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LibJS: Implement Temporal.TimeZone.prototype.getPreviousTransition()

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Linus Groh 2021-10-30 10:28:12 +02:00
parent e9cbeeac45
commit 92fdae178b
6 changed files with 63 additions and 0 deletions
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9
Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
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@ -186,6 +186,15 @@ BigInt* get_iana_time_zone_next_transition(GlobalObject&, [[maybe_unused]] BigIn
return nullptr;
}
// 11.6.7 GetIANATimeZonePreviousTransition ( epochNanoseconds, timeZoneIdentifier ), https://tc39.es/proposal-temporal/#sec-temporal-getianatimezoneprevioustransition
BigInt* get_iana_time_zone_previous_transition(GlobalObject&, [[maybe_unused]] BigInt const& epoch_nanoseconds, [[maybe_unused]] StringView time_zone_identifier)
{
// The abstract operation GetIANATimeZonePreviousTransition is an implementation-defined algorithm that returns an integer representing the number of nanoseconds since the Unix epoch in UTC that corresponds to the last time zone transition before epochNanoseconds in the IANA time zone identified by timeZoneIdentifier or null if no such transition exists.
// TODO: Implement this
return nullptr;
}
// https://tc39.es/proposal-temporal/#prod-TimeZoneNumericUTCOffset
static bool parse_time_zone_numeric_utc_offset_syntax(String const& offset_string, StringView& sign, StringView& hours, Optional<StringView>& minutes, Optional<StringView>& seconds, Optional<StringView>& fraction)
{