/*============================================================================= Copyright (c) 2001-2011 Joel de Guzman 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) =============================================================================*/ #if !defined(BOOST_SPIRIT_CALC7_EXPRESSION_HPP) #define BOOST_SPIRIT_CALC7_EXPRESSION_HPP /////////////////////////////////////////////////////////////////////////////// // Spirit v2.5 allows you to suppress automatic generation // of predefined terminals to speed up complation. With // BOOST_SPIRIT_NO_PREDEFINED_TERMINALS defined, you are // responsible in creating instances of the terminals that // you need (e.g. see qi::uint_type uint_ below). #define BOOST_SPIRIT_NO_PREDEFINED_TERMINALS /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// // Uncomment this if you want to enable debugging // #define BOOST_SPIRIT_QI_DEBUG /////////////////////////////////////////////////////////////////////////////// #include <boost/spirit/include/qi.hpp> #include "ast.hpp" #include "error_handler.hpp" #include <vector> namespace client { namespace parser { namespace qi = boost::spirit::qi; namespace ascii = boost::spirit::ascii; /////////////////////////////////////////////////////////////////////////////// // The expression grammar /////////////////////////////////////////////////////////////////////////////// template <typename Iterator> struct expression : qi::grammar<Iterator, ast::expression(), ascii::space_type> { expression(error_handler<Iterator>& error_handler); qi::rule<Iterator, ast::expression(), ascii::space_type> expr; qi::rule<Iterator, ast::expression(), ascii::space_type> additive_expr; qi::rule<Iterator, ast::expression(), ascii::space_type> multiplicative_expr; qi::rule<Iterator, ast::operand(), ascii::space_type> unary_expr; qi::rule<Iterator, ast::operand(), ascii::space_type> primary_expr; qi::rule<Iterator, std::string(), ascii::space_type> identifier; }; }} #endif