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/*
* Copyright (C) 2012 Google Inc.
*
* 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 com.google.gson.codegen;
import static java.lang.reflect.Modifier.FINAL;
import java.io.IOException;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.annotation.processing.SupportedSourceVersion;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.tools.Diagnostic;
import javax.tools.JavaFileObject;
@SupportedAnnotationTypes("com.google.gson.codegen.GeneratedTypeAdapter")
@SupportedSourceVersion(SourceVersion.RELEASE_6)
public final class GeneratedTypeAdapterProcessor extends AbstractProcessor {
@Override public boolean process(Set<? extends TypeElement> types, RoundEnvironment env) {
System.out.println("invoked GeneratedTypeAdapterProcessor");
try {
for (Element element : env.getElementsAnnotatedWith(GeneratedTypeAdapter.class)) {
writeAdapter((TypeElement) element);
}
} catch (IOException e) {
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.getMessage());
}
return true;
}
private void writeAdapter(TypeElement type) throws IOException {
String typeAdapterName = CodeGen.adapterName(type, "$TypeAdapter");
JavaFileObject sourceFile = processingEnv.getFiler()
.createSourceFile(typeAdapterName, type);
System.out.println("Generating type adapter: " + typeAdapterName + " in " + sourceFile.getName());
JavaWriter writer = new JavaWriter(sourceFile.openWriter());
writer.addPackage(CodeGen.getPackage(type).getQualifiedName().toString());
writer.beginType(typeAdapterName, "class", FINAL, null);
writer.endType();
writer.close();
}
}
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