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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2009 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.obfuscate;
import proguard.classfile.*;
import proguard.classfile.constant.ClassConstant;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.editor.ConstantPoolEditor;
import proguard.classfile.util.SimplifiedVisitor;
import proguard.classfile.visitor.*;
/**
* This <code>ClassVisitor</code> renames the class names and class member
* names of the classes it visits, using names previously determined by the
* obfuscator.
*
* @see ClassObfuscator
* @see MemberObfuscator
*
* @author Eric Lafortune
*/
public class ClassRenamer
extends SimplifiedVisitor
implements ClassVisitor,
MemberVisitor,
ConstantVisitor
{
// Implementations for ClassVisitor.
public void visitProgramClass(ProgramClass programClass)
{
// Rename this class.
programClass.thisClassConstantAccept(this);
// Rename the class members.
programClass.fieldsAccept(this);
programClass.methodsAccept(this);
}
public void visitLibraryClass(LibraryClass libraryClass)
{
libraryClass.thisClassName = ClassObfuscator.newClassName(libraryClass);
// Rename the class members.
libraryClass.fieldsAccept(this);
libraryClass.methodsAccept(this);
}
// Implementations for MemberVisitor.
public void visitProgramMember(ProgramClass programClass,
ProgramMember programMember)
{
// Has the class member name changed?
String name = programMember.getName(programClass);
String newName = MemberObfuscator.newMemberName(programMember);
if (newName != null &&
!newName.equals(name))
{
programMember.u2nameIndex =
new ConstantPoolEditor(programClass).addUtf8Constant(newName);
}
}
public void visitLibraryMember(LibraryClass libraryClass,
LibraryMember libraryMember)
{
String newName = MemberObfuscator.newMemberName(libraryMember);
if (newName != null)
{
libraryMember.name = newName;
}
}
// Implementations for ConstantVisitor.
public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
{
// Update the Class entry if required.
String newName = ClassObfuscator.newClassName(clazz);
if (newName != null)
{
// Refer to a new Utf8 entry.
classConstant.u2nameIndex =
new ConstantPoolEditor((ProgramClass)clazz).addUtf8Constant(newName);
}
}
}
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