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/*
* Copyright (C) 2016 Yusuke Suzuki <yusuke.suzuki@sslab.ics.keio.ac.jp>
* Copyright (C) 2016 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.
*/
#pragma once
#include "BuiltinNames.h"
#include "IntlObject.h"
#include "JSBoundFunction.h"
#include "JSObject.h"
#include "ObjectConstructor.h"
#include <unicode/ucol.h>
namespace JSC {
template<typename StringType>
static constexpr uint32_t computeTwoCharacters16Code(const StringType& string)
{
return static_cast<uint16_t>(string.characterAt(0)) | (static_cast<uint32_t>(static_cast<uint16_t>(string.characterAt(1))) << 16);
}
template<typename Predicate> String bestAvailableLocale(const String& locale, Predicate predicate)
{
// BestAvailableLocale (availableLocales, locale)
// https://tc39.github.io/ecma402/#sec-bestavailablelocale
String candidate = locale;
while (!candidate.isEmpty()) {
if (predicate(candidate))
return candidate;
size_t pos = candidate.reverseFind('-');
if (pos == notFound)
return String();
if (pos >= 2 && candidate[pos - 2] == '-')
pos -= 2;
candidate = candidate.substring(0, pos);
}
return String();
}
template<typename Constructor, typename Factory>
JSValue constructIntlInstanceWithWorkaroundForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, Constructor* callee, Factory factory)
{
// FIXME: Workaround to provide compatibility with ECMA-402 1.0 call/apply patterns.
// https://bugs.webkit.org/show_bug.cgi?id=153679
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* instance = factory(vm);
RETURN_IF_EXCEPTION(scope, JSValue());
if (thisValue.isObject()) {
JSObject* thisObject = asObject(thisValue);
ASSERT(!callee->template inherits<JSBoundFunction>(vm));
JSValue prototype = callee->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
ASSERT(prototype);
bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
RETURN_IF_EXCEPTION(scope, JSValue());
if (hasInstance) {
PropertyDescriptor descriptor(instance, PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
scope.release();
thisObject->methodTable(vm)->defineOwnProperty(thisObject, globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol(), descriptor, true);
return thisObject;
}
}
return instance;
}
template<typename InstanceType>
InstanceType* unwrapForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, JSObject* constructor)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* thisObject = jsDynamicCast<JSObject*>(vm, thisValue);
if (UNLIKELY(!thisObject))
return nullptr;
auto* instance = jsDynamicCast<InstanceType*>(vm, thisObject);
if (LIKELY(instance))
return instance;
ASSERT(!constructor->template inherits<JSBoundFunction>(vm));
JSValue prototype = constructor->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
ASSERT(prototype);
bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
RETURN_IF_EXCEPTION(scope, nullptr);
if (!hasInstance)
return nullptr;
JSValue value = thisObject->get(globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol());
RETURN_IF_EXCEPTION(scope, nullptr);
return jsDynamicCast<InstanceType*>(vm, value);
}
template<typename ResultType>
ResultType intlOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
{
// GetOption (options, property, type="string", values, fallback)
// https://tc39.github.io/ecma402/#sec-getoption
ASSERT(values.size() > 0);
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (!options)
return fallback;
JSValue value = options->get(globalObject, property);
RETURN_IF_EXCEPTION(scope, { });
if (!value.isUndefined()) {
String stringValue = value.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
for (const auto& entry : values) {
if (entry.first == stringValue)
return entry.second;
}
throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
return { };
}
return fallback;
}
template<typename ResultType>
ResultType intlStringOrBooleanOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, ResultType trueValue, ResultType falsyValue, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
{
// https://tc39.es/proposal-intl-numberformat-v3/out/negotiation/diff.html#sec-getstringorbooleanoption
ASSERT(values.size() > 0);
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (!options)
return fallback;
JSValue value = options->get(globalObject, property);
RETURN_IF_EXCEPTION(scope, { });
if (!value.isUndefined()) {
if (value.isBoolean() && value.asBoolean())
return trueValue;
bool valueBoolean = value.toBoolean(globalObject);
RETURN_IF_EXCEPTION(scope, { });
if (!valueBoolean)
return falsyValue;
String stringValue = value.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
for (const auto& entry : values) {
if (entry.first == stringValue)
return entry.second;
}
throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
return { };
}
return fallback;
}
ALWAYS_INLINE bool canUseASCIIUCADUCETComparison(UChar character)
{
return isASCII(character) && ducetLevel1Weights[character];
}
template<typename CharacterType1, typename CharacterType2>
UCollationResult compareASCIIWithUCADUCETLevel3(const CharacterType1* characters1, const CharacterType2* characters2, unsigned length)
{
for (unsigned position = 0; position < length; ++position) {
auto lhs = characters1[position];
auto rhs = characters2[position];
uint8_t leftWeight = ducetLevel3Weights[lhs];
uint8_t rightWeight = ducetLevel3Weights[rhs];
if (leftWeight == rightWeight)
continue;
return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
}
return UCOL_EQUAL;
}
template<typename CharacterType1, typename CharacterType2>
inline UCollationResult compareASCIIWithUCADUCET(const CharacterType1* characters1, unsigned length1, const CharacterType2* characters2, unsigned length2)
{
bool notSameCharacters = false;
unsigned commonLength = std::min(length1, length2);
for (unsigned position = 0; position < commonLength; ++position) {
auto lhs = characters1[position];
auto rhs = characters2[position];
ASSERT(canUseASCIIUCADUCETComparison(lhs));
ASSERT(canUseASCIIUCADUCETComparison(rhs));
if (lhs == rhs)
continue;
notSameCharacters = true;
uint8_t leftWeight = ducetLevel1Weights[lhs];
uint8_t rightWeight = ducetLevel1Weights[rhs];
if (leftWeight == rightWeight)
continue;
return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
}
if (length1 == length2) {
if (notSameCharacters)
return compareASCIIWithUCADUCETLevel3(characters1, characters2, length1);
return UCOL_EQUAL;
}
return length1 > length2 ? UCOL_GREATER : UCOL_LESS;
}
// https://tc39.es/ecma402/#sec-getoptionsobject
inline JSObject* intlGetOptionsObject(JSGlobalObject* globalObject, JSValue options)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (options.isUndefined())
return nullptr;
if (LIKELY(options.isObject()))
return asObject(options);
throwTypeError(globalObject, scope, "options argument is not an object or undefined"_s);
return nullptr;
}
// https://tc39.es/ecma402/#sec-coerceoptionstoobject
inline JSObject* intlCoerceOptionsToObject(JSGlobalObject* globalObject, JSValue optionsValue)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (optionsValue.isUndefined())
return nullptr;
JSObject* options = optionsValue.toObject(globalObject);
RETURN_IF_EXCEPTION(scope, nullptr);
return options;
}
template<typename Container>
JSArray* createArrayFromStringVector(JSGlobalObject* globalObject, const Container& elements)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
if (!result) {
throwOutOfMemoryError(globalObject, scope);
return nullptr;
}
for (unsigned index = 0; index < elements.size(); ++index) {
result->putDirectIndex(globalObject, index, jsString(vm, elements[index]));
RETURN_IF_EXCEPTION(scope, { });
}
return result;
}
template<typename Container>
JSArray* createArrayFromIntVector(JSGlobalObject* globalObject, const Container& elements)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
if (!result) {
throwOutOfMemoryError(globalObject, scope);
return nullptr;
}
for (unsigned index = 0; index < elements.size(); ++index) {
result->putDirectIndex(globalObject, index, jsNumber(elements[index]));
RETURN_IF_EXCEPTION(scope, { });
}
return result;
}
} // namespace JSC