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/*
* 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.util.*;
import proguard.classfile.visitor.MemberVisitor;
import java.util.List;
/**
* This class checks if the user has specified non-existent class members.
*
* @author Eric Lafortune
*/
public class ClassMemberChecker
extends SimplifiedVisitor
implements MemberVisitor
{
private final ClassPool programClassPool;
private final WarningPrinter notePrinter;
/**
* Creates a new ClassMemberChecker.
*/
public ClassMemberChecker(ClassPool programClassPool,
WarningPrinter notePrinter)
{
this.programClassPool = programClassPool;
this.notePrinter = notePrinter;
}
/**
* Checks the classes mentioned in the given class specifications, printing
* notes if necessary.
*/
public void checkClassSpecifications(List classSpecifications)
{
if (classSpecifications != null)
{
for (int index = 0; index < classSpecifications.size(); index++)
{
ClassSpecification classSpecification =
(ClassSpecification)classSpecifications.get(index);
String className = classSpecification.className;
if (className != null &&
!containsWildCards(className) &&
notePrinter.accepts(className))
{
Clazz clazz = programClassPool.getClass(className);
if (clazz != null)
{
checkMemberSpecifications(clazz, classSpecification.fieldSpecifications, true);
checkMemberSpecifications(clazz, classSpecification.methodSpecifications, false);
}
}
}
}
}
/**
* Checks the class members mentioned in the given class member
* specifications, printing notes if necessary.
*/
private void checkMemberSpecifications(Clazz clazz,
List memberSpecifications,
boolean isField)
{
if (memberSpecifications != null)
{
String className = clazz.getName();
for (int index = 0; index < memberSpecifications.size(); index++)
{
MemberSpecification memberSpecification =
(MemberSpecification)memberSpecifications.get(index);
String memberName = memberSpecification.name;
String descriptor = memberSpecification.descriptor;
if (memberName != null &&
!containsWildCards(memberName) &&
descriptor != null &&
!containsWildCards(descriptor))
{
if (isField)
{
if (clazz.findField(memberName, descriptor) == null)
{
notePrinter.print(className,
"Note: the configuration refers to the unknown field '" +
ClassUtil.externalFullFieldDescription(0, memberName, descriptor) + "' in class '" +
ClassUtil.externalClassName(className) + "'");
}
}
else
{
if (clazz.findMethod(memberName, descriptor) == null)
{
notePrinter.print(className,
"Note: the configuration refers to the unknown method '" +
ClassUtil.externalFullMethodDescription(className, 0, memberName, descriptor) + "' in class '" +
ClassUtil.externalClassName(className) + "'");
}
}
}
}
}
}
private static boolean containsWildCards(String string)
{
return string != null &&
(string.indexOf('!') >= 0 ||
string.indexOf('*') >= 0 ||
string.indexOf('?') >= 0 ||
string.indexOf(',') >= 0 ||
string.indexOf("///") >= 0);
}
// Implementations for MemberVisitor.
public void visitProgramField(ProgramClass programClass, ProgramField programField)
{
System.out.println(" Maybe you meant the field '" +
ClassUtil.externalFullFieldDescription(0, programField.getName(programClass), programField.getDescriptor(programClass)) + "'?");
}
public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
{
System.out.println(" Maybe you meant the method '" +
ClassUtil.externalFullMethodDescription(programClass.getName(), 0, programMethod.getName(programClass), programMethod.getDescriptor(programClass)) + "'?");
}
}
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