| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * 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; |
| } |
| } |