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// ---------------------------------------------------------------------
// $Id: mg_dof_iterator_selector.h 30036 2013-07-18 16:55:32Z maier $
//
// Copyright (C) 1998 - 2013 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------

#ifndef __deal2__mg_dof_iterator_selector_h
#define __deal2__mg_dof_iterator_selector_h


#include <deal.II/base/config.h>


DEAL_II_NAMESPACE_OPEN

template <int structdim, int dim, int spacedim> class MGDoFAccessor;
template <int dim, int spacedim> class MGDoFCellAccessor;
template <int, int, int> class InvalidAccessor;

template <typename Accessor> class TriaRawIterator;
template <typename Accessor> class TriaIterator;
template <typename Accessor> class TriaActiveIterator;


namespace internal
{
  namespace MGDoFHandler
  {
    template <int dim, int spacedim>
    class Iterators;


    /**
     * Iterators for MGDofHandler in one dimension. See the @ref Iterators module
     * for more information.
     */
    template <int spacedim>
    class Iterators<1,spacedim>
    {
    public:
      typedef dealii::MGDoFCellAccessor<1,spacedim> CellAccessor;
      typedef dealii::MGDoFAccessor<0,1,spacedim> FaceAccessor;

      typedef TriaRawIterator   <CellAccessor> raw_line_iterator;
      typedef TriaIterator      <CellAccessor> line_iterator;
      typedef TriaActiveIterator<CellAccessor> active_line_iterator;

      typedef TriaRawIterator   <InvalidAccessor<2,1,spacedim> > raw_quad_iterator;
      typedef TriaIterator      <InvalidAccessor<2,1,spacedim> > quad_iterator;
      typedef TriaActiveIterator<InvalidAccessor<2,1,spacedim> > active_quad_iterator;

      typedef TriaRawIterator   <InvalidAccessor<3,1,spacedim> > raw_hex_iterator;
      typedef TriaIterator      <InvalidAccessor<3,1,spacedim> > hex_iterator;
      typedef TriaActiveIterator<InvalidAccessor<3,1,spacedim> > active_hex_iterator;

      typedef raw_line_iterator    raw_cell_iterator;
      typedef line_iterator        cell_iterator;
      typedef active_line_iterator active_cell_iterator;

      typedef TriaRawIterator   <FaceAccessor> raw_face_iterator;
      typedef TriaIterator      <FaceAccessor> face_iterator;
      typedef TriaActiveIterator<FaceAccessor> active_face_iterator;
    };



    /**
     * Iterators for MGDofHandler in two dimensions. See the @ref Iterators module
     * for more information.
     */
    template <int spacedim>
    class Iterators<2,spacedim>
    {
    public:
      typedef dealii::MGDoFCellAccessor<2,spacedim> CellAccessor;
      typedef dealii::MGDoFAccessor<1,2,spacedim> FaceAccessor;

      typedef TriaRawIterator   <FaceAccessor> raw_line_iterator;
      typedef TriaIterator      <FaceAccessor> line_iterator;
      typedef TriaActiveIterator<FaceAccessor> active_line_iterator;

      typedef TriaRawIterator   <CellAccessor> raw_quad_iterator;
      typedef TriaIterator      <CellAccessor> quad_iterator;
      typedef TriaActiveIterator<CellAccessor> active_quad_iterator;

      typedef TriaRawIterator   <InvalidAccessor<3,2,spacedim> > raw_hex_iterator;
      typedef TriaIterator      <InvalidAccessor<3,2,spacedim> > hex_iterator;
      typedef TriaActiveIterator<InvalidAccessor<3,2,spacedim> > active_hex_iterator;

      typedef raw_quad_iterator    raw_cell_iterator;
      typedef quad_iterator        cell_iterator;
      typedef active_quad_iterator active_cell_iterator;

      typedef raw_line_iterator    raw_face_iterator;
      typedef line_iterator        face_iterator;
      typedef active_line_iterator active_face_iterator;
    };



    /**
     * Iterators for MGDofHandler in three dimensions. See the @ref Iterators module
     * for more information.
     */
    template <int spacedim>
    class Iterators<3,spacedim>
    {
    public:
      typedef dealii::MGDoFCellAccessor<3,spacedim> CellAccessor;
      typedef dealii::MGDoFAccessor<2,3,spacedim> FaceAccessor;

      typedef TriaRawIterator   <dealii::MGDoFAccessor<1,3,spacedim> >    raw_line_iterator;
      typedef TriaIterator      <dealii::MGDoFAccessor<1,3,spacedim> >       line_iterator;
      typedef TriaActiveIterator<dealii::MGDoFAccessor<1,3,spacedim> > active_line_iterator;

      typedef TriaRawIterator   <FaceAccessor> raw_quad_iterator;
      typedef TriaIterator      <FaceAccessor> quad_iterator;
      typedef TriaActiveIterator<FaceAccessor> active_quad_iterator;

      typedef TriaRawIterator   <CellAccessor> raw_hex_iterator;
      typedef TriaIterator      <CellAccessor> hex_iterator;
      typedef TriaActiveIterator<CellAccessor> active_hex_iterator;

      typedef raw_hex_iterator    raw_cell_iterator;
      typedef hex_iterator        cell_iterator;
      typedef active_hex_iterator active_cell_iterator;

      typedef raw_quad_iterator    raw_face_iterator;
      typedef quad_iterator        face_iterator;
      typedef active_quad_iterator active_face_iterator;
    };
  }
}


DEAL_II_NAMESPACE_CLOSE

#endif
/*----------------------------   mg_dof_iterator_selector.h     ---------------------------*/