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LibUnicode: Replace NumberFormat::Plurality with Unicode::PluralCategory

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To prepare for using plural rules within number & duration format, this
removes the NumberFormat::Plurality enumeration.

This also adds PluralCategory::ExactlyZero & PluralCategory::ExactlyOne.
These are used in locales like French, where PluralCategory::One really
means any value from 0.00 to 1.99. PluralCategory::ExactlyOne means only
the value 1, as the name implies. These exact rules are not known by the
general plural rules, they are explicitly for number / currency format.
This commit is contained in:
Timothy Flynn 2022-07-08 10:16:43 -04:00 • committed by Linus Groh
parent cc5c707649
commit 232df4196b
3 changed files with 26 additions and 40 deletions
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12
Userland/Libraries/LibUnicode/PluralRules.h
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@ -25,6 +25,10 @@ enum class PluralCategory : u8 {
Two,
Few,
Many,
// https://unicode.org/reports/tr35/tr35-numbers.html#Explicit_0_1_rules
ExactlyZero,
ExactlyOne,
};
// https://unicode.org/reports/tr35/tr35-numbers.html#Plural_Operand_Meanings
@ -81,6 +85,10 @@ constexpr PluralCategory plural_category_from_string(StringView category)
return PluralCategory::Few;
if (category == "many"sv)
return PluralCategory::Many;
if (category == "0"sv)
return PluralCategory::ExactlyZero;
if (category == "1"sv)
return PluralCategory::ExactlyOne;
VERIFY_NOT_REACHED();
}
@ -100,6 +108,10 @@ constexpr StringView plural_category_to_string(PluralCategory category)
return "few"sv;
case PluralCategory::Many:
return "many"sv;
case PluralCategory::ExactlyZero:
return "0"sv;
case PluralCategory::ExactlyOne:
return "1"sv;
}
VERIFY_NOT_REACHED();