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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_INTL_SUPPORT
#error Internationalization is expected to be enabled.
#endif // V8_INTL_SUPPORT
#include "src/objects/js-break-iterator.h"
#include "src/objects/intl-objects-inl.h"
#include "src/objects/intl-objects.h"
#include "src/objects/js-break-iterator-inl.h"
#include "unicode/brkiter.h"
namespace v8 {
namespace internal {
JSV8BreakIterator::Type JSV8BreakIterator::getType(const char* str) {
if (strcmp(str, "character") == 0) return Type::CHARACTER;
if (strcmp(str, "word") == 0) return Type::WORD;
if (strcmp(str, "sentence") == 0) return Type::SENTENCE;
if (strcmp(str, "line") == 0) return Type::LINE;
UNREACHABLE();
}
MaybeHandle<JSV8BreakIterator> JSV8BreakIterator::Initialize(
Isolate* isolate, Handle<JSV8BreakIterator> break_iterator_holder,
Handle<Object> locales, Handle<Object> options_obj) {
Factory* factory = isolate->factory();
Handle<JSReceiver> options;
if (options_obj->IsUndefined(isolate)) {
options = factory->NewJSObjectWithNullProto();
} else {
ASSIGN_RETURN_ON_EXCEPTION(
isolate, options,
Object::ToObject(isolate, options_obj, "Intl.JSV8BreakIterator"),
JSV8BreakIterator);
}
// Extract locale string
Handle<JSObject> r;
ASSIGN_RETURN_ON_EXCEPTION(
isolate, r,
Intl::ResolveLocale(isolate, "breakiterator", locales, options),
JSV8BreakIterator);
Handle<Object> locale_obj =
JSObject::GetDataProperty(r, factory->locale_string());
CHECK(locale_obj->IsString());
Handle<String> locale = Handle<String>::cast(locale_obj);
// Extract type from options
std::unique_ptr<char[]> type_str = nullptr;
std::vector<const char*> type_values = {"character", "word", "sentence",
"line"};
Maybe<bool> maybe_found_type = Intl::GetStringOption(
isolate, options, "type", type_values, "Intl.v8BreakIterator", &type_str);
Type type_enum = Type::WORD;
MAYBE_RETURN(maybe_found_type, MaybeHandle<JSV8BreakIterator>());
if (maybe_found_type.FromJust()) {
DCHECK_NOT_NULL(type_str.get());
type_enum = getType(type_str.get());
}
// Construct icu_locale using the locale string
icu::Locale icu_locale = Intl::CreateICULocale(isolate, locale);
DCHECK(!icu_locale.isBogus());
// Construct break_iterator using icu_locale and type
UErrorCode status = U_ZERO_ERROR;
std::unique_ptr<icu::BreakIterator> break_iterator = nullptr;
switch (type_enum) {
case Type::CHARACTER:
break_iterator.reset(
icu::BreakIterator::createCharacterInstance(icu_locale, status));
break;
case Type::SENTENCE:
break_iterator.reset(
icu::BreakIterator::createSentenceInstance(icu_locale, status));
break;
case Type::LINE:
break_iterator.reset(
icu::BreakIterator::createLineInstance(icu_locale, status));
break;
default:
break_iterator.reset(
icu::BreakIterator::createWordInstance(icu_locale, status));
break;
}
// Error handling for break_iterator
if (U_FAILURE(status)) {
FATAL("Failed to create ICU break iterator, are ICU data files missing?");
}
CHECK_NOT_NULL(break_iterator.get());
isolate->CountUsage(v8::Isolate::UseCounterFeature::kBreakIterator);
// Construct managed objects from pointers
Handle<Managed<icu::BreakIterator>> managed_break_iterator =
Managed<icu::BreakIterator>::FromUniquePtr(isolate, 0,
std::move(break_iterator));
Handle<Managed<icu::UnicodeString>> managed_unicode_string =
Managed<icu::UnicodeString>::FromRawPtr(isolate, 0, nullptr);
// Setting fields
break_iterator_holder->set_locale(*locale);
break_iterator_holder->set_type(type_enum);
break_iterator_holder->set_break_iterator(*managed_break_iterator);
break_iterator_holder->set_unicode_string(*managed_unicode_string);
// Return break_iterator_holder
return break_iterator_holder;
}
Handle<JSObject> JSV8BreakIterator::ResolvedOptions(
Isolate* isolate, Handle<JSV8BreakIterator> break_iterator) {
Factory* factory = isolate->factory();
Handle<JSObject> result = factory->NewJSObject(isolate->object_function());
Handle<String> locale(break_iterator->locale(), isolate);
JSObject::AddProperty(isolate, result, factory->locale_string(), locale,
NONE);
JSObject::AddProperty(isolate, result, factory->type_string(),
break_iterator->TypeAsString(), NONE);
return result;
}
void JSV8BreakIterator::AdoptText(
Isolate* isolate, Handle<JSV8BreakIterator> break_iterator_holder,
Handle<String> text) {
icu::UnicodeString* u_text;
int length = text->length();
text = String::Flatten(isolate, text);
{
DisallowHeapAllocation no_gc;
String::FlatContent flat = text->GetFlatContent();
std::unique_ptr<uc16[]> sap;
const UChar* text_value = GetUCharBufferFromFlat(flat, &sap, length);
u_text = new icu::UnicodeString(text_value, length);
}
Handle<Managed<icu::UnicodeString>> new_u_text =
Managed<icu::UnicodeString>::FromRawPtr(isolate, 0, u_text);
break_iterator_holder->set_unicode_string(*new_u_text);
icu::BreakIterator* break_iterator =
break_iterator_holder->break_iterator()->raw();
CHECK_NOT_NULL(break_iterator);
break_iterator->setText(*u_text);
}
Handle<String> JSV8BreakIterator::TypeAsString() const {
switch (type()) {
case Type::CHARACTER:
return GetReadOnlyRoots().character_string_handle();
case Type::WORD:
return GetReadOnlyRoots().word_string_handle();
case Type::SENTENCE:
return GetReadOnlyRoots().sentence_string_handle();
case Type::LINE:
return GetReadOnlyRoots().line_string_handle();
case Type::COUNT:
UNREACHABLE();
}
}
} // namespace internal
} // namespace v8
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