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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/enable_if.hpp>
- #include <boost/type_traits/declval.hpp>
- #include <boost/type_traits/is_complete.hpp>
- #include <boost/static_assert.hpp>
- namespace boost {
- #ifdef BOOST_IS_NOTHROW_MOVE_ASSIGN
- template <class T>
- struct is_nothrow_move_assignable : public integral_constant<bool, BOOST_IS_NOTHROW_MOVE_ASSIGN(T)>
- {
- BOOST_STATIC_ASSERT_MSG(boost::is_complete<T>::value, "Arguments to is_nothrow_move_assignable must be complete types");
- };
- template <class T> struct is_nothrow_move_assignable<T const> : public false_type{};
- template <class T> struct is_nothrow_move_assignable<T volatile> : public false_type{};
- template <class T> struct is_nothrow_move_assignable<T const volatile> : public false_type{};
- template <class T> struct is_nothrow_move_assignable<T&> : public false_type{};
- #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
- template <class T> struct is_nothrow_move_assignable<T&&> : public false_type{};
- #endif
- #elif !defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(BOOST_NO_SFINAE_EXPR) && !BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40700)
- namespace detail{
- 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_<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 : public integral_constant<bool, ::boost::detail::false_or_cpp11_noexcept_move_assignable<T>::value>
- {
- BOOST_STATIC_ASSERT_MSG(boost::is_complete<T>::value, "Arguments to is_nothrow_move_assignable must be complete types");
- };
- template <class T> struct is_nothrow_move_assignable<T const> : public ::boost::false_type {};
- template <class T> struct is_nothrow_move_assignable<T const volatile> : public ::boost::false_type{};
- template <class T> struct is_nothrow_move_assignable<T volatile> : public ::boost::false_type{};
- template <class T> struct is_nothrow_move_assignable<T&> : public ::boost::false_type{};
- #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
- template <class T> struct is_nothrow_move_assignable<T&&> : public ::boost::false_type{};
- #endif
- #else
- template <class T>
- struct is_nothrow_move_assignable : public integral_constant<bool,
- (::boost::has_trivial_move_assign<T>::value || ::boost::has_nothrow_assign<T>::value) && ! ::boost::is_array<T>::value>
- {
- BOOST_STATIC_ASSERT_MSG(boost::is_complete<T>::value, "Arguments to is_nothrow_move_assignable must be complete types");
- };
- #endif
- template <> struct is_nothrow_move_assignable<void> : public false_type{};
- #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
- template <> struct is_nothrow_move_assignable<void const> : public false_type{};
- template <> struct is_nothrow_move_assignable<void const volatile> : public false_type{};
- template <> struct is_nothrow_move_assignable<void volatile> : public false_type{};
- #endif
- } // namespace boost
- #endif // BOOST_TT_IS_NOTHROW_MOVE_ASSIGNABLE_HPP_INCLUDED
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