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Java > Open Source Codes > proguard > classfile > visitor > VariableClassVisitor


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.classfile.visitor;
22
23 import proguard.classfile.*;
24
25
26 /**
27  * This ClassVisitor delegates all method calls to a ClassVisitor
28  * that can be changed at any time.
29  *
30  * @author Eric Lafortune
31  */
32 public class VariableClassVisitor implements ClassVisitor
33 {
34     private ClassVisitor classVisitor;
35
36
37     public VariableClassVisitor()
38     {
39         this(null);
40     }
41
42
43     public VariableClassVisitor(ClassVisitor classVisitor)
44     {
45         this.classVisitor = classVisitor;
46     }
47
48
49     public void setClassVisitor(ClassVisitor classVisitor)
50     {
51         this.classVisitor = classVisitor;
52     }
53
54     public ClassVisitor getClassVisitor()
55     {
56         return classVisitor;
57     }
58
59
60     // Implementations for ClassVisitor.
61
62     public void visitProgramClass(ProgramClass programClass)
63     {
64         if (classVisitor != null)
65         {
66             classVisitor.visitProgramClass(programClass);
67         }
68     }
69
70
71     public void visitLibraryClass(LibraryClass libraryClass)
72     {
73         if (classVisitor != null)
74         {
75             classVisitor.visitLibraryClass(libraryClass);
76         }
77     }
78 }
79
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