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LibJS: Remove IsISOLeapYear

This is an editorial change in the Temporal spec.

See: a36bdd4
This commit is contained in:
Linus Groh 2022-05-07 00:03:19 +02:00
parent 6d0d7c8fd0
commit a216c0b6df
3 changed files with 23 additions and 45 deletions

View file

@ -597,28 +597,7 @@ ThrowCompletionOr<Object*> consolidate_calendars(GlobalObject& global_object, Ob
return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidCalendar);
}
// 12.2.29 IsISOLeapYear ( year ), https://tc39.es/proposal-temporal/#sec-temporal-isisoleapyear
bool is_iso_leap_year(i32 year)
{
// 1. Assert: year is an integer.
// 2. If year modulo 4 ≠ 0, return false.
if (year % 4 != 0)
return false;
// 3. If year modulo 400 = 0, return true.
if (year % 400 == 0)
return true;
// 4. If year modulo 100 = 0, return false.
if (year % 100 == 0)
return false;
// 5. Return true.
return true;
}
// 12.2.30 ISODaysInMonth ( year, month ), https://tc39.es/proposal-temporal/#sec-temporal-isodaysinmonth
// 12.2.29 ISODaysInMonth ( year, month ), https://tc39.es/proposal-temporal/#sec-temporal-isodaysinmonth
u8 iso_days_in_month(i32 year, u8 month)
{
// 1. Assert: year is an integer.
@ -634,15 +613,11 @@ u8 iso_days_in_month(i32 year, u8 month)
if (month == 4 || month == 6 || month == 9 || month == 11)
return 30;
// 5. If ! IsISOLeapYear(year) is true, return 29.
if (is_iso_leap_year(year))
return 29;
// 6. Return 28.
return 28;
// 5. Return 28 + (InLeapYear(TimeFromYear(𝔽(year)))).
return 28 + JS::in_leap_year(time_from_year(year));
}
// 12.2.31 ToISODayOfWeek ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisodayofweek
// 12.2.30 ToISODayOfWeek ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisodayofweek
u8 to_iso_day_of_week(i32 year, u8 month, u8 day)
{
// 1. Assert: year is an integer.
@ -662,7 +637,7 @@ u8 to_iso_day_of_week(i32 year, u8 month, u8 day)
return day_of_week == 0 ? 7 : day_of_week;
}
// 12.2.32 ToISODayOfYear ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisodayofyear
// 12.2.31 ToISODayOfYear ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisodayofyear
u16 to_iso_day_of_year(i32 year, u8 month, u8 day)
{
// 1. Assert: year is an integer.
@ -677,7 +652,7 @@ u16 to_iso_day_of_year(i32 year, u8 month, u8 day)
return days;
}
// 12.2.33 ToISOWeekOfYear ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisoweekofyear
// 12.2.32 ToISOWeekOfYear ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-toisoweekofyear
u8 to_iso_week_of_year(i32 year, u8 month, u8 day)
{
// 1. Assert: year is an integer.
@ -696,7 +671,7 @@ u8 to_iso_week_of_year(i32 year, u8 month, u8 day)
// year is a leap year and ends with a Friday (i.e. the first day of the given year is a
// Saturday, or day 6), it has 53 weeks, and 52 weeks otherwise.
auto day_of_jump = to_iso_day_of_week(year, 1, 1);
if (day_of_jump == 5 || (is_iso_leap_year(year - 1) && day_of_jump == 6))
if (day_of_jump == 5 || (in_leap_year(time_from_year(year - 1)) && day_of_jump == 6))
return 53;
else
return 52;
@ -709,7 +684,7 @@ u8 to_iso_week_of_year(i32 year, u8 month, u8 day)
return week;
}
// 12.2.34 BuildISOMonthCode ( month ), https://tc39.es/proposal-temporal/#sec-buildisomonthcode
// 12.2.33 BuildISOMonthCode ( month ), https://tc39.es/proposal-temporal/#sec-buildisomonthcode
String build_iso_month_code(u8 month)
{
// 1. Let numberPart be ToZeroPaddedDecimalString(month, 2).
@ -717,7 +692,7 @@ String build_iso_month_code(u8 month)
return String::formatted("M{:02}", month);
}
// 12.2.35 ResolveISOMonth ( fields ), https://tc39.es/proposal-temporal/#sec-temporal-resolveisomonth
// 12.2.34 ResolveISOMonth ( fields ), https://tc39.es/proposal-temporal/#sec-temporal-resolveisomonth
ThrowCompletionOr<double> resolve_iso_month(GlobalObject& global_object, Object const& fields)
{
auto& vm = global_object.vm();
@ -777,7 +752,7 @@ ThrowCompletionOr<double> resolve_iso_month(GlobalObject& global_object, Object
return number_part_integer;
}
// 12.2.36 ISODateFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isodatefromfields
// 12.2.35 ISODateFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isodatefromfields
ThrowCompletionOr<ISODate> iso_date_from_fields(GlobalObject& global_object, Object const& fields, Object const& options)
{
auto& vm = global_object.vm();
@ -811,7 +786,7 @@ ThrowCompletionOr<ISODate> iso_date_from_fields(GlobalObject& global_object, Obj
return regulate_iso_date(global_object, year.as_double(), month, day.as_double(), overflow);
}
// 12.2.37 ISOYearMonthFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isoyearmonthfromfields
// 12.2.36 ISOYearMonthFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isoyearmonthfromfields
ThrowCompletionOr<ISOYearMonth> iso_year_month_from_fields(GlobalObject& global_object, Object const& fields, Object const& options)
{
auto& vm = global_object.vm();
@ -841,7 +816,7 @@ ThrowCompletionOr<ISOYearMonth> iso_year_month_from_fields(GlobalObject& global_
return ISOYearMonth { .year = result.year, .month = result.month, .reference_iso_day = 1 };
}
// 12.2.38 ISOMonthDayFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthdayfromfields
// 12.2.37 ISOMonthDayFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthdayfromfields
ThrowCompletionOr<ISOMonthDay> iso_month_day_from_fields(GlobalObject& global_object, Object const& fields, Object const& options)
{
auto& vm = global_object.vm();
@ -899,7 +874,7 @@ ThrowCompletionOr<ISOMonthDay> iso_month_day_from_fields(GlobalObject& global_ob
return ISOMonthDay { .month = result->month, .day = result->day, .reference_iso_year = reference_iso_year };
}
// 12.2.39 ISOYear ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isoyear
// 12.2.38 ISOYear ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isoyear
i32 iso_year(Object& temporal_object)
{
// 1. Assert: temporalObject has an [[ISOYear]] internal slot.
@ -917,7 +892,7 @@ i32 iso_year(Object& temporal_object)
VERIFY_NOT_REACHED();
}
// 12.2.40 ISOMonth ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonth
// 12.2.39 ISOMonth ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonth
u8 iso_month(Object& temporal_object)
{
// 1. Assert: temporalObject has an [[ISOMonth]] internal slot.
@ -935,7 +910,7 @@ u8 iso_month(Object& temporal_object)
VERIFY_NOT_REACHED();
}
// 12.2.41 ISOMonthCode ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthcode
// 12.2.40 ISOMonthCode ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthcode
String iso_month_code(Object& temporal_object)
{
// 1. Assert: temporalObject has an [[ISOMonth]] internal slot.
@ -953,7 +928,7 @@ String iso_month_code(Object& temporal_object)
VERIFY_NOT_REACHED();
}
// 12.2.42 ISODay ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthcode
// 12.2.41 ISODay ( temporalObject ), https://tc39.es/proposal-temporal/#sec-temporal-isomonthcode
u8 iso_day(Object& temporal_object)
{
// 1. Assert: temporalObject has an [[ISODay]] internal slot.
@ -971,7 +946,7 @@ u8 iso_day(Object& temporal_object)
VERIFY_NOT_REACHED();
}
// 12.2.43 DefaultMergeFields ( fields, additionalFields ), https://tc39.es/proposal-temporal/#sec-temporal-defaultmergefields
// 12.2.42 DefaultMergeFields ( fields, additionalFields ), https://tc39.es/proposal-temporal/#sec-temporal-defaultmergefields
ThrowCompletionOr<Object*> default_merge_fields(GlobalObject& global_object, Object const& fields, Object const& additional_fields)
{
auto& vm = global_object.vm();

View file

@ -62,7 +62,6 @@ ThrowCompletionOr<PlainMonthDay*> calendar_month_day_from_fields(GlobalObject&,
String format_calendar_annotation(StringView id, StringView show_calendar);
ThrowCompletionOr<bool> calendar_equals(GlobalObject&, Object& one, Object& two);
ThrowCompletionOr<Object*> consolidate_calendars(GlobalObject&, Object& one, Object& two);
bool is_iso_leap_year(i32 year);
u8 iso_days_in_month(i32 year, u8 month);
u8 to_iso_day_of_week(i32 year, u8 month, u8 day);
u16 to_iso_day_of_year(i32 year, u8 month, u8 day);

View file

@ -466,8 +466,12 @@ JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::in_leap_year)
temporal_date_like = TRY(to_temporal_date(global_object, temporal_date_like));
}
// 5. Return ! IsISOLeapYear(temporalDateLike.[[ISOYear]]).
return Value(is_iso_leap_year(iso_year(temporal_date_like.as_object())));
// 5. If InLeapYear(TimeFromYear(𝔽(temporalDateLike.[[ISOYear]]))) is 1𝔽, return true.
if (JS::in_leap_year(time_from_year(iso_year(temporal_date_like.as_object()))))
return Value(true);
// 6. Return false.
return Value(false);
}
// 12.4.21 Temporal.Calendar.prototype.fields ( fields ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.fields