/// <summary>
/// Parse a day rule expression
/// A Day Rule Expression is:
/// * * * * [[{description}]] {working periods} #{comments}
/// ^ ^ ^ ^ ^ ^ ^
/// | | | | | | +- (Optional) EoL comment
/// | | | | | |
/// | | | | | +---------------- (Optional) Comma separated list of working periods
/// | | | | |
/// | | | | +-------------------------------------- (Optional) Description of the day
/// | | | |
/// | | | +---------------------------------------- Day of Week rule
/// | | |
/// | | +------------------------------------------ Day of Month rule
/// | |
/// | +-------------------------------------------- Month rule
/// |
/// +---------------------------------------------- Year rule
/// <example>
/// Every day non working day: * * * * [[]]
/// Every day working day: * * * * [[]] 08:30-17:30
/// Vacancy on 29th of february: * * 29 * * [[vacancy on the extra day]]
/// Vacancy on 1st of march of leap years: */Leap 3 1 * [[Vacancy on the extra day]]
/// Ordinary working days: * * * 1..5 [[]] 08:30-13:30,14:30-17:30
/// </example>
/// </summary>
public static bool TryParse(string value, out DayRule dayRule)
{
dayRule = default;
if (string.IsNullOrWhiteSpace(value))
{
return(false);
}
if (!TryParseInternal(value, out var description, out var yearMatchers, out var monthMatchers, out var dayOfMonthMatchers, out var dayOfWeekMatchers, out var timePeriods))
{
return(false);
}
dayRule = new DayRule(description, yearMatchers, monthMatchers, dayOfMonthMatchers, dayOfWeekMatchers,
timePeriods);
return(true);
}
public void Add(DayRulePolicy policy, DayRule rule) => Add(new CalendarRule(policy, rule));
public CalendarRule(DayRulePolicy policy, DayRule rule)
{
Policy = policy;
Rule = rule ?? throw new ArgumentNullException(nameof(rule));
}