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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.classfile.editor;
import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.annotation.*;
import proguard.classfile.attribute.annotation.visitor.*;
import proguard.classfile.attribute.preverification.*;
import proguard.classfile.attribute.preverification.visitor.*;
import proguard.classfile.attribute.visitor.*;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.instruction.*;
import proguard.classfile.instruction.visitor.InstructionVisitor;
import proguard.classfile.util.SimplifiedVisitor;
import proguard.classfile.visitor.*;
/**
* This ConstantVisitor remaps all possible indices of bootstrap methods
* of the constants that it visits, based on a given index map.
*
* @author Eric Lafortune
*/
public class BootstrapMethodRemapper
extends SimplifiedVisitor
implements ConstantVisitor
{
private int[] constantIndexMap;
/**
* Sets the given mapping of old constant pool entry indexes to their new
* indexes.
*/
public void setConstantIndexMap(int[] constantIndexMap)
{
this.constantIndexMap = constantIndexMap;
}
// Implementations for ConstantVisitor.
public void visitAnyConstant(Clazz clazz, Constant constant) {}
public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant)
{
invokeDynamicConstant.u2bootstrapMethodAttributeIndex =
remapConstantIndex(invokeDynamicConstant.u2bootstrapMethodAttributeIndex);
}
// Small utility methods.
/**
* Returns the new bootstrap method index of the entry at the
* given index.
*/
private int remapConstantIndex(int constantIndex)
{
int remappedConstantIndex = constantIndexMap[constantIndex];
if (remappedConstantIndex < 0)
{
throw new IllegalArgumentException("Can't remap constant index ["+constantIndex+"]");
}
return remappedConstantIndex;
}
}
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