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| 2 | #ifndef BOOST_MPL_AUX_YES_NO_HPP_INCLUDED |
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| 3 | #define BOOST_MPL_AUX_YES_NO_HPP_INCLUDED |
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| 4 | |
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| 5 | // Copyright Aleksey Gurtovoy 2000-2004 |
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| 6 | // |
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| 7 | // Distributed under the Boost Software License, Version 1.0. |
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| 8 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 9 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 10 | // |
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| 11 | // See http://www.boost.org/libs/mpl for documentation. |
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| 12 | |
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| 13 | // $Id: yes_no.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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| 14 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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| 15 | // $Revision: 49267 $ |
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| 16 | |
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| 17 | #include <boost/mpl/aux_/nttp_decl.hpp> |
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| 18 | #include <boost/mpl/aux_/config/arrays.hpp> |
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| 19 | #include <boost/mpl/aux_/config/msvc.hpp> |
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| 20 | #include <boost/mpl/aux_/config/workaround.hpp> |
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| 21 | |
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| 22 | |
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| 23 | namespace boost { namespace mpl { namespace aux { |
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| 24 | |
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| 25 | typedef char (&no_tag)[1]; |
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| 26 | typedef char (&yes_tag)[2]; |
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| 27 | |
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| 28 | template< bool C_ > struct yes_no_tag |
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| 29 | { |
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| 30 | typedef no_tag type; |
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| 31 | }; |
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| 32 | |
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| 33 | template<> struct yes_no_tag<true> |
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| 34 | { |
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| 35 | typedef yes_tag type; |
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| 36 | }; |
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| 37 | |
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| 38 | |
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| 39 | template< BOOST_MPL_AUX_NTTP_DECL(long, n) > struct weighted_tag |
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| 40 | { |
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| 41 | #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
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| 42 | typedef char (&type)[n]; |
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| 43 | #else |
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| 44 | char buf[n]; |
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| 45 | typedef weighted_tag type; |
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| 46 | #endif |
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| 47 | }; |
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| 48 | |
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| 49 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) |
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| 50 | template<> struct weighted_tag<0> |
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| 51 | { |
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| 52 | typedef char (&type)[1]; |
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| 53 | }; |
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| 54 | #endif |
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| 55 | |
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| 56 | }}} |
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| 57 | |
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| 58 | #endif // BOOST_MPL_AUX_YES_NO_HPP_INCLUDED |
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