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Java > Open Source Codes > jbet > CpClass


1 /*
2  * JBET - Java Binary Enhancement Tool
3  * Copyright (c) 2003 Networks Associates Technology, Inc.
4  *
5  * This software was developed under DARPA/SPAWAR contract
6  * N66001-00-C-8602 "SPMA" as part of the
7  * DARPA OASIS research program.
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  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in the
16  * documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * 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 AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30
31 /**
32  * Represent a class record in the constant pool. There is a CpClass
33  * record for every class referenced within a class file.
34  *
35  * $Id: CpClass.java,v 1.4 2003/09/09 17:31:53 areisse Exp $
36  *
37  * @author Larry D'Anna
38  * @author Lee Badger
39  * @version 0.1
40  */
41 package jbet;
42 import java.io.*;
43
44 class CpClass extends CpEntry {
45     int nameIndex = -1;
46     String JavaDoc str;
47
48     public String JavaDoc toString() {
49     return string();
50     }
51
52     public String JavaDoc string() {
53     return str;
54     }
55     
56     CpClass(int i, CPInterface cp, int ni) {
57     super(i, CPInterface.CONSTANT_Class, cp);
58     nameIndex = ni;
59     }
60
61     CpClass(int i, CPInterface cp) {
62     super(i, CPInterface.CONSTANT_Class, cp);
63     }
64
65     CpClass(CPInterface cp, String JavaDoc s) {
66     super(cp.poolCount(), CPInterface.CONSTANT_Class, cp);
67     str = s;
68     }
69     
70     void setup() throws ClassFileException {
71     if (str==null);
72         str = constantPool.cpUtf8At(nameIndex).string;
73     }
74
75     public boolean equals(Object JavaDoc o) {
76     if (!(o instanceof CpClass))
77         return false;
78     return toString().equals( o.toString() );
79     }
80
81     public int hashCode() {
82     return string().hashCode() + 1;
83     }
84
85     boolean isAnon() {
86     return Util.isAnon(string());
87     }
88
89     void write(DataOutputStream dataOut) throws IOException {
90     dataOut.writeByte(tag);
91     dataOut.writeShort(nameIndex);
92     }
93
94 }
95
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