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LibJS: Implement the ECMA-402 PlainYearMonth.prototype.toLocaleString.js

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Timothy Flynn 2024-11-27 16:27:08 -05:00 • committed by Andreas Kling
parent bca70584b9
commit ac0292b18f
Notes: github-actions[bot] 2024-11-29 08:53:22 +00:00
2 changed files with 15 additions and 8 deletions
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16
Libraries/LibJS/Runtime/Temporal/PlainYearMonthPrototype.cpp
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@ -5,6 +5,8 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Intl/DateTimeFormat.h>
#include <LibJS/Runtime/Intl/DateTimeFormatConstructor.h>
#include <LibJS/Runtime/Temporal/AbstractOperations.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Duration.h>
@ -270,15 +272,23 @@ JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::to_string)
}
// 9.3.20 Temporal.PlainYearMonth.prototype.toLocaleString ( [ locales [ , options ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.tolocalestring
// NOTE: This is the minimum toLocaleString implementation for engines without ECMA-402.
// 15.12.7.1 Temporal.PlainYearMonth.prototype.toLocaleString ( [ locales [ , options ] ] ), https://tc39.es/proposal-temporal/#sup-temporal.plainyearmonth.prototype.tolocalestring
JS_DEFINE_NATIVE_FUNCTION(PlainYearMonthPrototype::to_locale_string)
{
auto& realm = *vm.current_realm();
auto locales = vm.argument(0);
auto options = vm.argument(1);
// 1. Let yearMonth be the this value.
// 2. Perform ? RequireInternalSlot(yearMonth, [[InitializedTemporalYearMonth]]).
auto year_month = TRY(typed_this_object(vm));
// 3. Return TemporalYearMonthToString(yearMonth, AUTO).
return PrimitiveString::create(vm, temporal_year_month_to_string(year_month, ShowCalendar::Auto));
// 3. Let dateFormat be ? CreateDateTimeFormat(%Intl.DateTimeFormat%, locales, options, DATE, DATE).
auto date_format = TRY(Intl::create_date_time_format(vm, realm.intrinsics().intl_date_time_format_constructor(), locales, options, Intl::OptionRequired::Date, Intl::OptionDefaults::Date));
// 4. Return ? FormatDateTime(dateFormat, yearMonth).
return PrimitiveString::create(vm, TRY(Intl::format_date_time(vm, date_format, year_month)));
}
// 9.3.21 Temporal.PlainYearMonth.prototype.toJSON ( ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.tojson

7
Libraries/LibJS/Tests/builtins/Temporal/PlainYearMonth/PlainYearMonth.prototype.toLocaleString.js
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@ -6,11 +6,8 @@ describe("correct behavior", () => {
test("basic functionality", () => {
let plainYearMonth;
plainYearMonth = new Temporal.PlainYearMonth(2021, 7);
expect(plainYearMonth.toLocaleString()).toBe("2021-07");
plainYearMonth = new Temporal.PlainYearMonth(2021, 7, "gregory", 6);
expect(plainYearMonth.toLocaleString()).toBe("2021-07-06[u-ca=gregory]");
plainYearMonth = new Temporal.PlainYearMonth(2021, 7, "gregory");
expect(plainYearMonth.toLocaleString()).toBe("7/2021");
});
});