2 // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
3 // (C) Copyright Eric Friedman 2002-2003.
4 // (C) Copyright Antony Polukhin 2013.
5 // Use, modification and distribution are subject to the Boost Software License,
6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt).
9 // See http://www.boost.org/libs/type_traits for most recent version including documentation.
11 #ifndef BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
12 #define BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
14 #include <boost/config.hpp>
15 #include <boost/type_traits/has_trivial_move_assign.hpp>
16 #include <boost/type_traits/has_nothrow_assign.hpp>
17 #include <boost/type_traits/is_array.hpp>
18 #include <boost/type_traits/is_reference.hpp>
19 #include <boost/type_traits/detail/ice_and.hpp>
20 #include <boost/type_traits/detail/ice_or.hpp>
21 #include <boost/type_traits/detail/ice_not.hpp>
22 #include <boost/utility/enable_if.hpp>
23 #include <boost/utility/declval.hpp>
25 // should be the last #include
26 #include <boost/type_traits/detail/bool_trait_def.hpp>
32 #ifndef BOOST_NO_CXX11_NOEXCEPT
34 template <class T, class Enable = void>
35 struct false_or_cpp11_noexcept_move_assignable: public ::boost::false_type {};
38 struct false_or_cpp11_noexcept_move_assignable <
40 typename ::boost::enable_if_c<sizeof(T) && BOOST_NOEXCEPT_EXPR(::boost::declval<T&>() = ::boost::declval<T>())>::type
41 > : public ::boost::integral_constant<bool, BOOST_NOEXCEPT_EXPR(::boost::declval<T&>() = ::boost::declval<T>())>
45 struct is_nothrow_move_assignable_imp{
46 BOOST_STATIC_CONSTANT(bool, value = (
47 ::boost::type_traits::ice_and<
48 ::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value,
49 ::boost::type_traits::ice_not< ::boost::is_reference<T>::value >::value,
50 ::boost::detail::false_or_cpp11_noexcept_move_assignable<T>::value
57 struct is_nothrow_move_assignable_imp{
58 BOOST_STATIC_CONSTANT(bool, value = (
59 ::boost::type_traits::ice_and<
60 ::boost::type_traits::ice_or<
61 ::boost::has_trivial_move_assign<T>::value,
62 ::boost::has_nothrow_assign<T>::value
64 ::boost::type_traits::ice_not< ::boost::is_array<T>::value >::value
72 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_nothrow_move_assignable,T,::boost::detail::is_nothrow_move_assignable_imp<T>::value)
73 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void,false)
74 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
75 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void const,false)
76 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void const volatile,false)
77 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_assignable,void volatile,false)
82 #include <boost/type_traits/detail/bool_trait_undef.hpp>
84 #endif // BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED