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LibJS: Refactor common option reading into the GetDifferenceSettings AO

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This is an editorial change in the Temporal spec.

See: 78abbb8
This commit is contained in:
Linus Groh 2022-06-24 00:27:29 +01:00
parent 05c5263ecc
commit ee0d5d6649
8 changed files with 141 additions and 264 deletions
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47
Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
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@ -507,50 +507,21 @@ ThrowCompletionOr<Duration*> difference_temporal_plain_date(GlobalObject& global
if (!TRY(calendar_equals(global_object, temporal_date.calendar(), other->calendar())))
return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalDifferentCalendars);
// 4. Set options to ? GetOptionsObject(options).
auto const* options = TRY(get_options_object(global_object, options_value));
// 4. Let settings be ? GetDifferenceSettings(operation, options, date, « », "day", "day").
auto settings = TRY(get_difference_settings(global_object, operation, options_value, UnitGroup::Date, {}, { "day"sv }, "day"sv));
// 5. Let smallestUnit be ? GetTemporalUnit(options, "smallestUnit", date, "day").
auto smallest_unit = TRY(get_temporal_unit(global_object, *options, vm.names.smallestUnit, UnitGroup::Date, { "day"sv }));
// 5. Let untilOptions be ? MergeLargestUnitOption(settings.[[Options]], settings.[[LargestUnit]]).
auto* until_options = TRY(merge_largest_unit_option(global_object, settings.options, settings.largest_unit));
// 6. Let defaultLargestUnit be ! LargerOfTwoTemporalUnits("day", smallestUnit).
auto default_largest_unit = larger_of_two_temporal_units("day"sv, *smallest_unit);
// 7. Let largestUnit be ? GetTemporalUnit(options, "largestUnit", date, "auto").
auto largest_unit = TRY(get_temporal_unit(global_object, *options, vm.names.largestUnit, UnitGroup::Date, { "auto"sv }));
// 8. If largestUnit is "auto", set largestUnit to defaultLargestUnit.
if (largest_unit == "auto"sv)
largest_unit = default_largest_unit;
// 9. If LargerOfTwoTemporalUnits(largestUnit, smallestUnit) is not largestUnit, throw a RangeError exception.
if (larger_of_two_temporal_units(*largest_unit, *smallest_unit) != largest_unit)
return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidUnitRange, *smallest_unit, *largest_unit);
// 10. Let roundingMode be ? ToTemporalRoundingMode(options, "trunc").
auto rounding_mode = TRY(to_temporal_rounding_mode(global_object, *options, "trunc"sv));
// 11. If operation is since, then
if (operation == DifferenceOperation::Since) {
// a. Set roundingMode to ! NegateTemporalRoundingMode(roundingMode).
rounding_mode = negate_temporal_rounding_mode(rounding_mode);
}
// 12. Let roundingIncrement be ? ToTemporalRoundingIncrement(options, undefined, false).
auto rounding_increment = TRY(to_temporal_rounding_increment(global_object, *options, {}, false));
// 13. Let untilOptions be ? MergeLargestUnitOption(options, largestUnit).
auto* until_options = TRY(merge_largest_unit_option(global_object, *options, largest_unit.release_value()));
// 14. Let result be ? CalendarDateUntil(temporalDate.[[Calendar]], temporalDate, other, untilOptions).
// 6. Let result be ? CalendarDateUntil(temporalDate.[[Calendar]], temporalDate, other, untilOptions).
auto* duration = TRY(calendar_date_until(global_object, temporal_date.calendar(), &temporal_date, other, *until_options));
auto result = DurationRecord { duration->years(), duration->months(), duration->weeks(), duration->days(), 0, 0, 0, 0, 0, 0 };
// 15. If smallestUnit is not "day" or roundingIncrement ≠ 1, then
if (*smallest_unit != "day"sv || rounding_increment != 1) {
// a. Set result to (? RoundDuration(result.[[Years]], result.[[Months]], result.[[Weeks]], result.[[Days]], 0, 0, 0, 0, 0, 0, roundingIncrement, smallestUnit, roundingMode, temporalDate)).[[DurationRecord]].
result = TRY(round_duration(global_object, result.years, result.months, result.weeks, result.days, 0, 0, 0, 0, 0, 0, rounding_increment, *smallest_unit, rounding_mode, &temporal_date)).duration_record;
// 7. If settings.[[SmallestUnit]] is not "day" or settings.[[RoundingIncrement]] ≠ 1, then
if (settings.smallest_unit != "day"sv || settings.rounding_increment != 1) {
// a. Set result to (? RoundDuration(result.[[Years]], result.[[Months]], result.[[Weeks]], result.[[Days]], 0, 0, 0, 0, 0, 0, settings.[[RoundingIncrement]], settings.[[SmallestUnit]], settings.[[RoundingMode]], temporalDate)).[[DurationRecord]].
result = TRY(round_duration(global_object, result.years, result.months, result.weeks, result.days, 0, 0, 0, 0, 0, 0, settings.rounding_increment, settings.smallest_unit, settings.rounding_mode, &temporal_date)).duration_record;
}
// 16. Return ! CreateTemporalDuration(sign × result.[[Years]], sign × result.[[Months]], sign × result.[[Weeks]], sign × result.[[Days]], 0, 0, 0, 0, 0, 0).