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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.bcel.generic;
import org.apache.bcel.ExceptionConst;
/**
* Super class for instructions dealing with array access such as IALOAD.
*
* @version $Id$
*/
public abstract class ArrayInstruction extends Instruction implements ExceptionThrower,
TypedInstruction {
/**
* Empty constructor needed for the Class.newInstance() statement in
* Instruction.readInstruction(). Not to be used otherwise.
*/
ArrayInstruction() {
}
/**
* @param opcode of instruction
*/
protected ArrayInstruction(final short opcode) {
super(opcode, (short) 1);
}
@Override
public Class<?>[] getExceptions() {
return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_ARRAY_EXCEPTION);
}
/** @return type associated with the instruction
*/
@Override
public Type getType( final ConstantPoolGen cp ) {
final short _opcode = super.getOpcode();
switch (_opcode) {
case org.apache.bcel.Const.IALOAD:
case org.apache.bcel.Const.IASTORE:
return Type.INT;
case org.apache.bcel.Const.CALOAD:
case org.apache.bcel.Const.CASTORE:
return Type.CHAR;
case org.apache.bcel.Const.BALOAD:
case org.apache.bcel.Const.BASTORE:
return Type.BYTE;
case org.apache.bcel.Const.SALOAD:
case org.apache.bcel.Const.SASTORE:
return Type.SHORT;
case org.apache.bcel.Const.LALOAD:
case org.apache.bcel.Const.LASTORE:
return Type.LONG;
case org.apache.bcel.Const.DALOAD:
case org.apache.bcel.Const.DASTORE:
return Type.DOUBLE;
case org.apache.bcel.Const.FALOAD:
case org.apache.bcel.Const.FASTORE:
return Type.FLOAT;
case org.apache.bcel.Const.AALOAD:
case org.apache.bcel.Const.AASTORE:
return Type.OBJECT;
default:
throw new ClassGenException("Oops: unknown case in switch" + _opcode);
}
}
}
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