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LibJS: Implement Temporal.ZonedDateTime.from

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Luke Wilde 2021-11-07 00:51:10 +00:00 • committed by Idan Horowitz
parent 2b89d2a360
commit c9ec3295d9
3 changed files with 186 additions and 0 deletions
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33
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimeConstructor.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Instant.h>
@ -28,6 +29,9 @@ void ZonedDateTimeConstructor::initialize(GlobalObject& global_object)
// 6.2.1 Temporal.ZonedDateTime.prototype, https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-prototype
define_direct_property(vm.names.prototype, global_object.temporal_zoned_date_time_prototype(), 0);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.from, from, 1, attr);
define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
}
@ -64,4 +68,33 @@ ThrowCompletionOr<Object*> ZonedDateTimeConstructor::construct(FunctionObject& n
return TRY(create_temporal_zoned_date_time(global_object, *epoch_nanoseconds, *time_zone, *calendar, &new_target));
}
// 6.2.2 Temporal.ZonedDateTime.from ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.from
JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimeConstructor::from)
{
// 1. Set options to ? GetOptionsObject(options).
auto* options = TRY(get_options_object(global_object, vm.argument(1)));
auto item = vm.argument(0);
// 2. If Type(item) is Object and item has an [[InitializedTemporalZonedDateTime]] internal slot, then
if (item.is_object() && is<ZonedDateTime>(item.as_object())) {
auto& item_object = static_cast<ZonedDateTime&>(item.as_object());
// a. Perform ? ToTemporalOverflow(options).
(void)TRY(to_temporal_overflow(global_object, *options));
// b. Perform ? ToTemporalDisambiguation(options).
(void)TRY(to_temporal_disambiguation(global_object, *options));
// c. Perform ? ToTemporalOffset(options, "reject").
(void)TRY(to_temporal_offset(global_object, *options, "reject"));
// d. Return ! CreateTemporalZonedDateTime(item.[[Nanoseconds]], item.[[TimeZone]], item.[[Calendar]]).
return MUST(create_temporal_zoned_date_time(global_object, item_object.nanoseconds(), item_object.time_zone(), item_object.calendar()));
}
// 3. Return ? ToTemporalZonedDateTime(item, options).
return TRY(to_temporal_zoned_date_time(global_object, item, options));
}
}