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65 lines
2.0 KiB
65 lines
2.0 KiB
/*
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* Copyright (C) 2018 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 com.google.common.base.Joiner;
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import com.google.common.collect.ImmutableSet;
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import java.io.IOException;
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import java.io.Writer;
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import java.util.Set;
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import javax.annotation.processing.AbstractProcessor;
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import javax.annotation.processing.Processor;
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import javax.annotation.processing.RoundEnvironment;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.element.TypeElement;
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/** A simple {@link Processor} that generates one source file. */
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final class GeneratingProcessor extends AbstractProcessor {
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private final String generatedClassName;
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private final String generatedSource;
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private boolean processed;
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GeneratingProcessor(String generatedClassName, String... source) {
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this.generatedClassName = generatedClassName;
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this.generatedSource = Joiner.on("\n").join(source);
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}
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@Override
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public SourceVersion getSupportedSourceVersion() {
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return SourceVersion.latestSupported();
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}
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@Override
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public Set<String> getSupportedAnnotationTypes() {
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return ImmutableSet.of("*");
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}
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@Override
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public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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if (!processed) {
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processed = true;
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try (Writer writer =
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processingEnv.getFiler().createSourceFile(generatedClassName).openWriter()) {
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writer.append(generatedSource);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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return false;
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}
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}
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