Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: src/share/classes/com/sun/tools/javadoc/AnnotationValueImpl.java

src/share/classes/com/sun/tools/javadoc/AnnotationValueImpl.java

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1 /*
2 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package com.sun.tools.javadoc;
27
28
29 import com.sun.javadoc.*;
30
31 import com.sun.tools.javac.code.Attribute;
32 import com.sun.tools.javac.code.Symbol.*;
33 import com.sun.tools.javac.code.Type;
34 import com.sun.tools.javac.code.TypeTags;
35
36
37 /**
38 * Represents a value of an annotation type element.
39 *
40 * @author Scott Seligman
41 * @since 1.5
42 */
43
44 public class AnnotationValueImpl implements AnnotationValue {
45
46 private final DocEnv env;
47 private final Attribute attr;
48
49
50 AnnotationValueImpl(DocEnv env, Attribute attr) {
51 this.env = env;
52 this.attr = attr;
53 }
54
55 /**
56 * Returns the value.
57 * The type of the returned object is one of the following:
58 * <ul><li> a wrapper class for a primitive type
59 * <li> <code>String</code>
60 * <li> <code>Type</code> (representing a class literal)
61 * <li> <code>FieldDoc</code> (representing an enum constant)
62 * <li> <code>AnnotationDesc</code>
63 * <li> <code>AnnotationValue[]</code>
64 * </ul>
65 */
66 public Object value() {
67 ValueVisitor vv = new ValueVisitor();
68 attr.accept(vv);
69 return vv.value;
70 }
71
72 private class ValueVisitor implements Attribute.Visitor {
73 public Object value;
74
75 public void visitConstant(Attribute.Constant c) {
76 if (c.type.tag == TypeTags.BOOLEAN) {
77 // javac represents false and true as integers 0 and 1
78 value = Boolean.valueOf(
79 ((Integer)c.value).intValue() != 0);
80 } else {
81 value = c.value;
82 }
83 }
84
85 public void visitClass(Attribute.Class c) {
86 value = TypeMaker.getType(env,
87 env.types.erasure(c.type));
88 }
89
90 public void visitEnum(Attribute.Enum e) {
91 value = env.getFieldDoc(e.value);
92 }
93
94 public void visitCompound(Attribute.Compound c) {
95 value = new AnnotationDescImpl(env, c);
96 }
97
98 public void visitArray(Attribute.Array a) {
99 AnnotationValue vals[] = new AnnotationValue[a.values.length];
100 for (int i = 0; i < vals.length; i++) {
101 vals[i] = new AnnotationValueImpl(env, a.values[i]);
102 }
103 value = vals;
104 }
105
106 public void visitError(Attribute.Error e) {
107 value = "<error>";
108 }
109 }
110
111 /**
112 * Returns a string representation of the value.
113 *
114 * @return the text of a Java language annotation value expression
115 * whose value is the value of this annotation type element.
116 */
117 public String toString() {
118 ToStringVisitor tv = new ToStringVisitor();
119 attr.accept(tv);
120 return tv.toString();
121 }
122
123 private class ToStringVisitor implements Attribute.Visitor {
124 private final StringBuffer sb = new StringBuffer();
125
126 public String toString() {
127 return sb.toString();
128 }
129
130 public void visitConstant(Attribute.Constant c) {
131 if (c.type.tag == TypeTags.BOOLEAN) {
132 // javac represents false and true as integers 0 and 1
133 sb.append(((Integer)c.value).intValue() != 0);
134 } else {
135 sb.append(FieldDocImpl.constantValueExpression(c.value));
136 }
137 }
138
139 public void visitClass(Attribute.Class c) {
140 sb.append(c);
141 }
142
143 public void visitEnum(Attribute.Enum e) {
144 sb.append(e);
145 }
146
147 public void visitCompound(Attribute.Compound c) {
148 sb.append(new AnnotationDescImpl(env, c));
149 }
150
151 public void visitArray(Attribute.Array a) {
152 // Omit braces from singleton.
153 if (a.values.length != 1) sb.append('{');
154
155 boolean first = true;
156 for (Attribute elem : a.values) {
157 if (first) {
158 first = false;
159 } else {
160 sb.append(", ");
161 }
162 elem.accept(this);
163 }
164 // Omit braces from singleton.
165 if (a.values.length != 1) sb.append('}');
166 }
167
168 public void visitError(Attribute.Error e) {
169 sb.append("<error>");
170 }
171 }
172 }

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