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69 lines
2.4 KiB
69 lines
2.4 KiB
/*
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* Copyright (C) 2016 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.validation;
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import static dagger.internal.codegen.langmodel.DaggerElements.getAnnotationMirror;
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import static javax.tools.Diagnostic.Kind.ERROR;
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import com.google.auto.common.MoreElements;
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import com.google.common.collect.ImmutableSet;
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import dagger.multibindings.ElementsIntoSet;
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import dagger.multibindings.IntoMap;
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import dagger.multibindings.IntoSet;
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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.ExecutableElement;
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/**
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* Processing step that verifies that {@link IntoSet}, {@link ElementsIntoSet} and {@link IntoMap}
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* are not present on non-binding methods.
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*/
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public final class MultibindingAnnotationsProcessingStep
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extends TypeCheckingProcessingStep<ExecutableElement> {
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private final AnyBindingMethodValidator anyBindingMethodValidator;
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private final Messager messager;
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@Inject
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MultibindingAnnotationsProcessingStep(
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AnyBindingMethodValidator anyBindingMethodValidator, Messager messager) {
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super(MoreElements::asExecutable);
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this.anyBindingMethodValidator = anyBindingMethodValidator;
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this.messager = messager;
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}
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@Override
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public Set<? extends Class<? extends Annotation>> annotations() {
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return ImmutableSet.of(IntoSet.class, ElementsIntoSet.class, IntoMap.class);
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}
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@Override
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protected void process(
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ExecutableElement method, ImmutableSet<Class<? extends Annotation>> annotations) {
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if (!anyBindingMethodValidator.isBindingMethod(method)) {
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annotations.forEach(
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annotation ->
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messager.printMessage(
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ERROR,
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"Multibinding annotations may only be on @Provides, @Produces, or @Binds methods",
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method,
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getAnnotationMirror(method, annotation).get()));
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}
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}
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}
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