1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 package org.apache.bcel.generic; 20 21 /** 22 * Denote that a class targets InstructionHandles within an InstructionList. Namely 23 * the following implementers: 24 * 25 * @see BranchHandle 26 * @see LocalVariableGen 27 * @see CodeExceptionGen 28 * @version $Id$ 29 */ 30 public interface InstructionTargeter { 31 32 /** 33 * Checks whether this targeter targets the specified instruction handle. 34 */ containsTarget(InstructionHandle ih)35 boolean containsTarget(InstructionHandle ih); 36 37 /** 38 * Replaces the target of this targeter from this old handle to the new handle. 39 * 40 * @param old_ih the old handle 41 * @param new_ih the new handle 42 * @throws ClassGenException if old_ih is not targeted by this object 43 */ updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)44 void updateTarget(InstructionHandle old_ih, InstructionHandle new_ih) throws ClassGenException; 45 } 46