src/runtime/runtime-i18n.cc

   1 // Copyright 2014 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5
   6 #ifdef V8_I18N_SUPPORT
   7 #include "src/runtime/runtime-utils.h"
   8
   9 #include "src/api.h"
  10 #include "src/api-natives.h"
  11 #include "src/arguments.h"
  12 #include "src/factory.h"
  13 #include "src/i18n.h"
  14 #include "src/messages.h"
  15
  16 #include "unicode/brkiter.h"
  17 #include "unicode/calendar.h"
  18 #include "unicode/coll.h"
  19 #include "unicode/curramt.h"
  20 #include "unicode/datefmt.h"
  21 #include "unicode/dcfmtsym.h"
  22 #include "unicode/decimfmt.h"
  23 #include "unicode/dtfmtsym.h"
  24 #include "unicode/dtptngen.h"
  25 #include "unicode/locid.h"
  26 #include "unicode/numfmt.h"
  27 #include "unicode/numsys.h"
  28 #include "unicode/rbbi.h"
  29 #include "unicode/smpdtfmt.h"
  30 #include "unicode/timezone.h"
  31 #include "unicode/uchar.h"
  32 #include "unicode/ucol.h"
  33 #include "unicode/ucurr.h"
  34 #include "unicode/uloc.h"
  35 #include "unicode/unum.h"
  36 #include "unicode/uversion.h"
  37
  38
  39 namespace v8 {
  40 namespace internal {
  41
  42 RUNTIME_FUNCTION(Runtime_CanonicalizeLanguageTag) {
  43   HandleScope scope(isolate);
  44   Factory* factory = isolate->factory();
  45
  46   DCHECK(args.length() == 1);
  47   CONVERT_ARG_HANDLE_CHECKED(String, locale_id_str, 0);
  48
  49   v8::String::Utf8Value locale_id(v8::Utils::ToLocal(locale_id_str));
  50
  51   // Return value which denotes invalid language tag.
  52   const char* const kInvalidTag = "invalid-tag";
  53
  54   UErrorCode error = U_ZERO_ERROR;
  55   char icu_result[ULOC_FULLNAME_CAPACITY];
  56   int icu_length = 0;
  57
  58   uloc_forLanguageTag(*locale_id, icu_result, ULOC_FULLNAME_CAPACITY,
  59                       &icu_length, &error);
  60   if (U_FAILURE(error) || icu_length == 0) {
  61     return *factory->NewStringFromAsciiChecked(kInvalidTag);
  62   }
  63
  64   char result[ULOC_FULLNAME_CAPACITY];
  65
  66   // Force strict BCP47 rules.
  67   uloc_toLanguageTag(icu_result, result, ULOC_FULLNAME_CAPACITY, TRUE, &error);
  68
  69   if (U_FAILURE(error)) {
  70     return *factory->NewStringFromAsciiChecked(kInvalidTag);
  71   }
  72
  73   return *factory->NewStringFromAsciiChecked(result);
  74 }
  75
  76
  77 RUNTIME_FUNCTION(Runtime_AvailableLocalesOf) {
  78   HandleScope scope(isolate);
  79   Factory* factory = isolate->factory();
  80
  81   DCHECK(args.length() == 1);
  82   CONVERT_ARG_HANDLE_CHECKED(String, service, 0);
  83
  84   const icu::Locale* available_locales = NULL;
  85   int32_t count = 0;
  86
  87   if (service->IsUtf8EqualTo(CStrVector("collator"))) {
  88     available_locales = icu::Collator::getAvailableLocales(count);
  89   } else if (service->IsUtf8EqualTo(CStrVector("numberformat"))) {
  90     available_locales = icu::NumberFormat::getAvailableLocales(count);
  91   } else if (service->IsUtf8EqualTo(CStrVector("dateformat"))) {
  92     available_locales = icu::DateFormat::getAvailableLocales(count);
  93   } else if (service->IsUtf8EqualTo(CStrVector("breakiterator"))) {
  94     available_locales = icu::BreakIterator::getAvailableLocales(count);
  95   }
  96
  97   UErrorCode error = U_ZERO_ERROR;
  98   char result[ULOC_FULLNAME_CAPACITY];
  99   Handle<JSObject> locales = factory->NewJSObject(isolate->object_function());
 100
 101   for (int32_t i = 0; i < count; ++i) {
 102     const char* icu_name = available_locales[i].getName();
 103
 104     error = U_ZERO_ERROR;
 105     // No need to force strict BCP47 rules.
 106     uloc_toLanguageTag(icu_name, result, ULOC_FULLNAME_CAPACITY, FALSE, &error);
 107     if (U_FAILURE(error)) {
 108       // This shouldn't happen, but lets not break the user.
 109       continue;
 110     }
 111
 112     RETURN_FAILURE_ON_EXCEPTION(
 113         isolate, JSObject::SetOwnPropertyIgnoreAttributes(
 114                      locales, factory->NewStringFromAsciiChecked(result),
 115                      factory->NewNumber(i), NONE));
 116   }
 117
 118   return *locales;
 119 }
 120
 121
 122 RUNTIME_FUNCTION(Runtime_GetDefaultICULocale) {
 123   HandleScope scope(isolate);
 124   Factory* factory = isolate->factory();
 125
 126   DCHECK(args.length() == 0);
 127
 128   icu::Locale default_locale;
 129
 130   // Set the locale
 131   char result[ULOC_FULLNAME_CAPACITY];
 132   UErrorCode status = U_ZERO_ERROR;
 133   uloc_toLanguageTag(default_locale.getName(), result, ULOC_FULLNAME_CAPACITY,
 134                      FALSE, &status);
 135   if (U_SUCCESS(status)) {
 136     return *factory->NewStringFromAsciiChecked(result);
 137   }
 138
 139   return *factory->NewStringFromStaticChars("und");
 140 }
 141
 142
 143 RUNTIME_FUNCTION(Runtime_GetLanguageTagVariants) {
 144   HandleScope scope(isolate);
 145   Factory* factory = isolate->factory();
 146
 147   DCHECK(args.length() == 1);
 148
 149   CONVERT_ARG_HANDLE_CHECKED(JSArray, input, 0);
 150
 151   uint32_t length = static_cast<uint32_t>(input->length()->Number());
 152   // Set some limit to prevent fuzz tests from going OOM.
 153   // Can be bumped when callers' requirements change.
 154   RUNTIME_ASSERT(length < 100);
 155   Handle<FixedArray> output = factory->NewFixedArray(length);
 156   Handle<Name> maximized = factory->NewStringFromStaticChars("maximized");
 157   Handle<Name> base = factory->NewStringFromStaticChars("base");
 158   for (unsigned int i = 0; i < length; ++i) {
 159     Handle<Object> locale_id;
 160     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, locale_id,
 161                                        Object::GetElement(isolate, input, i));
 162     if (!locale_id->IsString()) {
 163       return isolate->Throw(*factory->illegal_argument_string());
 164     }
 165
 166     v8::String::Utf8Value utf8_locale_id(
 167         v8::Utils::ToLocal(Handle<String>::cast(locale_id)));
 168
 169     UErrorCode error = U_ZERO_ERROR;
 170
 171     // Convert from BCP47 to ICU format.
 172     // de-DE-u-co-phonebk -> de_DE@collation=phonebook
 173     char icu_locale[ULOC_FULLNAME_CAPACITY];
 174     int icu_locale_length = 0;
 175     uloc_forLanguageTag(*utf8_locale_id, icu_locale, ULOC_FULLNAME_CAPACITY,
 176                         &icu_locale_length, &error);
 177     if (U_FAILURE(error) || icu_locale_length == 0) {
 178       return isolate->Throw(*factory->illegal_argument_string());
 179     }
 180
 181     // Maximize the locale.
 182     // de_DE@collation=phonebook -> de_Latn_DE@collation=phonebook
 183     char icu_max_locale[ULOC_FULLNAME_CAPACITY];
 184     uloc_addLikelySubtags(icu_locale, icu_max_locale, ULOC_FULLNAME_CAPACITY,
 185                           &error);
 186
 187     // Remove extensions from maximized locale.
 188     // de_Latn_DE@collation=phonebook -> de_Latn_DE
 189     char icu_base_max_locale[ULOC_FULLNAME_CAPACITY];
 190     uloc_getBaseName(icu_max_locale, icu_base_max_locale,
 191                      ULOC_FULLNAME_CAPACITY, &error);
 192
 193     // Get original name without extensions.
 194     // de_DE@collation=phonebook -> de_DE
 195     char icu_base_locale[ULOC_FULLNAME_CAPACITY];
 196     uloc_getBaseName(icu_locale, icu_base_locale, ULOC_FULLNAME_CAPACITY,
 197                      &error);
 198
 199     // Convert from ICU locale format to BCP47 format.
 200     // de_Latn_DE -> de-Latn-DE
 201     char base_max_locale[ULOC_FULLNAME_CAPACITY];
 202     uloc_toLanguageTag(icu_base_max_locale, base_max_locale,
 203                        ULOC_FULLNAME_CAPACITY, FALSE, &error);
 204
 205     // de_DE -> de-DE
 206     char base_locale[ULOC_FULLNAME_CAPACITY];
 207     uloc_toLanguageTag(icu_base_locale, base_locale, ULOC_FULLNAME_CAPACITY,
 208                        FALSE, &error);
 209
 210     if (U_FAILURE(error)) {
 211       return isolate->Throw(*factory->illegal_argument_string());
 212     }
 213
 214     Handle<JSObject> result = factory->NewJSObject(isolate->object_function());
 215     Handle<String> value = factory->NewStringFromAsciiChecked(base_max_locale);
 216     JSObject::AddProperty(result, maximized, value, NONE);
 217     value = factory->NewStringFromAsciiChecked(base_locale);
 218     JSObject::AddProperty(result, base, value, NONE);
 219     output->set(i, *result);
 220   }
 221
 222   Handle<JSArray> result = factory->NewJSArrayWithElements(output);
 223   result->set_length(Smi::FromInt(length));
 224   return *result;
 225 }
 226
 227
 228 RUNTIME_FUNCTION(Runtime_IsInitializedIntlObject) {
 229   HandleScope scope(isolate);
 230
 231   DCHECK(args.length() == 1);
 232
 233   CONVERT_ARG_HANDLE_CHECKED(Object, input, 0);
 234
 235   if (!input->IsJSObject()) return isolate->heap()->false_value();
 236   Handle<JSObject> obj = Handle<JSObject>::cast(input);
 237
 238   Handle<Symbol> marker = isolate->factory()->intl_initialized_marker_symbol();
 239   Handle<Object> tag = JSReceiver::GetDataProperty(obj, marker);
 240   return isolate->heap()->ToBoolean(!tag->IsUndefined());
 241 }
 242
 243
 244 RUNTIME_FUNCTION(Runtime_IsInitializedIntlObjectOfType) {
 245   HandleScope scope(isolate);
 246
 247   DCHECK(args.length() == 2);
 248
 249   CONVERT_ARG_HANDLE_CHECKED(Object, input, 0);
 250   CONVERT_ARG_HANDLE_CHECKED(String, expected_type, 1);
 251
 252   if (!input->IsJSObject()) return isolate->heap()->false_value();
 253   Handle<JSObject> obj = Handle<JSObject>::cast(input);
 254
 255   Handle<Symbol> marker = isolate->factory()->intl_initialized_marker_symbol();
 256   Handle<Object> tag = JSReceiver::GetDataProperty(obj, marker);
 257   return isolate->heap()->ToBoolean(tag->IsString() &&
 258                                     String::cast(*tag)->Equals(*expected_type));
 259 }
 260
 261
 262 RUNTIME_FUNCTION(Runtime_MarkAsInitializedIntlObjectOfType) {
 263   HandleScope scope(isolate);
 264
 265   DCHECK(args.length() == 3);
 266
 267   CONVERT_ARG_HANDLE_CHECKED(JSObject, input, 0);
 268   CONVERT_ARG_HANDLE_CHECKED(String, type, 1);
 269   CONVERT_ARG_HANDLE_CHECKED(JSObject, impl, 2);
 270
 271   Handle<Symbol> marker = isolate->factory()->intl_initialized_marker_symbol();
 272   JSObject::SetProperty(input, marker, type, STRICT).Assert();
 273
 274   marker = isolate->factory()->intl_impl_object_symbol();
 275   JSObject::SetProperty(input, marker, impl, STRICT).Assert();
 276
 277   return isolate->heap()->undefined_value();
 278 }
 279
 280
 281 RUNTIME_FUNCTION(Runtime_GetImplFromInitializedIntlObject) {
 282   HandleScope scope(isolate);
 283
 284   DCHECK(args.length() == 1);
 285
 286   CONVERT_ARG_HANDLE_CHECKED(JSObject, input, 0);
 287
 288   if (!input->IsJSObject()) {
 289     THROW_NEW_ERROR_RETURN_FAILURE(
 290         isolate, NewTypeError(MessageTemplate::kNotIntlObject, input));
 291   }
 292
 293   Handle<JSObject> obj = Handle<JSObject>::cast(input);
 294
 295   Handle<Symbol> marker = isolate->factory()->intl_impl_object_symbol();
 296
 297   Handle<Object> impl = JSReceiver::GetDataProperty(obj, marker);
 298   if (impl->IsTheHole()) {
 299     THROW_NEW_ERROR_RETURN_FAILURE(
 300         isolate, NewTypeError(MessageTemplate::kNotIntlObject, obj));
 301   }
 302   return *impl;
 303 }
 304
 305
 306 RUNTIME_FUNCTION(Runtime_CreateDateTimeFormat) {
 307   HandleScope scope(isolate);
 308
 309   DCHECK(args.length() == 3);
 310
 311   CONVERT_ARG_HANDLE_CHECKED(String, locale, 0);
 312   CONVERT_ARG_HANDLE_CHECKED(JSObject, options, 1);
 313   CONVERT_ARG_HANDLE_CHECKED(JSObject, resolved, 2);
 314
 315   Handle<ObjectTemplateInfo> date_format_template = I18N::GetTemplate(isolate);
 316
 317   // Create an empty object wrapper.
 318   Handle<JSObject> local_object;
 319   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 320       isolate, local_object,
 321       ApiNatives::InstantiateObject(date_format_template));
 322
 323   // Set date time formatter as internal field of the resulting JS object.
 324   icu::SimpleDateFormat* date_format =
 325       DateFormat::InitializeDateTimeFormat(isolate, locale, options, resolved);
 326
 327   if (!date_format) return isolate->ThrowIllegalOperation();
 328
 329   local_object->SetInternalField(0, reinterpret_cast<Smi*>(date_format));
 330
 331   Factory* factory = isolate->factory();
 332   Handle<String> key = factory->NewStringFromStaticChars("dateFormat");
 333   Handle<String> value = factory->NewStringFromStaticChars("valid");
 334   JSObject::AddProperty(local_object, key, value, NONE);
 335
 336   // Make object handle weak so we can delete the data format once GC kicks in.
 337   Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
 338   GlobalHandles::MakeWeak(wrapper.location(),
 339                           reinterpret_cast<void*>(wrapper.location()),
 340                           DateFormat::DeleteDateFormat);
 341   return *local_object;
 342 }
 343
 344
 345 RUNTIME_FUNCTION(Runtime_InternalDateFormat) {
 346   HandleScope scope(isolate);
 347
 348   DCHECK(args.length() == 2);
 349
 350   CONVERT_ARG_HANDLE_CHECKED(JSObject, date_format_holder, 0);
 351   CONVERT_ARG_HANDLE_CHECKED(JSDate, date, 1);
 352
 353   Handle<Object> value;
 354   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, value,
 355                                      Execution::ToNumber(isolate, date));
 356
 357   icu::SimpleDateFormat* date_format =
 358       DateFormat::UnpackDateFormat(isolate, date_format_holder);
 359   if (!date_format) return isolate->ThrowIllegalOperation();
 360
 361   icu::UnicodeString result;
 362   date_format->format(value->Number(), result);
 363
 364   Handle<String> result_str;
 365   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 366       isolate, result_str,
 367       isolate->factory()->NewStringFromTwoByte(Vector<const uint16_t>(
 368           reinterpret_cast<const uint16_t*>(result.getBuffer()),
 369           result.length())));
 370   return *result_str;
 371 }
 372
 373
 374 RUNTIME_FUNCTION(Runtime_InternalDateParse) {
 375   HandleScope scope(isolate);
 376
 377   DCHECK(args.length() == 2);
 378
 379   CONVERT_ARG_HANDLE_CHECKED(JSObject, date_format_holder, 0);
 380   CONVERT_ARG_HANDLE_CHECKED(String, date_string, 1);
 381
 382   v8::String::Utf8Value utf8_date(v8::Utils::ToLocal(date_string));
 383   icu::UnicodeString u_date(icu::UnicodeString::fromUTF8(*utf8_date));
 384   icu::SimpleDateFormat* date_format =
 385       DateFormat::UnpackDateFormat(isolate, date_format_holder);
 386   if (!date_format) return isolate->ThrowIllegalOperation();
 387
 388   UErrorCode status = U_ZERO_ERROR;
 389   UDate date = date_format->parse(u_date, status);
 390   if (U_FAILURE(status)) return isolate->heap()->undefined_value();
 391
 392   Handle<Object> result;
 393   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 394       isolate, result, Execution::NewDate(isolate, static_cast<double>(date)));
 395   DCHECK(result->IsJSDate());
 396   return *result;
 397 }
 398
 399
 400 RUNTIME_FUNCTION(Runtime_CreateNumberFormat) {
 401   HandleScope scope(isolate);
 402
 403   DCHECK(args.length() == 3);
 404
 405   CONVERT_ARG_HANDLE_CHECKED(String, locale, 0);
 406   CONVERT_ARG_HANDLE_CHECKED(JSObject, options, 1);
 407   CONVERT_ARG_HANDLE_CHECKED(JSObject, resolved, 2);
 408
 409   Handle<ObjectTemplateInfo> number_format_template =
 410       I18N::GetTemplate(isolate);
 411
 412   // Create an empty object wrapper.
 413   Handle<JSObject> local_object;
 414   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 415       isolate, local_object,
 416       ApiNatives::InstantiateObject(number_format_template));
 417
 418   // Set number formatter as internal field of the resulting JS object.
 419   icu::DecimalFormat* number_format =
 420       NumberFormat::InitializeNumberFormat(isolate, locale, options, resolved);
 421
 422   if (!number_format) return isolate->ThrowIllegalOperation();
 423
 424   local_object->SetInternalField(0, reinterpret_cast<Smi*>(number_format));
 425
 426   Factory* factory = isolate->factory();
 427   Handle<String> key = factory->NewStringFromStaticChars("numberFormat");
 428   Handle<String> value = factory->NewStringFromStaticChars("valid");
 429   JSObject::AddProperty(local_object, key, value, NONE);
 430
 431   Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
 432   GlobalHandles::MakeWeak(wrapper.location(),
 433                           reinterpret_cast<void*>(wrapper.location()),
 434                           NumberFormat::DeleteNumberFormat);
 435   return *local_object;
 436 }
 437
 438
 439 RUNTIME_FUNCTION(Runtime_InternalNumberFormat) {
 440   HandleScope scope(isolate);
 441
 442   DCHECK(args.length() == 2);
 443
 444   CONVERT_ARG_HANDLE_CHECKED(JSObject, number_format_holder, 0);
 445   CONVERT_ARG_HANDLE_CHECKED(Object, number, 1);
 446
 447   Handle<Object> value;
 448   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, value,
 449                                      Execution::ToNumber(isolate, number));
 450
 451   icu::DecimalFormat* number_format =
 452       NumberFormat::UnpackNumberFormat(isolate, number_format_holder);
 453   if (!number_format) return isolate->ThrowIllegalOperation();
 454
 455   icu::UnicodeString result;
 456   number_format->format(value->Number(), result);
 457
 458   Handle<String> result_str;
 459   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 460       isolate, result_str,
 461       isolate->factory()->NewStringFromTwoByte(Vector<const uint16_t>(
 462           reinterpret_cast<const uint16_t*>(result.getBuffer()),
 463           result.length())));
 464   return *result_str;
 465 }
 466
 467
 468 RUNTIME_FUNCTION(Runtime_InternalNumberParse) {
 469   HandleScope scope(isolate);
 470
 471   DCHECK(args.length() == 2);
 472
 473   CONVERT_ARG_HANDLE_CHECKED(JSObject, number_format_holder, 0);
 474   CONVERT_ARG_HANDLE_CHECKED(String, number_string, 1);
 475
 476   v8::String::Utf8Value utf8_number(v8::Utils::ToLocal(number_string));
 477   icu::UnicodeString u_number(icu::UnicodeString::fromUTF8(*utf8_number));
 478   icu::DecimalFormat* number_format =
 479       NumberFormat::UnpackNumberFormat(isolate, number_format_holder);
 480   if (!number_format) return isolate->ThrowIllegalOperation();
 481
 482   UErrorCode status = U_ZERO_ERROR;
 483   icu::Formattable result;
 484   // ICU 4.6 doesn't support parseCurrency call. We need to wait for ICU49
 485   // to be part of Chrome.
 486   // TODO(cira): Include currency parsing code using parseCurrency call.
 487   // We need to check if the formatter parses all currencies or only the
 488   // one it was constructed with (it will impact the API - how to return ISO
 489   // code and the value).
 490   number_format->parse(u_number, result, status);
 491   if (U_FAILURE(status)) return isolate->heap()->undefined_value();
 492
 493   switch (result.getType()) {
 494     case icu::Formattable::kDouble:
 495       return *isolate->factory()->NewNumber(result.getDouble());
 496     case icu::Formattable::kLong:
 497       return *isolate->factory()->NewNumberFromInt(result.getLong());
 498     case icu::Formattable::kInt64:
 499       return *isolate->factory()->NewNumber(
 500           static_cast<double>(result.getInt64()));
 501     default:
 502       return isolate->heap()->undefined_value();
 503   }
 504 }
 505
 506
 507 RUNTIME_FUNCTION(Runtime_CreateCollator) {
 508   HandleScope scope(isolate);
 509
 510   DCHECK(args.length() == 3);
 511
 512   CONVERT_ARG_HANDLE_CHECKED(String, locale, 0);
 513   CONVERT_ARG_HANDLE_CHECKED(JSObject, options, 1);
 514   CONVERT_ARG_HANDLE_CHECKED(JSObject, resolved, 2);
 515
 516   Handle<ObjectTemplateInfo> collator_template = I18N::GetTemplate(isolate);
 517
 518   // Create an empty object wrapper.
 519   Handle<JSObject> local_object;
 520   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 521       isolate, local_object, ApiNatives::InstantiateObject(collator_template));
 522
 523   // Set collator as internal field of the resulting JS object.
 524   icu::Collator* collator =
 525       Collator::InitializeCollator(isolate, locale, options, resolved);
 526
 527   if (!collator) return isolate->ThrowIllegalOperation();
 528
 529   local_object->SetInternalField(0, reinterpret_cast<Smi*>(collator));
 530
 531   Factory* factory = isolate->factory();
 532   Handle<String> key = factory->NewStringFromStaticChars("collator");
 533   Handle<String> value = factory->NewStringFromStaticChars("valid");
 534   JSObject::AddProperty(local_object, key, value, NONE);
 535
 536   Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
 537   GlobalHandles::MakeWeak(wrapper.location(),
 538                           reinterpret_cast<void*>(wrapper.location()),
 539                           Collator::DeleteCollator);
 540   return *local_object;
 541 }
 542
 543
 544 RUNTIME_FUNCTION(Runtime_InternalCompare) {
 545   HandleScope scope(isolate);
 546
 547   DCHECK(args.length() == 3);
 548
 549   CONVERT_ARG_HANDLE_CHECKED(JSObject, collator_holder, 0);
 550   CONVERT_ARG_HANDLE_CHECKED(String, string1, 1);
 551   CONVERT_ARG_HANDLE_CHECKED(String, string2, 2);
 552
 553   icu::Collator* collator = Collator::UnpackCollator(isolate, collator_holder);
 554   if (!collator) return isolate->ThrowIllegalOperation();
 555
 556   v8::String::Value string_value1(v8::Utils::ToLocal(string1));
 557   v8::String::Value string_value2(v8::Utils::ToLocal(string2));
 558   const UChar* u_string1 = reinterpret_cast<const UChar*>(*string_value1);
 559   const UChar* u_string2 = reinterpret_cast<const UChar*>(*string_value2);
 560   UErrorCode status = U_ZERO_ERROR;
 561   UCollationResult result =
 562       collator->compare(u_string1, string_value1.length(), u_string2,
 563                         string_value2.length(), status);
 564   if (U_FAILURE(status)) return isolate->ThrowIllegalOperation();
 565
 566   return *isolate->factory()->NewNumberFromInt(result);
 567 }
 568
 569
 570 RUNTIME_FUNCTION(Runtime_StringNormalize) {
 571   HandleScope scope(isolate);
 572   static const UNormalizationMode normalizationForms[] = {
 573       UNORM_NFC, UNORM_NFD, UNORM_NFKC, UNORM_NFKD};
 574
 575   DCHECK(args.length() == 2);
 576
 577   CONVERT_ARG_HANDLE_CHECKED(String, stringValue, 0);
 578   CONVERT_NUMBER_CHECKED(int, form_id, Int32, args[1]);
 579   RUNTIME_ASSERT(form_id >= 0 &&
 580                  static_cast<size_t>(form_id) < arraysize(normalizationForms));
 581
 582   v8::String::Value string_value(v8::Utils::ToLocal(stringValue));
 583   const UChar* u_value = reinterpret_cast<const UChar*>(*string_value);
 584
 585   // TODO(mnita): check Normalizer2 (not available in ICU 46)
 586   UErrorCode status = U_ZERO_ERROR;
 587   icu::UnicodeString result;
 588   icu::Normalizer::normalize(u_value, normalizationForms[form_id], 0, result,
 589                              status);
 590   if (U_FAILURE(status)) {
 591     return isolate->heap()->undefined_value();
 592   }
 593
 594   Handle<String> result_str;
 595   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 596       isolate, result_str,
 597       isolate->factory()->NewStringFromTwoByte(Vector<const uint16_t>(
 598           reinterpret_cast<const uint16_t*>(result.getBuffer()),
 599           result.length())));
 600   return *result_str;
 601 }
 602
 603
 604 RUNTIME_FUNCTION(Runtime_CreateBreakIterator) {
 605   HandleScope scope(isolate);
 606
 607   DCHECK(args.length() == 3);
 608
 609   CONVERT_ARG_HANDLE_CHECKED(String, locale, 0);
 610   CONVERT_ARG_HANDLE_CHECKED(JSObject, options, 1);
 611   CONVERT_ARG_HANDLE_CHECKED(JSObject, resolved, 2);
 612
 613   Handle<ObjectTemplateInfo> break_iterator_template =
 614       I18N::GetTemplate2(isolate);
 615
 616   // Create an empty object wrapper.
 617   Handle<JSObject> local_object;
 618   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
 619       isolate, local_object,
 620       ApiNatives::InstantiateObject(break_iterator_template));
 621
 622   // Set break iterator as internal field of the resulting JS object.
 623   icu::BreakIterator* break_iterator = BreakIterator::InitializeBreakIterator(
 624       isolate, locale, options, resolved);
 625
 626   if (!break_iterator) return isolate->ThrowIllegalOperation();
 627
 628   local_object->SetInternalField(0, reinterpret_cast<Smi*>(break_iterator));
 629   // Make sure that the pointer to adopted text is NULL.
 630   local_object->SetInternalField(1, static_cast<Smi*>(nullptr));
 631
 632   Factory* factory = isolate->factory();
 633   Handle<String> key = factory->NewStringFromStaticChars("breakIterator");
 634   Handle<String> value = factory->NewStringFromStaticChars("valid");
 635   JSObject::AddProperty(local_object, key, value, NONE);
 636
 637   // Make object handle weak so we can delete the break iterator once GC kicks
 638   // in.
 639   Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
 640   GlobalHandles::MakeWeak(wrapper.location(),
 641                           reinterpret_cast<void*>(wrapper.location()),
 642                           BreakIterator::DeleteBreakIterator);
 643   return *local_object;
 644 }
 645
 646
 647 RUNTIME_FUNCTION(Runtime_BreakIteratorAdoptText) {
 648   HandleScope scope(isolate);
 649
 650   DCHECK(args.length() == 2);
 651
 652   CONVERT_ARG_HANDLE_CHECKED(JSObject, break_iterator_holder, 0);
 653   CONVERT_ARG_HANDLE_CHECKED(String, text, 1);
 654
 655   icu::BreakIterator* break_iterator =
 656       BreakIterator::UnpackBreakIterator(isolate, break_iterator_holder);
 657   if (!break_iterator) return isolate->ThrowIllegalOperation();
 658
 659   icu::UnicodeString* u_text = reinterpret_cast<icu::UnicodeString*>(
 660       break_iterator_holder->GetInternalField(1));
 661   delete u_text;
 662
 663   v8::String::Value text_value(v8::Utils::ToLocal(text));
 664   u_text = new icu::UnicodeString(reinterpret_cast<const UChar*>(*text_value),
 665                                   text_value.length());
 666   break_iterator_holder->SetInternalField(1, reinterpret_cast<Smi*>(u_text));
 667
 668   break_iterator->setText(*u_text);
 669
 670   return isolate->heap()->undefined_value();
 671 }
 672
 673
 674 RUNTIME_FUNCTION(Runtime_BreakIteratorFirst) {
 675   HandleScope scope(isolate);
 676
 677   DCHECK(args.length() == 1);
 678
 679   CONVERT_ARG_HANDLE_CHECKED(JSObject, break_iterator_holder, 0);
 680
 681   icu::BreakIterator* break_iterator =
 682       BreakIterator::UnpackBreakIterator(isolate, break_iterator_holder);
 683   if (!break_iterator) return isolate->ThrowIllegalOperation();
 684
 685   return *isolate->factory()->NewNumberFromInt(break_iterator->first());
 686 }
 687
 688
 689 RUNTIME_FUNCTION(Runtime_BreakIteratorNext) {
 690   HandleScope scope(isolate);
 691
 692   DCHECK(args.length() == 1);
 693
 694   CONVERT_ARG_HANDLE_CHECKED(JSObject, break_iterator_holder, 0);
 695
 696   icu::BreakIterator* break_iterator =
 697       BreakIterator::UnpackBreakIterator(isolate, break_iterator_holder);
 698   if (!break_iterator) return isolate->ThrowIllegalOperation();
 699
 700   return *isolate->factory()->NewNumberFromInt(break_iterator->next());
 701 }
 702
 703
 704 RUNTIME_FUNCTION(Runtime_BreakIteratorCurrent) {
 705   HandleScope scope(isolate);
 706
 707   DCHECK(args.length() == 1);
 708
 709   CONVERT_ARG_HANDLE_CHECKED(JSObject, break_iterator_holder, 0);
 710
 711   icu::BreakIterator* break_iterator =
 712       BreakIterator::UnpackBreakIterator(isolate, break_iterator_holder);
 713   if (!break_iterator) return isolate->ThrowIllegalOperation();
 714
 715   return *isolate->factory()->NewNumberFromInt(break_iterator->current());
 716 }
 717
 718
 719 RUNTIME_FUNCTION(Runtime_BreakIteratorBreakType) {
 720   HandleScope scope(isolate);
 721
 722   DCHECK(args.length() == 1);
 723
 724   CONVERT_ARG_HANDLE_CHECKED(JSObject, break_iterator_holder, 0);
 725
 726   icu::BreakIterator* break_iterator =
 727       BreakIterator::UnpackBreakIterator(isolate, break_iterator_holder);
 728   if (!break_iterator) return isolate->ThrowIllegalOperation();
 729
 730   // TODO(cira): Remove cast once ICU fixes base BreakIterator class.
 731   icu::RuleBasedBreakIterator* rule_based_iterator =
 732       static_cast<icu::RuleBasedBreakIterator*>(break_iterator);
 733   int32_t status = rule_based_iterator->getRuleStatus();
 734   // Keep return values in sync with JavaScript BreakType enum.
 735   if (status >= UBRK_WORD_NONE && status < UBRK_WORD_NONE_LIMIT) {
 736     return *isolate->factory()->NewStringFromStaticChars("none");
 737   } else if (status >= UBRK_WORD_NUMBER && status < UBRK_WORD_NUMBER_LIMIT) {
 738     return *isolate->factory()->number_string();
 739   } else if (status >= UBRK_WORD_LETTER && status < UBRK_WORD_LETTER_LIMIT) {
 740     return *isolate->factory()->NewStringFromStaticChars("letter");
 741   } else if (status >= UBRK_WORD_KANA && status < UBRK_WORD_KANA_LIMIT) {
 742     return *isolate->factory()->NewStringFromStaticChars("kana");
 743   } else if (status >= UBRK_WORD_IDEO && status < UBRK_WORD_IDEO_LIMIT) {
 744     return *isolate->factory()->NewStringFromStaticChars("ideo");
 745   } else {
 746     return *isolate->factory()->NewStringFromStaticChars("unknown");
 747   }
 748 }
 749 }  // namespace internal
 750 }  // namespace v8
 751
 752 #endif  // V8_I18N_SUPPORT