duke@1: /*
ohair@554:  * Copyright (c) 2004, 2007, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
duke@1:  * published by the Free Software Foundation.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: 
duke@1: import com.sun.mirror.apt.*;
duke@1: import com.sun.mirror.declaration.*;
duke@1: import com.sun.mirror.type.*;
duke@1: import com.sun.mirror.util.*;
duke@1: 
duke@1: import java.util.Collection;
duke@1: import java.util.Set;
duke@1: import java.util.Arrays;
duke@1: import java.util.Collections;
duke@1: import java.io.*;
duke@1: 
duke@1: public class PhantomTouch implements AnnotationProcessorFactory {
duke@1:     static class PhantomTouchProc implements AnnotationProcessor {
duke@1:         AnnotationProcessorEnvironment ape;
duke@1:         PhantomTouchProc(AnnotationProcessorEnvironment ape) {
duke@1:             this.ape = ape;
duke@1:         }
duke@1: 
duke@1:         public void process() {
duke@1:             // Only run the processor on the initial apt invocation
duke@1:             if (ape.getSpecifiedTypeDeclarations().size() == 0) {
duke@1:                 boolean result;
duke@1:                 try {
duke@1:                     // Create temporary file
duke@1:                     java.io.File f = new java.io.File("touched");
duke@1:                     result = f.createNewFile();
duke@1: 
duke@1:                     if (result) {
duke@1:                         // Create new source file
duke@1:                         PrintWriter pw = ape.getFiler().createSourceFile("HelloWorld");
duke@1:                         pw.println("public class HelloWorld {");
duke@1:                         pw.println("  // Phantom hello world");
duke@1:                         pw.println("  public static void main(String argv[]) {");
duke@1:                         pw.println("    System.out.println(\"Hello World\");");
duke@1:                         pw.println("  }");
duke@1:                         pw.println("}");
duke@1:                     } else
duke@1:                         throw new RuntimeException("touched file already exists!");
duke@1:                 } catch (java.io.IOException e) {
duke@1:                     result = false;
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     static final Collection<String> supportedOptions;
duke@1:     static final Collection<String> supportedTypes;
duke@1: 
duke@1:     static {
duke@1:         String options[] = {""};
duke@1:         supportedOptions = Collections.unmodifiableCollection(Arrays.asList(options));
duke@1: 
duke@1:         String types[] = {"*"};
duke@1:         supportedTypes = Collections.unmodifiableCollection(Arrays.asList(types));
duke@1:     }
duke@1: 
duke@1:     public Collection<String> supportedAnnotationTypes() {return supportedTypes;}
duke@1:     public Collection<String> supportedOptions() {return supportedOptions;}
duke@1: 
duke@1: 
duke@1:     /*
duke@1:      * Return the same processor independent of what annotations are
duke@1:      * present, if any.
duke@1:      */
duke@1:     public AnnotationProcessor getProcessorFor(Set<AnnotationTypeDeclaration> atds,
duke@1:                                         AnnotationProcessorEnvironment env) {
duke@1:         return new PhantomTouchProc(env);
duke@1:     }
duke@1: }