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LibJS: Adjust ISO8601 representation for years between 1 BCE and 999 CE

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This is a normative change in the Temporal spec.

See: 39eeecd
This commit is contained in:
Linus Groh 2022-03-31 00:54:27 +01:00
parent cfb04765fa
commit 8e175b4959
3 changed files with 17 additions and 10 deletions
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13
Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
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@ -499,13 +499,14 @@ String pad_iso_year(i32 y)
{
// 1. Assert: y is an integer.
// 2. If y > 999 and y ≤ 9999, then
if (y > 999 && y <= 9999) {
// a. Return y formatted as a four-digit decimal number.
return String::number(y);
// 2. If y ≥ 0 and y ≤ 9999, then
if (y >= 0 && y <= 9999) {
// a. Return y formatted as a four-digit decimal number, padded to the left with zeroes as necessary.
return String::formatted("{:04}", y);
}
// 3. If y ≥ 0, let yearSign be "+"; otherwise, let yearSign be "-".
auto year_sign = y >= 0 ? '+' : '-';
// 3. If y > 0, let yearSign be "+"; otherwise, let yearSign be "-".
auto year_sign = y > 0 ? '+' : '-';
// 4. Let year be abs(y), formatted as a six-digit decimal number, padded to the left with zeroes as necessary.
// 5. Return the string-concatenation of yearSign and year.