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.instruction.visitor;
22
23import proguard.classfile.*;
24import proguard.classfile.attribute.CodeAttribute;
25import proguard.classfile.constant.visitor.ConstantVisitor;
26import proguard.classfile.instruction.*;
27import proguard.classfile.util.SimplifiedVisitor;
28
29/**
30 * This AttributeVisitor lets a given ConstantVisitor visit all constants
31 * of the instructions it visits.
32 *
33 * @author Eric Lafortune
34 */
35public class InstructionConstantVisitor
36extends      SimplifiedVisitor
37implements   InstructionVisitor
38{
39    private final ConstantVisitor constantVisitor;
40
41
42    /**
43     * Creates a new InstructionConstantVisitor.
44     * @param constantVisitor the ConstantVisitor to which visits will be
45     *                        delegated.
46     */
47    public InstructionConstantVisitor(ConstantVisitor constantVisitor)
48    {
49        this.constantVisitor = constantVisitor;
50    }
51
52
53    // Implementations for InstructionVisitor.
54
55    public void visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) {}
56
57
58    public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
59    {
60        clazz.constantPoolEntryAccept(constantInstruction.constantIndex,
61                                      constantVisitor);
62    }
63}