// Copyright (c) 1999-2009 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 "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// BNF node header

// 

//

#ifndef __CBNFNODE_H__

#define __CBNFNODE_H__

#include <e32base.h>

#include <cnode.h>

/** Declares that the "type" for node attributes is stored as a string. */

typedef const TDesC* CBNFNodeAttributeType;

#define _SHAREDSTRING(X) IMPORT_C static CBNFNodeAttributeType K##X();

#define _SHAREDSTRINGBODY(X) EXPORT_C CBNFNodeAttributeType CBNFNode::K##X() \

    { \

    _LIT(K##X, #X); \

    return &(K##X); \

    }

class CBNFNode : public CTypedNode<TInt, const TDesC*> 

/** Backus-Naur Form (BNF) node that forms part of a BNF tree (CBNFParser).

Node types are stored as TInts, and attribute types as descriptors.

@publishedAll

@released

*/

{

public:

	//##ModelId=3B666BC70146

	IMPORT_C ~CBNFNode();

	//##ModelId=3B666BC70144

	IMPORT_C static CBNFNode* NewL(TInt aType);

    _SHAREDSTRING(PreRuleCallback)

    _SHAREDSTRING(PostRuleCallback)

    _SHAREDSTRING(Reference)

    _SHAREDSTRING(RangeStart)

    _SHAREDSTRING(RangeEnd)

    _SHAREDSTRING(NMoreCount)

    _SHAREDSTRING(NMoreMinimum)

    _SHAREDSTRING(NMoreMaximum)

protected:

    IMPORT_C CBNFNode(TInt aType);

};

#endif // __CBNFNODE_H__