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/*
* 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.peephole;
import proguard.classfile.*;
import proguard.classfile.editor.MethodInvocationFixer;
import proguard.classfile.util.*;
import proguard.classfile.visitor.MemberVisitor;
import proguard.optimize.info.NonPrivateMemberMarker;
/**
* This MemberVisitor makes all class members that it visits private, unless
* they have been marked by a NonPrivateMemberMarker. The invocations of
* privatized methods still have to be fixed.
*
* @see NonPrivateMemberMarker
* @see MethodInvocationFixer
* @author Eric Lafortune
*/
public class MemberPrivatizer
extends SimplifiedVisitor
implements MemberVisitor
{
private final MemberVisitor extraMemberVisitor;
/**
* Creates a new MemberPrivatizer.
*/
public MemberPrivatizer()
{
this(null);
}
/**
* Creates a new MemberPrivatizer.
* @param extraMemberVisitor an optional extra visitor for all privatized
* class members.
*/
public MemberPrivatizer(MemberVisitor extraMemberVisitor)
{
this.extraMemberVisitor = extraMemberVisitor;
}
// Implementations for MemberVisitor.
public void visitProgramField(ProgramClass programClass, ProgramField programField)
{
// Is the field unmarked?
if (NonPrivateMemberMarker.canBeMadePrivate(programField))
{
// Make the field private.
programField.u2accessFlags =
AccessUtil.replaceAccessFlags(programField.u2accessFlags,
ClassConstants.INTERNAL_ACC_PRIVATE);
// Visit the field, if required.
if (extraMemberVisitor != null)
{
extraMemberVisitor.visitProgramField(programClass, programField);
}
}
}
public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
{
// Is the method unmarked?
if (NonPrivateMemberMarker.canBeMadePrivate(programMethod))
{
// Make the method private.
programMethod.u2accessFlags =
AccessUtil.replaceAccessFlags(programMethod.u2accessFlags,
ClassConstants.INTERNAL_ACC_PRIVATE);
// Visit the method, if required.
if (extraMemberVisitor != null)
{
extraMemberVisitor.visitProgramMethod(programClass, programMethod);
}
}
}
}
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