1
2 package org.apache.bcel.classfile;
3
4 /* ====================================================================
5 * The Apache Software License, Version 1.1
6 *
7 * Copyright (c) 2001 The Apache Software Foundation. All rights
8 * reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
20 * distribution.
21 *
22 * 3. The end-user documentation included with the redistribution,
23 * if any, must include the following acknowledgment:
24 * "This product includes software developed by the
25 * Apache Software Foundation (http://www.apache.org/)."
26 * Alternately, this acknowledgment may appear in the software itself,
27 * if and wherever such third-party acknowledgments normally appear.
28 *
29 * 4. The names "Apache" and "Apache Software Foundation" and
30 * "Apache BCEL" must not be used to endorse or promote products
31 * derived from this software without prior written permission. For
32 * written permission, please contact apache@apache.org.
33 *
34 * 5. Products derived from this software may not be called "Apache",
35 * "Apache BCEL", nor may "Apache" appear in their name, without
36 * prior written permission of the Apache Software Foundation.
37 *
38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
39 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
44 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
45 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
46 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
48 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 * SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This software consists of voluntary contributions made by many
53 * individuals on behalf of the Apache Software Foundation. For more
54 * information on the Apache Software Foundation, please see
55 * <http://www.apache.org/>.
56 */
57
58
59 import org.apache.bcel.Constants;
60 import java.io.*;
61
62 /***
63 * This class is derived from the abstract
64 * <A HREF="org.apache.bcel.classfile.Constant.html">Constant</A> class
65 * and represents a reference to an int object.
66 *
67 * @version $Id: ConstantInteger.java,v 1.2 2002/03/11 16:16:35 mdahm Exp $
68 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
69 * @see Constant
70 */
71 public final class ConstantInteger extends Constant implements ConstantObject {
72 private int bytes;
73
74 /***
75 * @param bytes Data
76 */
77 public ConstantInteger(int bytes)
78 {
79 super(Constants.CONSTANT_Integer);
80 this.bytes = bytes;
81 }
82
83 /***
84 * Initialize from another object.
85 */
86 public ConstantInteger(ConstantInteger c) {
87 this(c.getBytes());
88 }
89
90 /***
91 * Initialize instance from file data.
92 *
93 * @param file Input stream
94 * @throws IOException
95 */
96 ConstantInteger(DataInputStream file) throws IOException
97 {
98 this(file.readInt());
99 }
100
101 /***
102 * Called by objects that are traversing the nodes of the tree implicitely
103 * defined by the contents of a Java class. I.e., the hierarchy of methods,
104 * fields, attributes, etc. spawns a tree of objects.
105 *
106 * @param v Visitor object
107 */
108 public void accept(Visitor v) {
109 v.visitConstantInteger(this);
110 }
111
112 /***
113 * Dump constant integer to file stream in binary format.
114 *
115 * @param file Output file stream
116 * @throws IOException
117 */
118 public final void dump(DataOutputStream file) throws IOException
119 {
120 file.writeByte(tag);
121 file.writeInt(bytes);
122 }
123
124 /***
125 * @return data, i.e., 4 bytes.
126 */
127 public final int getBytes() { return bytes; }
128
129 /***
130 * @param bytes.
131 */
132 public final void setBytes(int bytes) {
133 this.bytes = bytes;
134 }
135
136 /***
137 * @return String representation.
138 */
139 public final String toString() {
140 return super.toString() + "(bytes = " + bytes + ")";
141 }
142
143 /*** @return Integer object
144 */
145 public Object getConstantValue(ConstantPool cp) {
146 return new Integer(bytes);
147 }
148 }
This page was automatically generated by Maven