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LibJS: Implement Temporal.PlainDate.prototype.dayOfWeek
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5 changed files with 43 additions and 0 deletions
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@ -203,6 +203,16 @@ double calendar_day(GlobalObject& global_object, Object& calendar, Object& date_
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return to_positive_integer_or_infinity(global_object, result);
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}
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// 12.1.13 CalendarDayOfWeek ( calendar, dateLike ), https://tc39.es/proposal-temporal/#sec-temporal-calendardayofweek
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Value calendar_day_of_week(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. Return ? Invoke(calendar, "dayOfWeek", « dateLike »).
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return calendar.invoke(vm.names.dayOfWeek, &date_like);
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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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@ -38,6 +38,7 @@ 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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String calendar_month_code(GlobalObject&, Object& calendar, Object& date_like);
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double calendar_day(GlobalObject&, Object& calendar, Object& date_like);
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Value calendar_day_of_week(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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@ -31,6 +31,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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define_native_accessor(vm.names.month, month_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.monthCode, month_code_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.day, day_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.dayOfWeek, day_of_week_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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@ -128,6 +129,22 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::day_getter)
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return Value(calendar_day(global_object, calendar, *temporal_date));
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}
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// 3.3.8 get Temporal.PlainDate.prototype.dayOfWeek, https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.dayofweek
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::day_of_week_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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// Return ? CalendarDayOfWeek(calendar, temporalDate).
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return Value(calendar_day_of_week(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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@ -24,6 +24,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(month_getter);
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JS_DECLARE_NATIVE_FUNCTION(month_code_getter);
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JS_DECLARE_NATIVE_FUNCTION(day_getter);
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JS_DECLARE_NATIVE_FUNCTION(day_of_week_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.dayOfWeek).toBe(5);
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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, "dayOfWeek", "foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.PlainDate");
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});
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});
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