1// Boost noncopyable.hpp header file --------------------------------------//
2
3// (C) Copyright Beman Dawes 1999-2003. Distributed under the Boost
4// Software License, Version 1.0. (See accompanying file
5// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7// See http://www.boost.org/libs/utility for documentation.
8
9#ifndef BOOST_CORE_NONCOPYABLE_HPP
10#define BOOST_CORE_NONCOPYABLE_HPP
11
12#include <boost/config.hpp>
13
14namespace boost {
15
16// Private copy constructor and copy assignment ensure classes derived from
17// class noncopyable cannot be copied.
18
19// Contributed by Dave Abrahams
20
21namespace noncopyable_ // protection from unintended ADL
22{
23 class noncopyable
24 {
25 protected:
26#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)
27 BOOST_CONSTEXPR noncopyable() = default;
28 ~noncopyable() = default;
29#else
30 noncopyable() {}
31 ~noncopyable() {}
32#endif
33#if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
34 noncopyable( const noncopyable& ) = delete;
35 noncopyable& operator=( const noncopyable& ) = delete;
36#else
37 private: // emphasize the following members are private
38 noncopyable( const noncopyable& );
39 noncopyable& operator=( const noncopyable& );
40#endif
41 };
42}
43
44typedef noncopyable_::noncopyable noncopyable;
45
46} // namespace boost
47
48#endif // BOOST_CORE_NONCOPYABLE_HPP
49

source code of boost/boost/core/noncopyable.hpp