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LibJS: Implement the Intl.PluralRules constructor

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Timothy Flynn 2022-01-28 13:11:34 -05:00 • committed by Linus Groh
parent 0087804d10
commit 348059bffd
4 changed files with 221 additions and 1 deletions
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45
Userland/Libraries/LibJS/Runtime/Intl/PluralRules.cpp
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@ -4,6 +4,8 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Array.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/PluralRules.h>
namespace JS::Intl {
@ -37,4 +39,47 @@ StringView PluralRules::type_string() const
}
}
// 16.1.1 InitializePluralRules ( pluralRules, locales, options ), https://tc39.es/ecma402/#sec-initializepluralrules
ThrowCompletionOr<PluralRules*> initialize_plural_rules(GlobalObject& global_object, PluralRules& plural_rules, Value locales_value, Value options_value)
{
auto& vm = global_object.vm();
// 1. Let requestedLocales be ? CanonicalizeLocaleList(locales).
auto requested_locales = TRY(canonicalize_locale_list(global_object, locales_value));
// 2. Set options to ? CoerceOptionsToObject(options).
auto* options = TRY(coerce_options_to_object(global_object, options_value));
// 3. Let opt be a new Record.
LocaleOptions opt {};
// 4. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
auto matcher = TRY(get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, AK::Array { "lookup"sv, "best fit"sv }, "best fit"sv));
// 5. Set opt.[[localeMatcher]] to matcher.
opt.locale_matcher = matcher;
// 6. Let t be ? GetOption(options, "type", "string", « "cardinal", "ordinal" », "cardinal").
auto type = TRY(get_option(global_object, *options, vm.names.type, Value::Type::String, AK::Array { "cardinal"sv, "ordinal"sv }, "cardinal"sv));
// 7. Set pluralRules.[[Type]] to t.
plural_rules.set_type(type.as_string().string());
// 8. Perform ? SetNumberFormatDigitOptions(pluralRules, options, +0𝔽, 3𝔽, "standard").
TRY(set_number_format_digit_options(global_object, plural_rules, *options, 0, 3, NumberFormat::Notation::Standard));
// 9. Let localeData be %PluralRules%.[[LocaleData]].
// 10. Let r be ResolveLocale(%PluralRules%.[[AvailableLocales]], requestedLocales, opt, %PluralRules%.[[RelevantExtensionKeys]], localeData).
auto result = resolve_locale(requested_locales, opt, {});
// 11. Set pluralRules.[[Locale]] to r.[[locale]].
plural_rules.set_locale(move(result.locale));
// Non-standard, the data locale is used by our NumberFormat implementation.
plural_rules.set_data_locale(move(result.data_locale));
// 12. Return pluralRules.
return &plural_rules;
}
}

3
Userland/Libraries/LibJS/Runtime/Intl/PluralRules.h
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@ -8,6 +8,7 @@
#include <AK/String.h>
#include <AK/StringView.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Intl/NumberFormat.h>
#include <LibJS/Runtime/Object.h>
@ -33,4 +34,6 @@ private:
Type m_type { Type::Cardinal }; // [[Type]]
};
ThrowCompletionOr<PluralRules*> initialize_plural_rules(GlobalObject& global_object, PluralRules& plural_rules, Value locales_value, Value options_value);
}

6
Userland/Libraries/LibJS/Runtime/Intl/PluralRulesConstructor.cpp
View file

@ -38,13 +38,17 @@ ThrowCompletionOr<Value> PluralRulesConstructor::call()
// 16.2.1 Intl.PluralRules ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.pluralrules
ThrowCompletionOr<Object*> PluralRulesConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto& global_object = this->global_object();
auto locales = vm.argument(0);
auto options = vm.argument(1);
// 2. Let pluralRules be ? OrdinaryCreateFromConstructor(NewTarget, "%PluralRules.prototype%", « [[InitializedPluralRules]], [[Locale]], [[Type]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[RoundingType]] »).
auto* plural_rules = TRY(ordinary_create_from_constructor<PluralRules>(global_object, new_target, &GlobalObject::intl_plural_rules_prototype));
// 3. Return ? InitializePluralRules(pluralRules, locales, options).
return plural_rules;
return TRY(initialize_plural_rules(global_object, *plural_rules, locales, options));
}
}