has_trivial_assign.hpp

来自「CGAL is a collaborative effort of severa」· HPP 代码 · 共 51 行

//  (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_HAS_TRIVIAL_ASSIGN_HPP_INCLUDED
#define BOOST_TT_HAS_TRIVIAL_ASSIGN_HPP_INCLUDED

#include "boost/type_traits/config.hpp"
#include "boost/type_traits/intrinsics.hpp"
#include "boost/type_traits/is_pod.hpp"
#include "boost/type_traits/is_const.hpp"
#include "boost/type_traits/is_volatile.hpp"
#include "boost/type_traits/detail/ice_and.hpp"
#include "boost/type_traits/detail/ice_or.hpp"
#include "boost/type_traits/detail/ice_not.hpp"

// should be the last #include
#include "boost/type_traits/detail/bool_trait_def.hpp"

namespace boost {

namespace detail {

template <typename T>
struct has_trivial_assign_impl
{
   BOOST_STATIC_CONSTANT(bool, value =
      (::boost::type_traits::ice_and<
         ::boost::type_traits::ice_or<
            ::boost::is_pod<T>::value,
            BOOST_HAS_TRIVIAL_ASSIGN(T)
         >::value,
      ::boost::type_traits::ice_not< ::boost::is_const<T>::value >::value,
      ::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value
      >::value));
};

} // namespace detail

BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_assign,T,::boost::detail::has_trivial_assign_impl<T>::value)

} // namespace boost

#include "boost/type_traits/detail/bool_trait_undef.hpp"

#endif // BOOST_TT_HAS_TRIVIAL_ASSIGN_HPP_INCLUDED