ceph/src/boost/libs/type_traits/include/boost/type_traits/is_stateless.hpp

   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