package patronInterpreter;

import java.util.ArrayList;

import java.util.Iterator;

//esta clase seria el cliente
public class Main {

	public static void main(String[] args) {
		  String roman = "MCMXXVIII";
	      Context context = new Context(roman);

	      //Construye el árbol sintáctico
	      ArrayList<Expression> tree = new ArrayList<Expression>();
	      tree.add(new ThousandExpression());
	      tree.add(new HundredExpression());
	      tree.add(new TenExpression());
	      tree.add(new OneExpression());

	      // Interpretar: recorre todas las Expresiones del árbol.
	      for (Iterator it = tree.iterator(); it.hasNext();){
	    	  Expression exp = (Expression)it.next();
	    	  exp.interpret(context);
	      }

	      System.out.println(roman + " = " + Integer.toString(context.getOutput()));
	}
}