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.optimize.info;
22
23import proguard.classfile.*;
24import proguard.classfile.util.SimplifiedVisitor;
25import proguard.classfile.visitor.*;
26
27/**
28 * This ClassVisitor marks all classes that contain package visible members.
29 *
30 * @author Eric Lafortune
31 */
32public class PackageVisibleMemberContainingClassMarker
33extends      SimplifiedVisitor
34implements   ClassVisitor,
35             MemberVisitor
36{
37    // Implementations for ClassVisitor.
38
39    public void visitAnyClass(Clazz clazz)
40    {
41        // Check the class itself.
42        if ((clazz.getAccessFlags() & ClassConstants.ACC_PUBLIC) == 0)
43        {
44            setPackageVisibleMembers(clazz);
45        }
46        else
47        {
48            // Check the members.
49            clazz.fieldsAccept(this);
50            clazz.methodsAccept(this);
51        }
52    }
53
54
55    // Implementations for MemberVisitor.
56
57    public void visitAnyMember(Clazz clazz, Member member)
58    {
59        if ((member.getAccessFlags() &
60             (ClassConstants.ACC_PRIVATE |
61              ClassConstants.ACC_PUBLIC)) == 0)
62        {
63            setPackageVisibleMembers(clazz);
64        }
65    }
66
67
68    // Small utility methods.
69
70    private static void setPackageVisibleMembers(Clazz clazz)
71    {
72        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
73        if (info != null)
74        {
75            info.setContainsPackageVisibleMembers();
76        }
77    }
78
79
80    public static boolean containsPackageVisibleMembers(Clazz clazz)
81    {
82        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
83        return info == null || info.containsPackageVisibleMembers();
84    }
85}