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Issue #2046 - Move Intl.DateTimeFormat functionality into builtin/intl/DateTimeFormat.*

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This commit is contained in:
Martok 2023-02-16 00:14:14 +01:00 • committed by roytam1
commit c981fb13ea
6 changed files with 965 additions and 880 deletions
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785
js/src/builtin/Intl.cpp
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@ -24,10 +24,10 @@
#include "builtin/intl/Collator.h"
#include "builtin/intl/CommonFunctions.h"
#include "builtin/intl/DateTimeFormat.h"
#include "builtin/intl/ICUHeader.h"
#include "builtin/intl/NumberFormat.h"
#include "builtin/intl/ScopedICUObject.h"
#include "builtin/intl/SharedIntlData.h"
#include "ds/Sort.h"
#include "vm/DateTime.h"
#include "vm/GlobalObject.h"
@ -45,796 +45,13 @@ using namespace js;
using mozilla::AssertedCast;
using mozilla::IsFinite;
using mozilla::IsNegativeZero;
using mozilla::PodCopy;
using js::intl::CallICU;
using js::intl::GetAvailableLocales;
using js::intl::IcuLocale;
using js::intl::INITIAL_CHAR_BUFFER_SIZE;
using js::intl::SharedIntlData;
using js::intl::StringsAreEqual;
/******************** DateTimeFormat ********************/
static void dateTimeFormat_finalize(FreeOp* fop, JSObject* obj);
static const uint32_t UDATE_FORMAT_SLOT = 0;
static const uint32_t DATE_TIME_FORMAT_SLOTS_COUNT = 1;
static const ClassOps DateTimeFormatClassOps = {
nullptr, /* addProperty */
nullptr, /* delProperty */
nullptr, /* getProperty */
nullptr, /* setProperty */
nullptr, /* enumerate */
nullptr, /* resolve */
nullptr, /* mayResolve */
dateTimeFormat_finalize
};
static const Class DateTimeFormatClass = {
js_Object_str,
JSCLASS_HAS_RESERVED_SLOTS(DATE_TIME_FORMAT_SLOTS_COUNT) |
JSCLASS_FOREGROUND_FINALIZE,
&DateTimeFormatClassOps
};
#if JS_HAS_TOSOURCE
static bool
dateTimeFormat_toSource(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
args.rval().setString(cx->names().DateTimeFormat);
return true;
}
#endif
static const JSFunctionSpec dateTimeFormat_static_methods[] = {
JS_SELF_HOSTED_FN("supportedLocalesOf", "Intl_DateTimeFormat_supportedLocalesOf", 1, 0),
JS_FS_END
};
static const JSFunctionSpec dateTimeFormat_methods[] = {
JS_SELF_HOSTED_FN("resolvedOptions", "Intl_DateTimeFormat_resolvedOptions", 0, 0),
JS_SELF_HOSTED_FN("formatToParts", "Intl_DateTimeFormat_formatToParts", 0, 0),
#if JS_HAS_TOSOURCE
JS_FN(js_toSource_str, dateTimeFormat_toSource, 0, 0),
#endif
JS_FS_END
};
/**
* 12.2.1 Intl.DateTimeFormat([ locales [, options]])
*
* ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b
*/
static bool
DateTimeFormat(JSContext* cx, const CallArgs& args, bool construct)
{
RootedObject obj(cx);
// We're following ECMA-402 1st Edition when DateTimeFormat is called
// because of backward compatibility issues.
// See https://github.com/tc39/ecma402/issues/57
if (!construct) {
// ES Intl 1st ed., 12.1.2.1 step 3
JSObject* intl = GlobalObject::getOrCreateIntlObject(cx, cx->global());
if (!intl)
return false;
RootedValue self(cx, args.thisv());
if (!self.isUndefined() && (!self.isObject() || self.toObject() != *intl)) {
// ES Intl 1st ed., 12.1.2.1 step 4
obj = ToObject(cx, self);
if (!obj)
return false;
// ES Intl 1st ed., 12.1.2.1 step 5
bool extensible;
if (!IsExtensible(cx, obj, &extensible))
return false;
if (!extensible)
return Throw(cx, obj, JSMSG_OBJECT_NOT_EXTENSIBLE);
} else {
// ES Intl 1st ed., 12.1.2.1 step 3.a
construct = true;
}
}
if (construct) {
// Step 2 (Inlined 9.1.14, OrdinaryCreateFromConstructor).
RootedObject proto(cx);
if (args.isConstructing() && !GetPrototypeFromCallableConstructor(cx, args, &proto))
return false;
if (!proto) {
proto = GlobalObject::getOrCreateDateTimeFormatPrototype(cx, cx->global());
if (!proto)
return false;
}
obj = NewObjectWithGivenProto(cx, &DateTimeFormatClass, proto);
if (!obj)
return false;
obj->as<NativeObject>().setReservedSlot(UDATE_FORMAT_SLOT, PrivateValue(nullptr));
}
RootedValue locales(cx, args.length() > 0 ? args[0] : UndefinedValue());
RootedValue options(cx, args.length() > 1 ? args[1] : UndefinedValue());
// Step 3.
if (!intl::InitializeObject(cx, obj, cx->names().InitializeDateTimeFormat, locales, options))
return false;
args.rval().setObject(*obj);
return true;
}
static bool
DateTimeFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
return DateTimeFormat(cx, args, args.isConstructing());
}
bool
js::intl_DateTimeFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
MOZ_ASSERT(!args.isConstructing());
// intl_DateTimeFormat is an intrinsic for self-hosted JavaScript, so it
// cannot be used with "new", but it still has to be treated as a
// constructor.
return DateTimeFormat(cx, args, true);
}
static void
dateTimeFormat_finalize(FreeOp* fop, JSObject* obj)
{
MOZ_ASSERT(fop->onMainThread());
// This is-undefined check shouldn't be necessary, but for internal
// brokenness in object allocation code. For the moment, hack around it by
// explicitly guarding against the possibility of the reserved slot not
// containing a private. See bug 949220.
const Value& slot = obj->as<NativeObject>().getReservedSlot(UDATE_FORMAT_SLOT);
if (!slot.isUndefined()) {
if (UDateFormat* df = static_cast<UDateFormat*>(slot.toPrivate()))
udat_close(df);
}
}
static JSObject*
CreateDateTimeFormatPrototype(JSContext* cx, HandleObject Intl, Handle<GlobalObject*> global)
{
RootedFunction ctor(cx);
ctor = GlobalObject::createConstructor(cx, &DateTimeFormat, cx->names().DateTimeFormat, 0);
if (!ctor)
return nullptr;
RootedNativeObject proto(cx, GlobalObject::createBlankPrototype(cx, global,
&DateTimeFormatClass));
if (!proto)
return nullptr;
proto->setReservedSlot(UDATE_FORMAT_SLOT, PrivateValue(nullptr));
if (!LinkConstructorAndPrototype(cx, ctor, proto))
return nullptr;
// 12.2.2
if (!JS_DefineFunctions(cx, ctor, dateTimeFormat_static_methods))
return nullptr;
// 12.3.2 and 12.3.3
if (!JS_DefineFunctions(cx, proto, dateTimeFormat_methods))
return nullptr;
// Install a getter for DateTimeFormat.prototype.format that returns a
// formatting function bound to a specified DateTimeFormat object (suitable
// for passing to methods like Array.prototype.map).
RootedValue getter(cx);
if (!GlobalObject::getIntrinsicValue(cx, cx->global(), cx->names().DateTimeFormatFormatGet,
&getter))
{
return nullptr;
}
if (!DefineProperty(cx, proto, cx->names().format, UndefinedHandleValue,
JS_DATA_TO_FUNC_PTR(JSGetterOp, &getter.toObject()),
nullptr, JSPROP_GETTER | JSPROP_SHARED))
{
return nullptr;
}
RootedValue options(cx);
if (!intl::CreateDefaultOptions(cx, &options))
return nullptr;
// 12.2.1 and 12.3
if (!intl::InitializeObject(cx, proto, cx->names().InitializeDateTimeFormat, UndefinedHandleValue,
options))
{
return nullptr;
}
// 8.1
RootedValue ctorValue(cx, ObjectValue(*ctor));
if (!DefineProperty(cx, Intl, cx->names().DateTimeFormat, ctorValue, nullptr, nullptr, 0))
return nullptr;
return proto;
}
bool
js::intl_DateTimeFormat_availableLocales(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
RootedValue result(cx);
if (!GetAvailableLocales(cx, udat_countAvailable, udat_getAvailable, &result))
return false;
args.rval().set(result);
return true;
}
// ICU returns old-style keyword values; map them to BCP 47 equivalents
// (see http://bugs.icu-project.org/trac/ticket/9620).
static const char*
bcp47CalendarName(const char* icuName)
{
if (StringsAreEqual(icuName, "ethiopic-amete-alem"))
return "ethioaa";
if (StringsAreEqual(icuName, "gregorian"))
return "gregory";
if (StringsAreEqual(icuName, "islamic-civil"))
return "islamicc";
return icuName;
}
bool
js::intl_availableCalendars(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
JSAutoByteString locale(cx, args[0].toString());
if (!locale)
return false;
RootedObject calendars(cx, NewDenseEmptyArray(cx));
if (!calendars)
return false;
uint32_t index = 0;
// We need the default calendar for the locale as the first result.
UErrorCode status = U_ZERO_ERROR;
RootedString jscalendar(cx);
{
UCalendar* cal = ucal_open(nullptr, 0, locale.ptr(), UCAL_DEFAULT, &status);
// This correctly handles nullptr |cal| when opening failed.
ScopedICUObject<UCalendar, ucal_close> closeCalendar(cal);
const char* calendar = ucal_getType(cal, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
jscalendar = JS_NewStringCopyZ(cx, bcp47CalendarName(calendar));
if (!jscalendar)
return false;
}
RootedValue element(cx, StringValue(jscalendar));
if (!DefineElement(cx, calendars, index++, element))
return false;
// Now get the calendars that "would make a difference", i.e., not the default.
UEnumeration* values = ucal_getKeywordValuesForLocale("ca", locale.ptr(), false, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UEnumeration, uenum_close> toClose(values);
uint32_t count = uenum_count(values, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
for (; count > 0; count--) {
const char* calendar = uenum_next(values, nullptr, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
jscalendar = JS_NewStringCopyZ(cx, bcp47CalendarName(calendar));
if (!jscalendar)
return false;
element = StringValue(jscalendar);
if (!DefineElement(cx, calendars, index++, element))
return false;
}
args.rval().setObject(*calendars);
return true;
}
bool
js::intl_IsValidTimeZoneName(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
SharedIntlData& sharedIntlData = cx->sharedIntlData;
RootedString timeZone(cx, args[0].toString());
RootedString validatedTimeZone(cx);
if (!sharedIntlData.validateTimeZoneName(cx, timeZone, &validatedTimeZone))
return false;
if (validatedTimeZone)
args.rval().setString(validatedTimeZone);
else
args.rval().setNull();
return true;
}
bool
js::intl_canonicalizeTimeZone(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
SharedIntlData& sharedIntlData = cx->sharedIntlData;
// Some time zone names are canonicalized differently by ICU -- handle
// those first:
RootedString timeZone(cx, args[0].toString());
RootedString ianaTimeZone(cx);
if (!sharedIntlData.tryCanonicalizeTimeZoneConsistentWithIANA(cx, timeZone, &ianaTimeZone))
return false;
if (ianaTimeZone) {
args.rval().setString(ianaTimeZone);
return true;
}
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, timeZone))
return false;
mozilla::Range<const char16_t> tzchars = stableChars.twoByteRange();
JSString* str = CallICU(cx, [&tzchars](UChar* chars, uint32_t size, UErrorCode* status) {
return ucal_getCanonicalTimeZoneID(tzchars.begin().get(), tzchars.length(),
chars, size, nullptr, status);
});
if (!str)
return false;
args.rval().setString(str);
return true;
}
bool
js::intl_defaultTimeZone(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
// The current default might be stale, because JS::ResetTimeZone() doesn't
// immediately update ICU's default time zone. So perform an update if
// needed.
js::ResyncICUDefaultTimeZone();
JSString* str = CallICU(cx, ucal_getDefaultTimeZone);
if (!str)
return false;
args.rval().setString(str);
return true;
}
bool
js::intl_defaultTimeZoneOffset(JSContext* cx, unsigned argc, Value* vp) {
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
UErrorCode status = U_ZERO_ERROR;
const UChar* uTimeZone = nullptr;
int32_t uTimeZoneLength = 0;
const char* rootLocale = "";
UCalendar* cal = ucal_open(uTimeZone, uTimeZoneLength, rootLocale, UCAL_DEFAULT, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UCalendar, ucal_close> toClose(cal);
int32_t offset = ucal_get(cal, UCAL_ZONE_OFFSET, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
args.rval().setInt32(offset);
return true;
}
bool
js::intl_patternForSkeleton(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
MOZ_ASSERT(args[0].isString());
MOZ_ASSERT(args[1].isString());
JSAutoByteString locale(cx, args[0].toString());
if (!locale)
return false;
JSFlatString* skeletonFlat = args[1].toString()->ensureFlat(cx);
if (!skeletonFlat)
return false;
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, skeletonFlat))
return false;
mozilla::Range<const char16_t> skeletonChars = stableChars.twoByteRange();
uint32_t skeletonLen = u_strlen(Char16ToUChar(skeletonChars.begin().get()));
UErrorCode status = U_ZERO_ERROR;
UDateTimePatternGenerator* gen = udatpg_open(IcuLocale(locale.ptr()), &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UDateTimePatternGenerator, udatpg_close> toClose(gen);
JSString* str =
CallICU(cx, [gen, &skeletonChars, skeletonLen](UChar* chars, uint32_t size, UErrorCode* status) {
return udatpg_getBestPattern(gen, skeletonChars.begin().get(), skeletonLen,
chars, size, status);
});
if (!str)
return false;
args.rval().setString(str);
return true;
}
/**
* Returns a new UDateFormat with the locale and date-time formatting options
* of the given DateTimeFormat.
*/
static UDateFormat*
NewUDateFormat(JSContext* cx, HandleObject dateTimeFormat)
{
RootedValue value(cx);
RootedObject internals(cx, intl::GetInternalsObject(cx, dateTimeFormat));
if (!internals)
return nullptr;
if (!GetProperty(cx, internals, internals, cx->names().locale, &value))
return nullptr;
JSAutoByteString locale(cx, value.toString());
if (!locale)
return nullptr;
// We don't need to look at calendar and numberingSystem - they can only be
// set via the Unicode locale extension and are therefore already set on
// locale.
if (!GetProperty(cx, internals, internals, cx->names().timeZone, &value))
return nullptr;
AutoStableStringChars timeZoneChars(cx);
Rooted<JSFlatString*> timeZoneFlat(cx, value.toString()->ensureFlat(cx));
if (!timeZoneFlat || !timeZoneChars.initTwoByte(cx, timeZoneFlat))
return nullptr;
const UChar* uTimeZone = Char16ToUChar(timeZoneChars.twoByteRange().begin().get());
uint32_t uTimeZoneLength = u_strlen(uTimeZone);
if (!GetProperty(cx, internals, internals, cx->names().pattern, &value))
return nullptr;
AutoStableStringChars patternChars(cx);
Rooted<JSFlatString*> patternFlat(cx, value.toString()->ensureFlat(cx));
if (!patternFlat || !patternChars.initTwoByte(cx, patternFlat))
return nullptr;
const UChar* uPattern = Char16ToUChar(patternChars.twoByteRange().begin().get());
uint32_t uPatternLength = u_strlen(uPattern);
UErrorCode status = U_ZERO_ERROR;
UDateFormat* df =
udat_open(UDAT_PATTERN, UDAT_PATTERN, IcuLocale(locale.ptr()), uTimeZone, uTimeZoneLength,
uPattern, uPatternLength, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return nullptr;
}
// ECMAScript requires the Gregorian calendar to be used from the beginning
// of ECMAScript time.
UCalendar* cal = const_cast<UCalendar*>(udat_getCalendar(df));
ucal_setGregorianChange(cal, StartOfTime, &status);
// An error here means the calendar is not Gregorian, so we don't care.
return df;
}
static bool
intl_FormatDateTime(JSContext* cx, UDateFormat* df, double x, MutableHandleValue result)
{
if (!IsFinite(x)) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE);
return false;
}
JSString* str = CallICU(cx, [df, x](UChar* chars, int32_t size, UErrorCode* status) {
return udat_format(df, x, chars, size, nullptr, status);
});
if (!str)
return false;
result.setString(str);
return true;
}
using FieldType = ImmutablePropertyNamePtr JSAtomState::*;
static FieldType
GetFieldTypeForFormatField(UDateFormatField fieldName)
{
// See intl/icu/source/i18n/unicode/udat.h for a detailed field list. This
// switch is deliberately exhaustive: cases might have to be added/removed
// if this code is compiled with a different ICU with more
// UDateFormatField enum initializers. Please guard such cases with
// appropriate ICU version-testing #ifdefs, should cross-version divergence
// occur.
switch (fieldName) {
case UDAT_ERA_FIELD:
return &JSAtomState::era;
case UDAT_YEAR_FIELD:
case UDAT_YEAR_WOY_FIELD:
case UDAT_EXTENDED_YEAR_FIELD:
case UDAT_YEAR_NAME_FIELD:
return &JSAtomState::year;
case UDAT_MONTH_FIELD:
case UDAT_STANDALONE_MONTH_FIELD:
return &JSAtomState::month;
case UDAT_DATE_FIELD:
case UDAT_JULIAN_DAY_FIELD:
return &JSAtomState::day;
case UDAT_HOUR_OF_DAY1_FIELD:
case UDAT_HOUR_OF_DAY0_FIELD:
case UDAT_HOUR1_FIELD:
case UDAT_HOUR0_FIELD:
return &JSAtomState::hour;
case UDAT_MINUTE_FIELD:
return &JSAtomState::minute;
case UDAT_SECOND_FIELD:
return &JSAtomState::second;
case UDAT_DAY_OF_WEEK_FIELD:
case UDAT_STANDALONE_DAY_FIELD:
case UDAT_DOW_LOCAL_FIELD:
case UDAT_DAY_OF_WEEK_IN_MONTH_FIELD:
return &JSAtomState::weekday;
case UDAT_AM_PM_FIELD:
return &JSAtomState::dayPeriod;
case UDAT_TIMEZONE_FIELD:
return &JSAtomState::timeZoneName;
case UDAT_FRACTIONAL_SECOND_FIELD:
case UDAT_DAY_OF_YEAR_FIELD:
case UDAT_WEEK_OF_YEAR_FIELD:
case UDAT_WEEK_OF_MONTH_FIELD:
case UDAT_MILLISECONDS_IN_DAY_FIELD:
case UDAT_TIMEZONE_RFC_FIELD:
case UDAT_TIMEZONE_GENERIC_FIELD:
case UDAT_QUARTER_FIELD:
case UDAT_STANDALONE_QUARTER_FIELD:
case UDAT_TIMEZONE_SPECIAL_FIELD:
case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD:
case UDAT_TIMEZONE_ISO_FIELD:
case UDAT_TIMEZONE_ISO_LOCAL_FIELD:
#ifndef U_HIDE_INTERNAL_API
case UDAT_RELATED_YEAR_FIELD:
#endif
#ifndef U_HIDE_DRAFT_API
case UDAT_AM_PM_MIDNIGHT_NOON_FIELD:
case UDAT_FLEXIBLE_DAY_PERIOD_FIELD:
#endif
#ifndef U_HIDE_INTERNAL_API
case UDAT_TIME_SEPARATOR_FIELD:
#endif
// These fields are all unsupported.
return nullptr;
case UDAT_FIELD_COUNT:
MOZ_ASSERT_UNREACHABLE("format field sentinel value returned by "
"iterator!");
}
MOZ_ASSERT_UNREACHABLE("unenumerated, undocumented format field returned "
"by iterator");
return nullptr;
}
static bool
intl_FormatToPartsDateTime(JSContext* cx, UDateFormat* df, double x, MutableHandleValue result)
{
if (!IsFinite(x)) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE);
return false;
}
Vector<char16_t, INITIAL_CHAR_BUFFER_SIZE> chars(cx);
if (!chars.resize(INITIAL_CHAR_BUFFER_SIZE))
return false;
UErrorCode status = U_ZERO_ERROR;
UFieldPositionIterator* fpositer = ufieldpositer_open(&status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UFieldPositionIterator, ufieldpositer_close> toClose(fpositer);
RootedString overallResult(cx);
overallResult = CallICU(cx, [df, x, fpositer](UChar* chars, int32_t size, UErrorCode* status) {
return udat_formatForFields(df, x, chars, size, fpositer, status);
});
if (!overallResult)
return false;
RootedArrayObject partsArray(cx, NewDenseEmptyArray(cx));
if (!partsArray)
return false;
if (overallResult->length() == 0) {
// An empty string contains no parts, so avoid extra work below.
result.setObject(*partsArray);
return true;
}
size_t lastEndIndex = 0;
uint32_t partIndex = 0;
RootedObject singlePart(cx);
RootedValue partType(cx);
RootedValue val(cx);
auto AppendPart = [&](FieldType type, size_t beginIndex, size_t endIndex) {
singlePart = NewBuiltinClassInstance<PlainObject>(cx);
if (!singlePart)
return false;
partType = StringValue(cx->names().*type);
if (!DefineProperty(cx, singlePart, cx->names().type, partType))
return false;
JSLinearString* partSubstr =
NewDependentString(cx, overallResult, beginIndex, endIndex - beginIndex);
if (!partSubstr)
return false;
val = StringValue(partSubstr);
if (!DefineProperty(cx, singlePart, cx->names().value, val))
return false;
val = ObjectValue(*singlePart);
if (!DefineElement(cx, partsArray, partIndex, val))
return false;
lastEndIndex = endIndex;
partIndex++;
return true;
};
int32_t fieldInt, beginIndexInt, endIndexInt;
while ((fieldInt = ufieldpositer_next(fpositer, &beginIndexInt, &endIndexInt)) >= 0) {
MOZ_ASSERT(beginIndexInt >= 0);
MOZ_ASSERT(endIndexInt >= 0);
MOZ_ASSERT(beginIndexInt <= endIndexInt,
"field iterator returning invalid range");
size_t beginIndex(beginIndexInt);
size_t endIndex(endIndexInt);
// Technically this isn't guaranteed. But it appears true in pratice,
// and http://bugs.icu-project.org/trac/ticket/12024 is expected to
// correct the documentation lapse.
MOZ_ASSERT(lastEndIndex <= beginIndex,
"field iteration didn't return fields in order start to "
"finish as expected");
if (FieldType type = GetFieldTypeForFormatField(static_cast<UDateFormatField>(fieldInt))) {
if (lastEndIndex < beginIndex) {
if (!AppendPart(&JSAtomState::literal, lastEndIndex, beginIndex))
return false;
}
if (!AppendPart(type, beginIndex, endIndex))
return false;
}
}
// Append any final literal.
if (lastEndIndex < overallResult->length()) {
if (!AppendPart(&JSAtomState::literal, lastEndIndex, overallResult->length()))
return false;
}
result.setObject(*partsArray);
return true;
}
bool
js::intl_FormatDateTime(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 3);
MOZ_ASSERT(args[0].isObject());
MOZ_ASSERT(args[1].isNumber());
MOZ_ASSERT(args[2].isBoolean());
RootedObject dateTimeFormat(cx, &args[0].toObject());
// Obtain a UDateFormat object, cached if possible.
bool isDateTimeFormatInstance = dateTimeFormat->getClass() == &DateTimeFormatClass;
UDateFormat* df;
if (isDateTimeFormatInstance) {
void* priv =
dateTimeFormat->as<NativeObject>().getReservedSlot(UDATE_FORMAT_SLOT).toPrivate();
df = static_cast<UDateFormat*>(priv);
if (!df) {
df = NewUDateFormat(cx, dateTimeFormat);
if (!df)
return false;
dateTimeFormat->as<NativeObject>().setReservedSlot(UDATE_FORMAT_SLOT, PrivateValue(df));
}
} else {
// There's no good place to cache the ICU date-time format for an object
// that has been initialized as a DateTimeFormat but is not a
// DateTimeFormat instance. One possibility might be to add a
// DateTimeFormat instance as an internal property to each such object.
df = NewUDateFormat(cx, dateTimeFormat);
if (!df)
return false;
}
// Use the UDateFormat to actually format the time stamp.
RootedValue result(cx);
bool success = args[2].toBoolean()
? intl_FormatToPartsDateTime(cx, df, args[1].toNumber(), &result)
: intl_FormatDateTime(cx, df, args[1].toNumber(), &result);
if (!isDateTimeFormatInstance)
udat_close(df);
if (!success)
return false;
args.rval().set(result);
return true;
}
/**************** PluralRules *****************/
static void pluralRules_finalize(FreeOp* fop, JSObject* obj);

96
js/src/builtin/Intl.h
View file

@ -35,102 +35,6 @@ InitIntlClass(JSContext* cx, HandleObject obj);
* The following functions are for use by self-hosted code.
*/
/******************** DateTimeFormat ********************/
/**
* Returns a new instance of the standard built-in DateTimeFormat constructor.
* Self-hosted code cannot cache this constructor (as it does for others in
* Utilities.js) because it is initialized after self-hosted code is compiled.
*
* Usage: dateTimeFormat = intl_DateTimeFormat(locales, options)
*/
extern MOZ_MUST_USE bool
intl_DateTimeFormat(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns an object indicating the supported locales for date and time
* formatting by having a true-valued property for each such locale with the
* canonicalized language tag as the property name. The object has no
* prototype.
*
* Usage: availableLocales = intl_DateTimeFormat_availableLocales()
*/
extern MOZ_MUST_USE bool
intl_DateTimeFormat_availableLocales(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns an array with the calendar type identifiers per Unicode
* Technical Standard 35, Unicode Locale Data Markup Language, for the
* supported calendars for the given locale. The default calendar is
* element 0.
*
* Usage: calendars = intl_availableCalendars(locale)
*/
extern MOZ_MUST_USE bool
intl_availableCalendars(JSContext* cx, unsigned argc, Value* vp);
/**
* 6.4.1 IsValidTimeZoneName ( timeZone )
*
* Verifies that the given string is a valid time zone name. If it is a valid
* time zone name, its IANA time zone name is returned. Otherwise returns null.
*
* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
*
* Usage: ianaTimeZone = intl_IsValidTimeZoneName(timeZone)
*/
extern MOZ_MUST_USE bool
intl_IsValidTimeZoneName(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the canonicalized time zone name. Canonicalization resolves link
* names to their target time zones.
*
* Usage: ianaTimeZone = intl_canonicalizeTimeZone(timeZone)
*/
extern MOZ_MUST_USE bool
intl_canonicalizeTimeZone(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the default time zone name. The time zone name is not canonicalized.
*
* Usage: icuDefaultTimeZone = intl_defaultTimeZone()
*/
extern MOZ_MUST_USE bool
intl_defaultTimeZone(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the raw offset from GMT in milliseconds for the default time zone.
*
* Usage: defaultTimeZoneOffset = intl_defaultTimeZoneOffset()
*/
extern MOZ_MUST_USE bool
intl_defaultTimeZoneOffset(JSContext* cx, unsigned argc, Value* vp);
/**
* Return a pattern in the date-time format pattern language of Unicode
* Technical Standard 35, Unicode Locale Data Markup Language, for the
* best-fit date-time format pattern corresponding to skeleton for the
* given locale.
*
* Usage: pattern = intl_patternForSkeleton(locale, skeleton)
*/
extern MOZ_MUST_USE bool
intl_patternForSkeleton(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns a String value representing x (which must be a Number value)
* according to the effective locale and the formatting options of the
* given DateTimeFormat.
*
* Spec: ECMAScript Internationalization API Specification, 12.3.2.
*
* Usage: formatted = intl_FormatDateTime(dateTimeFormat, x)
*/
extern MOZ_MUST_USE bool
intl_FormatDateTime(JSContext* cx, unsigned argc, Value* vp);
/******************** PluralRules ********************/
/**

819
js/src/builtin/intl/DateTimeFormat.cpp Normal file
View file

@ -0,0 +1,819 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Intl.DateTimeFormat implementation. */
#include "builtin/intl/DateTimeFormat.h"
#include "mozilla/Assertions.h"
#include "mozilla/Range.h"
#include "jscntxt.h"
#include "jsfriendapi.h"
#include "builtin/intl/CommonFunctions.h"
#include "builtin/intl/ICUHeader.h"
#include "builtin/intl/ScopedICUObject.h"
#include "builtin/intl/SharedIntlData.h"
#include "builtin/IntlTimeZoneData.h"
#include "vm/GlobalObject.h"
#include "vm/Runtime.h"
#include "jsobjinlines.h"
#include "vm/NativeObject-inl.h"
using namespace js;
using mozilla::IsFinite;
using JS::ClippedTime;
using JS::TimeClip;
using js::intl::CallICU;
using js::intl::GetAvailableLocales;
using js::intl::IcuLocale;
using js::intl::INITIAL_CHAR_BUFFER_SIZE;
using js::intl::SharedIntlData;
using js::intl::StringsAreEqual;
/******************** DateTimeFormat ********************/
const ClassOps DateTimeFormatObject::classOps_ = {
nullptr, /* addProperty */
nullptr, /* delProperty */
nullptr, /* getProperty */
nullptr, /* setProperty */
nullptr, /* enumerate */
nullptr, /* resolve */
nullptr, /* mayResolve */
DateTimeFormatObject::finalize
};
const Class DateTimeFormatObject::class_ = {
js_Object_str,
JSCLASS_HAS_RESERVED_SLOTS(DateTimeFormatObject::SLOT_COUNT) |
JSCLASS_FOREGROUND_FINALIZE,
&DateTimeFormatObject::classOps_
};
#if JS_HAS_TOSOURCE
static bool
dateTimeFormat_toSource(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
args.rval().setString(cx->names().DateTimeFormat);
return true;
}
#endif
static const JSFunctionSpec dateTimeFormat_static_methods[] = {
JS_SELF_HOSTED_FN("supportedLocalesOf", "Intl_DateTimeFormat_supportedLocalesOf", 1, 0),
JS_FS_END
};
static const JSFunctionSpec dateTimeFormat_methods[] = {
JS_SELF_HOSTED_FN("resolvedOptions", "Intl_DateTimeFormat_resolvedOptions", 0, 0),
JS_SELF_HOSTED_FN("formatToParts", "Intl_DateTimeFormat_formatToParts", 0, 0),
#if JS_HAS_TOSOURCE
JS_FN(js_toSource_str, dateTimeFormat_toSource, 0, 0),
#endif
JS_FS_END
};
/**
* 12.2.1 Intl.DateTimeFormat([ locales [, options]])
*
* ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b
*/
static bool
DateTimeFormat(JSContext* cx, const CallArgs& args, bool construct)
{
RootedObject obj(cx);
// We're following ECMA-402 1st Edition when DateTimeFormat is called
// because of backward compatibility issues.
// See https://github.com/tc39/ecma402/issues/57
if (!construct) {
// ES Intl 1st ed., 12.1.2.1 step 3
JSObject* intl = GlobalObject::getOrCreateIntlObject(cx, cx->global());
if (!intl)
return false;
RootedValue self(cx, args.thisv());
if (!self.isUndefined() && (!self.isObject() || self.toObject() != *intl)) {
// ES Intl 1st ed., 12.1.2.1 step 4
obj = ToObject(cx, self);
if (!obj)
return false;
// ES Intl 1st ed., 12.1.2.1 step 5
bool extensible;
if (!IsExtensible(cx, obj, &extensible))
return false;
if (!extensible)
return Throw(cx, obj, JSMSG_OBJECT_NOT_EXTENSIBLE);
} else {
// ES Intl 1st ed., 12.1.2.1 step 3.a
construct = true;
}
}
if (construct) {
// Step 2 (Inlined 9.1.14, OrdinaryCreateFromConstructor).
RootedObject proto(cx);
if (args.isConstructing() && !GetPrototypeFromCallableConstructor(cx, args, &proto))
return false;
if (!proto) {
proto = GlobalObject::getOrCreateDateTimeFormatPrototype(cx, cx->global());
if (!proto)
return false;
}
obj = NewObjectWithGivenProto<DateTimeFormatObject>(cx, proto);
if (!obj)
return false;
obj->as<NativeObject>().setReservedSlot(DateTimeFormatObject::INTERNALS_SLOT, NullValue());
obj->as<NativeObject>().setReservedSlot(DateTimeFormatObject::UDATE_FORMAT_SLOT, PrivateValue(nullptr));
}
RootedValue locales(cx, args.length() > 0 ? args[0] : UndefinedValue());
RootedValue options(cx, args.length() > 1 ? args[1] : UndefinedValue());
// Step 3.
if (!intl::InitializeObject(cx, obj, cx->names().InitializeDateTimeFormat, locales, options))
return false;
args.rval().setObject(*obj);
return true;
}
static bool
DateTimeFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
return DateTimeFormat(cx, args, args.isConstructing());
}
bool
js::intl_DateTimeFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
MOZ_ASSERT(!args.isConstructing());
// intl_DateTimeFormat is an intrinsic for self-hosted JavaScript, so it
// cannot be used with "new", but it still has to be treated as a
// constructor.
return DateTimeFormat(cx, args, true);
}
void
js::DateTimeFormatObject::finalize(FreeOp* fop, JSObject* obj)
{
MOZ_ASSERT(fop->onMainThread());
// This is-undefined check shouldn't be necessary, but for internal
// brokenness in object allocation code. For the moment, hack around it by
// explicitly guarding against the possibility of the reserved slot not
// containing a private. See bug 949220.
const Value& slot = obj->as<DateTimeFormatObject>().getReservedSlot(DateTimeFormatObject::UDATE_FORMAT_SLOT);
if (!slot.isUndefined()) {
if (UDateFormat* df = static_cast<UDateFormat*>(slot.toPrivate()))
udat_close(df);
}
}
JSObject*
js::CreateDateTimeFormatPrototype(JSContext* cx, HandleObject Intl, Handle<GlobalObject*> global)
{
RootedFunction ctor(cx);
ctor = GlobalObject::createConstructor(cx, &DateTimeFormat, cx->names().DateTimeFormat, 0);
if (!ctor)
return nullptr;
RootedNativeObject proto(cx, GlobalObject::createBlankPrototype(cx, global,
&DateTimeFormatObject::class_));
if (!proto)
return nullptr;
proto->setReservedSlot(DateTimeFormatObject::UDATE_FORMAT_SLOT, PrivateValue(nullptr));
if (!LinkConstructorAndPrototype(cx, ctor, proto))
return nullptr;
// 12.2.2
if (!JS_DefineFunctions(cx, ctor, dateTimeFormat_static_methods))
return nullptr;
// 12.3.2 and 12.3.3
if (!JS_DefineFunctions(cx, proto, dateTimeFormat_methods))
return nullptr;
// Install a getter for DateTimeFormat.prototype.format that returns a
// formatting function bound to a specified DateTimeFormat object (suitable
// for passing to methods like Array.prototype.map).
RootedValue getter(cx);
if (!GlobalObject::getIntrinsicValue(cx, cx->global(), cx->names().DateTimeFormatFormatGet,
&getter))
{
return nullptr;
}
if (!DefineProperty(cx, proto, cx->names().format, UndefinedHandleValue,
JS_DATA_TO_FUNC_PTR(JSGetterOp, &getter.toObject()),
nullptr, JSPROP_GETTER | JSPROP_SHARED))
{
return nullptr;
}
RootedValue options(cx);
if (!intl::CreateDefaultOptions(cx, &options))
return nullptr;
// 12.2.1 and 12.3
if (!intl::InitializeObject(cx, proto, cx->names().InitializeDateTimeFormat, UndefinedHandleValue,
options))
{
return nullptr;
}
// 8.1
RootedValue ctorValue(cx, ObjectValue(*ctor));
if (!DefineProperty(cx, Intl, cx->names().DateTimeFormat, ctorValue, nullptr, nullptr, 0))
return nullptr;
return proto;
}
bool
js::intl_DateTimeFormat_availableLocales(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
RootedValue result(cx);
if (!GetAvailableLocales(cx, udat_countAvailable, udat_getAvailable, &result))
return false;
args.rval().set(result);
return true;
}
// ICU returns old-style keyword values; map them to BCP 47 equivalents
// (see http://bugs.icu-project.org/trac/ticket/9620).
static const char*
bcp47CalendarName(const char* icuName)
{
if (StringsAreEqual(icuName, "ethiopic-amete-alem"))
return "ethioaa";
if (StringsAreEqual(icuName, "gregorian"))
return "gregory";
if (StringsAreEqual(icuName, "islamic-civil"))
return "islamicc";
return icuName;
}
bool
js::intl_availableCalendars(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
JSAutoByteString locale(cx, args[0].toString());
if (!locale)
return false;
RootedObject calendars(cx, NewDenseEmptyArray(cx));
if (!calendars)
return false;
uint32_t index = 0;
// We need the default calendar for the locale as the first result.
UErrorCode status = U_ZERO_ERROR;
RootedString jscalendar(cx);
{
UCalendar* cal = ucal_open(nullptr, 0, locale.ptr(), UCAL_DEFAULT, &status);
// This correctly handles nullptr |cal| when opening failed.
ScopedICUObject<UCalendar, ucal_close> closeCalendar(cal);
const char* calendar = ucal_getType(cal, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
jscalendar = JS_NewStringCopyZ(cx, bcp47CalendarName(calendar));
if (!jscalendar)
return false;
}
RootedValue element(cx, StringValue(jscalendar));
if (!DefineElement(cx, calendars, index++, element))
return false;
// Now get the calendars that "would make a difference", i.e., not the default.
UEnumeration* values = ucal_getKeywordValuesForLocale("ca", locale.ptr(), false, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UEnumeration, uenum_close> toClose(values);
uint32_t count = uenum_count(values, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
for (; count > 0; count--) {
const char* calendar = uenum_next(values, nullptr, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
jscalendar = JS_NewStringCopyZ(cx, bcp47CalendarName(calendar));
if (!jscalendar)
return false;
element = StringValue(jscalendar);
if (!DefineElement(cx, calendars, index++, element))
return false;
}
args.rval().setObject(*calendars);
return true;
}
bool
js::intl_IsValidTimeZoneName(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
SharedIntlData& sharedIntlData = cx->sharedIntlData;
RootedString timeZone(cx, args[0].toString());
RootedString validatedTimeZone(cx);
if (!sharedIntlData.validateTimeZoneName(cx, timeZone, &validatedTimeZone))
return false;
if (validatedTimeZone)
args.rval().setString(validatedTimeZone);
else
args.rval().setNull();
return true;
}
bool
js::intl_canonicalizeTimeZone(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 1);
MOZ_ASSERT(args[0].isString());
SharedIntlData& sharedIntlData = cx->sharedIntlData;
// Some time zone names are canonicalized differently by ICU -- handle
// those first:
RootedString timeZone(cx, args[0].toString());
RootedString ianaTimeZone(cx);
if (!sharedIntlData.tryCanonicalizeTimeZoneConsistentWithIANA(cx, timeZone, &ianaTimeZone))
return false;
if (ianaTimeZone) {
args.rval().setString(ianaTimeZone);
return true;
}
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, timeZone))
return false;
mozilla::Range<const char16_t> tzchars = stableChars.twoByteRange();
JSString* str = CallICU(cx, [&tzchars](UChar* chars, uint32_t size, UErrorCode* status) {
return ucal_getCanonicalTimeZoneID(tzchars.begin().get(), tzchars.length(),
chars, size, nullptr, status);
});
if (!str)
return false;
args.rval().setString(str);
return true;
}
bool
js::intl_defaultTimeZone(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
// The current default might be stale, because JS::ResetTimeZone() doesn't
// immediately update ICU's default time zone. So perform an update if
// needed.
js::ResyncICUDefaultTimeZone();
JSString* str = CallICU(cx, ucal_getDefaultTimeZone);
if (!str)
return false;
args.rval().setString(str);
return true;
}
bool
js::intl_defaultTimeZoneOffset(JSContext* cx, unsigned argc, Value* vp) {
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 0);
UErrorCode status = U_ZERO_ERROR;
const UChar* uTimeZone = nullptr;
int32_t uTimeZoneLength = 0;
const char* rootLocale = "";
UCalendar* cal = ucal_open(uTimeZone, uTimeZoneLength, rootLocale, UCAL_DEFAULT, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UCalendar, ucal_close> toClose(cal);
int32_t offset = ucal_get(cal, UCAL_ZONE_OFFSET, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
args.rval().setInt32(offset);
return true;
}
bool
js::intl_patternForSkeleton(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
MOZ_ASSERT(args[0].isString());
MOZ_ASSERT(args[1].isString());
JSAutoByteString locale(cx, args[0].toString());
if (!locale)
return false;
JSFlatString* skeletonFlat = args[1].toString()->ensureFlat(cx);
if (!skeletonFlat)
return false;
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, skeletonFlat))
return false;
mozilla::Range<const char16_t> skeletonChars = stableChars.twoByteRange();
uint32_t skeletonLen = u_strlen(Char16ToUChar(skeletonChars.begin().get()));
UErrorCode status = U_ZERO_ERROR;
UDateTimePatternGenerator* gen = udatpg_open(IcuLocale(locale.ptr()), &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UDateTimePatternGenerator, udatpg_close> toClose(gen);
JSString* str =
CallICU(cx, [gen, &skeletonChars, skeletonLen](UChar* chars, uint32_t size, UErrorCode* status) {
return udatpg_getBestPattern(gen, skeletonChars.begin().get(), skeletonLen,
chars, size, status);
});
if (!str)
return false;
args.rval().setString(str);
return true;
}
/**
* Returns a new UDateFormat with the locale and date-time formatting options
* of the given DateTimeFormat.
*/
static UDateFormat*
NewUDateFormat(JSContext* cx, HandleObject dateTimeFormat)
{
RootedValue value(cx);
RootedObject internals(cx, intl::GetInternalsObject(cx, dateTimeFormat));
if (!internals)
return nullptr;
if (!GetProperty(cx, internals, internals, cx->names().locale, &value))
return nullptr;
JSAutoByteString locale(cx, value.toString());
if (!locale)
return nullptr;
// We don't need to look at calendar and numberingSystem - they can only be
// set via the Unicode locale extension and are therefore already set on
// locale.
if (!GetProperty(cx, internals, internals, cx->names().timeZone, &value))
return nullptr;
AutoStableStringChars timeZoneChars(cx);
Rooted<JSFlatString*> timeZoneFlat(cx, value.toString()->ensureFlat(cx));
if (!timeZoneFlat || !timeZoneChars.initTwoByte(cx, timeZoneFlat))
return nullptr;
const UChar* uTimeZone = Char16ToUChar(timeZoneChars.twoByteRange().begin().get());
uint32_t uTimeZoneLength = u_strlen(uTimeZone);
if (!GetProperty(cx, internals, internals, cx->names().pattern, &value))
return nullptr;
AutoStableStringChars patternChars(cx);
Rooted<JSFlatString*> patternFlat(cx, value.toString()->ensureFlat(cx));
if (!patternFlat || !patternChars.initTwoByte(cx, patternFlat))
return nullptr;
const UChar* uPattern = Char16ToUChar(patternChars.twoByteRange().begin().get());
uint32_t uPatternLength = u_strlen(uPattern);
UErrorCode status = U_ZERO_ERROR;
UDateFormat* df =
udat_open(UDAT_PATTERN, UDAT_PATTERN, IcuLocale(locale.ptr()), uTimeZone, uTimeZoneLength,
uPattern, uPatternLength, &status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return nullptr;
}
// ECMAScript requires the Gregorian calendar to be used from the beginning
// of ECMAScript time.
UCalendar* cal = const_cast<UCalendar*>(udat_getCalendar(df));
ucal_setGregorianChange(cal, StartOfTime, &status);
// An error here means the calendar is not Gregorian, so we don't care.
return df;
}
static bool
intl_FormatDateTime(JSContext* cx, UDateFormat* df, double x, MutableHandleValue result)
{
if (!IsFinite(x)) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE);
return false;
}
JSString* str = CallICU(cx, [df, x](UChar* chars, int32_t size, UErrorCode* status) {
return udat_format(df, x, chars, size, nullptr, status);
});
if (!str)
return false;
result.setString(str);
return true;
}
using FieldType = ImmutablePropertyNamePtr JSAtomState::*;
static FieldType
GetFieldTypeForFormatField(UDateFormatField fieldName)
{
// See intl/icu/source/i18n/unicode/udat.h for a detailed field list. This
// switch is deliberately exhaustive: cases might have to be added/removed
// if this code is compiled with a different ICU with more
// UDateFormatField enum initializers. Please guard such cases with
// appropriate ICU version-testing #ifdefs, should cross-version divergence
// occur.
switch (fieldName) {
case UDAT_ERA_FIELD:
return &JSAtomState::era;
case UDAT_YEAR_FIELD:
case UDAT_YEAR_WOY_FIELD:
case UDAT_EXTENDED_YEAR_FIELD:
case UDAT_YEAR_NAME_FIELD:
return &JSAtomState::year;
case UDAT_MONTH_FIELD:
case UDAT_STANDALONE_MONTH_FIELD:
return &JSAtomState::month;
case UDAT_DATE_FIELD:
case UDAT_JULIAN_DAY_FIELD:
return &JSAtomState::day;
case UDAT_HOUR_OF_DAY1_FIELD:
case UDAT_HOUR_OF_DAY0_FIELD:
case UDAT_HOUR1_FIELD:
case UDAT_HOUR0_FIELD:
return &JSAtomState::hour;
case UDAT_MINUTE_FIELD:
return &JSAtomState::minute;
case UDAT_SECOND_FIELD:
return &JSAtomState::second;
case UDAT_DAY_OF_WEEK_FIELD:
case UDAT_STANDALONE_DAY_FIELD:
case UDAT_DOW_LOCAL_FIELD:
case UDAT_DAY_OF_WEEK_IN_MONTH_FIELD:
return &JSAtomState::weekday;
case UDAT_AM_PM_FIELD:
return &JSAtomState::dayPeriod;
case UDAT_TIMEZONE_FIELD:
return &JSAtomState::timeZoneName;
case UDAT_FRACTIONAL_SECOND_FIELD:
case UDAT_DAY_OF_YEAR_FIELD:
case UDAT_WEEK_OF_YEAR_FIELD:
case UDAT_WEEK_OF_MONTH_FIELD:
case UDAT_MILLISECONDS_IN_DAY_FIELD:
case UDAT_TIMEZONE_RFC_FIELD:
case UDAT_TIMEZONE_GENERIC_FIELD:
case UDAT_QUARTER_FIELD:
case UDAT_STANDALONE_QUARTER_FIELD:
case UDAT_TIMEZONE_SPECIAL_FIELD:
case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD:
case UDAT_TIMEZONE_ISO_FIELD:
case UDAT_TIMEZONE_ISO_LOCAL_FIELD:
#ifndef U_HIDE_INTERNAL_API
case UDAT_RELATED_YEAR_FIELD:
#endif
#ifndef U_HIDE_DRAFT_API
case UDAT_AM_PM_MIDNIGHT_NOON_FIELD:
case UDAT_FLEXIBLE_DAY_PERIOD_FIELD:
#endif
#ifndef U_HIDE_INTERNAL_API
case UDAT_TIME_SEPARATOR_FIELD:
#endif
// These fields are all unsupported.
return nullptr;
case UDAT_FIELD_COUNT:
MOZ_ASSERT_UNREACHABLE("format field sentinel value returned by "
"iterator!");
}
MOZ_ASSERT_UNREACHABLE("unenumerated, undocumented format field returned "
"by iterator");
return nullptr;
}
static bool
intl_FormatToPartsDateTime(JSContext* cx, UDateFormat* df, double x, MutableHandleValue result)
{
if (!IsFinite(x)) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE);
return false;
}
Vector<char16_t, INITIAL_CHAR_BUFFER_SIZE> chars(cx);
if (!chars.resize(INITIAL_CHAR_BUFFER_SIZE))
return false;
UErrorCode status = U_ZERO_ERROR;
UFieldPositionIterator* fpositer = ufieldpositer_open(&status);
if (U_FAILURE(status)) {
intl::ReportInternalError(cx);
return false;
}
ScopedICUObject<UFieldPositionIterator, ufieldpositer_close> toClose(fpositer);
RootedString overallResult(cx);
overallResult = CallICU(cx, [df, x, fpositer](UChar* chars, int32_t size, UErrorCode* status) {
return udat_formatForFields(df, x, chars, size, fpositer, status);
});
if (!overallResult)
return false;
RootedArrayObject partsArray(cx, NewDenseEmptyArray(cx));
if (!partsArray)
return false;
if (overallResult->length() == 0) {
// An empty string contains no parts, so avoid extra work below.
result.setObject(*partsArray);
return true;
}
size_t lastEndIndex = 0;
uint32_t partIndex = 0;
RootedObject singlePart(cx);
RootedValue partType(cx);
RootedValue val(cx);
auto AppendPart = [&](FieldType type, size_t beginIndex, size_t endIndex) {
singlePart = NewBuiltinClassInstance<PlainObject>(cx);
if (!singlePart)
return false;
partType = StringValue(cx->names().*type);
if (!DefineProperty(cx, singlePart, cx->names().type, partType))
return false;
JSLinearString* partSubstr =
NewDependentString(cx, overallResult, beginIndex, endIndex - beginIndex);
if (!partSubstr)
return false;
val = StringValue(partSubstr);
if (!DefineProperty(cx, singlePart, cx->names().value, val))
return false;
val = ObjectValue(*singlePart);
if (!DefineElement(cx, partsArray, partIndex, val))
return false;
lastEndIndex = endIndex;
partIndex++;
return true;
};
int32_t fieldInt, beginIndexInt, endIndexInt;
while ((fieldInt = ufieldpositer_next(fpositer, &beginIndexInt, &endIndexInt)) >= 0) {
MOZ_ASSERT(beginIndexInt >= 0);
MOZ_ASSERT(endIndexInt >= 0);
MOZ_ASSERT(beginIndexInt <= endIndexInt,
"field iterator returning invalid range");
size_t beginIndex(beginIndexInt);
size_t endIndex(endIndexInt);
// Technically this isn't guaranteed. But it appears true in pratice,
// and http://bugs.icu-project.org/trac/ticket/12024 is expected to
// correct the documentation lapse.
MOZ_ASSERT(lastEndIndex <= beginIndex,
"field iteration didn't return fields in order start to "
"finish as expected");
if (FieldType type = GetFieldTypeForFormatField(static_cast<UDateFormatField>(fieldInt))) {
if (lastEndIndex < beginIndex) {
if (!AppendPart(&JSAtomState::literal, lastEndIndex, beginIndex))
return false;
}
if (!AppendPart(type, beginIndex, endIndex))
return false;
}
}
// Append any final literal.
if (lastEndIndex < overallResult->length()) {
if (!AppendPart(&JSAtomState::literal, lastEndIndex, overallResult->length()))
return false;
}
result.setObject(*partsArray);
return true;
}
bool
js::intl_FormatDateTime(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 3);
MOZ_ASSERT(args[0].isObject());
MOZ_ASSERT(args[1].isNumber());
MOZ_ASSERT(args[2].isBoolean());
RootedObject dateTimeFormat(cx, &args[0].toObject());
// Obtain a UDateFormat object, cached if possible.
bool isDateTimeFormatInstance = dateTimeFormat->getClass() == &DateTimeFormatObject::class_;
UDateFormat* df;
if (isDateTimeFormatInstance) {
void* priv =
dateTimeFormat->as<NativeObject>().getReservedSlot(DateTimeFormatObject::UDATE_FORMAT_SLOT).toPrivate();
df = static_cast<UDateFormat*>(priv);
if (!df) {
df = NewUDateFormat(cx, dateTimeFormat);
if (!df)
return false;
dateTimeFormat->as<NativeObject>().setReservedSlot(DateTimeFormatObject::UDATE_FORMAT_SLOT, PrivateValue(df));
}
} else {
// There's no good place to cache the ICU date-time format for an object
// that has been initialized as a DateTimeFormat but is not a
// DateTimeFormat instance. One possibility might be to add a
// DateTimeFormat instance as an internal property to each such object.
df = NewUDateFormat(cx, dateTimeFormat);
if (!df)
return false;
}
// Use the UDateFormat to actually format the time stamp.
RootedValue result(cx);
bool success = args[2].toBoolean()
? intl_FormatToPartsDateTime(cx, df, args[1].toNumber(), &result)
: intl_FormatDateTime(cx, df, args[1].toNumber(), &result);
if (!isDateTimeFormatInstance)
udat_close(df);
if (!success)
return false;
args.rval().set(result);
return true;
}

143
js/src/builtin/intl/DateTimeFormat.h Normal file
View file

@ -0,0 +1,143 @@
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef builtin_intl_DateTimeFormat_h
#define builtin_intl_DateTimeFormat_h
#include "mozilla/Attributes.h"
#include "builtin/intl/CommonFunctions.h"
#include "builtin/SelfHostingDefines.h"
#include "js/Class.h"
#include "js/RootingAPI.h"
#include "vm/NativeObject.h"
namespace js {
class FreeOp;
class GlobalObject;
/******************** DateTimeFormat ********************/
class DateTimeFormatObject : public NativeObject
{
public:
static const Class class_;
static constexpr uint32_t INTERNALS_SLOT = 0;
static constexpr uint32_t UDATE_FORMAT_SLOT = 1;
static constexpr uint32_t SLOT_COUNT = 2;
static_assert(INTERNALS_SLOT == INTL_INTERNALS_OBJECT_SLOT,
"INTERNALS_SLOT must match self-hosting define for internals object slot");
private:
static const ClassOps classOps_;
static void finalize(FreeOp* fop, JSObject* obj);
};
extern JSObject*
CreateDateTimeFormatPrototype(JSContext* cx, JS::Handle<JSObject*> Intl,
JS::Handle<GlobalObject*> global);
/**
* Returns a new instance of the standard built-in DateTimeFormat constructor.
* Self-hosted code cannot cache this constructor (as it does for others in
* Utilities.js) because it is initialized after self-hosted code is compiled.
*
* Usage: dateTimeFormat = intl_DateTimeFormat(locales, options)
*/
extern MOZ_MUST_USE bool
intl_DateTimeFormat(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns an object indicating the supported locales for date and time
* formatting by having a true-valued property for each such locale with the
* canonicalized language tag as the property name. The object has no
* prototype.
*
* Usage: availableLocales = intl_DateTimeFormat_availableLocales()
*/
extern MOZ_MUST_USE bool
intl_DateTimeFormat_availableLocales(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns an array with the calendar type identifiers per Unicode
* Technical Standard 35, Unicode Locale Data Markup Language, for the
* supported calendars for the given locale. The default calendar is
* element 0.
*
* Usage: calendars = intl_availableCalendars(locale)
*/
extern MOZ_MUST_USE bool
intl_availableCalendars(JSContext* cx, unsigned argc, Value* vp);
/**
* 6.4.1 IsValidTimeZoneName ( timeZone )
*
* Verifies that the given string is a valid time zone name. If it is a valid
* time zone name, its IANA time zone name is returned. Otherwise returns null.
*
* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
*
* Usage: ianaTimeZone = intl_IsValidTimeZoneName(timeZone)
*/
extern MOZ_MUST_USE bool
intl_IsValidTimeZoneName(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the canonicalized time zone name. Canonicalization resolves link
* names to their target time zones.
*
* Usage: ianaTimeZone = intl_canonicalizeTimeZone(timeZone)
*/
extern MOZ_MUST_USE bool
intl_canonicalizeTimeZone(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the default time zone name. The time zone name is not canonicalized.
*
* Usage: icuDefaultTimeZone = intl_defaultTimeZone()
*/
extern MOZ_MUST_USE bool
intl_defaultTimeZone(JSContext* cx, unsigned argc, Value* vp);
/**
* Return the raw offset from GMT in milliseconds for the default time zone.
*
* Usage: defaultTimeZoneOffset = intl_defaultTimeZoneOffset()
*/
extern MOZ_MUST_USE bool
intl_defaultTimeZoneOffset(JSContext* cx, unsigned argc, Value* vp);
/**
* Return a pattern in the date-time format pattern language of Unicode
* Technical Standard 35, Unicode Locale Data Markup Language, for the
* best-fit date-time format pattern corresponding to skeleton for the
* given locale.
*
* Usage: pattern = intl_patternForSkeleton(locale, skeleton)
*/
extern MOZ_MUST_USE bool
intl_patternForSkeleton(JSContext* cx, unsigned argc, Value* vp);
/**
* Returns a String value representing x (which must be a Number value)
* according to the effective locale and the formatting options of the
* given DateTimeFormat.
*
* Spec: ECMAScript Internationalization API Specification, 12.3.2.
*
* Usage: formatted = intl_FormatDateTime(dateTimeFormat, x)
*/
extern MOZ_MUST_USE bool
intl_FormatDateTime(JSContext* cx, unsigned argc, Value* vp);
} // namespace js
#endif /* builtin_intl_DateTimeFormat_h */

1
js/src/moz.build
View file

@ -117,6 +117,7 @@ UNIFIED_SOURCES += [
'builtin/Intl.cpp',
'builtin/intl/Collator.cpp',
'builtin/intl/CommonFunctions.cpp',
'builtin/intl/DateTimeFormat.cpp',
'builtin/intl/NumberFormat.cpp',
'builtin/intl/SharedIntlData.cpp',
'builtin/MapObject.cpp',

1
js/src/vm/SelfHosting.cpp
View file

@ -24,6 +24,7 @@
#include "builtin/Intl.h"
#include "builtin/intl/Collator.h"
#include "builtin/intl/DateTimeFormat.h"
#include "builtin/intl/NumberFormat.h"
#include "builtin/MapObject.h"
#include "builtin/ModuleObject.h"