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

src/i18n.cc

Index: src/i18n.cc
diff --git a/src/i18n.cc b/src/i18n.cc
index b2ccfd4985eaecf1344030125e0d6e9cc93e8e49..bd9d9c31a0b34d4613544564ee8266ec3f03aa5c 100644
--- a/src/i18n.cc
+++ b/src/i18n.cc
@@ -29,33 +29,83 @@
 #include "i18n.h"
 
 #include "unicode/calendar.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/smpdtfmt.h"
 #include "unicode/timezone.h"
+#include "unicode/uchar.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) {
+  MaybeObject* maybe_object = options->GetProperty(
+      *isolate->factory()->NewStringFromAscii(CStrVector(key)));
+  Object* object;
+  if (maybe_object->ToObject(&object) && object->IsString()) {
+    v8::String::Utf8Value utf8_string(
+        v8::Utils::ToLocal(Handle<String>(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) {
+  MaybeObject* maybe_object = options->GetProperty(
+      *isolate->factory()->NewStringFromAscii(CStrVector(key)));
+  Object* object;
+  if (maybe_object->ToObject(&object) && object->IsNumber()) {
+    object->ToInt32(value);
+    return true;
+  }
+  return false;
+}
+
+
+bool ExtractBooleanSetting(Isolate* isolate,
+                           Handle<JSObject> options,
+                           const char* key,
+                           bool* value) {
+  MaybeObject* maybe_object = options->GetProperty(
+      *isolate->factory()->NewStringFromAscii(CStrVector(key)));
+  Object* object;
+  if (maybe_object->ToObject(&object) && object->IsBoolean()) {
+    *value = object->BooleanValue();
+    return true;
+  }
+  return false;
+}
+
+
 icu::SimpleDateFormat* CreateICUDateFormat(
     Isolate* isolate,
     const icu::Locale& icu_locale,
-    Handle<Object> options) {
+    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;
-  MaybeObject* maybe_object = options->GetProperty(
-      *isolate->factory()->NewStringFromAscii(CStrVector("timeZone")));
-  Object* timezone;
-  if (maybe_object->ToObject(&timezone) && timezone->IsString()) {
-    v8::String::Utf8Value utf8_timezone(
-        v8::Utils::ToLocal(Handle<String>(String::cast(timezone))));
-    icu::UnicodeString u_timezone(icu::UnicodeString::fromUTF8(*utf8_timezone));
-    tz = icu::TimeZone::createTimeZone(u_timezone);
+  icu::UnicodeString timezone;
+  if (ExtractStringSetting(isolate, options, "timeZone", &timezone)) {
+    tz = icu::TimeZone::createTimeZone(timezone);
   } else {
     tz = icu::TimeZone::createDefault();
   }
@@ -68,18 +118,13 @@ icu::SimpleDateFormat* CreateICUDateFormat(
   // 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;
-  Object* skeleton;
-  maybe_object = options->GetProperty(
-      *isolate->factory()->NewStringFromAscii(CStrVector("skeleton")));
-  if (maybe_object->ToObject(&skeleton) && skeleton->IsString()) {
-    v8::String::Utf8Value utf8_skeleton(
-        v8::Utils::ToLocal(Handle<String>(String::cast(skeleton))));
-    icu::UnicodeString u_skeleton(icu::UnicodeString::fromUTF8(*utf8_skeleton));
+  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(u_skeleton, status);
+      pattern = generator->getBestPattern(skeleton, status);
       delete generator;
     }
 
@@ -99,10 +144,10 @@ icu::SimpleDateFormat* CreateICUDateFormat(
 }
 
 
-void SetResolvedSettings(Isolate* isolate,
-                         const icu::Locale& icu_locale,
-                         icu::SimpleDateFormat* date_format,
-                         Handle<JSObject> resolved) {
+void SetResolvedDateSettings(Isolate* isolate,
+                             const icu::Locale& icu_locale,
+                             icu::SimpleDateFormat* date_format,
+                             Handle<JSObject> resolved) {
   UErrorCode status = U_ZERO_ERROR;
   icu::UnicodeString pattern;
   date_format->toPattern(pattern);
@@ -217,6 +262,249 @@ Handle<ObjectTemplateInfo> GetEternal(Isolate* isolate) {
         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) {
+  icu::UnicodeString pattern;
+  number_format->toPattern(pattern);
+  JSObject::SetProperty(
+      resolved,
+      isolate->factory()->NewStringFromAscii(CStrVector("pattern")),
+      isolate->factory()->NewStringFromTwoByte(
+        Vector<const uint16_t>(
+            reinterpret_cast<const uint16_t*>(pattern.getBuffer()),
+            pattern.length())),
+      NONE,
+      kNonStrictMode);
+
+  // Set resolved currency code in options.currency if not empty.
+  icu::UnicodeString currency(number_format->getCurrency());
+  if (!currency.isEmpty()) {
+    JSObject::SetProperty(
+        resolved,
+        isolate->factory()->NewStringFromAscii(CStrVector("currency")),
+        isolate->factory()->NewStringFromTwoByte(
+          Vector<const uint16_t>(
+              reinterpret_cast<const uint16_t*>(currency.getBuffer()),
+              currency.length())),
+        NONE,
+        kNonStrictMode);
+  }
+
+  // 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,
+        isolate->factory()->NewStringFromAscii(CStrVector("numberingSystem")),
+        isolate->factory()->NewStringFromAscii(CStrVector(ns)),
+        NONE,
+        kNonStrictMode);
+  } else {
+    JSObject::SetProperty(
+        resolved,
+        isolate->factory()->NewStringFromAscii(CStrVector("numberingSystem")),
+        isolate->factory()->undefined_value(),
+        NONE,
+        kNonStrictMode);
+  }
+  delete numbering_system;
+
+  JSObject::SetProperty(
+      resolved,
+      isolate->factory()->NewStringFromAscii(CStrVector("useGrouping")),
+      isolate->factory()->ToBoolean(number_format->isGroupingUsed()),
+      NONE,
+      kNonStrictMode);
+
+  JSObject::SetProperty(
+      resolved,
+      isolate->factory()->NewStringFromAscii(
+          CStrVector("minimumIntegerDigits")),
+      isolate->factory()->NewNumberFromInt(
+          number_format->getMinimumIntegerDigits()),
+      NONE,
+      kNonStrictMode);
+
+  JSObject::SetProperty(
+      resolved,
+      isolate->factory()->NewStringFromAscii(
+          CStrVector("minimumFractionDigits")),
+      isolate->factory()->NewNumberFromInt(
+          number_format->getMinimumFractionDigits()),
+      NONE,
+      kNonStrictMode);
+
+  JSObject::SetProperty(
+      resolved,
+      isolate->factory()->NewStringFromAscii(
+          CStrVector("maximumFractionDigits")),
+      isolate->factory()->NewNumberFromInt(
+          number_format->getMaximumFractionDigits()),
+      NONE,
+      kNonStrictMode);
+
+  if (resolved->HasLocalProperty(*isolate->factory()->NewStringFromAscii(
+          CStrVector("minimumSignificantDigits")))) {
+    JSObject::SetProperty(
+        resolved,
+        isolate->factory()->NewStringFromAscii(
+            CStrVector("minimumSignificantDigits")),
+        isolate->factory()->NewNumberFromInt(
+            number_format->getMinimumSignificantDigits()),
+        NONE,
+        kNonStrictMode);
+  }
+
+  if (resolved->HasLocalProperty(*isolate->factory()->NewStringFromAscii(
+          CStrVector("maximumSignificantDigits")))) {
+    JSObject::SetProperty(
+        resolved,
+        isolate->factory()->NewStringFromAscii(
+            CStrVector("maximumSignificantDigits")),
+        isolate->factory()->NewNumberFromInt(
+            number_format->getMaximumSignificantDigits()),
+        NONE,
+        kNonStrictMode);
+  }
+
+  // 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,
+        isolate->factory()->NewStringFromAscii(CStrVector("locale")),
+        isolate->factory()->NewStringFromAscii(CStrVector(result)),
+        NONE,
+        kNonStrictMode);
+  } else {
+    // This would never happen, since we got the locale from ICU.
+    JSObject::SetProperty(
+        resolved,
+        isolate->factory()->NewStringFromAscii(CStrVector("locale")),
+        isolate->factory()->NewStringFromAscii(CStrVector("und")),
+        NONE,
+        kNonStrictMode);
+  }
+}
+
 }  // namespace
 
 
@@ -261,9 +549,10 @@ icu::SimpleDateFormat* DateFormat::InitializeDateTimeFormat(
     date_format = CreateICUDateFormat(isolate, no_extension_locale, options);
 
     // Set resolved settings (pattern, numbering system, calendar).
-    SetResolvedSettings(isolate, no_extension_locale, date_format, resolved);
+    SetResolvedDateSettings(
+        isolate, no_extension_locale, date_format, resolved);
   } else {
-    SetResolvedSettings(isolate, icu_locale, date_format, resolved);
+    SetResolvedDateSettings(isolate, icu_locale, date_format, resolved);
   }
 
   return date_format;
@@ -294,4 +583,67 @@ void DateFormat::DeleteDateFormat(v8::Isolate* isolate,
   object->Dispose(isolate);
 }
 
+
+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) {
+  if (obj->HasLocalProperty(*isolate->factory()->NewStringFromAscii(
+          CStrVector("numberFormat")))) {
+    return reinterpret_cast<icu::DecimalFormat*>(obj->GetInternalField(0));
+  }
+
+  return NULL;
+}
+
+
+void NumberFormat::DeleteNumberFormat(v8::Isolate* isolate,
+                                      Persistent<v8::Object>* object,
+                                      void* param) {
+  // First delete the hidden C++ object.
+  delete reinterpret_cast<icu::DecimalFormat*>(Handle<JSObject>::cast(
+      v8::Utils::OpenPersistent(object))->GetInternalField(0));
+
+  // Then dispose of the persistent handle to JS object.
+  object->Dispose(isolate);
+}
+
 } }  // namespace v8::internal