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1 | // (C) Copyright John Maddock & Thorsten Ottosen 2005. |
2 | // Use, modification and distribution are subject to the Boost Software License, | |
3 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt). | |
5 | // | |
6 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. | |
7 | ||
8 | ||
9 | #ifndef BOOST_TT_DECAY_HPP_INCLUDED | |
10 | #define BOOST_TT_DECAY_HPP_INCLUDED | |
11 | ||
12 | #include <boost/type_traits/is_array.hpp> | |
13 | #include <boost/type_traits/is_function.hpp> | |
14 | #include <boost/type_traits/remove_bounds.hpp> | |
15 | #include <boost/type_traits/add_pointer.hpp> | |
16 | #include <boost/type_traits/remove_reference.hpp> | |
17 | #include <boost/type_traits/remove_cv.hpp> | |
18 | ||
19 | namespace boost | |
20 | { | |
21 | ||
22 | namespace detail | |
23 | { | |
24 | ||
25 | template <class T, bool Array, bool Function> struct decay_imp { typedef typename remove_cv<T>::type type; }; | |
26 | template <class T> struct decay_imp<T, true, false> { typedef typename remove_bounds<T>::type* type; }; | |
27 | template <class T> struct decay_imp<T, false, true> { typedef T* type; }; | |
28 | ||
29 | } | |
30 | ||
31 | template< class T > | |
32 | struct decay | |
33 | { | |
34 | private: | |
35 | typedef typename remove_reference<T>::type Ty; | |
36 | public: | |
37 | typedef typename boost::detail::decay_imp<Ty, boost::is_array<Ty>::value, boost::is_function<Ty>::value>::type type; | |
38 | }; | |
39 | ||
40 | } // namespace boost | |
41 | ||
42 | ||
43 | #endif // BOOST_TT_DECAY_HPP_INCLUDED |