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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2014-2014. Distributed under the Boost | |
4 | // Software License, Version 1.0. (See accompanying file | |
5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | // | |
7 | // See http://www.boost.org/libs/container for documentation. | |
8 | // | |
9 | /////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef BOOST_CONTAINER_DETAIL_COMPARE_FUNCTORS_HPP | |
12 | #define BOOST_CONTAINER_DETAIL_COMPARE_FUNCTORS_HPP | |
13 | ||
14 | #ifndef BOOST_CONFIG_HPP | |
15 | # include <boost/config.hpp> | |
16 | #endif | |
17 | ||
18 | #if defined(BOOST_HAS_PRAGMA_ONCE) | |
19 | # pragma once | |
20 | #endif | |
21 | ||
22 | namespace boost { | |
23 | namespace container { | |
24 | ||
25 | template<class Allocator> | |
26 | class equal_to_value | |
27 | { | |
28 | typedef typename Allocator::value_type value_type; | |
29 | const value_type &t_; | |
30 | ||
31 | public: | |
32 | explicit equal_to_value(const value_type &t) | |
33 | : t_(t) | |
34 | {} | |
35 | ||
36 | bool operator()(const value_type &t)const | |
37 | { return t_ == t; } | |
38 | }; | |
39 | ||
40 | template<class Node, class Pred> | |
41 | struct value_to_node_compare | |
42 | : Pred | |
43 | { | |
44 | typedef Pred predicate_type; | |
45 | typedef Node node_type; | |
46 | ||
47 | value_to_node_compare() | |
48 | : Pred() | |
49 | {} | |
50 | ||
51 | explicit value_to_node_compare(Pred pred) | |
52 | : Pred(pred) | |
53 | {} | |
54 | ||
55 | bool operator()(const Node &a, const Node &b) const | |
56 | { return static_cast<const Pred&>(*this)(a.get_data(), b.get_data()); } | |
57 | ||
58 | bool operator()(const Node &a) const | |
59 | { return static_cast<const Pred&>(*this)(a.get_data()); } | |
60 | ||
61 | bool operator()(const Node &a, const Node &b) | |
62 | { return static_cast<Pred&>(*this)(a.get_data(), b.get_data()); } | |
63 | ||
64 | bool operator()(const Node &a) | |
65 | { return static_cast<Pred&>(*this)(a.get_data()); } | |
66 | ||
67 | predicate_type & predicate() { return static_cast<predicate_type&>(*this); } | |
68 | const predicate_type & predicate() const { return static_cast<predicate_type&>(*this); } | |
69 | }; | |
70 | ||
71 | } //namespace container { | |
72 | } //namespace boost { | |
73 | ||
74 | #endif //BOOST_CONTAINER_DETAIL_COMPARE_FUNCTORS_HPP |