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LibJS: Implement Temporal.PlainDate.prototype.toPlainYearMonth()

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This commit is contained in:
Linus Groh 2021-08-16 00:42:01 +01:00
parent ed9d37bd40
commit 6709c915aa
6 changed files with 75 additions and 1 deletions
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30
Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
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@ -417,6 +417,36 @@ PlainDate* date_from_fields(GlobalObject& global_object, Object& calendar, Objec
return static_cast<PlainDate*>(date_object);
}
// 12.1.25 YearMonthFromFields ( calendar, fields [ , options ] ),
PlainYearMonth* year_month_from_fields(GlobalObject& global_object, Object& calendar, Object& fields, Object* options)
{
auto& vm = global_object.vm();
// 1. Assert: Type(calendar) is Object.
// 2. Assert: Type(fields) is Object.
// 3. If options is not present, then
// a. Set options to undefined.
// 4. Else,
// a. Assert: Type(options) is Object.
// 5. Let yearMonth be ? Invoke(calendar, "yearMonthFromFields", « fields, options »).
auto year_month = Value(&calendar).invoke(global_object, vm.names.yearMonthFromFields, &fields, options ?: js_undefined());
if (vm.exception())
return {};
// 6. Perform ? RequireInternalSlot(yearMonth, [[InitializedTemporalYearMonth]]).
auto* year_month_object = year_month.to_object(global_object);
if (!year_month_object)
return {};
if (!is<PlainYearMonth>(year_month_object)) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotA, "Temporal.PlainYearMonth");
return {};
}
// 7. Return yearMonth.
return static_cast<PlainYearMonth*>(year_month_object);
}
// 12.1.28 CalendarEquals ( one, two ), https://tc39.es/proposal-temporal/#sec-temporal-calendarequals
bool calendar_equals(GlobalObject& global_object, Object& one, Object& two)
{