LiteralExpression.java

package com.googlecode.aviator;

/**
 *  Copyright (C) 2010 dennis zhuang (killme2008@gmail.com)
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published
 *  by the Free Software Foundation; either version 2.1 of the License, or
 *  (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 **/
import java.util.List;
import java.util.Map;
import java.util.Set;


/**
 * A literal expression with a fixed result
 * 
 * @author dennis
 * 
 */
public class LiteralExpression extends BaseExpression {

    private final Object result;


    public LiteralExpression(Object result, List<String> varNames) {
        super(varNames);
        this.result = result;
    }


    public Object execute(Map<String, Object> env) {
        return result;
    }

}