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4fc0fba646
This required updating some LibJS spec steps to their latest versions, as the data expected by the old steps does not quite match the APIs that are available with the ICU. The new spec steps are much more aligned.
477 lines
22 KiB
C++
477 lines
22 KiB
C++
/*
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* Copyright (c) 2021-2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/Date.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Intl/AbstractOperations.h>
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#include <LibJS/Runtime/Intl/DateTimeFormat.h>
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#include <LibJS/Runtime/Intl/DateTimeFormatConstructor.h>
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#include <LibJS/Runtime/Temporal/TimeZone.h>
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#include <LibUnicode/DateTimeFormat.h>
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#include <LibUnicode/Locale.h>
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namespace JS::Intl {
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JS_DEFINE_ALLOCATOR(DateTimeFormatConstructor);
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// 11.1 The Intl.DateTimeFormat Constructor, https://tc39.es/ecma402/#sec-intl-datetimeformat-constructor
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DateTimeFormatConstructor::DateTimeFormatConstructor(Realm& realm)
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: NativeFunction(realm.vm().names.DateTimeFormat.as_string(), realm.intrinsics().function_prototype())
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{
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}
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void DateTimeFormatConstructor::initialize(Realm& realm)
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{
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Base::initialize(realm);
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auto& vm = this->vm();
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// 11.2.1 Intl.DateTimeFormat.prototype, https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().intl_date_time_format_prototype(), 0);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(realm, vm.names.supportedLocalesOf, supported_locales_of, 1, attr);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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// 11.1.1 Intl.DateTimeFormat ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat
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ThrowCompletionOr<Value> DateTimeFormatConstructor::call()
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{
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// 1. If NewTarget is undefined, let newTarget be the active function object, else let newTarget be NewTarget.
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return TRY(construct(*this));
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}
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// 11.1.1 Intl.DateTimeFormat ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat
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ThrowCompletionOr<NonnullGCPtr<Object>> DateTimeFormatConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto locales = vm.argument(0);
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auto options = vm.argument(1);
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// 2. Let dateTimeFormat be ? CreateDateTimeFormat(newTarget, locales, options, any, date).
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auto date_time_format = TRY(create_date_time_format(vm, new_target, locales, options, OptionRequired::Any, OptionDefaults::Date));
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// 3. If the implementation supports the normative optional constructor mode of 4.3 Note 1, then
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// a. Let this be the this value.
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// b. Return ? ChainDateTimeFormat(dateTimeFormat, NewTarget, this).
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// 4. Return dateTimeFormat.
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return date_time_format;
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}
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// 11.2.2 Intl.DateTimeFormat.supportedLocalesOf ( locales [ , options ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat.supportedlocalesof
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JS_DEFINE_NATIVE_FUNCTION(DateTimeFormatConstructor::supported_locales_of)
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{
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auto locales = vm.argument(0);
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auto options = vm.argument(1);
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// 1. Let availableLocales be %DateTimeFormat%.[[AvailableLocales]].
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// 2. Let requestedLocales be ? CanonicalizeLocaleList(locales).
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auto requested_locales = TRY(canonicalize_locale_list(vm, locales));
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// 3. Return ? FilterLocales(availableLocales, requestedLocales, options).
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return TRY(filter_locales(vm, requested_locales, options));
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}
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// 11.1.2 CreateDateTimeFormat ( newTarget, locales, options, required, defaults ), https://tc39.es/ecma402/#sec-createdatetimeformat
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ThrowCompletionOr<NonnullGCPtr<DateTimeFormat>> create_date_time_format(VM& vm, FunctionObject& new_target, Value locales_value, Value options_value, OptionRequired required, OptionDefaults defaults)
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{
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// 1. Let dateTimeFormat be ? OrdinaryCreateFromConstructor(newTarget, "%DateTimeFormat.prototype%", « [[InitializedDateTimeFormat]], [[Locale]], [[Calendar]], [[NumberingSystem]], [[TimeZone]], [[Weekday]], [[Era]], [[Year]], [[Month]], [[Day]], [[DayPeriod]], [[Hour]], [[Minute]], [[Second]], [[FractionalSecondDigits]], [[TimeZoneName]], [[HourCycle]], [[DateStyle]], [[TimeStyle]], [[Pattern]], [[RangePatterns]], [[BoundFormat]] »).
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auto date_time_format = TRY(ordinary_create_from_constructor<DateTimeFormat>(vm, new_target, &Intrinsics::intl_date_time_format_prototype));
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// 2. Let requestedLocales be ? CanonicalizeLocaleList(locales).
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auto requested_locales = TRY(canonicalize_locale_list(vm, locales_value));
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// 3. Set options to ? CoerceOptionsToObject(options).
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auto* options = TRY(coerce_options_to_object(vm, options_value));
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// 4. Let opt be a new Record.
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LocaleOptions opt {};
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// 5. Let matcher be ? GetOption(options, "localeMatcher", string, « "lookup", "best fit" », "best fit").
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auto matcher = TRY(get_option(vm, *options, vm.names.localeMatcher, OptionType::String, AK::Array { "lookup"sv, "best fit"sv }, "best fit"sv));
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// 6. Set opt.[[localeMatcher]] to matcher.
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opt.locale_matcher = matcher;
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// 7. Let calendar be ? GetOption(options, "calendar", string, empty, undefined).
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auto calendar = TRY(get_option(vm, *options, vm.names.calendar, OptionType::String, {}, Empty {}));
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// 8. If calendar is not undefined, then
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if (!calendar.is_undefined()) {
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// a. If calendar cannot be matched by the type Unicode locale nonterminal, throw a RangeError exception.
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if (!Unicode::is_type_identifier(calendar.as_string().utf8_string_view()))
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, calendar, "calendar"sv);
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}
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// 9. Set opt.[[ca]] to calendar.
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opt.ca = locale_key_from_value(calendar);
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// 10. Let numberingSystem be ? GetOption(options, "numberingSystem", string, empty, undefined).
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auto numbering_system = TRY(get_option(vm, *options, vm.names.numberingSystem, OptionType::String, {}, Empty {}));
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// 11. If numberingSystem is not undefined, then
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if (!numbering_system.is_undefined()) {
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// a. If numberingSystem cannot be matched by the type Unicode locale nonterminal, throw a RangeError exception.
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if (!Unicode::is_type_identifier(numbering_system.as_string().utf8_string_view()))
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, numbering_system, "numberingSystem"sv);
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}
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// 12. Set opt.[[nu]] to numberingSystem.
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opt.nu = locale_key_from_value(numbering_system);
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// 13. Let hour12 be ? GetOption(options, "hour12", boolean, empty, undefined).
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auto hour12 = TRY(get_option(vm, *options, vm.names.hour12, OptionType::Boolean, {}, Empty {}));
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// 14. Let hourCycle be ? GetOption(options, "hourCycle", string, « "h11", "h12", "h23", "h24" », undefined).
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auto hour_cycle = TRY(get_option(vm, *options, vm.names.hourCycle, OptionType::String, AK::Array { "h11"sv, "h12"sv, "h23"sv, "h24"sv }, Empty {}));
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// 15. If hour12 is not undefined, then
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if (!hour12.is_undefined()) {
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// a. Set hourCycle to null.
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hour_cycle = js_null();
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}
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// 16. Set opt.[[hc]] to hourCycle.
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opt.hc = locale_key_from_value(hour_cycle);
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// 17. Let localeData be %DateTimeFormat%.[[LocaleData]].
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// 18. Let r be ResolveLocale(%DateTimeFormat%.[[AvailableLocales]], requestedLocales, opt, %DateTimeFormat%.[[RelevantExtensionKeys]], localeData).
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auto result = resolve_locale(requested_locales, opt, DateTimeFormat::relevant_extension_keys());
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// 19. Set dateTimeFormat.[[Locale]] to r.[[locale]].
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date_time_format->set_locale(move(result.locale));
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// 20. Let resolvedCalendar be r.[[ca]].
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// 21. Set dateTimeFormat.[[Calendar]] to resolvedCalendar.
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if (auto* resolved_calendar = result.ca.get_pointer<String>())
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date_time_format->set_calendar(move(*resolved_calendar));
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// 22. Set dateTimeFormat.[[NumberingSystem]] to r.[[nu]].
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if (auto* resolved_numbering_system = result.nu.get_pointer<String>())
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date_time_format->set_numbering_system(move(*resolved_numbering_system));
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// 23. Let dataLocale be r.[[dataLocale]].
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// 24. Let dataLocaleData be localeData.[[<dataLocale>]].
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Optional<Unicode::HourCycle> hour_cycle_value;
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Optional<bool> hour12_value;
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// 25. If hour12 is true, then
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// a. Let hc be dataLocaleData.[[hourCycle12]].
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// 26. Else if hour12 is false, then
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// a. Let hc be dataLocaleData.[[hourCycle24]].
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if (hour12.is_boolean()) {
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// NOTE: We let LibUnicode figure out the appropriate hour cycle.
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hour12_value = hour12.as_bool();
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}
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// 27. Else,
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else {
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// a. Assert: hour12 is undefined.
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VERIFY(hour12.is_undefined());
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// b. Let hc be r.[[hc]].
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if (auto* resolved_hour_cycle = result.hc.get_pointer<String>())
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hour_cycle_value = Unicode::hour_cycle_from_string(*resolved_hour_cycle);
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// c. If hc is null, set hc to dataLocaleData.[[hourCycle]].
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if (!hour_cycle_value.has_value())
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hour_cycle_value = Unicode::default_hour_cycle(date_time_format->locale());
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}
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// 28. Set dateTimeFormat.[[HourCycle]] to hc.
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date_time_format->hour_cycle = hour_cycle_value;
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// 29. Let timeZone be ? Get(options, "timeZone").
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auto time_zone_value = TRY(options->get(vm.names.timeZone));
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String time_zone;
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// 30. If timeZone is undefined, then
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if (time_zone_value.is_undefined()) {
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// a. Set timeZone to DefaultTimeZone().
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time_zone = system_time_zone_identifier();
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}
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// 31. Else,
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else {
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// a. Set timeZone to ? ToString(timeZone).
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time_zone = TRY(time_zone_value.to_string(vm));
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}
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// 32. If IsTimeZoneOffsetString(timeZone) is true, then
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bool is_time_zone_offset_string = JS::is_time_zone_offset_string(time_zone);
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if (is_time_zone_offset_string) {
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// a. Let parseResult be ParseText(StringToCodePoints(timeZone), UTCOffset).
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auto parse_result = Temporal::parse_iso8601(Temporal::Production::TimeZoneNumericUTCOffset, time_zone);
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// b. Assert: parseResult is a Parse Node.
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VERIFY(parse_result.has_value());
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// c. If parseResult contains more than one MinuteSecond Parse Node, throw a RangeError exception.
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if (parse_result->time_zone_utc_offset_second.has_value())
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, time_zone, vm.names.timeZone);
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// d. Let offsetNanoseconds be ParseTimeZoneOffsetString(timeZone).
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auto offset_nanoseconds = parse_time_zone_offset_string(time_zone);
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// e. Let offsetMinutes be offsetNanoseconds / (6 × 10^10).
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auto offset_minutes = offset_nanoseconds / 60'000'000'000;
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// f. Assert: offsetMinutes is an integer.
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VERIFY(trunc(offset_minutes) == offset_minutes);
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// g. Set timeZone to FormatOffsetTimeZoneIdentifier(offsetMinutes).
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time_zone = format_offset_time_zone_identifier(offset_minutes);
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}
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// 33. Else
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else {
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// a. Let timeZoneIdentifierRecord be GetAvailableNamedTimeZoneIdentifier(timeZone).
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auto time_zone_identifier_record = get_available_named_time_zone_identifier(time_zone);
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// b. If timeZoneIdentifierRecord is EMPTY, throw a RangeError exception.
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if (!time_zone_identifier_record.has_value())
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, time_zone, vm.names.timeZone);
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// c. Set timeZone to timeZoneIdentifierRecord.[[PrimaryIdentifier]].
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time_zone = time_zone_identifier_record->primary_identifier;
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}
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// 35. Set dateTimeFormat.[[TimeZone]] to timeZone.
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date_time_format->set_time_zone(time_zone);
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// NOTE: ICU requires time zone offset strings to be of the form "GMT+00:00"
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if (is_time_zone_offset_string)
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time_zone = MUST(String::formatted("GMT{}", time_zone));
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// 36. Let formatOptions be a new Record.
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Unicode::CalendarPattern format_options {};
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// 37. Set formatOptions.[[hourCycle]] to hc.
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format_options.hour_cycle = hour_cycle_value;
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format_options.hour12 = hour12_value;
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// 38. Let hasExplicitFormatComponents be false.
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// NOTE: Instead of using a boolean, we track any explicitly provided component name for nicer exception messages.
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PropertyKey const* explicit_format_component = nullptr;
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// 39. For each row of Table 6, except the header row, in table order, do
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TRY(for_each_calendar_field(vm, format_options, [&](auto& option, PropertyKey const& property, auto const& values) -> ThrowCompletionOr<void> {
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using ValueType = typename RemoveReference<decltype(option)>::ValueType;
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// a. Let prop be the name given in the Property column of the row.
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// b. If prop is "fractionalSecondDigits", then
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if constexpr (IsIntegral<ValueType>) {
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// i. Let value be ? GetNumberOption(options, "fractionalSecondDigits", 1, 3, undefined).
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auto value = TRY(get_number_option(vm, *options, property, 1, 3, {}));
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// d. Set formatOptions.[[<prop>]] to value.
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if (value.has_value()) {
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option = static_cast<ValueType>(value.value());
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// e. If value is not undefined, then
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// i. Set hasExplicitFormatComponents to true.
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explicit_format_component = &property;
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}
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}
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// c. Else,
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else {
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// i. Let values be a List whose elements are the strings given in the Values column of the row.
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// ii. Let value be ? GetOption(options, prop, string, values, undefined).
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auto value = TRY(get_option(vm, *options, property, OptionType::String, values, Empty {}));
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// d. Set formatOptions.[[<prop>]] to value.
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if (!value.is_undefined()) {
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option = Unicode::calendar_pattern_style_from_string(value.as_string().utf8_string_view());
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// e. If value is not undefined, then
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// i. Set hasExplicitFormatComponents to true.
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explicit_format_component = &property;
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}
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}
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return {};
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}));
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// 40. Let matcher be ? GetOption(options, "formatMatcher", string, « "basic", "best fit" », "best fit").
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matcher = TRY(get_option(vm, *options, vm.names.formatMatcher, OptionType::String, AK::Array { "basic"sv, "best fit"sv }, "best fit"sv));
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// 41. Let dateStyle be ? GetOption(options, "dateStyle", string, « "full", "long", "medium", "short" », undefined).
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auto date_style = TRY(get_option(vm, *options, vm.names.dateStyle, OptionType::String, AK::Array { "full"sv, "long"sv, "medium"sv, "short"sv }, Empty {}));
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// 42. Set dateTimeFormat.[[DateStyle]] to dateStyle.
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if (!date_style.is_undefined())
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date_time_format->set_date_style(date_style.as_string().utf8_string_view());
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// 43. Let timeStyle be ? GetOption(options, "timeStyle", string, « "full", "long", "medium", "short" », undefined).
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auto time_style = TRY(get_option(vm, *options, vm.names.timeStyle, OptionType::String, AK::Array { "full"sv, "long"sv, "medium"sv, "short"sv }, Empty {}));
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// 44. Set dateTimeFormat.[[TimeStyle]] to timeStyle.
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if (!time_style.is_undefined())
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date_time_format->set_time_style(time_style.as_string().utf8_string_view());
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// 45. If dateStyle is not undefined or timeStyle is not undefined, then
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if (date_time_format->has_date_style() || date_time_format->has_time_style()) {
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// a. If hasExplicitFormatComponents is true, then
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if (explicit_format_component != nullptr) {
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// i. Throw a TypeError exception.
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return vm.throw_completion<TypeError>(ErrorType::IntlInvalidDateTimeFormatOption, *explicit_format_component, "dateStyle or timeStyle"sv);
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}
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// b. If required is date and timeStyle is not undefined, then
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if (required == OptionRequired::Date && !time_style.is_undefined()) {
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// i. Throw a TypeError exception.
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return vm.throw_completion<TypeError>(ErrorType::IntlInvalidDateTimeFormatOption, "timeStyle"sv, "date"sv);
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}
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// c. If required is time and dateStyle is not undefined, then
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if (required == OptionRequired::Time && !date_style.is_undefined()) {
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// i. Throw a TypeError exception.
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return vm.throw_completion<TypeError>(ErrorType::IntlInvalidDateTimeFormatOption, "dateStyle"sv, "time"sv);
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}
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// d. Let styles be dataLocaleData.[[styles]].[[<resolvedCalendar>]].
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// e. Let bestFormat be DateTimeStyleFormat(dateStyle, timeStyle, styles).
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auto formatter = Unicode::DateTimeFormat::create_for_date_and_time_style(
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date_time_format->locale(),
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time_zone,
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format_options.hour_cycle,
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format_options.hour12,
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date_time_format->date_style(),
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date_time_format->time_style());
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date_time_format->set_formatter(move(formatter));
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}
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// 46. Else,
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else {
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// a. Let needDefaults be true.
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bool needs_defaults = true;
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// b. If required is date or any, then
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if (required == OptionRequired::Date || required == OptionRequired::Any) {
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// i. For each property name prop of « "weekday", "year", "month", "day" », do
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auto check_property_value = [&](auto const& value) {
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// 1. Let value be formatOptions.[[<prop>]].
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// 2. If value is not undefined, let needDefaults be false.
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if (value.has_value())
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needs_defaults = false;
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};
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check_property_value(format_options.weekday);
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check_property_value(format_options.year);
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check_property_value(format_options.month);
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check_property_value(format_options.day);
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}
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// c. If required is time or any, then
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if (required == OptionRequired::Time || required == OptionRequired::Any) {
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// i. For each property name prop of « "dayPeriod", "hour", "minute", "second", "fractionalSecondDigits" », do
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auto check_property_value = [&](auto const& value) {
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// 1. Let value be formatOptions.[[<prop>]].
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// 2. If value is not undefined, let needDefaults be false.
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if (value.has_value())
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needs_defaults = false;
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};
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check_property_value(format_options.day_period);
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check_property_value(format_options.hour);
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check_property_value(format_options.minute);
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check_property_value(format_options.second);
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check_property_value(format_options.fractional_second_digits);
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}
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// d. If needDefaults is true and defaults is either date or all, then
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if (needs_defaults && (defaults == OptionDefaults::Date || defaults == OptionDefaults::All)) {
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// i. For each property name prop of « "year", "month", "day" », do
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auto set_property_value = [&](auto& value) {
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// 1. Set formatOptions.[[<prop>]] to "numeric".
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value = Unicode::CalendarPatternStyle::Numeric;
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};
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set_property_value(format_options.year);
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set_property_value(format_options.month);
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set_property_value(format_options.day);
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}
|
||
|
||
// e. If needDefaults is true and defaults is either time or all, then
|
||
if (needs_defaults && (defaults == OptionDefaults::Time || defaults == OptionDefaults::All)) {
|
||
// i. For each property name prop of « "hour", "minute", "second" », do
|
||
auto set_property_value = [&](auto& value) {
|
||
// 1. Set formatOptions.[[<prop>]] to "numeric".
|
||
value = Unicode::CalendarPatternStyle::Numeric;
|
||
};
|
||
|
||
set_property_value(format_options.hour);
|
||
set_property_value(format_options.minute);
|
||
set_property_value(format_options.second);
|
||
}
|
||
|
||
// f. Let formats be dataLocaleData.[[formats]].[[<resolvedCalendar>]].
|
||
// g. If matcher is "basic", then
|
||
// i. Let bestFormat be BasicFormatMatcher(formatOptions, formats).
|
||
// h. Else,
|
||
// i. Let bestFormat be BestFitFormatMatcher(formatOptions, formats).
|
||
auto formatter = Unicode::DateTimeFormat::create_for_pattern_options(
|
||
date_time_format->locale(),
|
||
time_zone,
|
||
format_options);
|
||
date_time_format->set_formatter(move(formatter));
|
||
}
|
||
|
||
// 47. For each row in Table 6, except the header row, in table order, do
|
||
date_time_format->for_each_calendar_field_zipped_with(date_time_format->formatter().chosen_pattern(), [&](auto& date_time_format_field, auto const& best_format_field) {
|
||
// a. Let prop be the name given in the Property column of the row.
|
||
// b. If bestFormat has a field [[<prop>]], then
|
||
if (best_format_field.has_value()) {
|
||
// i. Let p be bestFormat.[[<prop>]].
|
||
// ii. Set dateTimeFormat's internal slot whose name is the Internal Slot column of the row to p.
|
||
date_time_format_field = best_format_field;
|
||
}
|
||
});
|
||
|
||
// 48. If dateTimeFormat.[[Hour]] is undefined, then
|
||
if (!date_time_format->hour.has_value()) {
|
||
// a. Set dateTimeFormat.[[HourCycle]] to undefined.
|
||
date_time_format->hour_cycle.clear();
|
||
}
|
||
|
||
// 49. If dateTimeFormat.[[HourCycle]] is "h11" or "h12", then
|
||
// a. Let pattern be bestFormat.[[pattern12]].
|
||
// b. Let rangePatterns be bestFormat.[[rangePatterns12]].
|
||
// 50. Else,
|
||
// a. Let pattern be bestFormat.[[pattern]].
|
||
// b. Let rangePatterns be bestFormat.[[rangePatterns]].
|
||
// 51. Set dateTimeFormat.[[Pattern]] to pattern.
|
||
// 52. Set dateTimeFormat.[[RangePatterns]] to rangePatterns.
|
||
|
||
// 53. Return dateTimeFormat.
|
||
return date_time_format;
|
||
}
|
||
|
||
// 11.1.3 FormatOffsetTimeZoneIdentifier ( offsetMinutes ), https://tc39.es/ecma402/#sec-formatoffsettimezoneidentifier
|
||
String format_offset_time_zone_identifier(double offset_minutes)
|
||
{
|
||
// 1. If offsetMinutes ≥ 0, let sign be the code unit 0x002B (PLUS SIGN); otherwise, let sign be the code unit 0x002D (HYPHEN-MINUS).
|
||
auto sign = offset_minutes >= 0.0 ? '+' : '-';
|
||
|
||
// 2. Let absoluteMinutes be abs(offsetMinutes).
|
||
auto absolute_minutes = fabs(offset_minutes);
|
||
|
||
// 3. Let hours be floor(absoluteMinutes / 60).
|
||
auto hours = static_cast<i64>(floor(absolute_minutes / 60.0));
|
||
|
||
// 4. Let minutes be absoluteMinutes modulo 60.
|
||
auto minutes = static_cast<i64>(modulo(absolute_minutes, 60.0));
|
||
|
||
// 5. Return the string-concatenation of sign, ToZeroPaddedDecimalString(hours, 2), the code unit 0x003A (COLON), and ToZeroPaddedDecimalString(minutes, 2).
|
||
return MUST(String::formatted("{}{:02}:{:02}", sign, hours, minutes));
|
||
}
|
||
|
||
}
|