1 | ///////////////////////////////////////////////////////////////////////////// |
---|---|
2 | // |
3 | // (C) Copyright Ion Gaztanaga 2006-2013 |
4 | // |
5 | // Distributed under the Boost Software License, Version 1.0. |
6 | // (See accompanying file LICENSE_1_0.txt or copy at |
7 | // http://www.boost.org/LICENSE_1_0.txt) |
8 | // |
9 | // See http://www.boost.org/libs/intrusive for documentation. |
10 | // |
11 | ///////////////////////////////////////////////////////////////////////////// |
12 | |
13 | #ifndef BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_HPP |
14 | #define BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_HPP |
15 | |
16 | #include <boost/intrusive/detail/config_begin.hpp> |
17 | #include <boost/intrusive/intrusive_fwd.hpp> |
18 | #include <boost/intrusive/link_mode.hpp> |
19 | #include <boost/intrusive/pointer_traits.hpp> |
20 | |
21 | #if defined(BOOST_HAS_PRAGMA_ONCE) |
22 | # pragma once |
23 | #endif |
24 | |
25 | namespace boost { |
26 | namespace intrusive { |
27 | |
28 | //!This value traits template is used to create value traits |
29 | //!from user defined node traits where value_traits::value_type and |
30 | //!node_traits::node should be equal |
31 | template<class NodeTraits, link_mode_type LinkMode |
32 | #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED |
33 | = safe_link |
34 | #endif |
35 | > |
36 | struct trivial_value_traits |
37 | { |
38 | typedef NodeTraits node_traits; |
39 | typedef typename node_traits::node_ptr node_ptr; |
40 | typedef typename node_traits::const_node_ptr const_node_ptr; |
41 | typedef typename node_traits::node value_type; |
42 | typedef node_ptr pointer; |
43 | typedef const_node_ptr const_pointer; |
44 | static const link_mode_type link_mode = LinkMode; |
45 | static node_ptr to_node_ptr (value_type &value) |
46 | { return pointer_traits<node_ptr>::pointer_to(value); } |
47 | static const_node_ptr to_node_ptr (const value_type &value) |
48 | { return pointer_traits<const_node_ptr>::pointer_to(value); } |
49 | static const pointer & to_value_ptr(const node_ptr &n) { return n; } |
50 | static const const_pointer &to_value_ptr(const const_node_ptr &n) { return n; } |
51 | }; |
52 | |
53 | } //namespace intrusive |
54 | } //namespace boost |
55 | |
56 | #include <boost/intrusive/detail/config_end.hpp> |
57 | |
58 | #endif //BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_HPP |
59 |