1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2013 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.constant.visitor;
22
23import proguard.classfile.Clazz;
24import proguard.classfile.attribute.*;
25import proguard.classfile.constant.*;
26import proguard.classfile.util.SimplifiedVisitor;
27
28/**
29 * This ConstantVisitor travels from any method handle constants that it visits
30 * to their methodref constants, and applies a given constant visitor.
31 *
32 * @author Eric Lafortune
33 */
34public class MethodrefTraveler
35extends      SimplifiedVisitor
36implements   ConstantVisitor
37{
38    private ConstantVisitor methodrefConstantVisitor;
39
40
41    /**
42     * Creates a new v that will delegate to the given constant visitor.
43     */
44    public MethodrefTraveler(ConstantVisitor methodrefConstantVisitor)
45    {
46        this.methodrefConstantVisitor = methodrefConstantVisitor;
47    }
48
49
50    // Implementations for ConstantVisitor.
51
52    public void visitAnyConstant(Clazz clazz, Constant constant) {}
53
54
55    public void visitMethodHandleConstant(Clazz clazz, MethodHandleConstant methodHandleConstant)
56    {
57        clazz.constantPoolEntryAccept(methodHandleConstant.u2referenceIndex,
58                                      methodrefConstantVisitor);
59    }
60}
61