JSValue IntlDateTimeFormat::format(ExecState& exec, double value)
{
VM& vm = exec.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// 12.3.4 FormatDateTime abstract operation (ECMA-402 2.0)
if (!m_initializedDateTimeFormat) {
initializeDateTimeFormat(exec, jsUndefined(), jsUndefined());
ASSERT(!scope.exception());
}
// 1. If x is not a finite Number, then throw a RangeError exception.
if (!std::isfinite(value))
return throwRangeError(&exec, scope, ASCIILiteral("date value is not finite in DateTimeFormat format()"));
// Delegate remaining steps to ICU.
UErrorCode status = U_ZERO_ERROR;
Vector<UChar, 32> result(32);
auto resultLength = udat_format(m_dateFormat.get(), value, result.data(), result.size(), nullptr, &status);
if (status == U_BUFFER_OVERFLOW_ERROR) {
status = U_ZERO_ERROR;
result.grow(resultLength);
udat_format(m_dateFormat.get(), value, result.data(), resultLength, nullptr, &status);
}
if (U_FAILURE(status))
return throwTypeError(&exec, scope, ASCIILiteral("failed to format date value"));
return jsString(&exec, String(result.data(), resultLength));
}
EncodedJSValue JSC_HOST_CALL IntlDateTimeFormatFuncFormatDateTime(ExecState* state)
{
// 12.3.4 DateTime Format Functions (ECMA-402 2.0)
// 1. Let dtf be the this value.
IntlDateTimeFormat* format = jsDynamicCast<IntlDateTimeFormat*>(state->thisValue());
// 2. Assert: Type(dtf) is Object and dtf has an [[initializedDateTimeFormat]] internal slot whose value is true.
if (!format)
return JSValue::encode(throwTypeError(state));
JSValue date = state->argument(0);
double value;
// 3. If date is not provided or is undefined, then
if (date.isUndefined()) {
// a. Let x be %Date_now%().
value = JSValue::decode(dateNow(state)).toNumber(state);
} else {
// 4. Else
// a. Let x be ToNumber(date).
value = date.toNumber(state);
// b. ReturnIfAbrupt(x).
if (state->hadException())
return JSValue::encode(jsUndefined());
}
// 5. Return FormatDateTime(dtf, x).
// 12.3.4 FormatDateTime abstract operation (ECMA-402 2.0)
// 1. If x is not a finite Number, then throw a RangeError exception.
if (!std::isfinite(value))
return JSValue::encode(throwRangeError(state, ASCIILiteral("date value is not finite in DateTimeFormat.format()")));
// FIXME: implement 2 - 9
// Return new Date(value).toString() until properly implemented.
VM& vm = state->vm();
JSGlobalObject* globalObject = state->callee()->globalObject();
DateInstance* d = DateInstance::create(vm, globalObject->dateStructure(), value);
return JSValue::encode(JSValue(d).toString(state));
}
void IntlDateTimeFormat::initializeDateTimeFormat(ExecState& exec, JSValue locales, JSValue originalOptions)
{
VM& vm = exec.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// 12.1.1 InitializeDateTimeFormat (dateTimeFormat, locales, options) (ECMA-402 2.0)
// 1. If dateTimeFormat.[[initializedIntlObject]] is true, throw a TypeError exception.
// 2. Set dateTimeFormat.[[initializedIntlObject]] to true.
// 3. Let requestedLocales be CanonicalizeLocaleList(locales).
Vector<String> requestedLocales = canonicalizeLocaleList(exec, locales);
// 4. ReturnIfAbrupt(requestedLocales),
RETURN_IF_EXCEPTION(scope, void());
// 5. Let options be ToDateTimeOptions(options, "any", "date").
JSObject* options = toDateTimeOptionsAnyDate(exec, originalOptions);
// 6. ReturnIfAbrupt(options).
RETURN_IF_EXCEPTION(scope, void());
// 7. Let opt be a new Record.
HashMap<String, String> localeOpt;
// 8. Let matcher be GetOption(options, "localeMatcher", "string", «"lookup", "best fit"», "best fit").
String localeMatcher = intlStringOption(exec, options, vm.propertyNames->localeMatcher, { "lookup", "best fit" }, "localeMatcher must be either \"lookup\" or \"best fit\"", "best fit");
// 9. ReturnIfAbrupt(matcher).
RETURN_IF_EXCEPTION(scope, void());
// 10. Set opt.[[localeMatcher]] to matcher.
localeOpt.add(vm.propertyNames->localeMatcher.string(), localeMatcher);
// 11. Let localeData be the value of %DateTimeFormat%.[[localeData]].
// 12. Let r be ResolveLocale( %DateTimeFormat%.[[availableLocales]], requestedLocales, opt, %DateTimeFormat%.[[relevantExtensionKeys]], localeData).
const HashSet<String> availableLocales = exec.jsCallee()->globalObject()->intlDateTimeFormatAvailableLocales();
HashMap<String, String> resolved = resolveLocale(exec, availableLocales, requestedLocales, localeOpt, relevantExtensionKeys, WTF_ARRAY_LENGTH(relevantExtensionKeys), localeData);
// 13. Set dateTimeFormat.[[locale]] to the value of r.[[locale]].
m_locale = resolved.get(vm.propertyNames->locale.string());
if (m_locale.isEmpty()) {
throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat due to invalid locale"));
return;
}
// 14. Set dateTimeFormat.[[calendar]] to the value of r.[[ca]].
m_calendar = resolved.get(ASCIILiteral("ca"));
// Switch to preferred aliases.
if (m_calendar == "gregory")
m_calendar = ASCIILiteral("gregorian");
else if (m_calendar == "islamicc")
m_calendar = ASCIILiteral("islamic-civil");
else if (m_calendar == "ethioaa")
m_calendar = ASCIILiteral("ethiopic-amete-alem");
// 15. Set dateTimeFormat.[[numberingSystem]] to the value of r.[[nu]].
m_numberingSystem = resolved.get(ASCIILiteral("nu"));
// 16. Let dataLocale be the value of r.[[dataLocale]].
String dataLocale = resolved.get(ASCIILiteral("dataLocale"));
// 17. Let tz be Get(options, "timeZone").
JSValue tzValue = options->get(&exec, vm.propertyNames->timeZone);
// 18. ReturnIfAbrupt(tz).
RETURN_IF_EXCEPTION(scope, void());
// 19. If tz is not undefined, then
String tz;
if (!tzValue.isUndefined()) {
// a. Let tz be ToString(tz).
String originalTz = tzValue.toWTFString(&exec);
// b. ReturnIfAbrupt(tz).
RETURN_IF_EXCEPTION(scope, void());
// c. If the result of IsValidTimeZoneName(tz) is false, then i. Throw a RangeError exception.
// d. Let tz be CanonicalizeTimeZoneName(tz).
tz = canonicalizeTimeZoneName(originalTz);
if (tz.isNull()) {
throwRangeError(&exec, scope, String::format("invalid time zone: %s", originalTz.utf8().data()));
return;
}
} else {
// 20. Else,
// a. Let tz be DefaultTimeZone().
tz = defaultTimeZone();
}
// 21. Set dateTimeFormat.[[timeZone]] to tz.
m_timeZone = tz;
// 22. Let opt be a new Record.
// Rather than building a record, build the skeleton pattern.
StringBuilder skeletonBuilder;
// 23. For each row of Table 3, except the header row, do:
// a. Let prop be the name given in the Property column of the row.
// b. Let value be GetOption(options, prop, "string", «the strings given in the Values column of the row», undefined).
// c. ReturnIfAbrupt(value).
// d. Set opt.[[<prop>]] to value.
auto narrowShortLong = { "narrow", "short", "long" };
auto twoDigitNumeric = { "2-digit", "numeric" };
auto twoDigitNumericNarrowShortLong = { "2-digit", "numeric", "narrow", "short", "long" };
auto shortLong = { "short", "long" };
String weekday = intlStringOption(exec, options, vm.propertyNames->weekday, narrowShortLong, "weekday must be \"narrow\", \"short\", or \"long\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!weekday.isNull()) {
if (weekday == "narrow")
skeletonBuilder.appendLiteral("EEEEE");
else if (weekday == "short")
skeletonBuilder.appendLiteral("EEE");
else if (weekday == "long")
skeletonBuilder.appendLiteral("EEEE");
}
String era = intlStringOption(exec, options, vm.propertyNames->era, narrowShortLong, "era must be \"narrow\", \"short\", or \"long\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!era.isNull()) {
if (era == "narrow")
skeletonBuilder.appendLiteral("GGGGG");
else if (era == "short")
skeletonBuilder.appendLiteral("GGG");
else if (era == "long")
skeletonBuilder.appendLiteral("GGGG");
}
String year = intlStringOption(exec, options, vm.propertyNames->year, twoDigitNumeric, "year must be \"2-digit\" or \"numeric\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!year.isNull()) {
if (year == "2-digit")
skeletonBuilder.appendLiteral("yy");
else if (year == "numeric")
skeletonBuilder.append('y');
}
String month = intlStringOption(exec, options, vm.propertyNames->month, twoDigitNumericNarrowShortLong, "month must be \"2-digit\", \"numeric\", \"narrow\", \"short\", or \"long\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!month.isNull()) {
if (month == "2-digit")
skeletonBuilder.appendLiteral("MM");
else if (month == "numeric")
skeletonBuilder.append('M');
else if (month == "narrow")
skeletonBuilder.appendLiteral("MMMMM");
else if (month == "short")
skeletonBuilder.appendLiteral("MMM");
else if (month == "long")
skeletonBuilder.appendLiteral("MMMM");
}
String day = intlStringOption(exec, options, vm.propertyNames->day, twoDigitNumeric, "day must be \"2-digit\" or \"numeric\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!day.isNull()) {
if (day == "2-digit")
skeletonBuilder.appendLiteral("dd");
else if (day == "numeric")
skeletonBuilder.append('d');
}
String hour = intlStringOption(exec, options, vm.propertyNames->hour, twoDigitNumeric, "hour must be \"2-digit\" or \"numeric\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
// We need hour12 to make the hour skeleton pattern decision, so do this early.
// 32. Let hr12 be GetOption(options, "hour12", "boolean", undefined, undefined).
bool isHour12Undefined;
bool hr12 = intlBooleanOption(exec, options, vm.propertyNames->hour12, isHour12Undefined);
// 33. ReturnIfAbrupt(hr12).
RETURN_IF_EXCEPTION(scope, void());
if (!hour.isNull()) {
if (isHour12Undefined) {
if (hour == "2-digit")
skeletonBuilder.appendLiteral("jj");
else if (hour == "numeric")
skeletonBuilder.append('j');
} else if (hr12) {
if (hour == "2-digit")
skeletonBuilder.appendLiteral("hh");
else if (hour == "numeric")
skeletonBuilder.append('h');
} else {
if (hour == "2-digit")
skeletonBuilder.appendLiteral("HH");
else if (hour == "numeric")
skeletonBuilder.append('H');
}
}
String minute = intlStringOption(exec, options, vm.propertyNames->minute, twoDigitNumeric, "minute must be \"2-digit\" or \"numeric\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!minute.isNull()) {
if (minute == "2-digit")
skeletonBuilder.appendLiteral("mm");
else if (minute == "numeric")
skeletonBuilder.append('m');
}
String second = intlStringOption(exec, options, vm.propertyNames->second, twoDigitNumeric, "second must be \"2-digit\" or \"numeric\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!second.isNull()) {
if (second == "2-digit")
skeletonBuilder.appendLiteral("ss");
else if (second == "numeric")
skeletonBuilder.append('s');
}
String timeZoneName = intlStringOption(exec, options, vm.propertyNames->timeZoneName, shortLong, "timeZoneName must be \"short\" or \"long\"", nullptr);
RETURN_IF_EXCEPTION(scope, void());
if (!timeZoneName.isNull()) {
if (timeZoneName == "short")
skeletonBuilder.append('z');
else if (timeZoneName == "long")
skeletonBuilder.appendLiteral("zzzz");
}
// 24. Let dataLocaleData be Get(localeData, dataLocale).
// 25. Let formats be Get(dataLocaleData, "formats").
// 26. Let matcher be GetOption(options, "formatMatcher", "string", «"basic", "best fit"», "best fit").
intlStringOption(exec, options, vm.propertyNames->formatMatcher, { "basic", "best fit" }, "formatMatcher must be either \"basic\" or \"best fit\"", "best fit");
// 27. ReturnIfAbrupt(matcher).
RETURN_IF_EXCEPTION(scope, void());
// Always use ICU date format generator, rather than our own pattern list and matcher.
// Covers steps 28-36.
UErrorCode status = U_ZERO_ERROR;
UDateTimePatternGenerator* generator = udatpg_open(dataLocale.utf8().data(), &status);
if (U_FAILURE(status)) {
throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
return;
}
String skeleton = skeletonBuilder.toString();
StringView skeletonView(skeleton);
Vector<UChar, 32> patternBuffer(32);
status = U_ZERO_ERROR;
auto patternLength = udatpg_getBestPattern(generator, skeletonView.upconvertedCharacters(), skeletonView.length(), patternBuffer.data(), patternBuffer.size(), &status);
if (status == U_BUFFER_OVERFLOW_ERROR) {
status = U_ZERO_ERROR;
patternBuffer.grow(patternLength);
udatpg_getBestPattern(generator, skeletonView.upconvertedCharacters(), skeletonView.length(), patternBuffer.data(), patternLength, &status);
}
udatpg_close(generator);
if (U_FAILURE(status)) {
throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
return;
}
StringView pattern(patternBuffer.data(), patternLength);
setFormatsFromPattern(pattern);
status = U_ZERO_ERROR;
StringView timeZoneView(m_timeZone);
m_dateFormat = std::unique_ptr<UDateFormat, UDateFormatDeleter>(udat_open(UDAT_PATTERN, UDAT_PATTERN, m_locale.utf8().data(), timeZoneView.upconvertedCharacters(), timeZoneView.length(), pattern.upconvertedCharacters(), pattern.length(), &status));
if (U_FAILURE(status)) {
throwTypeError(&exec, scope, ASCIILiteral("failed to initialize DateTimeFormat"));
return;
}
// 37. Set dateTimeFormat.[[boundFormat]] to undefined.
// Already undefined.
// 38. Set dateTimeFormat.[[initializedDateTimeFormat]] to true.
m_initializedDateTimeFormat = true;
// 39. Return dateTimeFormat.
}
