public const_node create_bigint_const(string text, SourceContext sc)
        {
            var        txt = text.Substring(0, text.Length - 2);
            const_node cn  = new bigint_const();

            try
            {
                (cn as bigint_const).val = System.UInt64.Parse(txt);
            }
            catch (Exception)
            {
                errors.Add(new BadInt(CurrentFileName, sc, null));
            }
            cn.source_context = sc;
            return(cn);
        }
 public virtual void visit(bigint_const _bigint_const)
 {
     DefaultVisit(_bigint_const);
 }