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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2008 | |
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_PRIORITY_COMPARE_HPP | |
14 | #define BOOST_INTRUSIVE_PRIORITY_COMPARE_HPP | |
15 | ||
16 | #include <boost/intrusive/detail/config_begin.hpp> | |
17 | #include <boost/intrusive/detail/workaround.hpp> | |
18 | #include <boost/intrusive/intrusive_fwd.hpp> | |
19 | ||
20 | #include <boost/intrusive/detail/minimal_less_equal_header.hpp> | |
21 | ||
22 | #if defined(BOOST_HAS_PRAGMA_ONCE) | |
23 | # pragma once | |
24 | #endif | |
25 | ||
26 | namespace boost { | |
27 | namespace intrusive { | |
28 | ||
29 | /// @cond | |
30 | ||
31 | template<class U> | |
32 | void priority_order(); | |
33 | ||
34 | /// @endcond | |
35 | ||
36 | template <class T = void> | |
37 | struct priority_compare | |
38 | { | |
39 | //Compatibility with std::binary_function | |
40 | typedef T first_argument_type; | |
41 | typedef T second_argument_type; | |
42 | typedef bool result_type; | |
43 | ||
44 | BOOST_INTRUSIVE_FORCEINLINE bool operator()(const T &val, const T &val2) const | |
45 | { | |
46 | return priority_order(val, val2); | |
47 | } | |
48 | }; | |
49 | ||
50 | template <> | |
51 | struct priority_compare<void> | |
52 | { | |
53 | template<class T, class U> | |
54 | BOOST_INTRUSIVE_FORCEINLINE bool operator()(const T &t, const U &u) const | |
55 | { | |
56 | return priority_order(t, u); | |
57 | } | |
58 | }; | |
59 | ||
60 | /// @cond | |
61 | ||
62 | template<class PrioComp, class T> | |
63 | struct get_prio | |
64 | { | |
65 | typedef PrioComp type; | |
66 | }; | |
67 | ||
68 | ||
69 | template<class T> | |
70 | struct get_prio<void, T> | |
71 | { | |
72 | typedef ::boost::intrusive::priority_compare<T> type; | |
73 | }; | |
74 | ||
75 | /// @endcond | |
76 | ||
77 | } //namespace intrusive | |
78 | } //namespace boost | |
79 | ||
80 | #include <boost/intrusive/detail/config_end.hpp> | |
81 | ||
82 | #endif //BOOST_INTRUSIVE_PRIORITY_COMPARE_HPP |