1 files changed, 95 insertions, 0 deletions
diff --git a/src/md/compiler/classfactory.h b/src/md/compiler/classfactory.h
new file mode 100644
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+++ b/src/md/compiler/classfactory.h
@@ -0,0 +1,95 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+//*****************************************************************************
+// ClassFactory.h
+// 
+
+//
+// Class factories are used by the pluming in COM to activate new objects.  
+// This module contains the class factory code to instantiate the debugger
+// objects described in <cordb.h>.
+//
+//*****************************************************************************
+#ifndef __ClassFactory__h__
+#define __ClassFactory__h__
+
+#include "disp.h"
+
+
+// This typedef is for a function which will create a new instance of an object.
+typedef HRESULT (* PFN_CREATE_OBJ)(REFIID riid, void **ppvObject);
+
+//*****************************************************************************
+// This structure is used to declare a global list of coclasses.  The class
+// factory object is created with a pointer to the correct one of these, so
+// that when create instance is called, it can be created.
+//*****************************************************************************
+struct COCLASS_REGISTER
+{
+	const GUID *pClsid;					// Class ID of the coclass.
+	LPCWSTR		szProgID;				// Prog ID of the class.
+	PFN_CREATE_OBJ pfnCreateObject;		// Creation function for an instance.
+};
+
+
+
+//*****************************************************************************
+// One class factory object satifies all of our clsid's, to reduce overall 
+// code bloat.
+//*****************************************************************************
+class MDClassFactory :
+	public IClassFactory
+{
+	MDClassFactory() { }						// Can't use without data.
+	
+public:
+	MDClassFactory(const COCLASS_REGISTER *pCoClass)
+		: m_cRef(1), m_pCoClass(pCoClass)
+	{ }
+
+	virtual ~MDClassFactory() {}
+	
+	//
+	// IUnknown methods.
+	//
+
+    virtual HRESULT STDMETHODCALLTYPE QueryInterface( 
+        REFIID		riid,
+        void		**ppvObject);
+    
+    virtual ULONG STDMETHODCALLTYPE AddRef()
+	{
+		return InterlockedIncrement(&m_cRef);
+	}
+    
+    virtual ULONG STDMETHODCALLTYPE Release()
+	{
+		LONG		cRef = InterlockedDecrement(&m_cRef);
+		if (cRef <= 0)
+			delete this;
+		return (cRef);
+	}
+
+
+	//
+	// IClassFactory methods.
+	//
+
+    virtual HRESULT STDMETHODCALLTYPE CreateInstance( 
+        IUnknown	*pUnkOuter,
+        REFIID		riid,
+        void		**ppvObject);
+    
+    virtual HRESULT STDMETHODCALLTYPE LockServer( 
+        BOOL		fLock);
+
+
+private:
+	LONG		m_cRef;						// Reference count.
+	const COCLASS_REGISTER *m_pCoClass;		// The class we belong to.
+};
+
+
+
+#endif // __ClassFactory__h__