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LibJS: Update ISODaysInMonth in Calendar.cpp

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This commit ticks away a box in #15525
Temporal commit: tc39/proposal-temporal@eee1e27
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BodilessSleeper 2023-01-10 03:58:20 +01:00 • committed by Linus Groh
parent 7e3625b0e2
commit 9a60d3509d
1 changed files with 6 additions and 8 deletions
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14
Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
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@ -652,20 +652,18 @@ ThrowCompletionOr<Object*> consolidate_calendars(VM& vm, Object& one, Object& tw
// 12.2.31 ISODaysInMonth ( year, month ), https://tc39.es/proposal-temporal/#sec-temporal-isodaysinmonth // 12.2.31 ISODaysInMonth ( year, month ), https://tc39.es/proposal-temporal/#sec-temporal-isodaysinmonth
u8 iso_days_in_month(i32 year, u8 month) u8 iso_days_in_month(i32 year, u8 month)
{ {
// 1. Assert: year is an integer. // 1. If month is 1, 3, 5, 7, 8, 10, or 12, return 31.
// 2. Assert: month is an integer, month ≥ 1, and month ≤ 12.
VERIFY(month >= 1 && month <= 12);
// 3. If month is 1, 3, 5, 7, 8, 10, or 12, return 31.
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
return 31; return 31;
// 4. If month is 4, 6, 9, or 11, return 30. // 2. If month is 4, 6, 9, or 11, return 30.
if (month == 4 || month == 6 || month == 9 || month == 11) if (month == 4 || month == 6 || month == 9 || month == 11)
return 30; return 30;
// 5. Return 28 + ℝ(InLeapYear(TimeFromYear(𝔽(year)))). // 3. Assert: month is 2.
VERIFY(month == 2);
// 4. Return 28 + ℝ(InLeapYear(TimeFromYear(𝔽(year)))).
return 28 + JS::in_leap_year(time_from_year(year)); return 28 + JS::in_leap_year(time_from_year(year));
} }