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-rw-r--r--Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp24
-rw-r--r--Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h1
-rw-r--r--Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp17
-rw-r--r--Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.h1
-rw-r--r--Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.era.js24
5 files changed, 67 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
index 7216391c05..c09bb580cd 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
@@ -288,6 +288,30 @@ Value calendar_in_leap_year(GlobalObject& global_object, Object& calendar, Objec
return Value(&calendar).invoke(global_object, vm.names.inLeapYear, &date_like);
}
+// 15.6.1.2 CalendarEra ( calendar, dateLike ), https://tc39.es/proposal-temporal/#sec-temporal-calendarera
+Value calendar_era(GlobalObject& global_object, Object& calendar, Object& date_like)
+{
+ auto& vm = global_object.vm();
+
+ // 1. Assert: Type(calendar) is Object.
+
+ // 2. Let result be ? Invoke(calendar, "era", ยซ dateLike ยป).
+ auto result = Value(&calendar).invoke(global_object, vm.names.era, &date_like);
+ if (vm.exception())
+ return {};
+
+ // 3. If result is not undefined, set result to ? ToString(result).
+ if (!result.is_undefined()) {
+ auto result_string = result.to_string(global_object);
+ if (vm.exception())
+ return {};
+ result = js_string(vm, move(result_string));
+ }
+
+ // 4. Return result.
+ return result;
+}
+
// 12.1.21 ToTemporalCalendar ( temporalCalendarLike ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalcalendar
Object* to_temporal_calendar(GlobalObject& global_object, Value temporal_calendar_like)
{
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
index 7e7d96082e..bc650c5050 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
@@ -46,6 +46,7 @@ Value calendar_days_in_month(GlobalObject&, Object& calendar, Object& date_like)
Value calendar_days_in_year(GlobalObject&, Object& calendar, Object& date_like);
Value calendar_months_in_year(GlobalObject&, Object& calendar, Object& date_like);
Value calendar_in_leap_year(GlobalObject&, Object& calendar, Object& date_like);
+Value calendar_era(GlobalObject&, Object& calendar, Object& date_like);
Object* to_temporal_calendar(GlobalObject&, Value);
Object* to_temporal_calendar_with_iso_default(GlobalObject&, Value);
Object* get_temporal_calendar_with_iso_default(GlobalObject&, Object&);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
index 10de6519be..bb34a836f0 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.cpp
@@ -46,6 +46,7 @@ void PlainDatePrototype::initialize(GlobalObject& global_object)
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);
+ define_native_accessor(vm.names.era, era_getter, {}, Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.toPlainYearMonth, to_plain_year_month, 0, attr);
@@ -278,6 +279,22 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::in_leap_year_getter)
return Value(calendar_in_leap_year(global_object, calendar, *temporal_date));
}
+// 15.6.5.2 get Temporal.PlainDate.prototype.era, https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.era
+JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::era_getter)
+{
+ // 1. Let plainDate be the this value.
+ // 2. Perform ? RequireInternalSlot(plainDate, [[InitializedTemporalDate]]).
+ auto* plain_date = typed_this(global_object);
+ if (vm.exception())
+ return {};
+
+ // 3. Let calendar be plainDate.[[Calendar]].
+ auto& calendar = plain_date->calendar();
+
+ // 4. Return ? CalendarEra(calendar, plainDate).
+ return calendar_era(global_object, calendar, *plain_date);
+}
+
// 3.3.16 Temporal.PlainDate.prototype.toPlainYearMonth ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.toplainyearmonth
JS_DEFINE_NATIVE_FUNCTION(PlainDatePrototype::to_plain_year_month)
{
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.h
index d8021d5c02..761cac41b6 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDatePrototype.h
@@ -32,6 +32,7 @@ private:
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(era_getter);
JS_DECLARE_NATIVE_FUNCTION(to_plain_year_month);
JS_DECLARE_NATIVE_FUNCTION(to_plain_month_day);
JS_DECLARE_NATIVE_FUNCTION(get_iso_fields);
diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.era.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.era.js
new file mode 100644
index 0000000000..f0f43dacc6
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.era.js
@@ -0,0 +1,24 @@
+describe("correct behavior", () => {
+ test("basic functionality", () => {
+ const plainDate = new Temporal.PlainDate(2021, 7, 6);
+ expect(plainDate.era).toBeUndefined();
+ });
+
+ test("calendar with custom era function", () => {
+ const calendar = {
+ era() {
+ return "foo";
+ },
+ };
+ const plainDate = new Temporal.PlainDate(2021, 7, 6, calendar);
+ expect(plainDate.era).toBe("foo");
+ });
+});
+
+describe("errors", () => {
+ test("this value must be a Temporal.PlainDate object", () => {
+ expect(() => {
+ Reflect.get(Temporal.PlainDate.prototype, "era", "foo");
+ }).toThrowWithMessage(TypeError, "Not a Temporal.PlainDate");
+ });
+});