[Intl] Refactor CreateNumberFormat into Intl:: for later C++ usage.

Bug: v8:7960
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I2ea86824e98d9c92a838b8c515e9ab238abe51d1
Reviewed-on: https://chromium-review.googlesource.com/1149616
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54709}

src/objects/intl-objects.cc

@@ -1734,5 +1734,32 @@ Handle<Smi> Intl::CurrencyDigits(Isolate* isolate, Handle<String> currency) {
   return Handle<Smi>(Smi::FromInt(fraction_digits), isolate);
 }
 
+MaybeHandle<JSObject> Intl::CreateNumberFormat(Isolate* isolate,
+                                               Handle<String> locale,
+                                               Handle<JSObject> options,
+                                               Handle<JSObject> resolved) {
+  Handle<JSFunction> constructor(
+      isolate->native_context()->intl_number_format_function(), isolate);
+
+  Handle<JSObject> local_object;
+  ASSIGN_RETURN_ON_EXCEPTION(isolate, local_object,
+                             JSObject::New(constructor, constructor), JSObject);
+
+  // Set number formatter as embedder field of the resulting JS object.
+  icu::DecimalFormat* number_format =
+      NumberFormat::InitializeNumberFormat(isolate, locale, options, resolved);
+
+  CHECK_NOT_NULL(number_format);
+
+  local_object->SetEmbedderField(NumberFormat::kDecimalFormatIndex,
+                                 reinterpret_cast<Smi*>(number_format));
+
+  Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
+  GlobalHandles::MakeWeak(wrapper.location(), wrapper.location(),
+                          NumberFormat::DeleteNumberFormat,
+                          WeakCallbackType::kInternalFields);
+  return local_object;
+}
+
 }  // namespace internal
 }  // namespace v8

src/objects/intl-objects.h

@@ -306,6 +306,10 @@ class Intl {
   // ecma-402/#sec-currencydigits
   // The currency is expected to an all upper case string value.
   static Handle<Smi> CurrencyDigits(Isolate* isolate, Handle<String> currency);
+
+  V8_WARN_UNUSED_RESULT static MaybeHandle<JSObject> CreateNumberFormat(
+      Isolate* isolate, Handle<String> locale, Handle<JSObject> options,
+      Handle<JSObject> resolved);
 };
 
 }  // namespace internal

src/runtime/runtime-intl.cc

@@ -217,27 +217,8 @@ RUNTIME_FUNCTION(Runtime_CreateNumberFormat) {
   CONVERT_ARG_HANDLE_CHECKED(String, locale, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, options, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, resolved, 2);
-
-  Handle<JSFunction> constructor(
-      isolate->native_context()->intl_number_format_function(), isolate);
-
-  Handle<JSObject> local_object;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, local_object,
-                                     JSObject::New(constructor, constructor));
-
-  // Set number formatter as embedder field of the resulting JS object.
-  icu::DecimalFormat* number_format =
-      NumberFormat::InitializeNumberFormat(isolate, locale, options, resolved);
-  CHECK_NOT_NULL(number_format);
-
-  local_object->SetEmbedderField(NumberFormat::kDecimalFormatIndex,
-                                 reinterpret_cast<Smi*>(number_format));
-
-  Handle<Object> wrapper = isolate->global_handles()->Create(*local_object);
-  GlobalHandles::MakeWeak(wrapper.location(), wrapper.location(),
-                          NumberFormat::DeleteNumberFormat,
-                          WeakCallbackType::kInternalFields);
-  return *local_object;
+  RETURN_RESULT_OR_FAILURE(
+      isolate, Intl::CreateNumberFormat(isolate, locale, options, resolved));
 }
 
 RUNTIME_FUNCTION(Runtime_InternalNumberFormat) {