1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 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 */
21package proguard.classfile.visitor;
22
23import proguard.classfile.Clazz;
24import proguard.classfile.attribute.annotation.*;
25import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
26import proguard.classfile.constant.*;
27import proguard.classfile.constant.visitor.ConstantVisitor;
28import proguard.classfile.util.SimplifiedVisitor;
29
30/**
31 * This ConstantVisitor and ElementValueVisitor lets a given MemberVisitor
32 * visit all the referenced class members of the elements that it visits.
33 *
34 * @author Eric Lafortune
35 */
36public class ReferencedMemberVisitor
37extends      SimplifiedVisitor
38implements   ConstantVisitor,
39             ElementValueVisitor
40{
41    private final MemberVisitor memberVisitor;
42
43
44    public ReferencedMemberVisitor(MemberVisitor memberVisitor)
45    {
46        this.memberVisitor = memberVisitor;
47    }
48
49
50    // Implementations for ConstantVisitor.
51
52    public void visitAnyConstant(Clazz clazz, Constant constant) {}
53
54
55    public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
56    {
57        stringConstant.referencedMemberAccept(memberVisitor);
58    }
59
60
61    public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant)
62    {
63        refConstant.referencedMemberAccept(memberVisitor);
64    }
65
66
67    // Implementations for ElementValueVisitor.
68
69    public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue)
70    {
71        elementValue.referencedMethodAccept(memberVisitor);
72    }
73}
74