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 22package com.sun.org.apache.bcel.internal.generic; 23 24import java.io.DataOutputStream; 25import java.io.IOException; 26 27import com.sun.org.apache.bcel.internal.Const; 28import com.sun.org.apache.bcel.internal.ExceptionConst; 29 30/** 31 * INVOKEVIRTUAL - Invoke instance method; dispatch based on class 32 * 33 * <PRE>Stack: ..., objectref, [arg1, [arg2 ...]] -> ...</PRE> 34 * 35 * @version $Id: INVOKEVIRTUAL.java 1747278 2016-06-07 17:28:43Z britter $ 36 * @see 37 * <a href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-6.html#jvms-6.5.invokevirtual"> 38 * The invokevirtual instruction in The Java Virtual Machine Specification</a> 39 */ 40public class INVOKEVIRTUAL extends InvokeInstruction { 41 42 /** 43 * Empty constructor needed for the Class.newInstance() statement in 44 * Instruction.readInstruction(). Not to be used otherwise. 45 */ 46 INVOKEVIRTUAL() { 47 } 48 49 50 public INVOKEVIRTUAL(final int index) { 51 super(Const.INVOKEVIRTUAL, index); 52 } 53 54 55 /** 56 * Dump instruction as byte code to stream out. 57 * @param out Output stream 58 */ 59 @Override 60 public void dump( final DataOutputStream out ) throws IOException { 61 out.writeByte(super.getOpcode()); 62 out.writeShort(super.getIndex()); 63 } 64 65 @Override 66 public Class<?>[] getExceptions() { 67 return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, 68 ExceptionConst.NULL_POINTER_EXCEPTION, 69 ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR, 70 ExceptionConst.ABSTRACT_METHOD_ERROR, 71 ExceptionConst.UNSATISFIED_LINK_ERROR); 72 } 73 74 75 /** 76 * Call corresponding visitor method(s). The order is: 77 * Call visitor methods of implemented interfaces first, then 78 * call methods according to the class hierarchy in descending order, 79 * i.e., the most specific visitXXX() call comes last. 80 * 81 * @param v Visitor object 82 */ 83 @Override 84 public void accept( final Visitor v ) { 85 v.visitExceptionThrower(this); 86 v.visitTypedInstruction(this); 87 v.visitStackConsumer(this); 88 v.visitStackProducer(this); 89 v.visitLoadClass(this); 90 v.visitCPInstruction(this); 91 v.visitFieldOrMethod(this); 92 v.visitInvokeInstruction(this); 93 v.visitINVOKEVIRTUAL(this); 94 } 95} 96