public bool visitLeave(SmallerEqualCondition smallerEqualCondition)
 {
     return true;
 }
        public virtual bool visitLeave(SmallerEqualCondition condition)
        {
            //a
            var b = evaluation.Pop();
            //b
            var a = evaluation.Pop();

            // equal b to a
            Console.Error.WriteLine("EVAL - " + a.getText() + " <= " + b.getText());
            var c = a.smallerEqual(b);

            evaluation.Push(c);

            return true;
        }
 public bool visitEnter(SmallerEqualCondition smallerEqualCondition)
 {
     return true;
 }