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1 | |
2 | #ifndef BOOST_MPL_AUX_YES_NO_HPP_INCLUDED | |
3 | #define BOOST_MPL_AUX_YES_NO_HPP_INCLUDED | |
4 | ||
5 | // Copyright Aleksey Gurtovoy 2000-2004 | |
6 | // | |
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) | |
10 | // | |
11 | // See http://www.boost.org/libs/mpl for documentation. | |
12 | ||
13 | // $Id$ | |
14 | // $Date$ | |
15 | // $Revision$ | |
16 | ||
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> | |
21 | ||
22 | ||
23 | namespace boost { namespace mpl { namespace aux { | |
24 | ||
25 | typedef char (&no_tag)[1]; | |
26 | typedef char (&yes_tag)[2]; | |
27 | ||
28 | template< bool C_ > struct yes_no_tag | |
29 | { | |
30 | typedef no_tag type; | |
31 | }; | |
32 | ||
33 | template<> struct yes_no_tag<true> | |
34 | { | |
35 | typedef yes_tag type; | |
36 | }; | |
37 | ||
38 | ||
39 | template< BOOST_MPL_AUX_NTTP_DECL(long, n) > struct weighted_tag | |
40 | { | |
41 | #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300) | |
42 | typedef char (&type)[n]; | |
43 | #else | |
44 | char buf[n]; | |
45 | typedef weighted_tag type; | |
46 | #endif | |
47 | }; | |
48 | ||
49 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) | |
50 | template<> struct weighted_tag<0> | |
51 | { | |
52 | typedef char (&type)[1]; | |
53 | }; | |
54 | #endif | |
55 | ||
56 | }}} | |
57 | ||
58 | #endif // BOOST_MPL_AUX_YES_NO_HPP_INCLUDED |