//  (C) Copyright John Maddock 2005.

//  Use, modification and distribution are subject to the

//  Boost Software License, Version 1.0. (See accompanying file

//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_TR1_FUNCTOR_IT_HPP_INCLUDED

#  define BOOST_TR1_FUNCTOR_IT_HPP_INCLUDED

# include <boost/iterator/iterator_facade.hpp>

namespace boost{ namespace tr1_details{

template <class Func, class R>

struct functor2iterator : boost::iterator_facade<functor2iterator<Func,R>, const R, std::input_iterator_tag>

{

   functor2iterator() : m_func(0){}

   functor2iterator(Func& f)

      : m_func(&f)

   {

      m_val = (*m_func)();

   }

   const R& dereference()const

   { return m_val; }

   void increment(){ m_val = (*m_func)(); }

   bool equal(const functor2iterator&)const

   { return false; }

private:

   Func* m_func;

   R m_val;

};

} }

#endif