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LibJS: Implement Temporal.PlainMonthDay.from

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Luke Wilde 2021-09-10 03:44:34 +01:00 • committed by Linus Groh
parent d9d1e25db3
commit 2d5b15295a
3 changed files with 91 additions and 0 deletions
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31
Userland/Libraries/LibJS/Runtime/Temporal/PlainMonthDayConstructor.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/AbstractOperations.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
@ -28,6 +29,9 @@ void PlainMonthDayConstructor::initialize(GlobalObject& global_object)
define_direct_property(vm.names.prototype, global_object.temporal_plain_month_day_prototype(), 0);
define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.from, from, 1, attr);
}
// 10.1.1 Temporal.PlainMonthDay ( isoMonth, isoDay [ , calendarLike [ , referenceISOYear ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday
@ -89,4 +93,31 @@ Value PlainMonthDayConstructor::construct(FunctionObject& new_target)
return create_temporal_month_day(global_object, m, d, *calendar, ref, &new_target);
}
// 10.2.2 Temporal.PlainMonthDay.from ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.from
JS_DEFINE_NATIVE_FUNCTION(PlainMonthDayConstructor::from)
{
// 1. Set options to ? GetOptionsObject(options).
auto* options = get_options_object(global_object, vm.argument(1));
if (vm.exception())
return {};
auto item = vm.argument(0);
// 2. If Type(item) is Object and item has an [[InitializedTemporalMonthDay]] internal slot, then
if (item.is_object() && is<PlainMonthDay>(item.as_object())) {
// a. Perform ? ToTemporalOverflow(options).
(void)to_temporal_overflow(global_object, *options);
if (vm.exception())
return {};
auto& plain_month_day_object = static_cast<PlainMonthDay&>(item.as_object());
// b. Return ? CreateTemporalMonthDay(item.[[ISOMonth]], item.[[ISODay]], item.[[Calendar]], item.[[ISOYear]]).
return create_temporal_month_day(global_object, plain_month_day_object.iso_month(), plain_month_day_object.iso_day(), plain_month_day_object.calendar(), plain_month_day_object.iso_year());
}
// 3. Return ? ToTemporalMonthDay(item, options).
return to_temporal_month_day(global_object, item, options);
}
}