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LibJS: Begin using CalendarMethodsRecord for AOs

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This begins the process of aligning our implementation with the spec
with regard to using CalendarMethodsRecord. The main intent here is to
make it much easier to make normative changes to AOs which have been
updated to CalendarMethodsRecord.

While this does resolve various FIXMEs, many others above need to be
added in order to be able to pass through a CalendarMethodsRecord. The
use here aligns with what I can gather from the spec of what the
arguments to CreateCalendarMethodsRecord should be, but various AOs have
been updated so much with other changes it's not completely obvious.
Other AOs do not even exist in the latest version of the spec, but we
still rely on them.

As part of these updates, this commit coincidentally also fixes two
PlainDate roundingmode issues seen in test262 - a test of which is also
added in test-js. This issue boiled down to what appears to be an
observable optimization in the spec, where it can avoid calling
dateUntil in certain situations (roundingGranularityIsNoop).

However, the main goal here is to make it much easier to fix many more
issues in the future :^)

since/calendar-dateuntil-called-with-singular-largestunit.js ❌ -> ✅
until/calendar-dateuntil-called-with-singular-largestunit.js ❌ -> ✅
This commit is contained in:
Shannon Booth 2024-02-10 14:57:17 +13:00 • committed by Tim Flynn
parent 6d4eda0028
commit bb8dad5bb0
11 changed files with 147 additions and 59 deletions
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8
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
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@ -374,7 +374,9 @@ ThrowCompletionOr<DurationRecord> difference_iso_date_time(VM& vm, i32 year1, u8
auto* until_options = TRY(merge_largest_unit_option(vm, options, TRY_OR_THROW_OOM(vm, String::from_utf8(date_largest_unit))));
// 12. Let dateDifference be ? CalendarDateUntil(calendar, date1, date2, untilOptions).
auto* date_difference = TRY(calendar_date_until(vm, calendar, date1, date2, *until_options));
// FIXME: AD-HOC calendar records use as this AO is not up to date with latest spec
auto calendar_record = TRY(create_calendar_methods_record(vm, NonnullGCPtr<Object> { calendar }, { { CalendarMethod::DateAdd, CalendarMethod::DateUntil } }));
auto date_difference = TRY(calendar_date_until(vm, calendar_record, date1, date2, *until_options));
// 13. Let balanceResult be ? BalanceDuration(dateDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]], largestUnit).
auto balance_result = TRY(balance_duration(vm, date_difference->days(), time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, Crypto::SignedBigInteger { time_difference.nanoseconds }, largest_unit));
@ -406,7 +408,9 @@ ThrowCompletionOr<NonnullGCPtr<Duration>> difference_temporal_plain_date_time(VM
auto* relative_to = MUST(create_temporal_date(vm, date_time.iso_year(), date_time.iso_month(), date_time.iso_day(), date_time.calendar()));
// 7. Let roundResult be (? RoundDuration(diff.[[Years]], diff.[[Months]], diff.[[Weeks]], diff.[[Days]], diff.[[Hours]], diff.[[Minutes]], diff.[[Seconds]], diff.[[Milliseconds]], diff.[[Microseconds]], diff.[[Nanoseconds]], settings.[[RoundingIncrement]], settings.[[SmallestUnit]], settings.[[RoundingMode]], relativeTo)).[[DurationRecord]].
auto round_result = TRY(round_duration(vm, diff.years, diff.months, diff.weeks, diff.days, diff.hours, diff.minutes, diff.seconds, diff.milliseconds, diff.microseconds, diff.nanoseconds, settings.rounding_increment, settings.smallest_unit, settings.rounding_mode, relative_to)).duration_record;
// FIXME: AD-HOC calendar records use as this AO is not up to date with latest spec
auto calendar_record = TRY(create_calendar_methods_record(vm, NonnullGCPtr<Object> { date_time.calendar() }, { { CalendarMethod::DateAdd, CalendarMethod::DateUntil } }));
auto round_result = TRY(round_duration(vm, diff.years, diff.months, diff.weeks, diff.days, diff.hours, diff.minutes, diff.seconds, diff.milliseconds, diff.microseconds, diff.nanoseconds, settings.rounding_increment, settings.smallest_unit, settings.rounding_mode, relative_to, calendar_record)).duration_record;
// 8. Let result be ? BalanceDuration(roundResult.[[Days]], roundResult.[[Hours]], roundResult.[[Minutes]], roundResult.[[Seconds]], roundResult.[[Milliseconds]], roundResult.[[Microseconds]], roundResult.[[Nanoseconds]], settings.[[LargestUnit]]).
auto result = MUST(balance_duration(vm, round_result.days, round_result.hours, round_result.minutes, round_result.seconds, round_result.milliseconds, round_result.microseconds, Crypto::SignedBigInteger { round_result.nanoseconds }, settings.largest_unit));