boost/type_traits/is_noncopyable.hpp
#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