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