/*****************************************************************************

 JEP 2.4.1, Extensions 1.1.1
      April 30 2007
      (c) Copyright 2007, Nathan Funk and Richard Morris
      See LICENSE-*.txt for license information.

 *****************************************************************************/
package weasel.jep;


import java.util.Hashtable;

import weasel.jep.function.PostfixMathCommandI;


/*
 * A Hashtable which holds a list of functions.
 */
public class FunctionTable extends Hashtable {
	private static final long serialVersionUID = -1192898221311853572L;

	public FunctionTable() {

	}

	/**
	 * adds the PostfixMathCommandI for the function with name s. RJM addition
	 * Oct 03
	 */
	public Object put(String s, PostfixMathCommandI pfmc) {
		return super.put(s, pfmc);
	}

	/**
	 * overrides the standard hashtable method. If the arguments are of the
	 * wrong type then throws ClassCastException RJM addition Oct 03 TODO is
	 * Hashtable always index by Strings?
	 */
	@Override
	public Object put(Object o, Object p) {
		return put((String) o, (PostfixMathCommandI) p);
	}

	/**
	 * returns the PostfixMathCommandI for function with name s. RJM addition
	 * Oct 03
	 */
	public PostfixMathCommandI get(String s) {
		return (PostfixMathCommandI) super.get(s);
	}

	/**
	 * overrides the standard hashtable method. If the argument is of the wrong
	 * type (i.e. not a String) then throws ClassCastException RJM addition Oct
	 * 03
	 */

	@Override
	public Object get(Object o) {
		return get((String) o);
	}
}
