yaspgridentitypointer.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GRID_YASPGRIDENTITYPOINTER_HH
#define DUNE_GRID_YASPGRIDENTITYPOINTER_HH
 
namespace Dune {
 
  template<int codim, class GridImp>
  class YaspEntityPointer
  {
    enum { dim=GridImp::dimension };
    typedef typename GridImp::ctype ctype;
 
  public:
    typedef typename GridImp::template Codim<codim>::Entity Entity;
    typedef typename GridImp::YGridLevelIterator YGLI;
    typedef typename GridImp::YGrid::Iterator I;
    typedef YaspEntityPointer<codim,GridImp> EntityPointerImp;
  protected:
    typedef YaspEntity<codim, dim, GridImp> YaspEntityImp;
 
  public:
    enum { codimension = codim };
 
    YaspEntityPointer () :
      _entity(YaspEntityImp())
    {}
 
    YaspEntityPointer (const YGLI & g, const I& it)
      : _entity(YaspEntityImp(g,it))
    {}
 
 
// skip this constructor for GCC 4.4, which has a number of nasty bugs in its rvalue reference support
// As this behavior is hard to trigger in small configuration tests and because we'll probably drop GCC 4.4
// after the next release anyway, I hacked in this hardcoded check for the compiler version
#if not (defined(__GNUC__) && (__GNUC__ < 5) && (__GNUC_MINOR__ < 5))
 
    YaspEntityPointer (YGLI&& g, I&& it)
      : _entity(YaspEntityImp(std::move(g),std::move(it)))
    {}
 
#endif
 
    YaspEntityPointer (const YaspEntityImp& entity)
      : _entity(entity)
    {}
 
    YaspEntityPointer (YaspEntityImp&& entity)
      : _entity(std::move(entity))
    {}
 
 
    bool equals (const YaspEntityPointer& rhs) const
    {
      return (_entity == rhs._entity);
    }
 
    const Entity& dereference() const
    {
      return _entity;
    }
 
    int level () const {return _entity.level();}
 
 
  protected:
    Entity _entity; 
  };
 
}   // namespace Dune
 
#endif   // DUNE_GRID_YASPGRIDENTITYPOINTER_HH