/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * 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 com.sun.org.apache.bcel.internal.generic;

import com.sun.org.apache.bcel.internal.ExceptionConst;

/**

 * Super class for instructions dealing with array access such as IALOAD.

 *

 */

public abstract class ArrayInstruction extends Instruction implements ExceptionThrower,

        TypedInstruction {

    /**

     */

    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 com.sun.org.apache.bcel.internal.Const.IALOAD:

            case com.sun.org.apache.bcel.internal.Const.IASTORE:

                return Type.INT;

            case com.sun.org.apache.bcel.internal.Const.CALOAD:

            case com.sun.org.apache.bcel.internal.Const.CASTORE:

                return Type.CHAR;

            case com.sun.org.apache.bcel.internal.Const.BALOAD:

            case com.sun.org.apache.bcel.internal.Const.BASTORE:

                return Type.BYTE;

            case com.sun.org.apache.bcel.internal.Const.SALOAD:

            case com.sun.org.apache.bcel.internal.Const.SASTORE:

                return Type.SHORT;

            case com.sun.org.apache.bcel.internal.Const.LALOAD:

            case com.sun.org.apache.bcel.internal.Const.LASTORE:

                return Type.LONG;

            case com.sun.org.apache.bcel.internal.Const.DALOAD:

            case com.sun.org.apache.bcel.internal.Const.DASTORE:

                return Type.DOUBLE;

            case com.sun.org.apache.bcel.internal.Const.FALOAD:

            case com.sun.org.apache.bcel.internal.Const.FASTORE:

                return Type.FLOAT;

            case com.sun.org.apache.bcel.internal.Const.AALOAD:

            case com.sun.org.apache.bcel.internal.Const.AASTORE:

                return Type.OBJECT;

            default:

                throw new ClassGenException("Oops: unknown case in switch" + _opcode);

        }

    }

}