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 24 25/** 26 * Super class for instructions dealing with array access such as IALOAD. 27 * 28 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 29 */ 30public abstract class ArrayInstruction extends Instruction 31 implements ExceptionThrower, TypedInstruction { 32 /** 33 * Empty constructor needed for the Class.newInstance() statement in 34 * Instruction.readInstruction(). Not to be used otherwise. 35 */ 36 ArrayInstruction() {} 37 38 /** 39 * @param opcode of instruction 40 */ 41 protected ArrayInstruction(short opcode) { 42 super(opcode, (short)1); 43 } 44 45 public Class[] getExceptions() { 46 return com.sun.org.apache.bcel.internal.ExceptionConstants.EXCS_ARRAY_EXCEPTION; 47 } 48 49 /** @return type associated with the instruction 50 */ 51 public Type getType(ConstantPoolGen cp) { 52 switch(opcode) { 53 case com.sun.org.apache.bcel.internal.Constants.IALOAD: case com.sun.org.apache.bcel.internal.Constants.IASTORE: 54 return Type.INT; 55 case com.sun.org.apache.bcel.internal.Constants.CALOAD: case com.sun.org.apache.bcel.internal.Constants.CASTORE: 56 return Type.CHAR; 57 case com.sun.org.apache.bcel.internal.Constants.BALOAD: case com.sun.org.apache.bcel.internal.Constants.BASTORE: 58 return Type.BYTE; 59 case com.sun.org.apache.bcel.internal.Constants.SALOAD: case com.sun.org.apache.bcel.internal.Constants.SASTORE: 60 return Type.SHORT; 61 case com.sun.org.apache.bcel.internal.Constants.LALOAD: case com.sun.org.apache.bcel.internal.Constants.LASTORE: 62 return Type.LONG; 63 case com.sun.org.apache.bcel.internal.Constants.DALOAD: case com.sun.org.apache.bcel.internal.Constants.DASTORE: 64 return Type.DOUBLE; 65 case com.sun.org.apache.bcel.internal.Constants.FALOAD: case com.sun.org.apache.bcel.internal.Constants.FASTORE: 66 return Type.FLOAT; 67 case com.sun.org.apache.bcel.internal.Constants.AALOAD: case com.sun.org.apache.bcel.internal.Constants.AASTORE: 68 return Type.OBJECT; 69 70 default: throw new ClassGenException("Oops: unknown case in switch" + opcode); 71 } 72 } 73} 74