internal static IEnumerable <DateTime> DatesInPosition(int year, int month, WeekOfMonthPosition position)
{
var day = default(int);
var maxDay = default(int);
if (position != WeekOfMonthPosition.Last)
{
day = 1 + 7 * FlagsEnum.PowerOfTwoExponent(position);
maxDay = day + 6;
}
else
{
maxDay = DateTime.DaysInMonth(year, month);
day = maxDay - 6;
}
while (day <= maxDay)
{
yield return(new DateTime(year, month, day, 0, 0, 0, DateTimeKind.Local));
day += 1;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="RecurrentWeekDaysOfMonth"/> struct.
/// </summary>
/// <param name="position">The position of the <paramref name="weekDays"/> in month.</param>
/// <param name="weekDays">The recurrent week days (ex: every <see cref="RecurrentWeekDays.WeekEnd"/>).</param>
/// <param name="anyWeekDays">If set to <c>true</c> any <paramref name="weekDays"/> is considered when determining the next occurence; otherwise, all the <paramref name="weekDays"/> are considered.</param>
/// <remarks>
/// When combining any <paramref name="weekDays"/> in the <see cref="WeekOfMonthPosition.Last"/> position,
/// the latest date and time matching the specified <see cref="_weekDays"/> is considered.
/// </remarks>
public RecurrentWeekDaysOfMonth(WeekOfMonthPosition position, RecurrentWeekDays weekDays, bool anyWeekDays)
{
_position = position;
_weekDays = weekDays;
_anyWeekDays = anyWeekDays;
}
/// <summary>
/// Initializes a new instance of the <see cref="RecurrentWeekDaysOfMonth"/> struct
/// where all <paramref name="weekDays"/> are considered when determining the next occurence.
/// </summary>
/// <param name="position">The position of the <paramref name="weekDays"/> in month.</param>
/// <param name="weekDays">The recurrent week days (ex: every <see cref="RecurrentWeekDays.WeekEnd"/>).</param>
public RecurrentWeekDaysOfMonth(WeekOfMonthPosition position, RecurrentWeekDays weekDays)
: this(position, weekDays, false)
{
}
