| /** |
| * @(#)AnnotationProcessors.java 1.2 04/06/21 |
| * |
| * Copyright 2004 Sun Microsystems, Inc. All rights reserved. |
| * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. |
| */ |
| |
| package com.sun.mirror.apt; |
| |
| import java.util.*; |
| |
| /** |
| * Utilities to create specialized annotation processors. |
| * |
| * @since 1.5 |
| * @author Joseph D. Darcy |
| * @author Scott Seligman |
| */ |
| public class AnnotationProcessors { |
| static class NoOpAP implements AnnotationProcessor { |
| NoOpAP() {} |
| public void process(){} |
| } |
| |
| /** |
| * Combines multiple annotation processors into a simple composite |
| * processor. |
| * The composite processor functions by invoking each of its component |
| * processors in sequence. |
| */ |
| static class CompositeAnnotationProcessor implements AnnotationProcessor { |
| |
| private List<AnnotationProcessor> aps = |
| new LinkedList<AnnotationProcessor>(); |
| |
| /** |
| * Constructs a new composite annotation processor. |
| * @param aps the component annotation processors |
| */ |
| public CompositeAnnotationProcessor(Collection<AnnotationProcessor> aps) { |
| this.aps.addAll(aps); |
| } |
| |
| /** |
| * Constructs a new composite annotation processor. |
| * @param aps the component annotation processors |
| */ |
| public CompositeAnnotationProcessor(AnnotationProcessor... aps) { |
| for(AnnotationProcessor ap: aps) |
| this.aps.add(ap); |
| } |
| |
| /** |
| * Invokes the <tt>process</tt> method of each component processor, |
| * in the order in which the processors were passed to the constructor. |
| */ |
| public void process() { |
| for(AnnotationProcessor ap: aps) |
| ap.process(); |
| } |
| } |
| |
| |
| /** |
| * An annotation processor that does nothing and has no state. |
| * May be used multiple times. |
| * |
| * @since 1.5 |
| */ |
| public final static AnnotationProcessor NO_OP = new NoOpAP(); |
| |
| /** |
| * Constructs a new composite annotation processor. A composite |
| * annotation processor combines multiple annotation processors |
| * into one and functions by invoking each of its component |
| * processors' process methods in sequence. |
| * |
| * @param aps The processors to create a composite of |
| * @since 1.5 |
| */ |
| public static AnnotationProcessor getCompositeAnnotationProcessor(AnnotationProcessor... aps) { |
| return new CompositeAnnotationProcessor(aps); |
| } |
| |
| /** |
| * Constructs a new composite annotation processor. A composite |
| * annotation processor combines multiple annotation processors |
| * into one and functions by invoking each of its component |
| * processors' process methods in the sequence the processors are |
| * returned by the collection's iterator. |
| * |
| * @param aps A collection of processors to create a composite of |
| * @since 1.5 |
| */ |
| public static AnnotationProcessor getCompositeAnnotationProcessor(Collection<AnnotationProcessor> aps) { |
| return new CompositeAnnotationProcessor(aps); |
| } |
| } |
| |
| |
| |