1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.generic; 23 24 import java.io.*; 25 import com.sun.org.apache.bcel.internal.util.ByteSequence; 26 27 /** 28 * JSR_W - Jump to subroutine 29 * 30 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 31 */ 32 public class JSR_W extends JsrInstruction { 33 /** 34 * Empty constructor needed for the Class.newInstance() statement in 35 * Instruction.readInstruction(). Not to be used otherwise. 36 */ 37 JSR_W() {} 38 39 public JSR_W(InstructionHandle target) { 40 super(com.sun.org.apache.bcel.internal.Constants.JSR_W, target); 41 length = 5; 42 } 43 44 /** 45 * Dump instruction as byte code to stream out. 46 * @param out Output stream 47 */ 48 public void dump(DataOutputStream out) throws IOException { 49 index = getTargetOffset(); 50 out.writeByte(opcode); 51 out.writeInt(index); 52 } 53 54 /** 55 * Read needed data (e.g. index) from file. 56 */ 57 protected void initFromFile(ByteSequence bytes, boolean wide) throws IOException 58 { 59 index = bytes.readInt(); 60 length = 5; 61 } 62 63 /** 64 * Call corresponding visitor method(s). The order is: 65 * Call visitor methods of implemented interfaces first, then 66 * call methods according to the class hierarchy in descending order, 67 * i.e., the most specific visitXXX() call comes last. 68 * 69 * @param v Visitor object 70 */ 71 public void accept(Visitor v) { 72 v.visitStackProducer(this); 73 v.visitBranchInstruction(this); 74 v.visitJsrInstruction(this); 75 v.visitJSR_W(this); 76 } 77 }