Add HasOwnProperty with array indexes

src/api.cc

 // 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 4167 matching lines @@
                                        Local<Name> key) {
   PREPARE_FOR_EXECUTION_PRIMITIVE(context, Object, HasOwnProperty, bool);
   auto self = Utils::OpenHandle(this);
   auto key_val = Utils::OpenHandle(*key);
   auto result = i::JSReceiver::HasOwnProperty(self, key_val);
   has_pending_exception = result.IsNothing();
   RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
   return result;
 }
 
+Maybe<bool> v8::Object::HasOwnProperty(Local<Context> context, uint32_t index) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  return HasOwnProperty(
+      context, Utils::ToLocal(isolate->factory()->Uint32ToString(index)));

[Toon Verwaest, 2016/06/22 09:41:31]

You'll want to add a JSReceiver::HasOwnProperty with uint32_t key that uses a
LookupIterator it(isolate, obj, index, obj LookupIterator::OWN) for performance
and additional conversion avoidance.

+}
 
 bool v8::Object::HasOwnProperty(Local<String> key) {
   auto context = ContextFromHeapObject(Utils::OpenHandle(this));
   return HasOwnProperty(context, key).FromMaybe(false);
 }
 
 
 Maybe<bool> v8::Object::HasRealNamedProperty(Local<Context> context,
                                              Local<Name> key) {
   PREPARE_FOR_EXECUTION_PRIMITIVE(context, Object, HasRealNamedProperty, bool);
@@ skipping 4680 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8