59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
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#ifndef BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
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#define BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id: yes_no.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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// $Revision: 49267 $
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#include <boost/mpl/aux_/nttp_decl.hpp>
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#include <boost/mpl/aux_/config/arrays.hpp>
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#include <boost/mpl/aux_/config/msvc.hpp>
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#include <boost/mpl/aux_/config/workaround.hpp>
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namespace boost { namespace mpl { namespace aux {
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typedef char (&no_tag)[1];
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typedef char (&yes_tag)[2];
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template< bool C_ > struct yes_no_tag
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{
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typedef no_tag type;
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};
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template<> struct yes_no_tag<true>
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{
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typedef yes_tag type;
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};
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template< BOOST_MPL_AUX_NTTP_DECL(long, n) > struct weighted_tag
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{
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#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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typedef char (&type)[n];
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#else
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char buf[n];
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typedef weighted_tag type;
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#endif
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};
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#if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
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template<> struct weighted_tag<0>
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{
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typedef char (&type)[1];
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};
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#endif
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}}}
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#endif // BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
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