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LibJS: Implement Temporal.Calendar.from()
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3 changed files with 35 additions and 0 deletions
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@ -25,6 +25,9 @@ void CalendarConstructor::initialize(GlobalObject& global_object)
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// 12.3.1 Temporal.Calendar.prototype, https://tc39.es/proposal-temporal/#sec-temporal-calendar-prototype
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define_direct_property(vm.names.prototype, global_object.temporal_calendar_prototype(), 0);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.from, from, 1, attr);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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@ -61,4 +64,13 @@ Value CalendarConstructor::construct(FunctionObject& new_target)
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return create_temporal_calendar(global_object, identifier, &new_target);
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}
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// 12.3.2 Temporal.Calendar.from ( item ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.from
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JS_DEFINE_NATIVE_FUNCTION(CalendarConstructor::from)
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{
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auto item = vm.argument(0);
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// 1. Return ? ToTemporalCalendar(item).
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return to_temporal_calendar(global_object, item);
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}
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}
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@ -23,6 +23,8 @@ public:
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private:
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virtual bool has_constructor() const override { return true; }
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JS_DECLARE_NATIVE_FUNCTION(from);
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};
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}
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@ -0,0 +1,21 @@
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describe("normal behavior", () => {
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test("length is 1", () => {
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expect(Temporal.Calendar.from).toHaveLength(1);
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});
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test("basic functionality", () => {
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const plainDate = new Temporal.PlainDate(1970, 1, 1);
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const plainTime = new Temporal.PlainTime();
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const plainDateTime = new Temporal.PlainDateTime(1970, 1, 1);
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// TODO: PlainMonthDay, PlainYearMonth, ZonedDateTime
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const calendarLike = {};
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const withCalendarLike = { calendar: {} };
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expect(Temporal.Calendar.from(plainDate)).toBe(plainDate.calendar);
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expect(Temporal.Calendar.from(plainTime)).toBe(plainTime.calendar);
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expect(Temporal.Calendar.from(plainDateTime)).toBe(plainDateTime.calendar);
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expect(Temporal.Calendar.from(calendarLike)).toBe(calendarLike);
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expect(Temporal.Calendar.from(withCalendarLike)).toBe(withCalendarLike.calendar);
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expect(Temporal.Calendar.from("iso8601").id).toBe("iso8601");
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// TODO: test Temporal.Calendar.from("TemporalCalendarString") once ParseTemporalCalendarString is working
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});
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});
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