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1 | // |
2 | // detail/type_traits.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #ifndef BOOST_ASIO_DETAIL_TYPE_TRAITS_HPP | |
12 | #define BOOST_ASIO_DETAIL_TYPE_TRAITS_HPP | |
13 | ||
14 | #if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
15 | # pragma once | |
16 | #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) | |
17 | ||
18 | #include <boost/asio/detail/config.hpp> | |
19 | ||
20 | #if defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS) | |
21 | # include <type_traits> | |
22 | #else // defined(BOOST_ASIO_HAS_TYPE_TRAITS) | |
23 | # include <boost/type_traits/add_const.hpp> | |
24 | # include <boost/type_traits/is_const.hpp> | |
25 | # include <boost/type_traits/is_convertible.hpp> | |
26 | # include <boost/type_traits/is_function.hpp> | |
27 | # include <boost/type_traits/is_same.hpp> | |
28 | # include <boost/type_traits/remove_pointer.hpp> | |
29 | # include <boost/type_traits/remove_reference.hpp> | |
30 | # include <boost/utility/enable_if.hpp> | |
31 | #endif // defined(BOOST_ASIO_HAS_TYPE_TRAITS) | |
32 | ||
33 | namespace boost { | |
34 | namespace asio { | |
35 | ||
36 | #if defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS) | |
37 | using std::add_const; | |
38 | using std::enable_if; | |
39 | using std::is_const; | |
40 | using std::is_convertible; | |
41 | using std::is_function; | |
42 | using std::is_same; | |
43 | using std::remove_pointer; | |
44 | using std::remove_reference; | |
45 | #else // defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS) | |
46 | using boost::add_const; | |
47 | template <bool Condition, typename Type = void> | |
48 | struct enable_if : boost::enable_if_c<Condition, Type> {}; | |
49 | using boost::is_const; | |
50 | using boost::is_convertible; | |
51 | using boost::is_function; | |
52 | using boost::is_same; | |
53 | using boost::remove_pointer; | |
54 | using boost::remove_reference; | |
55 | #endif // defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS) | |
56 | ||
57 | } // namespace asio | |
58 | } // namespace boost | |
59 | ||
60 | #endif // BOOST_ASIO_DETAIL_TYPE_TRAITS_HPP |