1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.optimize.info;
import proguard.classfile.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.constant.*;
import proguard.classfile.util.SimplifiedVisitor;
import proguard.classfile.visitor.*;
/**
* This ConstantVisitor marks all classes that refer to package visible classes
* or class members.
*
* @author Eric Lafortune
*/
public class PackageVisibleMemberInvokingClassMarker
extends SimplifiedVisitor
implements ConstantVisitor,
ClassVisitor,
MemberVisitor
{
private Clazz referencingClass;
// Implementations for ConstantVisitor.
public void visitAnyConstant(Clazz clazz, Constant constant) {}
public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
{
// Check the referenced class and class member, if any.
if (stringConstant.referencedClass != clazz)
{
referencingClass = clazz;
stringConstant.referencedClassAccept(this);
stringConstant.referencedMemberAccept(this);
}
}
public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant)
{
// Check the referenced class and class member.
if (refConstant.referencedClass != clazz)
{
referencingClass = clazz;
refConstant.referencedClassAccept(this);
refConstant.referencedMemberAccept(this);
}
}
public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
{
// Check the referenced class.
if (classConstant.referencedClass != clazz)
{
referencingClass = clazz;
classConstant.referencedClassAccept(this);
}
}
// Implementations for ClassVisitor.
public void visitAnyClass(Clazz clazz)
{
if ((clazz.getAccessFlags() &
ClassConstants.INTERNAL_ACC_PUBLIC) == 0)
{
setInvokesPackageVisibleMembers(referencingClass);
}
}
// Implementations for MemberVisitor.
public void visitAnyMember(Clazz clazz, Member member)
{
if ((member.getAccessFlags() &
(ClassConstants.INTERNAL_ACC_PUBLIC |
ClassConstants.INTERNAL_ACC_PRIVATE)) == 0)
{
setInvokesPackageVisibleMembers(referencingClass);
}
}
// Small utility methods.
private static void setInvokesPackageVisibleMembers(Clazz clazz)
{
ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
if (info != null)
{
info.setInvokesPackageVisibleMembers();
}
}
public static boolean invokesPackageVisibleMembers(Clazz clazz)
{
ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
return info == null || info.invokesPackageVisibleMembers();
}
}
|