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LibJS: Implement Intl.Locale.prototype.textInfo property
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@ -139,6 +139,7 @@ namespace JS {
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P(deleteProperty) \
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P(deref) \
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P(description) \
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P(direction) \
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P(disambiguation) \
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P(done) \
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P(dotAll) \
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@ -469,6 +470,7 @@ namespace JS {
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P(tan) \
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P(tanh) \
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P(test) \
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P(textInfo) \
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P(then) \
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P(time) \
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P(timeEnd) \
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@ -167,4 +167,23 @@ Array* time_zones_of_locale(GlobalObject& global_object, StringView region)
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});
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}
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// 1.1.7 CharacterDirectionOfLocale ( loc ), https://tc39.es/proposal-intl-locale-info/#sec-character-direction-of-locale
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StringView character_direction_of_locale(Locale const& locale_object)
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{
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// 1. Let locale be loc.[[Locale]].
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auto const& locale = locale_object.locale();
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// 2. Assert: locale matches the unicode_locale_id production.
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VERIFY(Unicode::parse_unicode_locale_id(locale).has_value());
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// 3. If the default general ordering of characters (characterOrder) within a line in locale is right-to-left, return "rtl".
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// NOTE: LibUnicode handles both LTR and RTL character orders in this call, not just RTL. We then fallback to LTR
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// below if LibUnicode doesn't conclusively know the character order for this locale.
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if (auto character_order = Unicode::character_order_for_locale(locale); character_order.has_value())
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return Unicode::character_order_to_string(*character_order);
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// 4. Return "ltr".
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return "ltr"sv;
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}
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}
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@ -79,5 +79,6 @@ Array* collations_of_locale(GlobalObject& global_object, Locale const& locale);
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Array* hour_cycles_of_locale(GlobalObject& global_object, Locale const& locale);
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Array* numbering_systems_of_locale(GlobalObject& global_object, Locale const& locale);
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Array* time_zones_of_locale(GlobalObject& global_object, StringView region);
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StringView character_direction_of_locale(Locale const& locale);
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}
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@ -48,6 +48,7 @@ void LocalePrototype::initialize(GlobalObject& global_object)
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define_native_accessor(vm.names.script, script, {}, Attribute::Configurable);
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define_native_accessor(vm.names.region, region, {}, Attribute::Configurable);
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define_native_accessor(vm.names.timeZones, time_zones, {}, Attribute::Configurable);
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define_native_accessor(vm.names.textInfo, text_info, {}, Attribute::Configurable);
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}
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// 14.3.3 Intl.Locale.prototype.maximize ( ), https://tc39.es/ecma402/#sec-Intl.Locale.prototype.maximize
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@ -242,4 +243,24 @@ JS_DEFINE_NATIVE_FUNCTION(LocalePrototype::time_zones)
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return time_zones_of_locale(global_object, locale->language_id.region.value());
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}
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// 1.4.21 get Intl.Locale.prototype.textInfo, https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.textInfo
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JS_DEFINE_NATIVE_FUNCTION(LocalePrototype::text_info)
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{
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// 1. Let loc be the this value.
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// 2. Perform ? RequireInternalSlot(loc, [[InitializedLocale]]).
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auto* locale_object = TRY(typed_this_object(global_object));
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// 3. Let info be ! ObjectCreate(%Object.prototype%).
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auto* info = Object::create(global_object, global_object.object_prototype());
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// 4. Let dir be ! CharacterDirectionOfLocale(loc).
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auto direction = character_direction_of_locale(*locale_object);
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// 5. Perform ! CreateDataPropertyOrThrow(info, "direction", dir).
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MUST(info->create_data_property_or_throw(vm.names.direction, js_string(vm, direction)));
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// 6. Return info.
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return info;
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}
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}
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@ -39,6 +39,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(script);
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JS_DECLARE_NATIVE_FUNCTION(region);
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JS_DECLARE_NATIVE_FUNCTION(time_zones);
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JS_DECLARE_NATIVE_FUNCTION(text_info);
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};
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}
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@ -0,0 +1,26 @@
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describe("errors", () => {
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test("called on non-Locale object", () => {
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expect(() => {
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Intl.Locale.prototype.textInfo;
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}).toThrowWithMessage(TypeError, "Not an object of type Intl.Locale");
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});
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});
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describe("normal behavior", () => {
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test("basic functionality", () => {
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const textInfo = new Intl.Locale("en").textInfo;
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expect(textInfo).toBeDefined();
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expect(Object.getPrototypeOf(textInfo)).toBe(Object.prototype);
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expect(textInfo.direction).toBeDefined();
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expect(Object.getPrototypeOf(textInfo.direction)).toBe(String.prototype);
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expect(textInfo.direction).toBe("ltr");
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expect(new Intl.Locale("ar").textInfo.direction).toBe("rtl");
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});
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test("fallback to ltr", () => {
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expect(new Intl.Locale("xx").textInfo.direction).toBe("ltr");
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});
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});
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