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LibJS: Rename Get{IANA => Named}TimeZonePreviousTransition

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This is an editorial change in the Temporal spec.

See: 6b759d1
This commit is contained in:
Linus Groh 2022-10-16 14:01:28 +02:00
parent 8cc260107d
commit 484c66125d
3 changed files with 6 additions and 6 deletions
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6
Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
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@ -152,10 +152,10 @@ BigInt* get_named_time_zone_next_transition(VM&, [[maybe_unused]] StringView tim
return nullptr;
}
// 11.6.4 GetIANATimeZonePreviousTransition ( epochNanoseconds, timeZoneIdentifier ), https://tc39.es/proposal-temporal/#sec-temporal-getianatimezoneprevioustransition
BigInt* get_iana_time_zone_previous_transition(VM&, [[maybe_unused]] BigInt const& epoch_nanoseconds, [[maybe_unused]] StringView time_zone_identifier)
// 11.6.4 GetNamedTimeZonePreviousTransition ( timeZoneIdentifier, epochNanoseconds ), https://tc39.es/proposal-temporal/#sec-temporal-getianatimezoneprevioustransition
BigInt* get_named_time_zone_previous_transition(VM&, [[maybe_unused]] StringView time_zone_identifier, [[maybe_unused]] BigInt const& epoch_nanoseconds)
{
// The implementation-defined abstract operation GetIANATimeZonePreviousTransition takes arguments epochNanoseconds (a BigInt) and timeZoneIdentifier (a String) and returns a BigInt or null.
// The implementation-defined abstract operation GetNamedTimeZonePreviousTransition takes arguments timeZoneIdentifier (a String) and epochNanoseconds (a BigInt) and returns a BigInt or null.
// The returned value t represents 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. The operation returns null if no such transition exists for which t ≥ ℤ(nsMinInstant).
// Given the same values of epochNanoseconds and timeZoneIdentifier, the result must be the same for the lifetime of the surrounding agent.

2
Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.h
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@ -41,7 +41,7 @@ String canonicalize_time_zone_name(String const& time_zone);
ThrowCompletionOr<TimeZone*> create_temporal_time_zone(VM&, String const& identifier, FunctionObject const* new_target = nullptr);
ISODateTime get_iso_parts_from_epoch(VM&, Crypto::SignedBigInteger const& epoch_nanoseconds);
BigInt* get_named_time_zone_next_transition(VM&, StringView time_zone_identifier, BigInt const& epoch_nanoseconds);
BigInt* get_iana_time_zone_previous_transition(VM&, BigInt const& epoch_nanoseconds, StringView time_zone_identifier);
BigInt* get_named_time_zone_previous_transition(VM&, StringView time_zone_identifier, BigInt const& epoch_nanoseconds);
String format_time_zone_offset_string(double offset_nanoseconds);
String format_iso_time_zone_offset_string(double offset_nanoseconds);
ThrowCompletionOr<Object*> to_temporal_time_zone(VM&, Value temporal_time_zone_like);

4
Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
View file

@ -214,8 +214,8 @@ JS_DEFINE_NATIVE_FUNCTION(TimeZonePrototype::get_previous_transition)
if (!time_zone->offset_nanoseconds().has_value())
return js_null();
// 5. Let transition be GetIANATimeZonePreviousTransition(startingPoint.[[Nanoseconds]], timeZone.[[Identifier]]).
auto* transition = get_iana_time_zone_previous_transition(vm, starting_point->nanoseconds(), time_zone->identifier());
// 5. Let transition be GetNamedTimeZonePreviousTransition(timeZone.[[Identifier]], startingPoint.[[Nanoseconds]]).
auto* transition = get_named_time_zone_previous_transition(vm, time_zone->identifier(), starting_point->nanoseconds());
// 6. If transition is null, return null.
if (!transition)