entityiterator.hh

// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GRID_ENTITYITERATOR_HH
#define DUNE_GRID_ENTITYITERATOR_HH
 
#include <cstddef>
#include <iterator>
 
#include <dune/grid/common/entitypointer.hh>
 
namespace Dune
{
 
  template< int codim, class Grid, class IteratorImp >
  class EntityIterator
    : public EntityPointer< Grid, IteratorImp >
  {
    typedef EntityPointer< Grid, IteratorImp > Base;
 
  protected:
    using Base::realIterator;
 
  public:
    typedef typename Grid::template Codim< codim >::Entity Entity;
 
    EntityIterator &operator++ ()
    {
      realIterator.increment();
      return *this;
    }
 
    EntityIterator ( const IteratorImp &imp )
      : Base( imp )
    {}
 
  };
 
} // namespace Dune
 
namespace std
{
 
  template< int codim, class Grid, class IteratorImp >
  struct iterator_traits< Dune::EntityIterator< codim, Grid, IteratorImp > >
  {
    typedef ptrdiff_t difference_type;
    typedef const typename Dune::EntityIterator< codim, Grid, IteratorImp >::Entity value_type;
    typedef value_type *pointer;
    typedef value_type &reference;
    typedef forward_iterator_tag iterator_category;
  };
 
} // namespace std
 
#endif // #ifndef DUNE_GRID_ENTITYITERATOR_HH