public override void ExitParens(calcParser.ParensContext context)
{
base.ExitParens(context);
var sum = context.sum();
double v = Annotations.ptp.Get(sum);
Annotations.ptp.Put(context, v);
}
/// <summary>
/// Exit a parse tree produced by <see cref="calcParser.parens"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitParens([NotNull] calcParser.ParensContext context)
{
}
