// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// This file contains the definition for the TImplementationProxy structure.

// 

//

/**

 @file

 @publishedAll

 @released

*/

#ifndef __IMPLEMENTATIONPROXY_H__

#define __IMPLEMENTATIONPROXY_H__

// ____________________________________________________________________________

// INCLUDES

#include <e32std.h>

// ____________________________________________________________________________

// TYPES - TImplementationProxy

/**

Pre-defined function pointer type used in TImplementationProxy

@leave		KErrNoMemory

@leave      Or any of the System Wide error codes

@return     TAny* A pointer to the instantiated interface implementation.

*/

typedef TAny* (*TFuncPtr)();

/**

Typedef used to cover the difference between EABI and older handling

of the instantiation method pointer.

*/

#if  defined(__EABI__) || defined(__GCCXML__) || defined(__X86GCC__) || defined(__GCCE__)

  typedef TFuncPtr TProxyNewLPtr;

#else

  typedef TAny* TProxyNewLPtr;

#endif

/**

The structure that defines the pairing required by the ECOM framework

to correctly identify the instantiation method pointer to provide

to a client's resolution request.

*/

typedef struct

	{

	/** The unique UID for an Interface Implementation */

	TUid	iImplementationUid;

	/** The pointer to the instantiation method for the Interface Implementation identified by the UID.*/

	TProxyNewLPtr iNewLFuncPtr;

	} TImplementationProxy;

/**

Macro to initialise an element of a static array of TImplementationProxy objects.

This macro deals with casting the function pointer to the type used in the structure.

*/

#define IMPLEMENTATION_PROXY_ENTRY(aUid, aFuncPtr)	{{aUid},(TProxyNewLPtr)(aFuncPtr)}

#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <ecom/extendedinterfaceimplementationproxy.h>

#endif

#endif	// __IMPLEMENTATIONPROXY_H__