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Java > Open Source Codes > edu > rice > cs > util > sexp > Empty


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33
34 package edu.rice.cs.util.sexp;
35
36 public class Empty extends SEList {
37  
38   public static final Empty ONLY = new Empty();
39   
40   private Empty() { }
41   
42   public <Ret> Ret accept(SExpVisitor<Ret> v) {
43     return v.forEmpty(this);
44   }
45   public <Ret> Ret accept(SEListVisitor<Ret> v) {
46     return v.forEmpty(this);
47   }
48   
49   protected String JavaDoc toStringHelp() {
50     return ")";
51   }
52   
53   public String JavaDoc toString() {
54     return "()";
55   }
56 }
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