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LibUnicode: Generate a list of available plural categories per locale

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Separate lists are generated for cardinal and ordinal form.
This commit is contained in:
Timothy Flynn 2022-07-07 12:05:05 -04:00 committed by Linus Groh
parent ea78bac36d
commit 8aeacccd82
3 changed files with 52 additions and 0 deletions
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45
Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodePluralRules.cpp
View file

@ -503,6 +503,21 @@ static constexpr Array<PluralCategoryFunction, @size@> s_@form@_functions { {)~~
)~~~");
};
auto append_categories = [&](auto const& name, auto const& rules) {
generator.set("name", name);
generator.set("size", String::number(rules.size() + 1));
generator.append(R"~~~(
static constexpr Array<PluralCategory, @size@> @name@ { { PluralCategory::Other)~~~");
for (auto [category, condition] : rules) {
generator.set("category"sv, format_identifier({}, category));
generator.append(", PluralCategory::@category@"sv);
}
generator.append("} };");
};
append_string_conversions("PluralCategory"sv, "plural_category"sv, locale_data.categories);
for (auto [locale, rules] : locale_data.locales) {
@ -513,6 +528,18 @@ static constexpr Array<PluralCategoryFunction, @size@> s_@form@_functions { {)~~
append_lookup_table("cardinal"sv);
append_lookup_table("ordinal"sv);
generate_mapping(generator, locales, "PluralCategory"sv, "s_cardinal_categories"sv, "s_cardinal_categories_{}", format_identifier,
[&](auto const& name, auto const& locale) {
auto& rules = locale_data.locales.find(locale)->value;
append_categories(name, rules.rules_for_form("cardinal"sv));
});
generate_mapping(generator, locales, "PluralCategory"sv, "s_ordinal_categories"sv, "s_ordinal_categories_{}", format_identifier,
[&](auto const& name, auto const& locale) {
auto& rules = locale_data.locales.find(locale)->value;
append_categories(name, rules.rules_for_form("ordinal"sv));
});
generator.append(R"~~~(
PluralCategory determine_plural_category(StringView locale, PluralForm form, PluralOperands operands)
{
@ -535,6 +562,24 @@ PluralCategory determine_plural_category(StringView locale, PluralForm form, Plu
return decider(move(operands));
}
Span<PluralCategory const> available_plural_categories(StringView locale, PluralForm form)
{
auto locale_value = locale_from_string(locale);
if (!locale_value.has_value())
return {};
auto locale_index = to_underlying(*locale_value) - 1; // Subtract 1 because 0 == Locale::None.
switch (form) {
case PluralForm::Cardinal:
return s_cardinal_categories[locale_index];
case PluralForm::Ordinal:
return s_ordinal_categories[locale_index];
}
VERIFY_NOT_REACHED();
}
}
)~~~");

6
Userland/Libraries/LibUnicode/PluralRules.cpp
View file

@ -56,4 +56,10 @@ PluralCategory __attribute__((weak)) determine_plural_category(StringView, Plura
return PluralCategory::Other;
}
Span<PluralCategory const> __attribute__((weak)) available_plural_categories(StringView, PluralForm)
{
static constexpr Array<PluralCategory, 1> categories { { PluralCategory::Other } };
return categories.span();
}
}

1
Userland/Libraries/LibUnicode/PluralRules.h
View file

@ -61,5 +61,6 @@ Optional<PluralCategory> plural_category_from_string(StringView category);
StringView plural_category_to_string(PluralCategory category);
PluralCategory determine_plural_category(StringView locale, PluralForm form, PluralOperands operands);
Span<PluralCategory const> available_plural_categories(StringView locale, PluralForm form);
}