boost/type_traits/has_trivial_constructor.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_CONSTRUCTOR_HPP_INCLUDED
  10 #define BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED
  11
  12 #include <boost/type_traits/config.hpp>
  13 #include <boost/type_traits/intrinsics.hpp>
  14 #include <boost/type_traits/is_pod.hpp>
  15 #include <boost/type_traits/detail/ice_or.hpp>
  16
  17 // should be the last #include
  18 #include <boost/type_traits/detail/bool_trait_def.hpp>
  19
  20 namespace boost {
  21
  22 namespace detail {
  23
  24 template <typename T>
  25 struct has_trivial_ctor_impl
  26 {
  27 #ifdef BOOST_HAS_TRIVIAL_CONSTRUCTOR
  28    BOOST_STATIC_CONSTANT(bool, value =
  29       (::boost::type_traits::ice_or<
  30          ::boost::is_pod<T>::value,
  31          BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)
  32       >::value));
  33 #else
  34    BOOST_STATIC_CONSTANT(bool, value =
  35       (::boost::type_traits::ice_or<
  36          ::boost::is_pod<T>::value,
  37          false
  38       >::value));
  39 #endif
  40 };
  41
  42 } // namespace detail
  43
  44 BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_constructor,T,::boost::detail::has_trivial_ctor_impl<T>::value)
  45 BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_trivial_default_constructor,T,::boost::detail::has_trivial_ctor_impl<T>::value)
  46
  47 } // namespace boost
  48
  49 #include <boost/type_traits/detail/bool_trait_undef.hpp>
  50
  51 #endif // BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED