Move i18n's number-format C++ code to runtime

src/extensions/i18n/number-format.cc

Index: src/extensions/i18n/number-format.cc
diff --git a/src/extensions/i18n/number-format.cc b/src/extensions/i18n/number-format.cc
deleted file mode 100644
index 136471561c44a727c41a96c6a6d371ddeaf0b127..0000000000000000000000000000000000000000
--- a/src/extensions/i18n/number-format.cc
+++ /dev/null
@@ -1,418 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * 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.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
-// OWNER OR 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.
-// limitations under the License.
-
-#include "number-format.h"
-
-#include <string.h>
-
-#include "i18n-utils.h"
-#include "unicode/curramt.h"
-#include "unicode/dcfmtsym.h"
-#include "unicode/decimfmt.h"
-#include "unicode/locid.h"
-#include "unicode/numfmt.h"
-#include "unicode/numsys.h"
-#include "unicode/uchar.h"
-#include "unicode/ucurr.h"
-#include "unicode/unum.h"
-#include "unicode/uversion.h"
-
-namespace v8_i18n {
-
-static icu::DecimalFormat* InitializeNumberFormat(v8::Handle<v8::String>,
-                                                  v8::Handle<v8::Object>,
-                                                  v8::Handle<v8::Object>);
-static icu::DecimalFormat* CreateICUNumberFormat(const icu::Locale&,
-                                                 v8::Handle<v8::Object>);
-static void SetResolvedSettings(const icu::Locale&,
-                                icu::DecimalFormat*,
-                                v8::Handle<v8::Object>);
-
-icu::DecimalFormat* NumberFormat::UnpackNumberFormat(
-    v8::Handle<v8::Object> obj) {
-  v8::HandleScope handle_scope;
-
-  // v8::ObjectTemplate doesn't have HasInstance method so we can't check
-  // if obj is an instance of NumberFormat class. We'll check for a property
-  // that has to be in the object. The same applies to other services, like
-  // Collator and DateTimeFormat.
-  if (obj->HasOwnProperty(v8::String::New("numberFormat"))) {
-    return static_cast<icu::DecimalFormat*>(
-        obj->GetAlignedPointerFromInternalField(0));
-  }
-
-  return NULL;
-}
-
-void NumberFormat::DeleteNumberFormat(v8::Isolate* isolate,
-                                      v8::Persistent<v8::Object>* object,
-                                      void* param) {
-  // First delete the hidden C++ object.
-  // Unpacking should never return NULL here. That would only happen if
-  // this method is used as the weak callback for persistent handles not
-  // pointing to a date time formatter.
-  v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::Object> handle = v8::Local<v8::Object>::New(isolate, *object);
-  delete UnpackNumberFormat(handle);
-
-  // Then dispose of the persistent handle to JS object.
-  object->Dispose(isolate);
-}
-
-void NumberFormat::JSInternalFormat(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  if (args.Length() != 2 || !args[0]->IsObject() || !args[1]->IsNumber()) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("Formatter and numeric value have to be specified.")));
-    return;
-  }
-
-  icu::DecimalFormat* number_format = UnpackNumberFormat(args[0]->ToObject());
-  if (!number_format) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("NumberFormat method called on an object "
-                        "that is not a NumberFormat.")));
-    return;
-  }
-
-  // ICU will handle actual NaN value properly and return NaN string.
-  icu::UnicodeString result;
-  number_format->format(args[1]->NumberValue(), result);
-
-  args.GetReturnValue().Set(v8::String::New(
-      reinterpret_cast<const uint16_t*>(result.getBuffer()), result.length()));
-}
-
-void NumberFormat::JSInternalParse(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  if (args.Length() != 2 || !args[0]->IsObject() || !args[1]->IsString()) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("Formatter and string have to be specified.")));
-    return;
-  }
-
-  icu::DecimalFormat* number_format = UnpackNumberFormat(args[0]->ToObject());
-  if (!number_format) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("NumberFormat method called on an object "
-                        "that is not a NumberFormat.")));
-    return;
-  }
-
-  // ICU will handle actual NaN value properly and return NaN string.
-  icu::UnicodeString string_number;
-  if (!Utils::V8StringToUnicodeString(args[1]->ToString(), &string_number)) {
-    string_number = "";
-  }
-
-  UErrorCode status = U_ZERO_ERROR;
-  icu::Formattable result;
-  // ICU 4.6 doesn't support parseCurrency call. We need to wait for ICU49
-  // to be part of Chrome.
-  // TODO(cira): Include currency parsing code using parseCurrency call.
-  // We need to check if the formatter parses all currencies or only the
-  // one it was constructed with (it will impact the API - how to return ISO
-  // code and the value).
-  number_format->parse(string_number, result, status);
-  if (U_FAILURE(status)) {
-    return;
-  }
-
-  switch (result.getType()) {
-  case icu::Formattable::kDouble:
-    args.GetReturnValue().Set(result.getDouble());
-    return;
-  case icu::Formattable::kLong:
-    args.GetReturnValue().Set(result.getLong());
-    return;
-  case icu::Formattable::kInt64:
-    args.GetReturnValue().Set(static_cast<double>(result.getInt64()));
-    return;
-  default:
-    return;
-  }
-}
-
-void NumberFormat::JSCreateNumberFormat(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  if (args.Length() != 3 ||
-      !args[0]->IsString() ||
-      !args[1]->IsObject() ||
-      !args[2]->IsObject()) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("Internal error, wrong parameters.")));
-    return;
-  }
-
-  v8::Isolate* isolate = args.GetIsolate();
-  v8::Local<v8::ObjectTemplate> number_format_template =
-      Utils::GetTemplate(isolate);
-
-  // Create an empty object wrapper.
-  v8::Local<v8::Object> local_object = number_format_template->NewInstance();
-  // But the handle shouldn't be empty.
-  // That can happen if there was a stack overflow when creating the object.
-  if (local_object.IsEmpty()) {
-    args.GetReturnValue().Set(local_object);
-    return;
-  }
-
-  // Set number formatter as internal field of the resulting JS object.
-  icu::DecimalFormat* number_format = InitializeNumberFormat(
-      args[0]->ToString(), args[1]->ToObject(), args[2]->ToObject());
-
-  if (!number_format) {
-    v8::ThrowException(v8::Exception::Error(v8::String::New(
-        "Internal error. Couldn't create ICU number formatter.")));
-    return;
-  } else {
-    local_object->SetAlignedPointerInInternalField(0, number_format);
-
-    v8::TryCatch try_catch;
-    local_object->Set(v8::String::New("numberFormat"),
-                      v8::String::New("valid"));
-    if (try_catch.HasCaught()) {
-      v8::ThrowException(v8::Exception::Error(
-          v8::String::New("Internal error, couldn't set property.")));
-      return;
-    }
-  }
-
-  v8::Persistent<v8::Object> wrapper(isolate, local_object);
-  // Make object handle weak so we can delete iterator once GC kicks in.
-  wrapper.MakeWeak<void>(NULL, &DeleteNumberFormat);
-  args.GetReturnValue().Set(wrapper);
-  wrapper.ClearAndLeak();
-}
-
-static icu::DecimalFormat* InitializeNumberFormat(
-    v8::Handle<v8::String> locale,
-    v8::Handle<v8::Object> options,
-    v8::Handle<v8::Object> 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::AsciiValue bcp47_locale(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(icu_locale, options);
-  if (!number_format) {
-    // Remove extensions and try again.
-    icu::Locale no_extension_locale(icu_locale.getBaseName());
-    number_format = CreateICUNumberFormat(no_extension_locale, options);
-
-    // Set resolved settings (pattern, numbering system).
-    SetResolvedSettings(no_extension_locale, number_format, resolved);
-  } else {
-    SetResolvedSettings(icu_locale, number_format, resolved);
-  }
-
-  return number_format;
-}
-
-static icu::DecimalFormat* CreateICUNumberFormat(
-    const icu::Locale& icu_locale, v8::Handle<v8::Object> 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 (Utils::ExtractStringSetting(options, "style", &style)) {
-    if (style == UNICODE_STRING_SIMPLE("currency")) {
-      Utils::ExtractStringSetting(options, "currency", &currency);
-
-      icu::UnicodeString display;
-      Utils::ExtractStringSetting(options, "currencyDisplay", &display);
-#if (U_ICU_VERSION_MAJOR_NUM == 4) && (U_ICU_VERSION_MINOR_NUM <= 6)
-      icu::NumberFormat::EStyles style;
-      if (display == UNICODE_STRING_SIMPLE("code")) {
-        style = icu::NumberFormat::kIsoCurrencyStyle;
-      } else if (display == UNICODE_STRING_SIMPLE("name")) {
-        style = icu::NumberFormat::kPluralCurrencyStyle;
-      } else {
-        style = icu::NumberFormat::kCurrencyStyle;
-      }
-#else  // ICU version is 4.8 or above (we ignore versions below 4.0).
-      UNumberFormatStyle style;
-      if (display == UNICODE_STRING_SIMPLE("code")) {
-        style = UNUM_CURRENCY_ISO;
-      } else if (display == UNICODE_STRING_SIMPLE("name")) {
-        style = UNUM_CURRENCY_PLURAL;
-      } else {
-        style = UNUM_CURRENCY;
-      }
-#endif
-
-      number_format = static_cast<icu::DecimalFormat*>(
-          icu::NumberFormat::createInstance(icu_locale, 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 (Utils::ExtractIntegerSetting(
-          options, "minimumIntegerDigits", &digits)) {
-    number_format->setMinimumIntegerDigits(digits);
-  }
-
-  if (Utils::ExtractIntegerSetting(
-          options, "minimumFractionDigits", &digits)) {
-    number_format->setMinimumFractionDigits(digits);
-  }
-
-  if (Utils::ExtractIntegerSetting(
-          options, "maximumFractionDigits", &digits)) {
-    number_format->setMaximumFractionDigits(digits);
-  }
-
-  bool significant_digits_used = false;
-  if (Utils::ExtractIntegerSetting(
-          options, "minimumSignificantDigits", &digits)) {
-    number_format->setMinimumSignificantDigits(digits);
-    significant_digits_used = true;
-  }
-
-  if (Utils::ExtractIntegerSetting(
-          options, "maximumSignificantDigits", &digits)) {
-    number_format->setMaximumSignificantDigits(digits);
-    significant_digits_used = true;
-  }
-
-  number_format->setSignificantDigitsUsed(significant_digits_used);
-
-  bool grouping;
-  if (Utils::ExtractBooleanSetting(options, "useGrouping", &grouping)) {
-    number_format->setGroupingUsed(grouping);
-  }
-
-  // Set rounding mode.
-  number_format->setRoundingMode(icu::DecimalFormat::kRoundHalfUp);
-
-  return number_format;
-}
-
-static void SetResolvedSettings(const icu::Locale& icu_locale,
-                                icu::DecimalFormat* number_format,
-                                v8::Handle<v8::Object> resolved) {
-  icu::UnicodeString pattern;
-  number_format->toPattern(pattern);
-  resolved->Set(v8::String::New("pattern"),
-                v8::String::New(reinterpret_cast<const uint16_t*>(
-                    pattern.getBuffer()), pattern.length()));
-
-  // Set resolved currency code in options.currency if not empty.
-  icu::UnicodeString currency(number_format->getCurrency());
-  if (!currency.isEmpty()) {
-    resolved->Set(v8::String::New("currency"),
-                  v8::String::New(reinterpret_cast<const uint16_t*>(
-                      currency.getBuffer()), currency.length()));
-  }
-
-  // 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 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();
-    resolved->Set(v8::String::New("numberingSystem"), v8::String::New(ns));
-  } else {
-    resolved->Set(v8::String::New("numberingSystem"), v8::Undefined());
-  }
-  delete numbering_system;
-
-  resolved->Set(v8::String::New("useGrouping"),
-                v8::Boolean::New(number_format->isGroupingUsed()));
-
-  resolved->Set(v8::String::New("minimumIntegerDigits"),
-                v8::Integer::New(number_format->getMinimumIntegerDigits()));
-
-  resolved->Set(v8::String::New("minimumFractionDigits"),
-                v8::Integer::New(number_format->getMinimumFractionDigits()));
-
-  resolved->Set(v8::String::New("maximumFractionDigits"),
-                v8::Integer::New(number_format->getMaximumFractionDigits()));
-
-  if (resolved->HasOwnProperty(v8::String::New("minimumSignificantDigits"))) {
-    resolved->Set(v8::String::New("minimumSignificantDigits"), v8::Integer::New(
-        number_format->getMinimumSignificantDigits()));
-  }
-
-  if (resolved->HasOwnProperty(v8::String::New("maximumSignificantDigits"))) {
-    resolved->Set(v8::String::New("maximumSignificantDigits"), v8::Integer::New(
-        number_format->getMaximumSignificantDigits()));
-  }
-
-  // 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)) {
-    resolved->Set(v8::String::New("locale"), v8::String::New(result));
-  } else {
-    // This would never happen, since we got the locale from ICU.
-    resolved->Set(v8::String::New("locale"), v8::String::New("und"));
-  }
-}
-
-}  // namespace v8_i18n