/*
* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of the License "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:
* Definition of the Swi::Sis::CCrc
*
*/
/**
@file
@released
@internalTechnology
*/
#ifndef __SISCRC_H__
#define __SISCRC_H__
#include "sisfield.h"
namespace Swi
{
namespace Sis
{
/**
* This class represents a Crc field, it can be either SisDataCrc or SisControllerCrc.
* It is described in SGL.GT0188.251.
*
* @released
* @internalTechnology
*/
class CCrc : public CField
{
public:
/**
* This creates a new CCrc object and places it on the cleanup stack.
*
* @param aDataProvider An instance of a MSisDataProvider to read the entity from.
* @param aTypeReadBehaviour Whether we need to check the sis type or not.
*
* @return An instance of CCrc representing the data read.
*/
static CCrc* NewLC(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
/**
* This creates a new CCrc object.
*
* @param aDataProvider An instance of a MSisDataProvider to read the entity from.
* @param aTypeReadBehaviour Whether we need to check the sis type or not.
*
* @return An instance of CCrc representing the data read.
*/
static CCrc* NewL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
virtual ~CCrc();
public: // Business methods
/**
* Accessor for the actual checksum.
*
* @return The checksum data as a TUint16
*/
TUint16 Checksum() const;
private: // Life cycle methods
CCrc();
/**
* The second-phase constructor.
*
* @param aDataProvider An instance of a MSisDataProvider to read the entity from.
* @param aTypeReadBehaviour Whether to check the field code or take it for granted.
*
*/
void ConstructL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour);
private:
TUint16 iChecksum;
};
inline TUint16 CCrc::Checksum() const
{
return iChecksum;
}
} // namespace Sis
} // namespace Swi
#endif // __SISCRC_H__