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Java > Open Source Codes > org > objectweb > asm > attrs > Comment


1 /***
2  * ASM tests
3  * Copyright (c) 2002-2005 France Telecom
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 package org.objectweb.asm.attrs;
31
32 import java.util.Map JavaDoc;
33
34 import org.objectweb.asm.Attribute;
35 import org.objectweb.asm.ByteVector;
36 import org.objectweb.asm.ClassReader;
37 import org.objectweb.asm.ClassWriter;
38 import org.objectweb.asm.Label;
39 import org.objectweb.asm.util.ASMifiable;
40 import org.objectweb.asm.util.Traceable;
41
42 /**
43  * A non standard attribute used for testing purposes.
44  *
45  * @author Eric Bruneton
46  */
47 public class Comment extends Attribute implements ASMifiable, Traceable {
48
49     public Comment() {
50         super("Comment");
51     }
52
53     public boolean isUnknown() {
54         return false;
55     }
56
57     protected Attribute read(
58         final ClassReader cr,
59         final int off,
60         final int len,
61         final char[] buf,
62         final int codeOff,
63         final Label[] labels)
64     {
65
66         return new Comment();
67     }
68
69     protected ByteVector write(
70         final ClassWriter cw,
71         final byte[] code,
72         final int len,
73         final int maxStack,
74         final int maxLocals)
75     {
76         return new ByteVector();
77     }
78
79     public void asmify(
80         final StringBuffer JavaDoc buf,
81         final String JavaDoc varName,
82         final Map JavaDoc labelNames)
83     {
84         buf.append("Attribute ")
85                 .append(varName)
86                 .append(" = new org.objectweb.asm.attrs.Comment();");
87     }
88
89     public void trace(final StringBuffer JavaDoc buf, final Map JavaDoc labelNames) {
90     }
91 }
92
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