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LibJS: Implement Temporal.PlainDate.prototype.getISOFields()
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -41,6 +42,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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define_native_accessor(vm.names.inLeapYear, in_leap_year_getter, {}, Attribute::Configurable);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.getISOFields, get_iso_fields, 0, 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.valueOf, value_of, 0, attr);
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@ -264,6 +266,34 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::in_leap_year_getter)
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return Value(calendar_in_leap_year(global_object, calendar, *temporal_date));
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}
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// 3.3.18 Temporal.PlainDate.prototype.getISOFields ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.getisofields
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::get_iso_fields)
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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 fields be ! OrdinaryObjectCreate(%Object.prototype%).
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auto* fields = Object::create(global_object, global_object.object_prototype());
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// 4. Perform ! CreateDataPropertyOrThrow(fields, "calendar", temporalDate.[[Calendar]]).
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fields->create_data_property_or_throw(vm.names.calendar, Value(&temporal_date->calendar()));
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// 5. Perform ! CreateDataPropertyOrThrow(fields, "isoDay", 𝔽(temporalDate.[[ISODay]])).
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fields->create_data_property_or_throw(vm.names.isoDay, Value(temporal_date->iso_day()));
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// 6. Perform ! CreateDataPropertyOrThrow(fields, "isoMonth", 𝔽(temporalDate.[[ISOMonth]])).
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fields->create_data_property_or_throw(vm.names.isoMonth, Value(temporal_date->iso_month()));
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// 7. Perform ! CreateDataPropertyOrThrow(fields, "isoYear", 𝔽(temporalDate.[[ISOYear]])).
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fields->create_data_property_or_throw(vm.names.isoYear, Value(temporal_date->iso_year()));
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// 8. Return fields.
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return fields;
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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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@ -33,6 +33,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(months_in_year_getter);
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JS_DECLARE_NATIVE_FUNCTION(in_leap_year_getter);
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JS_DECLARE_NATIVE_FUNCTION(get_iso_fields);
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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(value_of);
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@ -0,0 +1,19 @@
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describe("normal behavior", () => {
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test("length is 0", () => {
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expect(Temporal.PlainDate.prototype.getISOFields).toHaveLength(0);
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});
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test("basic functionality", () => {
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const calendar = new Temporal.Calendar("iso8601");
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const plainDate = new Temporal.PlainDate(2021, 7, 29, calendar);
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const fields = plainDate.getISOFields();
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expect(fields).toEqual({ calendar, isoDay: 29, isoMonth: 7, isoYear: 2021 });
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// Test field order
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expect(Object.getOwnPropertyNames(fields)).toEqual([
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"calendar",
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"isoDay",
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"isoMonth",
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"isoYear",
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]);
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});
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});
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