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LibJS+LibUnicode: Implement the Intl.DateTimeFormat constructor

This commit is contained in:
Timothy Flynn 2021-11-28 17:55:47 -05:00 committed by Linus Groh
parent 75b2a09a2f
commit 16151aa7d5
9 changed files with 1089 additions and 2 deletions

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@ -117,10 +117,12 @@ namespace JS {
P(currencySign) \ P(currencySign) \
P(dateAdd) \ P(dateAdd) \
P(dateFromFields) \ P(dateFromFields) \
P(dateStyle) \
P(dateUntil) \ P(dateUntil) \
P(day) \ P(day) \
P(dayOfWeek) \ P(dayOfWeek) \
P(dayOfYear) \ P(dayOfYear) \
P(dayPeriod) \
P(days) \ P(days) \
P(daysInMonth) \ P(daysInMonth) \
P(daysInWeek) \ P(daysInWeek) \
@ -176,6 +178,7 @@ namespace JS {
P(fontsize) \ P(fontsize) \
P(forEach) \ P(forEach) \
P(format) \ P(format) \
P(formatMatcher) \
P(formatToParts) \ P(formatToParts) \
P(fractionalSecondDigits) \ P(fractionalSecondDigits) \
P(freeze) \ P(freeze) \
@ -241,6 +244,7 @@ namespace JS {
P(hasOwn) \ P(hasOwn) \
P(hasOwnProperty) \ P(hasOwnProperty) \
P(hour) \ P(hour) \
P(hour12) \
P(hourCycle) \ P(hourCycle) \
P(hours) \ P(hours) \
P(hoursInDay) \ P(hoursInDay) \
@ -436,6 +440,7 @@ namespace JS {
P(tanh) \ P(tanh) \
P(test) \ P(test) \
P(then) \ P(then) \
P(timeStyle) \
P(timeZone) \ P(timeZone) \
P(timeZoneName) \ P(timeZoneName) \
P(toDateString) \ P(toDateString) \
@ -485,6 +490,7 @@ namespace JS {
P(values) \ P(values) \
P(warn) \ P(warn) \
P(weekOfYear) \ P(weekOfYear) \
P(weekday) \
P(weeks) \ P(weeks) \
P(with) \ P(with) \
P(withCalendar) \ P(withCalendar) \

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@ -35,6 +35,7 @@
M(IndexOutOfRange, "Index {} is out of range of array length {}") \ M(IndexOutOfRange, "Index {} is out of range of array length {}") \
M(InOperatorWithObject, "'in' operator must be used on an object") \ M(InOperatorWithObject, "'in' operator must be used on an object") \
M(InstanceOfOperatorBadPrototype, "'prototype' property of {} is not an object") \ M(InstanceOfOperatorBadPrototype, "'prototype' property of {} is not an object") \
M(IntlInvalidDateTimeFormatOption, "Option {} cannot be set when also providing {}") \
M(IntlInvalidLanguageTag, "{} is not a structurally valid language tag") \ M(IntlInvalidLanguageTag, "{} is not a structurally valid language tag") \
M(IntlMinimumExceedsMaximum, "Minimum value {} is larger than maximum value {}") \ M(IntlMinimumExceedsMaximum, "Minimum value {} is larger than maximum value {}") \
M(IntlNumberIsNaNOrOutOfRange, "Value {} is NaN or is not between {} and {}") \ M(IntlNumberIsNaNOrOutOfRange, "Value {} is NaN or is not between {} and {}") \

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@ -361,6 +361,10 @@ String insert_unicode_extension_and_canonicalize(Unicode::LocaleID locale, Unico
template<typename T> template<typename T>
static auto& find_key_in_value(T& value, StringView key) static auto& find_key_in_value(T& value, StringView key)
{ {
if (key == "ca"sv)
return value.ca;
if (key == "hc"sv)
return value.hc;
if (key == "nu"sv) if (key == "nu"sv)
return value.nu; return value.nu;

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@ -21,13 +21,17 @@ using Fallback = Variant<Empty, bool, StringView>;
struct LocaleOptions { struct LocaleOptions {
Value locale_matcher; Value locale_matcher;
Optional<String> nu; Optional<String> ca; // [[Calendar]]
Optional<String> hc; // [[HourCycle]]
Optional<String> nu; // [[NumberingSystem]]
}; };
struct LocaleResult { struct LocaleResult {
String locale; String locale;
String data_locale; String data_locale;
Optional<String> nu; Optional<String> ca; // [[Calendar]]
Optional<String> hc; // [[HourCycle]]
Optional<String> nu; // [[NumberingSystem]]
}; };
struct PatternPartition { struct PatternPartition {

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@ -4,7 +4,11 @@
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
#include <AK/NumericLimits.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/DateTimeFormat.h> #include <LibJS/Runtime/Intl/DateTimeFormat.h>
#include <LibJS/Runtime/Temporal/TimeZone.h>
#include <LibUnicode/Locale.h>
namespace JS::Intl { namespace JS::Intl {
@ -51,4 +55,612 @@ StringView DateTimeFormat::style_to_string(Style style)
} }
} }
// 11.1.1 InitializeDateTimeFormat ( dateTimeFormat, locales, options ), https://tc39.es/ecma402/#sec-initializedatetimeformat
ThrowCompletionOr<DateTimeFormat*> initialize_date_time_format(GlobalObject& global_object, DateTimeFormat& date_time_format, Value locales_value, Value options_value)
{
auto& vm = global_object.vm();
// 1. Let requestedLocales be ? CanonicalizeLocaleList(locales).
auto requested_locales = TRY(canonicalize_locale_list(global_object, locales_value));
// 2. Let options be ? ToDateTimeOptions(options, "any", "date").
auto* options = TRY(to_date_time_options(global_object, options_value, OptionRequired::Any, OptionDefaults::Date));
// 3. Let opt be a new Record.
LocaleOptions opt {};
// 4. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
auto matcher = TRY(get_option(global_object, *options, vm.names.localeMatcher, Value::Type::String, AK::Array { "lookup"sv, "best fit"sv }, "best fit"sv));
// 5. Set opt.[[localeMatcher]] to matcher.
opt.locale_matcher = matcher;
// 6. Let calendar be ? GetOption(options, "calendar", "string", undefined, undefined).
auto calendar = TRY(get_option(global_object, *options, vm.names.calendar, Value::Type::String, {}, Empty {}));
// 7. If calendar is not undefined, then
if (!calendar.is_undefined()) {
// a. If calendar does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
if (!Unicode::is_type_identifier(calendar.as_string().string()))
return vm.throw_completion<RangeError>(global_object, ErrorType::OptionIsNotValidValue, calendar, "calendar"sv);
// 8. Set opt.[[ca]] to calendar.
opt.ca = calendar.as_string().string();
}
// 9. Let numberingSystem be ? GetOption(options, "numberingSystem", "string", undefined, undefined).
auto numbering_system = TRY(get_option(global_object, *options, vm.names.numberingSystem, Value::Type::String, {}, Empty {}));
// 10. If numberingSystem is not undefined, then
if (!numbering_system.is_undefined()) {
// a. If numberingSystem does not match the Unicode Locale Identifier type nonterminal, throw a RangeError exception.
if (!Unicode::is_type_identifier(numbering_system.as_string().string()))
return vm.throw_completion<RangeError>(global_object, ErrorType::OptionIsNotValidValue, numbering_system, "numberingSystem"sv);
// 11. Set opt.[[nu]] to numberingSystem.
opt.nu = numbering_system.as_string().string();
}
// 12. Let hour12 be ? GetOption(options, "hour12", "boolean", undefined, undefined).
auto hour12 = TRY(get_option(global_object, *options, vm.names.hour12, Value::Type::Boolean, {}, Empty {}));
// 13. Let hourCycle be ? GetOption(options, "hourCycle", "string", « "h11", "h12", "h23", "h24" », undefined).
auto hour_cycle = TRY(get_option(global_object, *options, vm.names.hourCycle, Value::Type::String, AK::Array { "h11"sv, "h12"sv, "h23"sv, "h24"sv }, Empty {}));
// 14. If hour12 is not undefined, then
if (!hour12.is_undefined()) {
// a. Let hourCycle be null.
hour_cycle = js_null();
}
// 15. Set opt.[[hc]] to hourCycle.
if (!hour_cycle.is_nullish())
opt.hc = hour_cycle.as_string().string();
// 16. Let localeData be %DateTimeFormat%.[[LocaleData]].
// 17. Let r be ResolveLocale(%DateTimeFormat%.[[AvailableLocales]], requestedLocales, opt, %DateTimeFormat%.[[RelevantExtensionKeys]], localeData).
auto result = resolve_locale(requested_locales, opt, DateTimeFormat::relevant_extension_keys());
// 18. Set dateTimeFormat.[[Locale]] to r.[[locale]].
date_time_format.set_locale(move(result.locale));
// 19. Let calendar be r.[[ca]].
// 20. Set dateTimeFormat.[[Calendar]] to calendar.
date_time_format.set_calendar(result.ca.release_value());
// 21. Set dateTimeFormat.[[HourCycle]] to r.[[hc]].
date_time_format.set_hour_cycle(result.hc.release_value());
// 22. Set dateTimeFormat.[[NumberingSystem]] to r.[[nu]].
date_time_format.set_numbering_system(result.nu.release_value());
// 23. Let dataLocale be r.[[dataLocale]].
auto data_locale = move(result.data_locale);
// 24. Let timeZone be ? Get(options, "timeZone").
auto time_zone_value = TRY(options->get(vm.names.timeZone));
String time_zone;
// 25. If timeZone is undefined, then
if (time_zone_value.is_undefined()) {
// a. Let timeZone be DefaultTimeZone().
time_zone = Temporal::default_time_zone();
}
// 26. Else,
else {
// a. Let timeZone be ? ToString(timeZone).
time_zone = TRY(time_zone_value.to_string(global_object));
// b. If the result of IsValidTimeZoneName(timeZone) is false, then
if (!Temporal::is_valid_time_zone_name(time_zone)) {
// i. Throw a RangeError exception.
return vm.throw_completion<RangeError>(global_object, ErrorType::OptionIsNotValidValue, time_zone, vm.names.timeZone);
}
// c. Let timeZone be CanonicalizeTimeZoneName(timeZone).
time_zone = Temporal::canonicalize_time_zone_name(time_zone);
}
// 27. Set dateTimeFormat.[[TimeZone]] to timeZone.
date_time_format.set_time_zone(move(time_zone));
// 28. Let opt be a new Record.
Unicode::CalendarPattern format_options {};
// 29. For each row of Table 4, except the header row, in table order, do
TRY(for_each_calendar_field(global_object, format_options, [&](auto& option, auto const& property, auto const& defaults) -> ThrowCompletionOr<void> {
using ValueType = typename RemoveReference<decltype(option)>::ValueType;
// a. Let prop be the name given in the Property column of the row.
// b. If prop is "fractionalSecondDigits", then
if constexpr (IsIntegral<ValueType>) {
// i. Let value be ? GetNumberOption(options, "fractionalSecondDigits", 1, 3, undefined).
auto value = TRY(get_number_option(global_object, *options, property, 1, 3, {}));
// d. Set opt.[[<prop>]] to value.
if (value.has_value())
option = static_cast<ValueType>(value.value());
}
// c. Else,
else {
// i. Let value be ? GetOption(options, prop, "string", « the strings given in the Values column of the row », undefined).
auto value = TRY(get_option(global_object, *options, property, Value::Type::String, defaults, Empty {}));
// d. Set opt.[[<prop>]] to value.
if (!value.is_undefined())
option = Unicode::calendar_pattern_style_from_string(value.as_string().string());
}
return {};
}));
// 30. Let dataLocaleData be localeData.[[<dataLocale>]].
// 31. Let matcher be ? GetOption(options, "formatMatcher", "string", « "basic", "best fit" », "best fit").
matcher = TRY(get_option(global_object, *options, vm.names.formatMatcher, Value::Type::String, AK::Array { "basic"sv, "best fit"sv }, "best fit"sv));
// 32. Let dateStyle be ? GetOption(options, "dateStyle", "string", « "full", "long", "medium", "short" », undefined).
auto date_style = TRY(get_option(global_object, *options, vm.names.dateStyle, Value::Type::String, AK::Array { "full"sv, "long"sv, "medium"sv, "short"sv }, Empty {}));
// 33. Set dateTimeFormat.[[DateStyle]] to dateStyle.
if (!date_style.is_undefined())
date_time_format.set_date_style(date_style.as_string().string());
// 34. Let timeStyle be ? GetOption(options, "timeStyle", "string", « "full", "long", "medium", "short" », undefined).
auto time_style = TRY(get_option(global_object, *options, vm.names.timeStyle, Value::Type::String, AK::Array { "full"sv, "long"sv, "medium"sv, "short"sv }, Empty {}));
// 35. Set dateTimeFormat.[[TimeStyle]] to timeStyle.
if (!time_style.is_undefined())
date_time_format.set_time_style(time_style.as_string().string());
Optional<Unicode::CalendarPattern> best_format {};
// 36. If dateStyle is not undefined or timeStyle is not undefined, then
if (date_time_format.has_date_style() || date_time_format.has_time_style()) {
// a. For each row in Table 4, except the header row, do
TRY(for_each_calendar_field(global_object, format_options, [&](auto const& option, auto const& property, auto const&) -> ThrowCompletionOr<void> {
// i. Let prop be the name given in the Property column of the row.
// ii. Let p be opt.[[<prop>]].
// iii. If p is not undefined, then
if (option.has_value()) {
// 1. Throw a TypeError exception.
return vm.throw_completion<TypeError>(global_object, ErrorType::IntlInvalidDateTimeFormatOption, property, "dateStyle or timeStyle"sv);
}
return {};
}));
// b. Let styles be dataLocaleData.[[styles]].[[<calendar>]].
// c. Let bestFormat be DateTimeStyleFormat(dateStyle, timeStyle, styles).
best_format = date_time_style_format(data_locale, date_time_format);
}
// 37. Else,
else {
// a. Let formats be dataLocaleData.[[formats]].[[<calendar>]].
auto formats = Unicode::get_calendar_available_formats(data_locale, date_time_format.calendar());
// b. If matcher is "basic", then
if (matcher.as_string().string() == "basic"sv) {
// i. Let bestFormat be BasicFormatMatcher(opt, formats).
best_format = basic_format_matcher(format_options, move(formats));
}
// c. Else,
else {
// i. Let bestFormat be BestFitFormatMatcher(opt, formats).
best_format = best_fit_format_matcher(format_options, move(formats));
}
}
// Non-standard, best_format will be empty if Unicode data generation is disabled.
if (!best_format.has_value())
return &date_time_format;
// 38. For each row in Table 4, except the header row, in table order, do
date_time_format.for_each_calendar_field_zipped_with(*best_format, [&](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;
}
});
String pattern;
// 39. If dateTimeFormat.[[Hour]] is undefined, then
if (!date_time_format.has_hour()) {
// a. Set dateTimeFormat.[[HourCycle]] to undefined.
date_time_format.clear_hour_cycle();
// b. Let pattern be bestFormat.[[pattern]].
pattern = move(best_format->pattern);
// FIXME: Implement step c when range formats are parsed by LibUnicode.
// c. Let rangePatterns be bestFormat.[[rangePatterns]].
}
// 40. Else,
else {
// a. Let hcDefault be dataLocaleData.[[hourCycle]].
auto default_hour_cycle = Unicode::get_default_regional_hour_cycle(data_locale);
VERIFY(default_hour_cycle.has_value());
// b. Let hc be dateTimeFormat.[[HourCycle]].
// c. If hc is null, then
// i. Set hc to hcDefault.
auto hour_cycle = date_time_format.has_hour_cycle() ? date_time_format.hour_cycle() : *default_hour_cycle;
// d. If hour12 is not undefined, then
if (!hour12.is_undefined()) {
// i. If hour12 is true, then
if (hour12.as_bool()) {
// 1. If hcDefault is "h11" or "h23", then
if ((default_hour_cycle == Unicode::HourCycle::H11) || (default_hour_cycle == Unicode::HourCycle::H23)) {
// a. Set hc to "h11".
hour_cycle = Unicode::HourCycle::H11;
}
// 2. Else,
else {
// a. Set hc to "h12".
hour_cycle = Unicode::HourCycle::H12;
}
}
// ii. Else,
else {
// 1. Assert: hour12 is false.
// 2. If hcDefault is "h11" or "h23", then
if ((default_hour_cycle == Unicode::HourCycle::H11) || (default_hour_cycle == Unicode::HourCycle::H23)) {
// a. Set hc to "h23".
hour_cycle = Unicode::HourCycle::H23;
}
// 3. Else,
else {
// a. Set hc to "h24".
hour_cycle = Unicode::HourCycle::H24;
}
}
}
// e. Set dateTimeFormat.[[HourCycle]] to hc.
date_time_format.set_hour_cycle(hour_cycle);
// FIXME: Implement steps f.ii and g.ii when range formats are parsed by LibUnicode.
// f. If dateTimeformat.[[HourCycle]] is "h11" or "h12", then
if ((hour_cycle == Unicode::HourCycle::H11) || (hour_cycle == Unicode::HourCycle::H12)) {
// i. Let pattern be bestFormat.[[pattern12]].
if (best_format->pattern12.has_value())
pattern = best_format->pattern12.release_value();
// ii. Let rangePatterns be bestFormat.[[rangePatterns12]].
}
// g. Else,
else {
// i. Let pattern be bestFormat.[[pattern]].
pattern = move(best_format->pattern);
// ii. Let rangePatterns be bestFormat.[[rangePatterns]].
}
}
// 41. Set dateTimeFormat.[[Pattern]] to pattern.
date_time_format.set_pattern(move(pattern));
// FIXME: Implement step 42 when range formats are parsed by LibUnicode.
// 42. Set dateTimeFormat.[[RangePatterns]] to rangePatterns.
// 43. Return dateTimeFormat.
return &date_time_format;
}
// 11.1.2 ToDateTimeOptions ( options, required, defaults ), https://tc39.es/ecma402/#sec-todatetimeoptions
ThrowCompletionOr<Object*> to_date_time_options(GlobalObject& global_object, Value options_value, OptionRequired required, OptionDefaults defaults)
{
auto& vm = global_object.vm();
// 1. If options is undefined, let options be null; otherwise let options be ? ToObject(options).
Object* options = nullptr;
if (!options_value.is_undefined())
options = TRY(options_value.to_object(global_object));
// 2. Let options be OrdinaryObjectCreate(options).
options = Object::create(global_object, options);
// 3. Let needDefaults be true.
bool needs_defaults = true;
// 4. If required is "date" or "any", then
if ((required == OptionRequired::Date) || (required == OptionRequired::Any)) {
// a. For each property name prop of « "weekday", "year", "month", "day" », do
for (auto const& property : AK::Array { vm.names.weekday, vm.names.year, vm.names.month, vm.names.day }) {
// i. Let value be ? Get(options, prop).
auto value = TRY(options->get(property));
// ii. If value is not undefined, let needDefaults be false.
if (!value.is_undefined())
needs_defaults = false;
}
}
// 5. If required is "time" or "any", then
if ((required == OptionRequired::Time) || (required == OptionRequired::Any)) {
// a. For each property name prop of « "dayPeriod", "hour", "minute", "second", "fractionalSecondDigits" », do
for (auto const& property : AK::Array { vm.names.dayPeriod, vm.names.hour, vm.names.minute, vm.names.second, vm.names.fractionalSecondDigits }) {
// i. Let value be ? Get(options, prop).
auto value = TRY(options->get(property));
// ii. If value is not undefined, let needDefaults be false.
if (!value.is_undefined())
needs_defaults = false;
}
}
// 6. Let dateStyle be ? Get(options, "dateStyle").
auto date_style = TRY(options->get(vm.names.dateStyle));
// 7. Let timeStyle be ? Get(options, "timeStyle").
auto time_style = TRY(options->get(vm.names.timeStyle));
// 8. If dateStyle is not undefined or timeStyle is not undefined, let needDefaults be false.
if (!date_style.is_undefined() || !time_style.is_undefined())
needs_defaults = false;
// 9. If required is "date" and timeStyle is not undefined, then
if ((required == OptionRequired::Date) && !time_style.is_undefined()) {
// a. Throw a TypeError exception.
return vm.throw_completion<TypeError>(global_object, ErrorType::IntlInvalidDateTimeFormatOption, "timeStyle"sv, "date"sv);
}
// 10. If required is "time" and dateStyle is not undefined, then
if ((required == OptionRequired::Time) && !date_style.is_undefined()) {
// a. Throw a TypeError exception.
return vm.throw_completion<TypeError>(global_object, ErrorType::IntlInvalidDateTimeFormatOption, "dateStyle"sv, "time"sv);
}
// 11. If needDefaults is true and defaults is either "date" or "all", then
if (needs_defaults && ((defaults == OptionDefaults::Date) || (defaults == OptionDefaults::All))) {
// a. For each property name prop of « "year", "month", "day" », do
for (auto const& property : AK::Array { vm.names.year, vm.names.month, vm.names.day }) {
// i. Perform ? CreateDataPropertyOrThrow(options, prop, "numeric").
TRY(options->create_data_property_or_throw(property, js_string(vm, "numeric"sv)));
}
}
// 12. If needDefaults is true and defaults is either "time" or "all", then
if (needs_defaults && ((defaults == OptionDefaults::Time) || (defaults == OptionDefaults::All))) {
// a. For each property name prop of « "hour", "minute", "second" », do
for (auto const& property : AK::Array { vm.names.hour, vm.names.minute, vm.names.second }) {
// i. Perform ? CreateDataPropertyOrThrow(options, prop, "numeric").
TRY(options->create_data_property_or_throw(property, js_string(vm, "numeric"sv)));
}
}
// 13. Return options.
return options;
}
// 11.1.3 DateTimeStyleFormat ( dateStyle, timeStyle, styles ), https://tc39.es/ecma402/#sec-date-time-style-format
Optional<Unicode::CalendarPattern> date_time_style_format(StringView data_locale, DateTimeFormat& date_time_format)
{
Unicode::CalendarPattern time_format {};
Unicode::CalendarPattern date_format {};
auto get_pattern = [&](auto type, auto style) -> Optional<Unicode::CalendarPattern> {
auto formats = Unicode::get_calendar_format(data_locale, date_time_format.calendar(), type);
if (formats.has_value()) {
switch (style) {
case DateTimeFormat::Style::Full:
return formats->full_format;
case DateTimeFormat::Style::Long:
return formats->long_format;
case DateTimeFormat::Style::Medium:
return formats->medium_format;
case DateTimeFormat::Style::Short:
return formats->short_format;
}
}
return {};
};
// 1. If timeStyle is not undefined, then
if (date_time_format.has_time_style()) {
// a. Assert: timeStyle is one of "full", "long", "medium", or "short".
// b. Let timeFormat be styles.[[TimeFormat]].[[<timeStyle>]].
auto pattern = get_pattern(Unicode::CalendarFormatType::Time, date_time_format.time_style());
if (!pattern.has_value())
return {};
time_format = pattern.release_value();
}
// 2. If dateStyle is not undefined, then
if (date_time_format.has_date_style()) {
// a. Assert: dateStyle is one of "full", "long", "medium", or "short".
// b. Let dateFormat be styles.[[DateFormat]].[[<dateStyle>]].
auto pattern = get_pattern(Unicode::CalendarFormatType::Date, date_time_format.date_style());
if (!pattern.has_value())
return {};
date_format = pattern.release_value();
}
// 3. If dateStyle is not undefined and timeStyle is not undefined, then
if (date_time_format.has_date_style() && date_time_format.has_time_style()) {
// a. Let format be a new Record.
Unicode::CalendarPattern format {};
// b. Add to format all fields from dateFormat except [[pattern]] and [[rangePatterns]].
format.for_each_calendar_field_zipped_with(date_format, [](auto& format_field, auto const& date_format_field) {
format_field = date_format_field;
});
// c. Add to format all fields from timeFormat except [[pattern]], [[rangePatterns]], [[pattern12]], and [[rangePatterns12]], if present.
format.for_each_calendar_field_zipped_with(time_format, [](auto& format_field, auto const& time_format_field) {
if (time_format_field.has_value())
format_field = time_format_field;
});
// d. Let connector be styles.[[DateTimeFormat]].[[<dateStyle>]].
auto connector = get_pattern(Unicode::CalendarFormatType::DateTime, date_time_format.date_style());
if (!connector.has_value())
return {};
// e. Let pattern be the string connector with the substring "{0}" replaced with timeFormat.[[pattern]] and the substring "{1}" replaced with dateFormat.[[pattern]].
auto pattern = connector->pattern.replace("{0}"sv, time_format.pattern).replace("{1}"sv, date_format.pattern);
// f. Set format.[[pattern]] to pattern.
format.pattern = move(pattern);
// g. If timeFormat has a [[pattern12]] field, then
if (time_format.pattern12.has_value()) {
// i. Let pattern12 be the string connector with the substring "{0}" replaced with timeFormat.[[pattern12]] and the substring "{1}" replaced with dateFormat.[[pattern]].
auto pattern12 = connector->pattern.replace("{0}"sv, *time_format.pattern12).replace("{1}"sv, date_format.pattern);
// ii. Set format.[[pattern12]] to pattern12.
format.pattern12 = move(pattern12);
}
// FIXME: Implement steps h-j when range formats are parsed by LibUnicode.
// h. Let dateTimeRangeFormat be styles.[[DateTimeRangeFormat]].[[<dateStyle>]].[[<timeStyle>]].
// i. Set format.[[rangePatterns]] to dateTimeRangeFormat.[[rangePatterns]].
// j. If dateTimeRangeFormat has a [[rangePatterns12]] field, then
// i. Set format.[[rangePatterns12]] to dateTimeRangeFormat.[[rangePatterns12]].
// k. Return format.
return format;
}
// 4. If timeStyle is not undefined, then
if (date_time_format.has_time_style()) {
// a. Return timeFormat.
return time_format;
}
// 5. Assert: dateStyle is not undefined.
VERIFY(date_time_format.has_date_style());
// 6. Return dateFormat.
return date_format;
}
// 11.1.4 BasicFormatMatcher ( options, formats ), https://tc39.es/ecma402/#sec-basicformatmatcher
Optional<Unicode::CalendarPattern> basic_format_matcher(Unicode::CalendarPattern const& options, Vector<Unicode::CalendarPattern> formats)
{
// 1. Let removalPenalty be 120.
constexpr int removal_penalty = 120;
// 2. Let additionPenalty be 20.
constexpr int addition_penalty = 20;
// 3. Let longLessPenalty be 8.
constexpr int long_less_penalty = 8;
// 4. Let longMorePenalty be 6.
constexpr int long_more_penalty = 6;
// 5. Let shortLessPenalty be 6.
constexpr int short_less_penalty = 6;
// 6. Let shortMorePenalty be 3.
constexpr int short_more_penalty = 3;
// 7. Let bestScore be -Infinity.
int best_score = NumericLimits<int>::min();
// 8. Let bestFormat be undefined.
Optional<Unicode::CalendarPattern> best_format;
// 9. Assert: Type(formats) is List.
// 10. For each element format of formats, do
for (auto& format : formats) {
// a. Let score be 0.
int score = 0;
// b. For each property name property shown in Table 4, do
format.for_each_calendar_field_zipped_with(options, [&](auto const& format_prop, auto const& options_prop) {
using ValueType = typename RemoveReference<decltype(options_prop)>::ValueType;
// i. If options has a field [[<property>]], let optionsProp be options.[[<property>]]; else let optionsProp be undefined.
// ii. If format has a field [[<property>]], let formatProp be format.[[<property>]]; else let formatProp be undefined.
// iii. If optionsProp is undefined and formatProp is not undefined, decrease score by additionPenalty.
if (!options_prop.has_value() && format_prop.has_value()) {
score -= addition_penalty;
}
// iv. Else if optionsProp is not undefined and formatProp is undefined, decrease score by removalPenalty.
else if (options_prop.has_value() && !format_prop.has_value()) {
score -= removal_penalty;
}
// v. Else if optionsProp ≠ formatProp, then
else if (options_prop != format_prop) {
using ValuesType = Conditional<IsIntegral<ValueType>, AK::Array<u8, 3>, AK::Array<Unicode::CalendarPatternStyle, 5>>;
ValuesType values {};
// 1. If property is "fractionalSecondDigits", then
if constexpr (IsIntegral<ValueType>) {
// a. Let values be « 1𝔽, 2𝔽, 3𝔽 ».
values = { 1, 2, 3 };
}
// 2. Else,
else {
// a. Let values be « "2-digit", "numeric", "narrow", "short", "long" ».
values = {
Unicode::CalendarPatternStyle::TwoDigit,
Unicode::CalendarPatternStyle::Numeric,
Unicode::CalendarPatternStyle::Narrow,
Unicode::CalendarPatternStyle::Short,
Unicode::CalendarPatternStyle::Long,
};
}
// 3. Let optionsPropIndex be the index of optionsProp within values.
auto options_prop_index = static_cast<int>(find_index(values.begin(), values.end(), *options_prop));
// 4. Let formatPropIndex be the index of formatProp within values.
auto format_prop_index = static_cast<int>(find_index(values.begin(), values.end(), *format_prop));
// 5. Let delta be max(min(formatPropIndex - optionsPropIndex, 2), -2).
int delta = max(min(format_prop_index - options_prop_index, 2), -2);
// 6. If delta = 2, decrease score by longMorePenalty.
if (delta == 2)
score -= long_more_penalty;
// 7. Else if delta = 1, decrease score by shortMorePenalty.
else if (delta == 1)
score -= short_more_penalty;
// 8. Else if delta = -1, decrease score by shortLessPenalty.
else if (delta == -1)
score -= short_less_penalty;
// 9. Else if delta = -2, decrease score by longLessPenalty.
else if (delta == -2)
score -= long_less_penalty;
}
});
// c. If score > bestScore, then
if (score > best_score) {
// i. Let bestScore be score.
best_score = score;
// ii. Let bestFormat be format.
best_format = format;
}
}
// 11. Return bestFormat.
return best_format;
}
// 11.1.5 BestFitFormatMatcher ( options, formats ), https://tc39.es/ecma402/#sec-bestfitformatmatcher
Optional<Unicode::CalendarPattern> best_fit_format_matcher(Unicode::CalendarPattern const& options, Vector<Unicode::CalendarPattern> formats)
{
// When the BestFitFormatMatcher abstract operation is called with two arguments options and formats, it performs
// implementation dependent steps, which should return a set of component representations that a typical user of
// the selected locale would perceive as at least as good as the one returned by BasicFormatMatcher.
return basic_format_matcher(options, move(formats));
}
} }

View file

@ -10,6 +10,8 @@
#include <AK/StringView.h> #include <AK/StringView.h>
#include <AK/Types.h> #include <AK/Types.h>
#include <AK/Vector.h> #include <AK/Vector.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Object.h> #include <LibJS/Runtime/Object.h>
#include <LibUnicode/DateTimeFormat.h> #include <LibUnicode/DateTimeFormat.h>
@ -123,4 +125,48 @@ private:
Optional<Style> m_time_style; // [[TimeStyle]] Optional<Style> m_time_style; // [[TimeStyle]]
}; };
enum class OptionRequired {
Any,
Date,
Time,
};
enum class OptionDefaults {
All,
Date,
Time,
};
ThrowCompletionOr<DateTimeFormat*> initialize_date_time_format(GlobalObject& global_object, DateTimeFormat& date_time_format, Value locales_value, Value options_value);
ThrowCompletionOr<Object*> to_date_time_options(GlobalObject& global_object, Value options_value, OptionRequired, OptionDefaults);
Optional<Unicode::CalendarPattern> date_time_style_format(StringView data_locale, DateTimeFormat& date_time_format);
Optional<Unicode::CalendarPattern> basic_format_matcher(Unicode::CalendarPattern const& options, Vector<Unicode::CalendarPattern> formats);
Optional<Unicode::CalendarPattern> best_fit_format_matcher(Unicode::CalendarPattern const& options, Vector<Unicode::CalendarPattern> formats);
template<typename Callback>
ThrowCompletionOr<void> for_each_calendar_field(GlobalObject& global_object, Unicode::CalendarPattern& pattern, Callback&& callback)
{
auto& vm = global_object.vm();
constexpr auto narrow_short_long = AK::Array { "narrow"sv, "short"sv, "long"sv };
constexpr auto two_digit_numeric = AK::Array { "2-digit"sv, "numeric"sv };
constexpr auto two_digit_numeric_narrow_short_long = AK::Array { "2-digit"sv, "numeric"sv, "narrow"sv, "short"sv, "long"sv };
constexpr auto short_long = AK::Array { "short"sv, "long"sv };
// Table 4: Components of date and time formats, https://tc39.es/ecma402/#table-datetimeformat-components
TRY(callback(pattern.weekday, vm.names.weekday, narrow_short_long));
TRY(callback(pattern.era, vm.names.era, narrow_short_long));
TRY(callback(pattern.year, vm.names.year, two_digit_numeric));
TRY(callback(pattern.month, vm.names.month, two_digit_numeric_narrow_short_long));
TRY(callback(pattern.day, vm.names.day, two_digit_numeric));
TRY(callback(pattern.day_period, vm.names.dayPeriod, narrow_short_long));
TRY(callback(pattern.hour, vm.names.hour, two_digit_numeric));
TRY(callback(pattern.minute, vm.names.minute, two_digit_numeric));
TRY(callback(pattern.second, vm.names.second, two_digit_numeric));
TRY(callback(pattern.fractional_second_digits, vm.names.fractionalSecondDigits, Empty {}));
TRY(callback(pattern.time_zone_name, vm.names.timeZoneName, short_long));
return {};
}
} }

View file

@ -38,11 +38,22 @@ ThrowCompletionOr<Value> DateTimeFormatConstructor::call()
// 11.2.1 Intl.DateTimeFormat ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat // 11.2.1 Intl.DateTimeFormat ( [ locales [ , options ] ] ), https://tc39.es/ecma402/#sec-intl.datetimeformat
ThrowCompletionOr<Object*> DateTimeFormatConstructor::construct(FunctionObject& new_target) ThrowCompletionOr<Object*> DateTimeFormatConstructor::construct(FunctionObject& new_target)
{ {
auto& vm = this->vm();
auto& global_object = this->global_object(); auto& global_object = this->global_object();
auto locales = vm.argument(0);
auto options = vm.argument(1);
// 2. Let dateTimeFormat be ? OrdinaryCreateFromConstructor(newTarget, "%DateTimeFormat.prototype%", « [[InitializedDateTimeFormat]], [[Locale]], [[Calendar]], [[NumberingSystem]], [[TimeZone]], [[Weekday]], [[Era]], [[Year]], [[Month]], [[Day]], [[DayPeriod]], [[Hour]], [[Minute]], [[Second]], [[FractionalSecondDigits]], [[TimeZoneName]], [[HourCycle]], [[Pattern]], [[BoundFormat]] »). // 2. Let dateTimeFormat be ? OrdinaryCreateFromConstructor(newTarget, "%DateTimeFormat.prototype%", « [[InitializedDateTimeFormat]], [[Locale]], [[Calendar]], [[NumberingSystem]], [[TimeZone]], [[Weekday]], [[Era]], [[Year]], [[Month]], [[Day]], [[DayPeriod]], [[Hour]], [[Minute]], [[Second]], [[FractionalSecondDigits]], [[TimeZoneName]], [[HourCycle]], [[Pattern]], [[BoundFormat]] »).
auto* date_time_format = TRY(ordinary_create_from_constructor<DateTimeFormat>(global_object, new_target, &GlobalObject::intl_date_time_format_prototype)); auto* date_time_format = TRY(ordinary_create_from_constructor<DateTimeFormat>(global_object, new_target, &GlobalObject::intl_date_time_format_prototype));
// 3. Perform ? InitializeDateTimeFormat(dateTimeFormat, locales, options).
TRY(initialize_date_time_format(global_object, *date_time_format, locales, options));
// 4. If the implementation supports the normative optional constructor mode of 4.3 Note 1, then
// a. Let this be the this value.
// b. Return ? ChainDateTimeFormat(dateTimeFormat, NewTarget, this).
// 5. Return dateTimeFormat. // 5. Return dateTimeFormat.
return date_time_format; return date_time_format;
} }

View file

@ -1,5 +1,392 @@
describe("errors", () => {
test("structurally invalid tag", () => {
expect(() => {
new Intl.DateTimeFormat("root");
}).toThrowWithMessage(RangeError, "root is not a structurally valid language tag");
expect(() => {
new Intl.DateTimeFormat("en-");
}).toThrowWithMessage(RangeError, "en- is not a structurally valid language tag");
expect(() => {
new Intl.DateTimeFormat("Latn");
}).toThrowWithMessage(RangeError, "Latn is not a structurally valid language tag");
expect(() => {
new Intl.DateTimeFormat("en-u-aa-U-aa");
}).toThrowWithMessage(RangeError, "en-u-aa-U-aa is not a structurally valid language tag");
});
test("options is an invalid type", () => {
expect(() => {
new Intl.DateTimeFormat("en", null);
}).toThrowWithMessage(TypeError, "ToObject on null or undefined");
});
test("localeMatcher option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { localeMatcher: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option localeMatcher");
});
test("calendar option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { calendar: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option calendar");
});
test("numberingSystem option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { numberingSystem: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option numberingSystem");
});
test("hourCycle option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { hourCycle: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option hourCycle");
});
test("timeZone option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { timeZone: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option timeZone");
});
test("era option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { era: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option era");
expect(() => {
new Intl.DateTimeFormat("en", { era: "narrow", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option era cannot be set when also providing dateStyle or timeStyle"
);
});
test("year option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { year: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option year");
expect(() => {
new Intl.DateTimeFormat("en", { year: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option year cannot be set when also providing dateStyle or timeStyle"
);
});
test("month option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { month: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option month");
expect(() => {
new Intl.DateTimeFormat("en", { month: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option month cannot be set when also providing dateStyle or timeStyle"
);
});
test("weekday option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { weekday: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option weekday");
expect(() => {
new Intl.DateTimeFormat("en", { weekday: "narrow", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option weekday cannot be set when also providing dateStyle or timeStyle"
);
});
test("day option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { day: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option day");
expect(() => {
new Intl.DateTimeFormat("en", { day: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option day cannot be set when also providing dateStyle or timeStyle"
);
});
test("dayPeriod option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { dayPeriod: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option dayPeriod");
expect(() => {
new Intl.DateTimeFormat("en", { dayPeriod: "narrow", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option dayPeriod cannot be set when also providing dateStyle or timeStyle"
);
});
test("hour option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { hour: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option hour");
expect(() => {
new Intl.DateTimeFormat("en", { hour: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option hour cannot be set when also providing dateStyle or timeStyle"
);
});
test("minute option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { minute: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option minute");
expect(() => {
new Intl.DateTimeFormat("en", { minute: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option minute cannot be set when also providing dateStyle or timeStyle"
);
});
test("second option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { second: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option second");
expect(() => {
new Intl.DateTimeFormat("en", { second: "numeric", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option second cannot be set when also providing dateStyle or timeStyle"
);
});
test("fractionalSecondDigits option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: 1n });
}).toThrowWithMessage(TypeError, "Cannot convert BigInt to number");
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: "hello!" });
}).toThrowWithMessage(RangeError, "Value NaN is NaN or is not between 1 and 3");
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: 0 });
}).toThrowWithMessage(RangeError, "Value 0 is NaN or is not between 1 and 3");
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: 4 });
}).toThrowWithMessage(RangeError, "Value 4 is NaN or is not between 1 and 3");
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: 1, dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option fractionalSecondDigits cannot be set when also providing dateStyle or timeStyle"
);
});
test("timeZoneName option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { timeZoneName: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option timeZoneName");
expect(() => {
new Intl.DateTimeFormat("en", { timeZoneName: "short", dateStyle: "long" });
}).toThrowWithMessage(
TypeError,
"Option timeZoneName cannot be set when also providing dateStyle or timeStyle"
);
});
test("formatMatcher option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { formatMatcher: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option formatMatcher");
});
test("dateStyle option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { dateStyle: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option dateStyle");
});
test("timeStyle option is invalid", () => {
expect(() => {
new Intl.DateTimeFormat("en", { timeStyle: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option timeStyle");
});
});
describe("normal behavior", () => { describe("normal behavior", () => {
test("length is 0", () => { test("length is 0", () => {
expect(Intl.DateTimeFormat).toHaveLength(0); expect(Intl.DateTimeFormat).toHaveLength(0);
}); });
test("all valid localeMatcher options", () => {
["lookup", "best fit"].forEach(localeMatcher => {
expect(() => {
new Intl.DateTimeFormat("en", { localeMatcher: localeMatcher });
}).not.toThrow();
});
});
test("valid calendar options", () => {
["generic", "gregory"].forEach(calendar => {
expect(() => {
new Intl.DateTimeFormat("en", { calendar: calendar });
}).not.toThrow();
});
});
test("valid numberingSystem options", () => {
["latn", "arab", "abc-def-ghi"].forEach(numberingSystem => {
expect(() => {
new Intl.DateTimeFormat("en", { numberingSystem: numberingSystem });
}).not.toThrow();
});
});
test("valid hour12 options", () => {
[true, false].forEach(hour12 => {
expect(() => {
new Intl.DateTimeFormat("en", { hour12: hour12 });
}).not.toThrow();
});
});
test("all valid hourCycle options", () => {
["h11", "h12", "h23", "h24"].forEach(hourCycle => {
expect(() => {
new Intl.DateTimeFormat("en", { hourCycle: hourCycle });
}).not.toThrow();
});
});
test("valid timeZone options", () => {
expect(() => {
new Intl.DateTimeFormat("en", { timeZone: "UTC" });
}).not.toThrow();
});
test("all valid weekday options", () => {
["narrow", "short", "long"].forEach(weekday => {
expect(() => {
new Intl.DateTimeFormat("en", { weekday: weekday });
}).not.toThrow();
});
});
test("all valid era options", () => {
["narrow", "short", "long"].forEach(era => {
expect(() => {
new Intl.DateTimeFormat("en", { era: era });
}).not.toThrow();
});
});
test("all valid year options", () => {
["2-digit", "numeric"].forEach(year => {
expect(() => {
new Intl.DateTimeFormat("en", { year: year });
}).not.toThrow();
});
});
test("all valid month options", () => {
["2-digit", "numeric", "narrow", "short", "long"].forEach(month => {
expect(() => {
new Intl.DateTimeFormat("en", { month: month });
}).not.toThrow();
});
});
test("all valid day options", () => {
["2-digit", "numeric"].forEach(day => {
expect(() => {
new Intl.DateTimeFormat("en", { day: day });
}).not.toThrow();
});
});
test("all valid dayPeriod options", () => {
["narrow", "short", "long"].forEach(dayPeriod => {
expect(() => {
new Intl.DateTimeFormat("en", { dayPeriod: dayPeriod });
}).not.toThrow();
});
});
test("all valid hour options", () => {
["2-digit", "numeric"].forEach(hour => {
expect(() => {
new Intl.DateTimeFormat("en", { hour: hour });
}).not.toThrow();
});
});
test("all valid minute options", () => {
["2-digit", "numeric"].forEach(minute => {
expect(() => {
new Intl.DateTimeFormat("en", { minute: minute });
}).not.toThrow();
});
});
test("all valid second options", () => {
["2-digit", "numeric"].forEach(second => {
expect(() => {
new Intl.DateTimeFormat("en", { second: second });
}).not.toThrow();
});
});
test("all valid fractionalSecondDigits options", () => {
[1, 2, 3].forEach(fractionalSecondDigits => {
expect(() => {
new Intl.DateTimeFormat("en", { fractionalSecondDigits: fractionalSecondDigits });
}).not.toThrow();
});
});
test("all valid timeZoneName options", () => {
["short", "long"].forEach(timeZoneName => {
expect(() => {
new Intl.DateTimeFormat("en", { timeZoneName: timeZoneName });
}).not.toThrow();
});
});
test("all valid formatMatcher options", () => {
["basic", "best fit"].forEach(formatMatcher => {
expect(() => {
new Intl.DateTimeFormat("en", { formatMatcher: formatMatcher });
}).not.toThrow();
});
});
test("all valid dateStyle options", () => {
["full", "long", "medium", "short"].forEach(dateStyle => {
expect(() => {
new Intl.DateTimeFormat("en", { dateStyle: dateStyle });
}).not.toThrow();
});
});
test("all valid timeStyle options", () => {
["full", "long", "medium", "short"].forEach(timeStyle => {
expect(() => {
new Intl.DateTimeFormat("en", { timeStyle: timeStyle });
}).not.toThrow();
});
});
}); });

View file

@ -31,6 +31,22 @@ enum class CalendarPatternStyle : u8 {
}; };
struct CalendarPattern { struct CalendarPattern {
template<typename Callback>
void for_each_calendar_field_zipped_with(CalendarPattern const& other, Callback&& callback)
{
callback(era, other.era);
callback(year, other.year);
callback(month, other.month);
callback(weekday, other.weekday);
callback(day, other.day);
callback(day_period, other.day_period);
callback(hour, other.hour);
callback(minute, other.minute);
callback(second, other.second);
callback(fractional_second_digits, other.fractional_second_digits);
callback(time_zone_name, other.time_zone_name);
}
String pattern {}; String pattern {};
Optional<String> pattern12 {}; Optional<String> pattern12 {};