Source Code Cross Referenced for AnnotationNode.java in  » IDE » tIDE » org » objectweb » asm » tree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » tIDE » org.objectweb.asm.tree 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /***
002:         * ASM: a very small and fast Java bytecode manipulation framework
003:         * Copyright (c) 2000-2005 INRIA, France Telecom
004:         * All rights reserved.
005:         *
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions
008:         * are met:
009:         * 1. Redistributions of source code must retain the above copyright
010:         *    notice, this list of conditions and the following disclaimer.
011:         * 2. Redistributions in binary form must reproduce the above copyright
012:         *    notice, this list of conditions and the following disclaimer in the
013:         *    documentation and/or other materials provided with the distribution.
014:         * 3. Neither the name of the copyright holders nor the names of its
015:         *    contributors may be used to endorse or promote products derived from
016:         *    this software without specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
020:         * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
021:         * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
022:         * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
024:         * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
025:         * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
026:         * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
027:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
028:         * THE POSSIBILITY OF SUCH DAMAGE.
029:         */package org.objectweb.asm.tree;
030:
031:        import java.util.ArrayList;
032:        import java.util.List;
033:
034:        import org.objectweb.asm.AnnotationVisitor;
035:
036:        /**
037:         * A node that represents an annotationn.
038:         *
039:         * @author Eric Bruneton
040:         */
041:        @SuppressWarnings("unchecked")
042:        public class AnnotationNode implements  AnnotationVisitor {
043:
044:            /**
045:             * The class descriptor of the annotation class.
046:             */
047:            public String desc;
048:
049:            /**
050:             * The name value pairs of this annotation. Each name value pair is stored
051:             * as two consecutive elements in the list. The name is a {@link String},
052:             * and the value may be a {@link Byte}, {@link Boolean}, {@link Character},
053:             * {@link Short}, {@link Integer}, {@link Long}, {@link Float},
054:             * {@link Double}, {@link String} or {@link org.objectweb.asm.Type}, or an
055:             * two elements String array (for enumeration values), a
056:             * {@link AnnotationNode}, or a {@link List} of values of one of the
057:             * preceding types. The list may be <tt>null</tt> if there is no name
058:             * value pair.
059:             */
060:            public List values;
061:
062:            /**
063:             * Constructs a new {@link AnnotationNode}.
064:             *
065:             * @param desc the class descriptor of the annotation class.
066:             */
067:            public AnnotationNode(final String desc) {
068:                this .desc = desc;
069:            }
070:
071:            /**
072:             * Constructs a new {@link AnnotationNode} to visit an array value.
073:             *
074:             * @param values where the visited values must be stored.
075:             */
076:            AnnotationNode(final List values) {
077:                this .values = values;
078:            }
079:
080:            // ------------------------------------------------------------------------
081:            // Implementation of the AnnotationVisitor interface
082:            // ------------------------------------------------------------------------
083:
084:            public void visit(final String name, final Object value) {
085:                if (values == null) {
086:                    values = new ArrayList(this .desc != null ? 2 : 1);
087:                }
088:                if (this .desc != null) {
089:                    values.add(name);
090:                }
091:                values.add(value);
092:            }
093:
094:            public void visitEnum(final String name, final String desc,
095:                    final String value) {
096:                if (values == null) {
097:                    values = new ArrayList(this .desc != null ? 2 : 1);
098:                }
099:                if (this .desc != null) {
100:                    values.add(name);
101:                }
102:                values.add(new String[] { desc, value });
103:            }
104:
105:            public AnnotationVisitor visitAnnotation(final String name,
106:                    final String desc) {
107:                if (values == null) {
108:                    values = new ArrayList(this .desc != null ? 2 : 1);
109:                }
110:                if (this .desc != null) {
111:                    values.add(name);
112:                }
113:                AnnotationNode annotation = new AnnotationNode(desc);
114:                values.add(annotation);
115:                return annotation;
116:            }
117:
118:            public AnnotationVisitor visitArray(final String name) {
119:                if (values == null) {
120:                    values = new ArrayList(this .desc != null ? 2 : 1);
121:                }
122:                if (this .desc != null) {
123:                    values.add(name);
124:                }
125:                List array = new ArrayList();
126:                values.add(array);
127:                return new AnnotationNode(array);
128:            }
129:
130:            public void visitEnd() {
131:            }
132:
133:            // ------------------------------------------------------------------------
134:            // Accept methods
135:            // ------------------------------------------------------------------------
136:
137:            /**
138:             * Makes the given visitor visit this annotation.
139:             *
140:             * @param av an annotation visitor.
141:             */
142:            public void accept(final AnnotationVisitor av) {
143:                if (values != null) {
144:                    for (int i = 0; i < values.size(); i += 2) {
145:                        String name = (String) values.get(i);
146:                        Object value = values.get(i + 1);
147:                        accept(av, name, value);
148:                    }
149:                }
150:                av.visitEnd();
151:            }
152:
153:            /**
154:             * Makes the given visitor visit a given annotation value.
155:             *
156:             * @param av an annotation visitor.
157:             * @param name the value name.
158:             * @param value the actual value.
159:             */
160:            static void accept(final AnnotationVisitor av, final String name,
161:                    final Object value) {
162:                if (value instanceof  String[]) {
163:                    String[] typeconst = (String[]) value;
164:                    av.visitEnum(name, typeconst[0], typeconst[1]);
165:                } else if (value instanceof  AnnotationNode) {
166:                    AnnotationNode an = (AnnotationNode) value;
167:                    an.accept(av.visitAnnotation(name, an.desc));
168:                } else if (value instanceof  List) {
169:                    AnnotationVisitor v = av.visitArray(name);
170:                    List array = (List) value;
171:                    for (int j = 0; j < array.size(); ++j) {
172:                        accept(v, null, array.get(j));
173:                    }
174:                    v.visitEnd();
175:                } else {
176:                    av.visit(name, value);
177:                }
178:            }
179:        }
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