/*
 * tuProlog - Copyright (C) 2001-2002  aliCE team at deis.unibo.it
 *
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package alice.tuprolog;

import java.util.*;

import alice.tuprolog.Struct;

/**
 * @author Alex Benini
 *
 * End state of demostration.
 */
public class StateEnd extends State {
	
	private int endState;	
	private Struct goal;
	private List vars;
	
	/**
	 * Constructor
	 * @param end Terminal state of computation
	 */
	public StateEnd(EngineManager c, int end) {
		endState = end;
	}
	
	public int getResultDemo() {
		return endState;
	}
	
	public Struct getResultGoal() {
		return goal;
	}
	
	public List getResultVars() {
		return vars;
	}
	
	
	void doJob(Engine e) {
		vars = new ArrayList();
		goal = (Struct)e.startGoal.copyResult(e.goalVars,vars);
	}
	
	
	public String toString() {
		switch(endState){
		case EngineManager.FALSE  : return "FALSE";
		case EngineManager.TRUE   : return "TRUE";
		case EngineManager.TRUE_CP: return "TRUE_CP";
		default                   : return "HALT";
		}
	}
	
}