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Java > Open Source Codes > com > yworks > yguard > obf > classfile > ExceptionInfo


1 /**
2  * YGuard -- an obfuscation library for Java(TM) classfiles.
3  *
4  * Original Copyright (c) 1999 Mark Welsh (markw@retrologic.com)
5  * Modifications Copyright (c) 2002 yWorks GmbH (yguard@yworks.com)
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  *
21  * The author may be contacted at yguard@yworks.com
22  *
23  * Java and all Java-based marks are trademarks or registered
24  * trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
25  */
26 package com.yworks.yguard.obf.classfile;
27
28 import java.io.*;
29 import java.util.*;
30
31 /**
32  * Representation of an Exception table entry.
33  *
34  * @author Mark Welsh
35  */
36 public class ExceptionInfo
37 {
38     // Constants -------------------------------------------------------------
39 public static final int CONSTANT_FIELD_SIZE = 8;
40
41
42     // Fields ----------------------------------------------------------------
43 private int u2startpc;
44     private int u2endpc;
45     private int u2handlerpc;
46     private int u2catchType;
47
48
49     // Class Methods ---------------------------------------------------------
50 public static ExceptionInfo create(DataInput din) throws java.io.IOException JavaDoc
51     {
52         ExceptionInfo ei = new ExceptionInfo();
53         ei.read(din);
54         return ei;
55     }
56
57
58     // Instance Methods ------------------------------------------------------
59 private ExceptionInfo() {}
60     private void read(DataInput din) throws java.io.IOException JavaDoc
61     {
62         u2startpc = din.readUnsignedShort();
63         u2endpc = din.readUnsignedShort();
64         u2handlerpc = din.readUnsignedShort();
65         u2catchType = din.readUnsignedShort();
66     }
67
68     /** Export the representation to a DataOutput stream. */
69     public void write(DataOutput dout) throws java.io.IOException JavaDoc
70     {
71         dout.writeShort(u2startpc);
72         dout.writeShort(u2endpc);
73         dout.writeShort(u2handlerpc);
74         dout.writeShort(u2catchType);
75     }
76 }
77
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