Chris@16: 
Chris@16: #ifndef BOOST_MPL_SWITCH_HPP_INCLUDED
Chris@16: #define BOOST_MPL_SWITCH_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2003-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/find_if.hpp>
Chris@16: #include <boost/mpl/deref.hpp>
Chris@16: #include <boost/mpl/lambda.hpp>
Chris@16: #include <boost/mpl/apply.hpp>
Chris@16: #include <boost/mpl/pair.hpp>
Chris@16: #include <boost/mpl/aux_/na_spec.hpp>
Chris@16: #include <boost/mpl/aux_/lambda_support.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: template< 
Chris@16:       typename BOOST_MPL_AUX_NA_PARAM(Body)
Chris@16:     , typename BOOST_MPL_AUX_NA_PARAM(T)
Chris@16:     >
Chris@16: struct switch_
Chris@16: {
Chris@16:     typedef typename find_if<
Chris@16:           Body
Chris@16:         , apply1< lambda< first<_1> >, T >
Chris@16:         >::type iter_;
Chris@16:         
Chris@16:     typedef typename deref<iter_>::type pair_;
Chris@16:     typedef typename lambda< typename second<pair_>::type >::type f_;
Chris@16:     typedef typename apply1<f_,T>::type type;
Chris@16: 
Chris@16:     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,switch_,(Body,T))
Chris@16: };
Chris@16: 
Chris@16: BOOST_MPL_AUX_NA_SPEC(2, switch_)
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_SWITCH_HPP_INCLUDED