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LibJS: Implement Temporal.PlainYearMonth.prototype.month

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This commit is contained in:
Linus Groh 2021-08-07 23:13:45 +01:00
parent c947ba9ed9
commit 0edec6578b
Notes: sideshowbarker 2024-07-18 07:13:13 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/0edec6578b8
Pull-request: https://github.com/SerenityOS/serenity/pull/9273
Reviewed-by: https://github.com/IdanHo ✅
3 changed files with 32 additions and 0 deletions
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17
Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthPrototype.cpp
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@ -29,6 +29,7 @@ void PlainYearMonthPrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.calendar, calendar_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.year, year_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.month, month_getter, {}, Attribute::Configurable);
}
static PlainYearMonth* typed_this(GlobalObject& global_object)
@ -73,4 +74,20 @@ JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::year_getter)
return Value(calendar_year(global_object, calendar, *year_month));
}
// 9.3.5 get Temporal.PlainYearMonth.prototype.month, https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.month
JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::month_getter)
{
// 1. Let yearMonth be the this value.
// 2. Perform ? RequireInternalSlot(yearMonth, [[InitializedTemporalYearMonth]]).
auto* year_month = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let calendar be yearMonth.[[Calendar]].
auto& calendar = year_month->calendar();
// 4. Return 𝔽(? CalendarMonth(calendar, yearMonth)).
return Value(calendar_month(global_object, calendar, *year_month));
}
}

1
Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonthPrototype.h
View file

@ -21,6 +21,7 @@ public:
private:
JS_DECLARE_NATIVE_FUNCTION(calendar_getter);
JS_DECLARE_NATIVE_FUNCTION(year_getter);
JS_DECLARE_NATIVE_FUNCTION(month_getter);
};
}

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