/**
 * Pair functions.
 *
 * @author Jacob Andersen
 */

{
  $         = [\ \n\r]* ;

  Exp.cons  : "cons" "(" Exp "," Exp ")" ;
  Exp.car   : "car" "(" Exp ")"  ;
  Exp.cdr   : "cdr" "(" Exp ")" ;
}