76 lines
2.6 KiB
Java
76 lines
2.6 KiB
Java
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/*
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* * Copyright 2022 Google LLC. All rights reserved.
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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 kapt;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import com.google.auto.service.AutoService;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.UncheckedIOException;
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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.ProcessingEnvironment;
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import javax.annotation.processing.Processor;
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import javax.annotation.processing.RoundEnvironment;
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import javax.annotation.processing.SupportedAnnotationTypes;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.TypeElement;
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/** Simple test processor that numbered classes in rounds as specified in {@link Count}. */
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@AutoService(Processor.class)
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@SupportedAnnotationTypes("*")
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public class AP extends AbstractProcessor {
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private volatile String prefix = "";
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@Override
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public synchronized void init(ProcessingEnvironment processingEnv) {
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super.init(processingEnv);
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prefix = processingEnv.getOptions().getOrDefault("kapt.AP.indexPrefix", "");
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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 boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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for (Element element : roundEnv.getElementsAnnotatedWith(Count.class)) {
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Count c = element.getAnnotation(Count.class);
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if (c.value() > 0) {
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int next = c.value() - 1;
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String simpleName = element.getSimpleName() + "_" + prefix + next;
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try (OutputStream os =
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processingEnv
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.getFiler()
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.createSourceFile("kapt." + simpleName, element)
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.openOutputStream()) {
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os.write(
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String.format("package kapt; @Count(%d) public class %s {}", next, simpleName)
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.getBytes(UTF_8));
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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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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