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85 lines
3 KiB
C++
85 lines
3 KiB
C++
/*
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* Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.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/GlobalObject.h>
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#include <LibJS/Runtime/Intl/PluralRules.h>
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namespace JS::Intl {
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// 16 PluralRules Objects, https://tc39.es/ecma402/#pluralrules-objects
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PluralRules::PluralRules(Object& prototype)
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: NumberFormatBase(prototype)
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{
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}
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void PluralRules::set_type(StringView type)
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{
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if (type == "cardinal"sv) {
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m_type = Type::Cardinal;
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} else if (type == "ordinal"sv) {
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m_type = Type::Ordinal;
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} else {
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VERIFY_NOT_REACHED();
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}
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}
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StringView PluralRules::type_string() const
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{
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switch (m_type) {
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case Type::Cardinal:
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return "cardinal"sv;
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case Type::Ordinal:
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return "ordinal"sv;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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// 16.1.1 InitializePluralRules ( pluralRules, locales, options ), https://tc39.es/ecma402/#sec-initializepluralrules
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ThrowCompletionOr<PluralRules*> initialize_plural_rules(GlobalObject& global_object, PluralRules& plural_rules, Value locales_value, Value options_value)
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{
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auto& vm = global_object.vm();
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// 1. Let requestedLocales be ? CanonicalizeLocaleList(locales).
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auto requested_locales = TRY(canonicalize_locale_list(global_object, locales_value));
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// 2. Set options to ? CoerceOptionsToObject(options).
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auto* options = TRY(coerce_options_to_object(global_object, options_value));
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// 3. Let opt be a new Record.
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LocaleOptions opt {};
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// 4. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
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auto matcher = TRY(get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, AK::Array { "lookup"sv, "best fit"sv }, "best fit"sv));
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// 5. Set opt.[[localeMatcher]] to matcher.
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opt.locale_matcher = matcher;
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// 6. Let t be ? GetOption(options, "type", "string", « "cardinal", "ordinal" », "cardinal").
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auto type = TRY(get_option(global_object, *options, vm.names.type, Value::Type::String, AK::Array { "cardinal"sv, "ordinal"sv }, "cardinal"sv));
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// 7. Set pluralRules.[[Type]] to t.
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plural_rules.set_type(type.as_string().string());
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// 8. Perform ? SetNumberFormatDigitOptions(pluralRules, options, +0𝔽, 3𝔽, "standard").
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TRY(set_number_format_digit_options(global_object, plural_rules, *options, 0, 3, NumberFormat::Notation::Standard));
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// 9. Let localeData be %PluralRules%.[[LocaleData]].
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// 10. Let r be ResolveLocale(%PluralRules%.[[AvailableLocales]], requestedLocales, opt, %PluralRules%.[[RelevantExtensionKeys]], localeData).
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auto result = resolve_locale(requested_locales, opt, {});
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// 11. Set pluralRules.[[Locale]] to r.[[locale]].
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plural_rules.set_locale(move(result.locale));
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// Non-standard, the data locale is used by our NumberFormat implementation.
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plural_rules.set_data_locale(move(result.data_locale));
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// 12. Return pluralRules.
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return &plural_rules;
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}
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}
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