diff options
Diffstat (limited to 'Userland/Libraries')
3 files changed, 67 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp index 9d0e8c1237..f6159344cb 100644 --- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp +++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.cpp @@ -5,6 +5,7 @@ */ #include <LibJS/Runtime/AbstractOperations.h> +#include <LibJS/Runtime/Array.h> #include <LibJS/Runtime/GlobalObject.h> #include <LibJS/Runtime/Intl/AbstractOperations.h> #include <LibJS/Runtime/Intl/NumberFormat.h> @@ -390,6 +391,10 @@ void NumberFormatConstructor::initialize(GlobalObject& global_object) // 15.3.1 Intl.NumberFormat.prototype, https://tc39.es/ecma402/#sec-intl.numberformat.prototype define_direct_property(vm.names.prototype, global_object.intl_number_format_prototype(), 0); + + u8 attr = Attribute::Writable | Attribute::Configurable; + define_native_function(vm.names.supportedLocalesOf, supported_locales_of, 1, attr); + define_direct_property(vm.names.length, Value(0), Attribute::Configurable); } @@ -427,4 +432,21 @@ Value NumberFormatConstructor::construct(FunctionObject& new_target) return number_format; } +// 15.3.2 Intl.NumberFormat.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-intl.numberformat.supportedlocalesof +JS_DEFINE_NATIVE_FUNCTION(NumberFormatConstructor::supported_locales_of) +{ + auto locales = vm.argument(0); + auto options = vm.argument(1); + + // 1. Let availableLocales be %NumberFormat%.[[AvailableLocales]]. + + // 2. Let requestedLocales be ? CanonicalizeLocaleList(locales). + auto requested_locales = canonicalize_locale_list(global_object, locales); + if (vm.exception()) + return {}; + + // 3. Return ? SupportedLocales(availableLocales, requestedLocales, options). + return supported_locales(global_object, requested_locales, options); +} + } diff --git a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h index c7f57b3ffe..2f140fc81b 100644 --- a/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h +++ b/Userland/Libraries/LibJS/Runtime/Intl/NumberFormatConstructor.h @@ -23,6 +23,8 @@ public: private: virtual bool has_constructor() const override { return true; } + + JS_DECLARE_NATIVE_FUNCTION(supported_locales_of); }; } diff --git a/Userland/Libraries/LibJS/Tests/builtins/Intl/NumberFormat/NumberFormat.supportedLocalesOf.js b/Userland/Libraries/LibJS/Tests/builtins/Intl/NumberFormat/NumberFormat.supportedLocalesOf.js new file mode 100644 index 0000000000..0272bc333c --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/Intl/NumberFormat/NumberFormat.supportedLocalesOf.js @@ -0,0 +1,43 @@ +describe("correct behavior", () => { + test("length is 1", () => { + expect(Intl.NumberFormat.supportedLocalesOf).toHaveLength(1); + }); + + test("basic functionality", () => { + // prettier-ignore + const values = [ + [[], []], + [undefined, []], + ["en", ["en"]], + [new Intl.Locale("en"), ["en"]], + [["en"], ["en"]], + [["en", "en-gb", "en-us"], ["en", "en-GB", "en-US"]], + [["en", "de", "fr"], ["en", "de", "fr"]], + [["en-foobar"], ["en-foobar"]], + [["en-foobar-u-abc"], ["en-foobar-u-abc"]], + [["aa", "zz"], []], + [["en", "aa", "zz"], ["en"]], + ]; + for (const [input, expected] of values) { + expect(Intl.NumberFormat.supportedLocalesOf(input)).toEqual(expected); + // "best fit" (implementation defined) just uses the same implementation as "lookup" at the moment + expect( + Intl.NumberFormat.supportedLocalesOf(input, { localeMatcher: "best fit" }) + ).toEqual(Intl.NumberFormat.supportedLocalesOf(input, { localeMatcher: "lookup" })); + } + }); +}); + +describe("errors", () => { + test("invalid value for localeMatcher option", () => { + expect(() => { + Intl.NumberFormat.supportedLocalesOf([], { localeMatcher: "foo" }); + }).toThrowWithMessage(RangeError, "foo is not a valid value for option localeMatcher"); + }); + + test("invalid language tag", () => { + expect(() => { + Intl.NumberFormat.supportedLocalesOf(["aaaaaaaaa"]); + }).toThrowWithMessage(RangeError, "aaaaaaaaa is not a structurally valid language tag"); + }); +}); |