src/main/java/org/apache/bcel/generic/ARRAYLENGTH.java


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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;

/** 
 * ARRAYLENGTH -  Get length of array
 * <PRE>Stack: ..., arrayref -&gt; ..., length</PRE>
 *
 * @version $Id$
 */
public class ARRAYLENGTH extends Instruction implements ExceptionThrower, StackProducer, StackConsumer /* since 6.0 */ {

    /** Get length of array
     */
    public ARRAYLENGTH() {
        super(org.apache.bcel.Const.ARRAYLENGTH, (short) 1);
    }


    /** @return exceptions this instruction may cause
     */
    @Override
    public Class<?>[] getExceptions() {
        return new Class[] {
            ExceptionConst.NULL_POINTER_EXCEPTION
        };
    }


    /**
     * Call corresponding visitor method(s). The order is:
     * Call visitor methods of implemented interfaces first, then
     * call methods according to the class hierarchy in descending order,
     * i.e., the most specific visitXXX() call comes last.
     *
     * @param v Visitor object
     */
    @Override
    public void accept( final Visitor v ) {
        v.visitExceptionThrower(this);
        v.visitStackProducer(this);
        v.visitARRAYLENGTH(this);
    }
}