williamr@2: 
williamr@2: #ifndef BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
williamr@2: #define BOOST_MPL_AUX_YES_NO_HPP_INCLUDED
williamr@2: 
williamr@2: // Copyright Aleksey Gurtovoy 2000-2004
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. 
williamr@2: // (See accompanying file LICENSE_1_0.txt or copy at 
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // See http://www.boost.org/libs/mpl for documentation.
williamr@2: 
williamr@2: // $Source: /cvsroot/boost/boost/boost/mpl/aux_/yes_no.hpp,v $
williamr@2: // $Date: 2005/08/25 16:27:21 $
williamr@2: // $Revision: 1.8 $
williamr@2: 
williamr@2: #include <boost/mpl/aux_/nttp_decl.hpp>
williamr@2: #include <boost/mpl/aux_/config/arrays.hpp>
williamr@2: #include <boost/mpl/aux_/config/msvc.hpp>
williamr@2: #include <boost/mpl/aux_/config/workaround.hpp>
williamr@2: 
williamr@2: 
williamr@2: namespace boost { namespace mpl { namespace aux {
williamr@2: 
williamr@2: typedef char (&no_tag)[1];
williamr@2: typedef char (&yes_tag)[2];
williamr@2: 
williamr@2: template< bool C_ > struct yes_no_tag
williamr@2: {
williamr@2:     typedef no_tag type;
williamr@2: };
williamr@2: 
williamr@2: template<> struct yes_no_tag<true>
williamr@2: {
williamr@2:     typedef yes_tag type;
williamr@2: };
williamr@2: 
williamr@2: 
williamr@2: template< BOOST_MPL_AUX_NTTP_DECL(long, n) > struct weighted_tag
williamr@2: {
williamr@2: #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
williamr@2:     typedef char (&type)[n];
williamr@2: #else
williamr@2:     char buf[n];
williamr@2:     typedef weighted_tag type;
williamr@2: #endif
williamr@2: };
williamr@2: 
williamr@2: #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
williamr@2: template<> struct weighted_tag<0>
williamr@2: {
williamr@2:     typedef char (&type)[1];
williamr@2: };
williamr@2: #endif
williamr@2: 
williamr@2: }}}
williamr@2: 
williamr@2: #endif // BOOST_MPL_AUX_YES_NO_HPP_INCLUDED