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LibJS: Implement Temporal.PlainDate.prototype.add()
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@ -53,6 +53,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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define_native_function(vm.names.toPlainYearMonth, to_plain_year_month, 0, attr);
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define_native_function(vm.names.toPlainMonthDay, to_plain_month_day, 0, attr);
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define_native_function(vm.names.getISOFields, get_iso_fields, 0, attr);
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define_native_function(vm.names.add, add, 1, attr);
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define_native_function(vm.names.withCalendar, with_calendar, 1, attr);
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define_native_function(vm.names.equals, equals, 1, attr);
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define_native_function(vm.names.toPlainDateTime, to_plain_date_time, 0, attr);
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@ -335,6 +336,23 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::get_iso_fields)
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return fields;
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}
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// 3.3.19 Temporal.PlainDate.prototype.add ( temporalDurationLike [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.add
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::add)
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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 = TRY(typed_this_object(global_object));
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// 3. Let duration be ? ToTemporalDuration(temporalDurationLike).
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auto* duration = TRY(to_temporal_duration(global_object, vm.argument(0)));
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// 4. Set options to ? GetOptionsObject(options).
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auto* options = TRY(get_options_object(global_object, vm.argument(1)));
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// 5. Return ? CalendarDateAdd(temporalDate.[[Calendar]], temporalDate, duration, options).
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return TRY(calendar_date_add(global_object, temporal_date->calendar(), *temporal_date, *duration, options));
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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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@ -38,6 +38,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(to_plain_year_month);
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JS_DECLARE_NATIVE_FUNCTION(to_plain_month_day);
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JS_DECLARE_NATIVE_FUNCTION(get_iso_fields);
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JS_DECLARE_NATIVE_FUNCTION(add);
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JS_DECLARE_NATIVE_FUNCTION(with_calendar);
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JS_DECLARE_NATIVE_FUNCTION(equals);
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JS_DECLARE_NATIVE_FUNCTION(to_plain_date_time);
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@ -0,0 +1,19 @@
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.PlainDate.prototype.add).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 result = plainDate.add(new Temporal.Duration(51, 6, 0, 5));
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expect(result.equals(new Temporal.PlainDate(2021, 7, 6))).toBeTrue();
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});
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});
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describe("errors", () => {
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test("this value must be a Temporal.PlainDate object", () => {
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expect(() => {
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Temporal.PlainDate.prototype.add.call("foo");
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}).toThrowWithMessage(TypeError, "Not an object of type Temporal.PlainDate");
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});
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});
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