| /******************************************************************************* |
| * Copyright (c) 2005, 2007 BEA Systems, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * mkaufman@bea.com - initial API and implementation |
| * |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.apt.tests.annotations.helloworld; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Collection; |
| |
| import org.eclipse.jdt.apt.tests.annotations.BaseProcessor; |
| |
| import com.sun.mirror.apt.AnnotationProcessorEnvironment; |
| import com.sun.mirror.apt.Filer; |
| import com.sun.mirror.declaration.AnnotationTypeDeclaration; |
| import com.sun.mirror.declaration.Declaration; |
| |
| /** |
| * A processor that looks for HelloWorldAnnotation, and in response |
| * generates a type named in the value of the annotation, containing code |
| * specified in getCode(). |
| */ |
| public class HelloWorldAnnotationProcessor extends BaseProcessor { |
| |
| private final static String PACKAGENAME = "generatedfilepackage"; //$NON-NLS-1$ |
| |
| public HelloWorldAnnotationProcessor(AnnotationProcessorEnvironment env) { |
| super(env); |
| } |
| |
| public void process() |
| { |
| Filer f = _env.getFiler(); |
| AnnotationTypeDeclaration annoDecl = (AnnotationTypeDeclaration) _env.getTypeDeclaration(HelloWorldAnnotation.class.getName()); |
| Collection<Declaration> annotatedDecls = _env.getDeclarationsAnnotatedWith(annoDecl); |
| try { |
| for (Declaration annotatedDecl : annotatedDecls) { |
| String typeName = getTypeName(annotatedDecl); |
| PrintWriter writer = f.createSourceFile( |
| PACKAGENAME + "." + typeName); |
| writer.print(getCode(typeName)); |
| writer.close(); |
| } |
| reportSuccess(this.getClass()); |
| } |
| catch (NullPointerException npe) { |
| reportError(this.getClass(), "Could not read annotation in order to generate text file"); |
| } |
| catch (IOException ioe) { |
| reportError(this.getClass(), "Could not generate text file due to IOException"); |
| } |
| } |
| |
| private String getTypeName(Declaration annotatedDecl) { |
| HelloWorldAnnotation tganno = annotatedDecl.getAnnotation(HelloWorldAnnotation.class); |
| return tganno.value(); |
| } |
| |
| private String getCode(String typeName) { |
| return "package " + PACKAGENAME + ";" + "\n" |
| + "public class "+ typeName + "\n" |
| + "{" + "\n" |
| + " public static void helloWorld()" + "\n" |
| + " {" + "\n" |
| + " System.out.println( \"Hello, world! I am a generated file!\" ); " + "\n" |
| + " }" + "\n" |
| + "}"; |
| } |
| |
| } |