/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * http://www.gnu.org/copyleft/gpl.html
 */
package com.festina.gameserver.script;

import org.apache.bsf.BSFManager;

public class Expression
{
    private final BSFManager context;
    @SuppressWarnings("unused")
    private final String lang;
    @SuppressWarnings("unused")
    private final String code;

    public static Object eval(String lang, String code)
    {
        try
        {
            return new BSFManager().eval(lang, "eval", 0, 0, code);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
    }

    public static Object eval(BSFManager context, String lang, String code)
    {
        try
        {
            return context.eval(lang, "eval", 0, 0, code);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
    }

    public static Expression create(BSFManager context, String lang, String code)
    {
        try
        {
            return new Expression(context, lang, code);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
    }

    private Expression(BSFManager pContext, String pLang, String pCode)
    {
        this.context = pContext;
        this.lang = pLang;
        this.code = pCode;
    }

    public <T> void addDynamicVariable(String name, T value, Class<T> type)
    {
        try
        {
            context.declareBean(name, value, type);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    public void removeDynamicVariable(String name)
    {
        try
        {
            context.undeclareBean(name);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

}
