94 lines
3.7 KiB
94 lines
3.7 KiB
/*
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* Copyright (C) 2014 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.internal.codegen;
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import static dagger.internal.codegen.binding.MapKeys.getUnwrappedMapKeyType;
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import static javax.lang.model.element.ElementKind.ANNOTATION_TYPE;
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import com.google.auto.common.MoreElements;
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import com.google.auto.common.MoreTypes;
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import com.google.common.collect.ImmutableSet;
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import dagger.MapKey;
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import dagger.internal.codegen.langmodel.DaggerTypes;
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import dagger.internal.codegen.validation.MapKeyValidator;
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import dagger.internal.codegen.validation.TypeCheckingProcessingStep;
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import dagger.internal.codegen.validation.ValidationReport;
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import dagger.internal.codegen.writing.AnnotationCreatorGenerator;
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import dagger.internal.codegen.writing.UnwrappedMapKeyGenerator;
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import java.lang.annotation.Annotation;
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import java.util.Set;
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import javax.annotation.processing.Messager;
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import javax.inject.Inject;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.ElementKind;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.type.DeclaredType;
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/**
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* The annotation processor responsible for validating the mapKey annotation and auto-generate
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* implementation of annotations marked with {@link MapKey @MapKey} where necessary.
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*/
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final class MapKeyProcessingStep extends TypeCheckingProcessingStep<TypeElement> {
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private final Messager messager;
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private final DaggerTypes types;
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private final MapKeyValidator mapKeyValidator;
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private final AnnotationCreatorGenerator annotationCreatorGenerator;
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private final UnwrappedMapKeyGenerator unwrappedMapKeyGenerator;
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@Inject
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MapKeyProcessingStep(
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Messager messager,
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DaggerTypes types,
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MapKeyValidator mapKeyValidator,
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AnnotationCreatorGenerator annotationCreatorGenerator,
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UnwrappedMapKeyGenerator unwrappedMapKeyGenerator) {
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super(MoreElements::asType);
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this.messager = messager;
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this.types = types;
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this.mapKeyValidator = mapKeyValidator;
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this.annotationCreatorGenerator = annotationCreatorGenerator;
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this.unwrappedMapKeyGenerator = unwrappedMapKeyGenerator;
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}
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@Override
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public Set<Class<? extends Annotation>> annotations() {
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return ImmutableSet.<Class<? extends Annotation>>of(MapKey.class);
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}
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@Override
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protected void process(
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TypeElement mapKeyAnnotationType, ImmutableSet<Class<? extends Annotation>> annotations) {
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ValidationReport<Element> mapKeyReport = mapKeyValidator.validate(mapKeyAnnotationType);
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mapKeyReport.printMessagesTo(messager);
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if (mapKeyReport.isClean()) {
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MapKey mapkey = mapKeyAnnotationType.getAnnotation(MapKey.class);
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if (!mapkey.unwrapValue()) {
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annotationCreatorGenerator.generate(mapKeyAnnotationType, messager);
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} else if (unwrappedValueKind(mapKeyAnnotationType).equals(ANNOTATION_TYPE)) {
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unwrappedMapKeyGenerator.generate(mapKeyAnnotationType, messager);
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}
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}
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}
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private ElementKind unwrappedValueKind(TypeElement mapKeyAnnotationType) {
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DeclaredType unwrappedMapKeyType =
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getUnwrappedMapKeyType(MoreTypes.asDeclared(mapKeyAnnotationType.asType()), types);
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return unwrappedMapKeyType.asElement().getKind();
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}
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}
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