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- // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
- // 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_HAS_TRIVIAL_COPY_HPP_INCLUDED
- #define BOOST_TT_HAS_TRIVIAL_COPY_HPP_INCLUDED
- #include <cstddef> // size_t
- #include <boost/type_traits/intrinsics.hpp>
- #include <boost/type_traits/is_pod.hpp>
- #include <boost/type_traits/is_reference.hpp>
- #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)) || defined(BOOST_CLANG) || (defined(__SUNPRO_CC) && defined(BOOST_HAS_TRIVIAL_COPY))
- #include <boost/type_traits/is_copy_constructible.hpp>
- #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX && is_copy_constructible<T>::value
- #else
- #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX
- #endif
- #ifdef BOOST_INTEL
- #include <boost/type_traits/add_const.hpp>
- #include <boost/type_traits/add_lvalue_reference.hpp>
- #endif
- namespace boost {
- template <typename T> struct has_trivial_copy
- : public integral_constant<bool,
- #ifdef BOOST_HAS_TRIVIAL_COPY
- BOOST_HAS_TRIVIAL_COPY(T) BOOST_TT_TRIVIAL_CONSTRUCT_FIX
- #else
- ::boost::is_pod<T>::value
- #endif
- >{};
- // Arrays are not explicitly copyable:
- template <typename T, std::size_t N> struct has_trivial_copy<T[N]> : public false_type{};
- template <typename T> struct has_trivial_copy<T[]> : public false_type{};
- // Are volatile types ever trivial? We don't really know, so assume not:
- template <typename T> struct has_trivial_copy<T volatile> : public false_type{};
- template <> struct has_trivial_copy<void> : public false_type{};
- #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
- template <> struct has_trivial_copy<void const> : public false_type{};
- template <> struct has_trivial_copy<void volatile> : public false_type{};
- template <> struct has_trivial_copy<void const volatile> : public false_type{};
- #endif
- template <class T> struct has_trivial_copy<T&> : public false_type{};
- #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
- template <class T> struct has_trivial_copy<T&&> : public false_type{};
- #endif
- template <class T> struct has_trivial_copy_constructor : public has_trivial_copy<T>{};
- #undef BOOST_TT_TRIVIAL_CONSTRUCT_FIX
- } // namespace boost
- #endif // BOOST_TT_HAS_TRIVIAL_COPY_HPP_INCLUDED
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