//  SMESH SMDS : implementaion of Salome mesh data structure
//
//  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 
// 
//  This library is free software; you can redistribute it and/or 
//  modify it under the terms of the GNU Lesser General Public 
//  License as published by the Free Software Foundation; either 
//  version 2.1 of the License. 
// 
//  This library is distributed in the hope that it will be useful, 
//  but WITHOUT ANY WARRANTY; without even the implied warranty of 
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
//  Lesser General Public License for more details. 
// 
//  You should have received a copy of the GNU Lesser General Public 
//  License along with this library; if not, write to the Free Software 
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA 
// 
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//
//
// File      : SMDS_SetIterator.hxx
// Created   : Mon Feb 27 16:57:43 2006
// Author    : Edward AGAPOV (eap)


#ifndef SMDS_SetIterator_HeaderFile
#define SMDS_SetIterator_HeaderFile

#include "SMDS_Iterator.hxx"

///////////////////////////////////////////////////////////////////////////////
/// specific SMDS_Iterator iterating over abstract set of values like STL containers
///
/// BE CAREFUL: iterator pointed value is static_cast'ed to VALUE
///
///////////////////////////////////////////////////////////////////////////////

template<typename VALUE, typename VALUE_SET_ITERATOR>
class SMDS_SetIterator : public SMDS_Iterator<VALUE>
{
protected:
  VALUE_SET_ITERATOR _beg, _end;
public:
  SMDS_SetIterator(const VALUE_SET_ITERATOR & begin,
                   const VALUE_SET_ITERATOR & end)
  { init ( begin, end ); }

  /// Initialization
  virtual void init(const VALUE_SET_ITERATOR & begin,
                    const VALUE_SET_ITERATOR & end)
  { _beg = begin; _end = end; }

  /// Return true if and only if there are other object in this iterator
  virtual bool more() { return _beg != _end; }

  /// Return the current object and step to the next one
  virtual VALUE next() { return static_cast<VALUE>( *_beg++ ); }

};

// useful specifications

#include <vector>

class SMDS_MeshElement;
class SMDS_MeshNode;

typedef const SMDS_MeshElement* SMDS_pElement;
typedef const SMDS_MeshNode*    SMDS_pNode;

// element iterators

typedef SMDS_SetIterator< SMDS_pElement, std::vector< SMDS_pElement >::const_iterator>
SMDS_ElementVectorIterator;


typedef SMDS_SetIterator< SMDS_pElement, SMDS_pElement const *>
SMDS_ElementArrayIterator;


typedef SMDS_SetIterator< SMDS_pElement, std::vector< SMDS_pNode >::const_iterator>
SMDS_NodeVectorElemIterator;


typedef SMDS_SetIterator< SMDS_pElement, SMDS_pNode const * >
SMDS_NodeArrayElemIterator;

// node iterators

typedef SMDS_SetIterator< SMDS_pNode, std::vector< SMDS_pNode >::const_iterator >
SMDS_NodeVectorIterator;


typedef SMDS_SetIterator< SMDS_pNode, SMDS_pNode const * >
SMDS_NodeArrayIterator;


#endif