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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
14 namespace 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
21 namespace 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
44 typedef noncopyable_::noncopyable noncopyable;
45
46 } // namespace boost
47
48 #endif  // BOOST_CORE_NONCOPYABLE_HPP