internal override ParseResult <ZonedDateTime> CalculateValue(PatternFields usedFields, string text)
{
var localResult = LocalDateTimePatternParser.LocalDateTimeParseBucket.CombineBuckets(usedFields, Date, Time, text);
if (!localResult.Success)
{
return(localResult.ConvertError <ZonedDateTime>());
}
var localDateTime = localResult.Value;
// No offset - so just use the resolver
if ((usedFields & PatternFields.EmbeddedOffset) == 0)
{
try
{
return(ParseResult <ZonedDateTime> .ForValue(Zone.ResolveLocal(localDateTime, resolver)));
}
catch (SkippedTimeException)
{
return(ParseResult <ZonedDateTime> .SkippedLocalTime(text));
}
catch (AmbiguousTimeException)
{
return(ParseResult <ZonedDateTime> .AmbiguousLocalTime(text));
}
}
// We were given an offset, so we can resolve and validate using that
var mapping = Zone.MapLocal(localDateTime);
ZonedDateTime result;
switch (mapping.Count)
{
// If the local time was skipped, the offset has to be invalid.
case 0:
return(ParseResult <ZonedDateTime> .InvalidOffset(text));
case 1:
result = mapping.First(); // We'll validate in a minute
break;
case 2:
result = mapping.First().Offset == Offset?mapping.First() : mapping.Last();
break;
default:
throw new InvalidOperationException("Mapping has count outside range 0-2; should not happen.");
}
if (result.Offset != Offset)
{
return(ParseResult <ZonedDateTime> .InvalidOffset(text));
}
return(ParseResult <ZonedDateTime> .ForValue(result));
}
