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


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.util.SimplifiedVisitor;
24 import proguard.classfile.constant.visitor.ConstantVisitor;
25 import proguard.classfile.constant.*;
26 import proguard.classfile.attribute.annotation.*;
27 import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
28 import proguard.classfile.attribute.*;
29 import proguard.classfile.*;
30
31 /**
32  * This ConstantVisitor and ElementValueVisitor lets a given MemberVisitor
33  * visit all the referenced class members of the elements that it visits.
34  *
35  * @author Eric Lafortune
36  */
37 public class ReferencedMemberVisitor
38 extends SimplifiedVisitor
39 implements ConstantVisitor,
40              ElementValueVisitor
41 {
42     private MemberVisitor memberVisitor;
43
44
45     public ReferencedMemberVisitor(MemberVisitor memberVisitor)
46     {
47         this.memberVisitor = memberVisitor;
48     }
49
50
51     // Implementations for ConstantVisitor.
52
53     public void visitAnyConstant(Clazz clazz, Constant constant) {}
54
55
56     public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
57     {
58         stringConstant.referencedMemberAccept(memberVisitor);
59     }
60
61
62     public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant)
63     {
64         refConstant.referencedMemberAccept(memberVisitor);
65     }
66
67
68     // Implementations for ElementValueVisitor.
69
70     public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue)
71     {
72         elementValue.referencedMethodAccept(memberVisitor);
73     }
74 }
75
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