diff --git a/src/i18n.cc b/src/i18n.cc
new file mode 100644
index 0000000..cae3a32
--- /dev/null
+++ b/src/i18n.cc
@@ -0,0 +1,932 @@
+// Copyright 2013 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.
+// limitations under the License.
+
+#include "src/i18n.h"
+
+#include "unicode/brkiter.h"
+#include "unicode/calendar.h"
+#include "unicode/coll.h"
+#include "unicode/curramt.h"
+#include "unicode/dcfmtsym.h"
+#include "unicode/decimfmt.h"
+#include "unicode/dtfmtsym.h"
+#include "unicode/dtptngen.h"
+#include "unicode/locid.h"
+#include "unicode/numfmt.h"
+#include "unicode/numsys.h"
+#include "unicode/rbbi.h"
+#include "unicode/smpdtfmt.h"
+#include "unicode/timezone.h"
+#include "unicode/uchar.h"
+#include "unicode/ucol.h"
+#include "unicode/ucurr.h"
+#include "unicode/unum.h"
+#include "unicode/uversion.h"
+
+namespace v8 {
+namespace internal {
+
+namespace {
+
+bool ExtractStringSetting(Isolate* isolate,
+                          Handle<JSObject> options,
+                          const char* key,
+                          icu::UnicodeString* setting) {
+  Handle<String> str = isolate->factory()->NewStringFromAsciiChecked(key);
+  Handle<Object> object = Object::GetProperty(options, str).ToHandleChecked();
+  if (object->IsString()) {
+    v8::String::Utf8Value utf8_string(
+        v8::Utils::ToLocal(Handle<String>::cast(object)));
+    *setting = icu::UnicodeString::fromUTF8(*utf8_string);
+    return true;
+  }
+  return false;
+}
+
+
+bool ExtractIntegerSetting(Isolate* isolate,
+                           Handle<JSObject> options,
+                           const char* key,
+                           int32_t* value) {
+  Handle<String> str = isolate->factory()->NewStringFromAsciiChecked(key);
+  Handle<Object> object = Object::GetProperty(options, str).ToHandleChecked();
+  if (object->IsNumber()) {
+    object->ToInt32(value);
+    return true;
+  }
+  return false;
+}
+
+
+bool ExtractBooleanSetting(Isolate* isolate,
+                           Handle<JSObject> options,
+                           const char* key,
+                           bool* value) {
+  Handle<String> str = isolate->factory()->NewStringFromAsciiChecked(key);
+  Handle<Object> object = Object::GetProperty(options, str).ToHandleChecked();
+  if (object->IsBoolean()) {
+    *value = object->BooleanValue();
+    return true;
+  }
+  return false;
+}
+
+
+icu::SimpleDateFormat* CreateICUDateFormat(
+    Isolate* isolate,
+    const icu::Locale& icu_locale,
+    Handle<JSObject> options) {
+  // Create time zone as specified by the user. We have to re-create time zone
+  // since calendar takes ownership.
+  icu::TimeZone* tz = NULL;
+  icu::UnicodeString timezone;
+  if (ExtractStringSetting(isolate, options, "timeZone", &timezone)) {
+    tz = icu::TimeZone::createTimeZone(timezone);
+  } else {
+    tz = icu::TimeZone::createDefault();
+  }
+
+  // Create a calendar using locale, and apply time zone to it.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::Calendar* calendar =
+      icu::Calendar::createInstance(tz, icu_locale, status);
+
+  // Make formatter from skeleton. Calendar and numbering system are added
+  // to the locale as Unicode extension (if they were specified at all).
+  icu::SimpleDateFormat* date_format = NULL;
+  icu::UnicodeString skeleton;
+  if (ExtractStringSetting(isolate, options, "skeleton", &skeleton)) {
+    icu::DateTimePatternGenerator* generator =
+        icu::DateTimePatternGenerator::createInstance(icu_locale, status);
+    icu::UnicodeString pattern;
+    if (U_SUCCESS(status)) {
+      pattern = generator->getBestPattern(skeleton, status);
+      delete generator;
+    }
+
+    date_format = new icu::SimpleDateFormat(pattern, icu_locale, status);
+    if (U_SUCCESS(status)) {
+      date_format->adoptCalendar(calendar);
+    }
+  }
+
+  if (U_FAILURE(status)) {
+    delete calendar;
+    delete date_format;
+    date_format = NULL;
+  }
+
+  return date_format;
+}
+
+
+void SetResolvedDateSettings(Isolate* isolate,
+                             const icu::Locale& icu_locale,
+                             icu::SimpleDateFormat* date_format,
+                             Handle<JSObject> resolved) {
+  Factory* factory = isolate->factory();
+  UErrorCode status = U_ZERO_ERROR;
+  icu::UnicodeString pattern;
+  date_format->toPattern(pattern);
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("pattern"),
+      factory->NewStringFromTwoByte(
+                   Vector<const uint16_t>(
+                       reinterpret_cast<const uint16_t*>(pattern.getBuffer()),
+                       pattern.length())).ToHandleChecked(),
+      SLOPPY).Assert();
+
+  // Set time zone and calendar.
+  const icu::Calendar* calendar = date_format->getCalendar();
+  const char* calendar_name = calendar->getType();
+  JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("calendar"),
+                        factory->NewStringFromAsciiChecked(calendar_name),
+                        SLOPPY).Assert();
+
+  const icu::TimeZone& tz = calendar->getTimeZone();
+  icu::UnicodeString time_zone;
+  tz.getID(time_zone);
+
+  icu::UnicodeString canonical_time_zone;
+  icu::TimeZone::getCanonicalID(time_zone, canonical_time_zone, status);
+  if (U_SUCCESS(status)) {
+    if (canonical_time_zone == UNICODE_STRING_SIMPLE("Etc/GMT")) {
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("timeZone"),
+          factory->NewStringFromStaticChars("UTC"), SLOPPY).Assert();
+    } else {
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("timeZone"),
+          factory->NewStringFromTwoByte(
+                       Vector<const uint16_t>(
+                           reinterpret_cast<const uint16_t*>(
+                               canonical_time_zone.getBuffer()),
+                           canonical_time_zone.length())).ToHandleChecked(),
+          SLOPPY).Assert();
+    }
+  }
+
+  // Ugly hack. ICU doesn't expose numbering system in any way, so we have
+  // to assume that for given locale NumberingSystem constructor produces the
+  // same digits as NumberFormat/Calendar would.
+  status = U_ZERO_ERROR;
+  icu::NumberingSystem* numbering_system =
+      icu::NumberingSystem::createInstance(icu_locale, status);
+  if (U_SUCCESS(status)) {
+    const char* ns = numbering_system->getName();
+    JSObject::SetProperty(
+        resolved, factory->NewStringFromStaticChars("numberingSystem"),
+        factory->NewStringFromAsciiChecked(ns), SLOPPY).Assert();
+  } else {
+    JSObject::SetProperty(resolved,
+                          factory->NewStringFromStaticChars("numberingSystem"),
+                          factory->undefined_value(), SLOPPY).Assert();
+  }
+  delete numbering_system;
+
+  // Set the locale
+  char result[ULOC_FULLNAME_CAPACITY];
+  status = U_ZERO_ERROR;
+  uloc_toLanguageTag(
+      icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status);
+  if (U_SUCCESS(status)) {
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromAsciiChecked(result),
+                          SLOPPY).Assert();
+  } else {
+    // This would never happen, since we got the locale from ICU.
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromStaticChars("und"),
+                          SLOPPY).Assert();
+  }
+}
+
+
+template<int internal_fields, EternalHandles::SingletonHandle field>
+Handle<ObjectTemplateInfo> GetEternal(Isolate* isolate) {
+  if (isolate->eternal_handles()->Exists(field)) {
+    return Handle<ObjectTemplateInfo>::cast(
+        isolate->eternal_handles()->GetSingleton(field));
+  }
+  v8::Local<v8::ObjectTemplate> raw_template =
+      v8::ObjectTemplate::New(reinterpret_cast<v8::Isolate*>(isolate));
+  raw_template->SetInternalFieldCount(internal_fields);
+  return Handle<ObjectTemplateInfo>::cast(
+      isolate->eternal_handles()->CreateSingleton(
+        isolate,
+        *v8::Utils::OpenHandle(*raw_template),
+        field));
+}
+
+
+icu::DecimalFormat* CreateICUNumberFormat(
+    Isolate* isolate,
+    const icu::Locale& icu_locale,
+    Handle<JSObject> options) {
+  // Make formatter from options. Numbering system is added
+  // to the locale as Unicode extension (if it was specified at all).
+  UErrorCode status = U_ZERO_ERROR;
+  icu::DecimalFormat* number_format = NULL;
+  icu::UnicodeString style;
+  icu::UnicodeString currency;
+  if (ExtractStringSetting(isolate, options, "style", &style)) {
+    if (style == UNICODE_STRING_SIMPLE("currency")) {
+      icu::UnicodeString display;
+      ExtractStringSetting(isolate, options, "currency", &currency);
+      ExtractStringSetting(isolate, options, "currencyDisplay", &display);
+
+#if (U_ICU_VERSION_MAJOR_NUM == 4) && (U_ICU_VERSION_MINOR_NUM <= 6)
+      icu::NumberFormat::EStyles format_style;
+      if (display == UNICODE_STRING_SIMPLE("code")) {
+        format_style = icu::NumberFormat::kIsoCurrencyStyle;
+      } else if (display == UNICODE_STRING_SIMPLE("name")) {
+        format_style = icu::NumberFormat::kPluralCurrencyStyle;
+      } else {
+        format_style = icu::NumberFormat::kCurrencyStyle;
+      }
+#else  // ICU version is 4.8 or above (we ignore versions below 4.0).
+      UNumberFormatStyle format_style;
+      if (display == UNICODE_STRING_SIMPLE("code")) {
+        format_style = UNUM_CURRENCY_ISO;
+      } else if (display == UNICODE_STRING_SIMPLE("name")) {
+        format_style = UNUM_CURRENCY_PLURAL;
+      } else {
+        format_style = UNUM_CURRENCY;
+      }
+#endif
+
+      number_format = static_cast<icu::DecimalFormat*>(
+          icu::NumberFormat::createInstance(icu_locale, format_style,  status));
+    } else if (style == UNICODE_STRING_SIMPLE("percent")) {
+      number_format = static_cast<icu::DecimalFormat*>(
+          icu::NumberFormat::createPercentInstance(icu_locale, status));
+      if (U_FAILURE(status)) {
+        delete number_format;
+        return NULL;
+      }
+      // Make sure 1.1% doesn't go into 2%.
+      number_format->setMinimumFractionDigits(1);
+    } else {
+      // Make a decimal instance by default.
+      number_format = static_cast<icu::DecimalFormat*>(
+          icu::NumberFormat::createInstance(icu_locale, status));
+    }
+  }
+
+  if (U_FAILURE(status)) {
+    delete number_format;
+    return NULL;
+  }
+
+  // Set all options.
+  if (!currency.isEmpty()) {
+    number_format->setCurrency(currency.getBuffer(), status);
+  }
+
+  int32_t digits;
+  if (ExtractIntegerSetting(
+          isolate, options, "minimumIntegerDigits", &digits)) {
+    number_format->setMinimumIntegerDigits(digits);
+  }
+
+  if (ExtractIntegerSetting(
+          isolate, options, "minimumFractionDigits", &digits)) {
+    number_format->setMinimumFractionDigits(digits);
+  }
+
+  if (ExtractIntegerSetting(
+          isolate, options, "maximumFractionDigits", &digits)) {
+    number_format->setMaximumFractionDigits(digits);
+  }
+
+  bool significant_digits_used = false;
+  if (ExtractIntegerSetting(
+          isolate, options, "minimumSignificantDigits", &digits)) {
+    number_format->setMinimumSignificantDigits(digits);
+    significant_digits_used = true;
+  }
+
+  if (ExtractIntegerSetting(
+          isolate, options, "maximumSignificantDigits", &digits)) {
+    number_format->setMaximumSignificantDigits(digits);
+    significant_digits_used = true;
+  }
+
+  number_format->setSignificantDigitsUsed(significant_digits_used);
+
+  bool grouping;
+  if (ExtractBooleanSetting(isolate, options, "useGrouping", &grouping)) {
+    number_format->setGroupingUsed(grouping);
+  }
+
+  // Set rounding mode.
+  number_format->setRoundingMode(icu::DecimalFormat::kRoundHalfUp);
+
+  return number_format;
+}
+
+
+void SetResolvedNumberSettings(Isolate* isolate,
+                               const icu::Locale& icu_locale,
+                               icu::DecimalFormat* number_format,
+                               Handle<JSObject> resolved) {
+  Factory* factory = isolate->factory();
+  icu::UnicodeString pattern;
+  number_format->toPattern(pattern);
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("pattern"),
+      factory->NewStringFromTwoByte(
+                   Vector<const uint16_t>(
+                       reinterpret_cast<const uint16_t*>(pattern.getBuffer()),
+                       pattern.length())).ToHandleChecked(),
+      SLOPPY).Assert();
+
+  // Set resolved currency code in options.currency if not empty.
+  icu::UnicodeString currency(number_format->getCurrency());
+  if (!currency.isEmpty()) {
+    JSObject::SetProperty(
+        resolved, factory->NewStringFromStaticChars("currency"),
+        factory->NewStringFromTwoByte(Vector<const uint16_t>(
+                                          reinterpret_cast<const uint16_t*>(
+                                              currency.getBuffer()),
+                                          currency.length())).ToHandleChecked(),
+        SLOPPY).Assert();
+  }
+
+  // Ugly hack. ICU doesn't expose numbering system in any way, so we have
+  // to assume that for given locale NumberingSystem constructor produces the
+  // same digits as NumberFormat/Calendar would.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::NumberingSystem* numbering_system =
+      icu::NumberingSystem::createInstance(icu_locale, status);
+  if (U_SUCCESS(status)) {
+    const char* ns = numbering_system->getName();
+    JSObject::SetProperty(
+        resolved, factory->NewStringFromStaticChars("numberingSystem"),
+        factory->NewStringFromAsciiChecked(ns), SLOPPY).Assert();
+  } else {
+    JSObject::SetProperty(resolved,
+                          factory->NewStringFromStaticChars("numberingSystem"),
+                          factory->undefined_value(), SLOPPY).Assert();
+  }
+  delete numbering_system;
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("useGrouping"),
+      factory->ToBoolean(number_format->isGroupingUsed()), SLOPPY).Assert();
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("minimumIntegerDigits"),
+      factory->NewNumberFromInt(number_format->getMinimumIntegerDigits()),
+      SLOPPY).Assert();
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("minimumFractionDigits"),
+      factory->NewNumberFromInt(number_format->getMinimumFractionDigits()),
+      SLOPPY).Assert();
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("maximumFractionDigits"),
+      factory->NewNumberFromInt(number_format->getMaximumFractionDigits()),
+      SLOPPY).Assert();
+
+  Handle<String> key =
+      factory->NewStringFromStaticChars("minimumSignificantDigits");
+  Maybe<bool> maybe = JSReceiver::HasOwnProperty(resolved, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    JSObject::SetProperty(
+        resolved, factory->NewStringFromStaticChars("minimumSignificantDigits"),
+        factory->NewNumberFromInt(number_format->getMinimumSignificantDigits()),
+        SLOPPY).Assert();
+  }
+
+  key = factory->NewStringFromStaticChars("maximumSignificantDigits");
+  maybe = JSReceiver::HasOwnProperty(resolved, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    JSObject::SetProperty(
+        resolved, factory->NewStringFromStaticChars("maximumSignificantDigits"),
+        factory->NewNumberFromInt(number_format->getMaximumSignificantDigits()),
+        SLOPPY).Assert();
+  }
+
+  // Set the locale
+  char result[ULOC_FULLNAME_CAPACITY];
+  status = U_ZERO_ERROR;
+  uloc_toLanguageTag(
+      icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status);
+  if (U_SUCCESS(status)) {
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromAsciiChecked(result),
+                          SLOPPY).Assert();
+  } else {
+    // This would never happen, since we got the locale from ICU.
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromStaticChars("und"),
+                          SLOPPY).Assert();
+  }
+}
+
+
+icu::Collator* CreateICUCollator(
+    Isolate* isolate,
+    const icu::Locale& icu_locale,
+    Handle<JSObject> options) {
+  // Make collator from options.
+  icu::Collator* collator = NULL;
+  UErrorCode status = U_ZERO_ERROR;
+  collator = icu::Collator::createInstance(icu_locale, status);
+
+  if (U_FAILURE(status)) {
+    delete collator;
+    return NULL;
+  }
+
+  // Set flags first, and then override them with sensitivity if necessary.
+  bool numeric;
+  if (ExtractBooleanSetting(isolate, options, "numeric", &numeric)) {
+    collator->setAttribute(
+        UCOL_NUMERIC_COLLATION, numeric ? UCOL_ON : UCOL_OFF, status);
+  }
+
+  // Normalization is always on, by the spec. We are free to optimize
+  // if the strings are already normalized (but we don't have a way to tell
+  // that right now).
+  collator->setAttribute(UCOL_NORMALIZATION_MODE, UCOL_ON, status);
+
+  icu::UnicodeString case_first;
+  if (ExtractStringSetting(isolate, options, "caseFirst", &case_first)) {
+    if (case_first == UNICODE_STRING_SIMPLE("upper")) {
+      collator->setAttribute(UCOL_CASE_FIRST, UCOL_UPPER_FIRST, status);
+    } else if (case_first == UNICODE_STRING_SIMPLE("lower")) {
+      collator->setAttribute(UCOL_CASE_FIRST, UCOL_LOWER_FIRST, status);
+    } else {
+      // Default (false/off).
+      collator->setAttribute(UCOL_CASE_FIRST, UCOL_OFF, status);
+    }
+  }
+
+  icu::UnicodeString sensitivity;
+  if (ExtractStringSetting(isolate, options, "sensitivity", &sensitivity)) {
+    if (sensitivity == UNICODE_STRING_SIMPLE("base")) {
+      collator->setStrength(icu::Collator::PRIMARY);
+    } else if (sensitivity == UNICODE_STRING_SIMPLE("accent")) {
+      collator->setStrength(icu::Collator::SECONDARY);
+    } else if (sensitivity == UNICODE_STRING_SIMPLE("case")) {
+      collator->setStrength(icu::Collator::PRIMARY);
+      collator->setAttribute(UCOL_CASE_LEVEL, UCOL_ON, status);
+    } else {
+      // variant (default)
+      collator->setStrength(icu::Collator::TERTIARY);
+    }
+  }
+
+  bool ignore;
+  if (ExtractBooleanSetting(isolate, options, "ignorePunctuation", &ignore)) {
+    if (ignore) {
+      collator->setAttribute(UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, status);
+    }
+  }
+
+  return collator;
+}
+
+
+void SetResolvedCollatorSettings(Isolate* isolate,
+                                 const icu::Locale& icu_locale,
+                                 icu::Collator* collator,
+                                 Handle<JSObject> resolved) {
+  Factory* factory = isolate->factory();
+  UErrorCode status = U_ZERO_ERROR;
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("numeric"),
+      factory->ToBoolean(
+          collator->getAttribute(UCOL_NUMERIC_COLLATION, status) == UCOL_ON),
+      SLOPPY).Assert();
+
+  switch (collator->getAttribute(UCOL_CASE_FIRST, status)) {
+    case UCOL_LOWER_FIRST:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("caseFirst"),
+          factory->NewStringFromStaticChars("lower"), SLOPPY).Assert();
+      break;
+    case UCOL_UPPER_FIRST:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("caseFirst"),
+          factory->NewStringFromStaticChars("upper"), SLOPPY).Assert();
+      break;
+    default:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("caseFirst"),
+          factory->NewStringFromStaticChars("false"), SLOPPY).Assert();
+  }
+
+  switch (collator->getAttribute(UCOL_STRENGTH, status)) {
+    case UCOL_PRIMARY: {
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("strength"),
+          factory->NewStringFromStaticChars("primary"), SLOPPY).Assert();
+
+      // case level: true + s1 -> case, s1 -> base.
+      if (UCOL_ON == collator->getAttribute(UCOL_CASE_LEVEL, status)) {
+        JSObject::SetProperty(
+            resolved, factory->NewStringFromStaticChars("sensitivity"),
+            factory->NewStringFromStaticChars("case"), SLOPPY).Assert();
+      } else {
+        JSObject::SetProperty(
+            resolved, factory->NewStringFromStaticChars("sensitivity"),
+            factory->NewStringFromStaticChars("base"), SLOPPY).Assert();
+      }
+      break;
+    }
+    case UCOL_SECONDARY:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("strength"),
+          factory->NewStringFromStaticChars("secondary"), SLOPPY).Assert();
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("sensitivity"),
+          factory->NewStringFromStaticChars("accent"), SLOPPY).Assert();
+      break;
+    case UCOL_TERTIARY:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("strength"),
+          factory->NewStringFromStaticChars("tertiary"), SLOPPY).Assert();
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("sensitivity"),
+          factory->NewStringFromStaticChars("variant"), SLOPPY).Assert();
+      break;
+    case UCOL_QUATERNARY:
+      // We shouldn't get quaternary and identical from ICU, but if we do
+      // put them into variant.
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("strength"),
+          factory->NewStringFromStaticChars("quaternary"), SLOPPY).Assert();
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("sensitivity"),
+          factory->NewStringFromStaticChars("variant"), SLOPPY).Assert();
+      break;
+    default:
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("strength"),
+          factory->NewStringFromStaticChars("identical"), SLOPPY).Assert();
+      JSObject::SetProperty(
+          resolved, factory->NewStringFromStaticChars("sensitivity"),
+          factory->NewStringFromStaticChars("variant"), SLOPPY).Assert();
+  }
+
+  JSObject::SetProperty(
+      resolved, factory->NewStringFromStaticChars("ignorePunctuation"),
+      factory->ToBoolean(collator->getAttribute(UCOL_ALTERNATE_HANDLING,
+                                                status) == UCOL_SHIFTED),
+      SLOPPY).Assert();
+
+  // Set the locale
+  char result[ULOC_FULLNAME_CAPACITY];
+  status = U_ZERO_ERROR;
+  uloc_toLanguageTag(
+      icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status);
+  if (U_SUCCESS(status)) {
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromAsciiChecked(result),
+                          SLOPPY).Assert();
+  } else {
+    // This would never happen, since we got the locale from ICU.
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromStaticChars("und"),
+                          SLOPPY).Assert();
+  }
+}
+
+
+icu::BreakIterator* CreateICUBreakIterator(
+    Isolate* isolate,
+    const icu::Locale& icu_locale,
+    Handle<JSObject> options) {
+  UErrorCode status = U_ZERO_ERROR;
+  icu::BreakIterator* break_iterator = NULL;
+  icu::UnicodeString type;
+  if (!ExtractStringSetting(isolate, options, "type", &type)) return NULL;
+
+  if (type == UNICODE_STRING_SIMPLE("character")) {
+    break_iterator =
+      icu::BreakIterator::createCharacterInstance(icu_locale, status);
+  } else if (type == UNICODE_STRING_SIMPLE("sentence")) {
+    break_iterator =
+      icu::BreakIterator::createSentenceInstance(icu_locale, status);
+  } else if (type == UNICODE_STRING_SIMPLE("line")) {
+    break_iterator =
+      icu::BreakIterator::createLineInstance(icu_locale, status);
+  } else {
+    // Defualt is word iterator.
+    break_iterator =
+      icu::BreakIterator::createWordInstance(icu_locale, status);
+  }
+
+  if (U_FAILURE(status)) {
+    delete break_iterator;
+    return NULL;
+  }
+
+  return break_iterator;
+}
+
+
+void SetResolvedBreakIteratorSettings(Isolate* isolate,
+                                      const icu::Locale& icu_locale,
+                                      icu::BreakIterator* break_iterator,
+                                      Handle<JSObject> resolved) {
+  Factory* factory = isolate->factory();
+  UErrorCode status = U_ZERO_ERROR;
+
+  // Set the locale
+  char result[ULOC_FULLNAME_CAPACITY];
+  status = U_ZERO_ERROR;
+  uloc_toLanguageTag(
+      icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status);
+  if (U_SUCCESS(status)) {
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromAsciiChecked(result),
+                          SLOPPY).Assert();
+  } else {
+    // This would never happen, since we got the locale from ICU.
+    JSObject::SetProperty(resolved, factory->NewStringFromStaticChars("locale"),
+                          factory->NewStringFromStaticChars("und"),
+                          SLOPPY).Assert();
+  }
+}
+
+}  // namespace
+
+
+// static
+Handle<ObjectTemplateInfo> I18N::GetTemplate(Isolate* isolate) {
+  return GetEternal<1, i::EternalHandles::I18N_TEMPLATE_ONE>(isolate);
+}
+
+
+// static
+Handle<ObjectTemplateInfo> I18N::GetTemplate2(Isolate* isolate) {
+  return GetEternal<2, i::EternalHandles::I18N_TEMPLATE_TWO>(isolate);
+}
+
+
+// static
+icu::SimpleDateFormat* DateFormat::InitializeDateTimeFormat(
+    Isolate* isolate,
+    Handle<String> locale,
+    Handle<JSObject> options,
+    Handle<JSObject> resolved) {
+  // Convert BCP47 into ICU locale format.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::Locale icu_locale;
+  char icu_result[ULOC_FULLNAME_CAPACITY];
+  int icu_length = 0;
+  v8::String::Utf8Value bcp47_locale(v8::Utils::ToLocal(locale));
+  if (bcp47_locale.length() != 0) {
+    uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY,
+                        &icu_length, &status);
+    if (U_FAILURE(status) || icu_length == 0) {
+      return NULL;
+    }
+    icu_locale = icu::Locale(icu_result);
+  }
+
+  icu::SimpleDateFormat* date_format = CreateICUDateFormat(
+      isolate, icu_locale, options);
+  if (!date_format) {
+    // Remove extensions and try again.
+    icu::Locale no_extension_locale(icu_locale.getBaseName());
+    date_format = CreateICUDateFormat(isolate, no_extension_locale, options);
+
+    // Set resolved settings (pattern, numbering system, calendar).
+    SetResolvedDateSettings(
+        isolate, no_extension_locale, date_format, resolved);
+  } else {
+    SetResolvedDateSettings(isolate, icu_locale, date_format, resolved);
+  }
+
+  return date_format;
+}
+
+
+icu::SimpleDateFormat* DateFormat::UnpackDateFormat(
+    Isolate* isolate,
+    Handle<JSObject> obj) {
+  Handle<String> key =
+      isolate->factory()->NewStringFromStaticChars("dateFormat");
+  Maybe<bool> maybe = JSReceiver::HasOwnProperty(obj, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    return reinterpret_cast<icu::SimpleDateFormat*>(
+        obj->GetInternalField(0));
+  }
+
+  return NULL;
+}
+
+
+template<class T>
+void DeleteNativeObjectAt(const v8::WeakCallbackData<v8::Value, void>& data,
+                          int index) {
+  v8::Local<v8::Object> obj = v8::Handle<v8::Object>::Cast(data.GetValue());
+  delete reinterpret_cast<T*>(obj->GetAlignedPointerFromInternalField(index));
+}
+
+
+static void DestroyGlobalHandle(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  GlobalHandles::Destroy(reinterpret_cast<Object**>(data.GetParameter()));
+}
+
+
+void DateFormat::DeleteDateFormat(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  DeleteNativeObjectAt<icu::SimpleDateFormat>(data, 0);
+  DestroyGlobalHandle(data);
+}
+
+
+icu::DecimalFormat* NumberFormat::InitializeNumberFormat(
+    Isolate* isolate,
+    Handle<String> locale,
+    Handle<JSObject> options,
+    Handle<JSObject> resolved) {
+  // Convert BCP47 into ICU locale format.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::Locale icu_locale;
+  char icu_result[ULOC_FULLNAME_CAPACITY];
+  int icu_length = 0;
+  v8::String::Utf8Value bcp47_locale(v8::Utils::ToLocal(locale));
+  if (bcp47_locale.length() != 0) {
+    uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY,
+                        &icu_length, &status);
+    if (U_FAILURE(status) || icu_length == 0) {
+      return NULL;
+    }
+    icu_locale = icu::Locale(icu_result);
+  }
+
+  icu::DecimalFormat* number_format =
+      CreateICUNumberFormat(isolate, icu_locale, options);
+  if (!number_format) {
+    // Remove extensions and try again.
+    icu::Locale no_extension_locale(icu_locale.getBaseName());
+    number_format = CreateICUNumberFormat(
+        isolate, no_extension_locale, options);
+
+    // Set resolved settings (pattern, numbering system).
+    SetResolvedNumberSettings(
+        isolate, no_extension_locale, number_format, resolved);
+  } else {
+    SetResolvedNumberSettings(isolate, icu_locale, number_format, resolved);
+  }
+
+  return number_format;
+}
+
+
+icu::DecimalFormat* NumberFormat::UnpackNumberFormat(
+    Isolate* isolate,
+    Handle<JSObject> obj) {
+  Handle<String> key =
+      isolate->factory()->NewStringFromStaticChars("numberFormat");
+  Maybe<bool> maybe = JSReceiver::HasOwnProperty(obj, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    return reinterpret_cast<icu::DecimalFormat*>(obj->GetInternalField(0));
+  }
+
+  return NULL;
+}
+
+
+void NumberFormat::DeleteNumberFormat(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  DeleteNativeObjectAt<icu::DecimalFormat>(data, 0);
+  DestroyGlobalHandle(data);
+}
+
+
+icu::Collator* Collator::InitializeCollator(
+    Isolate* isolate,
+    Handle<String> locale,
+    Handle<JSObject> options,
+    Handle<JSObject> resolved) {
+  // Convert BCP47 into ICU locale format.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::Locale icu_locale;
+  char icu_result[ULOC_FULLNAME_CAPACITY];
+  int icu_length = 0;
+  v8::String::Utf8Value bcp47_locale(v8::Utils::ToLocal(locale));
+  if (bcp47_locale.length() != 0) {
+    uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY,
+                        &icu_length, &status);
+    if (U_FAILURE(status) || icu_length == 0) {
+      return NULL;
+    }
+    icu_locale = icu::Locale(icu_result);
+  }
+
+  icu::Collator* collator = CreateICUCollator(isolate, icu_locale, options);
+  if (!collator) {
+    // Remove extensions and try again.
+    icu::Locale no_extension_locale(icu_locale.getBaseName());
+    collator = CreateICUCollator(isolate, no_extension_locale, options);
+
+    // Set resolved settings (pattern, numbering system).
+    SetResolvedCollatorSettings(
+        isolate, no_extension_locale, collator, resolved);
+  } else {
+    SetResolvedCollatorSettings(isolate, icu_locale, collator, resolved);
+  }
+
+  return collator;
+}
+
+
+icu::Collator* Collator::UnpackCollator(Isolate* isolate,
+                                        Handle<JSObject> obj) {
+  Handle<String> key = isolate->factory()->NewStringFromStaticChars("collator");
+  Maybe<bool> maybe = JSReceiver::HasOwnProperty(obj, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    return reinterpret_cast<icu::Collator*>(obj->GetInternalField(0));
+  }
+
+  return NULL;
+}
+
+
+void Collator::DeleteCollator(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  DeleteNativeObjectAt<icu::Collator>(data, 0);
+  DestroyGlobalHandle(data);
+}
+
+
+icu::BreakIterator* BreakIterator::InitializeBreakIterator(
+    Isolate* isolate,
+    Handle<String> locale,
+    Handle<JSObject> options,
+    Handle<JSObject> resolved) {
+  // Convert BCP47 into ICU locale format.
+  UErrorCode status = U_ZERO_ERROR;
+  icu::Locale icu_locale;
+  char icu_result[ULOC_FULLNAME_CAPACITY];
+  int icu_length = 0;
+  v8::String::Utf8Value bcp47_locale(v8::Utils::ToLocal(locale));
+  if (bcp47_locale.length() != 0) {
+    uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY,
+                        &icu_length, &status);
+    if (U_FAILURE(status) || icu_length == 0) {
+      return NULL;
+    }
+    icu_locale = icu::Locale(icu_result);
+  }
+
+  icu::BreakIterator* break_iterator = CreateICUBreakIterator(
+      isolate, icu_locale, options);
+  if (!break_iterator) {
+    // Remove extensions and try again.
+    icu::Locale no_extension_locale(icu_locale.getBaseName());
+    break_iterator = CreateICUBreakIterator(
+        isolate, no_extension_locale, options);
+
+    // Set resolved settings (locale).
+    SetResolvedBreakIteratorSettings(
+        isolate, no_extension_locale, break_iterator, resolved);
+  } else {
+    SetResolvedBreakIteratorSettings(
+        isolate, icu_locale, break_iterator, resolved);
+  }
+
+  return break_iterator;
+}
+
+
+icu::BreakIterator* BreakIterator::UnpackBreakIterator(Isolate* isolate,
+                                                       Handle<JSObject> obj) {
+  Handle<String> key =
+      isolate->factory()->NewStringFromStaticChars("breakIterator");
+  Maybe<bool> maybe = JSReceiver::HasOwnProperty(obj, key);
+  CHECK(maybe.has_value);
+  if (maybe.value) {
+    return reinterpret_cast<icu::BreakIterator*>(obj->GetInternalField(0));
+  }
+
+  return NULL;
+}
+
+
+void BreakIterator::DeleteBreakIterator(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  DeleteNativeObjectAt<icu::BreakIterator>(data, 0);
+  DeleteNativeObjectAt<icu::UnicodeString>(data, 1);
+  DestroyGlobalHandle(data);
+}
+
+} }  // namespace v8::internal