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


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 Line Number table entry.
33  *
34  * @author Mark Welsh
35  */
36 public class LineNumberInfo
37 {
38     // Constants -------------------------------------------------------------
39
40
41     // Fields ----------------------------------------------------------------
42 private int u2startpc;
43     private int u2lineNumber;
44
45     public LineNumberInfo(int startPC, int lineNumber) {
46         setLineNumber(lineNumber);
47         setStartPC(startPC);
48     }
49
50
51   // Class Methods ---------------------------------------------------------
52 public static LineNumberInfo create(DataInput din) throws java.io.IOException JavaDoc
53     {
54         LineNumberInfo lni = new LineNumberInfo();
55         lni.read(din);
56         return lni;
57     }
58     
59     public void setLineNumber(int number){
60       this.u2lineNumber = number;
61     }
62     
63     public int getLineNumber(){
64       return this.u2lineNumber;
65     }
66     
67     public int getStartPC(){
68       return this.u2startpc;
69     }
70     
71     public void setStartPC(int startPc){
72       this.u2startpc = startPc;
73     }
74
75
76     // Instance Methods ------------------------------------------------------
77 public LineNumberInfo() {}
78     private void read(DataInput din) throws java.io.IOException JavaDoc
79     {
80         u2startpc = din.readUnsignedShort();
81         u2lineNumber = din.readUnsignedShort();
82     }
83
84     /** Export the representation to a DataOutput stream. */
85     public void write(DataOutput dout) throws java.io.IOException JavaDoc
86     {
87         dout.writeShort(u2startpc);
88         dout.writeShort(u2lineNumber);
89     }
90 }
91
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