public override void ExitFactorToParens(calcParser.FactorToParensContext context)
{
base.ExitFactorToParens(context);
var parens = context.parens();
double v = Annotations.ptp.Get(parens);
Annotations.ptp.Put(context, v);
}
/// <summary>
/// Exit a parse tree produced by the <c>factorToParens</c>
/// labeled alternative in <see cref="calcParser.factor"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitFactorToParens([NotNull] calcParser.FactorToParensContext context)
{
}