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  */
21 package proguard.optimize.info;
22 
23 import proguard.classfile.*;
24 import proguard.classfile.util.SimplifiedVisitor;
25 import proguard.classfile.visitor.*;
26 
27 /**
28  * This ClassVisitor marks all classes that contain package visible members.
29  *
30  * @author Eric Lafortune
31  */
32 public class PackageVisibleMemberContainingClassMarker
33 extends      SimplifiedVisitor
34 implements   ClassVisitor,
35              MemberVisitor
36 {
37     // Implementations for ClassVisitor.
38 
visitAnyClass(Clazz clazz)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 
visitAnyMember(Clazz clazz, Member member)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 
setPackageVisibleMembers(Clazz clazz)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 
containsPackageVisibleMembers(Clazz clazz)80     public static boolean containsPackageVisibleMembers(Clazz clazz)
81     {
82         ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
83         return info == null || info.containsPackageVisibleMembers();
84     }
85 }