94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
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// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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// (C) Copyright Eric Friedman 2002-2003.
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// (C) Copyright Antony Polukhin 2013.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED
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#define BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED
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#include <boost/config.hpp>
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#include <boost/type_traits/has_trivial_move_constructor.hpp>
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#include <boost/type_traits/has_nothrow_copy.hpp>
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#include <boost/type_traits/is_array.hpp>
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#include <boost/type_traits/is_reference.hpp>
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#include <boost/type_traits/detail/ice_or.hpp>
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#include <boost/type_traits/detail/ice_and.hpp>
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#include <boost/utility/declval.hpp>
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#include <boost/utility/enable_if.hpp>
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// should be the last #include
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#include <boost/type_traits/detail/bool_trait_def.hpp>
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namespace boost {
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namespace detail{
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#ifndef BOOST_NO_CXX11_NOEXCEPT
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template <class T, class Enable = void>
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struct false_or_cpp11_noexcept_move_constructible: public ::boost::false_type {};
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template <class T>
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struct false_or_cpp11_noexcept_move_constructible <
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T,
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typename ::boost::enable_if_c<sizeof(T) && BOOST_NOEXCEPT_EXPR(T(::boost::declval<T>()))>::type
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> : public ::boost::integral_constant<bool, BOOST_NOEXCEPT_EXPR(T(::boost::declval<T>()))>
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{};
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template <class T>
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struct is_nothrow_move_constructible_imp{
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BOOST_STATIC_CONSTANT(bool, value =
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(::boost::type_traits::ice_and<
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::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value,
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::boost::type_traits::ice_not< ::boost::is_reference<T>::value >::value,
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::boost::detail::false_or_cpp11_noexcept_move_constructible<T>::value
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>::value));
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};
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#else
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template <class T>
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struct is_nothrow_move_constructible_imp{
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BOOST_STATIC_CONSTANT(bool, value =(
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::boost::type_traits::ice_and<
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::boost::type_traits::ice_or<
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::boost::has_trivial_move_constructor<T>::value,
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::boost::has_nothrow_copy<T>::value
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>::value,
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::boost::type_traits::ice_not< ::boost::is_array<T>::value >::value
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>::value));
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};
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#endif
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#ifdef BOOST_NO_NOEXCEPT
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//
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// The above logic doesn't quite work in the absense of noexcept,
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// this is really to improve things with VC13:
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//
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template <class T>
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struct is_nothrow_move_constructible_imp<T&>{ BOOST_STATIC_CONSTANT(bool, value = false); };
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#endif
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}
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BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_nothrow_move_constructible,T,::boost::detail::is_nothrow_move_constructible_imp<T>::value)
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BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void,false)
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#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
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BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void const,false)
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BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void const volatile,false)
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BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void volatile,false)
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#endif
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} // namespace boost
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#include <boost/type_traits/detail/bool_trait_undef.hpp>
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#endif // BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED
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