Source codes

1 files changed, 31 insertions, 0 deletions

diff --git a/ComLightLib/server/interfaceMap.h b/ComLightLib/server/interfaceMap.h
new file mode 100644
index 0000000..605ed33
--- /dev/null
+++ b/ComLightLib/server/interfaceMap.h
@@ -0,0 +1,31 @@
+#pragma once
+#include "../utils/typeTraits.hpp"
+
+// Unlike ATL, the interface map is optional for ComLight.
+// If you won't declare a map, the object will support 2 interfaces: IUnknown, and whatever template argument was passed to ObjectRoot class.
+#define BEGIN_COM_MAP()                                      \
+protected:                                                   \
+bool implQueryInterface( REFIID iid, void** ppvObject ) {
+
+#define END_COM_MAP() return false; }
+
+namespace ComLight
+{
+	namespace details
+	{
+		template<typename I, typename C>
+		inline bool tryReturnInterface( REFIID iid, C* pThis, void** ppvResult )
+		{
+			static_assert( pointersAssignable<IUnknown, I>(), "Trying to implement an interface that doesn't derive from IUnknown" );
+			static_assert( pointersAssignable<I, C>(), "Declared support for an interface, but the class doesn't implement it" );
+			if( I::iid() != iid )
+				return false;
+			I* const result = pThis;
+			result->AddRef();
+			*ppvResult = result;
+			return true;
+		}
+	}
+}
+
+#define COM_INTERFACE_ENTRY( I ) if( ComLight::details::tryReturnInterface<I>( iid, this, ppvObject ) ) return true;
\ No newline at end of file