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Add the originating element in LazyMapKeyProxyGenerator.
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Forgetting the originating element was an oversight. Gradle's incremental processing requires originating elements to determine when to reprocess files. This CL fixes `LazyMapKeyProxyGenerator` by extending `SourceFileGenerator`, which takes care of assigning the originating element. In addition, it removes some duplicate code that's already handled in `SourceFileGenerator` (e.g. adding the generated and suppress annotations).

Fixes #4526

RELNOTES=Fixes #4526: Add the originating element in LazyMapKeyProxyGenerator.
PiperOrigin-RevId: 702869366
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bcorso authored and Dagger Team committed Dec 4, 2024
1 parent 384ad08 commit 5fd8ec1
Showing 1 changed file with 20 additions and 44 deletions.
64 changes: 20 additions & 44 deletions java/dagger/internal/codegen/writing/LazyMapKeyProxyGenerator.java
Original file line number Diff line number Diff line change
Expand Up @@ -20,73 +20,49 @@
import static dagger.internal.codegen.binding.MapKeys.KEEP_FIELD_TYPE_FIELD;
import static dagger.internal.codegen.binding.MapKeys.LAZY_CLASS_KEY_NAME_FIELD;
import static dagger.internal.codegen.binding.MapKeys.lazyClassKeyProxyClassName;
import static dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression.CAST;
import static dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression.DEPRECATION;
import static dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression.KOTLIN_INTERNAL;
import static dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression.RAWTYPES;
import static dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression.UNCHECKED;
import static javax.lang.model.element.Modifier.FINAL;
import static javax.lang.model.element.Modifier.PUBLIC;
import static javax.lang.model.element.Modifier.STATIC;

import androidx.room.compiler.processing.XElement;
import androidx.room.compiler.processing.XFiler;
import androidx.room.compiler.processing.XMethodElement;
import androidx.room.compiler.processing.XProcessingEnv;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.squareup.javapoet.AnnotationSpec;
import com.squareup.javapoet.ClassName;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.JavaFile;
import com.squareup.javapoet.TypeSpec;
import dagger.internal.DaggerGenerated;
import dagger.internal.codegen.javapoet.AnnotationSpecs;
import dagger.internal.codegen.javapoet.AnnotationSpecs.Suppression;
import dagger.internal.codegen.base.SourceFileGenerator;
import dagger.internal.codegen.javapoet.TypeNames;
import java.util.Optional;
import javax.inject.Inject;

/**
* Generate a class containing fields that works with proguard rules to support @LazyClassKey
* usages.
*/
public final class LazyMapKeyProxyGenerator {
private static final String GENERATED_COMMENTS = "https://dagger.dev";
private final XProcessingEnv processingEnv;
private final XFiler filer;
public final class LazyMapKeyProxyGenerator extends SourceFileGenerator<XMethodElement> {

@Inject
LazyMapKeyProxyGenerator(XProcessingEnv processingEnv, XFiler filer) {
this.processingEnv = processingEnv;
this.filer = filer;
LazyMapKeyProxyGenerator(XFiler filer, XProcessingEnv processingEnv) {
super(filer, processingEnv);
}

public void generate(XMethodElement element) {
ClassName lazyClassKeyProxyClassName = lazyClassKeyProxyClassName(element);
TypeSpec.Builder typeSpecBuilder =
classBuilder(lazyClassKeyProxyClassName)
.addModifiers(PUBLIC, FINAL)
.addAnnotation(TypeNames.IDENTIFIER_NAME_STRING)
.addAnnotation(DaggerGenerated.class)
.addFields(lazyClassKeyFields(element));
Optional<AnnotationSpec> generatedAnnotation =
Optional.ofNullable(processingEnv.findGeneratedAnnotation())
.map(
annotation ->
AnnotationSpec.builder(annotation.getClassName())
.addMember("value", "$S", "dagger.internal.codegen.LazyClassKeyProcessor")
.addMember("comments", "$S", GENERATED_COMMENTS)
.build());
generatedAnnotation.ifPresent(typeSpecBuilder::addAnnotation);
typeSpecBuilder.addAnnotation(
AnnotationSpecs.suppressWarnings(
ImmutableSet.<Suppression>builder()
.add(UNCHECKED, RAWTYPES, KOTLIN_INTERNAL, CAST, DEPRECATION)
.build()));
@Override
public XElement originatingElement(XMethodElement input) {
return input;
}

@Override
public ImmutableList<TypeSpec.Builder> topLevelTypes(XMethodElement input) {
return ImmutableList.of(lazyClassKeyProxyTypeSpec(input).toBuilder());
}

filer.write(
JavaFile.builder(lazyClassKeyProxyClassName.packageName(), typeSpecBuilder.build()).build(),
XFiler.Mode.Isolating);
private TypeSpec lazyClassKeyProxyTypeSpec(XMethodElement element) {
return classBuilder(lazyClassKeyProxyClassName(element))
.addModifiers(PUBLIC, FINAL)
.addAnnotation(TypeNames.IDENTIFIER_NAME_STRING)
.addFields(lazyClassKeyFields(element))
.build();
}

private static ImmutableList<FieldSpec> lazyClassKeyFields(XMethodElement element) {
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