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LibJS: Implement Intl.DateTimeFormat.supportedLocalesOf

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Timothy Flynn 2021-11-28 21:16:27 -05:00 • committed by Linus Groh
parent 6ad00088c0
commit d0e1997e07
3 changed files with 66 additions and 0 deletions
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21
Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormatConstructor.cpp
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@ -5,7 +5,9 @@
*/
#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/DateTimeFormat.h>
#include <LibJS/Runtime/Intl/DateTimeFormatConstructor.h>
@ -25,6 +27,10 @@ void DateTimeFormatConstructor::initialize(GlobalObject& global_object)
// 11.3.1 Intl.DateTimeFormat.prototype, https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype
define_direct_property(vm.names.prototype, global_object.intl_date_time_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);
}
@ -58,4 +64,19 @@ ThrowCompletionOr<Object*> DateTimeFormatConstructor::construct(FunctionObject&
return date_time_format;
}
// 11.3.2 Intl.DateTimeFormat.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat.supportedlocalesof
JS_DEFINE_NATIVE_FUNCTION(DateTimeFormatConstructor::supported_locales_of)
{
auto locales = vm.argument(0);
auto options = vm.argument(1);
// 1. Let availableLocales be %DateTimeFormat%.[[AvailableLocales]].
// 2. Let requestedLocales be ? CanonicalizeLocaleList(locales).
auto requested_locales = TRY(canonicalize_locale_list(global_object, locales));
// 3. Return ? SupportedLocales(availableLocales, requestedLocales, options).
return TRY(supported_locales(global_object, requested_locales, options));
}
}