Reintroduced dictionary that can use objects as keys.

src/handles.h

 // Copyright 2011 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 246 matching lines @@
 Handle<Object> GetPropertyWithInterceptor(Handle<JSObject> receiver,
                                           Handle<JSObject> holder,
                                           Handle<String> name,
                                           PropertyAttributes* attributes);
 
 Handle<Object> GetPrototype(Handle<Object> obj);
 
 Handle<Object> SetPrototype(Handle<JSObject> obj, Handle<Object> value);
 
 // Return the object's hidden properties object. If the object has no hidden
-// properties and create_if_needed is true, then a new hidden property object
-// will be allocated. Otherwise the Heap::undefined_value is returned.
-Handle<Object> GetHiddenProperties(Handle<JSObject> obj, bool create_if_needed);
+// properties and HiddenPropertiesFlag::ALLOW_CREATION is passed, then a new
+// hidden property object will be allocated. Otherwise Heap::undefined_value
+// is returned.
+Handle<Object> GetHiddenProperties(Handle<JSObject> obj,
+                                   JSObject::HiddenPropertiesFlag flag);
+
+int GetIdentityHash(Handle<JSObject> obj);
 
 Handle<Object> DeleteElement(Handle<JSObject> obj, uint32_t index);
 Handle<Object> DeleteProperty(Handle<JSObject> obj, Handle<String> prop);
 
 Handle<Object> LookupSingleCharacterStringFromCode(uint32_t index);
 
 Handle<JSObject> Copy(Handle<JSObject> obj);
 
 Handle<Object> SetAccessor(Handle<JSObject> obj, Handle<AccessorInfo> info);
 
@@ skipping 56 matching lines @@
 
 Handle<JSGlobalProxy> ReinitializeJSGlobalProxy(
     Handle<JSFunction> constructor,
     Handle<JSGlobalProxy> global);
 
 Handle<Object> SetPrototype(Handle<JSFunction> function,
                             Handle<Object> prototype);
 
 Handle<Object> PreventExtensions(Handle<JSObject> object);
 
+Handle<ObjectHashTable> PutIntoObjectHashTable(Handle<ObjectHashTable> table,
+                                               Handle<JSObject> key,
+                                               Handle<Object> value);
+
 // Does lazy compilation of the given function. Returns true on success and
 // false if the compilation resulted in a stack overflow.
 enum ClearExceptionFlag { KEEP_EXCEPTION, CLEAR_EXCEPTION };
 
 bool EnsureCompiled(Handle<SharedFunctionInfo> shared,
                     ClearExceptionFlag flag);
 
 bool CompileLazyShared(Handle<SharedFunctionInfo> shared,
                        ClearExceptionFlag flag);
 
@@ skipping 14 matching lines @@
   inline NoHandleAllocation();
   inline ~NoHandleAllocation();
  private:
   int level_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HANDLES_H_