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