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 * ARRAYLENGTH -  Get length of array
27 * <PRE>Stack: ..., arrayref -&gt; ..., length</PRE>
28 *
29 * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
30 */
31public class ARRAYLENGTH extends Instruction
32  implements ExceptionThrower, StackProducer {
33  /** Get length of array
34   */
35  public ARRAYLENGTH() {
36    super(com.sun.org.apache.bcel.internal.Constants.ARRAYLENGTH, (short)1);
37  }
38
39  /** @return exceptions this instruction may cause
40   */
41  public Class[] getExceptions() {
42    return new Class[] { com.sun.org.apache.bcel.internal.ExceptionConstants.NULL_POINTER_EXCEPTION };
43  }
44
45
46  /**
47   * Call corresponding visitor method(s). The order is:
48   * Call visitor methods of implemented interfaces first, then
49   * call methods according to the class hierarchy in descending order,
50   * i.e., the most specific visitXXX() call comes last.
51   *
52   * @param v Visitor object
53   */
54  public void accept(Visitor v) {
55    v.visitExceptionThrower(this);
56    v.visitStackProducer(this);
57    v.visitARRAYLENGTH(this);
58  }
59}
60