Add Dart_NewIntegerFromUint64.

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
@@ skipping 2013 matching lines @@
     NOHANDLESCOPE(isolate);
     return Api::NewHandle(isolate, Smi::New(static_cast<intptr_t>(value)));
   }
   // Slow path for Mints and Bigints.
   DARTSCOPE(isolate);
   CHECK_CALLBACK_STATE(isolate);
   return Api::NewHandle(isolate, Integer::New(value));
 }
 
 
+DART_EXPORT Dart_Handle Dart_NewIntegerFromUint64(uint64_t value) {
+  Isolate* isolate = Isolate::Current();
+  DARTSCOPE(isolate);
+  CHECK_CALLBACK_STATE(isolate);
+  return Api::NewHandle(isolate, Integer::NewFromUint64(value));
+}
+
+
 DART_EXPORT Dart_Handle Dart_NewIntegerFromHexCString(const char* str) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   CHECK_CALLBACK_STATE(isolate);
   const String& str_obj = String::Handle(isolate, String::New(str));
   return Api::NewHandle(isolate, Integer::New(str_obj));
 }
 
 
 DART_EXPORT Dart_Handle Dart_IntegerToInt64(Dart_Handle integer,
@@ skipping 38 matching lines @@
       *value = smi_value;
       return Api::Success();
     }
   }
   // Slow path for Mints and Bigints.
   DARTSCOPE(isolate);
   const Integer& int_obj = Api::UnwrapIntegerHandle(isolate, integer);
   if (int_obj.IsNull()) {
     RETURN_TYPE_ERROR(isolate, integer, Integer);
   }
-  ASSERT(!int_obj.IsSmi());
-  if (int_obj.IsMint() && !int_obj.IsNegative()) {
+  if (int_obj.IsSmi()) {
+    ASSERT(int_obj.IsNegative());
+  } else if (int_obj.IsMint() && !int_obj.IsNegative()) {
     *value = int_obj.AsInt64Value();
     return Api::Success();
   } else {
     const Bigint& bigint = Bigint::Cast(int_obj);
     if (bigint.FitsIntoUint64()) {
       *value = bigint.AsUint64Value();
       return Api::Success();
     }
   }
   return Api::NewError("%s: Integer %s cannot be represented as a uint64_t.",
@@ skipping 3441 matching lines @@
 
 
 DART_EXPORT void Dart_RegisterRootServiceRequestCallback(
     const char* name,
     Dart_ServiceRequestCallback callback,
     void* user_data) {
   Service::RegisterRootEmbedderCallback(name, callback, user_data);
 }
 
 }  // namespace dart