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443 lines
23 KiB
C++
443 lines
23 KiB
C++
/*
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* Copyright (c) 2021-2025, Tim Flynn <trflynn89@ladybird.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/ISO8601.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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GC_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<GC::Ref<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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// 15.7.1 CreateDateTimeFormat ( newTarget, locales, options, required, defaults [ , toLocaleStringTimeZone ] ), https://tc39.es/proposal-temporal/#sec-createdatetimeformat
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ThrowCompletionOr<GC::Ref<DateTimeFormat>> create_date_time_format(VM& vm, FunctionObject& new_target, Value locales_value, Value options_value, OptionRequired required, OptionDefaults defaults, Optional<String> const& to_locale_string_time_zone)
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{
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// 1. Let dateTimeFormat be ? OrdinaryCreateFromConstructor(newTarget, "%Intl.DateTimeFormat.prototype%", « [[InitializedDateTimeFormat]], [[Locale]], [[Calendar]], [[NumberingSystem]], [[TimeZone]], [[HourCycle]], [[DateStyle]], [[TimeStyle]], [[DateTimeFormat]], [[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 hour12 be undefined.
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auto hour12 = js_undefined();
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// 3. Let modifyResolutionOptions be a new Abstract Closure with parameters (options) that captures hour12 and performs the following steps when called:
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auto modify_resolution_options = [&](LocaleOptions& options) {
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// a. Set hour12 to options.[[hour12]].
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hour12 = options.hour12;
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// b. Remove field [[hour12]] from options.
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options.hour12 = {};
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// c. If hour12 is not undefined, set options.[[hc]] to null.
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if (!hour12.is_undefined())
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options.hc = Empty {};
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};
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// 4. Let optionsResolution be ? ResolveOptions(%Intl.DateTimeFormat%, %Intl.DateTimeFormat%.[[LocaleData]], locales, options, « COERCE-OPTIONS », modifyResolutionOptions).
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// 5. Set options to optionsResolution.[[Options]].
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// 6. Let r be optionsResolution.[[ResolvedLocale]].
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auto [options, result, _] = TRY(resolve_options(vm, date_time_format, locales_value, options_value, SpecialBehaviors::CoerceOptions, move(modify_resolution_options)));
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// 7. Set dateTimeFormat.[[Locale]] to r.[[Locale]].
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date_time_format->set_locale(move(result.locale));
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date_time_format->set_icu_locale(move(result.icu_locale));
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// 8. Let resolvedCalendar be r.[[ca]].
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// 9. 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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// 10. 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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// 11. Let resolvedLocaleData be r.[[LocaleData]].
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Optional<Unicode::HourCycle> hour_cycle_value;
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Optional<bool> hour12_value;
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// 12. If hour12 is true, then
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// a. Let hc be resolvedLocaleData.[[hourCycle12]].
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// 13. Else if hour12 is false, then
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// a. Let hc be resolvedLocaleData.[[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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// 14. 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 resolvedLocaleData.[[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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// 15. Set dateTimeFormat.[[HourCycle]] to hc.
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// NOTE: The [[HourCycle]] is stored and accessed from [[DateTimeFormat]].
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// 16. 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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// 17. If timeZone is undefined, then
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if (time_zone_value.is_undefined()) {
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// a. If toLocaleStringTimeZone is present, then
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if (to_locale_string_time_zone.has_value()) {
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// i. Set timeZone to toLocaleStringTimeZone.
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time_zone = *to_locale_string_time_zone;
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}
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// b. Else,
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else {
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// i. Set timeZone to SystemTimeZoneIdentifier().
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time_zone = system_time_zone_identifier();
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}
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}
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// 18. Else,
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else {
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// a. If toLocaleStringTimeZone is present, throw a TypeError exception.
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if (to_locale_string_time_zone.has_value())
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return vm.throw_completion<TypeError>(ErrorType::IntlInvalidDateTimeFormatOption, vm.names.timeZone, "a toLocaleString time zone"sv);
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// b. 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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// 19. If IsTimeZoneOffsetString(timeZone) is true, then
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bool is_time_zone_offset_string = JS::is_offset_time_zone_identifier(time_zone);
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if (is_time_zone_offset_string) {
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// a. Let parseResult be ParseText(StringToCodePoints(timeZone), UTCOffset[~SubMinutePrecision]).
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auto parse_result = Temporal::parse_utc_offset(time_zone, Temporal::SubMinutePrecision::No);
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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. Let offsetNanoseconds be ? ParseDateTimeUTCOffset(timeZone).
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auto offset_nanoseconds = TRY(parse_date_time_utc_offset(vm, time_zone));
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// d. Let offsetMinutes be offsetNanoseconds / (6 × 10**10).
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auto offset_minutes = offset_nanoseconds / 60'000'000'000;
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// e. Assert: offsetMinutes is an integer.
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VERIFY(trunc(offset_minutes) == offset_minutes);
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// f. 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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// 20. 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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// 21. 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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// AD-HOC: We must store the massaged time zone for creating ICU formatters for Temporal objects.
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date_time_format->set_temporal_time_zone(time_zone);
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// 22. Let formatOptions be a new Record.
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Unicode::CalendarPattern format_options {};
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// 23. 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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// 24. 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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// 25. For each row of Table 16, 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 current 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 current 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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// 26. Let formatMatcher be ? GetOption(options, "formatMatcher", string, « "basic", "best fit" », "best fit").
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[[maybe_unused]] auto format_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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// 27. 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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// 28. 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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// 29. 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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// 30. 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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// 31. Let formats be resolvedLocaleData.[[formats]].[[<resolvedCalendar>]].
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OwnPtr<Unicode::DateTimeFormat> formatter;
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// 32. 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 resolvedLocaleData.[[styles]].[[<resolvedCalendar>]].
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// e. Let bestFormat be DateTimeStyleFormat(dateStyle, timeStyle, styles).
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formatter = Unicode::DateTimeFormat::create_for_date_and_time_style(
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date_time_format->icu_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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auto best_format = formatter->chosen_pattern();
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using enum Unicode::CalendarPattern::Field;
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// f. If dateStyle is not undefined, then
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if (!date_style.is_undefined()) {
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// i. Set dateTimeFormat.[[TemporalPlainDateFormat]] to AdjustDateTimeStyleFormat(formats, bestFormat, formatMatcher, « [[weekday]], [[era]], [[year]], [[month]], [[day]] »).
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auto temporal_plain_date_format = adjust_date_time_style_format(best_format, { { Weekday, Era, Year, Month, Day } });
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date_time_format->set_temporal_plain_date_format(move(temporal_plain_date_format));
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// ii. Set dateTimeFormat.[[TemporalPlainYearMonthFormat]] to AdjustDateTimeStyleFormat(formats, bestFormat, formatMatcher, « [[era]], [[year]], [[month]] »).
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auto temporal_plain_year_month_format = adjust_date_time_style_format(best_format, { { Era, Year, Month } });
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date_time_format->set_temporal_plain_year_month_format(move(temporal_plain_year_month_format));
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// iii. Set dateTimeFormat.[[TemporalPlainMonthDayFormat]] to AdjustDateTimeStyleFormat(formats, bestFormat, formatMatcher, « [[month]], [[day]] »).
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auto temporal_plain_month_day_format = adjust_date_time_style_format(best_format, { { Month, Day } });
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date_time_format->set_temporal_plain_month_day_format(move(temporal_plain_month_day_format));
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}
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// g. Else,
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else {
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// i. Set dateTimeFormat.[[TemporalPlainDateFormat]] to null.
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// ii. Set dateTimeFormat.[[TemporalPlainYearMonthFormat]] to null.
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// iii. Set dateTimeFormat.[[TemporalPlainMonthDayFormat]] to null.
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}
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// h. If timeStyle is not undefined, then
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if (!time_style.is_undefined()) {
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// i. Set dateTimeFormat.[[TemporalPlainTimeFormat]] to AdjustDateTimeStyleFormat(formats, bestFormat, formatMatcher, « [[dayPeriod]], [[hour]], [[minute]], [[second]], [[fractionalSecondDigits]] »).
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auto temporal_plain_time_format = adjust_date_time_style_format(best_format, { { DayPeriod, Hour, Minute, Second, FractionalSecondDigits } });
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date_time_format->set_temporal_plain_time_format(move(temporal_plain_time_format));
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}
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// i. Else,
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else {
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// i. Set dateTimeFormat.[[TemporalPlainTimeFormat]] to null.
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}
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// j. Set dateTimeFormat.[[TemporalPlainDateTimeFormat]] to AdjustDateTimeStyleFormat(formats, bestFormat, formatMatcher, « [[weekday]], [[era]], [[year]], [[month]], [[day]], [[dayPeriod]], [[hour]], [[minute]], [[second]], [[fractionalSecondDigits]] »).
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auto temporal_plain_date_time_format = adjust_date_time_style_format(best_format, { { Weekday, Era, Year, Month, Day, DayPeriod, Hour, Minute, Second, FractionalSecondDigits } });
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date_time_format->set_temporal_plain_date_time_format(move(temporal_plain_date_time_format));
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// k. Set dateTimeFormat.[[TemporalInstantFormat]] to bestFormat.
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date_time_format->set_temporal_instant_format(move(best_format));
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}
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// 33. Else,
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else {
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// a. Let bestFormat be GetDateTimeFormat(formats, formatMatcher, formatOptions, required, defaults, ALL).
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auto best_format = get_date_time_format(format_options, required, defaults, OptionInherit::All).release_value();
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// b. Set dateTimeFormat.[[TemporalPlainDateFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, DATE, DATE, RELEVANT).
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auto temporal_plain_date_format = get_date_time_format(format_options, OptionRequired::Date, OptionDefaults::Date, OptionInherit::Relevant);
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date_time_format->set_temporal_plain_date_format(move(temporal_plain_date_format));
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// c. Set dateTimeFormat.[[TemporalPlainYearMonthFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, YEAR-MONTH, YEAR-MONTH, RELEVANT).
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auto temporal_plain_year_month_format = get_date_time_format(format_options, OptionRequired::YearMonth, OptionDefaults::YearMonth, OptionInherit::Relevant);
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date_time_format->set_temporal_plain_year_month_format(move(temporal_plain_year_month_format));
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// d. Set dateTimeFormat.[[TemporalPlainMonthDayFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, MONTH-DAY, MONTH-DAY, RELEVANT).
|
||
auto temporal_plain_month_day_format = get_date_time_format(format_options, OptionRequired::MonthDay, OptionDefaults::MonthDay, OptionInherit::Relevant);
|
||
date_time_format->set_temporal_plain_month_day_format(move(temporal_plain_month_day_format));
|
||
|
||
// e. Set dateTimeFormat.[[TemporalPlainTimeFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, TIME, TIME, RELEVANT).
|
||
auto temporal_plain_time_format = get_date_time_format(format_options, OptionRequired::Time, OptionDefaults::Time, OptionInherit::Relevant);
|
||
date_time_format->set_temporal_plain_time_format(move(temporal_plain_time_format));
|
||
|
||
// f. Set dateTimeFormat.[[TemporalPlainDateTimeFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, ANY, ALL, RELEVANT).
|
||
auto temporal_plain_date_time_format = get_date_time_format(format_options, OptionRequired::Any, OptionDefaults::All, OptionInherit::Relevant);
|
||
date_time_format->set_temporal_plain_date_time_format(move(temporal_plain_date_time_format));
|
||
|
||
// g. If toLocaleStringTimeZone is present, then
|
||
if (to_locale_string_time_zone.has_value()) {
|
||
// i. Set dateTimeFormat.[[TemporalInstantFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, ANY, ZONED-DATE-TIME, ALL).
|
||
auto temporal_instant_format = get_date_time_format(format_options, OptionRequired::Any, OptionDefaults::ZonedDateTime, OptionInherit::All);
|
||
date_time_format->set_temporal_instant_format(move(temporal_instant_format));
|
||
}
|
||
// h. Else,
|
||
else {
|
||
// i. Set dateTimeFormat.[[TemporalInstantFormat]] to GetDateTimeFormat(formats, formatMatcher, formatOptions, ANY, ALL, ALL).
|
||
auto temporal_instant_format = get_date_time_format(format_options, OptionRequired::Any, OptionDefaults::All, OptionInherit::All);
|
||
date_time_format->set_temporal_instant_format(move(temporal_instant_format));
|
||
}
|
||
|
||
formatter = Unicode::DateTimeFormat::create_for_pattern_options(
|
||
date_time_format->icu_locale(),
|
||
time_zone,
|
||
best_format);
|
||
}
|
||
|
||
// 34. Set dateTimeFormat.[[DateTimeFormat]] to bestFormat.
|
||
date_time_format->set_date_time_format(formatter->chosen_pattern());
|
||
|
||
// Non-standard, create an ICU number formatter for this Intl object.
|
||
date_time_format->set_formatter(formatter.release_nonnull());
|
||
|
||
// 35. 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));
|
||
}
|
||
|
||
}
|