74 lines
2.6 KiB
Plaintext
74 lines
2.6 KiB
Plaintext
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// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_HAS_NOTHROW_CONSTRUCTOR_HPP_INCLUDED
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#define BOOST_TT_HAS_NOTHROW_CONSTRUCTOR_HPP_INCLUDED
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#include <cstddef> // size_t
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#include <boost/type_traits/intrinsics.hpp>
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#include <boost/type_traits/integral_constant.hpp>
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#ifdef BOOST_HAS_NOTHROW_CONSTRUCTOR
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#if defined(BOOST_MSVC) || defined(BOOST_INTEL)
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#include <boost/type_traits/has_trivial_constructor.hpp>
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#endif
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#if defined(__GNUC__ ) || defined(__SUNPRO_CC) || defined(__clang__)
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#include <boost/type_traits/is_default_constructible.hpp>
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#endif
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namespace boost {
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template <class T> struct has_nothrow_constructor : public integral_constant<bool, BOOST_HAS_NOTHROW_CONSTRUCTOR(T)>{};
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#elif !defined(BOOST_NO_CXX11_NOEXCEPT)
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#include <boost/type_traits/is_default_constructible.hpp>
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#include <boost/type_traits/remove_all_extents.hpp>
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable:4197) // top-level volatile in cast is ignored
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#endif
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namespace boost { namespace detail{
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template <class T, bool b> struct has_nothrow_constructor_imp : public boost::integral_constant<bool, false>{};
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template <class T> struct has_nothrow_constructor_imp<T, true> : public boost::integral_constant<bool, noexcept(T())>{};
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template <class T, std::size_t N> struct has_nothrow_constructor_imp<T[N], true> : public has_nothrow_constructor_imp<T, true> {};
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}
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template <class T> struct has_nothrow_constructor : public detail::has_nothrow_constructor_imp<T, is_default_constructible<T>::value>{};
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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#else
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#include <boost/type_traits/has_trivial_constructor.hpp>
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namespace boost {
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template <class T> struct has_nothrow_constructor : public ::boost::has_trivial_constructor<T> {};
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#endif
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template<> struct has_nothrow_constructor<void> : public false_type {};
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#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
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template<> struct has_nothrow_constructor<void const> : public false_type{};
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template<> struct has_nothrow_constructor<void const volatile> : public false_type{};
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template<> struct has_nothrow_constructor<void volatile> : public false_type{};
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#endif
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template <class T> struct has_nothrow_default_constructor : public has_nothrow_constructor<T>{};
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} // namespace boost
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#endif // BOOST_TT_HAS_NOTHROW_CONSTRUCTOR_HPP_INCLUDED
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