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LibJS: Implement Temporal.ZonedDateTime.prototype.toPlainTime()
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3 changed files with 54 additions and 0 deletions
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@ -10,6 +10,7 @@
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#include <LibJS/Runtime/Temporal/Instant.h>
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#include <LibJS/Runtime/Temporal/PlainDate.h>
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#include <LibJS/Runtime/Temporal/PlainDateTime.h>
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#include <LibJS/Runtime/Temporal/PlainTime.h>
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#include <LibJS/Runtime/Temporal/TimeZone.h>
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#include <LibJS/Runtime/Temporal/ZonedDateTime.h>
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#include <LibJS/Runtime/Temporal/ZonedDateTimePrototype.h>
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@ -62,6 +63,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object)
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define_native_function(vm.names.valueOf, value_of, 0, attr);
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define_native_function(vm.names.toInstant, to_instant, 0, attr);
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define_native_function(vm.names.toPlainDate, to_plain_date, 0, attr);
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define_native_function(vm.names.toPlainTime, to_plain_time, 0, attr);
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}
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static ZonedDateTime* typed_this(GlobalObject& global_object)
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@ -745,4 +747,29 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::to_plain_date)
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return create_temporal_date(global_object, temporal_date_time->iso_year(), temporal_date_time->iso_month(), temporal_date_time->iso_day(), calendar);
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}
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// 6.3.48 Temporal.ZonedDateTime.prototype.toPlainTime ( ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaintime
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JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::to_plain_time)
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{
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// 1. Let zonedDateTime be the this value.
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// 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]).
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auto* zoned_date_time = typed_this(global_object);
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if (vm.exception())
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return {};
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// 3. Let timeZone be zonedDateTime.[[TimeZone]].
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auto& time_zone = zoned_date_time->time_zone();
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// 4. Let instant be ! CreateTemporalInstant(zonedDateTime.[[Nanoseconds]]).
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auto* instant = create_temporal_instant(global_object, zoned_date_time->nanoseconds());
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// TODO: Request spec change for consistency with toPlainDate (step 5 and 6)?
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// 5. Let temporalDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, zonedDateTime.[[Calendar]]).
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auto* temporal_date_time = builtin_time_zone_get_plain_date_time_for(global_object, &time_zone, *instant, zoned_date_time->calendar());
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if (vm.exception())
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return {};
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// 6. Return ? CreateTemporalTime(temporalDateTime.[[ISOHour]], temporalDateTime.[[ISOMinute]], temporalDateTime.[[ISOSecond]], temporalDateTime.[[ISOMillisecond]], temporalDateTime.[[ISOMicrosecond]], temporalDateTime.[[ISONanosecond]]).
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return create_temporal_time(global_object, temporal_date_time->iso_hour(), temporal_date_time->iso_minute(), temporal_date_time->iso_second(), temporal_date_time->iso_millisecond(), temporal_date_time->iso_microsecond(), temporal_date_time->iso_nanosecond());
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}
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}
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@ -48,6 +48,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(value_of);
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JS_DECLARE_NATIVE_FUNCTION(to_instant);
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JS_DECLARE_NATIVE_FUNCTION(to_plain_date);
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JS_DECLARE_NATIVE_FUNCTION(to_plain_time);
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};
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}
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@ -0,0 +1,26 @@
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describe("correct behavior", () => {
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test("length is 0", () => {
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expect(Temporal.ZonedDateTime.prototype.toPlainTime).toHaveLength(0);
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});
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test("basic functionality", () => {
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = new Temporal.ZonedDateTime(1625614921000000000n, timeZone);
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const plainTime = zonedDateTime.toPlainTime();
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expect(plainTime).toBeInstanceOf(Temporal.PlainTime);
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expect(plainTime.hour).toBe(23);
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expect(plainTime.minute).toBe(42);
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expect(plainTime.second).toBe(1);
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expect(plainTime.millisecond).toBe(0);
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expect(plainTime.microsecond).toBe(0);
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expect(plainTime.nanosecond).toBe(0);
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});
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});
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test("errors", () => {
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test("this value must be a Temporal.ZonedDateTime object", () => {
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expect(() => {
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Temporal.ZonedDateTime.prototype.toPlainTime.call("foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.ZonedDateTime");
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});
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});
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