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LibJS: Implement the Temporal.Duration relative-to ZonedDateTime options

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Timothy Flynn 2024-11-25 08:40:25 -05:00 • committed by Andreas Kling
commit 18f95434bc
Notes: github-actions[bot] 2024-11-26 10:04:10 +00:00
9 changed files with 296 additions and 35 deletions
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55
Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
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@ -475,12 +475,16 @@ ThrowCompletionOr<RelativeTo> get_temporal_relative_to_option(VM& vm, Object con
if (value.is_undefined())
return RelativeTo { .plain_relative_to = {}, .zoned_relative_to = {} };
// FIXME: 3. Let offsetBehaviour be OPTION.
// FIXME: 4. Let matchBehaviour be MATCH-EXACTLY.
// 3. Let offsetBehaviour be OPTION.
auto offset_behavior = OffsetBehavior::Option;
// 4. Let matchBehaviour be MATCH-EXACTLY.
auto match_behavior = MatchBehavior::MatchExactly;
String calendar;
Optional<String> time_zone;
Optional<String> offset_string;
ISODate iso_date;
Variant<ParsedISODateTime::StartOfDay, Time> time { Time {} };
@ -488,8 +492,11 @@ ThrowCompletionOr<RelativeTo> get_temporal_relative_to_option(VM& vm, Object con
if (value.is_object()) {
auto& object = value.as_object();
// FIXME: a. If value has an [[InitializedTemporalZonedDateTime]] internal slot, then
// FIXME: i. Return the Record { [[PlainRelativeTo]]: undefined, [[ZonedRelativeTo]]: value }.
// a. If value has an [[InitializedTemporalZonedDateTime]] internal slot, then
if (is<ZonedDateTime>(object)) {
// i. Return the Record { [[PlainRelativeTo]]: undefined, [[ZonedRelativeTo]]: value }.
return RelativeTo { .plain_relative_to = {}, .zoned_relative_to = static_cast<ZonedDateTime&>(object) };
}
// b. If value has an [[InitializedTemporalDate]] internal slot, then
if (is<PlainDate>(object)) {
@ -527,7 +534,8 @@ ThrowCompletionOr<RelativeTo> get_temporal_relative_to_option(VM& vm, Object con
// i. If offsetString is UNSET, then
if (!offset_string.has_value()) {
// FIXME: i. Set offsetBehaviour to WALL.
// i. Set offsetBehaviour to WALL.
offset_behavior = OffsetBehavior::Wall;
}
// j. Let isoDate be result.[[ISODate]].
@ -563,14 +571,17 @@ ThrowCompletionOr<RelativeTo> get_temporal_relative_to_option(VM& vm, Object con
// ii. If result.[[TimeZone]].[[Z]] is true, then
if (result.time_zone.z_designator) {
// FIXME: 1. Set offsetBehaviour to EXACT.
// 1. Set offsetBehaviour to EXACT.
offset_behavior = OffsetBehavior::Exact;
}
// iii. Else if offsetString is EMPTY, then
else if (!offset_string.has_value()) {
// FIXME: 1. Set offsetBehaviour to WALL.
// 1. Set offsetBehaviour to WALL.
offset_behavior = OffsetBehavior::Wall;
}
// FIXME: iv. Set matchBehaviour to MATCH-MINUTES.
// iv. Set matchBehaviour to MATCH-MINUTES.
match_behavior = MatchBehavior::MatchMinutes;
}
// g. Let calendar be result.[[Calendar]].
@ -596,15 +607,27 @@ ThrowCompletionOr<RelativeTo> get_temporal_relative_to_option(VM& vm, Object con
return RelativeTo { .plain_relative_to = plain_date, .zoned_relative_to = {} };
}
// FIXME: 8. If offsetBehaviour is OPTION, then
// FIXME: a. Let offsetNs be ! ParseDateTimeUTCOffset(offsetString).
// FIXME: 9. Else,
// FIXME: a. Let offsetNs be 0.
// FIXME: 10. Let epochNanoseconds be ? InterpretISODateTimeOffset(isoDate, time, offsetBehaviour, offsetNs, timeZone, compatible, reject, matchBehaviour).
// FIXME: 11. Let zonedRelativeTo be ! CreateTemporalZonedDateTime(epochNanoseconds, timeZone, calendar).
// FIXME: 12. Return the Record { [[PlainRelativeTo]]: undefined, [[ZonedRelativeTo]]: zonedRelativeTo }.
double offset_nanoseconds = 0;
return RelativeTo { .plain_relative_to = {}, .zoned_relative_to = {} };
// 8. If offsetBehaviour is OPTION, then
if (offset_behavior == OffsetBehavior::Option) {
// a. Let offsetNs be ! ParseDateTimeUTCOffset(offsetString).
offset_nanoseconds = parse_date_time_utc_offset(*offset_string);
}
// 9. Else,
else {
// a. Let offsetNs be 0.
offset_nanoseconds = 0;
}
// 10. Let epochNanoseconds be ? InterpretISODateTimeOffset(isoDate, time, offsetBehaviour, offsetNs, timeZone, COMPATIBLE, REJECT, matchBehaviour).
auto epoch_nanoseconds = TRY(interpret_iso_date_time_offset(vm, iso_date, time, offset_behavior, offset_nanoseconds, *time_zone, Disambiguation::Compatible, OffsetOption::Reject, match_behavior));
// 11. Let zonedRelativeTo be ! CreateTemporalZonedDateTime(epochNanoseconds, timeZone, calendar).
auto zoned_relative_to = MUST(create_temporal_zoned_date_time(vm, BigInt::create(vm, move(epoch_nanoseconds)), time_zone.release_value(), move(calendar)));
// 12. Return the Record { [[PlainRelativeTo]]: undefined, [[ZonedRelativeTo]]: zonedRelativeTo }.
return RelativeTo { .plain_relative_to = {}, .zoned_relative_to = zoned_relative_to };
}
// 13.19 LargerOfTwoTemporalUnits ( u1, u2 ), https://tc39.es/proposal-temporal/#sec-temporal-largeroftwotemporalunits