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LibJS: Implement Temporal.Duration.prototype.toString()

I hereby claim "implemented largest AO in LibJS ever" (450 lines). :^)
This commit is contained in:
Linus Groh 2021-11-07 01:41:52 +00:00
parent 36b51276d5
commit b2548393d2
7 changed files with 816 additions and 0 deletions

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@ -4,13 +4,18 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Temporal/AbstractOperations.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Duration.h>
#include <LibJS/Runtime/Temporal/DurationConstructor.h>
#include <LibJS/Runtime/Temporal/Instant.h>
#include <LibJS/Runtime/Temporal/PlainDateTime.h>
#include <LibJS/Runtime/Temporal/TimeZone.h>
#include <LibJS/Runtime/Temporal/ZonedDateTime.h>
namespace JS::Temporal {
@ -436,6 +441,490 @@ ThrowCompletionOr<BalancedDuration> balance_duration(GlobalObject& global_object
return BalancedDuration { .days = days, .hours = hours * sign, .minutes = minutes * sign, .seconds = seconds * sign, .milliseconds = milliseconds * sign, .microseconds = microseconds * sign, .nanoseconds = result_nanoseconds * sign };
}
// 7.5.16 MoveRelativeDate ( calendar, relativeTo, duration ), https://tc39.es/proposal-temporal/#sec-temporal-moverelativedate
ThrowCompletionOr<MoveRelativeDateResult> move_relative_date(GlobalObject& global_object, Object& calendar, PlainDateTime& relative_to, Duration& duration)
{
// 1. Assert: Type(relativeTo) is Object.
// 2. Assert: relativeTo has an [[InitializedTemporalDateTime]] internal slot.
// 3. Let options be ! OrdinaryObjectCreate(null).
auto* options = Object::create(global_object, nullptr);
// 4. Let later be ? CalendarDateAdd(calendar, relativeTo, duration, options).
auto* later = TRY(calendar_date_add(global_object, calendar, &relative_to, duration, options));
// FIXME: This cannot return an abrupt completion (spec issue, see https://github.com/tc39/proposal-temporal/pull/1909)
// 5. Let days be ? DaysUntil(relativeTo, later).
auto days = days_until(global_object, relative_to, *later);
// 6. Let dateTime be ? CreateTemporalDateTime(later.[[ISOYear]], later.[[ISOMonth]], later.[[ISODay]], relativeTo.[[ISOHour]], relativeTo.[[ISOMinute]], relativeTo.[[ISOSecond]], relativeTo.[[ISOMillisecond]], relativeTo.[[ISOMicrosecond]], relativeTo.[[ISONanosecond]], relativeTo.[[Calendar]]).
auto* date_time = TRY(create_temporal_date_time(global_object, later->iso_year(), later->iso_month(), later->iso_day(), relative_to.iso_hour(), relative_to.iso_minute(), relative_to.iso_second(), relative_to.iso_millisecond(), relative_to.iso_microsecond(), relative_to.iso_nanosecond(), relative_to.calendar()));
// 7. Return the Record { [[RelativeTo]]: dateTime, [[Days]]: days }.
return MoveRelativeDateResult { .relative_to = make_handle(date_time), .days = days };
}
// 7.5.17 MoveRelativeZonedDateTime ( zonedDateTime, years, months, weeks, days ), https://tc39.es/proposal-temporal/#sec-temporal-moverelativezoneddatetime
ThrowCompletionOr<ZonedDateTime*> move_relative_zoned_date_time(GlobalObject& global_object, ZonedDateTime& zoned_date_time, double years, double months, double weeks, double days)
{
// 1. Let intermediateNs be ? AddZonedDateTime(zonedDateTime.[[Nanoseconds]], zonedDateTime.[[TimeZone]], zonedDateTime.[[Calendar]], years, months, weeks, days, 0, 0, 0, 0, 0, 0).
auto* intermediate_ns = TRY(add_zoned_date_time(global_object, zoned_date_time.nanoseconds(), &zoned_date_time.time_zone(), zoned_date_time.calendar(), years, months, weeks, days, 0, 0, 0, 0, 0, 0));
// 2. Return ! CreateTemporalZonedDateTime(intermediateNs, zonedDateTime.[[TimeZone]], zonedDateTime.[[Calendar]]).
return MUST(create_temporal_zoned_date_time(global_object, *intermediate_ns, zoned_date_time.time_zone(), zoned_date_time.calendar()));
}
// 7.5.18 RoundDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds, increment, unit, roundingMode [ , relativeTo ] ), https://tc39.es/proposal-temporal/#sec-temporal-roundduration
ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, u32 increment, StringView unit, StringView rounding_mode, Object* relative_to_object)
{
auto& vm = global_object.vm();
Object* calendar = nullptr;
double fractional_seconds = 0;
// 1. If relativeTo is not present, set relativeTo to undefined.
// NOTE: `relative_to_object`, `relative_to_date`, and `relative_to` in the various code paths below
// are all the same as far as the spec is concerned, but the latter two are more strictly typed for convenience.
// The `_date` suffix is used as relativeTo is guaranteed to be a PlainDateTime object or undefined after step 5
// (i.e. PlainDateTime*), but a PlainDate object is assigned in a couple of cases.
PlainDateTime* relative_to = nullptr;
// 2. Let years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds, and increment each be the mathematical values of themselves.
// 3. If unit is "year", "month", or "week", and relativeTo is undefined, then
if (unit.is_one_of("year"sv, "month"sv, "week"sv) && !relative_to_object) {
// a. Throw a RangeError exception.
return vm.throw_completion<RangeError>(global_object, ErrorType::OptionIsNotValidValue, unit, "smallestUnit"sv);
}
// 4. Let zonedRelativeTo be undefined.
ZonedDateTime* zoned_relative_to = nullptr;
// 5. If relativeTo is not undefined, then
if (relative_to_object) {
// a. If relativeTo has an [[InitializedTemporalZonedDateTime]] internal slot, then
if (is<ZonedDateTime>(relative_to_object)) {
auto* relative_to_zoned_date_time = static_cast<ZonedDateTime*>(relative_to_object);
// i. Let instant be ! CreateTemporalInstant(relativeTo.[[Nanoseconds]]).
auto* instant = MUST(create_temporal_instant(global_object, relative_to_zoned_date_time->nanoseconds()));
// ii. Set zonedRelativeTo to relativeTo.
zoned_relative_to = relative_to_zoned_date_time;
// iii. Set relativeTo to ? BuiltinTimeZoneGetPlainDateTimeFor(relativeTo.[[TimeZone]], instant, relativeTo.[[Calendar]]).
relative_to = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &relative_to_zoned_date_time->time_zone(), *instant, relative_to_zoned_date_time->calendar()));
}
// b. Else,
else {
// i. Assert: relativeTo has an [[InitializedTemporalDateTime]] internal slot.
VERIFY(is<PlainDateTime>(relative_to_object));
relative_to = static_cast<PlainDateTime*>(relative_to_object);
}
// c. Let calendar be relativeTo.[[Calendar]].
calendar = &relative_to->calendar();
}
// 6. If unit is one of "year", "month", "week", or "day", then
if (unit.is_one_of("year"sv, "month"sv, "week"sv, "day"sv)) {
auto* nanoseconds_bigint = js_bigint(vm, Crypto::SignedBigInteger::create_from((i64)nanoseconds));
// a. Let nanoseconds be ! TotalDurationNanoseconds(0, hours, minutes, seconds, milliseconds, microseconds, nanoseconds, 0).
nanoseconds_bigint = total_duration_nanoseconds(global_object, 0, hours, minutes, seconds, milliseconds, microseconds, *nanoseconds_bigint, 0);
// b. Let intermediate be undefined.
ZonedDateTime* intermediate = nullptr;
// c. If zonedRelativeTo is not undefined, then
if (zoned_relative_to) {
// i. Let intermediate be ? MoveRelativeZonedDateTime(zonedRelativeTo, years, months, weeks, days).
intermediate = TRY(move_relative_zoned_date_time(global_object, *zoned_relative_to, years, months, weeks, days));
}
// d. Let result be ? NanosecondsToDays(nanoseconds, intermediate).
auto result = TRY(nanoseconds_to_days(global_object, *nanoseconds_bigint, intermediate));
// e. Set days to days + result.[[Days]] + result.[[Nanoseconds]] / result.[[DayLength]].
days += result.days + result.nanoseconds.cell()->big_integer().divided_by(Crypto::UnsignedBigInteger::create_from((u64)result.day_length)).quotient.to_double();
// f. Set hours, minutes, seconds, milliseconds, microseconds, and nanoseconds to 0.
hours = 0;
minutes = 0;
seconds = 0;
milliseconds = 0;
microseconds = 0;
nanoseconds = 0;
}
// 7. Else,
else {
// a. Let fractionalSeconds be nanoseconds × 10^9 + microseconds × 10^6 + milliseconds × 10^3 + seconds.
fractional_seconds = nanoseconds * 0.000000001 + microseconds * 0.000001 + milliseconds * 0.001 + seconds;
}
// 8. Let remainder be undefined.
double remainder = 0;
// 9. If unit is "year", then
if (unit == "year"sv) {
VERIFY(relative_to);
// a. Let yearsDuration be ? CreateTemporalDuration(years, 0, 0, 0, 0, 0, 0, 0, 0, 0).
auto* years_duration = TRY(create_temporal_duration(global_object, years, 0, 0, 0, 0, 0, 0, 0, 0, 0));
// b. Let dateAdd be ? GetMethod(calendar, "dateAdd").
auto* date_add = TRY(Value(calendar).get_method(global_object, vm.names.dateAdd));
// c. Let firstAddOptions be ! OrdinaryObjectCreate(null).
auto* first_add_options = Object::create(global_object, nullptr);
// d. Let yearsLater be ? CalendarDateAdd(calendar, relativeTo, yearsDuration, firstAddOptions, dateAdd).
auto* years_later = TRY(calendar_date_add(global_object, *calendar, relative_to, *years_duration, first_add_options, date_add));
// e. Let yearsMonthsWeeks be ? CreateTemporalDuration(years, months, weeks, 0, 0, 0, 0, 0, 0, 0).
auto* years_months_weeks = TRY(create_temporal_duration(global_object, years, months, weeks, 0, 0, 0, 0, 0, 0, 0));
// f. Let secondAddOptions be ! OrdinaryObjectCreate(null).
auto* second_add_options = Object::create(global_object, nullptr);
// g. Let yearsMonthsWeeksLater be ? CalendarDateAdd(calendar, relativeTo, yearsMonthsWeeks, secondAddOptions, dateAdd).
auto* years_months_weeks_later = TRY(calendar_date_add(global_object, *calendar, relative_to, *years_months_weeks, second_add_options, date_add));
// FIXME: This cannot return an abrupt completion (spec issue, see https://github.com/tc39/proposal-temporal/pull/1909)
// h. Let monthsWeeksInDays be ? DaysUntil(yearsLater, yearsMonthsWeeksLater).
auto months_weeks_in_days = days_until(global_object, *years_later, *years_months_weeks_later);
// i. Set relativeTo to yearsLater.
auto* relative_to_date = years_later;
// j. Let days be days + monthsWeeksInDays.
days += months_weeks_in_days;
// k. Let daysDuration be ? CreateTemporalDuration(0, 0, 0, days, 0, 0, 0, 0, 0, 0).
auto* days_duration = TRY(create_temporal_duration(global_object, 0, 0, 0, days, 0, 0, 0, 0, 0, 0));
// l. Let thirdAddOptions be ! OrdinaryObjectCreate(null).
auto* third_add_options = Object::create(global_object, nullptr);
// m. Let daysLater be ? CalendarDateAdd(calendar, relativeTo, daysDuration, thirdAddOptions, dateAdd).
auto* days_later = TRY(calendar_date_add(global_object, *calendar, relative_to_date, *days_duration, third_add_options, date_add));
// n. Let untilOptions be ! OrdinaryObjectCreate(null).
auto* until_options = Object::create(global_object, nullptr);
// o. Perform ! CreateDataPropertyOrThrow(untilOptions, "largestUnit", "year").
MUST(until_options->create_data_property_or_throw(vm.names.largestUnit, js_string(vm, "year"sv)));
// p. Let timePassed be ? CalendarDateUntil(calendar, relativeTo, daysLater, untilOptions).
auto* time_passed = TRY(calendar_date_until(global_object, *calendar, *relative_to_date, *days_later, *until_options));
// q. Let yearsPassed be timePassed.[[Years]].
auto years_passed = time_passed->years();
// r. Set years to years + yearsPassed.
years += years_passed;
// s. Let oldRelativeTo be relativeTo.
auto* old_relative_to_date = relative_to_date;
// t. Let yearsDuration be ? CreateTemporalDuration(yearsPassed, 0, 0, 0, 0, 0, 0, 0, 0, 0).
years_duration = TRY(create_temporal_duration(global_object, years_passed, 0, 0, 0, 0, 0, 0, 0, 0, 0));
// u. Let fourthAddOptions be ! OrdinaryObjectCreate(null).
auto* fourth_add_options = Object::create(global_object, nullptr);
// v. Set relativeTo to ? CalendarDateAdd(calendar, relativeTo, yearsDuration, fourthAddOptions, dateAdd).
relative_to_date = TRY(calendar_date_add(global_object, *calendar, relative_to_date, *years_duration, fourth_add_options, date_add));
// FIXME: This cannot return an abrupt completion (spec issue, see https://github.com/tc39/proposal-temporal/pull/1909)
// w. Let daysPassed be ? DaysUntil(oldRelativeTo, relativeTo).
auto days_passed = days_until(global_object, *old_relative_to_date, *relative_to_date);
// x. Set days to days - daysPassed.
days -= days_passed;
// y. Let sign be ! Sign(days).
auto sign = JS::Temporal::sign(days);
// z. If sign is 0, set sign to 1.
if (sign == 0)
sign = 1;
// aa. Let oneYear be ? CreateTemporalDuration(sign, 0, 0, 0, 0, 0, 0, 0, 0, 0).
auto* one_year = TRY(create_temporal_duration(global_object, sign, 0, 0, 0, 0, 0, 0, 0, 0, 0));
// ab. Set relativeTo to ! CreateTemporalDateTime(relativeTo.[[ISOYear]], relativeTo.[[ISOMonth]], relativeTo.[[ISODay]], 0, 0, 0, 0, 0, 0, relativeTo.[[Calendar]]).
relative_to = MUST(create_temporal_date_time(global_object, relative_to_date->iso_year(), relative_to_date->iso_month(), relative_to_date->iso_day(), 0, 0, 0, 0, 0, 0, relative_to->calendar()));
// ac. Let moveResult be ? MoveRelativeDate(calendar, relativeTo, oneYear).
auto move_result = TRY(move_relative_date(global_object, *calendar, *relative_to, *one_year));
// ad. Let oneYearDays be moveResult.[[Days]].
auto one_year_days = move_result.days;
// ae. Let fractionalYears be years + days / abs(oneYearDays).
auto fractional_years = years + days / fabs(one_year_days);
// af. Set years to ! RoundNumberToIncrement(fractionalYears, increment, roundingMode).
years = (double)round_number_to_increment(fractional_years, increment, rounding_mode);
// ag. Set remainder to fractionalYears - years.
remainder = fractional_years - years;
// ah. Set months, weeks, and days to 0.
months = 0;
weeks = 0;
days = 0;
}
// 10. Else if unit is "month", then
else if (unit == "month"sv) {
VERIFY(relative_to);
// a. Let yearsMonths be ? CreateTemporalDuration(years, months, 0, 0, 0, 0, 0, 0, 0, 0).
auto* years_months = TRY(create_temporal_duration(global_object, years, months, 0, 0, 0, 0, 0, 0, 0, 0));
// b. Let dateAdd be ? GetMethod(calendar, "dateAdd").
auto* date_add = TRY(Value(calendar).get_method(global_object, vm.names.dateAdd));
// c. Let firstAddOptions be ! OrdinaryObjectCreate(null).
auto* first_add_options = Object::create(global_object, nullptr);
// d. Let yearsMonthsLater be ? CalendarDateAdd(calendar, relativeTo, yearsMonths, firstAddOptions, dateAdd).
auto* years_months_later = TRY(calendar_date_add(global_object, *calendar, relative_to, *years_months, first_add_options, date_add));
// e. Let yearsMonthsWeeks be ? CreateTemporalDuration(years, months, weeks, 0, 0, 0, 0, 0, 0, 0).
auto* years_months_weeks = TRY(create_temporal_duration(global_object, years, months, weeks, 0, 0, 0, 0, 0, 0, 0));
// f. Let secondAddOptions be ! OrdinaryObjectCreate(null).
auto* seconds_add_options = Object::create(global_object, nullptr);
// g. Let yearsMonthsWeeksLater be ? CalendarDateAdd(calendar, relativeTo, yearsMonthsWeeks, secondAddOptions, dateAdd).
auto* years_months_weeks_later = TRY(calendar_date_add(global_object, *calendar, relative_to, *years_months_weeks, seconds_add_options, date_add));
// FIXME: This cannot return an abrupt completion (spec issue, see https://github.com/tc39/proposal-temporal/pull/1909)
// h. Let weeksInDays be ? DaysUntil(yearsMonthsLater, yearsMonthsWeeksLater).
auto weeks_in_days = days_until(global_object, *years_months_later, *years_months_weeks_later);
// i. Set relativeTo to yearsMonthsLater.
auto* relative_to_date = years_months_later;
// j. Let days be days + weeksInDays.
days += weeks_in_days;
// k. Let sign be ! Sign(days).
auto sign = JS::Temporal::sign(days);
// l. If sign is 0, set sign to 1.
if (sign == 0)
sign = 1;
// m. Let oneMonth be ? CreateTemporalDuration(0, sign, 0, 0, 0, 0, 0, 0, 0, 0).
auto* one_month = TRY(create_temporal_duration(global_object, 0, sign, 0, 0, 0, 0, 0, 0, 0, 0));
// n. Set relativeTo to ! CreateTemporalDateTime(relativeTo.[[ISOYear]], relativeTo.[[ISOMonth]], relativeTo.[[ISODay]], 0, 0, 0, 0, 0, 0, relativeTo.[[Calendar]]).
relative_to = MUST(create_temporal_date_time(global_object, relative_to_date->iso_year(), relative_to_date->iso_month(), relative_to_date->iso_day(), 0, 0, 0, 0, 0, 0, relative_to_date->calendar()));
// o. Let moveResult be ? MoveRelativeDate(calendar, relativeTo, oneMonth).
auto move_result = TRY(move_relative_date(global_object, *calendar, *relative_to, *one_month));
// p. Set relativeTo to moveResult.[[RelativeTo]].
relative_to = move_result.relative_to.cell();
// q. Let oneMonthDays be moveResult.[[Days]].
auto one_month_days = move_result.days;
// r. Repeat, while abs(days) ≥ abs(oneMonthDays),
while (fabs(days) >= fabs(one_month_days)) {
// i. Set months to months + sign.
months += sign;
// ii. Set days to days oneMonthDays.
days -= one_month_days;
// iii. Set moveResult to ? MoveRelativeDate(calendar, relativeTo, oneMonth).
move_result = TRY(move_relative_date(global_object, *calendar, *relative_to, *one_month));
// iv. Set relativeTo to moveResult.[[RelativeTo]].
relative_to = move_result.relative_to.cell();
// v. Set oneMonthDays to moveResult.[[Days]].
one_month_days = move_result.days;
}
// s. Let fractionalMonths be months + days / abs(oneMonthDays).
auto fractional_months = months + days / fabs(one_month_days);
// t. Set months to ! RoundNumberToIncrement(fractionalMonths, increment, roundingMode).
months = (double)round_number_to_increment(fractional_months, increment, rounding_mode);
// u. Set remainder to fractionalMonths - months.
remainder = fractional_months - months;
// v. Set weeks and days to 0.
weeks = 0;
days = 0;
}
// 11. Else if unit is "week", then
else if (unit == "week"sv) {
VERIFY(relative_to);
// a. Let sign be ! Sign(days).
auto sign = JS::Temporal::sign(days);
// b. If sign is 0, set sign to 1.
if (sign == 0)
sign = 1;
// c. Let oneWeek be ? CreateTemporalDuration(0, 0, sign, 0, 0, 0, 0, 0, 0, 0).
auto* one_week = TRY(create_temporal_duration(global_object, 0, 0, sign, 0, 0, 0, 0, 0, 0, 0));
// d. Let moveResult be ? MoveRelativeDate(calendar, relativeTo, oneWeek).
auto move_result = TRY(move_relative_date(global_object, *calendar, *relative_to, *one_week));
// e. Set relativeTo to moveResult.[[RelativeTo]].
relative_to = move_result.relative_to.cell();
// f. Let oneWeekDays be moveResult.[[Days]].
auto one_week_days = move_result.days;
// g. Repeat, while abs(days) ≥ abs(oneWeekDays),
while (fabs(days) >= fabs(one_week_days)) {
// i. Set weeks to weeks + sign.
weeks += sign;
// ii. Set days to days oneWeekDays.
days -= one_week_days;
// iii. Set moveResult to ? MoveRelativeDate(calendar, relativeTo, oneWeek).
move_result = TRY(move_relative_date(global_object, *calendar, *relative_to, *one_week));
// iv. Set relativeTo to moveResult.[[RelativeTo]].
relative_to = move_result.relative_to.cell();
// v. Set oneWeekDays to moveResult.[[Days]].
one_week_days = move_result.days;
}
// h. Let fractionalWeeks be weeks + days / abs(oneWeekDays).
auto fractional_weeks = weeks + days / fabs(one_week_days);
// i. Set weeks to ! RoundNumberToIncrement(fractionalWeeks, increment, roundingMode).
weeks = (double)round_number_to_increment(fractional_weeks, increment, rounding_mode);
// j. Set remainder to fractionalWeeks - weeks.
remainder = fractional_weeks - weeks;
// k. Set days to 0.
days = 0;
}
// 12. Else if unit is "day", then
else if (unit == "day"sv) {
// a. Let fractionalDays be days.
auto fractional_days = days;
// b. Set days to ! RoundNumberToIncrement(days, increment, roundingMode).
days = (double)round_number_to_increment(days, increment, rounding_mode);
// c. Set remainder to fractionalDays - days.
remainder = fractional_days - days;
}
// 13. Else if unit is "hour", then
else if (unit == "hour"sv) {
// a. Let fractionalHours be (fractionalSeconds / 60 + minutes) / 60 + hours.
auto fractional_hours = (fractional_seconds / 60 + minutes) / 60 + hours;
// b. Set hours to ! RoundNumberToIncrement(fractionalHours, increment, roundingMode).
hours = (double)round_number_to_increment(fractional_hours, increment, rounding_mode);
// c. Set remainder to fractionalHours - hours.
remainder = fractional_hours - days;
// d. Set minutes, seconds, milliseconds, microseconds, and nanoseconds to 0.
minutes = 0;
seconds = 0;
milliseconds = 0;
microseconds = 0;
nanoseconds = 0;
}
// 14. Else if unit is "minute", then
else if (unit == "minute"sv) {
// a. Let fractionalMinutes be fractionalSeconds / 60 + minutes.
auto fractional_minutes = fractional_seconds / 60 + minutes;
// b. Set minutes to ! RoundNumberToIncrement(fractionalMinutes, increment, roundingMode).
minutes = (double)round_number_to_increment(fractional_minutes, increment, rounding_mode);
// c. Set remainder to fractionalMinutes - minutes.
remainder = fractional_minutes - minutes;
// d. Set seconds, milliseconds, microseconds, and nanoseconds to 0.
seconds = 0;
milliseconds = 0;
microseconds = 0;
nanoseconds = 0;
}
// 15. Else if unit is "second", then
else if (unit == "second"sv) {
// a. Set seconds to ! RoundNumberToIncrement(fractionalSeconds, increment, roundingMode).
seconds = (double)round_number_to_increment(fractional_seconds, increment, rounding_mode);
// b. Set remainder to fractionalSeconds - seconds.
remainder = fractional_seconds - seconds;
// c. Set milliseconds, microseconds, and nanoseconds to 0.
milliseconds = 0;
microseconds = 0;
nanoseconds = 0;
}
// 16. Else if unit is "millisecond", then
else if (unit == "millisecond"sv) {
// a. Let fractionalMilliseconds be nanoseconds × 10^6 + microseconds × 10^3 + milliseconds.
auto fractional_milliseconds = nanoseconds * 0.000001 + microseconds * 0.001 + milliseconds;
// b. Set milliseconds to ! RoundNumberToIncrement(fractionalMilliseconds, increment, roundingMode).
milliseconds = (double)round_number_to_increment(fractional_milliseconds, increment, rounding_mode);
// c. Set remainder to fractionalMilliseconds - milliseconds.
remainder = fractional_milliseconds - milliseconds;
// d. Set microseconds and nanoseconds to 0.
microseconds = 0;
nanoseconds = 0;
}
// 17. Else if unit is "microsecond", then
else if (unit == "microsecond"sv) {
// a. Let fractionalMicroseconds be nanoseconds × 10^3 + microseconds.
auto fractional_microseconds = nanoseconds * 0.001 + microseconds;
// b. Set microseconds to ! RoundNumberToIncrement(fractionalMicroseconds, increment, roundingMode).
microseconds = (double)round_number_to_increment(fractional_microseconds, increment, rounding_mode);
// c. Set remainder to fractionalMicroseconds - microseconds.
remainder = fractional_microseconds - microseconds;
// d. Set nanoseconds to 0.
nanoseconds = 0;
}
// 18. Else,
else {
// a. Assert: unit is "nanosecond".
VERIFY(unit == "nanosecond"sv);
// b. Set remainder to nanoseconds.
remainder = nanoseconds;
// c. Set nanoseconds to ! RoundNumberToIncrement(nanoseconds, increment, roundingMode).
nanoseconds = (double)round_number_to_increment(nanoseconds, increment, rounding_mode);
// d. Set remainder to remainder nanoseconds.
remainder -= nanoseconds;
}
// Return the Record { [[Years]]: years, [[Months]]: months, [[Weeks]]: weeks, [[Days]]: days, [[Hours]]: hours, [[Minutes]]: minutes, [[Seconds]]: seconds, [[Milliseconds]]: milliseconds, [[Microseconds]]: microseconds, [[Nanoseconds]]: nanoseconds, [[Remainder]]: remainder }.
return RoundedDuration { .years = years, .months = months, .weeks = weeks, .days = days, .hours = hours, .minutes = minutes, .seconds = seconds, .milliseconds = milliseconds, .microseconds = microseconds, .nanoseconds = nanoseconds, .remainder = remainder };
}
// 7.5.20 ToLimitedTemporalDuration ( temporalDurationLike, disallowedFields ),https://tc39.es/proposal-temporal/#sec-temporal-tolimitedtemporalduration
ThrowCompletionOr<TemporalDuration> to_limited_temporal_duration(GlobalObject& global_object, Value temporal_duration_like, Vector<StringView> const& disallowed_fields)
{
@ -479,4 +968,148 @@ ThrowCompletionOr<TemporalDuration> to_limited_temporal_duration(GlobalObject& g
return duration;
}
// 7.5.21 TemporalDurationToString ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds, precision ), https://tc39.es/proposal-temporal/#sec-temporal-temporaldurationtostring
String temporal_duration_to_string(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, Variant<StringView, u8> const& precision)
{
// 1. Assert: precision is not "minute".
if (precision.has<StringView>())
VERIFY(precision.get<StringView>() != "minute"sv);
// 2. Set seconds to the mathematical value of seconds.
// 3. Set milliseconds to the mathematical value of milliseconds.
// 4. Set microseconds to the mathematical value of microseconds.
// 5. Set nanoseconds to the mathematical value of nanoseconds.
// 6. Let sign be ! DurationSign(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds).
auto sign = duration_sign(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds);
// 7. Set microseconds to microseconds + the integral part of nanoseconds / 1000.
microseconds += trunc(nanoseconds / 1000);
// 8. Set nanoseconds to remainder(nanoseconds, 1000).
nanoseconds = fmod(nanoseconds, 1000);
// 9. Set milliseconds to milliseconds + the integral part of microseconds / 1000.
milliseconds += trunc(microseconds / 1000);
// 10. Set microseconds to remainder(microseconds, 1000).
microseconds = fmod(microseconds, 1000);
// 11. Set seconds to seconds + the integral part of milliseconds / 1000.
seconds += trunc(milliseconds / 1000);
// 12. Set milliseconds to remainder(milliseconds, 1000).
milliseconds = fmod(milliseconds, 1000);
// 13. Let datePart be "".
StringBuilder date_part;
// 14. If years is not 0, then
if (years != 0) {
// a. Set datePart to the string concatenation of abs(years) formatted as a decimal number and the code unit 0x0059 (LATIN CAPITAL LETTER Y).
date_part.appendff("{}", fabs(years));
date_part.append('Y');
}
// 15. If months is not 0, then
if (months != 0) {
// a. Set datePart to the string concatenation of datePart, abs(months) formatted as a decimal number, and the code unit 0x004D (LATIN CAPITAL LETTER M).
date_part.appendff("{}", fabs(months));
date_part.append('M');
}
// 16. If weeks is not 0, then
if (weeks != 0) {
// a. Set datePart to the string concatenation of datePart, abs(weeks) formatted as a decimal number, and the code unit 0x0057 (LATIN CAPITAL LETTER W).
date_part.appendff("{}", fabs(weeks));
date_part.append('W');
}
// 17. If days is not 0, then
if (days != 0) {
// a. Set datePart to the string concatenation of datePart, abs(days) formatted as a decimal number, and the code unit 0x0044 (LATIN CAPITAL LETTER D).
date_part.appendff("{}", fabs(days));
date_part.append('D');
}
// 18. Let timePart be "".
StringBuilder time_part;
// 19. If hours is not 0, then
if (hours != 0) {
// a. Set timePart to the string concatenation of abs(hours) formatted as a decimal number and the code unit 0x0048 (LATIN CAPITAL LETTER H).
time_part.appendff("{}", fabs(hours));
time_part.append('H');
}
// 20. If minutes is not 0, then
if (minutes != 0) {
// a. Set timePart to the string concatenation of timePart, abs(minutes) formatted as a decimal number, and the code unit 0x004D (LATIN CAPITAL LETTER M).
time_part.appendff("{}", fabs(minutes));
time_part.append('M');
}
// 21. If any of seconds, milliseconds, microseconds, and nanoseconds are not 0; or years, months, weeks, days, hours, and minutes are all 0, then
if ((seconds != 0 || milliseconds != 0 || microseconds != 0 || nanoseconds != 0) || (years == 0 && months == 0 && weeks == 0 && days == 0 && hours == 0 && minutes == 0)) {
// a. Let fraction be abs(milliseconds) × 10^6 + abs(microseconds) × 10^3 + abs(nanoseconds).
auto fraction = fabs(milliseconds) * 1'000'000 + fabs(microseconds) * 1'000 + fabs(nanoseconds);
// b. Let decimalPart be fraction formatted as a nine-digit decimal number, padded to the left with zeroes if necessary.
// NOTE: padding with zeros leads to weird results when applied to a double. Not sure if that's a bug in AK/Format.h or if I'm doing this wrong.
auto decimal_part = String::formatted("{:09}", (u64)fraction);
// c. If precision is "auto", then
if (precision.has<StringView>() && precision.get<StringView>() == "auto"sv) {
// i. Set decimalPart to the longest possible substring of decimalPart starting at position 0 and not ending with the code unit 0x0030 (DIGIT ZERO).
// NOTE: trim() would keep the left-most 0.
while (decimal_part.ends_with('0'))
decimal_part = decimal_part.substring(0, decimal_part.length() - 1);
}
// d. Else if precision = 0, then
else if (precision.get<u8>() == 0) {
// i. Set decimalPart to "".
decimal_part = String::empty();
}
// e. Else,
else {
// i. Set decimalPart to the substring of decimalPart from 0 to precision.
decimal_part = decimal_part.substring(0, precision.get<u8>());
}
// f. Let secondsPart be abs(seconds) formatted as a decimal number.
StringBuilder seconds_part;
seconds_part.appendff("{}", fabs(seconds));
// g. If decimalPart is not "", then
if (!decimal_part.is_empty()) {
// i. Set secondsPart to the string-concatenation of secondsPart, the code unit 0x002E (FULL STOP), and decimalPart.
seconds_part.append('.');
seconds_part.append(decimal_part);
}
// h. Set timePart to the string concatenation of timePart, secondsPart, and the code unit 0x0053 (LATIN CAPITAL LETTER S).
time_part.append(seconds_part.string_view());
time_part.append('S');
}
// 22. Let signPart be the code unit 0x002D (HYPHEN-MINUS) if sign < 0, and otherwise the empty String.
auto sign_part = sign < 0 ? "-"sv : ""sv;
// 23. Let result be the string concatenation of signPart, the code unit 0x0050 (LATIN CAPITAL LETTER P) and datePart.
StringBuilder result;
result.append(sign_part);
result.append('P');
result.append(date_part.string_view());
// 24. If timePart is not "", then
if (!time_part.is_empty()) {
// a. Set result to the string concatenation of result, the code unit 0x0054 (LATIN CAPITAL LETTER T), and timePart.
result.append('T');
result.append(time_part.string_view());
}
// 25. Return result.
return result.to_string();
}
}