public override SqlObject VisitParenthesizedScalarExperession([NotNull] sqlParser.ParenthesizedScalarExperessionContext context)
        {
            Contract.Requires(context != null);
            Contract.Requires(context.ChildCount == 3); // open parens and close parens

            IParseTree parseTree = context.children[1];

            return(this.Visit(parseTree));
        }
 /// <summary>
 /// Exit a parse tree produced by the <c>ParenthesizedScalarExperession</c>
 /// labeled alternative in <see cref="sqlParser.primary_expression"/>.
 /// <para>The default implementation does nothing.</para>
 /// </summary>
 /// <param name="context">The parse tree.</param>
 public virtual void ExitParenthesizedScalarExperession([NotNull] sqlParser.ParenthesizedScalarExperessionContext context)
 {
 }