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LibJS: Implement Temporal.PlainDate.prototype.month
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5 changed files with 54 additions and 0 deletions
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@ -140,6 +140,27 @@ double calendar_year(GlobalObject& global_object, Object& calendar, Object& date
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return result.to_integer_or_infinity(global_object);
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}
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// 12.1.10 CalendarMonth ( calendar, dateLike ), https://tc39.es/proposal-temporal/#sec-temporal-calendarmonth
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double calendar_month(GlobalObject& global_object, Object& calendar, Object& date_like)
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{
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auto& vm = global_object.vm();
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// 1. Assert: Type(calendar) is Object.
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// 2. Let result be ? Invoke(calendar, "month", « dateLike »).
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auto result = calendar.invoke(vm.names.month, &date_like);
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if (vm.exception())
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return {};
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// 3. If result is undefined, throw a RangeError exception.
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if (result.is_undefined()) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidCalendarFunctionResult, vm.names.month.as_string());
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return {};
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}
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// 4. Return ? ToPositiveIntegerOrInfinity(result).
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return to_positive_integer_or_infinity(global_object, result);
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}
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// 12.1.21 ToTemporalCalendar ( temporalCalendarLike ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalcalendar
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Object* to_temporal_calendar(GlobalObject& global_object, Value temporal_calendar_like)
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{
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@ -35,6 +35,7 @@ Calendar* get_builtin_calendar(GlobalObject&, String const& identifier);
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Calendar* get_iso8601_calendar(GlobalObject&);
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Vector<String> calendar_fields(GlobalObject&, Object& calendar, Vector<StringView> const& field_names);
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double calendar_year(GlobalObject&, Object& calendar, Object& date_like);
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double calendar_month(GlobalObject&, Object& calendar, Object& date_like);
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Object* to_temporal_calendar(GlobalObject&, Value);
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Object* to_temporal_calendar_with_iso_default(GlobalObject&, Value);
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Object* get_temporal_calendar_with_iso_default(GlobalObject&, Object&);
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@ -28,6 +28,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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define_native_accessor(vm.names.calendar, calendar_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.year, year_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.month, month_getter, {}, Attribute::Configurable);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.withCalendar, with_calendar, 1, attr);
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@ -77,6 +78,22 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::year_getter)
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return Value(calendar_year(global_object, calendar, *temporal_date));
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}
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// 3.3.5 get Temporal.PlainDate.prototype.month, https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.month
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::month_getter)
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{
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// 1. Let temporalDate be the this value.
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// 2. Perform ? RequireInternalSlot(temporalDate, [[InitializedTemporalDate]]).
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auto* temporal_date = typed_this(global_object);
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if (vm.exception())
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return {};
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// 3. Let calendar be temporalDate.[[Calendar]].
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auto& calendar = temporal_date->calendar();
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// 4. Return ? CalendarMonth(calendar, temporalDate).
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return Value(calendar_month(global_object, calendar, *temporal_date));
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}
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// 3.3.22 Temporal.PlainDate.prototype.withCalendar ( calendar ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.withcalendar
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::with_calendar)
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{
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@ -21,6 +21,7 @@ public:
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private:
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JS_DECLARE_NATIVE_FUNCTION(calendar_getter);
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JS_DECLARE_NATIVE_FUNCTION(year_getter);
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JS_DECLARE_NATIVE_FUNCTION(month_getter);
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JS_DECLARE_NATIVE_FUNCTION(with_calendar);
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JS_DECLARE_NATIVE_FUNCTION(equals);
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@ -0,0 +1,14 @@
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describe("correct behavior", () => {
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test("basic functionality", () => {
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const date = new Temporal.PlainDate(2021, 7, 23);
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expect(date.month).toBe(7);
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});
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});
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test("errors", () => {
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test("this value must be a Temporal.PlainDate object", () => {
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expect(() => {
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Reflect.get(Temporal.PlainDate.prototype, "month", "foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.PlainDate");
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});
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});
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