// 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:

// Internal implementation of the SUPL ASN1 Decoder

// 

//

/**

 @file

 @internalComponent

*/

#ifndef SUPL_ASN1_DECODER_IMPL_H

#define SUPL_ASN1_DECODER_IMPL_H

#include <e32std.h>

#include "suplasn1decoder.h"

// forward declarations

class CSuplMessageBase;

class ASN1PERDecodeBuffer;

class ASN1T_ULP_PDU;

class ASN1C_ULP_PDU;

/**

The class provides an internal implementation of the functionality exposed 

by the CSuplAsn1Decoder interface.

@see CSuplAsn1Decoder

@see CSuplMessageBase

@internalComponent

*/

NONSHARABLE_CLASS(CSuplAsn1DecoderImpl) : public CBase

	{

public:

	IMPORT_C static CSuplAsn1DecoderImpl* NewL();

	virtual ~CSuplAsn1DecoderImpl();

public:

	IMPORT_C CSuplMessageBase* DecodeL(const TPtrC8* aBuf, TInt& aError);

private:

	CSuplAsn1DecoderImpl();

	void ConstructL();

	TInt ProcessAsn1Error(TInt aError);

	TInt AdditionalMessageValidation();

private:

	// Objective Systems compiled object types.

	// Note that these data members object names do not meet Symbian's coding

	// standards as they are created using a third party ASN1 compilation tool.

	// ASN1 Decode Buffer Management

	ASN1PERDecodeBuffer* iDecodeBuffer;

	// SUPL message data structure and C++ management class for the data.

	// These objects are owned during the decode process. Ownership is passed

	// to a constructed CSuplMessageBase derived wrapper class, which is

	// returned to the calling function on completion of the decode operation.

	ASN1T_ULP_PDU* iData;

	ASN1C_ULP_PDU* iControl;

	};

#endif //SUPL_ASN1_DECODER_IMPL_H