// Copyright (c) 2008-2009 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:

// @file

// @internalComponent

// 

//

#ifndef __RMEMCELL_H_

#define __RMEMCELL_H_

#include <e32base.h>

class RChunkPool;

class RMemCell

	{

public:

	RMemCell ( RChunkPool* aChunkPool, TUint8* aBuffer, TInt aBlockSize );	

	inline TUint8* Ptr ();

	void Free ();

	TAny* operator new ( TUint aSize, RMemCell* aPtr );

	void operator delete (  TAny* aPtr, RMemCell* aMemCell );

	inline TUint Size ();

	inline TUint8* Buffer();

	inline TInt Length() const;

	inline void SetOffset(TInt aOffset);

	inline TInt Offset() const;

	inline void SetData(TInt aOffset, TInt aLength);

	inline void Unlink();

	inline void Link(RMemCell* aBuf);

	inline RMemCell* Next ();

	RChunkPool* Pool ();	

	IMPORT_C RMemCell* Last();

	inline void SetLength ( TInt aLength );

private:

	TUint8* const 	iBuffer;

	RChunkPool* 	iChunkPool;

	const TInt 		iMaxSize;

	TInt 			iOffset;

	TInt			iLength;	

	RMemCell*		iNextCell;

	};

TUint RMemCell::Size ()	

	{

	return iMaxSize;

	}

inline TUint8* RMemCell::Buffer()

	{ 

	return iBuffer;

	}

inline TInt RMemCell::Length() const

	{ 

	return iLength; 

	}

inline void RMemCell::SetOffset(TInt aOffset)

	{ 

	iOffset = aOffset; 

	}

inline TInt RMemCell::Offset() const

	{ 

	return iOffset; 

	}

inline void RMemCell::Unlink()

	{ 

	iNextCell = NULL; 

	}

inline void RMemCell::SetData(TInt aOffset, TInt aLength)

	{ 

	SetOffset(aOffset);  

	SetLength(aLength); 

	}

inline void RMemCell::SetLength ( TInt aLength )

	{

	iLength = aLength;

	}

inline TUint8* RMemCell::Ptr ()

	{

	return iBuffer+iOffset;

	}

inline void RMemCell::Link(RMemCell* aBuf)

	{ 

	iNextCell = aBuf; 

	}

inline RMemCell* RMemCell::Next ()

	{

	return iNextCell;

	}

#endif /*__RMEMCELL_H_*/