|
public Plus ( |
||
| other | The Interval to add. | |
| Résultat | ||
public Interval Plus(Interval other)
{
// One of the Intervals is zero length?
if (multiplier == 0) return (other);
if (other.multiplier == 0) return (this);
// Both Intervals have the same unit?
if (period == other.period)
return (new Interval (multiplier + other.multiplier, period));
// Otherwise check for equivalences
if ((period == Period.YEAR) && (other.period == Period.MONTH))
return (new Interval (12 * multiplier + other.multiplier, Period.MONTH));
if ((period == Period.MONTH) && (other.period == Period.YEAR))
return (new Interval (multiplier + 12 * other.multiplier, Period.MONTH));
if ((period == Period.WEEK) && (other.period == Period.DAY))
return (new Interval (7 * multiplier + other.multiplier, Period.DAY));
if ((period == Period.DAY) && (other.period == Period.WEEK))
return (new Interval (multiplier + 7 * other.multiplier, Period.DAY));
throw new ArgumentException ("Intervals cannot be combined");
}
/// <summary>
/// Tests if the payment date falls on a calculated date.
/// </summary>
/// <param name="paymentDate">The payment date.</param>
/// <param name="startDate">The calculation period start date.</param>
/// <param name="endDate">The calculation perion end date.</param>
/// <param name="freq"> The period frequency.</param>
/// <returns><c>true</c> if the payment date falls on a calculated date.</returns>
private static bool IsUnadjustedCalculationPeriodDate(Date paymentDate, Date startDate, Date endDate, Interval freq)
{
Interval step = new Interval (0, Period.DAY);
for (;;) {
Date targetDate = startDate.Plus (step);
if (targetDate.CompareTo (endDate) > 0) return (false);
if (targetDate.Equals (paymentDate)) return (true);
step = step.Plus (freq);
}
}