FunctionTable


1   /*****************************************************************************
2   
3   JEP - Java Math Expression Parser 2.3.0
4         October 3 2004
5         (c) Copyright 2004, Nathan Funk and Richard Morris
6         See LICENSE.txt for license information.
7   
8   *****************************************************************************/
9   package org.nfunk.jep;
10  import java.util.Hashtable  ;
11  import org.nfunk.jep.function.PostfixMathCommandI;
12  public class FunctionTable extends Hashtable  
13  {
14      public FunctionTable()
15      {
16          
17      }
18      
19      /** adds the PostfixMathCommandI for the function with name s. 
20       * RJM addition Oct 03
21       */
22      public Object   put(String   s,PostfixMathCommandI pfmc)
23      {
24          return super.put(s,pfmc);
25      }
26      
27      /** overrides the standard hashtable method.
28       * If the arguments are of the wrong type then throws
29       * ClassCastException
30       * RJM addition Oct 03
31       * TODO is Hashtable always index by Strings?
32       */
33      public Object   put(Object   o,Object   p) 
34      {
35          return put((String  ) o,(PostfixMathCommandI) p); 
36      }
37      
38      /** returns the PostfixMathCommandI for function with name s. 
39       * RJM addition Oct 03
40       */
41      public PostfixMathCommandI get(String   s)
42      {
43          return (PostfixMathCommandI) super.get(s);
44      }
45      
46      /** overrides the standard hashtable method.
47       * If the argument is of the wrong type (i.e. not a String) 
48       * then throws ClassCastException
49       * RJM addition Oct 03
50       */
51      
52      public Object   get(Object   o)
53      {
54          return get((String  ) o);
55      }
56  }
57
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