entitypointer.hh

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// -*- mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=2 sw=2 sts=2:
#ifndef DUNE_POLYHEDRALGRID_ENTITYPOINTER_HH
#define DUNE_POLYHEDRALGRID_ENTITYPOINTER_HH
 
//- dune-grid includes
#include <dune/grid/common/grid.hh>
 
//- dune-metagrid includes
#include <opm/grid/polyhedralgrid/declaration.hh>
 
namespace Dune
{
  // PolyhedralGridEntityPointer
  // -------------------
 
  template< int codim, class Grid >
  class PolyhedralGridEntityPointer
  {
    typedef PolyhedralGridEntityPointer< codim, Grid > This;
 
  protected:
    typedef typename Grid::Traits Traits;
 
  public:
    static const int dimension = Grid::dimension;
    static const int codimension = codim;
 
    typedef typename Traits::template Codim< codimension >::Entity Entity;
 
  protected:
    typedef typename Traits::ExtraData ExtraData;
 
    typedef typename Traits::template Codim< codimension > :: EntityImpl EntityImpl;
 
  public:
    PolyhedralGridEntityPointer ( ExtraData data )
    : entity_( EntityImpl( data ) )
    {}
 
    explicit PolyhedralGridEntityPointer ( const EntityImpl &entity )
    : entity_( EntityImpl( entity ) )
    {}
 
    PolyhedralGridEntityPointer ( const This &other )
    : entity_( EntityImpl( other.entityImpl() ) )
    {}
 
    const This &operator= ( const This &other )
    {
      entityImpl() = other.entityImpl();
      return *this;
    }
 
    bool equals ( const This &other ) const
    {
      return entityImpl().equals( other.entityImpl() );
    }
 
    Entity& dereference () const
    {
      return entity_;
    }
 
    operator const Entity& () const { return entity_; }
    operator       Entity& ()       { return entity_; }
 
    int level () const { return entity_.level(); }
 
  protected:
    EntityImpl &entityImpl () const
    {
      return entity_.impl();
    }
 
    ExtraData data () const { return entityImpl().data(); }
 
  protected:
    mutable Entity entity_;
  };
 
} // namespace Dune
 
#endif // #ifndef DUNE_POLYHEDRALGRID_ENTITYPOINTER_HH