DisallowMixedTypeHintSniff does not report error when attribute #[Ove…

…rride] is presented.

SlevomatCodingStandard/Sniffs/TypeHints/DisallowMixedTypeHintSniff.php

@@ -6,9 +6,15 @@
 use PHP_CodeSniffer\Sniffs\Sniff;
 use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
 use SlevomatCodingStandard\Helpers\AnnotationHelper;
+use SlevomatCodingStandard\Helpers\Attribute;
+use SlevomatCodingStandard\Helpers\AttributeHelper;
 use SlevomatCodingStandard\Helpers\SuppressHelper;
+use SlevomatCodingStandard\Helpers\TokenHelper;
+use function array_map;
+use function in_array;
 use function sprintf;
 use function strtolower;
+use const T_ATTRIBUTE;
 use const T_DOC_COMMENT_OPEN_TAG;
 
 class DisallowMixedTypeHintSniff implements Sniff
@@ -42,6 +48,10 @@ public function process(File $phpcsFile, $docCommentOpenPointer): void
 			return;
 		}
 
+		if ($this->targetHasOverrideAttribute($phpcsFile, $docCommentOpenPointer)) {
+			return;
+		}
+
 		$annotations = AnnotationHelper::getAnnotations($phpcsFile, $docCommentOpenPointer);
 
 		foreach ($annotations as $annotation) {
@@ -69,4 +79,23 @@ private function getSniffName(string $sniffName): string
 		return sprintf('%s.%s', self::NAME, $sniffName);
 	}
 
+	private function targetHasOverrideAttribute(File $phpcsFile, int $docCommentOpenPointer): bool
+	{
+		$tokens = $phpcsFile->getTokens();
+		$nextPointer = TokenHelper::findNextEffective($phpcsFile, $docCommentOpenPointer + 1);
+
+		if ($tokens[$nextPointer]['code'] !== T_ATTRIBUTE) {
+			return false;
+		}
+
+		$attributeNames = array_map(
+			static function (Attribute $name): string {
+				return $name->getName();
+			},
+			AttributeHelper::getAttributes($phpcsFile, $nextPointer)
+		);
+
+		return in_array('Override', $attributeNames, true) || in_array('\Override', $attributeNames, true);
+	}
+
 }

tests/Sniffs/TypeHints/data/disallowMixedTypeHintNoErrors.php

@@ -22,4 +22,28 @@ class Whatever
 	 */
 	private $suppressed;
 
+	/**
+	 * @phpcsSuppress SlevomatCodingStandard.TypeHints.DisallowMixedTypeHint
+	 * @var array<mixed>
+	 */
+	#[Attribute1]
+	public function foo(array $mixed)
+	{
+		return $mixed === true;
+	}
+
+}
+
+class WhateverOverridden extends Whatever
+{
+
+	/**
+	 * @var array<mixed>
+	 */
+	#[\Override]
+	public function foo(array $mixed)
+	{
+		return $mixed === false;
+	}
+
 }