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
|
/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 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;
import proguard.classfile.*;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.util.*;
/**
* This constant visitor checks whether visited method references try to
* access signatures.
*
* @author Eric Lafortune
*/
public class GetSignatureChecker
extends SimplifiedVisitor
implements ConstantVisitor
{
private final WarningPrinter notePrinter;
/**
* Creates a new GetSignatureChecker.
*/
public GetSignatureChecker(WarningPrinter notePrinter)
{
this.notePrinter = notePrinter;
}
// Implementations for ConstantVisitor.
public void visitAnyConstant(Clazz clazz, Constant constant) {}
public void visitMethodrefConstant(Clazz clazz, MethodrefConstant methodrefConstant)
{
String className = methodrefConstant.getClassName(clazz);
if (className.equals(ClassConstants.NAME_JAVA_LANG_CLASS) ||
className.equals(ClassConstants.NAME_JAVA_LANG_REFLECT_FIELD) ||
className.equals(ClassConstants.NAME_JAVA_LANG_REFLECT_METHOD))
{
String methodName = methodrefConstant.getName(clazz);
if (methodName.startsWith(ClassConstants.METHOD_NAME_GET_TYPE_PREFIX) ||
methodName.startsWith(ClassConstants.METHOD_NAME_GET_GENERIC_PREFIX))
{
notePrinter.print(clazz.getName(),
"Note: " +
ClassUtil.externalClassName(clazz.getName()) +
" calls '" +
ClassUtil.externalShortClassName(ClassUtil.externalClassName(className)) +
"." +
methodName + "'");
}
}
}
}
|