/*

* Copyright (c) 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:  MExpression interface, defines basics for all the protocol

*                expressions

*

*/

#ifndef MBPEXPRESSION_H

#define MBPEXPRESSION_H

//  INCLUDES

#include <e32def.h>

#include <e32base.h>

class MExpressionObserver;

// CLASS DECLARATION

/**

*  MProtocol interface.

*/

NONSHARABLE_CLASS( MBPExpression )

    {

    public: // Abstract functions

        /**

        * Tries to handle the message, and informs if the msg does

        * not belong to it.

        *

        * @param aData Message to parse

        * @param aStartPos The index from where the message frame begins

        * @param aLength Length of the message

        * @return ETrue if the expression can handle the message,

        *         EFalse if not.

        */

        virtual TBool HandleRecievedMsgL(  TDes8& aData,

                                           TInt& aStartPos,

                                           TInt& aLength ) = 0;

        /** Virtual destructor

        *

        */

        virtual ~MBPExpression() {};

    };

#endif      // MBPEXPRESSION_H

// End of File