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LibJS: Implement Temporal.PlainDate.compare

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Idan Horowitz 2021-07-26 17:00:42 +03:00 • committed by Linus Groh
parent 2c6bd3a61b
commit 07485802c6
5 changed files with 67 additions and 0 deletions
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33
Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
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@ -220,4 +220,37 @@ bool is_valid_iso_date(i32 year, u8 month, u8 day)
return true;
}
// 3.5.10 CompareISODate ( y1, m1, d1, y2, m2, d2 ), https://tc39.es/proposal-temporal/#sec-temporal-compareisodate
i8 compare_iso_date(i32 year1, u8 month1, u8 day1, i32 year2, u8 month2, u8 day2)
{
// 1. Assert: y1, m1, d1, y2, m2, and d2 are integers.
// 2. If y1 > y2, return 1.
if (year1 > year2)
return 1;
// 3. If y1 < y2, return -1.
if (year1 < year2)
return -1;
// 4. If m1 > m2, return 1.
if (month1 > month2)
return 1;
// 5. If m1 < m2, return -1.
if (month1 < month2)
return -1;
// 6. If d1 > d2, return 1.
if (day1 > day2)
return 1;
// 7. If d1 < d2, return -1.
if (day1 < day2)
return -1;
// 8. Return 0.
return 0;
}
}