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LibJS: Implement Temporal.PlainDateTime.prototype.withCalendar

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Idan Horowitz 2021-07-31 01:29:41 +03:00 • committed by Linus Groh
parent 4c4482c7f6
commit f657c86d58
3 changed files with 33 additions and 0 deletions
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19
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp
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@ -48,6 +48,7 @@ void PlainDateTimePrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.inLeapYear, in_leap_year_getter, {}, Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.withCalendar, with_calendar, 1, attr);
define_native_function(vm.names.valueOf, value_of, 0, attr);
define_native_function(vm.names.toPlainDate, to_plain_date, 0, attr);
define_native_function(vm.names.getISOFields, get_iso_fields, 0, attr);
@ -349,6 +350,24 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::in_leap_year_getter)
return calendar_in_leap_year(global_object, calendar, *date_time);
}
// 5.3.25 Temporal.PlainDateTime.prototype.withCalendar ( calendar ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.withcalendar
JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::with_calendar)
{
// 1. Let temporalDateTime be the this value.
// 2. Perform ? RequireInternalSlot(temporalDateTime, [[InitializedTemporalDateTime]]).
auto* date_time = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let calendar be ? ToTemporalCalendar(calendar).
auto* calendar = to_temporal_calendar(global_object, vm.argument(0));
if (vm.exception())
return {};
// 4. Return ? CreateTemporalDateTime(temporalDateTime.[[ISOYear]], temporalDateTime.[[ISOMonth]], temporalDateTime.[[ISODay]], temporalDateTime.[[ISOHour]], temporalDateTime.[[ISOMinute]], temporalDateTime.[[ISOSecond]], temporalDateTime.[[ISOMillisecond]], temporalDateTime.[[ISOMicrosecond]], temporalDateTime.[[ISONanosecond]], calendar).
return create_temporal_date_time(global_object, date_time->iso_year(), date_time->iso_month(), date_time->iso_day(), date_time->iso_hour(), date_time->iso_minute(), date_time->iso_second(), date_time->iso_millisecond(), date_time->iso_microsecond(), date_time->iso_nanosecond(), *calendar);
}
// 5.3.35 Temporal.PlainDateTime.prototype.valueOf ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.valueof
JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::value_of)
{

1
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h
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@ -38,6 +38,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(days_in_year_getter);
JS_DECLARE_NATIVE_FUNCTION(months_in_year_getter);
JS_DECLARE_NATIVE_FUNCTION(in_leap_year_getter);
JS_DECLARE_NATIVE_FUNCTION(with_calendar);
JS_DECLARE_NATIVE_FUNCTION(value_of);
JS_DECLARE_NATIVE_FUNCTION(to_plain_date);
JS_DECLARE_NATIVE_FUNCTION(get_iso_fields);

13
Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.withCalendar.js Normal file
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@ -0,0 +1,13 @@
describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.PlainDateTime.prototype.withCalendar).toHaveLength(1);
});
test("basic functionality", () => {
const calendar = { hello: "friends" };
const firstPlainDateTime = new Temporal.PlainDateTime(1, 2, 3);
expect(firstPlainDateTime.calendar).not.toBe(calendar);
const secondPlainDateTime = firstPlainDateTime.withCalendar(calendar);
expect(secondPlainDateTime.calendar).toBe(calendar);
});
});