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- // (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;
- };
-
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- template <class T> using decay_t = typename decay<T>::type;
- #endif
- } // namespace boost
- #endif // BOOST_TT_DECAY_HPP_INCLUDED
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