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5764eeab05
This proposal has reached stage 4 and was merged into the ECMA-402 spec. See: https://github.com/tc39/ecma402/commit/3ff3cc7
117 lines
5 KiB
C++
117 lines
5 KiB
C++
/*
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* Copyright (c) 2022-2025, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Array.h>
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Intl/AbstractOperations.h>
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#include <LibJS/Runtime/Intl/NumberFormatConstructor.h>
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#include <LibJS/Runtime/Intl/PluralRules.h>
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#include <LibJS/Runtime/Intl/PluralRulesConstructor.h>
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namespace JS::Intl {
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GC_DEFINE_ALLOCATOR(PluralRulesConstructor);
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// 17.1 The Intl.PluralRules Constructor, https://tc39.es/ecma402/#sec-intl-pluralrules-constructor
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PluralRulesConstructor::PluralRulesConstructor(Realm& realm)
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: NativeFunction(realm.vm().names.PluralRules.as_string(), realm.intrinsics().function_prototype())
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{
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}
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void PluralRulesConstructor::initialize(Realm& realm)
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{
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Base::initialize(realm);
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auto& vm = this->vm();
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// 17.2.1 Intl.PluralRules.prototype, https://tc39.es/ecma402/#sec-intl.pluralrules.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().intl_plural_rules_prototype(), 0);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(realm, vm.names.supportedLocalesOf, supported_locales_of, 1, attr);
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}
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// 17.1.1 Intl.PluralRules ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.pluralrules
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ThrowCompletionOr<Value> PluralRulesConstructor::call()
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{
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// 1. If NewTarget is undefined, throw a TypeError exception.
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return vm().throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, "Intl.PluralRules");
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}
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// 17.1.1 Intl.PluralRules ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.pluralrules
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ThrowCompletionOr<GC::Ref<Object>> PluralRulesConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto locales_value = vm.argument(0);
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auto options_value = vm.argument(1);
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// 2. Let pluralRules be ? OrdinaryCreateFromConstructor(NewTarget, "%Intl.PluralRules.prototype%", « [[InitializedPluralRules]], [[Locale]], [[Type]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[RoundingType]], [[RoundingIncrement]], [[RoundingMode]], [[ComputedRoundingPriority]], [[TrailingZeroDisplay]] »).
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auto plural_rules = TRY(ordinary_create_from_constructor<PluralRules>(vm, new_target, &Intrinsics::intl_plural_rules_prototype));
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// 3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
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auto requested_locales = TRY(canonicalize_locale_list(vm, locales_value));
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// 4. Set options to ? CoerceOptionsToObject(options).
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auto* options = TRY(coerce_options_to_object(vm, options_value));
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// 5. Let opt be a new Record.
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LocaleOptions opt {};
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// 6. Let matcher be ? GetOption(options, "localeMatcher", string, « "lookup", "best fit" », "best fit").
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auto matcher = TRY(get_option(vm, *options, vm.names.localeMatcher, OptionType::String, AK::Array { "lookup"sv, "best fit"sv }, "best fit"sv));
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// 7. Set opt.[[localeMatcher]] to matcher.
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opt.locale_matcher = matcher;
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// 8. Let r be ResolveLocale(%Intl.PluralRules%.[[AvailableLocales]], requestedLocales, opt, %Intl.PluralRules%.[[RelevantExtensionKeys]], %Intl.PluralRules%.[[LocaleData]]).
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auto result = resolve_locale(requested_locales, opt, {});
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// 9. Set pluralRules.[[Locale]] to r.[[locale]].
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plural_rules->set_locale(move(result.locale));
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// 10. Let t be ? GetOption(options, "type", string, « "cardinal", "ordinal" », "cardinal").
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auto type = TRY(get_option(vm, *options, vm.names.type, OptionType::String, AK::Array { "cardinal"sv, "ordinal"sv }, "cardinal"sv));
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// 11. Set pluralRules.[[Type]] to t.
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plural_rules->set_type(type.as_string().utf8_string_view());
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// 12. Perform ? SetNumberFormatDigitOptions(pluralRules, options, 0, 3, "standard").
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TRY(set_number_format_digit_options(vm, plural_rules, *options, 0, 3, Unicode::Notation::Standard));
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// Non-standard, create an ICU number formatter for this Intl object.
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auto formatter = Unicode::NumberFormat::create(
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plural_rules->locale(),
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{},
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{},
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plural_rules->rounding_options());
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formatter->create_plural_rules(plural_rules->type());
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plural_rules->set_formatter(move(formatter));
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// 13. Return pluralRules.
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return plural_rules;
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}
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// 17.2.2 Intl.PluralRules.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-intl.pluralrules.supportedlocalesof
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JS_DEFINE_NATIVE_FUNCTION(PluralRulesConstructor::supported_locales_of)
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{
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auto locales = vm.argument(0);
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auto options = vm.argument(1);
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// 1. Let availableLocales be %PluralRules%.[[AvailableLocales]].
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// 2. Let requestedLocales be ? CanonicalizeLocaleList(locales).
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auto requested_locales = TRY(canonicalize_locale_list(vm, locales));
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// 3. Return ? FilterLocales(availableLocales, requestedLocales, options).
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return TRY(filter_locales(vm, requested_locales, options));
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}
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}
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