boost/type_traits/is_nothrow_move_constructible.hpp

   1
   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).
   8 //
   9 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
  10
  11 #ifndef BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED
  12 #define BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED
  13
  14 #include <boost/config.hpp>
  15 #include <boost/type_traits/has_trivial_move_constructor.hpp>
  16 #include <boost/type_traits/has_nothrow_copy.hpp>
  17 #include <boost/type_traits/is_array.hpp>
  18 #include <boost/type_traits/is_reference.hpp>
  19 #include <boost/type_traits/detail/ice_or.hpp>
  20 #include <boost/type_traits/detail/ice_and.hpp>
  21 #include <boost/utility/declval.hpp>
  22 #include <boost/utility/enable_if.hpp>
  23
  24 // should be the last #include
  25 #include <boost/type_traits/detail/bool_trait_def.hpp>
  26
  27 namespace boost {
  28
  29 namespace detail{
  30
  31 #ifndef BOOST_NO_CXX11_NOEXCEPT
  32
  33 template <class T, class Enable = void>
  34 struct false_or_cpp11_noexcept_move_constructible: public ::boost::false_type {};
  35
  36 template <class T>
  37 struct false_or_cpp11_noexcept_move_constructible <
  38         T,
  39         typename ::boost::enable_if_c<sizeof(T) && BOOST_NOEXCEPT_EXPR(T(::boost::declval<T>()))>::type
  40     > : public ::boost::integral_constant<bool, BOOST_NOEXCEPT_EXPR(T(::boost::declval<T>()))>
  41 {};
  42
  43 template <class T>
  44 struct is_nothrow_move_constructible_imp{
  45    BOOST_STATIC_CONSTANT(bool, value =
  46         (::boost::type_traits::ice_and<
  47             ::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value,
  48             ::boost::type_traits::ice_not< ::boost::is_reference<T>::value >::value,
  49             ::boost::detail::false_or_cpp11_noexcept_move_constructible<T>::value
  50         >::value));
  51 };
  52
  53 #else
  54
  55 template <class T>
  56 struct is_nothrow_move_constructible_imp{
  57     BOOST_STATIC_CONSTANT(bool, value =(
  58         ::boost::type_traits::ice_and<
  59             ::boost::type_traits::ice_or<
  60                 ::boost::has_trivial_move_constructor<T>::value,
  61                 ::boost::has_nothrow_copy<T>::value
  62             >::value,
  63             ::boost::type_traits::ice_not< ::boost::is_array<T>::value >::value
  64         >::value));
  65 };
  66
  67 #endif
  68
  69 }
  70
  71 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_nothrow_move_constructible,T,::boost::detail::is_nothrow_move_constructible_imp<T>::value)
  72
  73 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void,false)
  74 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
  75 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void const,false)
  76 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void const volatile,false)
  77 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_nothrow_move_constructible,void volatile,false)
  78 #endif
  79
  80 } // namespace boost
  81
  82 #include <boost/type_traits/detail/bool_trait_undef.hpp>
  83
  84 #endif // BOOST_TT_IS_NOTHROW_MOVE_CONSTRUCTIBLE_HPP_INCLUDED