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LibJS: Implement Temporal.PlainDateTime.prototype.inLeapYear

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Idan Horowitz 2021-07-30 00:26:55 +03:00 committed by Linus Groh
parent b9ed19c850
commit 8f9b4a5ea6
Notes: sideshowbarker 2024-07-18 07:45:33 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/8f9b4a5ea6a
Pull-request: https://github.com/SerenityOS/serenity/pull/9097
Reviewed-by: https://github.com/linusg ✅
3 changed files with 32 additions and 0 deletions
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17
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp
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@ -45,6 +45,7 @@ void PlainDateTimePrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.daysInMonth, days_in_month_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.daysInYear, days_in_year_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.monthsInYear, months_in_year_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.inLeapYear, in_leap_year_getter, {}, Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.valueOf, value_of, 0, attr);
@ -332,6 +333,22 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::months_in_year_getter)
return calendar_months_in_year(global_object, calendar, *date_time);
}
// 5.3.21 get Temporal.PlainDateTime.prototype.inLeapYear, https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.inleapyear
JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::in_leap_year_getter)
{
// 1. Let dateTime be the this value.
// 2. Perform ? RequireInternalSlot(dateTime, [[InitializedTemporalDateTime]]).
auto* date_time = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let calendar be dateTime.[[Calendar]].
auto& calendar = date_time->calendar();
// 4. Return ? CalendarInLeapYear(calendar, dateTime).
return calendar_in_leap_year(global_object, calendar, *date_time);
}
// 5.3.35 Temporal.PlainDateTime.prototype.valueOf ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.valueof
JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::value_of)
{

1
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h
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@ -37,6 +37,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(days_in_month_getter);
JS_DECLARE_NATIVE_FUNCTION(days_in_year_getter);
JS_DECLARE_NATIVE_FUNCTION(months_in_year_getter);
JS_DECLARE_NATIVE_FUNCTION(in_leap_year_getter);
JS_DECLARE_NATIVE_FUNCTION(value_of);
JS_DECLARE_NATIVE_FUNCTION(to_plain_date);
JS_DECLARE_NATIVE_FUNCTION(get_iso_fields);

14
Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.inLeapYear.js Normal file
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@ -0,0 +1,14 @@
describe("correct behavior", () => {
test("basic functionality", () => {
const plainDateTime = new Temporal.PlainDateTime(2021, 7, 30);
expect(plainDateTime.inLeapYear).toBeFalse();
});
});
test("errors", () => {
test("this value must be a Temporal.PlainDateTime object", () => {
expect(() => {
Reflect.get(Temporal.PlainDateTime.prototype, "inLeapYear", "foo");
}).toThrowWithMessage(TypeError, "Not a Temporal.PlainDateTime");
});
});