mirrors/ladybird
0
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-08-28 05:07:35 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

LibJS: Ensure DifferenceISODateTime receives valid ISO date-times

Browse source 
This is an editorial change in the Temporal proposal. See:
b5da334
This commit is contained in:
Timothy Flynn 2024-12-06 08:55:47 -05:00 • committed by Tim Flynn
commit 6b8acc0af5
Notes: github-actions[bot] 2024-12-06 16:14:11 +00:00
2 changed files with 25 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

39
Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
View file

@ -286,14 +286,13 @@ ISODateTime round_iso_date_time(ISODateTime const& iso_date_time, u64 increment,
}
// 5.5.12 DifferenceISODateTime ( isoDateTime1, isoDateTime2, calendar, largestUnit ), https://tc39.es/proposal-temporal/#sec-temporal-differenceisodatetime
ThrowCompletionOr<InternalDuration> difference_iso_date_time(VM& vm, ISODateTime const& iso_date_time1, ISODateTime const& iso_date_time2, StringView calendar, Unit largest_unit)
InternalDuration difference_iso_date_time(VM& vm, ISODateTime const& iso_date_time1, ISODateTime const& iso_date_time2, StringView calendar, Unit largest_unit)
{
// 1. Assert: ISODateTimeWithinLimits(isoDateTime1) is true.
VERIFY(iso_date_time_within_limits(iso_date_time1));
// 2. Assert: ISODateTimeWithinLimits(isoDateTime2) is true.
// FIXME: Spec issue: Rather than asserting, throw a RangeError. See:
// https://github.com/tc39/proposal-temporal/issues/3015
if (!iso_date_time_within_limits(iso_date_time1) || !iso_date_time_within_limits(iso_date_time2))
return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidISODateTime);
VERIFY(iso_date_time_within_limits(iso_date_time2));
// 3. Let timeDuration be DifferenceTime(isoDateTime1.[[Time]], isoDateTime2.[[Time]]).
auto time_duration = difference_time(iso_date_time1.time, iso_date_time2.time);
@ -344,17 +343,22 @@ ThrowCompletionOr<InternalDuration> difference_plain_date_time_with_rounding(VM&
return combine_date_and_time_duration(zero_date_duration(vm), TimeDuration { 0 });
}
// 2. Let diff be DifferenceISODateTime(isoDateTime1, isoDateTime2, calendar, largestUnit).
auto diff = TRY(difference_iso_date_time(vm, iso_date_time1, iso_date_time2, calendar, largest_unit));
// 2. If ISODateTimeWithinLimits(isoDateTime1) is false or ISODateTimeWithinLimits(isoDateTime2) is false, throw a
// RangeError exception.
if (!iso_date_time_within_limits(iso_date_time1) || !iso_date_time_within_limits(iso_date_time2))
return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidISODateTime);
// 3. If smallestUnit is NANOSECOND and roundingIncrement = 1, return diff.
// 3. Let diff be DifferenceISODateTime(isoDateTime1, isoDateTime2, calendar, largestUnit).
auto diff = difference_iso_date_time(vm, iso_date_time1, iso_date_time2, calendar, largest_unit);
// 4. If smallestUnit is NANOSECOND and roundingIncrement = 1, return diff.
if (smallest_unit == Unit::Nanosecond && rounding_increment == 1)
return diff;
// 4. Let destEpochNs be GetUTCEpochNanoseconds(isoDateTime2).
// 5. Let destEpochNs be GetUTCEpochNanoseconds(isoDateTime2).
auto dest_epoch_ns = get_utc_epoch_nanoseconds(iso_date_time2);
// 5. Return ? RoundRelativeDuration(diff, destEpochNs, isoDateTime1, UNSET, calendar, largestUnit, roundingIncrement, smallestUnit, roundingMode).
// 6. Return ? RoundRelativeDuration(diff, destEpochNs, isoDateTime1, UNSET, calendar, largestUnit, roundingIncrement, smallestUnit, roundingMode).
return TRY(round_relative_duration(vm, diff, dest_epoch_ns, iso_date_time1, {}, calendar, largest_unit, rounding_increment, smallest_unit, rounding_mode));
}
@ -367,17 +371,22 @@ ThrowCompletionOr<Crypto::BigFraction> difference_plain_date_time_with_total(VM&
return Crypto::BigFraction {};
}
// 2. Let diff be DifferenceISODateTime(isoDateTime1, isoDateTime2, calendar, unit).
auto diff = TRY(difference_iso_date_time(vm, iso_date_time1, iso_date_time2, calendar, unit));
// 2. If ISODateTimeWithinLimits(isoDateTime1) is false or ISODateTimeWithinLimits(isoDateTime2) is false, throw a
// RangeError exception.
if (!iso_date_time_within_limits(iso_date_time1) || !iso_date_time_within_limits(iso_date_time2))
return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidISODateTime);
// 3. If unit is NANOSECOND, return diff.[[Time]].
// 3. Let diff be DifferenceISODateTime(isoDateTime1, isoDateTime2, calendar, unit).
auto diff = difference_iso_date_time(vm, iso_date_time1, iso_date_time2, calendar, unit);
// 4. If unit is NANOSECOND, return diff.[[Time]].
if (unit == Unit::Nanosecond)
return move(diff.time);
// 4. Let destEpochNs be GetUTCEpochNanoseconds(isoDateTime2).
// 5. Let destEpochNs be GetUTCEpochNanoseconds(isoDateTime2).
auto dest_epoch_ns = get_utc_epoch_nanoseconds(iso_date_time2);
// 5. Return ? TotalRelativeDuration(diff, destEpochNs, isoDateTime1, UNSET, calendar, unit).
// 6. Return ? TotalRelativeDuration(diff, destEpochNs, isoDateTime1, UNSET, calendar, unit).
return TRY(total_relative_duration(vm, diff, dest_epoch_ns, iso_date_time1, {}, calendar, unit));
}