Source/JavaScriptCore/runtime/IntlPluralRules.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2018 Andy VanWagoner (andy@vanwagoner.family)
  * Copyright (C) 2019-2021 Apple Inc. All rights reserved.
  *
  * 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 "IntlPluralRules.h"

 #include "IntlNumberFormatInlines.h"
 #include "IntlObjectInlines.h"
 #include "JSCInlines.h"
 #include "ObjectConstructor.h"

 #ifdef U_HIDE_DRAFT_API
 #undef U_HIDE_DRAFT_API
 #endif
 #include <unicode/upluralrules.h>
 #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 {

 void UPluralRulesDeleter::operator()(UPluralRules* pluralRules)
 {
     if (pluralRules)
         uplrules_close(pluralRules);
 }

 const ClassInfo IntlPluralRules::s_info = { "Object"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(IntlPluralRules) };

 using UEnumerationDeleter = ICUDeleter<uenum_close>;

 IntlPluralRules* IntlPluralRules::create(VM& vm, Structure* structure)
 {
     IntlPluralRules* format = new (NotNull, allocateCell<IntlPluralRules>(vm)) IntlPluralRules(vm, structure);
     format->finishCreation(vm);
     return format;
 }

 Structure* IntlPluralRules::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
 {
     return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
 }

 IntlPluralRules::IntlPluralRules(VM& vm, Structure* structure)
     : Base(vm, structure)
 {
 }

 void IntlPluralRules::finishCreation(VM& vm)
 {
     Base::finishCreation(vm);
     ASSERT(inherits(info()));
 }

 template<typename Visitor>
 void IntlPluralRules::visitChildrenImpl(JSCell* cell, Visitor& visitor)
 {
     IntlPluralRules* thisObject = jsCast<IntlPluralRules*>(cell);
     ASSERT_GC_OBJECT_INHERITS(thisObject, info());

     Base::visitChildren(thisObject, visitor);
 }

 DEFINE_VISIT_CHILDREN(IntlPluralRules);

 Vector<String> IntlPluralRules::localeData(const String&, RelevantExtensionKey)
 {
     return { };
 }

 // https://tc39.github.io/ecma402/#sec-initializepluralrules
 void IntlPluralRules::initializePluralRules(JSGlobalObject* globalObject, JSValue locales, JSValue optionsValue)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     Vector<String> 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());

     const auto& availableLocales = intlPluralRulesAvailableLocales();
     auto resolved = resolveLocale(globalObject, availableLocales, requestedLocales, localeMatcher, localeOptions, { }, localeData);
     m_locale = resolved.locale;
     if (m_locale.isEmpty()) {
         throwTypeError(globalObject, scope, "failed to initialize PluralRules due to invalid locale"_s);
         return;
     }

     m_type = intlOption<Type>(globalObject, options, vm.propertyNames->type, { { "cardinal"_s, Type::Cardinal }, { "ordinal"_s, Type::Ordinal } }, "type must be \"cardinal\" or \"ordinal\""_s, Type::Cardinal);
     RETURN_IF_EXCEPTION(scope, void());

     setNumberFormatDigitOptions(globalObject, this, options, 0, 3, IntlNotation::Standard);
     RETURN_IF_EXCEPTION(scope, void());

     auto locale = m_locale.utf8();
     UErrorCode status = U_ZERO_ERROR;

 #if HAVE(ICU_U_NUMBER_FORMATTER)
     StringBuilder skeletonBuilder;
     skeletonBuilder.append("rounding-mode-half-up");

     appendNumberFormatDigitOptionsToSkeleton(this, skeletonBuilder);

     String skeleton = skeletonBuilder.toString();
     StringView skeletonView(skeleton);
     auto upconverted = skeletonView.upconvertedCharacters();

     m_numberFormatter = std::unique_ptr<UNumberFormatter, UNumberFormatterDeleter>(unumf_openForSkeletonAndLocale(upconverted.get(), skeletonView.length(), locale.data(), &status));
     if (U_FAILURE(status)) {
         throwTypeError(globalObject, scope, "failed to initialize PluralRules"_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_NONE, UNUM_IDENTITY_FALLBACK_RANGE, locale.data(), nullptr, &status));
     if (U_FAILURE(status)) {
         throwTypeError(globalObject, scope, "failed to initialize PluralRules"_s);
         return;
     }
 #endif
 #else
     m_numberFormat = std::unique_ptr<UNumberFormat, UNumberFormatDeleter>(unum_open(UNUM_DECIMAL, nullptr, 0, locale.data(), nullptr, &status));
     if (U_FAILURE(status)) {
         throwTypeError(globalObject, scope, "failed to initialize PluralRules"_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:
     case IntlRoundingType::LessPrecision:
         break;
     }
 #endif

     m_pluralRules = std::unique_ptr<UPluralRules, UPluralRulesDeleter>(uplrules_openForType(locale.data(), m_type == Type::Ordinal ? UPLURAL_TYPE_ORDINAL : UPLURAL_TYPE_CARDINAL, &status));
     if (U_FAILURE(status)) {
         throwTypeError(globalObject, scope, "failed to initialize PluralRules"_s);
         return;
     }
 }

 // https://tc39.es/ecma402/#sec-intl.pluralrules.prototype.resolvedoptions
 JSObject* IntlPluralRules::resolvedOptions(JSGlobalObject* globalObject) const
 {
     ASSERT(m_pluralRules);

     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     JSObject* options = constructEmptyObject(globalObject);
     options->putDirect(vm, vm.propertyNames->locale, jsNontrivialString(vm, m_locale));
     options->putDirect(vm, vm.propertyNames->type, jsNontrivialString(vm, m_type == Type::Ordinal ? "ordinal"_s : "cardinal"_s));
     options->putDirect(vm, vm.propertyNames->minimumIntegerDigits, jsNumber(m_minimumIntegerDigits));
     switch (m_roundingType) {
     case IntlRoundingType::FractionDigits:
         options->putDirect(vm, vm.propertyNames->minimumFractionDigits, jsNumber(m_minimumFractionDigits));
         options->putDirect(vm, vm.propertyNames->maximumFractionDigits, jsNumber(m_maximumFractionDigits));
         break;
     case IntlRoundingType::SignificantDigits:
         options->putDirect(vm, vm.propertyNames->minimumSignificantDigits, jsNumber(m_minimumSignificantDigits));
         options->putDirect(vm, vm.propertyNames->maximumSignificantDigits, jsNumber(m_maximumSignificantDigits));
         break;
     case IntlRoundingType::MorePrecision:
     case IntlRoundingType::LessPrecision:
         options->putDirect(vm, vm.propertyNames->minimumFractionDigits, jsNumber(m_minimumFractionDigits));
         options->putDirect(vm, vm.propertyNames->maximumFractionDigits, jsNumber(m_maximumFractionDigits));
         options->putDirect(vm, vm.propertyNames->minimumSignificantDigits, jsNumber(m_minimumSignificantDigits));
         options->putDirect(vm, vm.propertyNames->maximumSignificantDigits, jsNumber(m_maximumSignificantDigits));
         break;
     }

     JSArray* categories = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), 0);
     if (UNLIKELY(!categories)) {
         throwOutOfMemoryError(globalObject, scope);
         return nullptr;
     }

     UErrorCode status = U_ZERO_ERROR;
     auto keywords = std::unique_ptr<UEnumeration, UEnumerationDeleter>(uplrules_getKeywords(m_pluralRules.get(), &status));
     ASSERT(U_SUCCESS(status));
     int32_t resultLength;

     // Category names are always ASCII, so use char[].
     unsigned index = 0;
     while (const char* result = uenum_next(keywords.get(), &resultLength, &status)) {
         ASSERT(U_SUCCESS(status));
         categories->putDirectIndex(globalObject, index++, jsNontrivialString(vm, String(result, resultLength)));
         RETURN_IF_EXCEPTION(scope, { });
     }
     options->putDirect(vm, Identifier::fromString(vm, "pluralCategories"_s), categories);
     options->putDirect(vm, vm.propertyNames->roundingMode, jsNontrivialString(vm, IntlNumberFormat::roundingPriorityString(m_roundingType)));

     return options;
 }

 // https://tc39.es/ecma402/#sec-resolveplural
 JSValue IntlPluralRules::select(JSGlobalObject* globalObject, double value) const
 {
     ASSERT(m_pluralRules);

     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (!std::isfinite(value))
         return jsNontrivialString(vm, "other"_s);

     UErrorCode status = U_ZERO_ERROR;

 #if HAVE(ICU_U_NUMBER_FORMATTER)
     auto formattedNumber = std::unique_ptr<UFormattedNumber, ICUDeleter<unumf_closeResult>>(unumf_openResult(&status));
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select plural value"_s);
     unumf_formatDouble(m_numberFormatter.get(), value, formattedNumber.get(), &status);
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select plural value"_s);
     Vector<UChar, 32> buffer;
     status = callBufferProducingFunction(uplrules_selectFormatted, m_pluralRules.get(), formattedNumber.get(), buffer);
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select plural value"_s);
     return jsString(vm, String(WTFMove(buffer)));
 #else
     Vector<UChar, 8> result(8);
     auto length = uplrules_selectWithFormat(m_pluralRules.get(), value, m_numberFormat.get(), result.data(), result.size(), &status);
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select plural value"_s);

     return jsString(vm, String(result.data(), length));
 #endif
 }

 #if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
 JSValue IntlPluralRules::selectRange(JSGlobalObject* globalObject, double start, double end) const
 {
     ASSERT(m_numberRangeFormatter);

     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (std::isnan(start) || std::isnan(end))
         return throwRangeError(globalObject, scope, "Passed numbers are out of range"_s);

     if (end < start)
         return throwRangeError(globalObject, scope, "start is larger than end"_s);

     if (isNegativeZero(end) && start >= 0)
         return throwRangeError(globalObject, scope, "start is larger than end"_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 select range of plural value"_s);

     unumrf_formatDoubleRange(m_numberRangeFormatter.get(), start, end, range.get(), &status);
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select range of plural value"_s);

     Vector<UChar, 32> buffer;
     status = callBufferProducingFunction(uplrules_selectForRange, m_pluralRules.get(), range.get(), buffer);
     if (U_FAILURE(status))
         return throwTypeError(globalObject, scope, "failed to select plural value"_s);
     return jsString(vm, String(WTFMove(buffer)));
 }
 #endif

 } // namespace JSC
	/*
	* Copyright (C) 2018 Andy VanWagoner (andy@vanwagoner.family)
	* Copyright (C) 2019-2021 Apple Inc. All rights reserved.
	*
	* 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 "IntlPluralRules.h"

	#include "IntlNumberFormatInlines.h"
	#include "IntlObjectInlines.h"
	#include "JSCInlines.h"
	#include "ObjectConstructor.h"

	#ifdef U_HIDE_DRAFT_API
	#undef U_HIDE_DRAFT_API
	#endif
	#include <unicode/upluralrules.h>
	#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 {

	void UPluralRulesDeleter::operator()(UPluralRules* pluralRules)
	{
	if (pluralRules)
	uplrules_close(pluralRules);
	}

	const ClassInfo IntlPluralRules::s_info = { "Object"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(IntlPluralRules) };

	using UEnumerationDeleter = ICUDeleter<uenum_close>;

	IntlPluralRules* IntlPluralRules::create(VM& vm, Structure* structure)
	{
	IntlPluralRules* format = new (NotNull, allocateCell<IntlPluralRules>(vm)) IntlPluralRules(vm, structure);
	format->finishCreation(vm);
	return format;
	}

	Structure* IntlPluralRules::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
	{
	return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
	}

	IntlPluralRules::IntlPluralRules(VM& vm, Structure* structure)
	: Base(vm, structure)
	{
	}

	void IntlPluralRules::finishCreation(VM& vm)
	{
	Base::finishCreation(vm);
	ASSERT(inherits(info()));
	}

	template<typename Visitor>
	void IntlPluralRules::visitChildrenImpl(JSCell* cell, Visitor& visitor)
	{
	IntlPluralRules* thisObject = jsCast<IntlPluralRules*>(cell);
	ASSERT_GC_OBJECT_INHERITS(thisObject, info());

	Base::visitChildren(thisObject, visitor);
	}

	DEFINE_VISIT_CHILDREN(IntlPluralRules);

	Vector<String> IntlPluralRules::localeData(const String&, RelevantExtensionKey)
	{
	return { };
	}

	// https://tc39.github.io/ecma402/#sec-initializepluralrules
	void IntlPluralRules::initializePluralRules(JSGlobalObject* globalObject, JSValue locales, JSValue optionsValue)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	Vector<String> 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());

	const auto& availableLocales = intlPluralRulesAvailableLocales();
	auto resolved = resolveLocale(globalObject, availableLocales, requestedLocales, localeMatcher, localeOptions, { }, localeData);
	m_locale = resolved.locale;
	if (m_locale.isEmpty()) {
	throwTypeError(globalObject, scope, "failed to initialize PluralRules due to invalid locale"_s);
	return;
	}

	m_type = intlOption<Type>(globalObject, options, vm.propertyNames->type, { { "cardinal"_s, Type::Cardinal }, { "ordinal"_s, Type::Ordinal } }, "type must be \"cardinal\" or \"ordinal\""_s, Type::Cardinal);
	RETURN_IF_EXCEPTION(scope, void());

	setNumberFormatDigitOptions(globalObject, this, options, 0, 3, IntlNotation::Standard);
	RETURN_IF_EXCEPTION(scope, void());

	auto locale = m_locale.utf8();
	UErrorCode status = U_ZERO_ERROR;

	#if HAVE(ICU_U_NUMBER_FORMATTER)
	StringBuilder skeletonBuilder;
	skeletonBuilder.append("rounding-mode-half-up");

	appendNumberFormatDigitOptionsToSkeleton(this, skeletonBuilder);

	String skeleton = skeletonBuilder.toString();
	StringView skeletonView(skeleton);
	auto upconverted = skeletonView.upconvertedCharacters();

	m_numberFormatter = std::unique_ptr<UNumberFormatter, UNumberFormatterDeleter>(unumf_openForSkeletonAndLocale(upconverted.get(), skeletonView.length(), locale.data(), &status));
	if (U_FAILURE(status)) {
	throwTypeError(globalObject, scope, "failed to initialize PluralRules"_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_NONE, UNUM_IDENTITY_FALLBACK_RANGE, locale.data(), nullptr, &status));
	if (U_FAILURE(status)) {
	throwTypeError(globalObject, scope, "failed to initialize PluralRules"_s);
	return;
	}
	#endif
	#else
	m_numberFormat = std::unique_ptr<UNumberFormat, UNumberFormatDeleter>(unum_open(UNUM_DECIMAL, nullptr, 0, locale.data(), nullptr, &status));
	if (U_FAILURE(status)) {
	throwTypeError(globalObject, scope, "failed to initialize PluralRules"_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:
	case IntlRoundingType::LessPrecision:
	break;
	}
	#endif

	m_pluralRules = std::unique_ptr<UPluralRules, UPluralRulesDeleter>(uplrules_openForType(locale.data(), m_type == Type::Ordinal ? UPLURAL_TYPE_ORDINAL : UPLURAL_TYPE_CARDINAL, &status));
	if (U_FAILURE(status)) {
	throwTypeError(globalObject, scope, "failed to initialize PluralRules"_s);
	return;
	}
	}

	// https://tc39.es/ecma402/#sec-intl.pluralrules.prototype.resolvedoptions
	JSObject* IntlPluralRules::resolvedOptions(JSGlobalObject* globalObject) const
	{
	ASSERT(m_pluralRules);

	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	JSObject* options = constructEmptyObject(globalObject);
	options->putDirect(vm, vm.propertyNames->locale, jsNontrivialString(vm, m_locale));
	options->putDirect(vm, vm.propertyNames->type, jsNontrivialString(vm, m_type == Type::Ordinal ? "ordinal"_s : "cardinal"_s));
	options->putDirect(vm, vm.propertyNames->minimumIntegerDigits, jsNumber(m_minimumIntegerDigits));
	switch (m_roundingType) {
	case IntlRoundingType::FractionDigits:
	options->putDirect(vm, vm.propertyNames->minimumFractionDigits, jsNumber(m_minimumFractionDigits));
	options->putDirect(vm, vm.propertyNames->maximumFractionDigits, jsNumber(m_maximumFractionDigits));
	break;
	case IntlRoundingType::SignificantDigits:
	options->putDirect(vm, vm.propertyNames->minimumSignificantDigits, jsNumber(m_minimumSignificantDigits));
	options->putDirect(vm, vm.propertyNames->maximumSignificantDigits, jsNumber(m_maximumSignificantDigits));
	break;
	case IntlRoundingType::MorePrecision:
	case IntlRoundingType::LessPrecision:
	options->putDirect(vm, vm.propertyNames->minimumFractionDigits, jsNumber(m_minimumFractionDigits));
	options->putDirect(vm, vm.propertyNames->maximumFractionDigits, jsNumber(m_maximumFractionDigits));
	options->putDirect(vm, vm.propertyNames->minimumSignificantDigits, jsNumber(m_minimumSignificantDigits));
	options->putDirect(vm, vm.propertyNames->maximumSignificantDigits, jsNumber(m_maximumSignificantDigits));
	break;
	}

	JSArray* categories = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), 0);
	if (UNLIKELY(!categories)) {
	throwOutOfMemoryError(globalObject, scope);
	return nullptr;
	}

	UErrorCode status = U_ZERO_ERROR;
	auto keywords = std::unique_ptr<UEnumeration, UEnumerationDeleter>(uplrules_getKeywords(m_pluralRules.get(), &status));
	ASSERT(U_SUCCESS(status));
	int32_t resultLength;

	// Category names are always ASCII, so use char[].
	unsigned index = 0;
	while (const char* result = uenum_next(keywords.get(), &resultLength, &status)) {
	ASSERT(U_SUCCESS(status));
	categories->putDirectIndex(globalObject, index++, jsNontrivialString(vm, String(result, resultLength)));
	RETURN_IF_EXCEPTION(scope, { });
	}
	options->putDirect(vm, Identifier::fromString(vm, "pluralCategories"_s), categories);
	options->putDirect(vm, vm.propertyNames->roundingMode, jsNontrivialString(vm, IntlNumberFormat::roundingPriorityString(m_roundingType)));

	return options;
	}

	// https://tc39.es/ecma402/#sec-resolveplural
	JSValue IntlPluralRules::select(JSGlobalObject* globalObject, double value) const
	{
	ASSERT(m_pluralRules);

	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (!std::isfinite(value))
	return jsNontrivialString(vm, "other"_s);

	UErrorCode status = U_ZERO_ERROR;

	#if HAVE(ICU_U_NUMBER_FORMATTER)
	auto formattedNumber = std::unique_ptr<UFormattedNumber, ICUDeleter<unumf_closeResult>>(unumf_openResult(&status));
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select plural value"_s);
	unumf_formatDouble(m_numberFormatter.get(), value, formattedNumber.get(), &status);
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select plural value"_s);
	Vector<UChar, 32> buffer;
	status = callBufferProducingFunction(uplrules_selectFormatted, m_pluralRules.get(), formattedNumber.get(), buffer);
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select plural value"_s);
	return jsString(vm, String(WTFMove(buffer)));
	#else
	Vector<UChar, 8> result(8);
	auto length = uplrules_selectWithFormat(m_pluralRules.get(), value, m_numberFormat.get(), result.data(), result.size(), &status);
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select plural value"_s);

	return jsString(vm, String(result.data(), length));
	#endif
	}

	#if HAVE(ICU_U_NUMBER_RANGE_FORMATTER)
	JSValue IntlPluralRules::selectRange(JSGlobalObject* globalObject, double start, double end) const
	{
	ASSERT(m_numberRangeFormatter);

	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (std::isnan(start) \|\| std::isnan(end))
	return throwRangeError(globalObject, scope, "Passed numbers are out of range"_s);

	if (end < start)
	return throwRangeError(globalObject, scope, "start is larger than end"_s);

	if (isNegativeZero(end) && start >= 0)
	return throwRangeError(globalObject, scope, "start is larger than end"_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 select range of plural value"_s);

	unumrf_formatDoubleRange(m_numberRangeFormatter.get(), start, end, range.get(), &status);
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select range of plural value"_s);

	Vector<UChar, 32> buffer;
	status = callBufferProducingFunction(uplrules_selectForRange, m_pluralRules.get(), range.get(), buffer);
	if (U_FAILURE(status))
	return throwTypeError(globalObject, scope, "failed to select plural value"_s);
	return jsString(vm, String(WTFMove(buffer)));
	}
	#endif

	} // namespace JSC