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1 | // Copyright Frank Mori Hess 2009 |
2 | // | |
3 | // Use, modification and | |
4 | // distribution is subject to the Boost Software License, Version | |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | ||
8 | // For more information, see http://www.boost.org | |
9 | ||
10 | #ifndef BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP | |
11 | #define BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP | |
12 | ||
13 | #include <functional> | |
14 | ||
15 | namespace boost | |
16 | { | |
17 | namespace signals2 | |
18 | { | |
19 | namespace detail | |
20 | { | |
21 | template<unsigned, typename ... Args> class variadic_arg_type; | |
22 | ||
23 | template<typename T, typename ... Args> class variadic_arg_type<0, T, Args...> | |
24 | { | |
25 | public: | |
26 | typedef T type; | |
27 | }; | |
28 | ||
29 | template<unsigned n, typename T, typename ... Args> class variadic_arg_type<n, T, Args...> | |
30 | { | |
31 | public: | |
32 | typedef typename variadic_arg_type<n - 1, Args...>::type type; | |
33 | }; | |
34 | ||
35 | template <typename R, typename ... Args> | |
36 | struct std_functional_base | |
37 | {}; | |
38 | template <typename R, typename T1> | |
39 | struct std_functional_base<R, T1>: public std::unary_function<T1, R> | |
40 | {}; | |
41 | template <typename R, typename T1, typename T2> | |
42 | struct std_functional_base<R, T1, T2>: public std::binary_function<T1, T2, R> | |
43 | {}; | |
44 | } // namespace detail | |
45 | } // namespace signals2 | |
46 | } // namespace boost | |
47 | ||
48 | ||
49 | #endif // BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP |