    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 *
    017 */
    018package org.apache.bcel.generic;
    019
    020import org.apache.bcel.ExceptionConst;
    021
    022/**
    023 * MONITORENTER - Enter monitor for object
    024 * <PRE>Stack: ..., objectref -&gt; ...</PRE>
    025 *
    026 * @version $Id$
    027 */
    028public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer {
    029
    030    public MONITORENTER() {
    031        super(org.apache.bcel.Const.MONITORENTER, (short) 1);
    032    }
    033
    034
    035    @Override
    036    public Class<?>[] getExceptions() {
    037        return new Class[] {
    038            ExceptionConst.NULL_POINTER_EXCEPTION
    039        };
    040    }
    041
    042
    043    /**
    044     * Call corresponding visitor method(s). The order is:
    045     * Call visitor methods of implemented interfaces first, then
    046     * call methods according to the class hierarchy in descending order,
    047     * i.e., the most specific visitXXX() call comes last.
    048     *
    049     * @param v Visitor object
    050     */
    051    @Override
    052    public void accept( final Visitor v ) {
    053        v.visitExceptionThrower(this);
    054        v.visitStackConsumer(this);
    055        v.visitMONITORENTER(this);
    056    }
    057}