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 
20 namespace boost {
21 
22 namespace detail
23 {
24   template <class P>
25   struct smart_ptr_reference
26   {
27       typedef typename boost::pointee<P>::type& type;
28   };
29 }
30 
31 template <class P>
32 struct 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
44