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    1   /*
    2    * Copyright  2000-2004 The Apache Software Foundation
    3    *
    4    *  Licensed under the Apache License, Version 2.0 (the "License");
    5    *  you may not use this file except in compliance with the License.
    6    *  You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   *  Unless required by applicable law or agreed to in writing, software
    11   *  distributed under the License is distributed on an "AS IS" BASIS,
    12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *  See the License for the specific language governing permissions and
    14   *  limitations under the License.
    15   *
    16   */
    17  package org.apache.bcel.generic;
    18
    19  /***
    20   * ARRAYLENGTH -  Get length of array
    21   * <PRE>Stack: ..., arrayref -&gt; ..., length</PRE>
    22   *
    23   * @version $Id: ARRAYLENGTH.java 386056 2006-03-15 11:31:56Z tcurdt $
    24   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
    25   */
    26  public class ARRAYLENGTH extends Instruction implements ExceptionThrower, StackProducer {
    27
    28      /*** Get length of array
    29       */
    30      public ARRAYLENGTH() {
    31          super(org.apache.bcel.Constants.ARRAYLENGTH, (short) 1);
    32      }
    33
    34
    35      /*** @return exceptions this instruction may cause
    36       */
    37      public Class[] getExceptions() {
    38          return new Class[] {
    39              org.apache.bcel.ExceptionConstants.NULL_POINTER_EXCEPTION
    40          };
    41      }
    42
    43
    44      /***
    45       * Call corresponding visitor method(s). The order is:
    46       * Call visitor methods of implemented interfaces first, then
    47       * call methods according to the class hierarchy in descending order,
    48       * i.e., the most specific visitXXX() call comes last.
    49       *
    50       * @param v Visitor object
    51       */
    52      public void accept( Visitor v ) {
    53          v.visitExceptionThrower(this);
    54          v.visitStackProducer(this);
    55          v.visitARRAYLENGTH(this);
    56      }
    57  }