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Java > Open Source Codes > gov > nasa > jpf > jvm > ChoiceGenerator


1 //
2 //Copyright (C) 2005 United States Government as represented by the
3 //Administrator of the National Aeronautics and Space Administration
4 //(NASA). All Rights Reserved.
5 //
6 //This software is distributed under the NASA Open Source Agreement
7 //(NOSA), version 1.3. The NOSA has been approved by the Open Source
8 //Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 //directory tree for the complete NOSA document.
10 //
11 //THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 //KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 //LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 //SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 //A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 //THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 //DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf.jvm;
20
21 /**
22 * abstract root class for configurable choice generators
23 */
24 public abstract class ChoiceGenerator {
25
26     // want the id to be visible to subclasses outside package
27 public String JavaDoc id;
28 int idRef;
29
30 protected ChoiceGenerator (String JavaDoc id) {
31   this.id = id;
32 }
33
34 public String JavaDoc getId () {
35   return id;
36 }
37
38 public int getIdRef () {
39   return idRef;
40 }
41
42 public void setIdRef (int idRef) {
43   this.idRef = idRef;
44 }
45
46 public abstract boolean hasMoreChoices (JVM vm);
47
48 public abstract void advance (JVM vm);
49 }
50
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