#ifndef BOOST_METAPARSE_V1_EXCEPT_HPP #define BOOST_METAPARSE_V1_EXCEPT_HPP // Copyright Abel Sinkovics (abel@sinkovics.hu) 2009 - 2011. // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #include <boost/metaparse/v1/is_error.hpp> #include <boost/metaparse/v1/accept.hpp> #include <boost/metaparse/v1/reject.hpp> #include <boost/mpl/if.hpp> namespace boost { namespace metaparse { namespace v1 { template <class P, class Result, class ErrorMsg> struct except { typedef except type; template <class S, class Pos> struct apply : boost::mpl::if_< is_error<typename P::template apply<S, Pos> >, accept<Result, S, Pos>, reject<ErrorMsg, Pos> > {}; }; } } } #endif