| |
| // (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_NOTHROW_CONSTRUCTOR_HPP_INCLUDED |
| #define BOOST_TT_HAS_NOTHROW_CONSTRUCTOR_HPP_INCLUDED |
| |
| #include <cstddef> // size_t |
| #include <boost/type_traits/intrinsics.hpp> |
| #include <boost/type_traits/integral_constant.hpp> |
| |
| #ifdef BOOST_HAS_NOTHROW_CONSTRUCTOR |
| |
| #if defined(BOOST_MSVC) || defined(BOOST_INTEL) |
| #include <boost/type_traits/has_trivial_constructor.hpp> |
| #endif |
| #if defined(__GNUC__ ) || defined(__SUNPRO_CC) || defined(__clang__) |
| #include <boost/type_traits/is_default_constructible.hpp> |
| #endif |
| |
| namespace boost { |
| |
| template <class T> struct has_nothrow_constructor : public integral_constant<bool, BOOST_HAS_NOTHROW_CONSTRUCTOR(T)>{}; |
| |
| #elif !defined(BOOST_NO_CXX11_NOEXCEPT) |
| |
| #include <boost/type_traits/is_default_constructible.hpp> |
| #include <boost/type_traits/remove_all_extents.hpp> |
| |
| #ifdef BOOST_MSVC |
| #pragma warning(push) |
| #pragma warning(disable:4197) // top-level volatile in cast is ignored |
| #endif |
| |
| namespace boost { namespace detail{ |
| |
| template <class T, bool b> struct has_nothrow_constructor_imp : public boost::integral_constant<bool, false>{}; |
| template <class T> struct has_nothrow_constructor_imp<T, true> : public boost::integral_constant<bool, noexcept(T())>{}; |
| template <class T, std::size_t N> struct has_nothrow_constructor_imp<T[N], true> : public has_nothrow_constructor_imp<T, true> {}; |
| } |
| |
| template <class T> struct has_nothrow_constructor : public detail::has_nothrow_constructor_imp<T, is_default_constructible<T>::value>{}; |
| |
| #ifdef BOOST_MSVC |
| #pragma warning(pop) |
| #endif |
| |
| #else |
| |
| #include <boost/type_traits/has_trivial_constructor.hpp> |
| |
| namespace boost { |
| |
| template <class T> struct has_nothrow_constructor : public ::boost::has_trivial_constructor<T> {}; |
| |
| #endif |
| |
| template<> struct has_nothrow_constructor<void> : public false_type {}; |
| #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| template<> struct has_nothrow_constructor<void const> : public false_type{}; |
| template<> struct has_nothrow_constructor<void const volatile> : public false_type{}; |
| template<> struct has_nothrow_constructor<void volatile> : public false_type{}; |
| #endif |
| |
| template <class T> struct has_nothrow_default_constructor : public has_nothrow_constructor<T>{}; |
| |
| } // namespace boost |
| |
| #endif // BOOST_TT_HAS_NOTHROW_CONSTRUCTOR_HPP_INCLUDED |