ElementsAccessor::SetLength() handlified.

src/objects-inl.h

 // Copyright 2012 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
@@ skipping 1013 matching lines @@
     ? static_cast<double>(reinterpret_cast<Smi*>(this)->value())
     : reinterpret_cast<HeapNumber*>(this)->value();
 }
 
 
 bool Object::IsNaN() {
   return this->IsHeapNumber() && std::isnan(HeapNumber::cast(this)->value());
 }
 
 
+// static
+Handle<Object> Object::ToSmi(Isolate* isolate, Handle<Object> object) {
+  if (object->IsSmi()) return object;
+  if (object->IsHeapNumber()) {
+    double value = Handle<HeapNumber>::cast(object)->value();
+    int int_value = FastD2I(value);
+    if (value == FastI2D(int_value) && Smi::IsValid(int_value)) {
+      return handle(Smi::FromInt(int_value), isolate);
+    }
+  }
+  return Handle<Object>();
+}
+
+
+// TODO(ishell): Use handlified version instead.
 MaybeObject* Object::ToSmi() {
   if (IsSmi()) return this;
   if (IsHeapNumber()) {
     double value = HeapNumber::cast(this)->value();
     int int_value = FastD2I(value);
     if (value == FastI2D(int_value) && Smi::IsValid(int_value)) {
       return Smi::FromInt(int_value);
     }
   }
   return Failure::Exception();
@@ skipping 5741 matching lines @@
 #undef READ_UINT32_FIELD
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_