diff options
3 files changed, 42 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp index b29c1d78a9..4b595744ff 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp +++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.cpp @@ -6,6 +6,7 @@ #include <AK/TypeCasts.h> #include <LibJS/Runtime/GlobalObject.h> +#include <LibJS/Runtime/Temporal/AbstractOperations.h> #include <LibJS/Runtime/Temporal/Calendar.h> #include <LibJS/Runtime/Temporal/PlainDate.h> #include <LibJS/Runtime/Temporal/PlainDateTime.h> @@ -54,6 +55,7 @@ void PlainDateTimePrototype::initialize(GlobalObject& global_object) define_native_function(vm.names.withCalendar, with_calendar, 1, attr); define_native_function(vm.names.valueOf, value_of, 0, attr); define_native_function(vm.names.toPlainDate, to_plain_date, 0, attr); + define_native_function(vm.names.toPlainYearMonth, to_plain_year_month, 0, attr); define_native_function(vm.names.toPlainTime, to_plain_time, 0, attr); define_native_function(vm.names.getISOFields, get_iso_fields, 0, attr); } @@ -416,6 +418,32 @@ JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::to_plain_date) return create_temporal_date(global_object, date_time->iso_year(), date_time->iso_month(), date_time->iso_day(), date_time->calendar()); } +// 5.3.38 Temporal.PlainDateTime.prototype.toPlainYearMonth ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplainyearmonth +JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::to_plain_year_month) +{ + // 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. Let fieldNames be ? CalendarFields(calendar, « "monthCode", "year" »). + auto field_names = calendar_fields(global_object, calendar, { "monthCode"sv, "year"sv }); + if (vm.exception()) + return {}; + + // 5. Let fields be ? PrepareTemporalFields(dateTime, fieldNames, «»). + auto* fields = prepare_temporal_fields(global_object, *date_time, field_names, {}); + if (vm.exception()) + return {}; + + // 6. Return ? YearMonthFromFields(calendar, fields). + return year_month_from_fields(global_object, calendar, *fields); +} + // 5.3.40 Temporal.PlainDateTime.prototype.toPlainTime ( ), https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplaintime JS_DEFINE_NATIVE_FUNCTION(PlainDateTimePrototype::to_plain_time) { diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h index ee541c62ba..4d377cdf04 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h +++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTimePrototype.h @@ -42,6 +42,7 @@ private: JS_DECLARE_NATIVE_FUNCTION(with_calendar); JS_DECLARE_NATIVE_FUNCTION(value_of); JS_DECLARE_NATIVE_FUNCTION(to_plain_date); + JS_DECLARE_NATIVE_FUNCTION(to_plain_year_month); JS_DECLARE_NATIVE_FUNCTION(to_plain_time); JS_DECLARE_NATIVE_FUNCTION(get_iso_fields); }; diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.toPlainYearMonth.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.toPlainYearMonth.js new file mode 100644 index 0000000000..023470357d --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.toPlainYearMonth.js @@ -0,0 +1,13 @@ +describe("correct behavior", () => { + test("length is 0", () => { + expect(Temporal.PlainDateTime.prototype.toPlainYearMonth).toHaveLength(0); + }); + + test("basic functionality", () => { + const plainDateTime = new Temporal.PlainDateTime(2021, 7, 6, 18, 14, 47); + const plainYearMonth = plainDateTime.toPlainYearMonth(); + expect(plainYearMonth.calendar).toBe(plainDateTime.calendar); + expect(plainYearMonth.year).toBe(2021); + expect(plainYearMonth.month).toBe(7); + }); +}); |