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Generate keep rules for each LazyClassKey referenced class, potential…
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java/dagger/internal/codegen/processingstep/LazyClassKeyProcessingStep.java
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/* | ||
* Copyright (C) 2024 The Dagger Authors. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"); | ||
* you may not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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package dagger.internal.codegen.processingstep; | ||
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import static java.nio.charset.StandardCharsets.UTF_8; | ||
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import androidx.room.compiler.processing.XElement; | ||
import androidx.room.compiler.processing.XFiler; | ||
import androidx.room.compiler.processing.XProcessingEnv; | ||
import androidx.room.compiler.processing.XTypeElement; | ||
import com.google.common.base.Joiner; | ||
import com.google.common.collect.ImmutableList; | ||
import com.google.common.collect.ImmutableSet; | ||
import com.google.common.collect.LinkedHashMultimap; | ||
import com.google.common.collect.SetMultimap; | ||
import com.squareup.javapoet.ClassName; | ||
import dagger.internal.codegen.javapoet.TypeNames; | ||
import dagger.internal.codegen.xprocessing.XElements; | ||
import java.io.BufferedWriter; | ||
import java.io.IOException; | ||
import java.io.OutputStream; | ||
import java.io.OutputStreamWriter; | ||
import java.nio.file.Path; | ||
import java.util.Collection; | ||
import java.util.Map; | ||
import java.util.Set; | ||
import javax.inject.Inject; | ||
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/** Generate keep rules for LazyClassKey referenced classes to prevent class merging. */ | ||
final class LazyClassKeyProcessingStep extends TypeCheckingProcessingStep<XElement> { | ||
private static final String PROGUARD_KEEP_RULE = "-keep,allowobfuscation,allowshrinking class "; | ||
private final SetMultimap<ClassName, ClassName> processedElements = LinkedHashMultimap.create(); | ||
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@Inject | ||
LazyClassKeyProcessingStep() {} | ||
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@Override | ||
public ImmutableSet<ClassName> annotationClassNames() { | ||
return ImmutableSet.of(TypeNames.LAZY_CLASS_KEY); | ||
} | ||
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@Override | ||
protected void process(XElement element, ImmutableSet<ClassName> annotations) { | ||
ClassName lazyClassKey = | ||
element | ||
.getAnnotation(TypeNames.LAZY_CLASS_KEY) | ||
.getAsType("value") | ||
.getTypeElement() | ||
.getClassName(); | ||
XTypeElement moduleElement = XElements.asTypeElement(element.getEnclosingElement()); | ||
processedElements.put(moduleElement.getClassName(), lazyClassKey); | ||
} | ||
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@Override | ||
public void processOver( | ||
XProcessingEnv env, Map<String, ? extends Set<? extends XElement>> elementsByAnnotation) { | ||
super.processOver(env, elementsByAnnotation); | ||
StringBuilder proguardRules = new StringBuilder(); | ||
for (Map.Entry<ClassName, Collection<ClassName>> moduleToLazyClassKeys : | ||
processedElements.asMap().entrySet()) { | ||
String bindingGraphProguardName = | ||
getFullyQualifiedEnclosedClassName(moduleToLazyClassKeys.getKey()) + "_LazyClassKeys.pro"; | ||
for (ClassName lazyClassKey : moduleToLazyClassKeys.getValue()) { | ||
proguardRules.append(PROGUARD_KEEP_RULE).append(lazyClassKey).append("\n"); | ||
} | ||
writeProguardFile(bindingGraphProguardName, proguardRules.toString(), env.getFiler()); | ||
} | ||
} | ||
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private void writeProguardFile(String proguardFileName, String proguardRules, XFiler filer) { | ||
try (OutputStream outputStream = | ||
filer.writeResource( | ||
Path.of("META-INF/proguard/" + proguardFileName), | ||
ImmutableList.<XElement>of(), | ||
XFiler.Mode.Isolating); | ||
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, UTF_8))) { | ||
writer.write(proguardRules); | ||
} catch (IOException e) { | ||
throw new IllegalStateException(e); | ||
} | ||
} | ||
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/** Returns the fully qualified class name, with _ instead of . */ | ||
private static String getFullyQualifiedEnclosedClassName(ClassName className) { | ||
return className.packageName().replace('.', '_') + getEnclosedName(className); | ||
} | ||
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public static String getEnclosedName(ClassName name) { | ||
return Joiner.on('_').join(name.simpleNames()); | ||
} | ||
} |
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-identifiernamestring @dagger.internal.IdentifierNameString class ** { | ||
static java.lang.String *; | ||
} | ||
-keepclassmembers,includedescriptorclasses,allowobfuscation,allowshrinking class * { | ||
@dagger.internal.KeepFieldType <fields>; | ||
} |