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LibJS: Implement Intl.Locale.prototype.baseName
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4 changed files with 44 additions and 0 deletions
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@ -71,6 +71,7 @@ namespace JS {
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P(atan) \
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P(atan2) \
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P(atanh) \
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P(baseName) \
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P(big) \
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P(bind) \
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P(blank) \
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@ -8,6 +8,7 @@
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Intl/Locale.h>
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#include <LibJS/Runtime/Intl/LocalePrototype.h>
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#include <LibUnicode/Locale.h>
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namespace JS::Intl {
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@ -44,6 +45,8 @@ void LocalePrototype::initialize(GlobalObject& global_object)
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// 14.3.2 Intl.Locale.prototype[ @@toStringTag ], https://tc39.es/ecma402/#sec-Intl.Locale.prototype-@@tostringtag
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define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm, "Intl.Locale"), Attribute::Configurable);
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define_native_accessor(vm.names.baseName, base_name, {}, Attribute::Configurable);
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}
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// 14.3.5 Intl.Locale.prototype.toString ( ), https://tc39.es/ecma402/#sec-Intl.Locale.prototype.toString
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@ -59,4 +62,21 @@ JS_DEFINE_NATIVE_FUNCTION(LocalePrototype::to_string)
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return js_string(vm, locale_object->locale());
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}
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// 14.3.6 get Intl.Locale.prototype.baseName, https://tc39.es/ecma402/#sec-Intl.Locale.prototype.baseName
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JS_DEFINE_NATIVE_GETTER(LocalePrototype::base_name)
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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 = typed_this(global_object);
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if (!locale_object)
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return {};
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// 3. Let locale be loc.[[Locale]].
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auto locale = Unicode::parse_unicode_locale_id(locale_object->locale());
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VERIFY(locale.has_value());
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// 4. Return the substring of locale corresponding to the unicode_language_id production.
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return js_string(vm, locale->language_id.to_string());
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}
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}
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@ -20,6 +20,8 @@ public:
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private:
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JS_DECLARE_NATIVE_FUNCTION(to_string);
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JS_DECLARE_NATIVE_GETTER(base_name);
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};
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}
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@ -0,0 +1,21 @@
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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.baseName;
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}).toThrowWithMessage(TypeError, "Not a Intl.Locale object");
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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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expect(new Intl.Locale("en").baseName).toBe("en");
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expect(new Intl.Locale("en-Latn").baseName).toBe("en-Latn");
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expect(new Intl.Locale("en-GB").baseName).toBe("en-GB");
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expect(new Intl.Locale("en", { script: "Latn" }).baseName).toBe("en-Latn");
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expect(new Intl.Locale("en", { region: "GB" }).baseName).toBe("en-GB");
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expect(new Intl.Locale("en-u-ca-abc").baseName).toBe("en");
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expect(new Intl.Locale("en", { calendar: "abc" }).baseName).toBe("en");
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expect(new Intl.Locale("en-x-abcd").baseName).toBe("en");
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});
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});
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