/* Copyright (C) 2014 A.Vontobel  
 *
 * 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
 * of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * The license is in LICENCE-GPL.txt.
 * If not, see http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
 */

package net.sf.drawj2d.cmd;

import org.hecl.*;
import java.util.ArrayList;
import java.util.Arrays;

/**
 * ExprinputCmd implements the "exprinput" command, which returns
 * the unevaluated mathematical expression.
 */

public class ExprinputCmd implements Command {
    API api;
    boolean debug = false;
    
    public ExprinputCmd (API api) {
        this.api = api;
    }
    
    @Override
    public Thing cmdCode(Interp interp, Thing[] argv) throws HeclException {
        assert argv.length > 0;
        if (debug) System.out.println(argv[0].toString());
        
        StringBuilder sb = new StringBuilder();
        for (int i = 1; i < argv.length; i++) {
            if (i > 1)  sb.append(" ");
            sb.append(StringThing.get(argv[i]));
        }
        String expression = sb.toString();
        Thing th;
        
        if (argv.length > 1) {
            th = StringThing.create(expression);
        } else {
            throw new HeclException ("Illegal nb of arguments.");
        }
	return th;
    }
}