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Diffstat (limited to 'src/third_party/boost-1.60.0/boost/type_traits/is_default_constructible.hpp')
-rw-r--r-- | src/third_party/boost-1.60.0/boost/type_traits/is_default_constructible.hpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/third_party/boost-1.60.0/boost/type_traits/is_default_constructible.hpp b/src/third_party/boost-1.60.0/boost/type_traits/is_default_constructible.hpp new file mode 100644 index 00000000000..7fd63f8969e --- /dev/null +++ b/src/third_party/boost-1.60.0/boost/type_traits/is_default_constructible.hpp @@ -0,0 +1,64 @@ + +// (C) Copyright John Maddock 2015. +// 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_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED +#define BOOST_TT_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED + +#include <boost/type_traits/integral_constant.hpp> +#include <boost/detail/workaround.hpp> + +#if !defined(BOOST_NO_CXX11_DECLTYPE) && !BOOST_WORKAROUND(BOOST_MSVC, < 1800) && !BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40500) + +#include <boost/type_traits/detail/yes_no_type.hpp> + +namespace boost{ + + namespace detail{ + + struct is_default_constructible_imp + { + template<typename _Tp, typename = decltype(_Tp())> + static boost::type_traits::yes_type test(int); + + template<typename> + static boost::type_traits::no_type test(...); + }; + + } + + template <class T> struct is_default_constructible : public integral_constant<bool, sizeof(detail::is_default_constructible_imp::test<T>(0)) == sizeof(boost::type_traits::yes_type)>{}; + template <class T, std::size_t N> struct is_default_constructible<T[N]> : public is_default_constructible<T>{}; + template <class T> struct is_default_constructible<T[]> : public is_default_constructible<T>{}; + template <class T> struct is_default_constructible<T&> : public integral_constant<bool, false>{}; +#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) + template <class T> struct is_default_constructible<T&&> : public integral_constant<bool, false>{}; +#endif + template <> struct is_default_constructible<void> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void const> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void volatile> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void const volatile> : public integral_constant<bool, false>{}; + +#else + +#include <boost/type_traits/is_pod.hpp> + +namespace boost{ + + // We don't know how to implement this, note we can not use has_trivial_constructor here + // because the correct implementation of that trait requires this one: + template <class T> struct is_default_constructible : public is_pod<T>{}; + template <> struct is_default_constructible<void> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void const> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void volatile> : public integral_constant<bool, false>{}; + template <> struct is_default_constructible<void const volatile> : public integral_constant<bool, false>{}; + +#endif + +} // namespace boost + +#endif // BOOST_TT_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED |