spirit/example/qi/compiler_tutorial/mini_c/expression.hpp
Joel de Guzman 16fc0961c4 - fixed mini_c precedence
- prelude to adding more operators in conjure

[SVN r69814]
2011-03-10 01:18:58 +00:00

80 lines
2.7 KiB
C++

/*=============================================================================
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_MINIC_EXPRESSION_HPP)
#define BOOST_SPIRIT_MINIC_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 "skipper.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(), skipper<Iterator> >
{
expression(error_handler<Iterator>& error_handler);
qi::rule<Iterator, ast::expression(), skipper<Iterator> >
expr, equality_expr, relational_expr,
logical_or_expr, logical_and_expr,
additive_expr, multiplicative_expr
;
qi::rule<Iterator, ast::operand(), skipper<Iterator> >
unary_expr, primary_expr
;
qi::rule<Iterator, ast::function_call(), skipper<Iterator> >
function_call
;
qi::rule<Iterator, std::list<ast::expression>(), skipper<Iterator> >
argument_list
;
qi::rule<Iterator, std::string(), skipper<Iterator> >
identifier
;
qi::symbols<char, ast::optoken>
logical_or_op, logical_and_op,
equality_op, relational_op,
additive_op, multiplicative_op, unary_op
;
qi::symbols<char>
keywords
;
};
}}
#endif