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LibJS: Handle the [[LanguageDisplay]] tag when localizing languages

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Timothy Flynn 2022-01-13 14:05:40 -05:00 • committed by Linus Groh
parent c86f7a675d
commit c7dbe27781
2 changed files with 63 additions and 12 deletions
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14
Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesPrototype.cpp
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@ -6,6 +6,7 @@
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/DisplayNames.h>
#include <LibJS/Runtime/Intl/DisplayNamesPrototype.h>
#include <LibUnicode/Locale.h>
@ -51,11 +52,18 @@ JS_DEFINE_NATIVE_FUNCTION(DisplayNamesPrototype::of)
// 5. Let fields be displayNames.[[Fields]].
// 6. If fields has a field [[<code>]], return fields.[[<code>]].
Optional<StringView> result;
Optional<String> formatted_result;
switch (display_names->type()) {
case DisplayNames::Type::Language:
// FIXME: Handle the [[LanguageDisplay]] internal slot once we know where that data comes from.
result = Unicode::get_locale_language_mapping(display_names->locale(), code.as_string().string());
if (display_names->language_display() == DisplayNames::LanguageDisplay::Dialect) {
result = Unicode::get_locale_language_mapping(display_names->locale(), code.as_string().string());
if (result.has_value())
break;
}
if (auto locale = is_structurally_valid_language_tag(code.as_string().string()); locale.has_value())
formatted_result = Unicode::format_locale_for_display(display_names->locale(), locale.release_value());
break;
case DisplayNames::Type::Region:
result = Unicode::get_locale_territory_mapping(display_names->locale(), code.as_string().string());
@ -102,6 +110,8 @@ JS_DEFINE_NATIVE_FUNCTION(DisplayNamesPrototype::of)
if (result.has_value())
return js_string(vm, result.release_value());
if (formatted_result.has_value())
return js_string(vm, formatted_result.release_value());
// 7. If displayNames.[[Fallback]] is "code", return code.
if (display_names->fallback() == DisplayNames::Fallback::Code)