pointer.hh

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/* -*- C++ -*-
 * $Id: pointer.hh 1004 2005-10-10 12:55:33Z sjoyeux $
 */
#ifndef UTILMM_SMART_POINTER_HEADER
# define UTILMM_SMART_POINTER_HEADER
#include "utilmm/config/config.h"

# include <stdexcept>

#include "utilmm/singleton/use.hh"

namespace utilmm {
  namespace smart {

    class null_access :public std::runtime_error {
    public:
      null_access(std::string const &message)
        : std::runtime_error(message) {}
    }; // class utilmm::smart::null_access
    
    template<class Manager>
    class pointer {
    private:
      singleton::use<Manager> manager;
      
    public:
      typedef typename Manager::base_type base_type;
      typedef base_type *pointer_type;
      typedef base_type &reference_type;

      explicit pointer(pointer_type ptr=0);
      pointer(pointer const &other);

      ~pointer();

      void reset(pointer_type ptr=0);

      void swap(pointer &other);
      
      pointer &operator= (pointer const &other);

      bool null() const;
      bool operator! () const;

      bool operator==(pointer const &other) const; 
      bool operator!=(pointer const &other) const;

      pointer_type operator->() const;
      reference_type operator* () const;

    private:
      typename Manager::mem_cell pointee;
    }; // class utilmm::smart::pointer<>

  } // namespace utilmm::smart
} // namespace utilmm

# define IN_UTILMM_SMART_POINTER_HEADER
#include "utilmm/smart/bits/pointer.tcc"
# undef IN_UTILMM_SMART_POINTER_HEADER
#endif // UTILMM_SMART_POINTER_HEADER