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 package org.apache.bcel.generic; 19 20 import java.io.DataOutputStream; 21 import java.io.IOException; 22 23 import org.apache.bcel.Const; 24 import org.apache.bcel.ExceptionConst; 25 26 /** 27 * INVOKESPECIAL - Invoke instance method; special handling for superclass, private 28 * and instance initialization method invocations 29 * 30 * <PRE>Stack: ..., objectref, [arg1, [arg2 ...]] -> ...</PRE> 31 * 32 * @version $Id$ 33 * @see 34 * <a href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-6.html#jvms-6.5.invokespecial"> 35 * The invokespecial instruction in The Java Virtual Machine Specification</a> 36 */ 37 public class INVOKESPECIAL extends InvokeInstruction { 38 39 /** 40 * Empty constructor needed for Instruction.readInstruction. 41 * Not to be used otherwise. 42 */ 43 INVOKESPECIAL() { 44 } 45 46 47 public INVOKESPECIAL(final int index) { 48 super(Const.INVOKESPECIAL, index); 49 } 50 51 52 /** 53 * Dump instruction as byte code to stream out. 54 * @param out Output stream 55 */ 56 @Override 57 public void dump( final DataOutputStream out ) throws IOException { 58 out.writeByte(super.getOpcode()); 59 out.writeShort(super.getIndex()); 60 } 61 62 @Override 63 public Class<?>[] getExceptions() { 64 return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, 65 ExceptionConst.NULL_POINTER_EXCEPTION, 66 ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR, 67 ExceptionConst.ABSTRACT_METHOD_ERROR, 68 ExceptionConst.UNSATISFIED_LINK_ERROR); 69 } 70 71 72 /** 73 * Call corresponding visitor method(s). The order is: 74 * Call visitor methods of implemented interfaces first, then 75 * call methods according to the class hierarchy in descending order, 76 * i.e., the most specific visitXXX() call comes last. 77 * 78 * @param v Visitor object 79 */ 80 @Override 81 public void accept( final Visitor v ) { 82 v.visitExceptionThrower(this); 83 v.visitTypedInstruction(this); 84 v.visitStackConsumer(this); 85 v.visitStackProducer(this); 86 v.visitLoadClass(this); 87 v.visitCPInstruction(this); 88 v.visitFieldOrMethod(this); 89 v.visitInvokeInstruction(this); 90 v.visitINVOKESPECIAL(this); 91 } 92 } 93