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LibJS: Implement Intl.DisplayNames.supportedLocalesOf()

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This commit is contained in:
Linus Groh 2021-09-04 17:08:57 +01:00
parent 8f3a5ba5d8
commit 0094259d72
6 changed files with 144 additions and 0 deletions
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23
Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesConstructor.cpp
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@ -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/DisplayNames.h>
@ -28,6 +29,10 @@ void DisplayNamesConstructor::initialize(GlobalObject& global_object)
// 12.3.1 Intl.DisplayNames.prototype, https://tc39.es/ecma402/#sec-Intl.DisplayNames.prototype
define_direct_property(vm.names.prototype, global_object.intl_display_names_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(2), Attribute::Configurable);
}
@ -125,4 +130,22 @@ Value DisplayNamesConstructor::construct(FunctionObject& new_target)
return display_names;
}
// 12.3.2 Intl.DisplayNames.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-Intl.DisplayNames.supportedLocalesOf
JS_DEFINE_NATIVE_FUNCTION(DisplayNamesConstructor::supported_locales_of)
{
auto locales = vm.argument(0);
auto options = vm.argument(1);
// 1. Let availableLocales be %DisplayNames%.[[AvailableLocales]].
// No-op, availability of each requested locale is checked via Unicode::is_locale_available()
// 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);
}
}