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LibJS: Implement Temporal.PlainDate.prototype.year
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6 changed files with 55 additions and 0 deletions
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@ -166,6 +166,7 @@
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M(StringNonGlobalRegExp, "RegExp argument is non-global") \
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M(StringRawCannotConvert, "Cannot convert property 'raw' to object from {}") \
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M(StringRepeatCountMustBe, "repeat count must be a {} number") \
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M(TemporalInvalidCalendarFunctionResult, "Invalid calendar, {}() function returned undefined") \
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M(TemporalInvalidCalendarIdentifier, "Invalid calendar identifier '{}'") \
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M(TemporalInvalidDuration, "Invalid duration") \
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M(TemporalInvalidDurationLikeObject, "Invalid duration-like object") \
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@ -119,6 +119,27 @@ Vector<String> calendar_fields(GlobalObject& global_object, Object& calendar, Ve
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return result;
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}
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// 12.1.9 CalendarYear ( calendar, dateLike ), https://tc39.es/proposal-temporal/#sec-temporal-calendaryear
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double calendar_year(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. Let result be ? Invoke(calendar, "year", « dateLike »).
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auto result = calendar.invoke(vm.names.year, &date_like);
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if (vm.exception())
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return {};
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// 3. If result is undefined, throw a RangeError exception.
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if (result.is_undefined()) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidCalendarFunctionResult, vm.names.year.as_string());
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return {};
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}
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// 4. Return ? ToIntegerOrInfinity(result).
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return result.to_integer_or_infinity(global_object);
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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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@ -34,6 +34,7 @@ bool is_builtin_calendar(String const& identifier);
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Calendar* get_builtin_calendar(GlobalObject&, String const& identifier);
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Calendar* get_iso8601_calendar(GlobalObject&);
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Vector<String> calendar_fields(GlobalObject&, Object& calendar, Vector<StringView> const& field_names);
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double calendar_year(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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@ -27,6 +27,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Temporal.PlainDate"), Attribute::Configurable);
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define_native_accessor(vm.names.calendar, calendar_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.year, year_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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@ -60,6 +61,22 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::calendar_getter)
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return Value(&temporal_date->calendar());
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}
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// 3.3.4 get Temporal.PlainDate.prototype.year, https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.year
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JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::year_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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// 4. Return ? CalendarYear(calendar, temporalDate).
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return Value(calendar_year(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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@ -20,6 +20,7 @@ public:
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private:
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JS_DECLARE_NATIVE_FUNCTION(calendar_getter);
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JS_DECLARE_NATIVE_FUNCTION(year_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.year).toBe(2021);
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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, "year", "foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.PlainDate");
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});
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});
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