1 package org.apache.bcel.classfile;
2
3 /* ====================================================================
4 * The Apache Software License, Version 1.1
5 *
6 * Copyright (c) 2001 The Apache Software Foundation. All rights
7 * reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution,
22 * if any, must include the following acknowledgment:
23 * "This product includes software developed by the
24 * Apache Software Foundation (http://www.apache.org/)."
25 * Alternately, this acknowledgment may appear in the software itself,
26 * if and wherever such third-party acknowledgments normally appear.
27 *
28 * 4. The names "Apache" and "Apache Software Foundation" and
29 * "Apache BCEL" must not be used to endorse or promote products
30 * derived from this software without prior written permission. For
31 * written permission, please contact apache@apache.org.
32 *
33 * 5. Products derived from this software may not be called "Apache",
34 * "Apache BCEL", nor may "Apache" appear in their name, without
35 * prior written permission of the Apache Software Foundation.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals on behalf of the Apache Software Foundation. For more
53 * information on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57 import org.apache.bcel.Constants;
58 import java.io.*;
59
60 /***
61 * This class is derived from <em>Attribute</em> and denotes that this is a
62 * deprecated method.
63 * It is instantiated from the <em>Attribute.readAttribute()</em> method.
64 *
65 * @version $Id: Deprecated.java,v 1.3 2002/03/11 16:16:35 mdahm Exp $
66 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
67 * @see Attribute
68 */
69 public final class Deprecated extends Attribute {
70 private byte[] bytes;
71
72 /***
73 * Initialize from another object. Note that both objects use the same
74 * references (shallow copy). Use clone() for a physical copy.
75 */
76 public Deprecated(Deprecated c) {
77 this(c.getNameIndex(), c.getLength(), c.getBytes(), c.getConstantPool());
78 }
79
80 /***
81 * @param name_index Index in constant pool to CONSTANT_Utf8
82 * @param length Content length in bytes
83 * @param bytes Attribute contents
84 * @param constant_pool Array of constants
85 */
86 public Deprecated(int name_index, int length, byte[] bytes,
87 ConstantPool constant_pool)
88 {
89 super(Constants.ATTR_DEPRECATED, name_index, length, constant_pool);
90 this.bytes = bytes;
91 }
92
93 /***
94 * Construct object from file stream.
95 * @param name_index Index in constant pool to CONSTANT_Utf8
96 * @param length Content length in bytes
97 * @param file Input stream
98 * @param constant_pool Array of constants
99 * @throws IOException
100 */
101 Deprecated(int name_index, int length, DataInputStream file,
102 ConstantPool constant_pool) throws IOException
103 {
104 this(name_index, length, (byte [])null, constant_pool);
105
106 if(length > 0) {
107 bytes = new byte[length];
108 file.readFully(bytes);
109 System.err.println("Deprecated attribute with length > 0");
110 }
111 }
112
113 /***
114 * Called by objects that are traversing the nodes of the tree implicitely
115 * defined by the contents of a Java class. I.e., the hierarchy of methods,
116 * fields, attributes, etc. spawns a tree of objects.
117 *
118 * @param v Visitor object
119 */
120 public void accept(Visitor v) {
121 v.visitDeprecated(this);
122 }
123
124 /***
125 * Dump source file attribute to file stream in binary format.
126 *
127 * @param file Output file stream
128 * @throws IOException
129 */
130 public final void dump(DataOutputStream file) throws IOException
131 {
132 super.dump(file);
133
134 if(length > 0)
135 file.write(bytes, 0, length);
136 }
137
138 /***
139 * @return data bytes.
140 */
141 public final byte[] getBytes() { return bytes; }
142
143 /***
144 * @param bytes.
145 */
146 public final void setBytes(byte[] bytes) {
147 this.bytes = bytes;
148 }
149
150 /***
151 * @return attribute name
152 */
153 public final String toString() {
154 return Constants.ATTRIBUTE_NAMES[Constants.ATTR_DEPRECATED];
155 }
156
157 /***
158 * @return deep copy of this attribute
159 */
160 public Attribute copy(ConstantPool constant_pool) {
161 Deprecated c = (Deprecated)clone();
162
163 if(bytes != null)
164 c.bytes = (byte[])bytes.clone();
165
166 c.constant_pool = constant_pool;
167 return c;
168 }
169 }
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