| 1 | /*============================================================================= |
| 2 | Copyright (c) 2001-2011 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_CALC7_EXPRESSION_HPP) |
| 8 | #define BOOST_SPIRIT_CALC7_EXPRESSION_HPP |
| 9 | |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | // Spirit v2.5 allows you to suppress automatic generation |
| 12 | // of predefined terminals to speed up complation. With |
| 13 | // BOOST_SPIRIT_NO_PREDEFINED_TERMINALS defined, you are |
| 14 | // responsible in creating instances of the terminals that |
| 15 | // you need (e.g. see qi::uint_type uint_ below). |
| 16 | #define BOOST_SPIRIT_NO_PREDEFINED_TERMINALS |
| 17 | /////////////////////////////////////////////////////////////////////////////// |
| 18 | |
| 19 | /////////////////////////////////////////////////////////////////////////////// |
| 20 | // Uncomment this if you want to enable debugging |
| 21 | // #define BOOST_SPIRIT_QI_DEBUG |
| 22 | /////////////////////////////////////////////////////////////////////////////// |
| 23 | |
| 24 | #include <boost/spirit/include/qi.hpp> |
| 25 | #include "ast.hpp" |
| 26 | #include "error_handler.hpp" |
| 27 | #include <vector> |
| 28 | |
| 29 | namespace client { namespace parser |
| 30 | { |
| 31 | namespace qi = boost::spirit::qi; |
| 32 | namespace ascii = boost::spirit::ascii; |
| 33 | |
| 34 | /////////////////////////////////////////////////////////////////////////////// |
| 35 | // The expression grammar |
| 36 | /////////////////////////////////////////////////////////////////////////////// |
| 37 | template <typename Iterator> |
| 38 | struct expression : qi::grammar<Iterator, ast::expression(), ascii::space_type> |
| 39 | { |
| 40 | expression(error_handler<Iterator>& error_handler); |
| 41 | |
| 42 | qi::rule<Iterator, ast::expression(), ascii::space_type> expr; |
| 43 | qi::rule<Iterator, ast::expression(), ascii::space_type> additive_expr; |
| 44 | qi::rule<Iterator, ast::expression(), ascii::space_type> multiplicative_expr; |
| 45 | qi::rule<Iterator, ast::operand(), ascii::space_type> unary_expr; |
| 46 | qi::rule<Iterator, ast::operand(), ascii::space_type> primary_expr; |
| 47 | qi::rule<Iterator, std::string(), ascii::space_type> identifier; |
| 48 | }; |
| 49 | }} |
| 50 | |
| 51 | #endif |
| 52 | |
| 53 | |
| 54 | |