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Java > Open Source Codes > gov > nasa > jpf > jvm > bytecode > ArrayInstruction


1 //
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// Copyright (C) 2005 United States Government as represented by the
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// Administrator of the National Aeronautics and Space Administration
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// (NASA). All Rights Reserved.
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//
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// This software is distributed under the NASA Open Source Agreement
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// (NOSA), version 1.3. The NOSA has been approved by the Open Source
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// Initiative. See the file NOSA-1.3-JPF at the top of the distribution
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// directory tree for the complete NOSA document.
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//
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// THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
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// KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
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// LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
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// SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
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// A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
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// THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
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// DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
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//
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package gov.nasa.jpf.jvm.bytecode;
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21 import org.apache.bcel.classfile.ConstantPool;
22
23
24 /**
25  * abstraction for all array instructions
26  */

27 public abstract class ArrayInstruction extends Instruction {
28
29   public ArrayInstruction () {
30   }
31
32   /* define this here since none of the array instructions need to set a
33    * peer. */

34   public void setPeer (org.apache.bcel.generic.Instruction i, ConstantPool cp) {
35   }
36
37
38   /**
39    * return size of array elements in stack words (long,double: 2, all other: 1)
40    * e.g. used to determine where the object reference is on the stack
41    */

42   protected int getElementSize () {
43     return 1;
44   }
45 }
46
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