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 */ 018package org.apache.bcel.generic; 019 020import java.io.DataOutputStream; 021import java.io.IOException; 022 023import org.apache.bcel.Const; 024import org.apache.bcel.ExceptionConst; 025 026/** 027 * INVOKESPECIAL - Invoke instance method; special handling for superclass, private 028 * and instance initialization method invocations 029 * 030 * <PRE>Stack: ..., objectref, [arg1, [arg2 ...]] -> ...</PRE> 031 * 032 * @see 033 * <a href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-6.html#jvms-6.5.invokespecial"> 034 * The invokespecial instruction in The Java Virtual Machine Specification</a> 035 */ 036public class INVOKESPECIAL extends InvokeInstruction { 037 038 /** 039 * Empty constructor needed for Instruction.readInstruction. 040 * Not to be used otherwise. 041 */ 042 INVOKESPECIAL() { 043 } 044 045 046 public INVOKESPECIAL(final int index) { 047 super(Const.INVOKESPECIAL, index); 048 } 049 050 051 /** 052 * Dump instruction as byte code to stream out. 053 * @param out Output stream 054 */ 055 @Override 056 public void dump( final DataOutputStream out ) throws IOException { 057 out.writeByte(super.getOpcode()); 058 out.writeShort(super.getIndex()); 059 } 060 061 @Override 062 public Class<?>[] getExceptions() { 063 return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, 064 ExceptionConst.NULL_POINTER_EXCEPTION, 065 ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR, 066 ExceptionConst.ABSTRACT_METHOD_ERROR, 067 ExceptionConst.UNSATISFIED_LINK_ERROR); 068 } 069 070 071 /** 072 * Call corresponding visitor method(s). The order is: 073 * Call visitor methods of implemented interfaces first, then 074 * call methods according to the class hierarchy in descending order, 075 * i.e., the most specific visitXXX() call comes last. 076 * 077 * @param v Visitor object 078 */ 079 @Override 080 public void accept( final Visitor v ) { 081 v.visitExceptionThrower(this); 082 v.visitTypedInstruction(this); 083 v.visitStackConsumer(this); 084 v.visitStackProducer(this); 085 v.visitLoadClass(this); 086 v.visitCPInstruction(this); 087 v.visitFieldOrMethod(this); 088 v.visitInvokeInstruction(this); 089 v.visitINVOKESPECIAL(this); 090 } 091}