1 | #ifndef BOOST_BIND_ARG_HPP_INCLUDED |
2 | #define BOOST_BIND_ARG_HPP_INCLUDED |
3 | |
4 | // MS compatible compilers support #pragma once |
5 | |
6 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
7 | # pragma once |
8 | #endif |
9 | |
10 | // |
11 | // bind/arg.hpp |
12 | // |
13 | // Copyright (c) 2002 Peter Dimov and Multi Media Ltd. |
14 | // |
15 | // Distributed under the Boost Software License, Version 1.0. (See |
16 | // accompanying file LICENSE_1_0.txt or copy at |
17 | // http://www.boost.org/LICENSE_1_0.txt) |
18 | // |
19 | // See http://www.boost.org/libs/bind/bind.html for documentation. |
20 | // |
21 | |
22 | #include <boost/config.hpp> |
23 | #include <boost/is_placeholder.hpp> |
24 | #include <boost/static_assert.hpp> |
25 | |
26 | namespace boost |
27 | { |
28 | |
29 | template< int I > struct arg |
30 | { |
31 | BOOST_CONSTEXPR arg() |
32 | { |
33 | } |
34 | |
35 | template< class T > BOOST_CONSTEXPR arg( T const & /* t */ ) |
36 | { |
37 | BOOST_STATIC_ASSERT( I == is_placeholder<T>::value ); |
38 | } |
39 | }; |
40 | |
41 | template< int I > BOOST_CONSTEXPR bool operator==( arg<I> const &, arg<I> const & ) |
42 | { |
43 | return true; |
44 | } |
45 | |
46 | #if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) |
47 | |
48 | template< int I > struct is_placeholder< arg<I> > |
49 | { |
50 | enum _vt { value = I }; |
51 | }; |
52 | |
53 | template< int I > struct is_placeholder< arg<I> (*) () > |
54 | { |
55 | enum _vt { value = I }; |
56 | }; |
57 | |
58 | #endif |
59 | |
60 | } // namespace boost |
61 | |
62 | #endif // #ifndef BOOST_BIND_ARG_HPP_INCLUDED |
63 | |