private static bool TryGetExplicitDayOfMonthSpecification(Queue <Token> unProcessedTokens,
out AbstractDayOfMonthSpecification dayOfMonthSpecification)
{
const String explicitDayOfMonthRegex = @"^\d{1,2}$";
// check if the next token is an explicit day of month specification token
if (Regex.IsMatch(unProcessedTokens.Peek().Value, explicitDayOfMonthRegex))
{
string dayOfMonthSpecificationString = unProcessedTokens.Dequeue().Value;
dayOfMonthSpecification = new ExplicitDayOfMonthSpecification(int.Parse(dayOfMonthSpecificationString));
return(true);
}
dayOfMonthSpecification = null;
return(false);
}
public static bool TryParse(Queue <Token> unProcessedTokens, out DayOfYearSpecification?dayOfYearSpecification)
{
MonthOfYear?monthOfYear;
if (MonthOfYearExpression.TryParse(unProcessedTokens, out monthOfYear))
{
AbstractDayOfMonthSpecification dayOfMonthSpecification;
if (!DayOfMonthSpecificationExpression.TryParse(unProcessedTokens, out dayOfMonthSpecification))
{
// default is first day of the month
dayOfMonthSpecification = new ExplicitDayOfMonthSpecification(1);
}
dayOfYearSpecification = new DayOfYearSpecification(monthOfYear.Value, dayOfMonthSpecification);
return(true);
}
dayOfYearSpecification = null;
return(false);
}
