Move i18n extension's date-format C++ code to runtime

src/extensions/i18n/date-format.cc

Index: src/extensions/i18n/date-format.cc
diff --git a/src/extensions/i18n/date-format.cc b/src/extensions/i18n/date-format.cc
deleted file mode 100644
index 1058e37a58c374039b5ab8c35f44fe5c0b99d079..0000000000000000000000000000000000000000
--- a/src/extensions/i18n/date-format.cc
+++ /dev/null
@@ -1,329 +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 "date-format.h"
-
-#include <string.h>
-
-#include "i18n-utils.h"
-#include "unicode/calendar.h"
-#include "unicode/dtfmtsym.h"
-#include "unicode/dtptngen.h"
-#include "unicode/locid.h"
-#include "unicode/numsys.h"
-#include "unicode/smpdtfmt.h"
-#include "unicode/timezone.h"
-
-namespace v8_i18n {
-
-static icu::SimpleDateFormat* InitializeDateTimeFormat(v8::Handle<v8::String>,
-                                                       v8::Handle<v8::Object>,
-                                                       v8::Handle<v8::Object>);
-static icu::SimpleDateFormat* CreateICUDateFormat(const icu::Locale&,
-                                                  v8::Handle<v8::Object>);
-static void SetResolvedSettings(const icu::Locale&,
-                                icu::SimpleDateFormat*,
-                                v8::Handle<v8::Object>);
-
-icu::SimpleDateFormat* DateFormat::UnpackDateFormat(
-    v8::Handle<v8::Object> obj) {
-  v8::HandleScope handle_scope;
-
-  if (obj->HasOwnProperty(v8::String::New("dateFormat"))) {
-    return static_cast<icu::SimpleDateFormat*>(
-        obj->GetAlignedPointerFromInternalField(0));
-  }
-
-  return NULL;
-}
-
-void DateFormat::DeleteDateFormat(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 UnpackDateFormat(handle);
-
-  // Then dispose of the persistent handle to JS object.
-  object->Dispose(isolate);
-}
-
-void DateFormat::JSInternalFormat(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  double millis = 0.0;
-  if (args.Length() != 2 || !args[0]->IsObject() || !args[1]->IsDate()) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New(
-            "Internal error. Formatter and date value have to be specified.")));
-    return;
-  } else {
-    millis = v8::Date::Cast(*args[1])->NumberValue();
-  }
-
-  icu::SimpleDateFormat* date_format = UnpackDateFormat(args[0]->ToObject());
-  if (!date_format) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("DateTimeFormat method called on an object "
-                        "that is not a DateTimeFormat.")));
-    return;
-  }
-
-  icu::UnicodeString result;
-  date_format->format(millis, result);
-
-  args.GetReturnValue().Set(v8::String::New(
-      reinterpret_cast<const uint16_t*>(result.getBuffer()), result.length()));
-}
-
-void DateFormat::JSInternalParse(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  icu::UnicodeString string_date;
-  if (args.Length() != 2 || !args[0]->IsObject() || !args[1]->IsString()) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New(
-            "Internal error. Formatter and string have to be specified.")));
-    return;
-  } else {
-    if (!Utils::V8StringToUnicodeString(args[1], &string_date)) {
-      string_date = "";
-    }
-  }
-
-  icu::SimpleDateFormat* date_format = UnpackDateFormat(args[0]->ToObject());
-  if (!date_format) {
-    v8::ThrowException(v8::Exception::Error(
-        v8::String::New("DateTimeFormat method called on an object "
-                        "that is not a DateTimeFormat.")));
-    return;
-  }
-
-  UErrorCode status = U_ZERO_ERROR;
-  UDate date = date_format->parse(string_date, status);
-  if (U_FAILURE(status)) {
-    return;
-  }
-
-  args.GetReturnValue().Set(v8::Date::New(static_cast<double>(date)));
-}
-
-void DateFormat::JSCreateDateTimeFormat(
-    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> date_format_template =
-      Utils::GetTemplate(isolate);
-
-  // Create an empty object wrapper.
-  v8::Local<v8::Object> local_object = date_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 date time formatter as internal field of the resulting JS object.
-  icu::SimpleDateFormat* date_format = InitializeDateTimeFormat(
-      args[0]->ToString(), args[1]->ToObject(), args[2]->ToObject());
-
-  if (!date_format) {
-    v8::ThrowException(v8::Exception::Error(v8::String::New(
-        "Internal error. Couldn't create ICU date time formatter.")));
-    return;
-  } else {
-    local_object->SetAlignedPointerInInternalField(0, date_format);
-
-    v8::TryCatch try_catch;
-    local_object->Set(v8::String::New("dateFormat"), 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, &DeleteDateFormat);
-  args.GetReturnValue().Set(wrapper);
-  wrapper.ClearAndLeak();
-}
-
-static icu::SimpleDateFormat* InitializeDateTimeFormat(
-    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::SimpleDateFormat* date_format = CreateICUDateFormat(icu_locale, options);
-  if (!date_format) {
-    // Remove extensions and try again.
-    icu::Locale no_extension_locale(icu_locale.getBaseName());
-    date_format = CreateICUDateFormat(no_extension_locale, options);
-
-    // Set resolved settings (pattern, numbering system, calendar).
-    SetResolvedSettings(no_extension_locale, date_format, resolved);
-  } else {
-    SetResolvedSettings(icu_locale, date_format, resolved);
-  }
-
-  return date_format;
-}
-
-static icu::SimpleDateFormat* CreateICUDateFormat(
-    const icu::Locale& icu_locale, v8::Handle<v8::Object> 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 (Utils::ExtractStringSetting(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 (Utils::ExtractStringSetting(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;
-}
-
-static void SetResolvedSettings(const icu::Locale& icu_locale,
-                                icu::SimpleDateFormat* date_format,
-                                v8::Handle<v8::Object> resolved) {
-  UErrorCode status = U_ZERO_ERROR;
-  icu::UnicodeString pattern;
-  date_format->toPattern(pattern);
-  resolved->Set(v8::String::New("pattern"),
-                v8::String::New(reinterpret_cast<const uint16_t*>(
-                    pattern.getBuffer()), pattern.length()));
-
-  // Set time zone and calendar.
-  if (date_format) {
-    const icu::Calendar* calendar = date_format->getCalendar();
-    const char* calendar_name = calendar->getType();
-    resolved->Set(v8::String::New("calendar"), v8::String::New(calendar_name));
-
-    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")) {
-        resolved->Set(v8::String::New("timeZone"), v8::String::New("UTC"));
-      } else {
-        resolved->Set(v8::String::New("timeZone"),
-                      v8::String::New(reinterpret_cast<const uint16_t*>(
-                          canonical_time_zone.getBuffer()),
-                                      canonical_time_zone.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/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();
-    resolved->Set(v8::String::New("numberingSystem"), v8::String::New(ns));
-  } else {
-    resolved->Set(v8::String::New("numberingSystem"), v8::Undefined());
-  }
-  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)) {
-    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