1 /*============================================================================= 2 Copyright (c) 2001-2014 Joel de Guzman 3 4 Distributed under the Boost Software License, Version 1.0. (See accompanying 5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 =============================================================================*/ 7 #if !defined(BOOST_SPIRIT_X3_CALC9_EXPRESSION_HPP) 8 #define BOOST_SPIRIT_X3_CALC9_EXPRESSION_HPP 9 10 #include <boost/spirit/home/x3.hpp> 11 #include "ast.hpp" 12 13 namespace client 14 { 15 namespace x3 = boost::spirit::x3; 16 namespace parser 17 { 18 struct expression_class; 19 typedef x3::rule<expression_class, ast::expression> expression_type; 20 BOOST_SPIRIT_DECLARE(expression_type); 21 } 22 23 parser::expression_type const& expression(); 24 } 25 26 #endif 27