/// <summary>
/// Returns the next date after <paramref name="minDate"/> that is represented by this token.
/// </summary>
/// <remarks>
/// This method may return a date that is before <paramref name="minDate"/> if there is no date after <paramref
/// name="minDate"/> that is represented by this token.
/// </remarks>
/// <param name="minDate">The minimum date to return. The time part is ignored.</param>
/// <param name="inclusive">A value indicating whether the returned date should be on or after rather than
/// strictly after <paramref name="minDate"/>.</param>
/// <returns>The next date after <paramref name="minDate"/> that is represented by this token.</returns>
/// <exception cref="InvalidOperationException">If this token is not valid.</exception>
public override DateTime ToDateTime(DateTime minDate, bool inclusive)
{
this.ThrowIfNotValid();
DateTime date = minDate.Date.AddDays(1);
// Find the next date with the matching weekday
DayOfWeek dayOfWeek = this.DayOfWeek ?? System.DayOfWeek.Sunday;
while (date.DayOfWeek != dayOfWeek)
{
date = date.AddDays(1);
}
// Advance the date by a week if necessary
DayOfWeekRelation dayOfWeekRelation = this.DayOfWeekRelation ?? Parsing.DayOfWeekRelation.Next;
if (dayOfWeekRelation == Parsing.DayOfWeekRelation.AfterNext ||
(dayOfWeekRelation == Parsing.DayOfWeekRelation.NextWeek && dayOfWeek > minDate.DayOfWeek))
{
date = date.AddDays(7);
}
return(date);
}
/// <summary>
/// Asserts that a <see cref="DateToken"/> is an instance of the <see cref="DayOfWeekDateToken"/> class and
/// that its value is equal to the specified parameters.
/// </summary>
/// <param name="actual">The actual <see cref="DateToken"/>.</param>
/// <param name="expectedDayOfWeek">The expected day of week.</param>
/// <param name="expectedDayOfWeekRelation">The expected relation between the day of week and date.</param>
private static void AssertAreEqual(DateToken actual, DayOfWeek? expectedDayOfWeek, DayOfWeekRelation? expectedDayOfWeekRelation)
{
Assert.AreEqual(typeof(DayOfWeekDateToken), actual.GetType());
Assert.AreEqual(expectedDayOfWeek, ((DayOfWeekDateToken)actual).DayOfWeek);
Assert.AreEqual(expectedDayOfWeekRelation, ((DayOfWeekDateToken)actual).DayOfWeekRelation);
}
