boost/type_traits/decay.hpp
// (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