2 #ifndef BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
3 #define BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
5 // Copyright Aleksey Gurtovoy 2000-2004
7 // Distributed under the Boost Software License, Version 1.0.
8 // (See accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
11 // See http://www.boost.org/libs/mpl for documentation.
13 // $Id: yes_no.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
14 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
17 #include <boost/mpl/aux_/nttp_decl.hpp>
18 #include <boost/mpl/aux_/config/arrays.hpp>
19 #include <boost/mpl/aux_/config/msvc.hpp>
20 #include <boost/mpl/aux_/config/workaround.hpp>
23 namespace boost { namespace mpl { namespace aux {
25 typedef char (&no_tag)[1];
26 typedef char (&yes_tag)[2];
28 template< bool C_ > struct yes_no_tag
33 template<> struct yes_no_tag<true>
39 template< BOOST_MPL_AUX_NTTP_DECL(long, n) > struct weighted_tag
41 #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
42 typedef char (&type)[n];
45 typedef weighted_tag type;
49 #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
50 template<> struct weighted_tag<0>
52 typedef char (&type)[1];
58 #endif // BOOST_MPL_AUX_YES_NO_HPP_INCLUDED