1#ifndef BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
2#define BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
3
4// MS compatible compilers support #pragma once
5#if defined(_MSC_VER)
6# pragma once
7#endif
8
9/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
10// assume_abstract_class.hpp:
11
12// (C) Copyright 2008 Robert Ramey
13// Use, modification and distribution is subject to the Boost Software
14// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
15// http://www.boost.org/LICENSE_1_0.txt)
16
17// See http://www.boost.org for updates, documentation, and revision history.
18
19// this is useful for compilers which don't support the boost::is_abstract
20
21#include <boost/type_traits/is_abstract.hpp>
22#include <boost/mpl/bool_fwd.hpp>
23
24#ifndef BOOST_NO_IS_ABSTRACT
25
26// if there is an intrinsic is_abstract defined, we don't have to do anything
27#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T)
28
29// but forward to the "official" is_abstract
30namespace boost {
31namespace serialization {
32 template<class T>
33 struct is_abstract : boost::is_abstract< T > {} ;
34} // namespace serialization
35} // namespace boost
36
37#else
38// we have to "make" one
39
40namespace boost {
41namespace serialization {
42 template<class T>
43 struct is_abstract : boost::false_type {};
44} // namespace serialization
45} // namespace boost
46
47// define a macro to make explicit designation of this more transparent
48#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T) \
49namespace boost { \
50namespace serialization { \
51template<> \
52struct is_abstract< T > : boost::true_type {}; \
53template<> \
54struct is_abstract< const T > : boost::true_type {}; \
55}} \
56/**/
57
58#endif // BOOST_NO_IS_ABSTRACT
59
60#endif //BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
61