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LibJS: Implement Temporal.ZonedDateTime.prototype.withPlainDate

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Luke Wilde 2021-11-05 01:34:31 +00:00 • committed by Linus Groh
parent 132a56f07c
commit d5f2745a19
3 changed files with 118 additions and 0 deletions
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33
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
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@ -65,6 +65,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.withPlainTime, with_plain_time, 0, attr);
define_native_function(vm.names.withPlainDate, with_plain_date, 1, attr);
define_native_function(vm.names.valueOf, value_of, 0, attr);
define_native_function(vm.names.startOfDay, start_of_day, 0, attr);
define_native_function(vm.names.toInstant, to_instant, 0, attr);
@ -745,6 +746,38 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::with_plain_time)
return MUST(create_temporal_zoned_date_time(global_object, instant->nanoseconds(), time_zone, calendar));
}
// 6.3.32 Temporal.ZonedDateTime.prototype.withPlainDate ( plainDateLike ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withplaindate
JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::with_plain_date)
{
// 1. Let zonedDateTime be the this value.
// 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]).
auto* zoned_date_time = TRY(typed_this_object(global_object));
// 3. Let plainDate be ? ToTemporalDate(plainDateLike).
auto* plain_date = TRY(to_temporal_date(global_object, vm.argument(0)));
// 4. Let timeZone be zonedDateTime.[[TimeZone]].
auto& time_zone = zoned_date_time->time_zone();
// 5. Let instant be ! CreateTemporalInstant(zonedDateTime.[[Nanoseconds]]).
auto* instant = MUST(create_temporal_instant(global_object, zoned_date_time->nanoseconds()));
// 6. Let plainDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, zonedDateTime.[[Calendar]]).
auto* plain_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &time_zone, *instant, zoned_date_time->calendar()));
// 7. Let calendar be ? ConsolidateCalendars(zonedDateTime.[[Calendar]], plainDate.[[Calendar]]).
auto* calendar = TRY(consolidate_calendars(global_object, zoned_date_time->calendar(), plain_date->calendar()));
// 8. Let resultPlainDateTime be ? CreateTemporalDateTime(plainDate.[[ISOYear]], plainDate.[[ISOMonth]], plainDate.[[ISODay]], plainDateTime.[[ISOHour]], plainDateTime.[[ISOMinute]], plainDateTime.[[ISOSecond]], plainDateTime.[[ISOMillisecond]], plainDateTime.[[ISOMicrosecond]], plainDateTime.[[ISONanosecond]], calendar).
auto* result_plain_date_time = TRY(create_temporal_date_time(global_object, plain_date->iso_year(), plain_date->iso_month(), plain_date->iso_day(), plain_date_time->iso_hour(), plain_date_time->iso_minute(), plain_date_time->iso_second(), plain_date_time->iso_millisecond(), plain_date_time->iso_microsecond(), plain_date_time->iso_nanosecond(), *calendar));
// 9. Set instant to ? BuiltinTimeZoneGetInstantFor(timeZone, resultPlainDateTime, "compatible").
instant = TRY(builtin_time_zone_get_instant_for(global_object, &time_zone, *result_plain_date_time, "compatible"sv));
// 10. Return ! CreateTemporalZonedDateTime(instant.[[Nanoseconds]], timeZone, calendar).
return MUST(create_temporal_zoned_date_time(global_object, instant->nanoseconds(), time_zone, *calendar));
}
// 6.3.44 Temporal.ZonedDateTime.prototype.valueOf ( ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.valueof
JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::value_of)
{

1
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h
View file

@ -50,6 +50,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(era_getter);
JS_DECLARE_NATIVE_FUNCTION(era_year_getter);
JS_DECLARE_NATIVE_FUNCTION(with_plain_time);
JS_DECLARE_NATIVE_FUNCTION(with_plain_date);
JS_DECLARE_NATIVE_FUNCTION(value_of);
JS_DECLARE_NATIVE_FUNCTION(start_of_day);
JS_DECLARE_NATIVE_FUNCTION(to_instant);