dagger.internal.codegen.processingstep.MapKeyProcessingStep Maven / Gradle / Ivy
/*
* Copyright (C) 2014 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.
*/
package dagger.internal.codegen.processingstep;
import static dagger.internal.codegen.binding.MapKeys.getUnwrappedMapKeyType;
import static dagger.internal.codegen.xprocessing.XTypes.isDeclared;
import androidx.room.compiler.processing.XMessager;
import androidx.room.compiler.processing.XType;
import androidx.room.compiler.processing.XTypeElement;
import com.google.common.collect.ImmutableSet;
import com.squareup.javapoet.ClassName;
import dagger.MapKey;
import dagger.internal.codegen.javapoet.TypeNames;
import dagger.internal.codegen.validation.MapKeyValidator;
import dagger.internal.codegen.validation.ValidationReport;
import dagger.internal.codegen.writing.AnnotationCreatorGenerator;
import dagger.internal.codegen.writing.UnwrappedMapKeyGenerator;
import javax.inject.Inject;
/**
* The annotation processor responsible for validating the mapKey annotation and auto-generate
* implementation of annotations marked with {@link MapKey @MapKey} where necessary.
*/
final class MapKeyProcessingStep extends TypeCheckingProcessingStep {
private final XMessager messager;
private final MapKeyValidator mapKeyValidator;
private final AnnotationCreatorGenerator annotationCreatorGenerator;
private final UnwrappedMapKeyGenerator unwrappedMapKeyGenerator;
@Inject
MapKeyProcessingStep(
XMessager messager,
MapKeyValidator mapKeyValidator,
AnnotationCreatorGenerator annotationCreatorGenerator,
UnwrappedMapKeyGenerator unwrappedMapKeyGenerator) {
this.messager = messager;
this.mapKeyValidator = mapKeyValidator;
this.annotationCreatorGenerator = annotationCreatorGenerator;
this.unwrappedMapKeyGenerator = unwrappedMapKeyGenerator;
}
@Override
public ImmutableSet annotationClassNames() {
return ImmutableSet.of(TypeNames.MAP_KEY);
}
@Override
protected void process(XTypeElement mapAnnotation, ImmutableSet annotations) {
ValidationReport mapKeyReport = mapKeyValidator.validate(mapAnnotation);
mapKeyReport.printMessagesTo(messager);
if (mapKeyReport.isClean()) {
if (!mapAnnotation.getAnnotation(TypeNames.MAP_KEY).getAsBoolean("unwrapValue")) {
annotationCreatorGenerator.generate(mapAnnotation, messager);
} else if (isAnnotationType(getUnwrappedMapKeyType(mapAnnotation.getType()))) {
unwrappedMapKeyGenerator.generate(mapAnnotation, messager);
}
}
}
private boolean isAnnotationType(XType type) {
return isDeclared(type) && type.getTypeElement().isAnnotationClass();
}
}