sl@0: 
sl@0: #ifndef BOOST_MPL_SWITCH_HPP_INCLUDED
sl@0: #define BOOST_MPL_SWITCH_HPP_INCLUDED
sl@0: 
sl@0: // Copyright Aleksey Gurtovoy 2003-2004
sl@0: //
sl@0: // Distributed under the Boost Software License, Version 1.0. 
sl@0: // (See accompanying file LICENSE_1_0.txt or copy at 
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: //
sl@0: // See http://www.boost.org/libs/mpl for documentation.
sl@0: 
sl@0: // $Source: /cvsroot/boost/boost/boost/mpl/switch.hpp,v $
sl@0: // $Date: 2004/09/02 15:40:42 $
sl@0: // $Revision: 1.3 $
sl@0: 
sl@0: #include <boost/mpl/find_if.hpp>
sl@0: #include <boost/mpl/deref.hpp>
sl@0: #include <boost/mpl/lambda.hpp>
sl@0: #include <boost/mpl/apply.hpp>
sl@0: #include <boost/mpl/pair.hpp>
sl@0: #include <boost/mpl/aux_/na_spec.hpp>
sl@0: #include <boost/mpl/aux_/lambda_support.hpp>
sl@0: 
sl@0: namespace boost { namespace mpl {
sl@0: 
sl@0: template< 
sl@0:       typename BOOST_MPL_AUX_NA_PARAM(Body)
sl@0:     , typename BOOST_MPL_AUX_NA_PARAM(T)
sl@0:     >
sl@0: struct switch_
sl@0: {
sl@0:     typedef typename find_if<
sl@0:           Body
sl@0:         , apply1< lambda< first<_1> >, T >
sl@0:         >::type iter_;
sl@0:         
sl@0:     typedef typename deref<iter_>::type pair_;
sl@0:     typedef typename lambda< typename second<pair_>::type >::type f_;
sl@0:     typedef typename apply1<f_,T>::type type;
sl@0: 
sl@0:     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,switch_,(Body,T))
sl@0: };
sl@0: 
sl@0: BOOST_MPL_AUX_NA_SPEC(2, switch_)
sl@0: 
sl@0: }}
sl@0: 
sl@0: #endif // BOOST_MPL_SWITCH_HPP_INCLUDED