/** Our internal representation of a ParenExpr
 * in the N0 language.
 * See http://www.radford.edu/itec380/2009fall-ibarland/Hw06/hw06.html
 * 
 * @author Ian Barland
 * @version 2008.Nov.30
 */
public class ParenExpr extends Expr {

  Expr e;

  ParenExpr( Expr _e ) {
    this.e  = _e;
    }
  
  public String toString() {
    return "("
         + this.e.toString()
         + ")"
         ;
    }
    
  public Value eval() {
    return this.e.eval();
    }
    
  }