Add HasOwnProperty with array indexes

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 7159 matching lines @@
         object->GetIsolate(), object, name, object, LookupIterator::OWN);
     return HasProperty(&it);
   }
 
   Maybe<PropertyAttributes> attributes =
       JSReceiver::GetOwnPropertyAttributes(object, name);
   MAYBE_RETURN(attributes, Nothing<bool>());
   return Just(attributes.FromJust() != ABSENT);
 }
 
+Maybe<bool> JSReceiver::HasOwnProperty(Handle<JSReceiver> object,
+                                       uint32_t index) {
+  if (object->IsJSObject()) {  // Shortcut
+    LookupIterator it(object->GetIsolate(), object, index, object,
+                      LookupIterator::OWN);
+    return HasProperty(&it);
+  }
+
+  Maybe<PropertyAttributes> attributes =
+      JSReceiver::GetOwnPropertyAttributes(object, index);
+  MAYBE_RETURN(attributes, Nothing<bool>());
+  return Just(attributes.FromJust() != ABSENT);
+}
 
 Maybe<PropertyAttributes> JSReceiver::GetPropertyAttributes(
     Handle<JSReceiver> object, Handle<Name> name) {
   LookupIterator it = LookupIterator::PropertyOrElement(name->GetIsolate(),
                                                         object, name, object);
   return GetPropertyAttributes(&it);
 }
 
 
 Maybe<PropertyAttributes> JSReceiver::GetOwnPropertyAttributes(
     Handle<JSReceiver> object, Handle<Name> name) {
   LookupIterator it = LookupIterator::PropertyOrElement(
       name->GetIsolate(), object, name, object, LookupIterator::OWN);
   return GetPropertyAttributes(&it);
 }
 
+Maybe<PropertyAttributes> JSReceiver::GetOwnPropertyAttributes(
+    Handle<JSReceiver> object, uint32_t index) {
+  LookupIterator it(object->GetIsolate(), object, index, object,
+                    LookupIterator::OWN);
+  return GetPropertyAttributes(&it);
+}
 
 Maybe<bool> JSReceiver::HasElement(Handle<JSReceiver> object, uint32_t index) {
   LookupIterator it(object->GetIsolate(), object, index, object);
   return HasProperty(&it);
 }
 
 
 Maybe<PropertyAttributes> JSReceiver::GetElementAttributes(
     Handle<JSReceiver> object, uint32_t index) {
   Isolate* isolate = object->GetIsolate();
@@ skipping 702 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_