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LibJS: Implement Temporal.PlainDate.from
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07485802c6
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67b3255fe8
Notes:
sideshowbarker
2024-07-18 08:18:49 +09:00
Author: https://github.com/IdanHo Commit: https://github.com/SerenityOS/serenity/commit/67b3255fe84 Pull-request: https://github.com/SerenityOS/serenity/pull/9023 Reviewed-by: https://github.com/linusg ✅
@ -28,6 +28,7 @@ void PlainDateConstructor::initialize(GlobalObject& global_object)
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define_direct_property(vm.names.prototype, global_object.temporal_plain_date_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_native_function(vm.names.compare, compare, 2, attr);
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define_direct_property(vm.names.length, Value(3), Attribute::Configurable);
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@ -96,6 +97,30 @@ Value PlainDateConstructor::construct(FunctionObject& new_target)
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return create_temporal_date(global_object, y, m, d, *calendar, &new_target);
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}
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// 3.2.2 Temporal.PlainDate.from ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.from
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JS_DEFINE_NATIVE_FUNCTION(PlainDateConstructor::from)
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{
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// 1. Set options to ? GetOptionsObject(options).
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auto* options = get_options_object(global_object, vm.argument(1));
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if (vm.exception())
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return {};
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auto item = vm.argument(0);
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// 2. If Type(item) is Object and item has an [[InitializedTemporalDate]] internal slot, then
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if (item.is_object() && is<PlainDate>(item.as_object())) {
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auto& plain_date_item = static_cast<PlainDate&>(item.as_object());
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// a. Perform ? ToTemporalOverflow(options).
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(void)to_temporal_overflow(global_object, *options);
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if (vm.exception())
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return {};
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// b. Return ? CreateTemporalDate(item.[[ISOYear]], item.[[ISOMonth]], item.[[ISODay]], item.[[Calendar]]).
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return create_temporal_date(global_object, plain_date_item.iso_year(), plain_date_item.iso_month(), plain_date_item.iso_day(), plain_date_item.calendar());
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}
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// 3. Return ? ToTemporalDate(item, options).
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return to_temporal_date(global_object, item, options);
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}
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// 3.2.3 Temporal.PlainDate.compare ( one, two ), https://tc39.es/proposal-temporal/#sec-properties-of-the-temporal-plaindate-constructor
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JS_DEFINE_NATIVE_FUNCTION(PlainDateConstructor::compare)
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{
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@ -24,6 +24,7 @@ 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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JS_DECLARE_NATIVE_FUNCTION(compare);
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};
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@ -0,0 +1,21 @@
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.PlainDate.from).toHaveLength(1);
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});
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test("PlainDate instance argument", () => {
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const plainDate = new Temporal.PlainDate(2021, 7, 26);
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const createdPlainDate = Temporal.PlainDate.from(plainDate);
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expect(createdPlainDate.year).toBe(2021);
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expect(createdPlainDate.month).toBe(7);
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expect(createdPlainDate.day).toBe(26);
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});
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// Un-skip once ParseISODateTime & ParseTemporalDateString are implemented
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test.skip("PlainDate string argument", () => {
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const createdPlainDate = Temporal.PlainDate.from("2021-07-26");
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expect(createdPlainDate.year).toBe(2021);
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expect(createdPlainDate.month).toBe(7);
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expect(createdPlainDate.day).toBe(26);
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});
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});
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