boost/type_traits/has_trivial_copy.hpp

   1
   2 //  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
   3 //  Use, modification and distribution are subject to the Boost Software License,
   4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt).
   6 //
   7 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
   8
   9 #ifndef BOOST_TT_HAS_TRIVIAL_COPY_HPP_INCLUDED
  10 #define BOOST_TT_HAS_TRIVIAL_COPY_HPP_INCLUDED
  11
  12 #include <boost/type_traits/config.hpp>
  13 #include <boost/type_traits/intrinsics.hpp>
  14 #include <boost/type_traits/is_volatile.hpp>
  15 #include <boost/type_traits/is_pod.hpp>
  16 #include <boost/type_traits/detail/ice_and.hpp>
  17 #include <boost/type_traits/detail/ice_or.hpp>
  18 #include <boost/type_traits/detail/ice_not.hpp>
  19
  20 #ifdef __clang__
  21 #include <boost/type_traits/is_copy_constructible.hpp>
  22 #endif
  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 template <typename T>
  32 struct has_trivial_copy_impl
  33 {
  34 #ifdef BOOST_HAS_TRIVIAL_COPY
  35 #  ifdef __clang__
  36    BOOST_STATIC_CONSTANT(bool, value = BOOST_HAS_TRIVIAL_COPY(T) && boost::is_copy_constructible<T>::value);
  37 #  else
  38    BOOST_STATIC_CONSTANT(bool, value = BOOST_HAS_TRIVIAL_COPY(T));
  39 #  endif
  40 #else
  41    BOOST_STATIC_CONSTANT(bool, value =
  42       (::boost::type_traits::ice_and<
  43          ::boost::is_pod<T>::value,
  44          ::boost::type_traits::ice_not< ::boost::is_volatile<T>::value >::value
  45       >::value));
  46 #endif
  47 };
  48
  49 #ifdef __clang__
  50
  51 template <typename T, std::size_t N>
  52 struct has_trivial_copy_impl<T[N]>
  53 {
  54    static const bool value = has_trivial_copy_impl<T>::value;
  55 };
  56
  57 #endif
  58
  59 } // namespace detail
  60
  61 BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_copy,T,::boost::detail::has_trivial_copy_impl<T>::value)
  62 BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_copy_constructor,T,::boost::detail::has_trivial_copy_impl<T>::value)
  63
  64 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy,void,false)
  65 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
  66 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy,void const,false)
  67 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy,void const volatile,false)
  68 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy,void volatile,false)
  69 #endif
  70
  71 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy_constructor,void,false)
  72 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
  73 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy_constructor,void const,false)
  74 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy_constructor,void const volatile,false)
  75 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(has_trivial_copy_constructor,void volatile,false)
  76 #endif
  77
  78 } // namespace boost
  79
  80 #include <boost/type_traits/detail/bool_trait_undef.hpp>
  81
  82 #endif // BOOST_TT_HAS_TRIVIAL_COPY_HPP_INCLUDED