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Java > Open Source Codes > com > jeantessier > classreader > LocalVariable


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 package com.jeantessier.classreader;
34
35 import java.io.*;
36
37 import org.apache.log4j.*;
38
39 public class LocalVariable implements Visitable {
40     private LocalVariableTable_attribute localVariableTable;
41     private int startPC;
42     private int length;
43     private int nameIndex;
44     private int descriptorIndex;
45     private int index;
46
47     public LocalVariable(LocalVariableTable_attribute localVariableTable, DataInputStream in) throws IOException {
48         this.localVariableTable = localVariableTable;
49
50         startPC = in.readUnsignedShort();
51         Logger.getLogger(getClass()).debug("start PC: " + startPC);
52
53         length = in.readUnsignedShort();
54         Logger.getLogger(getClass()).debug("length: " + length);
55
56         nameIndex = in.readUnsignedShort();
57         Logger.getLogger(getClass()).debug("name: " + nameIndex + " (" + getName() + ")");
58
59         descriptorIndex = in.readUnsignedShort();
60         Logger.getLogger(getClass()).debug("descriptor: " + descriptorIndex + " (" + getDescriptor() + ")");
61
62         index = in.readUnsignedShort();
63         Logger.getLogger(getClass()).debug("index: " + index);
64     }
65
66     public LocalVariableTable_attribute getLocalVariableTable() {
67         return localVariableTable;
68     }
69
70     public int getStartPC() {
71         return startPC;
72     }
73
74     public int getLength() {
75         return length;
76     }
77
78     public int getNameIndex() {
79         return nameIndex;
80     }
81
82     public UTF8_info getRawName() {
83         return (UTF8_info) getLocalVariableTable().getClassfile().getConstantPool().get(getNameIndex());
84     }
85
86     public String JavaDoc getName() {
87         return getRawName().toString();
88     }
89
90     public int getDescriptorIndex() {
91         return descriptorIndex;
92     }
93
94     public UTF8_info getRawDescriptor() {
95         return (UTF8_info) getLocalVariableTable().getClassfile().getConstantPool().get(getDescriptorIndex());
96     }
97
98     public String JavaDoc getDescriptor() {
99         return getRawDescriptor().toString();
100     }
101
102     public int getIndex() {
103         return index;
104     }
105
106     public String JavaDoc toString() {
107         return "Local variable " + getDescriptor() + " " + getName();
108     }
109
110     public void accept(Visitor visitor) {
111         visitor.visitLocalVariable(this);
112     }
113 }
114
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