| // Copyright 2008 Christophe Henry |
| // henry UNDERSCORE christophe AT hotmail DOT com |
| // This is an extended version of the state machine available in the boost::mpl library |
| // Distributed under the same license as the original. |
| // Copyright for the original version: |
| // Copyright 2005 David Abrahams and Aleksey Gurtovoy. 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) |
| |
| #ifndef BOOST_MSM_GRAMMAR_H |
| #define BOOST_MSM_GRAMMAR_H |
| |
| #include <boost/msm/common.hpp> |
| |
| |
| namespace boost { namespace msm |
| { |
| // base grammar for all of msm's proto-based grammars |
| struct basic_grammar : proto::_ |
| {}; |
| |
| // Forward-declare an expression wrapper |
| template<typename Expr> |
| struct msm_terminal; |
| |
| struct msm_domain |
| : proto::domain< proto::generator<msm_terminal>, basic_grammar > |
| {}; |
| |
| template<typename Expr> |
| struct msm_terminal |
| : proto::extends<Expr, msm_terminal<Expr>, msm_domain> |
| { |
| typedef |
| proto::extends<Expr, msm_terminal<Expr>, msm_domain> |
| base_type; |
| // Needs a constructor |
| msm_terminal(Expr const &e = Expr()) |
| : base_type(e) |
| {} |
| }; |
| |
| } } // boost::msm |
| #endif //BOOST_MSM_GRAMMAR_H |
| |