CupCommand_GOTO.java

/*----------------------------------------------------------------------------------------------------------------
 * CupCarbon: A Smart City & IoT Wireless Sensor Network Simulator
 * www.cupcarbon.com
 * ----------------------------------------------------------------------------------------------------------------
 * Copyright (C) 2013-2017 CupCarbon
 * ----------------------------------------------------------------------------------------------------------------
 * 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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *----------------------------------------------------------------------------------------------------------------
 * CupCarbon U-One is part of the research project PERSEPTEUR supported by the
 * French Agence Nationale de la Recherche ANR
 * under the reference ANR-14-CE24-0017-01.
 * ----------------------------------------------------------------------------------------------------------------
 **/

package cupcarbon_script;

/**
 * @author Ahcene Bounceur
 * @author Molham Darwish
 * @version 1.0
 */

public class CupCommand_GOTO extends CupCommand {
	
	protected String arg ;
		
	public CupCommand_GOTO(CupScript script, String arg) {
		this.script = script ; 					
		this.arg = arg ;
	}
	
	@Override
	public String execute() {
		
		if(arg.equals("++")) {
			script.next();
			return "000";
		}
		if(arg.equals("--")) {
			script.previous();
			return "000";
		}
		String idxStr = script.getVariableValue(arg);
		int idx;
		if(Character.isDigit(idxStr.charAt(0))) {
			idx = Integer.valueOf(idxStr);
			script.setIndex(idx-2);
			return "000";
		}
		idx = script.getLineOfLabel(arg);
		script.setIndex(idx-2);
		return "000";
	}
			
	@Override
	public String toString() {
		return "GOTO";
	}
}