ceph/src/boost/boost/type_traits/has_nothrow_destructor.hpp

   1
   2 //  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
   3 //  Use, modification and distribution are subject to the Boost Software License,
   4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt).
   6 //
   7 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
   8
   9 #ifndef BOOST_TT_HAS_NOTHROW_DESTRUCTOR_HPP_INCLUDED
  10 #define BOOST_TT_HAS_NOTHROW_DESTRUCTOR_HPP_INCLUDED
  11
  12 #include <boost/type_traits/has_trivial_destructor.hpp>
  13
  14 #if !defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(__SUNPRO_CC) && !(defined(BOOST_MSVC) && (_MSC_FULL_VER < 190023506))
  15
  16 #include <boost/type_traits/declval.hpp>
  17 #include <boost/type_traits/is_destructible.hpp>
  18 #include <boost/type_traits/is_complete.hpp>
  19 #include <boost/static_assert.hpp>
  20
  21 namespace boost{
  22
  23    namespace detail{
  24
  25       template <class T, bool b>
  26       struct has_nothrow_destructor_imp : public boost::integral_constant<bool, false>{};
  27       template <class T>
  28       struct has_nothrow_destructor_imp<T, true> : public boost::integral_constant<bool, noexcept(boost::declval<T*&>()->~T())>{};
  29
  30    }
  31
  32    template <class T> struct has_nothrow_destructor : public detail::has_nothrow_destructor_imp<T, boost::is_destructible<T>::value>
  33    {
  34       BOOST_STATIC_ASSERT_MSG(boost::is_complete<T>::value, "Arguments to has_nothrow_destructor must be complete types");
  35    };
  36    template <class T, std::size_t N> struct has_nothrow_destructor<T[N]> : public has_nothrow_destructor<T>
  37    {
  38       BOOST_STATIC_ASSERT_MSG(boost::is_complete<T>::value, "Arguments to has_nothrow_destructor must be complete types");
  39    };
  40    template <class T> struct has_nothrow_destructor<T&> : public integral_constant<bool, false>{};
  41 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
  42    template <class T> struct has_nothrow_destructor<T&&> : public integral_constant<bool, false>{};
  43 #endif
  44    template <> struct has_nothrow_destructor<void> : public false_type {};
  45 }
  46 #else
  47
  48 namespace boost {
  49
  50 template <class T> struct has_nothrow_destructor : public ::boost::has_trivial_destructor<T> {};
  51
  52 } // namespace boost
  53
  54 #endif
  55
  56 #endif // BOOST_TT_HAS_NOTHROW_DESTRUCTOR_HPP_INCLUDED