1 // Copyright David Abrahams 2006. Distributed under the Boost
2 // Software License, Version 1.0. (See accompanying
3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
4 #ifndef BOOST_CONCEPT_ASSERT_DWA2006430_HPP
5 # define BOOST_CONCEPT_ASSERT_DWA2006430_HPP
6 
7 # include <boost/config.hpp>
8 # include <boost/detail/workaround.hpp>
9 
10 // The old protocol used a constraints() member function in concept
11 // checking classes.  If the compiler supports SFINAE, we can detect
12 // that function and seamlessly support the old concept checking
13 // classes.  In this release, backward compatibility with the old
14 // concept checking classes is enabled by default, where available.
15 // The old protocol is deprecated, though, and backward compatibility
16 // will no longer be the default in the next release.
17 
18 # if !defined(BOOST_NO_OLD_CONCEPT_SUPPORT)                                         \
19     && !defined(BOOST_NO_SFINAE)                                                    \
20                                                                                     \
21     && !(BOOST_WORKAROUND(__GNUC__, == 3) && BOOST_WORKAROUND(__GNUC_MINOR__, < 4)) \
22     && !(BOOST_WORKAROUND(__GNUC__, == 2))
23 
24 // Note: gcc-2.96 through 3.3.x have some SFINAE, but no ability to
25 // check for the presence of particularmember functions.
26 
27 #  define BOOST_OLD_CONCEPT_SUPPORT
28 
29 # endif
30 
31 # ifdef BOOST_MSVC
32 #  include <boost/concept/detail/msvc.hpp>
33 # elif BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
34 #  include <boost/concept/detail/borland.hpp>
35 # else
36 #  include <boost/concept/detail/general.hpp>
37 # endif
38 
39   // Usage, in class or function context:
40   //
41   //     BOOST_CONCEPT_ASSERT((UnaryFunctionConcept<F,bool,int>));
42   //
43 # define BOOST_CONCEPT_ASSERT(ModelInParens) \
44     BOOST_CONCEPT_ASSERT_FN(void(*)ModelInParens)
45 
46 #endif // BOOST_CONCEPT_ASSERT_DWA2006430_HPP
47