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LibJS: Add an explicit operation for merging calendar field names

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This is an editorial change in the Temporal spec.

See: 2bd7977
This commit is contained in:
Linus Groh 2022-06-15 00:05:05 +01:00
parent ee80164ac1
commit 3025f77991
4 changed files with 33 additions and 20 deletions
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28
Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
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@ -1004,4 +1004,32 @@ ThrowCompletionOr<Object*> default_merge_calendar_fields(GlobalObject& global_ob
return merged;
}
// 12.2.41 CalendarMergeFieldNames ( receiverFieldNames, inputFieldNames ), https://tc39.es/proposal-temporal/#sec-temporal-calendarmergefieldnames
Vector<String> calendar_merge_field_names(Vector<String> const& receiver_field_names, Vector<String> const& input_field_names)
{
// 1. Let merged be a new empty List.
Vector<String> merged;
// 2. For each element name of receiverFieldNames, do
for (auto const& field_name : receiver_field_names) {
// a. If merged does not contain name, then
if (!merged.contains_slow(field_name)) {
// i. Append name to merged.
merged.append(field_name);
}
}
// 3. For each element name of inputFieldNames, do
for (auto const& field_name : input_field_names) {
// a. If merged does not contain name, then
if (!merged.contains_slow(field_name)) {
// i. Append name to merged.
merged.append(field_name);
}
}
// 4. Return merged.
return merged;
}
}