This also allows removing a bit of a BigInt hack to resolve plurality of
BigInt numbers (because the AOs used in ResolvePlural support BigInt,
wherease the naive Unicode::select_pattern_with_plurality did not).
We use cardinal form here; the number format patterns in the CLDR align
with the cardinal form of the plural rules.
The NumberFormat spec casually indicates the need for a PluralRules
object without explicity saying so, with text such as:
"which may depend on x in languages having different plural forms."
Other implementations actually do create a PluralRules object to resolve
those cases with ResolvePlural. However, ResolvePlural doesn't need much
from PluralRules to operate, so this can be abstracted out for use in
NumberFormat without the need to allocate a PluralRules instance.
The PluralCategory enum is currently generated for plural rules. Instead
of generating it, this moves the enum to the public LibUnicode header.
While it was nice to auto-discover these values, they are well defined
by TR-35, and we will need their values from within the number format
code generator (which can't rely on the plural rules generator having
run yet). Further, number format will require additional values in the
enum that plural rules doesn't know about.
The JS::Intl enum was added when implementing the PluralRules
constructor. Now that LibUnicode has a plural rules implementation,
replace the JS::Intl enum with the analagous Unicode enum.
This commit has no behavior changes.
In particular, this does not fix any of the wrong uses of the previous
default parameter (which used to be 'false', meaning "only replace the
first occurence in the string"). It simply replaces the default uses by
String::replace(..., ReplaceMode::FirstOnly), leaving them incorrect.
There was an awful lot of JS::Value <-> double conversion going on, even
through these AOs only work with number values anyway.
They don't need a global object either as they won't allocate or throw,
that was simply to pass it to infallible calls of ToIntegerOrInfinity.
This is an editorial change in the Intl spec. See:
087995c233d29c
This also adds a missing spec link for the sanctioned units and fixes a
broken spec link for IsSanctionedSingleUnitIdentifier. In LibUnicode,
the NumberFormat generator is updated to use the constexpr helper to
retrieve sanctioned units.
This is an editorial change in the Intl spec:
7c13db4
This also normalizes the spelling of the "Internal slots" heading in
Intl.Collator, which is another editorial change in the Intl spec:
ec064bd
