| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2011 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.visitor.AttributeVisitor; |
| import proguard.classfile.constant.*; |
| import proguard.classfile.constant.visitor.ConstantVisitor; |
| import proguard.classfile.instruction.*; |
| import proguard.classfile.instruction.visitor.InstructionVisitor; |
| import proguard.classfile.util.*; |
| import proguard.classfile.visitor.*; |
| |
| /** |
| * This MemberVisitor fixes all inappropriate bridge access flags of the |
| * program methods that it visits, checking whether the methods to which they |
| * bridge have the same name. Some compilers, like in Eclipse and in later |
| * versions of JDK 1.6, complain if they can't find the method with the same |
| * name. |
| * |
| * @author Eric Lafortune |
| */ |
| public class BridgeMethodFixer |
| extends SimplifiedVisitor |
| implements MemberVisitor, |
| AttributeVisitor, |
| InstructionVisitor, |
| ConstantVisitor |
| { |
| private static final boolean DEBUG = false; |
| |
| |
| // Return values for the visitor methods. |
| private String bridgedMethodName; |
| |
| |
| // Implementations for MemberVisitor. |
| |
| public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) |
| { |
| if ((programMethod.getAccessFlags() & ClassConstants.INTERNAL_ACC_BRIDGE) != 0) |
| { |
| programMethod.attributesAccept(programClass, this); |
| } |
| } |
| |
| |
| // Implementations for AttributeVisitor. |
| |
| public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} |
| |
| |
| public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) |
| { |
| // Go over the instructions of the bridge method. |
| codeAttribute.instructionsAccept(clazz, method, this); |
| } |
| |
| |
| // Implementations for InstructionVisitor. |
| |
| public void visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) {} |
| |
| |
| public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction) |
| { |
| switch (constantInstruction.opcode) |
| { |
| case InstructionConstants.OP_INVOKEVIRTUAL: |
| case InstructionConstants.OP_INVOKESPECIAL: |
| case InstructionConstants.OP_INVOKESTATIC: |
| case InstructionConstants.OP_INVOKEINTERFACE: |
| // Get the name of the bridged method. |
| clazz.constantPoolEntryAccept(constantInstruction.constantIndex, this); |
| |
| // Check if the name is different. |
| if (!method.getName(clazz).equals(bridgedMethodName)) |
| { |
| if (DEBUG) |
| { |
| System.out.println("BridgeMethodFixer: ["+clazz.getName()+"."+method.getName(clazz)+method.getDescriptor(clazz)+"] does not bridge to ["+bridgedMethodName+"]"); |
| } |
| |
| // Clear the bridge flag. |
| ((ProgramMethod)method).u2accessFlags &= ~ClassConstants.INTERNAL_ACC_BRIDGE; |
| } |
| break; |
| } |
| } |
| |
| |
| // Implementations for ConstantVisitor. |
| |
| public void visitAnyMethodrefConstant(Clazz clazz, RefConstant refConstant) |
| { |
| bridgedMethodName = refConstant.getName(clazz); |
| } |
| } |