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- #ifndef BOOST_TYPE_TRAITS_IS_NONCOPYABLE_HPP_INCLUDED
- #define BOOST_TYPE_TRAITS_IS_NONCOPYABLE_HPP_INCLUDED
- //
- // Copyright 2018 Peter Dimov
- //
- // Distributed under 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
- //
- // is_noncopyable<T> returns whether T is derived from boost::noncopyable
- //
- #include <boost/type_traits/is_base_and_derived.hpp>
- namespace boost
- {
- #ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
- #define BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
- // boost::noncopyable derives from noncopyable_::base_token to enable us
- // to recognize it. The definition is macro-guarded so that we can replicate
- // it here without including boost/core/noncopyable.hpp, which is in Core.
- namespace noncopyable_
- {
- struct base_token {};
- }
- #endif // #ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
- template<class T> struct is_noncopyable: is_base_and_derived<noncopyable_::base_token, T>
- {
- };
- } // namespace boost
- #endif // #ifndef BOOST_TYPE_TRAITS_IS_NONCOPYABLE_HPP_INCLUDED
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