1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 16:47:36 +00:00

LibJS: Implement Temporal.PlainYearMonth.prototype.with()

This commit is contained in:
Linus Groh 2021-11-08 21:23:53 +00:00
parent aca2ef9e1c
commit fa1d5feec0
3 changed files with 102 additions and 0 deletions

View file

@ -40,6 +40,7 @@ void PlainYearMonthPrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.eraYear, era_year_getter, {}, Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.with, with, 1, attr);
define_native_function(vm.names.equals, equals, 1, attr);
define_native_function(vm.names.toString, to_string, 0, attr);
define_native_function(vm.names.toLocaleString, to_locale_string, 0, attr);
@ -186,6 +187,49 @@ JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::era_year_getter)
return TRY(calendar_era_year(global_object, calendar, *plain_year_month));
}
// 9.3.11 Temporal.PlainYearMonth.prototype.with ( temporalYearMonthLike [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.with
JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::with)
{
auto temporal_year_month_like = vm.argument(0);
// 1. Let yearMonth be the this value.
// 2. Perform ? RequireInternalSlot(yearMonth, [[InitializedTemporalYearMonth]]).
auto* year_month = TRY(typed_this_object(global_object));
// 3. If Type(temporalYearMonthLike) is not Object, then
if (!temporal_year_month_like.is_object()) {
// a. Throw a TypeError exception.
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObject, temporal_year_month_like.to_string_without_side_effects());
}
// 4. Perform ? RejectObjectWithCalendarOrTimeZone(temporalYearMonthLike).
TRY(reject_object_with_calendar_or_time_zone(global_object, temporal_year_month_like.as_object()));
// 5. Let calendar be yearMonth.[[Calendar]].
auto& calendar = year_month->calendar();
// 6. Let fieldNames be ? CalendarFields(calendar, « "month", "monthCode", "year" »).
auto field_names = TRY(calendar_fields(global_object, calendar, { "month"sv, "monthCode"sv, "year"sv }));
// 7. Let partialYearMonth be ? PreparePartialTemporalFields(temporalYearMonthLike, fieldNames).
auto* partial_year_month = TRY(prepare_partial_temporal_fields(global_object, temporal_year_month_like.as_object(), field_names));
// 8. Set options to ? GetOptionsObject(options).
auto* options = TRY(get_options_object(global_object, vm.argument(1)));
// 9. Let fields be ? PrepareTemporalFields(yearMonth, fieldNames, «»).
auto* fields = TRY(prepare_temporal_fields(global_object, *year_month, field_names, {}));
// 10. Set fields to ? CalendarMergeFields(calendar, fields, partialYearMonth).
fields = TRY(calendar_merge_fields(global_object, calendar, *fields, *partial_year_month));
// 11. Set fields to ? PrepareTemporalFields(fields, fieldNames, «»).
fields = TRY(prepare_temporal_fields(global_object, *fields, field_names, {}));
// 12. Return ? YearMonthFromFields(calendar, fields, options).
return TRY(year_month_from_fields(global_object, calendar, *fields, options));
}
// 9.3.16 Temporal.PlainYearMonth.prototype.equals ( other ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.equals
JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::equals)
{

View file

@ -30,6 +30,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(in_leap_year_getter);
JS_DECLARE_NATIVE_FUNCTION(era_getter);
JS_DECLARE_NATIVE_FUNCTION(era_year_getter);
JS_DECLARE_NATIVE_FUNCTION(with);
JS_DECLARE_NATIVE_FUNCTION(equals);
JS_DECLARE_NATIVE_FUNCTION(to_string);
JS_DECLARE_NATIVE_FUNCTION(to_locale_string);

View file

@ -0,0 +1,57 @@
describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.PlainYearMonth.prototype.with).toHaveLength(1);
});
test("basic functionality", () => {
const plainYearMonth = new Temporal.PlainYearMonth(1970, 1);
const values = [
[{ year: 2021 }, new Temporal.PlainYearMonth(2021, 1)],
[{ year: 2021, month: 7 }, new Temporal.PlainYearMonth(2021, 7)],
[{ year: 2021, monthCode: "M07" }, new Temporal.PlainYearMonth(2021, 7)],
];
for (const [arg, expected] of values) {
expect(plainYearMonth.with(arg).equals(expected)).toBeTrue();
}
// Supplying the same values doesn't change the year/month, but still creates a new object
const plainYearMonthLike = { year: plainYearMonth.year, month: plainYearMonth.month };
expect(plainYearMonth.with(plainYearMonthLike)).not.toBe(plainYearMonth);
expect(plainYearMonth.with(plainYearMonthLike).equals(plainYearMonth)).toBeTrue();
});
});
describe("errors", () => {
test("this value must be a Temporal.PlainYearMonth object", () => {
expect(() => {
Temporal.PlainYearMonth.prototype.with.call("foo");
}).toThrowWithMessage(TypeError, "Not an object of type Temporal.PlainYearMonth");
});
test("argument must be an object", () => {
expect(() => {
new Temporal.PlainYearMonth(1970, 1).with("foo");
}).toThrowWithMessage(TypeError, "foo is not an object");
expect(() => {
new Temporal.PlainYearMonth(1970, 1).with(42);
}).toThrowWithMessage(TypeError, "42 is not an object");
});
test("argument must have one of 'month', 'monthCode', 'year'", () => {
expect(() => {
new Temporal.PlainYearMonth(1970, 1).with({});
}).toThrowWithMessage(
TypeError,
"Object must have at least one of the following properties: month, monthCode, year"
);
});
test("argument must not have 'calendar' or 'timeZone'", () => {
expect(() => {
new Temporal.PlainYearMonth(1970, 1).with({ calendar: {} });
}).toThrowWithMessage(TypeError, "Object must not have a defined calendar property");
expect(() => {
new Temporal.PlainYearMonth(1970, 1).with({ timeZone: {} });
}).toThrowWithMessage(TypeError, "Object must not have a defined timeZone property");
});
});