source: NonGTP/Boost/boost/indirect_reference.hpp @ 857

Revision 857, 1.1 KB checked in by igarcia, 19 years ago (diff)
RevLine 
[857]1#ifndef INDIRECT_REFERENCE_DWA200415_HPP
2# define INDIRECT_REFERENCE_DWA200415_HPP
3
4//
5// Copyright David Abrahams 2004. Use, modification and distribution is
6// subject to the Boost Software License, Version 1.0. (See accompanying
7// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
8//
9// typename indirect_reference<P>::type provides the type of *p.
10//
11// http://www.boost.org/libs/iterator/doc/pointee.html
12//
13
14# include <boost/detail/is_incrementable.hpp>
15# include <boost/iterator/iterator_traits.hpp>
16# include <boost/type_traits/remove_cv.hpp>
17# include <boost/mpl/eval_if.hpp>
18# include <boost/pointee.hpp>
19
20namespace boost {
21
22namespace detail
23{
24  template <class P>
25  struct smart_ptr_reference
26  {
27      typedef typename boost::pointee<P>::type& type;
28  };
29}
30
31template <class P>
32struct indirect_reference
33  : mpl::eval_if<
34        detail::is_incrementable<P>
35      , iterator_reference<P>
36      , detail::smart_ptr_reference<P>
37    >
38{
39};
40 
41} // namespace boost
42
43#endif // INDIRECT_REFERENCE_DWA200415_HPP
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