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


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 import proguard.classfile.attribute.CodeAttribute;
25 import proguard.classfile.constant.*;
26 import proguard.classfile.instruction.*;
27 import proguard.classfile.instruction.visitor.InstructionVisitor;
28 import proguard.classfile.util.*;
29 import proguard.classfile.constant.visitor.ConstantVisitor;
30 import proguard.util.ClassNameListMatcher;
31
32
33 /**
34  * This ConstantVisitor lets a given <code>ClassVisitor</code> visit all
35  * constant classes involved in any <code>Class.forName</code> constructs that
36  * it visits.
37  *
38  * @see DotClassClassVisitor
39  *
40  * @author Eric Lafortune
41  */
42 public class ClassForNameClassVisitor
43 extends SimplifiedVisitor
44 implements ConstantVisitor
45 {
46     private ClassVisitor classVisitor;
47
48
49     /**
50      * Creates a new ClassHierarchyTraveler.
51      * @param classVisitor the <code>ClassVisitor</code> to which visits will
52      * be delegated.
53      */
54     public ClassForNameClassVisitor(ClassVisitor classVisitor)
55     {
56         this.classVisitor = classVisitor;
57     }
58
59
60     // Implementations for ConstantVisitor.
61
62     public void visitAnyConstant(Clazz clazz, Constant constant) {}
63
64
65     public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
66     {
67         // Visit the referenced class from the Class.forName construct, if any.
68 stringConstant.referencedClassAccept(classVisitor);
69     }
70 }
71
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