Source codes

1 files changed, 51 insertions, 0 deletions

diff --git a/ComLightLib/server/ObjectRoot.hpp b/ComLightLib/server/ObjectRoot.hpp
new file mode 100644
index 0000000..1cc8f4d
--- /dev/null
+++ b/ComLightLib/server/ObjectRoot.hpp
@@ -0,0 +1,51 @@
+#pragma once
+#include "RefCounter.hpp"
+#include "../comLightCommon.h"
+#include "../utils/typeTraits.hpp"
+
+namespace ComLight
+{
+	// Base class of objects, implements reference counting, also a few lifetime methods.
+	// The template argument is the interface you want clients to get when they ask for IID_IUnknown. By convention, that pointer defines object's identity.
+	template<class I>
+	class ObjectRoot : public RefCounter, public I
+	{
+	protected:
+
+		inline HRESULT internalFinalConstruct()
+		{
+			return S_FALSE;
+		}
+
+		inline HRESULT FinalConstruct()
+		{
+			return S_FALSE;
+		}
+
+		inline void FinalRelease() { }
+
+		IUnknown* getUnknown()
+		{
+			static_assert( details::pointersAssignable<IUnknown, I>(), "The interface doesn't derive from IUnknown" );
+			return static_cast<I*>( this );
+		}
+
+		bool queryExtraInterfaces( REFIID riid, void **ppvObject ) const
+		{
+			return false;
+		}
+
+		// Implement query interface with 2 entries, IUnknown and I.
+		bool implQueryInterface( REFIID riid, void** ppvObject )
+		{
+			if( riid == I::iid() || riid == IUnknown::iid() )
+			{
+				I* const result = this;
+				result->AddRef();
+				*ppvObject = result;
+				return true;
+			}
+			return false;
+		}
+	};
+}
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