| |
| // (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_CONSTRUCTOR_HPP_INCLUDED |
| #define BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED |
| |
| #include <boost/type_traits/intrinsics.hpp> |
| #include <boost/type_traits/is_pod.hpp> |
| #include <boost/type_traits/is_default_constructible.hpp> |
| |
| #ifdef BOOST_HAS_TRIVIAL_CONSTRUCTOR |
| #ifdef BOOST_HAS_SGI_TYPE_TRAITS |
| #include <boost/type_traits/is_same.hpp> |
| #elif defined(__GNUC__) || defined(__SUNPRO_CC) |
| #include <boost/type_traits/is_volatile.hpp> |
| #ifdef BOOST_INTEL |
| #include <boost/type_traits/is_pod.hpp> |
| #endif |
| #endif |
| #endif |
| |
| |
| #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)) || defined(BOOST_CLANG) || (defined(__SUNPRO_CC) && defined(BOOST_HAS_TRIVIAL_CONSTRUCTOR)) |
| #include <boost/type_traits/is_default_constructible.hpp> |
| #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX && is_default_constructible<T>::value |
| #else |
| // |
| // Mot all compilers, particularly older GCC versions can handle the fix above. |
| #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX |
| #endif |
| |
| namespace boost { |
| |
| template <typename T> struct has_trivial_constructor |
| #ifdef BOOST_HAS_TRIVIAL_CONSTRUCTOR |
| : public integral_constant <bool, ((::boost::is_pod<T>::value || BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)) BOOST_TT_TRIVIAL_CONSTRUCT_FIX)>{}; |
| #else |
| : public integral_constant <bool, ::boost::is_pod<T>::value>{}; |
| #endif |
| |
| template <> struct has_trivial_constructor<void> : public boost::false_type{}; |
| template <> struct has_trivial_constructor<void const> : public boost::false_type{}; |
| template <> struct has_trivial_constructor<void const volatile> : public boost::false_type{}; |
| template <> struct has_trivial_constructor<void volatile> : public boost::false_type{}; |
| |
| template <class T> struct has_trivial_default_constructor : public has_trivial_constructor<T> {}; |
| |
| #undef BOOST_TT_TRIVIAL_CONSTRUCT_FIX |
| |
| } // namespace boost |
| |
| #endif // BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED |