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LibJS: Implement TODO()'d parts of balance_duration()

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Massive :yakstack:, so I understand why it was skipped in the first
place :^)
This commit is contained in:
Linus Groh 2021-11-02 00:14:47 +01:00
parent 17fd08d752
commit d49bbb1da3
11 changed files with 320 additions and 6 deletions
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54
Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
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@ -333,4 +333,58 @@ ThrowCompletionOr<TemporalPlainDateTime> add_date_time(GlobalObject& global_obje
return TemporalPlainDateTime { .year = added_date->iso_year(), .month = added_date->iso_month(), .day = added_date->iso_day(), .hour = time_result.hour, .minute = time_result.minute, .second = time_result.second, .millisecond = time_result.millisecond, .microsecond = time_result.microsecond, .nanosecond = time_result.nanosecond };
}
// 5.5.11 DifferenceISODateTime ( y1, mon1, d1, h1, min1, s1, ms1, mus1, ns1, y2, mon2, d2, h2, min2, s2, ms2, mus2, ns2, calendar, largestUnit [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-differenceisodatetime
ThrowCompletionOr<TemporalDuration> difference_iso_date_time(GlobalObject& global_object, i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2, Object& calendar, StringView largest_unit, Object* options)
{
auto& vm = global_object.vm();
// 1. Assert: y1, mon1, d1, h1, min1, s1, ms1, mus1, ns1, y2, mon2, d2, h2, min2, s2, ms2, mus2, and ns2 are integers.
// 2. If options is not present, set options to ! OrdinaryObjectCreate(null).
if (!options)
options = Object::create(global_object, nullptr);
// 3. Let timeDifference be ! DifferenceTime(h1, min1, s1, ms1, mus1, ns1, h2, min2, s2, ms2, mus2, ns2).
auto time_difference = difference_time(hour1, minute1, second1, millisecond1, microsecond1, nanosecond1, hour2, minute2, second2, millisecond2, microsecond2, nanosecond2);
// 4. Let timeSign be ! DurationSign(0, 0, 0, timeDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]]).
auto time_sign = duration_sign(0, 0, 0, time_difference.days, time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, time_difference.nanoseconds);
// 5. Let dateSign be ! CompareISODate(y2, mon2, d2, y1, mon1, d1).
auto date_sign = compare_iso_date(year2, month2, day2, year1, month1, day1);
// 6. Let balanceResult be ! BalanceISODate(y1, mon1, d1 + timeDifference.[[Days]]).
auto balance_result = balance_iso_date(year1, month1, day1 + time_difference.days);
// 7. If timeSign is -dateSign, then
if (time_sign == -date_sign) {
// a. Set balanceResult to ! BalanceISODate(balanceResult.[[Year]], balanceResult.[[Month]], balanceResult.[[Day]] - timeSign).
balance_result = balance_iso_date(balance_result.year, balance_result.month, balance_result.day - time_sign);
// b. Set timeDifference to ? BalanceDuration(-timeSign, timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]], largestUnit).
time_difference = TRY(balance_duration(global_object, -time_sign, time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, *js_bigint(vm, { (i32)time_difference.nanoseconds }), largest_unit));
}
// 8. Let date1 be ? CreateTemporalDate(balanceResult.[[Year]], balanceResult.[[Month]], balanceResult.[[Day]], calendar).
auto* date1 = TRY(create_temporal_date(global_object, balance_result.year, balance_result.month, balance_result.day, calendar));
// 9. Let date2 be ? CreateTemporalDate(y2, mon2, d2, calendar).
auto* date2 = TRY(create_temporal_date(global_object, year2, month2, day2, calendar));
// 10. Let dateLargestUnit be ! LargerOfTwoTemporalUnits("day", largestUnit).
auto date_largest_unit = larger_of_two_temporal_units("day"sv, largest_unit);
// 11. Let untilOptions be ? MergeLargestUnitOption(options, dateLargestUnit).
auto* until_options = TRY(merge_largest_unit_option(global_object, *options, move(date_largest_unit)));
// 12. Let dateDifference be ? CalendarDateUntil(calendar, date1, date2, untilOptions).
auto* date_difference = TRY(calendar_date_until(global_object, calendar, *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(global_object, date_difference->days(), time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, *js_bigint(vm, { (i32)time_difference.nanoseconds }), largest_unit));
// 14. Return the Record { [[Years]]: dateDifference.[[Years]], [[Months]]: dateDifference.[[Months]], [[Weeks]]: dateDifference.[[Weeks]], [[Days]]: balanceResult.[[Days]], [[Hours]]: balanceResult.[[Hours]], [[Minutes]]: balanceResult.[[Minutes]], [[Seconds]]: balanceResult.[[Seconds]], [[Milliseconds]]: balanceResult.[[Milliseconds]], [[Microseconds]]: balanceResult.[[Microseconds]], [[Nanoseconds]]: balanceResult.[[Nanoseconds]] }.
return TemporalDuration { .years = date_difference->years(), .months = date_difference->months(), .weeks = date_difference->weeks(), .days = balance_result_.days, .hours = balance_result_.hours, .minutes = balance_result_.minutes, .seconds = balance_result_.seconds, .milliseconds = balance_result_.milliseconds, .microseconds = balance_result_.microseconds, .nanoseconds = balance_result_.nanoseconds };
}
}