		$parameters = array_map(static function (ParameterReflection $param) use ($cb): NativeParameterReflection {
+			$defaultValue = $param->getDefaultValue();
+			return new NativeParameterReflection(
+				$param->getName(),
+				$param->isOptional(),
+				$cb($param->getType()),
+				$param->passedByReference(),
+				$param->isVariadic(),
+				$defaultValue !== null ? $cb($defaultValue) : null,
+			);
+		}, $this->getParameters());
+
+		return new self(
+			$parameters,
+			$cb($this->getReturnType()),
+			$this->isVariadic(),
+			$this->templateTypeMap,
+			$this->resolvedTemplateTypeMap,
+			$this->templateTags,
+			$this->isPure,
+		);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->isCommonCallable) {
+			return $this;
+		}
+
+		if (!$right->isCallable()->yes()) {
+			return $this;
+		}
+
+		$rightAcceptors = $right->getCallableParametersAcceptors(new OutOfClassScope());
+		if (count($rightAcceptors) !== 1) {
+			return $this;
+		}
+
+		$rightParameters = $rightAcceptors[0]->getParameters();
+		if (count($this->getParameters()) !== count($rightParameters)) {
+			return $this;
+		}
+
+		$parameters = [];
+		foreach ($this->getParameters() as $i => $leftParam) {
+			$rightParam = $rightParameters[$i];
+			$leftDefaultValue = $leftParam->getDefaultValue();
+			$rightDefaultValue = $rightParam->getDefaultValue();
+			$defaultValue = $leftDefaultValue;
+			if ($leftDefaultValue !== null && $rightDefaultValue !== null) {
+				$defaultValue = $cb($leftDefaultValue, $rightDefaultValue);
+			}
+			$parameters[] = new NativeParameterReflection(
+				$leftParam->getName(),
+				$leftParam->isOptional(),
+				$cb($leftParam->getType(), $rightParam->getType()),
+				$leftParam->passedByReference(),
+				$leftParam->isVariadic(),
+				$defaultValue,
+			);
+		}
+
+		return new self(
+			$parameters,
+			$cb($this->getReturnType(), $rightAcceptors[0]->getReturnType()),
+			$this->isVariadic(),
+			$this->templateTypeMap,
+			$this->resolvedTemplateTypeMap,
+			$this->templateTags,
+			$this->isPure,
+		);
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function isCommonCallable(): bool
+	{
+		return $this->isCommonCallable;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		if ($this->isCommonCallable) {
+			return new IdentifierTypeNode($this->isPure()->yes() ? 'pure-callable' : 'callable');
+		}
+
+		$parameters = [];
+		foreach ($this->parameters as $parameter) {
+			$parameters[] = new CallableTypeParameterNode(
+				$parameter->getType()->toPhpDocNode(),
+				!$parameter->passedByReference()->no(),
+				$parameter->isVariadic(),
+				$parameter->getName() === '' ? '' : '$' . $parameter->getName(),
+				$parameter->isOptional(),
+			);
+		}
+
+		$templateTags = [];
+		foreach ($this->templateTags as $templateName => $templateTag) {
+			$templateTags[] = new TemplateTagValueNode(
+				$templateName,
+				$templateTag->getBound()->toPhpDocNode(),
+				'',
+			);
+		}
+
+		return new CallableTypeNode(
+			new IdentifierTypeNode($this->isPure->yes() ? 'pure-callable' : 'callable'),
+			$parameters,
+			$this->returnType->toPhpDocNode(),
+			$templateTags,
+		);
+	}
+
+}
diff --git a/src/Type/CallableTypeHelper.php b/src/Type/CallableTypeHelper.php
new file mode 100644
index 00000000..1011e504
--- /dev/null
+++ b/src/Type/CallableTypeHelper.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\TrinaryLogic;
+use function array_key_exists;
+use function array_merge;
+use function count;
+use function sprintf;
+
+final class CallableTypeHelper
+{
+
+	public static function isParametersAcceptorSuperTypeOf(
+		CallableParametersAcceptor $ours,
+		CallableParametersAcceptor $theirs,
+		bool $treatMixedAsAny,
+	): IsSuperTypeOfResult
+	{
+		$theirParameters = $theirs->getParameters();
+		$ourParameters = $ours->getParameters();
+
+		$lastParameter = null;
+		foreach ($theirParameters as $theirParameter) {
+			$lastParameter = $theirParameter;
+		}
+		$theirParameterCount = count($theirParameters);
+		$ourParameterCount = count($ourParameters);
+		if (
+			$lastParameter !== null
+			&& $lastParameter->isVariadic()
+			&& $theirParameterCount < $ourParameterCount
+		) {
+			foreach ($ourParameters as $i => $ourParameter) {
+				if (array_key_exists($i, $theirParameters)) {
+					continue;
+				}
+				$theirParameters[] = $lastParameter;
+			}
+		}
+
+		$result = IsSuperTypeOfResult::createYes();
+		foreach ($theirParameters as $i => $theirParameter) {
+			$parameterDescription = $theirParameter->getName() === '' ? sprintf('#%d', $i + 1) : sprintf('#%d $%s', $i + 1, $theirParameter->getName());
+			if (!isset($ourParameters[$i])) {
+				if ($theirParameter->isOptional()) {
+					continue;
+				}
+
+				$accepts = new IsSuperTypeOfResult(TrinaryLogic::createNo(), [
+					sprintf(
+						'Parameter %s of passed callable is required but accepting callable does not have that parameter. It will be called without it.',
+						$parameterDescription,
+					),
+				]);
+				$result = $result->and($accepts);
+				continue;
+			}
+
+			$ourParameter = $ourParameters[$i];
+			$ourParameterType = $ourParameter->getType();
+
+			if ($ourParameter->isOptional() && !$theirParameter->isOptional()) {
+				$accepts = new IsSuperTypeOfResult(TrinaryLogic::createNo(), [
+					sprintf(
+						'Parameter %s of passed callable is required but the parameter of accepting callable is optional. It might be called without it.',
+						$parameterDescription,
+					),
+				]);
+				$result = $result->and($accepts);
+			}
+
+			if ($treatMixedAsAny) {
+				$isSuperType = $theirParameter->getType()->accepts($ourParameterType, true);
+				$isSuperType = new IsSuperTypeOfResult($isSuperType->result, $isSuperType->reasons);
+			} else {
+				$isSuperType = $theirParameter->getType()->isSuperTypeOf($ourParameterType);
+			}
+
+			if ($isSuperType->maybe()) {
+				$verbosity = VerbosityLevel::getRecommendedLevelByType($theirParameter->getType(), $ourParameterType);
+				$isSuperType = new IsSuperTypeOfResult($isSuperType->result, array_merge($isSuperType->reasons, [
+					sprintf(
+						'Type %s of parameter %s of passed callable needs to be same or wider than parameter type %s of accepting callable.',
+						$theirParameter->getType()->describe($verbosity),
+						$parameterDescription,
+						$ourParameterType->describe($verbosity),
+					),
+				]));
+			}
+
+			$result = $result->and($isSuperType);
+		}
+
+		if (!$treatMixedAsAny && $theirParameterCount < $ourParameterCount) {
+			$result = $result->and(IsSuperTypeOfResult::createMaybe());
+		}
+
+		$theirReturnType = $theirs->getReturnType();
+		if ($treatMixedAsAny) {
+			$isReturnTypeSuperType = $ours->getReturnType()->accepts($theirReturnType, true);
+			$isReturnTypeSuperType = new IsSuperTypeOfResult($isReturnTypeSuperType->result, $isReturnTypeSuperType->reasons);
+		} else {
+			$isReturnTypeSuperType = $ours->getReturnType()->isSuperTypeOf($theirReturnType);
+		}
+
+		$pure = $ours->isPure();
+		if ($pure->yes()) {
+			$result = $result->and(new IsSuperTypeOfResult($theirs->isPure(), []));
+		} elseif ($pure->no()) {
+			$result = $result->and(new IsSuperTypeOfResult($theirs->isPure()->negate(), []));
+		}
+
+		return $result->and($isReturnTypeSuperType);
+	}
+
+}
diff --git a/src/Type/CircularTypeAliasDefinitionException.php b/src/Type/CircularTypeAliasDefinitionException.php
new file mode 100644
index 00000000..e0a6ebcb
--- /dev/null
+++ b/src/Type/CircularTypeAliasDefinitionException.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use Exception;
+
+final class CircularTypeAliasDefinitionException extends Exception
+{
+
+}
diff --git a/src/Type/CircularTypeAliasErrorType.php b/src/Type/CircularTypeAliasErrorType.php
new file mode 100644
index 00000000..4b43e2c0
--- /dev/null
+++ b/src/Type/CircularTypeAliasErrorType.php
@@ -0,0 +1,10 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/** @api */
+class CircularTypeAliasErrorType extends ErrorType
+{
+
+}
diff --git a/src/Type/ClassStringType.php b/src/Type/ClassStringType.php
new file mode 100644
index 00000000..c6b6afec
--- /dev/null
+++ b/src/Type/ClassStringType.php
@@ -0,0 +1,98 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+
+/** @api */
+class ClassStringType extends StringType
+{
+
+	/** @api */
+	public function __construct()
+	{
+		parent::__construct();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'class-string';
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isClassString(), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return new IsSuperTypeOfResult($type->isClassString(), []);
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('class-string');
+	}
+
+}
diff --git a/src/Type/ClosureType.php b/src/Type/ClosureType.php
new file mode 100644
index 00000000..cad98f44
--- /dev/null
+++ b/src/Type/ClosureType.php
@@ -0,0 +1,805 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use Closure;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Node\InvalidateExprNode;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDocParser\Ast\PhpDoc\TemplateTagValueNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\CallableTypeParameterNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\PhpDocParser\Printer\Printer;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\SimpleImpurePoint;
+use PHPStan\Reflection\Callables\SimpleThrowPoint;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\Reflection\Php\ClosureCallUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Php\DummyParameter;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function array_map;
+use function array_merge;
+use function count;
+
+/** @api */
+class ClosureType implements TypeWithClassName, CallableParametersAcceptor
+{
+
+	use NonArrayTypeTrait;
+	use NonIterableTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @var list<ParameterReflection> */
+	private array $parameters;
+
+	private Type $returnType;
+
+	private bool $isCommonCallable;
+
+	private ObjectType $objectType;
+
+	private TemplateTypeMap $templateTypeMap;
+
+	private TemplateTypeMap $resolvedTemplateTypeMap;
+
+	private TemplateTypeVarianceMap $callSiteVarianceMap;
+
+	/** @var SimpleImpurePoint[] */
+	private array $impurePoints;
+
+	private TrinaryLogic $acceptsNamedArguments;
+
+	/**
+	 * @api
+	 * @param list<ParameterReflection>|null $parameters
+	 * @param array<non-empty-string, TemplateTag> $templateTags
+	 * @param SimpleThrowPoint[] $throwPoints
+	 * @param ?SimpleImpurePoint[] $impurePoints
+	 * @param InvalidateExprNode[] $invalidateExpressions
+	 * @param string[] $usedVariables
+	 */
+	public function __construct(
+		?array $parameters = null,
+		?Type $returnType = null,
+		private bool $variadic = true,
+		?TemplateTypeMap $templateTypeMap = null,
+		?TemplateTypeMap $resolvedTemplateTypeMap = null,
+		?TemplateTypeVarianceMap $callSiteVarianceMap = null,
+		private array $templateTags = [],
+		private array $throwPoints = [],
+		?array $impurePoints = null,
+		private array $invalidateExpressions = [],
+		private array $usedVariables = [],
+		?TrinaryLogic $acceptsNamedArguments = null,
+	)
+	{
+		if ($acceptsNamedArguments === null) {
+			$acceptsNamedArguments = TrinaryLogic::createYes();
+		}
+		$this->acceptsNamedArguments = $acceptsNamedArguments;
+
+		$this->parameters = $parameters ?? [];
+		$this->returnType = $returnType ?? new MixedType();
+		$this->isCommonCallable = $parameters === null && $returnType === null;
+		$this->objectType = new ObjectType(Closure::class);
+		$this->templateTypeMap = $templateTypeMap ?? TemplateTypeMap::createEmpty();
+		$this->resolvedTemplateTypeMap = $resolvedTemplateTypeMap ?? TemplateTypeMap::createEmpty();
+		$this->callSiteVarianceMap = $callSiteVarianceMap ?? TemplateTypeVarianceMap::createEmpty();
+		$this->impurePoints = $impurePoints ?? [new SimpleImpurePoint('functionCall', 'call to an unknown Closure', false)];
+	}
+
+	/**
+	 * @return array<non-empty-string, TemplateTag>
+	 */
+	public function getTemplateTags(): array
+	{
+		return $this->templateTags;
+	}
+
+	public static function createPure(): self
+	{
+		return new self(null, null, true, null, null, null, [], [], []);
+	}
+
+	public function isPure(): TrinaryLogic
+	{
+		$impurePoints = $this->getImpurePoints();
+		if (count($impurePoints) === 0) {
+			return TrinaryLogic::createYes();
+		}
+
+		$certainCount = 0;
+		foreach ($impurePoints as $impurePoint) {
+			if (!$impurePoint->isCertain()) {
+				continue;
+			}
+
+			$certainCount++;
+		}
+
+		return $certainCount > 0 ? TrinaryLogic::createNo() : TrinaryLogic::createMaybe();
+	}
+
+	public function getClassName(): string
+	{
+		return $this->objectType->getClassName();
+	}
+
+	public function getClassReflection(): ?ClassReflection
+	{
+		return $this->objectType->getClassReflection();
+	}
+
+	public function getAncestorWithClassName(string $className): ?TypeWithClassName
+	{
+		return $this->objectType->getAncestorWithClassName($className);
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = $this->objectType->getReferencedClasses();
+		foreach ($this->parameters as $parameter) {
+			$classes = array_merge($classes, $parameter->getType()->getReferencedClasses());
+		}
+
+		return array_merge($classes, $this->returnType->getReferencedClasses());
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return $this->objectType->getObjectClassNames();
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return $this->objectType->getObjectClassReflections();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if (!$type instanceof ClosureType) {
+			return $this->objectType->accepts($type, $strictTypes);
+		}
+
+		return $this->isSuperTypeOfInternal($type, true)->toAcceptsResult();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return $this->isSuperTypeOfInternal($type, false);
+	}
+
+	private function isSuperTypeOfInternal(Type $type, bool $treatMixedAsAny): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return CallableTypeHelper::isParametersAcceptorSuperTypeOf(
+				$this,
+				$type,
+				$treatMixedAsAny,
+			);
+		}
+
+		if ($type->getObjectClassNames() === [Closure::class]) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		return $this->objectType->isSuperTypeOf($type);
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		return $this->describe(VerbosityLevel::precise()) === $type->describe(VerbosityLevel::precise());
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'Closure',
+			function (): string {
+				if ($this->isCommonCallable) {
+					return $this->isPure()->yes() ? 'pure-Closure' : 'Closure';
+				}
+
+				$printer = new Printer();
+				$selfWithoutParameterNames = new self(
+					array_map(static fn (ParameterReflection $p): ParameterReflection => new DummyParameter(
+						'',
+						$p->getType(),
+						$p->isOptional() && !$p->isVariadic(),
+						PassedByReference::createNo(),
+						$p->isVariadic(),
+						$p->getDefaultValue(),
+					), $this->parameters),
+					$this->returnType,
+					$this->variadic,
+					$this->templateTypeMap,
+					$this->resolvedTemplateTypeMap,
+					$this->callSiteVarianceMap,
+					$this->templateTags,
+					$this->throwPoints,
+					$this->impurePoints,
+					$this->invalidateExpressions,
+					$this->usedVariables,
+				);
+
+				return $printer->print($selfWithoutParameterNames->toPhpDocNode());
+			},
+		);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return $this->objectType->isObject();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return $this->objectType->isEnum();
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return $this->objectType->getTemplateType($ancestorClassName, $templateTypeName);
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return $this->objectType->canAccessProperties();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return $this->objectType->hasProperty($propertyName);
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->objectType->getProperty($propertyName, $scope);
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		return $this->objectType->getUnresolvedPropertyPrototype($propertyName, $scope);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return $this->objectType->canCallMethods();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return $this->objectType->hasMethod($methodName);
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		if ($methodName === 'call') {
+			return new ClosureCallUnresolvedMethodPrototypeReflection(
+				$this->objectType->getUnresolvedMethodPrototype($methodName, $scope),
+				$this,
+			);
+		}
+
+		return $this->objectType->getUnresolvedMethodPrototype($methodName, $scope);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->objectType->canAccessConstants();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->objectType->hasConstant($constantName);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return $this->objectType->getConstant($constantName);
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function isCommonCallable(): bool
+	{
+		return $this->isCommonCallable;
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [$this];
+	}
+
+	public function getThrowPoints(): array
+	{
+		return $this->throwPoints;
+	}
+
+	public function getImpurePoints(): array
+	{
+		return $this->impurePoints;
+	}
+
+	public function getInvalidateExpressions(): array
+	{
+		return $this->invalidateExpressions;
+	}
+
+	public function getUsedVariables(): array
+	{
+		return $this->usedVariables;
+	}
+
+	public function acceptsNamedArguments(): TrinaryLogic
+	{
+		return $this->acceptsNamedArguments;
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return new ConstantBooleanType(true);
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return TypeCombinator::union($this, new CallableType());
+	}
+
+	public function getTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->templateTypeMap;
+	}
+
+	public function getResolvedTemplateTypeMap(): TemplateTypeMap
+	{
+		return $this->resolvedTemplateTypeMap;
+	}
+
+	public function getCallSiteVarianceMap(): TemplateTypeVarianceMap
+	{
+		return $this->callSiteVarianceMap;
+	}
+
+	/**
+	 * @return list<ParameterReflection>
+	 */
+	public function getParameters(): array
+	{
+		return $this->parameters;
+	}
+
+	public function isVariadic(): bool
+	{
+		return $this->variadic;
+	}
+
+	public function getReturnType(): Type
+	{
+		return $this->returnType;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if ($receivedType->isCallable()->no() || ! $receivedType instanceof self) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$parametersAcceptors = $receivedType->getCallableParametersAcceptors(new OutOfClassScope());
+
+		$typeMap = TemplateTypeMap::createEmpty();
+
+		foreach ($parametersAcceptors as $parametersAcceptor) {
+			$typeMap = $typeMap->union($this->inferTemplateTypesOnParametersAcceptor($parametersAcceptor));
+		}
+
+		return $typeMap;
+	}
+
+	private function inferTemplateTypesOnParametersAcceptor(ParametersAcceptor $parametersAcceptor): TemplateTypeMap
+	{
+		$typeMap = TemplateTypeMap::createEmpty();
+		$args = $parametersAcceptor->getParameters();
+		$returnType = $parametersAcceptor->getReturnType();
+
+		foreach ($this->getParameters() as $i => $param) {
+			$paramType = $param->getType();
+			if (isset($args[$i])) {
+				$argType = $args[$i]->getType();
+			} elseif ($paramType instanceof TemplateType) {
+				$argType = TemplateTypeHelper::resolveToBounds($paramType);
+			} else {
+				$argType = new NeverType();
+			}
+
+			$typeMap = $typeMap->union($paramType->inferTemplateTypes($argType)->convertToLowerBoundTypes());
+		}
+
+		return $typeMap->union($this->getReturnType()->inferTemplateTypes($returnType));
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$references = $this->getReturnType()->getReferencedTemplateTypes(
+			$positionVariance->compose(TemplateTypeVariance::createCovariant()),
+		);
+
+		$paramVariance = $positionVariance->compose(TemplateTypeVariance::createContravariant());
+
+		foreach ($this->getParameters() as $param) {
+			foreach ($param->getType()->getReferencedTemplateTypes($paramVariance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		if ($this->isCommonCallable) {
+			return $this;
+		}
+
+		return new self(
+			array_map(static function (ParameterReflection $param) use ($cb): NativeParameterReflection {
+				$defaultValue = $param->getDefaultValue();
+				return new NativeParameterReflection(
+					$param->getName(),
+					$param->isOptional(),
+					$cb($param->getType()),
+					$param->passedByReference(),
+					$param->isVariadic(),
+					$defaultValue !== null ? $cb($defaultValue) : null,
+				);
+			}, $this->getParameters()),
+			$cb($this->getReturnType()),
+			$this->isVariadic(),
+			$this->templateTypeMap,
+			$this->resolvedTemplateTypeMap,
+			$this->callSiteVarianceMap,
+			$this->templateTags,
+			$this->throwPoints,
+			$this->impurePoints,
+			$this->invalidateExpressions,
+			$this->usedVariables,
+			$this->acceptsNamedArguments,
+		);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->isCommonCallable) {
+			return $this;
+		}
+
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$rightParameters = $right->getParameters();
+		if (count($this->getParameters()) !== count($rightParameters)) {
+			return $this;
+		}
+
+		$parameters = [];
+		foreach ($this->getParameters() as $i => $leftParam) {
+			$rightParam = $rightParameters[$i];
+			$leftDefaultValue = $leftParam->getDefaultValue();
+			$rightDefaultValue = $rightParam->getDefaultValue();
+			$defaultValue = $leftDefaultValue;
+			if ($leftDefaultValue !== null && $rightDefaultValue !== null) {
+				$defaultValue = $cb($leftDefaultValue, $rightDefaultValue);
+			}
+			$parameters[] = new NativeParameterReflection(
+				$leftParam->getName(),
+				$leftParam->isOptional(),
+				$cb($leftParam->getType(), $rightParam->getType()),
+				$leftParam->passedByReference(),
+				$leftParam->isVariadic(),
+				$defaultValue,
+			);
+		}
+
+		return new self(
+			$parameters,
+			$cb($this->getReturnType(), $right->getReturnType()),
+			$this->isVariadic(),
+			$this->templateTypeMap,
+			$this->resolvedTemplateTypeMap,
+			$this->callSiteVarianceMap,
+			$this->templateTags,
+			$this->throwPoints,
+			$this->impurePoints,
+			$this->invalidateExpressions,
+			$this->usedVariables,
+			$this->acceptsNamedArguments,
+		);
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this;
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		if ($this->isCommonCallable) {
+			return new IdentifierTypeNode($this->isPure()->yes() ? 'pure-Closure' : 'Closure');
+		}
+
+		$parameters = [];
+		foreach ($this->parameters as $parameter) {
+			$parameters[] = new CallableTypeParameterNode(
+				$parameter->getType()->toPhpDocNode(),
+				!$parameter->passedByReference()->no(),
+				$parameter->isVariadic(),
+				$parameter->getName() === '' ? '' : '$' . $parameter->getName(),
+				$parameter->isOptional(),
+			);
+		}
+
+		$templateTags = [];
+		foreach ($this->templateTags as $templateName => $templateTag) {
+			$templateTags[] = new TemplateTagValueNode(
+				$templateName,
+				$templateTag->getBound()->toPhpDocNode(),
+				'',
+			);
+		}
+
+		return new CallableTypeNode(
+			new IdentifierTypeNode('Closure'),
+			$parameters,
+			$this->returnType->toPhpDocNode(),
+			$templateTags,
+		);
+	}
+
+}
diff --git a/src/Type/ClosureTypeFactory.php b/src/Type/ClosureTypeFactory.php
new file mode 100644
index 00000000..e48ced17
--- /dev/null
+++ b/src/Type/ClosureTypeFactory.php
@@ -0,0 +1,120 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use Closure;
+use PhpParser\Parser;
+use PHPStan\BetterReflection\Identifier\IdentifierType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionType;
+use PHPStan\BetterReflection\Reflection\ReflectionParameter as BetterReflectionParameter;
+use PHPStan\BetterReflection\Reflector\Reflector;
+use PHPStan\BetterReflection\SourceLocator\Ast\FindReflectionsInTree;
+use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
+use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
+use PHPStan\BetterReflection\SourceLocator\SourceStubber\ReflectionSourceStubber;
+use PHPStan\Reflection\InitializerExprContext;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\PassedByReference;
+use PHPStan\ShouldNotHappenException;
+use ReflectionFunction;
+use function array_map;
+use function count;
+use function str_replace;
+
+/**
+ * @api
+ */
+final class ClosureTypeFactory
+{
+
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+		private ReflectionSourceStubber $reflectionSourceStubber,
+		private Reflector $reflector,
+		private Parser $parser,
+	)
+	{
+	}
+
+	/**
+	 * @param Closure(): mixed $closure
+	 */
+	public function fromClosureObject(Closure $closure): ClosureType
+	{
+		$stubData = $this->reflectionSourceStubber->generateFunctionStubFromReflection(new ReflectionFunction($closure));
+		if ($stubData === null) {
+			throw new ShouldNotHappenException('Closure reflection not found.');
+		}
+		$source = $stubData->getStub();
+		$source = str_replace('{closure}', 'foo', $source);
+		$locatedSource = new LocatedSource($source, '{closure}', $stubData->getFileName());
+		$find = new FindReflectionsInTree(new NodeToReflection());
+		$ast = $this->parser->parse($locatedSource->getSource());
+		if ($ast === null) {
+			throw new ShouldNotHappenException('Closure reflection not found.');
+		}
+
+		/** @var list<\PHPStan\BetterReflection\Reflection\ReflectionFunction> $reflections */
+		$reflections = $find($this->reflector, $ast, new IdentifierType(IdentifierType::IDENTIFIER_FUNCTION), $locatedSource);
+		if (count($reflections) !== 1) {
+			throw new ShouldNotHappenException('Closure reflection not found.');
+		}
+
+		$betterReflectionFunction = $reflections[0];
+
+		$parameters = array_map(fn (BetterReflectionParameter $parameter) => new class($parameter, $this->initializerExprTypeResolver) implements ParameterReflection {
+
+				public function __construct(private BetterReflectionParameter $reflection, private InitializerExprTypeResolver $initializerExprTypeResolver)
+				{
+				}
+
+				public function getName(): string
+				{
+					return $this->reflection->getName();
+				}
+
+				public function isOptional(): bool
+				{
+					return $this->reflection->isOptional();
+				}
+
+				public function getType(): Type
+				{
+					return TypehintHelper::decideTypeFromReflection(ReflectionType::fromTypeOrNull($this->reflection->getType()), null, null, $this->reflection->isVariadic());
+				}
+
+				public function passedByReference(): PassedByReference
+				{
+					return $this->reflection->isPassedByReference()
+						? PassedByReference::createCreatesNewVariable()
+						: PassedByReference::createNo();
+				}
+
+				public function isVariadic(): bool
+				{
+					return $this->reflection->isVariadic();
+				}
+
+				public function getDefaultValue(): ?Type
+				{
+					if (! $this->reflection->isDefaultValueAvailable()) {
+						return null;
+					}
+
+					$defaultExpr = $this->reflection->getDefaultValueExpression();
+					if ($defaultExpr === null) {
+						return null;
+					}
+
+					return $this->initializerExprTypeResolver->getType($defaultExpr, InitializerExprContext::fromReflectionParameter(new ReflectionParameter($this->reflection)));
+				}
+
+		}, $betterReflectionFunction->getParameters());
+
+		return new ClosureType($parameters, TypehintHelper::decideTypeFromReflection(ReflectionType::fromTypeOrNull($betterReflectionFunction->getReturnType())), $betterReflectionFunction->isVariadic());
+	}
+
+}
diff --git a/src/Type/CompoundType.php b/src/Type/CompoundType.php
new file mode 100644
index 00000000..a71964ba
--- /dev/null
+++ b/src/Type/CompoundType.php
@@ -0,0 +1,21 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\TrinaryLogic;
+
+/** @api */
+interface CompoundType extends Type
+{
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult;
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult;
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic;
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic;
+
+}
diff --git a/src/Type/ConditionalType.php b/src/Type/ConditionalType.php
new file mode 100644
index 00000000..136dba1b
--- /dev/null
+++ b/src/Type/ConditionalType.php
@@ -0,0 +1,221 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\ConditionalTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function array_merge;
+use function sprintf;
+
+/** @api */
+final class ConditionalType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private ?Type $normalizedIf = null;
+
+	private ?Type $normalizedElse = null;
+
+	private ?Type $subjectWithTargetIntersectedType = null;
+
+	private ?Type $subjectWithTargetRemovedType = null;
+
+	public function __construct(
+		private Type $subject,
+		private Type $target,
+		private Type $if,
+		private Type $else,
+		private bool $negated,
+	)
+	{
+	}
+
+	public function getSubject(): Type
+	{
+		return $this->subject;
+	}
+
+	public function getTarget(): Type
+	{
+		return $this->target;
+	}
+
+	public function getIf(): Type
+	{
+		return $this->if;
+	}
+
+	public function getElse(): Type
+	{
+		return $this->else;
+	}
+
+	public function isNegated(): bool
+	{
+		return $this->negated;
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return $this->if->isSuperTypeOf($type->if)
+				->and($this->else->isSuperTypeOf($type->else));
+		}
+
+		return $this->isSuperTypeOfDefault($type);
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return array_merge(
+			$this->subject->getReferencedClasses(),
+			$this->target->getReferencedClasses(),
+			$this->if->getReferencedClasses(),
+			$this->else->getReferencedClasses(),
+		);
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return array_merge(
+			$this->subject->getReferencedTemplateTypes($positionVariance),
+			$this->target->getReferencedTemplateTypes($positionVariance),
+			$this->if->getReferencedTemplateTypes($positionVariance),
+			$this->else->getReferencedTemplateTypes($positionVariance),
+		);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->subject->equals($type->subject)
+			&& $this->target->equals($type->target)
+			&& $this->if->equals($type->if)
+			&& $this->else->equals($type->else);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf(
+			'(%s %s %s ? %s : %s)',
+			$this->subject->describe($level),
+			$this->negated ? 'is not' : 'is',
+			$this->target->describe($level),
+			$this->if->describe($level),
+			$this->else->describe($level),
+		);
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->subject) && !TypeUtils::containsTemplateType($this->target);
+	}
+
+	protected function getResult(): Type
+	{
+		$isSuperType = $this->target->isSuperTypeOf($this->subject);
+
+		if ($isSuperType->yes()) {
+			return !$this->negated ? $this->getNormalizedIf() : $this->getNormalizedElse();
+		}
+
+		if ($isSuperType->no()) {
+			return !$this->negated ? $this->getNormalizedElse() : $this->getNormalizedIf();
+		}
+
+		return TypeCombinator::union(
+			$this->getNormalizedIf(),
+			$this->getNormalizedElse(),
+		);
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subject = $cb($this->subject);
+		$target = $cb($this->target);
+		$if = $cb($this->getNormalizedIf());
+		$else = $cb($this->getNormalizedElse());
+
+		if (
+			$this->subject === $subject
+			&& $this->target === $target
+			&& $this->getNormalizedIf() === $if
+			&& $this->getNormalizedElse() === $else
+		) {
+			return $this;
+		}
+
+		return new self($subject, $target, $if, $else, $this->negated);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$subject = $cb($this->subject, $right->subject);
+		$target = $cb($this->target, $right->target);
+		$if = $cb($this->getNormalizedIf(), $right->getNormalizedIf());
+		$else = $cb($this->getNormalizedElse(), $right->getNormalizedElse());
+
+		if (
+			$this->subject === $subject
+			&& $this->target === $target
+			&& $this->getNormalizedIf() === $if
+			&& $this->getNormalizedElse() === $else
+		) {
+			return $this;
+		}
+
+		return new self($subject, $target, $if, $else, $this->negated);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ConditionalTypeNode(
+			$this->subject->toPhpDocNode(),
+			$this->target->toPhpDocNode(),
+			$this->if->toPhpDocNode(),
+			$this->else->toPhpDocNode(),
+			$this->negated,
+		);
+	}
+
+	private function getNormalizedIf(): Type
+	{
+		return $this->normalizedIf ??= TypeTraverser::map(
+			$this->if,
+			fn (Type $type, callable $traverse) => $type === $this->subject
+				? (!$this->negated ? $this->getSubjectWithTargetIntersectedType() : $this->getSubjectWithTargetRemovedType())
+				: $traverse($type),
+		);
+	}
+
+	private function getNormalizedElse(): Type
+	{
+		return $this->normalizedElse ??= TypeTraverser::map(
+			$this->else,
+			fn (Type $type, callable $traverse) => $type === $this->subject
+				? (!$this->negated ? $this->getSubjectWithTargetRemovedType() : $this->getSubjectWithTargetIntersectedType())
+				: $traverse($type),
+		);
+	}
+
+	private function getSubjectWithTargetIntersectedType(): Type
+	{
+		return $this->subjectWithTargetIntersectedType ??= TypeCombinator::intersect($this->subject, $this->target);
+	}
+
+	private function getSubjectWithTargetRemovedType(): Type
+	{
+		return $this->subjectWithTargetRemovedType ??= TypeCombinator::remove($this->subject, $this->target);
+	}
+
+}
diff --git a/src/Type/ConditionalTypeForParameter.php b/src/Type/ConditionalTypeForParameter.php
new file mode 100644
index 00000000..b508aaa8
--- /dev/null
+++ b/src/Type/ConditionalTypeForParameter.php
@@ -0,0 +1,178 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\ConditionalTypeForParameterNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function array_merge;
+use function sprintf;
+
+/** @api */
+final class ConditionalTypeForParameter implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(
+		private string $parameterName,
+		private Type $target,
+		private Type $if,
+		private Type $else,
+		private bool $negated,
+	)
+	{
+	}
+
+	public function getParameterName(): string
+	{
+		return $this->parameterName;
+	}
+
+	public function getTarget(): Type
+	{
+		return $this->target;
+	}
+
+	public function getIf(): Type
+	{
+		return $this->if;
+	}
+
+	public function getElse(): Type
+	{
+		return $this->else;
+	}
+
+	public function isNegated(): bool
+	{
+		return $this->negated;
+	}
+
+	public function changeParameterName(string $parameterName): self
+	{
+		return new self(
+			$parameterName,
+			$this->target,
+			$this->if,
+			$this->else,
+			$this->negated,
+		);
+	}
+
+	public function toConditional(Type $subject): Type
+	{
+		return new ConditionalType(
+			$subject,
+			$this->target,
+			$this->if,
+			$this->else,
+			$this->negated,
+		);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return $this->if->isSuperTypeOf($type->if)
+				->and($this->else->isSuperTypeOf($type->else));
+		}
+
+		return $this->isSuperTypeOfDefault($type);
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return array_merge(
+			$this->target->getReferencedClasses(),
+			$this->if->getReferencedClasses(),
+			$this->else->getReferencedClasses(),
+		);
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return array_merge(
+			$this->target->getReferencedTemplateTypes($positionVariance),
+			$this->if->getReferencedTemplateTypes($positionVariance),
+			$this->else->getReferencedTemplateTypes($positionVariance),
+		);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->parameterName === $type->parameterName
+			&& $this->target->equals($type->target)
+			&& $this->if->equals($type->if)
+			&& $this->else->equals($type->else);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf(
+			'(%s %s %s ? %s : %s)',
+			$this->parameterName,
+			$this->negated ? 'is not' : 'is',
+			$this->target->describe($level),
+			$this->if->describe($level),
+			$this->else->describe($level),
+		);
+	}
+
+	public function isResolvable(): bool
+	{
+		return false;
+	}
+
+	protected function getResult(): Type
+	{
+		return TypeCombinator::union($this->if, $this->else);
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$target = $cb($this->target);
+		$if = $cb($this->if);
+		$else = $cb($this->else);
+
+		if ($this->target === $target && $this->if === $if && $this->else === $else) {
+			return $this;
+		}
+
+		return new self($this->parameterName, $target, $if, $else, $this->negated);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$target = $cb($this->target, $right->target);
+		$if = $cb($this->if, $right->if);
+		$else = $cb($this->else, $right->else);
+
+		if ($this->target === $target && $this->if === $if && $this->else === $else) {
+			return $this;
+		}
+
+		return new self($this->parameterName, $target, $if, $else, $this->negated);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ConditionalTypeForParameterNode(
+			$this->parameterName,
+			$this->target->toPhpDocNode(),
+			$this->if->toPhpDocNode(),
+			$this->else->toPhpDocNode(),
+			$this->negated,
+		);
+	}
+
+}
diff --git a/src/Type/Constant/ConstantArrayType.php b/src/Type/Constant/ConstantArrayType.php
new file mode 100644
index 00000000..2ef696bc
--- /dev/null
+++ b/src/Type/Constant/ConstantArrayType.php
@@ -0,0 +1,1692 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use Nette\Utils\Strings;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Internal\CombinationsHelper;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\Type\ArrayShapeItemNode;
+use PHPStan\PhpDocParser\Ast\Type\ArrayShapeNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\Callables\FunctionCallableVariant;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\InaccessibleMethod;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\PhpVersionStaticAccessor;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\HasOffsetType;
+use PHPStan\Type\Accessory\HasOffsetValueType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Traits\ArrayTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function array_pop;
+use function array_push;
+use function array_slice;
+use function array_unique;
+use function array_values;
+use function assert;
+use function count;
+use function implode;
+use function in_array;
+use function is_string;
+use function min;
+use function pow;
+use function range;
+use function sort;
+use function sprintf;
+use function str_contains;
+
+/**
+ * @api
+ */
+class ConstantArrayType implements Type
+{
+
+	use ArrayTypeTrait {
+		chunkArray as traitChunkArray;
+	}
+	use NonObjectTypeTrait;
+	use UndecidedComparisonTypeTrait;
+
+	private const DESCRIBE_LIMIT = 8;
+	private const CHUNK_FINITE_TYPES_LIMIT = 5;
+
+	private TrinaryLogic $isList;
+
+	/** @var self[]|null */
+	private ?array $allArrays = null;
+
+	private ?Type $iterableKeyType = null;
+
+	private ?Type $iterableValueType = null;
+
+	/**
+	 * @api
+	 * @param array<int, ConstantIntegerType|ConstantStringType> $keyTypes
+	 * @param array<int, Type> $valueTypes
+	 * @param non-empty-list<int> $nextAutoIndexes
+	 * @param int[] $optionalKeys
+	 */
+	public function __construct(
+		private array $keyTypes,
+		private array $valueTypes,
+		private array $nextAutoIndexes = [0],
+		private array $optionalKeys = [],
+		?TrinaryLogic $isList = null,
+	)
+	{
+		assert(count($keyTypes) === count($valueTypes));
+
+		$keyTypesCount = count($this->keyTypes);
+		if ($keyTypesCount === 0) {
+			$isList = TrinaryLogic::createYes();
+		}
+
+		if ($isList === null) {
+			$isList = TrinaryLogic::createNo();
+		}
+		$this->isList = $isList;
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [$this];
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$referencedClasses = [];
+		foreach ($this->getKeyTypes() as $keyType) {
+			foreach ($keyType->getReferencedClasses() as $referencedClass) {
+				$referencedClasses[] = $referencedClass;
+			}
+		}
+
+		foreach ($this->getValueTypes() as $valueType) {
+			foreach ($valueType->getReferencedClasses() as $referencedClass) {
+				$referencedClasses[] = $referencedClass;
+			}
+		}
+
+		return $referencedClasses;
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		if ($this->iterableKeyType !== null) {
+			return $this->iterableKeyType;
+		}
+
+		$keyTypesCount = count($this->keyTypes);
+		if ($keyTypesCount === 0) {
+			$keyType = new NeverType(true);
+		} elseif ($keyTypesCount === 1) {
+			$keyType = $this->keyTypes[0];
+		} else {
+			$keyType = new UnionType($this->keyTypes);
+		}
+
+		return $this->iterableKeyType = $keyType;
+	}
+
+	public function getIterableValueType(): Type
+	{
+		if ($this->iterableValueType !== null) {
+			return $this->iterableValueType;
+		}
+
+		return $this->iterableValueType = count($this->valueTypes) > 0 ? TypeCombinator::union(...$this->valueTypes) : new NeverType(true);
+	}
+
+	public function getKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getItemType(): Type
+	{
+		return $this->getIterableValueType();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	/**
+	 * @return non-empty-list<int>
+	 */
+	public function getNextAutoIndexes(): array
+	{
+		return $this->nextAutoIndexes;
+	}
+
+	/**
+	 * @return int[]
+	 */
+	public function getOptionalKeys(): array
+	{
+		return $this->optionalKeys;
+	}
+
+	/**
+	 * @return self[]
+	 */
+	public function getAllArrays(): array
+	{
+		if ($this->allArrays !== null) {
+			return $this->allArrays;
+		}
+
+		if (count($this->optionalKeys) <= 10) {
+			$optionalKeysCombinations = $this->powerSet($this->optionalKeys);
+		} else {
+			$optionalKeysCombinations = [
+				[],
+				$this->optionalKeys,
+			];
+		}
+
+		$requiredKeys = [];
+		foreach (array_keys($this->keyTypes) as $i) {
+			if (in_array($i, $this->optionalKeys, true)) {
+				continue;
+			}
+			$requiredKeys[] = $i;
+		}
+
+		$arrays = [];
+		foreach ($optionalKeysCombinations as $combination) {
+			$keys = array_merge($requiredKeys, $combination);
+			sort($keys);
+
+			if ($this->isList->yes() && array_keys($keys) !== $keys) {
+				continue;
+			}
+
+			$builder = ConstantArrayTypeBuilder::createEmpty();
+			foreach ($keys as $i) {
+				$builder->setOffsetValueType($this->keyTypes[$i], $this->valueTypes[$i]);
+			}
+
+			$array = $builder->getArray();
+			if (!$array instanceof self) {
+				throw new ShouldNotHappenException();
+			}
+
+			$arrays[] = $array;
+		}
+
+		return $this->allArrays = $arrays;
+	}
+
+	/**
+	 * @template T
+	 * @param T[] $in
+	 * @return T[][]
+	 */
+	private function powerSet(array $in): array
+	{
+		$count = count($in);
+		$members = pow(2, $count);
+		$return = [];
+		for ($i = 0; $i < $members; $i++) {
+			$b = sprintf('%0' . $count . 'b', $i);
+			$out = [];
+			for ($j = 0; $j < $count; $j++) {
+				if ($b[$j] !== '1') {
+					continue;
+				}
+
+				$out[] = $in[$j];
+			}
+			$return[] = $out;
+		}
+
+		return $return;
+	}
+
+	/**
+	 * @return array<int, ConstantIntegerType|ConstantStringType>
+	 */
+	public function getKeyTypes(): array
+	{
+		return $this->keyTypes;
+	}
+
+	/**
+	 * @return array<int, Type>
+	 */
+	public function getValueTypes(): array
+	{
+		return $this->valueTypes;
+	}
+
+	public function isOptionalKey(int $i): bool
+	{
+		return in_array($i, $this->optionalKeys, true);
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType && !$type instanceof IntersectionType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if ($type instanceof self && count($this->keyTypes) === 0) {
+			return AcceptsResult::createFromBoolean(count($type->keyTypes) === 0);
+		}
+
+		$result = AcceptsResult::createYes();
+		foreach ($this->keyTypes as $i => $keyType) {
+			$valueType = $this->valueTypes[$i];
+			$hasOffsetValueType = $type->hasOffsetValueType($keyType);
+			$hasOffset = new AcceptsResult(
+				$hasOffsetValueType,
+				$hasOffsetValueType->yes() || !$type->isConstantArray()->yes() ? [] : [sprintf('Array %s have offset %s.', $hasOffsetValueType->no() ? 'does not' : 'might not', $keyType->describe(VerbosityLevel::value()))],
+			);
+			if ($hasOffset->no()) {
+				if ($this->isOptionalKey($i)) {
+					continue;
+				}
+				return $hasOffset;
+			}
+			if ($hasOffset->maybe() && $this->isOptionalKey($i)) {
+				$hasOffset = AcceptsResult::createYes();
+			}
+
+			$result = $result->and($hasOffset);
+			$otherValueType = $type->getOffsetValueType($keyType);
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($valueType, $otherValueType);
+			$acceptsValue = $valueType->accepts($otherValueType, $strictTypes)->decorateReasons(
+				static fn (string $reason) => sprintf(
+					'Offset %s (%s) does not accept type %s: %s',
+					$keyType->describe(VerbosityLevel::precise()),
+					$valueType->describe($verbosity),
+					$otherValueType->describe($verbosity),
+					$reason,
+				),
+			);
+			if (!$acceptsValue->yes() && count($acceptsValue->reasons) === 0 && $type->isConstantArray()->yes()) {
+				$acceptsValue = new AcceptsResult($acceptsValue->result, [
+					sprintf(
+						'Offset %s (%s) does not accept type %s.',
+						$keyType->describe(VerbosityLevel::precise()),
+						$valueType->describe($verbosity),
+						$otherValueType->describe($verbosity),
+					),
+				]);
+			}
+			if ($acceptsValue->no()) {
+				return $acceptsValue;
+			}
+			$result = $result->and($acceptsValue);
+		}
+
+		$result = $result->and(new AcceptsResult($type->isArray(), []));
+		if ($type->isOversizedArray()->yes()) {
+			if (!$result->no()) {
+				return AcceptsResult::createYes();
+			}
+		}
+
+		return $result;
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			if (count($this->keyTypes) === 0) {
+				return new IsSuperTypeOfResult($type->isIterableAtLeastOnce()->negate(), []);
+			}
+
+			$results = [];
+			foreach ($this->keyTypes as $i => $keyType) {
+				$hasOffset = $type->hasOffsetValueType($keyType);
+				if ($hasOffset->no()) {
+					if (!$this->isOptionalKey($i)) {
+						return IsSuperTypeOfResult::createNo();
+					}
+
+					$results[] = IsSuperTypeOfResult::createYes();
+					continue;
+				} elseif ($hasOffset->maybe() && !$this->isOptionalKey($i)) {
+					$results[] = IsSuperTypeOfResult::createMaybe();
+				}
+
+				$isValueSuperType = $this->valueTypes[$i]->isSuperTypeOf($type->getOffsetValueType($keyType));
+				if ($isValueSuperType->no()) {
+					return $isValueSuperType->decorateReasons(static fn (string $reason) => sprintf('Offset %s: %s', $keyType->describe(VerbosityLevel::value()), $reason));
+				}
+				$results[] = $isValueSuperType;
+			}
+
+			return IsSuperTypeOfResult::createYes()->and(...$results);
+		}
+
+		if ($type instanceof ArrayType) {
+			$result = IsSuperTypeOfResult::createMaybe();
+			if (count($this->keyTypes) === 0) {
+				return $result;
+			}
+
+			$isKeySuperType = $this->getKeyType()->isSuperTypeOf($type->getKeyType());
+			if ($isKeySuperType->no()) {
+				return $isKeySuperType;
+			}
+
+			return $result->and($isKeySuperType, $this->getItemType()->isSuperTypeOf($type->getItemType()));
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isInteger()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		if ($this->isIterableAtLeastOnce()->no()) {
+			if ($type->isIterableAtLeastOnce()->yes()) {
+				return new ConstantBooleanType(false);
+			}
+
+			$constantScalarValues = $type->getConstantScalarValues();
+			if (count($constantScalarValues) > 0) {
+				$results = [];
+				foreach ($constantScalarValues as $constantScalarValue) {
+					// @phpstan-ignore equal.invalid, equal.notAllowed
+					$results[] = TrinaryLogic::createFromBoolean($constantScalarValue == []); // phpcs:ignore
+				}
+
+				return TrinaryLogic::extremeIdentity(...$results)->toBooleanType();
+			}
+		}
+
+		return new BooleanType();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if (count($this->keyTypes) !== count($type->keyTypes)) {
+			return false;
+		}
+
+		foreach ($this->keyTypes as $i => $keyType) {
+			$valueType = $this->valueTypes[$i];
+			if (!$valueType->equals($type->valueTypes[$i])) {
+				return false;
+			}
+			if (!$keyType->equals($type->keyTypes[$i])) {
+				return false;
+			}
+		}
+
+		if ($this->optionalKeys !== $type->optionalKeys) {
+			return false;
+		}
+
+		return true;
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		$typeAndMethods = $this->findTypeAndMethodNames();
+		if ($typeAndMethods === []) {
+			return TrinaryLogic::createNo();
+		}
+
+		$results = array_map(
+			static fn (ConstantArrayTypeAndMethod $typeAndMethod): TrinaryLogic => $typeAndMethod->getCertainty(),
+			$typeAndMethods,
+		);
+
+		return TrinaryLogic::createYes()->and(...$results);
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		$typeAndMethodNames = $this->findTypeAndMethodNames();
+		if ($typeAndMethodNames === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$acceptors = [];
+		foreach ($typeAndMethodNames as $typeAndMethodName) {
+			if ($typeAndMethodName->isUnknown() || !$typeAndMethodName->getCertainty()->yes()) {
+				$acceptors[] = new TrivialParametersAcceptor();
+				continue;
+			}
+
+			$method = $typeAndMethodName->getType()
+				->getMethod($typeAndMethodName->getMethod(), $scope);
+
+			if (!$scope->canCallMethod($method)) {
+				$acceptors[] = new InaccessibleMethod($method);
+				continue;
+			}
+
+			array_push($acceptors, ...FunctionCallableVariant::createFromVariants($method, $method->getVariants()));
+		}
+
+		return $acceptors;
+	}
+
+	/** @return ConstantArrayTypeAndMethod[] */
+	public function findTypeAndMethodNames(): array
+	{
+		if (count($this->keyTypes) !== 2) {
+			return [];
+		}
+
+		$classOrObject = null;
+		$method = null;
+		foreach ($this->keyTypes as $i => $keyType) {
+			if ($keyType->isSuperTypeOf(new ConstantIntegerType(0))->yes()) {
+				$classOrObject = $this->valueTypes[$i];
+				continue;
+			}
+
+			if (!$keyType->isSuperTypeOf(new ConstantIntegerType(1))->yes()) {
+				continue;
+			}
+
+			$method = $this->valueTypes[$i];
+		}
+
+		if ($classOrObject === null || $method === null) {
+			return [];
+		}
+
+		$callableArray = [$classOrObject, $method];
+
+		[$classOrObject, $methods] = $callableArray;
+		if (count($methods->getConstantStrings()) === 0) {
+			return [ConstantArrayTypeAndMethod::createUnknown()];
+		}
+
+		$type = $classOrObject->getObjectTypeOrClassStringObjectType();
+		if (!$type->isObject()->yes()) {
+			return [ConstantArrayTypeAndMethod::createUnknown()];
+		}
+
+		$typeAndMethods = [];
+		$phpVersion = PhpVersionStaticAccessor::getInstance();
+		foreach ($methods->getConstantStrings() as $methodName) {
+			$has = $type->hasMethod($methodName->getValue());
+			if ($has->no()) {
+				continue;
+			}
+
+			if (
+				$has->yes()
+				&& !$phpVersion->supportsCallableInstanceMethods()
+			) {
+				$methodReflection = $type->getMethod($methodName->getValue(), new OutOfClassScope());
+				if ($classOrObject->isString()->yes() && !$methodReflection->isStatic()) {
+					continue;
+				}
+			}
+
+			if ($this->isOptionalKey(0) || $this->isOptionalKey(1)) {
+				$has = $has->and(TrinaryLogic::createMaybe());
+			}
+
+			$typeAndMethods[] = ConstantArrayTypeAndMethod::createConcrete($type, $methodName->getValue(), $has);
+		}
+
+		return $typeAndMethods;
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		$offsetType = $offsetType->toArrayKey();
+		if ($offsetType instanceof UnionType) {
+			$results = [];
+			foreach ($offsetType->getTypes() as $innerType) {
+				$results[] = $this->hasOffsetValueType($innerType);
+			}
+
+			return TrinaryLogic::extremeIdentity(...$results);
+		}
+		if ($offsetType instanceof IntegerRangeType) {
+			$finiteTypes = $offsetType->getFiniteTypes();
+			if ($finiteTypes !== []) {
+				$results = [];
+				foreach ($finiteTypes as $innerType) {
+					$results[] = $this->hasOffsetValueType($innerType);
+				}
+
+				return TrinaryLogic::extremeIdentity(...$results);
+			}
+		}
+
+		$result = TrinaryLogic::createNo();
+		foreach ($this->keyTypes as $i => $keyType) {
+			if (
+				$keyType instanceof ConstantIntegerType
+				&& !$offsetType->isString()->no()
+				&& $offsetType->isConstantScalarValue()->no()
+			) {
+				return TrinaryLogic::createMaybe();
+			}
+
+			$has = $keyType->isSuperTypeOf($offsetType);
+			if ($has->yes()) {
+				if ($this->isOptionalKey($i)) {
+					return TrinaryLogic::createMaybe();
+				}
+				return TrinaryLogic::createYes();
+			}
+			if (!$has->maybe()) {
+				continue;
+			}
+
+			$result = TrinaryLogic::createMaybe();
+		}
+
+		return $result;
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if (count($this->keyTypes) === 0) {
+			return new ErrorType();
+		}
+
+		$offsetType = $offsetType->toArrayKey();
+		$matchingValueTypes = [];
+		$all = true;
+		$maybeAll = true;
+		foreach ($this->keyTypes as $i => $keyType) {
+			if ($keyType->isSuperTypeOf($offsetType)->no()) {
+				$all = false;
+
+				if (
+					$keyType instanceof ConstantIntegerType
+					&& !$offsetType->isString()->no()
+					&& $offsetType->isConstantScalarValue()->no()
+				) {
+					continue;
+				}
+				$maybeAll = false;
+				continue;
+			}
+
+			$matchingValueTypes[] = $this->valueTypes[$i];
+		}
+
+		if ($all) {
+			return $this->getIterableValueType();
+		}
+
+		if (count($matchingValueTypes) > 0) {
+			$type = TypeCombinator::union(...$matchingValueTypes);
+			if ($type instanceof ErrorType) {
+				return new MixedType();
+			}
+
+			return $type;
+		}
+
+		if ($maybeAll) {
+			return $this->getIterableValueType();
+		}
+
+		return new ErrorType(); // undefined offset
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createFromConstantArray($this);
+		$builder->setOffsetValueType($offsetType, $valueType);
+
+		return $builder->getArray();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		$offsetType = $offsetType->toArrayKey();
+		$builder = ConstantArrayTypeBuilder::createFromConstantArray($this);
+		foreach ($this->keyTypes as $keyType) {
+			if ($offsetType->isSuperTypeOf($keyType)->no()) {
+				continue;
+			}
+
+			$builder->setOffsetValueType($keyType, $valueType);
+		}
+
+		return $builder->getArray();
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		$offsetType = $offsetType->toArrayKey();
+		if ($offsetType instanceof ConstantIntegerType || $offsetType instanceof ConstantStringType) {
+			foreach ($this->keyTypes as $i => $keyType) {
+				if ($keyType->getValue() !== $offsetType->getValue()) {
+					continue;
+				}
+
+				$keyTypes = $this->keyTypes;
+				unset($keyTypes[$i]);
+				$valueTypes = $this->valueTypes;
+				unset($valueTypes[$i]);
+
+				$newKeyTypes = [];
+				$newValueTypes = [];
+				$newOptionalKeys = [];
+
+				$k = 0;
+				foreach ($keyTypes as $j => $newKeyType) {
+					$newKeyTypes[] = $newKeyType;
+					$newValueTypes[] = $valueTypes[$j];
+					if (in_array($j, $this->optionalKeys, true)) {
+						$newOptionalKeys[] = $k;
+					}
+					$k++;
+				}
+
+				return new self($newKeyTypes, $newValueTypes, $this->nextAutoIndexes, $newOptionalKeys, TrinaryLogic::createNo());
+			}
+
+			return $this;
+		}
+
+		$constantScalars = $offsetType->getConstantScalarTypes();
+		if (count($constantScalars) > 0) {
+			$optionalKeys = $this->optionalKeys;
+
+			foreach ($constantScalars as $constantScalar) {
+				$constantScalar = $constantScalar->toArrayKey();
+				if (!$constantScalar instanceof ConstantIntegerType && !$constantScalar instanceof ConstantStringType) {
+					continue;
+				}
+
+				foreach ($this->keyTypes as $i => $keyType) {
+					if ($keyType->getValue() !== $constantScalar->getValue()) {
+						continue;
+					}
+
+					if (in_array($i, $optionalKeys, true)) {
+						continue 2;
+					}
+
+					$optionalKeys[] = $i;
+				}
+			}
+
+			return new self($this->keyTypes, $this->valueTypes, $this->nextAutoIndexes, $optionalKeys, TrinaryLogic::createNo());
+		}
+
+		$optionalKeys = $this->optionalKeys;
+		$isList = $this->isList;
+		foreach ($this->keyTypes as $i => $keyType) {
+			if (!$offsetType->isSuperTypeOf($keyType)->yes()) {
+				continue;
+			}
+			$optionalKeys[] = $i;
+			$isList = TrinaryLogic::createNo();
+		}
+		$optionalKeys = array_values(array_unique($optionalKeys));
+
+		return new self($this->keyTypes, $this->valueTypes, $this->nextAutoIndexes, $optionalKeys, $isList);
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		$biggerOne = IntegerRangeType::fromInterval(1, null);
+		$finiteTypes = $lengthType->getFiniteTypes();
+		if ($biggerOne->isSuperTypeOf($lengthType)->yes() && count($finiteTypes) < self::CHUNK_FINITE_TYPES_LIMIT) {
+			$results = [];
+			foreach ($finiteTypes as $finiteType) {
+				if (!$finiteType instanceof ConstantIntegerType || $finiteType->getValue() < 1) {
+					return $this->traitChunkArray($lengthType, $preserveKeys);
+				}
+
+				$length = $finiteType->getValue();
+
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+
+				$keyTypesCount = count($this->keyTypes);
+				for ($i = 0; $i < $keyTypesCount; $i += $length) {
+					$chunk = $this->sliceArray(new ConstantIntegerType($i), new ConstantIntegerType($length), TrinaryLogic::createYes());
+					$builder->setOffsetValueType(null, $preserveKeys->yes() ? $chunk : $chunk->getValuesArray());
+				}
+
+				$results[] = $builder->getArray();
+			}
+
+			return TypeCombinator::union(...$results);
+		}
+
+		return $this->traitChunkArray($lengthType, $preserveKeys);
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		foreach ($this->valueTypes as $i => $keyType) {
+			if ($keyType->isInteger()->no()) {
+				$stringKeyType = $keyType->toString();
+				if ($stringKeyType instanceof ErrorType) {
+					return $stringKeyType;
+				}
+
+				$builder->setOffsetValueType($stringKeyType, $valueType, $this->isOptionalKey($i));
+			} else {
+				$builder->setOffsetValueType($keyType, $valueType, $this->isOptionalKey($i));
+			}
+		}
+
+		return $builder->getArray();
+	}
+
+	public function flipArray(): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		foreach ($this->keyTypes as $i => $keyType) {
+			$valueType = $this->valueTypes[$i];
+			$builder->setOffsetValueType(
+				$valueType->toArrayKey(),
+				$keyType,
+				$this->isOptionalKey($i),
+			);
+		}
+
+		return $builder->getArray();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		foreach ($this->keyTypes as $i => $keyType) {
+			$valueType = $this->valueTypes[$i];
+			$has = $otherArraysType->hasOffsetValueType($keyType);
+			if ($has->no()) {
+				continue;
+			}
+			$builder->setOffsetValueType($keyType, $valueType, $this->isOptionalKey($i) || !$has->yes());
+		}
+
+		return $builder->getArray();
+	}
+
+	public function popArray(): Type
+	{
+		return $this->removeLastElements(1);
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		for ($i = count($this->keyTypes) - 1; $i >= 0; $i--) {
+			$offsetType = $preserveKeys->yes() || $this->keyTypes[$i]->isInteger()->no()
+				? $this->keyTypes[$i]
+				: null;
+			$builder->setOffsetValueType($offsetType, $this->valueTypes[$i], $this->isOptionalKey($i));
+		}
+
+		return $builder->getArray();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		$matches = [];
+		$hasIdenticalValue = false;
+
+		foreach ($this->valueTypes as $index => $valueType) {
+			$isNeedleSuperType = $valueType->isSuperTypeOf($needleType);
+			if ($isNeedleSuperType->no()) {
+				continue;
+			}
+
+			if ($needleType instanceof ConstantScalarType && $valueType instanceof ConstantScalarType
+				&& $needleType->getValue() === $valueType->getValue()
+				&& !$this->isOptionalKey($index)
+			) {
+				$hasIdenticalValue = true;
+			}
+
+			$matches[] = $this->keyTypes[$index];
+		}
+
+		if (count($matches) > 0) {
+			if ($hasIdenticalValue) {
+				return TypeCombinator::union(...$matches);
+			}
+
+			return TypeCombinator::union(new ConstantBooleanType(false), ...$matches);
+		}
+
+		return new ConstantBooleanType(false);
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this->removeFirstElements(1);
+	}
+
+	public function shuffleArray(): Type
+	{
+		$valuesArray = $this->getValuesArray();
+
+		$isIterableAtLeastOnce = $valuesArray->isIterableAtLeastOnce();
+		if ($isIterableAtLeastOnce->no()) {
+			return $valuesArray;
+		}
+
+		$generalizedArray = new ArrayType($valuesArray->getIterableKeyType(), $valuesArray->getIterableValueType());
+
+		if ($isIterableAtLeastOnce->yes()) {
+			$generalizedArray = TypeCombinator::intersect($generalizedArray, new NonEmptyArrayType());
+		}
+		if ($valuesArray->isList->yes()) {
+			$generalizedArray = TypeCombinator::intersect($generalizedArray, new AccessoryArrayListType());
+		}
+
+		return $generalizedArray;
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		$keyTypesCount = count($this->keyTypes);
+		if ($keyTypesCount === 0) {
+			return $this;
+		}
+
+		$offset = $offsetType instanceof ConstantIntegerType ? $offsetType->getValue() : 0;
+		$length = $lengthType instanceof ConstantIntegerType ? $lengthType->getValue() : $keyTypesCount;
+
+		if ($length < 0) {
+			// Negative lengths prevent access to the most right n elements
+			return $this->removeLastElements($length * -1)
+				->sliceArray($offsetType, new NullType(), $preserveKeys);
+		}
+
+		if ($keyTypesCount + $offset <= 0) {
+			// A negative offset cannot reach left outside the array
+			$offset = 0;
+		}
+
+		if ($offset < 0) {
+			/*
+			 * Transforms the problem with the negative offset in one with a positive offset using array reversion.
+			 * The reason is belows handling of optional keys which works only from left to right.
+			 *
+			 * e.g.
+			 * array{a: 0, b: 1, c: 2, d: 3, e: 4}
+			 * with offset -4 and length 2 (which would be sliced to array{b: 1, c: 2})
+			 *
+			 * is transformed via reversion to
+			 *
+			 * array{e: 4, d: 3, c: 2, b: 1, a: 0}
+			 * with offset 2 and length 2 (which will be sliced to array{c: 2, b: 1} and then reversed again)
+			 */
+			$offset *= -1;
+			$reversedLength = min($length, $offset);
+			$reversedOffset = $offset - $reversedLength;
+			return $this->reverseArray(TrinaryLogic::createYes())
+				->sliceArray(new ConstantIntegerType($reversedOffset), new ConstantIntegerType($reversedLength), $preserveKeys)
+				->reverseArray(TrinaryLogic::createYes());
+		}
+
+		if ($offset > 0) {
+			return $this->removeFirstElements($offset, false)
+				->sliceArray(new ConstantIntegerType(0), $lengthType, $preserveKeys);
+		}
+
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		$nonOptionalElementsCount = 0;
+		$hasOptional = false;
+		for ($i = 0; $nonOptionalElementsCount < $length && $i < $keyTypesCount; $i++) {
+			$isOptional = $this->isOptionalKey($i);
+			if (!$isOptional) {
+				$nonOptionalElementsCount++;
+			} else {
+				$hasOptional = true;
+			}
+
+			$isLastElement = $nonOptionalElementsCount >= $length || $i + 1 >= $keyTypesCount;
+			if ($isLastElement && $length < $keyTypesCount && $hasOptional) {
+				// If the slice is not full yet, but has at least one optional key
+				// the last non-optional element is going to be optional.
+				// Otherwise, it would not fit into the slice if previous non-optional keys are there.
+				$isOptional = true;
+			}
+
+			$offsetType = $preserveKeys->yes() || $this->keyTypes[$i]->isInteger()->no()
+				? $this->keyTypes[$i]
+				: null;
+
+			$builder->setOffsetValueType($offsetType, $this->valueTypes[$i], $isOptional);
+		}
+
+		return $builder->getArray();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		$keysCount = count($this->keyTypes);
+		if ($keysCount === 0) {
+			return TrinaryLogic::createNo();
+		}
+
+		$optionalKeysCount = count($this->optionalKeys);
+		if ($optionalKeysCount < $keysCount) {
+			return TrinaryLogic::createYes();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		$optionalKeysCount = count($this->optionalKeys);
+		$totalKeysCount = count($this->getKeyTypes());
+		if ($optionalKeysCount === 0) {
+			return new ConstantIntegerType($totalKeysCount);
+		}
+
+		return IntegerRangeType::fromInterval($totalKeysCount - $optionalKeysCount, $totalKeysCount);
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		$keyTypes = [];
+		foreach ($this->keyTypes as $i => $keyType) {
+			$keyTypes[] = $keyType;
+			if (!$this->isOptionalKey($i)) {
+				break;
+			}
+		}
+
+		return TypeCombinator::union(...$keyTypes);
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		$keyTypes = [];
+		for ($i = count($this->keyTypes) - 1; $i >= 0; $i--) {
+			$keyTypes[] = $this->keyTypes[$i];
+			if (!$this->isOptionalKey($i)) {
+				break;
+			}
+		}
+
+		return TypeCombinator::union(...$keyTypes);
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		$valueTypes = [];
+		foreach ($this->valueTypes as $i => $valueType) {
+			$valueTypes[] = $valueType;
+			if (!$this->isOptionalKey($i)) {
+				break;
+			}
+		}
+
+		return TypeCombinator::union(...$valueTypes);
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		$valueTypes = [];
+		for ($i = count($this->keyTypes) - 1; $i >= 0; $i--) {
+			$valueTypes[] = $this->valueTypes[$i];
+			if (!$this->isOptionalKey($i)) {
+				break;
+			}
+		}
+
+		return TypeCombinator::union(...$valueTypes);
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return $this->isList;
+	}
+
+	/** @param positive-int $length */
+	private function removeLastElements(int $length): self
+	{
+		$keyTypesCount = count($this->keyTypes);
+		if ($keyTypesCount === 0) {
+			return $this;
+		}
+
+		$keyTypes = $this->keyTypes;
+		$valueTypes = $this->valueTypes;
+		$optionalKeys = $this->optionalKeys;
+		$nextAutoindexes = $this->nextAutoIndexes;
+
+		$optionalKeysRemoved = 0;
+		$newLength = $keyTypesCount - $length;
+		for ($i = $keyTypesCount - 1; $i >= 0; $i--) {
+			$isOptional = $this->isOptionalKey($i);
+
+			if ($i >= $newLength) {
+				if ($isOptional) {
+					$optionalKeysRemoved++;
+					foreach ($optionalKeys as $key => $value) {
+						if ($value === $i) {
+							unset($optionalKeys[$key]);
+							break;
+						}
+					}
+				}
+
+				$removedKeyType = array_pop($keyTypes);
+				array_pop($valueTypes);
+				$nextAutoindexes = $removedKeyType instanceof ConstantIntegerType
+					? [$removedKeyType->getValue()]
+					: $this->nextAutoIndexes;
+				continue;
+			}
+
+			if ($isOptional || $optionalKeysRemoved <= 0) {
+				continue;
+			}
+
+			$optionalKeys[] = $i;
+			$optionalKeysRemoved--;
+		}
+
+		return new self(
+			$keyTypes,
+			$valueTypes,
+			$nextAutoindexes,
+			array_values($optionalKeys),
+			$this->isList,
+		);
+	}
+
+	/** @param positive-int $length */
+	private function removeFirstElements(int $length, bool $reindex = true): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		$optionalKeysIgnored = 0;
+		foreach ($this->keyTypes as $i => $keyType) {
+			$isOptional = $this->isOptionalKey($i);
+			if ($i <= $length - 1) {
+				if ($isOptional) {
+					$optionalKeysIgnored++;
+				}
+				continue;
+			}
+
+			if (!$isOptional && $optionalKeysIgnored > 0) {
+				$isOptional = true;
+				$optionalKeysIgnored--;
+			}
+
+			$valueType = $this->valueTypes[$i];
+			if ($reindex && $keyType instanceof ConstantIntegerType) {
+				$keyType = null;
+			}
+
+			$builder->setOffsetValueType($keyType, $valueType, $isOptional);
+		}
+
+		return $builder->getArray();
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return $this->getArraySize()->toBoolean();
+	}
+
+	public function toInteger(): Type
+	{
+		return $this->toBoolean()->toInteger();
+	}
+
+	public function toFloat(): Type
+	{
+		return $this->toBoolean()->toFloat();
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		if (count($this->keyTypes) === 0) {
+			return $this;
+		}
+
+		if ($precision->isTemplateArgument()) {
+			return $this->traverse(static fn (Type $type) => $type->generalize($precision));
+		}
+
+		$arrayType = new ArrayType(
+			$this->getIterableKeyType()->generalize($precision),
+			$this->getIterableValueType()->generalize($precision),
+		);
+
+		$keyTypesCount = count($this->keyTypes);
+		$optionalKeysCount = count($this->optionalKeys);
+
+		$accessoryTypes = [];
+		if ($precision->isMoreSpecific() && ($keyTypesCount - $optionalKeysCount) < 32) {
+			foreach ($this->keyTypes as $i => $keyType) {
+				if ($this->isOptionalKey($i)) {
+					continue;
+				}
+
+				$accessoryTypes[] = new HasOffsetValueType($keyType, $this->valueTypes[$i]->generalize($precision));
+			}
+		} elseif ($keyTypesCount > $optionalKeysCount) {
+			$accessoryTypes[] = new NonEmptyArrayType();
+		}
+
+		if ($this->isList()->yes()) {
+			$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+		}
+
+		if (count($accessoryTypes) > 0) {
+			return TypeCombinator::intersect($arrayType, ...$accessoryTypes);
+		}
+
+		return $arrayType;
+	}
+
+	public function generalizeValues(): self
+	{
+		$valueTypes = [];
+		foreach ($this->valueTypes as $valueType) {
+			$valueTypes[] = $valueType->generalize(GeneralizePrecision::lessSpecific());
+		}
+
+		return new self($this->keyTypes, $valueTypes, $this->nextAutoIndexes, $this->optionalKeys, $this->isList);
+	}
+
+	public function getKeysArray(): self
+	{
+		return $this->getKeysOrValuesArray($this->keyTypes);
+	}
+
+	public function getValuesArray(): self
+	{
+		return $this->getKeysOrValuesArray($this->valueTypes);
+	}
+
+	/**
+	 * @param array<int, Type> $types
+	 */
+	private function getKeysOrValuesArray(array $types): self
+	{
+		$count = count($types);
+		$autoIndexes = range($count - count($this->optionalKeys), $count);
+		assert($autoIndexes !== []);
+
+		if ($this->isList->yes()) {
+			// Optimized version for lists: Assume that if a later key exists, then earlier keys also exist.
+			$keyTypes = array_map(
+				static fn (int $i): ConstantIntegerType => new ConstantIntegerType($i),
+				array_keys($types),
+			);
+			return new self($keyTypes, $types, $autoIndexes, $this->optionalKeys, TrinaryLogic::createYes());
+		}
+
+		$keyTypes = [];
+		$valueTypes = [];
+		$optionalKeys = [];
+		$maxIndex = 0;
+
+		foreach ($types as $i => $type) {
+			$keyTypes[] = new ConstantIntegerType($i);
+
+			if ($this->isOptionalKey($maxIndex)) {
+				// move $maxIndex to next non-optional key
+				do {
+					$maxIndex++;
+				} while ($maxIndex < $count && $this->isOptionalKey($maxIndex));
+			}
+
+			if ($i === $maxIndex) {
+				$valueTypes[] = $type;
+			} else {
+				$valueTypes[] = TypeCombinator::union(...array_slice($types, $i, $maxIndex - $i + 1));
+				if ($maxIndex >= $count) {
+					$optionalKeys[] = $i;
+				}
+			}
+			$maxIndex++;
+		}
+
+		return new self($keyTypes, $valueTypes, $autoIndexes, $optionalKeys, TrinaryLogic::createYes());
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$describeValue = function (bool $truncate) use ($level): string {
+			$items = [];
+			$values = [];
+			$exportValuesOnly = true;
+			foreach ($this->keyTypes as $i => $keyType) {
+				$valueType = $this->valueTypes[$i];
+				if ($keyType->getValue() !== $i) {
+					$exportValuesOnly = false;
+				}
+
+				$isOptional = $this->isOptionalKey($i);
+				if ($isOptional) {
+					$exportValuesOnly = false;
+				}
+
+				$keyDescription = $keyType->getValue();
+				if (is_string($keyDescription)) {
+					if (str_contains($keyDescription, '"')) {
+						$keyDescription = sprintf('\'%s\'', $keyDescription);
+					} elseif (str_contains($keyDescription, '\'')) {
+						$keyDescription = sprintf('"%s"', $keyDescription);
+					}
+				}
+
+				$valueTypeDescription = $valueType->describe($level);
+				$items[] = sprintf('%s%s: %s', $keyDescription, $isOptional ? '?' : '', $valueTypeDescription);
+				$values[] = $valueTypeDescription;
+			}
+
+			$append = '';
+			if ($truncate && count($items) > self::DESCRIBE_LIMIT) {
+				$items = array_slice($items, 0, self::DESCRIBE_LIMIT);
+				$values = array_slice($values, 0, self::DESCRIBE_LIMIT);
+				$append = ', ...';
+			}
+
+			return sprintf(
+				'array{%s%s}',
+				implode(', ', $exportValuesOnly ? $values : $items),
+				$append,
+			);
+		};
+		return $level->handle(
+			fn (): string => $this->isIterableAtLeastOnce()->no() ? 'array' : sprintf('array<%s, %s>', $this->getIterableKeyType()->describe($level), $this->getIterableValueType()->describe($level)),
+			static fn (): string => $describeValue(true),
+			static fn (): string => $describeValue(false),
+		);
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if ($receivedType instanceof self) {
+			$typeMap = TemplateTypeMap::createEmpty();
+			foreach ($this->keyTypes as $i => $keyType) {
+				$valueType = $this->valueTypes[$i];
+				if ($receivedType->hasOffsetValueType($keyType)->no()) {
+					continue;
+				}
+				$receivedValueType = $receivedType->getOffsetValueType($keyType);
+				$typeMap = $typeMap->union($valueType->inferTemplateTypes($receivedValueType));
+			}
+
+			return $typeMap;
+		}
+
+		if ($receivedType->isArray()->yes()) {
+			$keyTypeMap = $this->getIterableKeyType()->inferTemplateTypes($receivedType->getIterableKeyType());
+			$itemTypeMap = $this->getIterableValueType()->inferTemplateTypes($receivedType->getIterableValueType());
+
+			return $keyTypeMap->union($itemTypeMap);
+		}
+
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$variance = $positionVariance->compose(TemplateTypeVariance::createCovariant());
+		$references = [];
+
+		foreach ($this->keyTypes as $type) {
+			foreach ($type->getReferencedTemplateTypes($variance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		foreach ($this->valueTypes as $type) {
+			foreach ($type->getReferencedTemplateTypes($variance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove->isConstantArray()->yes() && $typeToRemove->isIterableAtLeastOnce()->no()) {
+			return TypeCombinator::intersect($this, new NonEmptyArrayType());
+		}
+
+		if ($typeToRemove instanceof NonEmptyArrayType) {
+			return new ConstantArrayType([], []);
+		}
+
+		if ($typeToRemove instanceof HasOffsetType) {
+			return $this->unsetOffset($typeToRemove->getOffsetType());
+		}
+
+		if ($typeToRemove instanceof HasOffsetValueType) {
+			return $this->unsetOffset($typeToRemove->getOffsetType());
+		}
+
+		return null;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$valueTypes = [];
+
+		$stillOriginal = true;
+		foreach ($this->valueTypes as $valueType) {
+			$transformedValueType = $cb($valueType);
+			if ($transformedValueType !== $valueType) {
+				$stillOriginal = false;
+			}
+
+			$valueTypes[] = $transformedValueType;
+		}
+
+		if ($stillOriginal) {
+			return $this;
+		}
+
+		return new self($this->keyTypes, $valueTypes, $this->nextAutoIndexes, $this->optionalKeys, $this->isList);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right->isArray()->yes()) {
+			return $this;
+		}
+
+		$valueTypes = [];
+
+		$stillOriginal = true;
+		foreach ($this->valueTypes as $i => $valueType) {
+			$keyType = $this->keyTypes[$i];
+			$transformedValueType = $cb($valueType, $right->getOffsetValueType($keyType));
+			if ($transformedValueType !== $valueType) {
+				$stillOriginal = false;
+			}
+
+			$valueTypes[] = $transformedValueType;
+		}
+
+		if ($stillOriginal) {
+			return $this;
+		}
+
+		return new self($this->keyTypes, $valueTypes, $this->nextAutoIndexes, $this->optionalKeys, $this->isList);
+	}
+
+	public function isKeysSupersetOf(self $otherArray): bool
+	{
+		$keyTypesCount = count($this->keyTypes);
+		$otherKeyTypesCount = count($otherArray->keyTypes);
+
+		if ($keyTypesCount < $otherKeyTypesCount) {
+			return false;
+		}
+
+		if ($otherKeyTypesCount === 0) {
+			return $keyTypesCount === 0;
+		}
+
+		$failOnDifferentValueType = $keyTypesCount !== $otherKeyTypesCount || $keyTypesCount < 2;
+
+		$keyTypes = $this->keyTypes;
+
+		foreach ($otherArray->keyTypes as $j => $keyType) {
+			$i = self::findKeyIndex($keyType, $keyTypes);
+			if ($i === null) {
+				return false;
+			}
+
+			unset($keyTypes[$i]);
+
+			$valueType = $this->valueTypes[$i];
+			$otherValueType = $otherArray->valueTypes[$j];
+			if (!$otherValueType->isSuperTypeOf($valueType)->no()) {
+				continue;
+			}
+
+			if ($failOnDifferentValueType) {
+				return false;
+			}
+			$failOnDifferentValueType = true;
+		}
+
+		$requiredKeyCount = 0;
+		foreach (array_keys($keyTypes) as $i) {
+			if ($this->isOptionalKey($i)) {
+				continue;
+			}
+
+			$requiredKeyCount++;
+			if ($requiredKeyCount > 1) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function mergeWith(self $otherArray): self
+	{
+		// only call this after verifying isKeysSupersetOf, or if losing tagged unions is not an issue
+		$valueTypes = $this->valueTypes;
+		$optionalKeys = $this->optionalKeys;
+		foreach ($this->keyTypes as $i => $keyType) {
+			$otherIndex = $otherArray->getKeyIndex($keyType);
+			if ($otherIndex === null) {
+				$optionalKeys[] = $i;
+				continue;
+			}
+			if ($otherArray->isOptionalKey($otherIndex)) {
+				$optionalKeys[] = $i;
+			}
+			$otherValueType = $otherArray->valueTypes[$otherIndex];
+			$valueTypes[$i] = TypeCombinator::union($valueTypes[$i], $otherValueType);
+		}
+
+		$optionalKeys = array_values(array_unique($optionalKeys));
+
+		$nextAutoIndexes = array_values(array_unique(array_merge($this->nextAutoIndexes, $otherArray->nextAutoIndexes)));
+		sort($nextAutoIndexes);
+
+		return new self($this->keyTypes, $valueTypes, $nextAutoIndexes, $optionalKeys, $this->isList->and($otherArray->isList));
+	}
+
+	/**
+	 * @param ConstantIntegerType|ConstantStringType $otherKeyType
+	 */
+	private function getKeyIndex($otherKeyType): ?int
+	{
+		return self::findKeyIndex($otherKeyType, $this->keyTypes);
+	}
+
+	/**
+	 * @param ConstantIntegerType|ConstantStringType $otherKeyType
+	 * @param array<int, ConstantIntegerType|ConstantStringType> $keyTypes
+	 */
+	private static function findKeyIndex($otherKeyType, array $keyTypes): ?int
+	{
+		foreach ($keyTypes as $i => $keyType) {
+			if ($keyType->equals($otherKeyType)) {
+				return $i;
+			}
+		}
+
+		return null;
+	}
+
+	public function makeOffsetRequired(Type $offsetType): self
+	{
+		$offsetType = $offsetType->toArrayKey();
+		$optionalKeys = $this->optionalKeys;
+		foreach ($this->keyTypes as $i => $keyType) {
+			if (!$keyType->equals($offsetType)) {
+				continue;
+			}
+
+			foreach ($optionalKeys as $j => $key) {
+				if ($i === $key) {
+					unset($optionalKeys[$j]);
+					return new self($this->keyTypes, $this->valueTypes, $this->nextAutoIndexes, array_values($optionalKeys), $this->isList);
+				}
+			}
+
+			break;
+		}
+
+		return $this;
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		$items = [];
+		$values = [];
+		$exportValuesOnly = true;
+		foreach ($this->keyTypes as $i => $keyType) {
+			if ($keyType->getValue() !== $i) {
+				$exportValuesOnly = false;
+			}
+			$keyPhpDocNode = $keyType->toPhpDocNode();
+			if (!$keyPhpDocNode instanceof ConstTypeNode) {
+				continue;
+			}
+			$valueType = $this->valueTypes[$i];
+
+			/** @var ConstExprStringNode|ConstExprIntegerNode $keyNode */
+			$keyNode = $keyPhpDocNode->constExpr;
+			if ($keyNode instanceof ConstExprStringNode) {
+				$value = $keyNode->value;
+				if (self::isValidIdentifier($value)) {
+					$keyNode = new IdentifierTypeNode($value);
+				}
+			}
+
+			$isOptional = $this->isOptionalKey($i);
+			if ($isOptional) {
+				$exportValuesOnly = false;
+			}
+			$items[] = new ArrayShapeItemNode(
+				$keyNode,
+				$isOptional,
+				$valueType->toPhpDocNode(),
+			);
+			$values[] = new ArrayShapeItemNode(
+				null,
+				$isOptional,
+				$valueType->toPhpDocNode(),
+			);
+		}
+
+		return ArrayShapeNode::createSealed($exportValuesOnly ? $values : $items);
+	}
+
+	public static function isValidIdentifier(string $value): bool
+	{
+		$result = Strings::match($value, '~^(?:[\\\\]?+[a-z_\\x80-\\xFF][0-9a-z_\\x80-\\xFF-]*+)++$~si');
+
+		return $result !== null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		$arraysArraysForCombinations = [];
+		$count = 0;
+		foreach ($this->getAllArrays() as $array) {
+			$values = $array->getValueTypes();
+			$arraysForCombinations = [];
+			$combinationCount = 1;
+			foreach ($values as $valueType) {
+				$finiteTypes = $valueType->getFiniteTypes();
+				if ($finiteTypes === []) {
+					return [];
+				}
+				$arraysForCombinations[] = $finiteTypes;
+				$combinationCount *= count($finiteTypes);
+			}
+			$arraysArraysForCombinations[] = $arraysForCombinations;
+			$count += $combinationCount;
+		}
+
+		if ($count > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return [];
+		}
+
+		$finiteTypes = [];
+		foreach ($arraysArraysForCombinations as $arraysForCombinations) {
+			$combinations = CombinationsHelper::combinations($arraysForCombinations);
+			foreach ($combinations as $combination) {
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+				foreach ($combination as $i => $v) {
+					$builder->setOffsetValueType($this->keyTypes[$i], $v);
+				}
+				$finiteTypes[] = $builder->getArray();
+			}
+		}
+
+		return $finiteTypes;
+	}
+
+}
diff --git a/src/Type/Constant/ConstantArrayTypeAndMethod.php b/src/Type/Constant/ConstantArrayTypeAndMethod.php
new file mode 100644
index 00000000..56b30dcd
--- /dev/null
+++ b/src/Type/Constant/ConstantArrayTypeAndMethod.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+/**
+ * @api
+ */
+final class ConstantArrayTypeAndMethod
+{
+
+	private function __construct(
+		private ?Type $type,
+		private ?string $method,
+		private TrinaryLogic $certainty,
+	)
+	{
+	}
+
+	public static function createConcrete(
+		Type $type,
+		string $method,
+		TrinaryLogic $certainty,
+	): self
+	{
+		if ($certainty->no()) {
+			throw new ShouldNotHappenException();
+		}
+		return new self($type, $method, $certainty);
+	}
+
+	public static function createUnknown(): self
+	{
+		return new self(null, null, TrinaryLogic::createMaybe());
+	}
+
+	public function isUnknown(): bool
+	{
+		return $this->type === null;
+	}
+
+	public function getType(): Type
+	{
+		if ($this->type === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $this->type;
+	}
+
+	public function getMethod(): string
+	{
+		if ($this->method === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $this->method;
+	}
+
+	public function getCertainty(): TrinaryLogic
+	{
+		return $this->certainty;
+	}
+
+}
diff --git a/src/Type/Constant/ConstantArrayTypeBuilder.php b/src/Type/Constant/ConstantArrayTypeBuilder.php
new file mode 100644
index 00000000..9c87ff6e
--- /dev/null
+++ b/src/Type/Constant/ConstantArrayTypeBuilder.php
@@ -0,0 +1,322 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_filter;
+use function array_map;
+use function array_unique;
+use function array_values;
+use function count;
+use function in_array;
+use function is_float;
+use function max;
+use function min;
+use function range;
+
+/**
+ * @api
+ */
+final class ConstantArrayTypeBuilder
+{
+
+	public const ARRAY_COUNT_LIMIT = 256;
+
+	private bool $degradeToGeneralArray = false;
+
+	private bool $oversized = false;
+
+	/**
+	 * @param array<int, Type> $keyTypes
+	 * @param array<int, Type> $valueTypes
+	 * @param non-empty-list<int> $nextAutoIndexes
+	 * @param array<int> $optionalKeys
+	 */
+	private function __construct(
+		private array $keyTypes,
+		private array $valueTypes,
+		private array $nextAutoIndexes,
+		private array $optionalKeys,
+		private TrinaryLogic $isList,
+	)
+	{
+	}
+
+	public static function createEmpty(): self
+	{
+		return new self([], [], [0], [], TrinaryLogic::createYes());
+	}
+
+	public static function createFromConstantArray(ConstantArrayType $startArrayType): self
+	{
+		$builder = new self(
+			$startArrayType->getKeyTypes(),
+			$startArrayType->getValueTypes(),
+			$startArrayType->getNextAutoIndexes(),
+			$startArrayType->getOptionalKeys(),
+			$startArrayType->isList(),
+		);
+
+		if (count($startArrayType->getKeyTypes()) > self::ARRAY_COUNT_LIMIT) {
+			$builder->degradeToGeneralArray(true);
+		}
+
+		return $builder;
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $optional = false): void
+	{
+		if ($offsetType !== null) {
+			$offsetType = $offsetType->toArrayKey();
+		}
+
+		if (!$this->degradeToGeneralArray) {
+			if ($offsetType === null) {
+				$newAutoIndexes = $optional ? $this->nextAutoIndexes : [];
+				$hasOptional = false;
+				foreach ($this->keyTypes as $i => $keyType) {
+					if (!$keyType instanceof ConstantIntegerType) {
+						continue;
+					}
+
+					if (!in_array($keyType->getValue(), $this->nextAutoIndexes, true)) {
+						continue;
+					}
+
+					$this->valueTypes[$i] = TypeCombinator::union($this->valueTypes[$i], $valueType);
+
+					if (!$hasOptional && !$optional) {
+						$this->optionalKeys = array_values(array_filter($this->optionalKeys, static fn (int $index): bool => $index !== $i));
+					}
+
+					/** @var int|float $newAutoIndex */
+					$newAutoIndex = $keyType->getValue() + 1;
+					if (is_float($newAutoIndex)) {
+						$newAutoIndex = $keyType->getValue();
+					}
+
+					$newAutoIndexes[] = $newAutoIndex;
+					$hasOptional = true;
+				}
+
+				$max = max($this->nextAutoIndexes);
+
+				$this->keyTypes[] = new ConstantIntegerType($max);
+				$this->valueTypes[] = $valueType;
+
+				/** @var int|float $newAutoIndex */
+				$newAutoIndex = $max + 1;
+				if (is_float($newAutoIndex)) {
+					$newAutoIndex = $max;
+				}
+
+				$newAutoIndexes[] = $newAutoIndex;
+				$this->nextAutoIndexes = array_values(array_unique($newAutoIndexes));
+
+				if ($optional || $hasOptional) {
+					$this->optionalKeys[] = count($this->keyTypes) - 1;
+				}
+
+				if (count($this->keyTypes) > self::ARRAY_COUNT_LIMIT) {
+					$this->degradeToGeneralArray = true;
+					$this->oversized = true;
+				}
+
+				return;
+			}
+
+			if ($offsetType instanceof ConstantIntegerType || $offsetType instanceof ConstantStringType) {
+				/** @var ConstantIntegerType|ConstantStringType $keyType */
+				foreach ($this->keyTypes as $i => $keyType) {
+					if ($keyType->getValue() !== $offsetType->getValue()) {
+						continue;
+					}
+
+					if ($optional) {
+						$valueType = TypeCombinator::union($valueType, $this->valueTypes[$i]);
+					}
+
+					$this->valueTypes[$i] = $valueType;
+
+					if (!$optional) {
+						$this->optionalKeys = array_values(array_filter($this->optionalKeys, static fn (int $index): bool => $index !== $i));
+						if ($keyType instanceof ConstantIntegerType) {
+							$nextAutoIndexes = array_values(array_filter($this->nextAutoIndexes, static fn (int $index) => $index > $keyType->getValue()));
+							if (count($nextAutoIndexes) === 0) {
+								throw new ShouldNotHappenException();
+							}
+							$this->nextAutoIndexes = $nextAutoIndexes;
+						}
+					}
+					return;
+				}
+
+				$this->keyTypes[] = $offsetType;
+				$this->valueTypes[] = $valueType;
+
+				if ($offsetType instanceof ConstantIntegerType) {
+					$min = min($this->nextAutoIndexes);
+					$max = max($this->nextAutoIndexes);
+					if ($offsetType->getValue() > $min) {
+						if ($offsetType->getValue() <= $max) {
+							$this->isList = $this->isList->and(TrinaryLogic::createMaybe());
+						} else {
+							$this->isList = TrinaryLogic::createNo();
+						}
+					}
+					if ($offsetType->getValue() >= $max) {
+						/** @var int|float $newAutoIndex */
+						$newAutoIndex = $offsetType->getValue() + 1;
+						if (is_float($newAutoIndex)) {
+							$newAutoIndex = $max;
+						}
+						if (!$optional) {
+							$this->nextAutoIndexes = [$newAutoIndex];
+						} else {
+							$this->nextAutoIndexes[] = $newAutoIndex;
+						}
+					}
+				} else {
+					$this->isList = TrinaryLogic::createNo();
+				}
+
+				if ($optional) {
+					$this->optionalKeys[] = count($this->keyTypes) - 1;
+				}
+
+				if (count($this->keyTypes) > self::ARRAY_COUNT_LIMIT) {
+					$this->degradeToGeneralArray = true;
+					$this->oversized = true;
+				}
+
+				return;
+			}
+
+			$scalarTypes = $offsetType->getConstantScalarTypes();
+			if (count($scalarTypes) === 0) {
+				$integerRanges = TypeUtils::getIntegerRanges($offsetType);
+				if (count($integerRanges) > 0) {
+					foreach ($integerRanges as $integerRange) {
+						if ($integerRange->getMin() === null) {
+							break;
+						}
+						if ($integerRange->getMax() === null) {
+							break;
+						}
+
+						$rangeLength = $integerRange->getMax() - $integerRange->getMin();
+						if ($rangeLength >= self::ARRAY_COUNT_LIMIT) {
+							$scalarTypes = [];
+							break;
+						}
+
+						foreach (range($integerRange->getMin(), $integerRange->getMax()) as $rangeValue) {
+							$scalarTypes[] = new ConstantIntegerType($rangeValue);
+						}
+					}
+				}
+			}
+			if (count($scalarTypes) > 0 && count($scalarTypes) < self::ARRAY_COUNT_LIMIT) {
+				$match = true;
+				$valueTypes = $this->valueTypes;
+				foreach ($scalarTypes as $scalarType) {
+					$scalarOffsetType = $scalarType->toArrayKey();
+					if (!$scalarOffsetType instanceof ConstantIntegerType && !$scalarOffsetType instanceof ConstantStringType) {
+						throw new ShouldNotHappenException();
+					}
+					$offsetMatch = false;
+
+					/** @var ConstantIntegerType|ConstantStringType $keyType */
+					foreach ($this->keyTypes as $i => $keyType) {
+						if ($keyType->getValue() !== $scalarOffsetType->getValue()) {
+							continue;
+						}
+
+						$valueTypes[$i] = TypeCombinator::union($valueTypes[$i], $valueType);
+						$offsetMatch = true;
+					}
+
+					if ($offsetMatch) {
+						continue;
+					}
+
+					$match = false;
+				}
+
+				if ($match) {
+					$this->valueTypes = $valueTypes;
+					return;
+				}
+			}
+
+			$this->isList = TrinaryLogic::createNo();
+		}
+
+		if ($offsetType === null) {
+			$offsetType = TypeCombinator::union(...array_map(static fn (int $index) => new ConstantIntegerType($index), $this->nextAutoIndexes));
+		} else {
+			$this->isList = TrinaryLogic::createNo();
+		}
+
+		$this->keyTypes[] = $offsetType;
+		$this->valueTypes[] = $valueType;
+		if ($optional) {
+			$this->optionalKeys[] = count($this->keyTypes) - 1;
+		}
+		$this->degradeToGeneralArray = true;
+	}
+
+	public function degradeToGeneralArray(bool $oversized = false): void
+	{
+		$this->degradeToGeneralArray = true;
+		$this->oversized = $this->oversized || $oversized;
+	}
+
+	public function getArray(): Type
+	{
+		$keyTypesCount = count($this->keyTypes);
+		if ($keyTypesCount === 0) {
+			return new ConstantArrayType([], []);
+		}
+
+		if (!$this->degradeToGeneralArray) {
+			/** @var array<int, ConstantIntegerType|ConstantStringType> $keyTypes */
+			$keyTypes = $this->keyTypes;
+			return new ConstantArrayType($keyTypes, $this->valueTypes, $this->nextAutoIndexes, $this->optionalKeys, $this->isList);
+		}
+
+		$array = new ArrayType(
+			TypeCombinator::union(...$this->keyTypes),
+			TypeCombinator::union(...$this->valueTypes),
+		);
+
+		if (count($this->optionalKeys) < $keyTypesCount) {
+			$array = TypeCombinator::intersect($array, new NonEmptyArrayType());
+		}
+
+		if ($this->oversized) {
+			$array = TypeCombinator::intersect($array, new OversizedArrayType());
+		}
+
+		if ($this->isList->yes()) {
+			$array = TypeCombinator::intersect($array, new AccessoryArrayListType());
+		}
+
+		return $array;
+	}
+
+	public function isList(): bool
+	{
+		return $this->isList->yes();
+	}
+
+}
diff --git a/src/Type/Constant/ConstantBooleanType.php b/src/Type/Constant/ConstantBooleanType.php
new file mode 100644
index 00000000..40bc7ca7
--- /dev/null
+++ b/src/Type/Constant/ConstantBooleanType.php
@@ -0,0 +1,145 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\Traits\ConstantScalarTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+
+/** @api */
+class ConstantBooleanType extends BooleanType implements ConstantScalarType
+{
+
+	use ConstantScalarTypeTrait {
+		looseCompare as private scalarLooseCompare;
+	}
+
+	/** @api */
+	public function __construct(private bool $value)
+	{
+		parent::__construct();
+	}
+
+	public function getValue(): bool
+	{
+		return $this->value;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $this->value ? 'true' : 'false';
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		if ($this->value) {
+			return StaticTypeFactory::falsey();
+		}
+		return new NeverType();
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		if ($this->value) {
+			return new MixedType();
+		}
+		return StaticTypeFactory::falsey();
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		if ($this->value) {
+			return new NeverType();
+		}
+		return StaticTypeFactory::truthy();
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		if ($this->value) {
+			return StaticTypeFactory::truthy();
+		}
+		return new MixedType();
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return $this;
+	}
+
+	public function toNumber(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toString(): Type
+	{
+		return new ConstantStringType((string) $this->value);
+	}
+
+	public function toInteger(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function toFloat(): Type
+	{
+		return new ConstantFloatType((float) $this->value);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->value === true);
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->value === false);
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new BooleanType();
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode($this->value ? 'true' : 'false');
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isObject()->yes()) {
+			return $this;
+		}
+
+		return $this->scalarLooseCompare($type, $phpVersion);
+	}
+
+}
diff --git a/src/Type/Constant/ConstantFloatType.php b/src/Type/Constant/ConstantFloatType.php
new file mode 100644
index 00000000..0cf66ce5
--- /dev/null
+++ b/src/Type/Constant/ConstantFloatType.php
@@ -0,0 +1,104 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprFloatNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Traits\ConstantNumericComparisonTypeTrait;
+use PHPStan\Type\Traits\ConstantScalarTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function abs;
+use function ini_get;
+use function ini_set;
+use function is_finite;
+use function is_nan;
+use function str_contains;
+
+/** @api */
+class ConstantFloatType extends FloatType implements ConstantScalarType
+{
+
+	use ConstantScalarTypeTrait;
+	use ConstantScalarToBooleanTrait;
+	use ConstantNumericComparisonTypeTrait;
+
+	/** @api */
+	public function __construct(private float $value)
+	{
+		parent::__construct();
+	}
+
+	public function getValue(): float
+	{
+		return $this->value;
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self && ($this->value === $type->value || is_nan($this->value) && is_nan($type->value));
+	}
+
+	private function castFloatToString(float $value): string
+	{
+		$precisionBackup = ini_get('precision');
+		ini_set('precision', '-1');
+		try {
+			$valueStr = (string) $value;
+			if (is_finite($value) && !str_contains($valueStr, '.')) {
+				$valueStr .= '.0';
+			}
+
+			return $valueStr;
+		} finally {
+			ini_set('precision', $precisionBackup);
+		}
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'float',
+			fn (): string => $this->castFloatToString($this->value),
+		);
+	}
+
+	public function toString(): Type
+	{
+		return new ConstantStringType((string) $this->value);
+	}
+
+	public function toInteger(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new self(abs($this->value));
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new FloatType();
+	}
+
+	/**
+	 * @return ConstTypeNode
+	 */
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ConstTypeNode(new ConstExprFloatNode($this->castFloatToString($this->value)));
+	}
+
+}
diff --git a/src/Type/Constant/ConstantIntegerType.php b/src/Type/Constant/ConstantIntegerType.php
new file mode 100644
index 00000000..7d37bdbd
--- /dev/null
+++ b/src/Type/Constant/ConstantIntegerType.php
@@ -0,0 +1,109 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\Traits\ConstantNumericComparisonTypeTrait;
+use PHPStan\Type\Traits\ConstantScalarTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function abs;
+use function sprintf;
+
+/** @api */
+class ConstantIntegerType extends IntegerType implements ConstantScalarType
+{
+
+	use ConstantScalarTypeTrait;
+	use ConstantScalarToBooleanTrait;
+	use ConstantNumericComparisonTypeTrait;
+
+	/** @api */
+	public function __construct(private int $value)
+	{
+		parent::__construct();
+	}
+
+	public function getValue(): int
+	{
+		return $this->value;
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return $this->value === $type->value ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createNo();
+		}
+
+		if ($type instanceof IntegerRangeType) {
+			$min = $type->getMin();
+			$max = $type->getMax();
+			if (($min === null || $min <= $this->value) && ($max === null || $this->value <= $max)) {
+				return IsSuperTypeOfResult::createMaybe();
+			}
+
+			return IsSuperTypeOfResult::createNo();
+		}
+
+		if ($type instanceof parent) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'int',
+			fn (): string => sprintf('%s', $this->value),
+		);
+	}
+
+	public function toFloat(): Type
+	{
+		return new ConstantFloatType($this->value);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new self(abs($this->value));
+	}
+
+	public function toString(): Type
+	{
+		return new ConstantStringType((string) $this->value);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new IntegerType();
+	}
+
+	/**
+	 * @return ConstTypeNode
+	 */
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ConstTypeNode(new ConstExprIntegerNode((string) $this->value));
+	}
+
+}
diff --git a/src/Type/Constant/ConstantScalarToBooleanTrait.php b/src/Type/Constant/ConstantScalarToBooleanTrait.php
new file mode 100644
index 00000000..a1d3a12b
--- /dev/null
+++ b/src/Type/Constant/ConstantScalarToBooleanTrait.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PHPStan\Type\BooleanType;
+
+trait ConstantScalarToBooleanTrait
+{
+
+	public function toBoolean(): BooleanType
+	{
+		return new ConstantBooleanType((bool) $this->value);
+	}
+
+}
diff --git a/src/Type/Constant/ConstantStringType.php b/src/Type/Constant/ConstantStringType.php
new file mode 100644
index 00000000..54468587
--- /dev/null
+++ b/src/Type/Constant/ConstantStringType.php
@@ -0,0 +1,572 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use Nette\Utils\RegexpException;
+use Nette\Utils\Strings;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\Callables\FunctionCallableVariant;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\InaccessibleMethod;
+use PHPStan\Reflection\PhpVersionStaticAccessor;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\ConstantScalarTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use function addcslashes;
+use function in_array;
+use function is_float;
+use function is_int;
+use function is_numeric;
+use function key;
+use function strlen;
+use function strtolower;
+use function strtoupper;
+use function substr;
+use function substr_count;
+
+/** @api */
+class ConstantStringType extends StringType implements ConstantScalarType
+{
+
+	private const DESCRIBE_LIMIT = 20;
+
+	use ConstantScalarTypeTrait;
+	use ConstantScalarToBooleanTrait;
+
+	private ?ObjectType $objectType = null;
+
+	private ?Type $arrayKeyType = null;
+
+	/** @api */
+	public function __construct(private string $value, private bool $isClassString = false)
+	{
+		parent::__construct();
+	}
+
+	public function getValue(): string
+	{
+		return $this->value;
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [$this];
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		if ($this->isClassString) {
+			return TrinaryLogic::createYes();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		return TrinaryLogic::createFromBoolean($reflectionProvider->hasClass($this->value));
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		if ($this->isClassString()->yes()) {
+			return new ObjectType($this->value);
+		}
+
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this->getClassStringObjectType();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'string',
+			function (): string {
+				$value = $this->value;
+
+				if (!$this->isClassString) {
+					try {
+						$value = Strings::truncate($value, self::DESCRIBE_LIMIT);
+					} catch (RegexpException) {
+						$value = substr($value, 0, self::DESCRIBE_LIMIT) . "\u{2026}";
+					}
+				}
+
+				return self::export($value);
+			},
+			fn (): string => self::export($this->value),
+		);
+	}
+
+	private function export(string $value): string
+	{
+		$escapedValue = addcslashes($value, "\0..\37");
+		if ($escapedValue !== $value) {
+			return '"' . addcslashes($value, "\0..\37\\\"") . '"';
+		}
+
+		return "'" . addcslashes($value, '\\\'') . "'";
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof GenericClassStringType) {
+			$genericType = $type->getGenericType();
+			if ($genericType instanceof MixedType) {
+				return IsSuperTypeOfResult::createMaybe();
+			}
+			if ($genericType instanceof StaticType) {
+				$genericType = $genericType->getStaticObjectType();
+			}
+
+			// We are transforming constant class-string to ObjectType. But we need to filter out
+			// an uncertainty originating in possible ObjectType's class subtypes.
+			$objectType = $this->getObjectType();
+
+			// Do not use TemplateType's isSuperTypeOf handling directly because it takes ObjectType
+			// uncertainty into account.
+			if ($genericType instanceof TemplateType) {
+				$isSuperType = $genericType->getBound()->isSuperTypeOf($objectType);
+			} else {
+				$isSuperType = $genericType->isSuperTypeOf($objectType);
+			}
+
+			// Explicitly handle the uncertainty for Yes & Maybe.
+			if ($isSuperType->yes()) {
+				return IsSuperTypeOfResult::createMaybe();
+			}
+			return IsSuperTypeOfResult::createNo();
+		}
+		if ($type instanceof ClassStringType) {
+			return $this->isClassString()->yes() ? IsSuperTypeOfResult::createMaybe() : IsSuperTypeOfResult::createNo();
+		}
+
+		if ($type instanceof self) {
+			return $this->value === $type->value ? IsSuperTypeOfResult::createYes() : IsSuperTypeOfResult::createNo();
+		}
+
+		if ($type instanceof parent) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		if ($this->value === '') {
+			return TrinaryLogic::createNo();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		// 'my_function'
+		if ($reflectionProvider->hasFunction(new Name($this->value), null)) {
+			return TrinaryLogic::createYes();
+		}
+
+		// 'MyClass::myStaticFunction'
+		$matches = Strings::match($this->value, '#^([a-zA-Z_\\x7f-\\xff\\\\][a-zA-Z0-9_\\x7f-\\xff\\\\]*)::([a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*)\z#');
+		if ($matches !== null) {
+			if (!$reflectionProvider->hasClass($matches[1])) {
+				return TrinaryLogic::createMaybe();
+			}
+
+			$phpVersion = PhpVersionStaticAccessor::getInstance();
+			$classRef = $reflectionProvider->getClass($matches[1]);
+			if ($classRef->hasMethod($matches[2])) {
+				$method = $classRef->getMethod($matches[2], new OutOfClassScope());
+				if (
+					!$phpVersion->supportsCallableInstanceMethods()
+					&& !$method->isStatic()
+				) {
+					return TrinaryLogic::createNo();
+				}
+
+				return TrinaryLogic::createYes();
+			}
+
+			if (!$classRef->getNativeReflection()->isFinal()) {
+				return TrinaryLogic::createMaybe();
+			}
+
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createNo();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		if ($this->value === '') {
+			return [];
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		// 'my_function'
+		$functionName = new Name($this->value);
+		if ($reflectionProvider->hasFunction($functionName, null)) {
+			$function = $reflectionProvider->getFunction($functionName, null);
+			return FunctionCallableVariant::createFromVariants($function, $function->getVariants());
+		}
+
+		// 'MyClass::myStaticFunction'
+		$matches = Strings::match($this->value, '#^([a-zA-Z_\\x7f-\\xff\\\\][a-zA-Z0-9_\\x7f-\\xff\\\\]*)::([a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*)\z#');
+		if ($matches !== null) {
+			if (!$reflectionProvider->hasClass($matches[1])) {
+				return [new TrivialParametersAcceptor()];
+			}
+
+			$classReflection = $reflectionProvider->getClass($matches[1]);
+			if ($classReflection->hasMethod($matches[2])) {
+				$method = $classReflection->getMethod($matches[2], $scope);
+				if (!$scope->canCallMethod($method)) {
+					return [new InaccessibleMethod($method)];
+				}
+
+				return FunctionCallableVariant::createFromVariants($method, $method->getVariants());
+			}
+
+			if (!$classReflection->getNativeReflection()->isFinal()) {
+				return [new TrivialParametersAcceptor()];
+			}
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+	public function toNumber(): Type
+	{
+		if (is_numeric($this->value)) {
+			$value = $this->value;
+			$value = +$value;
+			if (is_float($value)) {
+				return new ConstantFloatType($value);
+			}
+
+			return new ConstantIntegerType($value);
+		}
+
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ConstantIntegerType((int) $this->value);
+	}
+
+	public function toFloat(): Type
+	{
+		return new ConstantFloatType((float) $this->value);
+	}
+
+	public function toArrayKey(): Type
+	{
+		if ($this->arrayKeyType !== null) {
+			return $this->arrayKeyType;
+		}
+
+		/** @var int|string $offsetValue */
+		$offsetValue = key([$this->value => null]);
+		return $this->arrayKeyType = is_int($offsetValue) ? new ConstantIntegerType($offsetValue) : new ConstantStringType($offsetValue);
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(is_numeric($this->getValue()));
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean($this->getValue() !== '');
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(!in_array($this->getValue(), ['', '0'], true));
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(strtolower($this->value) === $this->value);
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createFromBoolean(strtoupper($this->value) === $this->value);
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($offsetType->isInteger()->yes()) {
+			$strlen = strlen($this->value);
+			$strLenType = IntegerRangeType::fromInterval(-$strlen, $strlen - 1);
+			return $strLenType->isSuperTypeOf($offsetType)->result;
+		}
+
+		return parent::hasOffsetValueType($offsetType);
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($offsetType->isInteger()->yes()) {
+			$strlen = strlen($this->value);
+			$strLenType = IntegerRangeType::fromInterval(-$strlen, $strlen - 1);
+
+			if ($offsetType instanceof ConstantIntegerType) {
+				if ($strLenType->isSuperTypeOf($offsetType)->yes()) {
+					return new self($this->value[$offsetType->getValue()]);
+				}
+
+				return new ErrorType();
+			}
+
+			$intersected = TypeCombinator::intersect($strLenType, $offsetType);
+			if ($intersected instanceof IntegerRangeType) {
+				$finiteTypes = $intersected->getFiniteTypes();
+				if ($finiteTypes === []) {
+					return parent::getOffsetValueType($offsetType);
+				}
+
+				$chars = [];
+				foreach ($finiteTypes as $constantInteger) {
+					$chars[] = new self($this->value[$constantInteger->getValue()]);
+				}
+				if (!$strLenType->isSuperTypeOf($offsetType)->yes()) {
+					$chars[] = new self('');
+				}
+
+				return TypeCombinator::union(...$chars);
+			}
+		}
+
+		return parent::getOffsetValueType($offsetType);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$valueStringType = $valueType->toString();
+		if ($valueStringType instanceof ErrorType) {
+			return new ErrorType();
+		}
+		if (
+			$offsetType instanceof ConstantIntegerType
+			&& $valueStringType instanceof ConstantStringType
+		) {
+			$value = $this->value;
+			$offsetValue = $offsetType->getValue();
+			if ($offsetValue < 0) {
+				return new ErrorType();
+			}
+			$stringValue = $valueStringType->getValue();
+			if (strlen($stringValue) !== 1) {
+				return new ErrorType();
+			}
+			$value[$offsetValue] = $stringValue;
+
+			return new self($value);
+		}
+
+		return parent::setOffsetValueType($offsetType, $valueType);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return parent::setOffsetValueType($offsetType, $valueType);
+	}
+
+	public function append(self $otherString): self
+	{
+		return new self($this->getValue() . $otherString->getValue());
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		if ($this->isClassString) {
+			if ($precision->isMoreSpecific()) {
+				return new ClassStringType();
+			}
+
+			return new StringType();
+		}
+
+		if ($this->getValue() !== '' && $precision->isMoreSpecific()) {
+			$accessories = [
+				new StringType(),
+				new AccessoryLiteralStringType(),
+			];
+
+			if (is_numeric($this->getValue())) {
+				$accessories[] = new AccessoryNumericStringType();
+			}
+
+			if ($this->getValue() !== '0') {
+				$accessories[] = new AccessoryNonFalsyStringType();
+			} else {
+				$accessories[] = new AccessoryNonEmptyStringType();
+			}
+
+			if (strtolower($this->getValue()) === $this->getValue()) {
+				$accessories[] = new AccessoryLowercaseStringType();
+			}
+
+			if (strtoupper($this->getValue()) === $this->getValue()) {
+				$accessories[] = new AccessoryUppercaseStringType();
+			}
+
+			return new IntersectionType($accessories);
+		}
+
+		if ($precision->isMoreSpecific()) {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryLiteralStringType(),
+			]);
+		}
+
+		return new StringType();
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new ConstantBooleanType(true),
+			IntegerRangeType::createAllGreaterThanOrEqualTo((float) $this->value),
+		];
+
+		if ($this->value === '') {
+			$subtractedTypes[] = new NullType();
+			$subtractedTypes[] = new StringType();
+		}
+
+		if (!(bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(false);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			IntegerRangeType::createAllGreaterThan((float) $this->value),
+		];
+
+		if (!(bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(true);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new ConstantBooleanType(false),
+			IntegerRangeType::createAllSmallerThanOrEqualTo((float) $this->value),
+		];
+
+		if ((bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(true);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			IntegerRangeType::createAllSmallerThan((float) $this->value),
+		];
+
+		if ((bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(false);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->isClassString();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->getObjectType()->hasConstant($constantName);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return $this->getObjectType()->getConstant($constantName);
+	}
+
+	private function getObjectType(): ObjectType
+	{
+		return $this->objectType ??= new ObjectType($this->value);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		if (substr_count($this->value, "\n") > 0) {
+			return $this->generalize(GeneralizePrecision::moreSpecific())->toPhpDocNode();
+		}
+
+		return new ConstTypeNode(new ConstExprStringNode($this->value, ConstExprStringNode::SINGLE_QUOTED));
+	}
+
+}
diff --git a/src/Type/Constant/OversizedArrayBuilder.php b/src/Type/Constant/OversizedArrayBuilder.php
new file mode 100644
index 00000000..23e0c60f
--- /dev/null
+++ b/src/Type/Constant/OversizedArrayBuilder.php
@@ -0,0 +1,102 @@
+<?php 
+
+namespace PHPStan\Type\Constant;
+return;
+
+use PhpParser\Node\ArrayItem;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Array_;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\VerbosityLevel;
+use function array_splice;
+use function array_values;
+use function count;
+
+final class OversizedArrayBuilder
+{
+
+	/**
+	 * @param callable(Expr): Type $getTypeCallback
+	 */
+	public function build(Array_ $expr, callable $getTypeCallback): Type
+	{
+		$isList = true;
+		$valueTypes = [];
+		$keyTypes = [];
+		$nextAutoIndex = 0;
+		$items = $expr->items;
+		for ($i = 0; $i < count($items); $i++) {
+			$item = $items[$i];
+			if (!$item->unpack) {
+				continue;
+			}
+
+			$valueType = $getTypeCallback($item->value);
+			if ($valueType instanceof ConstantArrayType) {
+				array_splice($items, $i, 1);
+				foreach ($valueType->getKeyTypes() as $j => $innerKeyType) {
+					$innerValueType = $valueType->getValueTypes()[$j];
+					if ($innerKeyType->isString()->no()) {
+						$keyExpr = null;
+					} else {
+						$keyExpr = new TypeExpr($innerKeyType);
+					}
+					array_splice($items, $i++, 0, [new ArrayItem(
+						new TypeExpr($innerValueType),
+						$keyExpr,
+					)]);
+				}
+			} else {
+				array_splice($items, $i, 1, [new ArrayItem(
+					new TypeExpr($valueType->getIterableValueType()),
+					new TypeExpr($valueType->getIterableKeyType()),
+				)]);
+			}
+		}
+		foreach ($items as $item) {
+			if ($item->unpack) {
+				throw new ShouldNotHappenException();
+			}
+			if ($item->key !== null) {
+				$itemKeyType = $getTypeCallback($item->key);
+				if (!$itemKeyType instanceof ConstantIntegerType) {
+					$isList = false;
+				} elseif ($itemKeyType->getValue() !== $nextAutoIndex) {
+					$isList = false;
+					$nextAutoIndex = $itemKeyType->getValue() + 1;
+				} else {
+					$nextAutoIndex++;
+				}
+			} else {
+				$itemKeyType = new ConstantIntegerType($nextAutoIndex);
+				$nextAutoIndex++;
+			}
+
+			$generalizedKeyType = $itemKeyType->generalize(GeneralizePrecision::moreSpecific());
+			$keyTypes[$generalizedKeyType->describe(VerbosityLevel::precise())] = $generalizedKeyType;
+
+			$itemValueType = $getTypeCallback($item->value);
+			$generalizedValueType = $itemValueType->generalize(GeneralizePrecision::moreSpecific());
+			$valueTypes[$generalizedValueType->describe(VerbosityLevel::precise())] = $generalizedValueType;
+		}
+
+		$keyType = TypeCombinator::union(...array_values($keyTypes));
+		$valueType = TypeCombinator::union(...array_values($valueTypes));
+
+		$arrayType = new ArrayType($keyType, $valueType);
+		if ($isList) {
+			$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+		}
+
+		return TypeCombinator::intersect($arrayType, new NonEmptyArrayType(), new OversizedArrayType());
+	}
+
+}
diff --git a/src/Type/ConstantScalarType.php b/src/Type/ConstantScalarType.php
new file mode 100644
index 00000000..cf311ed0
--- /dev/null
+++ b/src/Type/ConstantScalarType.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/** @api */
+interface ConstantScalarType extends Type
+{
+
+	/**
+	 * @return int|float|string|bool|null
+	 */
+	public function getValue();
+
+}
diff --git a/src/Type/ConstantTypeHelper.php b/src/Type/ConstantTypeHelper.php
new file mode 100644
index 00000000..dbf5fbb6
--- /dev/null
+++ b/src/Type/ConstantTypeHelper.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use UnitEnum;
+use function count;
+use function function_exists;
+use function get_class;
+use function is_array;
+use function is_bool;
+use function is_float;
+use function is_int;
+use function is_nan;
+use function is_object;
+use function is_string;
+
+/**
+ * @api
+ */
+final class ConstantTypeHelper
+{
+
+	/**
+	 * @param mixed $value
+	 */
+	public static function getTypeFromValue($value): Type
+	{
+		if (is_int($value)) {
+			return new ConstantIntegerType($value);
+		} elseif (is_float($value)) {
+			if (is_nan($value)) {
+				return new MixedType();
+			}
+			return new ConstantFloatType($value);
+		} elseif (is_bool($value)) {
+			return new ConstantBooleanType($value);
+		} elseif ($value === null) {
+			return new NullType();
+		} elseif (is_string($value)) {
+			return new ConstantStringType($value);
+		} elseif (is_array($value)) {
+			$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+			if (count($value) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+				$arrayBuilder->degradeToGeneralArray(true);
+			}
+			foreach ($value as $k => $v) {
+				$arrayBuilder->setOffsetValueType(self::getTypeFromValue($k), self::getTypeFromValue($v));
+			}
+			return $arrayBuilder->getArray();
+		} elseif (is_object($value)) {
+			$class = get_class($value);
+			/** phpcs:disable SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly.ReferenceViaFullyQualifiedName */
+			if (function_exists('enum_exists') && \enum_exists($class)) {
+				/** @var UnitEnum $value */
+				return new EnumCaseObjectType($class, $value->name);
+			}
+			/** phpcs:enable */
+
+			return new ObjectType(get_class($value));
+		}
+
+		return new MixedType();
+	}
+
+}
diff --git a/src/Type/DirectTypeAliasResolverProvider.php b/src/Type/DirectTypeAliasResolverProvider.php
new file mode 100644
index 00000000..7e60c904
--- /dev/null
+++ b/src/Type/DirectTypeAliasResolverProvider.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class DirectTypeAliasResolverProvider implements TypeAliasResolverProvider
+{
+
+	public function __construct(private TypeAliasResolver $typeAliasResolver)
+	{
+	}
+
+	public function getTypeAliasResolver(): TypeAliasResolver
+	{
+		return $this->typeAliasResolver;
+	}
+
+}
diff --git a/src/Type/DynamicFunctionReturnTypeExtension.php b/src/Type/DynamicFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..65dcff8d
--- /dev/null
+++ b/src/Type/DynamicFunctionReturnTypeExtension.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+
+/**
+ * This is the interface dynamic return type extensions implement for functions.
+ *
+ * To register it in the configuration file use the `phpstan.broker.dynamicFunctionReturnTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.dynamicFunctionReturnTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-return-type-extensions
+ *
+ * @api
+ */
+interface DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool;
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/DynamicFunctionThrowTypeExtension.php b/src/Type/DynamicFunctionThrowTypeExtension.php
new file mode 100644
index 00000000..f92a1e82
--- /dev/null
+++ b/src/Type/DynamicFunctionThrowTypeExtension.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+
+/**
+ * This is the interface dynamic throw type extensions implement for functions.
+ *
+ * To register it in the configuration file use the `phpstan.dynamicFunctionThrowTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.dynamicFunctionThrowTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-throw-type-extensions
+ *
+ * @api
+ */
+interface DynamicFunctionThrowTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool;
+
+	public function getThrowTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/DynamicMethodReturnTypeExtension.php b/src/Type/DynamicMethodReturnTypeExtension.php
new file mode 100644
index 00000000..25a1be70
--- /dev/null
+++ b/src/Type/DynamicMethodReturnTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface dynamic return type extensions implement for non-static methods.
+ *
+ * To register it in the configuration file use the `phpstan.broker.dynamicMethodReturnTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.dynamicMethodReturnTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-return-type-extensions
+ *
+ * @api
+ */
+interface DynamicMethodReturnTypeExtension
+{
+
+	/** @return class-string */
+	public function getClass(): string;
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool;
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/DynamicMethodThrowTypeExtension.php b/src/Type/DynamicMethodThrowTypeExtension.php
new file mode 100644
index 00000000..994450dc
--- /dev/null
+++ b/src/Type/DynamicMethodThrowTypeExtension.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface dynamic throw type extensions implement for non-static methods.
+ *
+ * To register it in the configuration file use the `phpstan.dynamicMethodThrowTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.dynamicMethodThrowTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-throw-type-extensions
+ *
+ * @api
+ */
+interface DynamicMethodThrowTypeExtension
+{
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool;
+
+	public function getThrowTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/DynamicReturnTypeExtensionRegistry.php b/src/Type/DynamicReturnTypeExtensionRegistry.php
new file mode 100644
index 00000000..ef80c98f
--- /dev/null
+++ b/src/Type/DynamicReturnTypeExtensionRegistry.php
@@ -0,0 +1,97 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Reflection\ReflectionProvider;
+use function array_merge;
+use function strtolower;
+
+final class DynamicReturnTypeExtensionRegistry
+{
+
+	/** @var DynamicMethodReturnTypeExtension[][]|null */
+	private ?array $dynamicMethodReturnTypeExtensionsByClass = null;
+
+	/** @var DynamicStaticMethodReturnTypeExtension[][]|null */
+	private ?array $dynamicStaticMethodReturnTypeExtensionsByClass = null;
+
+	/**
+	 * @param DynamicMethodReturnTypeExtension[] $dynamicMethodReturnTypeExtensions
+	 * @param DynamicStaticMethodReturnTypeExtension[] $dynamicStaticMethodReturnTypeExtensions
+	 * @param DynamicFunctionReturnTypeExtension[] $dynamicFunctionReturnTypeExtensions
+	 */
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private array $dynamicMethodReturnTypeExtensions,
+		private array $dynamicStaticMethodReturnTypeExtensions,
+		private array $dynamicFunctionReturnTypeExtensions,
+	)
+	{
+	}
+
+	/**
+	 * @return DynamicMethodReturnTypeExtension[]
+	 */
+	public function getDynamicMethodReturnTypeExtensionsForClass(string $className): array
+	{
+		if ($this->dynamicMethodReturnTypeExtensionsByClass === null) {
+			$byClass = [];
+			foreach ($this->dynamicMethodReturnTypeExtensions as $extension) {
+				$byClass[strtolower($extension->getClass())][] = $extension;
+			}
+
+			$this->dynamicMethodReturnTypeExtensionsByClass = $byClass;
+		}
+		return $this->getDynamicExtensionsForType($this->dynamicMethodReturnTypeExtensionsByClass, $className);
+	}
+
+	/**
+	 * @return DynamicStaticMethodReturnTypeExtension[]
+	 */
+	public function getDynamicStaticMethodReturnTypeExtensionsForClass(string $className): array
+	{
+		if ($this->dynamicStaticMethodReturnTypeExtensionsByClass === null) {
+			$byClass = [];
+			foreach ($this->dynamicStaticMethodReturnTypeExtensions as $extension) {
+				$byClass[strtolower($extension->getClass())][] = $extension;
+			}
+
+			$this->dynamicStaticMethodReturnTypeExtensionsByClass = $byClass;
+		}
+		return $this->getDynamicExtensionsForType($this->dynamicStaticMethodReturnTypeExtensionsByClass, $className);
+	}
+
+	/**
+	 * @param DynamicMethodReturnTypeExtension[][]|DynamicStaticMethodReturnTypeExtension[][] $extensions
+	 * @return mixed[]
+	 */
+	private function getDynamicExtensionsForType(array $extensions, string $className): array
+	{
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return [];
+		}
+
+		$extensionsForClass = [[]];
+		$class = $this->reflectionProvider->getClass($className);
+		foreach (array_merge([$className], $class->getParentClassesNames(), $class->getNativeReflection()->getInterfaceNames()) as $extensionClassName) {
+			$extensionClassName = strtolower($extensionClassName);
+			if (!isset($extensions[$extensionClassName])) {
+				continue;
+			}
+
+			$extensionsForClass[] = $extensions[$extensionClassName];
+		}
+
+		return array_merge(...$extensionsForClass);
+	}
+
+	/**
+	 * @return DynamicFunctionReturnTypeExtension[]
+	 */
+	public function getDynamicFunctionReturnTypeExtensions(): array
+	{
+		return $this->dynamicFunctionReturnTypeExtensions;
+	}
+
+}
diff --git a/src/Type/DynamicStaticMethodReturnTypeExtension.php b/src/Type/DynamicStaticMethodReturnTypeExtension.php
new file mode 100644
index 00000000..390a349e
--- /dev/null
+++ b/src/Type/DynamicStaticMethodReturnTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface dynamic return type extensions implement for static methods.
+ *
+ * To register it in the configuration file use the `phpstan.broker.dynamicStaticMethodReturnTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.dynamicStaticMethodReturnTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-return-type-extensions
+ *
+ * @api
+ */
+interface DynamicStaticMethodReturnTypeExtension
+{
+
+	/** @return class-string */
+	public function getClass(): string;
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool;
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/DynamicStaticMethodThrowTypeExtension.php b/src/Type/DynamicStaticMethodThrowTypeExtension.php
new file mode 100644
index 00000000..85474e47
--- /dev/null
+++ b/src/Type/DynamicStaticMethodThrowTypeExtension.php
@@ -0,0 +1,34 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface dynamic throw type extensions implement for static methods.
+ *
+ * To register it in the configuration file use the `phpstan.dynamicStaticMethodThrowTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.dynamicStaticMethodThrowTypeExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/dynamic-throw-type-extensions
+ *
+ * @api
+ */
+interface DynamicStaticMethodThrowTypeExtension
+{
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool;
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/Enum/EnumCaseObjectType.php b/src/Type/Enum/EnumCaseObjectType.php
new file mode 100644
index 00000000..6e4fdccf
--- /dev/null
+++ b/src/Type/Enum/EnumCaseObjectType.php
@@ -0,0 +1,205 @@
+<?php 
+
+namespace PHPStan\Type\Enum;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstFetchNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\EnumPropertyReflection;
+use PHPStan\Reflection\Php\EnumUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\SubtractableType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/** @api */
+class EnumCaseObjectType extends ObjectType
+{
+
+	/** @api */
+	public function __construct(
+		string $className,
+		private string $enumCaseName,
+		?ClassReflection $classReflection = null,
+	)
+	{
+		parent::__construct($className, null, $classReflection);
+	}
+
+	public function getEnumCaseName(): string
+	{
+		return $this->enumCaseName;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$parent = parent::describe($level);
+
+		return sprintf('%s::%s', $parent, $this->enumCaseName);
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		return $this->enumCaseName === $type->enumCaseName &&
+			$this->getClassName() === $type->getClassName();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSuperTypeOf($type)->toAcceptsResult();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createFromBoolean(
+				$this->enumCaseName === $type->enumCaseName && $this->getClassName() === $type->getClassName(),
+			);
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if (
+			$type instanceof SubtractableType
+			&& $type->getSubtractedType() !== null
+		) {
+			$isSuperType = $type->getSubtractedType()->isSuperTypeOf($this);
+			if ($isSuperType->yes()) {
+				return IsSuperTypeOfResult::createNo();
+			}
+		}
+
+		$parent = new parent($this->getClassName(), $this->getSubtractedType(), $this->getClassReflection());
+
+		return $parent->isSuperTypeOf($type)->and(IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function subtract(Type $type): Type
+	{
+		return $this;
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		return $this;
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		return $this;
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		return null;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($this->isSuperTypeOf($typeToRemove)->yes()) {
+			return $this->subtract($typeToRemove);
+		}
+
+		return null;
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return parent::getUnresolvedPropertyPrototype($propertyName, $scope);
+
+		}
+		if ($propertyName === 'name') {
+			return new EnumUnresolvedPropertyPrototypeReflection(
+				new EnumPropertyReflection($classReflection, new ConstantStringType($this->enumCaseName)),
+			);
+		}
+
+		if ($classReflection->isBackedEnum() && $propertyName === 'value') {
+			if ($classReflection->hasEnumCase($this->enumCaseName)) {
+				$enumCase = $classReflection->getEnumCase($this->enumCaseName);
+				$valueType = $enumCase->getBackingValueType();
+				if ($valueType === null) {
+					throw new ShouldNotHappenException();
+				}
+
+				return new EnumUnresolvedPropertyPrototypeReflection(
+					new EnumPropertyReflection($classReflection, $valueType),
+				);
+			}
+		}
+
+		return parent::getUnresolvedPropertyPrototype($propertyName, $scope);
+	}
+
+	public function getBackingValueType(): ?Type
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return null;
+		}
+
+		if (!$classReflection->isBackedEnum()) {
+			return null;
+		}
+
+		if ($classReflection->hasEnumCase($this->enumCaseName)) {
+			$enumCase = $classReflection->getEnumCase($this->enumCaseName);
+
+			return $enumCase->getBackingValueType();
+		}
+
+		return null;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new parent($this->getClassName(), null, $this->getClassReflection());
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [$this];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ConstTypeNode(
+			new ConstFetchNode(
+				$this->getClassName(),
+				$this->getEnumCaseName(),
+			),
+		);
+	}
+
+}
diff --git a/src/Type/ErrorType.php b/src/Type/ErrorType.php
new file mode 100644
index 00000000..442cb0a1
--- /dev/null
+++ b/src/Type/ErrorType.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/** @api */
+class ErrorType extends MixedType
+{
+
+	/** @api */
+	public function __construct()
+	{
+		parent::__construct();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			fn (): string => parent::describe($level),
+			fn (): string => parent::describe($level),
+			static fn (): string => '*ERROR*',
+		);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function subtract(Type $type): Type
+	{
+		return new self();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+}
diff --git a/src/Type/ExponentiateHelper.php b/src/Type/ExponentiateHelper.php
new file mode 100644
index 00000000..6a3341df
--- /dev/null
+++ b/src/Type/ExponentiateHelper.php
@@ -0,0 +1,132 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use function is_float;
+use function is_int;
+use function is_numeric;
+use function is_string;
+use function pow;
+
+final class ExponentiateHelper
+{
+
+	public static function exponentiate(Type $base, Type $exponent): Type
+	{
+		if ($exponent instanceof UnionType) {
+			$results = [];
+			foreach ($exponent->getTypes() as $unionType) {
+				$results[] = self::exponentiate($base, $unionType);
+			}
+			return TypeCombinator::union(...$results);
+		}
+
+		if ($exponent instanceof NeverType) {
+			return new NeverType();
+		}
+
+		$allowedExponentTypes = new UnionType([
+			new IntegerType(),
+			new FloatType(),
+			new StringType(),
+			new BooleanType(),
+			new NullType(),
+		]);
+		if (!$allowedExponentTypes->isSuperTypeOf($exponent)->yes()) {
+			return new ErrorType();
+		}
+
+		if ($base instanceof ConstantScalarType) {
+			$result = self::exponentiateConstantScalar($base, $exponent);
+			if ($result !== null) {
+				return $result;
+			}
+		}
+
+		// exponentiation of a float, stays a float
+		$isFloatBase = $base->isFloat()->yes();
+
+		$isLooseZero = (new ConstantIntegerType(0))->isSuperTypeOf($exponent->toNumber());
+		if ($isLooseZero->yes()) {
+			if ($isFloatBase) {
+				return new ConstantFloatType(1);
+			}
+
+			return new ConstantIntegerType(1);
+		}
+
+		$isLooseOne = (new ConstantIntegerType(1))->isSuperTypeOf($exponent->toNumber());
+		if ($isLooseOne->yes()) {
+			$possibleResults = new UnionType([
+				new FloatType(),
+				new IntegerType(),
+			]);
+
+			if ($possibleResults->isSuperTypeOf($base)->yes()) {
+				return $base;
+			}
+		}
+
+		if ($isFloatBase) {
+			return new FloatType();
+		}
+
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	private static function exponentiateConstantScalar(ConstantScalarType $base, Type $exponent): ?Type
+	{
+		if ($exponent instanceof IntegerRangeType) {
+			$min = null;
+			$max = null;
+			if ($exponent->getMin() !== null) {
+				$min = self::pow($base->getValue(), $exponent->getMin());
+				if ($min === null) {
+					return new ErrorType();
+				}
+			}
+			if ($exponent->getMax() !== null) {
+				$max = self::pow($base->getValue(), $exponent->getMax());
+				if ($max === null) {
+					return new ErrorType();
+				}
+			}
+
+			if (!is_float($min) && !is_float($max)) {
+				return IntegerRangeType::fromInterval($min, $max);
+			}
+		}
+
+		if ($exponent instanceof ConstantScalarType) {
+			$result = self::pow($base->getValue(), $exponent->getValue());
+			if ($result === null) {
+				return new ErrorType();
+			}
+
+			if (is_int($result)) {
+				return new ConstantIntegerType($result);
+			}
+			return new ConstantFloatType($result);
+		}
+
+		return null;
+	}
+
+	private static function pow(mixed $base, mixed $exp): float|int|null
+	{
+		if (is_string($base) && !is_numeric($base)) {
+			return null;
+		}
+		if (is_string($exp) && !is_numeric($exp)) {
+			return null;
+		}
+		return pow($base, $exp);
+	}
+
+}
diff --git a/src/Type/ExpressionTypeResolverExtension.php b/src/Type/ExpressionTypeResolverExtension.php
new file mode 100644
index 00000000..c1ce9547
--- /dev/null
+++ b/src/Type/ExpressionTypeResolverExtension.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+
+/**
+ * To register it in the configuration file use the `phpstan.broker.expressionTypeResolverExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.expressionTypeResolverExtension
+ * ```
+ *
+ * You should return null in your extension if you don't care about given Expr.
+ *
+ * @api
+ */
+interface ExpressionTypeResolverExtension
+{
+
+	public function getType(Expr $expr, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/ExpressionTypeResolverExtensionRegistry.php b/src/Type/ExpressionTypeResolverExtensionRegistry.php
new file mode 100644
index 00000000..c2061595
--- /dev/null
+++ b/src/Type/ExpressionTypeResolverExtensionRegistry.php
@@ -0,0 +1,26 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class ExpressionTypeResolverExtensionRegistry
+{
+
+	/**
+	 * @param array<ExpressionTypeResolverExtension> $extensions
+	 */
+	public function __construct(
+		private array $extensions,
+	)
+	{
+	}
+
+	/**
+	 * @return array<ExpressionTypeResolverExtension>
+	 */
+	public function getExtensions(): array
+	{
+		return $this->extensions;
+	}
+
+}
diff --git a/src/Type/FileTypeMapper.php b/src/Type/FileTypeMapper.php
new file mode 100644
index 00000000..ddabd6d7
--- /dev/null
+++ b/src/Type/FileTypeMapper.php
@@ -0,0 +1,833 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use Closure;
+use PhpParser\Node;
+use PHPStan\Analyser\NameScope;
+use PHPStan\BetterReflection\Util\GetLastDocComment;
+use PHPStan\Broker\AnonymousClassNameHelper;
+use PHPStan\File\FileHelper;
+use PHPStan\Parser\Parser;
+use PHPStan\PhpDoc\PhpDocNodeResolver;
+use PHPStan\PhpDoc\PhpDocStringResolver;
+use PHPStan\PhpDoc\ResolvedPhpDocBlock;
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocNode;
+use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use function array_key_exists;
+use function array_keys;
+use function array_map;
+use function array_merge;
+use function array_pop;
+use function array_slice;
+use function count;
+use function is_array;
+use function is_callable;
+use function is_file;
+use function ltrim;
+use function md5;
+use function sprintf;
+use function str_contains;
+use function strtolower;
+
+final class FileTypeMapper
+{
+
+	private const SKIP_NODE = 1;
+	private const POP_TYPE_MAP_STACK = 2;
+
+	/** @var NameScope[][] */
+	private array $memoryCache = [];
+
+	private int $memoryCacheCount = 0;
+
+	/** @var (true|callable(): NameScope|NameScope)[][] */
+	private array $inProcess = [];
+
+	/** @var array<string, ResolvedPhpDocBlock> */
+	private array $resolvedPhpDocBlockCache = [];
+
+	private int $resolvedPhpDocBlockCacheCount = 0;
+
+	public function __construct(
+		private ReflectionProviderProvider $reflectionProviderProvider,
+		private Parser $phpParser,
+		private PhpDocStringResolver $phpDocStringResolver,
+		private PhpDocNodeResolver $phpDocNodeResolver,
+		private AnonymousClassNameHelper $anonymousClassNameHelper,
+		private FileHelper $fileHelper,
+	)
+	{
+	}
+
+	/** @api */
+	public function getResolvedPhpDoc(
+		?string $fileName,
+		?string $className,
+		?string $traitName,
+		?string $functionName,
+		string $docComment,
+	): ResolvedPhpDocBlock
+	{
+		if ($className === null && $traitName !== null) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($docComment === '') {
+			return ResolvedPhpDocBlock::createEmpty();
+		}
+
+		if ($fileName !== null) {
+			$fileName = $this->fileHelper->normalizePath($fileName);
+		}
+
+		$nameScopeKey = $this->getNameScopeKey($fileName, $className, $traitName, $functionName);
+		$phpDocKey = md5(sprintf('%s-%s', $nameScopeKey, $docComment));
+		if (isset($this->resolvedPhpDocBlockCache[$phpDocKey])) {
+			return $this->resolvedPhpDocBlockCache[$phpDocKey];
+		}
+
+		if ($fileName === null) {
+			return $this->createResolvedPhpDocBlock($phpDocKey, new NameScope(null, []), $docComment, null);
+		}
+
+		$nameScopeMap = [];
+
+		if (!isset($this->inProcess[$fileName])) {
+			$nameScopeMap = $this->getNameScopeMap($fileName);
+		}
+
+		if (isset($nameScopeMap[$nameScopeKey])) {
+			return $this->createResolvedPhpDocBlock($phpDocKey, $nameScopeMap[$nameScopeKey], $docComment, $fileName);
+		}
+
+		if (!isset($this->inProcess[$fileName][$nameScopeKey])) { // wrong $fileName due to traits
+			return ResolvedPhpDocBlock::createEmpty();
+		}
+
+		if ($this->inProcess[$fileName][$nameScopeKey] === true) { // PHPDoc has cyclic dependency
+			return ResolvedPhpDocBlock::createEmpty();
+		}
+
+		if (is_callable($this->inProcess[$fileName][$nameScopeKey])) {
+			$resolveCallback = $this->inProcess[$fileName][$nameScopeKey];
+			$this->inProcess[$fileName][$nameScopeKey] = true;
+			$this->inProcess[$fileName][$nameScopeKey] = $resolveCallback();
+		}
+
+		return $this->createResolvedPhpDocBlock($phpDocKey, $this->inProcess[$fileName][$nameScopeKey], $docComment, $fileName);
+	}
+
+	private function createResolvedPhpDocBlock(string $phpDocKey, NameScope $nameScope, string $phpDocString, ?string $fileName): ResolvedPhpDocBlock
+	{
+		$phpDocNode = $this->phpDocStringResolver->resolve($phpDocString);
+		if ($this->resolvedPhpDocBlockCacheCount >= 2048) {
+			$this->resolvedPhpDocBlockCache = array_slice(
+				$this->resolvedPhpDocBlockCache,
+				1,
+				null,
+				true,
+			);
+
+			$this->resolvedPhpDocBlockCacheCount--;
+		}
+
+		$templateTypeMap = $nameScope->getTemplateTypeMap();
+		$phpDocTemplateTypes = [];
+		$templateTags = $this->phpDocNodeResolver->resolveTemplateTags($phpDocNode, $nameScope);
+		foreach (array_keys($templateTags) as $name) {
+			$templateType = $templateTypeMap->getType($name);
+			if ($templateType === null) {
+				continue;
+			}
+			$phpDocTemplateTypes[$name] = $templateType;
+		}
+
+		$this->resolvedPhpDocBlockCache[$phpDocKey] = ResolvedPhpDocBlock::create(
+			$phpDocNode,
+			$phpDocString,
+			$fileName,
+			$nameScope,
+			new TemplateTypeMap($phpDocTemplateTypes),
+			$templateTags,
+			$this->phpDocNodeResolver,
+			$this->reflectionProviderProvider->getReflectionProvider(),
+		);
+		$this->resolvedPhpDocBlockCacheCount++;
+
+		return $this->resolvedPhpDocBlockCache[$phpDocKey];
+	}
+
+	/**
+	 * @return NameScope[]
+	 */
+	private function getNameScopeMap(string $fileName): array
+	{
+		if (!isset($this->memoryCache[$fileName])) {
+			$map = $this->createResolvedPhpDocMap($fileName);
+			if ($this->memoryCacheCount >= 2048) {
+				$this->memoryCache = array_slice(
+					$this->memoryCache,
+					1,
+					null,
+					true,
+				);
+				$this->memoryCacheCount--;
+			}
+
+			$this->memoryCache[$fileName] = $map;
+			$this->memoryCacheCount++;
+		}
+
+		return $this->memoryCache[$fileName];
+	}
+
+	/**
+	 * @return NameScope[]
+	 */
+	private function createResolvedPhpDocMap(string $fileName): array
+	{
+		$phpDocNodeMap = $this->createPhpDocNodeMap($fileName, null, $fileName, [], $fileName);
+		$nameScopeMap = $this->createNameScopeMap($fileName, null, null, [], $fileName, $phpDocNodeMap);
+		$resolvedNameScopeMap = [];
+
+		try {
+			$this->inProcess[$fileName] = $nameScopeMap;
+
+			foreach ($nameScopeMap as $nameScopeKey => $resolveCallback) {
+				$this->inProcess[$fileName][$nameScopeKey] = true;
+				$this->inProcess[$fileName][$nameScopeKey] = $data = $resolveCallback();
+				$resolvedNameScopeMap[$nameScopeKey] = $data;
+			}
+
+		} finally {
+			unset($this->inProcess[$fileName]);
+		}
+
+		return $resolvedNameScopeMap;
+	}
+
+	/**
+	 * @param array<string, string> $traitMethodAliases
+	 * @return array<string, PhpDocNode>
+	 */
+	private function createPhpDocNodeMap(string $fileName, ?string $lookForTrait, ?string $traitUseClass, array $traitMethodAliases, string $originalClassFileName): array
+	{
+		/** @var array<string, PhpDocNode> $phpDocNodeMap */
+		$phpDocNodeMap = [];
+
+		/** @var string[] $classStack */
+		$classStack = [];
+		if ($lookForTrait !== null && $traitUseClass !== null) {
+			$classStack[] = $traitUseClass;
+		}
+		$namespace = null;
+
+		$traitFound = false;
+
+		/** @var array<string|null> $functionStack */
+		$functionStack = [];
+		$this->processNodes(
+			$this->phpParser->parseFile($fileName),
+			function (Node $node) use ($fileName, $lookForTrait, &$traitFound, $traitMethodAliases, $originalClassFileName, &$phpDocNodeMap, &$classStack, &$namespace, &$functionStack): ?int {
+				if ($node instanceof Node\Stmt\ClassLike) {
+					if ($traitFound && $fileName === $originalClassFileName) {
+						return self::SKIP_NODE;
+					}
+
+					if ($lookForTrait !== null && !$traitFound) {
+						if (!$node instanceof Node\Stmt\Trait_) {
+							return self::SKIP_NODE;
+						}
+						if ((string) $node->namespacedName !== $lookForTrait) {
+							return self::SKIP_NODE;
+						}
+
+						$traitFound = true;
+						$functionStack[] = null;
+					} else {
+						if ($node->name === null) {
+							if (!$node instanceof Node\Stmt\Class_) {
+								throw new ShouldNotHappenException();
+							}
+
+							$className = $this->anonymousClassNameHelper->getAnonymousClassName($node, $fileName);
+						} elseif ($node instanceof Node\Stmt\Class_ && $node->isAnonymous()) {
+							$className = $node->name->name;
+						} else {
+							if ($traitFound) {
+								return self::SKIP_NODE;
+							}
+							$className = ltrim(sprintf('%s\\%s', $namespace, $node->name->name), '\\');
+						}
+						$classStack[] = $className;
+						$functionStack[] = null;
+					}
+				} elseif ($node instanceof Node\Stmt\ClassMethod) {
+					if (array_key_exists($node->name->name, $traitMethodAliases)) {
+						$functionStack[] = $traitMethodAliases[$node->name->name];
+					} else {
+						$functionStack[] = $node->name->name;
+					}
+				} elseif ($node instanceof Node\Stmt\Function_) {
+					$functionStack[] = ltrim(sprintf('%s\\%s', $namespace, $node->name->name), '\\');
+				} elseif ($node instanceof Node\PropertyHook) {
+					$propertyName = $node->getAttribute('propertyName');
+					if ($propertyName !== null) {
+						$functionStack[] = sprintf('$%s::%s', $propertyName, $node->name->toString());
+					}
+				}
+
+				$className = $classStack[count($classStack) - 1] ?? null;
+				$functionName = $functionStack[count($functionStack) - 1] ?? null;
+
+				if ($node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
+					$docComment = GetLastDocComment::forNode($node);
+					if ($docComment !== null) {
+						$nameScopeKey = $this->getNameScopeKey($originalClassFileName, $className, $lookForTrait, $functionName);
+						$phpDocNodeMap[$nameScopeKey] = $this->phpDocStringResolver->resolve($docComment);
+					}
+
+					return null;
+				} elseif ($node instanceof Node\PropertyHook) {
+					$propertyName = $node->getAttribute('propertyName');
+					if ($propertyName !== null) {
+						$docComment = GetLastDocComment::forNode($node);
+						if ($docComment !== null) {
+							$nameScopeKey = $this->getNameScopeKey($originalClassFileName, $className, $lookForTrait, $functionName);
+							$phpDocNodeMap[$nameScopeKey] = $this->phpDocStringResolver->resolve($docComment);
+						}
+					}
+
+					return null;
+				}
+
+				if ($node instanceof Node\Stmt\Namespace_) {
+					$namespace = $node->name !== null ? (string) $node->name : null;
+				} elseif ($node instanceof Node\Stmt\TraitUse) {
+					$traitMethodAliases = [];
+					foreach ($node->adaptations as $traitUseAdaptation) {
+						if (!$traitUseAdaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
+							continue;
+						}
+
+						if ($traitUseAdaptation->newName === null) {
+							continue;
+						}
+
+						$methodName = $traitUseAdaptation->method->toString();
+						$newTraitName = $traitUseAdaptation->newName->toString();
+
+						if ($traitUseAdaptation->trait === null) {
+							foreach ($node->traits as $traitName) {
+								$traitMethodAliases[$traitName->toString()][$methodName] = $newTraitName;
+							}
+							continue;
+						}
+
+						$traitMethodAliases[$traitUseAdaptation->trait->toString()][$methodName] = $newTraitName;
+					}
+
+					foreach ($node->traits as $traitName) {
+						/** @var class-string $traitName */
+						$traitName = (string) $traitName;
+						$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+						if (!$reflectionProvider->hasClass($traitName)) {
+							continue;
+						}
+
+						$traitReflection = $reflectionProvider->getClass($traitName);
+						if (!$traitReflection->isTrait()) {
+							continue;
+						}
+						if ($traitReflection->getFileName() === null) {
+							continue;
+						}
+						if (!is_file($traitReflection->getFileName())) {
+							continue;
+						}
+
+						$className = $classStack[count($classStack) - 1] ?? null;
+						if ($className === null) {
+							throw new ShouldNotHappenException();
+						}
+
+						$phpDocNodeMap = array_merge($phpDocNodeMap, $this->createPhpDocNodeMap(
+							$traitReflection->getFileName(),
+							$traitName,
+							$className,
+							$traitMethodAliases[$traitName] ?? [],
+							$originalClassFileName,
+						));
+					}
+				}
+
+				return null;
+			},
+			static function (Node $node) use (&$namespace, &$functionStack, &$classStack): void {
+				if ($node instanceof Node\Stmt\ClassLike) {
+					if (count($classStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+					array_pop($classStack);
+
+					if (count($functionStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+
+					array_pop($functionStack);
+				} elseif ($node instanceof Node\Stmt\Namespace_) {
+					$namespace = null;
+				} elseif ($node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
+					if (count($functionStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+
+					array_pop($functionStack);
+				} elseif ($node instanceof Node\PropertyHook) {
+					$propertyName = $node->getAttribute('propertyName');
+					if ($propertyName !== null) {
+						if (count($functionStack) === 0) {
+							throw new ShouldNotHappenException();
+						}
+
+						array_pop($functionStack);
+					}
+				}
+			},
+		);
+
+		return $phpDocNodeMap;
+	}
+
+	/**
+	 * @param array<string, string> $traitMethodAliases
+	 * @param array<string, PhpDocNode> $phpDocNodeMap
+	 * @return (callable(): NameScope)[]
+	 */
+	private function createNameScopeMap(
+		string $fileName,
+		?string $lookForTrait,
+		?string $traitUseClass,
+		array $traitMethodAliases,
+		string $originalClassFileName,
+		array $phpDocNodeMap,
+	): array
+	{
+		/** @var (callable(): NameScope)[] $nameScopeMap */
+		$nameScopeMap = [];
+
+		/** @var (callable(): TemplateTypeMap)[] $typeMapStack */
+		$typeMapStack = [];
+
+		/** @var array<int, array<string, true>> $typeAliasStack */
+		$typeAliasStack = [];
+
+		/** @var string[] $classStack */
+		$classStack = [];
+		if ($lookForTrait !== null && $traitUseClass !== null) {
+			$classStack[] = $traitUseClass;
+			$typeAliasStack[] = [];
+		}
+		$namespace = null;
+
+		$traitFound = false;
+
+		/** @var array<string|null> $functionStack */
+		$functionStack = [];
+		$uses = [];
+		$constUses = [];
+		$this->processNodes(
+			$this->phpParser->parseFile($fileName),
+			function (Node $node) use ($fileName, $lookForTrait, $phpDocNodeMap, &$traitFound, $traitMethodAliases, $originalClassFileName, &$nameScopeMap, &$classStack, &$typeAliasStack, &$namespace, &$functionStack, &$uses, &$typeMapStack, &$constUses): ?int {
+				if ($node instanceof Node\Stmt\ClassLike) {
+					if ($traitFound && $fileName === $originalClassFileName) {
+						return self::SKIP_NODE;
+					}
+
+					if ($lookForTrait !== null && !$traitFound) {
+						if (!$node instanceof Node\Stmt\Trait_) {
+							return self::SKIP_NODE;
+						}
+						if ((string) $node->namespacedName !== $lookForTrait) {
+							return self::SKIP_NODE;
+						}
+
+						$traitFound = true;
+						$traitNameScopeKey = $this->getNameScopeKey($originalClassFileName, $classStack[count($classStack) - 1] ?? null, $lookForTrait, null);
+						if (array_key_exists($traitNameScopeKey, $phpDocNodeMap)) {
+							$typeAliasStack[] = $this->getTypeAliasesMap($phpDocNodeMap[$traitNameScopeKey]);
+						} else {
+							$typeAliasStack[] = [];
+						}
+						$functionStack[] = null;
+					} else {
+						if ($node->name === null) {
+							if (!$node instanceof Node\Stmt\Class_) {
+								throw new ShouldNotHappenException();
+							}
+
+							$className = $this->anonymousClassNameHelper->getAnonymousClassName($node, $fileName);
+						} elseif ($node instanceof Node\Stmt\Class_ && $node->isAnonymous()) {
+							$className = $node->name->name;
+						} else {
+							if ($traitFound) {
+								return self::SKIP_NODE;
+							}
+							$className = ltrim(sprintf('%s\\%s', $namespace, $node->name->name), '\\');
+						}
+						$classStack[] = $className;
+						$classNameScopeKey = $this->getNameScopeKey($originalClassFileName, $className, $lookForTrait, null);
+						if (array_key_exists($classNameScopeKey, $phpDocNodeMap)) {
+							$typeAliasStack[] = $this->getTypeAliasesMap($phpDocNodeMap[$classNameScopeKey]);
+						} else {
+							$typeAliasStack[] = [];
+						}
+						$functionStack[] = null;
+					}
+				} elseif ($node instanceof Node\Stmt\ClassMethod) {
+					if (array_key_exists($node->name->name, $traitMethodAliases)) {
+						$functionStack[] = $traitMethodAliases[$node->name->name];
+					} else {
+						$functionStack[] = $node->name->name;
+					}
+				} elseif ($node instanceof Node\Stmt\Function_) {
+					$functionStack[] = ltrim(sprintf('%s\\%s', $namespace, $node->name->name), '\\');
+				} elseif ($node instanceof Node\PropertyHook) {
+					$propertyName = $node->getAttribute('propertyName');
+					if ($propertyName !== null) {
+						$functionStack[] = sprintf('$%s::%s', $propertyName, $node->name->toString());
+					}
+				}
+
+				$className = $classStack[count($classStack) - 1] ?? null;
+				$functionName = $functionStack[count($functionStack) - 1] ?? null;
+				$nameScopeKey = $this->getNameScopeKey($originalClassFileName, $className, $lookForTrait, $functionName);
+
+				if ($node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
+					// property hook skipped on purpose, it does not support @template
+					if (array_key_exists($nameScopeKey, $phpDocNodeMap)) {
+						$phpDocNode = $phpDocNodeMap[$nameScopeKey];
+						$typeMapStack[] = function () use ($namespace, $uses, $className, $lookForTrait, $functionName, $phpDocNode, $typeMapStack, $typeAliasStack, $constUses): TemplateTypeMap {
+							$typeMapCb = $typeMapStack[count($typeMapStack) - 1] ?? null;
+							$currentTypeMap = $typeMapCb !== null ? $typeMapCb() : null;
+							$typeAliasesMap = $typeAliasStack[count($typeAliasStack) - 1] ?? [];
+							$nameScope = new NameScope($namespace, $uses, $className, $functionName, $currentTypeMap, $typeAliasesMap, false, $constUses, $lookForTrait);
+							$templateTags = $this->phpDocNodeResolver->resolveTemplateTags($phpDocNode, $nameScope);
+							$templateTypeScope = $nameScope->getTemplateTypeScope();
+							if ($templateTypeScope === null) {
+								throw new ShouldNotHappenException();
+							}
+							$templateTypeMap = new TemplateTypeMap(array_map(static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag), $templateTags));
+							$nameScope = $nameScope->withTemplateTypeMap($templateTypeMap);
+							$templateTags = $this->phpDocNodeResolver->resolveTemplateTags($phpDocNode, $nameScope);
+							$templateTypeMap = new TemplateTypeMap(array_map(static fn (TemplateTag $tag): Type => TemplateTypeFactory::fromTemplateTag($templateTypeScope, $tag), $templateTags));
+
+							return new TemplateTypeMap(array_merge(
+								$currentTypeMap !== null ? $currentTypeMap->getTypes() : [],
+								$templateTypeMap->getTypes(),
+							));
+						};
+					}
+				}
+
+				$typeMapCb = $typeMapStack[count($typeMapStack) - 1] ?? null;
+				$typeAliasesMap = $typeAliasStack[count($typeAliasStack) - 1] ?? [];
+
+				if (
+					(
+						$node instanceof Node\PropertyHook
+						|| (
+							$node instanceof Node\Stmt
+							&& !$node instanceof Node\Stmt\Namespace_
+							&& !$node instanceof Node\Stmt\Declare_
+							&& !$node instanceof Node\Stmt\Use_
+							&& !$node instanceof Node\Stmt\GroupUse
+							&& !$node instanceof Node\Stmt\TraitUse
+							&& !$node instanceof Node\Stmt\TraitUseAdaptation
+							&& !$node instanceof Node\Stmt\InlineHTML
+							&& !($node instanceof Node\Stmt\Expression && $node->expr instanceof Node\Expr\Include_)
+						)
+					) && !array_key_exists($nameScopeKey, $nameScopeMap)
+				) {
+					$nameScopeMap[$nameScopeKey] = static fn (): NameScope => new NameScope(
+						$namespace,
+						$uses,
+						$className,
+						$functionName,
+						($typeMapCb !== null ? $typeMapCb() : TemplateTypeMap::createEmpty()),
+						$typeAliasesMap,
+						false,
+						$constUses,
+						$lookForTrait,
+					);
+				}
+
+				if ($node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
+					// property hook skipped on purpose, it does not support @template
+					if (array_key_exists($nameScopeKey, $phpDocNodeMap)) {
+						return self::POP_TYPE_MAP_STACK;
+					}
+
+					return null;
+				}
+
+				if ($node instanceof Node\Stmt\Namespace_) {
+					$namespace = $node->name !== null ? (string) $node->name : null;
+				} elseif ($node instanceof Node\Stmt\Use_) {
+					if ($node->type === Node\Stmt\Use_::TYPE_NORMAL) {
+						foreach ($node->uses as $use) {
+							$uses[strtolower($use->getAlias()->name)] = (string) $use->name;
+						}
+					} elseif ($node->type === Node\Stmt\Use_::TYPE_CONSTANT) {
+						foreach ($node->uses as $use) {
+							$constUses[strtolower($use->getAlias()->name)] = (string) $use->name;
+						}
+					}
+				} elseif ($node instanceof Node\Stmt\GroupUse) {
+					$prefix = (string) $node->prefix;
+					foreach ($node->uses as $use) {
+						if ($node->type === Node\Stmt\Use_::TYPE_NORMAL || $use->type === Node\Stmt\Use_::TYPE_NORMAL) {
+							$uses[strtolower($use->getAlias()->name)] = sprintf('%s\\%s', $prefix, (string) $use->name);
+						} elseif ($node->type === Node\Stmt\Use_::TYPE_CONSTANT || $use->type === Node\Stmt\Use_::TYPE_CONSTANT) {
+							$constUses[strtolower($use->getAlias()->name)] = sprintf('%s\\%s', $prefix, (string) $use->name);
+						}
+					}
+				} elseif ($node instanceof Node\Stmt\TraitUse) {
+					$traitMethodAliases = [];
+					foreach ($node->adaptations as $traitUseAdaptation) {
+						if (!$traitUseAdaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
+							continue;
+						}
+
+						if ($traitUseAdaptation->newName === null) {
+							continue;
+						}
+
+						$methodName = $traitUseAdaptation->method->toString();
+						$newTraitName = $traitUseAdaptation->newName->toString();
+
+						if ($traitUseAdaptation->trait === null) {
+							foreach ($node->traits as $traitName) {
+								$traitMethodAliases[$traitName->toString()][$methodName] = $newTraitName;
+							}
+							continue;
+						}
+
+						$traitMethodAliases[$traitUseAdaptation->trait->toString()][$methodName] = $newTraitName;
+					}
+
+					$useDocComment = null;
+					if ($node->getDocComment() !== null) {
+						$useDocComment = $node->getDocComment()->getText();
+					}
+
+					foreach ($node->traits as $traitName) {
+						/** @var class-string $traitName */
+						$traitName = (string) $traitName;
+						$reflectionProvider = $this->reflectionProviderProvider->getReflectionProvider();
+						if (!$reflectionProvider->hasClass($traitName)) {
+							continue;
+						}
+
+						$traitReflection = $reflectionProvider->getClass($traitName);
+						if (!$traitReflection->isTrait()) {
+							continue;
+						}
+						if ($traitReflection->getFileName() === null) {
+							continue;
+						}
+						if (!is_file($traitReflection->getFileName())) {
+							continue;
+						}
+
+						$className = $classStack[count($classStack) - 1] ?? null;
+						if ($className === null) {
+							throw new ShouldNotHappenException();
+						}
+
+						$traitPhpDocMap = $this->createNameScopeMap(
+							$traitReflection->getFileName(),
+							$traitName,
+							$className,
+							$traitMethodAliases[$traitName] ?? [],
+							$originalClassFileName,
+							$phpDocNodeMap,
+						);
+						$finalTraitPhpDocMap = [];
+						foreach ($traitPhpDocMap as $nameScopeTraitKey => $callback) {
+							$finalTraitPhpDocMap[$nameScopeTraitKey] = function () use ($callback, $traitReflection, $fileName, $className, $lookForTrait, $useDocComment): NameScope {
+								/** @var NameScope $original */
+								$original = $callback();
+								if (!$traitReflection->isGeneric()) {
+									return $original;
+								}
+
+								$traitTemplateTypeMap = $traitReflection->getTemplateTypeMap();
+
+								$useType = null;
+								if ($useDocComment !== null) {
+									$useTags = $this->getResolvedPhpDoc(
+										$fileName,
+										$className,
+										$lookForTrait,
+										null,
+										$useDocComment,
+									)->getUsesTags();
+									foreach ($useTags as $useTag) {
+										$useTagType = $useTag->getType();
+										if (!$useTagType instanceof GenericObjectType) {
+											continue;
+										}
+
+										if ($useTagType->getClassName() !== $traitReflection->getName()) {
+											continue;
+										}
+
+										$useType = $useTagType;
+										break;
+									}
+								}
+
+								if ($useType === null) {
+									return $original->withTemplateTypeMap($traitTemplateTypeMap->resolveToBounds());
+								}
+
+								$transformedTraitTypeMap = $traitReflection->typeMapFromList($useType->getTypes());
+
+								return $original->withTemplateTypeMap($traitTemplateTypeMap->map(static fn (string $name, Type $type): Type => TemplateTypeHelper::resolveTemplateTypes($type, $transformedTraitTypeMap, TemplateTypeVarianceMap::createEmpty(), TemplateTypeVariance::createStatic())));
+							};
+						}
+						$nameScopeMap = array_merge($nameScopeMap, $finalTraitPhpDocMap);
+					}
+				}
+
+				return null;
+			},
+			static function (Node $node, $callbackResult) use (&$namespace, &$functionStack, &$classStack, &$typeAliasStack, &$uses, &$typeMapStack, &$constUses): void {
+				if ($node instanceof Node\Stmt\ClassLike) {
+					if (count($classStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+					array_pop($classStack);
+
+					if (count($typeAliasStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+
+					array_pop($typeAliasStack);
+
+					if (count($functionStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+
+					array_pop($functionStack);
+				} elseif ($node instanceof Node\Stmt\Namespace_) {
+					$namespace = null;
+					$uses = [];
+					$constUses = [];
+				} elseif ($node instanceof Node\Stmt\ClassMethod || $node instanceof Node\Stmt\Function_) {
+					if (count($functionStack) === 0) {
+						throw new ShouldNotHappenException();
+					}
+
+					array_pop($functionStack);
+				} elseif ($node instanceof Node\PropertyHook) {
+					$propertyName = $node->getAttribute('propertyName');
+					if ($propertyName !== null) {
+						if (count($functionStack) === 0) {
+							throw new ShouldNotHappenException();
+						}
+
+						array_pop($functionStack);
+					}
+				}
+				if ($callbackResult !== self::POP_TYPE_MAP_STACK) {
+					return;
+				}
+
+				if (count($typeMapStack) === 0) {
+					throw new ShouldNotHappenException();
+				}
+				array_pop($typeMapStack);
+			},
+		);
+
+		if (count($typeMapStack) > 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $nameScopeMap;
+	}
+
+	/**
+	 * @return array<string, true>
+	 */
+	private function getTypeAliasesMap(PhpDocNode $phpDocNode): array
+	{
+		$nameScope = new NameScope(null, []);
+
+		$aliasesMap = [];
+		foreach (array_keys($this->phpDocNodeResolver->resolveTypeAliasImportTags($phpDocNode, $nameScope)) as $key) {
+			$aliasesMap[$key] = true;
+		}
+
+		foreach (array_keys($this->phpDocNodeResolver->resolveTypeAliasTags($phpDocNode, $nameScope)) as $key) {
+			$aliasesMap[$key] = true;
+		}
+
+		return $aliasesMap;
+	}
+
+	/**
+	 * @param Node[]|Node|scalar|null $node
+	 * @param Closure(Node $node): mixed $nodeCallback
+	 * @param Closure(Node $node, mixed $callbackResult): void $endNodeCallback
+	 */
+	private function processNodes($node, Closure $nodeCallback, Closure $endNodeCallback): void
+	{
+		if ($node instanceof Node) {
+			$callbackResult = $nodeCallback($node);
+			if ($callbackResult === self::SKIP_NODE) {
+				return;
+			}
+			foreach ($node->getSubNodeNames() as $subNodeName) {
+				$subNode = $node->{$subNodeName};
+				$this->processNodes($subNode, $nodeCallback, $endNodeCallback);
+			}
+			$endNodeCallback($node, $callbackResult);
+		} elseif (is_array($node)) {
+			foreach ($node as $subNode) {
+				$this->processNodes($subNode, $nodeCallback, $endNodeCallback);
+			}
+		}
+	}
+
+	private function getNameScopeKey(
+		?string $file,
+		?string $class,
+		?string $trait,
+		?string $function,
+	): string
+	{
+		if ($class === null && $trait === null && $function === null) {
+			return md5(sprintf('%s', $file ?? 'no-file'));
+		}
+
+		if ($class !== null && str_contains($class, 'class@anonymous')) {
+			throw new ShouldNotHappenException('Wrong anonymous class name, FilTypeMapper should be called with ClassReflection::getName().');
+		}
+
+		return md5(sprintf('%s-%s-%s-%s', $file ?? 'no-file', $class, $trait, $function));
+	}
+
+}
diff --git a/src/Type/FloatType.php b/src/Type/FloatType.php
new file mode 100644
index 00000000..31630d34
--- /dev/null
+++ b/src/Type/FloatType.php
@@ -0,0 +1,297 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function get_class;
+
+/** @api */
+class FloatType implements Type
+{
+
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGenericTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof self || $type->isInteger()->yes()) {
+			return AcceptsResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return get_class($type) === static::class;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'float';
+	}
+
+	public function toNumber(): Type
+	{
+		return $this;
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this;
+	}
+
+	public function toFloat(): Type
+	{
+		return $this;
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toString(): Type
+	{
+		return new IntersectionType([
+			new StringType(),
+			new AccessoryUppercaseStringType(),
+			new AccessoryNumericStringType(),
+		]);
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return ExponentiateHelper::exponentiate($this, $exponent);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('float');
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Type/FunctionParameterClosureTypeExtension.php b/src/Type/FunctionParameterClosureTypeExtension.php
new file mode 100644
index 00000000..bfc3aac2
--- /dev/null
+++ b/src/Type/FunctionParameterClosureTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface for parameter closure type extensions for functions.
+ *
+ * To register it in the configuration file use the `phpstan.functionParameterClosureTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.functionParameterClosureTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface FunctionParameterClosureTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool;
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/FunctionParameterOutTypeExtension.php b/src/Type/FunctionParameterOutTypeExtension.php
new file mode 100644
index 00000000..94ed22bd
--- /dev/null
+++ b/src/Type/FunctionParameterOutTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface dynamic parameter out type extensions implement for functions.
+ *
+ * To register it in the configuration file use the `phpstan.functionParameterOutTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.functionParameterOutTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface FunctionParameterOutTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool;
+
+	public function getParameterOutTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/FunctionTypeSpecifyingExtension.php b/src/Type/FunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..f4df56e0
--- /dev/null
+++ b/src/Type/FunctionTypeSpecifyingExtension.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+
+/**
+ * This is the interface type-specifying extensions implement for functions.
+ *
+ * To register it in the configuration file use the `phpstan.typeSpecifier.functionTypeSpecifyingExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.typeSpecifier.functionTypeSpecifyingExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/type-specifying-extensions
+ *
+ * @api
+ */
+interface FunctionTypeSpecifyingExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool;
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes;
+
+}
diff --git a/src/Type/GeneralizePrecision.php b/src/Type/GeneralizePrecision.php
new file mode 100644
index 00000000..0003fadc
--- /dev/null
+++ b/src/Type/GeneralizePrecision.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class GeneralizePrecision
+{
+
+	private const LESS_SPECIFIC = 1;
+	private const MORE_SPECIFIC = 2;
+	private const TEMPLATE_ARGUMENT = 3;
+
+	/** @var self[] */
+	private static array $registry;
+
+	private function __construct(private int $value)
+	{
+	}
+
+	private static function create(int $value): self
+	{
+		self::$registry[$value] ??= new self($value);
+		return self::$registry[$value];
+	}
+
+	/** @api */
+	public static function lessSpecific(): self
+	{
+		return self::create(self::LESS_SPECIFIC);
+	}
+
+	/** @api */
+	public static function moreSpecific(): self
+	{
+		return self::create(self::MORE_SPECIFIC);
+	}
+
+	/** @api */
+	public static function templateArgument(): self
+	{
+		return self::create(self::TEMPLATE_ARGUMENT);
+	}
+
+	public function isLessSpecific(): bool
+	{
+		return $this->value === self::LESS_SPECIFIC;
+	}
+
+	public function isMoreSpecific(): bool
+	{
+		return $this->value === self::MORE_SPECIFIC;
+	}
+
+	public function isTemplateArgument(): bool
+	{
+		return $this->value === self::TEMPLATE_ARGUMENT;
+	}
+
+}
diff --git a/src/Type/Generic/GenericClassStringType.php b/src/Type/Generic/GenericClassStringType.php
new file mode 100644
index 00000000..a9b4b038
--- /dev/null
+++ b/src/Type/Generic/GenericClassStringType.php
@@ -0,0 +1,226 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function count;
+use function sprintf;
+
+/** @api */
+class GenericClassStringType extends ClassStringType
+{
+
+	/** @api */
+	public function __construct(private Type $type)
+	{
+		parent::__construct();
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->type->getReferencedClasses();
+	}
+
+	public function getGenericType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return $this->getGenericType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this->getClassStringObjectType();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('%s<%s>', parent::describe($level), $this->type->describe($level));
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if ($type instanceof ConstantStringType) {
+			if (!$type->isClassString()->yes()) {
+				return AcceptsResult::createNo();
+			}
+
+			$objectType = new ObjectType($type->getValue());
+		} elseif ($type instanceof self) {
+			$objectType = $type->type;
+		} elseif ($type instanceof ClassStringType) {
+			$objectType = new ObjectWithoutClassType();
+		} elseif ($type instanceof StringType) {
+			return AcceptsResult::createMaybe();
+		} else {
+			return AcceptsResult::createNo();
+		}
+
+		return $this->type->accepts($objectType, $strictTypes);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof ConstantStringType) {
+			$genericType = $this->type;
+			if ($genericType instanceof MixedType) {
+				return IsSuperTypeOfResult::createYes();
+			}
+
+			if ($genericType instanceof StaticType) {
+				$genericType = $genericType->getStaticObjectType();
+			}
+
+			// We are transforming constant class-string to ObjectType. But we need to filter out
+			// an uncertainty originating in possible ObjectType's class subtypes.
+			$objectType = new ObjectType($type->getValue());
+
+			// Do not use TemplateType's isSuperTypeOf handling directly because it takes ObjectType
+			// uncertainty into account.
+			if ($genericType instanceof TemplateType) {
+				$isSuperType = $genericType->getBound()->isSuperTypeOf($objectType);
+			} else {
+				$isSuperType = $genericType->isSuperTypeOf($objectType);
+			}
+
+			if (!$type->isClassString()->yes()) {
+				$isSuperType = $isSuperType->and(IsSuperTypeOfResult::createMaybe());
+			}
+
+			return $isSuperType;
+		} elseif ($type instanceof self) {
+			return $this->type->isSuperTypeOf($type->type);
+		} elseif ($type instanceof StringType) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$newType = $cb($this->type);
+		if ($newType === $this->type) {
+			return $this;
+		}
+
+		return new self($newType);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$newType = $cb($this->type, $right->getClassStringObjectType());
+		if ($newType === $this->type) {
+			return $this;
+		}
+
+		return new self($newType);
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if ($receivedType instanceof ConstantStringType) {
+			$typeToInfer = new ObjectType($receivedType->getValue());
+		} elseif ($receivedType instanceof self) {
+			$typeToInfer = $receivedType->type;
+		} elseif ($receivedType->isClassString()->yes()) {
+			$typeToInfer = $this->type;
+			if ($typeToInfer instanceof TemplateType) {
+				$typeToInfer = $typeToInfer->getBound();
+			}
+
+			$typeToInfer = TypeCombinator::intersect($typeToInfer, new ObjectWithoutClassType());
+		} else {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		return $this->type->inferTemplateTypes($typeToInfer);
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$variance = $positionVariance->compose(TemplateTypeVariance::createCovariant());
+
+		return $this->type->getReferencedTemplateTypes($variance);
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if (!parent::equals($type)) {
+			return false;
+		}
+
+		if (!$this->type->equals($type->type)) {
+			return false;
+		}
+
+		return true;
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new GenericTypeNode(
+			new IdentifierTypeNode('class-string'),
+			[
+				$this->type->toPhpDocNode(),
+			],
+		);
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ConstantStringType && $typeToRemove->isClassString()->yes()) {
+			$generic = $this->getGenericType();
+
+			$genericObjectClassNames = $generic->getObjectClassNames();
+			if (count($genericObjectClassNames) === 1) {
+				$classReflection = ReflectionProviderStaticAccessor::getInstance()->getClass($genericObjectClassNames[0]);
+				if ($classReflection->isFinal() && $genericObjectClassNames[0] === $typeToRemove->getValue()) {
+					return new NeverType();
+				}
+			}
+		}
+
+		return parent::tryRemove($typeToRemove);
+	}
+
+}
diff --git a/src/Type/Generic/GenericObjectType.php b/src/Type/Generic/GenericObjectType.php
new file mode 100644
index 00000000..7691b693
--- /dev/null
+++ b/src/Type/Generic/GenericObjectType.php
@@ -0,0 +1,394 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeWithClassName;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function array_map;
+use function count;
+use function implode;
+use function sprintf;
+
+/** @api */
+class GenericObjectType extends ObjectType
+{
+
+	/**
+	 * @api
+	 * @param array<int, Type> $types
+	 * @param array<int, TemplateTypeVariance> $variances
+	 */
+	public function __construct(
+		string $mainType,
+		private array $types,
+		?Type $subtractedType = null,
+		private ?ClassReflection $classReflection = null,
+		private array $variances = [],
+	)
+	{
+		parent::__construct($mainType, $subtractedType, $classReflection);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf(
+			'%s<%s>',
+			parent::describe($level),
+			implode(', ', array_map(
+				static fn (Type $type, ?TemplateTypeVariance $variance = null): string => TypeProjectionHelper::describe($type, $variance, $level),
+				$this->types,
+				$this->variances,
+			)),
+		);
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if (!parent::equals($type)) {
+			return false;
+		}
+
+		if (count($this->types) !== count($type->types)) {
+			return false;
+		}
+
+		foreach ($this->types as $i => $genericType) {
+			$otherGenericType = $type->types[$i];
+			if (!$genericType->equals($otherGenericType)) {
+				return false;
+			}
+
+			$variance = $this->variances[$i] ?? TemplateTypeVariance::createInvariant();
+			$otherVariance = $type->variances[$i] ?? TemplateTypeVariance::createInvariant();
+			if (!$variance->equals($otherVariance)) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = parent::getReferencedClasses();
+		foreach ($this->types as $type) {
+			foreach ($type->getReferencedClasses() as $referencedClass) {
+				$classes[] = $referencedClass;
+			}
+		}
+
+		return $classes;
+	}
+
+	/** @return array<int, Type> */
+	public function getTypes(): array
+	{
+		return $this->types;
+	}
+
+	/** @return array<int, TemplateTypeVariance> */
+	public function getVariances(): array
+	{
+		return $this->variances;
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return $this->isSuperTypeOfInternal($type, true)->toAcceptsResult();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return $this->isSuperTypeOfInternal($type, false);
+	}
+
+	private function isSuperTypeOfInternal(Type $type, bool $acceptsContext): IsSuperTypeOfResult
+	{
+		$nakedSuperTypeOf = parent::isSuperTypeOf($type);
+		if ($nakedSuperTypeOf->no()) {
+			return $nakedSuperTypeOf;
+		}
+
+		if (!$type instanceof ObjectType) {
+			return $nakedSuperTypeOf;
+		}
+
+		$ancestor = $type->getAncestorWithClassName($this->getClassName());
+		if ($ancestor === null) {
+			return $nakedSuperTypeOf;
+		}
+		if (!$ancestor instanceof self) {
+			if ($acceptsContext) {
+				return $nakedSuperTypeOf;
+			}
+
+			return $nakedSuperTypeOf->and(IsSuperTypeOfResult::createMaybe());
+		}
+
+		if (count($this->types) !== count($ancestor->types)) {
+			return IsSuperTypeOfResult::createNo();
+		}
+
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return $nakedSuperTypeOf;
+		}
+
+		$typeList = $classReflection->typeMapToList($classReflection->getTemplateTypeMap());
+		$results = [];
+		foreach ($typeList as $i => $templateType) {
+			if (!isset($ancestor->types[$i])) {
+				continue;
+			}
+			if (!isset($this->types[$i])) {
+				continue;
+			}
+			if ($templateType instanceof ErrorType) {
+				continue;
+			}
+			if (!$templateType instanceof TemplateType) {
+				throw new ShouldNotHappenException();
+			}
+
+			$thisVariance = $this->variances[$i] ?? TemplateTypeVariance::createInvariant();
+			$ancestorVariance = $ancestor->variances[$i] ?? TemplateTypeVariance::createInvariant();
+			if (!$thisVariance->invariant()) {
+				$results[] = $thisVariance->isValidVariance($templateType, $this->types[$i], $ancestor->types[$i]);
+			} else {
+				$results[] = $templateType->isValidVariance($this->types[$i], $ancestor->types[$i]);
+			}
+
+			$results[] = IsSuperTypeOfResult::createFromBoolean($thisVariance->validPosition($ancestorVariance));
+		}
+
+		if (count($results) === 0) {
+			return $nakedSuperTypeOf;
+		}
+
+		$result = IsSuperTypeOfResult::createYes();
+		foreach ($results as $innerResult) {
+			$result = $result->and($innerResult);
+		}
+
+		return $result;
+	}
+
+	public function getClassReflection(): ?ClassReflection
+	{
+		if ($this->classReflection !== null) {
+			return $this->classReflection;
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if (!$reflectionProvider->hasClass($this->getClassName())) {
+			return null;
+		}
+
+		return $this->classReflection = $reflectionProvider->getClass($this->getClassName())
+			->withTypes($this->types)
+			->withVariances($this->variances);
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$prototype = parent::getUnresolvedPropertyPrototype($propertyName, $scope);
+
+		return $prototype->doNotResolveTemplateTypeMapToBounds();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$prototype = parent::getUnresolvedMethodPrototype($methodName, $scope);
+
+		return $prototype->doNotResolveTemplateTypeMapToBounds();
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if (!$receivedType instanceof TypeWithClassName) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$ancestor = $receivedType->getAncestorWithClassName($this->getClassName());
+
+		if ($ancestor === null) {
+			return TemplateTypeMap::createEmpty();
+		}
+		$ancestorClassReflection = $ancestor->getClassReflection();
+		if ($ancestorClassReflection === null) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$otherTypes = $ancestorClassReflection->typeMapToList($ancestorClassReflection->getActiveTemplateTypeMap());
+		$typeMap = TemplateTypeMap::createEmpty();
+
+		foreach ($this->getTypes() as $i => $type) {
+			$other = $otherTypes[$i] ?? new ErrorType();
+			$typeMap = $typeMap->union($type->inferTemplateTypes($other));
+		}
+
+		return $typeMap;
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection !== null) {
+			$typeList = $classReflection->typeMapToList($classReflection->getTemplateTypeMap());
+		} else {
+			$typeList = [];
+		}
+
+		$references = [];
+
+		foreach ($this->types as $i => $type) {
+			$effectiveVariance = $this->variances[$i] ?? TemplateTypeVariance::createInvariant();
+			if ($effectiveVariance->invariant() && isset($typeList[$i]) && $typeList[$i] instanceof TemplateType) {
+				$effectiveVariance = $typeList[$i]->getVariance();
+			}
+
+			$variance = $positionVariance->compose($effectiveVariance);
+			foreach ($type->getReferencedTemplateTypes($variance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->getSubtractedType() !== null ? $cb($this->getSubtractedType()) : null;
+
+		$typesChanged = false;
+		$types = [];
+		foreach ($this->types as $type) {
+			$newType = $cb($type);
+			$types[] = $newType;
+			if ($newType === $type) {
+				continue;
+			}
+
+			$typesChanged = true;
+		}
+
+		if ($subtractedType !== $this->getSubtractedType() || $typesChanged) {
+			return $this->recreate($this->getClassName(), $types, $subtractedType, $this->variances);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof TypeWithClassName) {
+			return $this;
+		}
+
+		$ancestor = $right->getAncestorWithClassName($this->getClassName());
+		if (!$ancestor instanceof self) {
+			return $this;
+		}
+
+		if (count($this->types) !== count($ancestor->types)) {
+			return $this;
+		}
+
+		$typesChanged = false;
+		$types = [];
+		foreach ($this->types as $i => $leftType) {
+			$rightType = $ancestor->types[$i];
+			$newType = $cb($leftType, $rightType);
+			$types[] = $newType;
+			if ($newType === $leftType) {
+				continue;
+			}
+
+			$typesChanged = true;
+		}
+
+		if ($typesChanged) {
+			return $this->recreate($this->getClassName(), $types, null);
+		}
+
+		return $this;
+	}
+
+	/**
+	 * @param Type[] $types
+	 * @param TemplateTypeVariance[] $variances
+	 */
+	protected function recreate(string $className, array $types, ?Type $subtractedType, array $variances = []): self
+	{
+		return new self(
+			$className,
+			$types,
+			$subtractedType,
+			null,
+			$variances,
+		);
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		return new self($this->getClassName(), $this->types, $subtractedType, null, $this->variances);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		/** @var IdentifierTypeNode $parent */
+		$parent = parent::toPhpDocNode();
+		return new GenericTypeNode(
+			$parent,
+			array_map(static fn (Type $type) => $type->toPhpDocNode(), $this->types),
+			array_map(static fn (TemplateTypeVariance $variance) => $variance->toPhpDocNodeVariance(), $this->variances),
+		);
+	}
+
+}
diff --git a/src/Type/Generic/GenericStaticType.php b/src/Type/Generic/GenericStaticType.php
new file mode 100644
index 00000000..9ccc9895
--- /dev/null
+++ b/src/Type/Generic/GenericStaticType.php
@@ -0,0 +1,273 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeWithClassName;
+use function array_key_exists;
+use function array_map;
+use function count;
+
+/** @api */
+class GenericStaticType extends StaticType
+{
+
+	private ?ObjectType $staticObjectType = null;
+
+	/**
+	 * @api
+	 * @param array<int, Type> $types
+	 * @param array<int, TemplateTypeVariance> $variances
+	 */
+	public function __construct(
+		private ClassReflection $classReflection,
+		private array $types,
+		private ?Type $subtractedType,
+		private array $variances,
+	)
+	{
+		if (count($this->types) === 0) {
+			throw new ShouldNotHappenException('Cannot create GenericStaticType with zero types.');
+		}
+		parent::__construct($classReflection, $subtractedType);
+	}
+
+	/**
+	 * @return array<int, Type>
+	 */
+	public function getTypes(): array
+	{
+		return $this->types;
+	}
+
+	/** @return array<int, TemplateTypeVariance> */
+	public function getVariances(): array
+	{
+		return $this->variances;
+	}
+
+	public function getStaticObjectType(): ObjectType
+	{
+		if ($this->staticObjectType === null) {
+			if ($this->classReflection->isGeneric()) {
+				return $this->staticObjectType = new GenericObjectType(
+					$this->classReflection->getName(),
+					$this->types,
+					$this->subtractedType,
+					$this->classReflection,
+					$this->variances,
+				);
+			}
+
+			return $this->staticObjectType = parent::getStaticObjectType();
+		}
+
+		return $this->staticObjectType;
+	}
+
+	public function changeBaseClass(ClassReflection $classReflection): StaticType
+	{
+		if ($classReflection->getName() === $this->getClassName()) {
+			return $this;
+		}
+
+		if (!$classReflection->isGeneric()) {
+			return new StaticType($classReflection);
+		}
+
+		$templateTags = $this->getClassReflection()->getTemplateTags();
+		$i = 0;
+		$indexedTypes = [];
+		$indexedVariances = [];
+		foreach ($templateTags as $typeName => $tag) {
+			if (!array_key_exists($i, $this->types)) {
+				break;
+			}
+			if (!array_key_exists($i, $this->variances)) {
+				break;
+			}
+			$indexedTypes[$typeName] = $this->types[$i];
+			$indexedVariances[$typeName] = $this->variances[$i];
+			$i++;
+		}
+
+		$newType = new GenericObjectType($classReflection->getName(), $classReflection->typeMapToList($classReflection->getTemplateTypeMap()));
+		$ancestorType = $newType->getAncestorWithClassName($this->getClassName());
+		if ($ancestorType === null) {
+			return new self(
+				$classReflection,
+				$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				$this->subtractedType,
+				$classReflection->varianceMapToList($classReflection->getCallSiteVarianceMap()),
+			);
+		}
+
+		$ancestorClassReflection = $ancestorType->getClassReflection();
+		if ($ancestorClassReflection === null) {
+			return new self(
+				$classReflection,
+				$classReflection->typeMapToList($classReflection->getTemplateTypeMap()->resolveToBounds()),
+				$this->subtractedType,
+				$classReflection->varianceMapToList($classReflection->getCallSiteVarianceMap()),
+			);
+		}
+
+		$newClassTypes = [];
+		$newClassVariances = [];
+		foreach ($ancestorClassReflection->getActiveTemplateTypeMap()->getTypes() as $typeName => $templateType) {
+			if (!$templateType instanceof TemplateType) {
+				continue;
+			}
+
+			if (!array_key_exists($typeName, $indexedTypes)) {
+				continue;
+			}
+
+			$newClassTypes[$templateType->getName()] = $indexedTypes[$typeName];
+			$newClassVariances[$templateType->getName()] = $indexedVariances[$typeName];
+		}
+
+		return new self($classReflection, $classReflection->typeMapToList(new TemplateTypeMap($newClassTypes)), $this->subtractedType, $classReflection->varianceMapToList(new TemplateTypeVarianceMap($newClassVariances)));
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof self) {
+			return $this->getStaticObjectType()->isSuperTypeOf($type->getStaticObjectType());
+		}
+
+		return parent::isSuperTypeOf($type)->and(IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->getSubtractedType() !== null ? $cb($this->getSubtractedType()) : null;
+
+		$typesChanged = false;
+		$types = [];
+		foreach ($this->types as $type) {
+			$newType = $cb($type);
+			$types[] = $newType;
+			if ($newType === $type) {
+				continue;
+			}
+
+			$typesChanged = true;
+		}
+
+		if ($subtractedType !== $this->getSubtractedType() || $typesChanged) {
+			return new self(
+				$this->classReflection,
+				$types,
+				$subtractedType,
+				$this->variances,
+			);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof TypeWithClassName) {
+			return $this;
+		}
+
+		$ancestor = $right->getAncestorWithClassName($this->getClassName());
+		if (!$ancestor instanceof self) {
+			return $this;
+		}
+
+		if (count($this->types) !== count($ancestor->types)) {
+			return $this;
+		}
+
+		$typesChanged = false;
+		$types = [];
+		foreach ($this->types as $i => $leftType) {
+			$rightType = $ancestor->types[$i];
+			$newType = $cb($leftType, $rightType);
+			$types[] = $newType;
+			if ($newType === $leftType) {
+				continue;
+			}
+
+			$typesChanged = true;
+		}
+
+		if ($typesChanged) {
+			return new self(
+				$this->classReflection,
+				$types,
+				null,
+				$this->variances,
+			);
+		}
+
+		return $this;
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		if ($subtractedType !== null) {
+			$classReflection = $this->getClassReflection();
+			if ($classReflection->getAllowedSubTypes() !== null) {
+				$objectType = $this->getStaticObjectType()->changeSubtractedType($subtractedType);
+				if ($objectType instanceof NeverType) {
+					return $objectType;
+				}
+
+				if ($objectType instanceof ObjectType && $objectType->getSubtractedType() !== null) {
+					return new self($classReflection, $this->types, $objectType->getSubtractedType(), $this->variances);
+				}
+
+				return TypeCombinator::intersect($this, $objectType);
+			}
+		}
+
+		return new self(
+			$this->classReflection,
+			$this->types,
+			$subtractedType,
+			$this->variances,
+		);
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		return $this->getStaticObjectType()->inferTemplateTypes($receivedType);
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return $this->getStaticObjectType()->getReferencedTemplateTypes($positionVariance);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		/** @var IdentifierTypeNode $parent */
+		$parent = parent::toPhpDocNode();
+		return new GenericTypeNode(
+			$parent,
+			array_map(static fn (Type $type) => $type->toPhpDocNode(), $this->types),
+			array_map(static fn (TemplateTypeVariance $variance) => $variance->toPhpDocNodeVariance(), $this->variances),
+		);
+	}
+
+}
diff --git a/src/Type/Generic/TemplateArrayType.php b/src/Type/Generic/TemplateArrayType.php
new file mode 100644
index 00000000..5be2a130
--- /dev/null
+++ b/src/Type/Generic/TemplateArrayType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateArrayType extends ArrayType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<ArrayType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ArrayType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getKeyType(), $bound->getItemType());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateBenevolentUnionType.php b/src/Type/Generic/TemplateBenevolentUnionType.php
new file mode 100644
index 00000000..f9466e7f
--- /dev/null
+++ b/src/Type/Generic/TemplateBenevolentUnionType.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateBenevolentUnionType extends BenevolentUnionType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<BenevolentUnionType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		BenevolentUnionType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getTypes());
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	/** @param Type[] $types */
+	public function withTypes(array $types): self
+	{
+		return new self(
+			$this->scope,
+			$this->strategy,
+			$this->variance,
+			$this->name,
+			new BenevolentUnionType($types),
+			$this->default,
+		);
+	}
+
+	public function filterTypes(callable $filterCb): Type
+	{
+		$result = parent::filterTypes($filterCb);
+		if (!$result instanceof TemplateType) {
+			return TemplateTypeFactory::create(
+				$this->getScope(),
+				$this->getName(),
+				$result,
+				$this->getVariance(),
+				$this->getStrategy(),
+				$this->getDefault(),
+			);
+		}
+
+		return $result;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateBooleanType.php b/src/Type/Generic/TemplateBooleanType.php
new file mode 100644
index 00000000..143d595b
--- /dev/null
+++ b/src/Type/Generic/TemplateBooleanType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateBooleanType extends BooleanType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<BooleanType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		BooleanType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct();
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateConstantArrayType.php b/src/Type/Generic/TemplateConstantArrayType.php
new file mode 100644
index 00000000..a78e1373
--- /dev/null
+++ b/src/Type/Generic/TemplateConstantArrayType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateConstantArrayType extends ConstantArrayType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<ConstantArrayType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ConstantArrayType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getKeyTypes(), $bound->getValueTypes(), $bound->getNextAutoIndexes(), $bound->getOptionalKeys(), $bound->isList());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateConstantIntegerType.php b/src/Type/Generic/TemplateConstantIntegerType.php
new file mode 100644
index 00000000..ebfc1f84
--- /dev/null
+++ b/src/Type/Generic/TemplateConstantIntegerType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateConstantIntegerType extends ConstantIntegerType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<ConstantIntegerType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ConstantIntegerType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getValue());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateConstantStringType.php b/src/Type/Generic/TemplateConstantStringType.php
new file mode 100644
index 00000000..1159d305
--- /dev/null
+++ b/src/Type/Generic/TemplateConstantStringType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateConstantStringType extends ConstantStringType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<ConstantStringType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ConstantStringType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getValue());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateFloatType.php b/src/Type/Generic/TemplateFloatType.php
new file mode 100644
index 00000000..2c84a5f3
--- /dev/null
+++ b/src/Type/Generic/TemplateFloatType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\FloatType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateFloatType extends FloatType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<FloatType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		FloatType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct();
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateGenericObjectType.php b/src/Type/Generic/TemplateGenericObjectType.php
new file mode 100644
index 00000000..a09f4177
--- /dev/null
+++ b/src/Type/Generic/TemplateGenericObjectType.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateGenericObjectType extends GenericObjectType implements TemplateType
+{
+
+	use UndecidedComparisonCompoundTypeTrait;
+	/** @use TemplateTypeTrait<GenericObjectType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		GenericObjectType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getClassName(), $bound->getTypes(), null, null, $bound->getVariances());
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function recreate(string $className, array $types, ?Type $subtractedType, array $variances = []): GenericObjectType
+	{
+		return new self(
+			$this->scope,
+			$this->strategy,
+			$this->variance,
+			$this->name,
+			$this->getBound(),
+			$this->default,
+		);
+	}
+
+}
diff --git a/src/Type/Generic/TemplateIntegerType.php b/src/Type/Generic/TemplateIntegerType.php
new file mode 100644
index 00000000..c3b679be
--- /dev/null
+++ b/src/Type/Generic/TemplateIntegerType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateIntegerType extends IntegerType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<IntegerType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		IntegerType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct();
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateIntersectionType.php b/src/Type/Generic/TemplateIntersectionType.php
new file mode 100644
index 00000000..d585ae0f
--- /dev/null
+++ b/src/Type/Generic/TemplateIntersectionType.php
@@ -0,0 +1,38 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateIntersectionType extends IntersectionType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<IntersectionType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		IntersectionType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getTypes());
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateKeyOfType.php b/src/Type/Generic/TemplateKeyOfType.php
new file mode 100644
index 00000000..85f86c14
--- /dev/null
+++ b/src/Type/Generic/TemplateKeyOfType.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\KeyOfType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateKeyOfType extends KeyOfType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<KeyOfType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		KeyOfType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getType());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function getResult(): Type
+	{
+		$result = $this->getBound()->getResult();
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$result,
+			$this->getVariance(),
+			$this->getStrategy(),
+			$this->getDefault(),
+		);
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateMixedType.php b/src/Type/Generic/TemplateMixedType.php
new file mode 100644
index 00000000..211d3c48
--- /dev/null
+++ b/src/Type/Generic/TemplateMixedType.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StrictMixedType;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateMixedType extends MixedType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<MixedType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		MixedType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct(true);
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	public function isSuperTypeOfMixed(MixedType $type): IsSuperTypeOfResult
+	{
+		return $this->isSuperTypeOf($type);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		$isSuperType = $this->isSuperTypeOf($acceptingType)->toAcceptsResult();
+		if ($isSuperType->no()) {
+			return $isSuperType;
+		}
+		return AcceptsResult::createYes();
+	}
+
+	public function toStrictMixedType(): TemplateStrictMixedType
+	{
+		return new TemplateStrictMixedType(
+			$this->scope,
+			$this->strategy,
+			$this->variance,
+			$this->name,
+			new StrictMixedType(),
+			$this->default,
+		);
+	}
+
+}
diff --git a/src/Type/Generic/TemplateObjectShapeType.php b/src/Type/Generic/TemplateObjectShapeType.php
new file mode 100644
index 00000000..51561a27
--- /dev/null
+++ b/src/Type/Generic/TemplateObjectShapeType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateObjectShapeType extends ObjectShapeType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<ObjectShapeType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ObjectShapeType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getProperties(), $bound->getOptionalProperties());
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateObjectType.php b/src/Type/Generic/TemplateObjectType.php
new file mode 100644
index 00000000..3014efd0
--- /dev/null
+++ b/src/Type/Generic/TemplateObjectType.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateObjectType extends ObjectType implements TemplateType
+{
+
+	use UndecidedComparisonCompoundTypeTrait;
+	/** @use TemplateTypeTrait<ObjectType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ObjectType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getClassName());
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateObjectWithoutClassType.php b/src/Type/Generic/TemplateObjectWithoutClassType.php
new file mode 100644
index 00000000..b0b85582
--- /dev/null
+++ b/src/Type/Generic/TemplateObjectWithoutClassType.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+class TemplateObjectWithoutClassType extends ObjectWithoutClassType implements TemplateType
+{
+
+	use UndecidedComparisonCompoundTypeTrait;
+	/** @use TemplateTypeTrait<ObjectWithoutClassType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		ObjectWithoutClassType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct();
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateStrictMixedType.php b/src/Type/Generic/TemplateStrictMixedType.php
new file mode 100644
index 00000000..0e9562c7
--- /dev/null
+++ b/src/Type/Generic/TemplateStrictMixedType.php
@@ -0,0 +1,49 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StrictMixedType;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateStrictMixedType extends StrictMixedType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<StrictMixedType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		StrictMixedType $bound,
+		?Type $default,
+	)
+	{
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	public function isSuperTypeOfMixed(MixedType $type): IsSuperTypeOfResult
+	{
+		return $this->isSuperTypeOf($type);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+}
diff --git a/src/Type/Generic/TemplateStringType.php b/src/Type/Generic/TemplateStringType.php
new file mode 100644
index 00000000..0515258d
--- /dev/null
+++ b/src/Type/Generic/TemplateStringType.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\StringType;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use PHPStan\Type\Type;
+
+/** @api */
+final class TemplateStringType extends StringType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<StringType> */
+	use TemplateTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		StringType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct();
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateType.php b/src/Type/Generic/TemplateType.php
new file mode 100644
index 00000000..77d6892c
--- /dev/null
+++ b/src/Type/Generic/TemplateType.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\Type;
+
+/** @api */
+interface TemplateType extends CompoundType
+{
+
+	/** @return non-empty-string */
+	public function getName(): string;
+
+	public function getScope(): TemplateTypeScope;
+
+	public function getBound(): Type;
+
+	public function getDefault(): ?Type;
+
+	public function toArgument(): TemplateType;
+
+	public function isArgument(): bool;
+
+	public function isValidVariance(Type $a, Type $b): IsSuperTypeOfResult;
+
+	public function getVariance(): TemplateTypeVariance;
+
+	public function getStrategy(): TemplateTypeStrategy;
+
+}
diff --git a/src/Type/Generic/TemplateTypeArgumentStrategy.php b/src/Type/Generic/TemplateTypeArgumentStrategy.php
new file mode 100644
index 00000000..78f4f017
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeArgumentStrategy.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function array_merge;
+use function sprintf;
+
+/**
+ * Template type strategy suitable for return type acceptance contexts
+ */
+final class TemplateTypeArgumentStrategy implements TemplateTypeStrategy
+{
+
+	public function accepts(TemplateType $left, Type $right, bool $strictTypes): AcceptsResult
+	{
+		if ($right instanceof CompoundType) {
+			$accepts = $right->isAcceptedBy($left, $strictTypes);
+		} else {
+			$accepts = $left->getBound()->accepts($right, $strictTypes)
+				->and(AcceptsResult::createMaybe());
+			if ($accepts->maybe()) {
+				$verbosity = VerbosityLevel::getRecommendedLevelByType($left, $right);
+
+				return new AcceptsResult($accepts->result, array_merge($accepts->reasons, [
+					sprintf(
+						'Type %s is not always the same as %s. It breaks the contract for some argument types, typically subtypes.',
+						$right->describe($verbosity),
+						$left->getName(),
+					),
+				]));
+			}
+		}
+
+		return $accepts;
+	}
+
+	public function isArgument(): bool
+	{
+		return true;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeFactory.php b/src/Type/Generic/TemplateTypeFactory.php
new file mode 100644
index 00000000..8f735c82
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeFactory.php
@@ -0,0 +1,119 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDoc\Tag\TemplateTag;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\KeyOfType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectShapeType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function get_class;
+
+final class TemplateTypeFactory
+{
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public static function create(TemplateTypeScope $scope, string $name, ?Type $bound, TemplateTypeVariance $variance, ?TemplateTypeStrategy $strategy = null, ?Type $default = null): TemplateType
+	{
+		$strategy ??= new TemplateTypeParameterStrategy();
+
+		if ($bound === null) {
+			return new TemplateMixedType($scope, $strategy, $variance, $name, new MixedType(true), $default);
+		}
+
+		$boundClass = get_class($bound);
+		if ($bound instanceof ObjectType && ($boundClass === ObjectType::class || $bound instanceof TemplateType)) {
+			return new TemplateObjectType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof GenericObjectType && ($boundClass === GenericObjectType::class || $bound instanceof TemplateType)) {
+			return new TemplateGenericObjectType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ObjectWithoutClassType && ($boundClass === ObjectWithoutClassType::class || $bound instanceof TemplateType)) {
+			return new TemplateObjectWithoutClassType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ArrayType && ($boundClass === ArrayType::class || $bound instanceof TemplateType)) {
+			return new TemplateArrayType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ConstantArrayType && ($boundClass === ConstantArrayType::class || $bound instanceof TemplateType)) {
+			return new TemplateConstantArrayType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ObjectShapeType && ($boundClass === ObjectShapeType::class || $bound instanceof TemplateType)) {
+			return new TemplateObjectShapeType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof StringType && ($boundClass === StringType::class || $bound instanceof TemplateType)) {
+			return new TemplateStringType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ConstantStringType && ($boundClass === ConstantStringType::class || $bound instanceof TemplateType)) {
+			return new TemplateConstantStringType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof IntegerType && ($boundClass === IntegerType::class || $bound instanceof TemplateType)) {
+			return new TemplateIntegerType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof ConstantIntegerType && ($boundClass === ConstantIntegerType::class || $bound instanceof TemplateType)) {
+			return new TemplateConstantIntegerType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof FloatType && ($boundClass === FloatType::class || $bound instanceof TemplateType)) {
+			return new TemplateFloatType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof BooleanType && ($boundClass === BooleanType::class || $bound instanceof TemplateType)) {
+			return new TemplateBooleanType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof MixedType && ($boundClass === MixedType::class || $bound instanceof TemplateType)) {
+			return new TemplateMixedType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof UnionType) {
+			if ($boundClass === UnionType::class || $bound instanceof TemplateUnionType) {
+				return new TemplateUnionType($scope, $strategy, $variance, $name, $bound, $default);
+			}
+
+			if ($bound instanceof BenevolentUnionType) {
+				return new TemplateBenevolentUnionType($scope, $strategy, $variance, $name, $bound, $default);
+			}
+		}
+
+		if ($bound instanceof IntersectionType) {
+			return new TemplateIntersectionType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		if ($bound instanceof KeyOfType && ($boundClass === KeyOfType::class || $bound instanceof TemplateType)) {
+			return new TemplateKeyOfType($scope, $strategy, $variance, $name, $bound, $default);
+		}
+
+		return new TemplateMixedType($scope, $strategy, $variance, $name, new MixedType(true), $default);
+	}
+
+	public static function fromTemplateTag(TemplateTypeScope $scope, TemplateTag $tag): TemplateType
+	{
+		return self::create($scope, $tag->getName(), $tag->getBound(), $tag->getVariance(), null, $tag->getDefault());
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeHelper.php b/src/Type/Generic/TemplateTypeHelper.php
new file mode 100644
index 00000000..012fae54
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeHelper.php
@@ -0,0 +1,152 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Reflection\ParametersAcceptor;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\NonAcceptingNeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\VerbosityLevel;
+
+final class TemplateTypeHelper
+{
+
+	/**
+	 * Replaces template types with standin types
+	 */
+	public static function resolveTemplateTypes(
+		Type $type,
+		TemplateTypeMap $standins,
+		TemplateTypeVarianceMap $callSiteVariances,
+		TemplateTypeVariance $positionVariance,
+		bool $keepErrorTypes = false,
+	): Type
+	{
+		$references = $type->getReferencedTemplateTypes($positionVariance);
+
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($standins, $references, $callSiteVariances, $keepErrorTypes): Type {
+			if ($type instanceof TemplateType && !$type->isArgument()) {
+				$newType = $standins->getType($type->getName());
+
+				$variance = TemplateTypeVariance::createInvariant();
+				foreach ($references as $reference) {
+					// this uses identity to distinguish between different occurrences of the same template type
+					// see https://github.com/phpstan/phpstan-src/pull/2485#discussion_r1328555397 for details
+					if ($reference->getType() === $type) {
+						$variance = $reference->getPositionVariance();
+						break;
+					}
+				}
+
+				if ($newType === null) {
+					return $traverse($type);
+				}
+
+				if ($newType instanceof ErrorType && !$keepErrorTypes) {
+					return $traverse($type->getDefault() ?? $type->getBound());
+				}
+
+				$callSiteVariance = $callSiteVariances->getVariance($type->getName());
+				if ($callSiteVariance === null || $callSiteVariance->invariant()) {
+					return $newType;
+				}
+
+				if (!$callSiteVariance->covariant() && $variance->covariant()) {
+					return $traverse($type->getBound());
+				}
+
+				if (!$callSiteVariance->contravariant() && $variance->contravariant()) {
+					return new NonAcceptingNeverType();
+				}
+
+				return $newType;
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	public static function resolveToDefaults(Type $type): Type
+	{
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse): Type {
+			if ($type instanceof TemplateType) {
+				return $traverse($type->getDefault() ?? $type->getBound());
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	public static function resolveToBounds(Type $type): Type
+	{
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse): Type {
+			if ($type instanceof TemplateType) {
+				return $traverse($type->getBound());
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	/**
+	 * @template T of Type
+	 * @param T $type
+	 * @return T
+	 */
+	public static function toArgument(Type $type): Type
+	{
+		$ownedTemplates = [];
+
+		/** @var T */
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$ownedTemplates): Type {
+			if ($type instanceof ParametersAcceptor) {
+				$templateTypeMap = $type->getTemplateTypeMap();
+
+				foreach ($type->getParameters() as $parameter) {
+					$parameterType = $parameter->getType();
+					if (!($parameterType instanceof TemplateType) || !$templateTypeMap->hasType($parameterType->getName())) {
+						continue;
+					}
+
+					$ownedTemplates[] = $parameterType;
+				}
+
+				$returnType = $type->getReturnType();
+
+				if ($returnType instanceof TemplateType && $templateTypeMap->hasType($returnType->getName())) {
+					$ownedTemplates[] = $returnType;
+				}
+			}
+
+			foreach ($ownedTemplates as $ownedTemplate) {
+				if ($ownedTemplate === $type) {
+					return $traverse($type);
+				}
+			}
+
+			if ($type instanceof TemplateType) {
+				return $traverse($type->toArgument());
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	public static function generalizeInferredTemplateType(TemplateType $templateType, Type $type): Type
+	{
+		if (!$templateType->getVariance()->covariant()) {
+			$isArrayKey = $templateType->getBound()->describe(VerbosityLevel::precise()) === '(int|string)';
+			if ($type->isScalar()->yes() && $isArrayKey) {
+				$type = $type->generalize(GeneralizePrecision::templateArgument());
+			} elseif ($type->isConstantValue()->yes() && (!$templateType->getBound()->isScalar()->yes() || $isArrayKey)) {
+				$type = $type->generalize(GeneralizePrecision::templateArgument());
+			}
+		}
+
+		return $type;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeMap.php b/src/Type/Generic/TemplateTypeMap.php
new file mode 100644
index 00000000..87b9b650
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeMap.php
@@ -0,0 +1,221 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use function array_key_exists;
+use function count;
+
+/**
+ * @api
+ */
+final class TemplateTypeMap
+{
+
+	private static ?TemplateTypeMap $empty = null;
+
+	private ?TemplateTypeMap $resolvedToBounds = null;
+
+	/**
+	 * @api
+	 * @param array<string, Type> $types
+	 * @param array<string, Type> $lowerBoundTypes
+	 */
+	public function __construct(private array $types, private array $lowerBoundTypes = [])
+	{
+	}
+
+	public function convertToLowerBoundTypes(): self
+	{
+		$lowerBoundTypes = $this->types;
+		foreach ($this->lowerBoundTypes as $name => $type) {
+			if (isset($lowerBoundTypes[$name])) {
+				$intersection = TypeCombinator::intersect($lowerBoundTypes[$name], $type);
+				if ($intersection instanceof NeverType) {
+					continue;
+				}
+				$lowerBoundTypes[$name] = $intersection;
+			} else {
+				$lowerBoundTypes[$name] = $type;
+			}
+		}
+
+		return new self([], $lowerBoundTypes);
+	}
+
+	public static function createEmpty(): self
+	{
+		$empty = self::$empty;
+
+		if ($empty !== null) {
+			return $empty;
+		}
+
+		$empty = new self([], []);
+		self::$empty = $empty;
+
+		return $empty;
+	}
+
+	public function isEmpty(): bool
+	{
+		return $this->count() === 0;
+	}
+
+	public function count(): int
+	{
+		return count($this->types + $this->lowerBoundTypes);
+	}
+
+	/** @return array<string, Type> */
+	public function getTypes(): array
+	{
+		$types = $this->types;
+		foreach ($this->lowerBoundTypes as $name => $type) {
+			if (array_key_exists($name, $types)) {
+				continue;
+			}
+
+			$types[$name] = $type;
+		}
+
+		return $types;
+	}
+
+	public function hasType(string $name): bool
+	{
+		return array_key_exists($name, $this->getTypes());
+	}
+
+	public function getType(string $name): ?Type
+	{
+		return $this->getTypes()[$name] ?? null;
+	}
+
+	public function unsetType(string $name): self
+	{
+		if (!$this->hasType($name)) {
+			return $this;
+		}
+
+		$types = $this->types;
+		$lowerBoundTypes = $this->lowerBoundTypes;
+
+		unset($types[$name]);
+		unset($lowerBoundTypes[$name]);
+
+		if (count($types) === 0 && count($lowerBoundTypes) === 0) {
+			return self::createEmpty();
+		}
+
+		return new self($types, $lowerBoundTypes);
+	}
+
+	public function union(self $other): self
+	{
+		$result = $this->types;
+
+		foreach ($other->types as $name => $type) {
+			if (isset($result[$name])) {
+				$result[$name] = TypeCombinator::union($result[$name], $type);
+			} else {
+				$result[$name] = $type;
+			}
+		}
+
+		$resultLowerBoundTypes = $this->lowerBoundTypes;
+		foreach ($other->lowerBoundTypes as $name => $type) {
+			if (isset($resultLowerBoundTypes[$name])) {
+				$intersection = TypeCombinator::intersect($resultLowerBoundTypes[$name], $type);
+				if ($intersection instanceof NeverType) {
+					continue;
+				}
+				$resultLowerBoundTypes[$name] = $intersection;
+			} else {
+				$resultLowerBoundTypes[$name] = $type;
+			}
+		}
+
+		return new self($result, $resultLowerBoundTypes);
+	}
+
+	public function benevolentUnion(self $other): self
+	{
+		$result = $this->types;
+
+		foreach ($other->types as $name => $type) {
+			if (isset($result[$name])) {
+				$result[$name] = TypeUtils::toBenevolentUnion(TypeCombinator::union($result[$name], $type));
+			} else {
+				$result[$name] = $type;
+			}
+		}
+
+		$resultLowerBoundTypes = $this->lowerBoundTypes;
+		foreach ($other->lowerBoundTypes as $name => $type) {
+			if (isset($resultLowerBoundTypes[$name])) {
+				$intersection = TypeCombinator::intersect($resultLowerBoundTypes[$name], $type);
+				if ($intersection instanceof NeverType) {
+					continue;
+				}
+				$resultLowerBoundTypes[$name] = $intersection;
+			} else {
+				$resultLowerBoundTypes[$name] = $type;
+			}
+		}
+
+		return new self($result, $resultLowerBoundTypes);
+	}
+
+	public function intersect(self $other): self
+	{
+		$result = $this->types;
+
+		foreach ($other->types as $name => $type) {
+			if (isset($result[$name])) {
+				$result[$name] = TypeCombinator::intersect($result[$name], $type);
+			} else {
+				$result[$name] = $type;
+			}
+		}
+
+		$resultLowerBoundTypes = $this->lowerBoundTypes;
+		foreach ($other->lowerBoundTypes as $name => $type) {
+			if (isset($resultLowerBoundTypes[$name])) {
+				$resultLowerBoundTypes[$name] = TypeCombinator::union($resultLowerBoundTypes[$name], $type);
+			} else {
+				$resultLowerBoundTypes[$name] = $type;
+			}
+		}
+
+		return new self($result, $resultLowerBoundTypes);
+	}
+
+	/** @param callable(string,Type):Type $cb */
+	public function map(callable $cb): self
+	{
+		$types = [];
+		foreach ($this->getTypes() as $name => $type) {
+			$types[$name] = $cb($name, $type);
+		}
+
+		return new self($types);
+	}
+
+	public function resolveToBounds(): self
+	{
+		if ($this->resolvedToBounds !== null) {
+			return $this->resolvedToBounds;
+		}
+		return $this->resolvedToBounds = $this->map(static fn (string $name, Type $type): Type => TypeTraverser::map(
+			$type,
+			static fn (Type $type, callable $traverse): Type => $type instanceof TemplateType ? $traverse($type->getDefault() ?? $type->getBound()) : $traverse($type),
+		));
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeParameterStrategy.php b/src/Type/Generic/TemplateTypeParameterStrategy.php
new file mode 100644
index 00000000..a01758be
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeParameterStrategy.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Type;
+
+/**
+ * Template type strategy suitable for parameter type acceptance contexts
+ */
+final class TemplateTypeParameterStrategy implements TemplateTypeStrategy
+{
+
+	public function accepts(TemplateType $left, Type $right, bool $strictTypes): AcceptsResult
+	{
+		if ($right instanceof CompoundType) {
+			return $right->isAcceptedBy($left, $strictTypes);
+		}
+
+		return $left->getBound()->accepts($right, $strictTypes);
+	}
+
+	public function isArgument(): bool
+	{
+		return false;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeReference.php b/src/Type/Generic/TemplateTypeReference.php
new file mode 100644
index 00000000..cb9c0cac
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeReference.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+final class TemplateTypeReference
+{
+
+	public function __construct(private TemplateType $type, private TemplateTypeVariance $positionVariance)
+	{
+	}
+
+	public function getType(): TemplateType
+	{
+		return $this->type;
+	}
+
+	public function getPositionVariance(): TemplateTypeVariance
+	{
+		return $this->positionVariance;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeScope.php b/src/Type/Generic/TemplateTypeScope.php
new file mode 100644
index 00000000..24e53a6d
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeScope.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use function sprintf;
+
+final class TemplateTypeScope
+{
+
+	public static function createWithAnonymousFunction(): self
+	{
+		return new self(null, null);
+	}
+
+	public static function createWithFunction(string $functionName): self
+	{
+		return new self(null, $functionName);
+	}
+
+	public static function createWithMethod(string $className, string $functionName): self
+	{
+		return new self($className, $functionName);
+	}
+
+	public static function createWithClass(string $className): self
+	{
+		return new self($className, null);
+	}
+
+	private function __construct(private ?string $className, private ?string $functionName)
+	{
+	}
+
+	/** @api */
+	public function getClassName(): ?string
+	{
+		return $this->className;
+	}
+
+	/** @api */
+	public function getFunctionName(): ?string
+	{
+		return $this->functionName;
+	}
+
+	/** @api */
+	public function equals(self $other): bool
+	{
+		return $this->className === $other->className
+			&& $this->functionName === $other->functionName;
+	}
+
+	/** @api */
+	public function describe(): string
+	{
+		if ($this->className === null && $this->functionName === null) {
+			return 'anonymous function';
+		}
+
+		if ($this->className === null) {
+			return sprintf('function %s()', $this->functionName);
+		}
+
+		if ($this->functionName === null) {
+			return sprintf('class %s', $this->className);
+		}
+
+		return sprintf('method %s::%s()', $this->className, $this->functionName);
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeStrategy.php b/src/Type/Generic/TemplateTypeStrategy.php
new file mode 100644
index 00000000..2d8e136e
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeStrategy.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\Type;
+
+interface TemplateTypeStrategy
+{
+
+	public function accepts(TemplateType $left, Type $right, bool $strictTypes): AcceptsResult;
+
+	public function isArgument(): bool;
+
+}
diff --git a/src/Type/Generic/TemplateTypeTrait.php b/src/Type/Generic/TemplateTypeTrait.php
new file mode 100644
index 00000000..6019a6ac
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeTrait.php
@@ -0,0 +1,370 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\SubtractableType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/**
+ * @template TBound of Type
+ */
+trait TemplateTypeTrait
+{
+
+	/** @var non-empty-string */
+	private string $name;
+
+	private TemplateTypeScope $scope;
+
+	private TemplateTypeStrategy $strategy;
+
+	private TemplateTypeVariance $variance;
+
+	/** @var TBound */
+	private Type $bound;
+
+	private ?Type $default;
+
+	/** @return non-empty-string */
+	public function getName(): string
+	{
+		return $this->name;
+	}
+
+	public function getScope(): TemplateTypeScope
+	{
+		return $this->scope;
+	}
+
+	/** @return TBound */
+	public function getBound(): Type
+	{
+		return $this->bound;
+	}
+
+	public function getDefault(): ?Type
+	{
+		return $this->default;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$basicDescription = function () use ($level): string {
+			// @phpstan-ignore booleanAnd.alwaysFalse, instanceof.alwaysFalse, booleanAnd.alwaysFalse, instanceof.alwaysFalse, instanceof.alwaysTrue
+			if ($this->bound instanceof MixedType && $this->bound->getSubtractedType() === null && !$this->bound instanceof TemplateMixedType) {
+				$boundDescription = '';
+			} else {
+				$boundDescription = sprintf(' of %s', $this->bound->describe($level));
+			}
+			$defaultDescription = $this->default !== null ? sprintf(' = %s', $this->default->describe($level)) : '';
+			return sprintf(
+				'%s%s%s',
+				$this->name,
+				$boundDescription,
+				$defaultDescription,
+			);
+		};
+
+		return $level->handle(
+			$basicDescription,
+			$basicDescription,
+			fn (): string => sprintf('%s (%s, %s)', $basicDescription(), $this->scope->describe(), $this->isArgument() ? 'argument' : 'parameter'),
+		);
+	}
+
+	public function isArgument(): bool
+	{
+		return $this->strategy->isArgument();
+	}
+
+	public function toArgument(): TemplateType
+	{
+		return new self(
+			$this->scope,
+			new TemplateTypeArgumentStrategy(),
+			$this->variance,
+			$this->name,
+			TemplateTypeHelper::toArgument($this->getBound()),
+			$this->default !== null ? TemplateTypeHelper::toArgument($this->default) : null,
+		);
+	}
+
+	public function isValidVariance(Type $a, Type $b): IsSuperTypeOfResult
+	{
+		return $this->variance->isValidVariance($this, $a, $b);
+	}
+
+	public function subtract(Type $typeToRemove): Type
+	{
+		$removedBound = TypeCombinator::remove($this->getBound(), $typeToRemove);
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$removedBound,
+			$this->getVariance(),
+			$this->getStrategy(),
+			$this->getDefault(),
+		);
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		$bound = $this->getBound();
+		if (!$bound instanceof SubtractableType) { // @phpstan-ignore instanceof.alwaysTrue
+			return $this;
+		}
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$bound->getTypeWithoutSubtractedType(),
+			$this->getVariance(),
+			$this->getStrategy(),
+			$this->getDefault(),
+		);
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		$bound = $this->getBound();
+		if (!$bound instanceof SubtractableType) { // @phpstan-ignore instanceof.alwaysTrue
+			return $this;
+		}
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$bound->changeSubtractedType($subtractedType),
+			$this->getVariance(),
+			$this->getStrategy(),
+			$this->getDefault(),
+		);
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		$bound = $this->getBound();
+		if (!$bound instanceof SubtractableType) { // @phpstan-ignore instanceof.alwaysTrue
+			return null;
+		}
+
+		return $bound->getSubtractedType();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $type->scope->equals($this->scope)
+			&& $type->name === $this->name
+			&& $this->bound->equals($type->bound)
+			&& (
+				($this->default === null && $type->default === null)
+				|| ($this->default !== null && $type->default !== null && $this->default->equals($type->default))
+			);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		/** @var TBound $bound */
+		$bound = $this->getBound();
+		if (
+			!$acceptingType instanceof $bound
+			&& !$this instanceof $acceptingType
+			&& !$acceptingType instanceof TemplateType
+			&& ($acceptingType instanceof UnionType || $acceptingType instanceof IntersectionType)
+		) {
+			return $acceptingType->accepts($this, $strictTypes);
+		}
+
+		if (!$acceptingType instanceof TemplateType) {
+			return $acceptingType->accepts($this->getBound(), $strictTypes);
+		}
+
+		if ($this->getScope()->equals($acceptingType->getScope()) && $this->getName() === $acceptingType->getName()) {
+			return $acceptingType->getBound()->accepts($this->getBound(), $strictTypes);
+		}
+
+		return $acceptingType->getBound()->accepts($this->getBound(), $strictTypes)
+			->and(new AcceptsResult(TrinaryLogic::createMaybe(), []));
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return $this->strategy->accepts($this, $type, $strictTypes);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof TemplateType || $type instanceof IntersectionType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof NeverType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return $this->getBound()->isSuperTypeOf($type)
+			->and(IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function isSubTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		/** @var TBound $bound */
+		$bound = $this->getBound();
+		if (
+			!$type instanceof $bound
+			&& !$this instanceof $type
+			&& !$type instanceof TemplateType
+			&& ($type instanceof UnionType || $type instanceof IntersectionType)
+		) {
+			return $type->isSuperTypeOf($this);
+		}
+
+		if (!$type instanceof TemplateType) {
+			return $type->isSuperTypeOf($this->getBound());
+		}
+
+		if ($this->getScope()->equals($type->getScope()) && $this->getName() === $type->getName()) {
+			return $type->getBound()->isSuperTypeOf($this->getBound());
+		}
+
+		return $type->getBound()->isSuperTypeOf($this->getBound())
+			->and(IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if (
+			$receivedType instanceof TemplateType
+			&& $this->getBound()->isSuperTypeOf($receivedType->getBound())->yes()
+		) {
+			return new TemplateTypeMap([
+				$this->name => $receivedType,
+			]);
+		}
+
+		$map = $this->getBound()->inferTemplateTypes($receivedType);
+		$resolvedBound = TypeUtils::resolveLateResolvableTypes(TemplateTypeHelper::resolveTemplateTypes(
+			$this->getBound(),
+			$map,
+			TemplateTypeVarianceMap::createEmpty(),
+			TemplateTypeVariance::createStatic(),
+		));
+		if ($resolvedBound->isSuperTypeOf($receivedType)->yes()) {
+			return (new TemplateTypeMap([
+				$this->name => $receivedType,
+			]))->union($map);
+		}
+
+		return $map;
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return [new TemplateTypeReference($this, $positionVariance)];
+	}
+
+	public function getVariance(): TemplateTypeVariance
+	{
+		return $this->variance;
+	}
+
+	public function getStrategy(): TemplateTypeStrategy
+	{
+		return $this->strategy;
+	}
+
+	protected function shouldGeneralizeInferredType(): bool
+	{
+		return true;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$bound = $cb($this->getBound());
+		$default = $this->getDefault() !== null ? $cb($this->getDefault()) : null;
+
+		if ($this->getBound() === $bound && $this->getDefault() === $default) {
+			return $this;
+		}
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$bound,
+			$this->getVariance(),
+			$this->getStrategy(),
+			$default,
+		);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof TemplateType) {
+			return $this;
+		}
+
+		$bound = $cb($this->getBound(), $right->getBound());
+		$default = $this->getDefault() !== null && $right->getDefault() !== null ? $cb($this->getDefault(), $right->getDefault()) : null;
+
+		if ($this->getBound() === $bound && $this->getDefault() === $default) {
+			return $this;
+		}
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$bound,
+			$this->getVariance(),
+			$this->getStrategy(),
+			$default,
+		);
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		$bound = TypeCombinator::remove($this->getBound(), $typeToRemove);
+		if ($this->getBound() === $bound) {
+			return null;
+		}
+
+		return TemplateTypeFactory::create(
+			$this->getScope(),
+			$this->getName(),
+			$bound,
+			$this->getVariance(),
+			$this->getStrategy(),
+			$this->getDefault(),
+		);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode($this->name);
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeVariance.php b/src/Type/Generic/TemplateTypeVariance.php
new file mode 100644
index 00000000..d379bc29
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeVariance.php
@@ -0,0 +1,240 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use function sprintf;
+
+/**
+ * @api
+ */
+final class TemplateTypeVariance
+{
+
+	private const INVARIANT = 1;
+	private const COVARIANT = 2;
+	private const CONTRAVARIANT = 3;
+	private const STATIC = 4;
+	private const BIVARIANT = 5;
+
+	/** @var self[] */
+	private static array $registry;
+
+	private function __construct(private int $value)
+	{
+	}
+
+	private static function create(int $value): self
+	{
+		self::$registry[$value] ??= new self($value);
+		return self::$registry[$value];
+	}
+
+	public static function createInvariant(): self
+	{
+		return self::create(self::INVARIANT);
+	}
+
+	public static function createCovariant(): self
+	{
+		return self::create(self::COVARIANT);
+	}
+
+	public static function createContravariant(): self
+	{
+		return self::create(self::CONTRAVARIANT);
+	}
+
+	public static function createStatic(): self
+	{
+		return self::create(self::STATIC);
+	}
+
+	public static function createBivariant(): self
+	{
+		return self::create(self::BIVARIANT);
+	}
+
+	public function invariant(): bool
+	{
+		return $this->value === self::INVARIANT;
+	}
+
+	public function covariant(): bool
+	{
+		return $this->value === self::COVARIANT;
+	}
+
+	public function contravariant(): bool
+	{
+		return $this->value === self::CONTRAVARIANT;
+	}
+
+	public function static(): bool
+	{
+		return $this->value === self::STATIC;
+	}
+
+	public function bivariant(): bool
+	{
+		return $this->value === self::BIVARIANT;
+	}
+
+	public function compose(self $other): self
+	{
+		if ($this->contravariant()) {
+			if ($other->contravariant()) {
+				return self::createCovariant();
+			}
+			if ($other->covariant()) {
+				return self::createContravariant();
+			}
+			if ($other->bivariant()) {
+				return self::createBivariant();
+			}
+			return self::createInvariant();
+		}
+
+		if ($this->covariant()) {
+			if ($other->contravariant()) {
+				return self::createContravariant();
+			}
+			if ($other->covariant()) {
+				return self::createCovariant();
+			}
+			if ($other->bivariant()) {
+				return self::createBivariant();
+			}
+			return self::createInvariant();
+		}
+
+		if ($this->invariant()) {
+			return self::createInvariant();
+		}
+
+		if ($this->bivariant()) {
+			return self::createBivariant();
+		}
+
+		return $other;
+	}
+
+	public function isValidVariance(TemplateType $templateType, Type $a, Type $b): IsSuperTypeOfResult
+	{
+		if ($b instanceof NeverType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($a instanceof MixedType && !$a instanceof TemplateType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($a instanceof BenevolentUnionType) {
+			if (!$a->isSuperTypeOf($b)->no()) {
+				return IsSuperTypeOfResult::createYes();
+			}
+		}
+
+		if ($b instanceof BenevolentUnionType) {
+			if (!$b->isSuperTypeOf($a)->no()) {
+				return IsSuperTypeOfResult::createYes();
+			}
+		}
+
+		if ($b instanceof MixedType && !$b instanceof TemplateType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($this->invariant()) {
+			$result = $a->equals($b);
+			$reasons = [];
+			if (!$result) {
+				if (
+					$templateType->getScope()->getClassName() !== null
+					&& $a->isSuperTypeOf($b)->yes()
+				) {
+					$reasons[] = sprintf(
+						'Template type %s on class %s is not covariant. Learn more: <fg=cyan>https://phpstan.org/blog/whats-up-with-template-covariant</>',
+						$templateType->getName(),
+						$templateType->getScope()->getClassName(),
+					);
+				}
+			}
+
+			return new IsSuperTypeOfResult(TrinaryLogic::createFromBoolean($result), $reasons);
+		}
+
+		if ($this->covariant()) {
+			return $a->isSuperTypeOf($b);
+		}
+
+		if ($this->contravariant()) {
+			return $b->isSuperTypeOf($a);
+		}
+
+		if ($this->bivariant()) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+	public function equals(self $other): bool
+	{
+		return $other->value === $this->value;
+	}
+
+	public function validPosition(self $other): bool
+	{
+		return $other->value === $this->value
+			|| $other->invariant()
+			|| $this->bivariant()
+			|| $this->static();
+	}
+
+	public function describe(): string
+	{
+		switch ($this->value) {
+			case self::INVARIANT:
+				return 'invariant';
+			case self::COVARIANT:
+				return 'covariant';
+			case self::CONTRAVARIANT:
+				return 'contravariant';
+			case self::STATIC:
+				return 'static';
+			case self::BIVARIANT:
+				return 'bivariant';
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+	/**
+	 * @return GenericTypeNode::VARIANCE_*
+	 */
+	public function toPhpDocNodeVariance(): string
+	{
+		switch ($this->value) {
+			case self::INVARIANT:
+				return GenericTypeNode::VARIANCE_INVARIANT;
+			case self::COVARIANT:
+				return GenericTypeNode::VARIANCE_COVARIANT;
+			case self::CONTRAVARIANT:
+				return GenericTypeNode::VARIANCE_CONTRAVARIANT;
+			case self::BIVARIANT:
+				return GenericTypeNode::VARIANCE_BIVARIANT;
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Type/Generic/TemplateTypeVarianceMap.php b/src/Type/Generic/TemplateTypeVarianceMap.php
new file mode 100644
index 00000000..c2f029f2
--- /dev/null
+++ b/src/Type/Generic/TemplateTypeVarianceMap.php
@@ -0,0 +1,54 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use function array_key_exists;
+
+/**
+ * @api
+ */
+final class TemplateTypeVarianceMap
+{
+
+	private static ?TemplateTypeVarianceMap $empty = null;
+
+	/**
+	 * @api
+	 * @param array<string, TemplateTypeVariance> $variances
+	 */
+	public function __construct(private array $variances)
+	{
+	}
+
+	public static function createEmpty(): self
+	{
+		$empty = self::$empty;
+
+		if ($empty !== null) {
+			return $empty;
+		}
+
+		$empty = new self([]);
+		self::$empty = $empty;
+
+		return $empty;
+	}
+
+	/** @return array<string, TemplateTypeVariance> */
+	public function getVariances(): array
+	{
+		return $this->variances;
+	}
+
+	public function hasVariance(string $name): bool
+	{
+		return array_key_exists($name, $this->getVariances());
+	}
+
+	public function getVariance(string $name): ?TemplateTypeVariance
+	{
+		return $this->getVariances()[$name] ?? null;
+	}
+
+}
diff --git a/src/Type/Generic/TemplateUnionType.php b/src/Type/Generic/TemplateUnionType.php
new file mode 100644
index 00000000..f4fc9248
--- /dev/null
+++ b/src/Type/Generic/TemplateUnionType.php
@@ -0,0 +1,55 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+
+/** @api */
+final class TemplateUnionType extends UnionType implements TemplateType
+{
+
+	/** @use TemplateTypeTrait<UnionType> */
+	use TemplateTypeTrait;
+
+	/**
+	 * @param non-empty-string $name
+	 */
+	public function __construct(
+		TemplateTypeScope $scope,
+		TemplateTypeStrategy $templateTypeStrategy,
+		TemplateTypeVariance $templateTypeVariance,
+		string $name,
+		UnionType $bound,
+		?Type $default,
+	)
+	{
+		parent::__construct($bound->getTypes());
+
+		$this->scope = $scope;
+		$this->strategy = $templateTypeStrategy;
+		$this->variance = $templateTypeVariance;
+		$this->name = $name;
+		$this->bound = $bound;
+		$this->default = $default;
+	}
+
+	public function filterTypes(callable $filterCb): Type
+	{
+		$result = parent::filterTypes($filterCb);
+		if (!$result instanceof TemplateType) {
+			return TemplateTypeFactory::create(
+				$this->getScope(),
+				$this->getName(),
+				$result,
+				$this->getVariance(),
+				$this->getStrategy(),
+				$this->getDefault(),
+			);
+		}
+
+		return $result;
+	}
+
+}
diff --git a/src/Type/Generic/TypeProjectionHelper.php b/src/Type/Generic/TypeProjectionHelper.php
new file mode 100644
index 00000000..e9d3bd1c
--- /dev/null
+++ b/src/Type/Generic/TypeProjectionHelper.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Type\Generic;
+return;
+
+use PHPStan\Type\Type;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+final class TypeProjectionHelper
+{
+
+	public static function describe(
+		Type $type,
+		?TemplateTypeVariance $variance,
+		VerbosityLevel $level,
+	): string
+	{
+		$describedType = $type->describe($level);
+
+		if ($variance === null || $variance->invariant()) {
+			return $describedType;
+		}
+
+		if ($variance->bivariant()) {
+			return '*';
+		}
+
+		return sprintf('%s %s', $variance->describe(), $describedType);
+	}
+
+}
diff --git a/src/Type/Helper/GetTemplateTypeType.php b/src/Type/Helper/GetTemplateTypeType.php
new file mode 100644
index 00000000..e2d86466
--- /dev/null
+++ b/src/Type/Helper/GetTemplateTypeType.php
@@ -0,0 +1,107 @@
+<?php 
+
+namespace PHPStan\Type\Helper;
+return;
+
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\LateResolvableType;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\VerbosityLevel;
+use function sprintf;
+
+/** @api */
+final class GetTemplateTypeType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/**
+	 * @param class-string $ancestorClassName
+	 */
+	public function __construct(private Type $type, private string $ancestorClassName, private string $templateTypeName)
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->type->getReferencedClasses();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return $this->type->getReferencedTemplateTypes($positionVariance);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->type->equals($type->type);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('template-type<%s, %s, %s>', $this->type->describe($level), $this->ancestorClassName, $this->templateTypeName);
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->type);
+	}
+
+	protected function getResult(): Type
+	{
+		return $this->type->getTemplateType($this->ancestorClassName, $this->templateTypeName);
+	}
+
+	/**
+	 * @param callable(Type): Type $cb
+	 */
+	public function traverse(callable $cb): Type
+	{
+		$type = $cb($this->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type, $this->ancestorClassName, $this->templateTypeName);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$type = $cb($this->type, $right->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type, $this->ancestorClassName, $this->templateTypeName);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new GenericTypeNode(
+			new IdentifierTypeNode('template-type'),
+			[
+				$this->type->toPhpDocNode(),
+				new IdentifierTypeNode($this->ancestorClassName),
+				new ConstTypeNode(new ConstExprStringNode($this->templateTypeName, ConstExprStringNode::SINGLE_QUOTED)),
+			],
+		);
+	}
+
+}
diff --git a/src/Type/IntegerRangeType.php b/src/Type/IntegerRangeType.php
new file mode 100644
index 00000000..fc98b97f
--- /dev/null
+++ b/src/Type/IntegerRangeType.php
@@ -0,0 +1,758 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use function array_filter;
+use function array_map;
+use function assert;
+use function ceil;
+use function count;
+use function floor;
+use function get_class;
+use function is_float;
+use function is_int;
+use function max;
+use function min;
+use function sprintf;
+use const PHP_INT_MAX;
+use const PHP_INT_MIN;
+
+/** @api */
+class IntegerRangeType extends IntegerType implements CompoundType
+{
+
+	private function __construct(private ?int $min, private ?int $max)
+	{
+		parent::__construct();
+		assert($min === null || $max === null || $min <= $max);
+		assert($min !== null || $max !== null);
+	}
+
+	public static function fromInterval(?int $min, ?int $max, int $shift = 0): Type
+	{
+		if ($min !== null && $max !== null) {
+			if ($min > $max) {
+				return new NeverType();
+			}
+			if ($min === $max) {
+				return new ConstantIntegerType($min + $shift);
+			}
+		}
+
+		if ($min === null && $max === null) {
+			return new IntegerType();
+		}
+
+		return (new self($min, $max))->shift($shift);
+	}
+
+	protected static function isDisjoint(?int $minA, ?int $maxA, ?int $minB, ?int $maxB, bool $touchingIsDisjoint = true): bool
+	{
+		$offset = $touchingIsDisjoint ? 0 : 1;
+		return $minA !== null && $maxB !== null && $minA > $maxB + $offset
+			|| $maxA !== null && $minB !== null && $maxA + $offset < $minB;
+	}
+
+	/**
+	 * Return the range of integers smaller than the given value
+	 *
+	 * @param int|float $value
+	 */
+	public static function createAllSmallerThan($value): Type
+	{
+		if (is_int($value)) {
+			return self::fromInterval(null, $value, -1);
+		}
+
+		if ($value > PHP_INT_MAX) {
+			return new IntegerType();
+		}
+
+		if ($value <= PHP_INT_MIN) {
+			return new NeverType();
+		}
+
+		return self::fromInterval(null, (int) ceil($value), -1);
+	}
+
+	/**
+	 * Return the range of integers smaller than or equal to the given value
+	 *
+	 * @param int|float $value
+	 */
+	public static function createAllSmallerThanOrEqualTo($value): Type
+	{
+		if (is_int($value)) {
+			return self::fromInterval(null, $value);
+		}
+
+		if ($value >= PHP_INT_MAX) {
+			return new IntegerType();
+		}
+
+		if ($value < PHP_INT_MIN) {
+			return new NeverType();
+		}
+
+		return self::fromInterval(null, (int) floor($value));
+	}
+
+	/**
+	 * Return the range of integers greater than the given value
+	 *
+	 * @param int|float $value
+	 */
+	public static function createAllGreaterThan($value): Type
+	{
+		if (is_int($value)) {
+			return self::fromInterval($value, null, 1);
+		}
+
+		if ($value < PHP_INT_MIN) {
+			return new IntegerType();
+		}
+
+		if ($value >= PHP_INT_MAX) {
+			return new NeverType();
+		}
+
+		return self::fromInterval((int) floor($value), null, 1);
+	}
+
+	/**
+	 * Return the range of integers greater than or equal to the given value
+	 *
+	 * @param int|float $value
+	 */
+	public static function createAllGreaterThanOrEqualTo($value): Type
+	{
+		if (is_int($value)) {
+			return self::fromInterval($value, null);
+		}
+
+		if ($value <= PHP_INT_MIN) {
+			return new IntegerType();
+		}
+
+		if ($value > PHP_INT_MAX) {
+			return new NeverType();
+		}
+
+		return self::fromInterval((int) ceil($value), null);
+	}
+
+	public function getMin(): ?int
+	{
+		return $this->min;
+	}
+
+	public function getMax(): ?int
+	{
+		return $this->max;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('int<%s, %s>', $this->min ?? 'min', $this->max ?? 'max');
+	}
+
+	public function shift(int $amount): Type
+	{
+		if ($amount === 0) {
+			return $this;
+		}
+
+		$min = $this->min;
+		$max = $this->max;
+
+		if ($amount < 0) {
+			if ($max !== null) {
+				if ($max < PHP_INT_MIN - $amount) {
+					return new NeverType();
+				}
+				$max += $amount;
+			}
+			if ($min !== null) {
+				$min = $min < PHP_INT_MIN - $amount ? null : $min + $amount;
+			}
+		} else {
+			if ($min !== null) {
+				if ($min > PHP_INT_MAX - $amount) {
+					return new NeverType();
+				}
+				$min += $amount;
+			}
+			if ($max !== null) {
+				$max = $max > PHP_INT_MAX - $amount ? null : $max + $amount;
+			}
+		}
+
+		return self::fromInterval($min, $max);
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof parent) {
+			return $this->isSuperTypeOf($type)->toAcceptsResult();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self || $type instanceof ConstantIntegerType) {
+			if ($type instanceof self) {
+				$typeMin = $type->min;
+				$typeMax = $type->max;
+			} else {
+				$typeMin = $type->getValue();
+				$typeMax = $type->getValue();
+			}
+
+			if (self::isDisjoint($this->min, $this->max, $typeMin, $typeMax)) {
+				return IsSuperTypeOfResult::createNo();
+			}
+
+			if (
+				($this->min === null || $typeMin !== null && $this->min <= $typeMin)
+				&& ($this->max === null || $typeMax !== null && $this->max >= $typeMax)
+			) {
+				return IsSuperTypeOfResult::createYes();
+			}
+
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof parent) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof parent) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		if ($otherType instanceof UnionType) {
+			return $this->isSubTypeOfUnionWithReason($otherType);
+		}
+
+		if ($otherType instanceof IntersectionType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	private function isSubTypeOfUnionWithReason(UnionType $otherType): IsSuperTypeOfResult
+	{
+		if ($this->min !== null && $this->max !== null) {
+			$matchingConstantIntegers = array_filter(
+				$otherType->getTypes(),
+				fn (Type $type): bool => $type instanceof ConstantIntegerType && $type->getValue() >= $this->min && $type->getValue() <= $this->max,
+			);
+
+			if (count($matchingConstantIntegers) === ($this->max - $this->min + 1)) {
+				return IsSuperTypeOfResult::createYes();
+			}
+		}
+
+		return IsSuperTypeOfResult::createNo()->or(...array_map(fn (Type $innerType) => $this->isSubTypeOf($innerType), $otherType->getTypes()));
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self && $this->min === $type->min && $this->max === $type->max;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return new IntegerType();
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($this->min === null) {
+			$minIsSmaller = TrinaryLogic::createYes();
+		} else {
+			$minIsSmaller = (new ConstantIntegerType($this->min))->isSmallerThan($otherType, $phpVersion);
+		}
+
+		if ($this->max === null) {
+			$maxIsSmaller = TrinaryLogic::createNo();
+		} else {
+			$maxIsSmaller = (new ConstantIntegerType($this->max))->isSmallerThan($otherType, $phpVersion);
+		}
+
+		// 0 can have different results in contrast to the interval edges, see https://3v4l.org/iGoti
+		$zeroInt = new ConstantIntegerType(0);
+		if (!$zeroInt->isSuperTypeOf($this)->no()) {
+			return TrinaryLogic::extremeIdentity(
+				$zeroInt->isSmallerThan($otherType, $phpVersion),
+				$minIsSmaller,
+				$maxIsSmaller,
+			);
+		}
+
+		return TrinaryLogic::extremeIdentity($minIsSmaller, $maxIsSmaller);
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($this->min === null) {
+			$minIsSmaller = TrinaryLogic::createYes();
+		} else {
+			$minIsSmaller = (new ConstantIntegerType($this->min))->isSmallerThanOrEqual($otherType, $phpVersion);
+		}
+
+		if ($this->max === null) {
+			$maxIsSmaller = TrinaryLogic::createNo();
+		} else {
+			$maxIsSmaller = (new ConstantIntegerType($this->max))->isSmallerThanOrEqual($otherType, $phpVersion);
+		}
+
+		// 0 can have different results in contrast to the interval edges, see https://3v4l.org/iGoti
+		$zeroInt = new ConstantIntegerType(0);
+		if (!$zeroInt->isSuperTypeOf($this)->no()) {
+			return TrinaryLogic::extremeIdentity(
+				$zeroInt->isSmallerThanOrEqual($otherType, $phpVersion),
+				$minIsSmaller,
+				$maxIsSmaller,
+			);
+		}
+
+		return TrinaryLogic::extremeIdentity($minIsSmaller, $maxIsSmaller);
+	}
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($this->min === null) {
+			$minIsSmaller = TrinaryLogic::createNo();
+		} else {
+			$minIsSmaller = $otherType->isSmallerThan((new ConstantIntegerType($this->min)), $phpVersion);
+		}
+
+		if ($this->max === null) {
+			$maxIsSmaller = TrinaryLogic::createYes();
+		} else {
+			$maxIsSmaller = $otherType->isSmallerThan((new ConstantIntegerType($this->max)), $phpVersion);
+		}
+
+		// 0 can have different results in contrast to the interval edges, see https://3v4l.org/iGoti
+		$zeroInt = new ConstantIntegerType(0);
+		if (!$zeroInt->isSuperTypeOf($this)->no()) {
+			return TrinaryLogic::extremeIdentity(
+				$otherType->isSmallerThan($zeroInt, $phpVersion),
+				$minIsSmaller,
+				$maxIsSmaller,
+			);
+		}
+
+		return TrinaryLogic::extremeIdentity($minIsSmaller, $maxIsSmaller);
+	}
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($this->min === null) {
+			$minIsSmaller = TrinaryLogic::createNo();
+		} else {
+			$minIsSmaller = $otherType->isSmallerThanOrEqual((new ConstantIntegerType($this->min)), $phpVersion);
+		}
+
+		if ($this->max === null) {
+			$maxIsSmaller = TrinaryLogic::createYes();
+		} else {
+			$maxIsSmaller = $otherType->isSmallerThanOrEqual((new ConstantIntegerType($this->max)), $phpVersion);
+		}
+
+		// 0 can have different results in contrast to the interval edges, see https://3v4l.org/iGoti
+		$zeroInt = new ConstantIntegerType(0);
+		if (!$zeroInt->isSuperTypeOf($this)->no()) {
+			return TrinaryLogic::extremeIdentity(
+				$otherType->isSmallerThanOrEqual($zeroInt, $phpVersion),
+				$minIsSmaller,
+				$maxIsSmaller,
+			);
+		}
+
+		return TrinaryLogic::extremeIdentity($minIsSmaller, $maxIsSmaller);
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new ConstantBooleanType(true),
+		];
+
+		if ($this->max !== null) {
+			$subtractedTypes[] = self::createAllGreaterThanOrEqualTo($this->max);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [];
+
+		if ($this->max !== null) {
+			$subtractedTypes[] = self::createAllGreaterThan($this->max);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new NullType(),
+			new ConstantBooleanType(false),
+		];
+
+		if ($this->min !== null) {
+			$subtractedTypes[] = self::createAllSmallerThanOrEqualTo($this->min);
+		}
+
+		if ($this->min !== null && $this->min > 0 || $this->max !== null && $this->max < 0) {
+			$subtractedTypes[] = new ConstantBooleanType(true);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [];
+
+		if ($this->min !== null) {
+			$subtractedTypes[] = self::createAllSmallerThan($this->min);
+		}
+
+		if ($this->min !== null && $this->min > 0 || $this->max !== null && $this->max < 0) {
+			$subtractedTypes[] = new NullType();
+			$subtractedTypes[] = new ConstantBooleanType(false);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($this);
+		if ($isZero->no()) {
+			return new ConstantBooleanType(true);
+		}
+
+		if ($isZero->maybe()) {
+			return new BooleanType();
+		}
+
+		return new ConstantBooleanType(false);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		if ($this->min !== null && $this->min >= 0) {
+			return $this;
+		}
+
+		if ($this->max === null || $this->max >= 0) {
+			$inversedMin = $this->min !== null ? $this->min * -1 : null;
+
+			return self::fromInterval(0, $inversedMin !== null && $this->max !== null ? max($inversedMin, $this->max) : null);
+		}
+
+		return self::fromInterval($this->max * -1, $this->min !== null ? $this->min * -1 : null);
+	}
+
+	public function toString(): Type
+	{
+		$finiteTypes = $this->getFiniteTypes();
+		if ($finiteTypes !== []) {
+			return TypeCombinator::union(...$finiteTypes)->toString();
+		}
+
+		$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($this);
+		if ($isZero->no()) {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryLowercaseStringType(),
+				new AccessoryUppercaseStringType(),
+				new AccessoryNumericStringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+
+		return new IntersectionType([
+			new StringType(),
+			new AccessoryLowercaseStringType(),
+			new AccessoryUppercaseStringType(),
+			new AccessoryNumericStringType(),
+		]);
+	}
+
+	/**
+	 * Return the union with another type, but only if it can be expressed in a simpler way than using UnionType
+	 *
+	 */
+	public function tryUnion(Type $otherType): ?Type
+	{
+		if ($otherType instanceof self || $otherType instanceof ConstantIntegerType) {
+			if ($otherType instanceof self) {
+				$otherMin = $otherType->min;
+				$otherMax = $otherType->max;
+			} else {
+				$otherMin = $otherType->getValue();
+				$otherMax = $otherType->getValue();
+			}
+
+			if (self::isDisjoint($this->min, $this->max, $otherMin, $otherMax, false)) {
+				return null;
+			}
+
+			return self::fromInterval(
+				$this->min !== null && $otherMin !== null ? min($this->min, $otherMin) : null,
+				$this->max !== null && $otherMax !== null ? max($this->max, $otherMax) : null,
+			);
+		}
+
+		if (get_class($otherType) === parent::class) {
+			return $otherType;
+		}
+
+		return null;
+	}
+
+	/**
+	 * Return the intersection with another type, but only if it can be expressed in a simpler way than using
+	 * IntersectionType
+	 *
+	 */
+	public function tryIntersect(Type $otherType): ?Type
+	{
+		if ($otherType instanceof self || $otherType instanceof ConstantIntegerType) {
+			if ($otherType instanceof self) {
+				$otherMin = $otherType->min;
+				$otherMax = $otherType->max;
+			} else {
+				$otherMin = $otherType->getValue();
+				$otherMax = $otherType->getValue();
+			}
+
+			if (self::isDisjoint($this->min, $this->max, $otherMin, $otherMax, false)) {
+				return new NeverType();
+			}
+
+			if ($this->min === null) {
+				$newMin = $otherMin;
+			} elseif ($otherMin === null) {
+				$newMin = $this->min;
+			} else {
+				$newMin = max($this->min, $otherMin);
+			}
+
+			if ($this->max === null) {
+				$newMax = $otherMax;
+			} elseif ($otherMax === null) {
+				$newMax = $this->max;
+			} else {
+				$newMax = min($this->max, $otherMax);
+			}
+
+			return self::fromInterval($newMin, $newMax);
+		}
+
+		if (get_class($otherType) === parent::class) {
+			return $this;
+		}
+
+		return null;
+	}
+
+	/**
+	 * Return the different with another type, or null if it cannot be represented.
+	 *
+	 */
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if (get_class($typeToRemove) === parent::class) {
+			return new NeverType();
+		}
+
+		if ($typeToRemove instanceof self || $typeToRemove instanceof ConstantIntegerType) {
+			if ($typeToRemove instanceof self) {
+				$removeMin = $typeToRemove->min;
+				$removeMax = $typeToRemove->max;
+			} else {
+				$removeMin = $typeToRemove->getValue();
+				$removeMax = $typeToRemove->getValue();
+			}
+
+			if (
+				$this->min !== null && $removeMax !== null && $removeMax < $this->min
+				|| $this->max !== null && $removeMin !== null && $this->max < $removeMin
+			) {
+				return $this;
+			}
+
+			if ($removeMin !== null && $removeMin !== PHP_INT_MIN) {
+				$lowerPart = self::fromInterval($this->min, $removeMin - 1);
+			} else {
+				$lowerPart = null;
+			}
+			if ($removeMax !== null && $removeMax !== PHP_INT_MAX) {
+				$upperPart = self::fromInterval($removeMax + 1, $this->max);
+			} else {
+				$upperPart = null;
+			}
+
+			if ($lowerPart !== null && $upperPart !== null) {
+				return TypeCombinator::union($lowerPart, $upperPart);
+			}
+
+			return $lowerPart ?? $upperPart;
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		if ($exponent instanceof UnionType) {
+			$results = [];
+			foreach ($exponent->getTypes() as $unionType) {
+				$results[] = $this->exponentiate($unionType);
+			}
+			return TypeCombinator::union(...$results);
+		}
+
+		if ($exponent instanceof IntegerRangeType) {
+			$min = null;
+			$max = null;
+			if ($this->getMin() !== null && $exponent->getMin() !== null) {
+				$min = $this->getMin() ** $exponent->getMin();
+			}
+			if ($this->getMax() !== null && $exponent->getMax() !== null) {
+				$max = $this->getMax() ** $exponent->getMax();
+			}
+
+			if (($min !== null || $max !== null) && !is_float($min) && !is_float($max)) {
+				return self::fromInterval($min, $max);
+			}
+		}
+
+		if ($exponent instanceof ConstantScalarType) {
+			$exponentValue = $exponent->getValue();
+			if (is_int($exponentValue)) {
+				$min = null;
+				$max = null;
+				if ($this->getMin() !== null) {
+					$min = $this->getMin() ** $exponentValue;
+				}
+				if ($this->getMax() !== null) {
+					$max = $this->getMax() ** $exponentValue;
+				}
+
+				if (!is_float($min) && !is_float($max)) {
+					return self::fromInterval($min, $max);
+				}
+			}
+		}
+
+		return parent::exponentiate($exponent);
+	}
+
+	/**
+	 * @return list<ConstantIntegerType>
+	 */
+	public function getFiniteTypes(): array
+	{
+		if ($this->min === null || $this->max === null) {
+			return [];
+		}
+
+		$size = $this->max - $this->min;
+		if ($size > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return [];
+		}
+
+		$types = [];
+		for ($i = $this->min; $i <= $this->max; $i++) {
+			$types[] = new ConstantIntegerType($i);
+		}
+
+		return $types;
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		if ($this->min === null) {
+			$min = new IdentifierTypeNode('min');
+		} else {
+			$min = new ConstTypeNode(new ConstExprIntegerNode((string) $this->min));
+		}
+
+		if ($this->max === null) {
+			$max = new IdentifierTypeNode('max');
+		} else {
+			$max = new ConstTypeNode(new ConstExprIntegerNode((string) $this->max));
+		}
+
+		return new GenericTypeNode(new IdentifierTypeNode('int'), [$min, $max]);
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		$zeroInt = new ConstantIntegerType(0);
+		if ($zeroInt->isSuperTypeOf($this)->no()) {
+			if ($type->isTrue()->yes()) {
+				return new ConstantBooleanType(true);
+			}
+			if ($type->isFalse()->yes()) {
+				return new ConstantBooleanType(false);
+			}
+		}
+
+		if (
+			$this->isSmallerThan($type, $phpVersion)->yes()
+			|| $this->isGreaterThan($type, $phpVersion)->yes()
+		) {
+			return new ConstantBooleanType(false);
+		}
+
+		return parent::looseCompare($type, $phpVersion);
+	}
+
+}
diff --git a/src/Type/IntegerType.php b/src/Type/IntegerType.php
new file mode 100644
index 00000000..89c74b22
--- /dev/null
+++ b/src/Type/IntegerType.php
@@ -0,0 +1,200 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+
+/** @api */
+class IntegerType implements Type
+{
+
+	use JustNullableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGenericTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'int';
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function toNumber(): Type
+	{
+		return $this;
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return IntegerRangeType::createAllGreaterThanOrEqualTo(0);
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toInteger(): Type
+	{
+		return $this;
+	}
+
+	public function toString(): Type
+	{
+		return new IntersectionType([
+			new StringType(),
+			new AccessoryLowercaseStringType(),
+			new AccessoryUppercaseStringType(),
+			new AccessoryNumericStringType(),
+		]);
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return TypeCombinator::union($this, $this->toFloat());
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isArray()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		if (
+			$phpVersion->nonNumericStringAndIntegerIsFalseOnLooseComparison()
+			&& $type->isString()->yes()
+			&& $type->isNumericString()->no()
+		) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof IntegerRangeType || $typeToRemove instanceof ConstantIntegerType) {
+			if ($typeToRemove instanceof IntegerRangeType) {
+				$removeValueMin = $typeToRemove->getMin();
+				$removeValueMax = $typeToRemove->getMax();
+			} else {
+				$removeValueMin = $typeToRemove->getValue();
+				$removeValueMax = $typeToRemove->getValue();
+			}
+			$lowerPart = $removeValueMin !== null ? IntegerRangeType::fromInterval(null, $removeValueMin, -1) : null;
+			$upperPart = $removeValueMax !== null ? IntegerRangeType::fromInterval($removeValueMax, null, +1) : null;
+			if ($lowerPart !== null && $upperPart !== null) {
+				return new UnionType([$lowerPart, $upperPart]);
+			}
+			return $lowerPart ?? $upperPart ?? new NeverType();
+		}
+
+		return null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return ExponentiateHelper::exponentiate($this, $exponent);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('int');
+	}
+
+}
diff --git a/src/Type/IntersectionType.php b/src/Type/IntersectionType.php
new file mode 100644
index 00000000..a4ffa468
--- /dev/null
+++ b/src/Type/IntersectionType.php
@@ -0,0 +1,1363 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\ArrayShapeNode;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IntersectionTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\Reflection\Type\IntersectionTypeUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\IntersectionTypeUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use function array_intersect_key;
+use function array_map;
+use function array_shift;
+use function array_unique;
+use function array_values;
+use function count;
+use function implode;
+use function in_array;
+use function ksort;
+use function md5;
+use function sprintf;
+use function strcasecmp;
+use function strlen;
+use function substr;
+use function usort;
+
+/** @api */
+class IntersectionType implements CompoundType
+{
+
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private bool $sortedTypes = false;
+
+	/**
+	 * @api
+	 * @param Type[] $types
+	 */
+	public function __construct(private array $types)
+	{
+		if (count($types) < 2) {
+			throw new ShouldNotHappenException(sprintf(
+				'Cannot create %s with: %s',
+				self::class,
+				implode(', ', array_map(static fn (Type $type): string => $type->describe(VerbosityLevel::value()), $types)),
+			));
+		}
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	public function getTypes(): array
+	{
+		return $this->types;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	private function getSortedTypes(): array
+	{
+		if ($this->sortedTypes) {
+			return $this->types;
+		}
+
+		$this->types = UnionTypeHelper::sortTypes($this->types);
+		$this->sortedTypes = true;
+
+		return $this->types;
+	}
+
+	public function inferTemplateTypesOn(Type $templateType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+
+		foreach ($this->types as $type) {
+			$types = $types->intersect($templateType->inferTemplateTypes($type));
+		}
+
+		return $types;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getReferencedClasses() as $className) {
+				$classes[] = $className;
+			}
+		}
+
+		return $classes;
+	}
+
+	public function getObjectClassNames(): array
+	{
+		$objectClassNames = [];
+		foreach ($this->types as $type) {
+			$innerObjectClassNames = $type->getObjectClassNames();
+			foreach ($innerObjectClassNames as $innerObjectClassName) {
+				$objectClassNames[] = $innerObjectClassName;
+			}
+		}
+
+		return array_values(array_unique($objectClassNames));
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		$reflections = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getObjectClassReflections() as $reflection) {
+				$reflections[] = $reflection;
+			}
+		}
+
+		return $reflections;
+	}
+
+	public function getArrays(): array
+	{
+		$arrays = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getArrays() as $array) {
+				$arrays[] = $array;
+			}
+		}
+
+		return $arrays;
+	}
+
+	public function getConstantArrays(): array
+	{
+		$constantArrays = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getConstantArrays() as $constantArray) {
+				$constantArrays[] = $constantArray;
+			}
+		}
+
+		return $constantArrays;
+	}
+
+	public function getConstantStrings(): array
+	{
+		$strings = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getConstantStrings() as $string) {
+				$strings[] = $string;
+			}
+		}
+
+		return $strings;
+	}
+
+	public function accepts(Type $otherType, bool $strictTypes): AcceptsResult
+	{
+		$result = AcceptsResult::createYes();
+		foreach ($this->types as $type) {
+			$result = $result->and($type->accepts($otherType, $strictTypes));
+		}
+
+		if (!$result->yes()) {
+			$isList = $otherType->isList();
+			$reasons = $result->reasons;
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($this, $otherType);
+			if ($this->isList()->yes() && !$isList->yes()) {
+				$reasons[] = sprintf(
+					'%s %s a list.',
+					$otherType->describe($verbosity),
+					$isList->no() ? 'is not' : 'might not be',
+				);
+			}
+
+			$isNonEmpty = $otherType->isIterableAtLeastOnce();
+			if ($this->isIterableAtLeastOnce()->yes() && !$isNonEmpty->yes()) {
+				$reasons[] = sprintf(
+					'%s %s empty.',
+					$otherType->describe($verbosity),
+					$isNonEmpty->no() ? 'is' : 'might be',
+				);
+			}
+
+			if (count($reasons) > 0) {
+				return new AcceptsResult($result->result, $reasons);
+			}
+		}
+
+		return $result;
+	}
+
+	public function isSuperTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof IntersectionType && $this->equals($otherType)) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($otherType instanceof NeverType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return IsSuperTypeOfResult::createYes()->and(...array_map(static fn (Type $innerType) => $innerType->isSuperTypeOf($otherType), $this->types));
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if (($otherType instanceof self || $otherType instanceof UnionType) && !$otherType instanceof TemplateType) {
+			return $otherType->isSuperTypeOf($this);
+		}
+
+		$result = IsSuperTypeOfResult::maxMin(...array_map(static fn (Type $innerType) => $otherType->isSuperTypeOf($innerType), $this->types));
+		if ($this->isOversizedArray()->yes()) {
+			if (!$result->no()) {
+				return IsSuperTypeOfResult::createYes();
+			}
+		}
+
+		return $result;
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		$result = AcceptsResult::maxMin(...array_map(static fn (Type $innerType) => $acceptingType->accepts($innerType, $strictTypes), $this->types));
+		if ($this->isOversizedArray()->yes()) {
+			if (!$result->no()) {
+				return AcceptsResult::createYes();
+			}
+		}
+
+		return $result;
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof static) {
+			return false;
+		}
+
+		if (count($this->types) !== count($type->types)) {
+			return false;
+		}
+
+		$otherTypes = $type->types;
+		foreach ($this->types as $innerType) {
+			$match = false;
+			foreach ($otherTypes as $i => $otherType) {
+				if (!$innerType->equals($otherType)) {
+					continue;
+				}
+
+				$match = true;
+				unset($otherTypes[$i]);
+				break;
+			}
+
+			if (!$match) {
+				return false;
+			}
+		}
+
+		return count($otherTypes) === 0;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			function () use ($level): string {
+				$typeNames = [];
+				$isList = $this->isList()->yes();
+				$valueType = null;
+				foreach ($this->getSortedTypes() as $type) {
+					if ($isList) {
+						if ($type instanceof ArrayType || $type instanceof ConstantArrayType) {
+							$valueType = $type->getIterableValueType();
+							continue;
+						}
+						if ($type instanceof NonEmptyArrayType) {
+							continue;
+						}
+					}
+					if ($type instanceof AccessoryType) {
+						continue;
+					}
+					$typeNames[] = $type->generalize(GeneralizePrecision::lessSpecific())->describe($level);
+				}
+
+				if ($isList) {
+					$isMixedValueType = $valueType instanceof MixedType && $valueType->describe(VerbosityLevel::precise()) === 'mixed' && !$valueType->isExplicitMixed();
+					$innerType = '';
+					if ($valueType !== null && !$isMixedValueType) {
+						$innerType = sprintf('<%s>', $valueType->describe($level));
+					}
+
+					$typeNames[] = 'list' . $innerType;
+				}
+
+				usort($typeNames, static function ($a, $b) {
+					$cmp = strcasecmp($a, $b);
+					if ($cmp !== 0) {
+						return $cmp;
+					}
+
+					return $a <=> $b;
+				});
+
+				return implode('&', $typeNames);
+			},
+			fn (): string => $this->describeItself($level, true),
+			fn (): string => $this->describeItself($level, false),
+		);
+	}
+
+	private function describeItself(VerbosityLevel $level, bool $skipAccessoryTypes): string
+	{
+		$baseTypes = [];
+		$typesToDescribe = [];
+		$skipTypeNames = [];
+
+		$nonEmptyStr = false;
+		$nonFalsyStr = false;
+		$isList = $this->isList()->yes();
+		$isArray = $this->isArray()->yes();
+		$isNonEmptyArray = $this->isIterableAtLeastOnce()->yes();
+		$describedTypes = [];
+		foreach ($this->getSortedTypes() as $i => $type) {
+			if ($type instanceof AccessoryNonEmptyStringType
+				|| $type instanceof AccessoryLiteralStringType
+				|| $type instanceof AccessoryNumericStringType
+				|| $type instanceof AccessoryNonFalsyStringType
+				|| $type instanceof AccessoryLowercaseStringType
+				|| $type instanceof AccessoryUppercaseStringType
+			) {
+				if (
+					($type instanceof AccessoryLowercaseStringType || $type instanceof AccessoryUppercaseStringType)
+					&& !$level->isPrecise()
+				) {
+					continue;
+				}
+				if ($type instanceof AccessoryNonFalsyStringType) {
+					$nonFalsyStr = true;
+				}
+				if ($type instanceof AccessoryNonEmptyStringType) {
+					$nonEmptyStr = true;
+				}
+				if ($nonEmptyStr && $nonFalsyStr) {
+					// prevent redundant 'non-empty-string&non-falsy-string'
+					foreach ($typesToDescribe as $key => $typeToDescribe) {
+						if (!($typeToDescribe instanceof AccessoryNonEmptyStringType)) {
+							continue;
+						}
+
+						unset($typesToDescribe[$key]);
+					}
+				}
+
+				$typesToDescribe[$i] = $type;
+				$skipTypeNames[] = 'string';
+				continue;
+			}
+			if ($isList || $isArray) {
+				if ($type instanceof ArrayType) {
+					$keyType = $type->getKeyType();
+					$valueType = $type->getItemType();
+					if ($isList) {
+						$isMixedValueType = $valueType instanceof MixedType && $valueType->describe(VerbosityLevel::precise()) === 'mixed' && !$valueType->isExplicitMixed();
+						$valueTypeDescription = '';
+						if (!$isMixedValueType) {
+							$valueTypeDescription = sprintf('<%s>', $valueType->describe($level));
+						}
+
+						$describedTypes[$i] = ($isNonEmptyArray ? 'non-empty-list' : 'list') . $valueTypeDescription;
+					} else {
+						$isMixedKeyType = $keyType instanceof MixedType && $keyType->describe(VerbosityLevel::precise()) === 'mixed' && !$keyType->isExplicitMixed();
+						$isMixedValueType = $valueType instanceof MixedType && $valueType->describe(VerbosityLevel::precise()) === 'mixed' && !$valueType->isExplicitMixed();
+						$typeDescription = '';
+						if (!$isMixedKeyType) {
+							$typeDescription = sprintf('<%s, %s>', $keyType->describe($level), $valueType->describe($level));
+						} elseif (!$isMixedValueType) {
+							$typeDescription = sprintf('<%s>', $valueType->describe($level));
+						}
+
+						$describedTypes[$i] = ($isNonEmptyArray ? 'non-empty-array' : 'array') . $typeDescription;
+					}
+					continue;
+				} elseif ($type instanceof ConstantArrayType) {
+					$description = $type->describe($level);
+					$descriptionWithoutKind = substr($description, strlen('array'));
+					$begin = $isList ? 'list' : 'array';
+					if ($isNonEmptyArray && !$type->isIterableAtLeastOnce()->yes()) {
+						$begin = 'non-empty-' . $begin;
+					}
+
+					$describedTypes[$i] = $begin . $descriptionWithoutKind;
+					continue;
+				}
+				if ($type instanceof NonEmptyArrayType || $type instanceof AccessoryArrayListType) {
+					continue;
+				}
+			}
+
+			if ($type instanceof CallableType && $type->isCommonCallable()) {
+				$typesToDescribe[$i] = $type;
+				$skipTypeNames[] = 'object';
+				$skipTypeNames[] = 'string';
+				continue;
+			}
+
+			if (!$type instanceof AccessoryType) {
+				$baseTypes[$i] = $type;
+				continue;
+			}
+
+			if ($skipAccessoryTypes) {
+				continue;
+			}
+
+			$typesToDescribe[$i] = $type;
+		}
+
+		foreach ($baseTypes as $i => $type) {
+			$typeDescription = $type->describe($level);
+
+			if (in_array($typeDescription, ['object', 'string'], true) && in_array($typeDescription, $skipTypeNames, true)) {
+				foreach ($typesToDescribe as $j => $typeToDescribe) {
+					if ($typeToDescribe instanceof CallableType && $typeToDescribe->isCommonCallable()) {
+						$describedTypes[$i] = 'callable-' . $typeDescription;
+						unset($typesToDescribe[$j]);
+						continue 2;
+					}
+				}
+			}
+
+			if (in_array($typeDescription, $skipTypeNames, true)) {
+				continue;
+			}
+
+			$describedTypes[$i] = $type->describe($level);
+		}
+
+		foreach ($typesToDescribe as $i => $typeToDescribe) {
+			$describedTypes[$i] = $typeToDescribe->describe($level);
+		}
+
+		ksort($describedTypes);
+
+		return implode('&', $describedTypes);
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getTemplateType($ancestorClassName, $templateTypeName));
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isObject());
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isEnum());
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->canAccessProperties());
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->hasProperty($propertyName));
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$propertyPrototypes = [];
+		foreach ($this->types as $type) {
+			if (!$type->hasProperty($propertyName)->yes()) {
+				continue;
+			}
+
+			$propertyPrototypes[] = $type->getUnresolvedPropertyPrototype($propertyName, $scope)->withFechedOnType($this);
+		}
+
+		$propertiesCount = count($propertyPrototypes);
+		if ($propertiesCount === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($propertiesCount === 1) {
+			return $propertyPrototypes[0];
+		}
+
+		return new IntersectionTypeUnresolvedPropertyPrototypeReflection($propertyName, $propertyPrototypes);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->canCallMethods());
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->hasMethod($methodName));
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$methodPrototypes = [];
+		foreach ($this->types as $type) {
+			if (!$type->hasMethod($methodName)->yes()) {
+				continue;
+			}
+
+			$methodPrototypes[] = $type->getUnresolvedMethodPrototype($methodName, $scope)->withCalledOnType($this);
+		}
+
+		$methodsCount = count($methodPrototypes);
+		if ($methodsCount === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($methodsCount === 1) {
+			return $methodPrototypes[0];
+		}
+
+		return new IntersectionTypeUnresolvedMethodPrototypeReflection($methodName, $methodPrototypes);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->canAccessConstants());
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->hasConstant($constantName));
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		foreach ($this->types as $type) {
+			if ($type->hasConstant($constantName)->yes()) {
+				return $type->getConstant($constantName);
+			}
+		}
+
+		throw new ShouldNotHappenException();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isIterable());
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isIterableAtLeastOnce());
+	}
+
+	public function getArraySize(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getArraySize());
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getIterableKeyType());
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getFirstIterableKeyType());
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getLastIterableKeyType());
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getIterableValueType());
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getFirstIterableValueType());
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getLastIterableValueType());
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isArray());
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isConstantArray());
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isOversizedArray());
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isList());
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isString());
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isNumericString());
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isNonEmptyString());
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isNonFalsyString());
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isLiteralString());
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isLowercaseString());
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isUppercaseString());
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isClassString());
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getClassStringObjectType());
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getObjectTypeOrClassStringObjectType());
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isVoid());
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isScalar());
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return $this->intersectResults(
+			static fn (Type $innerType): TrinaryLogic => $innerType->looseCompare($type, $phpVersion)->toTrinaryLogic()
+		)->toBooleanType();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isOffsetAccessible());
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isOffsetAccessLegal());
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($this->isList()->yes() && $this->isIterableAtLeastOnce()->yes()) {
+			$arrayKeyOffsetType = $offsetType->toArrayKey();
+			if ((new ConstantIntegerType(0))->isSuperTypeOf($arrayKeyOffsetType)->yes()) {
+				return TrinaryLogic::createYes();
+			}
+		}
+
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->hasOffsetValueType($offsetType));
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		$result = $this->intersectTypes(static fn (Type $type): Type => $type->getOffsetValueType($offsetType));
+		if ($this->isOversizedArray()->yes()) {
+			return TypeUtils::toBenevolentUnion($result);
+		}
+
+		return $result;
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($this->isOversizedArray()->yes()) {
+			return $this->intersectTypes(static function (Type $type) use ($offsetType, $valueType, $unionValues): Type {
+				// avoid new HasOffsetValueType being intersected with oversized array
+				if (!$type instanceof ArrayType) {
+					return $type->setOffsetValueType($offsetType, $valueType, $unionValues);
+				}
+
+				if (!$offsetType instanceof ConstantStringType && !$offsetType instanceof ConstantIntegerType) {
+					return $type->setOffsetValueType($offsetType, $valueType, $unionValues);
+				}
+
+				if (!$offsetType->isSuperTypeOf($type->getKeyType())->yes()) {
+					return $type->setOffsetValueType($offsetType, $valueType, $unionValues);
+				}
+
+				return TypeCombinator::intersect(
+					new ArrayType(
+						TypeCombinator::union($type->getKeyType(), $offsetType),
+						TypeCombinator::union($type->getItemType(), $valueType),
+					),
+					new NonEmptyArrayType(),
+				);
+			});
+		}
+
+		$result = $this->intersectTypes(static fn (Type $type): Type => $type->setOffsetValueType($offsetType, $valueType, $unionValues));
+
+		if ($offsetType !== null && $this->isList()->yes() && $this->isIterableAtLeastOnce()->yes() && (new ConstantIntegerType(1))->isSuperTypeOf($offsetType)->yes()) {
+			$result = TypeCombinator::intersect($result, new AccessoryArrayListType());
+		}
+
+		return $result;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->setExistingOffsetValueType($offsetType, $valueType));
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->unsetOffset($offsetType));
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getKeysArray());
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getValuesArray());
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->chunkArray($lengthType, $preserveKeys));
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->fillKeysArray($valueType));
+	}
+
+	public function flipArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->flipArray());
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->intersectKeyArray($otherArraysType));
+	}
+
+	public function popArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->popArray());
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->reverseArray($preserveKeys));
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->searchArray($needleType));
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->shiftArray());
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->shuffleArray());
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->sliceArray($offsetType, $lengthType, $preserveKeys));
+	}
+
+	public function getEnumCases(): array
+	{
+		$compare = [];
+		foreach ($this->types as $type) {
+			$oneType = [];
+			foreach ($type->getEnumCases() as $enumCase) {
+				$oneType[$enumCase->getClassName() . '::' . $enumCase->getEnumCaseName()] = $enumCase;
+			}
+			$compare[] = $oneType;
+		}
+
+		return array_values(array_intersect_key(...$compare));
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isCallable());
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		if ($this->isCallable()->no()) {
+			throw new ShouldNotHappenException();
+		}
+
+		return [new TrivialParametersAcceptor()];
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isCloneable());
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isSmallerThan($otherType, $phpVersion));
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isSmallerThanOrEqual($otherType, $phpVersion));
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isNull());
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isConstantValue());
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isConstantScalarValue());
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		$scalarTypes = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getConstantScalarTypes() as $scalarType) {
+				$scalarTypes[] = $scalarType;
+			}
+		}
+
+		return $scalarTypes;
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		$values = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getConstantScalarValues() as $value) {
+				$values[] = $value;
+			}
+		}
+
+		return $values;
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isTrue());
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isFalse());
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isBoolean());
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isFloat());
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $type->isInteger());
+	}
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $otherType->isSmallerThan($type, $phpVersion));
+	}
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->intersectResults(static fn (Type $type): TrinaryLogic => $otherType->isSmallerThanOrEqual($type, $phpVersion));
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getSmallerType($phpVersion));
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getSmallerOrEqualType($phpVersion));
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getGreaterType($phpVersion));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->getGreaterOrEqualType($phpVersion));
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		$type = $this->intersectTypes(static fn (Type $type): BooleanType => $type->toBoolean());
+
+		if (!$type instanceof BooleanType) {
+			return new BooleanType();
+		}
+
+		return $type;
+	}
+
+	public function toNumber(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toNumber());
+
+		return $type;
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toAbsoluteNumber());
+
+		return $type;
+	}
+
+	public function toString(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toString());
+
+		return $type;
+	}
+
+	public function toInteger(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toInteger());
+
+		return $type;
+	}
+
+	public function toFloat(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toFloat());
+
+		return $type;
+	}
+
+	public function toArray(): Type
+	{
+		$type = $this->intersectTypes(static fn (Type $type): Type => $type->toArray());
+
+		return $type;
+	}
+
+	public function toArrayKey(): Type
+	{
+		if ($this->isNumericString()->yes()) {
+			return new IntegerType();
+		}
+
+		if ($this->isString()->yes()) {
+			return $this;
+		}
+
+		return $this->intersectTypes(static fn (Type $type): Type => $type->toArrayKey());
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->toCoercedArgumentType($strictTypes));
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+
+		foreach ($this->types as $type) {
+			$types = $types->intersect($type->inferTemplateTypes($receivedType));
+		}
+
+		return $types;
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$references = [];
+
+		foreach ($this->types as $type) {
+			foreach ($type->getReferencedTemplateTypes($positionVariance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		foreach ($this->types as $type) {
+			$newType = $cb($type);
+			if ($type !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeCombinator::intersect(...$types);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		if (count($this->getTypes()) !== count($right->getTypes())) {
+			return $this;
+		}
+
+		foreach ($this->getSortedTypes() as $i => $leftType) {
+			$rightType = $right->getSortedTypes()[$i];
+			$newType = $cb($leftType, $rightType);
+			if ($leftType !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeCombinator::intersect(...$types);
+		}
+
+		return $this;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => TypeCombinator::remove($type, $typeToRemove));
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return $this->intersectTypes(static fn (Type $type): Type => $type->exponentiate($exponent));
+	}
+
+	public function getFiniteTypes(): array
+	{
+		$compare = [];
+		foreach ($this->types as $type) {
+			$oneType = [];
+			foreach ($type->getFiniteTypes() as $finiteType) {
+				$oneType[md5($finiteType->describe(VerbosityLevel::typeOnly()))] = $finiteType;
+			}
+			$compare[] = $oneType;
+		}
+
+		$result = array_values(array_intersect_key(...$compare));
+
+		if (count($result) > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return [];
+		}
+
+		return $result;
+	}
+
+	/**
+	 * @param callable(Type $type): TrinaryLogic $getResult
+	 */
+	private function intersectResults(callable $getResult): TrinaryLogic
+	{
+		return TrinaryLogic::lazyMaxMin($this->types, $getResult);
+	}
+
+	/**
+	 * @param callable(Type $type): Type $getType
+	 */
+	private function intersectTypes(callable $getType): Type
+	{
+		$operands = array_map($getType, $this->types);
+		return TypeCombinator::intersect(...$operands);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		$baseTypes = [];
+		$typesToDescribe = [];
+		$skipTypeNames = [];
+
+		$nonEmptyStr = false;
+		$nonFalsyStr = false;
+		$isList = $this->isList()->yes();
+		$isArray = $this->isArray()->yes();
+		$isNonEmptyArray = $this->isIterableAtLeastOnce()->yes();
+		$describedTypes = [];
+
+		foreach ($this->getSortedTypes() as $i => $type) {
+			if ($type instanceof AccessoryNonEmptyStringType
+				|| $type instanceof AccessoryLiteralStringType
+				|| $type instanceof AccessoryNumericStringType
+				|| $type instanceof AccessoryNonFalsyStringType
+				|| $type instanceof AccessoryLowercaseStringType
+				|| $type instanceof AccessoryUppercaseStringType
+			) {
+				if ($type instanceof AccessoryNonFalsyStringType) {
+					$nonFalsyStr = true;
+				}
+				if ($type instanceof AccessoryNonEmptyStringType) {
+					$nonEmptyStr = true;
+				}
+				if ($nonEmptyStr && $nonFalsyStr) {
+					// prevent redundant 'non-empty-string&non-falsy-string'
+					foreach ($typesToDescribe as $key => $typeToDescribe) {
+						if (!($typeToDescribe instanceof AccessoryNonEmptyStringType)) {
+							continue;
+						}
+
+						unset($typesToDescribe[$key]);
+					}
+				}
+
+				$typesToDescribe[$i] = $type;
+				$skipTypeNames[] = 'string';
+				continue;
+			}
+
+			if ($isList || $isArray) {
+				if ($type instanceof ArrayType) {
+					$keyType = $type->getKeyType();
+					$valueType = $type->getItemType();
+					if ($isList) {
+						$isMixedValueType = $valueType instanceof MixedType && $valueType->describe(VerbosityLevel::precise()) === 'mixed' && !$valueType->isExplicitMixed();
+						$identifierTypeNode = new IdentifierTypeNode($isNonEmptyArray ? 'non-empty-list' : 'list');
+						if (!$isMixedValueType) {
+							$describedTypes[$i] = new GenericTypeNode($identifierTypeNode, [
+								$valueType->toPhpDocNode(),
+							]);
+						} else {
+							$describedTypes[$i] = $identifierTypeNode;
+						}
+					} else {
+						$isMixedKeyType = $keyType instanceof MixedType && $keyType->describe(VerbosityLevel::precise()) === 'mixed' && !$keyType->isExplicitMixed();
+						$isMixedValueType = $valueType instanceof MixedType && $valueType->describe(VerbosityLevel::precise()) === 'mixed' && !$valueType->isExplicitMixed();
+						$identifierTypeNode = new IdentifierTypeNode($isNonEmptyArray ? 'non-empty-array' : 'array');
+						if (!$isMixedKeyType) {
+							$describedTypes[$i] = new GenericTypeNode($identifierTypeNode, [
+								$keyType->toPhpDocNode(),
+								$valueType->toPhpDocNode(),
+							]);
+						} elseif (!$isMixedValueType) {
+							$describedTypes[$i] = new GenericTypeNode($identifierTypeNode, [
+								$valueType->toPhpDocNode(),
+							]);
+						} else {
+							$describedTypes[$i] = $identifierTypeNode;
+						}
+					}
+					continue;
+				} elseif ($type instanceof ConstantArrayType) {
+					$constantArrayTypeNode = $type->toPhpDocNode();
+					if ($constantArrayTypeNode instanceof ArrayShapeNode) {
+						$newKind = $constantArrayTypeNode->kind;
+						if ($isList) {
+							if ($isNonEmptyArray && !$type->isIterableAtLeastOnce()->yes()) {
+								$newKind = ArrayShapeNode::KIND_NON_EMPTY_LIST;
+							} else {
+								$newKind = ArrayShapeNode::KIND_LIST;
+							}
+						} elseif ($isNonEmptyArray && !$type->isIterableAtLeastOnce()->yes()) {
+							$newKind = ArrayShapeNode::KIND_NON_EMPTY_ARRAY;
+						}
+
+						if ($newKind !== $constantArrayTypeNode->kind) {
+							if ($constantArrayTypeNode->sealed) {
+								$constantArrayTypeNode = ArrayShapeNode::createSealed($constantArrayTypeNode->items, $newKind);
+							} else {
+								$constantArrayTypeNode = ArrayShapeNode::createUnsealed($constantArrayTypeNode->items, $constantArrayTypeNode->unsealedType, $newKind);
+							}
+						}
+
+						$describedTypes[$i] = $constantArrayTypeNode;
+						continue;
+					}
+				}
+				if ($type instanceof NonEmptyArrayType || $type instanceof AccessoryArrayListType) {
+					continue;
+				}
+			}
+
+			if (!$type instanceof AccessoryType) {
+				$baseTypes[$i] = $type;
+				continue;
+			}
+
+			$accessoryPhpDocNode = $type->toPhpDocNode();
+			if ($accessoryPhpDocNode instanceof IdentifierTypeNode && $accessoryPhpDocNode->name === '') {
+				continue;
+			}
+
+			$typesToDescribe[$i] = $type;
+		}
+
+		foreach ($baseTypes as $i => $type) {
+			$typeNode = $type->toPhpDocNode();
+			if ($typeNode instanceof GenericTypeNode && $typeNode->type->name === 'array') {
+				$nonEmpty = false;
+				$typeName = 'array';
+				foreach ($typesToDescribe as $j => $typeToDescribe) {
+					if ($typeToDescribe instanceof AccessoryArrayListType) {
+						$typeName = 'list';
+						if (count($typeNode->genericTypes) > 1) {
+							array_shift($typeNode->genericTypes);
+						}
+					} elseif ($typeToDescribe instanceof NonEmptyArrayType) {
+						$nonEmpty = true;
+					} else {
+						continue;
+					}
+
+					unset($typesToDescribe[$j]);
+				}
+
+				if ($nonEmpty) {
+					$typeName = 'non-empty-' . $typeName;
+				}
+
+				$describedTypes[$i] = new GenericTypeNode(
+					new IdentifierTypeNode($typeName),
+					$typeNode->genericTypes,
+				);
+				continue;
+			}
+
+			if ($typeNode instanceof IdentifierTypeNode && in_array($typeNode->name, $skipTypeNames, true)) {
+				continue;
+			}
+
+			$describedTypes[$i] = $typeNode;
+		}
+
+		foreach ($typesToDescribe as $i => $typeToDescribe) {
+			$describedTypes[$i] = $typeToDescribe->toPhpDocNode();
+		}
+
+		ksort($describedTypes);
+
+		$describedTypes = array_values($describedTypes);
+
+		if (count($describedTypes) === 1) {
+			return $describedTypes[0];
+		}
+
+		return new IntersectionTypeNode($describedTypes);
+	}
+
+}
diff --git a/src/Type/IsSuperTypeOfResult.php b/src/Type/IsSuperTypeOfResult.php
new file mode 100644
index 00000000..9c1465f6
--- /dev/null
+++ b/src/Type/IsSuperTypeOfResult.php
@@ -0,0 +1,165 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use function array_map;
+use function array_merge;
+use function array_unique;
+use function array_values;
+
+/**
+ * @api
+ */
+final class IsSuperTypeOfResult
+{
+
+	/**
+	 * @api
+	 * @param list<string> $reasons
+	 */
+	public function __construct(
+		public readonly TrinaryLogic $result,
+		public readonly array $reasons,
+	)
+	{
+	}
+
+	public function yes(): bool
+	{
+		return $this->result->yes();
+	}
+
+	public function maybe(): bool
+	{
+		return $this->result->maybe();
+	}
+
+	public function no(): bool
+	{
+		return $this->result->no();
+	}
+
+	public static function createYes(): self
+	{
+		return new self(TrinaryLogic::createYes(), []);
+	}
+
+	/**
+	 * @param list<string> $reasons
+	 */
+	public static function createNo(array $reasons = []): self
+	{
+		return new self(TrinaryLogic::createNo(), $reasons);
+	}
+
+	public static function createMaybe(): self
+	{
+		return new self(TrinaryLogic::createMaybe(), []);
+	}
+
+	public static function createFromBoolean(bool $value): self
+	{
+		return new self(TrinaryLogic::createFromBoolean($value), []);
+	}
+
+	public function toAcceptsResult(): AcceptsResult
+	{
+		return new AcceptsResult($this->result, $this->reasons);
+	}
+
+	public function and(self ...$others): self
+	{
+		$results = [];
+		$reasons = [];
+		foreach ($others as $other) {
+			$results[] = $other->result;
+			$reasons[] = $other->reasons;
+		}
+
+		return new self(
+			$this->result->and(...$results),
+			array_values(array_unique(array_merge($this->reasons, ...$reasons))),
+		);
+	}
+
+	public function or(self ...$others): self
+	{
+		$results = [];
+		$reasons = [];
+		foreach ($others as $other) {
+			$results[] = $other->result;
+			$reasons[] = $other->reasons;
+		}
+
+		return new self(
+			$this->result->or(...$results),
+			array_values(array_unique(array_merge($this->reasons, ...$reasons))),
+		);
+	}
+
+	/**
+	 * @param callable(string): string $cb
+	 */
+	public function decorateReasons(callable $cb): self
+	{
+		$reasons = [];
+		foreach ($this->reasons as $reason) {
+			$reasons[] = $cb($reason);
+		}
+
+		return new self($this->result, $reasons);
+	}
+
+	public static function extremeIdentity(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$result = TrinaryLogic::extremeIdentity(...array_map(static fn (self $result) => $result->result, $operands));
+
+		return new self($result, self::mergeReasons($operands));
+	}
+
+	public static function maxMin(self ...$operands): self
+	{
+		if ($operands === []) {
+			throw new ShouldNotHappenException();
+		}
+
+		$result = TrinaryLogic::maxMin(...array_map(static fn (self $result) => $result->result, $operands));
+
+		return new self($result, self::mergeReasons($operands));
+	}
+
+	public function negate(): self
+	{
+		return new self($this->result->negate(), $this->reasons);
+	}
+
+	public function describe(): string
+	{
+		return $this->result->describe();
+	}
+
+	/**
+	 * @param array<self> $operands
+	 *
+	 * @return list<string>
+	 */
+	private static function mergeReasons(array $operands): array
+	{
+		$reasons = [];
+		foreach ($operands as $operand) {
+			foreach ($operand->reasons as $reason) {
+				$reasons[] = $reason;
+			}
+		}
+
+		return array_values(array_unique($reasons));
+	}
+
+}
diff --git a/src/Type/IterableType.php b/src/Type/IterableType.php
new file mode 100644
index 00000000..cf7dca78
--- /dev/null
+++ b/src/Type/IterableType.php
@@ -0,0 +1,518 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\MaybeArrayTypeTrait;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\MaybeObjectTypeTrait;
+use PHPStan\Type\Traits\MaybeOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use Traversable;
+use function array_merge;
+use function sprintf;
+
+/** @api */
+class IterableType implements CompoundType
+{
+
+	use MaybeArrayTypeTrait;
+	use MaybeCallableTypeTrait;
+	use MaybeObjectTypeTrait;
+	use MaybeOffsetAccessibleTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct(
+		private Type $keyType,
+		private Type $itemType,
+	)
+	{
+	}
+
+	public function getKeyType(): Type
+	{
+		return $this->keyType;
+	}
+
+	public function getItemType(): Type
+	{
+		return $this->itemType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return array_merge(
+			$this->keyType->getReferencedClasses(),
+			$this->getItemType()->getReferencedClasses(),
+		);
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type->isConstantArray()->yes() && $type->isIterableAtLeastOnce()->no()) {
+			return AcceptsResult::createYes();
+		}
+		if ($type->isIterable()->yes()) {
+			return $this->getIterableValueType()->accepts($type->getIterableValueType(), $strictTypes)
+				->and($this->getIterableKeyType()->accepts($type->getIterableKeyType(), $strictTypes));
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return (new IsSuperTypeOfResult($type->isIterable(), []))
+			->and($this->getIterableValueType()->isSuperTypeOf($type->getIterableValueType()))
+			->and($this->getIterableKeyType()->isSuperTypeOf($type->getIterableKeyType()));
+	}
+
+	public function isSuperTypeOfMixed(Type $type): IsSuperTypeOfResult
+	{
+		return (new IsSuperTypeOfResult($type->isIterable(), []))
+			->and($this->isNestedTypeSuperTypeOf($this->getIterableValueType(), $type->getIterableValueType()))
+			->and($this->isNestedTypeSuperTypeOf($this->getIterableKeyType(), $type->getIterableKeyType()));
+	}
+
+	private function isNestedTypeSuperTypeOf(Type $a, Type $b): IsSuperTypeOfResult
+	{
+		if (!$a instanceof MixedType || !$b instanceof MixedType) {
+			return $a->isSuperTypeOf($b);
+		}
+
+		if ($a instanceof TemplateMixedType || $b instanceof TemplateMixedType) {
+			return $a->isSuperTypeOf($b);
+		}
+
+		if ($a->isExplicitMixed()) {
+			if ($b->isExplicitMixed()) {
+				return IsSuperTypeOfResult::createYes();
+			}
+
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		return IsSuperTypeOfResult::createYes();
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof IntersectionType || $otherType instanceof UnionType) {
+			return $otherType->isSuperTypeOf(new UnionType([
+				new ArrayType($this->keyType, $this->itemType),
+				new IntersectionType([
+					new ObjectType(Traversable::class),
+					$this,
+				]),
+			]));
+		}
+
+		if ($otherType instanceof self) {
+			$limit = IsSuperTypeOfResult::createYes();
+		} else {
+			$limit = IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($otherType->isConstantArray()->yes() && $otherType->isIterableAtLeastOnce()->no()) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		return $limit->and(
+			new IsSuperTypeOfResult($otherType->isIterable(), []),
+			$otherType->getIterableValueType()->isSuperTypeOf($this->itemType),
+			$otherType->getIterableKeyType()->isSuperTypeOf($this->keyType),
+		);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		return $this->keyType->equals($type->keyType)
+			&& $this->itemType->equals($type->itemType);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$isMixedKeyType = $this->keyType instanceof MixedType && $this->keyType->describe(VerbosityLevel::precise()) === 'mixed';
+		$isMixedItemType = $this->itemType instanceof MixedType && $this->itemType->describe(VerbosityLevel::precise()) === 'mixed';
+		if ($isMixedKeyType) {
+			if ($isMixedItemType) {
+				return 'iterable';
+			}
+
+			return sprintf('iterable<%s>', $this->itemType->describe($level));
+		}
+
+		return sprintf('iterable<%s, %s>', $this->keyType->describe($level), $this->itemType->describe($level));
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($this->getIterableKeyType()->isSuperTypeOf($offsetType)->no()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ArrayType($this->keyType, $this->getItemType());
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return TypeCombinator::union($this, new ArrayType(new MixedType(true), new MixedType(true)), new ObjectType(Traversable::class));
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this->keyType;
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->keyType;
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->keyType;
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->getItemType();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if (!$receivedType->isIterable()->yes()) {
+			return TemplateTypeMap::createEmpty();
+		}
+
+		$keyTypeMap = $this->getIterableKeyType()->inferTemplateTypes($receivedType->getIterableKeyType());
+		$valueTypeMap = $this->getIterableValueType()->inferTemplateTypes($receivedType->getIterableValueType());
+
+		return $keyTypeMap->union($valueTypeMap);
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$variance = $positionVariance->compose(TemplateTypeVariance::createCovariant());
+
+		return array_merge(
+			$this->getIterableKeyType()->getReferencedTemplateTypes($variance),
+			$this->getIterableValueType()->getReferencedTemplateTypes($variance),
+		);
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$keyType = $cb($this->keyType);
+		$itemType = $cb($this->itemType);
+
+		if ($keyType !== $this->keyType || $itemType !== $this->itemType) {
+			return new self($keyType, $itemType);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$keyType = $cb($this->keyType, $right->getIterableKeyType());
+		$itemType = $cb($this->itemType, $right->getIterableValueType());
+
+		if ($keyType !== $this->keyType || $itemType !== $this->itemType) {
+			return new self($keyType, $itemType);
+		}
+
+		return $this;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		$arrayType = new ArrayType(new MixedType(), new MixedType());
+		if ($typeToRemove->isSuperTypeOf($arrayType)->yes()) {
+			return new GenericObjectType(Traversable::class, [
+				$this->getIterableKeyType(),
+				$this->getIterableValueType(),
+			]);
+		}
+
+		$traversableType = new ObjectType(Traversable::class);
+		if ($typeToRemove->isSuperTypeOf($traversableType)->yes()) {
+			return new ArrayType($this->getIterableKeyType(), $this->getIterableValueType());
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		$isMixedKeyType = $this->keyType instanceof MixedType && $this->keyType->describe(VerbosityLevel::precise()) === 'mixed';
+		$isMixedItemType = $this->itemType instanceof MixedType && $this->itemType->describe(VerbosityLevel::precise()) === 'mixed';
+
+		if ($isMixedKeyType) {
+			if ($isMixedItemType) {
+				return new IdentifierTypeNode('iterable');
+			}
+
+			return new GenericTypeNode(
+				new IdentifierTypeNode('iterable'),
+				[
+					$this->itemType->toPhpDocNode(),
+				],
+			);
+		}
+
+		return new GenericTypeNode(
+			new IdentifierTypeNode('iterable'),
+			[
+				$this->keyType->toPhpDocNode(),
+				$this->itemType->toPhpDocNode(),
+			],
+		);
+	}
+
+}
diff --git a/src/Type/JustNullableTypeTrait.php b/src/Type/JustNullableTypeTrait.php
new file mode 100644
index 00000000..a3be21fe
--- /dev/null
+++ b/src/Type/JustNullableTypeTrait.php
@@ -0,0 +1,173 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\TrinaryLogic;
+use function get_class;
+
+trait JustNullableTypeTrait
+{
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof static) {
+			return AcceptsResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return get_class($type) === static::class;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+}
diff --git a/src/Type/KeyOfType.php b/src/Type/KeyOfType.php
new file mode 100644
index 00000000..aa47c435
--- /dev/null
+++ b/src/Type/KeyOfType.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function sprintf;
+
+/** @api */
+class KeyOfType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->type->getReferencedClasses();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return $this->type->getReferencedTemplateTypes($positionVariance);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->type->equals($type->type);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('key-of<%s>', $this->type->describe($level));
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->type);
+	}
+
+	protected function getResult(): Type
+	{
+		return $this->type->getIterableKeyType();
+	}
+
+	/**
+	 * @param callable(Type): Type $cb
+	 */
+	public function traverse(callable $cb): Type
+	{
+		$type = $cb($this->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$type = $cb($this->type, $right->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new GenericTypeNode(new IdentifierTypeNode('key-of'), [$this->type->toPhpDocNode()]);
+	}
+
+}
diff --git a/src/Type/LateResolvableType.php b/src/Type/LateResolvableType.php
new file mode 100644
index 00000000..fae4dc25
--- /dev/null
+++ b/src/Type/LateResolvableType.php
@@ -0,0 +1,14 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/** @api */
+interface LateResolvableType
+{
+
+	public function resolve(): Type;
+
+	public function isResolvable(): bool;
+
+}
diff --git a/src/Type/LazyTypeAliasResolverProvider.php b/src/Type/LazyTypeAliasResolverProvider.php
new file mode 100644
index 00000000..f4890587
--- /dev/null
+++ b/src/Type/LazyTypeAliasResolverProvider.php
@@ -0,0 +1,20 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\DependencyInjection\Container;
+
+final class LazyTypeAliasResolverProvider implements TypeAliasResolverProvider
+{
+
+	public function __construct(private Container $container)
+	{
+	}
+
+	public function getTypeAliasResolver(): TypeAliasResolver
+	{
+		return $this->container->getByType(TypeAliasResolver::class);
+	}
+
+}
diff --git a/src/Type/LooseComparisonHelper.php b/src/Type/LooseComparisonHelper.php
new file mode 100644
index 00000000..a795f518
--- /dev/null
+++ b/src/Type/LooseComparisonHelper.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\Type\Constant\ConstantBooleanType;
+
+final class LooseComparisonHelper
+{
+
+	public static function compareConstantScalars(ConstantScalarType $leftType, ConstantScalarType $rightType, PhpVersion $phpVersion): BooleanType
+	{
+		if ($phpVersion->castsNumbersToStringsOnLooseComparison()) {
+			$isNumber = new UnionType([
+				new IntegerType(),
+				new FloatType(),
+			]);
+
+			if ($leftType->isString()->yes() && $leftType->isNumericString()->no() && $isNumber->isSuperTypeOf($rightType)->yes()) {
+				$stringValue = (string) $rightType->getValue();
+				return new ConstantBooleanType($stringValue === $leftType->getValue());
+			}
+			if ($rightType->isString()->yes() && $rightType->isNumericString()->no() && $isNumber->isSuperTypeOf($leftType)->yes()) {
+				$stringValue = (string) $leftType->getValue();
+				return new ConstantBooleanType($stringValue === $rightType->getValue());
+			}
+		} else {
+			if ($leftType->isString()->yes() && $leftType->isNumericString()->no() && $rightType->isFloat()->yes()) {
+				$numericPart = (float) $leftType->getValue();
+				return new ConstantBooleanType($numericPart === $rightType->getValue());
+			}
+			if ($rightType->isString()->yes() && $rightType->isNumericString()->no() && $leftType->isFloat()->yes()) {
+				$numericPart = (float) $rightType->getValue();
+				return new ConstantBooleanType($numericPart === $leftType->getValue());
+			}
+			if ($leftType->isString()->yes() && $leftType->isNumericString()->no() && $rightType->isInteger()->yes()) {
+				$numericPart = (int) $leftType->getValue();
+				return new ConstantBooleanType($numericPart === $rightType->getValue());
+			}
+			if ($rightType->isString()->yes() && $rightType->isNumericString()->no() && $leftType->isInteger()->yes()) {
+				$numericPart = (int) $rightType->getValue();
+				return new ConstantBooleanType($numericPart === $leftType->getValue());
+			}
+		}
+
+		// @phpstan-ignore equal.notAllowed
+		return new ConstantBooleanType($leftType->getValue() == $rightType->getValue()); // phpcs:ignore
+	}
+
+}
diff --git a/src/Type/MethodParameterClosureTypeExtension.php b/src/Type/MethodParameterClosureTypeExtension.php
new file mode 100644
index 00000000..2cc56b05
--- /dev/null
+++ b/src/Type/MethodParameterClosureTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface for parameter closure type extensions for methods.
+ *
+ * To register it in the configuration file use the `phpstan.methodParameterClosureTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.methodParameterClosureTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface MethodParameterClosureTypeExtension
+{
+
+	public function isMethodSupported(MethodReflection $methodReflection, ParameterReflection $parameter): bool;
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/MethodParameterOutTypeExtension.php b/src/Type/MethodParameterOutTypeExtension.php
new file mode 100644
index 00000000..2813aada
--- /dev/null
+++ b/src/Type/MethodParameterOutTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface dynamic parameter out type extensions implement for non-static methods.
+ *
+ * To register it in the configuration file use the `phpstan.methodParameterOutTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.methodParameterOutTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface MethodParameterOutTypeExtension
+{
+
+	public function isMethodSupported(MethodReflection $methodReflection, ParameterReflection $parameter): bool;
+
+	public function getParameterOutTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/MethodTypeSpecifyingExtension.php b/src/Type/MethodTypeSpecifyingExtension.php
new file mode 100644
index 00000000..bdf71bd9
--- /dev/null
+++ b/src/Type/MethodTypeSpecifyingExtension.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface type-specifying extensions implement for non-static methods.
+ *
+ * To register it in the configuration file use the `phpstan.typeSpecifier.methodTypeSpecifyingExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.typeSpecifier.methodTypeSpecifyingExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/type-specifying-extensions
+ *
+ * @api
+ */
+interface MethodTypeSpecifyingExtension
+{
+
+	/** @return class-string */
+	public function getClass(): string;
+
+	public function isMethodSupported(MethodReflection $methodReflection, MethodCall $node, TypeSpecifierContext $context): bool;
+
+	public function specifyTypes(MethodReflection $methodReflection, MethodCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes;
+
+}
diff --git a/src/Type/MixedType.php b/src/Type/MixedType.php
new file mode 100644
index 00000000..645605e1
--- /dev/null
+++ b/src/Type/MixedType.php
@@ -0,0 +1,1056 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use ArrayAccess;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\Dummy\DummyClassConstantReflection;
+use PHPStan\Reflection\Dummy\DummyMethodReflection;
+use PHPStan\Reflection\Dummy\DummyPropertyReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+use function sprintf;
+
+/** @api */
+class MixedType implements CompoundType, SubtractableType
+{
+
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private ?Type $subtractedType;
+
+	/** @api */
+	public function __construct(
+		private bool $isExplicitMixed = false,
+		?Type $subtractedType = null,
+	)
+	{
+		if ($subtractedType instanceof NeverType) {
+			$subtractedType = null;
+		}
+
+		$this->subtractedType = $subtractedType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return AcceptsResult::createYes();
+	}
+
+	public function isSuperTypeOfMixed(MixedType $type): IsSuperTypeOfResult
+	{
+		if ($this->subtractedType === null) {
+			if ($this->isExplicitMixed) {
+				if ($type->isExplicitMixed) {
+					return IsSuperTypeOfResult::createYes();
+				}
+				return IsSuperTypeOfResult::createMaybe();
+			}
+
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type->subtractedType === null) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		$isSuperType = $type->subtractedType->isSuperTypeOf($this->subtractedType);
+		if ($isSuperType->yes()) {
+			if ($this->isExplicitMixed) {
+				if ($type->isExplicitMixed) {
+					return IsSuperTypeOfResult::createYes();
+				}
+				return IsSuperTypeOfResult::createMaybe();
+			}
+
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return IsSuperTypeOfResult::createMaybe();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($this->subtractedType === null || $type instanceof NeverType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof self) {
+			if ($type->subtractedType === null) {
+				return IsSuperTypeOfResult::createMaybe();
+			}
+			$isSuperType = $type->subtractedType->isSuperTypeOf($this->subtractedType);
+			if ($isSuperType->yes()) {
+				return $isSuperType;
+			}
+
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		$result = $this->subtractedType->isSuperTypeOf($type)->negate();
+		if ($result->no()) {
+			return IsSuperTypeOfResult::createNo([
+				sprintf(
+					'Type %s has already been eliminated from %s.',
+					$this->subtractedType->describe(VerbosityLevel::precise()),
+					$this->describe(VerbosityLevel::typeOnly()),
+				),
+			]);
+		}
+
+		return $result;
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		if ($this->subtractedType !== null) {
+			return new self($this->isExplicitMixed, TypeCombinator::remove($this->subtractedType, new ConstantArrayType([], [])));
+		}
+		return $this;
+	}
+
+	public function getKeysArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::intersect(new ArrayType(new IntegerType(), new UnionType([new IntegerType(), new StringType()])), new AccessoryArrayListType());
+	}
+
+	public function getValuesArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::intersect(new ArrayType(new IntegerType(), new MixedType($this->isExplicitMixed)), new AccessoryArrayListType());
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::intersect(new ArrayType(new IntegerType(), new MixedType($this->isExplicitMixed)), new AccessoryArrayListType());
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType($this->getIterableValueType(), $valueType);
+	}
+
+	public function flipArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function popArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::union(new IntegerType(), new StringType(), new ConstantBooleanType(false));
+	}
+
+	public function shiftArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function shuffleArray(): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::intersect(new ArrayType(new IntegerType(), new MixedType($this->isExplicitMixed)), new AccessoryArrayListType());
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		if ($this->isArray()->no()) {
+			return new ErrorType();
+		}
+
+		return new ArrayType(new MixedType($this->isExplicitMixed), new MixedType($this->isExplicitMixed));
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new CallableType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [new TrivialParametersAcceptor()];
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if ($this->subtractedType === null) {
+			if ($type->subtractedType === null) {
+				return true;
+			}
+
+			return false;
+		}
+
+		if ($type->subtractedType === null) {
+			return false;
+		}
+
+		return $this->subtractedType->equals($type->subtractedType);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof self && !$otherType instanceof TemplateMixedType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($this->subtractedType !== null) {
+			$isSuperType = $this->subtractedType->isSuperTypeOf($otherType);
+			if ($isSuperType->yes()) {
+				return IsSuperTypeOfResult::createNo();
+			}
+		}
+
+		return IsSuperTypeOfResult::createMaybe();
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		$isSuperType = $this->isSuperTypeOf($acceptingType)->toAcceptsResult();
+		if ($isSuperType->no()) {
+			return $isSuperType;
+		}
+		return AcceptsResult::createYes();
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new self();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ObjectWithoutClassType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ObjectWithoutClassType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$property = new DummyPropertyReflection();
+		return new CallbackUnresolvedPropertyPrototypeReflection(
+			$property,
+			$property->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$method = new DummyMethodReflection($methodName);
+		return new CallbackUnresolvedMethodPrototypeReflection(
+			$method,
+			$method->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return new DummyClassConstantReflection($constantName);
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'mixed',
+			static fn (): string => 'mixed',
+			function () use ($level): string {
+				$description = 'mixed';
+				if ($this->subtractedType !== null) {
+					$description .= $this->subtractedType instanceof UnionType
+						? sprintf('~(%s)', $this->subtractedType->describe($level))
+						: sprintf('~%s', $this->subtractedType->describe($level));
+				}
+
+				return $description;
+			},
+			function () use ($level): string {
+				$description = 'mixed';
+				if ($this->subtractedType !== null) {
+					$description .= $this->subtractedType instanceof UnionType
+						? sprintf('~(%s)', $this->subtractedType->describe($level))
+						: sprintf('~%s', $this->subtractedType->describe($level));
+				}
+
+				if ($this->isExplicitMixed) {
+					$description .= '=explicit';
+				} else {
+					$description .= '=implicit';
+				}
+
+				return $description;
+			},
+		);
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(StaticTypeFactory::falsey())->yes()) {
+				return new ConstantBooleanType(true);
+			}
+		}
+
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return TypeCombinator::union(
+			$this->toInteger(),
+			$this->toFloat(),
+		);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toInteger(): Type
+	{
+		$castsToZero = new UnionType([
+			new NullType(),
+			new ConstantBooleanType(false),
+			new ConstantIntegerType(0),
+			new ConstantArrayType([], []),
+			new StringType(),
+			new FloatType(), // every 0.x float casts to int(0)
+		]);
+		if (
+			$this->subtractedType !== null
+			&& $this->subtractedType->isSuperTypeOf($castsToZero)->yes()
+		) {
+			return new UnionType([
+				IntegerRangeType::fromInterval(null, -1),
+				IntegerRangeType::fromInterval(1, null),
+			]);
+		}
+
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		if ($this->subtractedType !== null) {
+			$castsToEmptyString = new UnionType([
+				new NullType(),
+				new ConstantBooleanType(false),
+				new ConstantStringType(''),
+			]);
+			if ($this->subtractedType->isSuperTypeOf($castsToEmptyString)->yes()) {
+				$accessories = [
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+				];
+
+				$castsToZeroString = new UnionType([
+					new ConstantFloatType(0.0),
+					new ConstantStringType('0'),
+					new ConstantIntegerType(0),
+				]);
+				if ($this->subtractedType->isSuperTypeOf($castsToZeroString)->yes()) {
+					$accessories[] = new AccessoryNonFalsyStringType();
+				}
+				return new IntersectionType(
+					$accessories,
+				);
+			}
+		}
+
+		return new StringType();
+	}
+
+	public function toArray(): Type
+	{
+		$mixed = new self($this->isExplicitMixed);
+
+		return new ArrayType($mixed, $mixed);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new BenevolentUnionType([new IntegerType(), new StringType()]);
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new IterableType(new MixedType(), new MixedType()))->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->isIterable();
+	}
+
+	public function getArraySize(): Type
+	{
+		if ($this->isIterable()->no()) {
+			return new ErrorType();
+		}
+
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$offsetAccessibles = new UnionType([
+				new StringType(),
+				new ArrayType(new MixedType(), new MixedType()),
+				new ObjectType(ArrayAccess::class),
+			]);
+
+			if ($this->subtractedType->isSuperTypeOf($offsetAccessibles)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ObjectWithoutClassType())->yes()) {
+				return TrinaryLogic::createYes();
+			}
+		}
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($this->isOffsetAccessible()->no()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function isExplicitMixed(): bool
+	{
+		return $this->isExplicitMixed;
+	}
+
+	public function subtract(Type $type): Type
+	{
+		if ($type instanceof self && !$type instanceof TemplateType) {
+			return new NeverType();
+		}
+		if ($this->subtractedType !== null) {
+			$type = TypeCombinator::union($this->subtractedType, $type);
+		}
+
+		return new self($this->isExplicitMixed, $type);
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		return new self($this->isExplicitMixed);
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		return new self($this->isExplicitMixed, $subtractedType);
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		return $this->subtractedType;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ArrayType(new MixedType(), new MixedType()))->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return $this->isArray();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$oversizedArray = TypeCombinator::intersect(
+				new ArrayType(new MixedType(), new MixedType()),
+				new OversizedArrayType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($oversizedArray)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$list = TypeCombinator::intersect(
+				new ArrayType(new IntegerType(), new MixedType()),
+				new AccessoryArrayListType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($list)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new NullType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ConstantBooleanType(true))->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new ConstantBooleanType(false))->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new BooleanType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new FloatType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new IntegerType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new StringType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$numericString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryNumericStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($numericString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$nonEmptyString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($nonEmptyString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$nonFalsyString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($nonFalsyString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$literalString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryLiteralStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($literalString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$lowercaseString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryLowercaseStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($lowercaseString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			$uppercaseString = TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryUppercaseStringType(),
+			);
+
+			if ($this->subtractedType->isSuperTypeOf($uppercaseString)->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new StringType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+			if ($this->subtractedType->isSuperTypeOf(new ClassStringType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		if (!$this->isClassString()->no()) {
+			return new ObjectWithoutClassType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		$objectOrClass = new UnionType([
+			new ObjectWithoutClassType(),
+			new ClassStringType(),
+		]);
+		if (!$this->isSuperTypeOf($objectOrClass)->no()) {
+			return new ObjectWithoutClassType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new VoidType())->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		if ($this->subtractedType !== null) {
+			if ($this->subtractedType->isSuperTypeOf(new UnionType([new BooleanType(), new FloatType(), new IntegerType(), new StringType()]))->yes()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($this->isSuperTypeOf($typeToRemove)->yes()) {
+			return $this->subtract($typeToRemove);
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('mixed');
+	}
+
+}
diff --git a/src/Type/NeverType.php b/src/Type/NeverType.php
new file mode 100644
index 00000000..06698f7f
--- /dev/null
+++ b/src/Type/NeverType.php
@@ -0,0 +1,537 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+
+/** @api */
+class NeverType implements CompoundType
+{
+
+	use UndecidedBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct(private bool $isExplicit = false)
+	{
+	}
+
+	public function isExplicit(): bool
+	{
+		return $this->isExplicit;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return AcceptsResult::createYes();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		return IsSuperTypeOfResult::createYes();
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return $this->isSubTypeOf($acceptingType)->toAcceptsResult();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return '*NEVER*';
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new NeverType();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new NeverType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new NeverType();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new NeverType();
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new NeverType();
+	}
+
+	public function flipArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return new NeverType();
+	}
+
+	public function popArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return new NeverType();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new NeverType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return new NeverType();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new NeverType();
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function toNumber(): Type
+	{
+		return $this;
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this;
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toInteger(): Type
+	{
+		return $this;
+	}
+
+	public function toFloat(): Type
+	{
+		return $this;
+	}
+
+	public function toArray(): Type
+	{
+		return $this;
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return $this;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('never');
+	}
+
+}
diff --git a/src/Type/NewObjectType.php b/src/Type/NewObjectType.php
new file mode 100644
index 00000000..d032a53f
--- /dev/null
+++ b/src/Type/NewObjectType.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function sprintf;
+
+/** @api */
+class NewObjectType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->type->getReferencedClasses();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return $this->type->getReferencedTemplateTypes($positionVariance);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->type->equals($type->type);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('new<%s>', $this->type->describe($level));
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->type);
+	}
+
+	protected function getResult(): Type
+	{
+		return $this->type->getObjectTypeOrClassStringObjectType();
+	}
+
+	/**
+	 * @param callable(Type): Type $cb
+	 */
+	public function traverse(callable $cb): Type
+	{
+		$type = $cb($this->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$type = $cb($this->type, $right->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new GenericTypeNode(new IdentifierTypeNode('new'), [$this->type->toPhpDocNode()]);
+	}
+
+}
diff --git a/src/Type/NonAcceptingNeverType.php b/src/Type/NonAcceptingNeverType.php
new file mode 100644
index 00000000..584b843b
--- /dev/null
+++ b/src/Type/NonAcceptingNeverType.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/** @api */
+class NonAcceptingNeverType extends NeverType
+{
+
+	/** @api */
+	public function __construct()
+	{
+		parent::__construct(true);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+		if ($type instanceof parent) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof NeverType) {
+			return AcceptsResult::createYes();
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'never';
+	}
+
+}
diff --git a/src/Type/NonexistentParentClassType.php b/src/Type/NonexistentParentClassType.php
new file mode 100644
index 00000000..dfe715dd
--- /dev/null
+++ b/src/Type/NonexistentParentClassType.php
@@ -0,0 +1,201 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+
+class NonexistentParentClassType implements Type
+{
+
+	use JustNullableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'parent';
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('parent');
+	}
+
+}
diff --git a/src/Type/NullType.php b/src/Type/NullType.php
new file mode 100644
index 00000000..989e5be4
--- /dev/null
+++ b/src/Type/NullType.php
@@ -0,0 +1,405 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Traits\FalseyBooleanTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+
+/** @api */
+class NullType implements ConstantScalarType
+{
+
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use FalseyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use NonRemoveableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	/**
+	 * @return null
+	 */
+	public function getValue()
+	{
+		return null;
+	}
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return $this;
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof self) {
+			return AcceptsResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createNo();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($otherType instanceof ConstantScalarType) {
+			return TrinaryLogic::createFromBoolean(null < $otherType->getValue());
+		}
+
+		if ($otherType instanceof CompoundType) {
+			return $otherType->isGreaterThan($this, $phpVersion);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($otherType instanceof ConstantScalarType) {
+			return TrinaryLogic::createFromBoolean(null <= $otherType->getValue());
+		}
+
+		if ($otherType instanceof CompoundType) {
+			return $otherType->isGreaterThanOrEqual($this, $phpVersion);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'null';
+	}
+
+	public function toNumber(): Type
+	{
+		return new ConstantIntegerType(0);
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toString(): Type
+	{
+		return new ConstantStringType('');
+	}
+
+	public function toInteger(): Type
+	{
+		return $this->toNumber();
+	}
+
+	public function toFloat(): Type
+	{
+		return $this->toNumber()->toFloat();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType([], []);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ConstantStringType('');
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		$array = new ConstantArrayType([], []);
+		return $array->setOffsetValueType($offsetType, $valueType, $unionValues);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [$this];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [$this->getValue()];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type instanceof ConstantScalarType) {
+			return LooseComparisonHelper::compareConstantScalars($this, $type, $phpVersion);
+		}
+
+		if ($type->isConstantArray()->yes() && $type->isIterableAtLeastOnce()->no()) {
+			// @phpstan-ignore equal.alwaysTrue, equal.notAllowed
+			return new ConstantBooleanType($this->getValue() == []); // phpcs:ignore
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->looseCompare($this, $phpVersion);
+		}
+
+		return new BooleanType();
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		return new NeverType();
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		// All falsey types except '0'
+		return new UnionType([
+			new NullType(),
+			new ConstantBooleanType(false),
+			new ConstantIntegerType(0),
+			new ConstantFloatType(0.0),
+			new ConstantStringType(''),
+			new ConstantArrayType([], []),
+		]);
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		// All truthy types, but also '0'
+		return new MixedType(false, new UnionType([
+			new NullType(),
+			new ConstantBooleanType(false),
+			new ConstantIntegerType(0),
+			new ConstantFloatType(0.0),
+			new ConstantStringType(''),
+			new ConstantArrayType([], []),
+		]));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [$this];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new UnionType(
+			[
+				new ConstantIntegerType(0),
+				new ConstantIntegerType(1),
+			],
+		);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('null');
+	}
+
+}
diff --git a/src/Type/ObjectShapePropertyReflection.php b/src/Type/ObjectShapePropertyReflection.php
new file mode 100644
index 00000000..0bb80164
--- /dev/null
+++ b/src/Type/ObjectShapePropertyReflection.php
@@ -0,0 +1,148 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use stdClass;
+
+final class ObjectShapePropertyReflection implements ExtendedPropertyReflection
+{
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getDeclaringClass(): ClassReflection
+	{
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		return $reflectionProvider->getClass(stdClass::class);
+	}
+
+	public function isStatic(): bool
+	{
+		return false;
+	}
+
+	public function isPrivate(): bool
+	{
+		return false;
+	}
+
+	public function isPublic(): bool
+	{
+		return true;
+	}
+
+	public function getDocComment(): ?string
+	{
+		return null;
+	}
+
+	public function hasPhpDocType(): bool
+	{
+		return true;
+	}
+
+	public function getPhpDocType(): Type
+	{
+		return $this->type;
+	}
+
+	public function hasNativeType(): bool
+	{
+		return false;
+	}
+
+	public function getNativeType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getReadableType(): Type
+	{
+		return $this->type;
+	}
+
+	public function getWritableType(): Type
+	{
+		return new NeverType();
+	}
+
+	public function canChangeTypeAfterAssignment(): bool
+	{
+		return false;
+	}
+
+	public function isReadable(): bool
+	{
+		return true;
+	}
+
+	public function isWritable(): bool
+	{
+		return false;
+	}
+
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isAbstract(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFinal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isVirtual(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasHook(string $hookType): bool
+	{
+		return false;
+	}
+
+	public function getHook(string $hookType): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isProtectedSet(): bool
+	{
+		return false;
+	}
+
+	public function isPrivateSet(): bool
+	{
+		return false;
+	}
+
+	public function getAttributes(): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Type/ObjectShapeType.php b/src/Type/ObjectShapeType.php
new file mode 100644
index 00000000..f51a90bb
--- /dev/null
+++ b/src/Type/ObjectShapeType.php
@@ -0,0 +1,526 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
+use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\ObjectShapeItemNode;
+use PHPStan\PhpDocParser\Ast\Type\ObjectShapeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\MissingPropertyFromReflectionException;
+use PHPStan\Reflection\Php\UniversalObjectCratesClassReflectionExtension;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\ObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function array_filter;
+use function array_key_exists;
+use function array_values;
+use function count;
+use function implode;
+use function in_array;
+use function sprintf;
+
+/** @api */
+class ObjectShapeType implements Type
+{
+
+	use ObjectTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/**
+	 * @api
+	 * @param array<string, Type> $properties
+	 * @param list<string> $optionalProperties
+	 */
+	public function __construct(private array $properties, private array $optionalProperties)
+	{
+	}
+
+	/**
+	 * @return array<string, Type>
+	 */
+	public function getProperties(): array
+	{
+		return $this->properties;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getOptionalProperties(): array
+	{
+		return $this->optionalProperties;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = [];
+		foreach ($this->properties as $propertyType) {
+			foreach ($propertyType->getReferencedClasses() as $referencedClass) {
+				$classes[] = $referencedClass;
+			}
+		}
+
+		return $classes;
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		if (!array_key_exists($propertyName, $this->properties)) {
+			return TrinaryLogic::createNo();
+		}
+
+		if (in_array($propertyName, $this->optionalProperties, true)) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createYes();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		if (!array_key_exists($propertyName, $this->properties)) {
+			throw new ShouldNotHappenException();
+		}
+
+		$property = new ObjectShapePropertyReflection($this->properties[$propertyName]);
+		return new CallbackUnresolvedPropertyPrototypeReflection(
+			$property,
+			$property->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		foreach ($type->getObjectClassReflections() as $classReflection) {
+			if (!UniversalObjectCratesClassReflectionExtension::isUniversalObjectCrate(
+				$reflectionProvider,
+				$classReflection,
+			)) {
+				continue;
+			}
+
+			return AcceptsResult::createMaybe();
+		}
+
+		$result = AcceptsResult::createYes();
+		$scope = new OutOfClassScope();
+		foreach ($this->properties as $propertyName => $propertyType) {
+			$typeHasProperty = $type->hasProperty($propertyName);
+			$hasProperty = new AcceptsResult(
+				$typeHasProperty,
+				$typeHasProperty->yes() ? [] : [
+					sprintf(
+						'%s %s have property $%s.',
+						$type->describe(VerbosityLevel::typeOnly()),
+						$typeHasProperty->no() ? 'does not' : 'might not',
+						$propertyName,
+					),
+				],
+			);
+			if ($hasProperty->no()) {
+				if (in_array($propertyName, $this->optionalProperties, true)) {
+					continue;
+				}
+				return $hasProperty;
+			}
+			if ($hasProperty->maybe() && in_array($propertyName, $this->optionalProperties, true)) {
+				$hasProperty = AcceptsResult::createYes();
+			}
+
+			$result = $result->and($hasProperty);
+
+			try {
+				$otherProperty = $type->getProperty($propertyName, $scope);
+			} catch (MissingPropertyFromReflectionException) {
+				return new AcceptsResult(
+					$result->result,
+					[
+						sprintf(
+							'%s %s not have property $%s.',
+							$type->describe(VerbosityLevel::typeOnly()),
+							$result->no() ? 'does' : 'might',
+							$propertyName,
+						),
+					],
+				);
+			}
+			if (!$otherProperty->isPublic()) {
+				return new AcceptsResult(TrinaryLogic::createNo(), [
+					sprintf('Property %s::$%s is not public.', $otherProperty->getDeclaringClass()->getDisplayName(), $propertyName),
+				]);
+			}
+
+			if ($otherProperty->isStatic()) {
+				return new AcceptsResult(TrinaryLogic::createNo(), [
+					sprintf('Property %s::$%s is static.', $otherProperty->getDeclaringClass()->getDisplayName(), $propertyName),
+				]);
+			}
+
+			if (!$otherProperty->isReadable()) {
+				return new AcceptsResult(TrinaryLogic::createNo(), [
+					sprintf('Property %s::$%s is not readable.', $otherProperty->getDeclaringClass()->getDisplayName(), $propertyName),
+				]);
+			}
+
+			$otherPropertyType = $otherProperty->getReadableType();
+			$verbosity = VerbosityLevel::getRecommendedLevelByType($propertyType, $otherPropertyType);
+			$acceptsValue = $propertyType->accepts($otherPropertyType, $strictTypes)->decorateReasons(
+				static fn (string $reason) => sprintf(
+					'Property ($%s) type %s does not accept type %s: %s',
+					$propertyName,
+					$propertyType->describe($verbosity),
+					$otherPropertyType->describe($verbosity),
+					$reason,
+				),
+			);
+			if (!$acceptsValue->yes() && count($acceptsValue->reasons) === 0) {
+				$acceptsValue = new AcceptsResult($acceptsValue->result, [
+					sprintf(
+						'Property ($%s) type %s does not accept type %s.',
+						$propertyName,
+						$propertyType->describe($verbosity),
+						$otherPropertyType->describe($verbosity),
+					),
+				]);
+			}
+			if ($acceptsValue->no()) {
+				return $acceptsValue;
+			}
+			$result = $result->and($acceptsValue);
+		}
+
+		return $result->and(new AcceptsResult($type->isObject(), []));
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof ObjectWithoutClassType) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		foreach ($type->getObjectClassReflections() as $classReflection) {
+			if (!UniversalObjectCratesClassReflectionExtension::isUniversalObjectCrate(
+				$reflectionProvider,
+				$classReflection,
+			)) {
+				continue;
+			}
+
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		$result = IsSuperTypeOfResult::createYes();
+		$scope = new OutOfClassScope();
+		foreach ($this->properties as $propertyName => $propertyType) {
+			$hasProperty = new IsSuperTypeOfResult($type->hasProperty($propertyName), []);
+			if ($hasProperty->no()) {
+				if (in_array($propertyName, $this->optionalProperties, true)) {
+					continue;
+				}
+				return $hasProperty;
+			}
+			if ($hasProperty->maybe() && in_array($propertyName, $this->optionalProperties, true)) {
+				$hasProperty = IsSuperTypeOfResult::createYes();
+			}
+
+			$result = $result->and($hasProperty);
+
+			try {
+				$otherProperty = $type->getProperty($propertyName, $scope);
+			} catch (MissingPropertyFromReflectionException) {
+				return $result;
+			}
+
+			if (!$otherProperty->isPublic()) {
+				return IsSuperTypeOfResult::createNo();
+			}
+
+			if ($otherProperty->isStatic()) {
+				return IsSuperTypeOfResult::createNo();
+			}
+
+			if (!$otherProperty->isReadable()) {
+				return IsSuperTypeOfResult::createNo();
+			}
+
+			$otherPropertyType = $otherProperty->getReadableType();
+			$isSuperType = $propertyType->isSuperTypeOf($otherPropertyType);
+			if ($isSuperType->no()) {
+				return $isSuperType;
+			}
+			$result = $result->and($isSuperType);
+		}
+
+		return $result->and(new IsSuperTypeOfResult($type->isObject(), []));
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if (count($this->properties) !== count($type->properties)) {
+			return false;
+		}
+
+		foreach ($this->properties as $name => $propertyType) {
+			if (!array_key_exists($name, $type->properties)) {
+				return false;
+			}
+
+			if (!$propertyType->equals($type->properties[$name])) {
+				return false;
+			}
+		}
+
+		if (count($this->optionalProperties) !== count($type->optionalProperties)) {
+			return false;
+		}
+
+		foreach ($this->optionalProperties as $name) {
+			if (in_array($name, $type->optionalProperties, true)) {
+				continue;
+			}
+
+			return false;
+		}
+
+		return true;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof HasPropertyType) {
+			$properties = $this->properties;
+			unset($properties[$typeToRemove->getPropertyName()]);
+			$optionalProperties = array_values(array_filter($this->optionalProperties, static fn (string $propertyName) => $propertyName !== $typeToRemove->getPropertyName()));
+
+			return new self($properties, $optionalProperties);
+		}
+
+		return null;
+	}
+
+	public function makePropertyRequired(string $propertyName): self
+	{
+		if (array_key_exists($propertyName, $this->properties)) {
+			$optionalProperties = array_values(array_filter($this->optionalProperties, static fn (string $currentPropertyName) => $currentPropertyName !== $propertyName));
+
+			return new self($this->properties, $optionalProperties);
+		}
+
+		return $this;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		if ($receivedType instanceof UnionType || $receivedType instanceof IntersectionType) {
+			return $receivedType->inferTemplateTypesOn($this);
+		}
+
+		if ($receivedType instanceof self) {
+			$typeMap = TemplateTypeMap::createEmpty();
+			$scope = new OutOfClassScope();
+			foreach ($this->properties as $name => $propertyType) {
+				if ($receivedType->hasProperty($name)->no()) {
+					continue;
+				}
+
+				try {
+					$receivedProperty = $receivedType->getProperty($name, $scope);
+				} catch (MissingPropertyFromReflectionException) {
+					continue;
+				}
+				if (!$receivedProperty->isPublic()) {
+					continue;
+				}
+				if ($receivedProperty->isStatic()) {
+					continue;
+				}
+				$receivedPropertyType = $receivedProperty->getReadableType();
+				$typeMap = $typeMap->union($propertyType->inferTemplateTypes($receivedPropertyType));
+			}
+
+			return $typeMap;
+		}
+
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$variance = $positionVariance->compose(TemplateTypeVariance::createCovariant());
+		$references = [];
+		foreach ($this->properties as $propertyType) {
+			foreach ($propertyType->getReferencedTemplateTypes($variance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$callback = function () use ($level): string {
+			$items = [];
+			foreach ($this->properties as $name => $propertyType) {
+				$optional = in_array($name, $this->optionalProperties, true);
+				$items[] = sprintf('%s%s: %s', $name, $optional ? '?' : '', $propertyType->describe($level));
+			}
+			return sprintf('object{%s}', implode(', ', $items));
+		};
+		return $level->handle(
+			$callback,
+			$callback,
+		);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$properties = [];
+		$stillOriginal = true;
+
+		foreach ($this->properties as $name => $propertyType) {
+			$transformed = $cb($propertyType);
+			if ($transformed !== $propertyType) {
+				$stillOriginal = false;
+			}
+
+			$properties[$name] = $transformed;
+		}
+
+		if ($stillOriginal) {
+			return $this;
+		}
+
+		return new self($properties, $this->optionalProperties);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right->isObject()->yes()) {
+			return $this;
+		}
+
+		$properties = [];
+		$stillOriginal = true;
+
+		$scope = new OutOfClassScope();
+		foreach ($this->properties as $name => $propertyType) {
+			if (!$right->hasProperty($name)->yes()) {
+				return $this;
+			}
+			$transformed = $cb($propertyType, $right->getProperty($name, $scope)->getReadableType());
+			if ($transformed !== $propertyType) {
+				$stillOriginal = false;
+			}
+
+			$properties[$name] = $transformed;
+		}
+
+		if ($stillOriginal) {
+			return $this;
+		}
+
+		return new self($properties, $this->optionalProperties);
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		if (!$exponent instanceof NeverType && !$this->isSuperTypeOf($exponent)->no()) {
+			return TypeCombinator::union($this, $exponent);
+		}
+
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		$items = [];
+		foreach ($this->properties as $name => $type) {
+			if (ConstantArrayType::isValidIdentifier($name)) {
+				$keyNode = new IdentifierTypeNode($name);
+			} else {
+				$keyPhpDocNode = (new ConstantStringType($name))->toPhpDocNode();
+				if (!$keyPhpDocNode instanceof ConstTypeNode) {
+					continue;
+				}
+
+				/** @var ConstExprStringNode $keyNode */
+				$keyNode = $keyPhpDocNode->constExpr;
+			}
+			$items[] = new ObjectShapeItemNode(
+				$keyNode,
+				in_array($name, $this->optionalProperties, true),
+				$type->toPhpDocNode(),
+			);
+		}
+
+		return new ObjectShapeNode($items);
+	}
+
+}
diff --git a/src/Type/ObjectType.php b/src/Type/ObjectType.php
new file mode 100644
index 00000000..4bbb787e
--- /dev/null
+++ b/src/Type/ObjectType.php
@@ -0,0 +1,1621 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use ArrayAccess;
+use ArrayObject;
+use Closure;
+use Countable;
+use Iterator;
+use IteratorAggregate;
+use PHPStan\Analyser\OutOfClassScope;
+use PHPStan\Broker\ClassNotFoundException;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\Callables\FunctionCallableVariant;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Php\UniversalObjectCratesClassReflectionExtension;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\Reflection\Type\CalledOnTypeUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\CalledOnTypeUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnionTypeUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Traits\MaybeIterableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use Traversable;
+use function array_key_exists;
+use function array_map;
+use function array_values;
+use function count;
+use function implode;
+use function in_array;
+use function sprintf;
+use function strtolower;
+
+/** @api */
+class ObjectType implements TypeWithClassName, SubtractableType
+{
+
+	use MaybeIterableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private const EXTRA_OFFSET_CLASSES = [
+		'DOMNamedNodeMap', // Only read and existence
+		'Dom\NamedNodeMap', // Only read and existence
+		'DOMNodeList', // Only read and existence
+		'Dom\NodeList', // Only read and existence
+		'Dom\HTMLCollection', // Only read and existence
+		'Dom\DtdNamedNodeMap', // Only read and existence
+		'PDORow', // Only read and existence
+		'ResourceBundle', // Only read
+		'FFI\CData', // Very funky and weird
+		'SimpleXMLElement',
+		'Threaded',
+	];
+
+	private ?Type $subtractedType;
+
+	/** @var array<string, array<string, IsSuperTypeOfResult>> */
+	private static array $superTypes = [];
+
+	private ?self $cachedParent = null;
+
+	/** @var self[]|null */
+	private ?array $cachedInterfaces = null;
+
+	/** @var array<string, array<string, array<string, UnresolvedMethodPrototypeReflection>>> */
+	private static array $methods = [];
+
+	/** @var array<string, array<string, array<string, UnresolvedPropertyPrototypeReflection>>> */
+	private static array $properties = [];
+
+	/** @var array<string, array<string, self|null>> */
+	private static array $ancestors = [];
+
+	/** @var array<string, self|null> */
+	private array $currentAncestors = [];
+
+	private ?string $cachedDescription = null;
+
+	/** @var array<string, list<EnumCaseObjectType>> */
+	private static array $enumCases = [];
+
+	/** @api */
+	public function __construct(
+		private string $className,
+		?Type $subtractedType = null,
+		private ?ClassReflection $classReflection = null,
+	)
+	{
+		if ($subtractedType instanceof NeverType) {
+			$subtractedType = null;
+		}
+
+		$this->subtractedType = $subtractedType;
+	}
+
+	public static function resetCaches(): void
+	{
+		self::$superTypes = [];
+		self::$methods = [];
+		self::$properties = [];
+		self::$ancestors = [];
+		self::$enumCases = [];
+	}
+
+	private static function createFromReflection(ClassReflection $reflection): self
+	{
+		if (!$reflection->isGeneric()) {
+			return new ObjectType($reflection->getName());
+		}
+
+		return new GenericObjectType(
+			$reflection->getName(),
+			$reflection->typeMapToList($reflection->getActiveTemplateTypeMap()),
+			null,
+			null,
+			$reflection->varianceMapToList($reflection->getCallSiteVarianceMap()),
+		);
+	}
+
+	public function getClassName(): string
+	{
+		return $this->className;
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		if ($classReflection->hasProperty($propertyName)) {
+			return TrinaryLogic::createYes();
+		}
+
+		if ($classReflection->allowsDynamicProperties()) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		if (!$classReflection->isFinal()) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createNo();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		if (!$scope->isInClass()) {
+			$canAccessProperty = 'no';
+		} else {
+			$canAccessProperty = $scope->getClassReflection()->getName();
+		}
+		$description = $this->describeCache();
+
+		if (isset(self::$properties[$description][$propertyName][$canAccessProperty])) {
+			return self::$properties[$description][$propertyName][$canAccessProperty];
+		}
+
+		$nakedClassReflection = $this->getNakedClassReflection();
+		if ($nakedClassReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		if ($nakedClassReflection->isEnum()) {
+			if (
+				$propertyName === 'name'
+				|| ($propertyName === 'value' && $nakedClassReflection->isBackedEnum())
+			) {
+				$properties = [];
+				foreach ($this->getEnumCases() as $enumCase) {
+					$properties[] = $enumCase->getUnresolvedPropertyPrototype($propertyName, $scope);
+				}
+
+				if (count($properties) > 0) {
+					if (count($properties) === 1) {
+						return $properties[0];
+					}
+
+					return new UnionTypeUnresolvedPropertyPrototypeReflection($propertyName, $properties);
+				}
+			}
+		}
+
+		if (!$nakedClassReflection->hasNativeProperty($propertyName)) {
+			$nakedClassReflection = $this->getClassReflection();
+		}
+
+		if ($nakedClassReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		$property = $nakedClassReflection->getProperty($propertyName, $scope);
+
+		$ancestor = $this->getAncestorWithClassName($property->getDeclaringClass()->getName());
+		$resolvedClassReflection = null;
+		if ($ancestor !== null && $ancestor->hasProperty($propertyName)->yes()) {
+			$resolvedClassReflection = $ancestor->getClassReflection();
+			if ($ancestor !== $this) {
+				$property = $ancestor->getUnresolvedPropertyPrototype($propertyName, $scope)->getNakedProperty();
+			}
+		}
+		if ($resolvedClassReflection === null) {
+			$resolvedClassReflection = $property->getDeclaringClass();
+		}
+
+		return self::$properties[$description][$propertyName][$canAccessProperty] = new CalledOnTypeUnresolvedPropertyPrototypeReflection(
+			$property,
+			$resolvedClassReflection,
+			true,
+			$this,
+		);
+	}
+
+	public function getPropertyWithoutTransformingStatic(string $propertyName, ClassMemberAccessAnswerer $scope): PropertyReflection
+	{
+		$classReflection = $this->getNakedClassReflection();
+		if ($classReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		if (!$classReflection->hasProperty($propertyName)) {
+			$classReflection = $this->getClassReflection();
+		}
+
+		if ($classReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		return $classReflection->getProperty($propertyName, $scope);
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [$this->className];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		if ($this->className === '') {
+			return [];
+		}
+		return [$this->className];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return [];
+		}
+
+		return [$classReflection];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof StaticType) {
+			return $this->checkSubclassAcceptability($type->getClassName());
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if ($type instanceof ClosureType) {
+			return new AcceptsResult($this->isInstanceOf(Closure::class), []);
+		}
+
+		if ($type instanceof ObjectWithoutClassType) {
+			return AcceptsResult::createMaybe();
+		}
+
+		$thatClassNames = $type->getObjectClassNames();
+		if (count($thatClassNames) > 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($thatClassNames === []) {
+			return AcceptsResult::createNo();
+		}
+
+		return $this->checkSubclassAcceptability($thatClassNames[0]);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		$thatClassNames = $type->getObjectClassNames();
+		if (!$type instanceof CompoundType && $thatClassNames === [] && !$type instanceof ObjectWithoutClassType) {
+			return IsSuperTypeOfResult::createNo();
+		}
+
+		$thisDescription = $this->describeCache();
+
+		if ($type instanceof self) {
+			$description = $type->describeCache();
+		} else {
+			$description = $type->describe(VerbosityLevel::cache());
+		}
+
+		if (isset(self::$superTypes[$thisDescription][$description])) {
+			return self::$superTypes[$thisDescription][$description];
+		}
+
+		if ($type instanceof CompoundType) {
+			return self::$superTypes[$thisDescription][$description] = $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof ClosureType) {
+			return self::$superTypes[$thisDescription][$description] = new IsSuperTypeOfResult($this->isInstanceOf(Closure::class), []);
+		}
+
+		if ($type instanceof ObjectWithoutClassType) {
+			if ($type->getSubtractedType() !== null) {
+				$isSuperType = $type->getSubtractedType()->isSuperTypeOf($this);
+				if ($isSuperType->yes()) {
+					return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createNo();
+				}
+			}
+			return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createMaybe();
+		}
+
+		$transformResult = static fn (IsSuperTypeOfResult $result) => $result;
+		if ($this->subtractedType !== null) {
+			$isSuperType = $this->subtractedType->isSuperTypeOf($type);
+			if ($isSuperType->yes()) {
+				return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createNo();
+			}
+			if ($isSuperType->maybe()) {
+				$transformResult = static fn (IsSuperTypeOfResult $result) => $result->and(IsSuperTypeOfResult::createMaybe());
+			}
+		}
+
+		if (
+			$type instanceof SubtractableType
+			&& $type->getSubtractedType() !== null
+		) {
+			$isSuperType = $type->getSubtractedType()->isSuperTypeOf($this);
+			if ($isSuperType->yes()) {
+				return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createNo();
+			}
+		}
+
+		$thisClassName = $this->className;
+		if (count($thatClassNames) > 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($thatClassNames[0] === $thisClassName) {
+			return $transformResult(IsSuperTypeOfResult::createYes());
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		$thisClassReflection = $this->getClassReflection();
+
+		if ($thisClassReflection === null || !$reflectionProvider->hasClass($thatClassNames[0])) {
+			return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createMaybe();
+		}
+
+		$thatClassReflection = $reflectionProvider->getClass($thatClassNames[0]);
+
+		if ($thisClassReflection->isTrait() || $thatClassReflection->isTrait()) {
+			return IsSuperTypeOfResult::createNo();
+		}
+
+		if ($thisClassReflection->getName() === $thatClassReflection->getName()) {
+			return self::$superTypes[$thisDescription][$description] = $transformResult(IsSuperTypeOfResult::createYes());
+		}
+
+		if ($thatClassReflection->isSubclassOf($thisClassName)) {
+			return self::$superTypes[$thisDescription][$description] = $transformResult(IsSuperTypeOfResult::createYes());
+		}
+
+		if ($thisClassReflection->isSubclassOf($thatClassNames[0])) {
+			return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($thisClassReflection->isInterface() && !$thatClassReflection->getNativeReflection()->isFinal()) {
+			return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($thatClassReflection->isInterface() && !$thisClassReflection->getNativeReflection()->isFinal()) {
+			return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createMaybe();
+		}
+
+		return self::$superTypes[$thisDescription][$description] = IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if ($type instanceof EnumCaseObjectType) {
+			return false;
+		}
+
+		if ($this->className !== $type->className) {
+			return false;
+		}
+
+		if ($this->subtractedType === null) {
+			return $type->subtractedType === null;
+		}
+
+		if ($type->subtractedType === null) {
+			return false;
+		}
+
+		return $this->subtractedType->equals($type->subtractedType);
+	}
+
+	private function checkSubclassAcceptability(string $thatClass): AcceptsResult
+	{
+		if ($this->className === $thatClass) {
+			return AcceptsResult::createYes();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		if ($this->getClassReflection() === null || !$reflectionProvider->hasClass($thatClass)) {
+			return AcceptsResult::createNo();
+		}
+
+		$thisReflection = $this->getClassReflection();
+		$thatReflection = $reflectionProvider->getClass($thatClass);
+
+		if ($thisReflection->getName() === $thatReflection->getName()) {
+			// class alias
+			return AcceptsResult::createYes();
+		}
+
+		if ($thisReflection->isInterface() && $thatReflection->isInterface()) {
+			return AcceptsResult::createFromBoolean(
+				$thatReflection->implementsInterface($thisReflection->getName()),
+			);
+		}
+
+		return AcceptsResult::createFromBoolean(
+			$thatReflection->isSubclassOf($thisReflection->getName()),
+		);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$preciseNameCallback = function (): string {
+			$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+			if (!$reflectionProvider->hasClass($this->className)) {
+				return $this->className;
+			}
+
+			return $reflectionProvider->getClassName($this->className);
+		};
+
+		$preciseWithSubtracted = function () use ($level): string {
+			$description = $this->className;
+			if ($this->subtractedType !== null) {
+				$description .= $this->subtractedType instanceof UnionType
+					? sprintf('~(%s)', $this->subtractedType->describe($level))
+					: sprintf('~%s', $this->subtractedType->describe($level));
+			}
+
+			return $description;
+		};
+
+		return $level->handle(
+			$preciseNameCallback,
+			$preciseNameCallback,
+			$preciseWithSubtracted,
+			function () use ($preciseWithSubtracted): string {
+				$reflection = $this->classReflection;
+				$line = '';
+				if ($reflection !== null) {
+					$line .= '-';
+					$line .= (string) $reflection->getNativeReflection()->getStartLine();
+					$line .= '-';
+				}
+
+				return $preciseWithSubtracted() . '-' . static::class . '-' . $line . $this->describeAdditionalCacheKey();
+			},
+		);
+	}
+
+	protected function describeAdditionalCacheKey(): string
+	{
+		return '';
+	}
+
+	private function describeCache(): string
+	{
+		if ($this->cachedDescription !== null) {
+			return $this->cachedDescription;
+		}
+
+		if (static::class !== self::class) {
+			return $this->cachedDescription = $this->describe(VerbosityLevel::cache());
+		}
+
+		$description = $this->className;
+
+		if ($this instanceof GenericObjectType) {
+			$description .= '<';
+			$typeDescriptions = [];
+			foreach ($this->getTypes() as $type) {
+				$typeDescriptions[] = $type->describe(VerbosityLevel::cache());
+			}
+			$description .= '<' . implode(', ', $typeDescriptions) . '>';
+		}
+
+		if ($this->subtractedType !== null) {
+			$description .= $this->subtractedType instanceof UnionType
+				? sprintf('~(%s)', $this->subtractedType->describe(VerbosityLevel::cache()))
+				: sprintf('~%s', $this->subtractedType->describe(VerbosityLevel::cache()));
+		}
+
+		$reflection = $this->classReflection;
+		if ($reflection !== null) {
+			$description .= '-';
+			$description .= (string) $reflection->getNativeReflection()->getStartLine();
+			$description .= '-';
+		}
+
+		return $this->cachedDescription = $description;
+	}
+
+	public function toNumber(): Type
+	{
+		if ($this->isInstanceOf('SimpleXMLElement')->yes()) {
+			return new UnionType([
+				new FloatType(),
+				new IntegerType(),
+			]);
+		}
+
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->toNumber()->toAbsoluteNumber();
+	}
+
+	public function toInteger(): Type
+	{
+		if ($this->isInstanceOf('SimpleXMLElement')->yes()) {
+			return new IntegerType();
+		}
+
+		if (in_array($this->getClassName(), ['CurlHandle', 'CurlMultiHandle'], true)) {
+			return new IntegerType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		if ($this->isInstanceOf('SimpleXMLElement')->yes()) {
+			return new FloatType();
+		}
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return new ErrorType();
+		}
+
+		if ($classReflection->hasNativeMethod('__toString')) {
+			return $this->getMethod('__toString', new OutOfClassScope())->getOnlyVariant()->getReturnType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return new ArrayType(new MixedType(), new MixedType());
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		if (
+			!$classReflection->getNativeReflection()->isUserDefined()
+			|| $classReflection->is(ArrayObject::class)
+			|| UniversalObjectCratesClassReflectionExtension::isUniversalObjectCrate(
+				$reflectionProvider,
+				$classReflection,
+			)
+		) {
+			return new ArrayType(new MixedType(), new MixedType());
+		}
+		$arrayKeys = [];
+		$arrayValues = [];
+
+		$isFinal = $classReflection->isFinal();
+
+		do {
+			foreach ($classReflection->getNativeReflection()->getProperties() as $nativeProperty) {
+				if ($nativeProperty->isStatic()) {
+					continue;
+				}
+
+				$declaringClass = $reflectionProvider->getClass($nativeProperty->getDeclaringClass()->getName());
+				$property = $declaringClass->getNativeProperty($nativeProperty->getName());
+
+				$keyName = $nativeProperty->getName();
+				if ($nativeProperty->isPrivate()) {
+					$keyName = sprintf(
+						"\0%s\0%s",
+						$declaringClass->getName(),
+						$keyName,
+					);
+				} elseif ($nativeProperty->isProtected()) {
+					$keyName = sprintf(
+						"\0*\0%s",
+						$keyName,
+					);
+				}
+
+				$arrayKeys[] = new ConstantStringType($keyName);
+				$arrayValues[] = $property->getReadableType();
+			}
+
+			$classReflection = $classReflection->getParentClass();
+		} while ($classReflection !== null);
+
+		if (!$isFinal && count($arrayKeys) === 0) {
+			return new ArrayType(new MixedType(), new MixedType());
+		}
+
+		return new ConstantArrayType($arrayKeys, $arrayValues);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this->toString();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		if ($this->isInstanceOf('SimpleXMLElement')->yes()) {
+			return new BooleanType();
+		}
+
+		return new ConstantBooleanType(true);
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createFromBoolean($classReflection->isEnum());
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		if (strtolower($this->className) === 'stdclass') {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		if ($classReflection->hasMethod($methodName)) {
+			return TrinaryLogic::createYes();
+		}
+
+		if ($classReflection->isFinal()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		if (!$scope->isInClass()) {
+			$canCallMethod = 'no';
+		} else {
+			$canCallMethod = $scope->getClassReflection()->getName();
+		}
+		$description = $this->describeCache();
+		if (isset(self::$methods[$description][$methodName][$canCallMethod])) {
+			return self::$methods[$description][$methodName][$canCallMethod];
+		}
+
+		$nakedClassReflection = $this->getNakedClassReflection();
+		if ($nakedClassReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		if (!$nakedClassReflection->hasNativeMethod($methodName)) {
+			$nakedClassReflection = $this->getClassReflection();
+		}
+
+		if ($nakedClassReflection === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		$method = $nakedClassReflection->getMethod($methodName, $scope);
+
+		$ancestor = $this->getAncestorWithClassName($method->getDeclaringClass()->getName());
+		$resolvedClassReflection = null;
+		if ($ancestor !== null) {
+			$resolvedClassReflection = $ancestor->getClassReflection();
+			if ($ancestor !== $this) {
+				$method = $ancestor->getUnresolvedMethodPrototype($methodName, $scope)->getNakedMethod();
+			}
+		}
+		if ($resolvedClassReflection === null) {
+			$resolvedClassReflection = $method->getDeclaringClass();
+		}
+
+		return self::$methods[$description][$methodName][$canCallMethod] = new CalledOnTypeUnresolvedMethodPrototypeReflection(
+			$method,
+			$resolvedClassReflection,
+			true,
+			$this,
+		);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		$class = $this->getClassReflection();
+		if ($class === null) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createFromBoolean(
+			$class->hasConstant($constantName),
+		);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		$class = $this->getClassReflection();
+		if ($class === null) {
+			throw new ClassNotFoundException($this->className);
+		}
+
+		return $class->getConstant($constantName);
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return new ErrorType();
+		}
+
+		$ancestorClassReflection = $classReflection->getAncestorWithClassName($ancestorClassName);
+		if ($ancestorClassReflection === null) {
+			return new ErrorType();
+		}
+
+		$activeTemplateTypeMap = $ancestorClassReflection->getPossiblyIncompleteActiveTemplateTypeMap();
+		$type = $activeTemplateTypeMap->getType($templateTypeName);
+		if ($type === null) {
+			return new ErrorType();
+		}
+		if ($type instanceof ErrorType) {
+			$templateTypeMap = $ancestorClassReflection->getTemplateTypeMap();
+			$templateType = $templateTypeMap->getType($templateTypeName);
+			if ($templateType === null) {
+				return $type;
+			}
+
+			$bound = TemplateTypeHelper::resolveToBounds($templateType);
+			if ($bound instanceof MixedType && $bound->isExplicitMixed()) {
+				return new MixedType(false);
+			}
+
+			return TemplateTypeHelper::resolveToDefaults($templateType);
+		}
+
+		return $type;
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return $this->isInstanceOf(Traversable::class);
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->isInstanceOf(Traversable::class)
+			->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getArraySize(): Type
+	{
+		if ($this->isInstanceOf(Countable::class)->no()) {
+			return new ErrorType();
+		}
+
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		$isTraversable = false;
+		if ($this->isInstanceOf(IteratorAggregate::class)->yes()) {
+			$keyType = RecursionGuard::run($this, fn (): Type => $this->getMethod('getIterator', new OutOfClassScope())->getOnlyVariant()->getReturnType()->getIterableKeyType());
+			$isTraversable = true;
+			if (!$keyType instanceof MixedType || $keyType->isExplicitMixed()) {
+				return $keyType;
+			}
+		}
+
+		$extraOffsetAccessible = $this->isExtraOffsetAccessibleClass()->yes();
+		if (!$extraOffsetAccessible && $this->isInstanceOf(Traversable::class)->yes()) {
+			$isTraversable = true;
+			$tKey = $this->getTemplateType(Traversable::class, 'TKey');
+			if (!$tKey instanceof ErrorType) {
+				if (!$tKey instanceof MixedType || $tKey->isExplicitMixed()) {
+					return $tKey;
+				}
+			}
+		}
+
+		if ($this->isInstanceOf(Iterator::class)->yes()) {
+			return RecursionGuard::run($this, fn (): Type => $this->getMethod('key', new OutOfClassScope())->getOnlyVariant()->getReturnType());
+		}
+
+		if ($extraOffsetAccessible) {
+			return new MixedType(true);
+		}
+
+		if ($isTraversable) {
+			return new MixedType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->getIterableKeyType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		$isTraversable = false;
+		if ($this->isInstanceOf(IteratorAggregate::class)->yes()) {
+			$valueType = RecursionGuard::run($this, fn (): Type => $this->getMethod('getIterator', new OutOfClassScope())->getOnlyVariant()->getReturnType()->getIterableValueType());
+			$isTraversable = true;
+			if (!$valueType instanceof MixedType || $valueType->isExplicitMixed()) {
+				return $valueType;
+			}
+		}
+
+		$extraOffsetAccessible = $this->isExtraOffsetAccessibleClass()->yes();
+		if (!$extraOffsetAccessible && $this->isInstanceOf(Traversable::class)->yes()) {
+			$isTraversable = true;
+			$tValue = $this->getTemplateType(Traversable::class, 'TValue');
+			if (!$tValue instanceof ErrorType) {
+				if (!$tValue instanceof MixedType || $tValue->isExplicitMixed()) {
+					return $tValue;
+				}
+			}
+		}
+
+		if ($this->isInstanceOf(Iterator::class)->yes()) {
+			return RecursionGuard::run($this, fn (): Type => $this->getMethod('current', new OutOfClassScope())->getOnlyVariant()->getReturnType());
+		}
+
+		if ($extraOffsetAccessible) {
+			return new MixedType(true);
+		}
+
+		if ($isTraversable) {
+			return new MixedType();
+		}
+
+		return new ErrorType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->getIterableValueType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->getIterableValueType();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this;
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isTrue()->yes()) {
+			return new ConstantBooleanType(true);
+		}
+
+		return $type->isFalse()->yes()
+			? new ConstantBooleanType(false)
+			: new BooleanType();
+	}
+
+	private function isExtraOffsetAccessibleClass(): TrinaryLogic
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		foreach (self::EXTRA_OFFSET_CLASSES as $extraOffsetClass) {
+			if ($classReflection->getName() === $extraOffsetClass) {
+				return TrinaryLogic::createYes();
+			}
+			if ($classReflection->isSubclassOf($extraOffsetClass)) {
+				return TrinaryLogic::createYes();
+			}
+		}
+
+		if ($classReflection->isInterface()) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		if ($classReflection->isFinal()) {
+			return TrinaryLogic::createNo();
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return $this->isInstanceOf(ArrayAccess::class)->or(
+			$this->isExtraOffsetAccessibleClass(),
+		);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return $this->isOffsetAccessible();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		if ($this->isInstanceOf(ArrayAccess::class)->yes()) {
+			$acceptedOffsetType = RecursionGuard::run($this, function (): Type {
+				$parameters = $this->getMethod('offsetSet', new OutOfClassScope())->getOnlyVariant()->getParameters();
+				if (count($parameters) < 2) {
+					throw new ShouldNotHappenException(sprintf(
+						'Method %s::%s() has less than 2 parameters.',
+						$this->className,
+						'offsetSet',
+					));
+				}
+
+				$offsetParameter = $parameters[0];
+
+				return $offsetParameter->getType();
+			});
+
+			if ($acceptedOffsetType->isSuperTypeOf($offsetType)->no()) {
+				return TrinaryLogic::createNo();
+			}
+
+			return TrinaryLogic::createMaybe();
+		}
+
+		return $this->isExtraOffsetAccessibleClass()
+			->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if (!$this->isExtraOffsetAccessibleClass()->no()) {
+			return new MixedType();
+		}
+
+		if ($this->isInstanceOf(ArrayAccess::class)->yes()) {
+			return RecursionGuard::run($this, fn (): Type => $this->getMethod('offsetGet', new OutOfClassScope())->getOnlyVariant()->getReturnType());
+		}
+
+		return new ErrorType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($this->isOffsetAccessible()->no()) {
+			return new ErrorType();
+		}
+
+		if ($this->isInstanceOf(ArrayAccess::class)->yes()) {
+			$acceptedValueType = new NeverType();
+			$acceptedOffsetType = RecursionGuard::run($this, function () use (&$acceptedValueType): Type {
+				$parameters = $this->getMethod('offsetSet', new OutOfClassScope())->getOnlyVariant()->getParameters();
+				if (count($parameters) < 2) {
+					throw new ShouldNotHappenException(sprintf(
+						'Method %s::%s() has less than 2 parameters.',
+						$this->className,
+						'offsetSet',
+					));
+				}
+
+				$offsetParameter = $parameters[0];
+				$acceptedValueType = $parameters[1]->getType();
+
+				return $offsetParameter->getType();
+			});
+
+			if ($offsetType === null) {
+				$offsetType = new NullType();
+			}
+
+			if (
+				(!$offsetType instanceof MixedType && !$acceptedOffsetType->isSuperTypeOf($offsetType)->yes())
+				|| (!$valueType instanceof MixedType && !$acceptedValueType->isSuperTypeOf($valueType)->yes())
+			) {
+				return new ErrorType();
+			}
+		}
+
+		// in the future we may return intersection of $this and OffsetAccessibleType()
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		if ($this->isOffsetAccessible()->no()) {
+			return new ErrorType();
+		}
+
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		if ($this->isOffsetAccessible()->no()) {
+			return new ErrorType();
+		}
+
+		return $this;
+	}
+
+	public function getEnumCases(): array
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return [];
+		}
+
+		if (!$classReflection->isEnum()) {
+			return [];
+		}
+
+		$cacheKey = $this->describeCache();
+		if (array_key_exists($cacheKey, self::$enumCases)) {
+			return self::$enumCases[$cacheKey];
+		}
+
+		$className = $classReflection->getName();
+
+		if ($this->subtractedType !== null) {
+			$subtractedEnumCaseNames = [];
+
+			foreach ($this->subtractedType->getEnumCases() as $subtractedCase) {
+				$subtractedEnumCaseNames[$subtractedCase->getEnumCaseName()] = true;
+			}
+
+			$cases = [];
+			foreach ($classReflection->getEnumCases() as $enumCase) {
+				if (array_key_exists($enumCase->getName(), $subtractedEnumCaseNames)) {
+					continue;
+				}
+				$cases[] = new EnumCaseObjectType($className, $enumCase->getName(), $classReflection);
+			}
+		} else {
+			$cases = [];
+			foreach ($classReflection->getEnumCases() as $enumCase) {
+				$cases[] = new EnumCaseObjectType($className, $enumCase->getName(), $classReflection);
+			}
+		}
+
+		return self::$enumCases[$cacheKey] = $cases;
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		$parametersAcceptors = RecursionGuard::run($this, fn () => $this->findCallableParametersAcceptors());
+		if ($parametersAcceptors === null) {
+			return TrinaryLogic::createNo();
+		}
+		if ($parametersAcceptors instanceof ErrorType) {
+			return TrinaryLogic::createNo();
+		}
+
+		if (
+			count($parametersAcceptors) === 1
+			&& $parametersAcceptors[0] instanceof TrivialParametersAcceptor
+		) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createYes();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		if ($this->className === Closure::class) {
+			return [new TrivialParametersAcceptor('Closure')];
+		}
+		$parametersAcceptors = $this->findCallableParametersAcceptors();
+		if ($parametersAcceptors === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $parametersAcceptors;
+	}
+
+	/**
+	 * @return CallableParametersAcceptor[]|null
+	 */
+	private function findCallableParametersAcceptors(): ?array
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return [new TrivialParametersAcceptor()];
+		}
+
+		if ($classReflection->hasNativeMethod('__invoke')) {
+			$method = $this->getMethod('__invoke', new OutOfClassScope());
+			return FunctionCallableVariant::createFromVariants(
+				$method,
+				$method->getVariants(),
+			);
+		}
+
+		if (!$classReflection->getNativeReflection()->isFinal()) {
+			return [new TrivialParametersAcceptor()];
+		}
+
+		return null;
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isInstanceOf(string $className): TrinaryLogic
+	{
+		$classReflection = $this->getClassReflection();
+		if ($classReflection === null) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		if ($classReflection->getName() === $className || $classReflection->isSubclassOf($className)) {
+			return TrinaryLogic::createYes();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if ($reflectionProvider->hasClass($className)) {
+			$thatClassReflection = $reflectionProvider->getClass($className);
+			if ($thatClassReflection->isFinal()) {
+				return TrinaryLogic::createNo();
+			}
+		}
+
+		if ($classReflection->isInterface()) {
+			return TrinaryLogic::createMaybe();
+		}
+
+		return TrinaryLogic::createNo();
+	}
+
+	public function subtract(Type $type): Type
+	{
+		if ($this->subtractedType !== null) {
+			$type = TypeCombinator::union($this->subtractedType, $type);
+		}
+
+		return $this->changeSubtractedType($type);
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		return $this->changeSubtractedType(null);
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		if ($subtractedType !== null) {
+			$classReflection = $this->getClassReflection();
+			$allowedSubTypes = $classReflection !== null ? $classReflection->getAllowedSubTypes() : null;
+			if ($allowedSubTypes !== null) {
+				$preciseVerbosity = VerbosityLevel::precise();
+
+				$originalAllowedSubTypes = $allowedSubTypes;
+				$subtractedSubTypes = [];
+
+				$subtractedTypes = TypeUtils::flattenTypes($subtractedType);
+				foreach ($subtractedTypes as $subType) {
+					foreach ($allowedSubTypes as $key => $allowedSubType) {
+						if ($subType->equals($allowedSubType)) {
+							$description = $allowedSubType->describe($preciseVerbosity);
+							$subtractedSubTypes[$description] = $subType;
+							unset($allowedSubTypes[$key]);
+							continue 2;
+						}
+					}
+
+					return new self($this->className, $subtractedType);
+				}
+
+				if (count($allowedSubTypes) === 1) {
+					return array_values($allowedSubTypes)[0];
+				}
+
+				$subtractedSubTypes = array_values($subtractedSubTypes);
+				$subtractedSubTypesCount = count($subtractedSubTypes);
+				if ($subtractedSubTypesCount === count($originalAllowedSubTypes)) {
+					return new NeverType();
+				}
+
+				if ($subtractedSubTypesCount === 0) {
+					return new self($this->className);
+				}
+
+				if ($subtractedSubTypesCount === 1) {
+					return new self($this->className, $subtractedSubTypes[0]);
+				}
+
+				return new self($this->className, new UnionType($subtractedSubTypes));
+			}
+		}
+
+		if ($this->subtractedType === null && $subtractedType === null) {
+			return $this;
+		}
+
+		return new self($this->className, $subtractedType);
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		return $this->subtractedType;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->subtractedType !== null ? $cb($this->subtractedType) : null;
+
+		if ($subtractedType !== $this->subtractedType) {
+			return new self(
+				$this->className,
+				$subtractedType,
+			);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->subtractedType === null) {
+			return $this;
+		}
+
+		return new self($this->className);
+	}
+
+	public function getNakedClassReflection(): ?ClassReflection
+	{
+		if ($this->classReflection !== null) {
+			return $this->classReflection;
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if (!$reflectionProvider->hasClass($this->className)) {
+			return null;
+		}
+
+		return $reflectionProvider->getClass($this->className);
+	}
+
+	public function getClassReflection(): ?ClassReflection
+	{
+		if ($this->classReflection !== null) {
+			return $this->classReflection;
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if (!$reflectionProvider->hasClass($this->className)) {
+			return null;
+		}
+
+		$classReflection = $reflectionProvider->getClass($this->className);
+		if ($classReflection->isGeneric()) {
+			return $classReflection->withTypes(array_values($classReflection->getTemplateTypeMap()->map(static fn (): Type => new ErrorType())->getTypes()));
+		}
+
+		return $classReflection;
+	}
+
+	public function getAncestorWithClassName(string $className): ?self
+	{
+		if ($this->className === $className) {
+			return $this;
+		}
+
+		if ($this->classReflection !== null && $className === $this->classReflection->getName()) {
+			return $this;
+		}
+
+		if (array_key_exists($className, $this->currentAncestors)) {
+			return $this->currentAncestors[$className];
+		}
+
+		$description = $this->describeCache();
+		if (
+			array_key_exists($description, self::$ancestors)
+			&& array_key_exists($className, self::$ancestors[$description])
+		) {
+			return self::$ancestors[$description][$className];
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if (!$reflectionProvider->hasClass($className)) {
+			return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = null;
+		}
+		$theirReflection = $reflectionProvider->getClass($className);
+
+		$thisReflection = $this->getClassReflection();
+		if ($thisReflection === null) {
+			return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = null;
+		}
+		if ($theirReflection->getName() === $thisReflection->getName()) {
+			return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = $this;
+		}
+
+		foreach ($this->getInterfaces() as $interface) {
+			$ancestor = $interface->getAncestorWithClassName($className);
+			if ($ancestor !== null) {
+				return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = $ancestor;
+			}
+		}
+
+		$parent = $this->getParent();
+		if ($parent !== null) {
+			$ancestor = $parent->getAncestorWithClassName($className);
+			if ($ancestor !== null) {
+				return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = $ancestor;
+			}
+		}
+
+		return self::$ancestors[$description][$className] = $this->currentAncestors[$className] = null;
+	}
+
+	private function getParent(): ?ObjectType
+	{
+		if ($this->cachedParent !== null) {
+			return $this->cachedParent;
+		}
+		$thisReflection = $this->getClassReflection();
+		if ($thisReflection === null) {
+			return null;
+		}
+
+		$parentReflection = $thisReflection->getParentClass();
+		if ($parentReflection === null) {
+			return null;
+		}
+
+		return $this->cachedParent = self::createFromReflection($parentReflection);
+	}
+
+	/** @return ObjectType[] */
+	private function getInterfaces(): array
+	{
+		if ($this->cachedInterfaces !== null) {
+			return $this->cachedInterfaces;
+		}
+		$thisReflection = $this->getClassReflection();
+		if ($thisReflection === null) {
+			return $this->cachedInterfaces = [];
+		}
+
+		return $this->cachedInterfaces = array_map(static fn (ClassReflection $interfaceReflection): self => self::createFromReflection($interfaceReflection), $thisReflection->getInterfaces());
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ObjectType) {
+			foreach (UnionType::EQUAL_UNION_CLASSES as $baseClass => $classes) {
+				if ($this->getClassName() !== $baseClass) {
+					continue;
+				}
+
+				foreach ($classes as $index => $class) {
+					if ($typeToRemove->getClassName() === $class) {
+						unset($classes[$index]);
+
+						return TypeCombinator::union(
+							...array_map(static fn (string $objectClass): Type => new ObjectType($objectClass), $classes),
+						);
+					}
+				}
+			}
+		}
+
+		if ($this->isSuperTypeOf($typeToRemove)->yes()) {
+			return $this->subtract($typeToRemove);
+		}
+
+		return null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return $this->getEnumCases();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		$object = new ObjectWithoutClassType();
+		if (!$exponent instanceof NeverType && !$object->isSuperTypeOf($this)->no() && !$object->isSuperTypeOf($exponent)->no()) {
+			return TypeCombinator::union($this, $exponent);
+		}
+		return new ErrorType();
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode($this->getClassName());
+	}
+
+}
diff --git a/src/Type/ObjectWithoutClassType.php b/src/Type/ObjectWithoutClassType.php
new file mode 100644
index 00000000..59649ddf
--- /dev/null
+++ b/src/Type/ObjectWithoutClassType.php
@@ -0,0 +1,226 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\ObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function sprintf;
+
+/** @api */
+class ObjectWithoutClassType implements SubtractableType
+{
+
+	use ObjectTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private ?Type $subtractedType;
+
+	/** @api */
+	public function __construct(
+		?Type $subtractedType = null,
+	)
+	{
+		if ($subtractedType instanceof NeverType) {
+			$subtractedType = null;
+		}
+
+		$this->subtractedType = $subtractedType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return AcceptsResult::createFromBoolean(
+			$type instanceof self || $type instanceof ObjectShapeType || $type->getObjectClassNames() !== [],
+		);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		if ($type instanceof self) {
+			if ($this->subtractedType === null) {
+				return IsSuperTypeOfResult::createYes();
+			}
+			if ($type->subtractedType !== null) {
+				$isSuperType = $type->subtractedType->isSuperTypeOf($this->subtractedType);
+				if ($isSuperType->yes()) {
+					return $isSuperType;
+				}
+			}
+
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof ObjectShapeType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type->getObjectClassNames() === []) {
+			return IsSuperTypeOfResult::createNo();
+		}
+
+		if ($this->subtractedType === null) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return $this->subtractedType->isSuperTypeOf($type)->negate();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof self) {
+			return false;
+		}
+
+		if ($this->subtractedType === null) {
+			if ($type->subtractedType === null) {
+				return true;
+			}
+
+			return false;
+		}
+
+		if ($type->subtractedType === null) {
+			return false;
+		}
+
+		return $this->subtractedType->equals($type->subtractedType);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn (): string => 'object',
+			static fn (): string => 'object',
+			function () use ($level): string {
+				$description = 'object';
+				if ($this->subtractedType !== null) {
+					$description .= $this->subtractedType instanceof UnionType
+						? sprintf('~(%s)', $this->subtractedType->describe($level))
+						: sprintf('~%s', $this->subtractedType->describe($level));
+				}
+
+				return $description;
+			},
+		);
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function subtract(Type $type): Type
+	{
+		if ($type instanceof self) {
+			return new NeverType();
+		}
+		if ($this->subtractedType !== null) {
+			$type = TypeCombinator::union($this->subtractedType, $type);
+		}
+
+		return new self($type);
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		return new self();
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		return new self($subtractedType);
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		return $this->subtractedType;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->subtractedType !== null ? $cb($this->subtractedType) : null;
+
+		if ($subtractedType !== $this->subtractedType) {
+			return new self($subtractedType);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->subtractedType === null) {
+			return $this;
+		}
+
+		return new self();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($this->isSuperTypeOf($typeToRemove)->yes()) {
+			return $this->subtract($typeToRemove);
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		if (!$exponent instanceof NeverType && !$this->isSuperTypeOf($exponent)->no()) {
+			return TypeCombinator::union($this, $exponent);
+		}
+
+		return new BenevolentUnionType([
+			new FloatType(),
+			new IntegerType(),
+		]);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('object');
+	}
+
+}
diff --git a/src/Type/OffsetAccessType.php b/src/Type/OffsetAccessType.php
new file mode 100644
index 00000000..75477b54
--- /dev/null
+++ b/src/Type/OffsetAccessType.php
@@ -0,0 +1,118 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\OffsetAccessTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\PhpDocParser\Printer\Printer;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function array_merge;
+
+/** @api */
+final class OffsetAccessType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(
+		private Type $type,
+		private Type $offset,
+	)
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return array_merge(
+			$this->type->getReferencedClasses(),
+			$this->offset->getReferencedClasses(),
+		);
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return array_merge(
+			$this->type->getReferencedTemplateTypes($positionVariance),
+			$this->offset->getReferencedTemplateTypes($positionVariance),
+		);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->type->equals($type->type)
+			&& $this->offset->equals($type->offset);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		$printer = new Printer();
+
+		return $printer->print($this->toPhpDocNode());
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->type)
+			&& !TypeUtils::containsTemplateType($this->offset);
+	}
+
+	protected function getResult(): Type
+	{
+		return $this->type->getOffsetValueType($this->offset);
+	}
+
+	/**
+	 * @param callable(Type): Type $cb
+	 */
+	public function traverse(callable $cb): Type
+	{
+		$type = $cb($this->type);
+		$offset = $cb($this->offset);
+
+		if ($this->type === $type && $this->offset === $offset) {
+			return $this;
+		}
+
+		return new self($type, $offset);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$type = $cb($this->type, $right->type);
+		$offset = $cb($this->offset, $right->offset);
+
+		if ($this->type === $type && $this->offset === $offset) {
+			return $this;
+		}
+
+		return new self($type, $offset);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new OffsetAccessTypeNode(
+			$this->type->toPhpDocNode(),
+			$this->offset->toPhpDocNode(),
+		);
+	}
+
+}
diff --git a/src/Type/OperatorTypeSpecifyingExtension.php b/src/Type/OperatorTypeSpecifyingExtension.php
new file mode 100644
index 00000000..fed0c749
--- /dev/null
+++ b/src/Type/OperatorTypeSpecifyingExtension.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/**
+ * This is the extension interface to implement if you want to describe
+ * how arithmetic operators like +, -, *, ^, / should infer types
+ * for PHP extensions that overload the behaviour, like GMP.
+ *
+ * To register it in the configuration file use the `phpstan.broker.operatorTypeSpecifyingExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.broker.operatorTypeSpecifyingExtension
+ * ```
+ *
+ * Learn more: https://github.com/phpstan/phpstan/pull/2114
+ *
+ * @api
+ */
+interface OperatorTypeSpecifyingExtension
+{
+
+	public function isOperatorSupported(string $operatorSigil, Type $leftSide, Type $rightSide): bool;
+
+	public function specifyType(string $operatorSigil, Type $leftSide, Type $rightSide): Type;
+
+}
diff --git a/src/Type/OperatorTypeSpecifyingExtensionRegistry.php b/src/Type/OperatorTypeSpecifyingExtensionRegistry.php
new file mode 100644
index 00000000..9a52ad41
--- /dev/null
+++ b/src/Type/OperatorTypeSpecifyingExtensionRegistry.php
@@ -0,0 +1,29 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use function array_filter;
+use function array_values;
+
+final class OperatorTypeSpecifyingExtensionRegistry
+{
+
+	/**
+	 * @param OperatorTypeSpecifyingExtension[] $extensions
+	 */
+	public function __construct(
+		private array $extensions,
+	)
+	{
+	}
+
+	/**
+	 * @return OperatorTypeSpecifyingExtension[]
+	 */
+	public function getOperatorTypeSpecifyingExtensions(string $operator, Type $leftType, Type $rightType): array
+	{
+		return array_values(array_filter($this->extensions, static fn (OperatorTypeSpecifyingExtension $extension): bool => $extension->isOperatorSupported($operator, $leftType, $rightType)));
+	}
+
+}
diff --git a/src/Type/ParserNodeTypeToPHPStanType.php b/src/Type/ParserNodeTypeToPHPStanType.php
new file mode 100644
index 00000000..eb3a5bca
--- /dev/null
+++ b/src/Type/ParserNodeTypeToPHPStanType.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+use PhpParser\Node\NullableType;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use function get_class;
+use function in_array;
+use function strtolower;
+
+final class ParserNodeTypeToPHPStanType
+{
+
+	/**
+	 * @param Node\Name|Node\Identifier|Node\ComplexType|null $type
+	 */
+	public static function resolve($type, ?ClassReflection $classReflection): Type
+	{
+		if ($type === null) {
+			return new MixedType();
+		} elseif ($type instanceof Name) {
+			$typeClassName = (string) $type;
+			$lowercasedClassName = strtolower($typeClassName);
+			if ($classReflection !== null && in_array($lowercasedClassName, ['self', 'static'], true)) {
+				if ($lowercasedClassName === 'static') {
+					return new StaticType($classReflection);
+				}
+				$typeClassName = $classReflection->getName();
+			} elseif (
+				$lowercasedClassName === 'parent'
+				&& $classReflection !== null
+				&& $classReflection->getParentClass() !== null
+			) {
+				$typeClassName = $classReflection->getParentClass()->getName();
+			}
+
+			return new ObjectType($typeClassName);
+		} elseif ($type instanceof NullableType) {
+			return TypeCombinator::addNull(self::resolve($type->type, $classReflection));
+		} elseif ($type instanceof Node\UnionType) {
+			$types = [];
+			foreach ($type->types as $unionTypeType) {
+				$types[] = self::resolve($unionTypeType, $classReflection);
+			}
+
+			return TypeCombinator::union(...$types);
+		} elseif ($type instanceof Node\IntersectionType) {
+			$types = [];
+			foreach ($type->types as $intersectionTypeType) {
+				$innerType = self::resolve($intersectionTypeType, $classReflection);
+				if (!$innerType->isObject()->yes()) {
+					return new NeverType();
+				}
+
+				$types[] = $innerType;
+			}
+
+			return TypeCombinator::intersect(...$types);
+		} elseif (!$type instanceof Identifier) {
+			throw new ShouldNotHappenException(get_class($type));
+		}
+
+		$type = $type->name;
+		if ($type === 'string') {
+			return new StringType();
+		} elseif ($type === 'int') {
+			return new IntegerType();
+		} elseif ($type === 'bool') {
+			return new BooleanType();
+		} elseif ($type === 'float') {
+			return new FloatType();
+		} elseif ($type === 'callable') {
+			return new CallableType();
+		} elseif ($type === 'array') {
+			return new ArrayType(new MixedType(), new MixedType());
+		} elseif ($type === 'iterable') {
+			return new IterableType(new MixedType(), new MixedType());
+		} elseif ($type === 'void') {
+			return new VoidType();
+		} elseif ($type === 'object') {
+			return new ObjectWithoutClassType();
+		} elseif ($type === 'true') {
+			return new ConstantBooleanType(true);
+		} elseif ($type === 'false') {
+			return new ConstantBooleanType(false);
+		} elseif ($type === 'null') {
+			return new NullType();
+		} elseif ($type === 'mixed') {
+			return new MixedType(true);
+		} elseif ($type === 'never') {
+			return new NonAcceptingNeverType();
+		}
+
+		return new MixedType();
+	}
+
+}
diff --git a/src/Type/Php/AbsFunctionDynamicReturnTypeExtension.php b/src/Type/Php/AbsFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..0e37620c
--- /dev/null
+++ b/src/Type/Php/AbsFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+final class AbsFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'abs';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+
+		if (!isset($args[0])) {
+			return null;
+		}
+
+		$inputType = $scope->getType($args[0]->value);
+
+		$outputType = $inputType->toAbsoluteNumber();
+
+		if ($outputType instanceof ErrorType) {
+			return null;
+		}
+
+		return $outputType;
+	}
+
+}
diff --git a/src/Type/Php/ArgumentBasedFunctionReturnTypeExtension.php b/src/Type/Php/ArgumentBasedFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..c7f7de1d
--- /dev/null
+++ b/src/Type/Php/ArgumentBasedFunctionReturnTypeExtension.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+
+final class ArgumentBasedFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const FUNCTION_NAMES = [
+		'array_unique' => 0,
+		'array_diff_assoc' => 0,
+		'array_diff_key' => 0,
+		'array_diff_uassoc' => 0,
+		'array_diff_ukey' => 0,
+		'array_diff' => 0,
+		'array_udiff_assoc' => 0,
+		'array_udiff_uassoc' => 0,
+		'array_udiff' => 0,
+		'array_intersect_assoc' => 0,
+		'array_intersect_uassoc' => 0,
+		'array_intersect_ukey' => 0,
+		'array_intersect' => 0,
+		'array_uintersect_assoc' => 0,
+		'array_uintersect_uassoc' => 0,
+		'array_uintersect' => 0,
+	];
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return array_key_exists($functionReflection->getName(), self::FUNCTION_NAMES);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$argumentPosition = self::FUNCTION_NAMES[$functionReflection->getName()];
+
+		if (!isset($functionCall->getArgs()[$argumentPosition])) {
+			return null;
+		}
+
+		$argument = $functionCall->getArgs()[$argumentPosition];
+		$argumentType = $scope->getType($argument->value);
+		$argumentKeyType = $argumentType->getIterableKeyType();
+		$argumentValueType = $argumentType->getIterableValueType();
+		if ($argument->unpack) {
+			$argumentKeyType = $argumentKeyType->generalize(GeneralizePrecision::moreSpecific());
+			$argumentValueType = $argumentValueType->getIterableValueType()->generalize(GeneralizePrecision::moreSpecific());
+		}
+
+		$array = new ArrayType(
+			$argumentKeyType,
+			$argumentValueType,
+		);
+		if ($functionReflection->getName() === 'array_unique' && $argumentType->isIterableAtLeastOnce()->yes()) {
+			$array = TypeCombinator::intersect($array, new NonEmptyArrayType());
+		}
+
+		return $array;
+	}
+
+}
diff --git a/src/Type/Php/ArrayChangeKeyCaseFunctionReturnTypeExtension.php b/src/Type/Php/ArrayChangeKeyCaseFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..04ba6514
--- /dev/null
+++ b/src/Type/Php/ArrayChangeKeyCaseFunctionReturnTypeExtension.php
@@ -0,0 +1,160 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function array_map;
+use function count;
+use function strtolower;
+use function strtoupper;
+use const CASE_LOWER;
+use const CASE_UPPER;
+
+final class ArrayChangeKeyCaseFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_change_key_case';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if (!isset($functionCall->getArgs()[1])) {
+			$case = CASE_LOWER;
+		} else {
+			$caseType = $scope->getType($functionCall->getArgs()[1]->value);
+			$scalarValues = $caseType->getConstantScalarValues();
+			if (count($scalarValues) === 1) {
+				$case = (int) $scalarValues[0];
+			} else {
+				$case = null;
+			}
+		}
+
+		$constantArrays = $arrayType->getConstantArrays();
+		if (count($constantArrays) > 0) {
+			$arrayTypes = [];
+			foreach ($constantArrays as $constantArray) {
+				$newConstantArrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+				$valueTypes = $constantArray->getValueTypes();
+				foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+					$valueType = $valueTypes[$i];
+
+					$constantStrings = $keyType->getConstantStrings();
+					if (count($constantStrings) > 0) {
+						$keyType = TypeCombinator::union(
+							...array_map(
+								fn (ConstantStringType $type): Type => $this->mapConstantString($type, $case),
+								$constantStrings,
+							),
+						);
+					}
+
+					$newConstantArrayBuilder->setOffsetValueType(
+						$keyType,
+						$valueType,
+						$constantArray->isOptionalKey($i),
+					);
+				}
+				$newConstantArrayType = $newConstantArrayBuilder->getArray();
+				if ($constantArray->isList()->yes()) {
+					$newConstantArrayType = TypeCombinator::intersect($newConstantArrayType, new AccessoryArrayListType());
+				}
+				$arrayTypes[] = $newConstantArrayType;
+			}
+
+			$newArrayType = TypeCombinator::union(...$arrayTypes);
+		} else {
+			$keysType = $arrayType->getIterableKeyType();
+
+			$keysType = TypeTraverser::map($keysType, function (Type $type, callable $traverse) use ($case): Type {
+				if ($type instanceof UnionType) {
+					return $traverse($type);
+				}
+
+				$constantStrings = $type->getConstantStrings();
+				if (count($constantStrings) > 0) {
+					return TypeCombinator::union(
+						...array_map(
+							fn (ConstantStringType $type): Type => $this->mapConstantString($type, $case),
+							$constantStrings,
+						),
+					);
+				}
+
+				if ($type->isString()->yes()) {
+					$types = [new StringType()];
+					if ($type->isNonFalsyString()->yes()) {
+						$types[] = new AccessoryNonFalsyStringType();
+					} elseif ($type->isNonEmptyString()->yes()) {
+						$types[] = new AccessoryNonEmptyStringType();
+					}
+					if ($type->isNumericString()->yes()) {
+						$types[] = new AccessoryNumericStringType();
+					}
+					if ($case === CASE_LOWER) {
+						$types[] = new AccessoryLowercaseStringType();
+					} elseif ($case === CASE_UPPER) {
+						$types[] = new AccessoryUppercaseStringType();
+					}
+
+					return TypeCombinator::intersect(...$types);
+				}
+
+				return $type;
+			});
+
+			$newArrayType = TypeCombinator::intersect(new ArrayType(
+				$keysType,
+				$arrayType->getIterableValueType(),
+			), ...TypeUtils::getAccessoryTypes($arrayType));
+		}
+
+		if ($arrayType->isIterableAtLeastOnce()->yes()) {
+			$newArrayType = TypeCombinator::intersect($newArrayType, new NonEmptyArrayType());
+		}
+
+		return $newArrayType;
+	}
+
+	private function mapConstantString(ConstantStringType $type, ?int $case): Type
+	{
+		if ($case === CASE_LOWER) {
+			return new ConstantStringType(strtolower($type->getValue()));
+		} elseif ($case === CASE_UPPER) {
+			return new ConstantStringType(strtoupper($type->getValue()));
+		}
+
+		return TypeCombinator::union(
+			new ConstantStringType(strtolower($type->getValue())),
+			new ConstantStringType(strtoupper($type->getValue())),
+		);
+	}
+
+}
diff --git a/src/Type/Php/ArrayChunkFunctionReturnTypeExtension.php b/src/Type/Php/ArrayChunkFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..0cb3b43b
--- /dev/null
+++ b/src/Type/Php/ArrayChunkFunctionReturnTypeExtension.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+
+final class ArrayChunkFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_chunk';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($arrayType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		$lengthType = $scope->getType($functionCall->getArgs()[1]->value);
+		$negativeOrZero = IntegerRangeType::fromInterval(null, 0);
+		if ($negativeOrZero->isSuperTypeOf($lengthType)->yes()) {
+			return $this->phpVersion->throwsValueErrorForInternalFunctions() ? new NeverType() : new NullType();
+		}
+
+		$preserveKeysType = isset($functionCall->getArgs()[2]) ? $scope->getType($functionCall->getArgs()[2]->value) : new ConstantBooleanType(false);
+
+		return $arrayType->chunkArray($lengthType, $preserveKeysType->isTrue());
+	}
+
+}
diff --git a/src/Type/Php/ArrayColumnFunctionReturnTypeExtension.php b/src/Type/Php/ArrayColumnFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..e59fbd1c
--- /dev/null
+++ b/src/Type/Php/ArrayColumnFunctionReturnTypeExtension.php
@@ -0,0 +1,213 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArrayColumnFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_column';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$numArgs = count($functionCall->getArgs());
+		if ($numArgs < 2) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		$columnType = $scope->getType($functionCall->getArgs()[1]->value);
+		$indexType = $numArgs >= 3 ? $scope->getType($functionCall->getArgs()[2]->value) : null;
+
+		$constantArrayTypes = $arrayType->getConstantArrays();
+		if (count($constantArrayTypes) === 1) {
+			$type = $this->handleConstantArray($constantArrayTypes[0], $columnType, $indexType, $scope);
+			if ($type !== null) {
+				return $type;
+			}
+		}
+
+		return $this->handleAnyArray($arrayType, $columnType, $indexType, $scope);
+	}
+
+	private function handleAnyArray(Type $arrayType, Type $columnType, ?Type $indexType, Scope $scope): Type
+	{
+		$iterableAtLeastOnce = $arrayType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new ConstantArrayType([], []);
+		}
+
+		$iterableValueType = $arrayType->getIterableValueType();
+		$returnValueType = $this->getOffsetOrProperty($iterableValueType, $columnType, $scope, false);
+
+		if ($returnValueType === null) {
+			$returnValueType = $this->getOffsetOrProperty($iterableValueType, $columnType, $scope, true);
+			$iterableAtLeastOnce = TrinaryLogic::createMaybe();
+			if ($returnValueType === null) {
+				throw new ShouldNotHappenException();
+			}
+		}
+
+		if ($returnValueType instanceof NeverType) {
+			return new ConstantArrayType([], []);
+		}
+
+		if ($indexType !== null) {
+			$type = $this->getOffsetOrProperty($iterableValueType, $indexType, $scope, false);
+			if ($type !== null) {
+				$returnKeyType = $type;
+			} else {
+				$type = $this->getOffsetOrProperty($iterableValueType, $indexType, $scope, true);
+				if ($type !== null) {
+					$returnKeyType = TypeCombinator::union($type, new IntegerType());
+				} else {
+					$returnKeyType = new IntegerType();
+				}
+			}
+		} else {
+			$returnKeyType = new IntegerType();
+		}
+
+		$returnType = new ArrayType($this->castToArrayKeyType($returnKeyType), $returnValueType);
+
+		if ($iterableAtLeastOnce->yes()) {
+			$returnType = TypeCombinator::intersect($returnType, new NonEmptyArrayType());
+		}
+		if ($indexType === null) {
+			$returnType = TypeCombinator::intersect($returnType, new AccessoryArrayListType());
+		}
+
+		return $returnType;
+	}
+
+	private function handleConstantArray(ConstantArrayType $arrayType, Type $columnType, ?Type $indexType, Scope $scope): ?Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		foreach ($arrayType->getValueTypes() as $i => $iterableValueType) {
+			$valueType = $this->getOffsetOrProperty($iterableValueType, $columnType, $scope, false);
+			if ($valueType === null) {
+				return null;
+			}
+			if ($valueType instanceof NeverType) {
+				continue;
+			}
+
+			if ($indexType !== null) {
+				$type = $this->getOffsetOrProperty($iterableValueType, $indexType, $scope, false);
+				if ($type !== null) {
+					$keyType = $type;
+				} else {
+					$type = $this->getOffsetOrProperty($iterableValueType, $indexType, $scope, true);
+					if ($type !== null) {
+						$keyType = TypeCombinator::union($type, new IntegerType());
+					} else {
+						$keyType = null;
+					}
+				}
+			} else {
+				$keyType = null;
+			}
+
+			if ($keyType !== null) {
+				$keyType = $this->castToArrayKeyType($keyType);
+			}
+			$builder->setOffsetValueType($keyType, $valueType, $arrayType->isOptionalKey($i));
+		}
+
+		return $builder->getArray();
+	}
+
+	private function getOffsetOrProperty(Type $type, Type $offsetOrProperty, Scope $scope, bool $allowMaybe): ?Type
+	{
+		$offsetIsNull = $offsetOrProperty->isNull();
+		if ($offsetIsNull->yes()) {
+			return $type;
+		}
+
+		$returnTypes = [];
+
+		if ($offsetIsNull->maybe()) {
+			$returnTypes[] = $type;
+		}
+
+		if (!$type->canAccessProperties()->no()) {
+			$propertyTypes = $offsetOrProperty->getConstantStrings();
+			if ($propertyTypes === []) {
+				return new MixedType();
+			}
+			foreach ($propertyTypes as $propertyType) {
+				$propertyName = $propertyType->getValue();
+				$hasProperty = $type->hasProperty($propertyName);
+				if ($hasProperty->maybe()) {
+					return $allowMaybe ? new MixedType() : null;
+				}
+				if (!$hasProperty->yes()) {
+					continue;
+				}
+
+				$returnTypes[] = $type->getProperty($propertyName, $scope)->getReadableType();
+			}
+		}
+
+		if ($type->isOffsetAccessible()->yes()) {
+			$hasOffset = $type->hasOffsetValueType($offsetOrProperty);
+			if (!$allowMaybe && $hasOffset->maybe()) {
+				return null;
+			}
+			if (!$hasOffset->no()) {
+				$returnTypes[] = $type->getOffsetValueType($offsetOrProperty);
+			}
+		}
+
+		if ($returnTypes === []) {
+			return new NeverType();
+		}
+
+		return TypeCombinator::union(...$returnTypes);
+	}
+
+	private function castToArrayKeyType(Type $type): Type
+	{
+		$isArray = $type->isArray();
+		if ($isArray->yes()) {
+			return $this->phpVersion->throwsTypeErrorForInternalFunctions() ? new NeverType() : new IntegerType();
+		}
+		if ($isArray->no()) {
+			return $type->toArrayKey();
+		}
+		$withoutArrayType = TypeCombinator::remove($type, new ArrayType(new MixedType(), new MixedType()));
+		$keyType = $withoutArrayType->toArrayKey();
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+			return $keyType;
+		}
+		return TypeCombinator::union($keyType, new IntegerType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayCombineFunctionReturnTypeExtension.php b/src/Type/Php/ArrayCombineFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..94565db6
--- /dev/null
+++ b/src/Type/Php/ArrayCombineFunctionReturnTypeExtension.php
@@ -0,0 +1,140 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class ArrayCombineFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_combine';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$firstArg = $functionCall->getArgs()[0]->value;
+		$secondArg = $functionCall->getArgs()[1]->value;
+
+		$keysParamType = $scope->getType($firstArg);
+		$valuesParamType = $scope->getType($secondArg);
+
+		if (
+			$keysParamType instanceof ConstantArrayType
+			&& $valuesParamType instanceof ConstantArrayType
+		) {
+			$keyTypes = $keysParamType->getValueTypes();
+			$valueTypes = $valuesParamType->getValueTypes();
+
+			if (count($keyTypes) !== count($valueTypes)) {
+				if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+					return new NeverType();
+				}
+				return new ConstantBooleanType(false);
+			}
+
+			$keyTypes = $this->sanitizeConstantArrayKeyTypes($keyTypes);
+			if ($keyTypes !== null) {
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+				foreach ($keyTypes as $i => $keyType) {
+					$valueType = $valueTypes[$i];
+					$builder->setOffsetValueType($keyType, $valueType);
+				}
+
+				return $builder->getArray();
+			}
+		}
+
+		if ($keysParamType->isArray()->yes()) {
+			$itemType = $keysParamType->getIterableValueType();
+
+			if ($itemType->isInteger()->no()) {
+				if ($itemType->toString() instanceof ErrorType) {
+					return new NeverType();
+				}
+
+				$keyType = $itemType->toString();
+			} else {
+				$keyType = $itemType;
+			}
+		} else {
+			$keyType = new MixedType();
+		}
+
+		$arrayType = new ArrayType(
+			$keyType,
+			$valuesParamType->isArray()->yes() ? $valuesParamType->getIterableValueType() : new MixedType(),
+		);
+
+		if ($keysParamType->isIterableAtLeastOnce()->yes() && $valuesParamType->isIterableAtLeastOnce()->yes()) {
+			$arrayType = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
+		}
+
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+			return $arrayType;
+		}
+
+		if ($firstArg instanceof Variable && $secondArg instanceof Variable && $firstArg->name === $secondArg->name) {
+			return $arrayType;
+		}
+
+		return new UnionType([$arrayType, new ConstantBooleanType(false)]);
+	}
+
+	/**
+	 * @param array<int, Type> $types
+	 *
+	 * @return array<int, ConstantIntegerType|ConstantStringType>|null
+	 */
+	private function sanitizeConstantArrayKeyTypes(array $types): ?array
+	{
+		$sanitizedTypes = [];
+
+		foreach ($types as $type) {
+			if ($type->isInteger()->no() && ! $type->toString() instanceof ErrorType) {
+				$type = $type->toString();
+			}
+
+			if (
+				!$type instanceof ConstantIntegerType
+				&& !$type instanceof ConstantStringType
+			) {
+				return null;
+			}
+
+			$sanitizedTypes[] = $type;
+		}
+
+		return $sanitizedTypes;
+	}
+
+}
diff --git a/src/Type/Php/ArrayCurrentDynamicReturnTypeExtension.php b/src/Type/Php/ArrayCurrentDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..2f6efc56
--- /dev/null
+++ b/src/Type/Php/ArrayCurrentDynamicReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayCurrentDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'current';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		$keyType = $argType->getIterableValueType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $keyType;
+		}
+
+		return TypeCombinator::union($keyType, new ConstantBooleanType(false));
+	}
+
+}
diff --git a/src/Type/Php/ArrayFillFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFillFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..936092ce
--- /dev/null
+++ b/src/Type/Php/ArrayFillFunctionReturnTypeExtension.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArrayFillFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const MAX_SIZE_USE_CONSTANT_ARRAY = 100;
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_fill';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 3) {
+			return null;
+		}
+
+		$numberType = $scope->getType($functionCall->getArgs()[1]->value);
+		$isValidNumberType = IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($numberType);
+
+		// check against negative-int, which is not allowed
+		if ($isValidNumberType->no()) {
+			if ($this->phpVersion->throwsValueErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+			return new ConstantBooleanType(false);
+		}
+
+		$startIndexType = $scope->getType($functionCall->getArgs()[0]->value);
+		$valueType = $scope->getType($functionCall->getArgs()[2]->value);
+
+		if (
+			$startIndexType instanceof ConstantIntegerType
+			&& $numberType instanceof ConstantIntegerType
+			&& $numberType->getValue() <= self::MAX_SIZE_USE_CONSTANT_ARRAY
+		) {
+			$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+			$nextIndex = $startIndexType->getValue();
+			for ($i = 0; $i < $numberType->getValue(); $i++) {
+				$arrayBuilder->setOffsetValueType(
+					new ConstantIntegerType($nextIndex),
+					$valueType,
+				);
+				if ($nextIndex < 0) {
+					$nextIndex = 0;
+				} else {
+					$nextIndex++;
+				}
+			}
+
+			return $arrayBuilder->getArray();
+		}
+
+		$resultType = new ArrayType(new IntegerType(), $valueType);
+		if ((new ConstantIntegerType(0))->isSuperTypeOf($startIndexType)->yes()) {
+			$resultType = TypeCombinator::intersect($resultType, new AccessoryArrayListType());
+		}
+		if (IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($numberType)->yes()) {
+			$resultType = TypeCombinator::intersect($resultType, new NonEmptyArrayType());
+		}
+
+		if (!$isValidNumberType->yes() && !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+			$resultType = TypeCombinator::union($resultType, new ConstantBooleanType(false));
+		}
+
+		return $resultType;
+	}
+
+}
diff --git a/src/Type/Php/ArrayFillKeysFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFillKeysFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..3cc2b8c6
--- /dev/null
+++ b/src/Type/Php/ArrayFillKeysFunctionReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+
+final class ArrayFillKeysFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_fill_keys';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$keysType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($keysType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		return $keysType->fillKeysArray($scope->getType($functionCall->getArgs()[1]->value));
+	}
+
+}
diff --git a/src/Type/Php/ArrayFilterFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFilterFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..56c3ad44
--- /dev/null
+++ b/src/Type/Php/ArrayFilterFunctionReturnTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+
+final class ArrayFilterFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private ArrayFilterFunctionReturnTypeHelper $arrayFilterFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_filter';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$arrayArg = $functionCall->getArgs()[0]->value ?? null;
+		$callbackArg = $functionCall->getArgs()[1]->value ?? null;
+		$flagArg = $functionCall->getArgs()[2]->value ?? null;
+
+		return $this->arrayFilterFunctionReturnTypeHelper->getType($scope, $arrayArg, $callbackArg, $flagArg);
+	}
+
+}
diff --git a/src/Type/Php/ArrayFilterFunctionReturnTypeHelper.php b/src/Type/Php/ArrayFilterFunctionReturnTypeHelper.php
new file mode 100644
index 00000000..ddec75ca
--- /dev/null
+++ b/src/Type/Php/ArrayFilterFunctionReturnTypeHelper.php
@@ -0,0 +1,341 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\ArrowFunction;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\Node\Expr\Error;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Return_;
+use PHPStan\Analyser\MutatingScope;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StaticTypeFactory;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_map;
+use function count;
+use function in_array;
+use function is_string;
+use function sprintf;
+use function substr;
+
+final class ArrayFilterFunctionReturnTypeHelper
+{
+
+	private const USE_BOTH = 1;
+	private const USE_KEY = 2;
+	private const USE_ITEM = 3;
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function getType(Scope $scope, ?Expr $arrayArg, ?Expr $callbackArg, ?Expr $flagArg): Type
+	{
+		if ($arrayArg === null) {
+			return new ArrayType(new MixedType(), new MixedType());
+		}
+
+		$arrayArgType = $scope->getType($arrayArg);
+		$arrayArgType = TypeUtils::toBenevolentUnion($arrayArgType);
+		$keyType = $arrayArgType->getIterableKeyType();
+		$itemType = $arrayArgType->getIterableValueType();
+
+		if ($itemType instanceof NeverType || $keyType instanceof NeverType) {
+			return new ConstantArrayType([], []);
+		}
+
+		if ($arrayArgType instanceof MixedType) {
+			return new BenevolentUnionType([
+				new ArrayType(new MixedType(), new MixedType()),
+				new NullType(),
+			]);
+		}
+
+		if ($callbackArg === null || $scope->getType($callbackArg)->isNull()->yes()) {
+			return TypeCombinator::union(
+				...array_map([$this, 'removeFalsey'], $arrayArgType->getArrays()),
+			);
+		}
+
+		$mode = $this->determineMode($flagArg, $scope);
+		if ($mode === null) {
+			return new ArrayType($keyType, $itemType);
+		}
+
+		if ($callbackArg instanceof Closure && count($callbackArg->stmts) === 1 && count($callbackArg->params) > 0) {
+			$statement = $callbackArg->stmts[0];
+			if ($statement instanceof Return_ && $statement->expr !== null) {
+				if ($mode === self::USE_ITEM) {
+					$keyVar = null;
+					$itemVar = $callbackArg->params[0]->var;
+				} elseif ($mode === self::USE_KEY) {
+					$keyVar = $callbackArg->params[0]->var;
+					$itemVar = null;
+				} elseif ($mode === self::USE_BOTH) {
+					$keyVar = $callbackArg->params[1]->var ?? null;
+					$itemVar = $callbackArg->params[0]->var;
+				}
+				return $this->filterByTruthyValue($scope, $itemVar, $arrayArgType, $keyVar, $statement->expr);
+			}
+		} elseif ($callbackArg instanceof ArrowFunction && count($callbackArg->params) > 0) {
+			if ($mode === self::USE_ITEM) {
+				$keyVar = null;
+				$itemVar = $callbackArg->params[0]->var;
+			} elseif ($mode === self::USE_KEY) {
+				$keyVar = $callbackArg->params[0]->var;
+				$itemVar = null;
+			} elseif ($mode === self::USE_BOTH) {
+				$keyVar = $callbackArg->params[1]->var ?? null;
+				$itemVar = $callbackArg->params[0]->var;
+			}
+			return $this->filterByTruthyValue($scope, $itemVar, $arrayArgType, $keyVar, $callbackArg->expr);
+		} elseif (
+			($callbackArg instanceof FuncCall || $callbackArg instanceof MethodCall || $callbackArg instanceof StaticCall)
+			&& $callbackArg->isFirstClassCallable()
+		) {
+			[$args, $itemVar, $keyVar] = $this->createDummyArgs($mode);
+			$expr = clone $callbackArg;
+			$expr->args = $args;
+			return $this->filterByTruthyValue($scope, $itemVar, $arrayArgType, $keyVar, $expr);
+		} else {
+			$constantStrings = $scope->getType($callbackArg)->getConstantStrings();
+			if (count($constantStrings) > 0) {
+				$results = [];
+				[$args, $itemVar, $keyVar] = $this->createDummyArgs($mode);
+
+				foreach ($constantStrings as $constantString) {
+					$funcName = self::createFunctionName($constantString->getValue());
+					if ($funcName === null) {
+						$results[] = new ErrorType();
+						continue;
+					}
+
+					$expr = new FuncCall($funcName, $args);
+					$results[] = $this->filterByTruthyValue($scope, $itemVar, $arrayArgType, $keyVar, $expr);
+				}
+				return TypeCombinator::union(...$results);
+			}
+		}
+
+		return new ArrayType($keyType, $itemType);
+	}
+
+	private function removeFalsey(Type $type): Type
+	{
+		$falseyTypes = StaticTypeFactory::falsey();
+
+		if (count($type->getConstantArrays()) > 0) {
+			$result = [];
+			foreach ($type->getConstantArrays() as $constantArray) {
+				$keys = $constantArray->getKeyTypes();
+				$values = $constantArray->getValueTypes();
+
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+
+				foreach ($values as $offset => $value) {
+					$isFalsey = $falseyTypes->isSuperTypeOf($value);
+
+					if ($isFalsey->maybe()) {
+						$builder->setOffsetValueType($keys[$offset], TypeCombinator::remove($value, $falseyTypes), true);
+					} elseif ($isFalsey->no()) {
+						$builder->setOffsetValueType($keys[$offset], $value, $constantArray->isOptionalKey($offset));
+					}
+				}
+
+				$result[] = $builder->getArray();
+			}
+
+			return TypeCombinator::union(...$result);
+		}
+
+		$keyType = $type->getIterableKeyType();
+		$valueType = $type->getIterableValueType();
+
+		$valueType = TypeCombinator::remove($valueType, $falseyTypes);
+
+		if ($valueType instanceof NeverType) {
+			return new ConstantArrayType([], []);
+		}
+
+		return new ArrayType($keyType, $valueType);
+	}
+
+	private function filterByTruthyValue(Scope $scope, Error|Variable|null $itemVar, Type $arrayType, Error|Variable|null $keyVar, Expr $expr): Type
+	{
+		if (!$scope instanceof MutatingScope) {
+			throw new ShouldNotHappenException();
+		}
+
+		$constantArrays = $arrayType->getConstantArrays();
+		if (count($constantArrays) > 0) {
+			$results = [];
+			foreach ($constantArrays as $constantArray) {
+				$builder = ConstantArrayTypeBuilder::createEmpty();
+				$optionalKeys = $constantArray->getOptionalKeys();
+				foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+					$itemType = $constantArray->getValueTypes()[$i];
+					[$newKeyType, $newItemType, $optional] = $this->processKeyAndItemType($scope, $keyType, $itemType, $itemVar, $keyVar, $expr);
+					$optional = $optional || in_array($i, $optionalKeys, true);
+					if ($newKeyType instanceof NeverType || $newItemType instanceof NeverType) {
+						continue;
+					}
+					if ($itemType->equals($newItemType) && $keyType->equals($newKeyType)) {
+						$builder->setOffsetValueType($keyType, $itemType, $optional);
+						continue;
+					}
+
+					$builder->setOffsetValueType($newKeyType, $newItemType, true);
+				}
+
+				$results[] = $builder->getArray();
+			}
+
+			return TypeCombinator::union(...$results);
+		}
+
+		[$newKeyType, $newItemType] = $this->processKeyAndItemType($scope, $arrayType->getIterableKeyType(), $arrayType->getIterableValueType(), $itemVar, $keyVar, $expr);
+
+		if ($newItemType instanceof NeverType || $newKeyType instanceof NeverType) {
+			return new ConstantArrayType([], []);
+		}
+
+		return new ArrayType($newKeyType, $newItemType);
+	}
+
+	/**
+	 * @return array{Type, Type, bool}
+	 */
+	private function processKeyAndItemType(MutatingScope $scope, Type $keyType, Type $itemType, Error|Variable|null $itemVar, Error|Variable|null $keyVar, Expr $expr): array
+	{
+		$itemVarName = null;
+		if ($itemVar !== null) {
+			if (!$itemVar instanceof Variable || !is_string($itemVar->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$itemVarName = $itemVar->name;
+			$scope = $scope->assignVariable($itemVarName, $itemType, new MixedType(), TrinaryLogic::createYes());
+		}
+
+		$keyVarName = null;
+		if ($keyVar !== null) {
+			if (!$keyVar instanceof Variable || !is_string($keyVar->name)) {
+				throw new ShouldNotHappenException();
+			}
+			$keyVarName = $keyVar->name;
+			$scope = $scope->assignVariable($keyVarName, $keyType, new MixedType(), TrinaryLogic::createYes());
+		}
+
+		$booleanResult = $scope->getType($expr)->toBoolean();
+		if ($booleanResult->isFalse()->yes()) {
+			return [new NeverType(), new NeverType(), false];
+		}
+
+		$scope = $scope->filterByTruthyValue($expr);
+
+		return [
+			$keyVarName !== null ? $scope->getVariableType($keyVarName) : $keyType,
+			$itemVarName !== null ? $scope->getVariableType($itemVarName) : $itemType,
+			!$booleanResult->isTrue()->yes(),
+		];
+	}
+
+	private static function createFunctionName(string $funcName): ?Name
+	{
+		if ($funcName === '') {
+			return null;
+		}
+
+		if ($funcName[0] === '\\') {
+			$funcName = substr($funcName, 1);
+
+			if ($funcName === '') {
+				return null;
+			}
+
+			return new Name\FullyQualified($funcName);
+		}
+
+		return new Name($funcName);
+	}
+
+	/**
+	 * @param self::USE_* $mode
+	 * @return array{list<Arg>, ?Variable, ?Variable}
+	 */
+	private function createDummyArgs(int $mode): array
+	{
+		if ($mode === self::USE_ITEM) {
+			$itemVar = new Variable('item');
+			$keyVar = null;
+			$args = [new Arg($itemVar)];
+		} elseif ($mode === self::USE_KEY) {
+			$itemVar = null;
+			$keyVar = new Variable('key');
+			$args = [new Arg($keyVar)];
+		} elseif ($mode === self::USE_BOTH) {
+			$itemVar = new Variable('item');
+			$keyVar = new Variable('key');
+			$args = [new Arg($itemVar), new Arg($keyVar)];
+		}
+		return [$args, $itemVar, $keyVar];
+	}
+
+	/**
+	 * @param non-empty-string $constantName
+	 */
+	private function getConstant(string $constantName): int
+	{
+		$constant = $this->reflectionProvider->getConstant(new Name($constantName), null);
+		$valueType = $constant->getValueType();
+		if (!$valueType instanceof ConstantIntegerType) {
+			throw new ShouldNotHappenException(sprintf('Constant %s does not have integer type.', $constantName));
+		}
+
+		return $valueType->getValue();
+	}
+
+	/**
+	 * @return self::USE_*|null
+	 */
+	private function determineMode(?Expr $flagArg, Scope $scope): ?int
+	{
+		if ($flagArg === null) {
+			return self::USE_ITEM;
+		}
+
+		$flagValues = $scope->getType($flagArg)->getConstantScalarValues();
+		if (count($flagValues) !== 1) {
+			return null;
+		}
+
+		if ($flagValues[0] === $this->getConstant('ARRAY_FILTER_USE_KEY')) {
+			return self::USE_KEY;
+		} elseif ($flagValues[0] === $this->getConstant('ARRAY_FILTER_USE_BOTH')) {
+			return self::USE_BOTH;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ArrayFindFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFindFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..74142348
--- /dev/null
+++ b/src/Type/Php/ArrayFindFunctionReturnTypeExtension.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function count;
+
+final class ArrayFindFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private ArrayFilterFunctionReturnTypeHelper $arrayFilterFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_find';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if (count($arrayType->getArrays()) < 1) {
+			return null;
+		}
+
+		$arrayArg = $functionCall->getArgs()[0]->value ?? null;
+		$callbackArg = $functionCall->getArgs()[1]->value ?? null;
+
+		$resultTypes = $this->arrayFilterFunctionReturnTypeHelper->getType($scope, $arrayArg, $callbackArg, null);
+		$resultType = TypeCombinator::union(...array_map(static fn ($type) => $type->getIterableValueType(), $resultTypes->getArrays()));
+
+		return $resultTypes->isIterableAtLeastOnce()->yes() ? $resultType : TypeCombinator::addNull($resultType);
+	}
+
+}
diff --git a/src/Type/Php/ArrayFindKeyFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFindKeyFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..74e8ec40
--- /dev/null
+++ b/src/Type/Php/ArrayFindKeyFunctionReturnTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArrayFindKeyFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_find_key';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if (count($arrayType->getArrays()) < 1) {
+			return null;
+		}
+
+		return TypeCombinator::union($arrayType->getIterableKeyType(), new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayFlipFunctionReturnTypeExtension.php b/src/Type/Php/ArrayFlipFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..496a9595
--- /dev/null
+++ b/src/Type/Php/ArrayFlipFunctionReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+
+final class ArrayFlipFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_flip';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) !== 1) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($arrayType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		return $arrayType->flipArray();
+	}
+
+}
diff --git a/src/Type/Php/ArrayIntersectKeyFunctionReturnTypeExtension.php b/src/Type/Php/ArrayIntersectKeyFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..8a522d89
--- /dev/null
+++ b/src/Type/Php/ArrayIntersectKeyFunctionReturnTypeExtension.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_slice;
+use function count;
+
+final class ArrayIntersectKeyFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_intersect_key';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 0) {
+			return null;
+		}
+
+		$argTypes = [];
+		foreach ($args as $arg) {
+			$argType = $scope->getType($arg->value);
+			if ($arg->unpack) {
+				$argTypes[] = $argType->getIterableValueType();
+				continue;
+			}
+
+			$argTypes[] = $argType;
+		}
+
+		$firstArrayType = $argTypes[0];
+		$otherArraysType = TypeCombinator::union(...array_slice($argTypes, 1));
+		$onlyOneArrayGiven = count($argTypes) === 1;
+
+		if ($firstArrayType->isArray()->no() || (!$onlyOneArrayGiven && $otherArraysType->isArray()->no())) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		if ($onlyOneArrayGiven) {
+			return $firstArrayType;
+		}
+
+		return $firstArrayType->intersectKeyArray($otherArraysType);
+	}
+
+}
diff --git a/src/Type/Php/ArrayKeyDynamicReturnTypeExtension.php b/src/Type/Php/ArrayKeyDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..d56274ac
--- /dev/null
+++ b/src/Type/Php/ArrayKeyDynamicReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayKeyDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'key';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new NullType();
+		}
+
+		$keyType = $argType->getIterableKeyType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $keyType;
+		}
+
+		return TypeCombinator::union($keyType, new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayKeyExistsFunctionTypeSpecifyingExtension.php b/src/Type/Php/ArrayKeyExistsFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..a71539b7
--- /dev/null
+++ b/src/Type/Php/ArrayKeyExistsFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,124 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\ArrayDimFetch;
+use PhpParser\Node\Expr\BinaryOp\Identical;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\HasOffsetType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class ArrayKeyExistsFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return in_array($functionReflection->getName(), ['array_key_exists', 'key_exists'], true)
+			&& !$context->null();
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		if (count($node->getArgs()) < 2) {
+			return new SpecifiedTypes();
+		}
+		$key = $node->getArgs()[0]->value;
+		$array = $node->getArgs()[1]->value;
+		$keyType = $scope->getType($key);
+		$arrayType = $scope->getType($array);
+
+		if (
+			!$keyType instanceof ConstantIntegerType
+			&& !$keyType instanceof ConstantStringType
+		) {
+			if ($context->true()) {
+				if ($arrayType->isIterableAtLeastOnce()->no()) {
+					return $this->typeSpecifier->create(
+						$array,
+						new NonEmptyArrayType(),
+						$context,
+						$scope,
+					);
+				}
+
+				$arrayKeyType = $arrayType->getIterableKeyType();
+				if ($keyType->isString()->yes()) {
+					$arrayKeyType = $arrayKeyType->toString();
+				} elseif ($keyType->isString()->maybe()) {
+					$arrayKeyType = TypeCombinator::union($arrayKeyType, $arrayKeyType->toString());
+				}
+
+				$specifiedTypes = $this->typeSpecifier->create(
+					$key,
+					$arrayKeyType,
+					$context,
+					$scope,
+				);
+
+				$arrayDimFetch = new ArrayDimFetch(
+					$array,
+					$key,
+				);
+
+				return $specifiedTypes->unionWith($this->typeSpecifier->create(
+					$arrayDimFetch,
+					$arrayType->getIterableValueType(),
+					$context,
+					$scope,
+				))->setRootExpr(new Identical($arrayDimFetch, new ConstFetch(new Name('__PHPSTAN_FAUX_CONSTANT'))));
+			}
+
+			return new SpecifiedTypes();
+		}
+
+		if ($context->true()) {
+			$type = TypeCombinator::intersect(
+				new ArrayType(new MixedType(), new MixedType()),
+				new HasOffsetType($keyType),
+			);
+		} else {
+			$type = new HasOffsetType($keyType);
+		}
+
+		return $this->typeSpecifier->create(
+			$array,
+			$type,
+			$context,
+			$scope,
+		);
+	}
+
+}
diff --git a/src/Type/Php/ArrayKeyFirstDynamicReturnTypeExtension.php b/src/Type/Php/ArrayKeyFirstDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..2a6c7440
--- /dev/null
+++ b/src/Type/Php/ArrayKeyFirstDynamicReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayKeyFirstDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_key_first';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new NullType();
+		}
+
+		$keyType = $argType->getFirstIterableKeyType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $keyType;
+		}
+
+		return TypeCombinator::union($keyType, new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayKeyLastDynamicReturnTypeExtension.php b/src/Type/Php/ArrayKeyLastDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..a2698097
--- /dev/null
+++ b/src/Type/Php/ArrayKeyLastDynamicReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayKeyLastDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_key_last';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new NullType();
+		}
+
+		$keyType = $argType->getLastIterableKeyType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $keyType;
+		}
+
+		return TypeCombinator::union($keyType, new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayKeysFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ArrayKeysFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..13d408f5
--- /dev/null
+++ b/src/Type/Php/ArrayKeysFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+use function strtolower;
+
+final class ArrayKeysFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'array_keys';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) !== 1) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($arrayType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		return $arrayType->getKeysArray();
+	}
+
+}
diff --git a/src/Type/Php/ArrayMapFunctionReturnTypeExtension.php b/src/Type/Php/ArrayMapFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..ea9851e1
--- /dev/null
+++ b/src/Type/Php/ArrayMapFunctionReturnTypeExtension.php
@@ -0,0 +1,185 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_map;
+use function array_reduce;
+use function array_slice;
+use function count;
+
+final class ArrayMapFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_map';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$numArgs = count($functionCall->getArgs());
+		if ($numArgs < 2) {
+			return null;
+		}
+
+		$singleArrayArgument = !isset($functionCall->getArgs()[2]);
+		$callableType = $scope->getType($functionCall->getArgs()[0]->value);
+		$callableIsNull = $callableType->isNull()->yes();
+
+		$callableParametersAcceptors = null;
+
+		if ($callableType->isCallable()->yes()) {
+			$callableParametersAcceptors = $callableType->getCallableParametersAcceptors($scope);
+			$valueType = ParametersAcceptorSelector::selectFromTypes(
+				array_map(
+					static fn (Node\Arg $arg) => $scope->getType($arg->value)->getIterableValueType(),
+					array_slice($functionCall->getArgs(), 1),
+				),
+				$callableParametersAcceptors,
+				false,
+			)->getReturnType();
+		} elseif ($callableIsNull) {
+			$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+			$argTypes = [];
+			$areAllSameSize = true;
+			$expectedSize = null;
+			foreach (array_slice($functionCall->getArgs(), 1) as $index => $arg) {
+				$argTypes[$index] = $argType = $scope->getType($arg->value);
+				if (!$areAllSameSize || $numArgs === 2) {
+					continue;
+				}
+
+				$arraySizes = $argType->getArraySize()->getConstantScalarValues();
+				if ($arraySizes === []) {
+					$areAllSameSize = false;
+					continue;
+				}
+
+				foreach ($arraySizes as $size) {
+					$expectedSize ??= $size;
+					if ($expectedSize === $size) {
+						continue;
+					}
+
+					$areAllSameSize = false;
+					continue 2;
+				}
+			}
+
+			if (!$areAllSameSize) {
+				$firstArr = $functionCall->getArgs()[1]->value;
+				$identities = [];
+				foreach (array_slice($functionCall->getArgs(), 2) as $arg) {
+					$identities[] = new Node\Expr\BinaryOp\Identical($firstArr, $arg->value);
+				}
+
+				$and = array_reduce(
+					$identities,
+					static fn (Node\Expr $a, Node\Expr $b) => new Node\Expr\BinaryOp\BooleanAnd($a, $b),
+					new Node\Expr\ConstFetch(new Node\Name('true')),
+				);
+				$areAllSameSize = $scope->getType($and)->isTrue()->yes();
+			}
+
+			$addNull = !$areAllSameSize;
+
+			foreach ($argTypes as $index => $argType) {
+				$offsetValueType = $argType->getIterableValueType();
+				if ($addNull) {
+					$offsetValueType = TypeCombinator::addNull($offsetValueType);
+				}
+
+				$arrayBuilder->setOffsetValueType(
+					new ConstantIntegerType($index),
+					$offsetValueType,
+				);
+			}
+			$valueType = $arrayBuilder->getArray();
+		} else {
+			$valueType = new MixedType();
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[1]->value);
+
+		if ($singleArrayArgument) {
+			if ($callableIsNull) {
+				return $arrayType;
+			}
+			$constantArrays = $arrayType->getConstantArrays();
+			if (count($constantArrays) > 0) {
+				$arrayTypes = [];
+				$totalCount = TypeCombinator::countConstantArrayValueTypes($constantArrays) * TypeCombinator::countConstantArrayValueTypes([$valueType]);
+				if ($totalCount < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+					foreach ($constantArrays as $constantArray) {
+						$returnedArrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+						$valueTypes = $constantArray->getValueTypes();
+						foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+							$returnedArrayBuilder->setOffsetValueType(
+								$keyType,
+								$callableParametersAcceptors !== null
+									? ParametersAcceptorSelector::selectFromTypes(
+										[$valueTypes[$i]],
+										$callableParametersAcceptors,
+										false,
+									)->getReturnType()
+									: $valueType,
+								$constantArray->isOptionalKey($i),
+							);
+						}
+						$returnedArray = $returnedArrayBuilder->getArray();
+						if ($constantArray->isList()->yes()) {
+							$returnedArray = TypeCombinator::intersect($returnedArray, new AccessoryArrayListType());
+						}
+						$arrayTypes[] = $returnedArray;
+					}
+
+					$mappedArrayType = TypeCombinator::union(...$arrayTypes);
+				} else {
+					$mappedArrayType = TypeCombinator::intersect(new ArrayType(
+						$arrayType->getIterableKeyType(),
+						$valueType,
+					), ...TypeUtils::getAccessoryTypes($arrayType));
+				}
+			} elseif ($arrayType->isArray()->yes()) {
+				$mappedArrayType = TypeCombinator::intersect(new ArrayType(
+					$arrayType->getIterableKeyType(),
+					$valueType,
+				), ...TypeUtils::getAccessoryTypes($arrayType));
+			} else {
+				$mappedArrayType = new ArrayType(
+					new MixedType(),
+					$valueType,
+				);
+			}
+		} else {
+			$mappedArrayType = TypeCombinator::intersect(new ArrayType(
+				new IntegerType(),
+				$valueType,
+			), new AccessoryArrayListType(), ...TypeUtils::getAccessoryTypes($arrayType));
+		}
+
+		if ($arrayType->isIterableAtLeastOnce()->yes()) {
+			$mappedArrayType = TypeCombinator::intersect($mappedArrayType, new NonEmptyArrayType());
+		}
+
+		return $mappedArrayType;
+	}
+
+}
diff --git a/src/Type/Php/ArrayMergeFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ArrayMergeFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..4e5981a8
--- /dev/null
+++ b/src/Type/Php/ArrayMergeFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,138 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_keys;
+use function count;
+use function in_array;
+
+final class ArrayMergeFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_merge';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+
+		if (!isset($args[0])) {
+			return null;
+		}
+
+		$argTypes = [];
+		$optionalArgTypes = [];
+		foreach ($args as $arg) {
+			$argType = $scope->getType($arg->value);
+
+			if ($arg->unpack) {
+				if ($argType->isConstantArray()->yes()) {
+					foreach ($argType->getConstantArrays() as $constantArray) {
+						foreach ($constantArray->getValueTypes() as $valueType) {
+							$argTypes[] = $valueType;
+						}
+					}
+				} else {
+					$argTypes[] = $argType->getIterableValueType();
+				}
+
+				if (!$argType->isIterableAtLeastOnce()->yes()) {
+					// unpacked params can be empty, making them optional
+					$optionalArgTypesOffset = count($argTypes) - 1;
+					foreach (array_keys($argTypes) as $key) {
+						$optionalArgTypes[] = $optionalArgTypesOffset + $key;
+					}
+				}
+			} else {
+				$argTypes[] = $argType;
+			}
+		}
+
+		$allConstant = TrinaryLogic::createYes()->lazyAnd(
+			$argTypes,
+			static fn (Type $argType) => $argType->isConstantArray(),
+		);
+
+		if ($allConstant->yes()) {
+			$newArrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+			foreach ($argTypes as $argType) {
+				/** @var array<int|string, ConstantIntegerType|ConstantStringType> $keyTypes */
+				$keyTypes = [];
+				foreach ($argType->getConstantArrays() as $constantArray) {
+					foreach ($constantArray->getKeyTypes() as $keyType) {
+						$keyTypes[$keyType->getValue()] = $keyType;
+					}
+				}
+
+				foreach ($keyTypes as $keyType) {
+					$newArrayBuilder->setOffsetValueType(
+						$keyType instanceof ConstantIntegerType ? null : $keyType,
+						$argType->getOffsetValueType($keyType),
+						!$argType->hasOffsetValueType($keyType)->yes(),
+					);
+				}
+			}
+
+			return $newArrayBuilder->getArray();
+		}
+
+		$keyTypes = [];
+		$valueTypes = [];
+		$nonEmpty = false;
+		$isList = true;
+		foreach ($argTypes as $key => $argType) {
+			$keyType = $argType->getIterableKeyType();
+			$keyTypes[] = $keyType;
+			$valueTypes[] = $argType->getIterableValueType();
+
+			if (!(new IntegerType())->isSuperTypeOf($keyType)->yes()) {
+				$isList = false;
+			}
+
+			if (in_array($key, $optionalArgTypes, true) || !$argType->isIterableAtLeastOnce()->yes()) {
+				continue;
+			}
+
+			$nonEmpty = true;
+		}
+
+		$keyType = TypeCombinator::union(...$keyTypes);
+		if ($keyType instanceof NeverType) {
+			return new ConstantArrayType([], []);
+		}
+
+		$arrayType = new ArrayType(
+			$keyType,
+			TypeCombinator::union(...$valueTypes),
+		);
+
+		if ($nonEmpty) {
+			$arrayType = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
+		}
+		if ($isList) {
+			$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+		}
+
+		return $arrayType;
+	}
+
+}
diff --git a/src/Type/Php/ArrayNextDynamicReturnTypeExtension.php b/src/Type/Php/ArrayNextDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..1f1212d7
--- /dev/null
+++ b/src/Type/Php/ArrayNextDynamicReturnTypeExtension.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function in_array;
+
+final class ArrayNextDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['next', 'prev'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		$valueType = $argType->getIterableValueType();
+
+		return TypeCombinator::union($valueType, new ConstantBooleanType(false));
+	}
+
+}
diff --git a/src/Type/Php/ArrayPointerFunctionsDynamicReturnTypeExtension.php b/src/Type/Php/ArrayPointerFunctionsDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..7c5e685a
--- /dev/null
+++ b/src/Type/Php/ArrayPointerFunctionsDynamicReturnTypeExtension.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class ArrayPointerFunctionsDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	/** @var string[] */
+	private array $functions = [
+		'reset',
+		'end',
+	];
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), $this->functions, true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		$itemType = $functionReflection->getName() === 'reset'
+			? $argType->getFirstIterableValueType()
+			: $argType->getLastIterableValueType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $itemType;
+		}
+
+		return TypeCombinator::union($itemType, new ConstantBooleanType(false));
+	}
+
+}
diff --git a/src/Type/Php/ArrayPopFunctionReturnTypeExtension.php b/src/Type/Php/ArrayPopFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..6263b462
--- /dev/null
+++ b/src/Type/Php/ArrayPopFunctionReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayPopFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_pop';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new NullType();
+		}
+
+		$itemType = $argType->getLastIterableValueType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $itemType;
+		}
+
+		return TypeCombinator::union($itemType, new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArrayRandFunctionReturnTypeExtension.php b/src/Type/Php/ArrayRandFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..dc3c8117
--- /dev/null
+++ b/src/Type/Php/ArrayRandFunctionReturnTypeExtension.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class ArrayRandFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_rand';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$argsCount = count($functionCall->getArgs());
+		if ($argsCount < 1) {
+			return null;
+		}
+
+		$firstArgType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isInteger = $firstArgType->getIterableKeyType()->isInteger();
+		$isString = $firstArgType->getIterableKeyType()->isString();
+
+		if ($isInteger->yes()) {
+			$valueType = new IntegerType();
+		} elseif ($isString->yes()) {
+			$valueType = new StringType();
+		} else {
+			$valueType = new UnionType([new IntegerType(), new StringType()]);
+		}
+
+		if ($argsCount < 2) {
+			return $valueType;
+		}
+
+		$secondArgType = $scope->getType($functionCall->getArgs()[1]->value);
+
+		$one = new ConstantIntegerType(1);
+		if ($one->isSuperTypeOf($secondArgType)->yes()) {
+			return $valueType;
+		}
+
+		$bigger2 = IntegerRangeType::fromInterval(2, null);
+		if ($bigger2->isSuperTypeOf($secondArgType)->yes()) {
+			return new ArrayType(new IntegerType(), $valueType);
+		}
+
+		return TypeCombinator::union($valueType, new ArrayType(new IntegerType(), $valueType));
+	}
+
+}
diff --git a/src/Type/Php/ArrayReduceFunctionReturnTypeExtension.php b/src/Type/Php/ArrayReduceFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..4d19e8c0
--- /dev/null
+++ b/src/Type/Php/ArrayReduceFunctionReturnTypeExtension.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArrayReduceFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_reduce';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[1])) {
+			return null;
+		}
+
+		$callbackType = $scope->getType($functionCall->getArgs()[1]->value);
+		if ($callbackType->isCallable()->no()) {
+			return null;
+		}
+
+		$callbackReturnType = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$callbackType->getCallableParametersAcceptors($scope),
+		)->getReturnType();
+
+		if (isset($functionCall->getArgs()[2])) {
+			$initialType = $scope->getType($functionCall->getArgs()[2]->value);
+		} else {
+			$initialType = new NullType();
+		}
+
+		$arraysType = $scope->getType($functionCall->getArgs()[0]->value);
+		$constantArrays = $arraysType->getConstantArrays();
+		if (count($constantArrays) > 0) {
+			$onlyEmpty = TrinaryLogic::createYes();
+			$onlyNonEmpty = TrinaryLogic::createYes();
+			foreach ($constantArrays as $constantArray) {
+				$iterableAtLeastOnce = $constantArray->isIterableAtLeastOnce();
+				$onlyEmpty = $onlyEmpty->and($iterableAtLeastOnce->negate());
+				$onlyNonEmpty = $onlyNonEmpty->and($iterableAtLeastOnce);
+			}
+
+			if ($onlyEmpty->yes()) {
+				return $initialType;
+			}
+			if ($onlyNonEmpty->yes()) {
+				return $callbackReturnType;
+			}
+		}
+
+		return TypeCombinator::union($callbackReturnType, $initialType);
+	}
+
+}
diff --git a/src/Type/Php/ArrayReplaceFunctionReturnTypeExtension.php b/src/Type/Php/ArrayReplaceFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..243e743d
--- /dev/null
+++ b/src/Type/Php/ArrayReplaceFunctionReturnTypeExtension.php
@@ -0,0 +1,77 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function strtolower;
+
+final class ArrayReplaceFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'array_replace';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$arrayTypes = $this->collectArrayTypes($functionCall, $scope);
+
+		if (count($arrayTypes) === 0) {
+			return null;
+		}
+
+		return $this->getResultType(...$arrayTypes);
+	}
+
+	private function getResultType(Type ...$arrayTypes): Type
+	{
+		$keyTypes = [];
+		$valueTypes = [];
+		$nonEmptyArray = false;
+		foreach ($arrayTypes as $arrayType) {
+			if (!$nonEmptyArray && $arrayType->isIterableAtLeastOnce()->yes()) {
+				$nonEmptyArray = true;
+			}
+
+			$keyTypes[] = $arrayType->getIterableKeyType();
+			$valueTypes[] = $arrayType->getIterableValueType();
+		}
+
+		$keyType = TypeCombinator::union(...$keyTypes);
+		$valueType = TypeCombinator::union(...$valueTypes);
+
+		$arrayType = new ArrayType($keyType, $valueType);
+		return $nonEmptyArray ? TypeCombinator::intersect($arrayType, new NonEmptyArrayType()) : $arrayType;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	private function collectArrayTypes(FuncCall $functionCall, Scope $scope): array
+	{
+		$args = $functionCall->getArgs();
+
+		$arrayTypes = [];
+		foreach ($args as $arg) {
+			$argType = $scope->getType($arg->value);
+			if (!$argType->isArray()->yes()) {
+				continue;
+			}
+
+			$arrayTypes[] = $arg->unpack ? $argType->getIterableValueType() : $argType;
+		}
+
+		return $arrayTypes;
+	}
+
+}
diff --git a/src/Type/Php/ArrayReverseFunctionReturnTypeExtension.php b/src/Type/Php/ArrayReverseFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..2d9a4699
--- /dev/null
+++ b/src/Type/Php/ArrayReverseFunctionReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+
+final class ArrayReverseFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_reverse';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$type = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($type->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		$preserveKeysType = isset($functionCall->getArgs()[1]) ? $scope->getType($functionCall->getArgs()[1]->value) : new ConstantBooleanType(false);
+
+		return $type->reverseArray($preserveKeysType->isTrue());
+	}
+
+}
diff --git a/src/Type/Php/ArraySearchFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ArraySearchFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..5cbc6be3
--- /dev/null
+++ b/src/Type/Php/ArraySearchFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArraySearchFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_search';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$argsCount = count($functionCall->getArgs());
+		if ($argsCount < 2) {
+			return null;
+		}
+
+		$haystackArgType = $scope->getType($functionCall->getArgs()[1]->value);
+		if ($haystackArgType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		if ($argsCount < 3) {
+			return TypeCombinator::union($haystackArgType->getIterableKeyType(), new ConstantBooleanType(false));
+		}
+
+		$strictArgType = $scope->getType($functionCall->getArgs()[2]->value);
+		if (!$strictArgType->isTrue()->yes()) {
+			return TypeCombinator::union($haystackArgType->getIterableKeyType(), new ConstantBooleanType(false));
+		}
+
+		$needleArgType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($haystackArgType->getIterableValueType()->isSuperTypeOf($needleArgType)->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return $haystackArgType->searchArray($needleArgType);
+	}
+
+}
diff --git a/src/Type/Php/ArraySearchFunctionTypeSpecifyingExtension.php b/src/Type/Php/ArraySearchFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..7a71f600
--- /dev/null
+++ b/src/Type/Php/ArraySearchFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function strtolower;
+
+final class ArraySearchFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return strtolower($functionReflection->getName()) === 'array_search'
+			&& $context->true();
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		$arrayArg = $node->getArgs()[1]->value ?? null;
+		if ($arrayArg === null) {
+			return new SpecifiedTypes();
+		}
+
+		return $this->typeSpecifier->create(
+			$arrayArg,
+			new NonEmptyArrayType(),
+			$context,
+			$scope,
+		);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/ArrayShiftFunctionReturnTypeExtension.php b/src/Type/Php/ArrayShiftFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..b3dfa144
--- /dev/null
+++ b/src/Type/Php/ArrayShiftFunctionReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ArrayShiftFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_shift';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$iterableAtLeastOnce = $argType->isIterableAtLeastOnce();
+		if ($iterableAtLeastOnce->no()) {
+			return new NullType();
+		}
+
+		$itemType = $argType->getFirstIterableValueType();
+		if ($iterableAtLeastOnce->yes()) {
+			return $itemType;
+		}
+
+		return TypeCombinator::union($itemType, new NullType());
+	}
+
+}
diff --git a/src/Type/Php/ArraySliceFunctionReturnTypeExtension.php b/src/Type/Php/ArraySliceFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..74c9e38a
--- /dev/null
+++ b/src/Type/Php/ArraySliceFunctionReturnTypeExtension.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+
+final class ArraySliceFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_slice';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($args[0]->value);
+		if ($arrayType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		$offsetType = $scope->getType($args[1]->value);
+		$lengthType = isset($args[2]) ? $scope->getType($args[2]->value) : new NullType();
+		$preserveKeysType = isset($args[3]) ? $scope->getType($args[3]->value) : new ConstantBooleanType(false);
+
+		return $arrayType->sliceArray($offsetType, $lengthType, $preserveKeysType->isTrue());
+	}
+
+}
diff --git a/src/Type/Php/ArraySpliceFunctionReturnTypeExtension.php b/src/Type/Php/ArraySpliceFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..3118d0fa
--- /dev/null
+++ b/src/Type/Php/ArraySpliceFunctionReturnTypeExtension.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+
+final class ArraySpliceFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_splice';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$arrayArg = $scope->getType($functionCall->getArgs()[0]->value);
+
+		return new ArrayType($arrayArg->getIterableKeyType(), $arrayArg->getIterableValueType());
+	}
+
+}
diff --git a/src/Type/Php/ArraySumFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ArraySumFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..b1ea1924
--- /dev/null
+++ b/src/Type/Php/ArraySumFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\BinaryOp\Mul;
+use PhpParser\Node\Expr\BinaryOp\Plus;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Scalar\Int_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Node\Expr\TypeExpr;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ArraySumFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'array_sum';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$resultTypes = [];
+
+		if (count($argType->getConstantArrays()) > 0) {
+			foreach ($argType->getConstantArrays() as $constantArray) {
+				$node = new Int_(0);
+
+				foreach ($constantArray->getValueTypes() as $i => $type) {
+					if ($constantArray->isOptionalKey($i)) {
+						$node = new Plus($node, new TypeExpr(TypeCombinator::union($type, new ConstantIntegerType(0))));
+					} else {
+						$node = new Plus($node, new TypeExpr($type));
+					}
+				}
+
+				$resultTypes[] = $scope->getType($node);
+			}
+		} else {
+			$itemType = $argType->getIterableValueType();
+
+			$mulNode = new Mul(new TypeExpr($itemType), new TypeExpr(IntegerRangeType::fromInterval(0, null)));
+
+			$resultTypes[] = $scope->getType(new Plus(new TypeExpr($itemType), $mulNode));
+		}
+
+		if (!$argType->isIterableAtLeastOnce()->yes()) {
+			$resultTypes[] = new ConstantIntegerType(0);
+		}
+
+		return TypeCombinator::union(...$resultTypes)->toNumber();
+	}
+
+}
diff --git a/src/Type/Php/ArrayValuesFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ArrayValuesFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..311f0d29
--- /dev/null
+++ b/src/Type/Php/ArrayValuesFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+use function strtolower;
+
+final class ArrayValuesFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'array_values';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) !== 1) {
+			return null;
+		}
+
+		$arrayType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($arrayType->isArray()->no()) {
+			return $this->phpVersion->arrayFunctionsReturnNullWithNonArray() ? new NullType() : new NeverType();
+		}
+
+		return $arrayType->getValuesArray();
+	}
+
+}
diff --git a/src/Type/Php/AssertFunctionTypeSpecifyingExtension.php b/src/Type/Php/AssertFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..b6853b89
--- /dev/null
+++ b/src/Type/Php/AssertFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,36 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+
+final class AssertFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return $functionReflection->getName() === 'assert'
+			&& isset($node->getArgs()[0]);
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		return $this->typeSpecifier->specifyTypesInCondition($scope, $node->getArgs()[0]->value, TypeSpecifierContext::createTruthy());
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/AssertThrowTypeExtension.php b/src/Type/Php/AssertThrowTypeExtension.php
new file mode 100644
index 00000000..2e3c7820
--- /dev/null
+++ b/src/Type/Php/AssertThrowTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionThrowTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use Throwable;
+use function count;
+
+final class AssertThrowTypeExtension implements DynamicFunctionThrowTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'assert';
+	}
+
+	public function getThrowTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, Scope $scope): ?Type
+	{
+		if (count($funcCall->getArgs()) < 2) {
+			return $functionReflection->getThrowType();
+		}
+
+		$customThrow = $scope->getType($funcCall->getArgs()[1]->value);
+		if ((new ObjectType(Throwable::class))->isSuperTypeOf($customThrow)->yes()) {
+			return $customThrow;
+		}
+
+		return $functionReflection->getThrowType();
+	}
+
+}
diff --git a/src/Type/Php/BackedEnumFromMethodDynamicReturnTypeExtension.php b/src/Type/Php/BackedEnumFromMethodDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..8a2352fe
--- /dev/null
+++ b/src/Type/Php/BackedEnumFromMethodDynamicReturnTypeExtension.php
@@ -0,0 +1,101 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use BackedEnum;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class BackedEnumFromMethodDynamicReturnTypeExtension implements DynamicStaticMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return BackedEnum::class;
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return in_array($methodReflection->getName(), ['from', 'tryFrom'], true);
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (!$methodReflection->getDeclaringClass()->isBackedEnum()) {
+			return null;
+		}
+
+		$arguments = $methodCall->getArgs();
+		if (count($arguments) < 1) {
+			return null;
+		}
+
+		$valueType = $scope->getType($arguments[0]->value);
+
+		$enumCases = $methodReflection->getDeclaringClass()->getEnumCases();
+		if (count($enumCases) === 0) {
+			if ($methodReflection->getName() === 'tryFrom') {
+				return new NullType();
+			}
+
+			return null;
+		}
+
+		if (count($valueType->getConstantScalarValues()) === 0) {
+			return null;
+		}
+
+		$resultEnumCases = [];
+		$addNull = false;
+		foreach ($valueType->getConstantScalarValues() as $value) {
+			$hasMatching = false;
+			foreach ($enumCases as $enumCase) {
+				if ($enumCase->getBackingValueType() === null) {
+					continue;
+				}
+
+				$enumCaseValues = $enumCase->getBackingValueType()->getConstantScalarValues();
+				if (count($enumCaseValues) !== 1) {
+					continue;
+				}
+
+				if ($value === $enumCaseValues[0]) {
+					$resultEnumCases[] = new EnumCaseObjectType($enumCase->getDeclaringEnum()->getName(), $enumCase->getName(), $enumCase->getDeclaringEnum());
+					$hasMatching = true;
+					break;
+				}
+			}
+
+			if ($hasMatching) {
+				continue;
+			}
+
+			$addNull = true;
+		}
+
+		if (count($resultEnumCases) === 0) {
+			if ($methodReflection->getName() === 'tryFrom') {
+				return new NullType();
+			}
+
+			return null;
+		}
+
+		$result = TypeCombinator::union(...$resultEnumCases);
+		if ($addNull && $methodReflection->getName() === 'tryFrom') {
+			return TypeCombinator::addNull($result);
+		}
+
+		return $result;
+	}
+
+}
diff --git a/src/Type/Php/Base64DecodeDynamicFunctionReturnTypeExtension.php b/src/Type/Php/Base64DecodeDynamicFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..9c9d9235
--- /dev/null
+++ b/src/Type/Php/Base64DecodeDynamicFunctionReturnTypeExtension.php
@@ -0,0 +1,59 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+
+final class Base64DecodeDynamicFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'base64_decode';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		if (!isset($functionCall->getArgs()[1])) {
+			return new StringType();
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[1]->value);
+
+		if ($argType instanceof MixedType) {
+			return new BenevolentUnionType([new StringType(), new ConstantBooleanType(false)]);
+		}
+
+		$isTrueType = $argType->isTrue();
+		$isFalseType = $argType->isFalse();
+		$compareTypes = $isTrueType->compareTo($isFalseType);
+		if ($compareTypes === $isTrueType) {
+			return new UnionType([new StringType(), new ConstantBooleanType(false)]);
+		}
+		if ($compareTypes === $isFalseType) {
+			return new StringType();
+		}
+
+		// second argument could be interpreted as true
+		if (!$isTrueType->no()) {
+			return new UnionType([new StringType(), new ConstantBooleanType(false)]);
+		}
+
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/BcMathStringOrNullReturnTypeExtension.php b/src/Type/Php/BcMathStringOrNullReturnTypeExtension.php
new file mode 100644
index 00000000..e62fdbda
--- /dev/null
+++ b/src/Type/Php/BcMathStringOrNullReturnTypeExtension.php
@@ -0,0 +1,275 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\UnaryMinus;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function in_array;
+use function is_numeric;
+
+final class BcMathStringOrNullReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['bcdiv', 'bcmod', 'bcpowmod', 'bcsqrt'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		if ($functionReflection->getName() === 'bcsqrt') {
+			return $this->getTypeForBcSqrt($functionCall, $scope);
+		}
+
+		if ($functionReflection->getName() === 'bcpowmod') {
+			return $this->getTypeForBcPowMod($functionCall, $scope);
+		}
+
+		$stringAndNumericStringType = TypeCombinator::intersect(new StringType(), new AccessoryNumericStringType());
+
+		if (isset($functionCall->getArgs()[1]) === false) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new NullType();
+		}
+
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+			$defaultReturnType = $stringAndNumericStringType;
+		} else {
+			$defaultReturnType = new UnionType([$stringAndNumericStringType, new NullType()]);
+		}
+
+		$secondArgument = $scope->getType($functionCall->getArgs()[1]->value);
+		$secondArgumentIsNumeric = ($secondArgument instanceof ConstantScalarType && is_numeric($secondArgument->getValue())) || $secondArgument->isInteger()->yes();
+
+		if ($secondArgument instanceof ConstantScalarType && ($this->isZero($secondArgument->getValue()) || !$secondArgumentIsNumeric)) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new NullType();
+		}
+
+		if (isset($functionCall->getArgs()[2]) === false) {
+			if ($secondArgument instanceof ConstantScalarType || $secondArgumentIsNumeric) {
+				return $stringAndNumericStringType;
+			}
+
+			return $defaultReturnType;
+		}
+
+		$thirdArgument = $scope->getType($functionCall->getArgs()[2]->value);
+		$thirdArgumentIsNumeric = false;
+		$thirdArgumentIsNegative = false;
+		if ($thirdArgument instanceof ConstantScalarType && is_numeric($thirdArgument->getValue())) {
+			$thirdArgumentIsNumeric = true;
+			$thirdArgumentIsNegative = ($thirdArgument->getValue() < 0);
+		} elseif ($thirdArgument->isInteger()->yes()) {
+			$thirdArgumentIsNumeric = true;
+			if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($thirdArgument)->yes()) {
+				$thirdArgumentIsNegative = true;
+			}
+		}
+
+		if ($thirdArgument instanceof ConstantScalarType && !is_numeric($thirdArgument->getValue())) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new NullType();
+		}
+
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions() && $thirdArgumentIsNegative) {
+			return new NeverType();
+		}
+
+		if (($secondArgument instanceof ConstantScalarType || $secondArgumentIsNumeric) && $thirdArgumentIsNumeric) {
+			return $stringAndNumericStringType;
+		}
+
+		return $defaultReturnType;
+	}
+
+	/**
+	 * bcsqrt
+	 * https://www.php.net/manual/en/function.bcsqrt.php
+	 * > Returns the square root as a string, or NULL if operand is negative.
+	 *
+	 */
+	private function getTypeForBcSqrt(FuncCall $functionCall, Scope $scope): Type
+	{
+		$stringAndNumericStringType = TypeCombinator::intersect(new StringType(), new AccessoryNumericStringType());
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+			$defaultReturnType = $stringAndNumericStringType;
+		} else {
+			$defaultReturnType = new UnionType([$stringAndNumericStringType, new NullType()]);
+		}
+
+		if (isset($functionCall->getArgs()[0]) === false) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return $defaultReturnType;
+		}
+
+		$firstArgument = $scope->getType($functionCall->getArgs()[0]->value);
+
+		$firstArgumentIsPositive = $firstArgument instanceof ConstantScalarType && is_numeric($firstArgument->getValue()) && $firstArgument->getValue() >= 0;
+		$firstArgumentIsNegative = $firstArgument instanceof ConstantScalarType && is_numeric($firstArgument->getValue()) && $firstArgument->getValue() < 0;
+
+		if ($firstArgument instanceof UnaryMinus || $firstArgumentIsNegative) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new NullType();
+		}
+
+		if (isset($functionCall->getArgs()[1]) === false) {
+			if ($firstArgumentIsPositive) {
+				return $stringAndNumericStringType;
+			}
+
+			return $defaultReturnType;
+		}
+
+		$secondArgument = $scope->getType($functionCall->getArgs()[1]->value);
+		$secondArgumentIsValid = $secondArgument instanceof ConstantScalarType && is_numeric($secondArgument->getValue()) && !$this->isZero($secondArgument->getValue());
+		$secondArgumentIsNonNumeric = $secondArgument instanceof ConstantScalarType && !is_numeric($secondArgument->getValue());
+		$secondArgumentIsNegative = $secondArgument instanceof ConstantScalarType && is_numeric($secondArgument->getValue()) && $secondArgument->getValue() < 0;
+
+		if ($secondArgumentIsNonNumeric) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new NullType();
+		}
+
+		if ($secondArgument instanceof UnaryMinus || $secondArgumentIsNegative) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+		}
+
+		if ($firstArgumentIsPositive && $secondArgumentIsValid) {
+			return $stringAndNumericStringType;
+		}
+
+		return $defaultReturnType;
+	}
+
+	/**
+	 * bcpowmod()
+	 * https://www.php.net/manual/en/function.bcpowmod.php
+	 * > Returns the result as a string, or FALSE if modulus is 0 or exponent is negative.
+	 */
+	private function getTypeForBcPowMod(FuncCall $functionCall, Scope $scope): Type
+	{
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions() && isset($functionCall->getArgs()[0]) === false) {
+			return new NeverType();
+		}
+
+		$stringAndNumericStringType = TypeCombinator::intersect(new StringType(), new AccessoryNumericStringType());
+
+		if (isset($functionCall->getArgs()[1]) === false) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new UnionType([$stringAndNumericStringType, new ConstantBooleanType(false)]);
+		}
+
+		$exponent = $scope->getType($functionCall->getArgs()[1]->value);
+
+		// Expontent is non numeric
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()
+			&& $exponent instanceof ConstantScalarType && !is_numeric($exponent->getValue())
+		) {
+			return new NeverType();
+		}
+
+		$exponentIsNegative = IntegerRangeType::fromInterval(null, 0)->isSuperTypeOf($exponent)->yes();
+
+		if ($exponent instanceof ConstantScalarType) {
+			$exponentIsNegative = is_numeric($exponent->getValue()) && $exponent->getValue() < 0;
+		}
+
+		if ($exponentIsNegative) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new ConstantBooleanType(false);
+		}
+
+		if (isset($functionCall->getArgs()[2])) {
+			$modulus = $scope->getType($functionCall->getArgs()[2]->value);
+			$modulusIsZero = $modulus instanceof ConstantScalarType && $this->isZero($modulus->getValue());
+			$modulusIsNonNumeric = $modulus instanceof ConstantScalarType && !is_numeric($modulus->getValue());
+
+			if ($modulusIsZero || $modulusIsNonNumeric) {
+				if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+					return new NeverType();
+				}
+
+				return new ConstantBooleanType(false);
+			}
+
+			if ($modulus instanceof ConstantScalarType) {
+				return $stringAndNumericStringType;
+			}
+		} else {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+		}
+
+		if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+			return $stringAndNumericStringType;
+		}
+
+		return new UnionType([$stringAndNumericStringType, new ConstantBooleanType(false)]);
+	}
+
+	/**
+	 * Utility to help us determine if value is zero. Handles cases where we pass "0.000" too.
+	 *
+	 * @param mixed $value
+	 */
+	private function isZero($value): bool
+	{
+		if (is_numeric($value) === false) {
+			return false;
+		}
+
+		if ($value > 0 || $value < 0) {
+			return false;
+		}
+
+		return true;
+	}
+
+}
diff --git a/src/Type/Php/ClassExistsFunctionTypeSpecifyingExtension.php b/src/Type/Php/ClassExistsFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..58e768fa
--- /dev/null
+++ b/src/Type/Php/ClassExistsFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,76 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name\FullyQualified;
+use PhpParser\Node\Scalar\String_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\ObjectType;
+use function in_array;
+use function ltrim;
+
+final class ClassExistsFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return in_array($functionReflection->getName(), [
+			'class_exists',
+			'interface_exists',
+			'trait_exists',
+			'enum_exists',
+		], true) && isset($node->getArgs()[0]) && $context->true();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$argType = $scope->getType($node->getArgs()[0]->value);
+		if ($argType instanceof ConstantStringType) {
+			return $this->typeSpecifier->create(
+				new FuncCall(new FullyQualified('class_exists'), [
+					new Arg(new String_(ltrim($argType->getValue(), '\\'))),
+				]),
+				new ConstantBooleanType(true),
+				$context,
+				$scope,
+			);
+		}
+
+		$narrowedType = new ClassStringType();
+		if ($functionReflection->getName() === 'enum_exists') {
+			$narrowedType = new GenericClassStringType(new ObjectType('UnitEnum'));
+		}
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			$narrowedType,
+			$context,
+			$scope,
+		);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/ClassImplementsFunctionReturnTypeExtension.php b/src/Type/Php/ClassImplementsFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..41c776c5
--- /dev/null
+++ b/src/Type/Php/ClassImplementsFunctionReturnTypeExtension.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function count;
+use function in_array;
+
+final class ClassImplementsFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array(
+			$functionReflection->getName(),
+			['class_implements', 'class_uses', 'class_parents'],
+			true,
+		);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$firstArgType = $scope->getType($args[0]->value);
+		$autoload = TrinaryLogic::createYes();
+		if (isset($args[1])) {
+			$autoload = $scope->getType($args[1]->value)->isTrue();
+		}
+
+		$isObject = $firstArgType->isObject();
+		$variant = ParametersAcceptorSelector::selectFromArgs($scope, $args, $functionReflection->getVariants());
+		if ($isObject->yes()) {
+			return TypeCombinator::remove($variant->getReturnType(), new ConstantBooleanType(false));
+		}
+		$isClassStringOrObject = (new UnionType([new ObjectWithoutClassType(), new ClassStringType()]))->isSuperTypeOf($firstArgType);
+		if ($isClassStringOrObject->yes()) {
+			if ($autoload->yes()) {
+				return TypeUtils::toBenevolentUnion($variant->getReturnType());
+			}
+
+			return $variant->getReturnType();
+		}
+
+		if ($firstArgType->isClassString()->no()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ClosureBindDynamicReturnTypeExtension.php b/src/Type/Php/ClosureBindDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..5d3eaebe
--- /dev/null
+++ b/src/Type/Php/ClosureBindDynamicReturnTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use Closure;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\Type;
+
+final class ClosureBindDynamicReturnTypeExtension implements DynamicStaticMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return Closure::class;
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'bind';
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		$closureType = $scope->getType($methodCall->getArgs()[0]->value);
+		if (!($closureType instanceof ClosureType)) {
+			return null;
+		}
+
+		return $closureType;
+	}
+
+}
diff --git a/src/Type/Php/ClosureBindToDynamicReturnTypeExtension.php b/src/Type/Php/ClosureBindToDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..5591b1aa
--- /dev/null
+++ b/src/Type/Php/ClosureBindToDynamicReturnTypeExtension.php
@@ -0,0 +1,37 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use Closure;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\Type;
+
+final class ClosureBindToDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return Closure::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'bindTo';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		$closureType = $scope->getType($methodCall->var);
+		if (!($closureType instanceof ClosureType)) {
+			return null;
+		}
+
+		return $closureType;
+	}
+
+}
diff --git a/src/Type/Php/ClosureFromCallableDynamicReturnTypeExtension.php b/src/Type/Php/ClosureFromCallableDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..9b0cea6b
--- /dev/null
+++ b/src/Type/Php/ClosureFromCallableDynamicReturnTypeExtension.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use Closure;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ExtendedParametersAcceptor;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Generic\TemplateTypeVarianceMap;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class ClosureFromCallableDynamicReturnTypeExtension implements DynamicStaticMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return Closure::class;
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'fromCallable';
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (!isset($methodCall->getArgs()[0])) {
+			return null;
+		}
+
+		$callableType = $scope->getType($methodCall->getArgs()[0]->value);
+		if ($callableType->isCallable()->no()) {
+			return new ErrorType();
+		}
+
+		$closureTypes = [];
+		foreach ($callableType->getCallableParametersAcceptors($scope) as $variant) {
+			$parameters = $variant->getParameters();
+			$closureTypes[] = new ClosureType(
+				$parameters,
+				$variant->getReturnType(),
+				$variant->isVariadic(),
+				$variant->getTemplateTypeMap(),
+				$variant->getResolvedTemplateTypeMap(),
+				$variant instanceof ExtendedParametersAcceptor ? $variant->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
+				[],
+				$variant->getThrowPoints(),
+				$variant->getImpurePoints(),
+				$variant->getInvalidateExpressions(),
+				$variant->getUsedVariables(),
+				$variant->acceptsNamedArguments(),
+			);
+		}
+
+		return TypeCombinator::union(...$closureTypes);
+	}
+
+}
diff --git a/src/Type/Php/CompactFunctionReturnTypeExtension.php b/src/Type/Php/CompactFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..d691ff07
--- /dev/null
+++ b/src/Type/Php/CompactFunctionReturnTypeExtension.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function array_merge;
+use function count;
+
+final class CompactFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private bool $checkMaybeUndefinedVariables)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'compact';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			return null;
+		}
+
+		if ($scope->canAnyVariableExist() && !$this->checkMaybeUndefinedVariables) {
+			return null;
+		}
+
+		$array = ConstantArrayTypeBuilder::createEmpty();
+		foreach ($functionCall->getArgs() as $arg) {
+			$type = $scope->getType($arg->value);
+			$constantStrings = $this->findConstantStrings($type);
+			if ($constantStrings === null) {
+				return null;
+			}
+			foreach ($constantStrings as $constantString) {
+				$has = $scope->hasVariableType($constantString->getValue());
+				if ($has->no()) {
+					continue;
+				}
+
+				$array->setOffsetValueType($constantString, $scope->getVariableType($constantString->getValue()), $has->maybe());
+			}
+		}
+
+		return $array->getArray();
+	}
+
+	/**
+	 * @return array<int, ConstantStringType>|null
+	 */
+	private function findConstantStrings(Type $type): ?array
+	{
+		if ($type instanceof ConstantStringType) {
+			return [$type];
+		}
+
+		if ($type instanceof ConstantArrayType) {
+			$result = [];
+			foreach ($type->getValueTypes() as $valueType) {
+				$constantStrings = $this->findConstantStrings($valueType);
+				if ($constantStrings === null) {
+					return null;
+				}
+
+				$result = array_merge($result, $constantStrings);
+			}
+
+			return $result;
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ConstantFunctionReturnTypeExtension.php b/src/Type/Php/ConstantFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..fe4d6014
--- /dev/null
+++ b/src/Type/Php/ConstantFunctionReturnTypeExtension.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class ConstantFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private ConstantHelper $constantHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'constant';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$nameType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		$results = [];
+		foreach ($nameType->getConstantStrings() as $constantName) {
+			$expr = $this->constantHelper->createExprFromConstantName($constantName->getValue());
+			if ($expr === null) {
+				return new ErrorType();
+			}
+
+			$results[] = $scope->getType($expr);
+		}
+
+		if (count($results) > 0) {
+			return TypeCombinator::union(...$results);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ConstantHelper.php b/src/Type/Php/ConstantHelper.php
new file mode 100644
index 00000000..267c1952
--- /dev/null
+++ b/src/Type/Php/ConstantHelper.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified;
+use function count;
+use function explode;
+use function ltrim;
+
+final class ConstantHelper
+{
+
+	public function createExprFromConstantName(string $constantName): ?Expr
+	{
+		if ($constantName === '') {
+			return null;
+		}
+
+		$classConstParts = explode('::', $constantName);
+		if (count($classConstParts) >= 2) {
+			$fqcn = ltrim($classConstParts[0], '\\');
+			if ($fqcn === '') {
+				return null;
+			}
+
+			$classConstName = new FullyQualified($fqcn);
+			if ($classConstName->isSpecialClassName()) {
+				$classConstName = new Name($classConstName->toString());
+			}
+
+			return new ClassConstFetch($classConstName, new Identifier($classConstParts[1]));
+		}
+
+		return new ConstFetch(new FullyQualified($constantName));
+	}
+
+}
diff --git a/src/Type/Php/CountCharsFunctionDynamicReturnTypeExtension.php b/src/Type/Php/CountCharsFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..25dbfcc2
--- /dev/null
+++ b/src/Type/Php/CountCharsFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class CountCharsFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'count_chars';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$modeType = count($args) === 2 ? $scope->getType($args[1]->value) : new ConstantIntegerType(0);
+
+		if (IntegerRangeType::fromInterval(0, 2)->isSuperTypeOf($modeType)->yes()) {
+			$arrayType = new ArrayType(new IntegerType(), new IntegerType());
+
+			return $this->phpVersion->throwsValueErrorForInternalFunctions()
+				? $arrayType
+				: TypeUtils::toBenevolentUnion(new UnionType([$arrayType, new ConstantBooleanType(false)]));
+		}
+
+		$stringType = new StringType();
+
+		return $this->phpVersion->throwsValueErrorForInternalFunctions()
+			? $stringType
+			: TypeUtils::toBenevolentUnion(new UnionType([$stringType, new ConstantBooleanType(false)]));
+	}
+
+}
diff --git a/src/Type/Php/CountFunctionReturnTypeExtension.php b/src/Type/Php/CountFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..3b2afb10
--- /dev/null
+++ b/src/Type/Php/CountFunctionReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+use const COUNT_RECURSIVE;
+
+final class CountFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['sizeof', 'count'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		if (count($functionCall->getArgs()) > 1) {
+			$mode = $scope->getType($functionCall->getArgs()[1]->value);
+			if ($mode->isSuperTypeOf(new ConstantIntegerType(COUNT_RECURSIVE))->yes()) {
+				return null;
+			}
+		}
+
+		return $scope->getType($functionCall->getArgs()[0]->value)->getArraySize();
+	}
+
+}
diff --git a/src/Type/Php/CountFunctionTypeSpecifyingExtension.php b/src/Type/Php/CountFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..f5854e45
--- /dev/null
+++ b/src/Type/Php/CountFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function count;
+use function in_array;
+
+final class CountFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return !$context->null()
+			&& count($node->getArgs()) >= 1
+			&& in_array($functionReflection->getName(), ['sizeof', 'count'], true);
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		if (!$scope->getType($node->getArgs()[0]->value)->isArray()->yes()) {
+			return new SpecifiedTypes([], []);
+		}
+
+		return $this->typeSpecifier->create($node->getArgs()[0]->value, new NonEmptyArrayType(), $context, $scope);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/CtypeDigitFunctionTypeSpecifyingExtension.php b/src/Type/Php/CtypeDigitFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..ace7cd1e
--- /dev/null
+++ b/src/Type/Php/CtypeDigitFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,87 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\Cast;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function strtolower;
+
+final class CtypeDigitFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'ctype_digit'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if (!isset($node->getArgs()[0])) {
+			return new SpecifiedTypes();
+		}
+		if ($context->null()) {
+			throw new ShouldNotHappenException();
+		}
+
+		$exprArg = $node->getArgs()[0]->value;
+		if ($context->true() && $scope->getType($exprArg)->isNumericString()->yes()) {
+			return new SpecifiedTypes();
+		}
+
+		$types = [
+			IntegerRangeType::fromInterval(48, 57), // ASCII-codes for 0-9
+			IntegerRangeType::createAllGreaterThanOrEqualTo(256), // Starting from 256 ints are interpreted as strings
+		];
+
+		if ($context->true()) {
+			$types[] = new IntersectionType([
+				new StringType(),
+				new AccessoryNumericStringType(),
+			]);
+		}
+
+		$unionType = TypeCombinator::union(...$types);
+		$specifiedTypes = $this->typeSpecifier->create($exprArg, $unionType, $context, $scope);
+
+		if ($exprArg instanceof Cast\String_) {
+			$castedType = new UnionType([
+				IntegerRangeType::fromInterval(0, null),
+				new IntersectionType([
+					new StringType(),
+					new AccessoryNumericStringType(),
+				]),
+				new ConstantBooleanType(true),
+			]);
+			$specifiedTypes = $specifiedTypes->unionWith(
+				$this->typeSpecifier->create($exprArg->expr, $castedType, $context, $scope),
+			);
+		}
+
+		return $specifiedTypes;
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/CurlGetinfoFunctionDynamicReturnTypeExtension.php b/src/Type/Php/CurlGetinfoFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..cbcfc107
--- /dev/null
+++ b/src/Type/Php/CurlGetinfoFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,201 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function count;
+
+final class CurlGetinfoFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'curl_getinfo';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		if (count($functionCall->getArgs()) <= 1) {
+			return $this->createAllComponentsReturnType();
+		}
+
+		$componentType = $scope->getType($functionCall->getArgs()[1]->value);
+		if (!$componentType->isNull()->no()) {
+			return $this->createAllComponentsReturnType();
+		}
+
+		$componentType = $componentType->toInteger();
+		if (!$componentType instanceof ConstantIntegerType) {
+			return $this->createAllComponentsReturnType();
+		}
+
+		$stringType = new StringType();
+		$integerType = new IntegerType();
+		$floatType = new FloatType();
+		$falseType = new ConstantBooleanType(false);
+		$stringFalseType = TypeCombinator::union($stringType, $falseType);
+		$integerStringArrayType = new ArrayType($integerType, $stringType);
+		$nestedStringStringArrayType = new ArrayType($integerType, new ArrayType($stringType, $stringType));
+
+		$componentTypesPairedConstants = [
+			'CURLINFO_EFFECTIVE_URL' => $stringType,
+			'CURLINFO_FILETIME' => $integerType,
+			'CURLINFO_TOTAL_TIME' => $floatType,
+			'CURLINFO_NAMELOOKUP_TIME' => $floatType,
+			'CURLINFO_CONNECT_TIME' => $floatType,
+			'CURLINFO_PRETRANSFER_TIME' => $floatType,
+			'CURLINFO_STARTTRANSFER_TIME' => $floatType,
+			'CURLINFO_REDIRECT_COUNT' => $integerType,
+			'CURLINFO_REDIRECT_TIME' => $floatType,
+			'CURLINFO_REDIRECT_URL' => $stringType,
+			'CURLINFO_PRIMARY_IP' => $stringType,
+			'CURLINFO_PRIMARY_PORT' => $integerType,
+			'CURLINFO_LOCAL_IP' => $stringType,
+			'CURLINFO_LOCAL_PORT' => $integerType,
+			'CURLINFO_SIZE_UPLOAD' => $integerType,
+			'CURLINFO_SIZE_DOWNLOAD' => $integerType,
+			'CURLINFO_SPEED_DOWNLOAD' => $integerType,
+			'CURLINFO_SPEED_UPLOAD' => $integerType,
+			'CURLINFO_HEADER_SIZE' => $integerType,
+			'CURLINFO_HEADER_OUT' => $stringFalseType,
+			'CURLINFO_REQUEST_SIZE' => $integerType,
+			'CURLINFO_SSL_VERIFYRESULT' => $integerType,
+			'CURLINFO_CONTENT_LENGTH_DOWNLOAD' => $floatType,
+			'CURLINFO_CONTENT_LENGTH_UPLOAD' => $floatType,
+			'CURLINFO_CONTENT_TYPE' => $stringFalseType,
+			'CURLINFO_PRIVATE' => $stringFalseType,
+			'CURLINFO_RESPONSE_CODE' => $integerType,
+			'CURLINFO_HTTP_CONNECTCODE' => $integerType,
+			'CURLINFO_HTTPAUTH_AVAIL' => $integerType,
+			'CURLINFO_PROXYAUTH_AVAIL' => $integerType,
+			'CURLINFO_OS_ERRNO' => $integerType,
+			'CURLINFO_NUM_CONNECTS' => $integerType,
+			'CURLINFO_SSL_ENGINES' => $integerStringArrayType,
+			'CURLINFO_COOKIELIST' => $integerStringArrayType,
+			'CURLINFO_FTP_ENTRY_PATH' => $stringFalseType,
+			'CURLINFO_APPCONNECT_TIME' => $floatType,
+			'CURLINFO_CERTINFO' => $nestedStringStringArrayType,
+			'CURLINFO_CONDITION_UNMET' => $integerType,
+			'CURLINFO_RTSP_CLIENT_CSEQ' => $integerType,
+			'CURLINFO_RTSP_CSEQ_RECV' => $integerType,
+			'CURLINFO_RTSP_SERVER_CSEQ' => $integerType,
+			'CURLINFO_RTSP_SESSION_ID' => $integerType,
+			'CURLINFO_HTTP_VERSION' => $integerType,
+			'CURLINFO_PROTOCOL' => $stringType,
+			'CURLINFO_PROXY_SSL_VERIFYRESULT' => $integerType,
+			'CURLINFO_SCHEME' => $stringType,
+			'CURLINFO_CONTENT_LENGTH_DOWNLOAD_T' => $integerType,
+			'CURLINFO_CONTENT_LENGTH_UPLOAD_T' => $integerType,
+			'CURLINFO_SIZE_DOWNLOAD_T' => $integerType,
+			'CURLINFO_SIZE_UPLOAD_T' => $integerType,
+			'CURLINFO_SPEED_DOWNLOAD_T' => $integerType,
+			'CURLINFO_SPEED_UPLOAD_T' => $integerType,
+			'CURLINFO_APPCONNECT_TIME_T' => $integerType,
+			'CURLINFO_CONNECT_TIME_T' => $integerType,
+			'CURLINFO_FILETIME_T' => $integerType,
+			'CURLINFO_NAMELOOKUP_TIME_T' => $integerType,
+			'CURLINFO_PRETRANSFER_TIME_T' => $integerType,
+			'CURLINFO_REDIRECT_TIME_T' => $integerType,
+			'CURLINFO_STARTTRANSFER_TIME_T' => $integerType,
+			'CURLINFO_TOTAL_TIME_T' => $integerType,
+		];
+
+		foreach ($componentTypesPairedConstants as $constantName => $type) {
+			$constantNameNode = new Name($constantName);
+			if ($this->reflectionProvider->hasConstant($constantNameNode, $scope) === false) {
+				continue;
+			}
+
+			$valueType = $this->reflectionProvider->getConstant($constantNameNode, $scope)->getValueType();
+			if ($componentType->isSuperTypeOf($valueType)->yes()) {
+				 return $type;
+			}
+		}
+
+		return $falseType;
+	}
+
+	private function createAllComponentsReturnType(): Type
+	{
+		$returnTypes = [
+			new ConstantBooleanType(false),
+		];
+
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		$stringType = new StringType();
+		$integerType = new IntegerType();
+		$floatType = new FloatType();
+		$stringOrNullType = TypeCombinator::union($stringType, new NullType());
+		$nestedStringStringArrayType = new ArrayType($integerType, new ArrayType($stringType, $stringType));
+
+		$componentTypesPairedStrings = [
+			'url' => $stringType,
+			'content_type' => $stringOrNullType,
+			'http_code' => $integerType,
+			'header_size' => $integerType,
+			'request_size' => $integerType,
+			'filetime' => $integerType,
+			'ssl_verify_result' => $integerType,
+			'redirect_count' => $integerType,
+			'total_time' => $floatType,
+			'namelookup_time' => $floatType,
+			'connect_time' => $floatType,
+			'pretransfer_time' => $floatType,
+			'size_upload' => $floatType,
+			'size_download' => $floatType,
+			'speed_download' => $floatType,
+			'speed_upload' => $floatType,
+			'download_content_length' => $floatType,
+			'upload_content_length' => $floatType,
+			'starttransfer_time' => $floatType,
+			'redirect_time' => $floatType,
+			'redirect_url' => $stringType,
+			'primary_ip' => $stringType,
+			'certinfo' => $nestedStringStringArrayType,
+			'primary_port' => $integerType,
+			'local_ip' => $stringType,
+			'local_port' => $integerType,
+			'http_version' => $integerType,
+			'protocol' => $integerType,
+			'ssl_verifyresult' => $integerType,
+			'scheme' => $stringType,
+		];
+		foreach ($componentTypesPairedStrings as $componentName => $componentValueType) {
+			$builder->setOffsetValueType(new ConstantStringType($componentName), $componentValueType);
+		}
+
+		$returnTypes[] = $builder->getArray();
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$returnTypes));
+	}
+
+}
diff --git a/src/Type/Php/DateFormatFunctionReturnTypeExtension.php b/src/Type/Php/DateFormatFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..b9b3cfc5
--- /dev/null
+++ b/src/Type/Php/DateFormatFunctionReturnTypeExtension.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+
+final class DateFormatFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private DateFunctionReturnTypeHelper $dateFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'date_format';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return new StringType();
+		}
+
+		return $this->dateFunctionReturnTypeHelper->getTypeFromFormatType(
+			$scope->getType($functionCall->getArgs()[1]->value),
+			true,
+		);
+	}
+
+}
diff --git a/src/Type/Php/DateFormatMethodReturnTypeExtension.php b/src/Type/Php/DateFormatMethodReturnTypeExtension.php
new file mode 100644
index 00000000..c7d198c9
--- /dev/null
+++ b/src/Type/Php/DateFormatMethodReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTimeInterface;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+
+final class DateFormatMethodReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function __construct(private DateFunctionReturnTypeHelper $dateFunctionReturnTypeHelper)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return DateTimeInterface::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'format';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return new StringType();
+		}
+
+		return $this->dateFunctionReturnTypeHelper->getTypeFromFormatType(
+			$scope->getType($methodCall->getArgs()[0]->value),
+			true,
+		);
+	}
+
+}
diff --git a/src/Type/Php/DateFunctionReturnTypeExtension.php b/src/Type/Php/DateFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..0c8f8bc7
--- /dev/null
+++ b/src/Type/Php/DateFunctionReturnTypeExtension.php
@@ -0,0 +1,41 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+
+final class DateFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private DateFunctionReturnTypeHelper $dateFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'date';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			return null;
+		}
+
+		return $this->dateFunctionReturnTypeHelper->getTypeFromFormatType(
+			$scope->getType($functionCall->getArgs()[0]->value),
+			false,
+		);
+	}
+
+}
diff --git a/src/Type/Php/DateFunctionReturnTypeHelper.php b/src/Type/Php/DateFunctionReturnTypeHelper.php
new file mode 100644
index 00000000..58476cb1
--- /dev/null
+++ b/src/Type/Php/DateFunctionReturnTypeHelper.php
@@ -0,0 +1,115 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function count;
+use function date;
+use function is_numeric;
+use function str_pad;
+use const STR_PAD_LEFT;
+
+final class DateFunctionReturnTypeHelper
+{
+
+	public function getTypeFromFormatType(Type $formatType, bool $useMicrosec): Type
+	{
+		$types = [];
+		foreach ($formatType->getConstantStrings() as $formatString) {
+			$types[] = $this->buildReturnTypeFromFormat($formatString->getValue(), $useMicrosec);
+		}
+
+		if (count($types) === 0) {
+			$types[] = $formatType->isNonEmptyString()->yes()
+				? new IntersectionType([new StringType(), new AccessoryNonEmptyStringType()])
+				: new StringType();
+		}
+
+		$type = TypeCombinator::union(...$types);
+
+		if ($type->isNumericString()->no() && $formatType->isNonEmptyString()->yes()) {
+			$type = TypeCombinator::union($type, new IntersectionType([
+				new StringType(), new AccessoryNonEmptyStringType(),
+			]));
+		}
+
+		return $type;
+	}
+
+	public function buildReturnTypeFromFormat(string $formatString, bool $useMicrosec): Type
+	{
+		// see see https://www.php.net/manual/en/datetime.format.php
+		switch ($formatString) {
+			case 'd':
+				return $this->buildNumericRangeType(1, 31, true);
+			case 'j':
+				return $this->buildNumericRangeType(1, 31, false);
+			case 'N':
+				return $this->buildNumericRangeType(1, 7, false);
+			case 'w':
+				return $this->buildNumericRangeType(0, 6, false);
+			case 'm':
+				return $this->buildNumericRangeType(1, 12, true);
+			case 'n':
+				return $this->buildNumericRangeType(1, 12, false);
+			case 't':
+				return $this->buildNumericRangeType(28, 31, false);
+			case 'L':
+				return $this->buildNumericRangeType(0, 1, false);
+			case 'g':
+				return $this->buildNumericRangeType(1, 12, false);
+			case 'G':
+				return $this->buildNumericRangeType(0, 23, false);
+			case 'h':
+				return $this->buildNumericRangeType(1, 12, true);
+			case 'H':
+				return $this->buildNumericRangeType(0, 23, true);
+			case 'I':
+				return $this->buildNumericRangeType(0, 1, false);
+			case 'u':
+				return $useMicrosec
+					? new IntersectionType([new StringType(), new AccessoryNonFalsyStringType()])
+					: new ConstantStringType('000000');
+		}
+
+		$date = date($formatString);
+
+		// If parameter string is not included, returned as ConstantStringType
+		if ($date === $formatString) {
+			return new ConstantStringType($date);
+		}
+
+		if (is_numeric($date)) {
+			return new IntersectionType([new StringType(), new AccessoryNumericStringType()]);
+		}
+
+		return new IntersectionType([new StringType(), new AccessoryNonFalsyStringType()]);
+	}
+
+	private function buildNumericRangeType(int $min, int $max, bool $zeroPad): Type
+	{
+		$types = [];
+
+		for ($i = $min; $i <= $max; $i++) {
+			$string = (string) $i;
+
+			if ($zeroPad) {
+				$string = str_pad($string, 2, '0', STR_PAD_LEFT);
+			}
+
+			$types[] = new ConstantStringType($string);
+		}
+
+		return new UnionType($types);
+	}
+
+}
diff --git a/src/Type/Php/DateIntervalConstructorThrowTypeExtension.php b/src/Type/Php/DateIntervalConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..eca35044
--- /dev/null
+++ b/src/Type/Php/DateIntervalConstructorThrowTypeExtension.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateInterval;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class DateIntervalConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === DateInterval::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		foreach ($constantStrings as $constantString) {
+			try {
+				new DateInterval($constantString->getValue());
+			} catch (\Exception $e) { // phpcs:ignore
+				return $this->exceptionType();
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $this->exceptionType();
+		}
+
+		return null;
+	}
+
+	private function exceptionType(): Type
+	{
+		if ($this->phpVersion->hasDateTimeExceptions()) {
+			return new ObjectType('DateMalformedIntervalStringException');
+		}
+
+		return new ObjectType('Exception');
+	}
+
+}
diff --git a/src/Type/Php/DateIntervalDynamicReturnTypeExtension.php b/src/Type/Php/DateIntervalDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..026859dc
--- /dev/null
+++ b/src/Type/Php/DateIntervalDynamicReturnTypeExtension.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateInterval;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use Throwable;
+use function count;
+use function in_array;
+
+final class DateIntervalDynamicReturnTypeExtension
+implements DynamicStaticMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return DateInterval::class;
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'createFromDateString';
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		$arguments = $methodCall->getArgs();
+
+		if (!isset($arguments[0])) {
+			return null;
+		}
+
+		$strings = $scope->getType($arguments[0]->value)->getConstantStrings();
+
+		$possibleReturnTypes = [];
+		foreach ($strings as $string) {
+			try {
+				$result = @DateInterval::createFromDateString($string->getValue());
+			} catch (Throwable) {
+				$possibleReturnTypes[] = false;
+				continue;
+			}
+			$possibleReturnTypes[] = $result instanceof DateInterval ? DateInterval::class : false;
+		}
+
+		// the error case, when wrong types are passed
+		if (count($possibleReturnTypes) === 0) {
+			return null;
+		}
+
+		if (in_array(false, $possibleReturnTypes, true) && in_array(DateInterval::class, $possibleReturnTypes, true)) {
+			return null;
+		}
+
+		if (in_array(false, $possibleReturnTypes, true)) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new ObjectType(DateInterval::class);
+	}
+
+}
diff --git a/src/Type/Php/DatePeriodConstructorReturnTypeExtension.php b/src/Type/Php/DatePeriodConstructorReturnTypeExtension.php
new file mode 100644
index 00000000..a7420c7e
--- /dev/null
+++ b/src/Type/Php/DatePeriodConstructorReturnTypeExtension.php
@@ -0,0 +1,85 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DatePeriod;
+use DateTime;
+use DateTimeInterface;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use function strtolower;
+
+final class DatePeriodConstructorReturnTypeExtension implements DynamicStaticMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return DatePeriod::class;
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct';
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): Type
+	{
+		if (!isset($methodCall->getArgs()[0])) {
+			return new ObjectType(DatePeriod::class);
+		}
+
+		if (!$methodCall->class instanceof Name) {
+			return new ObjectType(DatePeriod::class);
+		}
+
+		$className = $scope->resolveName($methodCall->class);
+		if (strtolower($className) !== 'dateperiod') {
+			return new ObjectType($className);
+		}
+
+		$firstArgType = $scope->getType($methodCall->getArgs()[0]->value);
+		if ($firstArgType->isString()->yes()) {
+			$firstArgType = new ObjectType(DateTime::class);
+		}
+		$thirdArgType = null;
+		if (isset($methodCall->getArgs()[2])) {
+			$thirdArgType = $scope->getType($methodCall->getArgs()[2]->value);
+		}
+
+		if (!$thirdArgType instanceof Type) {
+			return new GenericObjectType(DatePeriod::class, [
+				$firstArgType,
+				new NullType(),
+				new IntegerType(),
+			]);
+		}
+
+		if ((new ObjectType(DateTimeInterface::class))->isSuperTypeOf($thirdArgType)->yes()) {
+			return new GenericObjectType(DatePeriod::class, [
+				$firstArgType,
+				$thirdArgType,
+				new NullType(),
+			]);
+		}
+
+		if ($thirdArgType->isInteger()->yes()) {
+			return new GenericObjectType(DatePeriod::class, [
+				$firstArgType,
+				new NullType(),
+				$thirdArgType,
+			]);
+		}
+
+		return new ObjectType(DatePeriod::class);
+	}
+
+}
diff --git a/src/Type/Php/DateTimeConstructorThrowTypeExtension.php b/src/Type/Php/DateTimeConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..542bf256
--- /dev/null
+++ b/src/Type/Php/DateTimeConstructorThrowTypeExtension.php
@@ -0,0 +1,67 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class DateTimeConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && in_array($methodReflection->getDeclaringClass()->getName(), [DateTime::class, DateTimeImmutable::class], true);
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return null;
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		foreach ($constantStrings as $constantString) {
+			try {
+				new DateTime($constantString->getValue());
+			} catch (\Exception $e) { // phpcs:ignore
+				return $this->exceptionType();
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $this->exceptionType();
+		}
+
+		return null;
+	}
+
+	private function exceptionType(): Type
+	{
+		if ($this->phpVersion->hasDateTimeExceptions()) {
+			return new ObjectType('DateMalformedStringException');
+		}
+
+		return new ObjectType('Exception');
+	}
+
+}
diff --git a/src/Type/Php/DateTimeCreateDynamicReturnTypeExtension.php b/src/Type/Php/DateTimeCreateDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..0055f851
--- /dev/null
+++ b/src/Type/Php/DateTimeCreateDynamicReturnTypeExtension.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function date_create;
+use function in_array;
+
+final class DateTimeCreateDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['date_create', 'date_create_immutable'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$datetimes = $scope->getType($functionCall->getArgs()[0]->value)->getConstantStrings();
+
+		if (count($datetimes) === 0) {
+			return null;
+		}
+
+		$types = [];
+		$className = $functionReflection->getName() === 'date_create' ? DateTime::class : DateTimeImmutable::class;
+		foreach ($datetimes as $constantString) {
+			$isValid = date_create($constantString->getValue()) !== false;
+			$types[] = $isValid ? new ObjectType($className) : new ConstantBooleanType(false);
+		}
+
+		return TypeCombinator::union(...$types);
+	}
+
+}
diff --git a/src/Type/Php/DateTimeDynamicReturnTypeExtension.php b/src/Type/Php/DateTimeDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..4e57af2f
--- /dev/null
+++ b/src/Type/Php/DateTimeDynamicReturnTypeExtension.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class DateTimeDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['date_create_from_format', 'date_create_immutable_from_format'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$formats = $scope->getType($functionCall->getArgs()[0]->value)->getConstantStrings();
+		$datetimes = $scope->getType($functionCall->getArgs()[1]->value)->getConstantStrings();
+
+		if (count($formats) === 0 || count($datetimes) === 0) {
+			return null;
+		}
+
+		$types = [];
+		$className = $functionReflection->getName() === 'date_create_from_format' ? DateTime::class : DateTimeImmutable::class;
+		foreach ($formats as $formatConstantString) {
+			foreach ($datetimes as $datetimeConstantString) {
+				$isValid = (DateTime::createFromFormat($formatConstantString->getValue(), $datetimeConstantString->getValue()) !== false);
+				$types[] = $isValid ? new ObjectType($className) : new ConstantBooleanType(false);
+			}
+		}
+
+		return TypeCombinator::union(...$types);
+	}
+
+}
diff --git a/src/Type/Php/DateTimeModifyMethodThrowTypeExtension.php b/src/Type/Php/DateTimeModifyMethodThrowTypeExtension.php
new file mode 100644
index 00000000..bc994709
--- /dev/null
+++ b/src/Type/Php/DateTimeModifyMethodThrowTypeExtension.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class DateTimeModifyMethodThrowTypeExtension implements DynamicMethodThrowTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'modify' && in_array($methodReflection->getDeclaringClass()->getName(), [DateTime::class, DateTimeImmutable::class], true);
+	}
+
+	public function getThrowTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return null;
+		}
+
+		if (!$this->phpVersion->hasDateTimeExceptions()) {
+			return null;
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		foreach ($constantStrings as $constantString) {
+			try {
+				$dateTime = new DateTime();
+				$dateTime->modify($constantString->getValue());
+			} catch (\Exception $e) { // phpcs:ignore
+				return $this->exceptionType();
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $this->exceptionType();
+		}
+
+		return null;
+	}
+
+	private function exceptionType(): Type
+	{
+		if ($this->phpVersion->hasDateTimeExceptions()) {
+			return new ObjectType('DateMalformedStringException');
+		}
+
+		return new ObjectType('Exception');
+	}
+
+}
diff --git a/src/Type/Php/DateTimeModifyReturnTypeExtension.php b/src/Type/Php/DateTimeModifyReturnTypeExtension.php
new file mode 100644
index 00000000..162cadc0
--- /dev/null
+++ b/src/Type/Php/DateTimeModifyReturnTypeExtension.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeInterface;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use Throwable;
+use function count;
+
+final class DateTimeModifyReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	/** @param class-string<DateTimeInterface> $dateTimeClass */
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private string $dateTimeClass,
+	)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return $this->dateTimeClass;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'modify';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		$hasFalse = false;
+		$hasDateTime = false;
+
+		foreach ($constantStrings as $constantString) {
+			try {
+				$result = @(new DateTime())->modify($constantString->getValue());
+			} catch (Throwable) {
+				$valueType = TypeCombinator::remove($valueType, $constantString);
+				continue;
+			}
+
+			if ($result === false) {
+				$hasFalse = true;
+			} else {
+				$hasDateTime = true;
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return null;
+		}
+
+		if ($hasFalse) {
+			if (!$hasDateTime) {
+				return new ConstantBooleanType(false);
+			}
+
+			return null;
+		} elseif ($hasDateTime) {
+			return $scope->getType($methodCall->var);
+		}
+
+		if ($this->phpVersion->hasDateTimeExceptions()) {
+			return new NeverType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/DateTimeSubMethodThrowTypeExtension.php b/src/Type/Php/DateTimeSubMethodThrowTypeExtension.php
new file mode 100644
index 00000000..8f8a6190
--- /dev/null
+++ b/src/Type/Php/DateTimeSubMethodThrowTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodThrowTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+
+final class DateTimeSubMethodThrowTypeExtension implements DynamicMethodThrowTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'sub'
+			&& in_array($methodReflection->getDeclaringClass()->getName(), [DateTime::class, DateTimeImmutable::class], true);
+	}
+
+	public function getThrowTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return null;
+		}
+
+		if (!$this->phpVersion->hasDateTimeExceptions()) {
+			return null;
+		}
+
+		return new ObjectType('DateInvalidOperationException');
+	}
+
+}
diff --git a/src/Type/Php/DateTimeZoneConstructorThrowTypeExtension.php b/src/Type/Php/DateTimeZoneConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..a45f7543
--- /dev/null
+++ b/src/Type/Php/DateTimeZoneConstructorThrowTypeExtension.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use DateTimeZone;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+
+final class DateTimeZoneConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === DateTimeZone::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return null;
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		foreach ($constantStrings as $constantString) {
+			try {
+				new DateTimeZone($constantString->getValue());
+			} catch (\Exception $e) { // phpcs:ignore
+				return $this->exceptionType();
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $this->exceptionType();
+		}
+
+		return null;
+	}
+
+	private function exceptionType(): Type
+	{
+		if ($this->phpVersion->hasDateTimeExceptions()) {
+			return new ObjectType('DateInvalidTimeZoneException');
+		}
+
+		return new ObjectType('Exception');
+	}
+
+}
diff --git a/src/Type/Php/DefineConstantTypeSpecifyingExtension.php b/src/Type/Php/DefineConstantTypeSpecifyingExtension.php
new file mode 100644
index 00000000..306d507a
--- /dev/null
+++ b/src/Type/Php/DefineConstantTypeSpecifyingExtension.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function count;
+
+final class DefineConstantTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return $functionReflection->getName() === 'define'
+			&& $context->null()
+			&& count($node->getArgs()) >= 2;
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		$constantName = $scope->getType($node->getArgs()[0]->value);
+		if (
+			!$constantName instanceof ConstantStringType
+			|| $constantName->getValue() === ''
+		) {
+			return new SpecifiedTypes([], []);
+		}
+
+		return $this->typeSpecifier->create(
+			new Node\Expr\ConstFetch(
+				new Node\Name\FullyQualified($constantName->getValue()),
+			),
+			$scope->getType($node->getArgs()[1]->value),
+			TypeSpecifierContext::createTruthy(),
+			$scope,
+		)->setAlwaysOverwriteTypes();
+	}
+
+}
diff --git a/src/Type/Php/DefinedConstantTypeSpecifyingExtension.php b/src/Type/Php/DefinedConstantTypeSpecifyingExtension.php
new file mode 100644
index 00000000..51193ea5
--- /dev/null
+++ b/src/Type/Php/DefinedConstantTypeSpecifyingExtension.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\MixedType;
+use function count;
+
+final class DefinedConstantTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(private ConstantHelper $constantHelper)
+	{
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return $functionReflection->getName() === 'defined'
+			&& count($node->getArgs()) >= 1
+			&& $context->true();
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		$constantName = $scope->getType($node->getArgs()[0]->value);
+		if (
+			!$constantName instanceof ConstantStringType
+			|| $constantName->getValue() === ''
+		) {
+			return new SpecifiedTypes([], []);
+		}
+
+		$expr = $this->constantHelper->createExprFromConstantName($constantName->getValue());
+		if ($expr === null) {
+			return new SpecifiedTypes([], []);
+		}
+
+		return $this->typeSpecifier->create(
+			$expr,
+			new MixedType(),
+			$context,
+			$scope,
+		);
+	}
+
+}
diff --git a/src/Type/Php/DioStatDynamicFunctionReturnTypeExtension.php b/src/Type/Php/DioStatDynamicFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..460ad4d7
--- /dev/null
+++ b/src/Type/Php/DioStatDynamicFunctionReturnTypeExtension.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+final class DioStatDynamicFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'dio_stat';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$valueType = new IntegerType();
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+		$keys = [
+			'device',
+			'inode',
+			'mode',
+			'nlink',
+			'uid',
+			'gid',
+			'device_type',
+			'size',
+			'blocksize',
+			'blocks',
+			'atime',
+			'mtime',
+			'ctime',
+		];
+
+		foreach ($keys as $key) {
+			$builder->setOffsetValueType(new ConstantStringType($key), $valueType);
+		}
+
+		return TypeCombinator::addNull($builder->getArray());
+	}
+
+}
diff --git a/src/Type/Php/DsMapDynamicMethodThrowTypeExtension.php b/src/Type/Php/DsMapDynamicMethodThrowTypeExtension.php
new file mode 100644
index 00000000..c0fee7da
--- /dev/null
+++ b/src/Type/Php/DsMapDynamicMethodThrowTypeExtension.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodThrowTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\VoidType;
+use function count;
+
+final class DsMapDynamicMethodThrowTypeExtension implements DynamicMethodThrowTypeExtension
+{
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getDeclaringClass()->getName() === 'Ds\Map'
+			&& ($methodReflection->getName() === 'get' || $methodReflection->getName() === 'remove');
+	}
+
+	public function getThrowTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->args) < 2) {
+			return $methodReflection->getThrowType();
+		}
+
+		return new VoidType();
+	}
+
+}
diff --git a/src/Type/Php/DsMapDynamicReturnTypeExtension.php b/src/Type/Php/DsMapDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..37884e00
--- /dev/null
+++ b/src/Type/Php/DsMapDynamicReturnTypeExtension.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeWithClassName;
+use function count;
+use function in_array;
+
+final class DsMapDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return 'Ds\Map';
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return in_array($methodReflection->getName(), ['get', 'remove'], true);
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		$argsCount = count($methodCall->getArgs());
+		if ($argsCount > 1) {
+			return null;
+		}
+
+		if ($argsCount === 0) {
+			return null;
+		}
+
+		$mapType = $scope->getType($methodCall->var);
+		if (!$mapType instanceof TypeWithClassName) {
+			return null;
+		}
+
+		$mapAncestor = $mapType->getAncestorWithClassName('Ds\Map');
+		if ($mapAncestor === null) {
+			return null;
+		}
+
+		$mapAncestorClass = $mapAncestor->getClassReflection();
+		if ($mapAncestorClass === null) {
+			return null;
+		}
+
+		$valueType = $mapAncestorClass->getActiveTemplateTypeMap()->getType('TValue');
+		if ($valueType === null) {
+			return null;
+		}
+
+		return $valueType;
+	}
+
+}
diff --git a/src/Type/Php/ExplodeFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ExplodeFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..616e8913
--- /dev/null
+++ b/src/Type/Php/ExplodeFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,95 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function count;
+
+final class ExplodeFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'explode';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return null;
+		}
+
+		$delimiterType = $scope->getType($args[0]->value);
+		$isEmptyString = (new ConstantStringType(''))->isSuperTypeOf($delimiterType);
+		if ($isEmptyString->yes()) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+			return new ConstantBooleanType(false);
+		}
+
+		$stringType = $scope->getType($args[1]->value);
+		$accessory = [];
+		if ($stringType->isLowercaseString()->yes()) {
+			$accessory[] = new AccessoryLowercaseStringType();
+		}
+		if ($stringType->isUppercaseString()->yes()) {
+			$accessory[] = new AccessoryUppercaseStringType();
+		}
+		if (count($accessory) > 0) {
+			$accessory[] = new StringType();
+			$returnValueType = new IntersectionType($accessory);
+		} else {
+			$returnValueType = new StringType();
+		}
+
+		$returnType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $returnValueType), new AccessoryArrayListType());
+		if (
+			!isset($args[2])
+			|| IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($scope->getType($args[2]->value))->yes()
+		) {
+			$returnType = TypeCombinator::intersect($returnType, new NonEmptyArrayType());
+		}
+
+		if (!$this->phpVersion->throwsValueErrorForInternalFunctions() && $isEmptyString->maybe()) {
+			$returnType = TypeCombinator::union($returnType, new ConstantBooleanType(false));
+		}
+
+		if ($delimiterType instanceof MixedType) {
+			$returnType = TypeUtils::toBenevolentUnion($returnType);
+		}
+
+		return $returnType;
+	}
+
+}
diff --git a/src/Type/Php/FilterFunctionReturnTypeHelper.php b/src/Type/Php/FilterFunctionReturnTypeHelper.php
new file mode 100644
index 00000000..bdf194bf
--- /dev/null
+++ b/src/Type/Php/FilterFunctionReturnTypeHelper.php
@@ -0,0 +1,451 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function array_merge;
+use function hexdec;
+use function is_int;
+use function octdec;
+use function preg_match;
+use function sprintf;
+
+final class FilterFunctionReturnTypeHelper
+{
+
+	/** All validation filters match 0x100. */
+	private const VALIDATION_FILTER_BITMASK = 0x100;
+
+	private ConstantStringType $flagsString;
+
+	/** @var array<int, Type>|null */
+	private ?array $filterTypeMap = null;
+
+	/** @var array<int, list<string>>|null */
+	private ?array $filterTypeOptions = null;
+
+	private ?Type $supportedFilterInputTypes = null;
+
+	public function __construct(private ReflectionProvider $reflectionProvider, private PhpVersion $phpVersion)
+	{
+		$this->flagsString = new ConstantStringType('flags');
+	}
+
+	public function getOffsetValueType(Type $inputType, Type $offsetType, ?Type $filterType, ?Type $flagsType): Type
+	{
+		$inexistentOffsetType = $this->hasFlag($this->getConstant('FILTER_NULL_ON_FAILURE'), $flagsType)
+			? new ConstantBooleanType(false)
+			: new NullType();
+
+		$hasOffsetValueType = $inputType->hasOffsetValueType($offsetType);
+		if ($hasOffsetValueType->no()) {
+			return $inexistentOffsetType;
+		}
+
+		$filteredType = $this->getType($inputType->getOffsetValueType($offsetType), $filterType, $flagsType);
+
+		return $hasOffsetValueType->maybe()
+			? TypeCombinator::union($filteredType, $inexistentOffsetType)
+			: $filteredType;
+	}
+
+	public function getInputType(Type $typeType, Type $varNameType, ?Type $filterType, ?Type $flagsType): Type
+	{
+		$this->supportedFilterInputTypes ??= TypeCombinator::union(
+			$this->reflectionProvider->getConstant(new Node\Name('INPUT_GET'), null)->getValueType(),
+			$this->reflectionProvider->getConstant(new Node\Name('INPUT_POST'), null)->getValueType(),
+			$this->reflectionProvider->getConstant(new Node\Name('INPUT_COOKIE'), null)->getValueType(),
+			$this->reflectionProvider->getConstant(new Node\Name('INPUT_SERVER'), null)->getValueType(),
+			$this->reflectionProvider->getConstant(new Node\Name('INPUT_ENV'), null)->getValueType(),
+		);
+
+		if (!$typeType->isInteger()->yes() || $this->supportedFilterInputTypes->isSuperTypeOf($typeType)->no()) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			// Using a null as input mimics pre PHP 8 behaviour where filter_input
+			// would return the same as if the offset does not exist
+			$inputType = new NullType();
+		} else {
+			// Pragmatical solution since global expressions are not passed through the scope for performance reasons
+			// See https://github.com/phpstan/phpstan-src/pull/2012 for details
+			$inputType = new ArrayType(new StringType(), new MixedType());
+		}
+
+		return $this->getOffsetValueType($inputType, $varNameType, $filterType, $flagsType);
+	}
+
+	public function getType(Type $inputType, ?Type $filterType, ?Type $flagsType): Type
+	{
+		$mixedType = new MixedType();
+
+		if ($filterType === null) {
+			$filterValue = $this->getConstant('FILTER_DEFAULT');
+		} else {
+			if (!$filterType instanceof ConstantIntegerType) {
+				return $mixedType;
+			}
+			$filterValue = $filterType->getValue();
+		}
+
+		if ($flagsType === null) {
+			$flagsType = new ConstantIntegerType(0);
+		}
+
+		$hasOptions = $this->hasOptions($flagsType);
+		$options = $hasOptions->yes() ? $this->getOptions($flagsType, $filterValue) : [];
+
+		$defaultType = $options['default'] ?? ($this->hasFlag($this->getConstant('FILTER_NULL_ON_FAILURE'), $flagsType)
+			? new NullType()
+			: new ConstantBooleanType(false));
+
+		$inputIsArray = $inputType->isArray();
+		$hasRequireArrayFlag = $this->hasFlag($this->getConstant('FILTER_REQUIRE_ARRAY'), $flagsType);
+		if ($inputIsArray->no() && $hasRequireArrayFlag) {
+			return $defaultType;
+		}
+
+		$hasForceArrayFlag = $this->hasFlag($this->getConstant('FILTER_FORCE_ARRAY'), $flagsType);
+		if ($inputIsArray->yes() && ($hasRequireArrayFlag || $hasForceArrayFlag)) {
+			$inputArrayKeyType = $inputType->getIterableKeyType();
+			$inputType = $inputType->getIterableValueType();
+		}
+
+		if ($inputType->isScalar()->no() && $inputType->isNull()->no()) {
+			return $defaultType;
+		}
+
+		$exactType = $this->determineExactType($inputType, $filterValue, $defaultType, $flagsType);
+		$type = $exactType ?? $this->getFilterTypeMap()[$filterValue] ?? $mixedType;
+		$type = $this->applyRangeOptions($type, $options, $defaultType);
+
+		if ($inputType->isNonEmptyString()->yes()
+			&& $type->isString()->yes()
+			&& !$this->canStringBeSanitized($filterValue, $flagsType)) {
+			$accessory = new AccessoryNonEmptyStringType();
+			if ($inputType->isNonFalsyString()->yes()) {
+				$accessory = new AccessoryNonFalsyStringType();
+			}
+			$type = TypeCombinator::intersect($type, $accessory);
+		}
+
+		if ($hasRequireArrayFlag) {
+			$type = new ArrayType($inputArrayKeyType ?? $mixedType, $type);
+		}
+
+		if ($exactType === null || $hasOptions->maybe() || (!$inputType->equals($type) && $inputType->isSuperTypeOf($type)->yes())) {
+			if ($defaultType->isSuperTypeOf($type)->no()) {
+				$type = TypeCombinator::union($type, $defaultType);
+			}
+		}
+
+		if (!$hasRequireArrayFlag && $hasForceArrayFlag) {
+			return new ArrayType($inputArrayKeyType ?? $mixedType, $type);
+		}
+
+		return $type;
+	}
+
+	/**
+	 * @return array<int, Type>
+	 */
+	private function getFilterTypeMap(): array
+	{
+		if ($this->filterTypeMap !== null) {
+			return $this->filterTypeMap;
+		}
+
+		$booleanType = new BooleanType();
+		$floatType = new FloatType();
+		$intType = new IntegerType();
+		$stringType = new StringType();
+		$nonFalsyStringType = TypeCombinator::intersect($stringType, new AccessoryNonFalsyStringType());
+
+		$this->filterTypeMap = [
+			$this->getConstant('FILTER_UNSAFE_RAW') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_EMAIL') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_ENCODED') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_NUMBER_FLOAT') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_NUMBER_INT') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_SPECIAL_CHARS') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_STRING') => $stringType,
+			$this->getConstant('FILTER_SANITIZE_URL') => $stringType,
+			$this->getConstant('FILTER_VALIDATE_BOOLEAN') => $booleanType,
+			$this->getConstant('FILTER_VALIDATE_DOMAIN') => $stringType,
+			$this->getConstant('FILTER_VALIDATE_EMAIL') => $nonFalsyStringType,
+			$this->getConstant('FILTER_VALIDATE_FLOAT') => $floatType,
+			$this->getConstant('FILTER_VALIDATE_INT') => $intType,
+			$this->getConstant('FILTER_VALIDATE_IP') => $nonFalsyStringType,
+			$this->getConstant('FILTER_VALIDATE_MAC') => $nonFalsyStringType,
+			$this->getConstant('FILTER_VALIDATE_REGEXP') => $stringType,
+			$this->getConstant('FILTER_VALIDATE_URL') => $nonFalsyStringType,
+		];
+
+		if ($this->reflectionProvider->hasConstant(new Node\Name('FILTER_SANITIZE_MAGIC_QUOTES'), null)) {
+			$this->filterTypeMap[$this->getConstant('FILTER_SANITIZE_MAGIC_QUOTES')] = $stringType;
+		}
+
+		if ($this->reflectionProvider->hasConstant(new Node\Name('FILTER_SANITIZE_ADD_SLASHES'), null)) {
+			$this->filterTypeMap[$this->getConstant('FILTER_SANITIZE_ADD_SLASHES')] = $stringType;
+		}
+
+		return $this->filterTypeMap;
+	}
+
+	/**
+	 * @return array<int, list<string>>
+	 */
+	private function getFilterTypeOptions(): array
+	{
+		if ($this->filterTypeOptions !== null) {
+			return $this->filterTypeOptions;
+		}
+
+		$this->filterTypeOptions = [
+			$this->getConstant('FILTER_VALIDATE_INT') => ['min_range', 'max_range'],
+			// PHPStan does not yet support FloatRangeType
+			// $this->getConstant('FILTER_VALIDATE_FLOAT') => ['min_range', 'max_range'],
+		];
+
+		return $this->filterTypeOptions;
+	}
+
+	/**
+	 * @param non-empty-string $constantName
+	 */
+	private function getConstant(string $constantName): int
+	{
+		$constant = $this->reflectionProvider->getConstant(new Node\Name($constantName), null);
+		$valueType = $constant->getValueType();
+		if (!$valueType instanceof ConstantIntegerType) {
+			throw new ShouldNotHappenException(sprintf('Constant %s does not have integer type.', $constantName));
+		}
+
+		return $valueType->getValue();
+	}
+
+	private function determineExactType(Type $in, int $filterValue, Type $defaultType, ?Type $flagsType): ?Type
+	{
+		if ($filterValue === $this->getConstant('FILTER_VALIDATE_BOOLEAN')) {
+			if ($in->isBoolean()->yes()) {
+				return $in;
+			}
+
+			if ($in->isNull()->yes()) {
+				return $defaultType;
+			}
+		}
+
+		if ($filterValue === $this->getConstant('FILTER_VALIDATE_FLOAT')) {
+			if ($in->isFloat()->yes()) {
+				return $in;
+			}
+
+			if ($in->isInteger()->yes()) {
+				return $in->toFloat();
+			}
+
+			if ($in->isTrue()->yes()) {
+				return new ConstantFloatType(1);
+			}
+
+			if ($in->isFalse()->yes() || $in->isNull()->yes()) {
+				return $defaultType;
+			}
+		}
+
+		if ($filterValue === $this->getConstant('FILTER_VALIDATE_INT')) {
+			if ($in->isInteger()->yes()) {
+				return $in;
+			}
+
+			if ($in->isTrue()->yes()) {
+				return new ConstantIntegerType(1);
+			}
+
+			if ($in->isFalse()->yes() || $in->isNull()->yes()) {
+				return $defaultType;
+			}
+
+			if ($in instanceof ConstantFloatType) {
+				return $in->getValue() - (int) $in->getValue() === 0.0
+					? $in->toInteger()
+					: $defaultType;
+			}
+
+			if ($in instanceof ConstantStringType) {
+				$value = $in->getValue();
+				$allowOctal = $this->hasFlag($this->getConstant('FILTER_FLAG_ALLOW_OCTAL'), $flagsType);
+				$allowHex = $this->hasFlag($this->getConstant('FILTER_FLAG_ALLOW_HEX'), $flagsType);
+
+				if ($allowOctal && preg_match('/\A0[oO][0-7]+\z/', $value) === 1) {
+					$octalValue = octdec($value);
+					return is_int($octalValue) ? new ConstantIntegerType($octalValue) : $defaultType;
+				}
+
+				if ($allowHex && preg_match('/\A0[xX][0-9A-Fa-f]+\z/', $value) === 1) {
+					$hexValue = hexdec($value);
+					return is_int($hexValue) ? new ConstantIntegerType($hexValue) : $defaultType;
+				}
+
+				return preg_match('/\A[+-]?(?:0|[1-9][0-9]*)\z/', $value) === 1 ? $in->toInteger() : $defaultType;
+			}
+		}
+
+		if ($filterValue === $this->getConstant('FILTER_DEFAULT')) {
+			if (!$this->canStringBeSanitized($filterValue, $flagsType) && $in->isString()->yes()) {
+				return $in;
+			}
+
+			if ($in->isBoolean()->yes() || $in->isFloat()->yes() || $in->isInteger()->yes() || $in->isNull()->yes()) {
+				return $in->toString();
+			}
+		}
+
+		return null;
+	}
+
+	/** @param array<string, ?Type> $typeOptions */
+	private function applyRangeOptions(Type $type, array $typeOptions, Type $defaultType): Type
+	{
+		if (!$type->isInteger()->yes()) {
+			return $type;
+		}
+
+		$range = [];
+		if (isset($typeOptions['min_range'])) {
+			if ($typeOptions['min_range'] instanceof ConstantScalarType) {
+				$range['min'] = (int) $typeOptions['min_range']->getValue();
+			} elseif ($typeOptions['min_range'] instanceof IntegerRangeType) {
+				$range['min'] = $typeOptions['min_range']->getMin();
+			} else {
+				$range['min'] = null;
+			}
+		}
+		if (isset($typeOptions['max_range'])) {
+			if ($typeOptions['max_range'] instanceof ConstantScalarType) {
+				$range['max'] = (int) $typeOptions['max_range']->getValue();
+			} elseif ($typeOptions['max_range'] instanceof IntegerRangeType) {
+				$range['max'] = $typeOptions['max_range']->getMax();
+			} else {
+				$range['max'] = null;
+			}
+		}
+
+		if (array_key_exists('min', $range) || array_key_exists('max', $range)) {
+			$min = $range['min'] ?? null;
+			$max = $range['max'] ?? null;
+			$rangeType = IntegerRangeType::fromInterval($min, $max);
+			$rangeTypeIsSuperType = $rangeType->isSuperTypeOf($type);
+
+			if ($rangeTypeIsSuperType->no()) {
+				// e.g. if 9 is filtered with a range of int<17, 19>
+				return $defaultType;
+			}
+
+			if ($rangeTypeIsSuperType->yes() && !$rangeType->equals($type)) {
+				// e.g. if 18 or int<18, 19> are filtered with a range of int<17, 19>
+				return $type;
+			}
+
+			// Open ranges on either side means that the input is potentially not part of the range
+			return $min === null || $max === null ? TypeCombinator::union($rangeType, $defaultType) : $rangeType;
+		}
+
+		return $type;
+	}
+
+	private function hasOptions(Type $flagsType): TrinaryLogic
+	{
+		return $flagsType->isArray()
+			->and($flagsType->hasOffsetValueType(new ConstantStringType('options')));
+	}
+
+	/** @return array<string, ?Type> */
+	private function getOptions(Type $flagsType, int $filterValue): array
+	{
+		$options = [];
+
+		$optionsType = $flagsType->getOffsetValueType(new ConstantStringType('options'));
+		if (!$optionsType->isConstantArray()->yes()) {
+			return $options;
+		}
+
+		$optionNames = array_merge(['default'], $this->getFilterTypeOptions()[$filterValue] ?? []);
+		foreach ($optionNames as $optionName) {
+			$optionalNameType = new ConstantStringType($optionName);
+			if (!$optionsType->hasOffsetValueType($optionalNameType)->yes()) {
+				$options[$optionName] = null;
+				continue;
+			}
+
+			$options[$optionName] = $optionsType->getOffsetValueType($optionalNameType);
+		}
+
+		return $options;
+	}
+
+	private function hasFlag(int $flag, ?Type $flagsType): bool
+	{
+		if ($flagsType === null) {
+			return false;
+		}
+
+		$type = $this->getFlagsValue($flagsType);
+
+		return $type instanceof ConstantIntegerType && ($type->getValue() & $flag) === $flag;
+	}
+
+	private function getFlagsValue(Type $exprType): Type
+	{
+		if (!$exprType->isConstantArray()->yes()) {
+			return $exprType;
+		}
+
+		return $exprType->getOffsetValueType($this->flagsString);
+	}
+
+	private function canStringBeSanitized(int $filterValue, ?Type $flagsType): bool
+	{
+		// If it is a validation filter, the string will not be changed
+		if (($filterValue & self::VALIDATION_FILTER_BITMASK) !== 0) {
+			return false;
+		}
+
+		// FILTER_DEFAULT will not sanitize, unless it has FILTER_FLAG_STRIP_LOW,
+		// FILTER_FLAG_STRIP_HIGH, or FILTER_FLAG_STRIP_BACKTICK
+		if ($filterValue === $this->getConstant('FILTER_DEFAULT')) {
+			return $this->hasFlag($this->getConstant('FILTER_FLAG_STRIP_LOW'), $flagsType)
+				|| $this->hasFlag($this->getConstant('FILTER_FLAG_STRIP_HIGH'), $flagsType)
+				|| $this->hasFlag($this->getConstant('FILTER_FLAG_STRIP_BACKTICK'), $flagsType);
+		}
+
+		return true;
+	}
+
+}
diff --git a/src/Type/Php/FilterInputDynamicReturnTypeExtension.php b/src/Type/Php/FilterInputDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..ab2e62bc
--- /dev/null
+++ b/src/Type/Php/FilterInputDynamicReturnTypeExtension.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+
+final class FilterInputDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private FilterFunctionReturnTypeHelper $filterFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'filter_input';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		return $this->filterFunctionReturnTypeHelper->getInputType(
+			$scope->getType($functionCall->getArgs()[0]->value),
+			$scope->getType($functionCall->getArgs()[1]->value),
+			isset($functionCall->getArgs()[2]) ? $scope->getType($functionCall->getArgs()[2]->value) : null,
+			isset($functionCall->getArgs()[3]) ? $scope->getType($functionCall->getArgs()[3]->value) : null,
+		);
+	}
+
+}
diff --git a/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php b/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..ee4fb12e
--- /dev/null
+++ b/src/Type/Php/FilterVarArrayDynamicReturnTypeExtension.php
@@ -0,0 +1,199 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_combine;
+use function array_fill_keys;
+use function array_map;
+use function count;
+use function in_array;
+use function strtolower;
+
+final class FilterVarArrayDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private FilterFunctionReturnTypeHelper $filterFunctionReturnTypeHelper, private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array(strtolower($functionReflection->getName()), ['filter_var_array', 'filter_input_array'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$functionName = strtolower($functionReflection->getName());
+		$inputArgType = $scope->getType($functionCall->getArgs()[0]->value);
+		$inputConstantArrayType = null;
+		if ($functionName === 'filter_var_array') {
+			if ($inputArgType->isArray()->no()) {
+				return new NeverType();
+			}
+
+			$inputConstantArrayType = $inputArgType->getConstantArrays()[0] ?? null;
+		} elseif ($functionName === 'filter_input_array') {
+			$supportedTypes = TypeCombinator::union(
+				$this->reflectionProvider->getConstant(new Node\Name('INPUT_GET'), null)->getValueType(),
+				$this->reflectionProvider->getConstant(new Node\Name('INPUT_POST'), null)->getValueType(),
+				$this->reflectionProvider->getConstant(new Node\Name('INPUT_COOKIE'), null)->getValueType(),
+				$this->reflectionProvider->getConstant(new Node\Name('INPUT_SERVER'), null)->getValueType(),
+				$this->reflectionProvider->getConstant(new Node\Name('INPUT_ENV'), null)->getValueType(),
+			);
+
+			if (!$inputArgType->isInteger()->yes() || $supportedTypes->isSuperTypeOf($inputArgType)->no()) {
+				return null;
+			}
+
+			// Pragmatical solution since global expressions are not passed through the scope for performance reasons
+			// See https://github.com/phpstan/phpstan-src/pull/2012 for details
+			$inputArgType = new ArrayType(new StringType(), new MixedType());
+		}
+
+		$filterArgType = $scope->getType($functionCall->getArgs()[1]->value);
+		$filterConstantArrayType = $filterArgType->getConstantArrays()[0] ?? null;
+		$addEmptyType = isset($functionCall->getArgs()[2]) ? $scope->getType($functionCall->getArgs()[2]->value) : null;
+		$addEmpty = $addEmptyType === null || $addEmptyType->isTrue()->yes();
+
+		$valueTypesBuilder = ConstantArrayTypeBuilder::createEmpty();
+
+		if ($filterArgType instanceof ConstantIntegerType) {
+			if ($inputConstantArrayType === null) {
+				$isList = $inputArgType->isList()->yes();
+				$valueType = $this->filterFunctionReturnTypeHelper->getType(
+					$inputArgType->getIterableValueType(),
+					$filterArgType,
+					null,
+				);
+				$arrayType = new ArrayType($inputArgType->getIterableKeyType(), $valueType);
+
+				return $isList ? TypeCombinator::intersect($arrayType, new AccessoryArrayListType()) : $arrayType;
+			}
+
+			// Override $add_empty option
+			$addEmpty = false;
+
+			$keysType = $inputConstantArrayType;
+			$inputKeysList = array_map(static fn ($type) => $type->getValue(), $inputConstantArrayType->getKeyTypes());
+			$filterTypesMap = array_fill_keys($inputKeysList, $filterArgType);
+			$inputTypesMap = array_combine($inputKeysList, $inputConstantArrayType->getValueTypes());
+			$optionalKeys = [];
+			foreach ($inputConstantArrayType->getOptionalKeys() as $index) {
+				if (!isset($inputKeysList[$index])) {
+					continue;
+				}
+
+				$optionalKeys[] = $inputKeysList[$index];
+			}
+		} elseif ($filterConstantArrayType === null) {
+			if ($inputConstantArrayType === null) {
+				$isList = $inputArgType->isList()->yes();
+				$valueType = $this->filterFunctionReturnTypeHelper->getType($inputArgType, $filterArgType, null);
+
+				$arrayType = new ArrayType(
+					$inputArgType->getIterableKeyType(),
+					$addEmpty ? TypeCombinator::addNull($valueType) : $valueType,
+				);
+
+				return $isList ? TypeCombinator::intersect($arrayType, new AccessoryArrayListType()) : $arrayType;
+			}
+
+			return null;
+		} else {
+			$keysType = $filterConstantArrayType;
+			$filterKeyTypes = $filterConstantArrayType->getKeyTypes();
+			$filterKeysList = array_map(static fn ($type) => $type->getValue(), $filterKeyTypes);
+			$filterTypesMap = array_combine($filterKeysList, $keysType->getValueTypes());
+
+			if ($inputConstantArrayType !== null) {
+				$inputKeysList = array_map(static fn ($type) => $type->getValue(), $inputConstantArrayType->getKeyTypes());
+				$inputTypesMap = array_combine($inputKeysList, $inputConstantArrayType->getValueTypes());
+
+				$optionalKeys = [];
+				foreach ($inputConstantArrayType->getOptionalKeys() as $index) {
+					if (!isset($inputKeysList[$index])) {
+						continue;
+					}
+
+					$optionalKeys[] = $inputKeysList[$index];
+				}
+			} else {
+				$optionalKeys = $filterKeysList;
+				$inputTypesMap = array_fill_keys($optionalKeys, $inputArgType->getIterableValueType());
+			}
+		}
+
+		foreach ($keysType->getKeyTypes() as $keyType) {
+			$optional = false;
+			$key = $keyType->getValue();
+			$inputType = $inputTypesMap[$key] ?? null;
+			if ($inputType === null) {
+				if ($addEmpty) {
+					$valueTypesBuilder->setOffsetValueType($keyType, new NullType());
+				}
+
+				continue;
+			}
+
+			[$filterType, $flagsType] = $this->fetchFilter($filterTypesMap[$key] ?? new MixedType());
+			$valueType = $this->filterFunctionReturnTypeHelper->getType($inputType, $filterType, $flagsType);
+
+			if (in_array($key, $optionalKeys, true)) {
+				if ($addEmpty) {
+					$valueType = TypeCombinator::addNull($valueType);
+				} else {
+					$optional = true;
+				}
+			}
+
+			$valueTypesBuilder->setOffsetValueType($keyType, $valueType, $optional);
+		}
+
+		return $valueTypesBuilder->getArray();
+	}
+
+	/** @return array{?Type, ?Type} */
+	public function fetchFilter(Type $type): array
+	{
+		if (!$type->isArray()->yes()) {
+			return [$type, null];
+		}
+
+		$filterKey = new ConstantStringType('filter');
+		if (!$type->hasOffsetValueType($filterKey)->yes()) {
+			return [$type, null];
+		}
+
+		$filterOffsetType = $type->getOffsetValueType($filterKey);
+		$filterType = null;
+
+		if (count($filterOffsetType->getConstantScalarTypes()) > 0) {
+			$filterType = TypeCombinator::union(...$filterOffsetType->getConstantScalarTypes());
+		}
+
+		return [$filterType, $type];
+	}
+
+}
diff --git a/src/Type/Php/FilterVarDynamicReturnTypeExtension.php b/src/Type/Php/FilterVarDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..b60cb110
--- /dev/null
+++ b/src/Type/Php/FilterVarDynamicReturnTypeExtension.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+use function strtolower;
+
+final class FilterVarDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private FilterFunctionReturnTypeHelper $filterFunctionReturnTypeHelper)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'filter_var';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$inputType = $scope->getType($functionCall->getArgs()[0]->value);
+		$filterType = isset($functionCall->getArgs()[1]) ? $scope->getType($functionCall->getArgs()[1]->value) : null;
+		$flagsType = isset($functionCall->getArgs()[2]) ? $scope->getType($functionCall->getArgs()[2]->value) : null;
+
+		return $this->filterFunctionReturnTypeHelper->getType($inputType, $filterType, $flagsType);
+	}
+
+}
diff --git a/src/Type/Php/FunctionExistsFunctionTypeSpecifyingExtension.php b/src/Type/Php/FunctionExistsFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..367fd4e6
--- /dev/null
+++ b/src/Type/Php/FunctionExistsFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,63 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name\FullyQualified;
+use PhpParser\Node\Scalar\String_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function ltrim;
+
+final class FunctionExistsFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return $functionReflection->getName() === 'function_exists' && isset($node->getArgs()[0]) && $context->true();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$argType = $scope->getType($node->getArgs()[0]->value);
+		if ($argType instanceof ConstantStringType) {
+			return $this->typeSpecifier->create(
+				new FuncCall(new FullyQualified('function_exists'), [
+					new Arg(new String_(ltrim($argType->getValue(), '\\'))),
+				]),
+				new ConstantBooleanType(true),
+				$context,
+				$scope,
+			);
+		}
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			new CallableType(),
+			$context,
+			$scope,
+		);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/GetCalledClassDynamicReturnTypeExtension.php b/src/Type/Php/GetCalledClassDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..2109a411
--- /dev/null
+++ b/src/Type/Php/GetCalledClassDynamicReturnTypeExtension.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+
+final class GetCalledClassDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'get_called_class';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		if ($scope->isInClass()) {
+			return $scope->getType(new ClassConstFetch(new Name('static'), 'class'));
+		}
+		return new ConstantBooleanType(false);
+	}
+
+}
diff --git a/src/Type/Php/GetClassDynamicReturnTypeExtension.php b/src/Type/Php/GetClassDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..fb01eca9
--- /dev/null
+++ b/src/Type/Php/GetClassDynamicReturnTypeExtension.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\StaticType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class GetClassDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'get_class';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$args = $functionCall->getArgs();
+
+		if (count($args) === 0) {
+			if ($scope->isInTrait()) {
+				return new ClassStringType();
+			}
+
+			if ($scope->isInClass()) {
+				return new ConstantStringType($scope->getClassReflection()->getName(), true);
+			}
+
+			return new ConstantBooleanType(false);
+		}
+
+		$argType = $scope->getType($args[0]->value);
+
+		if ($scope->isInTrait() && TypeUtils::findThisType($argType) !== null) {
+			return new ClassStringType();
+		}
+
+		return TypeTraverser::map(
+			$argType,
+			static function (Type $type, callable $traverse): Type {
+				if ($type instanceof UnionType || $type instanceof IntersectionType) {
+					return $traverse($type);
+				}
+
+				if ($type instanceof EnumCaseObjectType) {
+					return new GenericClassStringType(new ObjectType($type->getClassName()));
+				}
+
+				$objectClassNames = $type->getObjectClassNames();
+				if ($type instanceof TemplateType && $objectClassNames === []) {
+					if ($type instanceof ObjectWithoutClassType) {
+						return new GenericClassStringType($type);
+					}
+
+					return new UnionType([
+						new GenericClassStringType($type),
+						new ConstantBooleanType(false),
+					]);
+				} elseif ($type instanceof MixedType) {
+					return new UnionType([
+						new ClassStringType(),
+						new ConstantBooleanType(false),
+					]);
+				} elseif ($type instanceof StaticType) {
+					return new GenericClassStringType($type->getStaticObjectType());
+				} elseif ($objectClassNames !== []) {
+					return new GenericClassStringType($type);
+				} elseif ($type instanceof ObjectWithoutClassType) {
+					return new ClassStringType();
+				}
+
+				return new ConstantBooleanType(false);
+			},
+		);
+	}
+
+}
diff --git a/src/Type/Php/GetDebugTypeFunctionReturnTypeExtension.php b/src/Type/Php/GetDebugTypeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..7feb6649
--- /dev/null
+++ b/src/Type/Php/GetDebugTypeFunctionReturnTypeExtension.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use Closure;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function array_key_first;
+use function array_map;
+use function count;
+
+final class GetDebugTypeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'get_debug_type';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($argType instanceof UnionType) {
+			return new UnionType(array_map(Closure::fromCallable([self::class, 'resolveOneType']), $argType->getTypes()));
+		}
+		return self::resolveOneType($argType);
+	}
+
+	/**
+	 * @see https://www.php.net/manual/en/function.get-debug-type.php#refsect1-function.get-debug-type-returnvalues
+	 * @see https://github.com/php/php-src/commit/ef0e4478c51540510b67f7781ad240f5e0592ee4
+	 */
+	private static function resolveOneType(Type $type): Type
+	{
+		if ($type->isNull()->yes()) {
+			return new ConstantStringType('null');
+		}
+		if ($type->isBoolean()->yes()) {
+			return new ConstantStringType('bool');
+		}
+		if ($type->isInteger()->yes()) {
+			return new ConstantStringType('int');
+		}
+		if ($type->isFloat()->yes()) {
+			return new ConstantStringType('float');
+		}
+		if ($type->isString()->yes()) {
+			return new ConstantStringType('string');
+		}
+		if ($type->isArray()->yes()) {
+			return new ConstantStringType('array');
+		}
+
+		// "resources" type+state is skipped since we cannot infer the state
+
+		if ($type->isObject()->yes()) {
+			$reflections = $type->getObjectClassReflections();
+			$types = [];
+			foreach ($reflections as $reflection) {
+				// if the class is not final, the actual returned string might be of a child class
+				if ($reflection->isFinal() && !$reflection->isAnonymous()) {
+					$types[] = new ConstantStringType($reflection->getName());
+				}
+
+				if ($reflection->isAnonymous()) { // phpcs:ignore
+					$parentClass = $reflection->getParentClass();
+					$implementedInterfaces = $reflection->getImmediateInterfaces();
+					if ($parentClass !== null) {
+						$types[] = new ConstantStringType($parentClass->getName() . '@anonymous');
+					} elseif ($implementedInterfaces !== []) {
+						$firstInterface = $implementedInterfaces[array_key_first($implementedInterfaces)];
+						$types[] = new ConstantStringType($firstInterface->getName() . '@anonymous');
+					} else {
+						$types[] = new ConstantStringType('class@anonymous');
+					}
+				}
+			}
+
+			switch (count($types)) {
+				case 0:
+					return new StringType();
+				case 1:
+					return $types[0];
+				default:
+					return new UnionType($types);
+			}
+		}
+
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/GetDefinedVarsFunctionReturnTypeExtension.php b/src/Type/Php/GetDefinedVarsFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..27eef977
--- /dev/null
+++ b/src/Type/Php/GetDefinedVarsFunctionReturnTypeExtension.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+
+final class GetDefinedVarsFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'get_defined_vars';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		if ($scope->canAnyVariableExist()) {
+			return new ArrayType(
+				new StringType(),
+				new MixedType(),
+			);
+		}
+
+		$typeBuilder = ConstantArrayTypeBuilder::createEmpty();
+
+		foreach ($scope->getDefinedVariables() as $variable) {
+			$typeBuilder->setOffsetValueType(new ConstantStringType($variable), $scope->getVariableType($variable), false);
+		}
+
+		foreach ($scope->getMaybeDefinedVariables() as $variable) {
+			$typeBuilder->setOffsetValueType(new ConstantStringType($variable), $scope->getVariableType($variable), true);
+		}
+
+		return $typeBuilder->getArray();
+	}
+
+}
diff --git a/src/Type/Php/GetParentClassDynamicFunctionReturnTypeExtension.php b/src/Type/Php/GetParentClassDynamicFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..dc6d0983
--- /dev/null
+++ b/src/Type/Php/GetParentClassDynamicFunctionReturnTypeExtension.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use PHPStan\Type\UnionType;
+use function array_map;
+use function count;
+
+final class GetParentClassDynamicFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+	): bool
+	{
+		return $functionReflection->getName() === 'get_parent_class';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			if ($scope->isInTrait()) {
+				return null;
+			}
+			if ($scope->isInClass()) {
+				return $this->findParentClassType(
+					$scope->getClassReflection(),
+				);
+			}
+
+			return new ConstantBooleanType(false);
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($scope->isInTrait() && TypeUtils::findThisType($argType) !== null) {
+			return null;
+		}
+
+		$constantStrings = $argType->getConstantStrings();
+		if (count($constantStrings) > 0) {
+			return TypeCombinator::union(...array_map(fn (ConstantStringType $stringType): Type => $this->findParentClassNameType($stringType->getValue()), $constantStrings));
+		}
+
+		$classNames = $argType->getObjectClassNames();
+		if (count($classNames) > 0) {
+			return TypeCombinator::union(...array_map(fn (string $classNames): Type => $this->findParentClassNameType($classNames), $classNames));
+		}
+
+		return null;
+	}
+
+	private function findParentClassNameType(string $className): Type
+	{
+		if (!$this->reflectionProvider->hasClass($className)) {
+			return new UnionType([
+				new ClassStringType(),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		if ($classReflection->isInterface()) {
+			return new UnionType([
+				new ClassStringType(),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		return $this->findParentClassType($classReflection);
+	}
+
+	private function findParentClassType(
+		ClassReflection $classReflection,
+	): Type
+	{
+		$parentClass = $classReflection->getParentClass();
+		if ($parentClass === null) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new ConstantStringType($parentClass->getName(), true);
+	}
+
+}
diff --git a/src/Type/Php/GettimeofdayDynamicFunctionReturnTypeExtension.php b/src/Type/Php/GettimeofdayDynamicFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..32c7f163
--- /dev/null
+++ b/src/Type/Php/GettimeofdayDynamicFunctionReturnTypeExtension.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+
+final class GettimeofdayDynamicFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'gettimeofday';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$arrayType = new ConstantArrayType([
+			new ConstantStringType('sec'),
+			new ConstantStringType('usec'),
+			new ConstantStringType('minuteswest'),
+			new ConstantStringType('dsttime'),
+		], [
+			new IntegerType(),
+			new IntegerType(),
+			new IntegerType(),
+			new IntegerType(),
+		]);
+		$floatType = new FloatType();
+
+		if (!isset($functionCall->getArgs()[0])) {
+			return $arrayType;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isTrueType = $argType->isTrue();
+		$isFalseType = $argType->isFalse();
+		$compareTypes = $isTrueType->compareTo($isFalseType);
+		if ($compareTypes === $isTrueType) {
+			return $floatType;
+		}
+		if ($compareTypes === $isFalseType) {
+			return $arrayType;
+		}
+
+		if ($argType instanceof MixedType) {
+			return new BenevolentUnionType([$arrayType, $floatType]);
+		}
+
+		return new UnionType([$arrayType, $floatType]);
+	}
+
+}
diff --git a/src/Type/Php/GettypeFunctionReturnTypeExtension.php b/src/Type/Php/GettypeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..19179b47
--- /dev/null
+++ b/src/Type/Php/GettypeFunctionReturnTypeExtension.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\ResourceType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class GettypeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'gettype';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$valueType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		return TypeTraverser::map($valueType, static function (Type $valueType, callable $traverse): Type {
+			if ($valueType instanceof UnionType || $valueType instanceof IntersectionType) {
+				return $traverse($valueType);
+			}
+
+			if ($valueType->isString()->yes()) {
+				return new ConstantStringType('string');
+			}
+			if ($valueType->isArray()->yes()) {
+				return new ConstantStringType('array');
+			}
+
+			if ($valueType->isBoolean()->yes()) {
+				return new ConstantStringType('boolean');
+			}
+
+			$resource = new ResourceType();
+			if ($resource->isSuperTypeOf($valueType)->yes()) {
+				return new UnionType([
+					new ConstantStringType('resource'),
+					new ConstantStringType('resource (closed)'),
+				]);
+			}
+
+			if ($valueType->isInteger()->yes()) {
+				return new ConstantStringType('integer');
+			}
+
+			if ($valueType->isFloat()->yes()) {
+				// for historical reasons "double" is returned in case of a float, and not simply "float"
+				return new ConstantStringType('double');
+			}
+
+			if ($valueType->isNull()->yes()) {
+				return new ConstantStringType('NULL');
+			}
+
+			if ($valueType->isObject()->yes()) {
+				return new ConstantStringType('object');
+			}
+
+			return TypeCombinator::union(
+				new ConstantStringType('string'),
+				new ConstantStringType('array'),
+				new ConstantStringType('boolean'),
+				new ConstantStringType('resource'),
+				new ConstantStringType('resource (closed)'),
+				new ConstantStringType('integer'),
+				new ConstantStringType('double'),
+				new ConstantStringType('NULL'),
+				new ConstantStringType('object'),
+				new ConstantStringType('unknown type'),
+			);
+		});
+	}
+
+}
diff --git a/src/Type/Php/HashFunctionsReturnTypeExtension.php b/src/Type/Php/HashFunctionsReturnTypeExtension.php
new file mode 100644
index 00000000..697344d6
--- /dev/null
+++ b/src/Type/Php/HashFunctionsReturnTypeExtension.php
@@ -0,0 +1,158 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_map;
+use function count;
+use function hash_algos;
+use function in_array;
+use function is_bool;
+use function strtolower;
+
+final class HashFunctionsReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const SUPPORTED_FUNCTIONS = [
+		'hash' => [
+			'cryptographic' => false,
+			'possiblyFalse' => false,
+			'binary' => 2,
+		],
+		'hash_file' => [
+			'cryptographic' => false,
+			'possiblyFalse' => true,
+			'binary' => 2,
+		],
+		'hash_hkdf' => [
+			'cryptographic' => true,
+			'possiblyFalse' => false,
+			'binary' => true,
+		],
+		'hash_hmac' => [
+			'cryptographic' => true,
+			'possiblyFalse' => false,
+			'binary' => 3,
+		],
+		'hash_hmac_file' => [
+			'cryptographic' => true,
+			'possiblyFalse' => true,
+			'binary' => 3,
+		],
+		'hash_pbkdf2' => [
+			'cryptographic' => true,
+			'possiblyFalse' => false,
+			'binary' => 5,
+		],
+	];
+
+	private const NON_CRYPTOGRAPHIC_ALGORITHMS = [
+		'adler32',
+		'crc32',
+		'crc32b',
+		'crc32c',
+		'fnv132',
+		'fnv1a32',
+		'fnv164',
+		'fnv1a64',
+		'joaat',
+		'murmur3a',
+		'murmur3c',
+		'murmur3f',
+		'xxh32',
+		'xxh64',
+		'xxh3',
+		'xxh128',
+	];
+
+	/** @var array<int, non-empty-string> */
+	private array $hashAlgorithms;
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+		$this->hashAlgorithms = hash_algos();
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		$name = strtolower($functionReflection->getName());
+		return isset(self::SUPPORTED_FUNCTIONS[$name]);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$functionData = self::SUPPORTED_FUNCTIONS[strtolower($functionReflection->getName())];
+		if (is_bool($functionData['binary'])) {
+			$binaryType = new ConstantBooleanType($functionData['binary']);
+		} elseif (isset($functionCall->getArgs()[$functionData['binary']])) {
+			$binaryType = $scope->getType($functionCall->getArgs()[$functionData['binary']]->value);
+		} else {
+			$binaryType = new ConstantBooleanType(false);
+		}
+
+		$stringTypes = [
+			new StringType(),
+			new AccessoryNonFalsyStringType(),
+		];
+		if ($binaryType->isFalse()->yes()) {
+			$stringTypes[] = new AccessoryLowercaseStringType();
+		}
+		$stringReturnType = new IntersectionType($stringTypes);
+
+		$algorithmType = $scope->getType($functionCall->getArgs()[0]->value);
+		$constantAlgorithmTypes = $algorithmType->getConstantStrings();
+		if (count($constantAlgorithmTypes) === 0) {
+			if ($functionData['possiblyFalse'] || !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+				return TypeUtils::toBenevolentUnion(TypeCombinator::union($stringReturnType, new ConstantBooleanType(false)));
+			}
+
+			return $stringReturnType;
+		}
+
+		$neverType = new NeverType();
+		$falseType = new ConstantBooleanType(false);
+		$invalidAlgorithmType = $this->phpVersion->throwsValueErrorForInternalFunctions() ? $neverType : $falseType;
+
+		$returnTypes = array_map(
+			function (ConstantStringType $type) use ($functionData, $stringReturnType, $invalidAlgorithmType) {
+				$algorithm = strtolower($type->getValue());
+				if (!in_array($algorithm, $this->hashAlgorithms, true)) {
+					return $invalidAlgorithmType;
+				}
+				if ($functionData['cryptographic'] && in_array($algorithm, self::NON_CRYPTOGRAPHIC_ALGORITHMS, true)) {
+					return $invalidAlgorithmType;
+				}
+				return $stringReturnType;
+			},
+			$constantAlgorithmTypes,
+		);
+
+		$returnType = TypeCombinator::union(...$returnTypes);
+
+		if ($functionData['possiblyFalse'] && !$neverType->isSuperTypeOf($returnType)->yes()) {
+			$returnType = TypeCombinator::union($returnType, $falseType);
+		}
+
+		return $returnType;
+	}
+
+}
diff --git a/src/Type/Php/HighlightStringDynamicReturnTypeExtension.php b/src/Type/Php/HighlightStringDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..9baeb1c4
--- /dev/null
+++ b/src/Type/Php/HighlightStringDynamicReturnTypeExtension.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+
+final class HighlightStringDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'highlight_string';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			if ($this->phpVersion->highlightStringDoesNotReturnFalse()) {
+				return new ConstantBooleanType(true);
+			}
+
+			return new BooleanType();
+		}
+
+		$returnType = $scope->getType($args[1]->value);
+		if ($returnType->isTrue()->yes()) {
+			return new StringType();
+		}
+
+		if ($this->phpVersion->highlightStringDoesNotReturnFalse()) {
+			return new ConstantBooleanType(true);
+		}
+
+		return new BooleanType();
+	}
+
+}
diff --git a/src/Type/Php/HrtimeFunctionReturnTypeExtension.php b/src/Type/Php/HrtimeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..2c9148d4
--- /dev/null
+++ b/src/Type/Php/HrtimeFunctionReturnTypeExtension.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function count;
+
+final class HrtimeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'hrtime';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$arrayType = new ConstantArrayType([new ConstantIntegerType(0), new ConstantIntegerType(1)], [new IntegerType(), new IntegerType()], [2], [], TrinaryLogic::createYes());
+		$numberType = TypeUtils::toBenevolentUnion(TypeCombinator::union(new IntegerType(), new FloatType()));
+
+		if (count($functionCall->getArgs()) < 1) {
+			return $arrayType;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isTrueType = $argType->isTrue();
+		$isFalseType = $argType->isFalse();
+		$compareTypes = $isTrueType->compareTo($isFalseType);
+		if ($compareTypes === $isTrueType) {
+			return $numberType;
+		}
+		if ($compareTypes === $isFalseType) {
+			return $arrayType;
+		}
+
+		return TypeCombinator::union($arrayType, $numberType);
+	}
+
+}
diff --git a/src/Type/Php/ImplodeFunctionReturnTypeExtension.php b/src/Type/Php/ImplodeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..9b6807ed
--- /dev/null
+++ b/src/Type/Php/ImplodeFunctionReturnTypeExtension.php
@@ -0,0 +1,146 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\CombinationsHelper;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function implode;
+use function in_array;
+
+final class ImplodeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), [
+			'implode',
+			'join',
+		], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 1) {
+			$argType = $scope->getType($args[0]->value);
+			if ($argType->isArray()->yes()) {
+				return $this->implode($argType, new ConstantStringType(''));
+			}
+		}
+
+		if (count($args) !== 2) {
+			return new StringType();
+		}
+
+		$separatorType = $scope->getType($args[0]->value);
+		$arrayType = $scope->getType($args[1]->value);
+
+		return $this->implode($arrayType, $separatorType);
+	}
+
+	private function implode(Type $arrayType, Type $separatorType): Type
+	{
+		if (count($arrayType->getConstantArrays()) > 0 && count($separatorType->getConstantStrings()) > 0) {
+			$result = [];
+			foreach ($separatorType->getConstantStrings() as $separator) {
+				foreach ($arrayType->getConstantArrays() as $constantArray) {
+					$constantType = $this->inferConstantType($constantArray, $separator);
+					if ($constantType !== null) {
+						$result[] = $constantType;
+						continue;
+					}
+
+					$result = [];
+					break 2;
+				}
+			}
+
+			if (count($result) > 0) {
+				return TypeCombinator::union(...$result);
+			}
+		}
+
+		$accessoryTypes = [];
+		if ($arrayType->isIterableAtLeastOnce()->yes()) {
+			if ($arrayType->getIterableValueType()->isNonFalsyString()->yes() || $separatorType->isNonFalsyString()->yes()) {
+				$accessoryTypes[] = new AccessoryNonFalsyStringType();
+			} elseif ($arrayType->getIterableValueType()->isNonEmptyString()->yes() || $separatorType->isNonEmptyString()->yes()) {
+				$accessoryTypes[] = new AccessoryNonEmptyStringType();
+			}
+		}
+
+		// implode is one of the four functions that can produce literal strings as blessed by the original RFC: wiki.php.net/rfc/is_literal
+		if ($arrayType->getIterableValueType()->isLiteralString()->yes() && $separatorType->isLiteralString()->yes()) {
+			$accessoryTypes[] = new AccessoryLiteralStringType();
+		}
+		if ($arrayType->getIterableValueType()->isLowercaseString()->yes() && $separatorType->isLowercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+		if ($arrayType->getIterableValueType()->isUppercaseString()->yes() && $separatorType->isUppercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+			return new IntersectionType($accessoryTypes);
+		}
+
+		return new StringType();
+	}
+
+	private function inferConstantType(ConstantArrayType $arrayType, ConstantStringType $separatorType): ?Type
+	{
+		$strings = [];
+		foreach ($arrayType->getAllArrays() as $array) {
+			$valueTypes = $array->getValueTypes();
+
+			$arrayValues = [];
+			$combinationsCount = 1;
+			foreach ($valueTypes as $valueType) {
+				$constScalars = $valueType->getConstantScalarValues();
+				if (count($constScalars) === 0) {
+					return null;
+				}
+				$arrayValues[] = $constScalars;
+				$combinationsCount *= count($constScalars);
+			}
+
+			if ($combinationsCount > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+				return null;
+			}
+
+			$combinations = CombinationsHelper::combinations($arrayValues);
+			foreach ($combinations as $combination) {
+				$strings[] = new ConstantStringType(implode($separatorType->getValue(), $combination));
+			}
+		}
+
+		if (count($strings) > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return null;
+		}
+
+		return TypeCombinator::union(...$strings);
+	}
+
+}
diff --git a/src/Type/Php/InArrayFunctionTypeSpecifyingExtension.php b/src/Type/Php/InArrayFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..5d8d02f7
--- /dev/null
+++ b/src/Type/Php/InArrayFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,168 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\BinaryOp\Equal;
+use PhpParser\Node\Expr\BinaryOp\Identical;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Node\Expr\AlwaysRememberedExpr;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function strtolower;
+
+final class InArrayFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'in_array'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$argsCount = count($node->getArgs());
+		if ($argsCount < 2) {
+			return new SpecifiedTypes();
+		}
+
+		$isStrictComparison = false;
+		if ($argsCount >= 3) {
+			$strictNodeType = $scope->getType($node->getArgs()[2]->value);
+			$isStrictComparison = $strictNodeType->isTrue()->yes();
+		}
+
+		$needleExpr = $node->getArgs()[0]->value;
+		$arrayExpr = $node->getArgs()[1]->value;
+
+		$needleType = $scope->getType($needleExpr);
+		$arrayType = $scope->getType($arrayExpr);
+		$arrayValueType = $arrayType->getIterableValueType();
+
+		$isStrictComparison = $isStrictComparison
+			|| $needleType->isEnum()->yes()
+			|| $arrayValueType->isEnum()->yes();
+
+		if ($arrayExpr instanceof Array_) {
+			$types = null;
+			foreach ($arrayExpr->items as $item) {
+				if ($item->unpack) {
+					$types = null;
+					break;
+				}
+
+				if ($isStrictComparison) {
+					$itemTypes = $this->typeSpecifier->resolveIdentical(new Identical($needleExpr, $item->value), $scope, $context);
+				} else {
+					$itemTypes = $this->typeSpecifier->resolveEqual(new Equal($needleExpr, $item->value), $scope, $context);
+				}
+
+				if ($types === null) {
+					$types = $itemTypes;
+					continue;
+				}
+
+				$types = $context->true() ? $types->normalize($scope)->intersectWith($itemTypes->normalize($scope)) : $types->unionWith($itemTypes);
+			}
+
+			if ($types !== null) {
+				return $types;
+			}
+		}
+
+		if (!$isStrictComparison) {
+			if (
+				$context->true()
+				&& $arrayType->isArray()->yes()
+				&& $arrayType->getIterableValueType()->isSuperTypeOf($needleType)->yes()
+			) {
+				return $this->typeSpecifier->create(
+					$node->getArgs()[1]->value,
+					TypeCombinator::intersect($arrayType, new NonEmptyArrayType()),
+					$context,
+					$scope,
+				);
+			}
+
+			return new SpecifiedTypes();
+		}
+
+		$specifiedTypes = new SpecifiedTypes();
+		if (
+			$context->true()
+			|| (
+				$context->false()
+				&& count($arrayValueType->getFiniteTypes()) > 0
+				&& count($needleType->getFiniteTypes()) > 0
+				&& $arrayType->isIterableAtLeastOnce()->yes()
+			)
+		) {
+			$specifiedTypes = $this->typeSpecifier->create(
+				$needleExpr,
+				$arrayValueType,
+				$context,
+				$scope,
+			);
+			if ($needleExpr instanceof AlwaysRememberedExpr) {
+				$specifiedTypes = $specifiedTypes->unionWith($this->typeSpecifier->create(
+					$needleExpr->getExpr(),
+					$arrayValueType,
+					$context,
+					$scope,
+				));
+			}
+		}
+
+		if (
+			$context->true()
+			|| (
+				$context->false()
+				&& count($needleType->getFiniteTypes()) === 1
+			)
+		) {
+			if ($context->true()) {
+				$arrayValueType = TypeCombinator::union($arrayValueType, $needleType);
+			} else {
+				$arrayValueType = TypeCombinator::remove($arrayValueType, $needleType);
+			}
+
+			$specifiedTypes = $specifiedTypes->unionWith($this->typeSpecifier->create(
+				$node->getArgs()[1]->value,
+				new ArrayType(new MixedType(), $arrayValueType),
+				TypeSpecifierContext::createTrue(),
+				$scope,
+			));
+		}
+
+		if ($context->true() && $arrayType->isArray()->yes()) {
+			$specifiedTypes = $specifiedTypes->unionWith($this->typeSpecifier->create(
+				$node->getArgs()[1]->value,
+				TypeCombinator::intersect($arrayType, new NonEmptyArrayType()),
+				$context,
+				$scope,
+			));
+		}
+
+		return $specifiedTypes;
+	}
+
+}
diff --git a/src/Type/Php/IniGetReturnTypeExtension.php b/src/Type/Php/IniGetReturnTypeExtension.php
new file mode 100644
index 00000000..3ab92fc5
--- /dev/null
+++ b/src/Type/Php/IniGetReturnTypeExtension.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function count;
+
+final class IniGetReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'ini_get';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$numericString = TypeCombinator::intersect(
+			new StringType(),
+			new AccessoryNumericStringType(),
+		);
+		$types = [
+			'date.timezone' => new StringType(),
+			'memory_limit' => new StringType(),
+			'max_execution_time' => $numericString,
+			'max_input_time' => $numericString,
+			'default_socket_timeout' => $numericString,
+			'precision' => $numericString,
+		];
+
+		$argType = $scope->getType($args[0]->value);
+		$results = [];
+		foreach ($argType->getConstantStrings() as $constantString) {
+			if (!array_key_exists($constantString->getValue(), $types)) {
+				return null;
+			}
+			$results[] = $types[$constantString->getValue()];
+		}
+
+		if (count($results) > 0) {
+			return TypeCombinator::union(...$results);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/IntdivThrowTypeExtension.php b/src/Type/Php/IntdivThrowTypeExtension.php
new file mode 100644
index 00000000..e49e72e9
--- /dev/null
+++ b/src/Type/Php/IntdivThrowTypeExtension.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use ArithmeticError;
+use DivisionByZeroError;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionThrowTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use function count;
+use const PHP_INT_MIN;
+
+final class IntdivThrowTypeExtension implements DynamicFunctionThrowTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'intdiv';
+	}
+
+	public function getThrowTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, Scope $scope): ?Type
+	{
+		if (count($funcCall->getArgs()) < 2) {
+			return $functionReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($funcCall->getArgs()[0]->value)->toInteger();
+		$containsMin = $valueType->isSuperTypeOf(new ConstantIntegerType(PHP_INT_MIN));
+
+		$divisorType = $scope->getType($funcCall->getArgs()[1]->value)->toInteger();
+		if (!$containsMin->no()) {
+			$divisionByMinusOne = $divisorType->isSuperTypeOf(new ConstantIntegerType(-1));
+			if (!$divisionByMinusOne->no()) {
+				return new ObjectType(ArithmeticError::class);
+			}
+		}
+
+		$divisionByZero = $divisorType->isSuperTypeOf(new ConstantIntegerType(0));
+		if (!$divisionByZero->no()) {
+			return new ObjectType(DivisionByZeroError::class);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/IsAFunctionTypeSpecifyingExtension.php b/src/Type/Php/IsAFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..6d88f5f7
--- /dev/null
+++ b/src/Type/Php/IsAFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function count;
+use function strtolower;
+
+final class IsAFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(
+		private IsAFunctionTypeSpecifyingHelper $isAFunctionTypeSpecifyingHelper,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'is_a'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if (count($node->getArgs()) < 2) {
+			return new SpecifiedTypes();
+		}
+		$classType = $scope->getType($node->getArgs()[1]->value);
+
+		if (!$classType instanceof ConstantStringType && !$context->true()) {
+			return new SpecifiedTypes([], []);
+		}
+
+		$objectOrClassType = $scope->getType($node->getArgs()[0]->value);
+		$allowStringType = isset($node->getArgs()[2]) ? $scope->getType($node->getArgs()[2]->value) : new ConstantBooleanType(false);
+		$allowString = !$allowStringType->equals(new ConstantBooleanType(false));
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			$this->isAFunctionTypeSpecifyingHelper->determineType($objectOrClassType, $classType, $allowString, true),
+			$context,
+			$scope,
+		);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/IsAFunctionTypeSpecifyingHelper.php b/src/Type/Php/IsAFunctionTypeSpecifyingHelper.php
new file mode 100644
index 00000000..947e7554
--- /dev/null
+++ b/src/Type/Php/IsAFunctionTypeSpecifyingHelper.php
@@ -0,0 +1,79 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+use function array_unique;
+use function array_values;
+
+final class IsAFunctionTypeSpecifyingHelper
+{
+
+	public function determineType(
+		Type $objectOrClassType,
+		Type $classType,
+		bool $allowString,
+		bool $allowSameClass,
+	): Type
+	{
+		$objectOrClassTypeClassNames = $objectOrClassType->getObjectClassNames();
+		if ($allowString) {
+			foreach ($objectOrClassType->getConstantStrings() as $constantString) {
+				$objectOrClassTypeClassNames[] = $constantString->getValue();
+			}
+			$objectOrClassTypeClassNames = array_values(array_unique($objectOrClassTypeClassNames));
+		}
+
+		return TypeTraverser::map(
+			$classType,
+			static function (Type $type, callable $traverse) use ($objectOrClassTypeClassNames, $allowString, $allowSameClass): Type {
+				if ($type instanceof UnionType || $type instanceof IntersectionType) {
+					return $traverse($type);
+				}
+				if ($type instanceof ConstantStringType) {
+					if (!$allowSameClass && $objectOrClassTypeClassNames === [$type->getValue()]) {
+						return new NeverType();
+					}
+					if ($allowString) {
+						return TypeCombinator::union(
+							new ObjectType($type->getValue()),
+							new GenericClassStringType(new ObjectType($type->getValue())),
+						);
+					}
+
+					return new ObjectType($type->getValue());
+				}
+				if ($type instanceof GenericClassStringType) {
+					if ($allowString) {
+						return TypeCombinator::union(
+							$type->getGenericType(),
+							$type,
+						);
+					}
+
+					return $type->getGenericType();
+				}
+				if ($allowString) {
+					return TypeCombinator::union(
+						new ObjectWithoutClassType(),
+						new ClassStringType(),
+					);
+				}
+
+				return new ObjectWithoutClassType();
+			},
+		);
+	}
+
+}
diff --git a/src/Type/Php/IsArrayFunctionTypeSpecifyingExtension.php b/src/Type/Php/IsArrayFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..44f63993
--- /dev/null
+++ b/src/Type/Php/IsArrayFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,47 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\MixedType;
+use function strtolower;
+
+final class IsArrayFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'is_array'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if (!isset($node->getArgs()[0])) {
+			return new SpecifiedTypes();
+		}
+		if ($context->null()) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $this->typeSpecifier->create($node->getArgs()[0]->value, new ArrayType(new MixedType(true), new MixedType(true)), $context, $scope);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/IsCallableFunctionTypeSpecifyingExtension.php b/src/Type/Php/IsCallableFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..b08b78f2
--- /dev/null
+++ b/src/Type/Php/IsCallableFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,70 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\CallableType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function count;
+use function strtolower;
+
+final class IsCallableFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(private MethodExistsTypeSpecifyingExtension $methodExistsExtension)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'is_callable'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if ($context->null()) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (!isset($node->getArgs()[0])) {
+			return new SpecifiedTypes();
+		}
+
+		$value = $node->getArgs()[0]->value;
+		$valueType = $scope->getType($value);
+		if (
+			$value instanceof Array_
+			&& count($value->items) === 2
+			&& $valueType->isConstantArray()->yes()
+			&& !$valueType->isCallable()->no()
+		) {
+			$functionCall = new FuncCall(new Name('method_exists'), [
+				new Arg($value->items[0]->value),
+				new Arg($value->items[1]->value),
+			]);
+			return $this->methodExistsExtension->specifyTypes($functionReflection, $functionCall, $scope, $context);
+		}
+
+		return $this->typeSpecifier->create($value, new CallableType(), $context, $scope);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/IsIterableFunctionTypeSpecifyingExtension.php b/src/Type/Php/IsIterableFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..4502e638
--- /dev/null
+++ b/src/Type/Php/IsIterableFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\IterableType;
+use PHPStan\Type\MixedType;
+use function strtolower;
+
+final class IsIterableFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'is_iterable'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if ($context->null()) {
+			throw new ShouldNotHappenException();
+		}
+
+		if (!isset($node->getArgs()[0])) {
+			return new SpecifiedTypes();
+		}
+
+		return $this->typeSpecifier->create($node->getArgs()[0]->value, new IterableType(new MixedType(), new MixedType()), $context, $scope);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/IsSubclassOfFunctionTypeSpecifyingExtension.php b/src/Type/Php/IsSubclassOfFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..404c85ef
--- /dev/null
+++ b/src/Type/Php/IsSubclassOfFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\Generic\GenericClassStringType;
+use function count;
+use function strtolower;
+
+final class IsSubclassOfFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(
+		private IsAFunctionTypeSpecifyingHelper $isAFunctionTypeSpecifyingHelper,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'is_subclass_of'
+			&& !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		if (!$context->true() || count($node->getArgs()) < 2) {
+			return new SpecifiedTypes();
+		}
+
+		$objectOrClassType = $scope->getType($node->getArgs()[0]->value);
+		$classType = $scope->getType($node->getArgs()[1]->value);
+		$allowStringType = isset($node->getArgs()[2]) ? $scope->getType($node->getArgs()[2]->value) : new ConstantBooleanType(true);
+		$allowString = !$allowStringType->equals(new ConstantBooleanType(false));
+
+		// prevent false-positives in IsAFunctionTypeSpecifyingHelper
+		if ($objectOrClassType instanceof GenericClassStringType && $classType instanceof GenericClassStringType) {
+			return new SpecifiedTypes([], []);
+		}
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			$this->isAFunctionTypeSpecifyingHelper->determineType($objectOrClassType, $classType, $allowString, false),
+			$context,
+			$scope,
+		);
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/IteratorToArrayFunctionReturnTypeExtension.php b/src/Type/Php/IteratorToArrayFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..64ac2bac
--- /dev/null
+++ b/src/Type/Php/IteratorToArrayFunctionReturnTypeExtension.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function strtolower;
+
+final class IteratorToArrayFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'iterator_to_array';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$arguments = $functionCall->getArgs();
+
+		if ($arguments === []) {
+			return null;
+		}
+
+		$traversableType = $scope->getType($arguments[0]->value);
+
+		if (isset($arguments[1])) {
+			$preserveKeysType = $scope->getType($arguments[1]->value);
+
+			if ($preserveKeysType->isFalse()->yes()) {
+				return TypeCombinator::intersect(new ArrayType(
+					new IntegerType(),
+					$traversableType->getIterableValueType(),
+				), new AccessoryArrayListType());
+			}
+		}
+
+		$arrayKeyType = $traversableType->getIterableKeyType()->toArrayKey();
+
+		if ($arrayKeyType instanceof ErrorType) {
+			return new NeverType(true);
+		}
+
+		return new ArrayType(
+			$arrayKeyType,
+			$traversableType->getIterableValueType(),
+		);
+	}
+
+}
diff --git a/src/Type/Php/JsonThrowOnErrorDynamicReturnTypeExtension.php b/src/Type/Php/JsonThrowOnErrorDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..8c11a78e
--- /dev/null
+++ b/src/Type/Php/JsonThrowOnErrorDynamicReturnTypeExtension.php
@@ -0,0 +1,132 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name\FullyQualified;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\BitwiseFlagHelper;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\ConstantTypeHelper;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function is_bool;
+use function json_decode;
+
+final class JsonThrowOnErrorDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	/** @var array<string, int> */
+	private array $argumentPositions = [
+		'json_encode' => 1,
+		'json_decode' => 3,
+	];
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private BitwiseFlagHelper $bitwiseFlagAnalyser,
+	)
+	{
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+	): bool
+	{
+		if ($functionReflection->getName() === 'json_decode') {
+			return true;
+		}
+
+		return $functionReflection->getName() === 'json_encode' && $this->reflectionProvider->hasConstant(new FullyQualified('JSON_THROW_ON_ERROR'), null);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$argumentPosition = $this->argumentPositions[$functionReflection->getName()];
+		$defaultReturnType = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+
+		if ($functionReflection->getName() === 'json_decode') {
+			$defaultReturnType = $this->narrowTypeForJsonDecode($functionCall, $scope, $defaultReturnType);
+		}
+
+		if (!isset($functionCall->getArgs()[$argumentPosition])) {
+			return $defaultReturnType;
+		}
+
+		$optionsExpr = $functionCall->getArgs()[$argumentPosition]->value;
+		if ($functionReflection->getName() === 'json_encode' && $this->bitwiseFlagAnalyser->bitwiseOrContainsConstant($optionsExpr, $scope, 'JSON_THROW_ON_ERROR')->yes()) {
+			return TypeCombinator::remove($defaultReturnType, new ConstantBooleanType(false));
+		}
+
+		return $defaultReturnType;
+	}
+
+	private function narrowTypeForJsonDecode(FuncCall $funcCall, Scope $scope, Type $fallbackType): Type
+	{
+		$args = $funcCall->getArgs();
+		$isForceArray = $this->isForceArray($funcCall, $scope);
+		if (!isset($args[0])) {
+			return $fallbackType;
+		}
+
+		$firstValueType = $scope->getType($args[0]->value);
+		if ($firstValueType instanceof ConstantStringType) {
+			return $this->resolveConstantStringType($firstValueType, $isForceArray);
+		}
+
+		if ($isForceArray) {
+			return TypeCombinator::remove($fallbackType, new ObjectWithoutClassType());
+		}
+
+		return $fallbackType;
+	}
+
+	/**
+	 * Is "json_decode(..., true)"?
+	 */
+	private function isForceArray(FuncCall $funcCall, Scope $scope): bool
+	{
+		$args = $funcCall->getArgs();
+		if (!isset($args[1])) {
+			return false;
+		}
+
+		$secondArgType = $scope->getType($args[1]->value);
+		$secondArgValue = $secondArgType instanceof ConstantScalarType ? $secondArgType->getValue() : null;
+
+		if (is_bool($secondArgValue)) {
+			return $secondArgValue;
+		}
+
+		if ($secondArgValue !== null || !isset($args[3])) {
+			return false;
+		}
+
+		// depends on used constants, @see https://www.php.net/manual/en/json.constants.php#constant.json-object-as-array
+		return $this->bitwiseFlagAnalyser->bitwiseOrContainsConstant($args[3]->value, $scope, 'JSON_OBJECT_AS_ARRAY')->yes();
+	}
+
+	private function resolveConstantStringType(ConstantStringType $constantStringType, bool $isForceArray): Type
+	{
+		$decodedValue = json_decode($constantStringType->getValue(), $isForceArray);
+
+		return ConstantTypeHelper::getTypeFromValue($decodedValue);
+	}
+
+}
diff --git a/src/Type/Php/JsonThrowTypeExtension.php b/src/Type/Php/JsonThrowTypeExtension.php
new file mode 100644
index 00000000..b245e787
--- /dev/null
+++ b/src/Type/Php/JsonThrowTypeExtension.php
@@ -0,0 +1,65 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\BitwiseFlagHelper;
+use PHPStan\Type\DynamicFunctionThrowTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use function in_array;
+
+final class JsonThrowTypeExtension implements DynamicFunctionThrowTypeExtension
+{
+
+	private const ARGUMENTS_POSITIONS = [
+		'json_encode' => 1,
+		'json_decode' => 3,
+	];
+
+	public function __construct(
+		private ReflectionProvider $reflectionProvider,
+		private BitwiseFlagHelper $bitwiseFlagAnalyser,
+	)
+	{
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+	): bool
+	{
+		return in_array(
+			$functionReflection->getName(),
+			[
+				'json_encode',
+				'json_decode',
+			],
+			true,
+		) && $this->reflectionProvider->hasConstant(new Name\FullyQualified('JSON_THROW_ON_ERROR'), null);
+	}
+
+	public function getThrowTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$argumentPosition = self::ARGUMENTS_POSITIONS[$functionReflection->getName()];
+		if (!isset($functionCall->getArgs()[$argumentPosition])) {
+			return null;
+		}
+
+		$optionsExpr = $functionCall->getArgs()[$argumentPosition]->value;
+		if (!$this->bitwiseFlagAnalyser->bitwiseOrContainsConstant($optionsExpr, $scope, 'JSON_THROW_ON_ERROR')->no()) {
+			return new ObjectType('JsonException');
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/LtrimFunctionReturnTypeExtension.php b/src/Type/Php/LtrimFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..bcbe2f75
--- /dev/null
+++ b/src/Type/Php/LtrimFunctionReturnTypeExtension.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+use function ltrim;
+
+final class LtrimFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'ltrim';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) !== 2) {
+			return null;
+		}
+
+		$string = $scope->getType($functionCall->getArgs()[0]->value);
+		$trimChars = $scope->getType($functionCall->getArgs()[1]->value);
+
+		if ($trimChars instanceof ConstantStringType && $trimChars->getValue() === '\\' && $string->isClassString()->yes()) {
+			if ($string instanceof ConstantStringType) {
+				return new ConstantStringType(ltrim($string->getValue(), $trimChars->getValue()), true);
+			}
+
+			return new ClassStringType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/MbConvertEncodingFunctionReturnTypeExtension.php b/src/Type/Php/MbConvertEncodingFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..85597d5a
--- /dev/null
+++ b/src/Type/Php/MbConvertEncodingFunctionReturnTypeExtension.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+
+final class MbConvertEncodingFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'mb_convert_encoding';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isString = $argType->isString();
+		$isArray = $argType->isArray();
+		$compare = $isString->compareTo($isArray);
+		if ($compare === $isString) {
+			return new StringType();
+		} elseif ($compare === $isArray) {
+			return new ArrayType(new IntegerType(), new StringType());
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/MbFunctionsReturnTypeExtension.php b/src/Type/Php/MbFunctionsReturnTypeExtension.php
new file mode 100644
index 00000000..387cf0e6
--- /dev/null
+++ b/src/Type/Php/MbFunctionsReturnTypeExtension.php
@@ -0,0 +1,83 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function array_key_exists;
+use function array_map;
+use function array_unique;
+use function count;
+
+final class MbFunctionsReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	use MbFunctionsReturnTypeExtensionTrait;
+
+	/** @var int[]  */
+	private array $encodingPositionMap = [
+		'mb_http_output' => 1,
+		'mb_regex_encoding' => 1,
+		'mb_internal_encoding' => 1,
+		'mb_encoding_aliases' => 1,
+		'mb_chr' => 2,
+		'mb_ord' => 2,
+	];
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return array_key_exists($functionReflection->getName(), $this->encodingPositionMap);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$returnType = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+		$positionEncodingParam = $this->encodingPositionMap[$functionReflection->getName()];
+
+		if (count($functionCall->getArgs()) < $positionEncodingParam) {
+			return TypeCombinator::remove($returnType, new BooleanType());
+		}
+
+		$strings = $scope->getType($functionCall->getArgs()[$positionEncodingParam - 1]->value)->getConstantStrings();
+		$results = array_unique(array_map(fn (ConstantStringType $encoding): bool => $this->isSupportedEncoding($encoding->getValue()), $strings));
+
+		if ($returnType->equals(new UnionType([new StringType(), new BooleanType()]))) {
+			return count($results) === 1 ? new ConstantBooleanType($results[0]) : new BooleanType();
+		}
+
+		if (count($results) === 1) {
+			$invalidEncodingReturn = new ConstantBooleanType(false);
+			if ($this->phpVersion->throwsOnInvalidMbStringEncoding()) {
+				$invalidEncodingReturn = new NeverType();
+			}
+
+			return $results[0]
+				? TypeCombinator::remove($returnType, new ConstantBooleanType(false))
+				: $invalidEncodingReturn;
+		}
+
+		return $returnType;
+	}
+
+}
diff --git a/src/Type/Php/MbFunctionsReturnTypeExtensionTrait.php b/src/Type/Php/MbFunctionsReturnTypeExtensionTrait.php
new file mode 100644
index 00000000..5bb18c31
--- /dev/null
+++ b/src/Type/Php/MbFunctionsReturnTypeExtensionTrait.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PHPStan\ShouldNotHappenException;
+use function array_filter;
+use function array_map;
+use function array_merge;
+use function function_exists;
+use function in_array;
+use function is_null;
+use function mb_encoding_aliases;
+use function mb_list_encodings;
+use function strtoupper;
+
+trait MbFunctionsReturnTypeExtensionTrait
+{
+
+	/** @var string[]|null */
+	private ?array $supportedEncodings = null;
+
+	private function isSupportedEncoding(string $encoding): bool
+	{
+		return in_array(strtoupper($encoding), $this->getSupportedEncodings(), true);
+	}
+
+	/** @return string[] */
+	private function getSupportedEncodings(): array
+	{
+		if (!is_null($this->supportedEncodings)) {
+			return $this->supportedEncodings;
+		}
+
+		$supportedEncodings = [];
+		if (function_exists('mb_list_encodings')) {
+			foreach (mb_list_encodings() as $encoding) {
+				$aliases = @mb_encoding_aliases($encoding);
+				if ($aliases === false) {
+					throw new ShouldNotHappenException();
+				}
+				$supportedEncodings = array_merge($supportedEncodings, $aliases, [$encoding]);
+			}
+		}
+		$this->supportedEncodings = array_map('strtoupper', $supportedEncodings);
+
+		// PHP 7.3 and 7.4 claims 'pass' and its alias 'none' to be supported, but actually 'pass' was removed in 7.3
+		if (!$this->phpVersion->supportsPassNoneEncodings()) {
+			$this->supportedEncodings = array_filter(
+				$this->supportedEncodings,
+				static fn (string $enc) => !in_array($enc, ['PASS', 'NONE'], true),
+			);
+		}
+
+		return $this->supportedEncodings;
+	}
+
+}
diff --git a/src/Type/Php/MbStrlenFunctionReturnTypeExtension.php b/src/Type/Php/MbStrlenFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..5d3df99d
--- /dev/null
+++ b/src/Type/Php/MbStrlenFunctionReturnTypeExtension.php
@@ -0,0 +1,156 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function array_merge;
+use function array_unique;
+use function count;
+use function in_array;
+use function max;
+use function mb_internal_encoding;
+use function mb_strlen;
+use function min;
+use function range;
+use function sort;
+use function sprintf;
+use function var_export;
+
+final class MbStrlenFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const UNSUPPORTED_ENCODING = 'unsupported';
+
+	use MbFunctionsReturnTypeExtensionTrait;
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'mb_strlen';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 0) {
+			return null;
+		}
+
+		$encodings = [];
+
+		if (count($functionCall->getArgs()) === 1) {
+			// there is a chance to get an unsupported encoding 'pass' or 'none' here on PHP 7.3-7.4
+			$encodings = [mb_internal_encoding()];
+		} elseif (count($functionCall->getArgs()) === 2) { // custom encoding is specified
+			$encodings = array_map(
+				static fn (ConstantStringType $t) => $t->getValue(),
+				$scope->getType($functionCall->getArgs()[1]->value)->getConstantStrings(),
+			);
+		}
+
+		if (count($encodings) > 0) {
+			for ($i = 0; $i < count($encodings); $i++) {
+				if ($this->isSupportedEncoding($encodings[$i])) {
+					continue;
+				}
+				$encodings[$i] = self::UNSUPPORTED_ENCODING;
+			}
+
+			$encodings = array_unique($encodings);
+
+			if (in_array(self::UNSUPPORTED_ENCODING, $encodings, true) && count($encodings) === 1) {
+				if ($this->phpVersion->throwsOnInvalidMbStringEncoding()) {
+					return new NeverType();
+				}
+				return new ConstantBooleanType(false);
+			}
+		} else { // if there aren't encoding constants, use all available encodings
+			$encodings = array_merge($this->getSupportedEncodings(), [self::UNSUPPORTED_ENCODING]);
+		}
+
+		$argType = $scope->getType($args[0]->value);
+		$constantScalars = $argType->getConstantScalarTypes();
+
+		$lengths = [];
+		foreach ($constantScalars as $constantScalar) {
+			$stringScalar = $constantScalar->toString();
+			if (!($stringScalar instanceof ConstantStringType)) {
+				$lengths = [];
+				break;
+			}
+
+			foreach ($encodings as $encoding) {
+				if (!$this->isSupportedEncoding($encoding)) {
+					continue;
+				}
+
+				$length = @mb_strlen($stringScalar->getValue(), $encoding);
+				if ($length === false) {
+					throw new ShouldNotHappenException(sprintf('Got false on a supported encoding %s and value %s', $encoding, var_export($stringScalar->getValue(), true)));
+				}
+				$lengths[] = $length;
+			}
+		}
+
+		$isNonEmpty = $argType->isNonEmptyString();
+		$numeric = TypeCombinator::union(new IntegerType(), new FloatType());
+		if (count($lengths) > 0) {
+			$lengths = array_unique($lengths);
+			sort($lengths);
+			if ($lengths === range(min($lengths), max($lengths))) {
+				$range = IntegerRangeType::fromInterval(min($lengths), max($lengths));
+			} else {
+				$range = TypeCombinator::union(...array_map(static fn ($l) => new ConstantIntegerType($l), $lengths));
+			}
+		} elseif ($argType->isBoolean()->yes()) {
+			$range = IntegerRangeType::fromInterval(0, 1);
+		} elseif (
+			$isNonEmpty->yes()
+			|| $numeric->isSuperTypeOf($argType)->yes()
+			|| TypeCombinator::remove($argType, $numeric)->isNonEmptyString()->yes()
+		) {
+			$range = IntegerRangeType::fromInterval(1, null);
+		} elseif ($argType->isString()->yes() && $isNonEmpty->no()) {
+			$range = new ConstantIntegerType(0);
+		} else {
+			$range = TypeCombinator::remove(
+				ParametersAcceptorSelector::selectFromArgs(
+					$scope,
+					$functionCall->getArgs(),
+					$functionReflection->getVariants(),
+				)->getReturnType(),
+				new ConstantBooleanType(false),
+			);
+		}
+
+		if (!$this->phpVersion->throwsOnInvalidMbStringEncoding() && in_array(self::UNSUPPORTED_ENCODING, $encodings, true)) {
+			return TypeCombinator::union($range, new ConstantBooleanType(false));
+		}
+		return $range;
+	}
+
+}
diff --git a/src/Type/Php/MbSubstituteCharacterDynamicReturnTypeExtension.php b/src/Type/Php/MbSubstituteCharacterDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..385cf1b9
--- /dev/null
+++ b/src/Type/Php/MbSubstituteCharacterDynamicReturnTypeExtension.php
@@ -0,0 +1,136 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function in_array;
+use function strtolower;
+
+final class MbSubstituteCharacterDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'mb_substitute_character';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$minCodePoint = $this->phpVersion->getVersionId() < 80000 ? 1 : 0;
+		$maxCodePoint = $this->phpVersion->supportsAllUnicodeScalarCodePointsInMbSubstituteCharacter() ? 0x10FFFF : 0xFFFE;
+		$ranges = [];
+
+		if ($this->phpVersion->supportsAllUnicodeScalarCodePointsInMbSubstituteCharacter()) {
+			// Surrogates aren't valid in PHP 7.2+
+			$ranges[] = IntegerRangeType::fromInterval($minCodePoint, 0xD7FF);
+			$ranges[] = IntegerRangeType::fromInterval(0xE000, $maxCodePoint);
+		} else {
+			$ranges[] = IntegerRangeType::fromInterval($minCodePoint, $maxCodePoint);
+		}
+
+		if (!isset($functionCall->getArgs()[0])) {
+			return TypeCombinator::union(
+				new ConstantStringType('none'),
+				new ConstantStringType('long'),
+				new ConstantStringType('entity'),
+				...$ranges,
+			);
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isString = $argType->isString();
+		$isNull = $argType->isNull();
+		$isInteger = $argType->isInteger();
+
+		if ($isString->no() && $isNull->no() && $isInteger->no()) {
+			if ($this->phpVersion->throwsTypeErrorForInternalFunctions()) {
+				return new NeverType();
+			}
+
+			return new BooleanType();
+		}
+
+		if ($isInteger->yes()) {
+			$invalidRanges = [];
+
+			foreach ($ranges as $range) {
+				$isInRange = $range->isSuperTypeOf($argType);
+
+				if ($isInRange->yes()) {
+					return new ConstantBooleanType(true);
+				}
+
+				$invalidRanges[] = $isInRange->no();
+			}
+
+			if ($argType instanceof ConstantIntegerType || !in_array(false, $invalidRanges, true)) {
+				if ($this->phpVersion->throwsValueErrorForInternalFunctions()) {
+					return new NeverType();
+				}
+
+				return new ConstantBooleanType(false);
+			}
+		} elseif ($isString->yes()) {
+			if ($argType->isNonEmptyString()->no()) {
+				// The empty string was a valid alias for "none" in PHP < 8.
+				if ($this->phpVersion->isEmptyStringValidAliasForNoneInMbSubstituteCharacter()) {
+					return new ConstantBooleanType(true);
+				}
+
+				return new NeverType();
+			}
+
+			if (!$this->phpVersion->isNumericStringValidArgInMbSubstituteCharacter() && $argType->isNumericString()->yes()) {
+				return new NeverType();
+			}
+
+			if ($argType instanceof ConstantStringType) {
+				$value = strtolower($argType->getValue());
+
+				if (in_array($value, ['none', 'long', 'entity'], true)) {
+					return new ConstantBooleanType(true);
+				}
+
+				if ($argType->isNumericString()->yes()) {
+					$codePoint = (int) $value;
+					$isValid = $codePoint >= $minCodePoint && $codePoint <= $maxCodePoint;
+
+					if ($this->phpVersion->supportsAllUnicodeScalarCodePointsInMbSubstituteCharacter()) {
+						$isValid = $isValid && ($codePoint < 0xD800 || $codePoint > 0xDFFF);
+					}
+
+					return new ConstantBooleanType($isValid);
+				}
+
+				if ($this->phpVersion->throwsValueErrorForInternalFunctions()) {
+					return new NeverType();
+				}
+
+				return new ConstantBooleanType(false);
+			}
+		} elseif ($isNull->yes()) {
+			// The $substitute_character arg is nullable in PHP 8+
+			return new ConstantBooleanType($this->phpVersion->isNullValidArgInMbSubstituteCharacter());
+		}
+
+		return new BooleanType();
+	}
+
+}
diff --git a/src/Type/Php/MethodExistsTypeSpecifyingExtension.php b/src/Type/Php/MethodExistsTypeSpecifyingExtension.php
new file mode 100644
index 00000000..b80389d5
--- /dev/null
+++ b/src/Type/Php/MethodExistsTypeSpecifyingExtension.php
@@ -0,0 +1,86 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\HasMethodType;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class MethodExistsTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return $functionReflection->getName() === 'method_exists'
+			&& $context->true()
+			&& count($node->getArgs()) >= 2;
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		$methodNameType = $scope->getType($node->getArgs()[1]->value);
+		if (!$methodNameType instanceof ConstantStringType) {
+			return new SpecifiedTypes([], []);
+		}
+
+		$objectType = $scope->getType($node->getArgs()[0]->value);
+		if ($objectType->isString()->yes()) {
+			if ($objectType->isClassString()->yes()) {
+				return $this->typeSpecifier->create(
+					$node->getArgs()[0]->value,
+					new IntersectionType([
+						$objectType,
+						new HasMethodType($methodNameType->getValue()),
+					]),
+					$context,
+					$scope,
+				);
+			}
+
+			return new SpecifiedTypes([], []);
+		}
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			new UnionType([
+				new IntersectionType([
+					new ObjectWithoutClassType(),
+					new HasMethodType($methodNameType->getValue()),
+				]),
+				new ClassStringType(),
+			]),
+			$context,
+			$scope,
+		);
+	}
+
+}
diff --git a/src/Type/Php/MicrotimeFunctionReturnTypeExtension.php b/src/Type/Php/MicrotimeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..91bbb2bf
--- /dev/null
+++ b/src/Type/Php/MicrotimeFunctionReturnTypeExtension.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class MicrotimeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'microtime';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return new StringType();
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isTrueType = $argType->isTrue();
+		$isFalseType = $argType->isFalse();
+		$compareTypes = $isTrueType->compareTo($isFalseType);
+		if ($compareTypes === $isTrueType) {
+			return new FloatType();
+		}
+		if ($compareTypes === $isFalseType) {
+			return new StringType();
+		}
+
+		if ($argType instanceof MixedType) {
+			return new BenevolentUnionType([new StringType(), new FloatType()]);
+		}
+
+		return new UnionType([new StringType(), new FloatType()]);
+	}
+
+}
diff --git a/src/Type/Php/MinMaxFunctionReturnTypeExtension.php b/src/Type/Php/MinMaxFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..a2eccd38
--- /dev/null
+++ b/src/Type/Php/MinMaxFunctionReturnTypeExtension.php
@@ -0,0 +1,243 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\BinaryOp\Smaller;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Ternary;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use function count;
+use function in_array;
+
+final class MinMaxFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['min', 'max'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (!isset($functionCall->getArgs()[0])) {
+			return null;
+		}
+
+		if (count($functionCall->getArgs()) === 1) {
+			$argType = $scope->getType($functionCall->getArgs()[0]->value);
+			if ($argType->isArray()->yes()) {
+				return $this->processArrayType(
+					$functionReflection->getName(),
+					$argType,
+				);
+			}
+
+			return new ErrorType();
+		}
+
+		// rewrite min($x, $y) as $x < $y ? $x : $y
+		// we don't handle arrays, which have different semantics
+		$functionName = $functionReflection->getName();
+		$args = $functionCall->getArgs();
+		if (count($functionCall->getArgs()) === 2) {
+			$argType0 = $scope->getType($args[0]->value);
+			$argType1 = $scope->getType($args[1]->value);
+
+			if ($argType0->isArray()->no() && $argType1->isArray()->no()) {
+				if ($functionName === 'min') {
+					return $scope->getType(new Ternary(
+						new Smaller($args[0]->value, $args[1]->value),
+						$args[0]->value,
+						$args[1]->value,
+					));
+				} elseif ($functionName === 'max') {
+					return $scope->getType(new Ternary(
+						new Smaller($args[0]->value, $args[1]->value),
+						$args[1]->value,
+						$args[0]->value,
+					));
+				}
+			}
+		}
+
+		$argumentTypes = [];
+		foreach ($functionCall->getArgs() as $arg) {
+			$argType = $scope->getType($arg->value);
+			if ($arg->unpack) {
+				$iterableValueType = $argType->getIterableValueType();
+				if ($iterableValueType instanceof UnionType) {
+					foreach ($iterableValueType->getTypes() as $innerType) {
+						$argumentTypes[] = $innerType;
+					}
+				} else {
+					$argumentTypes[] = $iterableValueType;
+				}
+				continue;
+			}
+
+			$argumentTypes[] = $argType;
+		}
+
+		return $this->processType(
+			$functionName,
+			$argumentTypes,
+		);
+	}
+
+	private function processArrayType(string $functionName, Type $argType): Type
+	{
+		$constArrayTypes = $argType->getConstantArrays();
+		if (count($constArrayTypes) > 0) {
+			$resultTypes = [];
+			foreach ($constArrayTypes as $constArrayType) {
+				$isIterable = $constArrayType->isIterableAtLeastOnce();
+				if ($isIterable->no() && !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+					$resultTypes[] = new ConstantBooleanType(false);
+					continue;
+				}
+				$argumentTypes = [];
+				if (!$isIterable->yes() && !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+					$argumentTypes[] = new ConstantBooleanType(false);
+				}
+
+				foreach ($constArrayType->getValueTypes() as $innerType) {
+					$argumentTypes[] = $innerType;
+				}
+
+				$resultTypes[] = $this->processType($functionName, $argumentTypes);
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		$isIterable = $argType->isIterableAtLeastOnce();
+		if ($isIterable->no() && !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+			return new ConstantBooleanType(false);
+		}
+		$iterableValueType = $argType->getIterableValueType();
+		$argumentTypes = [];
+		if (!$isIterable->yes() && !$this->phpVersion->throwsValueErrorForInternalFunctions()) {
+			$argumentTypes[] = new ConstantBooleanType(false);
+		}
+
+		$argumentTypes[] = $iterableValueType;
+
+		return $this->processType($functionName, $argumentTypes);
+	}
+
+	/**
+	 * @param Type[] $types
+	 */
+	private function processType(
+		string $functionName,
+		array $types,
+	): Type
+	{
+		$resultType = null;
+		foreach ($types as $type) {
+			if ($resultType === null) {
+				$resultType = $type;
+				continue;
+			}
+
+			$compareResult = $this->compareTypes($resultType, $type);
+			if ($compareResult === null) {
+				return TypeCombinator::union(...$types);
+			}
+
+			if ($functionName === 'min') {
+				if ($compareResult === $type) {
+					$resultType = $type;
+				}
+			} elseif ($functionName === 'max') {
+				if ($compareResult === $resultType) {
+					$resultType = $type;
+				}
+			}
+		}
+
+		if ($resultType === null) {
+			return new ErrorType();
+		}
+
+		return $resultType;
+	}
+
+	private function compareTypes(
+		Type $firstType,
+		Type $secondType,
+	): ?Type
+	{
+		if (
+			$firstType->isArray()->yes()
+			&& $secondType->isConstantScalarValue()->yes()
+		) {
+			return $secondType;
+		}
+
+		if (
+			$firstType->isConstantScalarValue()->yes()
+			&& $secondType->isArray()->yes()
+		) {
+			return $firstType;
+		}
+
+		if (
+			$firstType instanceof ConstantArrayType
+			&& $secondType instanceof ConstantArrayType
+		) {
+			if ($secondType->getArraySize() < $firstType->getArraySize()) {
+				return $secondType;
+			} elseif ($firstType->getArraySize() < $secondType->getArraySize()) {
+				return $firstType;
+			}
+
+			foreach ($firstType->getValueTypes() as $i => $firstValueType) {
+				$secondValueType = $secondType->getValueTypes()[$i];
+				$compareResult = $this->compareTypes($firstValueType, $secondValueType);
+				if ($compareResult === $firstValueType) {
+					return $firstType;
+				}
+
+				if ($compareResult === $secondValueType) {
+					return $secondType;
+				}
+			}
+
+			return null;
+		}
+
+		if (
+			$firstType instanceof ConstantScalarType
+			&& $secondType instanceof ConstantScalarType
+		) {
+			if ($secondType->getValue() < $firstType->getValue()) {
+				return $secondType;
+			}
+
+			if ($firstType->getValue() < $secondType->getValue()) {
+				return $firstType;
+			}
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/NonEmptyStringFunctionsReturnTypeExtension.php b/src/Type/Php/NonEmptyStringFunctionsReturnTypeExtension.php
new file mode 100644
index 00000000..b3a700b9
--- /dev/null
+++ b/src/Type/Php/NonEmptyStringFunctionsReturnTypeExtension.php
@@ -0,0 +1,96 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+use const ENT_SUBSTITUTE;
+
+final class NonEmptyStringFunctionsReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), [
+			'addslashes',
+			'addcslashes',
+			'escapeshellarg',
+			'escapeshellcmd',
+			'htmlspecialchars',
+			'htmlentities',
+			'urlencode',
+			'urldecode',
+			'preg_quote',
+			'rawurlencode',
+			'rawurldecode',
+		], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 0) {
+			return null;
+		}
+
+		if (in_array($functionReflection->getName(), [
+			'htmlspecialchars',
+			'htmlentities',
+		], true)) {
+			if (!$this->isSubstituteFlagSet($args, $scope)) {
+				return new StringType();
+			}
+		}
+
+		$argType = $scope->getType($args[0]->value);
+		if ($argType->isNonFalsyString()->yes()) {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonFalsyStringType(),
+			]);
+		}
+		if ($argType->isNonEmptyString()->yes()) {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+			]);
+		}
+
+		return new StringType();
+	}
+
+	/**
+	 * @param Arg[] $args
+	 */
+	private function isSubstituteFlagSet(
+		array $args,
+		Scope $scope,
+	): bool
+	{
+		if (!isset($args[1])) {
+			return true;
+		}
+		$flagsType = $scope->getType($args[1]->value);
+		if (!$flagsType instanceof ConstantIntegerType) {
+			return false;
+		}
+		return (bool) ($flagsType->getValue() & ENT_SUBSTITUTE);
+	}
+
+}
diff --git a/src/Type/Php/NumberFormatFunctionDynamicReturnTypeExtension.php b/src/Type/Php/NumberFormatFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..df0a05b0
--- /dev/null
+++ b/src/Type/Php/NumberFormatFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,50 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function in_array;
+
+final class NumberFormatFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'number_format';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$stringType = new StringType();
+		if (!isset($functionCall->getArgs()[3])) {
+			return $stringType;
+		}
+
+		$thousandsType = $scope->getType($functionCall->getArgs()[3]->value);
+		$decimalType = $scope->getType($functionCall->getArgs()[2]->value);
+
+		if (!$thousandsType instanceof ConstantStringType || $thousandsType->getValue() !== '') {
+			return $stringType;
+		}
+
+		if (!$decimalType instanceof ConstantScalarType || !in_array($decimalType->getValue(), [null, '.', ''], true)) {
+			return $stringType;
+		}
+
+		return new IntersectionType([
+			$stringType,
+			new AccessoryNumericStringType(),
+		]);
+	}
+
+}
diff --git a/src/Type/Php/OpenSslEncryptParameterOutTypeExtension.php b/src/Type/Php/OpenSslEncryptParameterOutTypeExtension.php
new file mode 100644
index 00000000..b3aca177
--- /dev/null
+++ b/src/Type/Php/OpenSslEncryptParameterOutTypeExtension.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\FunctionParameterOutTypeExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function in_array;
+use function openssl_get_cipher_methods;
+use function strtolower;
+use function substr;
+
+final class OpenSslEncryptParameterOutTypeExtension implements FunctionParameterOutTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool
+	{
+		return $functionReflection->getName() === 'openssl_encrypt' && $parameter->getName() === 'tag';
+	}
+
+	public function getParameterOutTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, ParameterReflection $parameter, Scope $scope): ?Type
+	{
+		$args = $funcCall->getArgs();
+		$cipherArg = $args[1] ?? null;
+
+		if ($cipherArg === null) {
+			return null;
+		}
+
+		$tagTypes = [];
+
+		foreach ($scope->getType($cipherArg->value)->getConstantStrings() as $cipherType) {
+			$cipher = strtolower($cipherType->getValue());
+			$mode = substr($cipher, -3);
+
+			if (!in_array($cipher, openssl_get_cipher_methods(), true)) {
+				$tagTypes[] = new NullType();
+				continue;
+			}
+
+			if (in_array($mode, ['gcm', 'ccm'], true)) {
+				$tagTypes[] = TypeCombinator::intersect(
+					new StringType(),
+					new AccessoryNonEmptyStringType(),
+				);
+
+				continue;
+			}
+
+			$tagTypes[] = new NullType();
+		}
+
+		if ($tagTypes === []) {
+			return TypeCombinator::addNull(TypeCombinator::intersect(
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+			));
+		}
+
+		return TypeCombinator::union(...$tagTypes);
+	}
+
+}
diff --git a/src/Type/Php/ParseStrParameterOutTypeExtension.php b/src/Type/Php/ParseStrParameterOutTypeExtension.php
new file mode 100644
index 00000000..e98ad1d4
--- /dev/null
+++ b/src/Type/Php/ParseStrParameterOutTypeExtension.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\FunctionParameterOutTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function count;
+use function in_array;
+use function strtolower;
+
+final class ParseStrParameterOutTypeExtension implements FunctionParameterOutTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool
+	{
+		return in_array(strtolower($functionReflection->getName()), ['parse_str', 'mb_parse_str'], true)
+			&& $parameter->getName() === 'result';
+	}
+
+	public function getParameterOutTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, ParameterReflection $parameter, Scope $scope): ?Type
+	{
+		$args = $funcCall->getArgs();
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$stringType = $scope->getType($args[0]->value);
+		$accessory = [];
+		if ($stringType->isLowercaseString()->yes()) {
+			$accessory[] = new AccessoryLowercaseStringType();
+		}
+		if ($stringType->isUppercaseString()->yes()) {
+			$accessory[] = new AccessoryUppercaseStringType();
+		}
+		if (count($accessory) > 0) {
+			$accessory[] = new StringType();
+			$valueType = new IntersectionType($accessory);
+		} else {
+			$valueType = new StringType();
+		}
+
+		return new ArrayType(
+			new UnionType([new StringType(), new IntegerType()]),
+			new UnionType([new ArrayType(new MixedType(), new MixedType(true)), $valueType]),
+		);
+	}
+
+}
diff --git a/src/Type/Php/ParseUrlFunctionDynamicReturnTypeExtension.php b/src/Type/Php/ParseUrlFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..b0549464
--- /dev/null
+++ b/src/Type/Php/ParseUrlFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,229 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use ValueError;
+use function count;
+use function parse_url;
+use const PHP_URL_FRAGMENT;
+use const PHP_URL_HOST;
+use const PHP_URL_PASS;
+use const PHP_URL_PATH;
+use const PHP_URL_PORT;
+use const PHP_URL_QUERY;
+use const PHP_URL_SCHEME;
+use const PHP_URL_USER;
+
+final class ParseUrlFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	/** @var array<int,Type>|null */
+	private ?array $componentTypesPairedConstants = null;
+
+	/** @var array<string,Type>|null */
+	private ?array $componentTypesPairedStrings = null;
+
+	/** @var array<int,Type>|null */
+	private ?array $componentTypesPairedConstantsForLowercaseString = null;
+
+	/** @var array<string,Type>|null */
+	private ?array $componentTypesPairedStringsForLowercaseString = null;
+
+	private ?Type $allComponentsTogetherType = null;
+
+	private ?Type $allComponentsTogetherTypeForLowercaseString = null;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'parse_url';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		$this->cacheReturnTypes();
+
+		$urlType = $scope->getType($functionCall->getArgs()[0]->value);
+		if (count($functionCall->getArgs()) > 1) {
+			$componentType = $scope->getType($functionCall->getArgs()[1]->value);
+
+			if (!$componentType->isConstantValue()->yes()) {
+				return $this->createAllComponentsReturnType($urlType->isLowercaseString()->yes());
+			}
+
+			$componentType = $componentType->toInteger();
+			if (!$componentType instanceof ConstantIntegerType) {
+				return $this->createAllComponentsReturnType($urlType->isLowercaseString()->yes());
+			}
+		} else {
+			$componentType = new ConstantIntegerType(-1);
+		}
+
+		if (count($urlType->getConstantStrings()) > 0) {
+			$types = [];
+			foreach ($urlType->getConstantStrings() as $constantString) {
+				try {
+					$result = @parse_url($constantString->getValue(), $componentType->getValue());
+				} catch (ValueError) {
+					$types[] = new ConstantBooleanType(false);
+					continue;
+				}
+
+				$types[] = $scope->getTypeFromValue($result);
+			}
+
+			return TypeCombinator::union(...$types);
+		}
+
+		if ($componentType->getValue() === -1) {
+			return TypeCombinator::union(
+				$this->createComponentsArray($urlType->isLowercaseString()->yes()),
+				new ConstantBooleanType(false),
+			);
+		}
+
+		if ($urlType->isLowercaseString()->yes()) {
+			return $this->componentTypesPairedConstantsForLowercaseString[$componentType->getValue()] ?? new ConstantBooleanType(false);
+		}
+
+		return $this->componentTypesPairedConstants[$componentType->getValue()] ?? new ConstantBooleanType(false);
+	}
+
+	private function createAllComponentsReturnType(bool $urlIsLowercase): Type
+	{
+		if ($urlIsLowercase) {
+			if ($this->allComponentsTogetherTypeForLowercaseString === null) {
+				$returnTypes = [
+					new ConstantBooleanType(false),
+					new NullType(),
+					IntegerRangeType::fromInterval(0, 65535),
+					new IntersectionType([new StringType(), new AccessoryLowercaseStringType()]),
+					$this->createComponentsArray(true),
+				];
+
+				$this->allComponentsTogetherTypeForLowercaseString = TypeCombinator::union(...$returnTypes);
+			}
+
+			return $this->allComponentsTogetherTypeForLowercaseString;
+		}
+
+		if ($this->allComponentsTogetherType === null) {
+			$returnTypes = [
+				new ConstantBooleanType(false),
+				new NullType(),
+				IntegerRangeType::fromInterval(0, 65535),
+				new StringType(),
+				$this->createComponentsArray(false),
+			];
+
+			$this->allComponentsTogetherType = TypeCombinator::union(...$returnTypes);
+		}
+
+		return $this->allComponentsTogetherType;
+	}
+
+	private function createComponentsArray(bool $urlIsLowercase): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		if ($urlIsLowercase) {
+			if ($this->componentTypesPairedStringsForLowercaseString === null) {
+				throw new ShouldNotHappenException();
+			}
+
+			foreach ($this->componentTypesPairedStringsForLowercaseString as $componentName => $componentValueType) {
+				$builder->setOffsetValueType(new ConstantStringType($componentName), $componentValueType, true);
+			}
+		} else {
+			if ($this->componentTypesPairedStrings === null) {
+				throw new ShouldNotHappenException();
+			}
+
+			foreach ($this->componentTypesPairedStrings as $componentName => $componentValueType) {
+				$builder->setOffsetValueType(new ConstantStringType($componentName), $componentValueType, true);
+			}
+		}
+
+		return $builder->getArray();
+	}
+
+	private function cacheReturnTypes(): void
+	{
+		if ($this->componentTypesPairedConstants !== null) {
+			return;
+		}
+
+		$string = new StringType();
+		$lowercaseString = new IntersectionType([new StringType(), new AccessoryLowercaseStringType()]);
+		$port = IntegerRangeType::fromInterval(0, 65535);
+		$false = new ConstantBooleanType(false);
+		$null = new NullType();
+
+		$stringOrFalseOrNull = TypeCombinator::union($string, $false, $null);
+		$lowercaseStringOrFalseOrNull = TypeCombinator::union($lowercaseString, $false, $null);
+		$portOrFalseOrNull = TypeCombinator::union($port, $false, $null);
+
+		$this->componentTypesPairedConstants = [
+			PHP_URL_SCHEME => $stringOrFalseOrNull,
+			PHP_URL_HOST => $stringOrFalseOrNull,
+			PHP_URL_PORT => $portOrFalseOrNull,
+			PHP_URL_USER => $stringOrFalseOrNull,
+			PHP_URL_PASS => $stringOrFalseOrNull,
+			PHP_URL_PATH => $stringOrFalseOrNull,
+			PHP_URL_QUERY => $stringOrFalseOrNull,
+			PHP_URL_FRAGMENT => $stringOrFalseOrNull,
+		];
+		$this->componentTypesPairedConstantsForLowercaseString = [
+			PHP_URL_SCHEME => $lowercaseStringOrFalseOrNull,
+			PHP_URL_HOST => $lowercaseStringOrFalseOrNull,
+			PHP_URL_PORT => $portOrFalseOrNull,
+			PHP_URL_USER => $lowercaseStringOrFalseOrNull,
+			PHP_URL_PASS => $lowercaseStringOrFalseOrNull,
+			PHP_URL_PATH => $lowercaseStringOrFalseOrNull,
+			PHP_URL_QUERY => $lowercaseStringOrFalseOrNull,
+			PHP_URL_FRAGMENT => $lowercaseStringOrFalseOrNull,
+		];
+
+		$this->componentTypesPairedStrings = [
+			'scheme' => $string,
+			'host' => $string,
+			'port' => $port,
+			'user' => $string,
+			'pass' => $string,
+			'path' => $string,
+			'query' => $string,
+			'fragment' => $string,
+		];
+		$this->componentTypesPairedStringsForLowercaseString = [
+			'scheme' => $lowercaseString,
+			'host' => $lowercaseString,
+			'port' => $port,
+			'user' => $lowercaseString,
+			'pass' => $lowercaseString,
+			'path' => $lowercaseString,
+			'query' => $lowercaseString,
+			'fragment' => $lowercaseString,
+		];
+	}
+
+}
diff --git a/src/Type/Php/PathinfoFunctionDynamicReturnTypeExtension.php b/src/Type/Php/PathinfoFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..6742f87e
--- /dev/null
+++ b/src/Type/Php/PathinfoFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,99 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function sprintf;
+
+final class PathinfoFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'pathinfo';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		Node\Expr\FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$argsCount = count($functionCall->getArgs());
+		if ($argsCount === 0) {
+			return null;
+		}
+
+		$pathType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+		$builder->setOffsetValueType(new ConstantStringType('dirname'), new StringType(), !$pathType->isNonEmptyString()->yes());
+		$builder->setOffsetValueType(new ConstantStringType('basename'), new StringType());
+		$builder->setOffsetValueType(new ConstantStringType('extension'), new StringType(), true);
+		$builder->setOffsetValueType(new ConstantStringType('filename'), new StringType());
+		$arrayType = $builder->getArray();
+
+		if ($argsCount === 1) {
+			return $arrayType;
+		}
+
+		$flagsType = $scope->getType($functionCall->getArgs()[1]->value);
+
+		$scalarValues = $flagsType->getConstantScalarValues();
+		if ($scalarValues !== []) {
+			$pathInfoAll = $this->getConstant('PATHINFO_ALL');
+			if ($pathInfoAll === null) {
+				return null;
+			}
+
+			$result = [];
+			foreach ($scalarValues as $scalarValue) {
+				if ($scalarValue === $pathInfoAll) {
+					$result[] = $arrayType;
+				} else {
+					$result[] = new StringType();
+				}
+			}
+
+			return TypeCombinator::union(...$result);
+		}
+
+		return TypeCombinator::union($arrayType, new StringType());
+	}
+
+	/**
+	 * @param non-empty-string $constantName
+	 */
+	private function getConstant(string $constantName): ?int
+	{
+		if (!$this->reflectionProvider->hasConstant(new Node\Name($constantName), null)) {
+			return null;
+		}
+
+		$constant = $this->reflectionProvider->getConstant(new Node\Name($constantName), null);
+		$valueType = $constant->getValueType();
+		if (!$valueType instanceof ConstantIntegerType) {
+			throw new ShouldNotHappenException(sprintf('Constant %s does not have integer type.', $constantName));
+		}
+
+		return $valueType->getValue();
+	}
+
+}
diff --git a/src/Type/Php/PowFunctionReturnTypeExtension.php b/src/Type/Php/PowFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..9c263628
--- /dev/null
+++ b/src/Type/Php/PowFunctionReturnTypeExtension.php
@@ -0,0 +1,31 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\BinaryOp\Pow;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+
+final class PowFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'pow';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		return $scope->getType(new Pow($functionCall->getArgs()[0]->value, $functionCall->getArgs()[1]->value));
+	}
+
+}
diff --git a/src/Type/Php/PregFilterFunctionReturnTypeExtension.php b/src/Type/Php/PregFilterFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..8b27e271
--- /dev/null
+++ b/src/Type/Php/PregFilterFunctionReturnTypeExtension.php
@@ -0,0 +1,52 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class PregFilterFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'preg_filter';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$defaultReturn = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+
+		$argsCount = count($functionCall->getArgs());
+		if ($argsCount < 3) {
+			return $defaultReturn;
+		}
+
+		$subjectType = $scope->getType($functionCall->getArgs()[2]->value);
+
+		if ($subjectType->isArray()->yes()) {
+			return new ArrayType(new IntegerType(), new StringType());
+		}
+		if ($subjectType->isString()->yes()) {
+			return new UnionType([new StringType(), new NullType()]);
+		}
+
+		return $defaultReturn;
+	}
+
+}
diff --git a/src/Type/Php/PregMatchParameterOutTypeExtension.php b/src/Type/Php/PregMatchParameterOutTypeExtension.php
new file mode 100644
index 00000000..23031e36
--- /dev/null
+++ b/src/Type/Php/PregMatchParameterOutTypeExtension.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\FunctionParameterOutTypeExtension;
+use PHPStan\Type\Type;
+use function in_array;
+use function strtolower;
+
+final class PregMatchParameterOutTypeExtension implements FunctionParameterOutTypeExtension
+{
+
+	public function __construct(
+		private RegexArrayShapeMatcher $regexShapeMatcher,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool
+	{
+		return in_array(strtolower($functionReflection->getName()), ['preg_match', 'preg_match_all'], true)
+			// the parameter is named different, depending on PHP version.
+			&& in_array($parameter->getName(), ['subpatterns', 'matches'], true);
+	}
+
+	public function getParameterOutTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $funcCall, ParameterReflection $parameter, Scope $scope): ?Type
+	{
+		$args = $funcCall->getArgs();
+		$patternArg = $args[0] ?? null;
+		$matchesArg = $args[2] ?? null;
+		$flagsArg = $args[3] ?? null;
+
+		if (
+			$patternArg === null || $matchesArg === null
+		) {
+			return null;
+		}
+
+		$flagsType = null;
+		if ($flagsArg !== null) {
+			$flagsType = $scope->getType($flagsArg->value);
+		}
+
+		if ($functionReflection->getName() === 'preg_match') {
+			return $this->regexShapeMatcher->matchExpr($patternArg->value, $flagsType, TrinaryLogic::createMaybe(), $scope);
+		}
+		return $this->regexShapeMatcher->matchAllExpr($patternArg->value, $flagsType, TrinaryLogic::createMaybe(), $scope);
+	}
+
+}
diff --git a/src/Type/Php/PregMatchTypeSpecifyingExtension.php b/src/Type/Php/PregMatchTypeSpecifyingExtension.php
new file mode 100644
index 00000000..773f1501
--- /dev/null
+++ b/src/Type/Php/PregMatchTypeSpecifyingExtension.php
@@ -0,0 +1,85 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use function in_array;
+use function strtolower;
+
+final class PregMatchTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(
+		private RegexArrayShapeMatcher $regexShapeMatcher,
+	)
+	{
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return in_array(strtolower($functionReflection->getName()), ['preg_match', 'preg_match_all'], true) && !$context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$args = $node->getArgs();
+		$patternArg = $args[0] ?? null;
+		$matchesArg = $args[2] ?? null;
+		$flagsArg = $args[3] ?? null;
+
+		if (
+			$patternArg === null || $matchesArg === null
+		) {
+			return new SpecifiedTypes();
+		}
+
+		$flagsType = null;
+		if ($flagsArg !== null) {
+			$flagsType = $scope->getType($flagsArg->value);
+		}
+
+		if ($functionReflection->getName() === 'preg_match') {
+			$matchedType = $this->regexShapeMatcher->matchExpr($patternArg->value, $flagsType, TrinaryLogic::createFromBoolean($context->true()), $scope);
+		} else {
+			$matchedType = $this->regexShapeMatcher->matchAllExpr($patternArg->value, $flagsType, TrinaryLogic::createFromBoolean($context->true()), $scope);
+		}
+		if ($matchedType === null) {
+			return new SpecifiedTypes();
+		}
+
+		$overwrite = false;
+		if ($context->false()) {
+			$overwrite = true;
+			$context = $context->negate();
+		}
+
+		$types = $this->typeSpecifier->create(
+			$matchesArg->value,
+			$matchedType,
+			$context,
+			$scope,
+		)->setRootExpr($node);
+		if ($overwrite) {
+			$types = $types->setAlwaysOverwriteTypes();
+		}
+
+		return $types;
+	}
+
+}
diff --git a/src/Type/Php/PregReplaceCallbackClosureTypeExtension.php b/src/Type/Php/PregReplaceCallbackClosureTypeExtension.php
new file mode 100644
index 00000000..62a3d455
--- /dev/null
+++ b/src/Type/Php/PregReplaceCallbackClosureTypeExtension.php
@@ -0,0 +1,61 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\Native\NativeParameterReflection;
+use PHPStan\Reflection\ParameterReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ClosureType;
+use PHPStan\Type\FunctionParameterClosureTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+
+final class PregReplaceCallbackClosureTypeExtension implements FunctionParameterClosureTypeExtension
+{
+
+	public function __construct(
+		private RegexArrayShapeMatcher $regexShapeMatcher,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, ParameterReflection $parameter): bool
+	{
+		return $functionReflection->getName() === 'preg_replace_callback' && $parameter->getName() === 'callback';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, ParameterReflection $parameter, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+		$patternArg = $args[0] ?? null;
+		$flagsArg = $args[5] ?? null;
+
+		if (
+			$patternArg === null
+		) {
+			return null;
+		}
+
+		$flagsType = null;
+		if ($flagsArg !== null) {
+			$flagsType = $scope->getType($flagsArg->value);
+		}
+
+		$matchesType = $this->regexShapeMatcher->matchExpr($patternArg->value, $flagsType, TrinaryLogic::createYes(), $scope);
+		if ($matchesType === null) {
+			return null;
+		}
+
+		return new ClosureType(
+			[
+				new NativeParameterReflection($parameter->getName(), $parameter->isOptional(), $matchesType, $parameter->passedByReference(), $parameter->isVariadic(), $parameter->getDefaultValue()),
+			],
+			new StringType(),
+		);
+	}
+
+}
diff --git a/src/Type/Php/PregSplitDynamicReturnTypeExtension.php b/src/Type/Php/PregSplitDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..3c41ad62
--- /dev/null
+++ b/src/Type/Php/PregSplitDynamicReturnTypeExtension.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BitwiseFlagHelper;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function strtolower;
+
+final class PregSplitDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(
+		private BitwiseFlagHelper $bitwiseFlagAnalyser,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return strtolower($functionReflection->getName()) === 'preg_split';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$flagsArg = $functionCall->getArgs()[3] ?? null;
+
+		if ($flagsArg !== null && $this->bitwiseFlagAnalyser->bitwiseOrContainsConstant($flagsArg->value, $scope, 'PREG_SPLIT_OFFSET_CAPTURE')->yes()) {
+			$type = new ArrayType(
+				new IntegerType(),
+				new ConstantArrayType([new ConstantIntegerType(0), new ConstantIntegerType(1)], [new StringType(), IntegerRangeType::fromInterval(0, null)], [2], [], TrinaryLogic::createYes()),
+			);
+			return TypeCombinator::union(TypeCombinator::intersect($type, new AccessoryArrayListType()), new ConstantBooleanType(false));
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/PropertyExistsTypeSpecifyingExtension.php b/src/Type/Php/PropertyExistsTypeSpecifyingExtension.php
new file mode 100644
index 00000000..824e2037
--- /dev/null
+++ b/src/Type/Php/PropertyExistsTypeSpecifyingExtension.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\PropertyFetch;
+use PhpParser\Node\Identifier;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Rules\Properties\PropertyReflectionFinder;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\ObjectWithoutClassType;
+use function count;
+
+final class PropertyExistsTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function __construct(private PropertyReflectionFinder $propertyReflectionFinder)
+	{
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		TypeSpecifierContext $context,
+	): bool
+	{
+		return $functionReflection->getName() === 'property_exists'
+			&& $context->true()
+			&& count($node->getArgs()) >= 2;
+	}
+
+	public function specifyTypes(
+		FunctionReflection $functionReflection,
+		FuncCall $node,
+		Scope $scope,
+		TypeSpecifierContext $context,
+	): SpecifiedTypes
+	{
+		$propertyNameType = $scope->getType($node->getArgs()[1]->value);
+		if (!$propertyNameType instanceof ConstantStringType) {
+			return new SpecifiedTypes([], []);
+		}
+
+		$objectType = $scope->getType($node->getArgs()[0]->value);
+		if ($objectType instanceof ConstantStringType) {
+			return new SpecifiedTypes([], []);
+		} elseif ($objectType->isObject()->yes()) {
+			$propertyNode = new PropertyFetch(
+				$node->getArgs()[0]->value,
+				new Identifier($propertyNameType->getValue()),
+			);
+		} else {
+			return new SpecifiedTypes([], []);
+		}
+
+		$propertyReflection = $this->propertyReflectionFinder->findPropertyReflectionFromNode($propertyNode, $scope);
+		if ($propertyReflection !== null) {
+			if (!$propertyReflection->isNative()) {
+				return new SpecifiedTypes([], []);
+			}
+		}
+
+		return $this->typeSpecifier->create(
+			$node->getArgs()[0]->value,
+			new IntersectionType([
+				new ObjectWithoutClassType(),
+				new HasPropertyType($propertyNameType->getValue()),
+			]),
+			$context,
+			$scope,
+		);
+	}
+
+}
diff --git a/src/Type/Php/RandomIntFunctionReturnTypeExtension.php b/src/Type/Php/RandomIntFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..ffb240cf
--- /dev/null
+++ b/src/Type/Php/RandomIntFunctionReturnTypeExtension.php
@@ -0,0 +1,82 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function array_map;
+use function assert;
+use function count;
+use function in_array;
+use function max;
+use function min;
+
+final class RandomIntFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['random_int', 'rand', 'mt_rand'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (in_array($functionReflection->getName(), ['rand', 'mt_rand'], true) && count($functionCall->getArgs()) === 0) {
+			return IntegerRangeType::fromInterval(0, null);
+		}
+
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$minType = $scope->getType($functionCall->getArgs()[0]->value)->toInteger();
+		$maxType = $scope->getType($functionCall->getArgs()[1]->value)->toInteger();
+
+		return $this->createRange($minType, $maxType);
+	}
+
+	private function createRange(Type $minType, Type $maxType): Type
+	{
+		$minValues = array_map(
+			static function (Type $type): ?int {
+				if ($type instanceof IntegerRangeType) {
+					return $type->getMin();
+				}
+				if ($type instanceof ConstantIntegerType) {
+					return $type->getValue();
+				}
+				return null;
+			},
+			$minType instanceof UnionType ? $minType->getTypes() : [$minType],
+		);
+
+		$maxValues = array_map(
+			static function (Type $type): ?int {
+				if ($type instanceof IntegerRangeType) {
+					return $type->getMax();
+				}
+				if ($type instanceof ConstantIntegerType) {
+					return $type->getValue();
+				}
+				return null;
+			},
+			$maxType instanceof UnionType ? $maxType->getTypes() : [$maxType],
+		);
+
+		assert(count($minValues) > 0);
+		assert(count($maxValues) > 0);
+
+		return IntegerRangeType::fromInterval(
+			in_array(null, $minValues, true) ? null : min($minValues),
+			in_array(null, $maxValues, true) ? null : max($maxValues),
+		);
+	}
+
+}
diff --git a/src/Type/Php/RangeFunctionReturnTypeExtension.php b/src/Type/Php/RangeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..85594dae
--- /dev/null
+++ b/src/Type/Php/RangeFunctionReturnTypeExtension.php
@@ -0,0 +1,173 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\UnionType;
+use ValueError;
+use function count;
+use function is_array;
+use function range;
+
+final class RangeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const RANGE_LENGTH_THRESHOLD = 50;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'range';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 2) {
+			return null;
+		}
+
+		$startType = $scope->getType($functionCall->getArgs()[0]->value);
+		$endType = $scope->getType($functionCall->getArgs()[1]->value);
+		$stepType = count($functionCall->getArgs()) >= 3 ? $scope->getType($functionCall->getArgs()[2]->value) : new ConstantIntegerType(1);
+
+		$constantReturnTypes = [];
+
+		$startConstants = $startType->getConstantScalarTypes();
+		foreach ($startConstants as $startConstant) {
+			if (!$startConstant instanceof ConstantIntegerType && !$startConstant instanceof ConstantFloatType && !$startConstant instanceof ConstantStringType) {
+				continue;
+			}
+
+			$endConstants = $endType->getConstantScalarTypes();
+			foreach ($endConstants as $endConstant) {
+				if (!$endConstant instanceof ConstantIntegerType && !$endConstant instanceof ConstantFloatType && !$endConstant instanceof ConstantStringType) {
+					continue;
+				}
+
+				$stepConstants = $stepType->getConstantScalarTypes();
+				foreach ($stepConstants as $stepConstant) {
+					if (!$stepConstant instanceof ConstantIntegerType && !$stepConstant instanceof ConstantFloatType) {
+						continue;
+					}
+
+					try {
+						$rangeValues = @range($startConstant->getValue(), $endConstant->getValue(), $stepConstant->getValue());
+					} catch (ValueError) {
+						continue;
+					}
+
+					// @phpstan-ignore function.alreadyNarrowedType
+					if (!is_array($rangeValues)) {
+						continue;
+					}
+
+					if (count($rangeValues) > self::RANGE_LENGTH_THRESHOLD) {
+						if (
+							$startConstant instanceof ConstantIntegerType
+							&& $endConstant instanceof ConstantIntegerType
+							&& $stepConstant instanceof ConstantIntegerType
+						) {
+							if ($startConstant->getValue() > $endConstant->getValue()) {
+								$tmp = $startConstant;
+								$startConstant = $endConstant;
+								$endConstant = $tmp;
+							}
+							return TypeCombinator::intersect(
+								new ArrayType(
+									new IntegerType(),
+									IntegerRangeType::fromInterval($startConstant->getValue(), $endConstant->getValue()),
+								),
+								new NonEmptyArrayType(),
+								new AccessoryArrayListType(),
+							);
+						}
+
+						if ($stepType->isFloat()->yes()) {
+							return TypeCombinator::intersect(
+								new ArrayType(
+									new IntegerType(),
+									new FloatType(),
+								),
+								new NonEmptyArrayType(),
+								new AccessoryArrayListType(),
+							);
+						}
+
+						return TypeCombinator::intersect(
+							new ArrayType(
+								new IntegerType(),
+								TypeCombinator::union(
+									$startConstant->generalize(GeneralizePrecision::moreSpecific()),
+									$endConstant->generalize(GeneralizePrecision::moreSpecific()),
+									$stepType->generalize(GeneralizePrecision::moreSpecific()),
+								),
+							),
+							new NonEmptyArrayType(),
+							new AccessoryArrayListType(),
+						);
+					}
+					$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+					foreach ($rangeValues as $value) {
+						$arrayBuilder->setOffsetValueType(null, $scope->getTypeFromValue($value));
+					}
+
+					$constantReturnTypes[] = $arrayBuilder->getArray();
+				}
+			}
+		}
+
+		if (count($constantReturnTypes) > 0) {
+			return TypeCombinator::union(...$constantReturnTypes);
+		}
+
+		$argType = TypeCombinator::union($startType, $endType);
+		$isInteger = $argType->isInteger()->yes();
+		$isStepInteger = $stepType->isInteger()->yes();
+
+		if ($isInteger && $isStepInteger) {
+			if ($argType instanceof IntegerRangeType) {
+				return TypeCombinator::intersect(new ArrayType(new IntegerType(), $argType), new AccessoryArrayListType());
+			}
+			return TypeCombinator::intersect(new ArrayType(new IntegerType(), new IntegerType()), new AccessoryArrayListType());
+		}
+
+		if ($argType->isFloat()->yes()) {
+			return TypeCombinator::intersect(new ArrayType(new IntegerType(), new FloatType()), new AccessoryArrayListType());
+		}
+
+		$numberType = new UnionType([new IntegerType(), new FloatType()]);
+		$isNumber = $numberType->isSuperTypeOf($argType)->yes();
+		$isNumericString = $argType->isNumericString()->yes();
+		if ($isNumber || $isNumericString) {
+			return TypeCombinator::intersect(new ArrayType(new IntegerType(), $numberType), new AccessoryArrayListType());
+		}
+
+		if ($argType->isString()->yes()) {
+			return TypeCombinator::intersect(new ArrayType(new IntegerType(), new StringType()), new AccessoryArrayListType());
+		}
+
+		return TypeCombinator::intersect(new ArrayType(
+			new IntegerType(),
+			new BenevolentUnionType([new IntegerType(), new FloatType(), new StringType()]),
+		), new AccessoryArrayListType());
+	}
+
+}
diff --git a/src/Type/Php/ReflectionClassConstructorThrowTypeExtension.php b/src/Type/Php/ReflectionClassConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..8651e659
--- /dev/null
+++ b/src/Type/Php/ReflectionClassConstructorThrowTypeExtension.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\ClassStringType;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use ReflectionClass;
+use function count;
+
+final class ReflectionClassConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === ReflectionClass::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) < 1) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$classOrString = new UnionType([
+			new ClassStringType(),
+			new ObjectWithoutClassType(),
+		]);
+		if ($classOrString->isSuperTypeOf($valueType)->yes()) {
+			return null;
+		}
+
+		return $methodReflection->getThrowType();
+	}
+
+}
diff --git a/src/Type/Php/ReflectionClassIsSubclassOfTypeSpecifyingExtension.php b/src/Type/Php/ReflectionClassIsSubclassOfTypeSpecifyingExtension.php
new file mode 100644
index 00000000..700e5327
--- /dev/null
+++ b/src/Type/Php/ReflectionClassIsSubclassOfTypeSpecifyingExtension.php
@@ -0,0 +1,72 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\MethodTypeSpecifyingExtension;
+use PHPStan\Type\ObjectWithoutClassType;
+use PHPStan\Type\TypeCombinator;
+use ReflectionClass;
+
+final class ReflectionClassIsSubclassOfTypeSpecifyingExtension implements MethodTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function getClass(): string
+	{
+		return ReflectionClass::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection, MethodCall $node, TypeSpecifierContext $context): bool
+	{
+		return $methodReflection->getName() === 'isSubclassOf'
+			&& isset($node->getArgs()[0])
+			&& !$context->null();
+	}
+
+	public function specifyTypes(MethodReflection $methodReflection, MethodCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$calledOnType = $scope->getType($node->var);
+		$reflectionType = $calledOnType->getTemplateType(ReflectionClass::class, 'T');
+		if (!(new ObjectWithoutClassType())->isSuperTypeOf($reflectionType)->yes()) {
+			return new SpecifiedTypes();
+		}
+
+		$valueType = $scope->getType($node->getArgs()[0]->value);
+		$objectType = $valueType->getClassStringObjectType();
+
+		$intersected = TypeCombinator::intersect($reflectionType, $objectType);
+		$narrowingType = new GenericObjectType(ReflectionClass::class, [$intersected]);
+
+		if ($reflectionType->isSuperTypeOf($objectType)->no()) {
+			return $this->typeSpecifier->create(
+				$node->var,
+				$narrowingType,
+				$context,
+				$scope,
+			);
+		}
+
+		return $this->typeSpecifier->create(
+			$node->var,
+			$narrowingType,
+			$context,
+			$scope,
+		)->setAlwaysOverwriteTypes();
+	}
+
+}
diff --git a/src/Type/Php/ReflectionFunctionConstructorThrowTypeExtension.php b/src/Type/Php/ReflectionFunctionConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..b9b7ba1c
--- /dev/null
+++ b/src/Type/Php/ReflectionFunctionConstructorThrowTypeExtension.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use ReflectionFunction;
+use function count;
+
+final class ReflectionFunctionConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === ReflectionFunction::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) < 1) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		foreach ($valueType->getConstantStrings() as $constantString) {
+			if ($constantString->getValue() === '') {
+				return null;
+			}
+
+			if (!$this->reflectionProvider->hasFunction(new Name($constantString->getValue()), $scope)) {
+				return $methodReflection->getThrowType();
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ReflectionGetAttributesMethodReturnTypeExtension.php b/src/Type/Php/ReflectionGetAttributesMethodReturnTypeExtension.php
new file mode 100644
index 00000000..18f5e44f
--- /dev/null
+++ b/src/Type/Php/ReflectionGetAttributesMethodReturnTypeExtension.php
@@ -0,0 +1,51 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use ReflectionAttribute;
+use function count;
+
+final class ReflectionGetAttributesMethodReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	/**
+	 * @param class-string $className One of reflection classes: https://www.php.net/manual/en/book.reflection.php
+	 */
+	public function __construct(private string $className)
+	{
+	}
+
+	public function getClass(): string
+	{
+		return $this->className;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getDeclaringClass()->getName() === $this->className
+			&& $methodReflection->getName() === 'getAttributes';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return null;
+		}
+		$argType = $scope->getType($methodCall->getArgs()[0]->value);
+		$classType = $argType->getClassStringObjectType();
+
+		return TypeCombinator::intersect(new ArrayType(new IntegerType(), new GenericObjectType(ReflectionAttribute::class, [$classType])), new AccessoryArrayListType());
+	}
+
+}
diff --git a/src/Type/Php/ReflectionMethodConstructorThrowTypeExtension.php b/src/Type/Php/ReflectionMethodConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..eebc6861
--- /dev/null
+++ b/src/Type/Php/ReflectionMethodConstructorThrowTypeExtension.php
@@ -0,0 +1,80 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use ReflectionMethod;
+use function count;
+
+final class ReflectionMethodConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === ReflectionMethod::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) < 2) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$propertyType = $scope->getType($methodCall->getArgs()[1]->value);
+		foreach (TypeUtils::flattenTypes($valueType) as $type) {
+			if ($type instanceof GenericClassStringType) {
+				$classes = $type->getGenericType()->getObjectClassNames();
+			} elseif (
+				$type instanceof ConstantStringType
+				&& $this->reflectionProvider->hasClass($type->getValue())
+			) {
+				$classes = [$type->getValue()];
+			} else {
+				return $methodReflection->getThrowType();
+			}
+
+			foreach ($classes as $class) {
+				$classReflection = $this->reflectionProvider->getClass($class);
+				foreach ($propertyType->getConstantStrings() as $constantPropertyString) {
+					if (!$classReflection->hasMethod($constantPropertyString->getValue())) {
+						return $methodReflection->getThrowType();
+					}
+				}
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $type);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		// Look for non constantStrings value.
+		foreach ($propertyType->getConstantStrings() as $constantPropertyString) {
+			$propertyType = TypeCombinator::remove($propertyType, $constantPropertyString);
+		}
+
+		if (!$propertyType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ReflectionPropertyConstructorThrowTypeExtension.php b/src/Type/Php/ReflectionPropertyConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..4148301d
--- /dev/null
+++ b/src/Type/Php/ReflectionPropertyConstructorThrowTypeExtension.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use ReflectionProperty;
+use function count;
+
+final class ReflectionPropertyConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function __construct(private ReflectionProvider $reflectionProvider)
+	{
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === '__construct' && $methodReflection->getDeclaringClass()->getName() === ReflectionProperty::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) < 2) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$propertyType = $scope->getType($methodCall->getArgs()[1]->value);
+		foreach ($valueType->getConstantStrings() as $constantString) {
+			if (!$this->reflectionProvider->hasClass($constantString->getValue())) {
+				return $methodReflection->getThrowType();
+			}
+
+			$classReflection = $this->reflectionProvider->getClass($constantString->getValue());
+			foreach ($propertyType->getConstantStrings() as $constantPropertyString) {
+				if (!$classReflection->hasProperty($constantPropertyString->getValue())) {
+					return $methodReflection->getThrowType();
+				}
+			}
+
+			$valueType = TypeCombinator::remove($valueType, $constantString);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		// Look for non constantStrings value.
+		foreach ($propertyType->getConstantStrings() as $constantPropertyString) {
+			$propertyType = TypeCombinator::remove($propertyType, $constantPropertyString);
+		}
+
+		if (!$propertyType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/RegexArrayShapeMatcher.php b/src/Type/Php/RegexArrayShapeMatcher.php
new file mode 100644
index 00000000..7611469e
--- /dev/null
+++ b/src/Type/Php/RegexArrayShapeMatcher.php
@@ -0,0 +1,540 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Regex\RegexAlternation;
+use PHPStan\Type\Regex\RegexCapturingGroup;
+use PHPStan\Type\Regex\RegexExpressionHelper;
+use PHPStan\Type\Regex\RegexGroupParser;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_reverse;
+use function count;
+use function in_array;
+use function is_string;
+use const PREG_OFFSET_CAPTURE;
+use const PREG_PATTERN_ORDER;
+use const PREG_SET_ORDER;
+use const PREG_UNMATCHED_AS_NULL;
+
+/**
+ * @api
+ */
+final class RegexArrayShapeMatcher
+{
+
+	/**
+	 * Pass this into $flagsType as well if the library supports emulating PREG_UNMATCHED_AS_NULL on PHP 7.2 and 7.3
+	 */
+	public const PREG_UNMATCHED_AS_NULL_ON_72_73 = 2048;
+
+	public function __construct(
+		private RegexGroupParser $regexGroupParser,
+		private RegexExpressionHelper $regexExpressionHelper,
+		private PhpVersion $phpVersion,
+	)
+	{
+	}
+
+	public function matchAllExpr(Expr $patternExpr, ?Type $flagsType, TrinaryLogic $wasMatched, Scope $scope): ?Type
+	{
+		return $this->matchPatternType($this->getPatternType($patternExpr, $scope), $flagsType, $wasMatched, true);
+	}
+
+	public function matchExpr(Expr $patternExpr, ?Type $flagsType, TrinaryLogic $wasMatched, Scope $scope): ?Type
+	{
+		return $this->matchPatternType($this->getPatternType($patternExpr, $scope), $flagsType, $wasMatched, false);
+	}
+
+	private function matchPatternType(Type $patternType, ?Type $flagsType, TrinaryLogic $wasMatched, bool $matchesAll): ?Type
+	{
+		if ($wasMatched->no()) {
+			return new ConstantArrayType([], []);
+		}
+
+		$constantStrings = $patternType->getConstantStrings();
+		if (count($constantStrings) === 0) {
+			return null;
+		}
+
+		$flags = null;
+		if ($flagsType !== null) {
+			if (!$flagsType instanceof ConstantIntegerType) {
+				return null;
+			}
+
+			/** @var int-mask<PREG_OFFSET_CAPTURE | PREG_PATTERN_ORDER | PREG_SET_ORDER | PREG_UNMATCHED_AS_NULL | self::PREG_UNMATCHED_AS_NULL_ON_72_73> $flags */
+			$flags = $flagsType->getValue() & (PREG_OFFSET_CAPTURE | PREG_PATTERN_ORDER | PREG_SET_ORDER | PREG_UNMATCHED_AS_NULL | self::PREG_UNMATCHED_AS_NULL_ON_72_73);
+
+			// some other unsupported/unexpected flag was passed in
+			if ($flags !== $flagsType->getValue()) {
+				return null;
+			}
+		}
+
+		$matchedTypes = [];
+		foreach ($constantStrings as $constantString) {
+			$matched = $this->matchRegex($constantString->getValue(), $flags, $wasMatched, $matchesAll);
+			if ($matched === null) {
+				return null;
+			}
+
+			$matchedTypes[] = $matched;
+		}
+
+		if (count($matchedTypes) === 1) {
+			return $matchedTypes[0];
+		}
+
+		return TypeCombinator::union(...$matchedTypes);
+	}
+
+	/**
+	 * @param int-mask<PREG_OFFSET_CAPTURE|PREG_PATTERN_ORDER|PREG_SET_ORDER|PREG_UNMATCHED_AS_NULL|self::PREG_UNMATCHED_AS_NULL_ON_72_73>|null $flags
+	 */
+	private function matchRegex(string $regex, ?int $flags, TrinaryLogic $wasMatched, bool $matchesAll): ?Type
+	{
+		$parseResult = $this->regexGroupParser->parseGroups($regex);
+		if ($parseResult === null) {
+			// regex could not be parsed by Hoa/Regex
+			return null;
+		}
+		[$groupList, $markVerbs] = $parseResult;
+
+		$trailingOptionals = 0;
+		foreach (array_reverse($groupList) as $captureGroup) {
+			if (!$captureGroup->isOptional()) {
+				break;
+			}
+			$trailingOptionals++;
+		}
+
+		$onlyOptionalTopLevelGroup = $this->getOnlyOptionalTopLevelGroup($groupList);
+		$onlyTopLevelAlternation = $this->getOnlyTopLevelAlternation($groupList);
+		$flags ??= 0;
+
+		if (
+			!$matchesAll
+			&& $wasMatched->yes()
+			&& $onlyOptionalTopLevelGroup !== null
+		) {
+			// if only one top level capturing optional group exists
+			// we build a more precise tagged union of a empty-match and a match with the group
+
+			$onlyOptionalTopLevelGroup->forceNonOptional();
+
+			$combiType = $this->buildArrayType(
+				$groupList,
+				$wasMatched,
+				$trailingOptionals,
+				$flags,
+				$markVerbs,
+				$matchesAll,
+			);
+
+			if (!$this->containsUnmatchedAsNull($flags, $matchesAll)) {
+				// positive match has a subject but not any capturing group
+				$combiType = TypeCombinator::union(
+					new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [1], [], TrinaryLogic::createYes()),
+					$combiType,
+				);
+			}
+
+			$onlyOptionalTopLevelGroup->clearOverrides();
+
+			return $combiType;
+		} elseif (
+			!$matchesAll
+			&& $onlyOptionalTopLevelGroup === null
+			&& $onlyTopLevelAlternation !== null
+			&& !$wasMatched->no()
+		) {
+			// if only a single top level alternation exist built a more precise tagged union
+
+			$combiTypes = [];
+			$isOptionalAlternation = false;
+			foreach ($onlyTopLevelAlternation->getGroupCombinations() as $groupCombo) {
+				$comboList = $groupList;
+
+				$beforeCurrentCombo = true;
+				foreach ($comboList as $groupId => $group) {
+					if (in_array($groupId, $groupCombo, true)) {
+						$isOptionalAlternation = $group->inOptionalAlternation();
+						$group->forceNonOptional();
+						$beforeCurrentCombo = false;
+					} elseif ($beforeCurrentCombo && !$group->resetsGroupCounter()) {
+						$group->forceNonOptional();
+						$group->forceType(
+							$this->containsUnmatchedAsNull($flags, $matchesAll) ? new NullType() : new ConstantStringType(''),
+						);
+					} elseif (
+						$group->getAlternationId() === $onlyTopLevelAlternation->getId()
+						&& !$this->containsUnmatchedAsNull($flags, $matchesAll)
+					) {
+						unset($comboList[$groupId]);
+					}
+				}
+
+				$combiType = $this->buildArrayType(
+					$comboList,
+					$wasMatched,
+					$trailingOptionals,
+					$flags,
+					$markVerbs,
+					$matchesAll,
+				);
+
+				$combiTypes[] = $combiType;
+
+				foreach ($groupCombo as $groupId) {
+					$group = $comboList[$groupId];
+					$group->clearOverrides();
+				}
+			}
+
+			if (
+				!$this->containsUnmatchedAsNull($flags, $matchesAll)
+				&& (
+					$onlyTopLevelAlternation->getAlternationsCount() !== count($onlyTopLevelAlternation->getGroupCombinations())
+					|| $isOptionalAlternation
+				)
+			) {
+				// positive match has a subject but not any capturing group
+				$combiTypes[] = new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [1], [], TrinaryLogic::createYes());
+			}
+
+			return TypeCombinator::union(...$combiTypes);
+		}
+
+		// the general case, which should work in all cases but does not yield the most
+		// precise result possible in some cases
+		return $this->buildArrayType(
+			$groupList,
+			$wasMatched,
+			$trailingOptionals,
+			$flags,
+			$markVerbs,
+			$matchesAll,
+		);
+	}
+
+	/**
+	 * @param array<int, RegexCapturingGroup> $captureGroups
+	 */
+	private function getOnlyOptionalTopLevelGroup(array $captureGroups): ?RegexCapturingGroup
+	{
+		$group = null;
+		foreach ($captureGroups as $captureGroup) {
+			if (!$captureGroup->isTopLevel()) {
+				continue;
+			}
+
+			if (!$captureGroup->isOptional()) {
+				return null;
+			}
+
+			if ($group !== null) {
+				return null;
+			}
+
+			$group = $captureGroup;
+		}
+
+		return $group;
+	}
+
+	/**
+	 * @param array<int, RegexCapturingGroup> $captureGroups
+	 */
+	private function getOnlyTopLevelAlternation(array $captureGroups): ?RegexAlternation
+	{
+		$alternation = null;
+		foreach ($captureGroups as $captureGroup) {
+			if (!$captureGroup->isTopLevel()) {
+				continue;
+			}
+
+			if (!$captureGroup->inAlternation()) {
+				return null;
+			}
+
+			if ($captureGroup->inOptionalQuantification()) {
+				return null;
+			}
+
+			if ($alternation === null) {
+				$alternation = $captureGroup->getAlternation();
+			} elseif ($alternation->getId() !== $captureGroup->getAlternation()->getId()) {
+				return null;
+			}
+		}
+
+		return $alternation;
+	}
+
+	/**
+	 * @param array<RegexCapturingGroup> $captureGroups
+	 * @param list<string> $markVerbs
+	 */
+	private function buildArrayType(
+		array $captureGroups,
+		TrinaryLogic $wasMatched,
+		int $trailingOptionals,
+		int $flags,
+		array $markVerbs,
+		bool $matchesAll,
+	): Type
+	{
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+
+		// first item in matches contains the overall match.
+		$builder->setOffsetValueType(
+			$this->getKeyType(0),
+			$this->createSubjectValueType($flags, $matchesAll),
+			$this->isSubjectOptional($wasMatched, $matchesAll),
+		);
+
+		$countGroups = count($captureGroups);
+		$i = 0;
+		foreach ($captureGroups as $captureGroup) {
+			$isTrailingOptional = $i >= $countGroups - $trailingOptionals;
+			$isLastGroup = $i === $countGroups - 1;
+			$groupValueType = $this->createGroupValueType($captureGroup, $wasMatched, $flags, $isTrailingOptional, $isLastGroup, $matchesAll);
+			$optional = $this->isGroupOptional($captureGroup, $wasMatched, $flags, $isTrailingOptional, $matchesAll);
+
+			if ($captureGroup->isNamed()) {
+				$builder->setOffsetValueType(
+					$this->getKeyType($captureGroup->getName()),
+					$groupValueType,
+					$optional,
+				);
+			}
+
+			$builder->setOffsetValueType(
+				$this->getKeyType($i + 1),
+				$groupValueType,
+				$optional,
+			);
+
+			$i++;
+		}
+
+		if (count($markVerbs) > 0) {
+			$markTypes = [];
+			foreach ($markVerbs as $mark) {
+				$markTypes[] = new ConstantStringType($mark);
+			}
+			$builder->setOffsetValueType(
+				$this->getKeyType('MARK'),
+				TypeCombinator::union(...$markTypes),
+				true,
+			);
+		}
+
+		if ($matchesAll && $this->containsSetOrder($flags)) {
+			$arrayType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $builder->getArray()), new AccessoryArrayListType());
+			if (!$wasMatched->yes()) {
+				$arrayType = TypeCombinator::union(
+					new ConstantArrayType([], []),
+					$arrayType,
+				);
+			}
+			return $arrayType;
+		}
+
+		return $builder->getArray();
+	}
+
+	private function isSubjectOptional(TrinaryLogic $wasMatched, bool $matchesAll): bool
+	{
+		if ($matchesAll) {
+			return false;
+		}
+
+		return !$wasMatched->yes();
+	}
+
+	private function createSubjectValueType(int $flags, bool $matchesAll): Type
+	{
+		$subjectValueType = TypeCombinator::removeNull($this->getValueType(new StringType(), $flags, $matchesAll));
+
+		if ($matchesAll) {
+			if ($this->containsPatternOrder($flags)) {
+				$subjectValueType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $subjectValueType), new AccessoryArrayListType());
+			}
+		}
+
+		return $subjectValueType;
+	}
+
+	private function isGroupOptional(RegexCapturingGroup $captureGroup, TrinaryLogic $wasMatched, int $flags, bool $isTrailingOptional, bool $matchesAll): bool
+	{
+		if ($matchesAll) {
+			if ($isTrailingOptional && !$this->containsUnmatchedAsNull($flags, $matchesAll) && $this->containsSetOrder($flags)) {
+				return true;
+			}
+
+			return false;
+		}
+
+		if (!$wasMatched->yes()) {
+			$optional = true;
+		} else {
+			if (!$isTrailingOptional) {
+				$optional = false;
+			} elseif ($this->containsUnmatchedAsNull($flags, $matchesAll)) {
+				$optional = false;
+			} else {
+				$optional = $captureGroup->isOptional();
+			}
+		}
+
+		return $optional;
+	}
+
+	private function createGroupValueType(RegexCapturingGroup $captureGroup, TrinaryLogic $wasMatched, int $flags, bool $isTrailingOptional, bool $isLastGroup, bool $matchesAll): Type
+	{
+		if ($matchesAll) {
+			if (
+				(
+					!$this->containsSetOrder($flags)
+					&& !$this->containsUnmatchedAsNull($flags, $matchesAll)
+					&& $captureGroup->isOptional()
+				)
+				||
+				(
+					$this->containsSetOrder($flags)
+					&& !$this->containsUnmatchedAsNull($flags, $matchesAll)
+					&& $captureGroup->isOptional()
+					&& !$isTrailingOptional
+				)
+			) {
+				$groupValueType = $this->getValueType(
+					TypeCombinator::union($captureGroup->getType(), new ConstantStringType('')),
+					$flags,
+					$matchesAll,
+				);
+				$groupValueType = TypeCombinator::removeNull($groupValueType);
+			} else {
+				$groupValueType = $this->getValueType($captureGroup->getType(), $flags, $matchesAll);
+			}
+
+			if (!$isTrailingOptional && $this->containsUnmatchedAsNull($flags, $matchesAll) && !$captureGroup->isOptional()) {
+				$groupValueType = TypeCombinator::removeNull($groupValueType);
+			}
+
+			if ($this->containsPatternOrder($flags)) {
+				$groupValueType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $groupValueType), new AccessoryArrayListType());
+			}
+
+			return $groupValueType;
+		}
+
+		if (!$isLastGroup && !$this->containsUnmatchedAsNull($flags, $matchesAll) && $captureGroup->isOptional()) {
+			$groupValueType = $this->getValueType(
+				TypeCombinator::union($captureGroup->getType(), new ConstantStringType('')),
+				$flags,
+				$matchesAll,
+			);
+		} else {
+			$groupValueType = $this->getValueType($captureGroup->getType(), $flags, $matchesAll);
+		}
+
+		if ($wasMatched->yes()) {
+			if (!$isTrailingOptional && $this->containsUnmatchedAsNull($flags, $matchesAll) && !$captureGroup->isOptional()) {
+				$groupValueType = TypeCombinator::removeNull($groupValueType);
+			}
+		}
+
+		return $groupValueType;
+	}
+
+	private function containsOffsetCapture(int $flags): bool
+	{
+		return ($flags & PREG_OFFSET_CAPTURE) !== 0;
+	}
+
+	private function containsPatternOrder(int $flags): bool
+	{
+		// If no order flag is given, PREG_PATTERN_ORDER is assumed.
+		return !$this->containsSetOrder($flags);
+	}
+
+	private function containsSetOrder(int $flags): bool
+	{
+		return ($flags & PREG_SET_ORDER) !== 0;
+	}
+
+	private function containsUnmatchedAsNull(int $flags, bool $matchesAll): bool
+	{
+		if ($matchesAll) {
+			// preg_match_all() with PREG_UNMATCHED_AS_NULL works consistently across php-versions
+			// https://3v4l.org/tKmPn
+			return ($flags & PREG_UNMATCHED_AS_NULL) !== 0;
+		}
+
+		return ($flags & PREG_UNMATCHED_AS_NULL) !== 0 && (($flags & self::PREG_UNMATCHED_AS_NULL_ON_72_73) !== 0 || $this->phpVersion->supportsPregUnmatchedAsNull());
+	}
+
+	private function getKeyType(int|string $key): Type
+	{
+		if (is_string($key)) {
+			return new ConstantStringType($key);
+		}
+
+		return new ConstantIntegerType($key);
+	}
+
+	private function getValueType(Type $baseType, int $flags, bool $matchesAll): Type
+	{
+		$valueType = $baseType;
+
+		// unmatched groups return -1 as offset
+		$offsetType = IntegerRangeType::fromInterval(-1, null);
+		if ($this->containsUnmatchedAsNull($flags, $matchesAll)) {
+			$valueType = TypeCombinator::addNull($valueType);
+		}
+
+		if ($this->containsOffsetCapture($flags)) {
+			$builder = ConstantArrayTypeBuilder::createEmpty();
+
+			$builder->setOffsetValueType(
+				new ConstantIntegerType(0),
+				$valueType,
+			);
+			$builder->setOffsetValueType(
+				new ConstantIntegerType(1),
+				$offsetType,
+			);
+
+			return $builder->getArray();
+		}
+
+		return $valueType;
+	}
+
+	private function getPatternType(Expr $patternExpr, Scope $scope): Type
+	{
+		if ($patternExpr instanceof Expr\BinaryOp\Concat) {
+			return $this->regexExpressionHelper->resolvePatternConcat($patternExpr, $scope);
+		}
+
+		return $scope->getType($patternExpr);
+	}
+
+}
diff --git a/src/Type/Php/ReplaceFunctionsDynamicReturnTypeExtension.php b/src/Type/Php/ReplaceFunctionsDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..c00355be
--- /dev/null
+++ b/src/Type/Php/ReplaceFunctionsDynamicReturnTypeExtension.php
@@ -0,0 +1,202 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_key_exists;
+use function count;
+use function in_array;
+
+final class ReplaceFunctionsDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const FUNCTIONS_SUBJECT_POSITION = [
+		'preg_replace' => 2,
+		'preg_replace_callback' => 2,
+		'preg_replace_callback_array' => 1,
+		'str_replace' => 2,
+		'str_ireplace' => 2,
+		'substr_replace' => 0,
+		'strtr' => 0,
+	];
+
+	private const FUNCTIONS_REPLACE_POSITION = [
+		'preg_replace' => 1,
+		'str_replace' => 1,
+		'str_ireplace' => 1,
+		'substr_replace' => 1,
+		'strtr' => 2,
+	];
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return array_key_exists($functionReflection->getName(), self::FUNCTIONS_SUBJECT_POSITION);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$type = $this->getPreliminarilyResolvedTypeFromFunctionCall($functionReflection, $functionCall, $scope);
+
+		if ($this->canReturnNull($functionReflection, $functionCall, $scope)) {
+			$type = TypeCombinator::addNull($type);
+		}
+
+		return $type;
+	}
+
+	private function getPreliminarilyResolvedTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$subjectArgumentType = $this->getSubjectType($functionReflection, $functionCall, $scope);
+		$defaultReturnType = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+
+		if ($subjectArgumentType === null) {
+			return $defaultReturnType;
+		}
+
+		if ($subjectArgumentType instanceof MixedType) {
+			return TypeUtils::toBenevolentUnion($defaultReturnType);
+		}
+
+		if (array_key_exists($functionReflection->getName(), self::FUNCTIONS_REPLACE_POSITION)) {
+			$replaceArgumentPosition = self::FUNCTIONS_REPLACE_POSITION[$functionReflection->getName()];
+
+			if (count($functionCall->getArgs()) > $replaceArgumentPosition) {
+				$replaceArgumentType = $scope->getType($functionCall->getArgs()[$replaceArgumentPosition]->value);
+
+				$accessories = [];
+				if ($subjectArgumentType->isNonFalsyString()->yes() && $replaceArgumentType->isNonFalsyString()->yes()) {
+					$accessories[] = new AccessoryNonFalsyStringType();
+				} elseif ($subjectArgumentType->isNonEmptyString()->yes() && $replaceArgumentType->isNonEmptyString()->yes()) {
+					$accessories[] = new AccessoryNonEmptyStringType();
+				}
+
+				if ($subjectArgumentType->isLowercaseString()->yes() && $replaceArgumentType->isLowercaseString()->yes()) {
+					$accessories[] = new AccessoryLowercaseStringType();
+				}
+
+				if ($subjectArgumentType->isUppercaseString()->yes() && $replaceArgumentType->isUppercaseString()->yes()) {
+					$accessories[] = new AccessoryUppercaseStringType();
+				}
+
+				if (count($accessories) > 0) {
+					$accessories[] = new StringType();
+					return new IntersectionType($accessories);
+				}
+			}
+		}
+
+		$isStringSuperType = $subjectArgumentType->isString();
+		$isArraySuperType = $subjectArgumentType->isArray();
+		$compareSuperTypes = $isStringSuperType->compareTo($isArraySuperType);
+		if ($compareSuperTypes === $isStringSuperType) {
+			return new StringType();
+		} elseif ($compareSuperTypes === $isArraySuperType) {
+			$subjectArrays = $subjectArgumentType->getArrays();
+			if (count($subjectArrays) > 0) {
+				$result = [];
+				foreach ($subjectArrays as $arrayType) {
+					$constantArrays = $arrayType->getConstantArrays();
+
+					if (
+						$constantArrays !== []
+						&& in_array($functionReflection->getName(), ['preg_replace', 'preg_replace_callback', 'preg_replace_callback_array'], true)
+					) {
+						foreach ($constantArrays as $constantArray) {
+							$generalizedArray = $constantArray->generalizeValues();
+
+							$builder = ConstantArrayTypeBuilder::createEmpty();
+							// turn all keys optional
+							foreach ($constantArray->getKeyTypes() as $keyType) {
+								$builder->setOffsetValueType($keyType, $generalizedArray->getOffsetValueType($keyType), true);
+							}
+							$result[] = $builder->getArray();
+						}
+
+						continue;
+					}
+
+					$result[] = $arrayType->generalizeValues();
+				}
+
+				return TypeCombinator::union(...$result);
+			}
+			return $subjectArgumentType;
+		}
+
+		return $defaultReturnType;
+	}
+
+	private function getSubjectType(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$argumentPosition = self::FUNCTIONS_SUBJECT_POSITION[$functionReflection->getName()];
+		if (count($functionCall->getArgs()) <= $argumentPosition) {
+			return null;
+		}
+		return $scope->getType($functionCall->getArgs()[$argumentPosition]->value);
+	}
+
+	private function canReturnNull(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): bool
+	{
+		if (
+			in_array($functionReflection->getName(), ['preg_replace', 'preg_replace_callback', 'preg_replace_callback_array'], true)
+			&& count($functionCall->getArgs()) > 0
+		) {
+			$subjectArgumentType = $this->getSubjectType($functionReflection, $functionCall, $scope);
+
+			if (
+				$subjectArgumentType !== null
+				&& $subjectArgumentType->isArray()->yes()
+			) {
+				return false;
+			}
+		}
+
+		$possibleTypes = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+
+		// resolve conditional return types
+		$possibleTypes = TypeUtils::resolveLateResolvableTypes($possibleTypes);
+
+		return TypeCombinator::containsNull($possibleTypes);
+	}
+
+}
diff --git a/src/Type/Php/RoundFunctionReturnTypeExtension.php b/src/Type/Php/RoundFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..a8833f16
--- /dev/null
+++ b/src/Type/Php/RoundFunctionReturnTypeExtension.php
@@ -0,0 +1,100 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+
+final class RoundFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array(
+			$functionReflection->getName(),
+			[
+				'round',
+				'ceil',
+				'floor',
+			],
+			true,
+		);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		// PHP 7 can return either a float or false.
+		// PHP 8 can either return a float or fatal.
+		$defaultReturnType = null;
+
+		if ($this->phpVersion->hasStricterRoundFunctions()) {
+			// PHP 8 fatals with a missing parameter.
+			$noArgsReturnType = new NeverType(true);
+		} else {
+			// PHP 7 returns null with a missing parameter.
+			$noArgsReturnType = new NullType();
+		}
+
+		if (count($functionCall->getArgs()) < 1) {
+			return $noArgsReturnType;
+		}
+
+		$firstArgType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		if ($firstArgType instanceof MixedType) {
+			return $defaultReturnType;
+		}
+
+		if ($this->phpVersion->hasStricterRoundFunctions()) {
+			$allowed = TypeCombinator::union(
+				new IntegerType(),
+				new FloatType(),
+			);
+
+			if (!$scope->isDeclareStrictTypes()) {
+				$allowed = TypeCombinator::union(
+					$allowed,
+					new IntersectionType([
+						new StringType(),
+						new AccessoryNumericStringType(),
+					]),
+					new NullType(),
+					new BooleanType(),
+				);
+			}
+
+			if ($allowed->isSuperTypeOf($firstArgType)->no()) {
+				// PHP 8 fatals if the parameter is not an integer or float.
+				return new NeverType(true);
+			}
+		} elseif ($firstArgType->isArray()->yes()) {
+			// PHP 7 returns false if the parameter is an array.
+			return new ConstantBooleanType(false);
+		}
+
+		return new FloatType();
+	}
+
+}
diff --git a/src/Type/Php/SetTypeFunctionTypeSpecifyingExtension.php b/src/Type/Php/SetTypeFunctionTypeSpecifyingExtension.php
new file mode 100644
index 00000000..295bac82
--- /dev/null
+++ b/src/Type/Php/SetTypeFunctionTypeSpecifyingExtension.php
@@ -0,0 +1,91 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\TypeCombinator;
+use stdClass;
+use function count;
+use function strtolower;
+
+final class SetTypeFunctionTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return strtolower($functionReflection->getName()) === 'settype'
+			&& count($node->getArgs()) > 1
+			&& $context->null();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$value = $node->getArgs()[0]->value;
+		$valueType = $scope->getType($value);
+		$castType = $scope->getType($node->getArgs()[1]->value);
+
+		$constantStrings = $castType->getConstantStrings();
+		if (count($constantStrings) < 1) {
+			return new SpecifiedTypes();
+		}
+
+		$types = [];
+
+		foreach ($constantStrings as $constantString) {
+			switch ($constantString->getValue()) {
+				case 'bool':
+				case 'boolean':
+					$types[] = $valueType->toBoolean();
+					break;
+				case 'int':
+				case 'integer':
+					$types[] = $valueType->toInteger();
+					break;
+				case 'float':
+				case 'double':
+					$types[] = $valueType->toFloat();
+					break;
+				case 'string':
+					$types[] = $valueType->toString();
+					break;
+				case 'array':
+					$types[] = $valueType->toArray();
+					break;
+				case 'object':
+					$types[] = new ObjectType(stdClass::class);
+					break;
+				case 'null':
+					$types[] = new NullType();
+					break;
+				default:
+					$types[] = new ErrorType();
+			}
+		}
+
+		return $this->typeSpecifier->create(
+			$value,
+			TypeCombinator::union(...$types),
+			TypeSpecifierContext::createTruthy(),
+			$scope,
+		)->setAlwaysOverwriteTypes();
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+}
diff --git a/src/Type/Php/SimpleXMLElementAsXMLMethodReturnTypeExtension.php b/src/Type/Php/SimpleXMLElementAsXMLMethodReturnTypeExtension.php
new file mode 100644
index 00000000..987fcf82
--- /dev/null
+++ b/src/Type/Php/SimpleXMLElementAsXMLMethodReturnTypeExtension.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use SimpleXMLElement;
+use function count;
+
+final class SimpleXMLElementAsXMLMethodReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return SimpleXMLElement::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'asXML';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type
+	{
+		if (count($methodCall->getArgs()) === 1) {
+			return new BooleanType();
+		}
+		return new UnionType([new StringType(), new ConstantBooleanType(false)]);
+	}
+
+}
diff --git a/src/Type/Php/SimpleXMLElementClassPropertyReflectionExtension.php b/src/Type/Php/SimpleXMLElementClassPropertyReflectionExtension.php
new file mode 100644
index 00000000..6d3d9e39
--- /dev/null
+++ b/src/Type/Php/SimpleXMLElementClassPropertyReflectionExtension.php
@@ -0,0 +1,27 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\Php\SimpleXMLElementProperty;
+use PHPStan\Reflection\PropertiesClassReflectionExtension;
+use PHPStan\Reflection\PropertyReflection;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
+
+final class SimpleXMLElementClassPropertyReflectionExtension implements PropertiesClassReflectionExtension
+{
+
+	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
+	{
+		return $classReflection->getName() === 'SimpleXMLElement' || $classReflection->isSubclassOf('SimpleXMLElement');
+	}
+
+	public function getProperty(ClassReflection $classReflection, string $propertyName): PropertyReflection
+	{
+		return new SimpleXMLElementProperty($classReflection, new BenevolentUnionType([new ObjectType($classReflection->getName()), new NullType()]));
+	}
+
+}
diff --git a/src/Type/Php/SimpleXMLElementConstructorThrowTypeExtension.php b/src/Type/Php/SimpleXMLElementConstructorThrowTypeExtension.php
new file mode 100644
index 00000000..4143e611
--- /dev/null
+++ b/src/Type/Php/SimpleXMLElementConstructorThrowTypeExtension.php
@@ -0,0 +1,60 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\DynamicStaticMethodThrowTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use SimpleXMLElement;
+use function count;
+use function extension_loaded;
+use function libxml_use_internal_errors;
+
+final class SimpleXMLElementConstructorThrowTypeExtension implements DynamicStaticMethodThrowTypeExtension
+{
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return extension_loaded('simplexml')
+			&& $methodReflection->getName() === '__construct'
+			&& $methodReflection->getDeclaringClass()->getName() === SimpleXMLElement::class;
+	}
+
+	public function getThrowTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): ?Type
+	{
+		if (count($methodCall->getArgs()) === 0) {
+			return $methodReflection->getThrowType();
+		}
+
+		$valueType = $scope->getType($methodCall->getArgs()[0]->value);
+		$constantStrings = $valueType->getConstantStrings();
+
+		$internalErrorsOld = libxml_use_internal_errors(true);
+
+		try {
+			foreach ($constantStrings as $constantString) {
+				try {
+					new SimpleXMLElement($constantString->getValue());
+				} catch (\Exception $e) { // phpcs:ignore
+					return $methodReflection->getThrowType();
+				}
+
+				$valueType = TypeCombinator::remove($valueType, $constantString);
+			}
+		} finally {
+			libxml_use_internal_errors($internalErrorsOld);
+		}
+
+		if (!$valueType instanceof NeverType) {
+			return $methodReflection->getThrowType();
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/SimpleXMLElementXpathMethodReturnTypeExtension.php b/src/Type/Php/SimpleXMLElementXpathMethodReturnTypeExtension.php
new file mode 100644
index 00000000..f6295403
--- /dev/null
+++ b/src/Type/Php/SimpleXMLElementXpathMethodReturnTypeExtension.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use SimpleXMLElement;
+use function extension_loaded;
+
+final class SimpleXMLElementXpathMethodReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return SimpleXMLElement::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return extension_loaded('simplexml') && $methodReflection->getName() === 'xpath';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): ?Type
+	{
+		if (!isset($methodCall->getArgs()[0])) {
+			return null;
+		}
+
+		$argType = $scope->getType($methodCall->getArgs()[0]->value);
+
+		$xmlElement = new SimpleXMLElement('<foo />');
+
+		foreach ($argType->getConstantStrings() as $constantString) {
+			$result = @$xmlElement->xpath($constantString->getValue());
+			if ($result === false) {
+				// We can't be sure since it's maybe a namespaced xpath
+				return null;
+			}
+
+			$argType = TypeCombinator::remove($argType, $constantString);
+		}
+
+		if (!$argType instanceof NeverType) {
+			return null;
+		}
+
+		return new ArrayType(new MixedType(), $scope->getType($methodCall->var));
+	}
+
+}
diff --git a/src/Type/Php/SprintfFunctionDynamicReturnTypeExtension.php b/src/Type/Php/SprintfFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..9b0db38e
--- /dev/null
+++ b/src/Type/Php/SprintfFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,374 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Internal\CombinationsHelper;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use Throwable;
+use function array_fill;
+use function array_key_exists;
+use function array_shift;
+use function array_values;
+use function count;
+use function in_array;
+use function intval;
+use function is_array;
+use function is_string;
+use function preg_match;
+use function sprintf;
+use function substr;
+use function vsprintf;
+
+final class SprintfFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['sprintf', 'vsprintf'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 0) {
+			return null;
+		}
+
+		$constantType = $this->getConstantType($args, $functionReflection, $scope);
+		if ($constantType !== null) {
+			return $constantType;
+		}
+
+		$formatType = $scope->getType($args[0]->value);
+		$formatStrings = $formatType->getConstantStrings();
+
+		$isLowercase = $formatType->isLowercaseString()->yes() && $this->allValuesSatisfies(
+			$functionReflection,
+			$scope,
+			$args,
+			static fn (Type $type): bool => $type->toString()->isLowercaseString()->yes()
+		);
+
+		$singlePlaceholderEarlyReturn = [];
+		$allPatternsNonEmpty = count($formatStrings) !== 0;
+		$allPatternsNonFalsy = count($formatStrings) !== 0;
+		foreach ($formatStrings as $constantString) {
+			$constantParts = $this->getFormatConstantParts(
+				$constantString->getValue(),
+				$functionReflection,
+				$functionCall,
+				$scope,
+			);
+			if ($constantParts !== null) {
+				if ($constantParts->isNonFalsyString()->yes()) { // phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedIf
+					// keep all bool flags as is
+				} elseif ($constantParts->isNonEmptyString()->yes()) {
+					$allPatternsNonFalsy = false;
+				} else {
+					$allPatternsNonEmpty = false;
+					$allPatternsNonFalsy = false;
+				}
+			} else {
+				$allPatternsNonEmpty = false;
+				$allPatternsNonFalsy = false;
+			}
+
+			if (
+				is_array($singlePlaceholderEarlyReturn)
+				// The printf format is %[argnum$][flags][width][.precision]specifier.
+				&& preg_match('/^%(?P<argnum>[0-9]*\$)?(?P<width>[0-9]*)\.?[0-9]*(?P<specifier>[sbdeEfFgGhHouxX])$/', $constantString->getValue(), $matches) === 1
+			) {
+				if ($matches['argnum'] !== '') {
+					// invalid positional argument
+					if ($matches['argnum'] === '0$') {
+						return null;
+					}
+					$checkArg = intval(substr($matches['argnum'], 0, -1));
+				} else {
+					$checkArg = 1;
+				}
+
+				$checkArgType = $this->getValueType($functionReflection, $scope, $args, $checkArg);
+				if ($checkArgType === null) {
+					return null;
+				}
+
+				// if the format string is just a placeholder and specified an argument
+				// of stringy type, then the return value will be of the same type
+				if (
+					$matches['specifier'] === 's'
+					&& ($checkArgType->isString()->yes() || $checkArgType->isInteger()->yes())
+				) {
+					if ($checkArgType instanceof IntegerRangeType) {
+						$constArgTypes = $checkArgType->getFiniteTypes();
+					} else {
+						$constArgTypes = $checkArgType->getConstantScalarTypes();
+					}
+					if ($constArgTypes !== []) {
+						$printfArgs = array_fill(0, count($args) - 1, '');
+						foreach ($constArgTypes as $constArgType) {
+							$printfArgs[$checkArg - 1] = $constArgType->getValue();
+							try {
+								$singlePlaceholderEarlyReturn[] = new ConstantStringType(@sprintf($constantString->getValue(), ...$printfArgs));
+							} catch (Throwable) {
+								continue 2;
+							}
+						}
+
+						continue;
+					}
+
+					$singlePlaceholderEarlyReturn[] = $checkArgType->toString();
+				} elseif ($matches['specifier'] !== 's') {
+					$singlePlaceholderEarlyReturn[] = $this->getStringReturnType(
+						new AccessoryNumericStringType(),
+						$isLowercase,
+					);
+				}
+
+				continue;
+			}
+
+			$singlePlaceholderEarlyReturn = null;
+		}
+
+		if (is_array($singlePlaceholderEarlyReturn) && count($singlePlaceholderEarlyReturn) > 0) {
+			return TypeCombinator::union(...$singlePlaceholderEarlyReturn);
+		}
+
+		if ($allPatternsNonFalsy) {
+			return $this->getStringReturnType(new AccessoryNonFalsyStringType(), $isLowercase);
+		}
+
+		$isNonEmpty = $allPatternsNonEmpty;
+		if (!$isNonEmpty && $formatType->isNonEmptyString()->yes()) {
+			$isNonEmpty = $this->allValuesSatisfies(
+				$functionReflection,
+				$scope,
+				$args,
+				static fn (Type $type): bool => $type->toString()->isNonEmptyString()->yes()
+			);
+		}
+
+		if ($isNonEmpty) {
+			return $this->getStringReturnType(new AccessoryNonEmptyStringType(), $isLowercase);
+		}
+
+		return $this->getStringReturnType(null, $isLowercase);
+	}
+
+	/**
+	 * @param array<Arg> $args
+	 * @param callable(Type): bool $cb
+	 */
+	private function allValuesSatisfies(FunctionReflection $functionReflection, Scope $scope, array $args, callable $cb): bool
+	{
+		if ($functionReflection->getName() === 'sprintf' && count($args) >= 2) {
+			foreach ($args as $key => $arg) {
+				if ($key === 0) {
+					continue;
+				}
+
+				if (!$cb($scope->getType($arg->value))) {
+					return false;
+				}
+			}
+
+			return true;
+		}
+
+		if ($functionReflection->getName() === 'vsprintf' && count($args) >= 2) {
+			return $cb($scope->getType($args[1]->value)->getIterableValueType());
+		}
+
+		return false;
+	}
+
+	/**
+	 * @param Arg[] $args
+	 */
+	private function getValueType(FunctionReflection $functionReflection, Scope $scope, array $args, int $argNumber): ?Type
+	{
+		if ($functionReflection->getName() === 'sprintf') {
+			// constant string specifies a numbered argument that does not exist
+			if (!array_key_exists($argNumber, $args)) {
+				return null;
+			}
+
+			return $scope->getType($args[$argNumber]->value);
+		}
+
+		if ($functionReflection->getName() === 'vsprintf') {
+			if (!array_key_exists(1, $args)) {
+				return null;
+			}
+
+			$valuesType = $scope->getType($args[1]->value);
+			$resultTypes = [];
+
+			$valuesConstantArrays = $valuesType->getConstantArrays();
+			foreach ($valuesConstantArrays as $valuesConstantArray) {
+				// vsprintf does not care about the keys of the array, only the order
+				$types = array_values($valuesConstantArray->getValueTypes());
+				if (!array_key_exists($argNumber - 1, $types)) {
+					return null;
+				}
+
+				$resultTypes[] = $types[$argNumber - 1];
+			}
+			if (count($resultTypes) === 0) {
+				return $valuesType->getIterableValueType();
+			}
+
+			return TypeCombinator::union(...$resultTypes);
+		}
+
+		return null;
+	}
+
+	/**
+	 * Detect constant strings in the format which neither depend on placeholders nor on given value arguments.
+	 */
+	private function getFormatConstantParts(
+		string $format,
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?ConstantStringType
+	{
+		$args = $functionCall->getArgs();
+		if ($functionReflection->getName() === 'sprintf') {
+			$valuesCount = count($args) - 1;
+		} elseif (
+			$functionReflection->getName() === 'vsprintf'
+			&& count($args) >= 2
+		) {
+			$arraySize = $scope->getType($args[1]->value)->getArraySize();
+			if (!($arraySize instanceof ConstantIntegerType)) {
+				return null;
+			}
+
+			$valuesCount = $arraySize->getValue();
+		} else {
+			return null;
+		}
+
+		if ($valuesCount <= 0) {
+			return null;
+		}
+		$dummyValues = array_fill(0, $valuesCount, '');
+
+		try {
+			$formatted = @vsprintf($format, $dummyValues);
+			if ($formatted === false) { // @phpstan-ignore identical.alwaysFalse (PHP7.2 compat)
+				return null;
+			}
+			return new ConstantStringType($formatted);
+		} catch (Throwable) {
+			return null;
+		}
+	}
+
+	/**
+	 * @param Arg[] $args
+	 */
+	private function getConstantType(array $args, FunctionReflection $functionReflection, Scope $scope): ?Type
+	{
+		$values = [];
+		$combinationsCount = 1;
+		foreach ($args as $arg) {
+			if ($arg->unpack) {
+				return null;
+			}
+
+			$argType = $scope->getType($arg->value);
+			$constantScalarValues = $argType->getConstantScalarValues();
+
+			if (count($constantScalarValues) === 0) {
+				if ($argType instanceof IntegerRangeType) {
+					foreach ($argType->getFiniteTypes() as $finiteType) {
+						$constantScalarValues[] = $finiteType->getValue();
+					}
+				}
+			}
+
+			if (count($constantScalarValues) === 0) {
+				return null;
+			}
+
+			$values[] = $constantScalarValues;
+			$combinationsCount *= count($constantScalarValues);
+		}
+
+		if ($combinationsCount > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return null;
+		}
+
+		$combinations = CombinationsHelper::combinations($values);
+		$returnTypes = [];
+		foreach ($combinations as $combination) {
+			$format = array_shift($combination);
+			if (!is_string($format)) {
+				return null;
+			}
+
+			try {
+				if ($functionReflection->getName() === 'sprintf') {
+					$returnTypes[] = $scope->getTypeFromValue(@sprintf($format, ...$combination));
+				} else {
+					$returnTypes[] = $scope->getTypeFromValue(@vsprintf($format, $combination));
+				}
+			} catch (Throwable) {
+				return null;
+			}
+		}
+
+		if (count($returnTypes) > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return null;
+		}
+
+		return TypeCombinator::union(...$returnTypes);
+	}
+
+	private function getStringReturnType(?AccessoryType $accessoryType, bool $isLowercase): Type
+	{
+		$accessoryTypes = [];
+		if ($accessoryType !== null) {
+			$accessoryTypes[] = $accessoryType;
+		}
+		if ($isLowercase) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+
+		if (count($accessoryTypes) === 0) {
+			return new StringType();
+		}
+
+		$accessoryTypes[] = new StringType();
+
+		return new IntersectionType($accessoryTypes);
+	}
+
+}
diff --git a/src/Type/Php/SscanfFunctionDynamicReturnTypeExtension.php b/src/Type/Php/SscanfFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..182cead1
--- /dev/null
+++ b/src/Type/Php/SscanfFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,90 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+use function preg_match_all;
+
+final class SscanfFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['sscanf', 'fscanf'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) !== 2) {
+			return null;
+		}
+
+		$formatType = $scope->getType($args[1]->value);
+
+		if (!$formatType instanceof ConstantStringType) {
+			return null;
+		}
+
+		if (preg_match_all('/%(\d*)(\[[^\]]+\]|[cdeEfosux]{1})/', $formatType->getValue(), $matches) > 0) {
+			$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
+
+			for ($i = 0; $i < count($matches[0]); $i++) {
+				$length = $matches[1][$i];
+				$specifier = $matches[2][$i];
+
+				$type = new StringType();
+				if ($length !== '') {
+					if (((int) $length) > 1) {
+						$type = new IntersectionType([
+							$type,
+							new AccessoryNonFalsyStringType(),
+						]);
+					} else {
+						$type = new IntersectionType([
+							$type,
+							new AccessoryNonEmptyStringType(),
+						]);
+					}
+				}
+
+				if (in_array($specifier, ['d', 'o', 'u', 'x'], true)) {
+					$type = new IntegerType();
+				}
+
+				if (in_array($specifier, ['e', 'E', 'f'], true)) {
+					$type = new FloatType();
+				}
+
+				$type = TypeCombinator::addNull($type);
+				$arrayBuilder->setOffsetValueType(new ConstantIntegerType($i), $type);
+			}
+
+			return TypeCombinator::addNull($arrayBuilder->getArray());
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/StatDynamicReturnTypeExtension.php b/src/Type/Php/StatDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..3e4b0961
--- /dev/null
+++ b/src/Type/Php/StatDynamicReturnTypeExtension.php
@@ -0,0 +1,81 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use SplFileObject;
+use function in_array;
+
+final class StatDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension, DynamicMethodReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['stat', 'lstat', 'fstat', 'ssh2_sftp_stat'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		return TypeCombinator::union($this->getReturnType(), new ConstantBooleanType(false));
+	}
+
+	public function getClass(): string
+	{
+		return SplFileObject::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'fstat';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type
+	{
+		return $this->getReturnType();
+	}
+
+	private function getReturnType(): Type
+	{
+		$valueType = new IntegerType();
+		$builder = ConstantArrayTypeBuilder::createEmpty();
+		$keys = [
+			'dev',
+			'ino',
+			'mode',
+			'nlink',
+			'uid',
+			'gid',
+			'rdev',
+			'size',
+			'atime',
+			'mtime',
+			'ctime',
+			'blksize',
+			'blocks',
+		];
+
+		foreach ($keys as $key) {
+			$builder->setOffsetValueType(null, $valueType);
+		}
+
+		foreach ($keys as $key) {
+			$builder->setOffsetValueType(new ConstantStringType($key), $valueType);
+		}
+
+		return $builder->getArray();
+	}
+
+}
diff --git a/src/Type/Php/StrCaseFunctionsReturnTypeExtension.php b/src/Type/Php/StrCaseFunctionsReturnTypeExtension.php
new file mode 100644
index 00000000..c07a2c0c
--- /dev/null
+++ b/src/Type/Php/StrCaseFunctionsReturnTypeExtension.php
@@ -0,0 +1,170 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\TypeUtils;
+use function array_diff;
+use function array_map;
+use function count;
+use function in_array;
+use function is_callable;
+use function mb_check_encoding;
+use const MB_CASE_LOWER;
+use const MB_CASE_UPPER;
+
+final class StrCaseFunctionsReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	/**
+	 * [function name => minimum arity]
+	 */
+	private const FUNCTIONS = [
+		'strtoupper' => 1,
+		'strtolower' => 1,
+		'mb_strtoupper' => 1,
+		'mb_strtolower' => 1,
+		'lcfirst' => 1,
+		'ucfirst' => 1,
+		'mb_lcfirst' => 1,
+		'mb_ucfirst' => 1,
+		'ucwords' => 1,
+		'mb_convert_case' => 2,
+		'mb_convert_kana' => 1,
+	];
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return isset(self::FUNCTIONS[$functionReflection->getName()]);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$fnName = $functionReflection->getName();
+		$args = $functionCall->getArgs();
+
+		if (count($args) < self::FUNCTIONS[$fnName]) {
+			return null;
+		}
+
+		$argType = $scope->getType($args[0]->value);
+		if (!is_callable($fnName)) {
+			return null;
+		}
+
+		$modes = [];
+		$keepLowercase = false;
+		$forceLowercase = false;
+		$keepUppercase = false;
+		$forceUppercase = false;
+
+		if ($fnName === 'mb_convert_case') {
+			$modeType = $scope->getType($args[1]->value);
+			$modes = array_map(static fn ($mode) => $mode->getValue(), TypeUtils::getConstantIntegers($modeType));
+			if (count($modes) > 0) {
+				$forceLowercase = count(array_diff($modes, [
+					MB_CASE_LOWER,
+					5, // MB_CASE_LOWER_SIMPLE
+				])) === 0;
+				$keepLowercase = count(array_diff($modes, [
+					MB_CASE_LOWER,
+					5, // MB_CASE_LOWER_SIMPLE
+					3, // MB_CASE_FOLD,
+					7, // MB_CASE_FOLD_SIMPLE
+				])) === 0;
+				$forceUppercase = count(array_diff($modes, [
+					MB_CASE_UPPER,
+					4, // MB_CASE_UPPER_SIMPLE
+				])) === 0;
+				$keepUppercase = count(array_diff($modes, [
+					MB_CASE_UPPER,
+					4, // MB_CASE_UPPER_SIMPLE
+					3, // MB_CASE_FOLD,
+					7, // MB_CASE_FOLD_SIMPLE
+				])) === 0;
+			}
+		} elseif (in_array($fnName, ['ucwords', 'mb_convert_kana'], true)) {
+			if (count($args) >= 2) {
+				$modeType = $scope->getType($args[1]->value);
+				$modes = array_map(static fn ($mode) => $mode->getValue(), $modeType->getConstantStrings());
+			} else {
+				$modes = $fnName === 'mb_convert_kana' ? ['KV'] : [" \t\r\n\f\v"];
+			}
+		} elseif (in_array($fnName, ['strtolower', 'mb_strtolower'], true)) {
+			$forceLowercase = true;
+		} elseif (in_array($fnName, ['lcfirst', 'mb_lcfirst'], true)) {
+			$keepLowercase = true;
+		} elseif (in_array($fnName, ['strtoupper', 'mb_strtoupper'], true)) {
+			$forceUppercase = true;
+		} elseif (in_array($fnName, ['ucfirst', 'mb_ucfirst'], true)) {
+			$keepUppercase = true;
+		}
+
+		$constantStrings = array_map(static fn ($type) => $type->getValue(), $argType->getConstantStrings());
+		if (count($constantStrings) > 0 && mb_check_encoding($constantStrings, 'UTF-8')) {
+			$strings = [];
+
+			$parameters = [];
+			if (in_array($fnName, ['ucwords', 'mb_convert_case', 'mb_convert_kana'], true)) {
+				foreach ($modes as $mode) {
+					foreach ($constantStrings as $constantString) {
+						$parameters[] = [$constantString, $mode];
+					}
+				}
+			} else {
+				$parameters = array_map(static fn ($s) => [$s], $constantStrings);
+			}
+
+			foreach ($parameters as $parameter) {
+				$strings[] = $fnName(...$parameter);
+			}
+
+			if (count($strings) !== 0 && mb_check_encoding($strings, 'UTF-8')) {
+				return TypeCombinator::union(...array_map(static fn ($s) => new ConstantStringType($s), $strings));
+			}
+		}
+
+		$accessoryTypes = [];
+		if ($forceLowercase || ($keepLowercase && $argType->isLowercaseString()->yes())) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+		if ($forceUppercase || ($keepUppercase && $argType->isUppercaseString()->yes())) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+
+		if ($argType->isNumericString()->yes()) {
+			$accessoryTypes[] = new AccessoryNumericStringType();
+		} elseif ($argType->isNonFalsyString()->yes()) {
+			$accessoryTypes[] = new AccessoryNonFalsyStringType();
+		} elseif ($argType->isNonEmptyString()->yes()) {
+			$accessoryTypes[] = new AccessoryNonEmptyStringType();
+		}
+
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+
+			return new IntersectionType($accessoryTypes);
+		}
+
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/StrContainingTypeSpecifyingExtension.php b/src/Type/Php/StrContainingTypeSpecifyingExtension.php
new file mode 100644
index 00000000..16359eb0
--- /dev/null
+++ b/src/Type/Php/StrContainingTypeSpecifyingExtension.php
@@ -0,0 +1,110 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
+use PhpParser\Node\Expr\BinaryOp\NotIdentical;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PhpParser\Node\Scalar\String_;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\FunctionTypeSpecifyingExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use function array_key_exists;
+use function count;
+use function strtolower;
+
+final class StrContainingTypeSpecifyingExtension implements FunctionTypeSpecifyingExtension, TypeSpecifierAwareExtension
+{
+
+	private const STR_CONTAINING_FUNCTIONS = [
+		'fnmatch' => [1, 0],
+		'str_contains' => [0, 1],
+		'str_starts_with' => [0, 1],
+		'str_ends_with' => [0, 1],
+		'strpos' => [0, 1],
+		'strrpos' => [0, 1],
+		'stripos' => [0, 1],
+		'strripos' => [0, 1],
+		'strstr' => [0, 1],
+		'mb_strpos' => [0, 1],
+		'mb_strrpos' => [0, 1],
+		'mb_stripos' => [0, 1],
+		'mb_strripos' => [0, 1],
+		'mb_strstr' => [0, 1],
+	];
+
+	private TypeSpecifier $typeSpecifier;
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection, FuncCall $node, TypeSpecifierContext $context): bool
+	{
+		return array_key_exists(strtolower($functionReflection->getName()), self::STR_CONTAINING_FUNCTIONS)
+			&& $context->true();
+	}
+
+	public function specifyTypes(FunctionReflection $functionReflection, FuncCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
+	{
+		$args = $node->getArgs();
+
+		if (count($args) >= 2) {
+			[$hackstackArg, $needleArg] = self::STR_CONTAINING_FUNCTIONS[strtolower($functionReflection->getName())];
+
+			$haystackType = $scope->getType($args[$hackstackArg]->value);
+			$needleType = $scope->getType($args[$needleArg]->value);
+
+			if ($needleType->isNonEmptyString()->yes() && $haystackType->isString()->yes()) {
+				$accessories = [
+					new StringType(),
+				];
+
+				if ($needleType->isNonFalsyString()->yes()) {
+					$accessories[] = new AccessoryNonFalsyStringType();
+				} else {
+					$accessories[] = new AccessoryNonEmptyStringType();
+				}
+
+				if ($haystackType->isLiteralString()->yes()) {
+					$accessories[] = new AccessoryLiteralStringType();
+				}
+				if ($haystackType->isNumericString()->yes()) {
+					$accessories[] = new AccessoryNumericStringType();
+				}
+
+				return $this->typeSpecifier->create(
+					$args[$hackstackArg]->value,
+					new IntersectionType($accessories),
+					$context,
+					$scope,
+				)->setRootExpr(new BooleanAnd(
+					new NotIdentical(
+						$args[$needleArg]->value,
+						new String_(''),
+					),
+					new FuncCall(new Name('FAUX_FUNCTION'), [
+						new Arg($args[$needleArg]->value),
+					]),
+				));
+			}
+		}
+
+		return new SpecifiedTypes();
+	}
+
+}
diff --git a/src/Type/Php/StrIncrementDecrementFunctionReturnTypeExtension.php b/src/Type/Php/StrIncrementDecrementFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..a9b4c5b4
--- /dev/null
+++ b/src/Type/Php/StrIncrementDecrementFunctionReturnTypeExtension.php
@@ -0,0 +1,144 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function chr;
+use function count;
+use function implode;
+use function in_array;
+use function is_float;
+use function is_int;
+use function is_numeric;
+use function is_string;
+use function ord;
+use function preg_match;
+use function str_split;
+use function stripos;
+
+final class StrIncrementDecrementFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['str_increment', 'str_decrement'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$fnName = $functionReflection->getName();
+		$args = $functionCall->getArgs();
+
+		if (count($args) !== 1) {
+			return null;
+		}
+
+		$argType = $scope->getType($args[0]->value);
+		if (count($argType->getConstantScalarValues()) === 0) {
+			return null;
+		}
+
+		$types = [];
+		foreach ($argType->getConstantScalarValues() as $value) {
+			if (!(is_string($value) || is_int($value) || is_float($value))) {
+				continue;
+			}
+			$string = (string) $value;
+
+			if (preg_match('/\A(?:0|[1-9A-Za-z][0-9A-Za-z]*)+\z/', $string) < 1) {
+				continue;
+			}
+
+			$result = null;
+			if ($fnName === 'str_increment') {
+				$result = $this->increment($string);
+			} elseif ($fnName === 'str_decrement') {
+				$result = $this->decrement($string);
+			}
+
+			if ($result === null) {
+				continue;
+			}
+
+			$types[] = new ConstantStringType($result);
+		}
+
+		return count($types) === 0
+			? new ErrorType()
+			: TypeCombinator::union(...$types);
+	}
+
+	private function increment(string $s): string
+	{
+		if (is_numeric($s)) {
+			$offset = stripos($s, 'e');
+			if ($offset !== false) {
+				// Using increment operator would cast the string to float
+				// Therefore we manually increment it to convert it to an "f"/"F" that doesn't get affected
+				$c = $s[$offset];
+				$c++;
+				$s[$offset] = $c;
+				$s++;
+				$s[$offset] = [
+					'f' => 'e',
+					'F' => 'E',
+					'g' => 'f',
+					'G' => 'F',
+				][$s[$offset]];
+
+				return $s;
+			}
+		}
+
+		return (string) ++$s;
+	}
+
+	private function decrement(string $s): ?string
+	{
+		if (in_array($s, ['a', 'A', '0'], true)) {
+			return null;
+		}
+
+		$decremented = str_split($s, 1);
+		$position = count($decremented) - 1;
+		$carry = false;
+		$map = [
+			'0' => '9',
+			'A' => 'Z',
+			'a' => 'z',
+		];
+		do {
+			$c = $decremented[$position];
+			if (!in_array($c, ['a', 'A', '0'], true)) {
+				$carry = false;
+				$decremented[$position] = chr(ord($c) - 1);
+			} else {
+				$carry = true;
+				$decremented[$position] = $map[$c];
+			}
+		} while ($carry && $position-- > 0);
+
+		if ($carry || count($decremented) > 1 && $decremented[0] === '0') {
+			if (count($decremented) === 1) {
+				return null;
+			}
+
+			unset($decremented[0]);
+		}
+
+		return implode($decremented);
+	}
+
+}
diff --git a/src/Type/Php/StrPadFunctionReturnTypeExtension.php b/src/Type/Php/StrPadFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..c9b5cc1a
--- /dev/null
+++ b/src/Type/Php/StrPadFunctionReturnTypeExtension.php
@@ -0,0 +1,74 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+
+final class StrPadFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'str_pad';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return new StringType();
+		}
+
+		$inputType = $scope->getType($args[0]->value);
+		$lengthType = $scope->getType($args[1]->value);
+
+		$accessoryTypes = [];
+		if ($inputType->isNonFalsyString()->yes()) {
+			$accessoryTypes[] = new AccessoryNonFalsyStringType();
+		} elseif ($inputType->isNonEmptyString()->yes() || IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($lengthType)->yes()) {
+			$accessoryTypes[] = new AccessoryNonEmptyStringType();
+		}
+
+		if (count($args) < 3) {
+			$padStringType = null;
+		} else {
+			$padStringType = $scope->getType($args[2]->value);
+		}
+
+		if ($inputType->isLiteralString()->yes() && ($padStringType === null || $padStringType->isLiteralString()->yes())) {
+			$accessoryTypes[] = new AccessoryLiteralStringType();
+		}
+		if ($inputType->isLowercaseString()->yes() && ($padStringType === null || $padStringType->isLowercaseString()->yes())) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+		if ($inputType->isUppercaseString()->yes() && ($padStringType === null || $padStringType->isUppercaseString()->yes())) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+			return new IntersectionType($accessoryTypes);
+		}
+
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/StrRepeatFunctionReturnTypeExtension.php b/src/Type/Php/StrRepeatFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..5782b7cc
--- /dev/null
+++ b/src/Type/Php/StrRepeatFunctionReturnTypeExtension.php
@@ -0,0 +1,114 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use Nette\Utils\Strings;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+use function str_repeat;
+use function strlen;
+
+final class StrRepeatFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'str_repeat';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return new StringType();
+		}
+
+		$multiplierType = $scope->getType($args[1]->value);
+
+		if ((new ConstantIntegerType(0))->isSuperTypeOf($multiplierType)->yes()) {
+			return new ConstantStringType('');
+		}
+
+		if (IntegerRangeType::fromInterval(null, 0)->isSuperTypeOf($multiplierType)->yes()) {
+			return new NeverType();
+		}
+
+		$inputType = $scope->getType($args[0]->value);
+		if (
+			$inputType instanceof ConstantStringType
+			&& $multiplierType instanceof ConstantIntegerType
+			// don't generate type too big to avoid hitting memory limit
+			&& strlen($inputType->getValue()) * $multiplierType->getValue() < 100
+		) {
+			return new ConstantStringType(str_repeat($inputType->getValue(), $multiplierType->getValue()));
+		}
+
+		$accessoryTypes = [];
+		if ($inputType->isNonEmptyString()->yes()) {
+			if (IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($multiplierType)->yes()) {
+				if ($inputType->isNonFalsyString()->yes()) {
+					$accessoryTypes[] = new AccessoryNonFalsyStringType();
+				} else {
+					$accessoryTypes[] = new AccessoryNonEmptyStringType();
+				}
+			}
+		}
+
+		if ($inputType->isLiteralString()->yes()) {
+			$accessoryTypes[] = new AccessoryLiteralStringType();
+
+			if (
+				$inputType->isNumericString()->yes()
+				&& IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($multiplierType)->yes()
+			) {
+				$onlyNumbers = true;
+				foreach ($inputType->getConstantStrings() as $constantString) {
+					if (Strings::match($constantString->getValue(), '#^[0-9]+$#') === null) {
+						$onlyNumbers = false;
+						break;
+					}
+				}
+
+				if ($onlyNumbers) {
+					$accessoryTypes[] = new AccessoryNumericStringType();
+				}
+			}
+		}
+
+		if ($inputType->isLowercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+
+		if ($inputType->isUppercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+			return new IntersectionType($accessoryTypes);
+		}
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/StrSplitFunctionReturnTypeExtension.php b/src/Type/Php/StrSplitFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..c99e143d
--- /dev/null
+++ b/src/Type/Php/StrSplitFunctionReturnTypeExtension.php
@@ -0,0 +1,140 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_is_list;
+use function array_map;
+use function array_unique;
+use function count;
+use function in_array;
+use function mb_internal_encoding;
+use function mb_str_split;
+use function str_split;
+
+final class StrSplitFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	use MbFunctionsReturnTypeExtensionTrait;
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['str_split', 'mb_str_split'], true);
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		if (count($functionCall->getArgs()) < 1) {
+			return null;
+		}
+
+		if (count($functionCall->getArgs()) >= 2) {
+			$splitLengthType = $scope->getType($functionCall->getArgs()[1]->value);
+			if ($splitLengthType instanceof ConstantIntegerType) {
+				$splitLength = $splitLengthType->getValue();
+				if ($splitLength < 1) {
+					return new ConstantBooleanType(false);
+				}
+			}
+		} else {
+			$splitLength = 1;
+		}
+
+		$encoding = null;
+		if ($functionReflection->getName() === 'mb_str_split') {
+			if (count($functionCall->getArgs()) >= 3) {
+				$strings = $scope->getType($functionCall->getArgs()[2]->value)->getConstantStrings();
+				$values = array_unique(array_map(static fn (ConstantStringType $encoding): string => $encoding->getValue(), $strings));
+
+				if (count($values) !== 1) {
+					return null;
+				}
+
+				$encoding = $values[0];
+				if (!$this->isSupportedEncoding($encoding)) {
+					return new ConstantBooleanType(false);
+				}
+			} else {
+				$encoding = mb_internal_encoding();
+			}
+		}
+
+		if (!isset($splitLength)) {
+			return null;
+		}
+
+		$stringType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		$constantStrings = $stringType->getConstantStrings();
+		if (count($constantStrings) > 0) {
+			$results = [];
+			foreach ($constantStrings as $constantString) {
+				$items = $encoding === null
+					? str_split($constantString->getValue(), $splitLength)
+					: @mb_str_split($constantString->getValue(), $splitLength, $encoding);
+				if ($items === false) {
+					throw new ShouldNotHappenException();
+				}
+
+				$results[] = self::createConstantArrayFrom($items, $scope);
+			}
+
+			return TypeCombinator::union(...$results);
+		}
+
+		$returnType = TypeCombinator::intersect(new ArrayType(new IntegerType(), new StringType()), new AccessoryArrayListType());
+
+		return $encoding === null && !$this->phpVersion->strSplitReturnsEmptyArray()
+			? TypeCombinator::intersect($returnType, new NonEmptyArrayType())
+			: $returnType;
+	}
+
+	/**
+	 * @param string[] $constantArray
+	 */
+	private static function createConstantArrayFrom(array $constantArray, Scope $scope): ConstantArrayType
+	{
+		$keyTypes = [];
+		$valueTypes = [];
+		$isList = true;
+		$i = 0;
+
+		foreach ($constantArray as $key => $value) {
+			$keyType = $scope->getTypeFromValue($key);
+			if (!$keyType instanceof ConstantIntegerType) {
+				throw new ShouldNotHappenException();
+			}
+			$keyTypes[] = $keyType;
+
+			$valueTypes[] = $scope->getTypeFromValue($value);
+
+			$isList = $isList && $key === $i;
+			$i++;
+		}
+
+		return new ConstantArrayType($keyTypes, $valueTypes, $isList ? [$i] : [0], [], TrinaryLogic::createFromBoolean(array_is_list($constantArray)));
+	}
+
+}
diff --git a/src/Type/Php/StrTokFunctionReturnTypeExtension.php b/src/Type/Php/StrTokFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..4b8efc5c
--- /dev/null
+++ b/src/Type/Php/StrTokFunctionReturnTypeExtension.php
@@ -0,0 +1,46 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+
+final class StrTokFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'strtok';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) !== 2) {
+			return null;
+		}
+
+		$delimiterType = $scope->getType($functionCall->getArgs()[0]->value);
+		$isEmptyString = (new ConstantStringType(''))->isSuperTypeOf($delimiterType);
+		if ($isEmptyString->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		if ($isEmptyString->no()) {
+			return new IntersectionType([new StringType(), new AccessoryNonEmptyStringType()]);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/StrWordCountFunctionDynamicReturnTypeExtension.php b/src/Type/Php/StrWordCountFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..31e8be40
--- /dev/null
+++ b/src/Type/Php/StrWordCountFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,66 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+use function count;
+
+final class StrWordCountFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'str_word_count';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		Node\Expr\FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		$argsCount = count($functionCall->getArgs());
+		if ($argsCount === 1) {
+			return new IntegerType();
+		} elseif ($argsCount === 2 || $argsCount === 3) {
+			$formatType = $scope->getType($functionCall->getArgs()[1]->value);
+			if ($formatType instanceof ConstantIntegerType) {
+				$val = $formatType->getValue();
+				if ($val === 0) {
+					// return word count
+					return new IntegerType();
+				} elseif ($val === 1 || $val === 2) {
+					// return [word] or [offset => word]
+					return new ArrayType(new IntegerType(), new StringType());
+				}
+
+				// return false, invalid format value specified
+				return new ConstantBooleanType(false);
+			}
+
+			// Could be invalid format type as well, but parameter type checks will catch that.
+
+			return new UnionType([
+				new IntegerType(),
+				new ArrayType(new IntegerType(), new StringType()),
+				new ConstantBooleanType(false),
+			]);
+		}
+
+		// else fatal error; too many or too few arguments
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Php/StrlenFunctionReturnTypeExtension.php b/src/Type/Php/StrlenFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..3bc44ab6
--- /dev/null
+++ b/src/Type/Php/StrlenFunctionReturnTypeExtension.php
@@ -0,0 +1,85 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_map;
+use function array_unique;
+use function count;
+use function max;
+use function min;
+use function range;
+use function sort;
+use function strlen;
+
+final class StrlenFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'strlen';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) === 0) {
+			return null;
+		}
+
+		$argType = $scope->getType($args[0]->value);
+		$constantScalars = $argType->getConstantScalarTypes();
+
+		$lengths = [];
+		foreach ($constantScalars as $constantScalar) {
+			$stringScalar = $constantScalar->toString();
+			if (!($stringScalar instanceof ConstantStringType)) {
+				$lengths = [];
+				break;
+			}
+			$length = strlen($stringScalar->getValue());
+			$lengths[] = $length;
+		}
+
+		$isNonEmpty = $argType->isNonEmptyString();
+		$numeric = TypeCombinator::union(new IntegerType(), new FloatType());
+		$range = null;
+		if (count($lengths) > 0) {
+			$lengths = array_unique($lengths);
+			sort($lengths);
+			if ($lengths === range(min($lengths), max($lengths))) {
+				$range = IntegerRangeType::fromInterval(min($lengths), max($lengths));
+			} else {
+				$range = TypeCombinator::union(...array_map(static fn ($l) => new ConstantIntegerType($l), $lengths));
+			}
+		} elseif ($argType->isBoolean()->yes()) {
+			$range = IntegerRangeType::fromInterval(0, 1);
+		} elseif (
+			$isNonEmpty->yes()
+			|| $numeric->isSuperTypeOf($argType)->yes()
+			|| TypeCombinator::remove($argType, $numeric)->isNonEmptyString()->yes()
+		) {
+			$range = IntegerRangeType::fromInterval(1, null);
+		} elseif ($argType->isString()->yes() && $isNonEmpty->no()) {
+			$range = new ConstantIntegerType(0);
+		}
+
+		return $range;
+	}
+
+}
diff --git a/src/Type/Php/StrtotimeFunctionReturnTypeExtension.php b/src/Type/Php/StrtotimeFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..c4f1fdee
--- /dev/null
+++ b/src/Type/Php/StrtotimeFunctionReturnTypeExtension.php
@@ -0,0 +1,71 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ParametersAcceptorSelector;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeUtils;
+use function array_map;
+use function array_unique;
+use function count;
+use function gettype;
+use function min;
+use function strtotime;
+
+final class StrtotimeFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'strtotime';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
+	{
+		$defaultReturnType = ParametersAcceptorSelector::selectFromArgs(
+			$scope,
+			$functionCall->getArgs(),
+			$functionReflection->getVariants(),
+		)->getReturnType();
+		if (count($functionCall->getArgs()) === 0) {
+			return $defaultReturnType;
+		}
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+		if ($argType instanceof MixedType) {
+			return TypeUtils::toBenevolentUnion($defaultReturnType);
+		}
+		$results = array_unique(array_map(static fn (ConstantStringType $string): int|bool => strtotime($string->getValue()), $argType->getConstantStrings()));
+		$resultTypes = array_unique(array_map(static fn (int|bool $value): string => gettype($value), $results));
+
+		if (count($resultTypes) !== 1 || count($results) === 0) {
+			return $defaultReturnType;
+		}
+
+		if ($results[0] === false) {
+			return new ConstantBooleanType(false);
+		}
+
+		// 2nd param $baseTimestamp is too non-deterministic so simply return int
+		if (count($functionCall->getArgs()) > 1) {
+			return new IntegerType();
+		}
+
+		// if it is positive we can narrow down to positive-int as long as time flows forward
+		if (min(array_map('intval', $results)) > 0) {
+			return IntegerRangeType::createAllGreaterThan(0);
+		}
+
+		return new IntegerType();
+	}
+
+}
diff --git a/src/Type/Php/StrvalFamilyFunctionReturnTypeExtension.php b/src/Type/Php/StrvalFamilyFunctionReturnTypeExtension.php
new file mode 100644
index 00000000..a9fdeb3b
--- /dev/null
+++ b/src/Type/Php/StrvalFamilyFunctionReturnTypeExtension.php
@@ -0,0 +1,64 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\FloatType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+
+final class StrvalFamilyFunctionReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	private const FUNCTIONS = [
+		'strval',
+		'intval',
+		'boolval',
+		'floatval',
+		'doubleval',
+	];
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), self::FUNCTIONS, true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			return new NullType();
+		}
+
+		$argType = $scope->getType($functionCall->getArgs()[0]->value);
+
+		switch ($functionReflection->getName()) {
+			case 'strval':
+				return $argType->toString();
+			case 'intval':
+				$type = $argType->toInteger();
+				return $type instanceof ErrorType ? new IntegerType() : $type;
+			case 'boolval':
+				return $argType->toBoolean();
+			case 'floatval':
+			case 'doubleval':
+				$type = $argType->toFloat();
+				return $type instanceof ErrorType ? new FloatType() : $type;
+			default:
+				throw new ShouldNotHappenException();
+		}
+	}
+
+}
diff --git a/src/Type/Php/SubstrDynamicReturnTypeExtension.php b/src/Type/Php/SubstrDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..5f23cebd
--- /dev/null
+++ b/src/Type/Php/SubstrDynamicReturnTypeExtension.php
@@ -0,0 +1,131 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
+use function in_array;
+use function is_bool;
+use function mb_substr;
+use function substr;
+
+final class SubstrDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['substr', 'mb_substr'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return null;
+		}
+
+		$string = $scope->getType($args[0]->value);
+		$offset = $scope->getType($args[1]->value);
+
+		$negativeOffset = IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($offset)->yes();
+		$zeroOffset = (new ConstantIntegerType(0))->isSuperTypeOf($offset)->yes();
+		$length = null;
+		$positiveLength = false;
+		$maybeOneLength = false;
+
+		if (count($args) === 3) {
+			$length = $scope->getType($args[2]->value);
+			$positiveLength = IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($length)->yes();
+			$maybeOneLength = !(new ConstantIntegerType(1))->isSuperTypeOf($length)->no();
+		}
+
+		$constantStrings = $string->getConstantStrings();
+		if (
+			count($constantStrings) > 0
+			&& $offset instanceof ConstantIntegerType
+			&& ($length === null || $length instanceof ConstantIntegerType)
+		) {
+			$results = [];
+			foreach ($constantStrings as $constantString) {
+				if ($length !== null) {
+					if ($functionReflection->getName() === 'mb_substr') {
+						$substr = mb_substr($constantString->getValue(), $offset->getValue(), $length->getValue());
+					} else {
+						$substr = substr($constantString->getValue(), $offset->getValue(), $length->getValue());
+					}
+				} else {
+					if ($functionReflection->getName() === 'mb_substr') {
+						$substr = mb_substr($constantString->getValue(), $offset->getValue());
+					} else {
+						$substr = substr($constantString->getValue(), $offset->getValue());
+					}
+				}
+
+				if (is_bool($substr)) {
+					$results[] = new ConstantBooleanType($substr);
+				} else {
+					$results[] = new ConstantStringType($substr);
+				}
+			}
+
+			return TypeCombinator::union(...$results);
+		}
+
+		$accessoryTypes = [];
+		$isNotEmpty = false;
+		if ($string->isLowercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryLowercaseStringType();
+		}
+		if ($string->isUppercaseString()->yes()) {
+			$accessoryTypes[] = new AccessoryUppercaseStringType();
+		}
+		if ($string->isNonEmptyString()->yes() && ($negativeOffset || $zeroOffset && $positiveLength)) {
+			$isNotEmpty = true;
+			if ($string->isNonFalsyString()->yes() && !$maybeOneLength) {
+				$accessoryTypes[] = new AccessoryNonFalsyStringType();
+			} else {
+				$accessoryTypes[] = new AccessoryNonEmptyStringType();
+			}
+		}
+		if (count($accessoryTypes) > 0) {
+			$accessoryTypes[] = new StringType();
+
+			if (!$isNotEmpty && $this->phpVersion->substrReturnFalseInsteadOfEmptyString()) {
+				return TypeCombinator::union(
+					new ConstantBooleanType(false),
+					new IntersectionType($accessoryTypes),
+				);
+			}
+
+			return new IntersectionType($accessoryTypes);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/ThrowableReturnTypeExtension.php b/src/Type/Php/ThrowableReturnTypeExtension.php
new file mode 100644
index 00000000..0deca816
--- /dev/null
+++ b/src/Type/Php/ThrowableReturnTypeExtension.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\BenevolentUnionType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use Throwable;
+use function count;
+use function in_array;
+use function strtolower;
+
+final class ThrowableReturnTypeExtension implements DynamicMethodReturnTypeExtension
+{
+
+	public function getClass(): string
+	{
+		return Throwable::class;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'getCode';
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type
+	{
+		$type = $scope->getType($methodCall->var);
+		$types = [];
+		$pdoException = new ObjectType('PDOException');
+		foreach ($type->getObjectClassNames() as $class) {
+			$classType = new ObjectType($class);
+			if ($classType->getClassReflection() !== null) {
+				$classReflection = $classType->getClassReflection();
+				foreach ($classReflection->getMethodTags() as $methodName => $methodTag) {
+					if (strtolower($methodName) !== 'getcode') {
+						continue;
+					}
+
+					$types[] = $methodTag->getReturnType();
+					continue 2;
+				}
+			}
+
+			if ($pdoException->isSuperTypeOf($classType)->yes()) {
+				$types[] = new BenevolentUnionType([new IntegerType(), new StringType()]);
+				continue;
+			}
+
+			if (in_array(strtolower($class), [
+				'throwable',
+				'exception',
+				'runtimeexception',
+			], true)) {
+				$types[] = new BenevolentUnionType([new IntegerType(), new StringType()]);
+				continue;
+			}
+
+			$types[] = new IntegerType();
+		}
+
+		if (count($types) === 0) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::union(...$types);
+	}
+
+}
diff --git a/src/Type/Php/TriggerErrorDynamicReturnTypeExtension.php b/src/Type/Php/TriggerErrorDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..2a5d6c91
--- /dev/null
+++ b/src/Type/Php/TriggerErrorDynamicReturnTypeExtension.php
@@ -0,0 +1,69 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+use const E_USER_DEPRECATED;
+use const E_USER_ERROR;
+use const E_USER_NOTICE;
+use const E_USER_WARNING;
+
+final class TriggerErrorDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function __construct(private PhpVersion $phpVersion)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'trigger_error';
+	}
+
+	public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): ?Type
+	{
+		$args = $functionCall->getArgs();
+
+		if (count($args) === 0) {
+			return null;
+		}
+
+		if (count($args) === 1) {
+			return new ConstantBooleanType(true);
+		}
+
+		$errorType = $scope->getType($args[1]->value);
+
+		if ($errorType instanceof ConstantIntegerType) {
+			$errorLevel = $errorType->getValue();
+
+			if ($errorLevel === E_USER_ERROR) {
+				return new NeverType(true);
+			}
+
+			if (!in_array($errorLevel, [E_USER_WARNING, E_USER_NOTICE, E_USER_DEPRECATED], true)) {
+				if ($this->phpVersion->throwsValueErrorForInternalFunctions()) {
+					return new NeverType(true);
+				}
+
+				return new ConstantBooleanType(false);
+			}
+
+			return new ConstantBooleanType(true);
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Php/TrimFunctionDynamicReturnTypeExtension.php b/src/Type/Php/TrimFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..be86cdfa
--- /dev/null
+++ b/src/Type/Php/TrimFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,53 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+
+final class TrimFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), ['trim', 'rtrim', 'ltrim'], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 1) {
+			return null;
+		}
+
+		$stringType = $scope->getType($args[0]->value);
+		$accessory = [];
+		if ($stringType->isLowercaseString()->yes()) {
+			$accessory[] = new AccessoryLowercaseStringType();
+		}
+		if ($stringType->isUppercaseString()->yes()) {
+			$accessory[] = new AccessoryUppercaseStringType();
+		}
+		if (count($accessory) > 0) {
+			$accessory[] = new StringType();
+			return new IntersectionType($accessory);
+		}
+
+		return new StringType();
+	}
+
+}
diff --git a/src/Type/Php/TypeSpecifyingFunctionsDynamicReturnTypeExtension.php b/src/Type/Php/TypeSpecifyingFunctionsDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..c109cdf4
--- /dev/null
+++ b/src/Type/Php/TypeSpecifyingFunctionsDynamicReturnTypeExtension.php
@@ -0,0 +1,78 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\TypeSpecifier;
+use PHPStan\Analyser\TypeSpecifierAwareExtension;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\Rules\Comparison\ImpossibleCheckTypeHelper;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use function count;
+use function in_array;
+
+final class TypeSpecifyingFunctionsDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension, TypeSpecifierAwareExtension
+{
+
+	private TypeSpecifier $typeSpecifier;
+
+	private ?ImpossibleCheckTypeHelper $helper = null;
+
+	/**
+	 * @param string[] $universalObjectCratesClasses
+	 */
+	public function __construct(private ReflectionProvider $reflectionProvider, private bool $treatPhpDocTypesAsCertain, private array $universalObjectCratesClasses)
+	{
+	}
+
+	public function setTypeSpecifier(TypeSpecifier $typeSpecifier): void
+	{
+		$this->typeSpecifier = $typeSpecifier;
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return in_array($functionReflection->getName(), [
+			'array_key_exists',
+			'key_exists',
+			'in_array',
+			'is_subclass_of',
+		], true);
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		if (count($functionCall->getArgs()) === 0) {
+			return null;
+		}
+
+		$isAlways = $this->getHelper()->findSpecifiedType(
+			$scope,
+			$functionCall,
+		);
+		if ($isAlways === null) {
+			return null;
+		}
+
+		return new ConstantBooleanType($isAlways);
+	}
+
+	private function getHelper(): ImpossibleCheckTypeHelper
+	{
+		if ($this->helper === null) {
+			$this->helper = new ImpossibleCheckTypeHelper($this->reflectionProvider, $this->typeSpecifier, $this->universalObjectCratesClasses, $this->treatPhpDocTypesAsCertain);
+		}
+
+		return $this->helper;
+	}
+
+}
diff --git a/src/Type/Php/VersionCompareFunctionDynamicReturnTypeExtension.php b/src/Type/Php/VersionCompareFunctionDynamicReturnTypeExtension.php
new file mode 100644
index 00000000..61c9751b
--- /dev/null
+++ b/src/Type/Php/VersionCompareFunctionDynamicReturnTypeExtension.php
@@ -0,0 +1,125 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\FuncCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Php\ComposerPhpVersionFactory;
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\FunctionReflection;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\DynamicFunctionReturnTypeExtension;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_filter;
+use function count;
+use function is_array;
+use function version_compare;
+
+final class VersionCompareFunctionDynamicReturnTypeExtension implements DynamicFunctionReturnTypeExtension
+{
+
+	/**
+	 * @param int|array{min: int, max: int}|null $configPhpVersion
+	 */
+	public function __construct(
+		private int|array|null $configPhpVersion,
+		private ComposerPhpVersionFactory $composerPhpVersionFactory,
+	)
+	{
+	}
+
+	public function isFunctionSupported(FunctionReflection $functionReflection): bool
+	{
+		return $functionReflection->getName() === 'version_compare';
+	}
+
+	public function getTypeFromFunctionCall(
+		FunctionReflection $functionReflection,
+		FuncCall $functionCall,
+		Scope $scope,
+	): ?Type
+	{
+		$args = $functionCall->getArgs();
+		if (count($args) < 2) {
+			return null;
+		}
+
+		$version1Strings = $this->getVersionStrings($args[0]->value, $scope);
+		$version2Strings = $this->getVersionStrings($args[1]->value, $scope);
+		$counts = [
+			count($version1Strings),
+			count($version2Strings),
+		];
+
+		if (isset($args[2])) {
+			$operatorStrings = $scope->getType($args[2]->value)->getConstantStrings();
+			$counts[] = count($operatorStrings);
+			$returnType = new BooleanType();
+		} else {
+			$returnType = TypeCombinator::union(
+				new ConstantIntegerType(-1),
+				new ConstantIntegerType(0),
+				new ConstantIntegerType(1),
+			);
+		}
+
+		if (count(array_filter($counts, static fn (int $count): bool => $count === 0)) > 0) {
+			return $returnType; // one of the arguments is not a constant string
+		}
+
+		if (count(array_filter($counts, static fn (int $count): bool => $count > 1)) > 1) {
+			return $returnType; // more than one argument can have multiple possibilities, avoid combinatorial explosion
+		}
+
+		$types = [];
+		foreach ($version1Strings as $version1String) {
+			foreach ($version2Strings as $version2String) {
+				if (isset($operatorStrings)) {
+					foreach ($operatorStrings as $operatorString) {
+						$value = version_compare($version1String->getValue(), $version2String->getValue(), $operatorString->getValue());
+						$types[$value] = new ConstantBooleanType($value);
+					}
+				} else {
+					$value = version_compare($version1String->getValue(), $version2String->getValue());
+					$types[$value] = new ConstantIntegerType($value);
+				}
+			}
+		}
+		return TypeCombinator::union(...$types);
+	}
+
+	/**
+	 * @return ConstantStringType[]
+	 */
+	private function getVersionStrings(Expr $expr, Scope $scope): array
+	{
+		if (
+			$expr instanceof Expr\ConstFetch
+			&& $expr->name->toString() === 'PHP_VERSION'
+		) {
+			if (is_array($this->configPhpVersion)) {
+				$minVersion = new PhpVersion($this->configPhpVersion['min']);
+				$maxVersion = new PhpVersion($this->configPhpVersion['max']);
+			} else {
+				$minVersion = $this->composerPhpVersionFactory->getMinVersion();
+				$maxVersion = $this->composerPhpVersionFactory->getMaxVersion();
+			}
+
+			if ($minVersion !== null && $maxVersion !== null) {
+				return [
+					new ConstantStringType($minVersion->getVersionString()),
+					new ConstantStringType($maxVersion->getVersionString()),
+				];
+			}
+		}
+
+		return $scope->getType($expr)->getConstantStrings();
+	}
+
+}
diff --git a/src/Type/Php/XMLReaderOpenReturnTypeExtension.php b/src/Type/Php/XMLReaderOpenReturnTypeExtension.php
new file mode 100644
index 00000000..eb1afd2d
--- /dev/null
+++ b/src/Type/Php/XMLReaderOpenReturnTypeExtension.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Type\Php;
+return;
+
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\DynamicMethodReturnTypeExtension;
+use PHPStan\Type\DynamicStaticMethodReturnTypeExtension;
+use PHPStan\Type\ObjectType;
+use PHPStan\Type\Type;
+use PHPStan\Type\UnionType;
+
+final class XMLReaderOpenReturnTypeExtension implements DynamicMethodReturnTypeExtension, DynamicStaticMethodReturnTypeExtension
+{
+
+	private const XML_READER_CLASS = 'XMLReader';
+
+	public function getClass(): string
+	{
+		return self::XML_READER_CLASS;
+	}
+
+	public function isMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $methodReflection->getName() === 'open';
+	}
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection): bool
+	{
+		return $this->isMethodSupported($methodReflection);
+	}
+
+	public function getTypeFromMethodCall(MethodReflection $methodReflection, MethodCall $methodCall, Scope $scope): Type
+	{
+		return new BooleanType();
+	}
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, Scope $scope): Type
+	{
+		return new UnionType([new ObjectType(self::XML_READER_CLASS), new ConstantBooleanType(false)]);
+	}
+
+}
diff --git a/src/Type/RecursionGuard.php b/src/Type/RecursionGuard.php
new file mode 100644
index 00000000..1c55ddfc
--- /dev/null
+++ b/src/Type/RecursionGuard.php
@@ -0,0 +1,32 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class RecursionGuard
+{
+
+	/** @var true[] */
+	private static array $context = [];
+
+	/**
+	 * @template T
+	 * @param callable(): T $callback
+	 * @return T|ErrorType
+	 */
+	public static function run(Type $type, callable $callback)
+	{
+		$key = $type->describe(VerbosityLevel::value());
+		if (isset(self::$context[$key])) {
+			return new ErrorType();
+		}
+
+		try {
+			self::$context[$key] = true;
+			return $callback();
+		} finally {
+			unset(self::$context[$key]);
+		}
+	}
+
+}
diff --git a/src/Type/Regex/RegexAlternation.php b/src/Type/Regex/RegexAlternation.php
new file mode 100644
index 00000000..fadd6cf8
--- /dev/null
+++ b/src/Type/Regex/RegexAlternation.php
@@ -0,0 +1,48 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+use function array_key_exists;
+
+final class RegexAlternation
+{
+
+	/** @var array<int, list<int>> */
+	private array $groupCombinations = [];
+
+	public function __construct(
+		private readonly int $alternationId,
+		private readonly int $alternationsCount,
+	)
+	{
+	}
+
+	public function getId(): int
+	{
+		return $this->alternationId;
+	}
+
+	public function pushGroup(int $combinationIndex, RegexCapturingGroup $group): void
+	{
+		if (!array_key_exists($combinationIndex, $this->groupCombinations)) {
+			$this->groupCombinations[$combinationIndex] = [];
+		}
+
+		$this->groupCombinations[$combinationIndex][] = $group->getId();
+	}
+
+	public function getAlternationsCount(): int
+	{
+		return $this->alternationsCount;
+	}
+
+	/**
+	 * @return array<int, list<int>>
+	 */
+	public function getGroupCombinations(): array
+	{
+		return $this->groupCombinations;
+	}
+
+}
diff --git a/src/Type/Regex/RegexAstWalkResult.php b/src/Type/Regex/RegexAstWalkResult.php
new file mode 100644
index 00000000..d3cccd94
--- /dev/null
+++ b/src/Type/Regex/RegexAstWalkResult.php
@@ -0,0 +1,106 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+/** @immutable */
+final class RegexAstWalkResult
+{
+
+	/**
+	 * @param array<int, RegexCapturingGroup> $capturingGroups
+	 * @param list<string> $markVerbs
+	 */
+	public function __construct(
+		private int $alternationId,
+		private int $captureGroupId,
+		private array $capturingGroups,
+		private array $markVerbs,
+	)
+	{
+	}
+
+	public static function createEmpty(): self
+	{
+		return new self(
+			-1,
+			// use different start-index for groups to make it easier to distinguish groupids from other ids
+			100,
+			[],
+			[],
+		);
+	}
+
+	public function nextAlternationId(): self
+	{
+		return new self(
+			$this->alternationId + 1,
+			$this->captureGroupId,
+			$this->capturingGroups,
+			$this->markVerbs,
+		);
+	}
+
+	public function nextCaptureGroupId(): self
+	{
+		return new self(
+			$this->alternationId,
+			$this->captureGroupId + 1,
+			$this->capturingGroups,
+			$this->markVerbs,
+		);
+	}
+
+	public function addCapturingGroup(RegexCapturingGroup $group): self
+	{
+		$capturingGroups = $this->capturingGroups;
+		$capturingGroups[$group->getId()] = $group;
+
+		return new self(
+			$this->alternationId,
+			$this->captureGroupId,
+			$capturingGroups,
+			$this->markVerbs,
+		);
+	}
+
+	public function markVerb(string $markVerb): self
+	{
+		$verbs = $this->markVerbs;
+		$verbs[] = $markVerb;
+
+		return new self(
+			$this->alternationId,
+			$this->captureGroupId,
+			$this->capturingGroups,
+			$verbs,
+		);
+	}
+
+	public function getAlternationId(): int
+	{
+		return $this->alternationId;
+	}
+
+	public function getCaptureGroupId(): int
+	{
+		return $this->captureGroupId;
+	}
+
+	/**
+	 * @return array<int, RegexCapturingGroup>
+	 */
+	public function getCapturingGroups(): array
+	{
+		return $this->capturingGroups;
+	}
+
+	/**
+	 * @return list<string>
+	 */
+	public function getMarkVerbs(): array
+	{
+		return $this->markVerbs;
+	}
+
+}
diff --git a/src/Type/Regex/RegexCapturingGroup.php b/src/Type/Regex/RegexCapturingGroup.php
new file mode 100644
index 00000000..86fbb88a
--- /dev/null
+++ b/src/Type/Regex/RegexCapturingGroup.php
@@ -0,0 +1,132 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+use PHPStan\Type\Type;
+
+final class RegexCapturingGroup
+{
+
+	private bool $forceNonOptional = false;
+
+	private ?Type $forceType = null;
+
+	public function __construct(
+		private readonly int $id,
+		private readonly ?string $name,
+		private readonly ?RegexAlternation $alternation,
+		private readonly bool $inOptionalQuantification,
+		private readonly RegexCapturingGroup|RegexNonCapturingGroup|null $parent,
+		private readonly Type $type,
+	)
+	{
+	}
+
+	public function getId(): int
+	{
+		return $this->id;
+	}
+
+	public function forceNonOptional(): void
+	{
+		$this->forceNonOptional = true;
+	}
+
+	public function forceType(Type $type): void
+	{
+		$this->forceType = $type;
+	}
+
+	public function clearOverrides(): void
+	{
+		$this->forceNonOptional = false;
+		$this->forceType = null;
+	}
+
+	public function resetsGroupCounter(): bool
+	{
+		return $this->parent instanceof RegexNonCapturingGroup && $this->parent->resetsGroupCounter();
+	}
+
+	/**
+	 * @phpstan-assert-if-true !null $this->getAlternationId()
+	 * @phpstan-assert-if-true !null $this->getAlternation()
+	 */
+	public function inAlternation(): bool
+	{
+		return $this->alternation !== null;
+	}
+
+	public function getAlternation(): ?RegexAlternation
+	{
+		return $this->alternation;
+	}
+
+	public function getAlternationId(): ?int
+	{
+		if ($this->alternation === null) {
+			return null;
+		}
+
+		return $this->alternation->getId();
+	}
+
+	public function isOptional(): bool
+	{
+		if ($this->forceNonOptional) {
+			return false;
+		}
+
+		return $this->inAlternation()
+			|| $this->inOptionalQuantification
+			|| $this->parent !== null && $this->parent->isOptional();
+	}
+
+	public function inOptionalQuantification(): bool
+	{
+		return $this->inOptionalQuantification;
+	}
+
+	public function inOptionalAlternation(): bool
+	{
+		if (!$this->inAlternation()) {
+			return false;
+		}
+
+		$parent = $this->parent;
+		while ($parent !== null && $parent->getAlternationId() === $this->getAlternationId()) {
+			if (!$parent instanceof RegexNonCapturingGroup) {
+				return false;
+			}
+			$parent = $parent->getParent();
+		}
+		return $parent !== null && $parent->isOptional();
+	}
+
+	public function isTopLevel(): bool
+	{
+		return $this->parent === null
+			|| $this->parent instanceof RegexNonCapturingGroup && $this->parent->isTopLevel();
+	}
+
+	/** @phpstan-assert-if-true !null $this->getName() */
+	public function isNamed(): bool
+	{
+		return $this->name !== null;
+	}
+
+	public function getName(): ?string
+	{
+		return $this->name;
+	}
+
+	public function getType(): Type
+	{
+		if ($this->forceType !== null) {
+			return $this->forceType;
+		}
+		return $this->type;
+	}
+
+}
diff --git a/src/Type/Regex/RegexExpressionHelper.php b/src/Type/Regex/RegexExpressionHelper.php
new file mode 100644
index 00000000..9bd1bf9e
--- /dev/null
+++ b/src/Type/Regex/RegexExpressionHelper.php
@@ -0,0 +1,163 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\BinaryOp\Concat;
+use PhpParser\Node\Name;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_key_exists;
+use function ltrim;
+use function strrpos;
+use function substr;
+
+final class RegexExpressionHelper
+{
+
+	public function __construct(
+		private InitializerExprTypeResolver $initializerExprTypeResolver,
+	)
+	{
+	}
+
+	/**
+	 * Ignores preg_quote() calls in the concatenation as these are not relevant for array-shape matching.
+	 *
+	 * This assumption only works for the ArrayShapeMatcher therefore it is not implemented for the common case in Scope.
+	 *
+	 * see https://github.com/phpstan/phpstan-src/pull/3233#discussion_r1676938085
+	 */
+	public function resolvePatternConcat(Concat $concat, Scope $scope): Type
+	{
+		$resolver = new class($scope) {
+
+			public function __construct(private Scope $scope)
+			{
+			}
+
+			public function resolve(Expr $expr): Type
+			{
+				// assume preg_quote() cannot create capturing groups or contain meta characters.
+				// replace it with a pattern which matches anything, does not affect $matches results
+				// and does not produce regex errors when followed by a quantifier.
+				// this allows us to turn string concatenations with preg_quote() into static analyzable strings.
+				if (
+					$expr instanceof Expr\FuncCall
+					&& $expr->name instanceof Name
+					&& $expr->name->toLowerString() === 'preg_quote'
+				) {
+					return new ConstantStringType('(?:.*)');
+				}
+
+				if ($expr instanceof Concat) {
+					$left = $this->resolve($expr->left);
+					$right = $this->resolve($expr->right);
+
+					$strings = [];
+					foreach ($left->toString()->getConstantStrings() as $leftString) {
+						foreach ($right->toString()->getConstantStrings() as $rightString) {
+							$strings[] = new ConstantStringType($leftString->getValue() . $rightString->getValue());
+						}
+					}
+
+					return TypeCombinator::union(...$strings);
+				}
+
+				return $this->scope->getType($expr);
+			}
+
+		};
+
+		return $this->initializerExprTypeResolver->getConcatType($concat->left, $concat->right, static fn (Expr $expr): Type => $resolver->resolve($expr));
+	}
+
+	public function getPatternModifiers(string $pattern): ?string
+	{
+		$endDelimiterPos = $this->getEndDelimiterPos($pattern);
+
+		if ($endDelimiterPos === false) {
+			return null;
+		}
+
+		return substr($pattern, $endDelimiterPos + 1);
+	}
+
+	public function removeDelimitersAndModifiers(string $pattern): string
+	{
+		$pattern = ltrim($pattern);
+
+		$endDelimiterPos = $this->getEndDelimiterPos($pattern);
+
+		if ($endDelimiterPos === false) {
+			return $pattern;
+		}
+
+		return substr($pattern, 1, $endDelimiterPos - 1);
+	}
+
+	private function getEndDelimiterPos(string $pattern): false|int
+	{
+		$startDelimiter = $this->getPatternDelimiter($pattern);
+		if ($startDelimiter === null) {
+			return false;
+		}
+
+		// delimiter variants, see https://www.php.net/manual/en/regexp.reference.delimiters.php
+		$bracketStyleDelimiters = [
+			'{' => '}',
+			'(' => ')',
+			'[' => ']',
+			'<' => '>',
+		];
+		if (array_key_exists($startDelimiter, $bracketStyleDelimiters)) {
+			$endDelimiterPos = strrpos($pattern, $bracketStyleDelimiters[$startDelimiter]);
+		} else {
+			// same start and end delimiter
+			$endDelimiterPos = strrpos($pattern, $startDelimiter);
+		}
+
+		return $endDelimiterPos;
+	}
+
+	/**
+	 * Get delimiters from non-constant patterns, if possible.
+	 *
+	 * @return string[]
+	 */
+	public function getPatternDelimiters(Concat $concat, Scope $scope): array
+	{
+		if ($concat->left instanceof Concat) {
+			return $this->getPatternDelimiters($concat->left, $scope);
+		}
+
+		$left = $scope->getType($concat->left);
+
+		$delimiters = [];
+		foreach ($left->getConstantStrings() as $leftString) {
+			$delimiter = $this->getPatternDelimiter($leftString->getValue());
+			if ($delimiter === null) {
+				continue;
+			}
+
+			$delimiters[] = $delimiter;
+		}
+		return $delimiters;
+	}
+
+	private function getPatternDelimiter(string $regex): ?string
+	{
+		$regex = ltrim($regex);
+
+		if ($regex === '') {
+			return null;
+		}
+
+		return substr($regex, 0, 1);
+	}
+
+}
diff --git a/src/Type/Regex/RegexGroupParser.php b/src/Type/Regex/RegexGroupParser.php
new file mode 100644
index 00000000..e48eb7f5
--- /dev/null
+++ b/src/Type/Regex/RegexGroupParser.php
@@ -0,0 +1,689 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+use Hoa\Compiler\Llk\Llk;
+use Hoa\Compiler\Llk\Parser;
+use Hoa\Compiler\Llk\TreeNode;
+use Hoa\Exception\Exception;
+use Hoa\File\Read;
+use Nette\Utils\RegexpException;
+use Nette\Utils\Strings;
+use PHPStan\Php\PhpVersion;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function array_values;
+use function count;
+use function in_array;
+use function is_int;
+use function preg_replace;
+use function rtrim;
+use function sscanf;
+use function str_contains;
+use function str_replace;
+use function strlen;
+use function substr;
+use function trim;
+
+final class RegexGroupParser
+{
+
+	private const NOT_SUPPORTED_MODIFIERS = [
+		'J', // rare modifier too complicated to support
+	];
+
+	private static ?Parser $parser = null;
+
+	public function __construct(
+		private PhpVersion $phpVersion,
+		private RegexExpressionHelper $regexExpressionHelper,
+	)
+	{
+	}
+
+	/**
+	 * @return array{array<int, RegexCapturingGroup>, list<string>}|null
+	 */
+	public function parseGroups(string $regex): ?array
+	{
+		if (self::$parser === null) {
+			/** @throws void */
+			self::$parser = Llk::load(new Read(__DIR__ . '/../../../resources/RegexGrammar.pp'));
+		}
+
+		try {
+			Strings::match('', $regex);
+		} catch (RegexpException) {
+			// pattern is invalid, so let the RegularExpressionPatternRule report it
+			return null;
+		}
+
+		$modifiers = $this->regexExpressionHelper->getPatternModifiers($regex) ?? '';
+		foreach (self::NOT_SUPPORTED_MODIFIERS as $notSupportedModifier) {
+			if (str_contains($modifiers, $notSupportedModifier)) {
+				return null;
+			}
+		}
+
+		if (str_contains($modifiers, 'x')) {
+			// in freespacing mode the # character starts a comment and runs until the end of the line
+			$regex = preg_replace('/(?<!\?)#.*/', '', $regex) ?? '';
+		}
+
+		$rawRegex = $this->regexExpressionHelper->removeDelimitersAndModifiers($regex);
+		try {
+			$ast = self::$parser->parse($rawRegex);
+		} catch (Exception) {
+			return null;
+		}
+
+		$this->updateAlternationAstRemoveVerticalBarsAndAddEmptyToken($ast);
+		$this->updateCapturingAstAddEmptyToken($ast);
+
+		$captureOnlyNamed = false;
+		if ($this->phpVersion->supportsPregCaptureOnlyNamedGroups()) {
+			$captureOnlyNamed = str_contains($modifiers, 'n');
+		}
+
+		$astWalkResult = $this->walkRegexAst(
+			$ast,
+			null,
+			0,
+			false,
+			null,
+			$captureOnlyNamed,
+			false,
+			$modifiers,
+			RegexAstWalkResult::createEmpty(),
+		);
+
+		return [$astWalkResult->getCapturingGroups(), $astWalkResult->getMarkVerbs()];
+	}
+
+	private function createEmptyTokenTreeNode(TreeNode $parentAst): TreeNode
+	{
+		return new TreeNode('token', ['token' => 'literal', 'value' => '', 'namespace' => 'default'], [], $parentAst);
+	}
+
+	private function updateAlternationAstRemoveVerticalBarsAndAddEmptyToken(TreeNode $ast): void
+	{
+		$children = $ast->getChildren();
+
+		foreach ($children as $i => $child) {
+			$this->updateAlternationAstRemoveVerticalBarsAndAddEmptyToken($child);
+
+			if ($ast->getId() !== '#alternation' || $child->getValueToken() !== 'alternation') {
+				continue;
+			}
+
+			unset($children[$i]);
+
+			if ($i !== 0
+				&& isset($children[$i + 1])
+				&& $children[$i + 1]->getValueToken() !== 'alternation') {
+				continue;
+			}
+
+			$children[$i] = $this->createEmptyTokenTreeNode($ast);
+		}
+
+		$ast->setChildren(array_values($children));
+	}
+
+	private function updateCapturingAstAddEmptyToken(TreeNode $ast): void
+	{
+		foreach ($ast->getChildren() as $child) {
+			$this->updateCapturingAstAddEmptyToken($child);
+		}
+
+		if ($ast->getId() !== '#capturing' || $ast->getChildren() !== []) {
+			return;
+		}
+
+		$emptyAlternationAst = new TreeNode('#alternation', null, [], $ast);
+		$emptyAlternationAst->setChildren([$this->createEmptyTokenTreeNode($emptyAlternationAst)]);
+		$ast->setChildren([$emptyAlternationAst]);
+	}
+
+	private function walkRegexAst(
+		TreeNode $ast,
+		?RegexAlternation $alternation,
+		int $combinationIndex,
+		bool $inOptionalQuantification,
+		RegexCapturingGroup|RegexNonCapturingGroup|null $parentGroup,
+		bool $captureOnlyNamed,
+		bool $repeatedMoreThanOnce,
+		string $patternModifiers,
+		RegexAstWalkResult $astWalkResult,
+	): RegexAstWalkResult
+	{
+		$group = null;
+		if ($ast->getId() === '#capturing') {
+			$astWalkResult = $astWalkResult->nextCaptureGroupId();
+
+			$group = new RegexCapturingGroup(
+				$astWalkResult->getCaptureGroupId(),
+				null,
+				$alternation,
+				$inOptionalQuantification,
+				$parentGroup,
+				$this->createGroupType(
+					$ast,
+					$this->allowConstantTypes($patternModifiers, $repeatedMoreThanOnce, $parentGroup),
+					$patternModifiers,
+				),
+			);
+			$parentGroup = $group;
+		} elseif ($ast->getId() === '#namedcapturing') {
+			$astWalkResult = $astWalkResult->nextCaptureGroupId();
+
+			$name = $ast->getChild(0)->getValueValue();
+			$group = new RegexCapturingGroup(
+				$astWalkResult->getCaptureGroupId(),
+				$name,
+				$alternation,
+				$inOptionalQuantification,
+				$parentGroup,
+				$this->createGroupType(
+					$ast,
+					$this->allowConstantTypes($patternModifiers, $repeatedMoreThanOnce, $parentGroup),
+					$patternModifiers,
+				),
+			);
+			$parentGroup = $group;
+		} elseif ($ast->getId() === '#noncapturing') {
+			$group = new RegexNonCapturingGroup(
+				$alternation,
+				$inOptionalQuantification,
+				$parentGroup,
+				false,
+			);
+			$parentGroup = $group;
+		} elseif ($ast->getId() === '#noncapturingreset') {
+			$group = new RegexNonCapturingGroup(
+				$alternation,
+				$inOptionalQuantification,
+				$parentGroup,
+				true,
+			);
+			$parentGroup = $group;
+		}
+
+		$inOptionalQuantification = false;
+		if ($ast->getId() === '#quantification') {
+			[$min, $max] = $this->getQuantificationRange($ast);
+
+			if ($min === 0) {
+				$inOptionalQuantification = true;
+			}
+
+			if ($max === null || $max > 1) {
+				$repeatedMoreThanOnce = true;
+			}
+		}
+
+		if ($ast->getId() === '#alternation') {
+			$astWalkResult = $astWalkResult->nextAlternationId();
+			$alternation = new RegexAlternation($astWalkResult->getAlternationId(), count($ast->getChildren()));
+		}
+
+		if ($ast->getId() === '#mark') {
+			return $astWalkResult->markVerb($ast->getChild(0)->getValueValue());
+		}
+
+		if (
+			$group instanceof RegexCapturingGroup &&
+			(!$captureOnlyNamed || $group->isNamed())
+		) {
+			$astWalkResult = $astWalkResult->addCapturingGroup($group);
+
+			if ($alternation !== null) {
+				$alternation->pushGroup($combinationIndex, $group);
+			}
+		}
+
+		foreach ($ast->getChildren() as $child) {
+			$astWalkResult = $this->walkRegexAst(
+				$child,
+				$alternation,
+				$combinationIndex,
+				$inOptionalQuantification,
+				$parentGroup,
+				$captureOnlyNamed,
+				$repeatedMoreThanOnce,
+				$patternModifiers,
+				$astWalkResult,
+			);
+
+			if ($ast->getId() !== '#alternation') {
+				continue;
+			}
+
+			$combinationIndex++;
+		}
+
+		return $astWalkResult;
+	}
+
+	private function allowConstantTypes(
+		string $patternModifiers,
+		bool $repeatedMoreThanOnce,
+		RegexCapturingGroup|RegexNonCapturingGroup|null $parentGroup,
+	): bool
+	{
+		if (str_contains($patternModifiers, 'i')) {
+			// if caseless, we don't use constant types
+			// because it likely yields too many combinations
+			return false;
+		}
+
+		if ($repeatedMoreThanOnce) {
+			return false;
+		}
+
+		if ($parentGroup !== null && $parentGroup->resetsGroupCounter()) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/** @return array{?int, ?int} */
+	private function getQuantificationRange(TreeNode $node): array
+	{
+		if ($node->getId() !== '#quantification') {
+			throw new ShouldNotHappenException();
+		}
+
+		$min = null;
+		$max = null;
+
+		$lastChild = $node->getChild($node->getChildrenNumber() - 1);
+		$value = $lastChild->getValue();
+
+		// normalize away possessive and lazy quantifier-modifiers
+		$token = str_replace(['_possessive', '_lazy'], '', $value['token']);
+		$value = rtrim($value['value'], '+?');
+
+		if ($token === 'n_to_m') {
+			if (sscanf($value, '{%d,%d}', $n, $m) !== 2 || !is_int($n) || !is_int($m)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$min = $n;
+			$max = $m;
+		} elseif ($token === 'n_or_more') {
+			if (sscanf($value, '{%d,}', $n) !== 1 || !is_int($n)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$min = $n;
+		} elseif ($token === 'exactly_n') {
+			if (sscanf($value, '{%d}', $n) !== 1 || !is_int($n)) {
+				throw new ShouldNotHappenException();
+			}
+
+			$min = $n;
+			$max = $n;
+		} elseif ($token === 'zero_or_one') {
+			$min = 0;
+			$max = 1;
+		} elseif ($token === 'zero_or_more') {
+			$min = 0;
+		} elseif ($token === 'one_or_more') {
+			$min = 1;
+		}
+
+		return [$min, $max];
+	}
+
+	private function createGroupType(TreeNode $group, bool $maybeConstant, string $patternModifiers): Type
+	{
+		$rootAlternation = $this->getRootAlternation($group);
+		if ($rootAlternation !== null) {
+			$types = [];
+			foreach ($rootAlternation->getChildren() as $alternative) {
+				$types[] = $this->createGroupType($alternative, $maybeConstant, $patternModifiers);
+			}
+
+			return TypeCombinator::union(...$types);
+		}
+
+		$walkResult = $this->walkGroupAst(
+			$group,
+			false,
+			false,
+			$patternModifiers,
+			RegexGroupWalkResult::createEmpty(),
+		);
+
+		if ($maybeConstant && $walkResult->getOnlyLiterals() !== null && $walkResult->getOnlyLiterals() !== []) {
+			$result = [];
+			foreach ($walkResult->getOnlyLiterals() as $literal) {
+				$result[] = new ConstantStringType($literal);
+
+			}
+			return TypeCombinator::union(...$result);
+		}
+
+		if ($walkResult->isNumeric()->yes()) {
+			if ($walkResult->isNonFalsy()->yes()) {
+				return new IntersectionType([
+					new StringType(),
+					new AccessoryNumericStringType(),
+					new AccessoryNonFalsyStringType(),
+				]);
+			}
+
+			$result = new IntersectionType([new StringType(), new AccessoryNumericStringType()]);
+			if (!$walkResult->isNonEmpty()->yes()) {
+				return TypeCombinator::union(new ConstantStringType(''), $result);
+			}
+			return $result;
+		} elseif ($walkResult->isNonFalsy()->yes()) {
+			return new IntersectionType([new StringType(), new AccessoryNonFalsyStringType()]);
+		} elseif ($walkResult->isNonEmpty()->yes()) {
+			return new IntersectionType([new StringType(), new AccessoryNonEmptyStringType()]);
+		}
+
+		return new StringType();
+	}
+
+	private function getRootAlternation(TreeNode $group): ?TreeNode
+	{
+		if (
+			$group->getId() === '#capturing'
+			&& count($group->getChildren()) === 1
+			&& $group->getChild(0)->getId() === '#alternation'
+		) {
+			return $group->getChild(0);
+		}
+
+		// 1st token within a named capturing group is a token holding the group-name
+		if (
+			$group->getId() === '#namedcapturing'
+			&& count($group->getChildren()) === 2
+			&& $group->getChild(1)->getId() === '#alternation'
+		) {
+			return $group->getChild(1);
+		}
+
+		return null;
+	}
+
+	private function walkGroupAst(
+		TreeNode $ast,
+		bool $inAlternation,
+		bool $inClass,
+		string $patternModifiers,
+		RegexGroupWalkResult $walkResult,
+	): RegexGroupWalkResult
+	{
+		$children = $ast->getChildren();
+
+		if (
+			$ast->getId() === '#concatenation'
+			&& count($children) > 0
+			&& !$walkResult->isInOptionalQuantification()
+		) {
+			$meaningfulTokens = 0;
+			foreach ($children as $child) {
+				$nonFalsy = false;
+				if ($this->isMaybeEmptyNode($child, $patternModifiers, $nonFalsy)) {
+					continue;
+				}
+
+				$meaningfulTokens++;
+
+				if (!$nonFalsy || $inAlternation) {
+					continue;
+				}
+
+				// a single token non-falsy on its own
+				$walkResult = $walkResult->nonFalsy(TrinaryLogic::createYes());
+				break;
+			}
+
+			if ($meaningfulTokens > 0) {
+				$walkResult = $walkResult->nonEmpty(TrinaryLogic::createYes());
+
+				// two non-empty tokens concatenated results in a non-falsy string
+				if ($meaningfulTokens > 1 && !$inAlternation) {
+					$walkResult = $walkResult->nonFalsy(TrinaryLogic::createYes());
+				}
+			}
+		} elseif ($ast->getId() === '#quantification') {
+			[$min] = $this->getQuantificationRange($ast);
+
+			if ($min === 0) {
+				$walkResult = $walkResult->inOptionalQuantification(true);
+			}
+
+			if (!$walkResult->isInOptionalQuantification()) {
+				if ($min >= 1) {
+					$walkResult = $walkResult->nonEmpty(TrinaryLogic::createYes());
+				}
+				if ($min >= 2 && !$inAlternation) {
+					$walkResult = $walkResult->nonFalsy(TrinaryLogic::createYes());
+				}
+			}
+
+			$walkResult = $walkResult->onlyLiterals(null);
+		} elseif ($ast->getId() === '#class' && $walkResult->getOnlyLiterals() !== null) {
+			$inClass = true;
+
+			$newLiterals = [];
+			foreach ($children as $child) {
+				$oldLiterals = $walkResult->getOnlyLiterals();
+
+				$this->getLiteralValue($child, $oldLiterals, true, $patternModifiers, true);
+				foreach ($oldLiterals ?? [] as $oldLiteral) {
+					$newLiterals[] = $oldLiteral;
+				}
+			}
+			$walkResult = $walkResult->onlyLiterals($newLiterals);
+		} elseif ($ast->getId() === 'token') {
+			$onlyLiterals = $walkResult->getOnlyLiterals();
+			$literalValue = $this->getLiteralValue($ast, $onlyLiterals, !$inClass, $patternModifiers, false);
+			$walkResult = $walkResult->onlyLiterals($onlyLiterals);
+
+			if ($literalValue !== null) {
+				if (Strings::match($literalValue, '/^\d+$/') === null) {
+					$walkResult = $walkResult->numeric(TrinaryLogic::createNo());
+				} elseif ($walkResult->isNumeric()->maybe()) {
+					$walkResult = $walkResult->numeric(TrinaryLogic::createYes());
+				}
+
+				if (!$walkResult->isInOptionalQuantification() && $literalValue !== '') {
+					$walkResult = $walkResult->nonEmpty(TrinaryLogic::createYes());
+				}
+			}
+		} elseif (!in_array($ast->getId(), ['#capturing', '#namedcapturing', '#alternation'], true)) {
+			$walkResult = $walkResult->onlyLiterals(null);
+		}
+
+		if ($ast->getId() === '#alternation') {
+			$newLiterals = [];
+			foreach ($children as $child) {
+				$walkResult = $this->walkGroupAst(
+					$child,
+					true,
+					$inClass,
+					$patternModifiers,
+					$walkResult->onlyLiterals([]),
+				);
+
+				if ($newLiterals === null) {
+					continue;
+				}
+
+				if (count($walkResult->getOnlyLiterals() ?? []) > 0) {
+					foreach ($walkResult->getOnlyLiterals() as $alternationLiterals) {
+						$newLiterals[] = $alternationLiterals;
+					}
+				} else {
+					$newLiterals = null;
+				}
+			}
+
+			return $walkResult->onlyLiterals($newLiterals);
+		}
+
+		// [^0-9] should not parse as numeric-string, and [^list-everything-but-numbers] is technically
+		// doable but really silly compared to just \d so we can safely assume the string is not numeric
+		// for negative classes
+		if ($ast->getId() === '#negativeclass') {
+			$walkResult = $walkResult->numeric(TrinaryLogic::createNo());
+		}
+
+		foreach ($children as $child) {
+			$walkResult = $this->walkGroupAst(
+				$child,
+				$inAlternation,
+				$inClass,
+				$patternModifiers,
+				$walkResult,
+			);
+		}
+
+		return $walkResult;
+	}
+
+	private function isMaybeEmptyNode(TreeNode $node, string $patternModifiers, bool &$isNonFalsy): bool
+	{
+		if ($node->getId() === '#quantification') {
+			[$min] = $this->getQuantificationRange($node);
+
+			if ($min > 0) {
+				return false;
+			}
+
+			if ($min === 0) {
+				return true;
+			}
+		}
+
+		$literal = $this->getLiteralValue($node, $onlyLiterals, false, $patternModifiers, false);
+		if ($literal !== null) {
+			if ($literal !== '' && $literal !== '0') {
+				$isNonFalsy = true;
+			}
+			return $literal === '';
+		}
+
+		foreach ($node->getChildren() as $child) {
+			if (!$this->isMaybeEmptyNode($child, $patternModifiers, $isNonFalsy)) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param array<string>|null $onlyLiterals
+	 */
+	private function getLiteralValue(TreeNode $node, ?array &$onlyLiterals, bool $appendLiterals, string $patternModifiers, bool $inCharacterClass): ?string
+	{
+		if ($node->getId() !== 'token') {
+			return null;
+		}
+
+		// token is the token name from grammar without the namespace so literal and class:literal are both called literal here
+		$token = $node->getValueToken();
+		$value = $node->getValueValue();
+
+		if (
+			in_array($token, [
+				'literal',
+				// literal "-" in front/back of a character class like '[-a-z]' or '[abc-]', not forming a range
+				'range',
+				// literal "[" or "]" inside character classes '[[]' or '[]]'
+				'class_', '_class',
+			], true)
+		) {
+			if (str_contains($patternModifiers, 'x') && trim($value) === '') {
+				return null;
+			}
+
+			$isEscaped = false;
+			if (strlen($value) > 1 && $value[0] === '\\') {
+				$value = substr($value, 1) ?: '';
+				$isEscaped = true;
+			}
+
+			if (
+				$appendLiterals
+				&& $onlyLiterals !== null
+			) {
+				if (
+					in_array($value, ['.'], true)
+					&& !($isEscaped || $inCharacterClass)
+				) {
+					$onlyLiterals = null;
+				} else {
+					if ($onlyLiterals === []) {
+						$onlyLiterals = [$value];
+					} else {
+						foreach ($onlyLiterals as &$literal) {
+							$literal .= $value;
+						}
+					}
+				}
+			}
+
+			return $value;
+		}
+
+		if (!in_array($token, ['capturing_name'], true)) {
+			$onlyLiterals = null;
+		}
+
+		// character escape sequences, just return a fixed string
+		if (in_array($token, ['character', 'dynamic_character', 'character_type'], true)) {
+			if ($token === 'character_type' && $value === '\d') {
+				return '0';
+			}
+
+			return $value;
+		}
+
+		// [:digit:] and the like, more support coming later
+		if ($token === 'posix_class') {
+			if ($value === '[:digit:]') {
+				return '0';
+			}
+			if (in_array($value, ['[:alpha:]', '[:alnum:]', '[:upper:]', '[:lower:]', '[:word:]', '[:ascii:]', '[:print:]', '[:xdigit:]', '[:graph:]'], true)) {
+				return 'a';
+			}
+			if ($value === '[:blank:]') {
+				return " \t";
+			}
+			if ($value === '[:cntrl:]') {
+				return "\x00\x1F";
+			}
+			if ($value === '[:space:]') {
+				return " \t\r\n\v\f";
+			}
+			if ($value === '[:punct:]') {
+				return '!"#$%&\'()*+,\-./:;<=>?@[\]^_`{|}~';
+			}
+		}
+
+		if ($token === 'anchor' || $token === 'match_point_reset') {
+			return '';
+		}
+
+		return null;
+	}
+
+}
diff --git a/src/Type/Regex/RegexGroupWalkResult.php b/src/Type/Regex/RegexGroupWalkResult.php
new file mode 100644
index 00000000..374c2602
--- /dev/null
+++ b/src/Type/Regex/RegexGroupWalkResult.php
@@ -0,0 +1,122 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+use PHPStan\TrinaryLogic;
+
+/** @immutable */
+final class RegexGroupWalkResult
+{
+
+	/**
+	 * @param array<string>|null $onlyLiterals
+	 */
+	public function __construct(
+		private bool $inOptionalQuantification,
+		private ?array $onlyLiterals,
+		private TrinaryLogic $isNonEmpty,
+		private TrinaryLogic $isNonFalsy,
+		private TrinaryLogic $isNumeric,
+	)
+	{
+	}
+
+	public static function createEmpty(): self
+	{
+		return new self(
+			false,
+			[],
+			TrinaryLogic::createMaybe(),
+			TrinaryLogic::createMaybe(),
+			TrinaryLogic::createMaybe(),
+		);
+	}
+
+	public function inOptionalQuantification(bool $inOptionalQuantification): self
+	{
+		return new self(
+			$inOptionalQuantification,
+			$this->onlyLiterals,
+			$this->isNonEmpty,
+			$this->isNonFalsy,
+			$this->isNumeric,
+		);
+	}
+
+	/**
+	 * @param array<string>|null $onlyLiterals
+	 */
+	public function onlyLiterals(?array $onlyLiterals): self
+	{
+		return new self(
+			$this->inOptionalQuantification,
+			$onlyLiterals,
+			$this->isNonEmpty,
+			$this->isNonFalsy,
+			$this->isNumeric,
+		);
+	}
+
+	public function nonEmpty(TrinaryLogic $nonEmpty): self
+	{
+		return new self(
+			$this->inOptionalQuantification,
+			$this->onlyLiterals,
+			$nonEmpty,
+			$this->isNonFalsy,
+			$this->isNumeric,
+		);
+	}
+
+	public function nonFalsy(TrinaryLogic $nonFalsy): self
+	{
+		return new self(
+			$this->inOptionalQuantification,
+			$this->onlyLiterals,
+			$this->isNonEmpty,
+			$nonFalsy,
+			$this->isNumeric,
+		);
+	}
+
+	public function numeric(TrinaryLogic $numeric): self
+	{
+		return new self(
+			$this->inOptionalQuantification,
+			$this->onlyLiterals,
+			$this->isNonEmpty,
+			$this->isNonFalsy,
+			$numeric,
+		);
+	}
+
+	public function isInOptionalQuantification(): bool
+	{
+		return $this->inOptionalQuantification;
+	}
+
+	/**
+	 * @return array<string>|null
+	 */
+	public function getOnlyLiterals(): ?array
+	{
+		return $this->onlyLiterals;
+	}
+
+	public function isNonEmpty(): TrinaryLogic
+	{
+		return $this->isNonEmpty;
+	}
+
+	public function isNonFalsy(): TrinaryLogic
+	{
+		return $this->isNonFalsy;
+	}
+
+	public function isNumeric(): TrinaryLogic
+	{
+		return $this->isNumeric;
+	}
+
+}
diff --git a/src/Type/Regex/RegexNonCapturingGroup.php b/src/Type/Regex/RegexNonCapturingGroup.php
new file mode 100644
index 00000000..c9e2f0c8
--- /dev/null
+++ b/src/Type/Regex/RegexNonCapturingGroup.php
@@ -0,0 +1,56 @@
+<?php 
+
+namespace PHPStan\Type\Regex;
+return;
+
+final class RegexNonCapturingGroup
+{
+
+	public function __construct(
+		private readonly ?RegexAlternation $alternation,
+		private readonly bool $inOptionalQuantification,
+		private readonly RegexCapturingGroup|RegexNonCapturingGroup|null $parent,
+		private readonly bool $resetGroupCounter,
+	)
+	{
+	}
+
+	/** @phpstan-assert-if-true !null $this->getAlternationId() */
+	public function inAlternation(): bool
+	{
+		return $this->alternation !== null;
+	}
+
+	public function getAlternationId(): ?int
+	{
+		if ($this->alternation === null) {
+			return null;
+		}
+
+		return $this->alternation->getId();
+	}
+
+	public function isOptional(): bool
+	{
+		return $this->inAlternation()
+			|| $this->inOptionalQuantification
+			|| ($this->parent !== null && $this->parent->isOptional());
+	}
+
+	public function isTopLevel(): bool
+	{
+		return $this->parent === null
+			|| $this->parent instanceof RegexNonCapturingGroup && $this->parent->isTopLevel();
+	}
+
+	public function getParent(): RegexCapturingGroup|RegexNonCapturingGroup|null
+	{
+		return $this->parent;
+	}
+
+	public function resetsGroupCounter(): bool
+	{
+		return $this->resetGroupCounter;
+	}
+
+}
diff --git a/src/Type/ResourceType.php b/src/Type/ResourceType.php
new file mode 100644
index 00000000..cd984abe
--- /dev/null
+++ b/src/Type/ResourceType.php
@@ -0,0 +1,130 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\TruthyBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+
+/** @api */
+class ResourceType implements Type
+{
+
+	use JustNullableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use TruthyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'resource';
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new StringType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('resource');
+	}
+
+}
diff --git a/src/Type/SimultaneousTypeTraverser.php b/src/Type/SimultaneousTypeTraverser.php
new file mode 100644
index 00000000..776525d9
--- /dev/null
+++ b/src/Type/SimultaneousTypeTraverser.php
@@ -0,0 +1,40 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class SimultaneousTypeTraverser
+{
+
+	/** @var callable(Type $left, Type $right, callable(Type, Type): Type $traverse): Type */
+	private $cb;
+
+	/**
+	 * @param callable(Type $left, Type $right, callable(Type, Type): Type $traverse): Type $cb
+	 */
+	public static function map(Type $left, Type $right, callable $cb): Type
+	{
+		$self = new self($cb);
+
+		return $self->mapInternal($left, $right);
+	}
+
+	/** @param callable(Type $left, Type $right, callable(Type, Type): Type $traverse): Type $cb */
+	private function __construct(callable $cb)
+	{
+		$this->cb = $cb;
+	}
+
+	/** @internal */
+	public function mapInternal(Type $left, Type $right): Type
+	{
+		return ($this->cb)($left, $right, [$this, 'traverseInternal']);
+	}
+
+	/** @internal */
+	public function traverseInternal(Type $left, Type $right): Type
+	{
+		return $left->traverseSimultaneously($right, [$this, 'mapInternal']);
+	}
+
+}
diff --git a/src/Type/StaticMethodParameterClosureTypeExtension.php b/src/Type/StaticMethodParameterClosureTypeExtension.php
new file mode 100644
index 00000000..d79abddc
--- /dev/null
+++ b/src/Type/StaticMethodParameterClosureTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface for parameter closure type extensions for static methods.
+ *
+ * To register it in the configuration file use the `phpstan.staticMethodParameterClosureTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.staticMethodParameterClosureTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface StaticMethodParameterClosureTypeExtension
+{
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection, ParameterReflection $parameter): bool;
+
+	public function getTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/StaticMethodParameterOutTypeExtension.php b/src/Type/StaticMethodParameterOutTypeExtension.php
new file mode 100644
index 00000000..3a335e38
--- /dev/null
+++ b/src/Type/StaticMethodParameterOutTypeExtension.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\MethodReflection;
+use PHPStan\Reflection\ParameterReflection;
+
+/**
+ * This is the interface dynamic parameter out type extensions implement for static methods.
+ *
+ * To register it in the configuration file use the `phpstan.staticMethodParameterOutTypeExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.staticMethodParameterOutTypeExtension
+ * ```
+ *
+ * @api
+ */
+interface StaticMethodParameterOutTypeExtension
+{
+
+	public function isStaticMethodSupported(MethodReflection $methodReflection, ParameterReflection $parameter): bool;
+
+	public function getParameterOutTypeFromStaticMethodCall(MethodReflection $methodReflection, StaticCall $methodCall, ParameterReflection $parameter, Scope $scope): ?Type;
+
+}
diff --git a/src/Type/StaticMethodTypeSpecifyingExtension.php b/src/Type/StaticMethodTypeSpecifyingExtension.php
new file mode 100644
index 00000000..ad041e47
--- /dev/null
+++ b/src/Type/StaticMethodTypeSpecifyingExtension.php
@@ -0,0 +1,39 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
+use PHPStan\Analyser\SpecifiedTypes;
+use PHPStan\Analyser\TypeSpecifierContext;
+use PHPStan\Reflection\MethodReflection;
+
+/**
+ * This is the interface type-specifying extensions implement for static methods.
+ *
+ * To register it in the configuration file use the `phpstan.typeSpecifier.staticMethodTypeSpecifyingExtension` service tag:
+ *
+ * ```
+ * services:
+ * 	-
+ *		class: App\PHPStan\MyExtension
+ *		tags:
+ *			- phpstan.typeSpecifier.staticMethodTypeSpecifyingExtension
+ * ```
+ *
+ * Learn more: https://phpstan.org/developing-extensions/type-specifying-extensions
+ *
+ * @api
+ */
+interface StaticMethodTypeSpecifyingExtension
+{
+
+	/** @return class-string */
+	public function getClass(): string;
+
+	public function isStaticMethodSupported(MethodReflection $staticMethodReflection, StaticCall $node, TypeSpecifierContext $context): bool;
+
+	public function specifyTypes(MethodReflection $staticMethodReflection, StaticCall $node, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes;
+
+}
diff --git a/src/Type/StaticType.php b/src/Type/StaticType.php
new file mode 100644
index 00000000..f418f656
--- /dev/null
+++ b/src/Type/StaticType.php
@@ -0,0 +1,747 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function get_class;
+use function sprintf;
+
+/** @api */
+class StaticType implements TypeWithClassName, SubtractableType
+{
+
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	private ?Type $subtractedType;
+
+	private ?ObjectType $staticObjectType = null;
+
+	private string $baseClass;
+
+	/**
+	 * @api
+	 */
+	public function __construct(
+		private ClassReflection $classReflection,
+		?Type $subtractedType = null,
+	)
+	{
+		if ($subtractedType instanceof NeverType) {
+			$subtractedType = null;
+		}
+
+		$this->subtractedType = $subtractedType;
+		$this->baseClass = $classReflection->getName();
+	}
+
+	public function getClassName(): string
+	{
+		return $this->baseClass;
+	}
+
+	public function getClassReflection(): ClassReflection
+	{
+		return $this->classReflection;
+	}
+
+	public function getAncestorWithClassName(string $className): ?TypeWithClassName
+	{
+		$ancestor = $this->getStaticObjectType()->getAncestorWithClassName($className);
+		if ($ancestor === null) {
+			return null;
+		}
+
+		$classReflection = $ancestor->getClassReflection();
+		if ($classReflection !== null) {
+			return $this->changeBaseClass($classReflection);
+		}
+
+		return null;
+	}
+
+	public function getStaticObjectType(): ObjectType
+	{
+		if ($this->staticObjectType === null) {
+			if ($this->classReflection->isGeneric()) {
+				$typeMap = $this->classReflection->getActiveTemplateTypeMap()->map(static fn (string $name, Type $type): Type => TemplateTypeHelper::toArgument($type));
+				$varianceMap = $this->classReflection->getCallSiteVarianceMap();
+				return $this->staticObjectType = new GenericObjectType(
+					$this->classReflection->getName(),
+					$this->classReflection->typeMapToList($typeMap),
+					$this->subtractedType,
+					null,
+					$this->classReflection->varianceMapToList($varianceMap),
+				);
+			}
+
+			return $this->staticObjectType = new ObjectType($this->classReflection->getName(), $this->subtractedType, $this->classReflection);
+		}
+
+		return $this->staticObjectType;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->getStaticObjectType()->getReferencedClasses();
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return $this->getStaticObjectType()->getObjectClassNames();
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return $this->getStaticObjectType()->getObjectClassReflections();
+	}
+
+	public function getArrays(): array
+	{
+		return $this->getStaticObjectType()->getArrays();
+	}
+
+	public function getConstantArrays(): array
+	{
+		return $this->getStaticObjectType()->getConstantArrays();
+	}
+
+	public function getConstantStrings(): array
+	{
+		return $this->getStaticObjectType()->getConstantStrings();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if (!$type instanceof static) {
+			return AcceptsResult::createNo();
+		}
+
+		return $this->getStaticObjectType()->accepts($type->getStaticObjectType(), $strictTypes);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return $this->getStaticObjectType()->isSuperTypeOf($type);
+		}
+
+		if ($type instanceof ObjectWithoutClassType) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof ObjectType) {
+			$result = $this->getStaticObjectType()->isSuperTypeOf($type);
+			if ($result->yes()) {
+				$classReflection = $type->getClassReflection();
+				if ($classReflection !== null && $classReflection->isFinal()) {
+					return $result;
+				}
+			}
+
+			return $result->and(IsSuperTypeOfResult::createMaybe());
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (get_class($type) !== static::class) {
+			return false;
+		}
+
+		return $this->getStaticObjectType()->equals($type->getStaticObjectType());
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('static(%s)', $this->getStaticObjectType()->describe($level));
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return $this->getStaticObjectType()->getTemplateType($ancestorClassName, $templateTypeName);
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isObject();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isEnum();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->canAccessProperties();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->hasProperty($propertyName);
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$staticObject = $this->getStaticObjectType();
+		$nakedProperty = $staticObject->getUnresolvedPropertyPrototype($propertyName, $scope)->getNakedProperty();
+
+		$ancestor = $this->getAncestorWithClassName($nakedProperty->getDeclaringClass()->getName());
+		$classReflection = null;
+		if ($ancestor !== null) {
+			$classReflection = $ancestor->getClassReflection();
+		}
+		if ($classReflection === null) {
+			$classReflection = $nakedProperty->getDeclaringClass();
+		}
+
+		return new CallbackUnresolvedPropertyPrototypeReflection(
+			$nakedProperty,
+			$classReflection,
+			false,
+			fn (Type $type): Type => $this->transformStaticType($type, $scope),
+		);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->canCallMethods();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->hasMethod($methodName);
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$staticObject = $this->getStaticObjectType();
+		$nakedMethod = $staticObject->getUnresolvedMethodPrototype($methodName, $scope)->getNakedMethod();
+
+		$ancestor = $this->getAncestorWithClassName($nakedMethod->getDeclaringClass()->getName());
+		$classReflection = null;
+		if ($ancestor !== null) {
+			$classReflection = $ancestor->getClassReflection();
+		}
+		if ($classReflection === null) {
+			$classReflection = $nakedMethod->getDeclaringClass();
+		}
+
+		return new CallbackUnresolvedMethodPrototypeReflection(
+			$nakedMethod,
+			$classReflection,
+			false,
+			fn (Type $type): Type => $this->transformStaticType($type, $scope),
+		);
+	}
+
+	private function transformStaticType(Type $type, ClassMemberAccessAnswerer $scope): Type
+	{
+		return TypeTraverser::map($type, function (Type $type, callable $traverse) use ($scope): Type {
+			if ($type instanceof StaticType) {
+				$classReflection = $this->classReflection;
+				$isFinal = false;
+				if ($scope->isInClass()) {
+					$classReflection = $scope->getClassReflection();
+					$isFinal = $classReflection->isFinal();
+				}
+				$type = $type->changeBaseClass($classReflection);
+				if (!$isFinal || $type instanceof ThisType) {
+					return $traverse($type);
+				}
+
+				return $traverse($type->getStaticObjectType());
+			}
+
+			return $traverse($type);
+		});
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->canAccessConstants();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->hasConstant($constantName);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return $this->getStaticObjectType()->getConstant($constantName);
+	}
+
+	public function changeBaseClass(ClassReflection $classReflection): self
+	{
+		return new self($classReflection, $this->subtractedType);
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isIterable();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isIterableAtLeastOnce();
+	}
+
+	public function getArraySize(): Type
+	{
+		return $this->getStaticObjectType()->getArraySize();
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this->getStaticObjectType()->getIterableKeyType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->getStaticObjectType()->getFirstIterableKeyType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->getStaticObjectType()->getLastIterableKeyType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->getStaticObjectType()->getIterableValueType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->getStaticObjectType()->getFirstIterableValueType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->getStaticObjectType()->getLastIterableValueType();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isOffsetAccessible();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isOffsetAccessLegal();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->hasOffsetValueType($offsetType);
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return $this->getStaticObjectType()->getOffsetValueType($offsetType);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this->getStaticObjectType()->setOffsetValueType($offsetType, $valueType, $unionValues);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this->getStaticObjectType()->setExistingOffsetValueType($offsetType, $valueType);
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this->getStaticObjectType()->unsetOffset($offsetType);
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this->getStaticObjectType()->getKeysArray();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this->getStaticObjectType()->getValuesArray();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->getStaticObjectType()->chunkArray($lengthType, $preserveKeys);
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this->getStaticObjectType()->fillKeysArray($valueType);
+	}
+
+	public function flipArray(): Type
+	{
+		return $this->getStaticObjectType()->flipArray();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return $this->getStaticObjectType()->intersectKeyArray($otherArraysType);
+	}
+
+	public function popArray(): Type
+	{
+		return $this->getStaticObjectType()->popArray();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this->getStaticObjectType()->reverseArray($preserveKeys);
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return $this->getStaticObjectType()->searchArray($needleType);
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this->getStaticObjectType()->shiftArray();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this->getStaticObjectType()->shuffleArray();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->getStaticObjectType()->sliceArray($offsetType, $lengthType, $preserveKeys);
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isCallable();
+	}
+
+	public function getEnumCases(): array
+	{
+		return $this->getStaticObjectType()->getEnumCases();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isArray();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isConstantArray();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isOversizedArray();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isList();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isNull();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isConstantValue();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isConstantScalarValue();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return $this->getStaticObjectType()->getConstantScalarTypes();
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return $this->getStaticObjectType()->getConstantScalarValues();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isTrue();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isFalse();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isBoolean();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isFloat();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isInteger();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isString();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isNumericString();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isNonEmptyString();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isNonFalsyString();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isLiteralString();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isLowercaseString();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isUppercaseString();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isClassString();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return $this->getStaticObjectType()->getClassStringObjectType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this;
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isVoid();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return $this->getStaticObjectType()->isScalar();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return $this->getStaticObjectType()->getCallableParametersAcceptors($scope);
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return $this->getStaticObjectType()->toString();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return $this->getStaticObjectType()->toArray();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this->getStaticObjectType()->toArrayKey();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this->getStaticObjectType()->toCoercedArgumentType($strictTypes);
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return $this->getStaticObjectType()->toBoolean();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->subtractedType !== null ? $cb($this->subtractedType) : null;
+
+		if ($subtractedType !== $this->subtractedType) {
+			return new self(
+				$this->classReflection,
+				$subtractedType,
+			);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->subtractedType === null) {
+			return $this;
+		}
+
+		return new self($this->classReflection);
+	}
+
+	public function subtract(Type $type): Type
+	{
+		if ($this->subtractedType !== null) {
+			$type = TypeCombinator::union($this->subtractedType, $type);
+		}
+
+		return $this->changeSubtractedType($type);
+	}
+
+	public function getTypeWithoutSubtractedType(): Type
+	{
+		return $this->changeSubtractedType(null);
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		if ($subtractedType !== null) {
+			$classReflection = $this->getClassReflection();
+			if ($classReflection->getAllowedSubTypes() !== null) {
+				$objectType = $this->getStaticObjectType()->changeSubtractedType($subtractedType);
+				if ($objectType instanceof NeverType) {
+					return $objectType;
+				}
+
+				if ($objectType instanceof ObjectType && $objectType->getSubtractedType() !== null) {
+					return new self($classReflection, $objectType->getSubtractedType());
+				}
+
+				return TypeCombinator::intersect($this, $objectType);
+			}
+		}
+
+		return new self($this->classReflection, $subtractedType);
+	}
+
+	public function getSubtractedType(): ?Type
+	{
+		return $this->subtractedType;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($this->getStaticObjectType()->isSuperTypeOf($typeToRemove)->yes()) {
+			return $this->subtract($typeToRemove);
+		}
+
+		return null;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return $this->getStaticObjectType()->exponentiate($exponent);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return $this->getStaticObjectType()->getFiniteTypes();
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('static');
+	}
+
+}
diff --git a/src/Type/StaticTypeFactory.php b/src/Type/StaticTypeFactory.php
new file mode 100644
index 00000000..706580ed
--- /dev/null
+++ b/src/Type/StaticTypeFactory.php
@@ -0,0 +1,45 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+
+final class StaticTypeFactory
+{
+
+	public static function falsey(): Type
+	{
+		static $falsey;
+
+		if ($falsey === null) {
+			$falsey = new UnionType([
+				new NullType(),
+				new ConstantBooleanType(false),
+				new ConstantIntegerType(0),
+				new ConstantFloatType(0.0),
+				new ConstantStringType(''),
+				new ConstantStringType('0'),
+				new ConstantArrayType([], []),
+			]);
+		}
+
+		return $falsey;
+	}
+
+	public static function truthy(): Type
+	{
+		static $truthy;
+
+		if ($truthy === null) {
+			$truthy = new MixedType(false, self::falsey());
+		}
+
+		return $truthy;
+	}
+
+}
diff --git a/src/Type/StrictMixedType.php b/src/Type/StrictMixedType.php
new file mode 100644
index 00000000..c644307b
--- /dev/null
+++ b/src/Type/StrictMixedType.php
@@ -0,0 +1,444 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonCompoundTypeTrait;
+
+class StrictMixedType implements CompoundType
+{
+
+	use UndecidedComparisonCompoundTypeTrait;
+	use NonArrayTypeTrait;
+	use NonIterableTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return AcceptsResult::createYes();
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		if ($acceptingType instanceof self) {
+			return AcceptsResult::createYes();
+		}
+		if ($acceptingType instanceof MixedType && !$acceptingType instanceof TemplateMixedType) {
+			return AcceptsResult::createYes();
+		}
+
+		return AcceptsResult::createMaybe();
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		return IsSuperTypeOfResult::createYes();
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if ($otherType instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+		if ($otherType instanceof MixedType && !$otherType instanceof TemplateMixedType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		return IsSuperTypeOfResult::createMaybe();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return $level->handle(
+			static fn () => 'mixed',
+			static fn () => 'mixed',
+			static fn () => 'mixed',
+			static fn () => 'strict-mixed',
+		);
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this;
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [];
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return [];
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('mixed');
+	}
+
+}
diff --git a/src/Type/StringAlwaysAcceptingObjectWithToStringType.php b/src/Type/StringAlwaysAcceptingObjectWithToStringType.php
new file mode 100644
index 00000000..74324d38
--- /dev/null
+++ b/src/Type/StringAlwaysAcceptingObjectWithToStringType.php
@@ -0,0 +1,57 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+
+class StringAlwaysAcceptingObjectWithToStringType extends StringType
+{
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		$thatClassNames = $type->getObjectClassNames();
+		if ($thatClassNames === []) {
+			return parent::isSuperTypeOf($type);
+		}
+
+		$result = IsSuperTypeOfResult::createNo();
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		foreach ($thatClassNames as $thatClassName) {
+			if (!$reflectionProvider->hasClass($thatClassName)) {
+				return IsSuperTypeOfResult::createNo();
+			}
+
+			$typeClass = $reflectionProvider->getClass($thatClassName);
+			$result = $result->or(IsSuperTypeOfResult::createFromBoolean($typeClass->hasNativeMethod('__toString')));
+		}
+
+		return $result;
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		$thatClassNames = $type->getObjectClassNames();
+		if ($thatClassNames === []) {
+			return parent::accepts($type, $strictTypes);
+		}
+
+		$result = AcceptsResult::createNo();
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		foreach ($thatClassNames as $thatClassName) {
+			if (!$reflectionProvider->hasClass($thatClassName)) {
+				return AcceptsResult::createNo();
+			}
+
+			$typeClass = $reflectionProvider->getClass($thatClassName);
+			$result = $result->or(AcceptsResult::createFromBoolean($typeClass->hasNativeMethod('__toString')));
+		}
+
+		return $result;
+	}
+
+}
diff --git a/src/Type/StringType.php b/src/Type/StringType.php
new file mode 100644
index 00000000..a9e75f36
--- /dev/null
+++ b/src/Type/StringType.php
@@ -0,0 +1,320 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ReflectionProviderStaticAccessor;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Traits\MaybeCallableTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\UndecidedBooleanTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+use function count;
+
+/** @api */
+class StringType implements Type
+{
+
+	use JustNullableTypeTrait;
+	use MaybeCallableTypeTrait;
+	use NonArrayTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use UndecidedBooleanTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonGenericTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'string';
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $offsetType->isInteger()->and(TrinaryLogic::createMaybe());
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		if ($this->hasOffsetValueType($offsetType)->no()) {
+			return new ErrorType();
+		}
+
+		return new IntersectionType([
+			new StringType(),
+			new AccessoryNonEmptyStringType(),
+		]);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		if ($offsetType === null) {
+			return new ErrorType();
+		}
+
+		$valueStringType = $valueType->toString();
+		if ($valueStringType instanceof ErrorType) {
+			return new ErrorType();
+		}
+
+		if ($offsetType->isInteger()->yes() || $offsetType instanceof MixedType) {
+			return new IntersectionType([
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+			]);
+		}
+
+		return new ErrorType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof self) {
+			return AcceptsResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		$thatClassNames = $type->getObjectClassNames();
+		if (count($thatClassNames) > 1) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($thatClassNames === [] || $strictTypes) {
+			return AcceptsResult::createNo();
+		}
+
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+		if (!$reflectionProvider->hasClass($thatClassNames[0])) {
+			return AcceptsResult::createNo();
+		}
+
+		$typeClass = $reflectionProvider->getClass($thatClassNames[0]);
+		return AcceptsResult::createFromBoolean(
+			$typeClass->hasNativeMethod('__toString'),
+		);
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new IntegerType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new FloatType();
+	}
+
+	public function toString(): Type
+	{
+		return $this;
+	}
+
+	public function toArray(): Type
+	{
+		return new ConstantArrayType(
+			[new ConstantIntegerType(0)],
+			[$this],
+			[1],
+			[],
+			TrinaryLogic::createYes(),
+		);
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this;
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ObjectWithoutClassType();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if ($type->isArray()->yes()) {
+			return new ConstantBooleanType(false);
+		}
+
+		return new BooleanType();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		if ($this->isClassString()->yes()) {
+			return TrinaryLogic::createMaybe();
+		}
+		return TrinaryLogic::createNo();
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		if ($typeToRemove instanceof ConstantStringType && $typeToRemove->getValue() === '') {
+			return TypeCombinator::intersect($this, new AccessoryNonEmptyStringType());
+		}
+
+		if ($typeToRemove instanceof AccessoryNonEmptyStringType) {
+			return new ConstantStringType('');
+		}
+
+		return null;
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return ExponentiateHelper::exponentiate($this, $exponent);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('string');
+	}
+
+}
diff --git a/src/Type/SubtractableType.php b/src/Type/SubtractableType.php
new file mode 100644
index 00000000..0ce6f83b
--- /dev/null
+++ b/src/Type/SubtractableType.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+interface SubtractableType extends Type
+{
+
+	public function subtract(Type $type): Type;
+
+	public function getTypeWithoutSubtractedType(): Type;
+
+	public function changeSubtractedType(?Type $subtractedType): Type;
+
+	public function getSubtractedType(): ?Type;
+
+}
diff --git a/src/Type/ThisType.php b/src/Type/ThisType.php
new file mode 100644
index 00000000..d7ae937b
--- /dev/null
+++ b/src/Type/ThisType.php
@@ -0,0 +1,89 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\ThisTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\ClassReflection;
+use function sprintf;
+
+/** @api */
+class ThisType extends StaticType
+{
+
+	/**
+	 * @api
+	 */
+	public function __construct(
+		ClassReflection $classReflection,
+		?Type $subtractedType = null,
+	)
+	{
+		parent::__construct($classReflection, $subtractedType);
+	}
+
+	public function changeBaseClass(ClassReflection $classReflection): StaticType
+	{
+		return new self($classReflection, $this->getSubtractedType());
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('$this(%s)', $this->getStaticObjectType()->describe($level));
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return $this->getStaticObjectType()->isSuperTypeOf($type);
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		$parent = new parent($this->getClassReflection(), $this->getSubtractedType());
+
+		return $parent->isSuperTypeOf($type)->and(IsSuperTypeOfResult::createMaybe());
+	}
+
+	public function changeSubtractedType(?Type $subtractedType): Type
+	{
+		$type = parent::changeSubtractedType($subtractedType);
+		if ($type instanceof parent) {
+			return new self($type->getClassReflection(), $subtractedType);
+		}
+
+		return $type;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$subtractedType = $this->getSubtractedType() !== null ? $cb($this->getSubtractedType()) : null;
+
+		if ($subtractedType !== $this->getSubtractedType()) {
+			return new self(
+				$this->getClassReflection(),
+				$subtractedType,
+			);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if ($this->getSubtractedType() === null) {
+			return $this;
+		}
+
+		return new self($this->getClassReflection());
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new ThisTypeNode();
+	}
+
+}
diff --git a/src/Type/Traits/ArrayTypeTrait.php b/src/Type/Traits/ArrayTypeTrait.php
new file mode 100644
index 00000000..98bae5aa
--- /dev/null
+++ b/src/Type/Traits/ArrayTypeTrait.php
@@ -0,0 +1,212 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+trait ArrayTypeTrait
+{
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function toArray(): Type
+	{
+		return $this;
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getArrays(): array
+	{
+		return [$this];
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		$chunkType = $preserveKeys->yes()
+			? $this
+			: TypeCombinator::intersect(new ArrayType(new IntegerType(), $this->getIterableValueType()), new AccessoryArrayListType());
+		$chunkType = TypeCombinator::intersect($chunkType, new NonEmptyArrayType());
+
+		$arrayType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $chunkType), new AccessoryArrayListType());
+
+		return $this->isIterableAtLeastOnce()->yes()
+			? TypeCombinator::intersect($arrayType, new NonEmptyArrayType())
+			: $arrayType;
+	}
+
+}
diff --git a/src/Type/Traits/ConstantNumericComparisonTypeTrait.php b/src/Type/Traits/ConstantNumericComparisonTypeTrait.php
new file mode 100644
index 00000000..6dd3652d
--- /dev/null
+++ b/src/Type/Traits/ConstantNumericComparisonTypeTrait.php
@@ -0,0 +1,79 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\NullType;
+use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+
+trait ConstantNumericComparisonTypeTrait
+{
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new ConstantBooleanType(true),
+			IntegerRangeType::createAllGreaterThanOrEqualTo($this->value),
+		];
+
+		if (!(bool) $this->value) {
+			$subtractedTypes[] = new NullType();
+			$subtractedTypes[] = new ConstantBooleanType(false);
+			$subtractedTypes[] = new ConstantFloatType(0.0); // subtract range when we support float-ranges
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			IntegerRangeType::createAllGreaterThan($this->value),
+			// subtract range when we support float-ranges
+		];
+
+		if (!(bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(true);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			new NullType(),
+			new ConstantBooleanType(false),
+			new ConstantFloatType(0.0), // subtract range when we support float-ranges
+			IntegerRangeType::createAllSmallerThanOrEqualTo($this->value),
+		];
+
+		if ((bool) $this->value) {
+			$subtractedTypes[] = new ConstantBooleanType(true);
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		$subtractedTypes = [
+			IntegerRangeType::createAllSmallerThan($this->value),
+		];
+
+		if ((bool) $this->value) {
+			$subtractedTypes[] = new NullType();
+			$subtractedTypes[] = new ConstantBooleanType(false);
+			$subtractedTypes[] = new ConstantFloatType(0.0); // subtract range when we support float-ranges
+		}
+
+		return TypeCombinator::remove(new MixedType(), TypeCombinator::union(...$subtractedTypes));
+	}
+
+}
diff --git a/src/Type/Traits/ConstantScalarTypeTrait.php b/src/Type/Traits/ConstantScalarTypeTrait.php
new file mode 100644
index 00000000..ec6f201f
--- /dev/null
+++ b/src/Type/Traits/ConstantScalarTypeTrait.php
@@ -0,0 +1,129 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\LooseComparisonHelper;
+use PHPStan\Type\Type;
+
+trait ConstantScalarTypeTrait
+{
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof self) {
+			return AcceptsResult::createFromBoolean($this->equals($type));
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return parent::accepts($type, $strictTypes)->and(AcceptsResult::createMaybe());
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createFromBoolean($this->equals($type));
+		}
+
+		if ($type instanceof parent) {
+			return IsSuperTypeOfResult::createMaybe();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		if (!$this instanceof ConstantScalarType) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($type instanceof ConstantScalarType) {
+			return LooseComparisonHelper::compareConstantScalars($this, $type, $phpVersion);
+		}
+
+		if ($type->isConstantArray()->yes() && $type->isIterableAtLeastOnce()->no()) {
+			// @phpstan-ignore equal.notAllowed, equal.invalid, equal.alwaysFalse
+			return new ConstantBooleanType($this->getValue() == []); // phpcs:ignore
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->looseCompare($this, $phpVersion);
+		}
+
+		return parent::looseCompare($type, $phpVersion);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self && $this->value === $type->value;
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($otherType instanceof ConstantScalarType) {
+			return TrinaryLogic::createFromBoolean($this->value < $otherType->getValue());
+		}
+
+		if ($otherType instanceof CompoundType) {
+			return $otherType->isGreaterThan($this, $phpVersion);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		if ($otherType instanceof ConstantScalarType) {
+			return TrinaryLogic::createFromBoolean($this->value <= $otherType->getValue());
+		}
+
+		if ($otherType instanceof CompoundType) {
+			return $otherType->isGreaterThanOrEqual($this, $phpVersion);
+		}
+
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [$this];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [$this->getValue()];
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [$this];
+	}
+
+}
diff --git a/src/Type/Traits/FalseyBooleanTypeTrait.php b/src/Type/Traits/FalseyBooleanTypeTrait.php
new file mode 100644
index 00000000..7ccf9d05
--- /dev/null
+++ b/src/Type/Traits/FalseyBooleanTypeTrait.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+
+trait FalseyBooleanTypeTrait
+{
+
+	public function toBoolean(): BooleanType
+	{
+		return new ConstantBooleanType(false);
+	}
+
+}
diff --git a/src/Type/Traits/LateResolvableTypeTrait.php b/src/Type/Traits/LateResolvableTypeTrait.php
new file mode 100644
index 00000000..9c9d461c
--- /dev/null
+++ b/src/Type/Traits/LateResolvableTypeTrait.php
@@ -0,0 +1,597 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\AcceptsResult;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\CompoundType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\IsSuperTypeOfResult;
+use PHPStan\Type\LateResolvableType;
+use PHPStan\Type\NeverType;
+use PHPStan\Type\Type;
+
+trait LateResolvableTypeTrait
+{
+
+	private ?Type $result = null;
+
+	public function getObjectClassNames(): array
+	{
+		return $this->resolve()->getObjectClassNames();
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return $this->resolve()->getObjectClassReflections();
+	}
+
+	public function getArrays(): array
+	{
+		return $this->resolve()->getArrays();
+	}
+
+	public function getConstantArrays(): array
+	{
+		return $this->resolve()->getConstantArrays();
+	}
+
+	public function getConstantStrings(): array
+	{
+		return $this->resolve()->getConstantStrings();
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		return $this->resolve()->accepts($type, $strictTypes);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		return $this->isSuperTypeOfDefault($type);
+	}
+
+	private function isSuperTypeOfDefault(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof NeverType) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof LateResolvableType) {
+			$type = $type->resolve();
+		}
+
+		$isSuperType = $this->resolve()->isSuperTypeOf($type);
+
+		if (!$this->isResolvable()) {
+			$isSuperType = $isSuperType->and(IsSuperTypeOfResult::createMaybe());
+		}
+
+		return $isSuperType;
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return $this->resolve()->getTemplateType($ancestorClassName, $templateTypeName);
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return $this->resolve()->isObject();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return $this->resolve()->isEnum();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return $this->resolve()->canAccessProperties();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return $this->resolve()->hasProperty($propertyName);
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->resolve()->getProperty($propertyName, $scope);
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		return $this->resolve()->getUnresolvedPropertyPrototype($propertyName, $scope);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return $this->resolve()->canCallMethods();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return $this->resolve()->hasMethod($methodName);
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->resolve()->getMethod($methodName, $scope);
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		return $this->resolve()->getUnresolvedMethodPrototype($methodName, $scope);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->resolve()->canAccessConstants();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->resolve()->hasConstant($constantName);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return $this->resolve()->getConstant($constantName);
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return $this->resolve()->isIterable();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->resolve()->isIterableAtLeastOnce();
+	}
+
+	public function getArraySize(): Type
+	{
+		return $this->resolve()->getArraySize();
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this->resolve()->getIterableKeyType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->resolve()->getFirstIterableKeyType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->resolve()->getLastIterableKeyType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->resolve()->getIterableValueType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->resolve()->getFirstIterableValueType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->resolve()->getLastIterableValueType();
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return $this->resolve()->isArray();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return $this->resolve()->isConstantArray();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return $this->resolve()->isOversizedArray();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return $this->resolve()->isList();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return $this->resolve()->isOffsetAccessible();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return $this->resolve()->isOffsetAccessLegal();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $this->resolve()->hasOffsetValueType($offsetType);
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return $this->resolve()->getOffsetValueType($offsetType);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this->resolve()->setOffsetValueType($offsetType, $valueType, $unionValues);
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this->resolve()->setExistingOffsetValueType($offsetType, $valueType);
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this->resolve()->unsetOffset($offsetType);
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this->resolve()->getKeysArray();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this->resolve()->getValuesArray();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->resolve()->chunkArray($lengthType, $preserveKeys);
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this->resolve()->fillKeysArray($valueType);
+	}
+
+	public function flipArray(): Type
+	{
+		return $this->resolve()->flipArray();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return $this->resolve()->intersectKeyArray($otherArraysType);
+	}
+
+	public function popArray(): Type
+	{
+		return $this->resolve()->popArray();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this->resolve()->reverseArray($preserveKeys);
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return $this->resolve()->searchArray($needleType);
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this->resolve()->shiftArray();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this->resolve()->shuffleArray();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->resolve()->sliceArray($offsetType, $lengthType, $preserveKeys);
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return $this->resolve()->isCallable();
+	}
+
+	public function getEnumCases(): array
+	{
+		return $this->resolve()->getEnumCases();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return $this->resolve()->getCallableParametersAcceptors($scope);
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return $this->resolve()->isCloneable();
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		return $this->resolve()->toBoolean();
+	}
+
+	public function toNumber(): Type
+	{
+		return $this->resolve()->toNumber();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return $this->resolve()->toAbsoluteNumber();
+	}
+
+	public function toInteger(): Type
+	{
+		return $this->resolve()->toInteger();
+	}
+
+	public function toFloat(): Type
+	{
+		return $this->resolve()->toFloat();
+	}
+
+	public function toString(): Type
+	{
+		return $this->resolve()->toString();
+	}
+
+	public function toArray(): Type
+	{
+		return $this->resolve()->toArray();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this->resolve()->toArrayKey();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this->resolve()->toCoercedArgumentType($strictTypes);
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->resolve()->isSmallerThan($otherType, $phpVersion);
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->resolve()->isSmallerThanOrEqual($otherType, $phpVersion);
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return $this->resolve()->isNull();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return $this->resolve()->isConstantValue();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return $this->resolve()->isConstantScalarValue();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return $this->resolve()->getConstantScalarTypes();
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return $this->resolve()->getConstantScalarValues();
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return $this->resolve()->isTrue();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return $this->resolve()->isFalse();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return $this->resolve()->isBoolean();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return $this->resolve()->isFloat();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return $this->resolve()->isInteger();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return $this->resolve()->isString();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return $this->resolve()->isNumericString();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return $this->resolve()->isNonEmptyString();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return $this->resolve()->isNonFalsyString();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return $this->resolve()->isLiteralString();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return $this->resolve()->isLowercaseString();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return $this->resolve()->isUppercaseString();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return $this->resolve()->isClassString();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return $this->resolve()->getClassStringObjectType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this->resolve()->getObjectTypeOrClassStringObjectType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return $this->resolve()->isVoid();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return $this->resolve()->isScalar();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		return $this->resolve()->getSmallerType($phpVersion);
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->resolve()->getSmallerOrEqualType($phpVersion);
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		return $this->resolve()->getGreaterType($phpVersion);
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->resolve()->getGreaterOrEqualType($phpVersion);
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		return $this->resolve()->inferTemplateTypes($receivedType);
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		return $this->resolve()->tryRemove($typeToRemove);
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		$result = $this->resolve();
+
+		if ($result instanceof CompoundType) {
+			return $result->isSubTypeOf($otherType);
+		}
+
+		return $otherType->isSuperTypeOf($result);
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		$result = $this->resolve();
+
+		if ($result instanceof CompoundType) {
+			return $result->isAcceptedBy($acceptingType, $strictTypes);
+		}
+
+		return $acceptingType->accepts($result, $strictTypes);
+	}
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		$result = $this->resolve();
+
+		if ($result instanceof CompoundType) {
+			return $result->isGreaterThan($otherType, $phpVersion);
+		}
+
+		return $otherType->isSmallerThan($result, $phpVersion);
+	}
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		$result = $this->resolve();
+
+		if ($result instanceof CompoundType) {
+			return $result->isGreaterThanOrEqual($otherType, $phpVersion);
+		}
+
+		return $otherType->isSmallerThanOrEqual($result, $phpVersion);
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return $this->resolve()->exponentiate($exponent);
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return $this->resolve()->getFiniteTypes();
+	}
+
+	public function resolve(): Type
+	{
+		if ($this->result === null) {
+			return $this->result = $this->getResult();
+		}
+
+		return $this->result;
+	}
+
+	abstract protected function getResult(): Type;
+
+}
diff --git a/src/Type/Traits/MaybeArrayTypeTrait.php b/src/Type/Traits/MaybeArrayTypeTrait.php
new file mode 100644
index 00000000..e60ec959
--- /dev/null
+++ b/src/Type/Traits/MaybeArrayTypeTrait.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+trait MaybeArrayTypeTrait
+{
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function flipArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function popArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Traits/MaybeCallableTypeTrait.php b/src/Type/Traits/MaybeCallableTypeTrait.php
new file mode 100644
index 00000000..b0e4a7c7
--- /dev/null
+++ b/src/Type/Traits/MaybeCallableTypeTrait.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\TrivialParametersAcceptor;
+use PHPStan\TrinaryLogic;
+
+trait MaybeCallableTypeTrait
+{
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		return [new TrivialParametersAcceptor()];
+	}
+
+}
diff --git a/src/Type/Traits/MaybeIterableTypeTrait.php b/src/Type/Traits/MaybeIterableTypeTrait.php
new file mode 100644
index 00000000..95f31367
--- /dev/null
+++ b/src/Type/Traits/MaybeIterableTypeTrait.php
@@ -0,0 +1,68 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\IntegerRangeType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+trait MaybeIterableTypeTrait
+{
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getArraySize(): Type
+	{
+		if ($this->isIterable()->no()) {
+			return new ErrorType();
+		}
+
+		if ($this->isIterableAtLeastOnce()->yes()) {
+			return IntegerRangeType::fromInterval(1, null);
+		}
+
+		return IntegerRangeType::fromInterval(0, null);
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new MixedType();
+	}
+
+}
diff --git a/src/Type/Traits/MaybeObjectTypeTrait.php b/src/Type/Traits/MaybeObjectTypeTrait.php
new file mode 100644
index 00000000..6cebecc4
--- /dev/null
+++ b/src/Type/Traits/MaybeObjectTypeTrait.php
@@ -0,0 +1,111 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\Dummy\DummyClassConstantReflection;
+use PHPStan\Reflection\Dummy\DummyMethodReflection;
+use PHPStan\Reflection\Dummy\DummyPropertyReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+trait MaybeObjectTypeTrait
+{
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new MixedType();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$property = new DummyPropertyReflection();
+		return new CallbackUnresolvedPropertyPrototypeReflection(
+			$property,
+			$property->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$method = new DummyMethodReflection($methodName);
+		return new CallbackUnresolvedMethodPrototypeReflection(
+			$method,
+			$method->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return new DummyClassConstantReflection($constantName);
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+}
diff --git a/src/Type/Traits/MaybeOffsetAccessibleTypeTrait.php b/src/Type/Traits/MaybeOffsetAccessibleTypeTrait.php
new file mode 100644
index 00000000..4ae6e292
--- /dev/null
+++ b/src/Type/Traits/MaybeOffsetAccessibleTypeTrait.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+trait MaybeOffsetAccessibleTypeTrait
+{
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new MixedType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this;
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this;
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this;
+	}
+
+}
diff --git a/src/Type/Traits/NonArrayTypeTrait.php b/src/Type/Traits/NonArrayTypeTrait.php
new file mode 100644
index 00000000..3d7bd45b
--- /dev/null
+++ b/src/Type/Traits/NonArrayTypeTrait.php
@@ -0,0 +1,103 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+trait NonArrayTypeTrait
+{
+
+	public function getArrays(): array
+	{
+		return [];
+	}
+
+	public function getConstantArrays(): array
+	{
+		return [];
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getKeysArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getValuesArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function flipArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function popArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function shiftArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function shuffleArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Traits/NonCallableTypeTrait.php b/src/Type/Traits/NonCallableTypeTrait.php
new file mode 100644
index 00000000..e7bcf621
--- /dev/null
+++ b/src/Type/Traits/NonCallableTypeTrait.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+
+trait NonCallableTypeTrait
+{
+
+	public function isCallable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		throw new ShouldNotHappenException();
+	}
+
+}
diff --git a/src/Type/Traits/NonGeneralizableTypeTrait.php b/src/Type/Traits/NonGeneralizableTypeTrait.php
new file mode 100644
index 00000000..7304e832
--- /dev/null
+++ b/src/Type/Traits/NonGeneralizableTypeTrait.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\GeneralizePrecision;
+use PHPStan\Type\Type;
+
+trait NonGeneralizableTypeTrait
+{
+
+	public function generalize(GeneralizePrecision $precision): Type
+	{
+		return $this->traverse(static fn (Type $type) => $type->generalize($precision));
+	}
+
+}
diff --git a/src/Type/Traits/NonGenericTypeTrait.php b/src/Type/Traits/NonGenericTypeTrait.php
new file mode 100644
index 00000000..0281aff8
--- /dev/null
+++ b/src/Type/Traits/NonGenericTypeTrait.php
@@ -0,0 +1,23 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Type;
+
+trait NonGenericTypeTrait
+{
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		return TemplateTypeMap::createEmpty();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return [];
+	}
+
+}
diff --git a/src/Type/Traits/NonIterableTypeTrait.php b/src/Type/Traits/NonIterableTypeTrait.php
new file mode 100644
index 00000000..629e7ddd
--- /dev/null
+++ b/src/Type/Traits/NonIterableTypeTrait.php
@@ -0,0 +1,58 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+trait NonIterableTypeTrait
+{
+
+	public function isIterable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getArraySize(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Traits/NonObjectTypeTrait.php b/src/Type/Traits/NonObjectTypeTrait.php
new file mode 100644
index 00000000..a443da92
--- /dev/null
+++ b/src/Type/Traits/NonObjectTypeTrait.php
@@ -0,0 +1,105 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+trait NonObjectTypeTrait
+{
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		throw new ShouldNotHappenException();
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getEnumCases(): array
+	{
+		return [];
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Traits/NonOffsetAccessibleTypeTrait.php b/src/Type/Traits/NonOffsetAccessibleTypeTrait.php
new file mode 100644
index 00000000..5e5a14d6
--- /dev/null
+++ b/src/Type/Traits/NonOffsetAccessibleTypeTrait.php
@@ -0,0 +1,43 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\Type;
+
+trait NonOffsetAccessibleTypeTrait
+{
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return new ErrorType();
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return new ErrorType();
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return new ErrorType();
+	}
+
+}
diff --git a/src/Type/Traits/NonRemoveableTypeTrait.php b/src/Type/Traits/NonRemoveableTypeTrait.php
new file mode 100644
index 00000000..7aa788f6
--- /dev/null
+++ b/src/Type/Traits/NonRemoveableTypeTrait.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\Type;
+
+trait NonRemoveableTypeTrait
+{
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		return null;
+	}
+
+}
diff --git a/src/Type/Traits/ObjectTypeTrait.php b/src/Type/Traits/ObjectTypeTrait.php
new file mode 100644
index 00000000..ca4e2532
--- /dev/null
+++ b/src/Type/Traits/ObjectTypeTrait.php
@@ -0,0 +1,282 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\Dummy\DummyClassConstantReflection;
+use PHPStan\Reflection\Dummy\DummyMethodReflection;
+use PHPStan\Reflection\Dummy\DummyPropertyReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\CallbackUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\ErrorType;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+
+trait ObjectTypeTrait
+{
+
+	use MaybeCallableTypeTrait;
+	use MaybeIterableTypeTrait;
+	use MaybeOffsetAccessibleTypeTrait;
+	use NonArrayTypeTrait;
+	use TruthyBooleanTypeTrait;
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return new MixedType();
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$property = new DummyPropertyReflection();
+		return new CallbackUnresolvedPropertyPrototypeReflection(
+			$property,
+			$property->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$method = new DummyMethodReflection($methodName);
+		return new CallbackUnresolvedMethodPrototypeReflection(
+			$method,
+			$method->getDeclaringClass(),
+			false,
+			static fn (Type $type): Type => $type,
+		);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return new DummyClassConstantReflection($constantName);
+	}
+
+	public function getConstantStrings(): array
+	{
+		return [];
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this;
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ArrayType(new MixedType(), new MixedType());
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new StringType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this;
+	}
+
+}
diff --git a/src/Type/Traits/TruthyBooleanTypeTrait.php b/src/Type/Traits/TruthyBooleanTypeTrait.php
new file mode 100644
index 00000000..c0ea57ac
--- /dev/null
+++ b/src/Type/Traits/TruthyBooleanTypeTrait.php
@@ -0,0 +1,17 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\BooleanType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+
+trait TruthyBooleanTypeTrait
+{
+
+	public function toBoolean(): BooleanType
+	{
+		return new ConstantBooleanType(true);
+	}
+
+}
diff --git a/src/Type/Traits/UndecidedBooleanTypeTrait.php b/src/Type/Traits/UndecidedBooleanTypeTrait.php
new file mode 100644
index 00000000..ed217818
--- /dev/null
+++ b/src/Type/Traits/UndecidedBooleanTypeTrait.php
@@ -0,0 +1,16 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Type\BooleanType;
+
+trait UndecidedBooleanTypeTrait
+{
+
+	public function toBoolean(): BooleanType
+	{
+		return new BooleanType();
+	}
+
+}
diff --git a/src/Type/Traits/UndecidedComparisonCompoundTypeTrait.php b/src/Type/Traits/UndecidedComparisonCompoundTypeTrait.php
new file mode 100644
index 00000000..69776301
--- /dev/null
+++ b/src/Type/Traits/UndecidedComparisonCompoundTypeTrait.php
@@ -0,0 +1,25 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Type;
+
+trait UndecidedComparisonCompoundTypeTrait
+{
+
+	use UndecidedComparisonTypeTrait;
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+}
diff --git a/src/Type/Traits/UndecidedComparisonTypeTrait.php b/src/Type/Traits/UndecidedComparisonTypeTrait.php
new file mode 100644
index 00000000..25b98d30
--- /dev/null
+++ b/src/Type/Traits/UndecidedComparisonTypeTrait.php
@@ -0,0 +1,44 @@
+<?php 
+
+namespace PHPStan\Type\Traits;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\MixedType;
+use PHPStan\Type\Type;
+
+trait UndecidedComparisonTypeTrait
+{
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return TrinaryLogic::createMaybe();
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		return new MixedType();
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return new MixedType();
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		return new MixedType();
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return new MixedType();
+	}
+
+}
diff --git a/src/Type/Type.php b/src/Type/Type.php
new file mode 100644
index 00000000..ffd0b88a
--- /dev/null
+++ b/src/Type/Type.php
@@ -0,0 +1,359 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Reflection\Callables\CallableParametersAcceptor;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Enum\EnumCaseObjectType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeReference;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+
+/**
+ * @api
+ * @see https://phpstan.org/developing-extensions/type-system
+ */
+interface Type
+{
+
+	/**
+	 * @return list<string>
+	 */
+	public function getReferencedClasses(): array;
+
+	/** @return list<non-empty-string> */
+	public function getObjectClassNames(): array;
+
+	/**
+	 * @return list<ClassReflection>
+	 */
+	public function getObjectClassReflections(): array;
+
+	/**
+	 * Returns object type Foo for class-string<Foo> and 'Foo' (if Foo is a valid class).
+	 */
+	public function getClassStringObjectType(): Type;
+
+	/**
+	 * Returns object type Foo for class-string<Foo>, 'Foo' (if Foo is a valid class),
+	 * and object type Foo.
+	 */
+	public function getObjectTypeOrClassStringObjectType(): Type;
+
+	public function isObject(): TrinaryLogic;
+
+	public function isEnum(): TrinaryLogic;
+
+	/** @return list<ArrayType|ConstantArrayType> */
+	public function getArrays(): array;
+
+	/** @return list<ConstantArrayType> */
+	public function getConstantArrays(): array;
+
+	/** @return list<ConstantStringType> */
+	public function getConstantStrings(): array;
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult;
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult;
+
+	public function equals(Type $type): bool;
+
+	public function describe(VerbosityLevel $level): string;
+
+	public function canAccessProperties(): TrinaryLogic;
+
+	public function hasProperty(string $propertyName): TrinaryLogic;
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection;
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection;
+
+	public function canCallMethods(): TrinaryLogic;
+
+	public function hasMethod(string $methodName): TrinaryLogic;
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection;
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection;
+
+	public function canAccessConstants(): TrinaryLogic;
+
+	public function hasConstant(string $constantName): TrinaryLogic;
+
+	public function getConstant(string $constantName): ClassConstantReflection;
+
+	public function isIterable(): TrinaryLogic;
+
+	public function isIterableAtLeastOnce(): TrinaryLogic;
+
+	public function getArraySize(): Type;
+
+	public function getIterableKeyType(): Type;
+
+	public function getFirstIterableKeyType(): Type;
+
+	public function getLastIterableKeyType(): Type;
+
+	public function getIterableValueType(): Type;
+
+	public function getFirstIterableValueType(): Type;
+
+	public function getLastIterableValueType(): Type;
+
+	public function isArray(): TrinaryLogic;
+
+	public function isConstantArray(): TrinaryLogic;
+
+	public function isOversizedArray(): TrinaryLogic;
+
+	public function isList(): TrinaryLogic;
+
+	public function isOffsetAccessible(): TrinaryLogic;
+
+	public function isOffsetAccessLegal(): TrinaryLogic;
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic;
+
+	public function getOffsetValueType(Type $offsetType): Type;
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type;
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type;
+
+	public function unsetOffset(Type $offsetType): Type;
+
+	public function getKeysArray(): Type;
+
+	public function getValuesArray(): Type;
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type;
+
+	public function fillKeysArray(Type $valueType): Type;
+
+	public function flipArray(): Type;
+
+	public function intersectKeyArray(Type $otherArraysType): Type;
+
+	public function popArray(): Type;
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type;
+
+	public function searchArray(Type $needleType): Type;
+
+	public function shiftArray(): Type;
+
+	public function shuffleArray(): Type;
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type;
+
+	/**
+	 * @return list<EnumCaseObjectType>
+	 */
+	public function getEnumCases(): array;
+
+	/**
+	 * Returns a list of finite values.
+	 *
+	 * Examples:
+	 *
+	 * - for bool: [true, false]
+	 * - for int<0, 3>: [0, 1, 2, 3]
+	 * - for enums: list of enum cases
+	 * - for scalars: the scalar itself
+	 *
+	 * For infinite types it returns an empty array.
+	 *
+	 * @return list<Type>
+	 */
+	public function getFiniteTypes(): array;
+
+	public function exponentiate(Type $exponent): Type;
+
+	public function isCallable(): TrinaryLogic;
+
+	/**
+	 * @return CallableParametersAcceptor[]
+	 */
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array;
+
+	public function isCloneable(): TrinaryLogic;
+
+	public function toBoolean(): BooleanType;
+
+	public function toNumber(): Type;
+
+	public function toInteger(): Type;
+
+	public function toFloat(): Type;
+
+	public function toString(): Type;
+
+	public function toArray(): Type;
+
+	public function toArrayKey(): Type;
+
+	/**
+	 * Tells how a type might change when passed to an argument
+	 * or assigned to a typed property.
+	 *
+	 * Example: int is accepted by int|float with strict_types = 1
+	 * Stringable is accepted by string|Stringable even without strict_types.
+	 *
+	 * Note: Logic with $strictTypes=false is mostly not implemented in Type subclasses.
+	 */
+	public function toCoercedArgumentType(bool $strictTypes): self;
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic;
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic;
+
+	/**
+	 * Is Type of a known constant value? Includes literal strings, integers, floats, true, false, null, and array shapes.
+	 */
+	public function isConstantValue(): TrinaryLogic;
+
+	/**
+	 * Is Type of a known constant scalar value? Includes literal strings, integers, floats, true, false, and null.
+	 */
+	public function isConstantScalarValue(): TrinaryLogic;
+
+	/**
+	 * @return list<ConstantScalarType>
+	 */
+	public function getConstantScalarTypes(): array;
+
+	/**
+	 * @return list<int|float|string|bool|null>
+	 */
+	public function getConstantScalarValues(): array;
+
+	public function isNull(): TrinaryLogic;
+
+	public function isTrue(): TrinaryLogic;
+
+	public function isFalse(): TrinaryLogic;
+
+	public function isBoolean(): TrinaryLogic;
+
+	public function isFloat(): TrinaryLogic;
+
+	public function isInteger(): TrinaryLogic;
+
+	public function isString(): TrinaryLogic;
+
+	public function isNumericString(): TrinaryLogic;
+
+	public function isNonEmptyString(): TrinaryLogic;
+
+	public function isNonFalsyString(): TrinaryLogic;
+
+	public function isLiteralString(): TrinaryLogic;
+
+	public function isLowercaseString(): TrinaryLogic;
+
+	public function isUppercaseString(): TrinaryLogic;
+
+	public function isClassString(): TrinaryLogic;
+
+	public function isVoid(): TrinaryLogic;
+
+	public function isScalar(): TrinaryLogic;
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType;
+
+	public function getSmallerType(PhpVersion $phpVersion): Type;
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type;
+
+	public function getGreaterType(PhpVersion $phpVersion): Type;
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type;
+
+	/**
+	 * Returns actual template type for a given object.
+	 *
+	 * Example:
+	 *
+	 * @-template T
+	 * class Foo {}
+	 *
+	 * // $fooType is Foo<int>
+	 * $t = $fooType->getTemplateType(Foo::class, 'T');
+	 * $t->isInteger(); // yes
+	 *
+	 * Returns ErrorType in case of a missing type.
+	 *
+	 * @param class-string $ancestorClassName
+	 */
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type;
+
+	/**
+	 * Infers template types
+	 *
+	 * Infers the real Type of the TemplateTypes found in $this, based on
+	 * the received Type.
+	 */
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap;
+
+	/**
+	 * Returns the template types referenced by this Type, recursively
+	 *
+	 * The return value is a list of TemplateTypeReferences, who contain the
+	 * referenced template type as well as the variance position in which it was
+	 * found.
+	 *
+	 * For example, calling this on array<Foo<T>,Bar> (with T a template type)
+	 * will return one TemplateTypeReference for the type T.
+	 *
+	 * @param TemplateTypeVariance $positionVariance The variance position in
+	 *                                               which the receiver type was
+	 *                                               found.
+	 *
+	 * @return list<TemplateTypeReference>
+	 */
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array;
+
+	public function toAbsoluteNumber(): Type;
+
+	/**
+	 * Traverses inner types
+	 *
+	 * Returns a new instance with all inner types mapped through $cb. Might
+	 * return the same instance if inner types did not change.
+	 *
+	 * @param callable(Type):Type $cb
+	 */
+	public function traverse(callable $cb): Type;
+
+	/**
+	 * Traverses inner types while keeping the same context in another type.
+	 *
+	 * @param callable(Type $left, Type $right): Type $cb
+	 */
+	public function traverseSimultaneously(Type $right, callable $cb): Type;
+
+	public function toPhpDocNode(): TypeNode;
+
+	/**
+	 * Return the difference with another type, or null if it cannot be represented.
+	 *
+	 * @see TypeCombinator::remove()
+	 */
+	public function tryRemove(Type $typeToRemove): ?Type;
+
+	public function generalize(GeneralizePrecision $precision): Type;
+
+}
diff --git a/src/Type/TypeAlias.php b/src/Type/TypeAlias.php
new file mode 100644
index 00000000..99248001
--- /dev/null
+++ b/src/Type/TypeAlias.php
@@ -0,0 +1,42 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\TypeNodeResolver;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+
+final class TypeAlias
+{
+
+	private ?Type $resolvedType = null;
+
+	public function __construct(
+		private TypeNode $typeNode,
+		private NameScope $nameScope,
+	)
+	{
+	}
+
+	public static function invalid(): self
+	{
+		$self = new self(new IdentifierTypeNode('*ERROR*'), new NameScope(null, []));
+		$self->resolvedType = new CircularTypeAliasErrorType();
+		return $self;
+	}
+
+	public function resolve(TypeNodeResolver $typeNodeResolver): Type
+	{
+		if ($this->resolvedType === null) {
+			$this->resolvedType = $typeNodeResolver->resolve(
+				$this->typeNode,
+				$this->nameScope,
+			);
+		}
+
+		return $this->resolvedType;
+	}
+
+}
diff --git a/src/Type/TypeAliasResolver.php b/src/Type/TypeAliasResolver.php
new file mode 100644
index 00000000..03774266
--- /dev/null
+++ b/src/Type/TypeAliasResolver.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Analyser\NameScope;
+
+interface TypeAliasResolver
+{
+
+	public function hasTypeAlias(string $aliasName, ?string $classNameScope): bool;
+
+	public function resolveTypeAlias(string $aliasName, NameScope $nameScope): ?Type;
+
+}
diff --git a/src/Type/TypeAliasResolverProvider.php b/src/Type/TypeAliasResolverProvider.php
new file mode 100644
index 00000000..31da5de6
--- /dev/null
+++ b/src/Type/TypeAliasResolverProvider.php
@@ -0,0 +1,11 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+interface TypeAliasResolverProvider
+{
+
+	public function getTypeAliasResolver(): TypeAliasResolver;
+
+}
diff --git a/src/Type/TypeCombinator.php b/src/Type/TypeCombinator.php
new file mode 100644
index 00000000..1973e333
--- /dev/null
+++ b/src/Type/TypeCombinator.php
@@ -0,0 +1,1399 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\HasOffsetType;
+use PHPStan\Type\Accessory\HasOffsetValueType;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Accessory\OversizedArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateArrayType;
+use PHPStan\Type\Generic\TemplateBenevolentUnionType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeFactory;
+use PHPStan\Type\Generic\TemplateUnionType;
+use function array_key_exists;
+use function array_key_first;
+use function array_map;
+use function array_merge;
+use function array_slice;
+use function array_splice;
+use function array_values;
+use function count;
+use function get_class;
+use function is_int;
+use function md5;
+use function sprintf;
+use function usort;
+
+/**
+ * @api
+ */
+final class TypeCombinator
+{
+
+	public static function addNull(Type $type): Type
+	{
+		$nullType = new NullType();
+
+		if ($nullType->isSuperTypeOf($type)->no()) {
+			return self::union($type, $nullType);
+		}
+
+		return $type;
+	}
+
+	public static function remove(Type $fromType, Type $typeToRemove): Type
+	{
+		if ($typeToRemove instanceof UnionType) {
+			foreach ($typeToRemove->getTypes() as $unionTypeToRemove) {
+				$fromType = self::remove($fromType, $unionTypeToRemove);
+			}
+			return $fromType;
+		}
+
+		$isSuperType = $typeToRemove->isSuperTypeOf($fromType);
+		if ($isSuperType->yes()) {
+			return new NeverType();
+		}
+		if ($isSuperType->no()) {
+			return $fromType;
+		}
+
+		if ($typeToRemove instanceof MixedType) {
+			$typeToRemoveSubtractedType = $typeToRemove->getSubtractedType();
+			if ($typeToRemoveSubtractedType !== null) {
+				return self::intersect($fromType, $typeToRemoveSubtractedType);
+			}
+		}
+
+		$removed = $fromType->tryRemove($typeToRemove);
+		if ($removed !== null) {
+			return $removed;
+		}
+
+		$fromFiniteTypes = $fromType->getFiniteTypes();
+		if (count($fromFiniteTypes) > 0) {
+			$finiteTypesToRemove = $typeToRemove->getFiniteTypes();
+			if (count($finiteTypesToRemove) === 1) {
+				$result = [];
+				foreach ($fromFiniteTypes as $finiteType) {
+					if ($finiteType->equals($finiteTypesToRemove[0])) {
+						continue;
+					}
+
+					$result[] = $finiteType;
+				}
+
+				if (count($result) === count($fromFiniteTypes)) {
+					return $fromType;
+				}
+
+				if (count($result) === 0) {
+					return new NeverType();
+				}
+
+				if (count($result) === 1) {
+					return $result[0];
+				}
+
+				return new UnionType($result);
+			}
+		}
+
+		return $fromType;
+	}
+
+	public static function removeNull(Type $type): Type
+	{
+		if (self::containsNull($type)) {
+			return self::remove($type, new NullType());
+		}
+
+		return $type;
+	}
+
+	public static function containsNull(Type $type): bool
+	{
+		if ($type instanceof UnionType) {
+			foreach ($type->getTypes() as $innerType) {
+				if ($innerType instanceof NullType) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+
+		return $type instanceof NullType;
+	}
+
+	public static function union(Type ...$types): Type
+	{
+		$typesCount = count($types);
+		if ($typesCount === 0) {
+			return new NeverType();
+		}
+
+		$benevolentTypes = [];
+		$benevolentUnionObject = null;
+		// transform A | (B | C) to A | B | C
+		for ($i = 0; $i < $typesCount; $i++) {
+			if ($types[$i] instanceof BenevolentUnionType) {
+				if ($types[$i] instanceof TemplateBenevolentUnionType && $benevolentUnionObject === null) {
+					$benevolentUnionObject = $types[$i];
+				}
+				$benevolentTypesCount = 0;
+				$typesInner = $types[$i]->getTypes();
+				foreach ($typesInner as $benevolentInnerType) {
+					$benevolentTypesCount++;
+					$benevolentTypes[$benevolentInnerType->describe(VerbosityLevel::value())] = $benevolentInnerType;
+				}
+				array_splice($types, $i, 1, $typesInner);
+				$typesCount += $benevolentTypesCount - 1;
+				continue;
+			}
+			if (!($types[$i] instanceof UnionType)) {
+				continue;
+			}
+			if ($types[$i] instanceof TemplateType) {
+				continue;
+			}
+
+			$typesInner = $types[$i]->getTypes();
+			array_splice($types, $i, 1, $typesInner);
+			$typesCount += count($typesInner) - 1;
+		}
+
+		if ($typesCount === 1) {
+			return $types[0];
+		}
+
+		$arrayTypes = [];
+		$scalarTypes = [];
+		$hasGenericScalarTypes = [];
+		$enumCaseTypes = [];
+		for ($i = 0; $i < $typesCount; $i++) {
+			if ($types[$i] instanceof ConstantScalarType) {
+				$type = $types[$i];
+				$scalarTypes[get_class($type)][md5($type->describe(VerbosityLevel::cache()))] = $type;
+				unset($types[$i]);
+				continue;
+			}
+			if ($types[$i] instanceof BooleanType) {
+				$hasGenericScalarTypes[ConstantBooleanType::class] = true;
+			}
+			if ($types[$i] instanceof FloatType) {
+				$hasGenericScalarTypes[ConstantFloatType::class] = true;
+			}
+			if ($types[$i] instanceof IntegerType && !$types[$i] instanceof IntegerRangeType) {
+				$hasGenericScalarTypes[ConstantIntegerType::class] = true;
+			}
+			if ($types[$i] instanceof StringType && !$types[$i] instanceof ClassStringType) {
+				$hasGenericScalarTypes[ConstantStringType::class] = true;
+			}
+			$enumCases = $types[$i]->getEnumCases();
+			if (count($enumCases) === 1) {
+				$enumCaseTypes[$types[$i]->describe(VerbosityLevel::cache())] = $types[$i];
+
+				unset($types[$i]);
+				continue;
+			}
+
+			if (!$types[$i]->isArray()->yes()) {
+				continue;
+			}
+
+			$arrayTypes[] = $types[$i];
+			unset($types[$i]);
+		}
+
+		foreach ($scalarTypes as $classType => $scalarTypeItems) {
+			$scalarTypes[$classType] = array_values($scalarTypeItems);
+		}
+
+		$enumCaseTypes = array_values($enumCaseTypes);
+		$types = array_values($types);
+		$typesCount = count($types);
+
+		foreach ($scalarTypes as $classType => $scalarTypeItems) {
+			if (isset($hasGenericScalarTypes[$classType])) {
+				unset($scalarTypes[$classType]);
+				continue;
+			}
+			if ($classType === ConstantBooleanType::class && count($scalarTypeItems) === 2) {
+				$types[] = new BooleanType();
+				$typesCount++;
+				unset($scalarTypes[$classType]);
+				continue;
+			}
+
+			$scalarTypeItemsCount = count($scalarTypeItems);
+			for ($i = 0; $i < $typesCount; $i++) {
+				for ($j = 0; $j < $scalarTypeItemsCount; $j++) {
+					$compareResult = self::compareTypesInUnion($types[$i], $scalarTypeItems[$j]);
+					if ($compareResult === null) {
+						continue;
+					}
+
+					[$a, $b] = $compareResult;
+					if ($a !== null) {
+						$types[$i] = $a;
+						array_splice($scalarTypeItems, $j--, 1);
+						$scalarTypeItemsCount--;
+						continue 1;
+					}
+					if ($b !== null) {
+						$scalarTypeItems[$j] = $b;
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+				}
+			}
+
+			$scalarTypes[$classType] = $scalarTypeItems;
+		}
+
+		if (count($types) > 16) {
+			$newTypes = [];
+			foreach ($types as $type) {
+				$newTypes[$type->describe(VerbosityLevel::cache())] = $type;
+			}
+			$types = array_values($newTypes);
+		}
+
+		$types = array_merge(
+			$types,
+			self::processArrayTypes($arrayTypes),
+		);
+		$typesCount = count($types);
+
+		// transform A | A to A
+		// transform A | never to A
+		for ($i = 0; $i < $typesCount; $i++) {
+			for ($j = $i + 1; $j < $typesCount; $j++) {
+				$compareResult = self::compareTypesInUnion($types[$i], $types[$j]);
+				if ($compareResult === null) {
+					continue;
+				}
+
+				[$a, $b] = $compareResult;
+				if ($a !== null) {
+					$types[$i] = $a;
+					array_splice($types, $j--, 1);
+					$typesCount--;
+					continue 1;
+				}
+				if ($b !== null) {
+					$types[$j] = $b;
+					array_splice($types, $i--, 1);
+					$typesCount--;
+					continue 2;
+				}
+			}
+		}
+
+		$enumCasesCount = count($enumCaseTypes);
+		for ($i = 0; $i < $typesCount; $i++) {
+			for ($j = 0; $j < $enumCasesCount; $j++) {
+				$compareResult = self::compareTypesInUnion($types[$i], $enumCaseTypes[$j]);
+				if ($compareResult === null) {
+					continue;
+				}
+
+				[$a, $b] = $compareResult;
+				if ($a !== null) {
+					$types[$i] = $a;
+					array_splice($enumCaseTypes, $j--, 1);
+					$enumCasesCount--;
+					continue 1;
+				}
+				if ($b !== null) {
+					$enumCaseTypes[$j] = $b;
+					array_splice($types, $i--, 1);
+					$typesCount--;
+					continue 2;
+				}
+			}
+		}
+
+		foreach ($enumCaseTypes as $enumCaseType) {
+			$types[] = $enumCaseType;
+			$typesCount++;
+		}
+
+		foreach ($scalarTypes as $scalarTypeItems) {
+			foreach ($scalarTypeItems as $scalarType) {
+				$types[] = $scalarType;
+				$typesCount++;
+			}
+		}
+
+		if ($typesCount === 0) {
+			return new NeverType();
+		}
+		if ($typesCount === 1) {
+			return $types[0];
+		}
+
+		if ($benevolentTypes !== []) {
+			$tempTypes = $types;
+			foreach ($tempTypes as $i => $type) {
+				if (!isset($benevolentTypes[$type->describe(VerbosityLevel::value())])) {
+					break;
+				}
+
+				unset($tempTypes[$i]);
+			}
+
+			if ($tempTypes === []) {
+				if ($benevolentUnionObject instanceof TemplateBenevolentUnionType) {
+					return $benevolentUnionObject->withTypes($types);
+				}
+
+				return new BenevolentUnionType($types, true);
+			}
+		}
+
+		return new UnionType($types, true);
+	}
+
+	/**
+	 * @return array{Type, null}|array{null, Type}|null
+	 */
+	private static function compareTypesInUnion(Type $a, Type $b): ?array
+	{
+		if ($a instanceof IntegerRangeType) {
+			$type = $a->tryUnion($b);
+			if ($type !== null) {
+				$a = $type;
+				return [$a, null];
+			}
+		}
+		if ($b instanceof IntegerRangeType) {
+			$type = $b->tryUnion($a);
+			if ($type !== null) {
+				$b = $type;
+				return [null, $b];
+			}
+		}
+		if ($a instanceof IntegerRangeType && $b instanceof IntegerRangeType) {
+			return null;
+		}
+		if ($a instanceof HasOffsetValueType && $b instanceof HasOffsetValueType) {
+			if ($a->getOffsetType()->equals($b->getOffsetType())) {
+				return [new HasOffsetValueType($a->getOffsetType(), self::union($a->getValueType(), $b->getValueType())), null];
+			}
+		}
+		if ($a->isConstantArray()->yes() && $b->isConstantArray()->yes()) {
+			return null;
+		}
+
+		// simplify string[] | int[] to (string|int)[]
+		if ($a instanceof IterableType && $b instanceof IterableType) {
+			return [
+				new IterableType(
+					self::union($a->getIterableKeyType(), $b->getIterableKeyType()),
+					self::union($a->getIterableValueType(), $b->getIterableValueType()),
+				),
+				null,
+			];
+		}
+
+		if ($a instanceof SubtractableType) {
+			$typeWithoutSubtractedTypeA = $a->getTypeWithoutSubtractedType();
+			if ($typeWithoutSubtractedTypeA instanceof MixedType && $b instanceof MixedType) {
+				$isSuperType = $typeWithoutSubtractedTypeA->isSuperTypeOfMixed($b);
+			} else {
+				$isSuperType = $typeWithoutSubtractedTypeA->isSuperTypeOf($b);
+			}
+			if ($isSuperType->yes()) {
+				$a = self::intersectWithSubtractedType($a, $b);
+				return [$a, null];
+			}
+		}
+
+		if ($b instanceof SubtractableType) {
+			$typeWithoutSubtractedTypeB = $b->getTypeWithoutSubtractedType();
+			if ($typeWithoutSubtractedTypeB instanceof MixedType && $a instanceof MixedType) {
+				$isSuperType = $typeWithoutSubtractedTypeB->isSuperTypeOfMixed($a);
+			} else {
+				$isSuperType = $typeWithoutSubtractedTypeB->isSuperTypeOf($a);
+			}
+			if ($isSuperType->yes()) {
+				$b = self::intersectWithSubtractedType($b, $a);
+				return [null, $b];
+			}
+		}
+
+		if ($b->isSuperTypeOf($a)->yes()) {
+			return [null, $b];
+		}
+
+		if ($a->isSuperTypeOf($b)->yes()) {
+			return [$a, null];
+		}
+
+		if (
+			$a instanceof ConstantStringType
+			&& $a->getValue() === ''
+			&& ($b->describe(VerbosityLevel::value()) === 'non-empty-string'
+			|| $b->describe(VerbosityLevel::value()) === 'non-falsy-string')
+		) {
+			return [null, self::intersect(
+				new StringType(),
+				...self::getAccessoryCaseStringTypes($b),
+			)];
+		}
+
+		if (
+			$b instanceof ConstantStringType
+			&& $b->getValue() === ''
+			&& ($a->describe(VerbosityLevel::value()) === 'non-empty-string'
+				|| $a->describe(VerbosityLevel::value()) === 'non-falsy-string')
+		) {
+			return [self::intersect(
+				new StringType(),
+				...self::getAccessoryCaseStringTypes($a),
+			), null];
+		}
+
+		if (
+			$a instanceof ConstantStringType
+			&& $a->getValue() === '0'
+			&& $b->describe(VerbosityLevel::value()) === 'non-falsy-string'
+		) {
+			return [null, self::intersect(
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+				...self::getAccessoryCaseStringTypes($b),
+			)];
+		}
+
+		if (
+			$b instanceof ConstantStringType
+			&& $b->getValue() === '0'
+			&& $a->describe(VerbosityLevel::value()) === 'non-falsy-string'
+		) {
+			return [self::intersect(
+				new StringType(),
+				new AccessoryNonEmptyStringType(),
+				...self::getAccessoryCaseStringTypes($a),
+			), null];
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return array<Type>
+	 */
+	private static function getAccessoryCaseStringTypes(Type $type): array
+	{
+		$accessory = [];
+		if ($type->isLowercaseString()->yes()) {
+			$accessory[] = new AccessoryLowercaseStringType();
+		}
+		if ($type->isUppercaseString()->yes()) {
+			$accessory[] = new AccessoryUppercaseStringType();
+		}
+
+		return $accessory;
+	}
+
+	private static function unionWithSubtractedType(
+		Type $type,
+		?Type $subtractedType,
+	): Type
+	{
+		if ($subtractedType === null) {
+			return $type;
+		}
+
+		if ($type instanceof SubtractableType) {
+			$subtractedType = $type->getSubtractedType() === null
+				? $subtractedType
+				: self::union($type->getSubtractedType(), $subtractedType);
+			if ($subtractedType instanceof NeverType) {
+				$subtractedType = null;
+			}
+
+			return $type->changeSubtractedType($subtractedType);
+		}
+
+		if ($subtractedType->isSuperTypeOf($type)->yes()) {
+			return new NeverType();
+		}
+
+		return self::remove($type, $subtractedType);
+	}
+
+	private static function intersectWithSubtractedType(
+		SubtractableType $a,
+		Type $b,
+	): Type
+	{
+		if ($a->getSubtractedType() === null) {
+			return $a;
+		}
+
+		if ($b instanceof IntersectionType) {
+			$subtractableTypes = [];
+			foreach ($b->getTypes() as $innerType) {
+				if (!$innerType instanceof SubtractableType) {
+					continue;
+				}
+
+				$subtractableTypes[] = $innerType;
+			}
+
+			if (count($subtractableTypes) === 0) {
+				return $a->getTypeWithoutSubtractedType();
+			}
+
+			$subtractedTypes = [];
+			foreach ($subtractableTypes as $subtractableType) {
+				if ($subtractableType->getSubtractedType() === null) {
+					continue;
+				}
+
+				$subtractedTypes[] = $subtractableType->getSubtractedType();
+			}
+
+			if (count($subtractedTypes) === 0) {
+				return $a->getTypeWithoutSubtractedType();
+
+			}
+
+			$subtractedType = self::union(...$subtractedTypes);
+		} elseif ($b instanceof SubtractableType) {
+			$subtractedType = $b->getSubtractedType();
+			if ($subtractedType === null) {
+				return $a->getTypeWithoutSubtractedType();
+			}
+		} else {
+			$subtractedTypeTmp = self::intersect($a->getTypeWithoutSubtractedType(), $a->getSubtractedType());
+			if ($b->isSuperTypeOf($subtractedTypeTmp)->yes()) {
+				return $a->getTypeWithoutSubtractedType();
+			}
+			$subtractedType = new MixedType(false, $b);
+		}
+
+		$subtractedType = self::intersect(
+			$a->getSubtractedType(),
+			$subtractedType,
+		);
+		if ($subtractedType instanceof NeverType) {
+			$subtractedType = null;
+		}
+
+		return $a->changeSubtractedType($subtractedType);
+	}
+
+	/**
+	 * @param Type[] $arrayTypes
+	 * @return Type[]
+	 */
+	private static function processArrayAccessoryTypes(array $arrayTypes): array
+	{
+		$accessoryTypes = [];
+		foreach ($arrayTypes as $i => $arrayType) {
+			if ($arrayType instanceof IntersectionType) {
+				foreach ($arrayType->getTypes() as $innerType) {
+					if ($innerType instanceof TemplateType) {
+						break;
+					}
+					if (!($innerType instanceof AccessoryType) && !($innerType instanceof CallableType)) {
+						continue;
+					}
+					if ($innerType instanceof HasOffsetType) {
+						$offset = $innerType->getOffsetType();
+						if ($offset instanceof ConstantStringType || $offset instanceof ConstantIntegerType) {
+							$innerType = new HasOffsetValueType($offset, $arrayType->getIterableValueType());
+						}
+					}
+					if ($innerType instanceof HasOffsetValueType) {
+						$accessoryTypes[sprintf('hasOffsetValue(%s)', $innerType->getOffsetType()->describe(VerbosityLevel::cache()))][$i] = $innerType;
+						continue;
+					}
+
+					$accessoryTypes[$innerType->describe(VerbosityLevel::cache())][$i] = $innerType;
+				}
+			}
+
+			if (!$arrayType->isConstantArray()->yes()) {
+				continue;
+			}
+			$constantArrays = $arrayType->getConstantArrays();
+
+			foreach ($constantArrays as $constantArray) {
+				if ($constantArray->isList()->yes()) {
+					$list = new AccessoryArrayListType();
+					$accessoryTypes[$list->describe(VerbosityLevel::cache())][$i] = $list;
+				}
+
+				if (!$constantArray->isIterableAtLeastOnce()->yes()) {
+					continue;
+				}
+
+				$nonEmpty = new NonEmptyArrayType();
+				$accessoryTypes[$nonEmpty->describe(VerbosityLevel::cache())][$i] = $nonEmpty;
+			}
+		}
+
+		$commonAccessoryTypes = [];
+		$arrayTypeCount = count($arrayTypes);
+		foreach ($accessoryTypes as $accessoryType) {
+			if (count($accessoryType) !== $arrayTypeCount) {
+				$firstKey = array_key_first($accessoryType);
+				if ($accessoryType[$firstKey] instanceof OversizedArrayType) {
+					$commonAccessoryTypes[] = $accessoryType[$firstKey];
+				}
+				continue;
+			}
+
+			if ($accessoryType[0] instanceof HasOffsetValueType) {
+				$commonAccessoryTypes[] = self::union(...$accessoryType);
+				continue;
+			}
+
+			$commonAccessoryTypes[] = $accessoryType[0];
+		}
+
+		return $commonAccessoryTypes;
+	}
+
+	/**
+	 * @param list<Type> $arrayTypes
+	 * @return Type[]
+	 */
+	private static function processArrayTypes(array $arrayTypes): array
+	{
+		if ($arrayTypes === []) {
+			return [];
+		}
+
+		$accessoryTypes = self::processArrayAccessoryTypes($arrayTypes);
+
+		if (count($arrayTypes) === 1) {
+			return [
+				self::intersect(...$arrayTypes, ...$accessoryTypes),
+			];
+		}
+
+		$keyTypesForGeneralArray = [];
+		$valueTypesForGeneralArray = [];
+		$generalArrayOccurred = false;
+		$constantKeyTypesNumbered = [];
+		$filledArrays = 0;
+		$overflowed = false;
+
+		/** @var int|float $nextConstantKeyTypeIndex */
+		$nextConstantKeyTypeIndex = 1;
+		$constantArraysMap = array_map(
+			static fn (Type $t) => $t->getConstantArrays(),
+			$arrayTypes,
+		);
+
+		foreach ($arrayTypes as $arrayIdx => $arrayType) {
+			$constantArrays = $constantArraysMap[$arrayIdx];
+			$isConstantArray = $constantArrays !== [];
+			if (!$isConstantArray || !$arrayType->isIterableAtLeastOnce()->no()) {
+				$filledArrays++;
+			}
+
+			if ($generalArrayOccurred || !$isConstantArray) {
+				foreach ($arrayType->getArrays() as $type) {
+					$keyTypesForGeneralArray[] = $type->getIterableKeyType();
+					$valueTypesForGeneralArray[] = $type->getItemType();
+					$generalArrayOccurred = true;
+				}
+				continue;
+			}
+
+			$constantArrays = $arrayType->getConstantArrays();
+			foreach ($constantArrays as $constantArray) {
+				foreach ($constantArray->getKeyTypes() as $i => $keyType) {
+					$keyTypesForGeneralArray[] = $keyType;
+					$valueTypesForGeneralArray[] = $constantArray->getValueTypes()[$i];
+
+					$keyTypeValue = $keyType->getValue();
+					if (array_key_exists($keyTypeValue, $constantKeyTypesNumbered)) {
+						continue;
+					}
+
+					$constantKeyTypesNumbered[$keyTypeValue] = $nextConstantKeyTypeIndex;
+					$nextConstantKeyTypeIndex *= 2;
+					if (!is_int($nextConstantKeyTypeIndex)) {
+						$generalArrayOccurred = true;
+						$overflowed = true;
+						continue 2;
+					}
+				}
+			}
+		}
+
+		if ($generalArrayOccurred && (!$overflowed || $filledArrays > 1)) {
+			$reducedArrayTypes = self::reduceArrays($arrayTypes, false);
+			if (count($reducedArrayTypes) === 1) {
+				return [self::intersect($reducedArrayTypes[0], ...$accessoryTypes)];
+			}
+			$scopes = [];
+			$useTemplateArray = true;
+			foreach ($arrayTypes as $arrayType) {
+				if (!$arrayType instanceof TemplateArrayType) {
+					$useTemplateArray = false;
+					break;
+				}
+
+				$scopes[$arrayType->getScope()->describe()] = $arrayType;
+			}
+
+			$arrayType = new ArrayType(
+				self::union(...$keyTypesForGeneralArray),
+				self::union(...self::optimizeConstantArrays($valueTypesForGeneralArray)),
+			);
+
+			if ($useTemplateArray && count($scopes) === 1) {
+				$templateArray = array_values($scopes)[0];
+				$arrayType = new TemplateArrayType(
+					$templateArray->getScope(),
+					$templateArray->getStrategy(),
+					$templateArray->getVariance(),
+					$templateArray->getName(),
+					$arrayType,
+					$templateArray->getDefault(),
+				);
+			}
+
+			return [
+				self::intersect($arrayType, ...$accessoryTypes),
+			];
+		}
+
+		$reducedArrayTypes = self::reduceArrays($arrayTypes, true);
+
+		return array_map(
+			static fn (Type $arrayType) => self::intersect($arrayType, ...$accessoryTypes),
+			self::optimizeConstantArrays($reducedArrayTypes),
+		);
+	}
+
+	/**
+	 * @param Type[] $types
+	 * @return Type[]
+	 */
+	private static function optimizeConstantArrays(array $types): array
+	{
+		$constantArrayValuesCount = self::countConstantArrayValueTypes($types);
+
+		if ($constantArrayValuesCount <= ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+			return $types;
+		}
+
+		$results = [];
+		$eachIsOversized = true;
+		foreach ($types as $type) {
+			$isOversized = false;
+			$result = TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$isOversized): Type {
+				if (!$type instanceof ConstantArrayType) {
+					return $traverse($type);
+				}
+
+				if ($type->isIterableAtLeastOnce()->no()) {
+					return $type;
+				}
+
+				$isOversized = true;
+
+				$isList = true;
+				$valueTypes = [];
+				$keyTypes = [];
+				$nextAutoIndex = 0;
+				foreach ($type->getKeyTypes() as $i => $innerKeyType) {
+					if (!$innerKeyType instanceof ConstantIntegerType) {
+						$isList = false;
+					} elseif ($innerKeyType->getValue() !== $nextAutoIndex) {
+						$isList = false;
+						$nextAutoIndex = $innerKeyType->getValue() + 1;
+					} else {
+						$nextAutoIndex++;
+					}
+
+					$generalizedKeyType = $innerKeyType->generalize(GeneralizePrecision::moreSpecific());
+					$keyTypes[$generalizedKeyType->describe(VerbosityLevel::precise())] = $generalizedKeyType;
+
+					$innerValueType = $type->getValueTypes()[$i];
+					$generalizedValueType = TypeTraverser::map($innerValueType, static function (Type $type) use ($traverse): Type {
+						if ($type instanceof ArrayType || $type instanceof ConstantArrayType) {
+							return TypeCombinator::intersect($type, new OversizedArrayType());
+						}
+
+						return $traverse($type);
+					});
+					$valueTypes[$generalizedValueType->describe(VerbosityLevel::precise())] = $generalizedValueType;
+				}
+
+				$keyType = TypeCombinator::union(...array_values($keyTypes));
+				$valueType = TypeCombinator::union(...array_values($valueTypes));
+
+				$arrayType = new ArrayType($keyType, $valueType);
+				if ($isList) {
+					$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
+				}
+
+				return TypeCombinator::intersect($arrayType, new NonEmptyArrayType(), new OversizedArrayType());
+			});
+
+			if (!$isOversized) {
+				$eachIsOversized = false;
+			}
+
+			$results[] = $result;
+		}
+
+		if ($eachIsOversized) {
+			$eachIsList = true;
+			$keyTypes = [];
+			$valueTypes = [];
+			foreach ($results as $result) {
+				$keyTypes[] = $result->getIterableKeyType();
+				$valueTypes[] = $result->getLastIterableValueType();
+				if ($result->isList()->yes()) {
+					continue;
+				}
+				$eachIsList = false;
+			}
+
+			$keyType = self::union(...$keyTypes);
+			$valueType = self::union(...$valueTypes);
+
+			$arrayType = new ArrayType($keyType, $valueType);
+			if ($eachIsList) {
+				$arrayType = self::intersect($arrayType, new AccessoryArrayListType());
+			}
+
+			return [self::intersect($arrayType, new NonEmptyArrayType(), new OversizedArrayType())];
+		}
+
+		return $results;
+	}
+
+	/**
+	 * @param Type[] $types
+	 */
+	public static function countConstantArrayValueTypes(array $types): int
+	{
+		$constantArrayValuesCount = 0;
+		foreach ($types as $type) {
+			TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$constantArrayValuesCount): Type {
+				if ($type instanceof ConstantArrayType) {
+					$constantArrayValuesCount += count($type->getValueTypes());
+				}
+
+				return $traverse($type);
+			});
+		}
+		return $constantArrayValuesCount;
+	}
+
+	/**
+	 * @param list<Type> $constantArrays
+	 * @return list<Type>
+	 */
+	private static function reduceArrays(array $constantArrays, bool $preserveTaggedUnions): array
+	{
+		$newArrays = [];
+		$arraysToProcess = [];
+		$emptyArray = null;
+		foreach ($constantArrays as $constantArray) {
+			if (!$constantArray->isConstantArray()->yes()) {
+				// This is an optimization for current use-case of $preserveTaggedUnions=false, where we need
+				// one constant array as a result, or we generalize the $constantArrays.
+				if (!$preserveTaggedUnions) {
+					return $constantArrays;
+				}
+				$newArrays[] = $constantArray;
+				continue;
+			}
+
+			if ($constantArray->isIterableAtLeastOnce()->no()) {
+				$emptyArray = $constantArray;
+				continue;
+			}
+
+			$arraysToProcess = array_merge($arraysToProcess, $constantArray->getConstantArrays());
+		}
+
+		if ($emptyArray !== null) {
+			$newArrays[] = $emptyArray;
+		}
+
+		$arraysToProcessPerKey = [];
+		foreach ($arraysToProcess as $i => $arrayToProcess) {
+			foreach ($arrayToProcess->getKeyTypes() as $keyType) {
+				$arraysToProcessPerKey[$keyType->getValue()][] = $i;
+			}
+		}
+
+		$eligibleCombinations = [];
+
+		foreach ($arraysToProcessPerKey as $arrays) {
+			for ($i = 0, $arraysCount = count($arrays); $i < $arraysCount - 1; $i++) {
+				for ($j = $i + 1; $j < $arraysCount; $j++) {
+					$eligibleCombinations[$arrays[$i]][$arrays[$j]] ??= 0;
+					$eligibleCombinations[$arrays[$i]][$arrays[$j]]++;
+				}
+			}
+		}
+
+		foreach ($eligibleCombinations as $i => $other) {
+			if (!array_key_exists($i, $arraysToProcess)) {
+				continue;
+			}
+
+			foreach ($other as $j => $overlappingKeysCount) {
+				if (!array_key_exists($j, $arraysToProcess)) {
+					continue;
+				}
+
+				if (
+					$preserveTaggedUnions
+					&& $overlappingKeysCount === count($arraysToProcess[$i]->getKeyTypes())
+					&& $arraysToProcess[$j]->isKeysSupersetOf($arraysToProcess[$i])
+				) {
+					$arraysToProcess[$j] = $arraysToProcess[$j]->mergeWith($arraysToProcess[$i]);
+					unset($arraysToProcess[$i]);
+					continue 2;
+				}
+
+				if (
+					$preserveTaggedUnions
+					&& $overlappingKeysCount === count($arraysToProcess[$j]->getKeyTypes())
+					&& $arraysToProcess[$i]->isKeysSupersetOf($arraysToProcess[$j])
+				) {
+					$arraysToProcess[$i] = $arraysToProcess[$i]->mergeWith($arraysToProcess[$j]);
+					unset($arraysToProcess[$j]);
+					continue 1;
+				}
+
+				if (
+					!$preserveTaggedUnions
+					// both arrays have same keys
+					&& $overlappingKeysCount === count($arraysToProcess[$i]->getKeyTypes())
+					&& $overlappingKeysCount === count($arraysToProcess[$j]->getKeyTypes())
+				) {
+					$arraysToProcess[$j] = $arraysToProcess[$j]->mergeWith($arraysToProcess[$i]);
+					unset($arraysToProcess[$i]);
+					continue 2;
+				}
+			}
+		}
+
+		return array_merge($newArrays, $arraysToProcess);
+	}
+
+	public static function intersect(Type ...$types): Type
+	{
+		$types = array_values($types);
+
+		$typesCount = count($types);
+		if ($typesCount === 0) {
+			return new NeverType();
+		}
+		if ($typesCount === 1) {
+			return $types[0];
+		}
+
+		$sortTypes = static function (Type $a, Type $b): int {
+			if (!$a instanceof UnionType || !$b instanceof UnionType) {
+				return 0;
+			}
+
+			if ($a instanceof TemplateType) {
+				return -1;
+			}
+			if ($b instanceof TemplateType) {
+				return 1;
+			}
+
+			if ($a instanceof BenevolentUnionType) {
+				return -1;
+			}
+			if ($b instanceof BenevolentUnionType) {
+				return 1;
+			}
+
+			return 0;
+		};
+		usort($types, $sortTypes);
+		// transform A & (B | C) to (A & B) | (A & C)
+		foreach ($types as $i => $type) {
+			if (!$type instanceof UnionType) {
+				continue;
+			}
+
+			$topLevelUnionSubTypes = [];
+			$innerTypes = $type->getTypes();
+			usort($innerTypes, $sortTypes);
+			$slice1 = array_slice($types, 0, $i);
+			$slice2 = array_slice($types, $i + 1);
+			foreach ($innerTypes as $innerUnionSubType) {
+				$topLevelUnionSubTypes[] = self::intersect(
+					$innerUnionSubType,
+					...$slice1,
+					...$slice2,
+				);
+			}
+
+			$union = self::union(...$topLevelUnionSubTypes);
+			if ($union instanceof NeverType) {
+				return $union;
+			}
+
+			if ($type instanceof BenevolentUnionType) {
+				$union = TypeUtils::toBenevolentUnion($union);
+			}
+
+			if ($type instanceof TemplateUnionType || $type instanceof TemplateBenevolentUnionType) {
+				$union = TemplateTypeFactory::create(
+					$type->getScope(),
+					$type->getName(),
+					$union,
+					$type->getVariance(),
+					$type->getStrategy(),
+					$type->getDefault(),
+				);
+			}
+
+			return $union;
+		}
+		$typesCount = count($types);
+
+		// transform A & (B & C) to A & B & C
+		for ($i = 0; $i < $typesCount; $i++) {
+			$type = $types[$i];
+
+			if (!($type instanceof IntersectionType)) {
+				continue;
+			}
+
+			array_splice($types, $i--, 1, $type->getTypes());
+			$typesCount = count($types);
+		}
+
+		$hasOffsetValueTypeCount = 0;
+		$newTypes = [];
+		foreach ($types as $type) {
+			if (!$type instanceof HasOffsetValueType) {
+				$newTypes[] = $type;
+				continue;
+			}
+
+			$hasOffsetValueTypeCount++;
+		}
+
+		if ($hasOffsetValueTypeCount > 32) {
+			$newTypes[] = new OversizedArrayType();
+			$types = $newTypes;
+			$typesCount = count($types);
+		}
+
+		usort($types, static function (Type $a, Type $b): int {
+			// move subtractables with subtracts before those without to avoid loosing them in the union logic
+			if ($a instanceof SubtractableType && $a->getSubtractedType() !== null) {
+				return -1;
+			}
+			if ($b instanceof SubtractableType && $b->getSubtractedType() !== null) {
+				return 1;
+			}
+
+			if ($a instanceof ConstantArrayType && !$b instanceof ConstantArrayType) {
+				return -1;
+			}
+			if ($b instanceof ConstantArrayType && !$a instanceof ConstantArrayType) {
+				return 1;
+			}
+
+			return 0;
+		});
+
+		// transform IntegerType & ConstantIntegerType to ConstantIntegerType
+		// transform Child & Parent to Child
+		// transform Object & ~null to Object
+		// transform A & A to A
+		// transform int[] & string to never
+		// transform callable & int to never
+		// transform A & ~A to never
+		// transform int & string to never
+		for ($i = 0; $i < $typesCount; $i++) {
+			for ($j = $i + 1; $j < $typesCount; $j++) {
+				if ($types[$j] instanceof SubtractableType) {
+					$typeWithoutSubtractedTypeA = $types[$j]->getTypeWithoutSubtractedType();
+
+					if ($typeWithoutSubtractedTypeA instanceof MixedType && $types[$i] instanceof MixedType) {
+						$isSuperTypeSubtractableA = $typeWithoutSubtractedTypeA->isSuperTypeOfMixed($types[$i]);
+					} else {
+						$isSuperTypeSubtractableA = $typeWithoutSubtractedTypeA->isSuperTypeOf($types[$i]);
+					}
+					if ($isSuperTypeSubtractableA->yes()) {
+						$types[$i] = self::unionWithSubtractedType($types[$i], $types[$j]->getSubtractedType());
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue 1;
+					}
+				}
+
+				if ($types[$i] instanceof SubtractableType) {
+					$typeWithoutSubtractedTypeB = $types[$i]->getTypeWithoutSubtractedType();
+
+					if ($typeWithoutSubtractedTypeB instanceof MixedType && $types[$j] instanceof MixedType) {
+						$isSuperTypeSubtractableB = $typeWithoutSubtractedTypeB->isSuperTypeOfMixed($types[$j]);
+					} else {
+						$isSuperTypeSubtractableB = $typeWithoutSubtractedTypeB->isSuperTypeOf($types[$j]);
+					}
+					if ($isSuperTypeSubtractableB->yes()) {
+						$types[$j] = self::unionWithSubtractedType($types[$j], $types[$i]->getSubtractedType());
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+				}
+
+				if ($types[$i] instanceof IntegerRangeType) {
+					$intersectionType = $types[$i]->tryIntersect($types[$j]);
+					if ($intersectionType !== null) {
+						$types[$j] = $intersectionType;
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+				}
+
+				if ($types[$j] instanceof IterableType) {
+					$isSuperTypeA = $types[$j]->isSuperTypeOfMixed($types[$i]);
+				} else {
+					$isSuperTypeA = $types[$j]->isSuperTypeOf($types[$i]);
+				}
+
+				if ($isSuperTypeA->yes()) {
+					array_splice($types, $j--, 1);
+					$typesCount--;
+					continue;
+				}
+
+				if ($types[$i] instanceof IterableType) {
+					$isSuperTypeB = $types[$i]->isSuperTypeOfMixed($types[$j]);
+				} else {
+					$isSuperTypeB = $types[$i]->isSuperTypeOf($types[$j]);
+				}
+
+				if ($isSuperTypeB->maybe()) {
+					if ($types[$i] instanceof ConstantArrayType && $types[$j] instanceof HasOffsetType) {
+						$types[$i] = $types[$i]->makeOffsetRequired($types[$j]->getOffsetType());
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if ($types[$j] instanceof ConstantArrayType && $types[$i] instanceof HasOffsetType) {
+						$types[$j] = $types[$j]->makeOffsetRequired($types[$i]->getOffsetType());
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if (
+						$types[$i] instanceof ConstantArrayType
+						&& count($types[$i]->getKeyTypes()) === 1
+						&& $types[$i]->isOptionalKey(0)
+						&& $types[$j] instanceof NonEmptyArrayType
+					) {
+						$types[$i] = $types[$i]->makeOffsetRequired($types[$i]->getKeyTypes()[0]);
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if (
+						$types[$j] instanceof ConstantArrayType
+						&& count($types[$j]->getKeyTypes()) === 1
+						&& $types[$j]->isOptionalKey(0)
+						&& $types[$i] instanceof NonEmptyArrayType
+					) {
+						$types[$j] = $types[$j]->makeOffsetRequired($types[$j]->getKeyTypes()[0]);
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$i] instanceof ConstantArrayType && $types[$j] instanceof HasOffsetValueType) {
+						$offsetType = $types[$j]->getOffsetType();
+						$valueType = $types[$j]->getValueType();
+						$newValueType = self::intersect($types[$i]->getOffsetValueType($offsetType), $valueType);
+						if ($newValueType instanceof NeverType) {
+							return $newValueType;
+						}
+						$types[$i] = $types[$i]->setOffsetValueType($offsetType, $newValueType);
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if ($types[$j] instanceof ConstantArrayType && $types[$i] instanceof HasOffsetValueType) {
+						$offsetType = $types[$i]->getOffsetType();
+						$valueType = $types[$i]->getValueType();
+						$newValueType = self::intersect($types[$j]->getOffsetValueType($offsetType), $valueType);
+						if ($newValueType instanceof NeverType) {
+							return $newValueType;
+						}
+
+						$types[$j] = $types[$j]->setOffsetValueType($offsetType, $newValueType);
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$i] instanceof OversizedArrayType && $types[$j] instanceof HasOffsetValueType) {
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if ($types[$j] instanceof OversizedArrayType && $types[$i] instanceof HasOffsetValueType) {
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$i] instanceof ObjectShapeType && $types[$j] instanceof HasPropertyType) {
+						$types[$i] = $types[$i]->makePropertyRequired($types[$j]->getPropertyName());
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if ($types[$j] instanceof ObjectShapeType && $types[$i] instanceof HasPropertyType) {
+						$types[$j] = $types[$j]->makePropertyRequired($types[$i]->getPropertyName());
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$i] instanceof ConstantArrayType && ($types[$j] instanceof ArrayType || $types[$j] instanceof ConstantArrayType)) {
+						$newArray = ConstantArrayTypeBuilder::createEmpty();
+						$valueTypes = $types[$i]->getValueTypes();
+						foreach ($types[$i]->getKeyTypes() as $k => $keyType) {
+							$newArray->setOffsetValueType(
+								self::intersect($keyType, $types[$j]->getIterableKeyType()),
+								self::intersect($valueTypes[$k], $types[$j]->getIterableValueType()),
+								$types[$i]->isOptionalKey($k) && !$types[$j]->hasOffsetValueType($keyType)->yes(),
+							);
+						}
+						$types[$i] = $newArray->getArray();
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$j] instanceof ConstantArrayType && ($types[$i] instanceof ArrayType || $types[$i] instanceof ConstantArrayType)) {
+						$newArray = ConstantArrayTypeBuilder::createEmpty();
+						$valueTypes = $types[$j]->getValueTypes();
+						foreach ($types[$j]->getKeyTypes() as $k => $keyType) {
+							$newArray->setOffsetValueType(
+								self::intersect($keyType, $types[$i]->getIterableKeyType()),
+								self::intersect($valueTypes[$k], $types[$i]->getIterableValueType()),
+								$types[$j]->isOptionalKey($k) && !$types[$i]->hasOffsetValueType($keyType)->yes(),
+							);
+						}
+						$types[$j] = $newArray->getArray();
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if (
+						($types[$i] instanceof ArrayType || $types[$i] instanceof ConstantArrayType || $types[$i] instanceof IterableType) &&
+						($types[$j] instanceof ArrayType || $types[$j] instanceof ConstantArrayType || $types[$j] instanceof IterableType)
+					) {
+						$keyType = self::intersect($types[$i]->getIterableKeyType(), $types[$j]->getKeyType());
+						$itemType = self::intersect($types[$i]->getItemType(), $types[$j]->getItemType());
+						if ($types[$i] instanceof IterableType && $types[$j] instanceof IterableType) {
+							$types[$j] = new IterableType($keyType, $itemType);
+						} else {
+							$types[$j] = new ArrayType($keyType, $itemType);
+						}
+						array_splice($types, $i--, 1);
+						$typesCount--;
+						continue 2;
+					}
+
+					if ($types[$i] instanceof GenericClassStringType && $types[$j] instanceof GenericClassStringType) {
+						$genericType = self::intersect($types[$i]->getGenericType(), $types[$j]->getGenericType());
+						$types[$i] = new GenericClassStringType($genericType);
+						array_splice($types, $j--, 1);
+						$typesCount--;
+						continue;
+					}
+
+					if (
+						$types[$i] instanceof ArrayType
+						&& get_class($types[$i]) === ArrayType::class
+						&& $types[$j] instanceof AccessoryArrayListType
+						&& !$types[$j]->getIterableKeyType()->isSuperTypeOf($types[$i]->getIterableKeyType())->yes()
+					) {
+						$keyType = self::intersect($types[$i]->getIterableKeyType(), $types[$j]->getIterableKeyType());
+						if ($keyType instanceof NeverType) {
+							return $keyType;
+						}
+						$types[$i] = new ArrayType($keyType, $types[$i]->getItemType());
+						continue;
+					}
+
+					continue;
+				}
+
+				if ($isSuperTypeB->yes()) {
+					array_splice($types, $i--, 1);
+					$typesCount--;
+					continue 2;
+				}
+
+				if ($isSuperTypeA->no()) {
+					return new NeverType();
+				}
+			}
+		}
+
+		if ($typesCount === 1) {
+			return $types[0];
+		}
+
+		return new IntersectionType($types);
+	}
+
+	public static function removeFalsey(Type $type): Type
+	{
+		return self::remove($type, StaticTypeFactory::falsey());
+	}
+
+	public static function removeTruthy(Type $type): Type
+	{
+		return self::remove($type, StaticTypeFactory::truthy());
+	}
+
+}
diff --git a/src/Type/TypeResult.php b/src/Type/TypeResult.php
new file mode 100644
index 00000000..b83eab3f
--- /dev/null
+++ b/src/Type/TypeResult.php
@@ -0,0 +1,30 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+/**
+ * @template-covariant T of Type
+ */
+final class TypeResult
+{
+
+	public readonly Type $type;
+
+	/** @var list<string> */
+	public readonly array $reasons;
+
+	/**
+	 * @param T $type
+	 * @param list<string> $reasons
+	 */
+	public function __construct(
+		Type $type,
+		array $reasons,
+	)
+	{
+		$this->type = $type;
+		$this->reasons = $reasons;
+	}
+
+}
diff --git a/src/Type/TypeTraverser.php b/src/Type/TypeTraverser.php
new file mode 100644
index 00000000..707720a9
--- /dev/null
+++ b/src/Type/TypeTraverser.php
@@ -0,0 +1,62 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+final class TypeTraverser
+{
+
+	/** @var callable(Type $type, callable(Type): Type $traverse): Type */
+	private $cb;
+
+	/**
+	 * Map a Type recursively
+	 *
+	 * For every Type instance, the callback can return a new Type, and/or
+	 * decide to traverse inner types or to ignore them.
+	 *
+	 * The following example converts constant strings to objects, while
+	 * preserving unions and intersections:
+	 *
+	 * TypeTraverser::map($type, function (Type $type, callable $traverse): Type {
+	 *     if ($type instanceof UnionType || $type instanceof IntersectionType) {
+	 *         // Traverse inner types
+	 *         return $traverse($type);
+	 *     }
+	 *     if ($type instanceof ConstantStringType) {
+	 *         // Replaces the current type, and don't traverse
+	 *         return new ObjectType($type->getValue());
+	 *     }
+	 *     // Replaces the current type, and don't traverse
+	 *     return new MixedType();
+	 * });
+	 *
+	 * @api
+	 * @param callable(Type $type, callable(Type): Type $traverse): Type $cb
+	 */
+	public static function map(Type $type, callable $cb): Type
+	{
+		$self = new self($cb);
+
+		return $self->mapInternal($type);
+	}
+
+	/** @param callable(Type $type, callable(Type): Type $traverse): Type $cb */
+	private function __construct(callable $cb)
+	{
+		$this->cb = $cb;
+	}
+
+	/** @internal */
+	public function mapInternal(Type $type): Type
+	{
+		return ($this->cb)($type, [$this, 'traverseInternal']);
+	}
+
+	/** @internal */
+	public function traverseInternal(Type $type): Type
+	{
+		return $type->traverse([$this, 'mapInternal']);
+	}
+
+}
diff --git a/src/Type/TypeUtils.php b/src/Type/TypeUtils.php
new file mode 100644
index 00000000..c335d6e0
--- /dev/null
+++ b/src/Type/TypeUtils.php
@@ -0,0 +1,239 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Accessory\HasPropertyType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Generic\TemplateBenevolentUnionType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateUnionType;
+use function array_merge;
+
+/**
+ * @api
+ */
+final class TypeUtils
+{
+
+	/**
+	 * @return list<ConstantIntegerType>
+	 */
+	public static function getConstantIntegers(Type $type): array
+	{
+		return self::map(ConstantIntegerType::class, $type, false);
+	}
+
+	/**
+	 * @return list<IntegerRangeType>
+	 */
+	public static function getIntegerRanges(Type $type): array
+	{
+		return self::map(IntegerRangeType::class, $type, false);
+	}
+
+	/**
+	 * @return list<mixed>
+	 */
+	private static function map(
+		string $typeClass,
+		Type $type,
+		bool $inspectIntersections,
+		bool $stopOnUnmatched = true,
+	): array
+	{
+		if ($type instanceof $typeClass) {
+			return [$type];
+		}
+
+		if ($type instanceof UnionType) {
+			$matchingTypes = [];
+			foreach ($type->getTypes() as $innerType) {
+				$matchingInner = self::map($typeClass, $innerType, $inspectIntersections, $stopOnUnmatched);
+
+				if ($matchingInner === []) {
+					if ($stopOnUnmatched) {
+						return [];
+					}
+
+					continue;
+				}
+
+				foreach ($matchingInner as $innerMapped) {
+					$matchingTypes[] = $innerMapped;
+				}
+			}
+
+			return $matchingTypes;
+		}
+
+		if ($inspectIntersections && $type instanceof IntersectionType) {
+			$matchingTypes = [];
+			foreach ($type->getTypes() as $innerType) {
+				if (!$innerType instanceof $typeClass) {
+					if ($stopOnUnmatched) {
+						return [];
+					}
+
+					continue;
+				}
+
+				$matchingTypes[] = $innerType;
+			}
+
+			return $matchingTypes;
+		}
+
+		return [];
+	}
+
+	public static function toBenevolentUnion(Type $type): Type
+	{
+		if ($type instanceof BenevolentUnionType) {
+			return $type;
+		}
+
+		if ($type instanceof UnionType) {
+			return new BenevolentUnionType($type->getTypes());
+		}
+
+		return $type;
+	}
+
+	/**
+	 * @return ($type is UnionType ? UnionType : Type)
+	 */
+	public static function toStrictUnion(Type $type): Type
+	{
+		if ($type instanceof TemplateBenevolentUnionType) {
+			return new TemplateUnionType(
+				$type->getScope(),
+				$type->getStrategy(),
+				$type->getVariance(),
+				$type->getName(),
+				static::toStrictUnion($type->getBound()),
+				$type->getDefault(),
+			);
+		}
+
+		if ($type instanceof BenevolentUnionType) {
+			return new UnionType($type->getTypes());
+		}
+
+		return $type;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	public static function flattenTypes(Type $type): array
+	{
+		if ($type instanceof ConstantArrayType) {
+			return $type->getAllArrays();
+		}
+
+		if ($type instanceof UnionType) {
+			$types = [];
+			foreach ($type->getTypes() as $innerType) {
+				if ($innerType instanceof ConstantArrayType) {
+					foreach ($innerType->getAllArrays() as $array) {
+						$types[] = $array;
+					}
+					continue;
+				}
+
+				$types[] = $innerType;
+			}
+
+			return $types;
+		}
+
+		return [$type];
+	}
+
+	public static function findThisType(Type $type): ?ThisType
+	{
+		if ($type instanceof ThisType) {
+			return $type;
+		}
+
+		if ($type instanceof UnionType || $type instanceof IntersectionType) {
+			foreach ($type->getTypes() as $innerType) {
+				$thisType = self::findThisType($innerType);
+				if ($thisType !== null) {
+					return $thisType;
+				}
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return HasPropertyType[]
+	 */
+	public static function getHasPropertyTypes(Type $type): array
+	{
+		if ($type instanceof HasPropertyType) {
+			return [$type];
+		}
+
+		if ($type instanceof UnionType || $type instanceof IntersectionType) {
+			$hasPropertyTypes = [[]];
+			foreach ($type->getTypes() as $innerType) {
+				$hasPropertyTypes[] = self::getHasPropertyTypes($innerType);
+			}
+
+			return array_merge(...$hasPropertyTypes);
+		}
+
+		return [];
+	}
+
+	/**
+	 * @return AccessoryType[]
+	 */
+	public static function getAccessoryTypes(Type $type): array
+	{
+		return self::map(AccessoryType::class, $type, true, false);
+	}
+
+	public static function containsTemplateType(Type $type): bool
+	{
+		$containsTemplateType = false;
+		TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$containsTemplateType): Type {
+			if ($type instanceof TemplateType) {
+				$containsTemplateType = true;
+			}
+
+			return $containsTemplateType ? $type : $traverse($type);
+		});
+
+		return $containsTemplateType;
+	}
+
+	public static function resolveLateResolvableTypes(Type $type, bool $resolveUnresolvableTypes = true): Type
+	{
+		/** @var int $ignoreResolveUnresolvableTypesLevel */
+		$ignoreResolveUnresolvableTypesLevel = 0;
+
+		return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($resolveUnresolvableTypes, &$ignoreResolveUnresolvableTypesLevel): Type {
+			while ($type instanceof LateResolvableType && (($resolveUnresolvableTypes && $ignoreResolveUnresolvableTypesLevel === 0) || $type->isResolvable())) {
+				$type = $type->resolve();
+			}
+
+			if ($type instanceof CallableType || $type instanceof ClosureType) {
+				$ignoreResolveUnresolvableTypesLevel++;
+				$result = $traverse($type);
+				$ignoreResolveUnresolvableTypesLevel--;
+
+				return $result;
+			}
+
+			return $traverse($type);
+		});
+	}
+
+}
diff --git a/src/Type/TypeWithClassName.php b/src/Type/TypeWithClassName.php
new file mode 100644
index 00000000..2fc3f9c6
--- /dev/null
+++ b/src/Type/TypeWithClassName.php
@@ -0,0 +1,18 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Reflection\ClassReflection;
+
+/** @api */
+interface TypeWithClassName extends Type
+{
+
+	public function getClassName(): string;
+
+	public function getAncestorWithClassName(string $className): ?self;
+
+	public function getClassReflection(): ?ClassReflection;
+
+}
diff --git a/src/Type/TypehintHelper.php b/src/Type/TypehintHelper.php
new file mode 100644
index 00000000..cc60701a
--- /dev/null
+++ b/src/Type/TypehintHelper.php
@@ -0,0 +1,156 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PhpParser\Node\Identifier;
+use PhpParser\Node\Name\FullyQualified;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Generic\TemplateTypeHelper;
+use ReflectionType;
+use function array_map;
+use function count;
+use function get_class;
+use function sprintf;
+
+final class TypehintHelper
+{
+
+	/** @api */
+	public static function decideTypeFromReflection(
+		?ReflectionType $reflectionType,
+		?Type $phpDocType = null,
+		ClassReflection|null $selfClass = null,
+		bool $isVariadic = false,
+	): Type
+	{
+		if ($reflectionType === null) {
+			if ($isVariadic && ($phpDocType instanceof ArrayType || $phpDocType instanceof ConstantArrayType)) {
+				$phpDocType = $phpDocType->getItemType();
+			}
+			return $phpDocType ?? new MixedType();
+		}
+
+		if ($reflectionType instanceof ReflectionUnionType) {
+			$type = TypeCombinator::union(...array_map(static fn (ReflectionType $type): Type => self::decideTypeFromReflection($type, null, $selfClass, false), $reflectionType->getTypes()));
+
+			return self::decideType($type, $phpDocType);
+		}
+
+		if ($reflectionType instanceof ReflectionIntersectionType) {
+			$types = [];
+			foreach ($reflectionType->getTypes() as $innerReflectionType) {
+				$innerType = self::decideTypeFromReflection($innerReflectionType, null, $selfClass, false);
+				if (!$innerType->isObject()->yes()) {
+					return new NeverType();
+				}
+
+				$types[] = $innerType;
+			}
+
+			return self::decideType(TypeCombinator::intersect(...$types), $phpDocType);
+		}
+
+		if (!$reflectionType instanceof ReflectionNamedType) {
+			throw new ShouldNotHappenException(sprintf('Unexpected type: %s', get_class($reflectionType)));
+		}
+
+		if ($reflectionType->isIdentifier()) {
+			$typeNode = new Identifier($reflectionType->getName());
+		} else {
+			$typeNode = new FullyQualified($reflectionType->getName());
+		}
+
+		$type = ParserNodeTypeToPHPStanType::resolve($typeNode, $selfClass);
+		if ($reflectionType->allowsNull()) {
+			$type = TypeCombinator::addNull($type);
+		} elseif ($phpDocType !== null) {
+			$phpDocType = TypeCombinator::removeNull($phpDocType);
+		}
+
+		return self::decideType($type, $phpDocType);
+	}
+
+	public static function decideType(
+		Type $type,
+		?Type $phpDocType = null,
+	): Type
+	{
+		if ($type instanceof BenevolentUnionType) {
+			return $type;
+		}
+
+		if ($phpDocType !== null && !$phpDocType instanceof ErrorType) {
+			if ($phpDocType instanceof NeverType && $phpDocType->isExplicit()) {
+				return $phpDocType;
+			}
+			if (
+				$type instanceof MixedType
+				&& !$type->isExplicitMixed()
+				&& $phpDocType->isVoid()->yes()
+			) {
+				return $phpDocType;
+			}
+
+			if (TypeCombinator::removeNull($type) instanceof IterableType) {
+				if ($phpDocType instanceof UnionType) {
+					$innerTypes = [];
+					foreach ($phpDocType->getTypes() as $innerType) {
+						if ($innerType instanceof ArrayType || $innerType instanceof ConstantArrayType) {
+							$innerTypes[] = new IterableType(
+								$innerType->getIterableKeyType(),
+								$innerType->getItemType(),
+							);
+						} else {
+							$innerTypes[] = $innerType;
+						}
+					}
+					$phpDocType = new UnionType($innerTypes);
+				} elseif ($phpDocType instanceof ArrayType || $phpDocType instanceof ConstantArrayType) {
+					$phpDocType = new IterableType(
+						$phpDocType->getKeyType(),
+						$phpDocType->getItemType(),
+					);
+				}
+			}
+
+			if (
+				(!$phpDocType instanceof NeverType || ($type instanceof MixedType && !$type->isExplicitMixed()))
+				&& $type->isSuperTypeOf(TemplateTypeHelper::resolveToBounds($phpDocType))->yes()
+			) {
+				$resultType = $phpDocType;
+			} else {
+				$resultType = $type;
+			}
+
+			if ($type instanceof UnionType) {
+				$addToUnionTypes = [];
+				foreach ($type->getTypes() as $innerType) {
+					if (!$innerType->isSuperTypeOf($resultType)->no()) {
+						continue;
+					}
+
+					$addToUnionTypes[] = $innerType;
+				}
+
+				if (count($addToUnionTypes) > 0) {
+					$type = TypeCombinator::union($resultType, ...$addToUnionTypes);
+				} else {
+					$type = $resultType;
+				}
+			} elseif (TypeCombinator::containsNull($type)) {
+				$type = TypeCombinator::addNull($resultType);
+			} else {
+				$type = $resultType;
+			}
+		}
+
+		return $type;
+	}
+
+}
diff --git a/src/Type/UnionType.php b/src/Type/UnionType.php
new file mode 100644
index 00000000..498b48c7
--- /dev/null
+++ b/src/Type/UnionType.php
@@ -0,0 +1,1198 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use DateTime;
+use DateTimeImmutable;
+use DateTimeInterface;
+use Error;
+use Exception;
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\PhpDocParser\Ast\Type\UnionTypeNode;
+use PHPStan\Reflection\ClassConstantReflection;
+use PHPStan\Reflection\ClassMemberAccessAnswerer;
+use PHPStan\Reflection\ExtendedMethodReflection;
+use PHPStan\Reflection\ExtendedPropertyReflection;
+use PHPStan\Reflection\InitializerExprTypeResolver;
+use PHPStan\Reflection\Type\UnionTypeUnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnionTypeUnresolvedPropertyPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
+use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
+use PHPStan\ShouldNotHappenException;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Generic\GenericClassStringType;
+use PHPStan\Type\Generic\TemplateMixedType;
+use PHPStan\Type\Generic\TemplateType;
+use PHPStan\Type\Generic\TemplateTypeMap;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Generic\TemplateUnionType;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use Throwable;
+use function array_diff_assoc;
+use function array_fill_keys;
+use function array_map;
+use function array_merge;
+use function array_slice;
+use function array_unique;
+use function array_values;
+use function count;
+use function implode;
+use function md5;
+use function sprintf;
+use function str_contains;
+
+/** @api */
+class UnionType implements CompoundType
+{
+
+	use NonGeneralizableTypeTrait;
+
+	public const EQUAL_UNION_CLASSES = [
+		DateTimeInterface::class => [DateTimeImmutable::class, DateTime::class],
+		Throwable::class => [Error::class, Exception::class], // phpcs:ignore SlevomatCodingStandard.Exceptions.ReferenceThrowableOnly.ReferencedGeneralException
+	];
+
+	private bool $sortedTypes = false;
+
+	/** @var array<int, string> */
+	private array $cachedDescriptions = [];
+
+	/**
+	 * @api
+	 * @param Type[] $types
+	 */
+	public function __construct(private array $types, private bool $normalized = false)
+	{
+		$throwException = static function () use ($types): void {
+			throw new ShouldNotHappenException(sprintf(
+				'Cannot create %s with: %s',
+				self::class,
+				implode(', ', array_map(static fn (Type $type): string => $type->describe(VerbosityLevel::value()), $types)),
+			));
+		};
+		if (count($types) < 2) {
+			$throwException();
+		}
+		foreach ($types as $type) {
+			if (!($type instanceof UnionType)) {
+				continue;
+			}
+			if ($type instanceof TemplateType) {
+				continue;
+			}
+
+			$throwException();
+		}
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	public function getTypes(): array
+	{
+		return $this->types;
+	}
+
+	/**
+	 * @param callable(Type $type): bool $filterCb
+	 */
+	public function filterTypes(callable $filterCb): Type
+	{
+		$newTypes = [];
+		$changed = false;
+		foreach ($this->getTypes() as $innerType) {
+			if (!$filterCb($innerType)) {
+				$changed = true;
+				continue;
+			}
+
+			$newTypes[] = $innerType;
+		}
+
+		if (!$changed) {
+			return $this;
+		}
+
+		return TypeCombinator::union(...$newTypes);
+	}
+
+	public function isNormalized(): bool
+	{
+		return $this->normalized;
+	}
+
+	/**
+	 * @return Type[]
+	 */
+	protected function getSortedTypes(): array
+	{
+		if ($this->sortedTypes) {
+			return $this->types;
+		}
+
+		$this->types = UnionTypeHelper::sortTypes($this->types);
+		$this->sortedTypes = true;
+
+		return $this->types;
+	}
+
+	public function getReferencedClasses(): array
+	{
+		$classes = [];
+		foreach ($this->types as $type) {
+			foreach ($type->getReferencedClasses() as $className) {
+				$classes[] = $className;
+			}
+		}
+
+		return $classes;
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return array_values(array_unique($this->pickFromTypes(
+			static fn (Type $type) => $type->getObjectClassNames(),
+			static fn (Type $type) => $type->isObject()->yes(),
+		)));
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return $this->pickFromTypes(
+			static fn (Type $type) => $type->getObjectClassReflections(),
+			static fn (Type $type) => $type->isObject()->yes(),
+		);
+	}
+
+	public function getArrays(): array
+	{
+		return $this->pickFromTypes(
+			static fn (Type $type) => $type->getArrays(),
+			static fn (Type $type) => $type->isArray()->yes(),
+		);
+	}
+
+	public function getConstantArrays(): array
+	{
+		return $this->pickFromTypes(
+			static fn (Type $type) => $type->getConstantArrays(),
+			static fn (Type $type) => $type->isArray()->yes(),
+		);
+	}
+
+	public function getConstantStrings(): array
+	{
+		return $this->pickFromTypes(
+			static fn (Type $type) => $type->getConstantStrings(),
+			static fn (Type $type) => $type->isString()->yes(),
+		);
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		foreach (self::EQUAL_UNION_CLASSES as $baseClass => $classes) {
+			if (!$type->equals(new ObjectType($baseClass))) {
+				continue;
+			}
+
+			$union = TypeCombinator::union(
+				...array_map(static fn (string $objectClass): Type => new ObjectType($objectClass), $classes),
+			);
+			if ($this->accepts($union, $strictTypes)->yes()) {
+				return AcceptsResult::createYes();
+			}
+			break;
+		}
+
+		$result = AcceptsResult::createNo();
+		foreach ($this->getSortedTypes() as $i => $innerType) {
+			$result = $result->or($innerType->accepts($type, $strictTypes)->decorateReasons(static fn (string $reason) => sprintf('Type #%d from the union: %s', $i + 1, $reason)));
+		}
+		if ($result->yes()) {
+			return $result;
+		}
+
+		if ($type instanceof CompoundType && !$type instanceof CallableType && !$type instanceof TemplateType && !$type instanceof IntersectionType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		if ($type instanceof TemplateUnionType) {
+			return $result->or($type->isAcceptedBy($this, $strictTypes));
+		}
+
+		if ($type->isEnum()->yes() && !$this->isEnum()->no()) {
+			$enumCasesUnion = TypeCombinator::union(...$type->getEnumCases());
+			if (!$type->equals($enumCasesUnion)) {
+				return $this->accepts($enumCasesUnion, $strictTypes);
+			}
+		}
+
+		return $result;
+	}
+
+	public function isSuperTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		if (
+			($otherType instanceof self && !$otherType instanceof TemplateUnionType)
+			|| $otherType instanceof IterableType
+			|| $otherType instanceof NeverType
+			|| $otherType instanceof ConditionalType
+			|| $otherType instanceof ConditionalTypeForParameter
+			|| $otherType instanceof IntegerRangeType
+		) {
+			return $otherType->isSubTypeOf($this);
+		}
+
+		$results = [];
+		foreach ($this->types as $innerType) {
+			$result = $innerType->isSuperTypeOf($otherType);
+			if ($result->yes()) {
+				return $result;
+			}
+			$results[] = $result;
+		}
+		$result = IsSuperTypeOfResult::createNo()->or(...$results);
+
+		if ($otherType instanceof TemplateUnionType) {
+			return $result->or($otherType->isSubTypeOf($this));
+		}
+
+		return $result;
+	}
+
+	public function isSubTypeOf(Type $otherType): IsSuperTypeOfResult
+	{
+		return IsSuperTypeOfResult::extremeIdentity(...array_map(static fn (Type $innerType) => $otherType->isSuperTypeOf($innerType), $this->types));
+	}
+
+	public function isAcceptedBy(Type $acceptingType, bool $strictTypes): AcceptsResult
+	{
+		return AcceptsResult::extremeIdentity(...array_map(static fn (Type $innerType) => $acceptingType->accepts($innerType, $strictTypes), $this->types));
+	}
+
+	public function equals(Type $type): bool
+	{
+		if (!$type instanceof static) {
+			return false;
+		}
+
+		if (count($this->types) !== count($type->types)) {
+			return false;
+		}
+
+		$otherTypes = $type->types;
+		foreach ($this->types as $innerType) {
+			$match = false;
+			foreach ($otherTypes as $i => $otherType) {
+				if (!$innerType->equals($otherType)) {
+					continue;
+				}
+
+				$match = true;
+				unset($otherTypes[$i]);
+				break;
+			}
+
+			if (!$match) {
+				return false;
+			}
+		}
+
+		return count($otherTypes) === 0;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		if (isset($this->cachedDescriptions[$level->getLevelValue()])) {
+			return $this->cachedDescriptions[$level->getLevelValue()];
+		}
+		$joinTypes = static function (array $types) use ($level): string {
+			$typeNames = [];
+			foreach ($types as $i => $type) {
+				if ($type instanceof ClosureType || $type instanceof CallableType || $type instanceof TemplateUnionType) {
+					$typeNames[] = sprintf('(%s)', $type->describe($level));
+				} elseif ($type instanceof TemplateType) {
+					$isLast = $i >= count($types) - 1;
+					$bound = $type->getBound();
+					if (
+						!$isLast
+						&& ($level->isTypeOnly() || $level->isValue())
+						&& !($bound instanceof MixedType && $bound->getSubtractedType() === null && !$bound instanceof TemplateMixedType)
+					) {
+						$typeNames[] = sprintf('(%s)', $type->describe($level));
+					} else {
+						$typeNames[] = $type->describe($level);
+					}
+				} elseif ($type instanceof IntersectionType) {
+					$intersectionDescription = $type->describe($level);
+					if (str_contains($intersectionDescription, '&')) {
+						$typeNames[] = sprintf('(%s)', $type->describe($level));
+					} else {
+						$typeNames[] = $intersectionDescription;
+					}
+				} else {
+					$typeNames[] = $type->describe($level);
+				}
+			}
+
+			if ($level->isPrecise()) {
+				$duplicates = array_diff_assoc($typeNames, array_unique($typeNames));
+				if (count($duplicates) > 0) {
+					$indexByDuplicate = array_fill_keys($duplicates, 0);
+					foreach ($typeNames as $key => $typeName) {
+						if (!isset($indexByDuplicate[$typeName])) {
+							continue;
+						}
+
+						$typeNames[$key] = $typeName . '#' . ++$indexByDuplicate[$typeName];
+					}
+				}
+			} else {
+				$typeNames = array_unique($typeNames);
+			}
+
+			if (count($typeNames) > 1024) {
+				return implode('|', array_slice($typeNames, 0, 1024)) . "|\u{2026}";
+			}
+
+			return implode('|', $typeNames);
+		};
+
+		return $this->cachedDescriptions[$level->getLevelValue()] = $level->handle(
+			function () use ($joinTypes): string {
+				$types = TypeCombinator::union(...array_map(static function (Type $type): Type {
+					if (
+						$type->isConstantValue()->yes()
+						&& $type->isTrue()->or($type->isFalse())->no()
+					) {
+						return $type->generalize(GeneralizePrecision::lessSpecific());
+					}
+
+					return $type;
+				}, $this->getSortedTypes()));
+
+				if ($types instanceof UnionType) {
+					return $joinTypes($types->getSortedTypes());
+				}
+
+				return $joinTypes([$types]);
+			},
+			fn (): string => $joinTypes($this->getSortedTypes()),
+		);
+	}
+
+	/**
+	 * @param callable(Type $type): TrinaryLogic $canCallback
+	 * @param callable(Type $type): TrinaryLogic $hasCallback
+	 */
+	private function hasInternal(
+		callable $canCallback,
+		callable $hasCallback,
+	): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->types, static function (Type $type) use ($canCallback, $hasCallback): TrinaryLogic {
+			if ($canCallback($type)->no()) {
+				return TrinaryLogic::createNo();
+			}
+
+			return $hasCallback($type);
+		});
+	}
+
+	/**
+	 * @template TObject of object
+	 * @param callable(Type $type): TrinaryLogic $hasCallback
+	 * @param callable(Type $type): TObject $getCallback
+	 * @return TObject
+	 */
+	private function getInternal(
+		callable $hasCallback,
+		callable $getCallback,
+	): object
+	{
+		/** @var TrinaryLogic|null $result */
+		$result = null;
+
+		/** @var TObject|null $object */
+		$object = null;
+		foreach ($this->types as $type) {
+			$has = $hasCallback($type);
+			if (!$has->yes()) {
+				continue;
+			}
+			if ($result !== null && $result->compareTo($has) !== $has) {
+				continue;
+			}
+
+			$get = $getCallback($type);
+			$result = $has;
+			$object = $get;
+		}
+
+		if ($object === null) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $object;
+	}
+
+	public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getTemplateType($ancestorClassName, $templateTypeName));
+	}
+
+	public function isObject(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isObject());
+	}
+
+	public function isEnum(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isEnum());
+	}
+
+	public function canAccessProperties(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->canAccessProperties());
+	}
+
+	public function hasProperty(string $propertyName): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->hasProperty($propertyName));
+	}
+
+	public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): ExtendedPropertyReflection
+	{
+		return $this->getUnresolvedPropertyPrototype($propertyName, $scope)->getTransformedProperty();
+	}
+
+	public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection
+	{
+		$propertyPrototypes = [];
+		foreach ($this->types as $type) {
+			if (!$type->hasProperty($propertyName)->yes()) {
+				continue;
+			}
+
+			$propertyPrototypes[] = $type->getUnresolvedPropertyPrototype($propertyName, $scope)->withFechedOnType($this);
+		}
+
+		$propertiesCount = count($propertyPrototypes);
+		if ($propertiesCount === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($propertiesCount === 1) {
+			return $propertyPrototypes[0];
+		}
+
+		return new UnionTypeUnresolvedPropertyPrototypeReflection($propertyName, $propertyPrototypes);
+	}
+
+	public function canCallMethods(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->canCallMethods());
+	}
+
+	public function hasMethod(string $methodName): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->hasMethod($methodName));
+	}
+
+	public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection
+	{
+		return $this->getUnresolvedMethodPrototype($methodName, $scope)->getTransformedMethod();
+	}
+
+	public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection
+	{
+		$methodPrototypes = [];
+		foreach ($this->types as $type) {
+			if (!$type->hasMethod($methodName)->yes()) {
+				continue;
+			}
+
+			$methodPrototypes[] = $type->getUnresolvedMethodPrototype($methodName, $scope)->withCalledOnType($this);
+		}
+
+		$methodsCount = count($methodPrototypes);
+		if ($methodsCount === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		if ($methodsCount === 1) {
+			return $methodPrototypes[0];
+		}
+
+		return new UnionTypeUnresolvedMethodPrototypeReflection($methodName, $methodPrototypes);
+	}
+
+	public function canAccessConstants(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->canAccessConstants());
+	}
+
+	public function hasConstant(string $constantName): TrinaryLogic
+	{
+		return $this->hasInternal(
+			static fn (Type $type): TrinaryLogic => $type->canAccessConstants(),
+			static fn (Type $type): TrinaryLogic => $type->hasConstant($constantName),
+		);
+	}
+
+	public function getConstant(string $constantName): ClassConstantReflection
+	{
+		return $this->getInternal(
+			static fn (Type $type): TrinaryLogic => $type->hasConstant($constantName),
+			static fn (Type $type): ClassConstantReflection => $type->getConstant($constantName),
+		);
+	}
+
+	public function isIterable(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isIterable());
+	}
+
+	public function isIterableAtLeastOnce(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isIterableAtLeastOnce());
+	}
+
+	public function getArraySize(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getArraySize());
+	}
+
+	public function getIterableKeyType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getIterableKeyType());
+	}
+
+	public function getFirstIterableKeyType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getFirstIterableKeyType());
+	}
+
+	public function getLastIterableKeyType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getLastIterableKeyType());
+	}
+
+	public function getIterableValueType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getIterableValueType());
+	}
+
+	public function getFirstIterableValueType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getFirstIterableValueType());
+	}
+
+	public function getLastIterableValueType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getLastIterableValueType());
+	}
+
+	public function isArray(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isArray());
+	}
+
+	public function isConstantArray(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isConstantArray());
+	}
+
+	public function isOversizedArray(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isOversizedArray());
+	}
+
+	public function isList(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isList());
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isString());
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isNumericString());
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isNonEmptyString());
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isNonFalsyString());
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isLiteralString());
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isLowercaseString());
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isUppercaseString());
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isClassString());
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getClassStringObjectType());
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getObjectTypeOrClassStringObjectType());
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isVoid());
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isScalar());
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return $this->unionResults(
+			static fn (Type $innerType): TrinaryLogic => $innerType->looseCompare($type, $phpVersion)->toTrinaryLogic()
+		)->toBooleanType();
+	}
+
+	public function isOffsetAccessible(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isOffsetAccessible());
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isOffsetAccessLegal());
+	}
+
+	public function hasOffsetValueType(Type $offsetType): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->hasOffsetValueType($offsetType));
+	}
+
+	public function getOffsetValueType(Type $offsetType): Type
+	{
+		$types = [];
+		foreach ($this->types as $innerType) {
+			$valueType = $innerType->getOffsetValueType($offsetType);
+			if ($valueType instanceof ErrorType) {
+				continue;
+			}
+
+			$types[] = $valueType;
+		}
+
+		if (count($types) === 0) {
+			return new ErrorType();
+		}
+
+		return TypeCombinator::union(...$types);
+	}
+
+	public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->setOffsetValueType($offsetType, $valueType, $unionValues));
+	}
+
+	public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->setExistingOffsetValueType($offsetType, $valueType));
+	}
+
+	public function unsetOffset(Type $offsetType): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->unsetOffset($offsetType));
+	}
+
+	public function getKeysArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getKeysArray());
+	}
+
+	public function getValuesArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getValuesArray());
+	}
+
+	public function chunkArray(Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->chunkArray($lengthType, $preserveKeys));
+	}
+
+	public function fillKeysArray(Type $valueType): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->fillKeysArray($valueType));
+	}
+
+	public function flipArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->flipArray());
+	}
+
+	public function intersectKeyArray(Type $otherArraysType): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->intersectKeyArray($otherArraysType));
+	}
+
+	public function popArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->popArray());
+	}
+
+	public function reverseArray(TrinaryLogic $preserveKeys): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->reverseArray($preserveKeys));
+	}
+
+	public function searchArray(Type $needleType): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->searchArray($needleType));
+	}
+
+	public function shiftArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->shiftArray());
+	}
+
+	public function shuffleArray(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->shuffleArray());
+	}
+
+	public function sliceArray(Type $offsetType, Type $lengthType, TrinaryLogic $preserveKeys): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->sliceArray($offsetType, $lengthType, $preserveKeys));
+	}
+
+	public function getEnumCases(): array
+	{
+		return $this->pickFromTypes(
+			static fn (Type $type) => $type->getEnumCases(),
+			static fn (Type $type) => $type->isObject()->yes(),
+		);
+	}
+
+	public function isCallable(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isCallable());
+	}
+
+	public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
+	{
+		$acceptors = [];
+
+		foreach ($this->types as $type) {
+			if ($type->isCallable()->no()) {
+				continue;
+			}
+
+			$acceptors = array_merge($acceptors, $type->getCallableParametersAcceptors($scope));
+		}
+
+		if (count($acceptors) === 0) {
+			throw new ShouldNotHappenException();
+		}
+
+		return $acceptors;
+	}
+
+	public function isCloneable(): TrinaryLogic
+	{
+		return $this->unionResults(static fn (Type $type): TrinaryLogic => $type->isCloneable());
+	}
+
+	public function isSmallerThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isSmallerThan($otherType, $phpVersion));
+	}
+
+	public function isSmallerThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isSmallerThanOrEqual($otherType, $phpVersion));
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isNull());
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isConstantValue());
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isConstantScalarValue());
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return $this->notBenevolentPickFromTypes(static fn (Type $type) => $type->getConstantScalarTypes());
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return $this->notBenevolentPickFromTypes(static fn (Type $type) => $type->getConstantScalarValues());
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isTrue());
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isFalse());
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isBoolean());
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isFloat());
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $type->isInteger());
+	}
+
+	public function getSmallerType(PhpVersion $phpVersion): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getSmallerType($phpVersion));
+	}
+
+	public function getSmallerOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getSmallerOrEqualType($phpVersion));
+	}
+
+	public function getGreaterType(PhpVersion $phpVersion): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getGreaterType($phpVersion));
+	}
+
+	public function getGreaterOrEqualType(PhpVersion $phpVersion): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->getGreaterOrEqualType($phpVersion));
+	}
+
+	public function isGreaterThan(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $otherType->isSmallerThan($type, $phpVersion));
+	}
+
+	public function isGreaterThanOrEqual(Type $otherType, PhpVersion $phpVersion): TrinaryLogic
+	{
+		return $this->notBenevolentUnionResults(static fn (Type $type): TrinaryLogic => $otherType->isSmallerThanOrEqual($type, $phpVersion));
+	}
+
+	public function toBoolean(): BooleanType
+	{
+		/** @var BooleanType $type */
+		$type = $this->unionTypes(static fn (Type $type): BooleanType => $type->toBoolean());
+
+		return $type;
+	}
+
+	public function toNumber(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toNumber());
+
+		return $type;
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toAbsoluteNumber());
+
+		return $type;
+	}
+
+	public function toString(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toString());
+
+		return $type;
+	}
+
+	public function toInteger(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toInteger());
+
+		return $type;
+	}
+
+	public function toFloat(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toFloat());
+
+		return $type;
+	}
+
+	public function toArray(): Type
+	{
+		$type = $this->unionTypes(static fn (Type $type): Type => $type->toArray());
+
+		return $type;
+	}
+
+	public function toArrayKey(): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->toArrayKey());
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->toCoercedArgumentType($strictTypes));
+	}
+
+	public function inferTemplateTypes(Type $receivedType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+		if ($receivedType instanceof UnionType) {
+			$myTypes = [];
+			$remainingReceivedTypes = [];
+			foreach ($receivedType->getTypes() as $receivedInnerType) {
+				foreach ($this->types as $type) {
+					if ($type->isSuperTypeOf($receivedInnerType)->yes()) {
+						$types = $types->union($type->inferTemplateTypes($receivedInnerType));
+						continue 2;
+					}
+					$myTypes[] = $type;
+				}
+				$remainingReceivedTypes[] = $receivedInnerType;
+			}
+			if (count($remainingReceivedTypes) === 0) {
+				return $types;
+			}
+			$receivedType = TypeCombinator::union(...$remainingReceivedTypes);
+		} else {
+			$myTypes = $this->types;
+		}
+
+		foreach ($myTypes as $type) {
+			if ($type instanceof TemplateType || ($type instanceof GenericClassStringType && $type->getGenericType() instanceof TemplateType)) {
+				continue;
+			}
+			$types = $types->union($type->inferTemplateTypes($receivedType));
+		}
+
+		if (!$types->isEmpty()) {
+			return $types;
+		}
+
+		foreach ($myTypes as $type) {
+			$types = $types->union($type->inferTemplateTypes($receivedType));
+		}
+
+		return $types;
+	}
+
+	public function inferTemplateTypesOn(Type $templateType): TemplateTypeMap
+	{
+		$types = TemplateTypeMap::createEmpty();
+
+		foreach ($this->types as $type) {
+			$types = $types->union($templateType->inferTemplateTypes($type));
+		}
+
+		return $types;
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		$references = [];
+
+		foreach ($this->types as $type) {
+			foreach ($type->getReferencedTemplateTypes($positionVariance) as $reference) {
+				$references[] = $reference;
+			}
+		}
+
+		return $references;
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		foreach ($this->types as $type) {
+			$newType = $cb($type);
+			if ($type !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeCombinator::union(...$types);
+		}
+
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		$types = [];
+		$changed = false;
+
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		if (count($this->getTypes()) !== count($right->getTypes())) {
+			return $this;
+		}
+
+		foreach ($this->getSortedTypes() as $i => $leftType) {
+			$rightType = $right->getSortedTypes()[$i];
+			$newType = $cb($leftType, $rightType);
+			if ($leftType !== $newType) {
+				$changed = true;
+			}
+			$types[] = $newType;
+		}
+
+		if ($changed) {
+			return TypeCombinator::union(...$types);
+		}
+
+		return $this;
+	}
+
+	public function tryRemove(Type $typeToRemove): ?Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => TypeCombinator::remove($type, $typeToRemove));
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return $this->unionTypes(static fn (Type $type): Type => $type->exponentiate($exponent));
+	}
+
+	public function getFiniteTypes(): array
+	{
+		$types = $this->notBenevolentPickFromTypes(static fn (Type $type) => $type->getFiniteTypes());
+		$uniquedTypes = [];
+		foreach ($types as $type) {
+			$uniquedTypes[md5($type->describe(VerbosityLevel::cache()))] = $type;
+		}
+
+		if (count($uniquedTypes) > InitializerExprTypeResolver::CALCULATE_SCALARS_LIMIT) {
+			return [];
+		}
+
+		return array_values($uniquedTypes);
+	}
+
+	/**
+	 * @param callable(Type $type): TrinaryLogic $getResult
+	 */
+	protected function unionResults(callable $getResult): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->types, $getResult);
+	}
+
+	/**
+	 * @param callable(Type $type): TrinaryLogic $getResult
+	 */
+	private function notBenevolentUnionResults(callable $getResult): TrinaryLogic
+	{
+		return TrinaryLogic::lazyExtremeIdentity($this->types, $getResult);
+	}
+
+	/**
+	 * @param callable(Type $type): Type $getType
+	 */
+	protected function unionTypes(callable $getType): Type
+	{
+		return TypeCombinator::union(...array_map($getType, $this->types));
+	}
+
+	/**
+	 * @template T
+	 * @param callable(Type $type): list<T> $getValues
+	 * @param callable(Type $type): bool $criteria
+	 * @return list<T>
+	 */
+	protected function pickFromTypes(
+		callable $getValues,
+		callable $criteria,
+	): array
+	{
+		$values = [];
+		foreach ($this->types as $type) {
+			$innerValues = $getValues($type);
+			if ($innerValues === []) {
+				return [];
+			}
+
+			foreach ($innerValues as $innerType) {
+				$values[] = $innerType;
+			}
+		}
+
+		return $values;
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new UnionTypeNode(array_map(static fn (Type $type) => $type->toPhpDocNode(), $this->getSortedTypes()));
+	}
+
+	/**
+	 * @template T
+	 * @param callable(Type $type): list<T> $getValues
+	 * @return list<T>
+	 */
+	private function notBenevolentPickFromTypes(callable $getValues): array
+	{
+		$values = [];
+		foreach ($this->types as $type) {
+			$innerValues = $getValues($type);
+			if ($innerValues === []) {
+				return [];
+			}
+
+			foreach ($innerValues as $innerType) {
+				$values[] = $innerType;
+			}
+		}
+
+		return $values;
+	}
+
+}
diff --git a/src/Type/UnionTypeHelper.php b/src/Type/UnionTypeHelper.php
new file mode 100644
index 00000000..4d1b4d32
--- /dev/null
+++ b/src/Type/UnionTypeHelper.php
@@ -0,0 +1,139 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Accessory\AccessoryType;
+use PHPStan\Type\Constant\ConstantBooleanType;
+use PHPStan\Type\Constant\ConstantFloatType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\Constant\ConstantStringType;
+use function count;
+use function strcasecmp;
+use function usort;
+use const PHP_INT_MIN;
+
+final class UnionTypeHelper
+{
+
+	/**
+	 * @param Type[] $types
+	 * @return Type[]
+	 */
+	public static function sortTypes(array $types): array
+	{
+		if (count($types) > 1024) {
+			return $types;
+		}
+
+		usort($types, static function (Type $a, Type $b): int {
+			if ($a instanceof NullType) {
+				return 1;
+			} elseif ($b instanceof NullType) {
+				return -1;
+			}
+
+			if ($a instanceof AccessoryType) {
+				if ($b instanceof AccessoryType) {
+					return self::compareStrings($a->describe(VerbosityLevel::value()), $b->describe(VerbosityLevel::value()));
+				}
+
+				return 1;
+			}
+			if ($b instanceof AccessoryType) {
+				return -1;
+			}
+
+			$aIsBool = $a instanceof ConstantBooleanType;
+			$bIsBool = $b instanceof ConstantBooleanType;
+			if ($aIsBool && !$bIsBool) {
+				return 1;
+			} elseif ($bIsBool && !$aIsBool) {
+				return -1;
+			}
+			if ($a instanceof ConstantScalarType && !$b instanceof ConstantScalarType) {
+				return -1;
+			} elseif (!$a instanceof ConstantScalarType && $b instanceof ConstantScalarType) {
+				return 1;
+			}
+
+			if (
+				(
+					$a instanceof ConstantIntegerType
+					|| $a instanceof ConstantFloatType
+				)
+				&& (
+					$b instanceof ConstantIntegerType
+					|| $b instanceof ConstantFloatType
+				)
+			) {
+				$cmp = $a->getValue() <=> $b->getValue();
+				if ($cmp !== 0) {
+					return $cmp;
+				}
+				if ($a instanceof ConstantIntegerType && $b instanceof ConstantFloatType) {
+					return -1;
+				}
+				if ($b instanceof ConstantIntegerType && $a instanceof ConstantFloatType) {
+					return 1;
+				}
+				return 0;
+			}
+
+			if ($a instanceof IntegerRangeType && $b instanceof IntegerRangeType) {
+				return ($a->getMin() ?? PHP_INT_MIN) <=> ($b->getMin() ?? PHP_INT_MIN);
+			}
+
+			if ($a instanceof IntegerRangeType && $b instanceof IntegerType) {
+				return 1;
+			}
+
+			if ($b instanceof IntegerRangeType && $a instanceof IntegerType) {
+				return -1;
+			}
+
+			if ($a instanceof ConstantStringType && $b instanceof ConstantStringType) {
+				return self::compareStrings($a->getValue(), $b->getValue());
+			}
+
+			if ($a->isConstantArray()->yes() && $b->isConstantArray()->yes()) {
+				if ($a->isIterableAtLeastOnce()->no()) {
+					if ($b->isIterableAtLeastOnce()->no()) {
+						return 0;
+					}
+
+					return -1;
+				} elseif ($b->isIterableAtLeastOnce()->no()) {
+					return 1;
+				}
+
+				return self::compareStrings($a->describe(VerbosityLevel::value()), $b->describe(VerbosityLevel::value()));
+			}
+
+			if (
+				($a instanceof CallableType || $a instanceof ClosureType)
+				&& ($b instanceof CallableType || $b instanceof ClosureType)
+			) {
+				return self::compareStrings($a->describe(VerbosityLevel::value()), $b->describe(VerbosityLevel::value()));
+			}
+
+			if ($a->isString()->yes() && $b->isString()->yes()) {
+				return self::compareStrings($a->describe(VerbosityLevel::precise()), $b->describe(VerbosityLevel::precise()));
+			}
+
+			return self::compareStrings($a->describe(VerbosityLevel::typeOnly()), $b->describe(VerbosityLevel::typeOnly()));
+		});
+		return $types;
+	}
+
+	private static function compareStrings(string $a, string $b): int
+	{
+		$cmp = strcasecmp($a, $b);
+		if ($cmp !== 0) {
+			return $cmp;
+		}
+
+		return $a <=> $b;
+	}
+
+}
diff --git a/src/Type/UsefulTypeAliasResolver.php b/src/Type/UsefulTypeAliasResolver.php
new file mode 100644
index 00000000..71c047ec
--- /dev/null
+++ b/src/Type/UsefulTypeAliasResolver.php
@@ -0,0 +1,154 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Analyser\NameScope;
+use PHPStan\PhpDoc\TypeNodeResolver;
+use PHPStan\PhpDoc\TypeStringResolver;
+use PHPStan\Reflection\ReflectionProvider;
+use PHPStan\ShouldNotHappenException;
+use function array_key_exists;
+use function sprintf;
+
+final class UsefulTypeAliasResolver implements TypeAliasResolver
+{
+
+	/** @var array<string, Type> */
+	private array $resolvedGlobalTypeAliases = [];
+
+	/** @var array<string, Type> */
+	private array $resolvedLocalTypeAliases = [];
+
+	/** @var array<string, true> */
+	private array $resolvingClassTypeAliases = [];
+
+	/** @var array<string, true> */
+	private array $inProcess = [];
+
+	/**
+	 * @param array<string, string> $globalTypeAliases
+	 */
+	public function __construct(
+		private array $globalTypeAliases,
+		private TypeStringResolver $typeStringResolver,
+		private TypeNodeResolver $typeNodeResolver,
+		private ReflectionProvider $reflectionProvider,
+	)
+	{
+	}
+
+	public function hasTypeAlias(string $aliasName, ?string $classNameScope): bool
+	{
+		$hasGlobalTypeAlias = array_key_exists($aliasName, $this->globalTypeAliases);
+		if ($hasGlobalTypeAlias) {
+			return true;
+		}
+
+		if ($classNameScope === null || !$this->reflectionProvider->hasClass($classNameScope)) {
+			return false;
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($classNameScope);
+		$localTypeAliases = $classReflection->getTypeAliases();
+		return array_key_exists($aliasName, $localTypeAliases);
+	}
+
+	public function resolveTypeAlias(string $aliasName, NameScope $nameScope): ?Type
+	{
+		return $this->resolveLocalTypeAlias($aliasName, $nameScope)
+			?? $this->resolveGlobalTypeAlias($aliasName, $nameScope);
+	}
+
+	private function resolveLocalTypeAlias(string $aliasName, NameScope $nameScope): ?Type
+	{
+		if (array_key_exists($aliasName, $this->globalTypeAliases)) {
+			return null;
+		}
+
+		if (!$nameScope->hasTypeAlias($aliasName)) {
+			return null;
+		}
+
+		$className = $nameScope->getClassNameForTypeAlias();
+		if ($className === null) {
+			return null;
+		}
+
+		$aliasNameInClassScope = $className . '::' . $aliasName;
+
+		if (array_key_exists($aliasNameInClassScope, $this->resolvedLocalTypeAliases)) {
+			return $this->resolvedLocalTypeAliases[$aliasNameInClassScope];
+		}
+
+		// prevent infinite recursion
+		if (array_key_exists($className, $this->resolvingClassTypeAliases)) {
+			return null;
+		}
+
+		$this->resolvingClassTypeAliases[$className] = true;
+
+		if (!$this->reflectionProvider->hasClass($className)) {
+			unset($this->resolvingClassTypeAliases[$className]);
+			return null;
+		}
+
+		$classReflection = $this->reflectionProvider->getClass($className);
+		$localTypeAliases = $classReflection->getTypeAliases();
+
+		unset($this->resolvingClassTypeAliases[$className]);
+
+		if (!array_key_exists($aliasName, $localTypeAliases)) {
+			return null;
+		}
+
+		if (array_key_exists($aliasNameInClassScope, $this->inProcess)) {
+			// resolve circular reference as ErrorType to make it easier to detect
+			throw new CircularTypeAliasDefinitionException();
+		}
+
+		$this->inProcess[$aliasNameInClassScope] = true;
+
+		try {
+			$unresolvedAlias = $localTypeAliases[$aliasName];
+			$resolvedAliasType = $unresolvedAlias->resolve($this->typeNodeResolver);
+		} catch (CircularTypeAliasDefinitionException) {
+			$resolvedAliasType = new CircularTypeAliasErrorType();
+		}
+
+		$this->resolvedLocalTypeAliases[$aliasNameInClassScope] = $resolvedAliasType;
+		unset($this->inProcess[$aliasNameInClassScope]);
+
+		return $resolvedAliasType;
+	}
+
+	private function resolveGlobalTypeAlias(string $aliasName, NameScope $nameScope): ?Type
+	{
+		if (!array_key_exists($aliasName, $this->globalTypeAliases)) {
+			return null;
+		}
+
+		if (array_key_exists($aliasName, $this->resolvedGlobalTypeAliases)) {
+			return $this->resolvedGlobalTypeAliases[$aliasName];
+		}
+
+		if ($this->reflectionProvider->hasClass($nameScope->resolveStringName($aliasName))) {
+			throw new ShouldNotHappenException(sprintf('Type alias %s already exists as a class.', $aliasName));
+		}
+
+		if (array_key_exists($aliasName, $this->inProcess)) {
+			throw new ShouldNotHappenException(sprintf('Circular definition for type alias %s.', $aliasName));
+		}
+
+		$this->inProcess[$aliasName] = true;
+
+		$aliasTypeString = $this->globalTypeAliases[$aliasName];
+		$aliasType = $this->typeStringResolver->resolve($aliasTypeString);
+		$this->resolvedGlobalTypeAliases[$aliasName] = $aliasType;
+
+		unset($this->inProcess[$aliasName]);
+
+		return $aliasType;
+	}
+
+}
diff --git a/src/Type/ValueOfType.php b/src/Type/ValueOfType.php
new file mode 100644
index 00000000..46592a12
--- /dev/null
+++ b/src/Type/ValueOfType.php
@@ -0,0 +1,104 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\PhpDocParser\Ast\Type\GenericTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Generic\TemplateTypeVariance;
+use PHPStan\Type\Traits\LateResolvableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use function sprintf;
+
+/** @api */
+final class ValueOfType implements CompoundType, LateResolvableType
+{
+
+	use LateResolvableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	public function __construct(private Type $type)
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return $this->type->getReferencedClasses();
+	}
+
+	public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array
+	{
+		return $this->type->getReferencedTemplateTypes($positionVariance);
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self
+			&& $this->type->equals($type->type);
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return sprintf('value-of<%s>', $this->type->describe($level));
+	}
+
+	public function isResolvable(): bool
+	{
+		return !TypeUtils::containsTemplateType($this->type);
+	}
+
+	protected function getResult(): Type
+	{
+		if ($this->type->isEnum()->yes()) {
+			$valueTypes = [];
+			foreach ($this->type->getEnumCases() as $enumCase) {
+				$valueType = $enumCase->getBackingValueType();
+				if ($valueType === null) {
+					continue;
+				}
+
+				$valueTypes[] = $valueType;
+			}
+
+			return TypeCombinator::union(...$valueTypes);
+		}
+
+		return $this->type->getIterableValueType();
+	}
+
+	/**
+	 * @param callable(Type): Type $cb
+	 */
+	public function traverse(callable $cb): Type
+	{
+		$type = $cb($this->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		if (!$right instanceof self) {
+			return $this;
+		}
+
+		$type = $cb($this->type, $right->type);
+
+		if ($this->type === $type) {
+			return $this;
+		}
+
+		return new self($type);
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new GenericTypeNode(new IdentifierTypeNode('value-of'), [$this->type->toPhpDocNode()]);
+	}
+
+}
diff --git a/src/Type/VerbosityLevel.php b/src/Type/VerbosityLevel.php
new file mode 100644
index 00000000..6368ac40
--- /dev/null
+++ b/src/Type/VerbosityLevel.php
@@ -0,0 +1,236 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Type\Accessory\AccessoryArrayListType;
+use PHPStan\Type\Accessory\AccessoryLiteralStringType;
+use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
+use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
+use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
+use PHPStan\Type\Accessory\AccessoryNumericStringType;
+use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
+use PHPStan\Type\Accessory\NonEmptyArrayType;
+use PHPStan\Type\Generic\GenericObjectType;
+use PHPStan\Type\Generic\GenericStaticType;
+use PHPStan\Type\Generic\TemplateType;
+
+final class VerbosityLevel
+{
+
+	private const TYPE_ONLY = 1;
+	private const VALUE = 2;
+	private const PRECISE = 3;
+	private const CACHE = 4;
+
+	/** @var self[] */
+	private static array $registry;
+
+	/**
+	 * @param self::* $value
+	 */
+	private function __construct(private int $value)
+	{
+	}
+
+	/**
+	 * @param self::* $value
+	 */
+	private static function create(int $value): self
+	{
+		self::$registry[$value] ??= new self($value);
+		return self::$registry[$value];
+	}
+
+	/** @return self::* */
+	public function getLevelValue(): int
+	{
+		return $this->value;
+	}
+
+	/** @api */
+	public static function typeOnly(): self
+	{
+		return self::create(self::TYPE_ONLY);
+	}
+
+	/** @api */
+	public static function value(): self
+	{
+		return self::create(self::VALUE);
+	}
+
+	/** @api */
+	public static function precise(): self
+	{
+		return self::create(self::PRECISE);
+	}
+
+	/** @api */
+	public static function cache(): self
+	{
+		return self::create(self::CACHE);
+	}
+
+	public function isTypeOnly(): bool
+	{
+		return $this->value === self::TYPE_ONLY;
+	}
+
+	public function isValue(): bool
+	{
+		return $this->value === self::VALUE;
+	}
+
+	public function isPrecise(): bool
+	{
+		return $this->value === self::PRECISE;
+	}
+
+	/** @api */
+	public static function getRecommendedLevelByType(Type $acceptingType, ?Type $acceptedType = null): self
+	{
+		$moreVerboseCallback = static function (Type $type, callable $traverse) use (&$moreVerbose, &$veryVerbose): Type {
+			if ($type->isCallable()->yes()) {
+				$moreVerbose = true;
+
+				// Keep checking if we need to be very verbose.
+				return $traverse($type);
+			}
+			if ($type->isConstantValue()->yes() && $type->isNull()->no()) {
+				$moreVerbose = true;
+
+				// For ConstantArrayType we need to keep checking if we need to be very verbose.
+				if (!$type->isArray()->no()) {
+					return $traverse($type);
+				}
+
+				return $type;
+			}
+			if (
+				// synced with IntersectionType::describe()
+				$type instanceof AccessoryNonEmptyStringType
+				|| $type instanceof AccessoryNonFalsyStringType
+				|| $type instanceof AccessoryLiteralStringType
+				|| $type instanceof AccessoryNumericStringType
+				|| $type instanceof NonEmptyArrayType
+				|| $type instanceof AccessoryArrayListType
+			) {
+				$moreVerbose = true;
+				return $type;
+			}
+			if (
+				$type instanceof AccessoryLowercaseStringType
+				|| $type instanceof AccessoryUppercaseStringType
+			) {
+				$moreVerbose = true;
+				$veryVerbose = true;
+				return $type;
+			}
+			if ($type instanceof IntegerRangeType) {
+				$moreVerbose = true;
+				return $type;
+			}
+			return $traverse($type);
+		};
+
+		/** @var bool $moreVerbose */
+		$moreVerbose = false;
+		/** @var bool $veryVerbose */
+		$veryVerbose = false;
+		TypeTraverser::map($acceptingType, $moreVerboseCallback);
+
+		if ($veryVerbose) {
+			return self::precise();
+		}
+
+		if ($moreVerbose) {
+			$verbosity = self::value();
+		}
+
+		if ($acceptedType === null) {
+			return $verbosity ?? self::typeOnly();
+		}
+
+		$containsInvariantTemplateType = false;
+		TypeTraverser::map($acceptingType, static function (Type $type, callable $traverse) use (&$containsInvariantTemplateType): Type {
+			if ($type instanceof GenericObjectType || $type instanceof GenericStaticType) {
+				$reflection = $type->getClassReflection();
+				if ($reflection !== null) {
+					$templateTypeMap = $reflection->getTemplateTypeMap();
+					foreach ($templateTypeMap->getTypes() as $templateType) {
+						if (!$templateType instanceof TemplateType) {
+							continue;
+						}
+
+						if (!$templateType->getVariance()->invariant()) {
+							continue;
+						}
+
+						$containsInvariantTemplateType = true;
+						return $type;
+					}
+				}
+			}
+
+			return $traverse($type);
+		});
+
+		if (!$containsInvariantTemplateType) {
+			return $verbosity ?? self::typeOnly();
+		}
+
+		/** @var bool $moreVerbose */
+		$moreVerbose = false;
+		/** @var bool $veryVerbose */
+		$veryVerbose = false;
+		TypeTraverser::map($acceptedType, $moreVerboseCallback);
+
+		if ($veryVerbose) {
+			return self::precise();
+		}
+
+		return $moreVerbose ? self::value() : $verbosity ?? self::typeOnly();
+	}
+
+	/**
+	 * @param callable(): string $typeOnlyCallback
+	 * @param callable(): string $valueCallback
+	 * @param callable(): string|null $preciseCallback
+	 * @param callable(): string|null $cacheCallback
+	 */
+	public function handle(
+		callable $typeOnlyCallback,
+		callable $valueCallback,
+		?callable $preciseCallback = null,
+		?callable $cacheCallback = null,
+	): string
+	{
+		if ($this->value === self::TYPE_ONLY) {
+			return $typeOnlyCallback();
+		}
+
+		if ($this->value === self::VALUE) {
+			return $valueCallback();
+		}
+
+		if ($this->value === self::PRECISE) {
+			if ($preciseCallback !== null) {
+				return $preciseCallback();
+			}
+
+			return $valueCallback();
+		}
+
+		if ($cacheCallback !== null) {
+			return $cacheCallback();
+		}
+
+		if ($preciseCallback !== null) {
+			return $preciseCallback();
+		}
+
+		return $valueCallback();
+	}
+
+}
diff --git a/src/Type/VoidType.php b/src/Type/VoidType.php
new file mode 100644
index 00000000..cc7388a2
--- /dev/null
+++ b/src/Type/VoidType.php
@@ -0,0 +1,273 @@
+<?php 
+
+namespace PHPStan\Type;
+return;
+
+use PHPStan\Php\PhpVersion;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\TrinaryLogic;
+use PHPStan\Type\Traits\FalseyBooleanTypeTrait;
+use PHPStan\Type\Traits\NonArrayTypeTrait;
+use PHPStan\Type\Traits\NonCallableTypeTrait;
+use PHPStan\Type\Traits\NonGeneralizableTypeTrait;
+use PHPStan\Type\Traits\NonGenericTypeTrait;
+use PHPStan\Type\Traits\NonIterableTypeTrait;
+use PHPStan\Type\Traits\NonObjectTypeTrait;
+use PHPStan\Type\Traits\NonOffsetAccessibleTypeTrait;
+use PHPStan\Type\Traits\NonRemoveableTypeTrait;
+use PHPStan\Type\Traits\UndecidedComparisonTypeTrait;
+
+/** @api */
+class VoidType implements Type
+{
+
+	use NonArrayTypeTrait;
+	use NonCallableTypeTrait;
+	use NonIterableTypeTrait;
+	use NonObjectTypeTrait;
+	use NonOffsetAccessibleTypeTrait;
+	use FalseyBooleanTypeTrait;
+	use NonGenericTypeTrait;
+	use UndecidedComparisonTypeTrait;
+	use NonRemoveableTypeTrait;
+	use NonGeneralizableTypeTrait;
+
+	/** @api */
+	public function __construct()
+	{
+	}
+
+	public function getReferencedClasses(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassNames(): array
+	{
+		return [];
+	}
+
+	public function getObjectClassReflections(): array
+	{
+		return [];
+	}
+
+	public function accepts(Type $type, bool $strictTypes): AcceptsResult
+	{
+		if ($type instanceof CompoundType) {
+			return $type->isAcceptedBy($this, $strictTypes);
+		}
+
+		return new AcceptsResult($type->isVoid()->or($type->isNull()), []);
+	}
+
+	public function isSuperTypeOf(Type $type): IsSuperTypeOfResult
+	{
+		if ($type instanceof self) {
+			return IsSuperTypeOfResult::createYes();
+		}
+
+		if ($type instanceof CompoundType) {
+			return $type->isSubTypeOf($this);
+		}
+
+		return IsSuperTypeOfResult::createNo();
+	}
+
+	public function equals(Type $type): bool
+	{
+		return $type instanceof self;
+	}
+
+	public function describe(VerbosityLevel $level): string
+	{
+		return 'void';
+	}
+
+	public function toNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toAbsoluteNumber(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toString(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toInteger(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toFloat(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArray(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toArrayKey(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function toCoercedArgumentType(bool $strictTypes): Type
+	{
+		return new NullType();
+	}
+
+	public function isOffsetAccessLegal(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isNull(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isConstantScalarValue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getConstantScalarTypes(): array
+	{
+		return [];
+	}
+
+	public function getConstantScalarValues(): array
+	{
+		return [];
+	}
+
+	public function isTrue(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFalse(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isBoolean(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isFloat(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isInteger(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNumericString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonEmptyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isNonFalsyString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLiteralString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isLowercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isUppercaseString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function isClassString(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getObjectTypeOrClassStringObjectType(): Type
+	{
+		return new ErrorType();
+	}
+
+	public function isVoid(): TrinaryLogic
+	{
+		return TrinaryLogic::createYes();
+	}
+
+	public function isScalar(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
+	{
+		return new BooleanType();
+	}
+
+	public function traverse(callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function traverseSimultaneously(Type $right, callable $cb): Type
+	{
+		return $this;
+	}
+
+	public function exponentiate(Type $exponent): Type
+	{
+		return new ErrorType();
+	}
+
+	public function getFiniteTypes(): array
+	{
+		return [];
+	}
+
+	public function toPhpDocNode(): TypeNode
+	{
+		return new IdentifierTypeNode('void');
+	}
+
+}
diff --git a/src/autoloadFunctions.php b/src/autoloadFunctions.php
new file mode 100644
index 00000000..b304dd38
--- /dev/null
+++ b/src/autoloadFunctions.php
@@ -0,0 +1,12 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+/**
+ * @return array<int, callable(string): void>
+ */
+function autoloadFunctions(): array // phpcs:ignore Squiz.Functions.GlobalFunction.Found
+{
+	return $GLOBALS['__phpstanAutoloadFunctions'] ?? [];
+}
diff --git a/src/debugScope.php b/src/debugScope.php
new file mode 100644
index 00000000..e0cdbef1
--- /dev/null
+++ b/src/debugScope.php
@@ -0,0 +1,15 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+/**
+ * @phpstan-pure
+ * @return mixed
+ *
+ * @throws void
+ */
+function debugScope() // phpcs:ignore Squiz.Functions.GlobalFunction.Found
+{
+	return null;
+}
diff --git a/src/dumpType.php b/src/dumpType.php
new file mode 100644
index 00000000..0b2463b2
--- /dev/null
+++ b/src/dumpType.php
@@ -0,0 +1,28 @@
+<?php 
+
+namespace PHPStan;
+return;
+
+/**
+ * @phpstan-pure
+ * @param mixed $value
+ * @return mixed
+ *
+ * @throws void
+ */
+function dumpType($value) // phpcs:ignore Squiz.Functions.GlobalFunction.Found
+{
+	return null;
+}
+
+/**
+ * @phpstan-pure
+ * @param mixed $value
+ * @return mixed
+ *
+ * @throws void
+ */
+function dumpPhpDocType($value) // phpcs:ignore Squiz.Functions.GlobalFunction.Found
+{
+	return null;
+}