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 |