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_CONJURE_EXPRESSION_HPP)
8#define BOOST_SPIRIT_CONJURE_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 "skipper.hpp"
28#include <vector>
29
30namespace client { namespace parser
31{
32 namespace qi = boost::spirit::qi;
33 namespace ascii = boost::spirit::ascii;
34
35 ///////////////////////////////////////////////////////////////////////////////
36 // The expression grammar
37 ///////////////////////////////////////////////////////////////////////////////
38 template <typename Iterator>
39 struct expression : qi::grammar<Iterator, ast::expression(), skipper<Iterator> >
40 {
41 expression(error_handler<Iterator>& error_handler);
42
43 qi::rule<Iterator, ast::expression(), skipper<Iterator> >
44 expr
45 ;
46
47 qi::rule<Iterator, ast::operand(), skipper<Iterator> >
48 unary_expr, primary_expr
49 ;
50
51 qi::rule<Iterator, ast::function_call(), skipper<Iterator> >
52 function_call
53 ;
54
55 qi::rule<Iterator, std::list<ast::expression>(), skipper<Iterator> >
56 argument_list
57 ;
58
59 qi::rule<Iterator, std::string(), skipper<Iterator> >
60 identifier
61 ;
62
63 qi::symbols<char, ast::optoken>
64 unary_op, binary_op
65 ;
66
67 qi::symbols<char>
68 keywords
69 ;
70 };
71}}
72
73#endif
74
75
76

source code of boost/libs/spirit/example/qi/compiler_tutorial/conjure1/expression.hpp