From c001926752a5d321ab9b242d9b20d89341cab290 Mon Sep 17 00:00:00 2001 From: Luke Wilde Date: Wed, 3 Nov 2021 20:22:55 +0000 Subject: [PATCH] LibJS: Implement Temporal.ZonedDateTime.prototype.startOfDay --- .../LibJS/Runtime/CommonPropertyNames.h | 1 + .../Temporal/ZonedDateTimePrototype.cpp | 30 +++++++++++++ .../Runtime/Temporal/ZonedDateTimePrototype.h | 1 + .../ZonedDateTime.prototype.startOfDay.js | 45 +++++++++++++++++++ 4 files changed, 77 insertions(+) create mode 100644 Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.startOfDay.js diff --git a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h index 5b627a7f86..e7e8e95bac 100644 --- a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h +++ b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h @@ -416,6 +416,7 @@ namespace JS { P(source) \ P(splice) \ P(sqrt) \ + P(startOfDay) \ P(startsWith) \ P(status) \ P(sticky) \ diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp index c892548a88..8043106947 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp +++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp @@ -65,6 +65,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object) u8 attr = Attribute::Writable | Attribute::Configurable; define_native_function(vm.names.valueOf, value_of, 0, attr); + define_native_function(vm.names.startOfDay, start_of_day, 0, attr); define_native_function(vm.names.toInstant, to_instant, 0, attr); define_native_function(vm.names.toPlainDate, to_plain_date, 0, attr); define_native_function(vm.names.toPlainTime, to_plain_time, 0, attr); @@ -708,6 +709,35 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::value_of) return vm.throw_completion(global_object, ErrorType::Convert, "Temporal.ZonedDateTime", "a primitive value"); } +// 6.3.45 Temporal.ZonedDateTime.prototype.startOfDay ( ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.startofday +JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::start_of_day) +{ + // 1. Let zonedDateTime be the this value. + // 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]). + auto* zoned_date_time = TRY(typed_this_object(global_object)); + + // 3. Let timeZone be zonedDateTime.[[TimeZone]]. + auto& time_zone = zoned_date_time->time_zone(); + + // 4. Let calendar be zonedDateTime.[[Calendar]]. + auto& calendar = zoned_date_time->calendar(); + + // 5. Let instant be ! CreateTemporalInstant(zonedDateTime.[[Nanoseconds]]). + auto* instant = MUST(create_temporal_instant(global_object, zoned_date_time->nanoseconds())); + + // 6. Let temporalDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, calendar). + auto* temporal_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &time_zone, *instant, calendar)); + + // 7. Let startDateTime be ? CreateTemporalDateTime(temporalDateTime.[[ISOYear]], temporalDateTime.[[ISOMonth]], temporalDateTime.[[ISODay]], 0, 0, 0, 0, 0, 0, calendar). + auto* start_date_time = TRY(create_temporal_date_time(global_object, temporal_date_time->iso_year(), temporal_date_time->iso_month(), temporal_date_time->iso_day(), 0, 0, 0, 0, 0, 0, calendar)); + + // 8. Let startInstant be ? BuiltinTimeZoneGetInstantFor(timeZone, startDateTime, "compatible"). + auto* start_instant = TRY(builtin_time_zone_get_instant_for(global_object, &time_zone, *start_date_time, "compatible"sv)); + + // 9. Return ! CreateTemporalZonedDateTime(startInstant.[[Nanoseconds]], timeZone, calendar). + return MUST(create_temporal_zoned_date_time(global_object, start_instant->nanoseconds(), time_zone, calendar)); +} + // 6.3.46 Temporal.ZonedDateTime.prototype.toInstant ( ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toinstant JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::to_instant) { diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h index e1e0f40c4e..8941100327 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h +++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h @@ -50,6 +50,7 @@ private: JS_DECLARE_NATIVE_FUNCTION(era_getter); JS_DECLARE_NATIVE_FUNCTION(era_year_getter); JS_DECLARE_NATIVE_FUNCTION(value_of); + JS_DECLARE_NATIVE_FUNCTION(start_of_day); JS_DECLARE_NATIVE_FUNCTION(to_instant); JS_DECLARE_NATIVE_FUNCTION(to_plain_date); JS_DECLARE_NATIVE_FUNCTION(to_plain_time); diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.startOfDay.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.startOfDay.js new file mode 100644 index 0000000000..d95402e5e0 --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.startOfDay.js @@ -0,0 +1,45 @@ +describe("correct behavior", () => { + test("length is 0", () => { + expect(Temporal.ZonedDateTime.prototype.startOfDay).toHaveLength(0); + }); + + test("basic functionality", () => { + const plainDateTime = new Temporal.PlainDateTime(2021, 11, 3, 20, 9, 45, 100, 200, 300); + const timeZone = new Temporal.TimeZone("UTC"); + const zonedDateTime = plainDateTime.toZonedDateTime(timeZone); + const startOfDayZonedDateTime = zonedDateTime.startOfDay(); + + expect(startOfDayZonedDateTime.epochNanoseconds).toBe(1635897600000000000n); + expect(startOfDayZonedDateTime.epochMicroseconds).toBe(1635897600000000n); + expect(startOfDayZonedDateTime.epochMilliseconds).toBe(1635897600000); + expect(startOfDayZonedDateTime.epochSeconds).toBe(1635897600); + expect(startOfDayZonedDateTime.year).toBe(2021); + expect(startOfDayZonedDateTime.month).toBe(11); + expect(startOfDayZonedDateTime.monthCode).toBe("M11"); + expect(startOfDayZonedDateTime.day).toBe(3); + expect(startOfDayZonedDateTime.hour).toBe(0); + expect(startOfDayZonedDateTime.minute).toBe(0); + expect(startOfDayZonedDateTime.second).toBe(0); + expect(startOfDayZonedDateTime.millisecond).toBe(0); + expect(startOfDayZonedDateTime.microsecond).toBe(0); + expect(startOfDayZonedDateTime.nanosecond).toBe(0); + expect(startOfDayZonedDateTime.dayOfWeek).toBe(3); + expect(startOfDayZonedDateTime.dayOfYear).toBe(307); + expect(startOfDayZonedDateTime.weekOfYear).toBe(44); + expect(startOfDayZonedDateTime.hoursInDay).toBe(24); + expect(startOfDayZonedDateTime.daysInWeek).toBe(7); + expect(startOfDayZonedDateTime.daysInYear).toBe(365); + expect(startOfDayZonedDateTime.monthsInYear).toBe(12); + expect(startOfDayZonedDateTime.inLeapYear).toBeFalse(); + expect(startOfDayZonedDateTime.offset).toBe("+00:00"); + expect(startOfDayZonedDateTime.offsetNanoseconds).toBe(0); + }); +}); + +describe("errors", () => { + test("this value must be a Temporal.ZonedDateTime object", () => { + expect(() => { + Temporal.ZonedDateTime.prototype.startOfDay.call("foo"); + }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime"); + }); +});