Add C++ implementation of Object.defineProperties

src/objects.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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1809 matching lines @@
   // Retrieves a permanent object identity hash code. The undefined value might
   // be returned in case no hash was created yet.
   inline Object* GetIdentityHash();
 
   // Retrieves a permanent object identity hash code. May create and store a
   // hash code if needed and none exists.
   inline static Handle<Smi> GetOrCreateIdentityHash(
       Handle<JSReceiver> object);
 
   enum KeyCollectionType { OWN_ONLY, INCLUDE_PROTOS };
+  enum IncludeSymbolNamedProperties { SKIP_SYMBOLS, INCLUDE_SYMBOLS };
 
   // Computes the enumerable keys for a JSObject. Used for implementing
   // "for (n in object) { }".
   MUST_USE_RESULT static MaybeHandle<FixedArray> GetKeys(
-      Handle<JSReceiver> object,
-      KeyCollectionType type);
+      Handle<JSReceiver> object, KeyCollectionType type,
+      IncludeSymbolNamedProperties include_symbols = SKIP_SYMBOLS);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSReceiver);
 };
 
 
 // The JSObject describes real heap allocated JavaScript objects with
 // properties.
 // Note that the map of JSObject changes during execution to enable inline
 // caching.
@@ skipping 177 matching lines @@
   // Retrieves an AccessorPair property from the given object. Might return
   // undefined if the property doesn't exist or is of a different kind.
   MUST_USE_RESULT static MaybeHandle<Object> GetAccessor(
       Handle<JSObject> object,
       Handle<Name> name,
       AccessorComponent component);
 
   // Defines an AccessorPair property on the given object.
   // TODO(mstarzinger): Rename to SetAccessor().
   static MaybeHandle<Object> DefineAccessor(Handle<JSObject> object,
-                                            Handle<Name> name,
+                                            Handle<Object> name,
                                             Handle<Object> getter,
                                             Handle<Object> setter,
                                             PropertyAttributes attributes);
 
   // Defines an AccessorInfo property on the given object.
   MUST_USE_RESULT static MaybeHandle<Object> SetAccessor(
       Handle<JSObject> object,
       Handle<AccessorInfo> info);
 
   // The result must be checked first for exceptions. If there's no exception,
@@ skipping 8528 matching lines @@
 
   Isolate* isolate_;
   Handle<FixedArray> keys_;
   Handle<OrderedHashSet> set_;
   int length_;
   DISALLOW_COPY_AND_ASSIGN(KeyAccumulator);
 };
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_