/// <summary>
/// Get history of offsets with keys as zoned time. Used to convert from zoned to UTC time.
/// </summary>
/// <returns></returns>
public static SortedMap <DateTime, long> GetOffsetsFromZoned(string tzFrom, bool standardOffsetOnly = false)
{
string tz;
if (!Normalizer.TryGetValue(tzFrom.ToLowerInvariant(), out tz))
{
tz = tzFrom;
}
var sortedMap = new SortedMap <DateTime, long>();
if (tz.ToLowerInvariant() == "utc")
{
sortedMap.Set(new DateTime(0L, DateTimeKind.Unspecified), 0);
}
else
{
var givenTz = DateTimeZoneProviders.Tzdb[tz];
var intervals = givenTz.GetZoneIntervals(Instant.FromDateTimeUtc(
// https://en.wikipedia.org/wiki/International_Meridian_Conference
new DateTime(1884, 10, 22, 12, 0, 0, DateTimeKind.Utc)
), Instant.MaxValue);
foreach (var interval in intervals)
{
var localStart = interval.IsoLocalStart.ToDateTimeUnspecified();
var offset = standardOffsetOnly ? interval.StandardOffset : interval.WallOffset;
var offsetTicks = offset.Ticks;
sortedMap.TryAddLast(localStart, offsetTicks);
}
}
sortedMap.Complete();
return(sortedMap);
}
public ContractsTests(ISeries <K, V> testSeries,
SortedMap <K, V> materializedSeries,
SortedMap <K, V> ephemeralSeries = null)
{
_testSeries = testSeries ?? throw new ArgumentNullException(nameof(testSeries));
_materializedSeries = materializedSeries ?? throw new ArgumentNullException(nameof(materializedSeries));
_ephemeralSeries = ephemeralSeries;
if (!ReferenceEquals(null, ephemeralSeries))
{
var eqc = EqualityComparer <V> .Default;
// TODO (UX) Spreads signature conflicts with LINQ, easy to fix but not very convenient
var intersect = materializedSeries.Zip(ephemeralSeries, (l, r) =>
{
if (!eqc.Equals(l, r))
{
throw new ArgumentException("materializedSeries and ephemeralSeries contain different values for the same keys");
}
else
{
return(l);
}
});
if (intersect.First.IsMissing)
{
foreach (var kvp in materializedSeries.Take(10))
{
ephemeralSeries.Set(kvp.Key, kvp.Value);
}
}
}
}