internal ZoneInterval GetZoneInterval(Instant instant)
{
if (seam.Contains(instant))
{
return(seam);
}
return(adjustmentZone.GetZoneInterval(instant));
}
/// <summary>
/// Returns the zone interval for the given instant in time. See <see cref="ZonedDateTime"/> for more details.
/// </summary>
public ZoneInterval GetZoneInterval(Instant instant)
{
if (headInterval != null && headInterval.Contains(instant))
{
return(headInterval);
}
if (tailInterval != null && tailInterval.Contains(instant))
{
return(tailInterval);
}
// Avoid having to worry about Instant.MaxValue for the rest of the class.
if (instant == Instant.MaxValue)
{
return(adjustmentIntervals[adjustmentIntervals.Count - 1].GetZoneInterval(instant));
}
int lower = 0; // Inclusive
int upper = adjustmentIntervals.Count; // Exclusive
while (lower < upper)
{
int current = (lower + upper) / 2;
var candidate = adjustmentIntervals[current];
if (candidate.Start > instant)
{
upper = current;
}
else if (candidate.End <= instant)
{
lower = current + 1;
}
else
{
return(candidate.GetZoneInterval(instant));
}
}
throw new InvalidOperationException
("Instant " + instant + " did not exist in the range of adjustment intervals");
}
