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LibJS: Implement Temporal.PlainMonthDay.prototype.monthCode

This commit is contained in:
Linus Groh 2021-08-15 00:40:49 +01:00
parent 1382be1707
commit 9551aa17d3
3 changed files with 33 additions and 0 deletions

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@ -6,6 +6,7 @@
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/PlainMonthDay.h>
#include <LibJS/Runtime/Temporal/PlainMonthDayPrototype.h>
@ -27,6 +28,7 @@ void PlainMonthDayPrototype::initialize(GlobalObject& global_object)
define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm, "Temporal.PlainMonthDay"), Attribute::Configurable);
define_native_accessor(vm.names.calendar, calendar_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.monthCode, month_code_getter, {}, Attribute::Configurable);
}
static PlainMonthDay* typed_this(GlobalObject& global_object)
@ -55,4 +57,20 @@ JS_DEFINE_NATIVE_FUNCTION(PlainMonthDayPrototype::calendar_getter)
return Value(&plain_month_day->calendar());
}
// 10.3.4 get Temporal.PlainMonthDay.prototype.monthCode, https://tc39.es/proposal-temporal/#sec-get-temporal.plainmonthday.prototype.monthcode
JS_DEFINE_NATIVE_FUNCTION(PlainMonthDayPrototype::month_code_getter)
{
// 1. Let monthDay be the this value.
// 2. Perform ? RequireInternalSlot(monthDay, [[InitializedTemporalMonthDay]]).
auto* month_day = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let calendar be monthDay.[[Calendar]].
auto& calendar = month_day->calendar();
// 4. Return ? CalendarMonthCode(calendar, monthDay).
return js_string(vm, calendar_month_code(global_object, calendar, *month_day));
}
}

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@ -20,6 +20,7 @@ public:
private:
JS_DECLARE_NATIVE_FUNCTION(calendar_getter);
JS_DECLARE_NATIVE_FUNCTION(month_code_getter);
};
}

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@ -0,0 +1,14 @@
describe("correct behavior", () => {
test("basic functionality", () => {
const plainMonthDay = new Temporal.PlainMonthDay(7, 6);
expect(plainMonthDay.monthCode).toBe("M07");
});
});
describe("errors", () => {
test("this value must be a Temporal.PlainMonthDay object", () => {
expect(() => {
Reflect.get(Temporal.PlainMonthDay.prototype, "monthCode", "foo");
}).toThrowWithMessage(TypeError, "Not a Temporal.PlainMonthDay");
});
});