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IntlNumberFormat.cpp
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IntlNumberFormat.cpp
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/*
* Copyright (C) 2015 Andy VanWagoner (andy@vanwagoner.family)
* Copyright (C) 2016 Sukolsak Sakshuwong (sukolsak@gmail.com)
* Copyright (C) 2016-2021 Apple Inc. All rights reserved.
* Copyright (C) 2020 Sony Interactive Entertainment Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IntlNumberFormat.h"
#include "Error.h"
#include "IntlNumberFormatInlines.h"
#include "IntlObjectInlines.h"
#include "JSBoundFunction.h"
#include "JSCInlines.h"
#include "ObjectConstructor.h"
#include <wtf/Range.h>
#include <wtf/unicode/icu/ICUHelpers.h>
#ifdef U_HIDE_DRAFT_API
#undef U_HIDE_DRAFT_API
#endif
#if HAVE(ICU_U_NUMBER_FORMATTER)
#include <unicode/unumberformatter.h>
#endif
#if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
#include <unicode/unumberrangeformatter.h>
#endif
#define U_HIDE_DRAFT_API 1
namespace JSC {
const ClassInfo IntlNumberFormat::s_info = { "Object"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(IntlNumberFormat) };
namespace IntlNumberFormatInternal {
static constexpr bool verbose = false;
}
#if HAVE(ICU_U_NUMBER_FORMATTER)
void UNumberFormatterDeleter::operator()(UNumberFormatter* formatter)
{
if (formatter)
unumf_close(formatter);
}
#endif
#if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
void UNumberRangeFormatterDeleter::operator()(UNumberRangeFormatter* formatter)
{
if (formatter)
unumrf_close(formatter);
}
#endif
IntlNumberFormat* IntlNumberFormat::create(VM& vm, Structure* structure)
{
IntlNumberFormat* format = new (NotNull, allocateCell<IntlNumberFormat>(vm)) IntlNumberFormat(vm, structure);
format->finishCreation(vm);
return format;
}
Structure* IntlNumberFormat::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
IntlNumberFormat::IntlNumberFormat(VM& vm, Structure* structure)
: Base(vm, structure)
{
}
void IntlNumberFormat::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
template<typename Visitor>
void IntlNumberFormat::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
IntlNumberFormat* thisObject = jsCast<IntlNumberFormat*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_boundFormat);
}
DEFINE_VISIT_CHILDREN(IntlNumberFormat);
Vector<String> IntlNumberFormat::localeData(const String& locale, RelevantExtensionKey key)
{
// 9.1 Internal slots of Service Constructors & 11.2.3 Internal slots (ECMA-402 2.0)
ASSERT_UNUSED(key, key == RelevantExtensionKey::Nu);
return numberingSystemsForLocale(locale);
}
static inline unsigned computeCurrencySortKey(const String& currency)
{
ASSERT(currency.length() == 3);
ASSERT(currency.isAllSpecialCharacters<isASCIIUpper>());
return (currency[0] << 16) + (currency[1] << 8) + currency[2];
}
static inline unsigned computeCurrencySortKey(const char* currency)
{
ASSERT(strlen(currency) == 3);
ASSERT(isAllSpecialCharacters<isASCIIUpper>(currency, 3));
return (currency[0] << 16) + (currency[1] << 8) + currency[2];
}
static unsigned extractCurrencySortKey(std::pair<const char*, unsigned>* currencyMinorUnit)
{
return computeCurrencySortKey(currencyMinorUnit->first);
}
static unsigned computeCurrencyDigits(const String& currency)
{
// 11.1.1 The abstract operation CurrencyDigits (currency)
// "If the ISO 4217 currency and funds code list contains currency as an alphabetic code,
// then return the minor unit value corresponding to the currency from the list; else return 2.
static constexpr std::pair<const char*, unsigned> currencyMinorUnits[] = {
{ "BHD", 3 },
{ "BIF", 0 },
{ "BYR", 0 },
{ "CLF", 4 },
{ "CLP", 0 },
{ "DJF", 0 },
{ "GNF", 0 },
{ "IQD", 3 },
{ "ISK", 0 },
{ "JOD", 3 },
{ "JPY", 0 },
{ "KMF", 0 },
{ "KRW", 0 },
{ "KWD", 3 },
{ "LYD", 3 },
{ "OMR", 3 },
{ "PYG", 0 },
{ "RWF", 0 },
{ "TND", 3 },
{ "UGX", 0 },
{ "UYI", 0 },
{ "VND", 0 },
{ "VUV", 0 },
{ "XAF", 0 },
{ "XOF", 0 },
{ "XPF", 0 }
};
auto* currencyMinorUnit = tryBinarySearch<std::pair<const char*, unsigned>>(currencyMinorUnits, WTF_ARRAY_LENGTH(currencyMinorUnits), computeCurrencySortKey(currency), extractCurrencySortKey);
if (currencyMinorUnit)
return currencyMinorUnit->second;
return 2;
}
static std::optional<MeasureUnit> sanctionedSimpleUnitIdentifier(StringView unitIdentifier)
{
ASSERT(
std::is_sorted(std::begin(simpleUnits), std::end(simpleUnits),
[](const MeasureUnit& a, const MeasureUnit& b) {
return WTF::codePointCompare(StringView(a.subType), StringView(b.subType)) < 0;
}));
auto iterator = std::lower_bound(std::begin(simpleUnits), std::end(simpleUnits), unitIdentifier,
[](const MeasureUnit& unit, StringView unitIdentifier) {
return WTF::codePointCompare(StringView(unit.subType), unitIdentifier) < 0;
});
if (iterator != std::end(simpleUnits) && iterator->subType == unitIdentifier)
return *iterator;
return std::nullopt;
}
struct WellFormedUnit {
public:
explicit WellFormedUnit(MeasureUnit numerator)
: numerator(numerator)
{
}
WellFormedUnit(MeasureUnit numerator, MeasureUnit denominator)
: numerator(numerator)
, denominator(denominator)
{
}
MeasureUnit numerator;
std::optional<MeasureUnit> denominator;
};
static std::optional<WellFormedUnit> wellFormedUnitIdentifier(StringView unitIdentifier)
{
// https://tc39.es/ecma402/#sec-iswellformedunitidentifier
if (auto unit = sanctionedSimpleUnitIdentifier(unitIdentifier))
return WellFormedUnit(unit.value());
// If the substring "-per-" does not occur exactly once in unitIdentifier, then return false.
auto per = StringView("-per-"_s);
auto position = unitIdentifier.find(per);
if (position == WTF::notFound)
return std::nullopt;
if (unitIdentifier.find(per, position + per.length()) != WTF::notFound)
return std::nullopt;
// If the result of IsSanctionedSimpleUnitIdentifier(numerator) is false, then return false.
auto numerator = unitIdentifier.left(position);
auto numeratorUnit = sanctionedSimpleUnitIdentifier(numerator);
if (!numeratorUnit)
return std::nullopt;
// If the result of IsSanctionedSimpleUnitIdentifier(denominator) is false, then return false.
auto denominator = unitIdentifier.substring(position + per.length());
auto denominatorUnit = sanctionedSimpleUnitIdentifier(denominator);
if (!denominatorUnit)
return std::nullopt;
return WellFormedUnit(numeratorUnit.value(), denominatorUnit.value());
}
static ASCIILiteral partTypeString(UNumberFormatFields field, IntlNumberFormat::Style style, bool sign, IntlMathematicalValue::NumberType type)
{
switch (field) {
case UNUM_INTEGER_FIELD:
switch (type) {
case IntlMathematicalValue::NumberType::NaN:
return "nan"_s;
case IntlMathematicalValue::NumberType::Infinity:
return "infinity"_s;
case IntlMathematicalValue::NumberType::Integer:
return "integer"_s;
}
ASSERT_NOT_REACHED();
return "unknown"_s;
case UNUM_FRACTION_FIELD:
return "fraction"_s;
case UNUM_DECIMAL_SEPARATOR_FIELD:
return "decimal"_s;
case UNUM_EXPONENT_SYMBOL_FIELD:
return "exponentSeparator"_s;
case UNUM_EXPONENT_SIGN_FIELD:
return "exponentMinusSign"_s;
case UNUM_EXPONENT_FIELD:
return "exponentInteger"_s;
case UNUM_GROUPING_SEPARATOR_FIELD:
return "group"_s;
case UNUM_CURRENCY_FIELD:
return "currency"_s;
case UNUM_PERCENT_FIELD:
// If the style is "unit", we should report as unit.
// JSTests/test262/test/intl402/NumberFormat/prototype/formatToParts/percent-en-US.js
return (style == IntlNumberFormat::Style::Unit) ? "unit"_s : "percentSign"_s;
case UNUM_SIGN_FIELD:
return sign ? "minusSign"_s : "plusSign"_s;
#if HAVE(ICU_U_NUMBER_FORMATTER)
case UNUM_MEASURE_UNIT_FIELD:
return "unit"_s;
case UNUM_COMPACT_FIELD:
return "compact"_s;
#endif
// These should not show up because there is no way to specify them in NumberFormat options.
// If they do, they don't fit well into any of known part types, so consider it an "unknown".
case UNUM_PERMILL_FIELD:
// Any newer additions to the UNumberFormatFields enum should just be considered an "unknown" part.
default:
return "unknown"_s;
}
return "unknown"_s;
}
// https://tc39.github.io/ecma402/#sec-initializenumberformat
void IntlNumberFormat::initializeNumberFormat(JSGlobalObject* globalObject, JSValue locales, JSValue optionsValue)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto requestedLocales = canonicalizeLocaleList(globalObject, locales);
RETURN_IF_EXCEPTION(scope, void());
JSObject* options = intlCoerceOptionsToObject(globalObject, optionsValue);
RETURN_IF_EXCEPTION(scope, void());
ResolveLocaleOptions localeOptions;
LocaleMatcher localeMatcher = intlOption<LocaleMatcher>(globalObject, options, vm.propertyNames->localeMatcher, { { "lookup"_s, LocaleMatcher::Lookup }, { "best fit"_s, LocaleMatcher::BestFit } }, "localeMatcher must be either \"lookup\" or \"best fit\""_s, LocaleMatcher::BestFit);
RETURN_IF_EXCEPTION(scope, void());
String numberingSystem = intlStringOption(globalObject, options, vm.propertyNames->numberingSystem, { }, { }, { });
RETURN_IF_EXCEPTION(scope, void());
if (!numberingSystem.isNull()) {
if (!isUnicodeLocaleIdentifierType(numberingSystem)) {
throwRangeError(globalObject, scope, "numberingSystem is not a well-formed numbering system value"_s);
return;
}
localeOptions[static_cast<unsigned>(RelevantExtensionKey::Nu)] = numberingSystem;
}
const auto& availableLocales = intlNumberFormatAvailableLocales();
auto resolved = resolveLocale(globalObject, availableLocales, requestedLocales, localeMatcher, localeOptions, { RelevantExtensionKey::Nu }, localeData);
m_locale = resolved.locale;
if (m_locale.isEmpty()) {
throwTypeError(globalObject, scope, "failed to initialize NumberFormat due to invalid locale"_s);
return;
}
m_numberingSystem = resolved.extensions[static_cast<unsigned>(RelevantExtensionKey::Nu)];
m_style = intlOption<Style>(globalObject, options, vm.propertyNames->style, { { "decimal"_s, Style::Decimal }, { "percent"_s, Style::Percent }, { "currency"_s, Style::Currency }, { "unit"_s, Style::Unit } }, "style must be either \"decimal\", \"percent\", \"currency\", or \"unit\""_s, Style::Decimal);
RETURN_IF_EXCEPTION(scope, void());
String currency = intlStringOption(globalObject, options, Identifier::fromString(vm, "currency"_s), { }, { }, { });
RETURN_IF_EXCEPTION(scope, void());
if (!currency.isNull()) {
if (!isWellFormedCurrencyCode(currency)) {
throwException(globalObject, scope, createRangeError(globalObject, "currency is not a well-formed currency code"_s));
return;
}
}
unsigned currencyDigits = 0;
if (m_style == Style::Currency) {
if (currency.isNull()) {
throwTypeError(globalObject, scope, "currency must be a string"_s);
return;
}
currency = currency.convertToASCIIUppercase();
m_currency = currency;
currencyDigits = computeCurrencyDigits(currency);
}
m_currencyDisplay = intlOption<CurrencyDisplay>(globalObject, options, Identifier::fromString(vm, "currencyDisplay"_s), { { "code"_s, CurrencyDisplay::Code }, { "symbol"_s, CurrencyDisplay::Symbol }, { "narrowSymbol"_s, CurrencyDisplay::NarrowSymbol }, { "name"_s, CurrencyDisplay::Name } }, "currencyDisplay must be either \"code\", \"symbol\", or \"name\""_s, CurrencyDisplay::Symbol);
RETURN_IF_EXCEPTION(scope, void());
m_currencySign = intlOption<CurrencySign>(globalObject, options, Identifier::fromString(vm, "currencySign"_s), { { "standard"_s, CurrencySign::Standard }, { "accounting"_s, CurrencySign::Accounting } }, "currencySign must be either \"standard\" or \"accounting\""_s, CurrencySign::Standard);
RETURN_IF_EXCEPTION(scope, void());
String unit = intlStringOption(globalObject, options, Identifier::fromString(vm, "unit"_s), { }, { }, { });
RETURN_IF_EXCEPTION(scope, void());
std::optional<WellFormedUnit> wellFormedUnit;
if (!unit.isNull()) {
wellFormedUnit = wellFormedUnitIdentifier(unit);
if (!wellFormedUnit) {
throwRangeError(globalObject, scope, "unit is not a well-formed unit identifier"_s);
return;
}
m_unit = unit;
} else if (m_style == Style::Unit) {
throwTypeError(globalObject, scope, "unit must be a string"_s);
return;
}
m_unitDisplay = intlOption<UnitDisplay>(globalObject, options, Identifier::fromString(vm, "unitDisplay"_s), { { "short"_s, UnitDisplay::Short }, { "narrow"_s, UnitDisplay::Narrow }, { "long"_s, UnitDisplay::Long } }, "unitDisplay must be either \"short\", \"narrow\", or \"long\""_s, UnitDisplay::Short);
RETURN_IF_EXCEPTION(scope, void());
unsigned minimumFractionDigitsDefault = (m_style == Style::Currency) ? currencyDigits : 0;
unsigned maximumFractionDigitsDefault = (m_style == Style::Currency) ? currencyDigits : (m_style == Style::Percent) ? 0 : 3;
m_notation = intlOption<IntlNotation>(globalObject, options, Identifier::fromString(vm, "notation"_s), { { "standard"_s, IntlNotation::Standard }, { "scientific"_s, IntlNotation::Scientific }, { "engineering"_s, IntlNotation::Engineering }, { "compact"_s, IntlNotation::Compact } }, "notation must be either \"standard\", \"scientific\", \"engineering\", or \"compact\""_s, IntlNotation::Standard);
RETURN_IF_EXCEPTION(scope, void());
setNumberFormatDigitOptions(globalObject, this, options, minimumFractionDigitsDefault, maximumFractionDigitsDefault, m_notation);
RETURN_IF_EXCEPTION(scope, void());
m_roundingIncrement = intlNumberOption(globalObject, options, vm.propertyNames->roundingIncrement, 1, 5000, 1);
RETURN_IF_EXCEPTION(scope, void());
static constexpr const unsigned roundingIncrementCandidates[] = {
1, 2, 5, 10, 20, 25, 50, 100, 200, 250, 500, 1000, 2000, 2500, 5000
};
if (std::none_of(roundingIncrementCandidates, roundingIncrementCandidates + std::size(roundingIncrementCandidates),
[&](unsigned candidate) {
return candidate == m_roundingIncrement;
})) {
throwRangeError(globalObject, scope, "roundingIncrement must be one of 1, 2, 5, 10, 20, 25, 50, 100, 200, 250, 500, 1000, 2000, 2500, 5000"_s);
return;
}
if (m_roundingIncrement != 1) {
if (m_roundingType != IntlRoundingType::FractionDigits) {
throwTypeError(globalObject, scope, "rounding type is not fraction-digits while roundingIncrement is specified"_s);
return;
}
// FIXME: The proposal has m_maximumFractionDigits != m_minimumFractionDigits check here, but it breaks the use case.
// We intentionally do not follow to that here until the issue is fixed.
// https://github.com/tc39/proposal-intl-numberformat-v3/issues/97
}
m_trailingZeroDisplay = intlOption<TrailingZeroDisplay>(globalObject, options, vm.propertyNames->trailingZeroDisplay, { { "auto"_s, TrailingZeroDisplay::Auto }, { "stripIfInteger"_s, TrailingZeroDisplay::StripIfInteger } }, "trailingZeroDisplay must be either \"auto\" or \"stripIfInteger\""_s, TrailingZeroDisplay::Auto);
RETURN_IF_EXCEPTION(scope, void());
m_compactDisplay = intlOption<CompactDisplay>(globalObject, options, Identifier::fromString(vm, "compactDisplay"_s), { { "short"_s, CompactDisplay::Short }, { "long"_s, CompactDisplay::Long } }, "compactDisplay must be either \"short\" or \"long\""_s, CompactDisplay::Short);
RETURN_IF_EXCEPTION(scope, void());
UseGrouping defaultUseGrouping = UseGrouping::Auto;
if (m_notation == IntlNotation::Compact)
defaultUseGrouping = UseGrouping::Min2;
m_useGrouping = intlStringOrBooleanOption<UseGrouping>(globalObject, options, Identifier::fromString(vm, "useGrouping"_s), UseGrouping::Always, UseGrouping::False, { { "min2"_s, UseGrouping::Min2 }, { "auto"_s, UseGrouping::Auto }, { "always"_s, UseGrouping::Always } }, "useGrouping must be either true, false, \"min2\", \"auto\", or \"always\""_s, defaultUseGrouping);
RETURN_IF_EXCEPTION(scope, void());
m_signDisplay = intlOption<SignDisplay>(globalObject, options, Identifier::fromString(vm, "signDisplay"_s), { { "auto"_s, SignDisplay::Auto }, { "never"_s, SignDisplay::Never }, { "always"_s, SignDisplay::Always }, { "exceptZero"_s, SignDisplay::ExceptZero }, { "negative"_s, SignDisplay::Negative } }, "signDisplay must be either \"auto\", \"never\", \"always\", \"exceptZero\", or \"negative\""_s, SignDisplay::Auto);
RETURN_IF_EXCEPTION(scope, void());
m_roundingMode = intlOption<RoundingMode>(globalObject, options, vm.propertyNames->roundingMode, {
{ "ceil"_s, RoundingMode::Ceil },
{ "floor"_s, RoundingMode::Floor },
{ "expand"_s, RoundingMode::Expand },
{ "trunc"_s, RoundingMode::Trunc },
{ "halfCeil"_s, RoundingMode::HalfCeil },
{ "halfFloor"_s, RoundingMode::HalfFloor },
{ "halfExpand"_s, RoundingMode::HalfExpand },
{ "halfTrunc"_s, RoundingMode::HalfTrunc },
{ "halfEven"_s, RoundingMode::HalfEven }
}, "roundingMode must be either \"ceil\", \"floor\", \"expand\", \"trunc\", \"halfCeil\", \"halfFloor\", \"halfExpand\", \"halfTrunc\", or \"halfEven\""_s, RoundingMode::HalfExpand);
RETURN_IF_EXCEPTION(scope, void());
CString dataLocaleWithExtensions = makeString(resolved.dataLocale, "-u-nu-", m_numberingSystem).utf8();
dataLogLnIf(IntlNumberFormatInternal::verbose, "dataLocaleWithExtensions:(", dataLocaleWithExtensions , ")");
// Options are obtained. Configure formatter here.
#if HAVE(ICU_U_NUMBER_FORMATTER)
// Constructing ICU Number Skeletons to configure UNumberFormatter.
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md
StringBuilder skeletonBuilder;
switch (m_roundingMode) {
case RoundingMode::Ceil:
skeletonBuilder.append("rounding-mode-ceiling");
break;
case RoundingMode::Floor:
skeletonBuilder.append("rounding-mode-floor");
break;
case RoundingMode::Expand:
skeletonBuilder.append("rounding-mode-up");
break;
case RoundingMode::Trunc:
skeletonBuilder.append("rounding-mode-down");
break;
case RoundingMode::HalfCeil: {
// Only ICU69~ supports half-ceiling. Ignore this option if linked ICU does not support it.
// https://github.com/unicode-org/icu/commit/e8dfea9bb6bb27596731173b352759e44ad06b21
if (WTF::ICU::majorVersion() >= 69)
skeletonBuilder.append("rounding-mode-half-ceiling");
else
skeletonBuilder.append("rounding-mode-half-up"); // Default option.
break;
}
case RoundingMode::HalfFloor: {
// Only ICU69~ supports half-ceil. Ignore this option if linked ICU does not support it.
// https://github.com/unicode-org/icu/commit/e8dfea9bb6bb27596731173b352759e44ad06b21
if (WTF::ICU::majorVersion() >= 69)
skeletonBuilder.append("rounding-mode-half-floor");
else
skeletonBuilder.append("rounding-mode-half-up"); // Default option.
break;
}
case RoundingMode::HalfExpand:
skeletonBuilder.append("rounding-mode-half-up");
break;
case RoundingMode::HalfTrunc:
skeletonBuilder.append("rounding-mode-half-down");
break;
case RoundingMode::HalfEven:
skeletonBuilder.append("rounding-mode-half-even");
break;
}
switch (m_style) {
case Style::Decimal:
// No skeleton is needed.
break;
case Style::Percent:
skeletonBuilder.append(" percent scale/100");
break;
case Style::Currency: {
skeletonBuilder.append(" currency/", currency);
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#unit-width
switch (m_currencyDisplay) {
case CurrencyDisplay::Code:
skeletonBuilder.append(" unit-width-iso-code");
break;
case CurrencyDisplay::Symbol:
// Default option. Do not specify unit-width.
break;
case CurrencyDisplay::NarrowSymbol:
skeletonBuilder.append(" unit-width-narrow");
break;
case CurrencyDisplay::Name:
skeletonBuilder.append(" unit-width-full-name");
break;
}
break;
}
case Style::Unit: {
// The measure-unit stem takes one required option: the unit identifier of the unit to be formatted.
// The full unit identifier is required: both the type and the subtype (for example, length-meter).
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#unit
skeletonBuilder.append(" measure-unit/");
auto numeratorUnit = wellFormedUnit->numerator;
skeletonBuilder.append(numeratorUnit.type, '-', numeratorUnit.subType);
if (auto denominatorUnitValue = wellFormedUnit->denominator) {
auto denominatorUnit = denominatorUnitValue.value();
skeletonBuilder.append(" per-measure-unit/", denominatorUnit.type, '-', denominatorUnit.subType);
}
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#unit-width
switch (m_unitDisplay) {
case UnitDisplay::Short:
skeletonBuilder.append(" unit-width-short");
break;
case UnitDisplay::Narrow:
skeletonBuilder.append(" unit-width-narrow");
break;
case UnitDisplay::Long:
skeletonBuilder.append(" unit-width-full-name");
break;
}
break;
}
}
appendNumberFormatDigitOptionsToSkeleton(this, skeletonBuilder);
// Configure this just after precision.
// https://github.com/unicode-org/icu/blob/main/docs/userguide/format_parse/numbers/skeletons.md#trailing-zero-display
switch (m_trailingZeroDisplay) {
case TrailingZeroDisplay::Auto:
break;
case TrailingZeroDisplay::StripIfInteger:
// Only ICU69~ supports trailing zero display. Ignore this option if linked ICU does not support it.
// https://github.com/unicode-org/icu/commit/b79c299f90d4023ac237db3d0335d568bf21cd36
if (WTF::ICU::majorVersion() >= 69)
skeletonBuilder.append("/w");
break;
}
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#notation
switch (m_notation) {
case IntlNotation::Standard:
break;
case IntlNotation::Scientific:
skeletonBuilder.append(" scientific");
break;
case IntlNotation::Engineering:
skeletonBuilder.append(" engineering");
break;
case IntlNotation::Compact:
switch (m_compactDisplay) {
case CompactDisplay::Short:
skeletonBuilder.append(" compact-short");
break;
case CompactDisplay::Long:
skeletonBuilder.append(" compact-long");
break;
}
break;
}
// https://github.com/unicode-org/icu/blob/master/docs/userguide/format_parse/numbers/skeletons.md#sign-display
// CurrencySign's accounting is a part of SignDisplay in ICU.
bool useAccounting = (m_style == Style::Currency && m_currencySign == CurrencySign::Accounting);
switch (m_signDisplay) {
case SignDisplay::Auto:
if (useAccounting)
skeletonBuilder.append(" sign-accounting");
else
skeletonBuilder.append(" sign-auto");
break;
case SignDisplay::Never:
skeletonBuilder.append(" sign-never");
break;
case SignDisplay::Always:
if (useAccounting)
skeletonBuilder.append(" sign-accounting-always");
else
skeletonBuilder.append(" sign-always");
break;
case SignDisplay::ExceptZero:
if (useAccounting)
skeletonBuilder.append(" sign-accounting-except-zero");
else
skeletonBuilder.append(" sign-except-zero");
break;
case SignDisplay::Negative:
// Only ICU69~ supports negative sign display. Ignore this option if linked ICU does not support it.
// https://github.com/unicode-org/icu/commit/1aa0dad8e06ecc99bff442dd37f6daa2d39d9a5a
if (WTF::ICU::majorVersion() >= 69) {
if (useAccounting)
skeletonBuilder.append(" sign-accounting-negative");
else
skeletonBuilder.append(" sign-negative");
}
break;
}
// https://github.com/tc39/proposal-intl-numberformat-v3/issues/3
// https://github.com/unicode-org/icu/blob/main/docs/userguide/format_parse/numbers/skeletons.md#grouping
switch (m_useGrouping) {
case UseGrouping::False:
skeletonBuilder.append(" group-off");
break;
case UseGrouping::Min2:
skeletonBuilder.append(" group-min2");
break;
case UseGrouping::Auto:
skeletonBuilder.append(" group-auto");
break;
case UseGrouping::Always:
skeletonBuilder.append(" group-on-aligned");
break;
}
String skeleton = skeletonBuilder.toString();
dataLogLnIf(IntlNumberFormatInternal::verbose, skeleton);
StringView skeletonView(skeleton);
auto upconverted = skeletonView.upconvertedCharacters();
UErrorCode status = U_ZERO_ERROR;
m_numberFormatter = std::unique_ptr<UNumberFormatter, UNumberFormatterDeleter>(unumf_openForSkeletonAndLocale(upconverted.get(), skeletonView.length(), dataLocaleWithExtensions.data(), &status));
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "Failed to initialize NumberFormat"_s);
return;
}
#if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
m_numberRangeFormatter = std::unique_ptr<UNumberRangeFormatter, UNumberRangeFormatterDeleter>(unumrf_openForSkeletonWithCollapseAndIdentityFallback(upconverted.get(), skeletonView.length(), UNUM_RANGE_COLLAPSE_AUTO, UNUM_IDENTITY_FALLBACK_APPROXIMATELY, dataLocaleWithExtensions.data(), nullptr, &status));
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize NumberFormat"_s);
return;
}
#endif
#else
UNumberFormatStyle style = UNUM_DEFAULT;
switch (m_style) {
case Style::Decimal:
style = UNUM_DECIMAL;
break;
case Style::Percent:
style = UNUM_PERCENT;
break;
case Style::Currency:
switch (m_currencyDisplay) {
case CurrencyDisplay::Code:
style = UNUM_CURRENCY_ISO;
break;
case CurrencyDisplay::Symbol:
style = UNUM_CURRENCY;
break;
case CurrencyDisplay::NarrowSymbol:
style = UNUM_CURRENCY; // Use the same option to "symbol" since linked-ICU does not support it.
break;
case CurrencyDisplay::Name:
style = UNUM_CURRENCY_PLURAL;
break;
}
switch (m_currencySign) {
case CurrencySign::Standard:
break;
case CurrencySign::Accounting:
// Ignore this case since linked ICU does not support it.
break;
}
break;
case Style::Unit:
// Ignore this case since linked ICU does not support it.
break;
}
switch (m_notation) {
case IntlNotation::Standard:
break;
case IntlNotation::Scientific:
case IntlNotation::Engineering:
case IntlNotation::Compact:
// Ignore this case since linked ICU does not support it.
break;
}
switch (m_signDisplay) {
case SignDisplay::Auto:
break;
case SignDisplay::Never:
case SignDisplay::Always:
case SignDisplay::ExceptZero:
case SignDisplay::Negative:
// Ignore this case since linked ICU does not support it.
break;
}
UErrorCode status = U_ZERO_ERROR;
m_numberFormat = std::unique_ptr<UNumberFormat, ICUDeleter<unum_close>>(unum_open(style, nullptr, 0, dataLocaleWithExtensions.data(), nullptr, &status));
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize NumberFormat"_s);
return;
}
if (m_style == Style::Currency) {
unum_setTextAttribute(m_numberFormat.get(), UNUM_CURRENCY_CODE, StringView(m_currency).upconvertedCharacters(), m_currency.length(), &status);
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize NumberFormat"_s);
return;
}
}
switch (m_roundingType) {
case IntlRoundingType::FractionDigits:
unum_setAttribute(m_numberFormat.get(), UNUM_MIN_INTEGER_DIGITS, m_minimumIntegerDigits);
unum_setAttribute(m_numberFormat.get(), UNUM_MIN_FRACTION_DIGITS, m_minimumFractionDigits);
unum_setAttribute(m_numberFormat.get(), UNUM_MAX_FRACTION_DIGITS, m_maximumFractionDigits);
break;
case IntlRoundingType::SignificantDigits:
unum_setAttribute(m_numberFormat.get(), UNUM_SIGNIFICANT_DIGITS_USED, true);
unum_setAttribute(m_numberFormat.get(), UNUM_MIN_SIGNIFICANT_DIGITS, m_minimumSignificantDigits);
unum_setAttribute(m_numberFormat.get(), UNUM_MAX_SIGNIFICANT_DIGITS, m_maximumSignificantDigits);
break;
case IntlRoundingType::MorePrecision:
// Ignore this case since linked ICU does not support it.
break;
case IntlRoundingType::LessPrecision:
// Ignore this case since linked ICU does not support it.
break;
}
switch (m_useGrouping) {
case UseGrouping::False:
unum_setAttribute(m_numberFormat.get(), UNUM_GROUPING_USED, false);
break;
case UseGrouping::Min2:
// Ignore this case since linked ICU does not support it.
break;
case UseGrouping::Auto:
break;
case UseGrouping::Always:
unum_setAttribute(m_numberFormat.get(), UNUM_GROUPING_USED, true);
break;
}
unum_setAttribute(m_numberFormat.get(), UNUM_ROUNDING_MODE, UNUM_ROUND_HALFUP);
#endif
}
// https://tc39.es/ecma402/#sec-formatnumber
JSValue IntlNumberFormat::format(JSGlobalObject* globalObject, double value) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Vector<UChar, 32> buffer;
#if HAVE(ICU_U_NUMBER_FORMATTER)
ASSERT(m_numberFormatter);
UErrorCode status = U_ZERO_ERROR;
auto formattedNumber = std::unique_ptr<UFormattedNumber, ICUDeleter<unumf_closeResult>>(unumf_openResult(&status));
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a number."_s);
unumf_formatDouble(m_numberFormatter.get(), value, formattedNumber.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a number."_s);
status = callBufferProducingFunction(unumf_resultToString, formattedNumber.get(), buffer);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a number."_s);
#else
ASSERT(m_numberFormat);
auto status = callBufferProducingFunction(unum_formatDouble, m_numberFormat.get(), value, buffer, nullptr);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a number."_s);
#endif
return jsString(vm, String(WTFMove(buffer)));
}
// https://tc39.es/ecma402/#sec-formatnumber
JSValue IntlNumberFormat::format(JSGlobalObject* globalObject, IntlMathematicalValue&& value) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
value.ensureNonDouble();
const auto& string = value.getString();
Vector<UChar, 32> buffer;
#if HAVE(ICU_U_NUMBER_FORMATTER)
ASSERT(m_numberFormatter);
UErrorCode status = U_ZERO_ERROR;
auto formattedNumber = std::unique_ptr<UFormattedNumber, ICUDeleter<unumf_closeResult>>(unumf_openResult(&status));
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a BigInt."_s);
unumf_formatDecimal(m_numberFormatter.get(), string.data(), string.length(), formattedNumber.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a BigInt."_s);
status = callBufferProducingFunction(unumf_resultToString, formattedNumber.get(), buffer);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a BigInt."_s);
#else
ASSERT(m_numberFormat);
auto status = callBufferProducingFunction(unum_formatDecimal, m_numberFormat.get(), string.data(), string.length(), buffer, nullptr);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "Failed to format a BigInt."_s);
#endif
return jsString(vm, String(WTFMove(buffer)));
}
#if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
JSValue IntlNumberFormat::formatRange(JSGlobalObject* globalObject, double start, double end) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(m_numberRangeFormatter);
if (std::isnan(start) || std::isnan(end))
return throwRangeError(globalObject, scope, "Passed numbers are out of range"_s);
UErrorCode status = U_ZERO_ERROR;
auto range = std::unique_ptr<UFormattedNumberRange, ICUDeleter<unumrf_closeResult>>(unumrf_openResult(&status));
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
unumrf_formatDoubleRange(m_numberRangeFormatter.get(), start, end, range.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
auto* formattedValue = unumrf_resultAsValue(range.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
int32_t length = 0;
const UChar* string = ufmtval_getString(formattedValue, &length, &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
return jsString(vm, String(string, length));
}
JSValue IntlNumberFormat::formatRange(JSGlobalObject* globalObject, IntlMathematicalValue&& start, IntlMathematicalValue&& end) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(m_numberRangeFormatter);
if (start.numberType() == IntlMathematicalValue::NumberType::NaN || end.numberType() == IntlMathematicalValue::NumberType::NaN)
return throwRangeError(globalObject, scope, "Passed numbers are out of range"_s);
start.ensureNonDouble();
const auto& startString = start.getString();
end.ensureNonDouble();
const auto& endString = end.getString();
UErrorCode status = U_ZERO_ERROR;
auto range = std::unique_ptr<UFormattedNumberRange, ICUDeleter<unumrf_closeResult>>(unumrf_openResult(&status));
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
unumrf_formatDecimalRange(m_numberRangeFormatter.get(), startString.data(), startString.length(), endString.data(), endString.length(), range.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
auto* formattedValue = unumrf_resultAsValue(range.get(), &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
int32_t length = 0;
const UChar* string = ufmtval_getString(formattedValue, &length, &status);
if (U_FAILURE(status))
return throwTypeError(globalObject, scope, "failed to format a range"_s);
return jsString(vm, String(string, length));
}
#endif
static constexpr int32_t literalField = -1;
struct IntlNumberFormatField {
int32_t m_field;
WTF::Range<int32_t> m_range;
};
static Vector<IntlNumberFormatField> flattenFields(Vector<IntlNumberFormatField>&& fields, int32_t formattedStringLength)
{
// ICU generates sequence of nested fields, but ECMA402 requires non-overlapping sequence of parts.
// This function flattens nested fields into sequence of non-overlapping parts.
//
// Formatted string: "100,000–20,000,000"
// | | | | | | |
// | B | | E F |
// | | | |
// +--C--+ +---G----+
// +--A--+ +---D----+
//
// Ranges ICU generates:
// A: (0, 7) UFIELD_CATEGORY_NUMBER_RANGE_SPAN startRange
// B: (3, 4) UFIELD_CATEGORY_NUMBER group ","
// C: (0, 7) UFIELD_CATEGORY_NUMBER integer
// D: (8, 18) UFIELD_CATEGORY_NUMBER_RANGE_SPAN endRange
// E: (10, 11) UFIELD_CATEGORY_NUMBER group ","
// F: (14, 15) UFIELD_CATEGORY_NUMBER group ","
// G: (8, 18) UFIELD_CATEGORY_NUMBER integer
//
// Then, we need to generate:
// A: (0, 3) startRange integer
// B: (3, 4) startRange group ","
// C: (4, 7) startRange integer
// D: (7, 8) shared literal "-"
// E: (8, 10) endRange integer
// F: (10, 11) endRange group ","
// G: (11, 14) endRange integer
// H: (14, 15) endRange group ","
// I: (15, 18) endRange integer
std::sort(fields.begin(), fields.end(), [](auto& lhs, auto& rhs) {
if (lhs.m_range.begin() < rhs.m_range.begin())
return true;
if (lhs.m_range.begin() > rhs.m_range.begin())
return false;
if (lhs.m_range.end() < rhs.m_range.end())
return false;
if (lhs.m_range.end() > rhs.m_range.end())
return true;
return lhs.m_field < rhs.m_field;
});
Vector<IntlNumberFormatField> flatten;
Vector<IntlNumberFormatField> stack;
// Top-level field covers entire parts, which makes parts "literal".
stack.append(IntlNumberFormatField { literalField, { 0, formattedStringLength } });
unsigned cursor = 0;
int32_t begin = 0;
while (cursor < fields.size()) {
const auto& field = fields[cursor];
// If the new field is out of the current top-most field, roll up and insert a flatten field.
// Because the top-level field in the stack covers all index range, this condition always becomes false
// if stack size is 1.
while (stack.last().m_range.end() < field.m_range.begin()) {
if (begin < stack.last().m_range.end()) {
IntlNumberFormatField flattenField { stack.last().m_field, { begin, stack.last().m_range.end() } };
flatten.append(flattenField);
begin = flattenField.m_range.end();
}
stack.removeLast();
}
ASSERT(!stack.isEmpty()); // At least, top-level field exists.
// If the new field is starting with the same index, diving into the new field by adding it into stack.
if (begin == field.m_range.begin()) {
stack.append(field);
++cursor;
continue;
}
// If there is a room between the current top-most field and the new field, insert a flatten field.
if (begin < field.m_range.begin()) {
IntlNumberFormatField flattenField { stack.last().m_field, { begin, field.m_range.begin() } };
flatten.append(flattenField);
stack.append(field);
begin = field.m_range.begin();
++cursor;
continue;
}
}
// Roll up the nested field at the end of the formatted string sequence.
// For example,
//
// <------------A-------------->
// <--------B------------>
// <---C---->
//
// Then, after C finishes, we should insert remaining B and A.
while (!stack.isEmpty()) {
if (begin < stack.last().m_range.end()) {
IntlNumberFormatField flattenField { stack.last().m_field, { begin, stack.last().m_range.end() } };
flatten.append(flattenField);
begin = flattenField.m_range.end();
}
stack.removeLast();
}
return flatten;