[Temporal] Add ZonedDateTime to(Instant|Plain(Date)?(Time)?)

Also change some AO's return type from MaybeHandle to Handle
and call ToHandleChecked() on the right spot.

Spec Text:
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toinstant
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaindate
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaintime
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaindatetime

Bug: v8:11544
Change-Id: I140b6a7053d00837bc48fb70980d69778715c0c9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3385603
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80788}

src/builtins/builtins-temporal.cc

@@ -108,14 +108,6 @@ TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeEquals)
 TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToString)
 /* Temporal #sec-temporal.zonedddatetimeprototype.tojson */
 TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToJSON)
-/* Temporal #sec-temporal.zoneddatetime.prototype.toinstant */
-TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToInstant)
-/* Temporal #sec-temporal.zoneddatetime.prototype.toplaindate */
-TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToPlainDate)
-/* Temporal #sec-temporal.zoneddatetime.prototype.toplaintime */
-TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToPlainTime)
-/* Temporal #sec-temporal.zoneddatetime.prototype.toplaindatetime */
-TO_BE_IMPLEMENTED(TemporalZonedDateTimePrototypeToPlainDateTime)
 
 /* Temporal.Duration */
 /* Temporal #sec-temporal.duration.compare */
@@ -614,8 +606,12 @@ TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, ToPlainMonthDay, toPlainMonthDay)
 TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, GetISOFields, getISOFields)
 TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, OffsetNanoseconds, offsetNanoseconds)
 TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, Offset, offset)
-TEMPORAL_VALUE_OF(ZonedDateTime)
 TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, StartOfDay, startOfDay)
+TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, ToInstant, toInstant)
+TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, ToPlainDate, toPlainDate)
+TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, ToPlainTime, toPlainTime)
+TEMPORAL_PROTOTYPE_METHOD0(ZonedDateTime, ToPlainDateTime, toPlainDateTime)
+TEMPORAL_VALUE_OF(ZonedDateTime)
 
 // Duration
 BUILTIN(TemporalDurationConstructor) {

src/objects/js-temporal-objects.h

@@ -737,6 +737,23 @@ class JSTemporalZonedDateTime
   V8_WARN_UNUSED_RESULT static MaybeHandle<JSTemporalZonedDateTime> StartOfDay(
       Isolate* isolate, Handle<JSTemporalZonedDateTime> zoned_date_time);
 
+  // #sec-temporal.zoneddatetime.prototype.toinstant
+  V8_WARN_UNUSED_RESULT static MaybeHandle<JSTemporalInstant> ToInstant(
+      Isolate* isolate, Handle<JSTemporalZonedDateTime> zoned_date_time);
+
+  // #sec-temporal.zoneddatetime.prototype.toplaindate
+  V8_WARN_UNUSED_RESULT static MaybeHandle<JSTemporalPlainDate> ToPlainDate(
+      Isolate* isolate, Handle<JSTemporalZonedDateTime> zoned_date_time);
+
+  // #sec-temporal.zoneddatetime.prototype.toplaintime
+  V8_WARN_UNUSED_RESULT static MaybeHandle<JSTemporalPlainTime> ToPlainTime(
+      Isolate* isolate, Handle<JSTemporalZonedDateTime> zoned_date_time);
+
+  // #sec-temporal.zoneddatetime.prototype.toplaindatetime
+  V8_WARN_UNUSED_RESULT static MaybeHandle<JSTemporalPlainDateTime>
+  ToPlainDateTime(Isolate* isolate,
+                  Handle<JSTemporalZonedDateTime> zoned_date_time);
+
   DECL_PRINTER(JSTemporalZonedDateTime)
 
   TQ_OBJECT_CONSTRUCTORS(JSTemporalZonedDateTime)
@@ -777,8 +794,7 @@ DECLARE_CALENDAR_ABSTRACT_OPERATION(EraYear)
 #undef DECLARE_CALENDAR_ABSTRACT_OPERATION
 
 // #sec-temporal-getiso8601calendar
-V8_WARN_UNUSED_RESULT MaybeHandle<JSTemporalCalendar> GetISO8601Calendar(
-    Isolate* isolate);
+Handle<JSTemporalCalendar> GetISO8601Calendar(Isolate* isolate);
 
 // #sec-temporal-builtintimezonegetplaindatetimefor
 V8_WARN_UNUSED_RESULT MaybeHandle<JSTemporalPlainDateTime>

test/test262/test262.status

@@ -1345,7 +1345,6 @@
   'built-ins/Temporal/ZonedDateTime/prototype/subtract/timezone-getoffsetnanosecondsfor-not-callable': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/subtract/timezone-getoffsetnanosecondsfor-out-of-range': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/subtract/timezone-getoffsetnanosecondsfor-wrong-type': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toInstant/branding': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toJSON/balance-negative-time-units': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toJSON/branding': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toJSON/negative-epochnanoseconds': [FAIL],
@@ -1357,26 +1356,9 @@
   'built-ins/Temporal/ZonedDateTime/prototype/toJSON/year-format': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toLocaleString/branding': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toLocaleString/return-string': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDate/branding': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/balance-negative-time-units': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/branding': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/negative-epochnanoseconds': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/plain-custom-timezone': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/timezone-getoffsetnanosecondsfor-non-integer': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/timezone-getoffsetnanosecondsfor-not-callable': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/timezone-getoffsetnanosecondsfor-out-of-range': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDateTime/timezone-getoffsetnanosecondsfor-wrong-type': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDate/timezone-getoffsetnanosecondsfor-non-integer': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDate/timezone-getoffsetnanosecondsfor-not-callable': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDate/timezone-getoffsetnanosecondsfor-out-of-range': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainDate/timezone-getoffsetnanosecondsfor-wrong-type': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/balance-negative-time-units': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/branding': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/negative-epochnanoseconds': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/timezone-getoffsetnanosecondsfor-non-integer': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/timezone-getoffsetnanosecondsfor-not-callable': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/timezone-getoffsetnanosecondsfor-out-of-range': [FAIL],
-  'built-ins/Temporal/ZonedDateTime/prototype/toPlainTime/timezone-getoffsetnanosecondsfor-wrong-type': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toString/balance-negative-time-units': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toString/branding': [FAIL],
   'built-ins/Temporal/ZonedDateTime/prototype/toString/calendarname-invalid-string': [FAIL],