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LibJS: Implement the Intl.Locale constructor

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Timothy Flynn 2021-09-01 22:08:15 -04:00 • committed by Linus Groh
parent 990dd037d2
commit 17639a42ae
5 changed files with 564 additions and 2 deletions
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28
Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
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@ -17,7 +17,7 @@
namespace JS::Intl {
// 6.2.2 IsStructurallyValidLanguageTag ( locale ), https://tc39.es/ecma402/#sec-isstructurallyvalidlanguagetag
static Optional<Unicode::LocaleID> is_structurally_valid_language_tag(StringView locale)
Optional<Unicode::LocaleID> is_structurally_valid_language_tag(StringView locale)
{
auto contains_duplicate_variant = [](auto& variants) {
if (variants.is_empty())
@ -77,7 +77,7 @@ static Optional<Unicode::LocaleID> is_structurally_valid_language_tag(StringView
}
// 6.2.3 CanonicalizeUnicodeLocaleId ( locale ), https://tc39.es/ecma402/#sec-canonicalizeunicodelocaleid
static String canonicalize_unicode_locale_id(Unicode::LocaleID& locale)
String canonicalize_unicode_locale_id(Unicode::LocaleID& locale)
{
// Note: This implementation differs from the spec in how Step 3 is implemented. The spec assumes
// the input to this method is a string, and is written such that operations are performed on parts
@ -309,6 +309,17 @@ static MatcherResult best_fit_matcher(Vector<String> const& requested_locales)
return lookup_matcher(requested_locales);
}
// 9.2.6 InsertUnicodeExtensionAndCanonicalize ( locale, extension ), https://tc39.es/ecma402/#sec-insert-unicode-extension-and-canonicalize
String insert_unicode_extension_and_canonicalize(Unicode::LocaleID locale, Unicode::LocaleExtension extension)
{
// Note: This implementation differs from the spec in how the extension is inserted. The spec assumes
// the input to this method is a string, and is written such that operations are performed on parts
// of that string. LibUnicode gives us the parsed locale in a structure, so we can mutate that
// structure directly.
locale.extensions.append(move(extension));
return JS::Intl::canonicalize_unicode_locale_id(locale);
}
// 9.2.7 ResolveLocale ( availableLocales, requestedLocales, options, relevantExtensionKeys, localeData ), https://tc39.es/ecma402/#sec-resolvelocale
LocaleResult resolve_locale(Vector<String> const& requested_locales, LocaleOptions const& options, [[maybe_unused]] Vector<StringView> relevant_extension_keys)
{
@ -385,6 +396,19 @@ LocaleResult resolve_locale(Vector<String> const& requested_locales, LocaleOptio
return result;
}
// 9.2.12 CoerceOptionsToObject ( options ), https://tc39.es/ecma402/#sec-coerceoptionstoobject
Object* coerce_options_to_object(GlobalObject& global_object, Value options)
{
// 1. If options is undefined, then
if (options.is_undefined()) {
// a. Return ! OrdinaryObjectCreate(null).
return Object::create(global_object, nullptr);
}
// 2. Return ? ToObject(options).
return options.to_object(global_object);
}
// 9.2.13 GetOption ( options, property, type, values, fallback ), https://tc39.es/ecma402/#sec-getoption
Value get_option(GlobalObject& global_object, Value options, PropertyName const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback)
{