move/traits.hpp

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//
// (C) Copyright Ion Gaztanaga 2009-2012.
// Distributed under 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/move for documentation.
//
 
 
#ifndef BOOST_MOVE_TRAITS_HPP
#define BOOST_MOVE_TRAITS_HPP
 
#ifndef BOOST_CONFIG_HPP
#  include <boost/config.hpp>
#endif
#
#if defined(BOOST_HAS_PRAGMA_ONCE)
#  pragma once
#endif
 
#include <boost/move/detail/config_begin.hpp>
 
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
#include <boost/move/core.hpp>
#endif
#include <boost/move/detail/meta_utils.hpp>
#include <boost/move/detail/type_traits.hpp>
 
namespace boost {
 
template <class T>
struct has_trivial_destructor_after_move
   : ::boost::move_detail::is_trivially_destructible<T>
{};
 
template <class T>
struct has_nothrow_move
{
   static const bool value = boost::move_detail::is_nothrow_move_constructible<T>::value &&
                             boost::move_detail::is_nothrow_move_assignable<T>::value;
};
 
namespace move_detail {
 
template <class T>
struct is_nothrow_move_constructible_or_uncopyable
{
   //The standard requires is_nothrow_move_constructible for move_if_noexcept
   //but a user (usually in C++03) might specialize has_nothrow_move which includes it
   static const bool value = is_nothrow_move_constructible<T>::value ||
                             has_nothrow_move<T>::value ||
                            !is_copy_constructible<T>::value;
};
 
}  //move_detail {
}  //namespace boost {
 
#include <boost/move/detail/config_end.hpp>
 
#endif //#ifndef BOOST_MOVE_TRAITS_HPP