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.*;
24
25
26/**
27 * This <code>MemberVisitor</code> delegates its visits to another given
28 * <code>MemberVisitor</code>, but only when visiting members of program
29 * classes.
30 *
31 * @author Eric Lafortune
32 */
33public class ProgramMemberFilter implements MemberVisitor
34{
35    private final MemberVisitor memberVisitor;
36
37
38    /**
39     * Creates a new ProgramMemberFilter.
40     * @param memberVisitor     the <code>MemberVisitor</code> to which
41     *                          visits will be delegated.
42     */
43    public ProgramMemberFilter(MemberVisitor memberVisitor)
44    {
45        this.memberVisitor = memberVisitor;
46    }
47
48
49    // Implementations for MemberVisitor.
50
51    public void visitProgramField(ProgramClass programClass, ProgramField programField)
52    {
53        memberVisitor.visitProgramField(programClass, programField);
54    }
55
56
57    public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
58    {
59        memberVisitor.visitProgramMethod(programClass, programMethod);
60    }
61
62
63    public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField)
64    {
65        // Don't delegate visits to library members.
66    }
67
68
69    public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
70    {
71        // Don't delegate visits to library members.
72    }
73}
74