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Java > Open Source Codes > edu > rice > cs > drjava > model > definitions > reducedmodel > Stutter


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33
34 package edu.rice.cs.drjava.model.definitions.reducedmodel;
35
36 /**
37  * This class represents a special state, passed by some methods that return
38  * states, to indicate that it is necessary to back up one position before
39  * continuing in an iteration over a TokenList. It probably shouldn't exist,
40  * and, hopefully, it would go away if the underlying logic of the reduced
41  * model were refactored.
42  *
43  * @version $Id: Stutter.java 3553 2006-02-20 21:22:09Z rcartwright $
44  */

45 public class Stutter extends ReducedModelState {
46   /** Singleton instance. */
47   public static final Stutter ONLY = new Stutter();
48
49   /** Singleton constructor. */
50   private Stutter() { }
51
52   ReducedModelState update(TokenList.Iterator copyCursor) {
53     if (copyCursor.atStart()) copyCursor.next();
54     return copyCursor.getStateAtCurrent();
55   }
56 }
57
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