001 /*
002 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package com.sun.tools.apt.mirror.declaration;
027
028
029 import java.util.Collection;
030 import java.util.ArrayList;
031
032 import com.sun.mirror.declaration.*;
033 import com.sun.mirror.util.SourcePosition;
034 import com.sun.tools.apt.mirror.AptEnv;
035 import com.sun.tools.javac.code.Attribute;
036 import com.sun.tools.javac.code.Symbol.*;
037 import com.sun.tools.javac.code.TypeTags;
038
039
040 /**
041 * Implementation of AnnotationValue
042 */
043
044 public class AnnotationValueImpl implements AnnotationValue {
045
046 protected final AptEnv env;
047 protected final Attribute attr;
048 protected final AnnotationMirrorImpl annotation;
049
050 AnnotationValueImpl(AptEnv env, Attribute attr, AnnotationMirrorImpl annotation) {
051 this.env = env;
052 this.attr = attr;
053 this.annotation = annotation;
054 }
055
056
057 /**
058 * {@inheritDoc}
059 */
060 public String toString() {
061 StringBuilder sb = new StringBuilder();
062 Constants.Formatter fmtr = Constants.getFormatter(sb);
063
064 fmtr.append(getValue());
065 return fmtr.toString();
066 }
067
068 /**
069 * {@inheritDoc}
070 */
071 public Object getValue() {
072 ValueVisitor vv = new ValueVisitor();
073 attr.accept(vv);
074 return vv.value;
075 }
076
077
078 public SourcePosition getPosition() {
079 // Imprecise implementation; just return position of enclosing
080 // annotation.
081 return (annotation == null) ? null : annotation.getPosition();
082 }
083
084 private class ValueVisitor implements Attribute.Visitor {
085
086 public Object value;
087
088 public void visitConstant(Attribute.Constant c) {
089 value = Constants.decodeConstant(c.value, c.type);
090 }
091
092 public void visitClass(Attribute.Class c) {
093 value = env.typeMaker.getType(
094 env.jctypes.erasure(c.type));
095 }
096
097 public void visitEnum(Attribute.Enum e) {
098 value = env.declMaker.getFieldDeclaration(e.value);
099 }
100
101 public void visitCompound(Attribute.Compound c) {
102 value = new AnnotationMirrorImpl(env, c,
103 (annotation == null) ?
104 null :
105 annotation.getDeclaration());
106 }
107
108 public void visitArray(Attribute.Array a) {
109 ArrayList<AnnotationValue> vals =
110 new ArrayList<AnnotationValue>(a.values.length);
111 for (Attribute elem : a.values) {
112 vals.add(new AnnotationValueImpl(env, elem, annotation));
113 }
114 value = vals;
115 }
116
117 public void visitError(Attribute.Error e) {
118 value = "<error>"; // javac will already have logged an error msg
119 }
120 }
121 }