diff options
Diffstat (limited to 'js/src/builtin/intl/DateTimeFormat.cpp')
| -rw-r--r-- | js/src/builtin/intl/DateTimeFormat.cpp | 1567 |
1 files changed, 1567 insertions, 0 deletions
diff --git a/js/src/builtin/intl/DateTimeFormat.cpp b/js/src/builtin/intl/DateTimeFormat.cpp new file mode 100644 index 0000000000..8327a47422 --- /dev/null +++ b/js/src/builtin/intl/DateTimeFormat.cpp @@ -0,0 +1,1567 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * 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/intl/Calendar.h" +#include "mozilla/intl/DateIntervalFormat.h" +#include "mozilla/intl/DateTimeFormat.h" +#include "mozilla/intl/DateTimePart.h" +#include "mozilla/intl/Locale.h" +#include "mozilla/intl/TimeZone.h" +#include "mozilla/Range.h" +#include "mozilla/Span.h" + +#include "builtin/Array.h" +#include "builtin/intl/CommonFunctions.h" +#include "builtin/intl/FormatBuffer.h" +#include "builtin/intl/LanguageTag.h" +#include "builtin/intl/SharedIntlData.h" +#include "gc/GCContext.h" +#include "js/Date.h" +#include "js/experimental/Intl.h" // JS::AddMozDateTimeFormatConstructor +#include "js/friend/ErrorMessages.h" // js::GetErrorMessage, JSMSG_* +#include "js/GCAPI.h" +#include "js/PropertyAndElement.h" // JS_DefineFunctions, JS_DefineProperties +#include "js/PropertySpec.h" +#include "js/StableStringChars.h" +#include "vm/DateTime.h" +#include "vm/GlobalObject.h" +#include "vm/JSContext.h" +#include "vm/PlainObject.h" // js::PlainObject +#include "vm/Runtime.h" +#include "vm/WellKnownAtom.h" // js_*_str + +#include "vm/GeckoProfiler-inl.h" +#include "vm/JSObject-inl.h" +#include "vm/NativeObject-inl.h" + +using namespace js; + +using JS::AutoStableStringChars; +using JS::ClippedTime; +using JS::TimeClip; + +using js::intl::DateTimeFormatOptions; +using js::intl::FormatBuffer; +using js::intl::INITIAL_CHAR_BUFFER_SIZE; +using js::intl::SharedIntlData; + +const JSClassOps DateTimeFormatObject::classOps_ = { + nullptr, // addProperty + nullptr, // delProperty + nullptr, // enumerate + nullptr, // newEnumerate + nullptr, // resolve + nullptr, // mayResolve + DateTimeFormatObject::finalize, // finalize + nullptr, // call + nullptr, // construct + nullptr, // trace +}; + +const JSClass DateTimeFormatObject::class_ = { + "Intl.DateTimeFormat", + JSCLASS_HAS_RESERVED_SLOTS(DateTimeFormatObject::SLOT_COUNT) | + JSCLASS_HAS_CACHED_PROTO(JSProto_DateTimeFormat) | + JSCLASS_FOREGROUND_FINALIZE, + &DateTimeFormatObject::classOps_, &DateTimeFormatObject::classSpec_}; + +const JSClass& DateTimeFormatObject::protoClass_ = PlainObject::class_; + +static bool dateTimeFormat_toSource(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + args.rval().setString(cx->names().DateTimeFormat); + return true; +} + +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", 1, + 0), + JS_SELF_HOSTED_FN("formatRange", "Intl_DateTimeFormat_formatRange", 2, 0), + JS_SELF_HOSTED_FN("formatRangeToParts", + "Intl_DateTimeFormat_formatRangeToParts", 2, 0), + JS_FN(js_toSource_str, dateTimeFormat_toSource, 0, 0), + JS_FS_END}; + +static const JSPropertySpec dateTimeFormat_properties[] = { + JS_SELF_HOSTED_GET("format", "$Intl_DateTimeFormat_format_get", 0), + JS_STRING_SYM_PS(toStringTag, "Intl.DateTimeFormat", JSPROP_READONLY), + JS_PS_END}; + +static bool DateTimeFormat(JSContext* cx, unsigned argc, Value* vp); + +const ClassSpec DateTimeFormatObject::classSpec_ = { + GenericCreateConstructor<DateTimeFormat, 0, gc::AllocKind::FUNCTION>, + GenericCreatePrototype<DateTimeFormatObject>, + dateTimeFormat_static_methods, + nullptr, + dateTimeFormat_methods, + dateTimeFormat_properties, + nullptr, + ClassSpec::DontDefineConstructor}; + +/** + * 12.2.1 Intl.DateTimeFormat([ locales [, options]]) + * + * ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b + */ +static bool DateTimeFormat(JSContext* cx, const CallArgs& args, bool construct, + DateTimeFormatOptions dtfOptions) { + AutoJSConstructorProfilerEntry pseudoFrame(cx, "Intl.DateTimeFormat"); + + // Step 1 (Handled by OrdinaryCreateFromConstructor fallback code). + + // Step 2 (Inlined 9.1.14, OrdinaryCreateFromConstructor). + JSProtoKey protoKey = dtfOptions == DateTimeFormatOptions::Standard + ? JSProto_DateTimeFormat + : JSProto_Null; + RootedObject proto(cx); + if (!GetPrototypeFromBuiltinConstructor(cx, args, protoKey, &proto)) { + return false; + } + + Rooted<DateTimeFormatObject*> dateTimeFormat(cx); + dateTimeFormat = NewObjectWithClassProto<DateTimeFormatObject>(cx, proto); + if (!dateTimeFormat) { + return false; + } + + RootedValue thisValue( + cx, construct ? ObjectValue(*dateTimeFormat) : args.thisv()); + HandleValue locales = args.get(0); + HandleValue options = args.get(1); + + // Step 3. + return intl::LegacyInitializeObject( + cx, dateTimeFormat, cx->names().InitializeDateTimeFormat, thisValue, + locales, options, dtfOptions, args.rval()); +} + +static bool DateTimeFormat(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + return DateTimeFormat(cx, args, args.isConstructing(), + DateTimeFormatOptions::Standard); +} + +static bool MozDateTimeFormat(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + + // Don't allow to call mozIntl.DateTimeFormat as a function. That way we + // don't need to worry how to handle the legacy initialization semantics + // when applied on mozIntl.DateTimeFormat. + if (!ThrowIfNotConstructing(cx, args, "mozIntl.DateTimeFormat")) { + return false; + } + + return DateTimeFormat(cx, args, true, + DateTimeFormatOptions::EnableMozExtensions); +} + +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, DateTimeFormatOptions::Standard); +} + +void js::DateTimeFormatObject::finalize(JS::GCContext* gcx, JSObject* obj) { + MOZ_ASSERT(gcx->onMainThread()); + + auto* dateTimeFormat = &obj->as<DateTimeFormatObject>(); + mozilla::intl::DateTimeFormat* df = dateTimeFormat->getDateFormat(); + mozilla::intl::DateIntervalFormat* dif = + dateTimeFormat->getDateIntervalFormat(); + + if (df) { + intl::RemoveICUCellMemory( + gcx, obj, DateTimeFormatObject::UDateFormatEstimatedMemoryUse); + + delete df; + } + + if (dif) { + intl::RemoveICUCellMemory( + gcx, obj, DateTimeFormatObject::UDateIntervalFormatEstimatedMemoryUse); + + delete dif; + } +} + +bool JS::AddMozDateTimeFormatConstructor(JSContext* cx, + JS::Handle<JSObject*> intl) { + RootedObject ctor( + cx, GlobalObject::createConstructor(cx, MozDateTimeFormat, + cx->names().DateTimeFormat, 0)); + if (!ctor) { + return false; + } + + RootedObject proto( + cx, GlobalObject::createBlankPrototype<PlainObject>(cx, cx->global())); + if (!proto) { + return false; + } + + if (!LinkConstructorAndPrototype(cx, ctor, proto)) { + return false; + } + + // 12.3.2 + if (!JS_DefineFunctions(cx, ctor, dateTimeFormat_static_methods)) { + return false; + } + + // 12.4.4 and 12.4.5 + if (!JS_DefineFunctions(cx, proto, dateTimeFormat_methods)) { + return false; + } + + // 12.4.2 and 12.4.3 + if (!JS_DefineProperties(cx, proto, dateTimeFormat_properties)) { + return false; + } + + RootedValue ctorValue(cx, ObjectValue(*ctor)); + return DefineDataProperty(cx, intl, cx->names().DateTimeFormat, ctorValue, 0); +} + +static bool DefaultCalendar(JSContext* cx, const UniqueChars& locale, + MutableHandleValue rval) { + auto calendar = mozilla::intl::Calendar::TryCreate(locale.get()); + if (calendar.isErr()) { + intl::ReportInternalError(cx, calendar.unwrapErr()); + return false; + } + + auto type = calendar.unwrap()->GetBcp47Type(); + if (type.isErr()) { + intl::ReportInternalError(cx, type.unwrapErr()); + return false; + } + + JSString* str = NewStringCopy<CanGC>(cx, type.unwrap()); + if (!str) { + return false; + } + + rval.setString(str); + return true; +} + +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()); + + UniqueChars locale = intl::EncodeLocale(cx, args[0].toString()); + if (!locale) { + return false; + } + + RootedObject calendars(cx, NewDenseEmptyArray(cx)); + if (!calendars) { + return false; + } + + // We need the default calendar for the locale as the first result. + RootedValue defaultCalendar(cx); + if (!DefaultCalendar(cx, locale, &defaultCalendar)) { + return false; + } + + if (!NewbornArrayPush(cx, calendars, defaultCalendar)) { + return false; + } + + // Now get the calendars that "would make a difference", i.e., not the + // default. + auto keywords = + mozilla::intl::Calendar::GetBcp47KeywordValuesForLocale(locale.get()); + if (keywords.isErr()) { + intl::ReportInternalError(cx, keywords.unwrapErr()); + return false; + } + + for (auto keyword : keywords.unwrap()) { + if (keyword.isErr()) { + intl::ReportInternalError(cx); + return false; + } + + JSString* jscalendar = NewStringCopy<CanGC>(cx, keyword.unwrap()); + if (!jscalendar) { + return false; + } + if (!NewbornArrayPush(cx, calendars, StringValue(jscalendar))) { + return false; + } + } + + args.rval().setObject(*calendars); + return true; +} + +bool js::intl_defaultCalendar(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + MOZ_ASSERT(args.length() == 1); + MOZ_ASSERT(args[0].isString()); + + UniqueChars locale = intl::EncodeLocale(cx, args[0].toString()); + if (!locale) { + return false; + } + + return DefaultCalendar(cx, locale, args.rval()); +} + +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->runtime()->sharedIntlData.ref(); + + RootedString timeZone(cx, args[0].toString()); + Rooted<JSAtom*> validatedTimeZone(cx); + if (!sharedIntlData.validateTimeZoneName(cx, timeZone, &validatedTimeZone)) { + return false; + } + + if (validatedTimeZone) { + cx->markAtom(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->runtime()->sharedIntlData.ref(); + + // Some time zone names are canonicalized differently by ICU -- handle + // those first: + RootedString timeZone(cx, args[0].toString()); + Rooted<JSAtom*> ianaTimeZone(cx); + if (!sharedIntlData.tryCanonicalizeTimeZoneConsistentWithIANA( + cx, timeZone, &ianaTimeZone)) { + return false; + } + + if (ianaTimeZone) { + cx->markAtom(ianaTimeZone); + args.rval().setString(ianaTimeZone); + return true; + } + + AutoStableStringChars stableChars(cx); + if (!stableChars.initTwoByte(cx, timeZone)) { + return false; + } + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> canonicalTimeZone(cx); + auto result = mozilla::intl::TimeZone::GetCanonicalTimeZoneID( + stableChars.twoByteRange(), canonicalTimeZone); + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return false; + } + + JSString* str = canonicalTimeZone.toString(cx); + 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); + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> timeZone(cx); + auto result = + DateTimeInfo::timeZoneId(DateTimeInfo::shouldRFP(cx->realm()), timeZone); + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return false; + } + + JSString* str = timeZone.toString(cx); + 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); + + auto offset = + DateTimeInfo::getRawOffsetMs(DateTimeInfo::shouldRFP(cx->realm())); + if (offset.isErr()) { + intl::ReportInternalError(cx, offset.unwrapErr()); + return false; + } + + args.rval().setInt32(offset.unwrap()); + return true; +} + +bool js::intl_isDefaultTimeZone(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + MOZ_ASSERT(args.length() == 1); + MOZ_ASSERT(args[0].isString() || args[0].isUndefined()); + + // |undefined| is the default value when the Intl runtime caches haven't + // yet been initialized. Handle it the same way as a cache miss. + if (args[0].isUndefined()) { + args.rval().setBoolean(false); + return true; + } + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> chars(cx); + auto result = + DateTimeInfo::timeZoneId(DateTimeInfo::shouldRFP(cx->realm()), chars); + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return false; + } + + JSLinearString* str = args[0].toString()->ensureLinear(cx); + if (!str) { + return false; + } + + bool equals; + if (str->length() == chars.length()) { + JS::AutoCheckCannotGC nogc; + equals = + str->hasLatin1Chars() + ? EqualChars(str->latin1Chars(nogc), chars.data(), str->length()) + : EqualChars(str->twoByteChars(nogc), chars.data(), str->length()); + } else { + equals = false; + } + + args.rval().setBoolean(equals); + return true; +} + +enum class HourCycle { + // 12 hour cycle, from 0 to 11. + H11, + + // 12 hour cycle, from 1 to 12. + H12, + + // 24 hour cycle, from 0 to 23. + H23, + + // 24 hour cycle, from 1 to 24. + H24 +}; + +static UniqueChars DateTimeFormatLocale( + JSContext* cx, HandleObject internals, + mozilla::Maybe<mozilla::intl::DateTimeFormat::HourCycle> hourCycle = + mozilla::Nothing()) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, cx->names().locale, &value)) { + return nullptr; + } + + // ICU expects calendar, numberingSystem, and hourCycle as Unicode locale + // extensions on locale. + + mozilla::intl::Locale tag; + { + Rooted<JSLinearString*> locale(cx, value.toString()->ensureLinear(cx)); + if (!locale) { + return nullptr; + } + + if (!intl::ParseLocale(cx, locale, tag)) { + return nullptr; + } + } + + JS::RootedVector<intl::UnicodeExtensionKeyword> keywords(cx); + + if (!GetProperty(cx, internals, internals, cx->names().calendar, &value)) { + return nullptr; + } + + { + JSLinearString* calendar = value.toString()->ensureLinear(cx); + if (!calendar) { + return nullptr; + } + + if (!keywords.emplaceBack("ca", calendar)) { + return nullptr; + } + } + + if (!GetProperty(cx, internals, internals, cx->names().numberingSystem, + &value)) { + return nullptr; + } + + { + JSLinearString* numberingSystem = value.toString()->ensureLinear(cx); + if (!numberingSystem) { + return nullptr; + } + + if (!keywords.emplaceBack("nu", numberingSystem)) { + return nullptr; + } + } + + if (hourCycle) { + JSAtom* hourCycleStr; + switch (*hourCycle) { + case mozilla::intl::DateTimeFormat::HourCycle::H11: + hourCycleStr = cx->names().h11; + break; + case mozilla::intl::DateTimeFormat::HourCycle::H12: + hourCycleStr = cx->names().h12; + break; + case mozilla::intl::DateTimeFormat::HourCycle::H23: + hourCycleStr = cx->names().h23; + break; + case mozilla::intl::DateTimeFormat::HourCycle::H24: + hourCycleStr = cx->names().h24; + break; + } + + if (!keywords.emplaceBack("hc", hourCycleStr)) { + return nullptr; + } + } + + // |ApplyUnicodeExtensionToTag| applies the new keywords to the front of + // the Unicode extension subtag. We're then relying on ICU to follow RFC + // 6067, which states that any trailing keywords using the same key + // should be ignored. + if (!intl::ApplyUnicodeExtensionToTag(cx, tag, keywords)) { + return nullptr; + } + + FormatBuffer<char> buffer(cx); + if (auto result = tag.ToString(buffer); result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return nullptr; + } + return buffer.extractStringZ(); +} + +static bool AssignTextComponent( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::Text>* text) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "narrow")) { + *text = mozilla::Some(mozilla::intl::DateTimeFormat::Text::Narrow); + } else if (StringEqualsLiteral(string, "short")) { + *text = mozilla::Some(mozilla::intl::DateTimeFormat::Text::Short); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "long")); + *text = mozilla::Some(mozilla::intl::DateTimeFormat::Text::Long); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignNumericComponent( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::Numeric>* numeric) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "numeric")) { + *numeric = mozilla::Some(mozilla::intl::DateTimeFormat::Numeric::Numeric); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "2-digit")); + *numeric = + mozilla::Some(mozilla::intl::DateTimeFormat::Numeric::TwoDigit); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignMonthComponent( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::Month>* month) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "numeric")) { + *month = mozilla::Some(mozilla::intl::DateTimeFormat::Month::Numeric); + } else if (StringEqualsLiteral(string, "2-digit")) { + *month = mozilla::Some(mozilla::intl::DateTimeFormat::Month::TwoDigit); + } else if (StringEqualsLiteral(string, "long")) { + *month = mozilla::Some(mozilla::intl::DateTimeFormat::Month::Long); + } else if (StringEqualsLiteral(string, "short")) { + *month = mozilla::Some(mozilla::intl::DateTimeFormat::Month::Short); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "narrow")); + *month = mozilla::Some(mozilla::intl::DateTimeFormat::Month::Narrow); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignTimeZoneNameComponent( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::TimeZoneName>* tzName) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "long")) { + *tzName = + mozilla::Some(mozilla::intl::DateTimeFormat::TimeZoneName::Long); + } else if (StringEqualsLiteral(string, "short")) { + *tzName = + mozilla::Some(mozilla::intl::DateTimeFormat::TimeZoneName::Short); + } else if (StringEqualsLiteral(string, "shortOffset")) { + *tzName = mozilla::Some( + mozilla::intl::DateTimeFormat::TimeZoneName::ShortOffset); + } else if (StringEqualsLiteral(string, "longOffset")) { + *tzName = mozilla::Some( + mozilla::intl::DateTimeFormat::TimeZoneName::LongOffset); + } else if (StringEqualsLiteral(string, "shortGeneric")) { + *tzName = mozilla::Some( + mozilla::intl::DateTimeFormat::TimeZoneName::ShortGeneric); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "longGeneric")); + *tzName = mozilla::Some( + mozilla::intl::DateTimeFormat::TimeZoneName::LongGeneric); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignHourCycleComponent( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::HourCycle>* hourCycle) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "h11")) { + *hourCycle = mozilla::Some(mozilla::intl::DateTimeFormat::HourCycle::H11); + } else if (StringEqualsLiteral(string, "h12")) { + *hourCycle = mozilla::Some(mozilla::intl::DateTimeFormat::HourCycle::H12); + } else if (StringEqualsLiteral(string, "h23")) { + *hourCycle = mozilla::Some(mozilla::intl::DateTimeFormat::HourCycle::H23); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "h24")); + *hourCycle = mozilla::Some(mozilla::intl::DateTimeFormat::HourCycle::H24); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignHour12Component(JSContext* cx, HandleObject internals, + mozilla::Maybe<bool>* hour12) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, cx->names().hour12, &value)) { + return false; + } + if (value.isBoolean()) { + *hour12 = mozilla::Some(value.toBoolean()); + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +static bool AssignDateTimeLength( + JSContext* cx, HandleObject internals, Handle<PropertyName*> property, + mozilla::Maybe<mozilla::intl::DateTimeFormat::Style>* style) { + RootedValue value(cx); + if (!GetProperty(cx, internals, internals, property, &value)) { + return false; + } + + if (value.isString()) { + JSLinearString* string = value.toString()->ensureLinear(cx); + if (!string) { + return false; + } + if (StringEqualsLiteral(string, "full")) { + *style = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Full); + } else if (StringEqualsLiteral(string, "long")) { + *style = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Long); + } else if (StringEqualsLiteral(string, "medium")) { + *style = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Medium); + } else { + MOZ_ASSERT(StringEqualsLiteral(string, "short")); + *style = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Short); + } + } else { + MOZ_ASSERT(value.isUndefined()); + } + + return true; +} + +/** + * Returns a new mozilla::intl::DateTimeFormat with the locale and date-time + * formatting options of the given DateTimeFormat. + */ +static mozilla::intl::DateTimeFormat* NewDateTimeFormat( + JSContext* cx, Handle<DateTimeFormatObject*> dateTimeFormat) { + RootedValue value(cx); + + RootedObject internals(cx, intl::GetInternalsObject(cx, dateTimeFormat)); + if (!internals) { + return nullptr; + } + + UniqueChars locale = DateTimeFormatLocale(cx, internals); + if (!locale) { + return nullptr; + } + + if (!GetProperty(cx, internals, internals, cx->names().timeZone, &value)) { + return nullptr; + } + + AutoStableStringChars timeZone(cx); + if (!timeZone.initTwoByte(cx, value.toString())) { + return nullptr; + } + + mozilla::Range<const char16_t> timeZoneChars = timeZone.twoByteRange(); + + if (!GetProperty(cx, internals, internals, cx->names().pattern, &value)) { + return nullptr; + } + bool hasPattern = value.isString(); + + if (!GetProperty(cx, internals, internals, cx->names().timeStyle, &value)) { + return nullptr; + } + bool hasStyle = value.isString(); + if (!hasStyle) { + if (!GetProperty(cx, internals, internals, cx->names().dateStyle, &value)) { + return nullptr; + } + hasStyle = value.isString(); + } + + mozilla::UniquePtr<mozilla::intl::DateTimeFormat> df = nullptr; + if (hasPattern) { + // This is a DateTimeFormat defined by a pattern option. This is internal + // to Mozilla, and not part of the ECMA-402 API. + if (!GetProperty(cx, internals, internals, cx->names().pattern, &value)) { + return nullptr; + } + + AutoStableStringChars pattern(cx); + if (!pattern.initTwoByte(cx, value.toString())) { + return nullptr; + } + + auto dfResult = mozilla::intl::DateTimeFormat::TryCreateFromPattern( + mozilla::MakeStringSpan(locale.get()), pattern.twoByteRange(), + mozilla::Some(timeZoneChars)); + if (dfResult.isErr()) { + intl::ReportInternalError(cx, dfResult.unwrapErr()); + return nullptr; + } + + df = dfResult.unwrap(); + } else if (hasStyle) { + // This is a DateTimeFormat defined by a time style or date style. + mozilla::intl::DateTimeFormat::StyleBag style; + if (!AssignDateTimeLength(cx, internals, cx->names().timeStyle, + &style.time)) { + return nullptr; + } + if (!AssignDateTimeLength(cx, internals, cx->names().dateStyle, + &style.date)) { + return nullptr; + } + if (!AssignHourCycleComponent(cx, internals, cx->names().hourCycle, + &style.hourCycle)) { + return nullptr; + } + + if (!AssignHour12Component(cx, internals, &style.hour12)) { + return nullptr; + } + + SharedIntlData& sharedIntlData = cx->runtime()->sharedIntlData.ref(); + + mozilla::intl::DateTimePatternGenerator* gen = + sharedIntlData.getDateTimePatternGenerator(cx, locale.get()); + if (!gen) { + return nullptr; + } + auto dfResult = mozilla::intl::DateTimeFormat::TryCreateFromStyle( + mozilla::MakeStringSpan(locale.get()), style, gen, + mozilla::Some(timeZoneChars)); + if (dfResult.isErr()) { + intl::ReportInternalError(cx, dfResult.unwrapErr()); + return nullptr; + } + df = dfResult.unwrap(); + } else { + // This is a DateTimeFormat defined by a components bag. + mozilla::intl::DateTimeFormat::ComponentsBag bag; + + if (!AssignTextComponent(cx, internals, cx->names().era, &bag.era)) { + return nullptr; + } + if (!AssignNumericComponent(cx, internals, cx->names().year, &bag.year)) { + return nullptr; + } + if (!AssignMonthComponent(cx, internals, cx->names().month, &bag.month)) { + return nullptr; + } + if (!AssignNumericComponent(cx, internals, cx->names().day, &bag.day)) { + return nullptr; + } + if (!AssignTextComponent(cx, internals, cx->names().weekday, + &bag.weekday)) { + return nullptr; + } + if (!AssignNumericComponent(cx, internals, cx->names().hour, &bag.hour)) { + return nullptr; + } + if (!AssignNumericComponent(cx, internals, cx->names().minute, + &bag.minute)) { + return nullptr; + } + if (!AssignNumericComponent(cx, internals, cx->names().second, + &bag.second)) { + return nullptr; + } + if (!AssignTimeZoneNameComponent(cx, internals, cx->names().timeZoneName, + &bag.timeZoneName)) { + return nullptr; + } + if (!AssignHourCycleComponent(cx, internals, cx->names().hourCycle, + &bag.hourCycle)) { + return nullptr; + } + if (!AssignTextComponent(cx, internals, cx->names().dayPeriod, + &bag.dayPeriod)) { + return nullptr; + } + if (!AssignHour12Component(cx, internals, &bag.hour12)) { + return nullptr; + } + + if (!GetProperty(cx, internals, internals, + cx->names().fractionalSecondDigits, &value)) { + return nullptr; + } + if (value.isInt32()) { + bag.fractionalSecondDigits = mozilla::Some(value.toInt32()); + } else { + MOZ_ASSERT(value.isUndefined()); + } + + SharedIntlData& sharedIntlData = cx->runtime()->sharedIntlData.ref(); + auto* dtpg = sharedIntlData.getDateTimePatternGenerator(cx, locale.get()); + if (!dtpg) { + return nullptr; + } + + auto dfResult = mozilla::intl::DateTimeFormat::TryCreateFromComponents( + mozilla::MakeStringSpan(locale.get()), bag, dtpg, + mozilla::Some(timeZoneChars)); + if (dfResult.isErr()) { + intl::ReportInternalError(cx, dfResult.unwrapErr()); + return nullptr; + } + df = dfResult.unwrap(); + } + + // ECMAScript requires the Gregorian calendar to be used from the beginning + // of ECMAScript time. + df->SetStartTimeIfGregorian(StartOfTime); + + return df.release(); +} + +static mozilla::intl::DateTimeFormat* GetOrCreateDateTimeFormat( + JSContext* cx, Handle<DateTimeFormatObject*> dateTimeFormat) { + // Obtain a cached mozilla::intl::DateTimeFormat object. + mozilla::intl::DateTimeFormat* df = dateTimeFormat->getDateFormat(); + if (df) { + return df; + } + + df = NewDateTimeFormat(cx, dateTimeFormat); + if (!df) { + return nullptr; + } + dateTimeFormat->setDateFormat(df); + + intl::AddICUCellMemory(dateTimeFormat, + DateTimeFormatObject::UDateFormatEstimatedMemoryUse); + return df; +} + +template <typename T> +static bool SetResolvedProperty(JSContext* cx, HandleObject resolved, + Handle<PropertyName*> name, + mozilla::Maybe<T> intlProp) { + if (!intlProp) { + return true; + } + JSString* str = NewStringCopyZ<CanGC>( + cx, mozilla::intl::DateTimeFormat::ToString(*intlProp)); + if (!str) { + return false; + } + RootedValue value(cx, StringValue(str)); + return DefineDataProperty(cx, resolved, name, value); +} + +bool js::intl_resolveDateTimeFormatComponents(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].isObject()); + MOZ_ASSERT(args[2].isBoolean()); + + Rooted<DateTimeFormatObject*> dateTimeFormat(cx); + dateTimeFormat = &args[0].toObject().as<DateTimeFormatObject>(); + + RootedObject resolved(cx, &args[1].toObject()); + + bool includeDateTimeFields = args[2].toBoolean(); + + mozilla::intl::DateTimeFormat* df = + GetOrCreateDateTimeFormat(cx, dateTimeFormat); + if (!df) { + return false; + } + + auto result = df->ResolveComponents(); + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return false; + } + + mozilla::intl::DateTimeFormat::ComponentsBag components = result.unwrap(); + + // Map the resolved mozilla::intl::DateTimeFormat::ComponentsBag to the + // options object as returned by DateTimeFormat.prototype.resolvedOptions. + // + // Resolved options must match the ordering as defined in: + // https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype.resolvedoptions + + if (!SetResolvedProperty(cx, resolved, cx->names().hourCycle, + components.hourCycle)) { + return false; + } + + if (components.hour12) { + RootedValue value(cx, BooleanValue(*components.hour12)); + if (!DefineDataProperty(cx, resolved, cx->names().hour12, value)) { + return false; + } + } + + if (!includeDateTimeFields) { + args.rval().setUndefined(); + // Do not include date time fields. + return true; + } + + if (!SetResolvedProperty(cx, resolved, cx->names().weekday, + components.weekday)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().era, components.era)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().year, components.year)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().month, components.month)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().day, components.day)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().dayPeriod, + components.dayPeriod)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().hour, components.hour)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().minute, + components.minute)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().second, + components.second)) { + return false; + } + if (!SetResolvedProperty(cx, resolved, cx->names().timeZoneName, + components.timeZoneName)) { + return false; + } + + if (components.fractionalSecondDigits) { + RootedValue value(cx, Int32Value(*components.fractionalSecondDigits)); + if (!DefineDataProperty(cx, resolved, cx->names().fractionalSecondDigits, + value)) { + return false; + } + } + + args.rval().setUndefined(); + return true; +} + +static bool intl_FormatDateTime(JSContext* cx, + const mozilla::intl::DateTimeFormat* df, + ClippedTime x, MutableHandleValue result) { + MOZ_ASSERT(x.isValid()); + + FormatBuffer<char16_t, INITIAL_CHAR_BUFFER_SIZE> buffer(cx); + auto dfResult = df->TryFormat(x.toDouble(), buffer); + if (dfResult.isErr()) { + intl::ReportInternalError(cx, dfResult.unwrapErr()); + return false; + } + + JSString* str = buffer.toString(cx); + if (!str) { + return false; + } + + result.setString(str); + return true; +} + +using FieldType = js::ImmutableTenuredPtr<PropertyName*> JSAtomState::*; + +static FieldType GetFieldTypeForPartType(mozilla::intl::DateTimePartType type) { + switch (type) { + case mozilla::intl::DateTimePartType::Literal: + return &JSAtomState::literal; + case mozilla::intl::DateTimePartType::Era: + return &JSAtomState::era; + case mozilla::intl::DateTimePartType::Year: + return &JSAtomState::year; + case mozilla::intl::DateTimePartType::YearName: + return &JSAtomState::yearName; + case mozilla::intl::DateTimePartType::RelatedYear: + return &JSAtomState::relatedYear; + case mozilla::intl::DateTimePartType::Month: + return &JSAtomState::month; + case mozilla::intl::DateTimePartType::Day: + return &JSAtomState::day; + case mozilla::intl::DateTimePartType::Hour: + return &JSAtomState::hour; + case mozilla::intl::DateTimePartType::Minute: + return &JSAtomState::minute; + case mozilla::intl::DateTimePartType::Second: + return &JSAtomState::second; + case mozilla::intl::DateTimePartType::Weekday: + return &JSAtomState::weekday; + case mozilla::intl::DateTimePartType::DayPeriod: + return &JSAtomState::dayPeriod; + case mozilla::intl::DateTimePartType::TimeZoneName: + return &JSAtomState::timeZoneName; + case mozilla::intl::DateTimePartType::FractionalSecondDigits: + return &JSAtomState::fractionalSecond; + case mozilla::intl::DateTimePartType::Unknown: + return &JSAtomState::unknown; + } + + MOZ_CRASH( + "unenumerated, undocumented format field returned " + "by iterator"); +} + +static FieldType GetFieldTypeForPartSource( + mozilla::intl::DateTimePartSource source) { + switch (source) { + case mozilla::intl::DateTimePartSource::Shared: + return &JSAtomState::shared; + case mozilla::intl::DateTimePartSource::StartRange: + return &JSAtomState::startRange; + case mozilla::intl::DateTimePartSource::EndRange: + return &JSAtomState::endRange; + } + + MOZ_CRASH( + "unenumerated, undocumented format field returned " + "by iterator"); +} + +// A helper function to create an ArrayObject from DateTimePart objects. +// When hasNoSource is true, we don't need to create the ||Source|| property for +// the DateTimePart object. +static bool CreateDateTimePartArray( + JSContext* cx, mozilla::Span<const char16_t> formattedSpan, + bool hasNoSource, const mozilla::intl::DateTimePartVector& parts, + MutableHandleValue result) { + RootedString overallResult(cx, NewStringCopy<CanGC>(cx, formattedSpan)); + if (!overallResult) { + return false; + } + + Rooted<ArrayObject*> partsArray( + cx, NewDenseFullyAllocatedArray(cx, parts.length())); + if (!partsArray) { + return false; + } + partsArray->ensureDenseInitializedLength(0, parts.length()); + + if (overallResult->length() == 0) { + // An empty string contains no parts, so avoid extra work below. + result.setObject(*partsArray); + return true; + } + + RootedObject singlePart(cx); + RootedValue val(cx); + + size_t index = 0; + size_t beginIndex = 0; + for (const mozilla::intl::DateTimePart& part : parts) { + singlePart = NewPlainObject(cx); + if (!singlePart) { + return false; + } + + FieldType type = GetFieldTypeForPartType(part.mType); + val = StringValue(cx->names().*type); + if (!DefineDataProperty(cx, singlePart, cx->names().type, val)) { + return false; + } + + MOZ_ASSERT(part.mEndIndex > beginIndex); + JSLinearString* partStr = NewDependentString(cx, overallResult, beginIndex, + part.mEndIndex - beginIndex); + if (!partStr) { + return false; + } + val = StringValue(partStr); + if (!DefineDataProperty(cx, singlePart, cx->names().value, val)) { + return false; + } + + if (!hasNoSource) { + FieldType source = GetFieldTypeForPartSource(part.mSource); + val = StringValue(cx->names().*source); + if (!DefineDataProperty(cx, singlePart, cx->names().source, val)) { + return false; + } + } + + beginIndex = part.mEndIndex; + partsArray->initDenseElement(index++, ObjectValue(*singlePart)); + } + + MOZ_ASSERT(index == parts.length()); + MOZ_ASSERT(beginIndex == formattedSpan.size()); + result.setObject(*partsArray); + return true; +} + +static bool intl_FormatToPartsDateTime(JSContext* cx, + const mozilla::intl::DateTimeFormat* df, + ClippedTime x, bool hasNoSource, + MutableHandleValue result) { + MOZ_ASSERT(x.isValid()); + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> buffer(cx); + mozilla::intl::DateTimePartVector parts; + auto r = df->TryFormatToParts(x.toDouble(), buffer, parts); + if (r.isErr()) { + intl::ReportInternalError(cx, r.unwrapErr()); + return false; + } + + return CreateDateTimePartArray(cx, buffer, hasNoSource, parts, result); +} + +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()); + + Rooted<DateTimeFormatObject*> dateTimeFormat(cx); + dateTimeFormat = &args[0].toObject().as<DateTimeFormatObject>(); + + bool formatToParts = args[2].toBoolean(); + + ClippedTime x = TimeClip(args[1].toNumber()); + if (!x.isValid()) { + JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, + JSMSG_DATE_NOT_FINITE, "DateTimeFormat", + formatToParts ? "formatToParts" : "format"); + return false; + } + + mozilla::intl::DateTimeFormat* df = + GetOrCreateDateTimeFormat(cx, dateTimeFormat); + if (!df) { + return false; + } + + // Use the DateTimeFormat to actually format the time stamp. + return formatToParts ? intl_FormatToPartsDateTime( + cx, df, x, /* hasNoSource */ true, args.rval()) + : intl_FormatDateTime(cx, df, x, args.rval()); +} + +/** + * Returns a new DateIntervalFormat with the locale and date-time formatting + * options of the given DateTimeFormat. + */ +static mozilla::intl::DateIntervalFormat* NewDateIntervalFormat( + JSContext* cx, Handle<DateTimeFormatObject*> dateTimeFormat, + mozilla::intl::DateTimeFormat& mozDtf) { + RootedValue value(cx); + RootedObject internals(cx, intl::GetInternalsObject(cx, dateTimeFormat)); + if (!internals) { + return nullptr; + } + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> pattern(cx); + auto result = mozDtf.GetPattern(pattern); + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return nullptr; + } + + // Determine the hour cycle used in the resolved pattern. + mozilla::Maybe<mozilla::intl::DateTimeFormat::HourCycle> hcPattern = + mozilla::intl::DateTimeFormat::HourCycleFromPattern(pattern); + + UniqueChars locale = DateTimeFormatLocale(cx, internals, hcPattern); + if (!locale) { + return nullptr; + } + + if (!GetProperty(cx, internals, internals, cx->names().timeZone, &value)) { + return nullptr; + } + + AutoStableStringChars timeZone(cx); + if (!timeZone.initTwoByte(cx, value.toString())) { + return nullptr; + } + mozilla::Span<const char16_t> timeZoneChars = timeZone.twoByteRange(); + + FormatBuffer<char16_t, intl::INITIAL_CHAR_BUFFER_SIZE> skeleton(cx); + auto skelResult = mozDtf.GetOriginalSkeleton(skeleton); + if (skelResult.isErr()) { + intl::ReportInternalError(cx, skelResult.unwrapErr()); + return nullptr; + } + + auto dif = mozilla::intl::DateIntervalFormat::TryCreate( + mozilla::MakeStringSpan(locale.get()), skeleton, timeZoneChars); + + if (dif.isErr()) { + js::intl::ReportInternalError(cx, dif.unwrapErr()); + return nullptr; + } + + return dif.unwrap().release(); +} + +static mozilla::intl::DateIntervalFormat* GetOrCreateDateIntervalFormat( + JSContext* cx, Handle<DateTimeFormatObject*> dateTimeFormat, + mozilla::intl::DateTimeFormat& mozDtf) { + // Obtain a cached DateIntervalFormat object. + mozilla::intl::DateIntervalFormat* dif = + dateTimeFormat->getDateIntervalFormat(); + if (dif) { + return dif; + } + + dif = NewDateIntervalFormat(cx, dateTimeFormat, mozDtf); + if (!dif) { + return nullptr; + } + dateTimeFormat->setDateIntervalFormat(dif); + + intl::AddICUCellMemory( + dateTimeFormat, + DateTimeFormatObject::UDateIntervalFormatEstimatedMemoryUse); + return dif; +} + +/** + * PartitionDateTimeRangePattern ( dateTimeFormat, x, y ) + */ +static bool PartitionDateTimeRangePattern( + JSContext* cx, const mozilla::intl::DateTimeFormat* df, + const mozilla::intl::DateIntervalFormat* dif, + mozilla::intl::AutoFormattedDateInterval& formatted, ClippedTime x, + ClippedTime y, bool* equal) { + MOZ_ASSERT(x.isValid()); + MOZ_ASSERT(y.isValid()); + + // We can't access the calendar used by UDateIntervalFormat to change it to a + // proleptic Gregorian calendar. Instead we need to call a different formatter + // function which accepts UCalendar instead of UDate. + // But creating new UCalendar objects for each call is slow, so when we can + // ensure that the input dates are later than the Gregorian change date, + // directly call the formatter functions taking UDate. + + // The Gregorian change date "1582-10-15T00:00:00.000Z". + constexpr double GregorianChangeDate = -12219292800000.0; + + // Add a full day to account for time zone offsets. + constexpr double GregorianChangeDatePlusOneDay = + GregorianChangeDate + msPerDay; + + mozilla::intl::ICUResult result = Ok(); + if (x.toDouble() < GregorianChangeDatePlusOneDay || + y.toDouble() < GregorianChangeDatePlusOneDay) { + // Create calendar objects for the start and end date by cloning the date + // formatter calendar. The date formatter calendar already has the correct + // time zone set and was changed to use a proleptic Gregorian calendar. + auto startCal = df->CloneCalendar(x.toDouble()); + if (startCal.isErr()) { + intl::ReportInternalError(cx, startCal.unwrapErr()); + return false; + } + + auto endCal = df->CloneCalendar(y.toDouble()); + if (endCal.isErr()) { + intl::ReportInternalError(cx, endCal.unwrapErr()); + return false; + } + + result = dif->TryFormatCalendar(*startCal.unwrap(), *endCal.unwrap(), + formatted, equal); + } else { + // The common fast path which doesn't require creating calendar objects. + result = + dif->TryFormatDateTime(x.toDouble(), y.toDouble(), formatted, equal); + } + + if (result.isErr()) { + intl::ReportInternalError(cx, result.unwrapErr()); + return false; + } + + return true; +} + +/** + * FormatDateTimeRange( dateTimeFormat, x, y ) + */ +static bool FormatDateTimeRange(JSContext* cx, + const mozilla::intl::DateTimeFormat* df, + const mozilla::intl::DateIntervalFormat* dif, + ClippedTime x, ClippedTime y, + MutableHandleValue result) { + mozilla::intl::AutoFormattedDateInterval formatted; + if (!formatted.IsValid()) { + intl::ReportInternalError(cx, formatted.GetError()); + return false; + } + + bool equal; + if (!PartitionDateTimeRangePattern(cx, df, dif, formatted, x, y, &equal)) { + return false; + } + + // PartitionDateTimeRangePattern, step 12. + if (equal) { + return intl_FormatDateTime(cx, df, x, result); + } + + auto spanResult = formatted.ToSpan(); + if (spanResult.isErr()) { + intl::ReportInternalError(cx, spanResult.unwrapErr()); + return false; + } + JSString* resultStr = NewStringCopy<CanGC>(cx, spanResult.unwrap()); + if (!resultStr) { + return false; + } + + result.setString(resultStr); + return true; +} + +/** + * FormatDateTimeRangeToParts ( dateTimeFormat, x, y ) + */ +static bool FormatDateTimeRangeToParts( + JSContext* cx, const mozilla::intl::DateTimeFormat* df, + const mozilla::intl::DateIntervalFormat* dif, ClippedTime x, ClippedTime y, + MutableHandleValue result) { + mozilla::intl::AutoFormattedDateInterval formatted; + if (!formatted.IsValid()) { + intl::ReportInternalError(cx, formatted.GetError()); + return false; + } + + bool equal; + if (!PartitionDateTimeRangePattern(cx, df, dif, formatted, x, y, &equal)) { + return false; + } + + // PartitionDateTimeRangePattern, step 12. + if (equal) { + return intl_FormatToPartsDateTime(cx, df, x, /* hasNoSource */ false, + result); + } + + mozilla::intl::DateTimePartVector parts; + auto r = dif->TryFormattedToParts(formatted, parts); + if (r.isErr()) { + intl::ReportInternalError(cx, r.unwrapErr()); + return false; + } + + auto spanResult = formatted.ToSpan(); + if (spanResult.isErr()) { + intl::ReportInternalError(cx, spanResult.unwrapErr()); + return false; + } + return CreateDateTimePartArray(cx, spanResult.unwrap(), + /* hasNoSource */ false, parts, result); +} + +bool js::intl_FormatDateTimeRange(JSContext* cx, unsigned argc, Value* vp) { + CallArgs args = CallArgsFromVp(argc, vp); + MOZ_ASSERT(args.length() == 4); + MOZ_ASSERT(args[0].isObject()); + MOZ_ASSERT(args[1].isNumber()); + MOZ_ASSERT(args[2].isNumber()); + MOZ_ASSERT(args[3].isBoolean()); + + Rooted<DateTimeFormatObject*> dateTimeFormat(cx); + dateTimeFormat = &args[0].toObject().as<DateTimeFormatObject>(); + + bool formatToParts = args[3].toBoolean(); + + // PartitionDateTimeRangePattern, steps 1-2. + ClippedTime x = TimeClip(args[1].toNumber()); + if (!x.isValid()) { + JS_ReportErrorNumberASCII( + cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE, "DateTimeFormat", + formatToParts ? "formatRangeToParts" : "formatRange"); + return false; + } + + // PartitionDateTimeRangePattern, steps 3-4. + ClippedTime y = TimeClip(args[2].toNumber()); + if (!y.isValid()) { + JS_ReportErrorNumberASCII( + cx, GetErrorMessage, nullptr, JSMSG_DATE_NOT_FINITE, "DateTimeFormat", + formatToParts ? "formatRangeToParts" : "formatRange"); + return false; + } + + mozilla::intl::DateTimeFormat* df = + GetOrCreateDateTimeFormat(cx, dateTimeFormat); + if (!df) { + return false; + } + + mozilla::intl::DateIntervalFormat* dif = + GetOrCreateDateIntervalFormat(cx, dateTimeFormat, *df); + if (!dif) { + return false; + } + + // Use the DateIntervalFormat to actually format the time range. + return formatToParts + ? FormatDateTimeRangeToParts(cx, df, dif, x, y, args.rval()) + : FormatDateTimeRange(cx, df, dif, x, y, args.rval()); +} |