1
2// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
3// Use, modification and distribution are subject to the Boost Software License,
4// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt).
6//
7// See http://www.boost.org/libs/type_traits for most recent version including documentation.
8
9#ifndef BOOST_TT_IS_STATELESS_HPP_INCLUDED
10#define BOOST_TT_IS_STATELESS_HPP_INCLUDED
11
12#include <boost/type_traits/has_trivial_constructor.hpp>
13#include <boost/type_traits/has_trivial_copy.hpp>
14#include <boost/type_traits/has_trivial_destructor.hpp>
15#include <boost/type_traits/is_class.hpp>
16#include <boost/type_traits/is_empty.hpp>
17#include <boost/config.hpp>
18
19namespace boost {
20
21template <typename T>
22struct is_stateless
23 : public integral_constant<bool,
24 (::boost::has_trivial_constructor<T>::value
25 && ::boost::has_trivial_copy<T>::value
26 && ::boost::has_trivial_destructor<T>::value
27 && ::boost::is_class<T>::value
28 && ::boost::is_empty<T>::value)>
29{};
30
31} // namespace boost
32
33#endif // BOOST_TT_IS_STATELESS_HPP_INCLUDED
34

source code of boost/boost/type_traits/is_stateless.hpp