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/*
* Copyright (C) 2020-2023 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 "IntlSegmenter.h"
#include "IntlObjectInlines.h"
#include "IntlSegments.h"
#include "IntlWorkaround.h"
#include "JSCInlines.h"
#include "ObjectConstructor.h"
namespace JSC {
const ClassInfo IntlSegmenter::s_info = { "Object"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(IntlSegmenter) };
IntlSegmenter* IntlSegmenter::create(VM& vm, Structure* structure)
{
auto* object = new (NotNull, allocateCell<IntlSegmenter>(vm)) IntlSegmenter(vm, structure);
object->finishCreation(vm);
return object;
}
Structure* IntlSegmenter::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
IntlSegmenter::IntlSegmenter(VM& vm, Structure* structure)
: Base(vm, structure)
{
}
// https://tc39.es/proposal-intl-segmenter/#sec-intl.segmenter
void IntlSegmenter::initializeSegmenter(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 = intlGetOptionsObject(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());
auto localeData = [](const String&, RelevantExtensionKey) -> Vector<String> {
return { };
};
const auto& availableLocales = intlSegmenterAvailableLocales();
auto resolved = resolveLocale(globalObject, availableLocales, requestedLocales, localeMatcher, localeOptions, { }, localeData);
m_locale = resolved.locale;
if (m_locale.isEmpty()) {
throwTypeError(globalObject, scope, "failed to initialize Segmenter due to invalid locale"_s);
return;
}
m_granularity = intlOption<Granularity>(globalObject, options, vm.propertyNames->granularity, { { "grapheme"_s, Granularity::Grapheme }, { "word"_s, Granularity::Word }, { "sentence"_s, Granularity::Sentence } }, "granularity must be either \"grapheme\", \"word\", or \"sentence\""_s, Granularity::Grapheme);
RETURN_IF_EXCEPTION(scope, void());
UBreakIteratorType type = UBRK_CHARACTER;
switch (m_granularity) {
case Granularity::Grapheme:
type = UBRK_CHARACTER;
break;
case Granularity::Word:
type = UBRK_WORD;
break;
case Granularity::Sentence:
type = UBRK_SENTENCE;
break;
}
UErrorCode status = U_ZERO_ERROR;
m_segmenter = std::unique_ptr<UBreakIterator, UBreakIteratorDeleter>(ubrk_open(type, m_locale.utf8().data(), nullptr, 0, &status));
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize Segmenter"_s);
return;
}
}
// https://tc39.es/proposal-intl-segmenter/#sec-intl.segmenter.prototype.segment
JSValue IntlSegmenter::segment(JSGlobalObject* globalObject, JSValue stringValue) const
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSString* jsString = stringValue.toString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
auto string = jsString->value(globalObject);
RETURN_IF_EXCEPTION(scope, { });
auto expectedCharacters = string->charactersWithoutNullTermination();
if (!expectedCharacters) {
throwOutOfMemoryError(globalObject, scope);
return { };
}
auto upconvertedCharacters = Box<Vector<UChar>>::create(expectedCharacters.value());
UErrorCode status = U_ZERO_ERROR;
auto segmenter = std::unique_ptr<UBreakIterator, UBreakIteratorDeleter>(cloneUBreakIterator(m_segmenter.get(), &status));
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize Segments"_s);
return { };
}
ubrk_setText(segmenter.get(), upconvertedCharacters->data(), upconvertedCharacters->size(), &status);
if (U_FAILURE(status)) {
throwTypeError(globalObject, scope, "failed to initialize Segments"_s);
return { };
}
return IntlSegments::create(vm, globalObject->segmentsStructure(), WTFMove(segmenter), WTFMove(upconvertedCharacters), jsString, m_granularity);
}
// https://tc39.es/proposal-intl-segmenter/#sec-intl.segmenter.prototype.resolvedoptions
JSObject* IntlSegmenter::resolvedOptions(JSGlobalObject* globalObject) const
{
VM& vm = globalObject->vm();
JSObject* options = constructEmptyObject(globalObject);
options->putDirect(vm, vm.propertyNames->locale, jsString(vm, m_locale));
options->putDirect(vm, vm.propertyNames->granularity, jsNontrivialString(vm, granularityString(m_granularity)));
return options;
}
ASCIILiteral IntlSegmenter::granularityString(Granularity granularity)
{
switch (granularity) {
case Granularity::Grapheme:
return "grapheme"_s;
case Granularity::Word:
return "word"_s;
case Granularity::Sentence:
return "sentence"_s;
}
ASSERT_NOT_REACHED();
return { };
}
JSObject* IntlSegmenter::createSegmentDataObject(JSGlobalObject* globalObject, JSString* string, int32_t startIndex, int32_t endIndex, UBreakIterator& segmenter, Granularity granularity)
{
VM& vm = globalObject->vm();
JSObject* result = constructEmptyObject(globalObject);
result->putDirect(vm, vm.propertyNames->segment, jsSubstring(globalObject, string, startIndex, endIndex - startIndex));
result->putDirect(vm, vm.propertyNames->index, jsNumber(startIndex));
result->putDirect(vm, vm.propertyNames->input, string);
if (granularity == IntlSegmenter::Granularity::Word) {
int32_t ruleStatus = ubrk_getRuleStatus(&segmenter);
result->putDirect(vm, vm.propertyNames->isWordLike, jsBoolean(!(ruleStatus >= UBRK_WORD_NONE && ruleStatus <= UBRK_WORD_NONE_LIMIT)));
}
return result;
}
} // namespace JSC
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