package com.hartmath.loadable;
import com.hartmath.expression.HFunction;
import com.hartmath.expression.HObject;
import com.hartmath.lib.Session;
import com.hartmath.mapping.E1SArg;

/**
 *  Class Declaration.
 *
 *@author
 *@created    16. Juli 2001
 *@see
 *@version    %I%, %G%
 */
public class ESort extends E1SArg {
	/**
	 *  Constructor for the ESort object
	 */
	public ESort() {
	}


	/**
	 *@param  f        Description of Parameter
	 *@param  session  Description of Parameter
	 *@return          <code>null</code> or the evaluated object
	 */
	public HObject e1FunArg(HFunction f, Session session) {
		if (f.size() > 1) {
			HFunction v = (HFunction) f.clone();

			f.sort(session);

			return f;
		}

		return null;
	}

}