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


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 import java.util.*;
37
38 import org.apache.log4j.*;
39
40 public class LocalVariableTable_attribute extends Attribute_info {
41     private Collection localVariables = new LinkedList();
42
43     public LocalVariableTable_attribute(Classfile classfile, Visitable owner, DataInputStream in) throws IOException {
44         super(classfile, owner);
45
46         int byteCount = in.readInt();
47         Logger.getLogger(getClass()).debug("Attribute length: " + byteCount);
48
49         int localVariableTableLength = in.readUnsignedShort();
50         Logger.getLogger(getClass()).debug("Reading " + localVariableTableLength + " local variable(s) ...");
51         for (int i=0; i<localVariableTableLength; i++) {
52             Logger.getLogger(getClass()).debug("Local variable " + i + ":");
53             localVariables.add(new LocalVariable(this, in));
54         }
55     }
56
57     public Collection getLocalVariables() {
58         return localVariables;
59     }
60
61     public String JavaDoc toString() {
62         return "Local Variable Table";
63     }
64
65     public void accept(Visitor visitor) {
66         visitor.visitLocalVariableTable_attribute(this);
67     }
68 }
69
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