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/*
* Copyright (c) 2021-2022, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/DisplayNames.h>
namespace JS::Intl {
// 12 DisplayNames Objects, https://tc39.es/ecma402/#intl-displaynames-objects
DisplayNames::DisplayNames(Object& prototype)
: Object(prototype)
{
}
void DisplayNames::set_type(StringView type)
{
if (type == "language"sv)
m_type = Type::Language;
else if (type == "region"sv)
m_type = Type::Region;
else if (type == "script"sv)
m_type = Type::Script;
else if (type == "currency"sv)
m_type = Type::Currency;
else if (type == "calendar"sv)
m_type = Type::Calendar;
else if (type == "dateTimeField"sv)
m_type = Type::DateTimeField;
else
VERIFY_NOT_REACHED();
}
StringView DisplayNames::type_string() const
{
switch (m_type) {
case Type::Language:
return "language"sv;
case Type::Region:
return "region"sv;
case Type::Script:
return "script"sv;
case Type::Currency:
return "currency"sv;
case Type::Calendar:
return "calendar"sv;
case Type::DateTimeField:
return "dateTimeField"sv;
default:
VERIFY_NOT_REACHED();
}
}
void DisplayNames::set_fallback(StringView fallback)
{
if (fallback == "none"sv)
m_fallback = Fallback::None;
else if (fallback == "code"sv)
m_fallback = Fallback::Code;
else
VERIFY_NOT_REACHED();
}
StringView DisplayNames::fallback_string() const
{
switch (m_fallback) {
case Fallback::None:
return "none"sv;
case Fallback::Code:
return "code"sv;
default:
VERIFY_NOT_REACHED();
}
}
void DisplayNames::set_language_display(StringView language_display)
{
if (language_display == "dialect"sv)
m_language_display = LanguageDisplay::Dialect;
else if (language_display == "standard"sv)
m_language_display = LanguageDisplay::Standard;
else
VERIFY_NOT_REACHED();
}
StringView DisplayNames::language_display_string() const
{
VERIFY(m_language_display.has_value());
switch (*m_language_display) {
case LanguageDisplay::Dialect:
return "dialect"sv;
case LanguageDisplay::Standard:
return "standard"sv;
default:
VERIFY_NOT_REACHED();
}
}
// 12.5.1 CanonicalCodeForDisplayNames ( type, code ), https://tc39.es/ecma402/#sec-canonicalcodefordisplaynames
ThrowCompletionOr<Value> canonical_code_for_display_names(VM& vm, DisplayNames::Type type, StringView code)
{
// 1. If type is "language", then
if (type == DisplayNames::Type::Language) {
// a. If code does not match the unicode_language_id production, throw a RangeError exception.
if (!::Locale::parse_unicode_language_id(code).has_value())
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "language"sv);
// b. If IsStructurallyValidLanguageTag(code) is false, throw a RangeError exception.
auto locale_id = is_structurally_valid_language_tag(code);
if (!locale_id.has_value())
return vm.throw_completion<RangeError>(ErrorType::IntlInvalidLanguageTag, code);
// c. Return ! CanonicalizeUnicodeLocaleId(code).
auto canonicalized_tag = JS::Intl::canonicalize_unicode_locale_id(*locale_id);
return js_string(vm, move(canonicalized_tag));
}
// 2. If type is "region", then
if (type == DisplayNames::Type::Region) {
// a. If code does not match the unicode_region_subtag production, throw a RangeError exception.
if (!::Locale::is_unicode_region_subtag(code))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "region"sv);
// b. Return the ASCII-uppercase of code.
return js_string(vm, code.to_uppercase_string());
}
// 3. If type is "script", then
if (type == DisplayNames::Type::Script) {
// a. If code does not match the unicode_script_subtag production, throw a RangeError exception.
if (!::Locale::is_unicode_script_subtag(code))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "script"sv);
// Assert: The length of code is 4, and every code unit of code represents an ASCII letter (0x0041 through 0x005A and 0x0061 through 0x007A, both inclusive).
VERIFY(code.length() == 4);
VERIFY(all_of(code, is_ascii_alpha));
// c. Let first be the ASCII-uppercase of the substring of code from 0 to 1.
// d. Let rest be the ASCII-lowercase of the substring of code from 1.
// e. Return the string-concatenation of first and rest.
return js_string(vm, code.to_titlecase_string());
}
// 4. If type is "calendar", then
if (type == DisplayNames::Type::Calendar) {
// a. If code does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
if (!::Locale::is_type_identifier(code))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "calendar"sv);
// b. If code uses any of the backwards compatibility syntax described in Unicode Technical Standard #35 LDML § 3.3 BCP 47 Conformance, throw a RangeError exception.
if (code.contains('_'))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "calendar"sv);
// c. Return the ASCII-lowercase of code.
return js_string(vm, code.to_lowercase_string());
}
// 5. If type is "dateTimeField", then
if (type == DisplayNames::Type::DateTimeField) {
// a. If the result of IsValidDateTimeFieldCode(code) is false, throw a RangeError exception.
if (!is_valid_date_time_field_code(code))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "dateTimeField"sv);
// b. Return code.
return js_string(vm, code);
}
// 6. Assert: type is "currency".
VERIFY(type == DisplayNames::Type::Currency);
// 7. If ! IsWellFormedCurrencyCode(code) is false, throw a RangeError exception.
if (!is_well_formed_currency_code(code))
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, code, "currency"sv);
// 8. Return the ASCII-uppercase of code.
return js_string(vm, code.to_uppercase_string());
}
// 12.5.2 IsValidDateTimeFieldCode ( field ), https://tc39.es/ecma402/#sec-isvaliddatetimefieldcode
bool is_valid_date_time_field_code(StringView field)
{
// 1. If field is listed in the Code column of Table 9, return true.
// 2. Return false.
return field.is_one_of("era"sv, "year"sv, "quarter"sv, "month"sv, "weekOfYear"sv, "weekday"sv, "day"sv, "dayPeriod"sv, "hour"sv, "minute"sv, "second"sv, "timeZoneName"sv);
}
}
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