001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 */ 018 019package org.apache.bcel.generic; 020 021/** 022 * Denote that a class targets InstructionHandles within an InstructionList. Namely 023 * the following implementers: 024 * 025 * @see BranchHandle 026 * @see LocalVariableGen 027 * @see CodeExceptionGen 028 * @version $Id: InstructionTargeter.java 1747278 2016-06-07 17:28:43Z britter $ 029 */ 030public interface InstructionTargeter { 031 032 /** 033 * Checks whether this targeter targets the specified instruction handle. 034 */ 035 boolean containsTarget(InstructionHandle ih); 036 037 /** 038 * Replaces the target of this targeter from this old handle to the new handle. 039 * 040 * @param old_ih the old handle 041 * @param new_ih the new handle 042 * @throws ClassGenException if old_ih is not targeted by this object 043 */ 044 void updateTarget(InstructionHandle old_ih, InstructionHandle new_ih) throws ClassGenException; 045}