boost/type_traits/remove_pointer.hpp
// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
// 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_REMOVE_POINTER_HPP_INCLUDED
#define BOOST_TT_REMOVE_POINTER_HPP_INCLUDED
#include <boost/config.hpp>
#if defined(BOOST_MSVC)
#include <boost/type_traits/remove_cv.hpp>
#include <boost/type_traits/is_pointer.hpp>
#endif
namespace boost {
#if BOOST_WORKAROUND(BOOST_MSVC, < 1900)
namespace detail{
//
// We need all this crazy indirection because a type such as:
//
// T (*const)(U)
//
// Does not bind to a <T*> or <T*const> partial specialization with VC10 and earlier
//
template <class T>
struct remove_pointer_imp
{
typedef T type;
};
template <class T>
struct remove_pointer_imp<T*>
{
typedef T type;
};
template <class T, bool b>
struct remove_pointer_imp3
{
typedef typename remove_pointer_imp<typename boost::remove_cv<T>::type>::type type;
};
template <class T>
struct remove_pointer_imp3<T, false>
{
typedef T type;
};
template <class T>
struct remove_pointer_imp2
{
typedef typename remove_pointer_imp3<T, ::boost::is_pointer<T>::value>::type type;
};
}
template <class T> struct remove_pointer{ typedef typename boost::detail::remove_pointer_imp2<T>::type type; };
#else
template <class T> struct remove_pointer{ typedef T type; };
template <class T> struct remove_pointer<T*>{ typedef T type; };
template <class T> struct remove_pointer<T*const>{ typedef T type; };
template <class T> struct remove_pointer<T*volatile>{ typedef T type; };
template <class T> struct remove_pointer<T*const volatile>{ typedef T type; };
#endif
} // namespace boost
#endif // BOOST_TT_REMOVE_POINTER_HPP_INCLUDED