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 
19 namespace boost {
20 
21 template <typename T>
22 struct 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