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// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
// (C) Copyright Eric Friedman 2002-2003.
// (C) Copyright Antony Polukhin 2013.
// 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_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
#define BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
#include <boost/config.hpp>
#include <boost/type_traits/has_trivial_move_assign.hpp>
#include <boost/type_traits/has_nothrow_assign.hpp>
#include <boost/type_traits/is_array.hpp>
#include <boost/type_traits/is_reference.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>
#include <boost/utility/enable_if.hpp>
#include <boost/utility/declval.hpp>
// should be the last #include
#include <boost/type_traits/detail/bool_trait_def.hpp>
namespace boost {
namespace detail{
#ifndef BOOST_NO_CXX11_NOEXCEPT
template <class T, class Enable = void>
struct false_or_cpp11_noexcept_move_assignable: public ::boost::false_type {};
template <class T>
struct false_or_cpp11_noexcept_move_assignable <
T,
typename ::boost::enable_if_c<sizeof(T) && BOOST_NOEXCEPT_EXPR(::boost::declval<T&>() = ::boost::declval<T>())>::type
> : public ::boost::integral_constant<bool, BOOST_NOEXCEPT_EXPR(::boost::declval<T&>() = ::boost::declval<T>())>
{};
template <class T>
struct is_nothrow_move_assignable_imp{
BOOST_STATIC_CONSTANT(bool, value = (
::boost::type_traits::ice_and<
::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value,
::boost::type_traits::ice_not< ::boost::is_reference<T>::value >::value,
::boost::detail::false_or_cpp11_noexcept_move_assignable<T>::value
>::value));
};
#ifdef BOOST_NO_NOEXCEPT
//
// The above logic doesn't quite work in the absense of noexcept,
// this is really to improve things with VC13:
//
template <class T>
struct is_nothrow_move_assignable_imp<T&>{ BOOST_STATIC_CONSTANT(bool, value = false); };
#endif
#else
template <class T>
struct is_nothrow_move_assignable_imp{
BOOST_STATIC_CONSTANT(bool, value = (
::boost::type_traits::ice_and<
::boost::type_traits::ice_or<
::boost::has_trivial_move_assign<T>::value,
::boost::has_nothrow_assign<T>::value
>::value,
::boost::type_traits::ice_not< ::boost::is_array<T>::value >::value
>::value));
};
#endif
}
BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_nothrow_move_assignable,T,::boost::detail::is_nothrow_move_assignable_imp<T>::value)
BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void,false)
#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void const,false)
BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void const volatile,false)
BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void volatile,false)
#endif
} // namespace boost
#include <boost/type_traits/detail/bool_trait_undef.hpp>
#endif // BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
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