| // (C) Copyright John Maddock & Thorsten Ottosen 2005. |
| // Use, modification and distribution are subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt). |
| // |
| // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| |
| |
| #ifndef BOOST_TT_DECAY_HPP_INCLUDED |
| #define BOOST_TT_DECAY_HPP_INCLUDED |
| |
| #include <boost/type_traits/is_array.hpp> |
| #include <boost/type_traits/is_function.hpp> |
| #include <boost/type_traits/remove_bounds.hpp> |
| #include <boost/type_traits/add_pointer.hpp> |
| #include <boost/type_traits/remove_reference.hpp> |
| #include <boost/type_traits/remove_cv.hpp> |
| |
| namespace boost |
| { |
| |
| namespace detail |
| { |
| |
| template <class T, bool Array, bool Function> struct decay_imp { typedef typename remove_cv<T>::type type; }; |
| template <class T> struct decay_imp<T, true, false> { typedef typename remove_bounds<T>::type* type; }; |
| template <class T> struct decay_imp<T, false, true> { typedef T* type; }; |
| |
| } |
| |
| template< class T > |
| struct decay |
| { |
| private: |
| typedef typename remove_reference<T>::type Ty; |
| public: |
| typedef typename boost::detail::decay_imp<Ty, boost::is_array<Ty>::value, boost::is_function<Ty>::value>::type type; |
| }; |
| |
| } // namespace boost |
| |
| |
| #endif // BOOST_TT_DECAY_HPP_INCLUDED |