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LibJS: Implement stringification Temporal.PlainDateTime prototypes

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Timothy Flynn 2024-11-23 18:20:39 -05:00 • committed by Andreas Kling
commit d314fcce7a
Notes: github-actions[bot] 2024-11-24 10:45:33 +00:00
7 changed files with 241 additions and 0 deletions
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42
Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
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@ -216,6 +216,32 @@ ThrowCompletionOr<GC::Ref<PlainDateTime>> create_temporal_date_time(VM& vm, ISOD
return object;
}
// 5.5.9 ISODateTimeToString ( isoDateTime, calendar, precision, showCalendar ), https://tc39.es/proposal-temporal/#sec-temporal-isodatetimetostring
String iso_date_time_to_string(ISODateTime const& iso_date_time, StringView calendar, SecondsStringPrecision::Precision precision, ShowCalendar show_calendar)
{
// 1. Let yearString be PadISOYear(isoDateTime.[[ISODate]].[[Year]]).
auto year_string = pad_iso_year(iso_date_time.iso_date.year);
// 2. Let monthString be ToZeroPaddedDecimalString(isoDateTime.[[ISODate]].[[Month]], 2).
auto month = iso_date_time.iso_date.month;
// 3. Let dayString be ToZeroPaddedDecimalString(isoDateTime.[[ISODate]].[[Day]], 2).
auto day = iso_date_time.iso_date.day;
// 4. Let subSecondNanoseconds be isoDateTime.[[Time]].[[Millisecond]] × 10**6 + isoDateTime.[[Time]].[[Microsecond]] × 10**3 + isoDateTime.[[Time]].[[Nanosecond]].
auto sub_second_nanoseconds = (static_cast<u64>(iso_date_time.time.millisecond) * 1'000'000) + (static_cast<u64>(iso_date_time.time.microsecond) * 1000) + static_cast<u64>(iso_date_time.time.nanosecond);
// 5. Let timeString be FormatTimeString(isoDateTime.[[Time]].[[Hour]], isoDateTime.[[Time]].[[Minute]], isoDateTime.[[Time]].[[Second]], subSecondNanoseconds, precision).
auto time_string = format_time_string(iso_date_time.time.hour, iso_date_time.time.minute, iso_date_time.time.second, sub_second_nanoseconds, precision);
// 6. Let calendarString be FormatCalendarAnnotation(calendar, showCalendar).
auto calendar_string = format_calendar_annotation(calendar, show_calendar);
// 7. Return the string-concatenation of yearString, the code unit 0x002D (HYPHEN-MINUS), monthString, the code unit 0x002D (HYPHEN-MINUS),
// dayString, 0x0054 (LATIN CAPITAL LETTER T), timeString, and calendarString.
return MUST(String::formatted("{}-{:02}-{:02}T{}{}", year_string, month, day, time_string, calendar_string));
}
// 5.5.10 CompareISODateTime ( isoDateTime1, isoDateTime2 ), https://tc39.es/proposal-temporal/#sec-temporal-compareisodatetime
i8 compare_iso_date_time(ISODateTime const& iso_date_time1, ISODateTime const& iso_date_time2)
{
@ -230,6 +256,22 @@ i8 compare_iso_date_time(ISODateTime const& iso_date_time1, ISODateTime const& i
return compare_time_record(iso_date_time1.time, iso_date_time2.time);
}
// 5.5.11 RoundISODateTime ( isoDateTime, increment, unit, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundisodatetime
ISODateTime round_iso_date_time(ISODateTime const& iso_date_time, u64 increment, Unit unit, RoundingMode rounding_mode)
{
// 1. Assert: ISODateTimeWithinLimits(isoDateTime) is true.
VERIFY(iso_date_time_within_limits(iso_date_time));
// 2. Let roundedTime be RoundTime(isoDateTime.[[Time]], increment, unit, roundingMode).
auto rounded_time = round_time(iso_date_time.time, increment, unit, rounding_mode);
// 3. Let balanceResult be BalanceISODate(isoDateTime.[[ISODate]].[[Year]], isoDateTime.[[ISODate]].[[Month]], isoDateTime.[[ISODate]].[[Day]] + roundedTime.[[Days]]).
auto balance_result = balance_iso_date(iso_date_time.iso_date.year, iso_date_time.iso_date.month, iso_date_time.iso_date.day + rounded_time.days);
// 4. Return CombineISODateAndTimeRecord(balanceResult, roundedTime).
return combine_iso_date_and_time_record(balance_result, rounded_time);
}
// 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)
{