dagger.internal.codegen.BindingMethodProcessingStep.java Source code

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Here is the source code for dagger.internal.codegen.BindingMethodProcessingStep.java

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/*
 * Copyright (C) 2016 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;

import static com.google.common.base.Preconditions.checkArgument;
import static javax.lang.model.util.ElementFilter.methodsIn;

import com.google.auto.common.BasicAnnotationProcessor.ProcessingStep;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.SetMultimap;
import java.lang.annotation.Annotation;
import java.util.Set;
import javax.annotation.processing.Messager;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;

/** A step that validates all binding methods that were not validated while processing modules. */
final class BindingMethodProcessingStep implements BasicProcessor.ProcessingStep {

    private final Messager messager;
    private final AnyBindingMethodValidator anyBindingMethodValidator;

    BindingMethodProcessingStep(Messager messager, AnyBindingMethodValidator anyBindingMethodValidator) {
        this.messager = messager;
        this.anyBindingMethodValidator = anyBindingMethodValidator;
    }

    @Override
    public Set<? extends Class<? extends Annotation>> annotations() {
        return anyBindingMethodValidator.methodAnnotations();
    }

    @Override
    public Set<Element> process(SetMultimap<Class<? extends Annotation>, Element> elementsByAnnotation,
            boolean anyElementsRejected) {
        for (ExecutableElement method : methodsIn(elementsByAnnotation.values())) {
            checkArgument(anyBindingMethodValidator.isBindingMethod(method), "%s is not annotated with any of %s",
                    method, annotations());
            if (!anyBindingMethodValidator.wasAlreadyValidated(method)) {
                anyBindingMethodValidator.validate(method).printMessagesTo(messager);
            }
        }
        return ImmutableSet.of();
    }
}