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LibJS: Implement Temporal.ZonedDateTime.prototype.withPlainTime

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Luke Wilde 2021-11-05 01:30:58 +00:00 • committed by Linus Groh
parent c098a6495b
commit 132a56f07c
3 changed files with 172 additions and 0 deletions
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43
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
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@ -64,6 +64,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.eraYear, era_year_getter, {}, Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.withPlainTime, with_plain_time, 0, 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);
@ -702,6 +703,48 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::era_year_getter)
return TRY(calendar_era_year(global_object, calendar, *plain_date_time));
}
// 6.3.31 Temporal.ZonedDateTime.prototype.withPlainTime ( [ plainTimeLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withplaintime
JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::with_plain_time)
{
// 1. Let zonedDateTime be the this value.
// 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]).
auto* zoned_date_time = TRY(typed_this_object(global_object));
PlainTime* plain_time = nullptr;
// 3. If plainTimeLike is undefined, then
if (vm.argument(0).is_undefined()) {
// a. Let plainTime be ? CreateTemporalTime(0, 0, 0, 0, 0, 0).
plain_time = TRY(create_temporal_time(global_object, 0, 0, 0, 0, 0, 0));
}
// 4. Else,
else {
// a. Let plainTime be ? ToTemporalTime(plainTimeLike).
plain_time = TRY(to_temporal_time(global_object, vm.argument(0)));
}
// 5. Let timeZone be zonedDateTime.[[TimeZone]].
auto& time_zone = zoned_date_time->time_zone();
// 6. Let instant be ! CreateTemporalInstant(zonedDateTime.[[Nanoseconds]]).
auto* instant = MUST(create_temporal_instant(global_object, zoned_date_time->nanoseconds()));
// 7. Let calendar be zonedDateTime.[[Calendar]].
auto& calendar = zoned_date_time->calendar();
// 8. Let plainDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, calendar).
auto* plain_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &time_zone, *instant, calendar));
// 9. Let resultPlainDateTime be ? CreateTemporalDateTime(plainDateTime.[[ISOYear]], plainDateTime.[[ISOMonth]], plainDateTime.[[ISODay]], plainTime.[[ISOHour]], plainTime.[[ISOMinute]], plainTime.[[ISOSecond]], plainTime.[[ISOMillisecond]], plainTime.[[ISOMicrosecond]], plainTime.[[ISONanosecond]], calendar).
auto* result_plain_date_time = TRY(create_temporal_date_time(global_object, plain_date_time->iso_year(), plain_date_time->iso_month(), plain_date_time->iso_day(), plain_time->iso_hour(), plain_time->iso_minute(), plain_time->iso_second(), plain_time->iso_millisecond(), plain_time->iso_microsecond(), plain_time->iso_nanosecond(), calendar));
// 10. 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));
// 11. 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

@ -49,6 +49,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(offset_getter);
JS_DECLARE_NATIVE_FUNCTION(era_getter);
JS_DECLARE_NATIVE_FUNCTION(era_year_getter);
JS_DECLARE_NATIVE_FUNCTION(with_plain_time);
JS_DECLARE_NATIVE_FUNCTION(value_of);
JS_DECLARE_NATIVE_FUNCTION(start_of_day);
JS_DECLARE_NATIVE_FUNCTION(to_instant);