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Java > Open Source Codes > proguard > SubclassedClassFilter


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;
22
23 import proguard.classfile.*;
24 import proguard.classfile.visitor.*;
25
26
27 /**
28  * This ClassVisitor delegates all its method calls to another
29  * ClassVisitor, but only for Clazz objects that are being subclassed.
30  *
31  * @author Eric Lafortune
32  */

33 class SubclassedClassFilter
34 implements ClassVisitor
35 {
36     ClassVisitor classVisitor;
37
38
39     public SubclassedClassFilter(ClassVisitor classVisitor)
40     {
41         this.classVisitor = classVisitor;
42     }
43
44
45     // Implementations for ClassVisitor.
46

47     public void visitProgramClass(ProgramClass programClass)
48     {
49         if (programClass.subClasses != null)
50         {
51             classVisitor.visitProgramClass(programClass);
52         }
53     }
54
55
56     public void visitLibraryClass(LibraryClass libraryClass)
57     {
58         if (libraryClass.subClasses != null)
59         {
60             classVisitor.visitLibraryClass(libraryClass);
61         }
62     }
63 }
64
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