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// File:      LDOM_BasicNode.hxx
// Created:   26.06.01 14:45:03
// Author:    Alexander GRIGORIEV
// Copyright: OpenCascade 2001


#ifndef LDOM_BasicNode_HeaderFile
#define LDOM_BasicNode_HeaderFile

#include <LDOM_Node.hxx>

class LDOM_BasicElement;
class LDOM_NullPtr;
class LDOMParser;

//  Block of comments describing class LDOM_BasicNode
//

class LDOM_BasicNode 
{
 public:

  Standard_Boolean  isNull    () const {return myNodeType ==LDOM_Node::UNKNOWN;}

  LDOM_Node::NodeType getNodeType () const { return myNodeType; }

  Standard_EXPORT const LDOM_BasicNode * GetSibling () const;

 protected:
  // ---------- PROTECTED METHODS ----------

  LDOM_BasicNode () : myNodeType (LDOM_Node::UNKNOWN), mySibling (NULL) {}
  //    Empty constructor

  LDOM_BasicNode (LDOM_Node::NodeType aType)
    : myNodeType (aType), mySibling (NULL) {}
  //    Constructor

  LDOM_BasicNode (const LDOM_BasicNode& anOther)
    : myNodeType (anOther.getNodeType()), mySibling (anOther.GetSibling()) {}
  //    Copy constructor

  LDOM_BasicNode& operator =    (const LDOM_NullPtr * )
                              { myNodeType = LDOM_Node::UNKNOWN; return *this; }

  Standard_EXPORT LDOM_BasicNode& operator = (const LDOM_BasicNode& anOther);

  void SetSibling (const LDOM_BasicNode * anOther)      { mySibling = anOther; }

 protected:
  friend class LDOM_BasicElement;
  friend class LDOM_Node;
  friend class LDOMParser;
  // ---------- PROTECTED FIELDSS ----------

  LDOM_Node::NodeType   myNodeType;
  const LDOM_BasicNode  * mySibling;
};

#endif